Method for driving a liquid crystal display device

Abstract

To provide a lighting device that allows for precise control of brightness in each region. [Solution] The system comprises a threshold, multiple light sources, spacers, and a diffuser plate. Multiple light sources and spacers The PESA is surrounded by a threshold. And the height of the threshold is greater than the height of the multiple light sources. Raise the threshold, and make the distance between the threshold and the diffuser shorter than the height of the threshold. The distance between the light source and the diffuser plate is made longer than the height of the light source. In this way, light from the light source outside the threshold It can prevent leakage and allow for precise control of brightness in each area.

Description

[Technical Field]

[0001] The present invention relates to a display device, a liquid crystal display device, a semiconductor device, a method for producing them, or the This relates to methods using these. In particular, to drivers in display devices, liquid crystal display devices, semiconductor devices, etc. This relates to a method of operation, or a method of processing signals in such a method. [Background technology]

[0002] In recent years, flat panel displays, such as liquid crystal displays, have become widely popular. And the various performance aspects of flat panels are constantly improving. One of the specifications for a screen is its resolution (or number of pixels), and resolution has also improved significantly. .

[0003] Therefore, super-resolution processing is a technique used to convert low-resolution images into high-resolution images. The technique is being considered (Patent Documents 1 to 3). [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2008-160565 [Patent Document 2] Japanese Patent Publication No. 2008-085411 [Patent Document 3] Japanese Patent Publication No. 2008-252701 [Overview of the project] [Problems that the invention aims to solve]

[0005] Meanwhile, various technologies are being explored to improve image quality in liquid crystal displays. Therefore, in flat panel displays such as LCDs, image quality When performing processing to improve image quality, various problems can arise. For example, image quality The quality may decrease, or it may become impossible to display the correct image, or power consumption may increase. This can result in problems such as increased noise or the need for extra components. This can lead to higher costs, larger equipment, and larger bezels on display devices. It may become slow, processing may become slow, display may be slow, This could potentially lead to a decrease in the Rham frequency.

[0006] Based on the above, the present invention provides a device with improved image quality, a driving method thereof, or a method for manufacturing the same. The challenge is to provide a device for displaying the correct image, a method for driving the same, or a device for manufacturing the same. The challenge is to provide a method, or a device with low power consumption, a method for driving it, or The challenge is to provide a manufacturing method for such a device, or a device with low noise, and a method for driving it. The challenge is to provide a device with fewer parts, or The problem is to provide a method of operation or a method of manufacturing the same. Or, a low-cost device. The challenge is to provide a driving method or a manufacturing method thereof. Alternatively, a miniaturized version The objective is to provide a device, a method for driving the same, or a method for manufacturing the same. Or, a picture frame The objective is to provide a small device, a method for driving it, or a method for manufacturing it. The challenge is to provide a device that processes quickly, a method for driving it, or a method for manufacturing it. The objective is to provide a device that displays information quickly, a method for driving the same, or a method for manufacturing the same. Alternatively, the present invention provides a device with a frame frequency that is not low, a method for driving the same, or a method for manufacturing the same. This is the challenge. [Means for solving the problem]

[0007] Using super-resolution processing technology, a low-resolution image is converted into a high-resolution image. Then, image processing such as edge enhancement, interpolation of frame data for high display by increasing the frame frequency, data processing for local brightness control (local dimming: LOCAL DIMMIN G) using a backlight, data processing for overdrive driving, etc. are performed.

[0008] Alternatively, using super-resolution processing technology, a low-resolution image is converted into a high-resolution image. Then image processing such as edge enhancement, interpolation of frame data for high display by increasing the frame frequency is performed. Then, data processing for local brightness control (local dimming: L OCAL DIMMING) using a backlight, data processing for overdrive driving is performed.

[0009] Therefore, a driving method of a liquid crystal display device is provided, which has a first step of performing super-resolution processing and a second step of performing local dimming processing, and the second step is performed after the first step.

[0010] Alternatively, a driving method of a liquid crystal display device is provided, which has a first step of performing super-resolution processing, a second step of performing local dimming processing, and a third step of performing overdrive processing, and the second step is performed after the first step, and the third step is performed after the second step.

[0011] Alternatively, a driving method of a liquid crystal display device is provided, which has a first step of performing super-resolution processing and a second step of performing frame interpolation processing​​​​​​Then, there is a third step of performing local dimming and a fourth step of performing overdrive. The process includes the steps of, and after the first step, the second step is performed, and After step 2, step 3 is performed, and after step 3, A method for driving a liquid crystal display device is provided, characterized by the performance of four steps.

[0012] Alternatively, a first step of performing super-resolution processing, and a second step of performing edge enhancement processing, The third step is to perform local dimming, and the fourth step is to perform overdrive. The process has a step, and after the first step, the second step is performed, and the second step After the first step, the third step is performed, and after the third step, the fourth step A method for driving a liquid crystal display device is provided, characterized in that a step is performed.

[0013] Note that various types of switches can be used. For example, electrical switches These include switches and mechanical switches. In other words, anything that can control the flow of electric current will work. It is not limited to specific things. For example, a transistor (e.g., bipod) can be used as a switch. (e.g., transistors, MOS transistors), diodes (e.g., PN diodes), PIN diode, Schottky diode, MIM (Metal Insulator) Metal diode, MIS (Metal Insulator Semiconductor) It is possible to use ductors (diodes, diode-connected transistors, etc.) It comes. Alternatively, a logic circuit combining these can be used as a switch.

[0014] Examples of mechanical switches include digital micromirror devices (DMDs). Switches using MEMS (Micro-Electro-Mechanical Systems) technology are available. The switch has electrodes that can be moved mechanically, and the movement of these electrodes It operates by controlling the transitions between conductivity and non-conductivity.

[0015] When a transistor is used as a switch, that transistor is not simply a switch. Because it operates in this manner, the polarity (conductivity type) of the transistor is not particularly limited. However, the off-current To suppress this, it is desirable to use a transistor with the polarity that has a lower off-current. Examples of transistors with low current flow include transistors with an LDD region and multi-gate transistors. There are transistors with a structure, or transistors that operate as switches. The source terminal operates at a potential close to the potential of the low-potential power supply (Vss, GND, 0V, etc.). In such cases, it is desirable to use an N-channel transistor. Conversely, the power of the source terminal If the position is close to the potential of the high-potential side power supply (such as Vdd), then a P-channel transistor is used. It is preferable to use a zista. This is because in an N-channel transistor, the source terminal is When operating at a potential close to that of the low-voltage power supply, the source terminal of a P-channel transistor... When it operates at a potential close to that of the high-potential power supply, the absolute value of the voltage between the gate and source increases. Because it can be controlled, it can operate more accurately as a switch. Furthermore, because transistors rarely operate as source followers, the output voltage is large. This is because the difference is less likely to become smaller.

[0016] Furthermore, using both N-channel and P-channel transistors, CMO An S-type switch may be used as the switch. If a CMOS-type switch is used, a P-type switch will be used. Either a N-channel transistor or an N-type transistor is used to conduct electricity. When current flows through it, it becomes easier to function as a switch. For example, when switching on It can output the appropriate voltage regardless of whether the power signal voltage is high or low. Furthermore, it is possible to reduce the voltage amplitude value of the signal used to turn the switch on or off. Therefore, it is also possible to reduce power consumption.

[0017] When using a transistor as a switch, the switch is connected to the input terminal (source terminal). (or one of the drain terminals) and the output terminal (the other of the source terminal or drain terminal), It has a terminal (gate terminal) that controls conductivity. On the other hand, a diode is used as a switch. When used, the switch may not have terminals to control conductivity. Therefore, Using a diode as a switch instead of a transistor eliminates the need for wiring to control the terminals. It can be reduced.

[0018] Furthermore, when explicitly stating that A and B are connected, it means that A and B are electrically connected. When they are connected, when A and B are functionally connected, and when A and B are directly connected This includes cases where the object is present. Here, A and B are the object (for example, a device, an element, a rotation). (Let it be a path, wiring, electrode, terminal, conductive film, layer, etc.) Therefore, a predetermined connection relationship For example, not limited to the connection relationships shown in the diagram or text, but the connections shown in the diagram or text This includes things other than relationships.

[0019] For example, if A and B are electrically connected, the electrical connection between A and B is possible. Elements that perform this function (for example, switches, transistors, capacitive elements, inductors, resistive elements, etc.) One or more ions (such as ions) may be connected between A and B. Alternatively, A and B and As an example of a functionally connected system, a circuit that enables a functional connection between A and B (for example) For example, logic circuits (inverters, NAND gates, NOR gates, etc.) and signal conversion circuits (DA conversion). Circuits, AD conversion circuits, gamma correction circuits, etc.), potential level conversion circuits (power supply circuits (boost circuits) (Step-down circuits, etc.), level shifter circuits that change the potential level of a signal, etc.), voltage sources, current sources Switching circuits, amplification circuits (circuits that can increase signal amplitude or current, etc., operational amplifiers) (Differential amplifier circuits, source follower circuits, buffer circuits, etc.), signal generation circuits, memory circuits, One or more control circuits (such as) may be connected between A and B. For example, between A and B Even if another circuit is in between, if the signal output from A is transmitted to B, then A and B and They are assumed to be functionally connected.

[0020] Furthermore, if it is explicitly stated that A and B are electrically connected, then A and B are electrically connected. When connected electrically (that is, when another element or circuit is placed between A and B) (when they are separated) and when A and B are functionally connected (that is, when there is no separate connection between A and B) (When they are functionally connected with a circuit in between) and when A and B are directly connected ( In other words, this includes cases where A and B are connected without any other element or circuit in between. In other words, if you explicitly state that they are electrically connected, then simply state that they are connected. This is equivalent to the case where it is explicitly stated only that it is included.

[0021] Furthermore, a display element, a display device having a display element, a light-emitting element, and a device having a light-emitting element A light-emitting device can take on various forms and contain various elements. For example For example, as a display element, display device, light-emitting element, or light-emitting device, EL (electroluminescent) EL elements (including organic and inorganic EL elements, organic EL elements, inorganic EL elements), LE D (white LED, red LED, green LED, blue LED, etc.), transistor (current-dependent) Transistors that emit light, electron-emitting elements, liquid crystal elements, electronic inks, electrophoretic elements, etc. Rating light bulbs (GLV), plasma display panels (PDP), digital Micro-mirror devices (DMDs), piezoelectric ceramic displays, carbon nanotubes Due to electromagnetic effects such as those described above, contrast, brightness, reflectance, and transmittance can change. It can have a display medium. Note that an EL display device is an EL display. As for display devices using electron emission elements, field emission displays ( FED) and SED type flat-panel displays (SED: Surface-conducting Display using liquid crystal elements (such as on electron-emitter displays) The devices include liquid crystal displays (transmissive liquid crystal displays, semi-transmissive liquid crystal displays, Reflective liquid crystal displays, direct-view liquid crystal displays, projection liquid crystal displays, electronic Electronic paper is an example of a display device that uses ink or electrophoretic elements.

[0022] An EL element is defined as having an anode, a cathode, and an EL layer sandwiched between the anode and cathode. It is a device. The EL layer utilizes light emission (fluorescence) from singlet excitons. This method utilizes emission from triplet excitons (phosphorescence), and also utilizes emission from singlet excitons (fluorescence). This includes those that use and those that utilize the emission (phosphorescence) from triplet excitons, and organic materials. Things formed by inorganic matter, things formed by organic matter Materials formed from inorganic substances, polymer materials, low molecular weight materials, polymer materials It may contain materials and low-molecular-weight materials, etc. However, it is not limited to this, It can have a variety of elements as an EL element.

[0023] An electron-emitting element is a device that extracts electrons by concentrating a high electric field at the cathode. For example, As electron-emitting elements, spint type, carbon nanotube (CNT) type, metal-insulator —MIM (Metal-Insulator-Metal) type with layered metal, metal— MIS (Metal-Insulator-Semiconductor) is a stacked semiconductor structure. ctor type, MOS type, silicon type, thin-film diode type, diamond type, metal-insulating Body - Semiconductor - Metal type, thin film type, HEED type, EL type, porous silicon type, surface conduction ( It can have SCE type, etc. However, it is not limited to this, and as an electron emission element It can possess a variety of things.

[0024] Liquid crystal elements control the transmission or non-transmission of light through the optical modulation effect of liquid crystals. It is an element composed of a pair of electrodes and liquid crystal. The optical modulation effect of the liquid crystal is as follows: Controlled by the electric field applied to the liquid crystal (including the electric field in the horizontal direction, the electric field in the vertical direction, or the electric field in the diagonal direction) It is controlled. Furthermore, liquid crystal elements include nematic liquid crystals, cholesteric liquid crystals, and smectic liquid crystals. Liquid crystal, discotic liquid crystal, thermotropic liquid crystal, lyotropic liquid crystal, low molecular weight liquid crystal Polymer liquid crystals, polymer dispersed liquid crystals (PDLCs), ferroelectric liquid crystals, antiferroelectric liquid crystals, main-chain liquid crystals Examples include side-chain polymer liquid crystals, plasma-addressable liquid crystals (PALC), and banana-shaped liquid crystals. This is possible. Also, the LCD driving method is TN (Twisted Nematic). Mode, STN (Super Twisted Nematic) mode, IPS (In -Plane-Switching) mode, FFS (Fringe Field Switch) itching) mode, MVA (Multi-domain Vertical Al ignition) mode, PVA (Patterned Vertical Align ment) mode, ASV (Advanced Super View) mode, ASM (Axially Symmetric aligned Micro-cell) mode OCB(Optically Compensated Birefringenc) e) Mode, ECB (Electrically Controlled Bicycle) Ingence) mode, FLC (Ferroelectric Liquid Cryptography) stal) mode, AFLC(AntiFerroelectric Liquid C (ristor) mode, PDLC (Polymer Dispersed Liquid) Crystal mode, guest host mode, Blue Phase mode Codes and the like can be used. However, this is not limited to liquid crystal elements and their driving methods. Various things can be used as such.

[0025] Furthermore, electronic paper is characterized by its molecular-based display (optical anisotropy, dye molecule orientation). (etc.), things that are displayed by particles (electrophoresis, particle movement, particle rotation, phase change, etc.), These are phenomena that occur due to the movement of one end of a film, or due to the color change / phase change of molecules. Some light is displayed by the light absorption of molecules, while others are displayed by self-luminescence due to the bonding of electrons and holes. This refers to things that are made to look like microcapsules. For example, as a display method for electronic paper, microcapsules Ball-type electrophoresis, horizontal-moving electrophoresis, vertical-moving electrophoresis, spherical twist ball, magnetic twist Istball, cylindrical twist ball method, charged toner, electronic powder fluid, magnetophoresis type, magnetic sensing Thermal, electrowetting, light scattering (transparent / opaque change), cholesteric liquid crystal / light Conductive layer, cholesteric liquid crystal, bistable nematic liquid crystal, ferroelectric liquid crystal, dichroic dye / liquid Crystalline dispersion type, movable film, color change with leuco dyes, photochromic, electrochromic It can use MIC, electrodeposition, flexible organic EL, etc. Furthermore, this is not limited to the use of electronic paper and various display methods. This can be done. Here, by using microcapsule electrophoresis, the electrophoretic method It can solve the drawbacks of agglomeration and sedimentation of electrophoretic particles. Electron powder fluid offers high-speed response. It offers advantages such as high reflectivity, wide viewing angle, low power consumption, and memory capabilities.

[0026] Furthermore, the plasma display panel consists of a substrate with electrodes formed on its surface, and electrodes and minute particles A substrate with grooves formed on its surface and a phosphor layer formed inside the grooves is placed opposite a noble gas at a narrow distance. It has a structure that encloses a plasma tube. Alternatively, the plasma display panel has a plasma tube It is also possible to create a structure in which the plasma tube is sandwiched between film-like electrodes from above and below. A "bu" is a glass tube containing sealed discharge gas and RGB phosphors. Yes, it is possible. Furthermore, by applying a voltage between the electrodes, ultraviolet light is generated, causing the phosphor to glow. And so, the display can be shown. Note that the plasma display panel is a DC type P DP and AC type PDP are also acceptable. Here, the driving method for the plasma display panel is AWS (Address While Sustain) driven, subframe reset Address Display (ADS) is divided into address period, address period, and maintenance period. Separated drive, CLEAR (HI-CONTRAST & LOW ENERGY) Y ADDRESS&REDUCTION OF FALSE CONTOUR SEQ UENCE) Driven, ALIS (Alternate Lighting of Surf) aces) method, TERES (Technology of Reciprocal S It can use a ustainer drive, etc. However, it is not limited to this, Various things can be used as a display.

[0027] Note that display devices that require a light source, such as liquid crystal displays (transmissive liquid crystal displays) I. Semi-transmissive liquid crystal display, reflective liquid crystal display, direct-view liquid crystal display, projection Display devices using (refractory liquid crystal displays), grating light bulbs (GLVs), and As a light source for display devices using digital micromirror devices (DMDs), electro Using trolluminescence, cold cathode tubes, hot cathode tubes, LEDs, laser light sources, mercury lamps, etc. It is possible to use various light sources. However, it is not limited to this, and various things can be used as light sources. Cut.

[0028] Furthermore, various types of transistors can be used as transistors. There are no restrictions on the type of transistor used. For example, amorphous silicon, polycrystalline silicon, Microcrystalline silicon (also called nanocrystal or semi-amorphous silicon) This involves using thin-film transistors (TFTs) that have non-single-crystal semiconductor films, such as those shown above. This is possible. There are various advantages to using TFTs. For example, in the case of single-crystal silicon... Because it can be manufactured at a lower temperature, it can reduce manufacturing costs or allow for the use of larger manufacturing equipment. This allows for larger manufacturing equipment, enabling production on larger substrates. Therefore, multiple processes can be carried out simultaneously. Because a large number of display devices can be manufactured, it can be produced at a low cost. Furthermore, the manufacturing temperature is low. Therefore, substrates with poor heat resistance can be used. It is possible to manufacture transistors. And, using transistors on a light-transmitting substrate, a display element can be created. It is possible to control the transmission of light in this. Alternatively, because the film thickness of the transistor is thin, A portion of the film that makes up the radiator can transmit light. Therefore, the aperture ratio is improved. It can be made to happen.

[0029] Furthermore, when manufacturing polycrystalline silicon, by using a catalyst (such as nickel), Further improvement in crystallinity makes it possible to manufacture transistors with superior electrical properties. As a result, gate driver circuits (scan line driving circuits) and source driver circuits (signal line driving circuits) ), and integrated signal processing circuits (signal generation circuit, gamma correction circuit, DA conversion circuit, etc.) on the circuit board. It can be formed.

[0030] Furthermore, when manufacturing microcrystalline silicon, by using a catalyst (such as nickel), This further improves crystallinity, making it possible to manufacture transistors with superior electrical properties. In this case, crystallinity can be improved simply by applying heat treatment without laser irradiation. This is also possible. As a result, part of the source driver circuit (such as analog switches) and the gate The driver circuit (scan line drive circuit) can be integrally formed on the substrate. Furthermore, If laser irradiation is not performed for crystallization, it is possible to suppress unevenness in the crystallinity of silicon. Therefore, it is possible to display images with improved image quality.

[0031] However, it is possible to manufacture polycrystalline silicon or microcrystalline silicon without using a catalyst (such as nickel). It is possible to do so.

[0032] Furthermore, improving the crystallinity of silicon to polycrystalline or microcrystalline forms is possible for the entire panel. It is preferable to perform this with the body, but it is not limited to that. The crystallinity of the ricon may be improved. Selectively improving crystallinity is done by using laser light. This is possible by selectively irradiating the area. For example, the peripheral circuit area, which is an area other than the pixel. Laser light may be irradiated only to the area. Alternatively, a gate driver circuit or source driver may be used. The laser light may be irradiated only to the area of ​​the circuit, etc. Alternatively, one of the source driver circuits The laser light may be irradiated only to the area of ​​the part (for example, the analog switch). By improving silicon crystallization only in areas where the circuit needs to operate at high speed, Yes, it is possible. Since the pixel region does not require high-speed operation, even if the crystallinity is not improved, The pixel circuit can be operated without any problems. The area requiring improvement in crystallinity is smaller. Therefore, the manufacturing process can be shortened, throughput can be improved, and manufacturing costs can be reduced. This allows for the production of a product with fewer manufacturing devices, thus reducing manufacturing costs. It is possible to make it happen.

[0033] Alternatively, transistors can be formed using semiconductor substrates or SOI substrates. As a result, there is less variation in characteristics, size, and shape, and the current supply capacity is high. It is possible to manufacture transistors with small dimensions. Using these transistors, This allows for lower power consumption of the circuit or higher integration of the circuitry.

[0034] Alternatively, ZnO, α-InGaZnO, SiGe, GaAs, indium zinc oxide ( Compound semiconductors or oxide semiconductors such as IZO, indium tin oxide (ITO), and SnO. Transistors having a body, and further, thin films of these compound semiconductors or oxide semiconductors. Thin-film transistors and the like can be used. This allows for lower manufacturing temperatures. For example, it becomes possible to manufacture transistors at room temperature. As a result, substrates with low heat resistance can be used. For example, transistors can be directly formed on plastic substrates or film substrates. Furthermore, these compound semiconductors or oxide semiconductors are used in the channel portion of transistors. Not only can these be used for other purposes, but they can also be used for other applications. For example, these compound semiconductors Alternatively, oxide semiconductors can be used as resistive elements, pixel electrodes, or light-transmitting electrodes. Furthermore, since they can be deposited or formed simultaneously with the transistors, costs can be reduced. .

[0035] Alternatively, transistors formed using inkjet or printing methods can be used. These will allow for manufacturing at room temperature, at low vacuum levels, or on large substrates. It can be manufactured without using a mask (reticle), so transistors can be produced. The layout can be easily changed. Furthermore, there is no need to use a register. This reduces material costs and the number of processes. Furthermore, because the film is applied only to the necessary parts, This method, which involves etching after depositing a film over the entire surface, is less wasteful of material and lowers costs. It can be done.

[0036] Alternatively, transistors containing organic semiconductors or carbon nanotubes can be used. This allows transistors to be formed on a flexible substrate. Semiconductor devices using such substrates can be made more resistant to impact.

[0037] Furthermore, transistors of various structures can be used. For example, MOS type transistors By using transistors such as junction transistors and bipolar transistors as transistors... This can be done. By using MOS type transistors, the size of the transistor can be reduced. It is possible to do so. Therefore, a large number of transistors can be installed. Bipolar By using a transistor, a large current can be passed through it. Therefore, the circuit can be run at high speed. It can be made to work.

[0038] Furthermore, MOS transistors, bipolar transistors, etc., are mixed together on a single substrate. It may be formed in this way. This makes it possible to achieve low power consumption, miniaturization, and high-speed operation. ru.

[0039] In addition, various other transistors can be used.

[0040] Furthermore, transistors can be formed using various substrates. The types of substrates are particularly... It is not limited to a specific type. Examples of substrates include single crystal substrates and SOI substrates. Glass substrates, quartz substrates, plastic substrates, stainless steel substrates, stainless steel A substrate with a chill foil can be used. Alternatively, a transistor can be used with a certain substrate. A transistor is formed, then the transistor is transposed onto another substrate, and then the transistor is placed on another substrate. The following may be placed on the substrate on which the transistor is transposed: a single crystal substrate, an SOI substrate, Glass substrates, quartz substrates, plastic substrates, paper substrates, cellophane substrates, stone substrates, wood substrates Boards, fabric substrates (natural fibers (silk, cotton, linen), synthetic fibers (nylon, polyurethane, polyester) (Includes) or regenerated fibers (acetate, cupro, rayon, recycled polyester), etc. (Mu), leather substrate, rubber substrate, stainless steel substrate, stainless steel foil A substrate such as can be used. Alternatively, the skin (epidermis, dermis) of an animal such as a human or Subcutaneous tissue may be used as a substrate. Alternatively, a transistor may be formed using a certain substrate. The substrate may be polished to make it thinner. Examples of substrates that can be polished include single-crystal substrates and SOI substrates. Glass substrates, quartz substrates, plastic substrates, stainless steel substrates, stainless steel Substrates having chill foil can be used. Formation of transistors with good characteristics, formation of transistors with low power consumption, and durable components. It is possible to manufacture the device, provide heat resistance, reduce weight, or make it thinner.

[0041] Furthermore, transistor configurations can take various forms and are not limited to a specific configuration. For example, a multi-gate structure with two or more gate electrodes can be applied. In a gate structure, the channel regions are connected in series, so multiple transistors are connected in series. This configuration is connected to the above. The multi-gate structure reduces off-current and improves the transistor's durability. Pressure can be improved (reliability can be improved). Alternatively, a multi-gate structure can be used to increase saturation. When operating in the region, even if the drain-source voltage changes, the drain-source current remains constant. It can flatten the slope of the voltage-current characteristics without causing much change. By utilizing the characteristic that the slope is flat, an ideal current source circuit or a very high resistance value can be created. This enables the realization of an active load. As a result, it allows for the creation of differential circuits and current mirrors with good characteristics. The circuit can be realized.

[0042] As another example, a structure can be applied in which gate electrodes are located above and below the channel. This is possible. By arranging the gate electrodes above and below the channel, the channel region Because the range increases, the current value can be increased. Alternatively, gate currents can be placed above and below the channel. By creating a structure where poles are positioned, depletion layers are more likely to form, thus improving the S value. This can be achieved by arranging gate electrodes above and below the channel. This results in a configuration where multiple transistors are connected in parallel.

[0043] Structures where the gate electrode is positioned above the channel region, and structures where the gate electrode is positioned below the channel region. Structures in which elements are arranged, positive staggered structure, inverse staggered structure, and channel regions divided into multiple regions A structure in which channel regions are connected in parallel, or a configuration in which channel regions are connected in series. This can also be applied. Furthermore, source electrodes and drain electrodes can be placed in the channel region (or a part thereof). Structures where these overlap can also be applied. The source electrode or other components can be placed in the channel region (or a part thereof). By creating a structure where the rain electrodes overlap, charge accumulates in a part of the channel region. This can prevent the system from becoming even more unstable. Alternatively, a structure with an LDD area can be created. Applicable. By providing an LDD region, the off-current can be reduced, or the transistor's breakdown voltage can be increased. Improvements (reliability improvements) can be achieved. Alternatively, by establishing an LDD area, When operating in the saturation region, even if the drain-source voltage changes, the drain-source voltage remains constant. The current does not change much, and the slope of the voltage-current characteristic can be made flat.

[0044] Furthermore, various types of transistors can be used, and they can be formed using various substrates. Therefore, all the circuits necessary to realize a given function can be the same. It is also possible to form it on a single substrate. For example, the number of times required to achieve a predetermined function All of the substrates are various types, such as glass substrates, plastic substrates, single crystal substrates, or SOI substrates. It is also possible to form it using a substrate. The circuit necessary to realize the predetermined function Because everything is formed using the same circuit board, the number of components is reduced, resulting in lower costs. Alternatively, reliability can be improved by reducing the number of connection points with circuit components. A portion of the circuit necessary to achieve a predetermined function is formed on a certain substrate, and the predetermined function It is also possible that another part of the circuitry necessary to achieve this is formed on a separate circuit board. In other words, all the circuits necessary to achieve a given function are formed using the same circuit board. It is not necessary. For example, part of the circuit necessary to achieve a certain function is made of glass. Another circuit formed on the substrate by transistors and necessary to realize a predetermined function Some are formed on single-crystal substrates and consist of transistors formed using single-crystal substrates. The IC chip is connected to the glass substrate using COG (Chip On Glass), and the glass It is also possible to place the IC chip on the circuit board. Alternatively, the IC chip can be placed on a TA (Time Attack) Using B (Tape Automated Bonding) or printed circuit boards, glass substrate It is also possible to connect it to a board. In this way, part of the circuit is formed on the same board. This reduces costs by reducing the number of components, or by reducing the number of connections to circuit components. Reliability can be improved. Alternatively, the drive voltage and drive frequency can be high. Because certain circuits consume a lot of power, those circuits are placed on the same circuit board. Instead of forming it, for example, form the circuit in that area on a single crystal substrate, and then use that circuit By using a pre-configured IC chip, an increase in power consumption can be prevented.

[0045] Note that one pixel refers to the smallest unit of an image. Therefore, R (red), G (green), B (blue) In the case of a full-color display device consisting of the color elements of (R) and G, one pixel is a dot of the R color element and G It shall consist of dots of color element A and dots of color element B. Note that the color elements are It is not limited to three colors; you may use more than three colors, and you may also use colors other than RGB. For example Alternatively, you can add white to make it RGBW (W is white). Or, you can add yellow to RGB. You may add one or more colors such as cyan, magenta, emerald green, or vermilion. For example, a color similar to at least one of the RGB colors may be added to the RGB color palette. For example, you could use R, G, B1, B2. Both B1 and B2 are blue, but slightly The wavelengths are different. Similarly, they can be represented as R1, R2, G, and B. Using such color elements... By including these elements, it becomes possible to display things more accurately. By using this, power consumption can be reduced. Note that each pixel must have the same color element Multiple raw dots are allowed. In that case, each of those multiple color elements contributes to the display. The size of the areas can be different. Alternatively, there can be multiple color elements of the same color. Tonal gradation can also be expressed by controlling each of these parameters individually. This is called the area gradation method. Alternatively, using multiple dots of the same color, the signal supplied to each dot You can also widen the field of view by making it slightly different. In other words, there are multiple, The potentials of the pixel electrodes that each color element of the same color possess may be different. As a result, the liquid The voltage applied to the crystal molecules differs for each pixel electrode. Therefore, widening the field of view is possible. Yes, it's possible.

[0046] In circuit diagrams and similar representations, one pixel represents a single element capable of controlling brightness. In some cases, this may be the case. Therefore, in that case, one pixel represents one color element. And brightness is expressed using just one of those color elements. Therefore, at that time, R (red), G (green), B (blue) In the case of a color display device consisting of color elements, the smallest unit of an image is a pixel of R and a pixel of G. In some cases, it may be considered to consist of three pixels: pixels A, pixel B, and pixels B.

[0047] Note that pixels may be arranged (arranged) in a matrix. Here, pixels are TRICK arrangement means that pixels are arranged in a straight line, either vertically or horizontally. This includes cases where they are arranged in a line or on a jagged line. For example, when displaying full color using three color elements (e.g., RGB), a striped arrangement is used. This also includes cases where the three color element dots are in a delta configuration. This includes cases where the layout is Bayer-based. Note that the size of the display area for each dot of the color element. They may be different. This will help to reduce power consumption or extend the lifespan of the display elements. It is possible.

[0048] Furthermore, an active matrix system in which the pixels have active elements, or a system in which the pixels have active elements A passive matrix method that does not have a specific component can be used.

[0049] In the active matrix system, the active elements (active elements, nonlinear elements) are, In addition to transistors, various active elements (active elements, nonlinear elements) can be used. This can be done. For example, MIM (Metal Insulator Metal) and TFD It is also possible to use (Thin Film Diode), etc. These elements are Because the manufacturing process is simplified, it is possible to reduce manufacturing costs or improve yield. Furthermore, because the element size is small, the aperture ratio can be improved, leading to lower power consumption and higher brightness. It is possible to achieve degree change.

[0050] In addition to the active matrix system, there are other types of systems, such as active elements (non-linear elements). It is also possible to use a passive matrix type without active elements. Because it does not use (vibration elements, nonlinear elements), the manufacturing process is simpler, reducing manufacturing costs or increasing production costs. It can improve retention. It does not use active elements (active elements, nonlinear elements). Therefore, the aperture ratio can be improved, leading to lower power consumption and higher brightness.

[0051] A transistor is defined as having at least three terminals, including a gate, a drain, and a source. It is an element having a drain region and a channel region between the drain region and the source region, Current can be passed through the rain region, channel region, and source region. Here, The terms "sow" and "drain" vary depending on the transistor's structure and operating conditions, so which one is the drain? It is difficult to determine whether it is a source or a drain. Therefore, source and drain The area that functions as a source or drain is sometimes not called a source or drain. In that case, for example... In some cases, these are referred to as the first terminal and the second terminal, respectively. Alternatively, they can be referred to as They are sometimes referred to as the first electrode and the second electrode. Alternatively, they may be referred to as the first region and the second region. There is a match.

[0052] Furthermore, a transistor has at least three terminals, including the base, emitter, and collector. It may also be an element having a first terminal, and the collector may be the first terminal, and the second terminal, respectively. It may sometimes be written as "2 terminals," etc.

[0053] Note that semiconductor devices include semiconductor elements (transistors, diodes, thyristors, etc.). This refers to a device that has a circuit. Furthermore, it refers to a device that can function by utilizing semiconductor properties. The term "semiconductor device" can be used to refer to all such devices. Alternatively, a semiconductor device can refer to any device that contains semiconductor materials. That's what they say.

[0054] A display device is a device that has a display element. It may contain multiple pixels, including children. Note that the display device drives the multiple pixels. It may also include an edge drive circuit. Note that a peripheral drive circuit that drives multiple pixels may include multiple The pixels may be formed on the same substrate. Note that the display device may be formed using wire bonding or bump bonding. Peripheral drive circuits placed on the substrate, also known as chip-on-glass (COG), are constructed using methods such as those described above. It is acceptable to include IC chips connected via a cable, or IC chips connected via a TAB, etc. The display device consists of IC chips, resistors, capacitives, inductors, transistors, etc. It may include a flexible printed circuit (FPC) with a component attached. The display device is connected via a flexible printed circuit (FPC), etc., and the IC chip Printed circuit boards with components such as resistors, capacitors, inductors, and transistors attached. It may also include a wire substrate (PWB). Furthermore, the display device may include a polarizing plate or a phase difference plate, etc. It may also include an optical sheet. The display device includes a lighting device, a housing, an audio input / output device, It may include a light sensor, etc.

[0055] The lighting device consists of a backlight unit, a light guide plate, a prism sheet, a diffusion sheet, and a backlight. It has a light sheet, a light source (LED, cold cathode tube, etc.), a cooling device (water-cooled, air-cooled), etc. You can.

[0056] Furthermore, a light-emitting device refers to a device that has light-emitting elements, etc. If it has an optical element, a light-emitting device is one specific example of a display device.

[0057] A reflective device is a device that has light-reflecting elements, light-diffracting elements, light-reflecting electrodes, etc. This refers to the idea that...

[0058] A liquid crystal display device is a display device that has liquid crystal elements. Liquid crystal display devices include: There are various types, including direct viewing, projection, transmissive, reflective, and semi-transmissive.

[0059] Note that a drive device refers to a device that has semiconductor elements, electrical circuits, or electronic circuits. For example, a transistor (selection transistor) that controls the input of a signal from the source signal line into the pixel. A transistor (sometimes called a switching transistor) applies voltage or current to the pixel electrode. Transistors that supply power, transistors that supply voltage or current to light-emitting elements, etc. This is an example of a moving device. Furthermore, it is a circuit that supplies signals to the gate signal line (gate driver, gate (Sometimes called a source line drive circuit), a circuit that supplies a signal to the source signal line (source drive circuit) Drivers (sometimes called source line drive circuits, etc.) are examples of drive devices.

[0060] Furthermore, display devices, semiconductor devices, lighting devices, cooling devices, light-emitting devices, reflectors, drive devices, etc. These may overlap with each other. For example, a display device may have semiconductor equipment and an emitter. It may have an optical device. Alternatively, the semiconductor device may have a display device and a drive device. This can sometimes happen.

[0061] Furthermore, if B is formed on top of A, or if B is formed on top of A, When describing this, it is not limited to the case that B is formed in direct contact with A. This also includes cases where this does not occur, i.e., when another object is intervening between A and B. Here, A and B are objects (for example, devices, elements, circuits, wiring, electrodes, terminals, conductive films, layers). (etc.)

[0062] Therefore, for example, explicitly stating that layer B is formed on top of layer A (or on top of layer A) If described, this applies to cases where layer B is formed in direct contact with layer A, and where layer A is formed on top of layer B. Another layer (such as layer C or layer D) is formed in direct contact with it, and layer B is formed in direct contact with it on top of that. This includes cases where a layer is formed. Note that other layers (e.g., layer C or layer D) are: It can be single-layered or multi-layered.

[0063] Furthermore, the same applies when it is explicitly stated that B is formed above A. It is not limited to B being in direct contact with A, but rather there may be another object between A and B. This includes cases where intervening layers are present. For example, if layer B is formed above layer A, In this case, there are two possibilities: when layer B is formed in direct contact with layer A, and when layer B is formed in direct contact with layer A. Then another layer (for example, layer C or layer D) is formed, and layer B is formed directly in contact with it. This includes cases where it is a single layer. Note that other layers (for example, layer C or layer D) may also be single layers. That's fine, and multiple layers are also acceptable.

[0064] Furthermore, B is formed on top of A, B is formed on top of A, or B is above A When explicitly stating that something is formed, this includes cases where B is formed diagonally upwards. ru.

[0065] The same applies when B is below A, or when B is below A.

[0066] Furthermore, it is preferable that any terms explicitly stated as singular remain singular. However, this is not the only option; there can be multiple instances. Similarly, explicitly specifying the number of instances is also possible. For items that are listed as such, it is preferable that there be multiple items. However, this is not limited to these items. It can also be singular.

[0067] Note that in the diagram, the size, layer thickness, or area may be exaggerated for clarity. There is a compatibility issue. Therefore, it is not necessarily limited to that scale.

[0068] Note that the diagram is a schematic representation of an ideal example and is not limited to the shapes or values ​​shown in the diagram. No. For example, variations in shape due to manufacturing technology, variations in shape due to errors, noise. Variations in signals, voltages, or currents due to, or signals and voltages due to timing differences. Alternatively, it may include variations in current, etc.

[0069] Note that technical terms may be used to describe specific embodiments or examples. This is not limited to these, but is common.

[0070] Furthermore, undefined terms (including scientific and technical terms such as specialized or academic terms) are defined as follows: It can be used with the same meaning as the general meaning understood by those in the usual field. (Dictionary) The terminology defined by these means shall be interpreted in a way that is consistent with the background of the related technologies. This is preferable.

[0071] Note that terms such as "1st," "2nd," and "3rd" refer to various elements, components, areas, layers, and regions. It is used to distinguish and describe them. Therefore, terms such as 1st, 2nd, 3rd, etc. are used for elements. This does not limit the number of components, regions, layers, areas, etc. Furthermore, for example, "the first" It can be replaced with "second" or "third," etc. [Effects of the Invention]

[0072] It becomes possible to improve image quality. [Brief explanation of the drawing]

[0073] [Figure 1] A diagram illustrating the flow chart (A) to (E) and the circuit (F) according to an example of the embodiment. [Figure 2] (A) to (D) Diagram illustrating a flow chart of an example of the embodiment. [Figure 3] (A) to (C) Diagrams illustrating a display screen according to an example of the embodiment. [Figure 4] (A) to (F) Diagram illustrating a flow chart of an example of the embodiment. [Figure 5] (A) to (D) Diagram illustrating a flow chart of an example of the embodiment. [Figure 6] (A) to (D) Diagram illustrating a flow chart of an example of the embodiment. [Figure 7] (A) and (B) diagrams illustrating a flow chart of an example of the embodiment. [Figure 8] (A) and (B) diagrams illustrating a flow chart of an example of the embodiment. [Figure 9] A diagram illustrating a flow chart related to one example of an embodiment. [Figure 10] (A) Top view and (B) Cross-sectional view illustrating an apparatus according to an example of an embodiment. [Figure 11] (A), (C) top view, (B), (D) cross-sectional view illustrating an example of an embodiment of the apparatus. [Figure 12] (A), (C), (E) Diagrams illustrating the voltage of a display element according to an example embodiment, and (B), (D), (F) Diagrams illustrating the transmittance. [Figure 13] (A) to (C) Diagrams illustrating a display screen according to an example of the embodiment. [Figure 14] (A) to (G) Diagram illustrating a circuit according to an example of the embodiment. [Figure 15] (A) to (H) Diagrams illustrating a circuit according to an example of the embodiment. [Figure 16] (A) and (B) diagrams illustrating the configuration of a display device according to an example of the embodiment. [Figure 17] (A) to (E) Diagram illustrating the configuration of a display device according to an example of the embodiment. [Figure 18] (A) to (C) Cross-sectional diagram illustrating the configuration of a transistor according to one example of the embodiment. [Figure 19] (A) to (H) Diagrams illustrating an electronic device according to an example of the embodiment. [Figure 20] (A) to (H) Diagrams illustrating an electronic device according to an example of the embodiment. [Modes for carrying out the invention]

[0074] The embodiments will be described below with reference to the drawings. However, many of the embodiments differ. It is possible to implement it in any manner, without deviating from its purpose and scope. It will be easily understood by those skilled in the art that the details can be modified in various ways. It should not be interpreted as being limited to the contents described herein. Furthermore, in the configuration described below, Parts or parts having similar functions are indicated by common reference numerals across different drawings, and the same part Detailed explanations of parts with similar functions will be omitted.

[0075] Furthermore, the content described in one embodiment (even a part of it) may be subject to change in implementation. Other content (even partial content) described in form, and / or one or more other facts The content described in the form of implementation (even if only a part of it) may be applied, combined, or replaced. It is possible to perform tasks such as drawing.

[0076] Furthermore, the content described in each embodiment refers to the use of various figures in each embodiment. This refers to the content described or the content described using the text included in the specification.

[0077] Note that a diagram (even a part of it) described in one embodiment may be a part of that diagram. , other figures (even partial ones) described in the embodiment, and / or one or more In the diagram (or even just a part of it) described in another embodiment of the number, by combining them... This allows for the creation of even more diagrams.

[0078] (Embodiment 1) Super-resolution processing is a process that generates a high-resolution image from a low-resolution image. And so on. Or, super-resolution processing is a process that removes lost information during shooting or signal transmission. This refers to the process of restoring lost information. Therefore, because the resolution is low, fine details are lost. By applying super-resolution processing to the averaged image, even the fine details can be accurately recognized. It is possible to generate images that can be recognized. Therefore, such high-resolution images When displayed, it is possible to display high-quality images. For example, a large number of small stones are arranged. In parks where trees have many small leaves, Each individual stone and each tiny leaf can be accurately identified through super-resolution processing. It can be seen in this way. Similarly, blurry, unreadable characters can be seen by applying super-resolution processing. This allows for recognition of finer details, enabling accurate reading. Example For example, super-resolution processing recovers image information from an image with a resolution (number of pixels) of 1440 x 1080. By doing so, it creates an image with a resolution (number of pixels) of 1920 x 1080. In other words, super-resolution processing is a process that increases the amount of information in an image compared to the original image while simultaneously performing a resolution conversion. It can be said that it is a technology. Or, super-resolution processing is the processing of information contained in an image. Among these, frequency components higher than the Nyquist frequency determined by the sampling frequency of the input image are recovered. It can also be said that it is the underlying technology.

[0079] However, if various processes are performed on the image before super-resolution processing, The information in the image changes. Super-resolution processing is a process that creates a new image with higher resolution. Therefore, in order to create high-resolution images accurately, various processes related to images and displays are necessary. It is desirable to perform super-resolution processing using images that have not undergone processing. It is desirable that various processes be carried out after the initial analysis. However, one example of the embodiment involves this. Not limited.

[0080] Figure 1 shows an example of a processing flow when various processes are performed after super-resolution processing. This indicates.

[0081] In Figure 1(A), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. This shows the processing flow when contour enhancement processing is performed after the image has been uploaded. Further processing is performed, after which the image can be displayed.

[0082] Thus, by performing super-resolution processing before edge enhancement processing, the resolution can be accurately determined. This can improve the image. The image before super-resolution processing does not have edge enhancement processing applied. Therefore, no unnecessary processing is performed. As a result, super-resolution processing can be performed accurately. Then, using the more accurate, higher-resolution images created by super-resolution processing, By performing edge enhancement processing, it is possible to obtain the outlines of objects in an image more accurately. This allows you to obtain a clearer image. Therefore, to obtain a good quality image Therefore, it is important to perform super-resolution processing before performing edge enhancement processing. However, the implementation Examples of forms are not limited to those listed here.

[0083] Note that the example of edge enhancement processing is not limited to the above example, and other images Processing can be performed. Other image processing methods include, for example, smoothing and distortion. Correction, error handling, scratch correction, color correction, etc., can be used instead of edge enhancement processing, or edge enhancement. In addition to processing, this can be done. For example, by performing color correction, the NTSC ratio can be adjusted. This allows you to convert images below 100% to images above 100%. It can display images with high purity.

[0084] Furthermore, it is possible for various other processes to be performed before and after each stage of the processing flow. Yes. Other examples of various processing include super-resolution processing, edge enhancement processing, frame interpolation processing, etc. This includes overdrive processing, local dimming processing, IP conversion processing, and scaling processing. Furthermore, other processing is also possible.

[0085] The image source is the TV broadcast signal sent from the broadcasting station, and / or that signal. It includes images generated from. Alternatively, the image source is a DVD (for Blu-ray, etc.). (including) optical storage media such as CDs (including magnetic storage media or magneto-optical storage media), story Signals obtained from the internet, etc., and / or images generated from such signals. It contains images. Or, the image source is a mobile phone, computer, CPU, graphics card. Signals obtained from microcontrollers, controllers, electronic devices, etc., and / or signals It includes the generated image. In addition, the image source is the basis for displaying the image. It includes a signal and / or an image generated from that signal.

[0086] The images include still images and / or moving images and / or video footage.

[0087] Note that the image source can be an interlaced (skipped) image or a progressive image. It is possible to have a non-interlaced (non-skipping scan) image. Or, the image The image source is an interlaced image converted into a progressive image using IP conversion. It is possible that the image has already undergone conversion (interlace-progressive conversion). Alternatively, it is possible to perform IP conversion before super-resolution processing. Figure 2(A) The following shows a portion of the processing flow when performing super-resolution processing using progressive images. 2(B) shows the processing steps when performing super-resolution processing after IP conversion of an interlaced image. This shows a portion of the row.

[0088] Typically, super-resolution processing is applied to a single image (or a portion thereof), or to multiple images (or... This is done using images (part of) the image. Then, the super-resolution processing uses those images to create new By generating new information, it produces high-resolution images. Therefore, accurate In order to perform super-resolution processing, some of the image information is missing, such as in interlaced images. This is undesirable. Therefore, images that undergo super-resolution processing should be progressive (non- It is desirable that the image be interlaced (non-interlaced scanning). Therefore, interlaced In the case of images, IP conversion is performed before super-resolution processing, and progressive It is desirable to perform super-resolution processing using images. However, one example of the embodiment is these Not limited to this.

[0089] Furthermore, as shown in Figure 2(C), the resolution (number of pixels) of the image before super-resolution processing is higher than Ideally, the resolution (number of pixels) of the image after super-resolution processing should be higher, but in reality... Examples of application methods are not limited to those listed here. For example, scaling or other processing may be performed before super-resolution processing. Therefore, the resolution (or number of pixels) is already high. Because the degree is high, the resolution itself does not change before and after super-resolution processing. However, The enlargement process before resolution processing did not restore any missing image information. However, it's simply enlarged, so the display itself isn't actually higher quality. For example, small Parks with many pebbles, or trees with many small leaves In this process, each small stone and each tiny leaf can be precisely identified through magnification. It doesn't display correctly; instead, it simply appears blurred and enlarged. Therefore, by performing super-resolution processing, the image resolution (number of pixels) does not change, but missing The lost image information is restored, resulting in a high-quality image where even the finest details can be identified. It is also possible to do so as shown in Figure 2(D), with a 1440×1080 image. The image was enlarged to 20x1080, and the 1920x1080 image was then resized to 1920x1080. It is also possible to apply super-resolution processing to the image. In this case, the 1440×1080 image is When an image is enlarged to 1920x1080, no information is restored. However, super-resolution... After processing, the information is restored, allowing for accurate identification of even the finest details. Yes, it's possible.

[0090] Furthermore, the resolution is increased through scaling, and then further increased through super-resolution processing. It is also possible to increase the resolution. For example, an 800x600 image can be resized to 1440x1080. The image is enlarged, and that 1440x1080 image is super-resolved to a 1920x1080 image. Image processing is also possible. However, if the resolution is increased through enlargement processing, information The information has not been restored. And, if the resolution is increased by super-resolution processing, the information The information has been restored. However, the examples of embodiments are not limited to these.

[0091] Alternatively, the resolution can be increased using super-resolution processing, and then the resolution can be reduced through scaling processing. It is also possible to increase the resolution. For example, an 800x600 image can be resized to 1440x1080. The image was processed with super-resolution, and the resulting 1440x1080 image was enlarged to a 1920x1080 image. Processing is also possible. However, if the resolution is increased through scaling, the information The restoration has not been performed. And, when the resolution is increased by super-resolution processing, the information The restoration is being carried out. However, the examples of embodiments are not limited to these.

[0092] For example, as a scaling process, methods such as bilinear or bicubic scaling can be used. It can be used. The bilinear method extracts and calculates the pixels of the four surrounding neighbors, and when magnified... This is a method of interpolating missing pixels. Alternatively, in the bicubic method, the transformed coordinate system Based on the reference, 16 pixel values ​​in a 4x4 grid are extracted from the source. Then, these extracted values Weight the 16 - point values and perform a weighted - average - like calculation to determine the pixel value after conversion.

[0093] Thus, before performing contour enhancement processing or the like, perform super - resolution processing. That is, by performing super - resolution processing and then performing contour enhancement processing or the like, a high - resolution image can be accurately created, and furthermore, contour enhancement can be accurately performed. However, the processing performed after super - resolution processing is not limited to contour enhancement and can be similarly applied to other processing cases. Therefore, the content or drawings described in the case of contour enhancement processing can be similarly applied to other processing cases. Similarly, the content or drawings described when performing one processing can be similarly applied when performing the other processing. For example, the processing flow when performing frame interpolation processing after super - resolution processing is shown in Fig. 1(B). Frame interpolation processing is the processing of creating interpolated frame data when increasing the frame frequency for display in order to reduce afterimages and the like. For example, as shown in Fig. 3, in the image of the first frame, a circle is displayed at the left end, and in the image of the second frame, since the circle has moved from left to right, assume that the circle is displayed at the right end. At this time, create the data where the circle is displayed in the center. The processing of creating data like this is frame interpolation processing. And by frame interpolation processing, it is possible to increase the frame frequency in display by the number of interpolated frames. By performing frame interpolation processing like this and increasing the frame frequency for display, a smooth image where the circle moves from left to right can be displayed, and afterimages can be reduced. That is, for moving images, smoother display can be achieved. [[ID=I3]]

[0094]

[0095] The drawing characteristics can be improved.

[0095] In this way, the frame interpolation process is performed, and the driving is performed with a higher frame frequency accordingly. This is called double-speed driving. For example, when the frame frequency is doubled, it is called 2x speed driving, and when the frame frequency is quadrupled, it is called 4x speed driving. In the case of 2x speed driving, images of the same number of frames as the original frames are created by the frame interpolation process. As a result, since the total data amount becomes twice as much, the frame frequency can be doubled for display. Similarly, in the case of 4x speed driving, images of three times the number of original frames are created by the frame interpolation process. As a result, since the total data amount becomes four times as much, the frame frequency can be quadrupled for display. By performing such double-speed driving, the video characteristics can be improved and afterimages can be reduced. As the display device to be applied, it is desirable to be a hold-type display device. For example, it is preferably applied to a liquid crystal display, an organic EL display, etc. Since hold-type display devices are prone to showing afterimages, it becomes possible to reduce afterimages by using double-speed driving.

[0096] In this way, by performing super-resolution processing before the frame interpolation process, the resolution can be accurately improved. Since the image before the super-resolution processing is not subject to the frame interpolation process, no unnecessary processing is performed. Therefore, the super-resolution processing can be accurately performed. Then, by using the more accurate and higher-resolution image created by the super-resolution processing to perform the frame interpolation process, This allows for smoother images with less afterimage. Therefore, To obtain high-quality images, it is important to perform super-resolution processing before frame interpolation. This is the key point. However, the examples of embodiments are not limited to these.

[0097] Here, for an image where the horizontal resolution (number of pixels) is A and the vertical resolution (number of pixels) is B, By performing super-resolution processing, the horizontal resolution (number of pixels) becomes C, and the vertical resolution (number of pixels) becomes D. Let's say the image is as follows. Or, the horizontal resolution (number of pixels) is A, and the vertical resolution (number of pixels) is B. By applying scaling and super-resolution processing to an image, the horizontal resolution (pixels) can be increased. Let's say we have an image with a vertical resolution (number of pixels) of C and a vertical resolution (number of pixels) of D. Then, we perform super-resolution processing. By doing so, the magnification when the resolution is increased is C / A, which is the number obtained by dividing C by A. Alternatively, it can be said that it is D / B, which is the number obtained by dividing D by B. On the other hand, when double speed driving is performed, Let's assume the frame frequency is multiplied by N.

[0098] In this case, it is desirable that N > (C / A) or N > (D / B). Or, It is desirable that N≧(C / A) and N≧(D / B). However, in one embodiment... Examples are not limited to these.

[0099] When frame interpolation is performed for double-speed driving, the number of frame data to be interpolated is large. Even if you ask, you can create the data without any problems. For example, in the case of Figure 3(A) 2 Although it was initially at double speed, as shown in Figure 3(B), it can be easily tripled by adjusting the position of the circle. It is possible to do so. In other words, frame interpolation processing for double speed driving is performed on the interpolated frames. Even if the number of frame data increases, no major problems occur in the image. Or, by increasing the number of frame data, the video characteristics can be further improved, and it becomes possible to further reduce afterimages.

[0100] On the other hand, super resolution processing is a process of restoring the resolution information that has been lost during shooting or signal transfer, etc. Therefore, when too much information is lost, it becomes difficult to fully restore it. Therefore, if (C / A) or (D / B) is increased too much, problems occur in the image itself and the image becomes distorted.

[0101] From the above, when performing both frame interpolation processing and super resolution processing, it is desirable that N > (C / A ), or N > (D / B). Or, it is desirable that N ≥ (C / A) and N ≥ (D / B). Therefore, when performing both super resolution processing and frame interpolation processing, by satisfying this relationship, it is possible to display a high-quality image with clear visibility even in fine details and without an afterimage feeling. However, an example of the embodiment is not limited to this.

[0102] When performing frame interpolation processing, in the area where there is movement on the screen, data is often newly created for frame interpolation processing. And in the area where there is no movement on the screen, data is often not newly created. That is, within the screen, there are areas where new data is created by frame interpolation processing and areas where new data is not created. For example, in the case of FIG. 3(A), as shown in FIG. 3(C), In regions 301 and 303, the data from the first frame before interpolation and the data from the second frame before interpolation are used. There is no change in the frame data. Therefore, there is no change in the interpolated frame data either. No new data has been created; the data is from the first frame before interpolation, or... The data is created using the data from the second frame before interpolation. Meanwhile, region 302 So, is there a change between the data from the first frame before interpolation and the data from the second frame before interpolation? Therefore, there is an area to erase circles and an area to create circles, so new data is created. This will happen.

[0103] In this way, when frame interpolation is performed, new data is created within the screen. There may be areas where data is created and areas where no new data is created. The area changes moment by moment. For example, an example of an area where data is created is a caption. Examples include areas where text is displayed and moves up and down or left and right. In the case of letters and symbols, if afterimages appear and they become difficult to see, what kind of letters or symbols are they? This becomes a major problem because it becomes impossible to determine whether something is true or not.

[0104] Thus, when performing frame interpolation, new frames are generated only in a portion of the screen. Creating data in a different way can improve processing speed, reduce power consumption, or process It offers advantages such as improved accuracy.

[0105] On the other hand, even in super-resolution processing, it is not performed on the entire area of ​​the screen, but only on a portion of it. It is also possible to do this only in this way. In this way, super-resolution is applied only to a portion of the screen. When processing, the goal is to improve processing speed, reduce power consumption, improve processing accuracy, or reduce image quality. It has advantages such as reducing [unclear / unclear].

[0106] Therefore, within the screen, new data is created for frame interpolation processing. There is a first region and a second region where super-resolution processing is performed. Furthermore, frame interpolation processing Therefore, there is a third region where no new data is created and no super-resolution processing is performed. It is also possible. And the area where the first region and the second region do not overlap is within the screen. It becomes possible for the first region and the second region to overlap. The area can exist within the screen.

[0107] New data is created for frame interpolation, such as text and symbols in captions. Often, information is displayed, and super-resolution processing is performed on images with little movement. This is often done in a region. Therefore, within the screen, a new frame interpolation process is required. The first region where the data is created and the second region where the super-resolution processing is performed do not overlap. It is preferable that it has a certain area. The reason is as follows: In other words, frame supplement In the first region where new data is created for processing, there is movement, so afterimages occur. To prevent it from being visible, new data is created for frame interpolation, In areas with such movement, even if super-resolution processing is used to increase the resolution, the human eye may not perceive that resolution. It may become difficult to perceive the degree of motion. Therefore, in areas with such movement... Therefore, it can be said that there are cases where super-resolution processing is not performed. And the second case where super-resolution processing is performed In this domain, it is desirable to be able to see even the smallest details clearly, and to view still, motionless images. When displaying still images, even the finest details are clearly visible. It can be said that, because such a situation may occur, frame interpolation and super-resolution processing Both processes are performed, and a screen with the advantages of both can be displayed, and also, The first region is where new data is created for interpolation processing, and the second region is where super-resolution processing is performed. It is possible that region 2 has a region that does not overlap with other regions. As a result, a more appropriate drawing can be obtained. An image can be displayed. However, the examples of embodiments are not limited to this.

[0108] Next, as with edge enhancement and frame interpolation, the following steps are performed after the super-resolution process. In theory, the processing flow for overdrive processing is shown in Figure 1(C). Therefore, the content or drawings described in the case of contour enhancement processing also apply to other processing. It can be applied to the following. Similarly, the content or drawing described when performing a certain process is This can also be applied to other processes.

[0109] Overdrive processing is a process used to increase the response speed of liquid crystal elements. Typically, Each pixel on the screen is supplied with a signal that matches the grayscale to be displayed at that pixel. However, liquid In the case of crystal elements, the response speed is slow, so even if a signal matching the grayscale is supplied, it will take 1 frame period In the middle, it was not possible to display the image according to the grayscale, and after several frames had passed, it finally displayed the grayscale. The display will then match the tone. Therefore, when supplying voltage to the liquid crystal element, the original Instead of supplying a voltage that matches the grayscale, a voltage with a larger amplitude is supplied to the liquid crystal element. As a result, the transmittance of the liquid crystal element changes rapidly. Subsequently, the light that matches the original gradation is... Pressure is supplied. Through the above operations, the response speed of the liquid crystal element can be increased. In addition, a voltage with a larger amplitude value than the voltage that matches the original grayscale is applied, and the voltage that matches the original grayscale is applied. The process of temporarily supplying liquid crystal elements with power before supplying it is called overdrive. Then, what voltage should be used as a voltage with a larger amplitude value than the voltage that matches the original gradation? The process of deciding whether or not to supply power is called overdrive processing.

[0110] Thus, by performing overdrive processing after super-resolution processing, The response speed can be increased, and the amount of overdrive can be set to an appropriate size, It is possible to display images with fewer pixels. Alternatively, super-resolution processing is a process that creates a new image. Therefore, the image changes as a result of this process. Consequently, the gradation of each pixel changes. Therefore, after performing super-resolution processing, overdrive processing is performed. The overdrive processing can also be changed according to the amount of change caused by the super-resolution processing. This becomes possible. Therefore, by performing overdrive processing after super-resolution processing, This allows you to set the overdrive amount to an appropriate size, so that each pixel can achieve optimal gradation. This allows for faster response times and more accurate overdrive. It can perform driving. Furthermore, through super-resolution processing, it can display high resolution images without afterimages. It is possible to obtain it. Therefore, in order to obtain a good quality image, overdrive processing is necessary. Before performing this, it is important to perform super-resolution processing. However, one example of the embodiment does not include this. Not limited.

[0111] Here, the overdrive amount refers to the amount of overdrive processing applied to the liquid crystal elements. When the amplitude of the voltage supplied to a device increases, this refers to the amount of voltage increase that occurs at that time.

[0112] Furthermore, overdrive processing is performed in areas of the screen where movement occurs. There are many of them. And, in areas of the screen where there is no movement, afterimages do not occur, so overimages Overdrive processing is rarely performed. In other words, within the screen, overdrive processing is rarely performed. There are regions where processing is performed and regions where overdrive processing is not performed. These areas change moment by moment. Thus, only in a portion of the screen, Overdrive processing improves processing speed, reduces power consumption, or increases processing accuracy. It has advantages such as improvement.

[0113] On the other hand, even in super-resolution processing, it is not performed on the entire area of ​​the screen, but only on a portion of it. It is also possible to do this only in this way. In this way, super-resolution is applied only to a portion of the screen. When processing, the goal is to improve processing speed, reduce power consumption, improve processing accuracy, or reduce image quality. It has advantages such as reducing [unclear / unclear].

[0114] When processing is performed in a portion of the screen, overdrive processing is performed within that area of ​​the screen. There is a first region where the image is processed, and a second region where super-resolution processing is performed. Furthermore, both processes... It is also possible that a third region exists in which this does not occur. And the first region and the second region It becomes possible for areas that do not overlap with the first area to exist within the screen. Or, the first area It becomes possible for an area where the region and the second region overlap to exist within the screen.

[0115] Therefore, there is a first region where overdrive processing is performed and a second region where super-resolution processing is performed. Let's consider areas that do not overlap with other areas. In such situations, overdrive In the first region where processing takes place, there is movement, so to prevent afterimages from being visible... Then, overdrive processing is performed. However, in areas with such movement, if, Even if super-resolution processing is applied to increase the resolution, it may become difficult for the eye to perceive that increased resolution. It is possible. Therefore, in areas with such movement, super-resolution processing is not performed. If there is a match, then in such cases, the first region where overdrive processing is performed. This means that there may be a region that does not overlap with the second region where super-resolution processing is performed. This is possible. And in such cases, in the second region where super-resolution processing is performed, fine details This is an area where it is desirable to be able to see even the smallest details clearly, and where still images, like static images, are preferred. When displayed, it becomes possible to see even the smallest details clearly, and as a result, The first region where super-drive processing is performed and the second region where super-resolution processing is performed overlap. It can be said that there are areas that are not covered.

[0116] The first region where overdrive processing is performed and the second region where super-resolution processing is performed are In overlapping areas, the response speed is fast, the image has little afterimage, and even the fine details are sharp. Because it can be viewed in this way, it is possible to display images that have a sense of realism.

[0117] Previously, after super-resolution processing, edge enhancement processing, frame interpolation processing, and overdrive processing were performed. We have discussed the process of performing the processing, but the processing performed after super-resolution processing is not limited to these. i. Similar to when performing contour enhancement, frame interpolation, and overdrive processing, superresolution After image processing, local dimming (local brightness control of the backlight) can also be performed. It is possible. The processing flow in that case is shown in Figure 1(D). Therefore, contour enhancement processing, frame When performing interpolation processing or overdrive processing, the content or drawings described may be local data. The same can be applied when performing timing (local brightness control of the backlight). It is possible. Similarly, when local dimming (local brightness control of the backlight) is performed The contents or drawings described above can be similarly applied when performing other processes. be.

[0118] Here, local dimming (local brightness control of the backlight) refers to controlling the brightness of each area within the screen. This refers to a technology that displays information by changing the brightness of the backlight. Therefore, Depending on the image, the backlight brightness will differ for each area within a single screen. Example For example, if there is an area on the screen that displays low gradation, the brightness of the backlight in that area will be reduced. Make it smaller. Furthermore, if there is an area on the screen that displays high gradation, the background of that area Increase the brightness of the lights. Then, based on the brightness of those backlights, the brightness of each pixel The transparency is determined to ensure that the correct image is displayed. This allows for lower gradation within the screen. In the area where the display is located, the brightness of the backlight itself is low, so the effect of light leakage is reduced. This is possible. Therefore, if you want to display black in such an area, you can use complete black. It becomes possible to display this. Also, in areas of the screen where high gradation is to be displayed, the backlight Because the brightness of the device itself is high, it can display a sufficiently bright image. If you want to display white in a given area, increase the brightness to a higher level than for normal white, and set the peak brightness to a higher level. By increasing the brightness, it becomes possible to display the image. Therefore, it is possible to improve the contrast. Furthermore, it will be possible to display images with good contrast. In addition, local dimming Furthermore, the brightness of the backlight itself can be reduced, which makes it possible to reduce power consumption. Therefore, in order to perform local dimming, the background of each region should be adjusted according to the image you want to display. The process for determining the brightness of the light, and the display based on that backlight brightness. There is a process to determine the transparency of each pixel so that the image can be displayed correctly. The process of performing these operations, or a part of these operations, is called local dimming. Therefore, local dimming is a process that determines the brightness of the backlight in each area. After performing this step, it is possible to perform the process of determining the video signal to be supplied to each pixel. Furthermore, the examples of embodiments are not limited to these. Therefore, as an example, the back of each region The process of determining the brightness of the light and the process of determining the video signal to be supplied to each pixel are separated. The processing flow when described can also be represented as shown in Figure 1(E).

[0119] Thus, it is preferable to perform local dimming after performing super-resolution processing. When super-resolution processing is performed, the restoration of information results in a state where new information appears to be added. Therefore, the number of tonal gradations for each pixel may differ before and after super-resolution processing. Before and after super-resolution processing, there will be areas within the image where the number of pixel tones changes. Therefore, after the image information has been restored by super-resolution processing, the local disk By performing the dimming process, accurate local dimming can be performed. Therefore, it is possible to improve contrast and display accurate images. Therefore, in order to obtain a high-quality image, perform super-resolution processing before local dimming. It is important to do so. Alternatively, in local dimming processing, the brightness of the backlight Before performing the process to determine the local disk, it is important to perform super-resolution processing. In the mingling process, before the process of determining the video signal to be supplied to the pixels is performed, super-resolution processing is carried out. It is important to do so. However, the examples of embodiments are not limited to these.

[0120] Furthermore, when local dimming is performed, the backlight brightness decreases. Therefore, even if the transmittance of a pixel changes slightly, the actual display gradation does not change much. In other words, when the backlight brightness is low, the transmittance of the pixels changes. This makes it possible to express finer gradations. In other words, the number of gradations that can be displayed increases. It can be made to appear larger. Therefore, local dimming and super-resolution processing are used. By performing both of these processes, high-resolution images can be displayed with high expressiveness that allows even fine details to be distinguished. This makes it possible to display gradations appropriately, especially in the darker areas of the screen. This allows for displaying images where the gradation is lost or obscured.

[0121] Furthermore, in areas of the screen where there are many displays with a low grayscale level, local dimming processing is performed. This is often done. And in areas of the screen where there are many displays with a high number of gray levels, Furthermore, in areas with high brightness and many bright displays, it is difficult to lower the brightness of the backlight, Local dimming is rarely performed. In other words, within the screen, local dimming is rarely performed. There are areas where dimming is performed and areas where local dimming is not performed. And those areas change moment by moment. In this way, some areas on the screen When local dimming is performed, processing speed is improved, power consumption is reduced, and This offers advantages such as improved processing accuracy.

[0122] On the other hand, even in super-resolution processing, it is not performed on the entire area of ​​the screen, but only on a portion of it. It is also possible to do this only in this way. In this way, super-resolution is applied only to a portion of the screen. When processing, the goal is to improve processing speed, reduce power consumption, improve processing accuracy, or reduce image quality. It has advantages such as reducing [unclear / unclear].

[0123] When processing is performed in a specific area of ​​the screen, local dimming is performed within that area of ​​the screen. This process is performed in a first region where the brightness of the backlight is reduced, and in a second region where super-resolution processing is performed. A region exists. Furthermore, both local dimming and super-resolution processing are performed. It is also possible that a third region exists that is not affected. And local dimming is performed. This divides the image into a first region where the backlight brightness is reduced and a second region where super-resolution processing is performed. It becomes possible for areas that do not overlap to exist within the screen. Or, the first area An overlapping area between this and the second area can exist within the screen.

[0124] Local dimming is performed in a first region where the brightness of the backlight is reduced, In the region where the second region where super-resolution processing is performed overlaps, the contrast is high and the image is smooth. Because it is an image capable of tonal gradation and allows you to see even the finest details clearly, it creates a sense of realism. It is possible to display images that evoke a sense of something.

[0125] When local dimming is performed, the screen is divided into multiple areas, and each area is divided into... Each has a backlight. The length (or width) of that area, or the area The image shows the pitch and a portion of the screen where super-resolution processing has been applied, resulting in an improved image resolution. When comparing the pixel length (or width), or pitch, of the display device, the backlight Preferably, the length (or width) of the region, or the pitch of that region, is longer. Because when performing local dimming, not only the brightness of the backlight in each area, but also the picture The image is displayed while also controlling the original transparency. Therefore, it displays an image that has undergone super-resolution processing. Even in that case, the length (or width) of the backlight area, or the pitch of that area Even if the image is long, if the pitch of each pixel is short, a sufficiently clear and high-resolution display can be achieved. .

[0126] Figures 1(A) through 1(E) show the processing flow, but how to implement it An example of the configuration (block diagram) is shown in Figure 1(F). An image saw is connected to the input terminal of circuit 101. A signal is input. Then, the output terminal of circuit 101 is connected to the input terminal of circuit 102. Circuit 101 has the function of performing super-resolution processing. Circuit 102 performs edge enhancement processing. A machine that performs frame interpolation, overdrive, or local dimming. It has the ability. Circuit 101 or circuit 102 is a memory circuit for storing information. It is possible to have ) or circuit 101 or circuit 102 for calculation It is possible to have such a unit.

[0127] Furthermore, circuits 101 and / or 102 each perform their respective functions using hardware. It is possible to achieve this manually, or to implement the functionality using software. Furthermore, it is possible to implement the functionality using both hardware and software. By using software, it becomes possible to increase processing speed. Alternatively, It is possible to reduce power consumption. This can be achieved using software, within the processing time. By changing the contents, it becomes possible to perform various processes as needed.

[0128] Furthermore, if the number of processes increases, it is possible to increase the number of circuits such as circuits 101 and 102. Therefore, the circuit can be constructed in the same way as in Figure 1(F).

[0129] Furthermore, in the content described above, and / or the content described below, super-resolution processing is used. Alternatively, it is also possible to perform simple scaling or other similar operations.

[0130] (Embodiment 2) Next, we will discuss examples of super-resolution processing techniques. By performing super-resolution processing, the resolution can be increased. It becomes possible to display images.

[0131] First, a region with motion is detected, and velocity information for that region is extracted. In other words, at any given time For an image at a point, this is a vector representing the flow of each pixel from the two images before and after that point. The optical flow is determined. Then, from the extracted velocity information, the amount per image in that region is calculated. The amount of positional displacement is detected with an accuracy of less than the size of one pixel. In other words, the calculated optical flow The amount of positional displacement between images is determined from this. Then, based on the detected amount of positional displacement, multiple images in the sequence are selected. The brightness values ​​between pixels are interpolated from the images. By performing this process, the physical solution It is possible to generate high-resolution images that exceed the resolution limit. In this way, super-resolution processing technology is For high-resolution image restoration, information is extracted from low-resolution images based on motion vector information, etc. It can be said that this is a technology for extraction and restoration.

[0132] As a similar super-resolution processing technique, for example, first, a sequence of highly correlated images is extracted from the video. Select a frame. Then, detect the motion vector of the video with a level of detail close to that of a single pixel. It does so. Then, it tracks the movement at the pixel level and the changes in that tracked pixel between each frame. From the report, we try to estimate the missing high-resolution pixels. At that time, the camera shakes slightly. Therefore, even though the same area is being photographed, the low-resolution part of the photograph is distorted. The method differs between frames. Therefore, this information is used to fill in missing pixels and improve performance. This makes it possible to increase the resolution. In other words, this processing method involves a deeper search in the time direction. It can be said that this is a type of super-resolution processing technology. In this type of super-resolution processing, motion vector Because it can precisely capture the frame, it is possible to capture the inter-frames that could not be obtained due to camera resolution limitations during shooting. This also makes it possible to restore missing pixels.

[0133] Alternatively, as another super-resolution process, similarity can be investigated across multiple frames. By aligning similar frames, we can understand the temporal changes in each pixel. This method involves predicting and generating lost high-resolution pixels.

[0134] Alternatively, another super-resolution processing method involves first analyzing a series of consecutive image data. Then, The high-frequency components are restored by correcting common areas of the subject. This results in a high-resolution image. You can obtain it.

[0135] Alternatively, a reconstruction-type super-resolution processing method can be used as another type of super-resolution processing. In reconstruction-type super-resolution processing methods, a high-resolution image (initial high resolution) is first created from the original low-resolution image. Assume a resolution image. Then, from the assumed high-resolution image, the camera model obtains Based on the point spread function (PSF function), for every pixel in all low-resolution images, its pixel value This estimates the original low value by downconverting it using a proprietary function (imaging model function). It creates a low-resolution image that is the same resolution as the high-resolution image. Then, it compares the estimated values ​​with the observed pixel values. The difference is taken from (the observed value). Then, compared to the image before downconversion, when that difference becomes small... We search for high-resolution images that meet the criteria. This search process is repeated until convergence is achieved, and the accuracy is measured. It is also possible to improve this, or to perform the search only once. This allows us to obtain high-resolution images.

[0136] Furthermore, as an imaging model function, for example, a one-dimensional linear filter can be used vertically and horizontally, or two-dimensionally. It is possible to use a digit image sensor model.

[0137] In this reconstruction-type super-resolution processing method, the iterative calculations require an initial high-resolution image. We are trying to reconstruct a higher resolution image. And the calculation method at that time is M L(Maximum-likelihood) method, MAP(Maximum A Pos (terior) method, or POCS (Projection On to Conve Methods such as the x-Sets method can be used.

[0138] In the ML method, the estimated pixel values ​​from an assumed high-resolution image and the actually observed pixel values ​​are used. The squared error is used as the evaluation function. Then, the high-resolution image that minimizes this evaluation function is selected. This is a method for creating an estimated image.

[0139] The MAP method minimizes an evaluation function that adds probability information from high-resolution images to the squared error. This is a method for estimating high-resolution images. In other words, the MAP method is a method for estimating high-resolution images. Using foresight information, we estimate high-resolution images as an optimization problem that maximizes the posterior probability. This is a resolution processing method.

[0140] The POCS method creates a system of equations for the pixel values ​​of high-resolution and low-resolution images, and This is a method for solving the equation sequentially.

[0141] Furthermore, multiple frames of an image are combined into one frame. And as a result, pixels Increase the number of elements to increase the image resolution. At that time, cancel out the aliasing components. It is also possible to perform high-resolution processing.

[0142] Alternatively, iterative methods, frequency domain methods, and statistical methods can be used as super-resolution processing techniques. Yes, it is possible. The iterative method mainly consists of three stages. First, make an initial guess. The process consists of two parts: firstly, an imaging process, and secondly, a reconstruction process.

[0143] Furthermore, super-resolution processing can be applied to the entire screen. However, it is possible to implement it. Examples of the form are not limited to these. Depending on the content of the image, super-resolution processing may be performed. It is possible. For example, in an image, super-resolution processing is not performed on the edges or flat areas. In the staging area, super-resolution processing is possible. In that case, the image is subjected to real-time processing. Im-spectrum analysis is performed. Then, super-resolution processing is applied only to the region containing high frequencies. This is also possible. In this way, by controlling whether or not super-resolution processing is performed depending on the image, This makes it possible to reduce the chances of the image quality actually deteriorating.

[0144] A flat region is defined as a region where the frequency distribution of a specific frequency range or a concentrated range of brightness areas is high. This refers to the part that is blurred. Therefore, the sky, which has a relatively gentle color distribution, and the blurred background are examples of this. It corresponds to this. Therefore, in the image, it is a region where gradient expression is the main focus. It is possible to do so.

[0145] The texture region refers to the high-frequency portion of an image. In this region, the frequency Because the number is high, there is a high possibility that more detailed parts exist. Therefore, in the texture section... The effect of increasing resolution by performing super-resolution processing is very significant. It is possible.

[0146] Furthermore, when performing super-resolution processing, the resolution is recognized in various areas of the image. It is also possible to perform super-resolution processing of different intensities for each region.

[0147] Furthermore, if the original image has a sufficiently high resolution, do not perform super-resolution processing. This is possible.

[0148] As described above, there are various super-resolution processing techniques, but the super-resolution processing technique described herein is These are not the only options.

[0149] (Embodiment 3) In Embodiments 1 and 2, super-resolution processing and other processing, such as edge enhancement processing, are performed. Frame interpolation, overdrive, and local dimming (backlight local dimming) The following describes the case where the brightness control process is performed. However, the example of the embodiment is based on these. Not limited to super-resolution processing and other processing, other processing methods include edge enhancement, frame interpolation, and over - Processing such as drive processing and local dimming (local brightness control of the backlight) processing. It is also possible to do further.

[0150] Therefore, the contents (or at least some of them) described in Embodiment 1 and Embodiment 2, and Figure (1 It is possible to combine and apply (parts may also be used) to this embodiment. .

[0151] For example, the processing flow when another process is performed in addition to super-resolution processing and edge enhancement processing. — is shown in Figure 4. In other words, if you perform another process on the content described in Figure 1(A) This corresponds to a combination. However, the examples of embodiments are not limited to these.

[0152] In Figure 4(A), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. After increasing the frame frequency, frame interpolation is performed, and then, once the frame frequency has increased, edge enhancement processing is performed. The processing flow when performing this is shown. Therefore, the processing flow in Figure 4(A) is the same as in Figure 1(B). This also applies when contour enhancement processing is performed after the processing flow. Alternatively, the processing flow in Figure 4(A) The row corresponds to the case where frame interpolation is performed on the processing flow in Figure 1(A). .

[0153] Furthermore, after the edge enhancement processing is performed, various other processes are carried out, and then the image is displayed. It is possible to do so.

[0154] Thus, super-resolution processing is performed before frame interpolation and edge enhancement processing. This allows for precise improvement of resolution. The image before super-resolution processing is fre Since no interpolation or edge enhancement processing has been performed, no unnecessary processing has been applied. Therefore, it is possible to perform super-resolution processing accurately.

[0155] Then, by performing frame interpolation using more accurate, higher-resolution images, Frame interpolation data can be obtained more accurately, resulting in smoother images with less afterimage. This allows us to obtain a good image. In particular, by performing frame interpolation before performing edge enhancement processing. Therefore, it is possible to create frame interpolation data accurately. And, more accurately, resolution By using high-resolution images and performing edge enhancement processing, the contours of objects in the image can be extracted more accurately. This allows you to obtain clearer images.

[0156] In Figure 4(B), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. After increasing the frame rate, edge enhancement processing is performed, followed by frame interpolation processing, and the frame frequency is adjusted. The processing flow for increasing the value is shown. Therefore, the processing flow in Figure 4(B) is the same as in Figure 1(B). This also applies to the case where contour enhancement processing is applied to the processing flow shown. Alternatively, see Figure 4(B) The processing flow is equivalent to the case where frame interpolation processing is performed after the processing flow shown in Figure 1(A). ru.

[0157] Furthermore, after frame interpolation is performed, various other processes are carried out, and then the image is displayed. It is possible to demonstrate this.

[0158] Thus, super-resolution processing is performed before edge enhancement and frame interpolation processing. This allows for precise improvement of resolution. The image before super-resolution processing shows contours. Since no enhancement or frame interpolation processing has been performed, no unnecessary processing has been applied. Therefore, it is possible to perform super-resolution processing accurately.

[0159] Then, by performing frame interpolation using more accurate, higher-resolution images, Frame interpolation data can be obtained more accurately, resulting in smoother images with less afterimage. A clear image can be obtained. Furthermore, edge enhancement processing is performed before frame interpolation. Therefore, the amount of data to be processed for contour enhancement is small. As a result, the processing time can be shortened. ru.

[0160] In Figure 4(C), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. Processing flow when performing contour enhancement after raising the image, followed by overdrive processing. —This indicates that the processing flow in Figure 4(C) is different from the processing flow in Figure 1(C). This also applies to cases where contour enhancement processing is performed. Alternatively, the processing flow in Figure 4(C) is the same as in Figure 1(A This also applies when overdrive processing is performed after the processing flow of ).

[0161] Thus, by performing super-resolution processing before edge enhancement processing, the resolution can be accurately determined. This can improve the image. The image before super-resolution processing does not have edge enhancement processing applied. Therefore, no unnecessary processing is performed. As a result, super-resolution processing can be performed accurately. Alternatively, after performing super-resolution processing and edge enhancement processing, overdrive processing can be performed. This allows for faster response times and enables the amount of overdrive to be set to an appropriate level. This allows for display with less afterimage. Alternatively, it enables super-resolution processing and edge enhancement. As the image changes due to the processing, the gradation of each pixel changes, and therefore the change Depending on the amount, the overdrive processing can also be changed. After processing and contour enhancement, overdrive processing is performed. - The amount of drive can be set to an appropriate size, so that each pixel can be given the optimal gradation. Yes, it is possible. Therefore, the response speed can be increased, and accurate overdrive driving can be performed. This is possible. Furthermore, super-resolution processing allows for a high-resolution display without afterimages. It will come. Furthermore, edge enhancement processing will make it possible to display images with sharper outlines. Therefore, in order to obtain a good quality image, before performing overdrive processing, Resolution processing and edge enhancement processing are important. However, one example of the embodiment is... It is not limited to this.

[0162] In Figure 4(D), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. Processing steps when performing edge enhancement after raising the image, followed by local dimming. This shows the row. Therefore, the processing flow in Figure 4(D) is different from the processing flow in Figure 1(D). This also applies when contour enhancement processing is performed. Alternatively, the processing flow in Figure 4(D) is the same as in Figure 1( This also applies to cases where local dimming is performed after the processing flow in A).

[0163] Thus, by performing super-resolution processing before edge enhancement processing, the resolution can be accurately determined. This can improve the image. The image before super-resolution processing does not have edge enhancement processing applied. Therefore, no unnecessary processing is performed. As a result, super-resolution processing can be performed accurately. .

[0164] Alternatively, local dimming can be performed after super-resolution processing and edge enhancement processing. This is preferable. When super-resolution processing is performed, new information is added through information restoration. This results in a state where the number of tonal gradations for each pixel may differ before and after super-resolution processing. Yes, or there are areas within the image where the number of pixel tones changes before and after super-resolution processing. Similarly, an image in which the outlines of objects are enhanced by edge enhancement processing. This process results in areas within the image where the number of pixel gradations changes. Therefore, super-resolution processing restores the image information, and then edge enhancement processing is performed. Therefore, by performing local dimming after image processing, accurate results can be achieved. Because it can perform local dimming, it can improve contrast. Therefore, accurate images can be displayed. Thus, in order to obtain images of good quality, It is important to perform super-resolution processing and edge enhancement processing before performing local dimming processing. Yes. Or, in local dimming processing, the process that determines the brightness of the backlight Before proceeding, it is important to perform super-resolution processing and edge enhancement processing. Alternatively, local data In the pixel processing, before the process of determining the video signal to be supplied to the pixels is performed, super-resolution processing It is important to perform processing and contour enhancement. However, one example of the embodiment is to perform these processes. Not limited.

[0165] In Figure 4(E), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. After increasing the frame rate, frame interpolation is performed, and then overdrive is applied. The processing flow when performing the operation is shown. Therefore, the processing flow in Figure 4(E) is the same as in Figure 1(B). This also applies when overdrive processing is performed after the processing flow of ). Or, Figure 4 ( The processing flow in E) is the result of applying frame interpolation to the processing flow in Figure 1(C). It is equivalent to this.

[0166] Thus, by performing super-resolution processing before frame interpolation, the resolution can be accurately resolved. The image quality can be improved. The image before super-resolution processing undergoes frame interpolation. Because it hasn't been processed, no unnecessary processing has been done. Therefore, it can perform super-resolution processing accurately. It is possible.

[0167] Alternatively, after performing super-resolution processing and frame interpolation, overdrive processing can be performed. By doing so, the response speed can be increased, and the amount of overdrive can be set to an appropriate level. This allows for display with less afterimage. Alternatively, super-resolution processing and frame Due to interpolation processing, the gradation of each pixel changes as the image changes, Depending on the amount of change, the overdrive processing can also be changed. Frame interpolation increases the frame frequency, and therefore, overdrying occurs accordingly. It also becomes possible to change the processing. Therefore, super-resolution processing and frame interpolation processing After that, by performing overdrive processing, the amount of overdrive can be adjusted to an appropriate level. Because the size can be reduced, each pixel can be set to the optimal gradation. Therefore, the response speed It can increase the speed and perform accurate overdrive. Furthermore, Resolution processing allows for a high-resolution display without afterimages. Therefore, it is good. To obtain high-quality images, super-resolution processing and frame processing are performed before overdrive processing. It is important to perform interpolation processing. However, the embodiment is not limited to this example. .

[0168] In Figure 4(F), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. After increasing the frame rate, frame interpolation is performed to increase the frame frequency, followed by local dimming. The processing flow when performing the operation is shown. Therefore, the processing flow in Figure 4(F) is the same as in Figure 1(B). This also applies when local dimming is performed after the processing flow of ). Or, Figure 4 The processing flow in (F) is the same as the processing flow in Figure 1(D) but with frame interpolation applied. It is equivalent to a combination.

[0169] Thus, by performing super-resolution processing before frame interpolation, the resolution can be accurately resolved. The image quality can be improved. The image before super-resolution processing undergoes frame interpolation. Because it hasn't been processed, no unnecessary processing has been done. Therefore, it can perform super-resolution processing accurately. It is possible.

[0170] Alternatively, after performing super-resolution processing and frame interpolation processing, perform local dimming processing. It is desirable to do so. When super-resolution processing is performed, new information is added through the restoration of information. This results in a state where the number of gradations for each pixel differs before and after super-resolution processing. There is a region within the image where the number of pixel tones changes before and after super-resolution processing. Similarly, a new frame is created through frame encapsulation, and a new An image is created. Therefore, there is a region within the screen where the number of pixel gradations changes. Therefore, super-resolution processing restores the image information, and frame interpolation is performed. After image processing is performed through intermediate processing, local dimming is performed. Because it can perform local dimming accurately, it improves contrast. This allows for accurate image display. Therefore, to obtain a good quality image... Therefore, before performing local dimming, perform super-resolution processing and frame interpolation processing. This becomes important. Alternatively, in local dimming processing, the brightness of the backlight is determined. Before performing the final processing, it is important to perform super-resolution processing and frame interpolation processing. Alternatively, in local dimming processing, a process is performed to determine the video signal to be supplied to the pixel. Before proceeding, it is important to perform super-resolution processing and frame interpolation. However, the implementation form Examples of states are not limited to these.

[0171] In Figure 5(A), super-resolution processing is performed using the image signal obtained from the image source to increase the resolution. If you perform local dimming after raising the signal level, and then perform overdrive processing: This shows the processing flow. Therefore, the processing flow in Figure 5(A) is the same as the processing flow in Figure 1(C). This also applies when local dimming is performed. Alternatively, the treatment shown in Figure 5(A) The processing flow is equivalent even if overdrive processing is performed after the processing flow in Figure 1(D). do.

[0172] Thus, it is preferable to perform local dimming after performing super-resolution processing. When super-resolution processing is performed, the restoration of information results in a state where new information appears to be added. Therefore, the number of tonal gradations for each pixel may differ before and after super-resolution processing. Before and after super-resolution processing, there will be areas within the image where the number of pixel tones changes. Therefore, after the image information has been restored by super-resolution processing, the local disk By performing the dimming process, accurate local dimming can be carried out. Therefore, it is possible to improve contrast and display accurate images. Therefore, in order to obtain a high-quality image, perform super-resolution processing before local dimming. It is important to do so. Alternatively, in local dimming processing, the brightness of the backlight Before performing the process to determine the local disk, it is important to perform super-resolution processing. In the mingling process, before the process of determining the video signal to be supplied to the pixels is performed, super-resolution processing is carried out. It is important to do so. However, the examples of embodiments are not limited to these.

[0173] Alternatively, after performing super-resolution processing and local dimming processing, overdrive processing By performing this process, the response speed can be increased, and the amount of overdrive can be set to an appropriate level. It can be made smaller and display with less afterimage. Alternatively, super-resolution processing and Due to local dimming processing, the brightness of the image and backlight changes accordingly. Since the gradation of each pixel changes, the overdrive processing also changes according to the amount of that change. This makes it possible to do so after performing super-resolution processing and local dimming processing. Then, by performing overdrive processing, the amount of overdrive is set to an appropriate size. This allows each pixel to be set to the optimal gradation. Therefore, the response speed is fast. It can perform overdrive operations accurately. Furthermore, it can perform super-resolution processing. This allows for a high-resolution display without afterimages. Furthermore, local dimming... The processing makes it possible to display images with high contrast. Therefore, good To obtain high-quality images, super-resolution processing and local processing are performed before overdrive processing. It is important to perform rudimentary processing. However, the embodiment is not limited to this example. I can't.

[0174] Thus, when performing both local dimming and overdrive processing, see Figure As shown in 5(B), after local dimming, overdrive processing is performed. It is preferable to carry out the following. However, the examples of embodiments are not limited to this. It is possible for various other processes to be performed before and after each stage in the logic flow. Examples of various processing techniques include super-resolution processing, edge enhancement processing, frame interpolation processing, and overdrive processing. There are processes such as IVE processing, local dimming, IP conversion, and scaling, and furthermore, other Processing is also possible.

[0175] Therefore, in Figure 4(D), when overdrive processing is performed, or in Figure 4( In C), if local dimming is performed, the processing flow is as shown in Figure 5(C). It is preferable that this be the case. However, the examples of embodiments are not limited thereto.

[0176] Alternatively, in Figure 4(F), when overdrive processing is performed, or in Figure 4(E) In this case, when local dimming is performed, the processing flow is as shown in Figure 5(D). It is preferable that there be a certain feature. However, the examples of embodiments are not limited to this.

[0177] Next, in Figure 6(A), super-resolution processing is performed using the image signal obtained from the image source, and the resolution is resolved. After increasing the image quality, frame interpolation is performed, the frame frequency is increased, and then edge enhancement processing is applied. This shows the processing flow when performing a basic operation followed by an overdrive operation. However, the implementation is subject to change. Examples of the form are not limited to this. Therefore, the processing flow in Figure 6(A) is the same as in Figure 4( This also applies to the case where overdrive processing is performed after the processing flow in A). Or, see Figure 6. The processing flow in (A) is the same as the processing flow in Figure 4(C) but with frame interpolation applied. It also corresponds to a combination. Alternatively, the processing flow in Figure 6(A) is equivalent to the processing flow in Figure 4(E). This also applies to cases where edge enhancement processing has been performed.

[0178] Similarly, in Figure 6(B), super-resolution processing is performed using the image signal obtained from the image source. After increasing the resolution, edge enhancement processing is performed, followed by frame interpolation processing, and then frame This shows the processing flow when overdrive processing is performed after increasing the frequency. However, in practice... Examples of the implementation form are not limited to this. Therefore, the processing flow in Figure 6(B) is the same as in Figure 4. This also applies when overdrive processing is performed after the processing flow in (B). Alternatively, see Figure The processing flow in 6(B) is the same as the processing flow in Figure 4(C), but with frame interpolation applied. This also applies to the case where the processing flow in Figure 6(B) is equivalent to the processing flow in Figure 4(E). This also corresponds to the case where edge enhancement processing has been performed.

[0179] As shown in Figures 6(A) and 6(B), before performing edge enhancement and frame interpolation processing. Furthermore, by applying super-resolution processing, the resolution can be accurately improved. The image before processing has not undergone edge enhancement or frame interpolation, therefore it is unnecessarily complex. No processing has been performed. Therefore, super-resolution processing can be performed accurately.

[0180] Similarly, as shown in Figures 6(A) and 6(B), super-resolution processing, frame interpolation processing, and Furthermore, by performing overdrive processing after edge enhancement processing, the response speed is increased. It can be made faster, the amount of overdrive can be set to an appropriate size, and there is less afterimage. It can perform display operations such as super-resolution processing, frame interpolation processing, and edge enhancement. As the image changes due to the processing, the gradation of each pixel changes, and therefore the change Depending on the amount, the overdrive processing can also be changed. Alternatively, frame compensation can be used. Inter-processing increases the frame frequency, so overdrive processing is also required accordingly. It becomes possible to change it. Therefore, super-resolution processing, frame interpolation processing, and contour processing are possible. After performing enhancement processing, overdrive processing is performed, which determines the amount of overdrive. Because it can be made to the appropriate size, each pixel can be given the optimal gradation. This allows for faster response times and more accurate overdrive operation. Furthermore, super-resolution processing allows for high-resolution display without afterimages. Therefore, in order to obtain a high-quality image, super-resolution processing should be performed before overdrive processing. Frame interpolation and contour enhancement processing are important. However, in the embodiment... This is just one example, and is not limited to this.

[0181] Next, in Figure 6(C), super-resolution processing is performed using the image signal obtained from the image source, and the resolution is... After increasing the image quality, frame interpolation is performed, the frame frequency is increased, and then edge enhancement processing is applied. This shows the processing flow when performing a basic operation followed by local dimming. However, in practice... Examples of the implementation form are not limited to this. Therefore, the processing flow in Figure 6(C) is the same as in Figure 4. This also applies when local dimming is performed after the processing flow in (A). Or, The processing flow in Figure 6(C) is the same as the processing flow in Figure 4(D), but with frame interpolation applied. This also applies to the case where... Alternatively, the processing flow in Figure 6(C) is equivalent to the processing flow in Figure 4(F). This also corresponds to the case where edge enhancement processing has been performed.

[0182] Similarly, in Figure 6(D), super-resolution processing is performed using the image signal obtained from the image source. After increasing the resolution, edge enhancement processing is performed, followed by frame interpolation processing, and then frame This shows the processing flow when local dimming is performed after increasing the frequency. However, The embodiment is not limited to this example. Therefore, the processing flow in Figure 6(D) is shown in Figure This also applies to cases where local dimming is performed after the processing flow in 4(B). The processing flow in Figure 6(D) performs frame interpolation on the processing flow in Figure 4(D). This also applies to the case where... Alternatively, the processing flow in Figure 6(D) corresponds to the processing flow in Figure 4(F). In contrast, this is equivalent to the case where edge enhancement processing has been performed.

[0183] As shown in Figures 6(C) and 6(D), before performing edge enhancement and frame interpolation processing. Furthermore, by applying super-resolution processing, the resolution can be accurately improved. The image before processing has not undergone edge enhancement or frame interpolation, therefore it is unnecessarily complex. No processing has been performed. Therefore, super-resolution processing can be performed accurately.

[0184] Similarly, as shown in Figures 6(C) and 6(D), super-resolution processing, frame interpolation processing, and Furthermore, it is desirable to perform local dimming after performing edge enhancement processing. Super Resolution When the process is performed, the data is restored, and it appears as if new information has been added. Therefore, the number of tonal gradations for each pixel may differ before and after super-resolution processing. Before and after this, there will be a region within the screen where the number of pixel gradations changes. Similarly, Frame interpolation creates a new frame and a new image. This results in a region within the image where the number of grayscale levels of pixels changes. Similarly, edge enhancement processing... This process enhances the outlines of objects within the image, resulting in a more detailed image. A region where the tonality changes will exist within the screen. Therefore, by super-resolution processing... The image information is restored, and then the image is processed through frame interpolation. After edge enhancement processing is performed, local dimming is applied to accurately reduce the raw image. Caldimming can improve contrast and create more accurate images. It can be displayed. Therefore, in order to obtain a good quality image, local diminutives are necessary. Before performing the processing, super-resolution processing, frame interpolation processing, and edge enhancement processing can be performed. This becomes important. Alternatively, it determines the brightness of the backlight during local dimming. Before processing, it is important to perform super-resolution processing, frame interpolation processing, and edge enhancement processing. This is crucial. Alternatively, it determines the video signal supplied to each pixel during local dimming. Before performing the following processing, super-resolution processing, frame interpolation processing, and edge enhancement processing should be performed. This is important. However, the examples of embodiments are not limited to these.

[0185] Furthermore, if both local dimming and overdrive processing are performed, see Figure 5( Similar to B), perform local dimming followed by overdrive processing. This is preferable.

[0186] Therefore, in Figure 6(C), when overdrive processing is performed, or in Figure 6( In A), if local dimming is performed, the processing flow is as shown in Figure 7(A). It is preferable that this be the case. However, the examples of embodiments are not limited thereto.

[0187] Alternatively, in Figure 6(D), when overdrive processing is performed, or in Figure 6(B) In this case, when local dimming is performed, the processing flow is as shown in Figure 7(B). It is preferable that there be a certain feature. However, the examples of embodiments are not limited to this.

[0188] (Embodiment 4) Next, we will describe a case where part of the processing flow is modified. Therefore, other embodiments It is possible to apply the content described above.

[0189] Figure 8(A) shows an example of a modified version of part of Figure 1(E) or Figure 4(F). First, super-resolution processing is performed, followed by frame interpolation. At the same time, local data This process controls the brightness of the backlight during the timing process. Then, it performs frame interpolation. Data with a higher frame frequency due to processing, and data with a lower frame frequency but determined in each region. Using the brightness data of the backlight in the region, for each pixel in local dimming processing... This process determines which video signal to supply.

[0190] When frame interpolation is performed, the image may not change significantly. On the other hand, The spacing of the backlights is much larger than the pixel pitch. Therefore, Using the data before frame interpolation, each region in local dimming is processed. Performing a process to determine the brightness of the backlight does not pose any practical problems.

[0191] By performing the process shown in Figure 8(A), frame interpolation and local dimming are performed. To enable simultaneous processing of backlight brightness control in the logic, the overall processing time This makes it possible to shorten the processing time. Therefore, it becomes possible to shorten the processing time for things that require real-time performance, such as games. Even when displaying complex information, it can be displayed without delay.

[0192] Furthermore, in Figure 8(A), additional processes such as edge enhancement and overdrive processing are also performed. This is possible. As an example, Figure 8(B) shows an example where edge enhancement processing has also been performed. However, the examples of embodiments are not limited to these.

[0193] Next, Figure 9 shows an example of a modified version of Figure 1(D). First, super-resolution processing This is done. And at the same time, the control of backlight brightness in local dimming processing The process is performed. Then, super-resolution processing is applied to the data, resulting in higher resolution data and lower resolution data. Using the brightness data of the backlight in each defined area, local dimming processing is performed. This process determines the video signal to be supplied to each pixel.

[0194] When super-resolution processing is performed, the image may not change very much. On the other hand, the background The pitch of the light arrangement is much larger compared to the pixel pitch. Therefore, superresolution Using the data before image processing, the backlight of each region in local dimming is used. Performing a process to determine the brightness of the light does not pose any practical problems.

[0195] By performing the process shown in Figure 9, super-resolution processing and local dimming processing are achieved. To shorten the overall processing time by simultaneously performing the processing for controlling the brightness of the black light. This makes it possible to display information that requires real-time performance, such as in games. Even in such cases, it can be displayed without delay.

[0196] In addition, in Figure 9, contour enhancement processing, overdrive processing, frame interpolation processing, etc. are also shown. It is possible to do this additionally.

[0197] (Embodiment 5) This embodiment describes an example of a lighting device. The lighting device is located behind the liquid crystal display device. It can be used as a light or an interior light, etc. However, this is just one example of an embodiment. This is not limited to this.

[0198] Figure 10 shows a backlight or lighting device using a point light source. As shown in 0(A), the device 1001 has multiple point light sources 1002 arranged in it. By arranging the point light sources 1002 in a specific pattern, it becomes possible to construct a uniform surface light source. Device 1001 can be used as a backlight for a liquid crystal display device, or as part thereof. It is possible.

[0199] And threshold 1003 is positioned extending horizontally. Also, threshold 1004 They are arranged in a vertical direction. Multiple thresholds 1003 and 1004 are used. By arranging them, the area light source can be divided into multiple regions. In Figure 10(A), The vertical direction is divided into 3 regions, and the horizontal direction is divided into 9 regions. Therefore, The threshold reduces light leakage into other areas. And each area has a point light source 10 By controlling the brightness of 02, local dimming (local brightness control of the backlight) is achieved. Local DIMMING can be achieved. In particular, by setting the threshold This reduces light leakage to other areas, allowing for precise control of brightness in each region. This makes it easier to derive the transmittance of each pixel's liquid crystal element. Because there is less of it, the contrast can be improved. However, one example of the embodiment is This is not limited to this.

[0200] Alternatively, you could turn off a portion of the light source and move that unlit state around the screen. It is possible to partially turn off point light sources within the screen and then turn off the area where the light source is turned off. It is possible to scan. For example, it is possible to scan from top to bottom. By performing this type of backlight scanning, afterimages are reduced and video characteristics are improved. It is possible to do so.

[0201] Furthermore, thresholds, such as threshold 1003, are arranged to extend horizontally. It is also possible to place only objects. Alternatively, a threshold such as threshold 1004 can be used. It is also possible to arrange only items that are arranged vertically, or, It is also possible to not set a threshold at all.

[0202] Furthermore, the surface of threshold 1003 or threshold 1004 is either mirror-finish or white. It is preferable to do so. However, the examples of embodiments are not limited thereto. Because it can reflect light, it can make effective use of light. Power consumption can be reduced. In the case of white light, light can be diffused. Therefore, Because the boundaries of the area become less visible, visibility can be improved.

[0203] Furthermore, the transmittance of threshold 1003 or threshold 1004 should be 50% or less, preferably 30%. It is desirable that it be less than or equal to %. Alternatively, the transmittance of threshold 1003 or threshold 1004 is... It is desirable that the amount be 1% or more, preferably 5% or more. However, one example of the embodiment is This is not limited to these. Low transmittance reduces light leakage and allows for control of brightness in each region. This allows for more precise control. However, if it is not completely transparent, the boundaries of the area will be visible. However, visibility may be reduced. Therefore, by allowing a slight amount of light to pass through, the area This makes the boundaries less visible, which can improve visibility.

[0204] Note that threshold 1003 or threshold 1004 is made of acrylic, plastic, or polycarbonate. It can be constructed using organic materials such as nate or PET. However, this is not applicable to all embodiments. This is just one example, and is not limited to this.

[0205] It is also possible to provide a spacer 1005. However, one example of this embodiment is... It is not limited to this, and it is also possible to omit the spacer 1005. The spacer 1005 is A sheet placed on top of a point light source 1002, threshold 1003, or threshold 1004. It has a function to prevent it from bending or sagging.

[0206] Furthermore, when providing spacers 1005, it is recommended to use a small number rather than too many. This is possible. Therefore, for example, in Figure 10(A), there are three regions in the vertical direction and horizontal direction It is divided into 9 regions, and has a total of 27 regions, but a spacer 1005 is provided. It is possible to create areas where spacer 1005 is provided and areas where spacer 1005 is not provided. Alternatively, the number of spacers 1005 can be less than the number of regions. In this way, by not providing spacers 1005 in all areas, manufacturing is made easier. And / or it becomes possible to reduce costs.

[0207] The spacer 1005 is preferably transparent, black, or white. By using black or white, brightness unevenness can be achieved depending on the presence or absence of spacer 1005. This makes it possible to reduce the occurrence of errors such as color shifts. However, this is not the case. This is just one example, and is not limited to this.

[0208] Spacer 1005 is made from materials such as acrylic, plastic, polycarbonate, and PET. It can be composed of organic matter. However, the embodiment is not limited to this. It is not determined.

[0209] The point light source 1002 may be, for example, a three-color light-emitting diode or a three-color laser. It is composed of these elements. Each light-emitting diode, or laser, emits red, blue, and green light. It has the color. And, for example, by using three colored light-emitting diodes, white can be produced. It is possible to do so. Therefore, if it can be made white, the colors will be red, blue, It is not limited to green. For example, CMYK such as cyan, magenta, and yellow can be used as point light sources. It is also possible to use it.

[0210] Thus, when brightness can be controlled for each color, local dimming can be performed more precisely. This allows for reduced power consumption or improved contrast. It becomes Noh.

[0211] Furthermore, it is preferable that the number of light-emitting diodes of each color be the same. However, the implementation form Examples of configurations are not limited to these. It is also possible to increase the number of light-emitting diodes for only a specific color. It is possible. For example, the number of green light-emitting diodes can be changed to the number of red or blue light-emitting diodes. It is possible to double this amount. In this way, the number of light-emitting diodes can be made different for each color. This makes it easier to adjust the chromaticity. Also, the lifespan of the light-emitting diode is It is also possible to reduce the variation between colors.

[0212] Furthermore, light-emitting diodes are not limited to three colors. For example, a color close to a certain color... By using light-emitting diodes (LEDs), the range of chromaticity can be broadened. For example, red, blue In addition to green, it is also possible to add a color close to green, resulting in a four-color scheme.

[0213] In addition to red, blue, and green light-emitting diodes, white light-emitting diodes can also be used. It will come. By using white light-emitting diodes, the lifespan of the light-emitting diodes can be extended. This becomes possible. Alternatively, by using white light-emitting diodes, the color change due to temperature can be reduced. It becomes possible to reduce it.

[0214] Furthermore, only white light-emitting diodes are used, and other light-emitting diodes such as red, blue, and green are not used. It is also possible to omit its use. By using only white, it prevents colors from mixing. It is possible to do this. Alternatively, by using only white, color shifts may occur due to deterioration. This makes it possible to reduce the problem.

[0215] Note that the horizontal pitch 1007 of the point light source 1002 is equal to the vertical pitch of the point light source 1002. It is preferable that it be shorter than 1006. However, the examples of embodiments are not limited to these. I can't.

[0216] Furthermore, it is preferable that the number of regions in the horizontal direction be greater than the number of regions in the vertical direction. It is appropriate. For example, in Figure 10(A), the number of vertical regions is 3, and the number of horizontal regions is It is 9.

[0217] Furthermore, the number of areas within a single screen is less than the number of light-emitting diodes of a particular color. This is preferable. In other words, having multiple point light sources for a single color in a single region. This is desirable. And, for a point light source placed in one region, a certain color It is preferable that the brightness of multiple point light sources having the same brightness be controlled simultaneously. Yes, it is preferable that the brightness be controlled for each color within a single area. If there are three red light-emitting diodes in one region, then the three light-emitting diodes When increasing brightness, all three settings increase brightness, and when decreasing brightness, all three settings decrease brightness. It is preferable to reduce the value. However, in the case of light-emitting diodes, the characteristics vary. Therefore, it is difficult to achieve perfectly identical brightness. Consequently, it is necessary to include some variation in characteristics. Therefore, it is desirable to emit light with the same brightness. For example, with a variation of about 30% It is desirable to emit light at the same brightness. In this way, multiple point light sources are arranged in one area. By placing it, it is possible to reduce brightness unevenness. Alternatively, it reduces the degradation of point light sources. It is possible to do so. However, the examples of embodiments are not limited to these.

[0218] Figure 10(B) shows an example of a part of the cross-section of Figure 10(A). On the apparatus 1001, A diffuser plate 1011 is positioned. The diffuser plate 1011 reduces brightness unevenness. The spreader plate 1011 is supported by the spacer 1005 so that it does not sag even in the center of the screen. It is being done.

[0219] A display panel 1012 is positioned on top of the diffuser plate 1011. The display panel is, for example , pixels, driving circuits, liquid crystal elements, glass substrates, thin-film transistors, polarizing plates, phase difference plates, It has a color filter and / or a prism sheet. Display panel 1012 and By coordinating and operating with the Cryte system, it becomes possible to achieve appropriate display. .

[0220] Furthermore, the diffuser plate 1011 has the function of transmitting light while diffusing it. Therefore, it is preferable that it has the function of diffusing light while having high transmittance. The transmittance of the diffuser plate 1011 is preferably higher than the transmittance of the threshold 1003. Due to the high transmittance of plate 1011, the light reflected by threshold 1003 is diffused by diffuser plate 101 It is possible to transmit light through area 1. Therefore, it reduces light leakage into other areas. This allows light to be easily emitted onto the screen. Therefore, precise control of brightness in each area is possible. This will allow for proper local dimming. However, the form of implementation... Examples of states are not limited to these.

[0221] Furthermore, the height of the threshold 1003 (1014) is higher than the height of the point light source 1002 (1013). It is preferable that the light emitted from the point light source 1002 is less likely to leak into another area. It is desirable that the threshold height 1003 is higher than the height 1014. However, this is an example of an embodiment. This is not limited to these.

[0222] Note that the distance 1015 between the threshold 1003 and the diffuser plate 1011 is equal to the height of the threshold 1003. It is preferable that the interval be shorter than 014. If the interval 1015 is too long, too much light will leak out. Therefore, it is preferable that the spacing 1015 is shorter than the height 1014 of the threshold 1003. However, the examples of embodiments are not limited to these.

[0223] Note that the distance 1015 between the threshold 1003 and the diffuser plate 1011 is equal to the height of the point light source 1002. It is preferable that it be longer than 013. If the interval 1015 is too small, the boundaries of the region will be blurred. Because it becomes too sharp, there is a possibility that the boundary will be visible on the screen. Therefore, To ensure that the boundaries of the area are not visible on the screen, the length should be such that a small amount of light leaks through. This is necessary. Therefore, the height 1014 of the threshold 1003 is set from the height 1013 of the point light source 1002. By making it longer, it becomes possible to allow an appropriate amount of light to leak out. However, the actual implementation Examples of states are not limited to these.

[0224] Furthermore, the height of threshold 1003 (1014) and the height of threshold 1004 are approximately equal. This is preferable. "Approximately equal" means that there are some differences, including manufacturing tolerances and variations. This refers to the case where they are equal, assuming that there may be other cases. For example, if the difference is around 10% or less. It is possible to have internal variations. By making the threshold heights roughly equal This makes it possible to reduce brightness unevenness because the amount of light leakage becomes uniform. However, implementation Examples of forms are not limited to these.

[0225] Note that while point light sources are placed within each region in Figure 10, this is not the only example of the embodiment. It is not fixed. It is also possible to place small area light sources in each region. Figure 11 shows each region An example of using a surface light source is shown. The process is similar to that of using a point light source. It becomes possible to configure it as follows. Therefore, the contents described in Figure 10 (even if only a part of it), Figure It is possible to apply (at least a part of it) to Figure 11.

[0226] In Figure 11(A), a surface light source 1102 is placed in each region. The surface light source 1102 is It can be achieved using various configurations.

[0227] Note that in Figure 11(A), the case where thresholds 1003 and 1004 are not provided is shown. Although shown, the examples of embodiments are not limited thereto. For example, threshold 1003, It is also possible to place only items that are arranged horizontally. Alternatively, threshold 1 It is also possible to place only elements that are arranged vertically, such as 004. Alternatively, it is possible to set both thresholds.

[0228] It is also possible to provide a spacer 1005. However, one example of this embodiment is... It is not limited to this, and it is also possible to omit the spacer 1005. The spacer 1005 is It has a function to prevent the sheet placed on top of the surface light source 1102 from sagging. However, in the case of a surface light source, the area where a cavity is created within the region is small, so spacer 10 It becomes possible to omit the 05 setting.

[0229] Furthermore, the horizontal pitch of the surface light source 1102 is greater than the vertical pitch of the surface light source 1102. Shorter is preferable. However, the examples of embodiments are not limited to these.

[0230] Furthermore, it is preferable that the height of the threshold be higher than the height of the surface light source 1102. To prevent light emitted from source 1102 from leaking into another area, the threshold height should be higher. This is desirable. However, the examples of embodiments are not limited to these.

[0231] Furthermore, when a diffuser plate is provided on the surface light source 1102, the distance between the threshold and the diffuser plate is the surface light source It is preferable that the height be longer than 1102. If the spacing is too small, the boundaries of the area will be blurred. Because it becomes too sharp, there is a possibility that the boundary will be visible on the screen. Therefore, To ensure that the boundaries of the area are not visible on the screen, the length should be such that a small amount of light leaks through. Therefore, by making the threshold longer than the height of the surface light source 1102, an appropriate amount can be obtained. This makes it possible to allow light to leak out. However, the examples of embodiments are not limited to these. stomach.

[0232] Next, as an example of a surface light source 1102, it has a light guide plate and a line light source (or a collection of point light sources) Figure 11(B) shows a cross-sectional view of a small surface light source. In Figure 11(B), 3 The diagram shows a cross-section of two surface light sources. Light enters the light guide plate 1104 from the line light source 1103. Within the light plate 1104, light propagates through repeated total internal reflection. Then, the light guide plate 110 The bottom surface 1105 of 4 is processed. Therefore, light is emitted from the surface of the light guide plate 1104. This process leads to the realization of a surface light source.

[0233] Regarding the processing of the bottom surface 1105, one example is a case where prism-shaped irregularities are formed. This may include cases where ink is printed on them, or where the density or shape of these is controlled. By doing so, a uniform surface light source can be achieved.

[0234] Furthermore, when using a surface light source as shown in Figure 11(A), a diffuser plate 10 is placed on top of the surface light source. It is possible to provide 11. This makes it possible to reduce brightness unevenness. However, when using the surface light source 1102, unlike the case of a point light source, the area is already, to some extent, Since the brightness is uniform within the unit, it is possible to omit the diffuser plate 1011.

[0235] Another example of a surface light source 1102 is the use of a flat fluorescent tube (flat cathode tube). ru.

[0236] Alternatively, as shown in Figure 11(C), the fluorescent tube (cathode tube) 1106 is bent and positioned within the region. It is also possible to realize a surface light source by creating a state similar to a flat fluorescent tube (flat cathode tube). In this case, as shown in the cross-sectional view of Figure 11(D), around the fluorescent tube (cathode tube) 1106, especially above It is also possible to place a diffuser plate 1107 on the side to make it closer to a uniform surface light source. However, the examples of embodiments are not limited to these.

[0237] (Embodiment 6) Next, another example of the display device configuration and its driving method will be described. In contrast, displays using display elements with a slow brightness response (long response time) to signal writing. Let's discuss the case of the device. In this embodiment, a liquid is used as the display element with a long response time. Although a crystal element will be used as an example, the display element in this embodiment is not limited to this, and signals Various display elements with slow brightness response to writing can be used.

[0238] In typical liquid crystal displays, the brightness response to signal writing is slow, and the liquid crystal elements receive signals. Even when voltage is continuously applied, it takes more than one frame period for the response to complete. There is a limitation in this type of display element. Even when displaying video using such elements, it is not possible to faithfully reproduce the video. Furthermore, in the case of active matrix driving, the time required to write the signal to a single liquid crystal element. Typically, the signal writing period (1 frame period or 1 subframe period) is divided by the number of scan lines. This is only a short time (the scan line selection period), and the liquid crystal element cannot respond within this brief time. This is often the case. Therefore, the majority of the response of a liquid crystal element occurs during periods when no signal is being written. This will result in the dielectric constant of the liquid crystal element changing according to the transmittance of the liquid crystal element. However, the fact that the liquid crystal element responds during periods when no signal is written means that the liquid crystal element When there is no exchange of charge with the outside (constant charge state), the dielectric constant of the liquid crystal element changes. This means that in the equation (charge) = (capacitance) * (voltage), the charge is constant. Since the capacitance changes depending on the state, the voltage applied to the liquid crystal element depends on the response of the liquid crystal element. Therefore, the voltage will change from the voltage at the time of signal writing. When driving liquid crystal elements with slow brightness response using an active matrix, the liquid crystal elements are subjected to additional The voltage applied cannot, in principle, reach the voltage used during signal writing.

[0239] The display device in this embodiment responds to the display element to a desired brightness within the signal writing period. To achieve this, the signal level during signal writing should be pre-corrected (corrected signal). This solves the above problems. Furthermore, the response time of the liquid crystal element is determined by the signal level. The larger the value, the shorter the response time, so by writing a correction signal, the response time of the liquid crystal element can be shortened. It is also possible to do this. This method of adding a correction signal is also called overdrive. In this embodiment, the overdrive is performed when the signal writing period is input to the display device. Even if the period of the image signal being written is shorter than the period of the input image signal (input image signal period Tin), the signal writing The signal level is corrected according to the period, allowing the display element to shine as desired within the signal writing period. It can respond down to a certain degree. The signal writing period is shorter than the input image signal period Tin. For example, when a single original image is divided into multiple sub-images, and these multiple sub-images are then processed into a single file. One example is displaying them sequentially within the frame period.

[0240] Next, in an active-matrix driven display device, the signal level during signal writing is corrected. An example of the method is explained with reference to Figures 12(A) and (B). Figure 12(A) is The horizontal axis represents time, and the vertical axis represents the signal level at the time of signal writing, and the signal at a certain display element This graph schematically represents the time change in the brightness of the signal level during writing. Figure 12(B) The horizontal axis represents time, and the vertical axis represents the display level, and the time change of the display level in a given display element is plotted. This graph schematically represents the transformation. Note that if the display element is a liquid crystal element, the signal writing process is as follows. The signal level can be defined as voltage, and the display level as the transmittance of the liquid crystal element. (See Figure below) The vertical axis in Figure 12(A) represents voltage, and the vertical axis in Figure 12(B) represents transmittance. In this embodiment, overdrive is defined as a signal level other than voltage (duty cycle, current). This also includes cases where the display level is This also includes cases other than transmittance (such as brightness and current). Note that when the voltage is 0 for a liquid crystal element... There are normally black types that display black (e.g., VA mode, IPS mode, etc.) and types where the voltage is 0 There are normally white types (e.g., TN mode, OCB mode, etc.) that display white when this is the case. However, the graph shown in Figure 12(B) corresponds to both, and in the case of a normally Black type... In the case of a normal white type, the higher you go on the graph, the greater the transmittance, and in the case of a normal white type, The transparency should be such that it increases as you go down the rough. In other words, in this embodiment The LCD mode can be either normally black or normally white. Oh, the timeline shows the signal writing timing with a dotted line, and it shows the time from when the signal was written until... The period until the next signal write is performed will be called the retention period Fi. In this case, i is an integer and represents an index that indicates the retention period. Figure 1 In 2(A) and (B), i is shown as ranging from 0 to 2, but i can be anything other than this. It can also take integer values ​​(values ​​other than 0 to 2 are not shown). Note that in the retention period Fi... The transmittance Ti is set to achieve the brightness corresponding to the image signal, and in the steady state, the transmittance Ti is Let Vi be the applied voltage. Note that the dashed line 5101 in Figure 12(A) represents the overdrive. This graph shows the time change of the voltage applied to the liquid crystal element when this is not performed, and the solid line 5102 represents this embodiment. This shows the time variation of the voltage applied to the liquid crystal element when overdrive is performed. Similarly, the dashed line 5103 in Figure 12(B) represents the liquid crystal element when overdrive is not performed. This graph shows the change in transmittance over time, and the solid line 5104 represents the overdrive in this embodiment. This shows the change in transmittance of the liquid crystal element over time when the procedure is performed. Note that the retention period Fi is at the end of the expression. The difference between the desired transmittance Ti and the actual transmittance will be denoted as the error αi.

[0241] In the graph shown in Figure 12(A), the dashed line 5101 and the solid line 51 during the retention period F0. Both 0 and 2 have the desired voltage V0 applied, and as shown in the graph in Figure 12(B), the breakdown Assume that the desired transmittance T0 is obtained for both line 5103 and solid line 5104. If overdrive does not occur, as shown by the dashed line 5101, at the beginning of the holding period F1 The desired voltage V1 is applied to the liquid crystal element, but as already mentioned, the period when the signal is written The interval is extremely short compared to the retention period, and for most of the retention period, the state is constant charge. During the retention period, the voltage applied to the liquid crystal element changes along with the change in transmittance, and the retention period At the end of interval F1, the voltage becomes significantly different from the desired voltage V1. Furthermore, the dashed line 5103 in the graph shown in Figure 12(B) also differs significantly from the desired transmittance T1. This results in a lower image quality because the image signal cannot be displayed faithfully. It is lowered. On the other hand, when overdrive is performed in this embodiment, solid line 51 As shown in 02, at the beginning of the holding period F1, a voltage V1 greater than the desired voltage V1 is obtained. This ensures that the liquid crystal element is gradually supplied with the liquid crystal element during the holding period F1. Anticipating that the voltage will change, the voltage applied to the liquid crystal element at the end of the holding period F1 At the beginning of the holding period F1, the desired voltage V is set so that the voltage is near the desired voltage V1. By applying the corrected voltage V1' from 1 to the liquid crystal element, the desired voltage V1 is precisely applied to the liquid crystal element. It becomes possible to apply to the child. At this time, the solid line 510 in the graph shown in Figure 12(B) As shown in 4, the desired transmittance T1 is obtained at the end of the retention period F1. That is, Despite remaining in a constant charge state for most of the holding period, within the signal writing cycle... This enables the response of the liquid crystal element. Next, during the holding period F2, the desired voltage V2 is V1 This shows the case where it is smaller than, but in this case as well, the retention period F2 is the same as the retention period F1. Anticipating that the voltage applied to the liquid crystal element will gradually change, at the end of the holding period F2 The voltage applied to the liquid crystal element is set to a voltage near the desired voltage V2 at the beginning of the holding period F2. In this case, a voltage F2' corrected from the desired voltage V2 is applied to the liquid crystal element. As a result, as shown by the solid line 5104 in the graph in Figure 12(B), the retention period F2 The desired transmittance T2 is obtained at the end. Note that, as with the retention period F1, Vi is Vi- If it is greater than 1, the corrected voltage Vi' will be greater than the desired voltage Vi. It is preferable that it be corrected in this way. Furthermore, as in the retention period F2, Vi is compared to Vi-1. If all values ​​decrease, the corrected voltage Vi' should be smaller than the desired voltage Vi. It is preferable that correction be applied. The specific correction value should be determined in advance based on the response characteristics of the liquid crystal element. This can be derived by measuring [something]. As a method for implementing this in the device, the correction formula is formulated... The method involves incorporating this into a logic circuit and saving the correction value in memory as a lookup table. Furthermore, methods for reading correction values ​​as needed can be used.

[0242] Furthermore, if the overdrive in this embodiment were to be actually implemented as a device, However, various constraints exist. For example, voltage correction must be within the rated voltage range of the source driver. It must be done. That is, the desired voltage is originally a large value, and ideal correction If the voltage exceeds the rated voltage of the source driver, the correction will not be sufficient. The problems in such cases will be explained with reference to Figures 12(C) and (D). Figure 12 (C) is similar to Figure 12(A), with the horizontal axis representing time and the vertical axis representing voltage, and applies to a single liquid crystal element. This graph schematically represents the time variation of voltage in the given location, with the solid line 5105 being the most accurate representation. Figure 12(D) Similar to Figure 12(B), the horizontal axis represents time and the vertical axis represents transmittance, and in a certain liquid crystal element... This graph schematically represents the change in transmittance over time, shown as the solid line 5106. The notation method is the same as in Figures 12(A) and (B), so the explanation is omitted. Figure 1 2(C) and (D) are corrections to achieve the desired transmittance T1 during the retention period F1. Since the voltage V1' exceeds the rated voltage of the source driver, we have no choice but to set V1' = V1. This indicates that the data has been lost and sufficient correction is not possible. At this time, the end of the retention period F1 is The resulting transmittance will be a value that deviates from the desired transmittance T1 by an error α1. The difference α1 becomes large only when the desired voltage is originally a large value, therefore the error α The image quality degradation caused by the occurrence of 1 is often within an acceptable range. However, the error α1 As the value increases, the error within the voltage correction algorithm also increases. Furthermore, in the voltage correction algorithm, if the desired transmittance is obtained at the end of the holding period, If we assume that the error α1 is actually large, then the error α1 is small. Therefore, in order to correct the voltage, an error will be included in the correction during the next holding period F2. As a result, the error α2 also becomes larger. Furthermore, if the error α2 becomes larger... Then, the next error α3 becomes even larger, and so on, the errors grow in a chain reaction. This results in a significant decrease in image quality. In BirdDrive, the goal is to suppress this chain reaction of increasing errors. Therefore, when the correction voltage Vi' exceeds the rated voltage of the source driver during the holding period Fi, The error αi at the end of the retention period Fi is estimated, and the magnitude of this error αi is taken into consideration when determining retention. The correction voltage during period Fi+1 can be adjusted. This increases the error αi. Even if it does, the impact on the error αi+1 can be minimized, so the error is This can prevent the chain reaction from becoming larger. Overdrive in this embodiment For an example of minimizing the error α2, please refer to Figures 12(E) and (F). To clarify, the graph shown in Figure 12(E) shows the correction voltage V2' of the graph shown in Figure 12(C). The time variation of the voltage when further adjusted and the corrected voltage V2'' is represented as the solid line 5107. The graph shown in Figure 12(F) shows that the voltage correction is performed according to the graph shown in Figure 12(E). This shows the change in transmittance over time when the process is performed. The solid line in the graph shown in Figure 12(D) In the 5106, overcorrection occurs due to the correction voltage V2', as shown in Figure 12(F). In the graph, the solid line 5108 is due to the correction voltage V2'' adjusted to account for the error α1. This suppresses overcorrection and minimizes the error α2. Regarding the specific correction values... This can be derived by pre-measuring the response characteristics of the liquid crystal element. Method of implementation in the device. Methods include formulating a correction formula and incorporating it into the logic circuit, and using a lookup table for the correction value. Methods such as storing the values ​​in memory and reading the correction values ​​as needed can be used. And these methods are added separately from the part that calculates the correction voltage Vi', This can be incorporated into the part that calculates the corrected voltage Vi'. Note that the error αi-1 is taken into consideration. The correction amount of the adjusted correction voltage Vi'' (the difference from the desired voltage Vi) is equal to the correction amount of Vi''. It is preferable that the size be smaller. That is, |Vi´´-Vi|<|Vi´-Vi| It is preferable to do so.

[0243] Note that error α occurs when the ideal correction voltage exceeds the rated voltage of the source driver. i increases as the signal writing period shortens. This is because the liquid decreases as the signal writing period shortens. The response time of the crystal element also needs to be shortened, and as a result, a larger correction voltage is required. Furthermore, as a result of the increased required correction voltage, the correction voltage becomes more difficult to obtain. The frequency of exceeding the rated voltage of the battery also increases, which means that the frequency of large errors αi also increases. Therefore, the overdrive in this embodiment has a short signal writing period. It can be said that this is effective in the less common cases. Specifically, one original image is divided into multiple sub-images, When displaying multiple sub-images sequentially within a single frame period, the images included in the image are selected from the multiple images. The system detects the motion and generates an intermediate state image between the multiple images, and between the multiple images When inserting and driving (so-called motion-compensated double-speed drive), or when combining these, When a drive method such as the above is performed, the overdrive in this embodiment is used. Doing so will have a remarkable effect.

[0244] In addition to the upper limit mentioned above, the rated voltage of the source driver also has a lower limit. For example, One example is when a voltage less than 0 cannot be applied. In this case, the upper limit mentioned above applies. Similar to the case of the combined form, an ideal correction voltage cannot be applied, so the error αi becomes larger. However, even in this case, as with the method described above, at the end of the retention period Fi We estimate the error αi and, taking into account the magnitude of this error αi, we compensate for the error during the retention period Fi+1. The positive voltage can be adjusted. Note that the rated voltage of the source driver should be less than 0. If it is possible to apply a negative voltage, a negative voltage is applied to the liquid crystal element as a correction voltage. You may also add this. By doing so, you can anticipate the potential fluctuations due to the constant charge state and set the holding period F. At the end of i, the voltage applied to the liquid crystal element is adjusted to be close to the desired voltage Vi. Cut.

[0245] Furthermore, in order to suppress the degradation of the liquid crystal elements, the polarity of the voltage applied to the liquid crystal elements is periodically reversed. This allows for the implementation of what is known as reverse drive, in combination with overdrive. In other words, the overdrive in this embodiment may be performed simultaneously with the reversal drive. Includes. For example, if the signal writing period is 1 / 2 of the input image signal period Tin, the polarity is If the inversion period and the input image signal period Tin are approximately the same, then writing a positive polarity signal and The writing of negative polarity signals will alternate every two times. In this way, the polarity is reversed. By making the rotation period longer than the signal writing period, the frequency of pixel charging and discharging can be reduced. Therefore, power consumption can be reduced. However, if the period for reversing the polarity is made too long, the polarity Because differences in brightness due to polarity can sometimes be perceived as flicker, a malfunction may occur. The inversion period is preferably about the same as or shorter than the input image signal period Tin.

[0246] (Embodiment 7) Next, another example of the display device configuration and its driving method will be described. In this case, multiple images are used to interpolate the movement of an image (input image) that is input from outside the display device. Based on the input image, the display device generates an image (generated image) and input This section explains how to sequentially display force images. Note that the generated images will reflect the movement of the input images. By using interpolated images, the motion of the video can be made smoother, and furthermore, This can improve the problem of video quality degrading due to afterimages caused by motion blur. Interpolation is explained below. Ideally, video display should realistically reproduce the brightness of individual pixels. This is achieved by controlling the timing, but real-time individual control of pixels is controlled The problems include the enormous number of circuits, the lack of wiring space, and the massive amount of data in the input images. There are significant problems and other issues that make implementation difficult. Therefore, video on a display device The display makes the image appear as a video by sequentially displaying multiple still images at regular intervals. This is done. This period (in this embodiment, it is called the input image signal period, Tin (represented as) is standardized, for example, 1 / 60 second in the NTSC standard and in the PAL standard It is 1 / 50th of a second. Even with a period of this magnitude, in a CRT, which is an impulse-type display device... No problems occurred with video display. However, in hold-type display devices, these regulations When displaying videos that conform to the specifications, afterimages and other issues caused by the hold-type display may occur. A problem occurs where the display becomes unclear (hold blur). Ludder blur is a discrepancy between the interpolation of unconscious movements due to human eye tracking and the hold-type display. Since it is recognized as discrepancy, the input image is different from conventional standards. This can be reduced by shortening the signal period (approaching real-time individual control of pixels). It is possible, but shortening the input image signal period would require changes to the standard and would also increase the amount of data. This will be a major undertaking, and therefore difficult. However, based on a standardized input image signal... The display device generates an image that interpolates the motion of the input image, and then uses this generated image. By interpolating and displaying the input image, without changing the standard or increasing the amount of data, This reduces blurring. In this way, the display device generates an image signal based on the input image signal. The process of interpolating the motion of an input image will be referred to as video interpolation.

[0247] The video interpolation method in this embodiment can reduce video blur. The video interpolation method in this embodiment can be divided into an image generation method and an image display method. And for specific patterns of movement, a different image generation method and / or image table By using the method shown, motion blur in videos can be effectively reduced. Figure 13(A) (B) is a schematic diagram illustrating an example of the video interpolation method in this embodiment. In Figures 13(A) and (B), the horizontal axis represents time, and the horizontal position is determined by the horizontal position. This indicates when each image is processed. The section labeled "Input" indicates the input image signal. This indicates the timing at which the number is entered. Here, it is treated as two images that are adjacent in time. We are focusing on images 5121 and 5122. The input images are entered at intervals of period Tin. It is applied. Note that the length of one period Tin is referred to as one frame or one frame period. Sometimes, the part marked "Generate" is the type where a new image is generated from the input image signal. This represents the ming. Here, it is generated based on images 5121 and 5122. We are focusing on the generated image, image 5123. The part labeled "Display" is on the display device. This indicates when the image will be displayed. Note that this also applies to images other than the one being focused on. Although it is only indicated by a dashed line, by treating it in the same way as the image of interest, this implementation This allows us to implement one example of a video interpolation method in this format.

[0248] An example of the video interpolation method in this embodiment is shown in Figure 13(A), where time The generated image is created based on two adjacent input images, and the two input images are displayed in a way that the two input images are displayed in By displaying it in the gaps at the indicated timings, video interpolation can be performed. It is preferable that the display period of the displayed image be half the input period of the input image. Furthermore, it is not limited to this, and various display periods can be used. For example, the display period can be set to the input period. By shortening the display period to less than half, the video can be displayed more smoothly. Alternatively, the display cycle can be changed. By making the period longer than half the force cycle, power consumption can be reduced. The image is generated based on two adjacent input images, but the number of input images used is limited to two. It is not fixed and various numbers can be used. For example, three (or more) time-adjacent objects. If you generate an image based on an input image (which is also good), it will be more efficient than if you use two input images. This allows for the generation of highly accurate images. Furthermore, the display timing of image 5121 is controlled by the image. The same time as the input timing of image 5122, i.e., the display timing relative to the input timing. Although this is set to a 1-frame delay, the display time in the video interpolation method in this embodiment The timing is not limited to this, and various display timings can be used. For example, input The display timing can be delayed by one frame or more relative to the timing. Therefore, the display timing of the generated image, image 5123, can be delayed, This allows for more time to be allocated for the production of 5123, reducing power consumption and manufacturing costs. This leads to a reduction. However, if the display timing is too late relative to the input timing, The longer the period for which the input image is retained, the greater the memory capacity required for retention. The display timing relative to the input timing is approximately 1 to 2 frames behind. preferable.

[0249] Here, the specifics of image 5123, which is generated based on images 5121 and 5122 An example of a typical generation method will be explained. In order to interpolate a video, the motion of the input image is detected. It is necessary to do so, but in this embodiment, in order to detect the motion of the input image, block markings are used. A method called the "sniffing method" can be used. However, it is not limited to this, and various methods can be used. Methods (such as methods that involve taking the difference between image data, or methods that utilize the Fourier transform) can be used. In block matching, first, the image data of one input image (here, image) Image data of image 5121 is stored in a data storage means (semiconductor memory, RAM, or other memory circuit). It stores the image in the next frame (in this case, image 5122) in multiple Divide the area into regions. Note that the divided regions will be rectangles of the same shape, as shown in Figure 13(A). It is possible, but not limited to, various things (the shape or size can be changed depending on the image) (e.g., ) After that, each divided area is stored in the data storage means. The data is compared with the image data of the previous frame (in this case, the image data of image 5121). Next, search for regions where the image data is similar. In the example in Figure 13(A), image 5122 Search within image 5121 for regions similar to region 5124 and data, and select region 51 26 is considered to have been searched. Note that when searching within image 5121, the search range is It is preferable that it be limited. In the example in Figure 13(A), the search range is region 512. A region of 5125, approximately four times the size of area 4, has been set. Note that the search range is... By making it larger, detection accuracy can be improved even in fast-moving videos. However, if the search is too broad, the search time becomes enormous, and motion detection becomes difficult. Because achieving this would be difficult, region 5125 is about 2 to 6 times the area of ​​region 5124. It is preferable that it be small. Subsequently, the explored region 5126 and in image 5122 The difference in position from region 5124 is calculated as motion vector 5127. Motion vector 51 27 represents the movement of image data in region 5124 over one frame period. Therefore, in order to generate an image that represents the intermediate state of motion, the direction of the motion vector remains the same, but the size is changed. A modified image generation vector 5128 is created, and the region 5126 in image 5121 is included By moving the generated image data according to the image generation vector 5128, image 512 Image data within region 5129 in 3 is formed. These series of processes are shown in image 51 By performing this operation on all regions in 22, image 5123 is generated. Then, image By sequentially displaying images 5121, 5123, and 5122, the video can be interpolated. It is possible. Furthermore, the position of object 5130 in the image is the same in image 5121 and image 5122. Although different (i.e., moving), the generated image 5123 is the same as image 5121 and This is the midpoint of the object in image 5122. By displaying such an image, It can smooth out image movement and improve the clarity of videos caused by afterimages and other issues.

[0250] Note that the size of the image generation vector 5128 is determined according to the display timing of image 5123. It can be determined by the display timing of image 5123. The value is set as the midpoint (1 / 2) of the display timing between image 5121 and image 5122. However, the size of the image generation vector 5128 is set to 1 / 2 of the motion vector 5127. In addition, for example, if the display timing is at 1 / 3, the size will be set to 1 / 3 and the display will be set to 1 / 3. If the timing is 2 / 3, the size can be set to 2 / 3.

[0251] Furthermore, by moving multiple regions with various motion vectors in this way, a new When creating an image, there may be overlaps (duplicates) within the destination area where other areas have already been moved, or where There may also be areas (blank spaces) that are not moved from this region. This allows for data correction. For example, methods for correcting duplicate data include... Prioritize the methods for averaging, the direction of the motion vector, etc., and then process the data with the highest priority. The method for using data within the generated image, prioritizing either color (or brightness), but brightness ( Alternatively, methods such as taking the average (or color) can be used. As for methods to correct for blank areas, The image data at the corresponding position in image 5121 or image 5122 is used as is within the generated image Method for obtaining data, the average of image data at the relevant position in image 5121 or image 5122 Methods such as averaging can be used. Then, the generated image 5123 is used for image generation. By displaying the vector 5128 at a timing that matches its magnitude, the movement of the video becomes smoother. Furthermore, video quality can be reduced due to afterimages caused by hold-and-drive. The problem can be improved.

[0252] Another example of the video interpolation method in this embodiment is shown in Figure 13(B), which involves time The generated image is based on two inter-adjacent input images, and the two input images are When displaying images in the gaps between displays, each display image can be further sub-images. By dividing and displaying the image, video interpolation can be performed. In this case, the image display period In addition to the advantages of a shorter duration, dark images are displayed periodically (the display method is Advantages can also be obtained by moving closer to a pulse type. In other words, the image display period is This method, which reduces video blurring due to afterimages, is more effective than simply making the input cycle half the length. Further improvements are possible. In the example in Figure 13(B), "Input" and "Generation" are shown in Figure The same process as in example 13(A) can be performed, so the explanation is omitted. Figure 13(B) In the example, "display" means dividing one input image or / or a generated image into multiple sub-images. It is possible to divide and display the image. Specifically, as shown in Figure 13(B), image 5121 By dividing the image into sub-images 5121a and 5121b and displaying them sequentially, the image appears to the human eye as if it were a picture. Image 5121 is perceived as being displayed, and image 5123 is shown as sub-images 5123a and 51 By dividing it into 23b and displaying them sequentially, the human eye perceives it as if image 5123 has been displayed. The system will then split image 5122 into sub-images 5122a and 5122b and display them sequentially. This causes the human eye to perceive that image 5122 is displayed. The perceived image is similar to the example in Figure 13(A), but the display method is impulse Because it can be made closer to the original form, the blurriness of videos caused by afterimages and other issues can be further improved. In Figure 13(B), the number of sub-image divisions is set to 2, but this is not limited to this. Various division numbers can be used. Note that the timing of when the sub-images are displayed is shown in Figure 13. In B), the intervals are set to equal intervals (1 / 2), but this is not limited to this, and various display timings are possible. This can be used. For example, dark sub-images (5121b, 5122b, 5123b) By making the display timing earlier (specifically, from 1 / 4 to 1 / 2 of the timing), the table This allows the display method to be closer to an impulse type, thus reducing the blurriness of videos caused by afterimages, etc. Further improvements are possible. Alternatively, the display timing of dark sub-images can be delayed (specifically, 1 By doing this (from 2 to 3 / 4 of the time), the display period for bright images can be extended. This improves display efficiency and reduces power consumption.

[0253] Another example of the video interpolation method in this embodiment is detecting the shape of an object moving in the image. This is an example of performing different processing depending on the shape of a moving object. See Figure 13(C) for an example. This indicates the timing of the display, similar to the example in Figure 13(B), but the displayed content is This indicates that the text is moving (also known as scrolling text, subtitles, captions, etc.). It is. Furthermore, the "input" and "generation" can be the same as in Figure 13(B). (Not illustrated.) The blurriness of the video in hold mode is due to the nature of the moving object. The degree of this can vary. It's especially noticeable when the text is moving. Yes. Because when reading moving text, you inevitably follow the text with your eyes. This is because hold blur is more likely to occur. Furthermore, the outlines of the text are clear. Because there are many of these, the blurring caused by hold blur can be further emphasized. This involves determining whether a moving object within the image is text, and if it is text, performing further special processing. Doing so is effective in reducing hold blur. Specifically, moving within the image Contour detection and / or pattern detection are performed on the object to determine if the object is a character. If it is determined that motion interpolation is being performed, motion interpolation will be performed even between sub-images that were divided from the same image. The movement can be made smoother by displaying intermediate states of the movement. If it is determined that it is not text, it will be divided from the same image as shown in Figure 13(B). Sub-images allow for the display of moving objects without changing their position. Figure 13(C) This example shows the case where region 5131, which was determined to be a character, is moving upwards. However, the position of region 5131 is different in image 5121a and image 5121b. The same applies to image 5123a and image 5123b, and to image 5122a and image 5122b. By doing this, for moving text where hold blur is particularly easily recognized, the normal movement will be maintained. It can make motion even smoother than compensated motion interpolation, so motion blur and other issues in videos are reduced. The clarity can be further improved.

[0254] (Embodiment 8) In this embodiment, the pixel configuration and pixel operation applicable to the liquid crystal display device are as follows: This will be explained. Note that the operating mode of the liquid crystal element in this embodiment is TN(Twis (Ted Nematic) mode, IPS (In-Plane-Switching) mode Code, FFS (Fringe Field Switching) mode, MVA (Mu lti-domain Vertical Alignment) mode, PVA(Pa (Vertical Alignment) mode, ASM (Axial (Symmetric aligned Micro-cell) mode, OCB ( Optically Compensated Birefringence mode, FLC (Ferroelectric Liquid Crystal) mode, AFL Using C (AntiFerroelectric Liquid Crystal), etc. It is possible.

[0255] Figure 14(A) shows an example of a pixel configuration applicable to a liquid crystal display device. Pixel 50 80 includes a transistor 5081, a liquid crystal element 5082, and a capacitive element 5083. The gate of transistor 5081 is electrically connected to wiring 5085. Transistor 50 The first terminal of 81 is electrically connected to wiring 5084. The second terminal of transistor 5081 It is electrically connected to the first terminal of the liquid crystal element 5082. The second terminal of the liquid crystal element 5082 is It is electrically connected to wire 5087. The first terminal of capacitive element 5083 is connected to the first terminal of liquid crystal element 5082. It is electrically connected to terminal 1. The second terminal of the capacitive element 5083 is electrically connected to wiring 5086. It continues. Note that the first terminal of a transistor is either the source or the drain. Yes, the second terminal of a transistor is the other side of the source or drain. If the first terminal of the transistor is the source, then the second terminal of the transistor is the drain. Similarly, if the first terminal of the transistor is the drain, then the second terminal of the transistor The child will be the source.

[0256] Wiring 5084 can function as a signal line. The signal line is an input from outside the pixel. This is wiring for transmitting the signal voltage to pixel 5080. Wiring 5085 is a scan line. It can be made to function. The scan line controls the on / off state of transistor 5081. This is the wiring. Wiring 5086 can function as a capacitance line. A capacitance line is a capacitance element This is wiring for applying a predetermined voltage to the second terminal of child 5083. Transistor 5081 is It can function as a switch. The capacitive element 5083 functions as a holding capacitor. It can be done. The retention capacity is such that even when the switch is off, the signal voltage is detected by the liquid crystal element. This is a capacitive element that ensures a continuous current is applied to 5082. Wiring 5087 is connected to the counter electrode and This allows it to function. The counter electrode applies a predetermined voltage to the second terminal of the liquid crystal element 5082. These are wires for adding connections. However, the functions that each wire can perform are not limited to these. It can have various functions. For example, it can change the voltage applied to the capacitance line. Furthermore, the voltage applied to the liquid crystal element can also be adjusted. Note that the transistor 5081 is Since it only needs to function as a switch, the polarity of the transistor 5081 can be P-channel type. Yes, an N-channel type would also be fine.

[0257] Figure 14(B) shows an example of a pixel configuration that can be applied to a liquid crystal display device. The pixel configuration example shown in B) is different from the pixel configuration example shown in Figure 14(A) in that wiring 5087 is omitted. It is abbreviated, and the second terminal of the liquid crystal element 5082 and the second terminal of the capacitive element 5083 are electrically connected. Except for the difference in the points of connection, the configuration is similar to the pixel configuration example shown in Figure 14(A). It is stated that there is. The example pixel configuration shown in Figure 14(B) is particularly in which the liquid crystal element is in the transverse electric field mode (I This applies when the liquid crystal elements are horizontal (including PS mode and FFS mode). In electric field mode, the second terminal of liquid crystal element 5082 and the second terminal of capacitive element 5083 Since the second terminal of the liquid crystal element 5082 and the capacitive element can be formed on the same substrate, This is because it is easy to electrically connect it to the second terminal of the 5083. Figure 14(B) By using the pixel configuration shown, the wiring 5087 can be omitted, thus simplifying the manufacturing process. This allows for a reduction in manufacturing costs.

[0258] The pixel configuration shown in Figure 14(A) or Figure 14(B) is arranged in a matrix. This allows for the formation of the display unit of a liquid crystal display device, which then displays various images. This is possible. Figure 14(C) shows multiple pixel configurations arranged in a matrix, as shown in Figure 14(A). This is a diagram showing the circuit configuration when this is the case. The circuit configuration shown in Figure 14(C) has a display unit. This is a diagram showing four pixels extracted from multiple pixels. And, column i, row j (i Pixels located at (where j is a natural number) are denoted as pixels 5080_i,j, and pixels 5080_i, In j, wiring 5084_i, wiring 5085_j, and wiring 5086_j are electrically connected. They are connected. Similarly, for pixels 5080_i+1,j, wiring 5084_i+1, Line 5085_j is electrically connected to wiring 5086_j. Similarly, pixel 5080_i, For j+1, we have wiring 5084_i, wiring 5085_j+1, and wiring 5086_j+1. Electrically connected. Similarly, for pixels 5080_i+1,j+1, wiring 5084 _i+1 is electrically connected to wiring 5085_j+1 and wiring 5086_j+1. Each wiring can be shared by multiple pixels belonging to the same column or row. In the pixel configuration shown in Figure 14(C), wiring 5087 is a counter electrode, and all counter electrodes Since it is common to all pixels, wiring 5087 is represented by a natural number i or j. This will not be done. Note that in one example of the embodiment, the pixel configuration shown in Figure 14(B) is... Since it is also possible to use wiring 5087, even in the configuration where wiring 5087 is described, wiring 50 87 is not mandatory and can be omitted if it is shared with other wiring, etc.

[0259] The pixel configuration shown in Figure 14(C) can be driven by various methods. In particular, Driven by a method called AC drive, the liquid crystal elements degrade (burn-in). This can be suppressed. Figure 14(D) shows a dot inversion drive, which is one type of AC drive. In the case of this, the timing of the voltage applied to each wiring in the pixel configuration shown in Figure 14(C) This is a diagram representing a chart. By performing dot inversion driving, AC driving is performed. It can suppress the flicker (flickering) that is visible when the image is broken.

[0260] In the pixel configuration shown in Figure 14(C), the wire 5085_j is electrically connected to the pixel In the basics, a switch is in the selected state (on) during the jth gate selection period within a 1-frame period. It enters the selected state, and during other periods it is in the unselected state (off state). Then, the jth gate. After the selection period, a selection period for the (j+1)th gate is provided. The scanning is performed sequentially in this manner. As a result, all pixels are selected sequentially within a single frame period. This is shown in Figure 14(D). In the timing chart, when the voltage is high (high level), the pixel in question... When the switch is selected, the voltage becomes low (low level), which is the deselected state. Yes. Note that this is the case when the transistor in each pixel is of the N-channel type, and P-channel type When a single-channel transistor is used, the relationship between voltage and selected state is different from that of an N-channel transistor. The opposite is true.

[0261] In the timing chart shown in Figure 14(D), the kth frame (where k is a natural number) During the J-gate selection period, a positive signal voltage is applied to the wiring 5084_i used as the signal line. Then, a negative signal voltage is applied to the wiring 5084_i+1. And in the kth frame, During the j+1 gate selection period, a negative signal voltage is applied to wiring 5084_i, and wiring A positive signal voltage is applied to 5084_i+1. After that, each signal line is connected to the gate. A signal with reversed polarity is applied alternately at each selected period. As a result, in the kth frame... Therefore, pixels 5080_i,j receive a positive signal voltage, and pixels 5080_i+1,j receive a negative signal. Voltage, pixel 5080_i,j+1 has a negative signal voltage, pixel 5080_i+1,j+1 has A positive signal voltage will be applied to each. Then, in the k+1th frame... In each pixel, the signal voltage is of the opposite polarity to the signal voltage written in the k-th frame. The signal voltage is written. As a result, in the k+1th frame, pixel 5080_i, j is a negative signal voltage, pixel 5080_i+1, j is a positive signal voltage, pixel 5080_i, A positive signal voltage is applied to j+1, and a negative signal voltage is applied to pixel 5080_i+1,j+1, respectively. This will result in different values ​​being added to adjacent pixels within the same frame. A polarity signal voltage is applied, and furthermore, for each pixel, the signal voltage is applied every frame. A driving method in which the polarity of the pressure is reversed is called dot reversal driving. With dot reversal driving, the liquid While suppressing the degradation of the crystal element, the displayed image is visible when the entire image or a portion of it is uniform. This can reduce flicker. Note that wiring 5086_j and wiring 5086_j+1 The voltage applied to all wiring 5086, including the wiring itself, can be set to a constant voltage. The timing chart for wiring 5084 only shows the polarity of the signal voltage, In reality, the signal voltage can take on various values ​​depending on the polarity indicated. Note that here, 1 dot... We have described the case where the polarity is reversed for each pixel, but this is not the only case. It is also possible to reverse the polarity for each element. For example, the signal voltage written every two gate selection periods. By reversing the polarity, the power consumption required for writing the signal voltage can be reduced. It is possible. In addition, it is also possible to reverse the polarity of each column (source line inversion), and one row at a time. It is also possible to reverse the polarity (gate line inversion).

[0262] Furthermore, the second terminal of the capacitive element 5083 in pixel 5080 is connected to the first terminal during the frame period. It is sufficient that a constant voltage is applied. Here, in addition to the wiring 5085 used as the scan line... The applied voltage is low for most of the frame duration, and a nearly constant voltage is applied. Therefore, the connection destination of the second terminal of the capacitive element 5083 in pixel 5080 is the wiring. 5085 is also acceptable. Figure 14(E) shows an example of a pixel configuration that can be applied to a liquid crystal display device. The pixel configuration shown in Figure 14(E) is, compared to the pixel configuration shown in Figure 14(C), Line 5086 is omitted, and the second terminal of the capacitive element 5083 in pixel 5080 and the one before it It is characterized by the fact that the wiring 5085 in the row is electrically connected. Specifically In the range shown in Figure 14(E), pixels 5080_i,j+1 and The second terminal of the capacitive element 5083 in element 5080_i+1,j+1 is connected to wiring 5085_j And it is electrically connected. In this way, the second terminal of the capacitive element 5083 in the pixel 5080 and By electrically connecting it to wiring 5085 in the previous line, wiring 5086 can be omitted. This allows for an improvement in the aperture ratio of the pixels. Furthermore, the second terminal of the capacitive element 5083 The connection destination is not necessarily wiring 5085 in the previous line, but rather wiring 5085 in another line. Good. Note that the driving method for the pixel configuration shown in Figure 14(E) is the same as the driving method for the pixel configuration shown in Figure 14(C). The same method as the drive method can be used.

[0263] Note that the capacitive element 5083 and the wiring electrically connected to the second terminal of the capacitive element 5083 This allows us to reduce the voltage applied to wiring 5084, which is used as a signal line. The pixel configuration and driving method in this case are explained using Figures 14(F) and 14(G). To clarify, the pixel configuration shown in Figure 14(F) is different from the pixel configuration shown in Figure 14(A) in terms of wiring. Two 5086 elements are used per pixel row, and the number of capacitive elements 5083 in pixel 5080 It is characterized by the alternating electrical connection with the two terminals at adjacent pixels. The original wiring 5086 will be referred to as wiring 5086-1 and wiring 5086-2, respectively. Specifically, in the range shown in Figure 14(F), pixel 5080_i The second terminal of the capacitive element 5083 at j is electrically connected to the wiring 5086-1_j. The second terminal of the capacitive element 5083 in pixels 5080_i+1,j is connected to wiring 5086-2 Electrically connected to _j, the second end of the capacitive element 5083 at pixel 5080_i,j+1 The child is electrically connected to wiring 5086-2_j+1 and to pixels 5080_i+1,j+1. The second terminal of the capacitive element 5083 is electrically connected to the wiring 5086-1_j+1. .

[0264] For example, as shown in Figure 14(G), in the k-th frame, pixel 5080_i If a positive polarity signal voltage is written to j, the wiring 5086-1_j is selected for the j gate. During the selection period, it will be kept at a low level, and after the end of the selection period for the jth gate, it will change to a high level. Then, maintain the high level for the duration of 1 frame, and in the k+1 frame... After a negative polarity signal voltage is written during the j-th gate selection period, it is changed to a low level. Thus, after a positive polarity signal voltage is written to the pixel, the capacitance element 5083 By changing the voltage of the wiring electrically connected to the two terminals in the positive direction, in addition to the liquid crystal element, The voltage applied can be changed by a predetermined amount in the positive direction. That is, the pixel This allows for a reduction in the signal voltage being written, thereby reducing the power consumption required for signal writing. This can be done. Furthermore, if a negative polarity signal voltage is written during the j-th gate selection period... In this case, after a negative polarity signal voltage is written to the pixel, the second terminal of the capacitive element 5083 is charged. By changing the voltage of the electrically connected wiring in the negative direction, the voltage applied to the liquid crystal element is changed. Since it can be changed by a predetermined amount in the negative direction, the pixel can be changed in the same way as in the case of positive polarity. The signal voltage written to it can be reduced. In other words, the second terminal of the capacitive element 5083 Electrically connected wiring, in the same row of the same frame, is subjected to a positive polarity signal voltage. The pixels that are subjected to a signal voltage and the pixels to which a negative polarity signal voltage is applied have different wiring configurations. This is preferable. Figure 14(F) shows that a positive polarity signal voltage is written in the k-th frame. A wiring 5086-1 is electrically connected to the pixel, and a negative polarity signal is received in the k-th frame. This is an example where wiring 5086-2 is electrically connected to the pixel where the voltage is written. However, This is just one example; for instance, a pixel on which a positive polarity signal voltage is written and a pixel on which a negative polarity signal voltage is written. In the case of a driving method where the pixels on which pressure is written appear every two pixels, wiring 5086-1 The electrical connections of wiring 5086-2 are also made alternately every two pixels accordingly. This is preferable. Furthermore, if the same polarity signal voltage is written to all pixels in a row ( There is also gate line inversion, but in that case, one wire 5086 per row is sufficient. Furthermore, even in the pixel configuration shown in Figure 14(C), using Figures 14(F) and 14(G) As described, a driving method that reduces the signal voltage written to the pixels can be used.

[0265] Next, the liquid crystal element is vertically aligned (VA), such as in MVA mode or PVA mode. This section describes a pixel configuration and driving method that is particularly preferred when the mode is VA mode. The code has advantages such as not requiring a rubbing process during manufacturing, having less light leakage when displaying black, and having a low drive voltage. It has excellent features, but the image quality deteriorates when viewed from an angle (narrow viewing angle). ) also has the problem of widening the viewing angle in VA mode. As shown in 5(B), the pixel configuration has multiple subpixels in one pixel. This is effective. The pixel configuration shown in Figures 15(A) and 15(B) is such that pixel 5080 is This is an example showing a case that includes two subpixels (subpixel 5080-1, subpixel 5080-2). Furthermore, the number of subpixels in a single pixel is not limited to two; various numbers of subpixels are possible. It can be used. The larger the number of subpixels, the wider the field of view can be. The subpixels can have the same circuit configuration as each other, and here all subpixels are as shown in Figure 14 The circuit configuration will be explained as being the same as shown in (A). Note that the first sub-pixel 5080-1 is The device has a transistor 5081-1, a liquid crystal element 5082-1, and a capacitive element 5083-1. Furthermore, the respective connection relationships shall conform to the circuit configuration shown in Figure 14(A). The second sub-pixel 5080-2 is a transistor 5081-2, a liquid crystal element 5082-2, and The circuit configuration includes a quantitative element 5083-2, and the connection relationships are shown in Figure 14(A). It shall be treated in accordance with the established standards.

[0266] The pixel configuration shown in Figure 15(A) has two subpixels that make up one pixel, and the scan lines are as follows: There are two 5085 wires to be used (wire 5085-1, wire 5085-2), and as signal lines The diagram shows a configuration that includes one wiring 5084 used for general purposes and one wiring 5086 used as a capacity line. This is how it works. By sharing the signal line and capacitance line between two subpixels, This allows for an improved aperture ratio and also simplifies the signal line drive circuit. Therefore, manufacturing costs can be reduced, and the number of connection points between the LCD panel and the driver circuit IC can be reduced. Therefore, the yield can be improved. The pixel configuration shown in Figure 15(B) consists of two parts that make up one pixel. Each sub-pixel has one wiring 5085 used as a scan line and one wiring 5 used as a signal line. There are two 084 wires (wire 5084-1, wire 5084-2), and wire 5 is used as a capacity line. This represents a configuration with one 086. In this way, the scan line and capacitance line are two sub By sharing pixels, the aperture ratio can be improved, and furthermore, the total number of scan lines can be increased. This reduces the gate line selection time per gate even in high-resolution LCD panels. This allows for longer durations, enabling the writing of appropriate signal voltages to each pixel.

[0267] Figures 15(C) and 15(D) show the liquid crystal elements in the pixel configuration shown in Figure 15(B). This is an example of schematically representing the electrical connection state of each element by replacing the pixel electrode shape with a pixel electrode shape. In Figures 15(C) and 15(D), electrode 5088-1 represents the first pixel electrode. Electrode 5088-2 represents the second pixel electrode. In Figure 15(C), the first pixel The elementary electrode 5088-1 corresponds to the first terminal of the liquid crystal element 5082-1 ​​in Figure 15(B). The second pixel electrode 5088-2 is the first terminal of the liquid crystal element 5082-2 in Figure 15(B). This corresponds to the first pixel electrode 5088-1, which is the saw of transistor 5081-1. The second pixel electrode 5088-2 is electrically connected to either the transistor or the drain. It is electrically connected to either the source or drain of the TA5081-2. Meanwhile, Figure 15(D In this case, the connection relationship between the pixel electrode and the transistor is reversed. That is, the first pixel electrode 5088-1 is electrically connected to either the source or the drain of transistor 5081-2. The second pixel electrode 5088-2 is then the source or drain of transistor 5081-1. It shall be electrically connected to one side of the device.

[0268] The pixel configurations shown in Figures 15(C) and 15(D) are arranged alternately in a matrix. By placing them, special effects can be obtained. Such a pixel configuration and its driving method An example is shown in Figures 15(E) and 15(F). The pixel configuration shown in Figure 15(E) is Figure 15(C) shows the parts corresponding to elements 5080_i,j and pixels 5080_i+1,j+1. The configuration shown is as follows, corresponding to pixels 5080_i+1,j and pixels 5080_i,j+1 The part is configured as shown in Figure 15(D). In this configuration, as shown in Figure 15(F) When driven as shown in the timing chart, in the jth gate selection period of the kth frame... , the first pixel electrode of pixel 5080_i,j and the second pixel electrode of pixel 5080_i+1,j A positive polarity signal voltage is written to the second pixel electrode of pixels 5080_i,j and pixel 5 A negative polarity signal voltage is written to the first pixel electrode of 080_i+1,j. Furthermore, the k During the j+1th gate selection period of the frame, the second pixel electrode of pixel 5080_i,j+1 And a positive polarity signal voltage is written to the first pixel electrode of pixels 5080_i+1,j+1. , the first pixel electrode of pixel 5080_i,j+1 and the second pixel electrode of pixel 5080_i+1,j+1 A negative polarity signal voltage is written to the pixel electrode. In the k+1th frame, each pixel In this case, the polarity of the signal voltage is reversed. By doing this, in the pixel configuration including subpixels By doing so, it achieves a drive equivalent to dot inversion driving, while changing the polarity of the voltage applied to the signal line to 1F Since it can be kept the same within the frame period, the consumption required for writing the pixel signal voltage Power consumption can be significantly reduced. Note that wiring 5086_j and wiring 5086_j+1 The voltage applied to all wiring 5086, including the wiring itself, can be set to a constant voltage.

[0269] Furthermore, the pixel configuration and driving method shown in Figures 15(G) and 15(H) This makes it possible to reduce the magnitude of the signal voltage written to each pixel. This method involves making the capacitance lines electrically connected to the multiple sub-pixels of a pixel different for each sub-pixel. Yes, that is, the pixel configuration and its driving method shown in Figures 15(G) and 15(H) Therefore, subpixels with the same polarity written within the same frame are contained within the same row. For subpixels that share a common quantity line but have different polarities written within the same frame, the same Use different capacity lines within each line. Then, once writing to each line is complete, each capacity The voltage of the line is in the positive direction for subpixels where a positive polarity signal voltage is written, and the negative polarity signal voltage is in the positive direction. In sub-pixels where the voltage is written, the signal voltage written to the pixel is changed in the negative direction. The size can be reduced. Specifically, the wiring 5086 used as a capacity line can be reduced. There are two lines in each row (wiring 5086-1, wiring 5086-2), and the first stroke of pixels 5080_i,j The elementary electrode and the wiring 5086-1_j are electrically connected via a capacitive element, and the pixel 508 The second pixel electrodes of 0_i,j and the wiring 5086-2_j are electrically connected via a capacitive element. The first pixel electrode of pixel 5080_i+1,j and the wiring 5086-2_j are connected, Electrically connected via the element, the second pixel electrode of pixel 5080_i+1,j and wiring 50 86-1_j is electrically connected via a capacitive element, and the first of pixels 5080_i,j+1 1. The pixel electrode and the wiring 5086-2_j+1 are electrically connected via a capacitive element, The second pixel electrode of element 5080_i,j+1 and the wiring 5086-1_j+1 are connected to the capacitive element. Electrically connected via, the first pixel electrode of pixel 5080_i+1,j+1 and wiring 508 6-1_j+1 and are electrically connected via a capacitive element, and pixel 5080_i+1,j+ The second pixel electrode of 1 and the wiring 5086-2_j+1 are electrically connected via a capacitive element. However, this is just one example; for instance, pixels on which a positive polarity signal voltage is written and negative polarity signals on pixels may be written. In the case of a driving method where the polarity signal voltage is written to pixels that appear every two pixels, the wiring The electrical connections of 5086-1 and wiring 5086-2 are also arranged accordingly, alternating every two pixels. It is preferable that this be done. Furthermore, it is preferable that the same polarity signal voltage is written to all pixels in a row. In some cases, the gate lines may be reversed, but in that case, wiring 5086 is 1 per line A book is fine. In other words, even in the pixel configuration shown in Figure 15(E), Figures 15(G) and 15 A driving method that reduces the signal voltage written to the pixels, as explained using (H), is used. It is possible.

[0270] (Embodiment 9) This embodiment describes an example of a display device.

[0271] First, let's refer to Figure 16(A) to explain an example of a liquid crystal display system block. The liquid crystal display device consists of circuits 5361, 5362, 5363_1, and 5363. _2, it has a pixel section 5364, a circuit 5365, and an illumination device 5366. Pixel section 5364 Multiple wires 5371 are arranged extending from circuit 5362, and multiple wires 5372 are It is arranged as an extension from circuits 5363_1 and 5363_2. And multiple In the intersection region of wiring 5371 and multiple wirings 5372, display elements such as liquid crystal elements are provided. The 5367 pixels are arranged in a matrix.

[0272] Circuit 5361, in response to the video signal 5360, circuits 5362, 5363_1, and circuit 5363_2 and circuit 5365 have the function of supplying signals, voltage, or current, Controllers, control circuits, timing generators, power supply circuits, or regulators, etc. It is possible to function in this way. In this embodiment, as an example, circuit 5361 is a circuit 5362 contains the start signal (SSP) for the signal line drive circuit and the clock signal for the signal line drive circuit. (SCK), inverting clock signal for signal line drive circuit (SCKB), data for video signal (D ATA) and a latch signal (LAT) shall be supplied. Alternatively, circuit 5361 is an example. As such, the start signal for the scan line drive circuit is sent to circuits 5363_1 and 5363_2. GSP), clock signal for scan line drive circuit (GCK), and inverting clock for scan line drive circuit The GCKB signal shall be supplied. Alternatively, circuit 5361 shall supply circuit 5365. The backlight control signal (BLC) shall be supplied. However, it shall not be limited to this, Circuit 5361 also carries various signals, various voltages, or various currents, etc., through circuit 5362. It is possible to supply power to circuits 5363_1, 5363_2, and 5365.

[0273] In addition, in circuit 5361, super-resolution processing, edge enhancement processing, frame interpolation processing, and over - Drive processing, local dimming processing, IP conversion processing, and / or scaling processing, etc. It is possible to do so.

[0274] Furthermore, circuit 5365 can perform local dimming and other operations. Alternatively, in circuit 5365, the backlight of each region in the local dimming process It is possible to perform a process to determine the brightness.

[0275] Furthermore, various processes can be performed in circuit 5361 or circuit 5365. Therefore, circuit 5361 or circuit 5365 is composed of many more circuits. This is possible. In other words, circuit 5361 or circuit 5365 is composed of multiple circuits. It is possible to do so. In that case, the multiple circuits that circuit 5361 or circuit 5365 has It is possible to form it on a single IC chip. However, one example of the embodiment is this It is not limited to this. It is possible to divide it into multiple IC chips and arrange them in that location. In either case, circuit 5361 or circuit 5365 is constructed using multiple IC chips.

[0276] Circuit 5362 receives signals supplied from circuit 5361 (e.g., SSP, SCK, SCK It has the function of outputting video signals to multiple wires 5371 depending on B, DATA, LAT. It can function as a signal line driving circuit. Circuit 5363_1 and Circuit 53 63_2 responds to the signals (GSP, GCK, GCKB) supplied from circuit 5361, It has the function of outputting scanning signals to multiple wires 5372 and functions as a scanning line driving circuit. This is possible. Circuit 5365 responds to the signal (BLC) supplied from circuit 5361. By controlling the amount of power or the time supplied to the lighting device 5366, the lighting device It has the function of controlling the brightness (or average brightness) of the 5366 and functions as a power supply circuit. This is possible.

[0277] Furthermore, if video signals are input to multiple wires 5371, the multiple wires 5371 will be... It can function as a signal line, video signal line, or source line, etc. Multiple wiring 5 When a scan signal is input to 372, multiple wires 5372 are signal lines, scan lines, or gate lines. It can function as a G-line, etc. However, the embodiment is not limited to this example. do not have.

[0278] The same signal is input from circuit 5361 to circuits 5363_1 and 5363_2. If so, the scanning signal that circuit 5363_1 outputs to multiple wires 5372, and circuit 536 The scanning signals that 3_2 outputs to multiple wires 5372 are roughly at the same timing. In many cases, the load driven by circuits 5363_1 and 5363_2 is reduced. It can be cut. Therefore, the display device can be made larger. Or, the display device This can be made high-resolution. Alternatively, circuits 5363_1 and 5363_2 have This allows for a reduction in the channel width of the transistor, thus enabling the creation of a narrow-bezel display device. This is possible. However, it is not limited to this, and circuit 5361 can be connected to circuit 5363_1 and circuit 53 It is possible to supply separate signals to 63_2 and 63_2.

[0279] Note that either circuit 5363_1 or circuit 5363_2 can be omitted.

[0280] Furthermore, new wiring such as capacitance lines, power lines, and scanning lines will be added to the pixel section 5364. This is possible. And circuit 5361 outputs signals or voltages to these wires. This is possible. Alternatively, a new circuit similar to circuit 5363_1 or circuit 5363_2 can be created. In addition, this newly added circuit outputs signals such as scanning signals to the newly added wiring. It is possible to do so.

[0281] Furthermore, pixel 5367 can have a light-emitting element such as an EL element as a display element. In this case, as shown in Figure 16(B), the display element can emit light, so the circuit 5365 and the lighting device 5366 can be omitted. To supply power, multiple wires 5373 that can function as power lines are provided in the pixel section 5 It is possible to arrange it in 364. Circuit 5361 is a power supply voltage called voltage (ANO) It is possible to supply power to wiring 5373. This wiring 5373 is connected according to the color element of the pixel. It is possible to do so, and it is possible to connect it to all pixels in common.

[0282] Note that in Figure 16(B), as an example, circuit 5361 is connected to circuit 5363_1 and circuit 53 An example of supplying separate signals to 63_2 is shown. Circuit 5361 is a scan line driving circuit. Start signal (GSP1), clock signal for scan line drive circuit (GCK1), and scan line Signals such as the inverting clock signal (GCKB1) for the drive circuit are supplied to circuit 5363_1. Circuit 5361 then provides a start signal (GSP2) for the scan line drive circuit, and the scan line drive circuit The clock signal (GCK2) and the inverting clock signal (GCKB2) for the scan line drive circuit. Which signal is supplied to circuit 5363_2? In this case, circuit 5363_1 has multiple wires 5 Only the odd-numbered rows of wiring out of 372 are scanned, and circuit 5363_2 is multiple wirings 5372 It becomes possible to scan only the wiring in the even-numbered rows. Therefore, circuit 5363_1, and Since the driving frequency of circuit 5363_2 can be reduced, power consumption can be reduced. Alternatively, increase the area available for laying out one stage of flip-flops. This allows for high-resolution displays. Alternatively, the display can be made larger. It is possible. However, it is not limited to this, and, as in Figure 16(A), circuit 5361 is It is possible to output the same signal to both circuit 5363_1 and circuit 5363_2.

[0283] Note that, similar to Figure 16(B), in Figure 16(A), circuit 5361 is also circuit 536 It is possible to supply separate signals to circuit 3_1 and circuit 5363_2.

[0284] The above describes an example of a system block for a display device.

[0285] Next, an example of the configuration of the display device is shown in Figures 17(A), (B), (C), (D), and (E) is explained below.

[0286] Figure 17(A) shows a circuit that has the function of outputting a signal to the pixel unit 5364 (for example, a circuit Circuits 5362, 5363_1, and 5363_2, etc., are based on the same base as the pixel section 5364. It is formed on board 5380. The circuit 5361 is formed on a separate substrate from the pixel section 5364. This reduces the number of external parts, thus lowering costs. As the number of signals or voltages input to board 5380 decreases, the board 5380 and external components The number of connections can be reduced. Therefore, reliability or yield can be improved. It is possible.

[0287] Furthermore, if the circuit is formed on a substrate separate from the pixel section 5364, the substrate is TAB(T APE Automated Bonding (FPC) It can be mounted on a printed circuit board. This uses the COG (Chip on Glass) method and is mounted on the same substrate 53 as the pixel unit 5364. It can be implemented in version 80.

[0288] Furthermore, if the circuit is formed on a substrate separate from the pixel section 5364, the substrate may contain a single-crystal semiconductor. It is possible to form a transistor using a conductor. Therefore, the substrate is formed The circuit offers advantages such as improved drive frequency, increased drive voltage, and reduced output signal variation. You can obtain a ticket.

[0289] Furthermore, signals, voltages, or currents can be input from external circuits via input terminal 5381. This often happens.

[0290] In Figure 17(B), circuits with low drive frequencies (for example, circuit 5363_1, circuit 5363 _2) is formed on the same substrate 5380 as the pixel section 5364. And the circuit 5361, and The circuit 5362 is formed on a separate substrate from the pixel section 5364. In this way, the mobility is small. The transistor makes it possible to construct the circuit formed on the substrate 5380. Therefore, as semiconductor layers of transistors, non-single-crystal semiconductors, microcrystalline semiconductors, organic semiconductors, Alternatively, oxide semiconductors can be used. Therefore, the size of the display device and the process This can lead to a reduction in quantity, cost reduction, or improved yield.

[0291] Furthermore, as shown in Figure 17(C), a part of circuit 5362 (circuit 5362a) is the pixel section 5 It is formed on the same substrate 5380 as 364, and the remaining circuit 5362 (circuit 5362b) is the pixel section. Circuit 5362a can be formed on a different substrate than 5364. Circuit 5362a has low mobility. Circuits that can be constructed using transistors (e.g., shift registers, selectors, It often has switches, etc. And circuit 5362b has high mobility and characteristics A circuit that is preferably constructed using transistors with low rattle (for example, a shift register) They often have (stack, latch, buffer, DA conversion, AD conversion, etc.) i. By doing this, as in Figure 17(B), the semiconductor layer of the transistor is non It is possible to use single-crystal semiconductors, microcrystalline semiconductors, organic semiconductors, or oxide semiconductors. This allows for further reduction of external components.

[0292] Figure 17(D) shows a circuit that has the function of outputting a signal to the pixel unit 5364 (for example, a circuit Circuits 5362, 5363_1, and 5363_2, etc., and the control of these circuits A circuit having the function of (for example, circuit 5361) is formed on a separate substrate from the pixel section 5364. This makes it possible to form the pixel section and its surrounding circuitry on separate substrates. This allows for an improvement in yield.

[0293] Furthermore, similar to Figure 17(D), in Figures 17(A) to (C), circuit 5363_1, Furthermore, the circuit 5363_2 can be formed on a separate substrate from the pixel section 5364.

[0294] In Figure 17(E), a part of circuit 5361 (circuit 5361a) is based on the same base as the pixel unit 5364. It is formed on plate 5380, and the remaining circuit 5361 (circuit 5361b) is separate from the pixel section 5364. It is formed on the substrate. Circuit 5361a is composed of transistors with low mobility. If the circuit has the capability to do so (e.g., a switch, selector, level shift circuit, etc.) There are many of them. And circuit 5361b uses transistors with high mobility and low variability. A circuit that is preferably configured in this way (for example, a shift register, a timing generator, They often contain oscillators, regulators, or analog buffers.

[0295] In addition, in Figures 17(A) to (D), circuit 5361a is on the same substrate as the pixel unit 5364. It is possible to form the circuit 5361b on a separate substrate from the pixel section 5364.

[0296] (Embodiment 10) In this embodiment, an example of the transistor structure is shown in Figures 18(A), (B), and ( Refer to C) for further explanation.

[0297] Figure 18(A) shows an example of the configuration of a top-gate type transistor. Figure 18(B) is This is an example of the configuration of a bottom-gate type transistor. Figure 18(C) shows a semiconductor substrate. This is an example of the structure of a transistor that is manufactured using this method.

[0298] Figure 18(A) shows a substrate 5260 and an insulating layer 5261 formed on the substrate 5260. , formed on the insulating layer 5261, region 5262a, region 5262b, region 5262c, A semiconductor layer 5262 having regions 5262d and 5262e, and covering the semiconductor layer 5262 An insulating layer 5263 is formed in such a way, and a semiconductor layer 5262 and an insulating layer 5263 are formed on top of the insulating layer 5263. A conductive layer 5264 is formed on the insulating layer 5263 and the conductive layer 5264, and has an opening. An insulating layer 5265 and a guide formed on the insulating layer 5265 and in the opening of the insulating layer 5265 A conductive layer 5266 and an insulating layer 5265 formed on top of the conductive layer 5266 and having an opening An insulating layer 5267 and conductive material formed on the insulating layer 5267 and in the openings of the insulating layer 5267. A layer 5268 is formed on the insulating layer 5267 and on the conductive layer 5268, and has an opening. An insulating layer 5269 and a light-emitting layer formed on the insulating layer 5269 and in the openings of the insulating layer 5269. 5270 and a conductive layer 5271 formed on the insulating layer 5269 and on the light-emitting layer 5270 This indicates.

[0299] Figure 18(B) shows a substrate 5300 and a conductive layer 5301 formed on the substrate 5300. , an insulating layer 5302 formed to cover the conductive layer 5301, and the conductive layer 5301 and the insulating layer A semiconductor layer 5303a formed on 5302, and a semiconductor layer 5303a formed on 5302 A semiconductor layer 5303b and a conductive layer formed on the semiconductor layer 5303b and on the insulating layer 5302 A dielectric layer 5304 and a conductive layer 5302 formed on top of the conductive layer 5304 and having an opening An insulating layer 5305 and conductive material formed on the insulating layer 5305 and in the openings of the insulating layer 5305. Layer 5306 and liquid crystal layer 5307, which is placed on the insulating layer 5305 and on the conductive layer 5306. This shows the conductive layer 5308 formed on the liquid crystal layer 5307.

[0300] Figure 18(C) shows a semiconductor substrate 5352 having regions 5353 and 5355, and a semi An insulating layer 5356 formed on the conductive substrate 5352, and a semiconductor substrate 5352 formed on the semiconductor substrate 5352 An insulating layer 5354, a conductive layer 5357 formed on the insulating layer 5356, and an insulating layer 53 54, an insulating layer 5356 and a conductive layer 5357 formed on top of the insulating layer 5356 and the insulating layer 5357, having an opening 58 and the conductive layer 5359 formed on the insulating layer 5358 and in the opening of the insulating layer 5358. This shows that transistors are fabricated in region 5350 and region 5351, respectively. .

[0301] The insulating layer 5261 can function as an undercoat. The insulating layer 5354 is an element It functions as an inter-layer (e.g., a field oxide film). Insulating layer 5263, insulating layer 5302 The insulating layer 5356 can function as a gate insulating film. The conductive layer 5264, The conductive layer 5301 and conductive layer 5357 can function as gate electrodes. Layer 5265, insulating layer 5267, insulating layer 5305, and insulating layer 5358 are interlayer films, or flat It can function as a tanning film. Conductive layer 5266, conductive layer 5304, and conductive layer 5359 can function as wiring, transistor electrodes, or capacitive element electrodes. It is possible. The conductive layer 5268 and the conductive layer 5306 can be used as pixel electrodes or reflective electrodes, etc. It is possible for it to function. The insulating layer 5269 can function as a partition. The conductive layer 5271 and the conductive layer 5308 function as counter electrodes or common electrodes, etc. It is possible.

[0302] Examples of substrates 5260 and 5300 include glass substrates, quartz substrates, and silicon substrates. Examples include plates, metal substrates, stainless steel substrates, or flexible substrates. An example of a glass substrate is... Examples include barium borosilicate glass and aluminobosilicate glass. An example of a flexible substrate. Examples include polyethylene terephthalate (PET) and polyethylene naphthalate (PEN). ), plastics such as polyethersulfone (PES), or acrylics, etc. Flexible synthetic resins are one example. Other examples include laminated films (polypropylene, poly Paper containing fibrous materials (such as esters, vinyl, polyvinyl fluoride, and polyvinyl chloride), substrates Examples include films (polyester, polyamide, inorganic vapor-deposited films, paper, etc.).

[0303] As an example of the semiconductor substrate 5352, single crystal Si having an n-type or p-type conductivity is used. A circuit board can be used. However, it is not limited to this, and other similar boards as circuit board 5260 can also be used. It is possible to use this. Region 5353 is, for example, a semiconductor substrate 5352 with impurities This is a region to which a substance is added, and it functions as a well. For example, if the semiconductor substrate 5352 is p-type If a conductivity type is present, region 5353 has an n-type conductivity and functions as an n-well. On the other hand, if the semiconductor substrate 5352 has an n-type conductivity, then region 5353 has a p-type conductivity. It has and functions as a p-well. Region 5355 is, for example, a semiconductor substrate 5 This is a region added to 352 and functions as either a source region or a drain region. It is possible to form an LDD region on the conductive substrate 5352.

[0304] An example of an insulating layer 5261 is silicon dioxide (SiO₂). x ), silicon nitride (SiN x ), oxidation Silicon nitride (SiO x N y )(x>y), silicon nitride (SiN x O y )(x>y) etc. This includes films containing oxygen or nitrogen, or laminated structures thereof. The insulating layer 5261 consists of two layers. One example of a structure that provides this is a silicon nitride film as the first insulating layer, and the second layer A silicon oxide film can be provided as an insulating film. The insulating layer 5261 is provided in a three-layer structure. One example of a case where this is possible is to provide a silicon oxide film as the first insulating layer, and then provide a second insulating layer and It is possible to provide a silicon nitride film and then a silicon oxide film as a third insulating layer.

[0305] Examples of semiconductor layers 5262, 5303a, and 5303b include non Single-crystal semiconductors (amorphous silicon, polycrystalline silicon, microcrystalline silicon, etc.) ), single crystal semiconductors, compound semiconductors or oxide semiconductors (ZnO, InGaZnO, Si Ge, GaAs, IZO, ITO, SnO), organic semiconductors, or carbon nanotubes There is.

[0306] For example, region 5262a is an intrinsic region where no impurities are added to the semiconductor layer 5262. is in a state and functions as a channel region. However, minute impurities can be added to region 5262a, and the impurities added to region 5262a are lower in concentration than the impurities added to region 5262b, region 5262c, region 5262d, or region 5262e. Regions 5262b and 5262d are regions to which impurities are added at a low concentration and function as LDD (Lightly Doped Drain: LDD) regions. However, regions 5262b and 5262d can be omitted. Regions 5262c and 5262e are regions to which impurities are added to the semiconductor layer 5262 at a high concentration and function as source regions

[0307] or drain regions. Note that the semiconductor layer 53o3b is a semiconductor layer to which

[0308] impurity elements such as phosphorus are added and has an n-type conductivity type.

[0309] Examples of the insulating layer 5263, the insulating layer 5302, and the insulating layer 5356 include films having oxygen or nitrogen such as x silicon oxide (SiO x ), silicon nitride (SiN x ), silicon oxynitride (SiO y )(x > y), silicon nitride oxide (SiN O x )(x > y), etc., or laminated y structures thereof.

[0310] The conductive layers 5264, 5266, 5268, 5271, and 5301 ​, conductive layer 5304, conductive layer 5306, conductive layer 5308, conductive layer 5357, and conductive layer 53 Examples of 59 include single-layer conductive films or multilayer structures thereof. Examples include aluminum (Al), tantalum (Ta), titanium (Ti), and molybdenum. Chromium (Mo), Tungsten (W), Neodymium (Nd), Chromium (Cr), Nickel (Ni ), platinum (Pt), gold (Au), silver (Ag), copper (Cu), manganese (Mn), cobalt (Co), niobium (Nb), silicon (Si), iron (Fe), palladium (Pd), carbon (C), scandium (Sc), zinc (Zn), phosphorus (P), boron (B), arsenic (As) It is composed of gallium (Ga), indium (In), tin (Sn), and oxygen (O). A single element film selected from the group, or one or more elements selected from the group This includes compounds that contain such compounds. An example of such a compound is one or more selected from the above group. Alloys containing several elements (indium tin oxide (ITO), indium zinc oxide (IZO)) , indium tin oxide (ITSO) containing silicon oxide, zinc oxide (ZnO), tin oxide (Sn O), tin cadmium oxide (CTO), aluminum neodymium (Al-Nd), magnesium silver ( Mg-Ag, molybdenum niobium (Mo-Nb), molybdenum tungsten (Mo-W) (, alloy materials such as molybdenum tantalum (Mo-Ta), one selected from the above group or These are compounds of multiple elements and nitrogen (such as titanium nitride, tantalum nitride, molybdenum nitride, etc.). A film), or a compound of silicon with one or more elements selected from the group (tang Stainless steel silicide, titanium silicide, nickel silicide, aluminum silicon, molybdenum Examples include silicon silicide films. Other examples include carbon nanotubes and organic nanotubes. Nanotube materials include tubes, inorganic nanotubes, and metallic nanotubes.

[0311] Note that silicon (Si) contains either n-type impurities (such as phosphorus) or p-type impurities (such as boron). It is possible to include this.

[0312] Furthermore, when copper is used as a conductive layer, a laminated structure is used to improve adhesion. This is preferable.

[0313] Furthermore, the conductive layer in contact with the oxide semiconductor or silicon may be molybdenum or titanium. It is preferable to use [this].

[0314] Furthermore, by using an alloy material of neodymium and aluminum as the conductive layer, Minium becomes less likely to cause hillocks.

[0315] Furthermore, when using semiconductor materials such as silicon as the conductive layer, It is possible to form the material simultaneously with the semiconductor layer of the transistor.

[0316] Furthermore, ITO, IZO, ITSO, ZnO, Si, SnO, CTO, or carbon nano Since tubes and the like are light-transmitting, these materials can be used as pixel electrodes, counter electrodes, or joints. It can be used in light-transmitting parts such as conductive electrodes.

[0317] Furthermore, by using low-resistance materials (such as aluminum) to create a laminated structure, The resistance of the wiring can be reduced.

[0318] Furthermore, low heat-resistant materials (such as aluminum) are used with high heat-resistant materials (such as molybdenum). By creating a laminated structure sandwiched between materials (such as densitic, titanium, and neodymium), a low heat-resistant material can be produced. This method allows you to leverage the advantages of the material while also increasing the heat resistance of wiring, electrodes, and other components.

[0319] Furthermore, materials that react with other materials and change their properties are described as materials that are less reactive with those other materials. Depending on the material, it is possible to sandwich or cover them. For example, ITO and aluminum. When connecting them, neodymium alloy, titanium, molybdenum should be placed between the ITO and the aluminum. It is possible to insert things like dens. For example, when connecting silicon and aluminum. This involves sandwiching neodymium alloy, titanium, and molybdenum between silicon and aluminum. It is possible. These materials include wiring, electrodes, conductive layers, conductive films, terminals, vias, and plugs. It can also be used for other purposes.

[0320] Insulating layer 5265, insulating layer 5267, insulating layer 5269, insulating layer 5305, and insulating layer 53 Examples of 58 include single-layer insulating films or multilayer structures thereof. One example is silicon dioxide (SiO₂). x ), silicon nitride (SiN x ), or silicon oxide nitride (SiO x N y )(x>y), silicon nitride (SiN x O y )(x>y) etc oxygen or This includes nitrogen-containing films, carbon-containing films such as DLC (diamond-like carbon), or white Xanthane resins, epoxy, polyimides, polyamides, polyvinylphenols, benzocyclo Examples include butene or organic materials such as acrylic.

[0321] Examples of the light-emitting layer 5270 include organic EL elements and inorganic EL elements. An example of an L element is a hole injection layer made of a hole injection material and a hole transport layer made of a hole transport material. A light-emitting layer made of a transport layer, an electron-transport layer made of an electron-transport material, and an electron-injection material An electron injection layer, or a single layer structure of a mixture of multiple materials, These include layered structures.

[0322] Examples of liquid crystal layer 5307 include nematic liquid crystals, cholesteric liquid crystals, and smectic liquid crystals. Liquid crystal, discotic liquid crystal, thermotropic liquid crystal, lyotropic liquid crystal, low molecular weight liquid crystal, Polymer liquid crystals, polymer dispersed liquid crystals (PDLCs), ferroelectric liquid crystals, antiferroelectric liquid crystals, main-chain liquid crystals, Examples include side-chain polymer liquid crystals, plasma-addressable liquid crystals (PALC), and banana-shaped liquid crystals. It can do that. Also, as for the LCD driving method, TN (Twisted Nematic) Code, STN (Super Twisted Nematic) mode, IPS (In- Plane-Switching) mode, FFS (Fringe Field Switching) tching) mode, MVA (Multi-domain Vertical Ali gnment) mode, PVA(Patterned Vertical Alignm) ent) mode, ASV (Advanced Super View) mode, ASM ( Axially Symmetrically aligned Micro-cell) mode , OCB (Optically Compensated Birefringence) ) Mode, ECB (Electrically Controlled Birefringence ngence) mode, FLC (Ferroelectric Liquid Crystal tal) mode, AFLC(AntiFerroelectric Liquid Cr (ystal) mode, PDLC (Polymer Dispersed Liquid) Crystal mode, guest host mode, Blue Phase mode There are others, such as Do.

[0323] Furthermore, an insulating layer that functions as an alignment film is placed on top of the insulating layer 5305 and the conductive layer 5306. It is possible to form insulating layers that function as protrusions.

[0324] Furthermore, on top of the conductive layer 5308, there are a color filter, a black matrix, or protrusions. It is possible to form insulating layers and the like that which function as conductive layers. Below the conductive layer 5308 is an alignment film. It is possible to form an insulating layer that functions as such.

[0325] In the cross-sectional structure shown in Figure 18(A), the insulating layer 5269, the light-emitting layer 5270, and the conductive layer are located in the same area. Layer 5271 is omitted, and the liquid crystal layer 5307 and conductive layer 5308 shown in Figure 18(B) are replaced with insulating layer 52 It is possible to form it on 67 and on the conductive layer 5268.

[0326] Note that in the cross-sectional structure of Figure 18(B), the liquid crystal layer 5307 and the conductive layer 5308 are omitted. The insulating layer 5269, the light-emitting layer 5270, and the conductive layer 5271 shown in Figure 18(A) are connected to the insulating layer 53 It can be formed on 05 and on the conductive layer 5306.

[0327] Furthermore, in the cross-sectional structure of Figure 18(C), on top of the insulating layer 5358 and the conductive layer 5359, The insulating layer 5269, the light-emitting layer 5270, and the conductive layer 5271 shown in Figure 18(A) are formed. This is possible. Alternatively, the liquid crystal layer 5307 and conductive layer 5308 shown in Figure 18(B) can be insulated. It is possible to form it on layer 5267 and on the conductive layer 5268.

[0328] (Embodiment 11) In this embodiment, an example of an electronic device will be described.

[0329] Figures 19(A) to 19(H) and 20(A) to 20(D) are diagrams showing electronic equipment. These electronic devices consist of a housing 5000, a display unit 5001, a speaker 5003, and an LE. D lamp 5004, operation key 5005 (including power switch or operation switch), connection Terminal 5006, Sensor 5007 (force, displacement, position, velocity, acceleration, angular velocity, rotational speed, distance) Light, liquid, magnetism, temperature, chemicals, sound, time, hardness, electric field, electric current, voltage, power, radiation (including functions for measuring flow rate, humidity, gradient, vibration, odor, or infrared radiation), Microwave It can have 5008, etc.

[0330] Figure 19(A) shows a mobile computer, and in addition to the above, it also has a switch 5009 It may have an infrared port 5010, etc. Figure 19(B) shows a portable recording device equipped with a recording medium. A strip-type image playback device (for example, a DVD player), and in addition to those mentioned above, see Table 2. It may have a display unit 5002, a recording medium reading unit 5011, etc. Figure 19(C) is a Go It is a group-type display, and in addition to the above, it includes a second display unit 5002 and a support unit 5012 It may have earphones 5013, etc. Figure 19(D) is a portable gaming machine, and above In addition to those described above, it may also have a recording medium reading unit 5011, etc. Figure 19(E) It is a projector and, in addition to the above, has a light source 5033, a projection lens 5034, etc. It is possible. Figure 19(F) is a portable gaming machine, and in addition to the above, a second display It may have a section 5002, a recording medium reading section 5011, etc. Figure 19(G) is a television. It is a picture receiver and, in addition to the above, may have a tuner, an image processing unit, etc. Figure 19(H) shows a portable television receiver, which, in addition to the above, can transmit and receive signals. It can have a charger 5017, etc. Figure 20(A) is a display, and above In addition to those described above, it may also have a support base 5018, etc. Figure 20(B) shows the camera In addition to those mentioned above, there is an external connection port 5019, a shutter button 5015, and an image receiver. It may have parts 5016, etc. Figure 20(C) is a computer, and the above-mentioned In addition to the above, there is a pointing device 5020, an external connection port 5019, and a reader / writer. 5021, etc. may be included. Figure 20(D) is a mobile phone, and the above-mentioned Other items include antenna 5014 and a 1-segment partial reception service for mobile phones and mobile terminals. It may have a na, etc.

[0331] The electronic devices shown in Figures 19(A) to 19(H) and 20(A) to 20(D) are various It can have various functions. For example, various types of information (still images, videos, text images, etc.) Features include: a display function for the date and time, a touch panel function, and a calendar display. Functions that control processing through various software (programs), wireless communication functions , a function to connect to various computer networks using wireless communication, wireless communication function A function that uses this to send or receive various types of data, and a program recorded on a recording medium. Alternatively, it may have a function to read data and display it on the display unit, etc. Furthermore, multiple In electronic devices having a display unit, one display unit is primarily used to display image information, and another... A function that primarily displays text information on one display unit, or a function that takes parallax into consideration for multiple display units. It can have functions such as displaying three-dimensional images by displaying a single image. In electronic devices having an image receiving unit, functions for taking still images, functions for taking videos, and Functions to automatically or manually correct shadowed images, and to record captured images on a recording medium (external or camera). It can have functions such as saving to a built-in storage unit, displaying captured images on the display unit, etc. Furthermore, the electronic equipment shown in Figures 19(A) to 19(H) and Figures 20(A) to 20(D) The functions that a vessel can possess are not limited to these; it can have a variety of functions.

[0332] The electronic device described in this embodiment has a display unit for displaying some kind of information. It is characterized by the following.

[0333] Next, we will explain some application examples of semiconductor devices.

[0334] Figure 20(E) shows an example of a semiconductor device being installed as an integral part of a building. E) consists of a housing 5022, a display unit 5023, a remote control device 5024 which is the operating unit, and a speaker. Includes 5025, etc. The semiconductor equipment is wall-mounted and integrated with the building, and is installed in a space It can be installed without requiring a large space.

[0335] Figure 20(F) shows another example in which semiconductor equipment is installed within a building, integrated with the building itself. The display panel 5026 is installed integrally with the unit bath 5027, and bathing The user will be able to view the display panel 5026.

[0336] In this embodiment, walls and a unit bathroom were used as examples of buildings, but in this embodiment... The form is not limited to this, and semiconductor devices can be installed in various types of buildings.

[0337] Next, we will show an example in which a semiconductor device is integrated with a mobile device.

[0338] Figure 20(G) shows an example of a semiconductor device installed in an automobile. Lu 5028 is attached to the vehicle body 5029 and operates within the vehicle body or inside and outside the vehicle The information entered can be displayed on demand. Furthermore, the navigation function... It is acceptable to have it.

[0339] Figure 20(H) shows an example of a semiconductor device being integrated with a passenger aircraft. Figure 20(H) shows a display panel 5031 on the ceiling 5030 above the seats of a passenger airplane. This diagram shows the shape when in use, when the display panel 5031 is installed on the ceiling 5 030 and the hinge portion 5032 are attached together, and the hinge portion 5032 extends and retracts. This allows passengers to view the display panel 5031. The display panel 5031 is operated by the passengers. It has the function of displaying information by doing so.

[0340] In this embodiment, examples of mobile bodies include automobile bodies and aircraft bodies. However, it is not limited to this, and also includes motorcycles, four-wheeled vehicles (including automobiles, buses, etc.), and trains (monoplanes). It can be installed on various things, including rails, railways, etc., ships, etc. [Explanation of Symbols]

[0341] 101 Circuit 102 circuits 301 area 302 areas 303 areas 1001 Equipment 1002 Point light source 1003 threshold 1004 threshold 1005 Spacer 1006 Vertical pitch 1007 Lateral pitch 1011 Diffuser 1012 Display Panel 1013 Height 1014 Height 1015 interval 1102 Surface light source 1103 Line light source 1104 Light guide plate 1105 Bottom 1106 Fluorescent tube (cathode tube) 1107 Diffuser 5000 cabinets 5001 Display section 5002 2nd display section 5003 Speaker 5004 LED Lamp 5005 Operation Keys 5006 Connection terminal 5007 Sensor 5008 Microphone 5009 Switch 5010 Infrared Port 5011 Recording medium reading unit 5012 Support part 5013 Earphones 5015 Shutter button 5016 Image receiving unit 5018 Support stand 5019 External connection port 5020 Pointing Device 5021 Leader / Writer 5022 enclosure 5023 Display section 5024 Remote control device 5025 Speaker 5026 Display Panel 5027 Unit Bathroom 5028 Display Panel 5029 Car body 5030 Ceiling 5031 Display Panel 5032 Hinge section 5033 Light source 5034 Projection Lens 5080 pixels 5081 Transistor 5082 Liquid crystal element 5083 Capacitive element 5084 Wiring 5085 Wiring 5086 Wiring 5087 Wiring 5101 Dashed line 5102 Solid line 5103 Dashed line 5104 Solid line 5105 Solid line 5106 Solid line 5107 Solid line 5108 Solid line 5121 images 5121a Image 5121b Image 5122 images 5122a Image 5122b Image 5123 images 5123a Image 5123b Image 5124 area 5125 area 5126 area 5127 Motion vector 5128 Vectors for image generation 5129 area 5130 Object 5131 area 5260 circuit board 5261 Insulating layer 5262 Semiconductor layer 5262a area 5262b area 5262c area 5262d area 5262e area 5263 Insulating layer 5264 Conductive layer 5265 Insulating layer 5266 Conductive layer 5267 Insulating layer 5268 Conductive layer 5269 Insulating layer 5270 Emitting layer 5271 Conductive layer 5300 circuit boards 5301 Conductive layer 5302 Insulating layer 5303a Semiconductor layer 5303b Semiconductor layer 5304 Conductive layer 5305 Insulating layer 5306 Conductive layer 5307 Liquid crystal layer 5308 Conductive layer 5350 area 5351 area 5352 Semiconductor substrate 5353 area 5354 Insulating layer 5355 area 5356 Insulating layer 5357 Conductive layer 5358 Insulating layer 5359 Conductive layer 5360 Video signal 5361 Circuit 5361a Circuit 5361b circuit 5362 Circuit 5362a Circuit 5362b circuit 5363 Circuit 5364 pixel section 5365 Circuit 5366 Lighting device 5367 pixels 5371 Wiring 5372 Wiring 5373 Wiring 5380 circuit board 5381 Input terminal

Claims

[Claim 1] A method for driving a liquid crystal display device having a backlight and pixels, The first step is to perform super-resolution processing using the first data, A second step is to perform a first local dimming process using the second data on which the super-resolution processing has been performed, The process includes a third step of performing a second local dimming process using the third data on which the first local dimming process has been performed, The first local dimming process includes a process for controlling the brightness of the backlight, The second local dimming process is a method for driving a liquid crystal display device, which includes a process for controlling the signals supplied to the pixels.

Images