Semiconductor equipment

Abstract

To provide a new input / output panel having excellent convenience and reliability.SOLUTION: The present invention relates to an input-output panel having a gate wire, a first electrode, a second electrode, a current detection circuit, and a pixel. The first electrode is electrically connected to the gate wire. The second electrode intersects with the gate wire and forms capacitance with the first electrode. The current detection circuit is electrically connected to the second electrode and has a function of detecting change of the capacitance. The pixel has a transistor and a display element. The transistor has a gate electrode, a source electrode, and a drain electrode. The gate electrode is electrically connected to the gate wire. The display element has a third electrode and a liquid crystal material. The third electrode is electrically connected to the source electrode and the drain electrode.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] One aspect of the present invention relates to an input / output panel, a semiconductor device, and a driving method.

[0002] Note that one aspect of the present invention is not limited to the above technical field. The technical field of one aspect of the invention disclosed in this specification etc. is related to an object, a method, or a manufacturing method. Or, one aspect of the present invention is related to a process, a machine, a manufacture, or a composition (composition of matter). Therefore, more specifically, as the technical field of one aspect of the present invention disclosed in this specification examples thereof include a semiconductor device, a display device, a light-emitting device, a power storage device, a storage device, their driving methods, or their manufacturing methods.

Background Art

[0003] A common electrode for display originally provided in a liquid crystal display element is also used as one of a pair of touch sensor electrodes (driving electrode), and the other electrode (sensor detection electrode) is newly formed. Also, a configuration is known in which an existing common drive signal as a display drive signal is shared as a touch sensor drive signal (Patent Document 1).

[0004] Touch signal lines such as drive lines and sense lines in a display pixel stack-up and circuit elements such as a ground region are grouped together to form a touch sensing circuit that senses a touch on or near the display.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

[0006] One aspect of the present invention aims to provide a novel input / output panel that is superior in convenience or reliability. One of the topics is to provide a novel input / output panel or a novel semiconductor device. This will be the first topic.

[0007] Furthermore, the description of these problems does not preclude the existence of other problems. The approach does not need to solve all of these problems. This will become clear from the description in the specification, drawings, claims, etc., and the specification, drawings It is possible to extract other issues from the descriptions in the surfaces, claims, etc. [Means for solving the problem]

[0008] (1) An input / output panel according to one aspect of the present invention includes gate wiring, a first electrode, a second electrode, It has a current detection circuit and a pixel. The first electrode is electrically connected to the gate wiring. The second electrode is positioned to intersect the gate wiring and form a capacitance with the first electrode. The current detection circuit is electrically connected to the second electrode and has the function of detecting changes in capacitance. Each pixel comprises a transistor and a display element. The transistor has a gate electrode and a socket. It includes a gate electrode and a drain electrode. The gate electrode is electrically connected to the gate wiring. The display element comprises a third electrode and a liquid crystal material. The third electrode is a source electrode or a drain electrode. It is electrically connected to the electrode.

[0009] (2) In the above structure, the third electrode is preferably arranged to form an electric field for controlling the alignment of the liquid crystal material between it and the second electrode. It is preferable that the third electrode is arranged to form an electric field for controlling the alignment of the liquid crystal material between it and the second electrode.

[0010] (3) In each of the above structures, it is preferable that the third electrode has a region sandwiched between the liquid crystal material and the second electrode. It is preferable that the third electrode has a region sandwiched between the liquid crystal material and the second electrode.

[0011] (4) In each of the above structures, the display element has a fourth electrode. The third electrode is arranged to form an electric field for controlling the alignment of the liquid crystal material between it and the fourth electrode. It is preferable that the fourth electrode is electrically connected to a wiring to which a common potential is applied. The third electrode is arranged to form an electric field for controlling the alignment of the liquid crystal material between it and the fourth electrode. It is preferable that the fourth electrode is electrically connected to a wiring to which a common potential is applied. It is preferable that the fourth electrode is electrically connected to a wiring to which a common potential is applied.

[0012] (5) In each of the above structures, it is preferable that the third electrode has a region sandwiched between the liquid crystal material and the fourth electrode. It is preferable that the third electrode has a region sandwiched between the liquid crystal material and the fourth electrode.

[0013] (6) In each of the above structures, it is preferable that the first electrode contains the same material as that contained in the third electrode, and the second electrode contains the same material as that contained in the fourth electrode. It is preferable that the first electrode contains the same material as that contained in the third electrode, and the second electrode contains the same material as that contained in the fourth electrode.

[0014] (7) In each of the above structures, having a backlight, either one or both of the second electrode and the third electrode have a reflectance of 5% or more and less than 100% and a transmittance of 1% or more and less than 95% with respect to light in the wavelength range of 400 nm or more and less than 800 nm. It is preferable that the backlight can irradiate light to the layer containing the liquid crystal material. In each of the above structures, having a backlight, either one or both of the second electrode and the third electrode have a reflectance of 5% or more and less than 100% and a transmittance of 1% or more and less than 95% with respect to light in the wavelength range of 400 nm or more and less than 800 nm. It is preferable that the backlight can irradiate light to the layer containing the liquid crystal material. In each of the above structures, having a backlight, either one or both of the second electrode and the third electrode have a reflectance of 5% or more and less than 100% and a transmittance of 1% or more and less than 95% with respect to light in the wavelength range of 400 nm or more and less than 800 nm. It is preferable that the backlight can irradiate light to the layer containing the liquid crystal material. It is preferable that the backlight can irradiate light to the layer containing the liquid crystal material.

[0015] (8) In each of the above structures, having a backlight, either one or both of the third electrode and the fourth electrode have a reflectance of 5% or more and less than 100% and a transmittance of 1% or more and less than 95% with respect to light in the wavelength range of 400 nm or more and less than 800 nm. In each of the above structures, having a backlight, either one or both of the third electrode and the fourth electrode have a reflectance of 5% or more and less than 100% and a transmittance of 1% or more and less than 95% with respect to light in the wavelength range of 400 nm or more and less than 800 nm. More than 0% and less than 100%, and the transmittance is more than 1% and less than 95%. The backlight is preferably capable of irradiating light onto the layer containing the liquid crystal material. It is preferable that the layer containing the liquid crystal material can be irradiated with light.

[0016] (9) The input / output panel according to one aspect of the present invention includes a gate wiring, a first electrode, a second electrode, a current detection circuit, and pixels. The first electrode is electrically connected to the gate wiring. The second electrode intersects the gate wiring and is arranged to form a capacitance with the first electrode. The current detection circuit is electrically connected to the second electrode and has a function of detecting a change in capacitance. The pixel includes a first transistor, a second transistor, and a light-emitting element. The first transistor has a first gate electrode, a first source electrode, and a first drain electrode. The second transistor has a second gate electrode, a second source electrode, and a second drain electrode. The first gate electrode is electrically connected to the gate wiring. The first source electrode or the first drain electrode is electrically connected to the second gate electrode. The second source electrode or the second drain electrode has a function of supplying power for driving the light-emitting element. .

[0017] (10) The semiconductor device according to one aspect of the present invention includes one or more of a keyboard, a hardware button, a pointing device, a touch sensor, an illuminance sensor, an imaging device, a voice input device, a viewpoint input device, a posture detection device, and the above input / output panel.

[0018] (11) The driving method of the input / output panel according to one aspect of the present invention includes a gate wiring, a signal line, and pixels . The pixel is electrically connected to the gate wiring and the signal line. The driving method of the input / output panel The law states that during the period in which a selection signal is supplied to the gate wiring, a video signal is supplied to the signal line. It detects objects that are close to the gate wiring.

[0019] (12) A method for driving an input / output panel according to one aspect of the present invention includes gate wiring, signal lines, and pixels. The pixels are electrically connected to gate wiring and signal lines, and each pixel includes a display element. A method for driving an input / output panel, comprising a first period to a third period. In this process, a predetermined voltage is supplied to the signal line, and during the second period, all gate wiring is selected signal A selection signal is supplied to each of the gate wirings in a predetermined order so that a number is supplied. The system detects an object adjacent to the gate wiring, and in the third period, all gate wiring is selected. Select signals are supplied to the gate wiring in a predetermined order so that the numbers are supplied, and the video signal is signaled. To supply power to the line.

[0020] (13) A method for driving an input / output panel according to one aspect of the present invention includes gate wiring, signal lines, and pixels. The pixels are electrically connected to gate wiring and signal lines, and each pixel includes a display element. A method for driving an input / output panel, comprising a first period to a third period. In this process, a predetermined voltage is supplied to the signal line, and during the second period, all gate wiring is selected signal To supply the numbers, a selection signal is supplied to each adjacent gate wiring in a predetermined order. The system detects objects adjacent to a group of adjacent gate wirings, and in the third period, all gates Select signals are supplied to the gate wiring in a predetermined order so that the gate wiring is supplied with selection signals. The video signal is supplied to the signal line.

[0021] (14) A method for driving an input / output panel according to one aspect of the present invention, comprising a first display area and a second display area The second display area is adjacent to the first display area, and the first display area is a group of games The second display area is equipped with gate wiring and signal lines, and the second display area is equipped with another group of gate wiring and signal lines. A method for driving an input / output panel, comprising a first period to a sixth period, wherein during the first period... Then, a predetermined voltage is supplied to the signal line, and in the second period, a selection signal is sent to a group of gate wires. It supplies a signal, detects an object to be detected that is adjacent to a group of gate wiring, and in the third period, the group The gate wiring is supplied with a selection signal by a group of gate wirings in a predetermined order. Select and supply them one by one, supply the video signal to the signal line, and during the fourth period, a predetermined voltage It supplies a signal to the signal line, and in the fifth period, it supplies a selection signal to another group of gate wiring, and the other The system detects an object adjacent to a group of gate wiring, and in the sixth period, another group of gates The gate wiring is supplied with a selection signal, and the selection signal is transmitted in a predetermined order from another group of gate wiring. Select and supply them one by one, and supply the video signal to the signal line.

[0022] In this specification, the source and drain of a transistor are defined as the polarity of the transistor and each The name changes depending on the potential applied to the terminals. Generally, n-channel In a transistor, the terminal to which a low potential is applied is called the source, and the terminal to which a high potential is applied is called the source. The terminal that is exposed to low potential is called the drain. Also, in p-channel transistors, when a low potential is applied... The terminal to which the current is applied is called the drain, and the terminal to which a high potential is applied is called the source. So, for convenience, let's assume that the source and drain are fixed, and the transistor's connections Although the relationship is sometimes explained, in reality, the source and drain are called according to the potential relationship described above. The way they move is reversed.

[0023] In this specification, the source of a transistor refers to the source region which is part of the semiconductor film, or This refers to the source electrode connected to the semiconductor film mentioned above. Similarly, the drain of a transistor is , a drain region which is part of the semiconductor film, or a drain electrical current connected to the semiconductor film It means pole. Also, "gate" means gate electrode.

[0024] In this specification, the state in which transistors are connected in series means, for example, the first transistor Only one of the sources or drains of the second transistor is connected to the source or drain of the second transistor. This means that only one side of the transistor is connected. Also, when transistors are connected in parallel... The state in which one of the sources or drains of the first transistor is connected to the second transistor Connected to either the source or drain of the first transistor, and the source or drain of the first transistor This means that the other end of one transistor is connected to the other end of the source or drain of the second transistor. do.

[0025] In this specification, "connection" means an electrical connection, where current, voltage, or potential is supplied. This corresponds to a state where power can be supplied or transmitted. Therefore, a connected state means that power is directly connected. This does not necessarily refer to a state in which current, voltage, or potential is available or available for transmission. To enable transmission, the circuit elements such as wires, resistors, diodes, and transistors are connected. This category also includes states where devices are indirectly connected.

[0026] In this specification, when components that are independent in the circuit diagram are connected to each other, However, in reality, for example, when part of the wiring functions as an electrode, one conductive film can be multiple In some cases, the components may also possess the functions of multiple components. In this specification, connection means such as This category also includes cases where a single conductive film possesses the functions of multiple components.

[0027] Furthermore, in this specification, if either the first electrode or the second electrode of the transistor is the source One electrode points to the drain electrode. [Effects of the Invention]

[0028] According to one aspect of the present invention, a novel input / output panel with superior convenience or reliability can be provided. Alternatively, a novel input / output panel or a novel semiconductor device can be provided.

[0029] Furthermore, the description of these effects does not preclude the existence of other effects. The embodiment does not necessarily have to have all of these effects. Furthermore, other effects are... This will become clear from the description in the specification, drawings, claims, etc., and the specification, drawings Furthermore, it is possible to extract other effects from the descriptions in the claims and other documents. [Brief explanation of the drawing]

[0030] [Figure 1] A circuit diagram illustrating the configuration of the input / output panel according to the embodiment. [Figure 2] A plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 3] A cross-sectional view and a plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 4] A cross-sectional view and a plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 5] A schematic diagram showing the configuration of a mutual capacitance type touch sensor according to an embodiment, a schematic diagram of input / output waveforms, and an example of the configuration of a touch sensor having multiple capacitors arranged in a matrix. [Figure 6]A cross-sectional view and a plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 7] A cross-sectional view and a plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 8] A cross-sectional view and a plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 9] A block diagram of the wiring and a timing chart of the input / output waveforms according to the embodiment. [Figure 10] Timing chart of input / output waveforms according to the embodiment. [Figure 11] Timing chart of input / output waveforms according to the embodiment. [Figure 12] Timing chart of input / output waveforms according to the embodiment. [Figure 13] Timing chart of input / output waveforms according to the embodiment. [Figure 14] A block diagram of the wiring of the touch panel according to the embodiment. [Figure 15] A cross-sectional view and a plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 16] A cross-sectional view and a plan view illustrating the configuration of the input / output panel according to the embodiment. [Figure 17] A cross-sectional view and a circuit diagram illustrating the configuration of the input / output panel according to the embodiment. [Figure 18] A cross-sectional view illustrating the configuration of the input / output panel according to the embodiment. [Figure 19] A diagram illustrating an electronic device having an input / output panel according to an embodiment. [Figure 20] A diagram illustrating an electronic device having an input / output panel according to an embodiment. [Figure 21] A diagram illustrating one transistor configuration that can be used in an input / output panel according to an embodiment. [Figure 22] A diagram illustrating one transistor configuration that can be used in an input / output panel according to an embodiment. [Figure 23] A diagram illustrating an electronic device having an input / output panel according to an embodiment. [Figure 24] Circuit diagram of a touch sensor according to an embodiment. [Figure 25] Block diagram and timing chart diagram of a display device according to an embodiment. [Figure 26] A diagram illustrating the operation of a display device and touch sensor according to an embodiment. [Figure 27] A diagram illustrating the operation of a display device and touch sensor according to an embodiment. [Modes for carrying out the invention]

[0031] Embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following description. Without departing from the spirit and scope of the present invention, its form and details may be changed in various ways. Those skilled in the art will readily understand that further modifications are possible. Therefore, the present invention can be implemented in the following forms. It is not to be interpreted solely in terms of the content of the description of the state.

[0032] In the configuration of the invention described below, the same part or part having a similar function is included. The same reference numerals are used consistently across different drawings, and explanations of their repetition are omitted. When referring to the function of [this], the hatch pattern is the same, and sometimes no specific symbol is assigned.

[0033] In each figure described herein, the size, layer thickness, or area of ​​each component is clearly indicated. It may be exaggerated for clarity. Therefore, it is not necessarily limited to that scale. .

[0034] Furthermore, in this specification, ordinal numbers such as "the first," "the second," etc., are used to avoid confusion of constituent elements. This is meant to be noticed, and is not limited to a specific number.

[0035] In this specification and elsewhere, "metal oxide" refers to a broad term for metals. It is an oxide. Metal oxides are oxide insulators and oxide conductors (including transparent oxide conductors). Oxide semiconductors (also called OS) They are classified into the following categories. For example, when a metal oxide is used in the active layer of a transistor, the metal acid These oxides are sometimes called oxide semiconductors. In other words, metal oxides have amplification and rectification effects. And if it has at least one switching action, the metal oxide is a metal oxide semi A conductor (metal oxide semiconductor), abbreviated as OS. This is possible. Also, when referred to as OS FET, it refers to metal oxide or oxide semiconductor. It can be rephrased as a transistor with a body.

[0036] Furthermore, in this specification, metal oxides containing nitrogen are also referred to as metal oxides (metal oxi They are sometimes collectively referred to as (de) metal oxides (met It may also be called al oxynitride.

[0037] Furthermore, in this specification, etc., CAAC (c-axis aligned crystal ), and CAC (cloud-aligned composite) are sometimes used. Yes. Note that CAAC represents an example of a crystal structure, and CAC represents an example of a function or material composition. It represents.

[0038] Furthermore, in this specification, CAC-OS or CAC-metal oxide means Some parts of the material have conductive properties, and some parts have insulating properties, and the material as a whole has It has semiconductor properties. Note that it is either CAC-OS or CAC-metal oxid When e is used in the active layer of a transistor, its conductive function is due to the electrons that act as carriers (and The function of (holes) is to allow electrons to flow, while the insulating function is to prevent the flow of electrons, which act as carriers. By making the conductive and insulating functions work complementaryly, a switch is created. The function to turn it on / off is CAC-OS or CAC-metal It can be applied to oxides such as CAC-OS or CAC-metal oxid In e, by separating each function, it is possible to maximize the performance of both functions. Cut.

[0039] Furthermore, in this specification, CAC-OS or CAC-metal oxide is defined as a conductive It has an electrically conductive region and an insulating region. The conductive region has the conductive function described above, and the insulating region The region has the insulating function described above. Furthermore, within the material, there are conductive regions and insulating regions. The regions may be separated at the nanoparticle level. Furthermore, there are conductive regions and insulating regions. These can be unevenly distributed within the material. Also, the conductive areas appear blurred around the edges, creating a cloudy appearance. They may sometimes be observed connected in a specific way.

[0040] Furthermore, in CAC-OS or CAC-metal oxide, the conductive region and the insulating region The marginal region is defined as being between 0.5 nm and 10 nm, preferably between 0.5 nm and 3 nm. These particles may be dispersed in the material at the following sizes.

[0041] Furthermore, CAC-OS or CAC-metal oxide has different band gaps. It is composed of the following components. For example, CAC-OS or CAC-metal oxi de consists of a component with a wide gap due to the insulating region and a component with a wide gap due to the conductive region. It consists of a component having a low gap. In this configuration, when the carrier is flowing... In components with a narrow gap, the carrier mainly flows. A component having a wide gap acts complementaryly with a component having a narrow gap. In conjunction with the components, carriers also flow to components with a wide gap. Therefore, the above C AC-OS or CAC-metal oxide is used in the channel region of the transistor. In this case, the transistor has a high current driving force in the ON state, that is, a large ON current, and High field-effect mobility can be obtained.

[0042] In other words, CAC-OS or CAC-metal oxide is a matrix composite material. (matrix composite), or metal matrix composite (metal It can also be called a matrix composite.

[0043] Embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following description. Without departing from the spirit and scope of the present invention, its form and details may be modified in various ways. It will be easily understood by those skilled in the art to obtain this. Therefore, the present invention is as shown in the embodiments below. The description is not to be interpreted as being limited to the stated content. The same reference numeral is used in common across different drawings for parts that are identical or have similar functions. I will omit the explanation of that repetition.

[0044] (Embodiment 1) In this embodiment, the input / output panel of one aspect of the present invention can be applied to the detection of an object This document describes an example configuration of a sensor capable of detecting proximity or contact (hereinafter referred to as a touch sensor). Furthermore, an input / output panel according to one aspect of the present invention has a display element.

[0045] One aspect of the present invention is a touch sensor that uses a capacitive method. Capacitive touch sensor Typical examples include surface capacitance and projected capacitance. Capacitive capacitance types can be broadly categorized into self-capacitance types and mutual-capacitance types, mainly based on differences in their driving methods. Yes. Here, using the mutual capacitance method, it is possible to detect multiple points simultaneously (multi-point detection (multi This is preferable because it allows for touch (also known as touch).

[0046] An input / output panel according to one aspect of the present invention has a capacitive sensor. The device has a pair of electrodes, and a capacitance is formed between the pair of electrodes. One end is a sensor electrode, and this sensor electrode is connected to the gate wiring. The wiring has the function of supplying selection signals.

[0047] Of the pair of electrodes mentioned above, the other one intersects with the gate wiring.

[0048] In one aspect of the present invention, for example, the other electrode is separated from the electrode of the display element. This will be explained using Figure 1(A). In addition, in one aspect of the present invention, the other electrode is a display element It also serves as the child's electrode. This configuration will be explained using Figure 1(B).

[0049] Figures 1(A) and 1(B) are circuit diagrams of the pixel section of an input / output panel according to one embodiment of the present invention. An input / output panel according to one aspect of the present invention has a display element, the display element comprising a layer containing a liquid crystal material. Furthermore, an input / output panel according to one aspect of the present invention includes a pixel section. The pixel section comprises a liquid crystal element 35 13, the capacitance unit 3514, the capacitive sensor unit 3515, the gate electrode 3516, Gate wiring 3517, contact area 3518, source wiring 3519, and transistor It has a 3521 and a sensor electrode 3529. The pixel part also has a common electrode 3522. It includes a pixel electrode 3523. The common electrode 3522 is for driving the liquid crystal element 3513. A common potential is supplied. The pixel electrode 3523 is electrically connected to the transistor 3521. Transistor 3521 receives a signal from source wiring 3519 based on the selection signal. The signal can be supplied to the pixel electrode 3523. Note that transistor 3521 is selected. It is also called a signal line. Furthermore, source wiring 3519 is simply called a signal line.

[0050] In the contact area 3518, the sensor electrode 3529 has electrical connections with the gate wiring 3517. It is connected to the gate electrode 3516. Also, the gate electrode 3516 is electrically connected to the gate wiring 3517. In other words, the gate wiring 3517 has the function of auxiliary wiring for the sensor electrode 3529, It has the function of supplying a selection signal to drive transistor 3521.

[0051] The common electrode 3522 has a region parallel to the source wiring 3519. (See Figure 1(A) and) In Figure 1(B), the row direction is indicated by arrow R, and the column direction is indicated by arrow C. ru.

[0052] The liquid crystal element 3513 includes a common electrode 3522 and a pixel electrode 3523. Using the pole 3522 and the pixel electrode 3523, the electric field in the layer containing the liquid crystal material is changed. It is possible.

[0053] Furthermore, the pixel section includes a capacitance section 3514. The capacitance section 3514 can store electric charge. This allows for the period until gate wiring 3517 is selected (one frame period). Specifically, The voltage between the contact electrode 3522 and the pixel electrode 3523 can be maintained. Note that the capacitance section 3514 Of the two electrodes provided, the electrode that is not electrically connected to the pixel electrode 3523 is used Apply potential. Note that in this specification, the illustration of the capacitance section 3514 may be omitted. .

[0054] Here, the input / output panel described using the circuit diagram in Figure 1(A) has a sensor electrode 3527. The sensor electrode 3527 is separated from the common electrode 3522.

[0055] The capacitive sensor unit 3515 includes sensor electrodes 3529 and 3527. A touch sensor according to one aspect of the present invention, when a finger, stylus pen, etc. approaches, the sensor power The change in capacitance value between electrode 3529 and sensor electrode 3527 can be read. Electrode 3527 is supplied with a common potential or a floating potential.

[0056] The sensor electrode 3527 has a region parallel to the source wiring 3519. Auxiliary wiring may be provided to 3527.

[0057] On the other hand, the input / output panel described using the circuit diagram in Figure 1(B) has a sensor electrode 3527. The absence of this feature is what distinguishes it from the input / output panel explained using Figure 1(A). Capacitive Sensor Unit 3515 comprises a sensor electrode 3529 and a common electrode 3522. One embodiment of the present invention The touch sensor detects when a finger or stylus pen approaches, and the sensor electrode 3529 and common electrode The change in capacitance value between poles 3522 can be read.

[0058] Figure 2(A) is a plan view in which the wiring and other structures are superimposed on the circuit diagram shown in Figure 1(A). Figure B) is a plan view in which the wiring and other structural elements are superimposed on the circuit diagram shown in Figure 1(B). For convenience, these floor plans may contain elements that differ from the actual dimensions and shapes. For the sake of explanation, some of the wiring and transistor 3521 are shown by symbols. (See Figure 2) (A), In Figure 2(B), at a position that does not overlap with the common electrode 3522 or the pixel electrode 3523. Transistor 3521 is shown, but transistor 3521 can be replaced with common electrode 3522 or pixel It may also be placed in a position that overlaps with electrode 3523. The same arrangement can be used in other plan views. ru.

[0059] The input / output panel is explained using Figure 2(A) and the input / output panel is explained using Figure 2(B). The components are gate wiring 3517, common electrode 3522, pixel electrode 3523, and sensor electrode. It includes 3529 and a contact area 3518. Note that in all figures, the capacitance part The illustration of 3514 is omitted. Also, the input / output panel explained using Figure 2(A) is It is equipped with a sensor electrode 3527.

[0060] The input / output panel is explained using Figure 2(A) and the input / output panel is explained using Figure 2(B). In all cases, the common electrode 3522 is connected to the gate wiring 3517 and the sensor electrode 3529. It has a region sandwiched in between.

[0061] The input / output panel is explained using Figure 2(A) and the input / output panel is explained using Figure 2(B). In both cases, the pixel electrode 3523 and the sensor electrode 3529 contain the same material. This allows the pixel electrode 3523 and the sensor electrode 3529 to be formed in the same process. It can be done. Also, the input / output panel explained using Figure 2(A) has a common electrode 3522 and a sensor The electrodes 3527 all contain the same material. This allows the common electrode 3522 and the center electrode to be made of the same material. The sensor electrode 3527 can be formed in the same process.

[0062] Furthermore, auxiliary wiring can be provided on the common electrode 3522. This reduces the wiring resistance. It is possible to do so. Alternatively, the pixels can be miniaturized.

[0063] Furthermore, the electrodes to which a common potential or floating potential is applied overlap with the electrodes to which the common potential or floating potential is applied. - Wiring 3519 may be placed. This allows, for example, a sensor electrode or a detected object ( Specifically, it can reduce the effects of noise originating from fingers, etc. For example, source wiring. This can reduce the impact on the video signal supplied by 3519.

[0064] The input / output panel of the present invention is sufficient if it has the circuit shown in Figure 1(A) or Figure 1(B). The formation method does not have to be the configuration described above. For example, the gate wiring 3 is arranged in order from the substrate. 517, followed by the sensor electrode 3529, and then the common electrode 3522 may also be formed. Furthermore, the pixel electrode 3523 may be formed from a different material than the sensor electrode 3529. Furthermore, the common electrode 3522 may be formed from a different material than the sensor electrode 3527. .

[0065] 《Example Configuration 1.》 The input / output panel, which will be explained using the circuit diagram shown in Figure 1(A), has a sensor electrode 3527. The sensor electrode 3527 is separated from the common electrode 3522. As an example, input / output... The structure of a portion of the pixels of Nell 3551 is explained using a schematic cross-sectional diagram (Figure 3(A)). (See reference). Note that the input / output panel 3551 has a layer 3524 containing liquid crystal material. The 3551 operates in FFS (Fringe Field Switching) mode. It has a liquid crystal element.

[0066] The input / output panel 3551 consists of a transistor 3521, a common electrode 3522, and a pixel electrode 35 The device comprises 23, a layer 3524 containing liquid crystal material, and a color filter 3525 (Figure 3(A (See reference). Pixel electrode 3523 includes pixel electrode 3523A and pixel electrode 3523B. Pixel electrode 3523B is electrically connected to pixel electrode 3523A. Contains liquid crystal material. Layer 3524 is sandwiched between alignment layers 3561 and 3562. Pixel electrode 35 23A and pixel electrode 3523B are the source electrode or drain of transistor 3521. It is electrically connected to one of the electrodes.

[0067] Pixel electrodes 3523A and 3523B are part of the pixel electrode. Pixel electrode 352 3A and pixel electrode 3523B are provided on the common electrode 3522 via an insulating layer. The crystal element comprises a pair of electrodes. Pixel electrode 3523A and pixel electrode 3523B are a pair of electrodes. It is one of the electrodes, and the common electrode 3522 is the other of the pair of electrodes. Note that the pair of liquid crystal elements By applying a voltage between the electrodes, the distribution of the liquid crystal material contained in layer 3524 containing the liquid crystal material is controlled. The direction can be controlled.

[0068] The gate wiring 3517 is made of the same material as the gate electrode 3516 of transistor 3521. Includes material. This allows the gate wiring 3517 and gate electrode 3516 to be constructed in the same process. It can be formed. Also, the gate wiring 3517 and gate electrode 3516 are electrically It can be connected. Also, in the contact area 3518, the gate wiring 3517 can be connected. It can be electrically connected to electrode 3529.

[0069] The sensor electrode 3527 contains the same material as the common electrode 3522. The sensor electrode 3527 and the common electrode 3522 can be formed in the same process.

[0070] The input / output panel 3551 shown in Figure 3(A) includes sensor electrode 3529 and sensor electrode 352 It includes 7. The electric field formed between sensor electrode 3529 and sensor electrode 3527 is shown by a dashed line. This is shown in 3563. Also, for example, how a conductive object to be detected 3564 crosses this electric field. The child is shown in the diagram. Note that sensor electrodes 3529 and 3527 are shown in Figure 1(A). This corresponds to the capacitive sensor unit 3515 of the input / output panel, which will be explained using a circuit diagram.

[0071] The layer 3524 containing the liquid crystal material is sandwiched between substrate 3543 and substrate 3541.

[0072] Figure 3(B) schematically shows the wiring and other structures of the input / output panel 3551 shown in Figure 3(A). This is a view drawing.

[0073] Furthermore, the space between Am and An, and between Bm and Bn, shown in each cross-sectional diagram of this specification, is the plane This corresponds to the relationship between Am and An, and between Bm and Bn, as shown in the diagram. However, m and n are both It is a natural number.

[0074] Transistor 3521 is positioned to overlap with the common electrode 3522 and the pixel electrode 3523. This is possible. Note that the gate electrode 3516 of transistor 3521 is connected to gate wiring 351 It is electrically connected to 7. Also, the source electrode and drain of transistor 3521. The electrodes contain the same material as the source wiring 3519. This allows the source electrodes to be made of the same material as the source wiring 3519. The rain electrode and source wiring 3519 can be formed in the same process. The drain electrode or source wire 3519 can be electrically connected. In other planar diagrams as well, transistors are placed in conjunction with common electrodes or pixel electrodes. It is possible.

[0075] Furthermore, as shown in Embodiment 7, the transistor 3521 can be a bottom gate type, or a top gate type. It can be either a single-gate type or a type with two gate electrodes.

[0076] A portion of the electric field formed between sensor electrode 3529 and sensor electrode 3527 is shown by the dashed line 35 As shown in 63 (see Figure 3(B)). A touch sensor according to one aspect of the present invention is a touch sensor that crosses this electric field. The detection object 3564 can be detected. Note that the sensor electrode 3529 and sensor electrode 3 527 corresponds to the pair of electrodes of the capacitive sensor unit 3515 (see Figure 1(A)).

[0077] 《Example Configuration 2.》 The input / output panel, which will be explained using the circuit diagram shown in Figure 1(B), has a common electrode 3522 and a sensor It is equipped with a sub-electrode 3529. As an example, the structure of some pixels of the input / output panel 3552 is roughly This will be explained using a simplified cross-sectional diagram (see Figure 4(A)). Note that the input / output panel 3552 is It has a layer 3524 containing liquid crystal material. The input / output panel 3552 is a liquid crystal panel that operates in FFS mode. It has a crystalline element.

[0078] The input / output panel 3552 shown in Figure 4(A) does not have a sensor electrode 3527, unlike Figure 3( This is different from the input / output panel 3551 shown in A).

[0079] The input / output panel 3552 shown in Figure 4(A) includes a sensor electrode 3529 and a common electrode 3522. It includes the electric field formed between the sensor electrode 3529 and the common electrode 3522, indicated by the dashed line 35. As shown in 63. Also, for example, the way in which a conductive object to be detected 3564 crosses this electric field. This is illustrated. Note that all other parts are the parts of the input / output panel 3551 shown in Figure 3(A). This is common to the above. The sensor electrode 3529 and the common electrode 3522 are shown in Figure 1(B). The pair of electrodes of the capacitive sensor unit 3515 of the input / output panel, which will be explained using a circuit diagram, It corresponds to.

[0080] Figure 4(B) schematically shows the wiring and other structures of the input / output panel 3552 shown in Figure 4(A). This is a view drawing.

[0081] A portion of the electric field formed between the sensor electrode 3529 and the common electrode 3522 is shown by the dashed line 356. As shown in 3 (see Figure 4(B)). A touch sensor according to one aspect of the present invention crosses this electric field. It can detect the intelligent entity 3564. Note that the sensor electrode 3529 and common electrode 352 2 corresponds to the pair of electrodes of the capacitive sensor unit 3515 (see Figure 1(B)).

[0082] [Examples of sensor detection methods] Figures 5(A) and (B) show schematic diagrams illustrating the configuration of a mutual capacitive touch sensor and input / output waveforms. This is a schematic diagram. The touch sensor has a pair of electrodes, and a capacitance is formed between them. An input voltage is applied to one of the pair of electrodes. A current flows through the other electrode. It includes a current detection circuit that detects (or the potential of the other electrode).

[0083] For example, as shown in Figure 5(A), when a square wave is used as the input voltage waveform, the output current wave A waveform with a sharp peak is detected.

[0084] Furthermore, as shown in Figure 5(B), when a conductive object to be detected is in close proximity to or in contact with the capacitance... As a result, the capacitance between the electrodes decreases, and consequently, the output current decreases.

[0085] Thus, a touch sensor according to one aspect of the present invention provides an output current (or potential) in response to an input voltage. By using the change in (), a change in capacity can be detected to detect the proximity or contact of the object being detected. It is possible to know.

[0086] [Example of touch sensor configuration] Figure 5(C) shows an example configuration of a touch sensor with multiple capacities arranged in a matrix. vinegar.

[0087] The touch sensor consists of multiple wirings 3510 extending in the X direction (horizontal direction of the paper), and these multiple It has multiple wirings 3511 that intersect with the wiring and extend in the Y direction (vertical direction of the paper). A capacitance 3503 is formed between the two wires. For example, input / output panel 3551 (Figure 3) In A) and (B), the wiring 3510 is connected to the gate wiring 3517 and the sensor electrode 352 9 corresponds to and, wiring 3511 corresponds to sensor electrode 3527.

[0088] Furthermore, the wiring 3510 extending in the X direction has an input voltage or common potential (ground potential, reference potential). Either of the following (including the position) is input. This potential is, for example, a square wave input. It can be supplied from the voltage output circuit 3501. Also, wiring 35 extends in the Y direction. In 11, the current sensing circuit 3502 (e.g., source meter, sense amplifier, etc.) is electrically... It is connected to and can detect the current (or potential) flowing through the wiring.

[0089] The touch sensor receives input voltages sequentially to multiple wires 3510 extending in the X direction. The system scans in such a manner and detects changes in the current (or potential) flowing through the wiring 3511 extending in the Y direction. By doing so, it becomes possible to detect (sens) objects in two dimensions.

[0090] (Embodiment 2) This embodiment describes an embodiment that can be applied to an input / output panel according to one aspect of the present invention. A different configuration example from 1 will be described. Furthermore, the input / output panel of one aspect of the present invention includes a display element. The input / output panel shown in this embodiment has an FFS mode having a layer containing liquid crystal material. It has a liquid crystal element that operates in that manner.

[0091] 《Example Configuration 3.》 The input / output panel, which will be explained using the circuit diagram shown in Figure 1(B), has a common electrode 3522 and a sensor It is equipped with a sub-electrode 3529. As an example, the structure of some pixels of the input / output panel 3553 is roughly This will be explained using a simplified cross-sectional diagram (see Figure 6(A)).

[0092] The input / output panel 3553 includes a transistor 3521, a common electrode, a pixel electrode 3523, It is equipped with (see Figure 6(A)). The common electrode consists of common electrode 3522A and common electrode 3522 Includes B. Common electrode 3522B is electrically connected to common electrode 3522A. Pixel Electrode 3523 contains the same material as sensor electrode 3529. This allows the pixel electrode The electrode 3523 and the sensor electrode 3529 can be formed in the same process.

[0093] Figure 6(B) schematically shows the wiring and other structures of the input / output panel 3553 shown in Figure 6(A). This is a view drawing.

[0094] A portion of the electric field formed between the sensor electrode 3529 and the common electrode 3522A is shown by the dashed line 35 As shown in 63 (see Figure 6(B)). A touch sensor according to one aspect of the present invention is a touch sensor that crosses this electric field. The detection element 3564 can be detected. In addition, the common electrode 3522B is provided with an opening. This allows the electric field that the object being detected easily crosses to be controlled by the sensor electrode 3529 and the common electric field. It can be formed between electrodes 3522A. Note that sensor electrode 3529 and common electrode 3 522A corresponds to the pair of electrodes of the capacitive sensor unit 3515 (see Figure 1(B)). .

[0095] For other configurations of input / output panel 3553, refer to the configuration of input / output panel 3552. can.

[0096] 《Configuration Example 4.》 The input / output panel, which will be explained using the circuit diagram shown in Figure 1(B), has a common electrode 3522 and a sensor It is equipped with a sub-electrode 3529. As an example, the structure of some pixels of the input / output panel 3554 is roughly This will be explained using a simplified cross-sectional diagram (see Figure 7(A)).

[0097] The input / output panel 3554 includes a transistor 3521, a common electrode, a pixel electrode 3523, It is equipped with (see Figure 7(A)). The common electrode consists of common electrode 3522A and common electrode 3522 Includes B. Common electrode 3522B is electrically connected to common electrode 3522A. Pixel Electrode 3523 contains the same material as sensor electrode 3529. This allows the pixel electrode The electrode 3523 and the sensor electrode 3529 can be formed in the same process.

[0098] Figure 7(B) schematically shows the wiring and other structures of the input / output panel 3554 shown in Figure 7(A). This is a view drawing.

[0099] A portion of the electric field formed between the sensor electrode 3529 and the common electrode 3522A is shown by the dashed line 35 As shown in 63 (see Figure 7(B)). A touch sensor according to one aspect of the present invention is provided that the electric field is crossed by It can detect the detection object 3564. In addition, the common electrode 3522B has an opening, The sensor electrode 3529 has a region that overlaps with the opening. Furthermore, the common electrode 3522A and The sensor electrode 3529 corresponds to the pair of electrodes of the capacitive sensor unit 3515 (Figure 1). See B).

[0100] For other configurations of input / output panel 3554, refer to the configuration of input / output panel 3552. can.

[0101] 《Example Configuration 5.》 The input / output panel, which will be explained using the circuit diagram shown in Figure 1(A), consists of sensor electrode 3527 and It is equipped with a sensor electrode 3529. As an example, the structure of a part of the pixels of the input / output panel 3555 is as follows: This will be explained using a schematic cross-sectional diagram (see Figure 8(A)).

[0102] The input / output panel 3555 includes a transistor 3521, a common electrode, and a sensor electrode 3527. The common electrode is the common electrode 3522A. and includes a common electrode 3522B. The common electrode 3522B is electrically connected to the common electrode 3522A. It is connected to the common electrode. The common electrode contains the same material as the sensor electrode 3527. This allows the common electrode and the sensor electrode 3527 to be formed in the same process.

[0103] Figure 8(B) schematically shows the wiring and other structures of the input / output panel 3555 shown in Figure 8(A). This is a view drawing.

[0104] A portion of the electric field formed between sensor electrode 3529 and sensor electrode 3527 is shown by the dashed line 35 As shown in 63 (see Figure 8(B)). A touch sensor according to one aspect of the present invention is a touch sensor that crosses this electric field. The detection element 3564 can be detected. In addition, the common electrode 3522B is provided with an opening. This allows the electric field that the object being detected easily crosses to be controlled by the sensor electrode 3529 and the sensor. It can be formed between electrodes 3527. Note that sensor electrode 3529 and sensor electrode 3527 corresponds to the pair of electrodes of the capacitive sensor unit 3515 (see Figure 1(A)). .

[0105] For other configurations of input / output panel 3555, refer to the configuration of input / output panel 3551. can.

[0106] (Embodiment 3) An example of a method for driving a touch panel according to one aspect of the present invention will be described below.

[0107] Figure 9(A) is a block diagram showing the configuration of a mutual capacitive touch sensor. The touch sensor has a pulse voltage output circuit 3501 and a current detection circuit 3502. Let X1-Xn be the wires 3510 to which the pulse voltage is applied, and for example, use n wires. This shows that the wiring 3511 that detects changes in current is denoted as Y1-Ym, and each of the m wirings is shown. The lines illustrate the concept. Figure 9(A) shows multiple wires 3510 and multiple wires 351 The superposition of 1 and 3503 indicates the formation of multiple capacitances 3503. Note that wiring 3510 The functions of wiring 3511 and the other wiring may be interchangeable.

[0108] The pulse voltage output circuit 3501 is used to sequentially apply pulse voltages to the X1-Xn wiring. This is a circuit. When a pulse voltage is applied to the X1-Xn wiring, capacitance 3503 is formed. An electric field is generated between wiring 3510 and wiring 3511. This electric field generated between the wiring can be shielded, etc. By utilizing the fact that a change in the mutual capacitance of the capacity 3503 is created, the proximity of the detected object, and It can detect contact.

[0109] The current detection circuit 3502 detects changes in the mutual capacitance of capacitor 3503 in the wiring Y1-Ym. This is a circuit for detecting changes in current. In the wiring Y1-Ym, the proximity of the object to be detected, If there is no contact, the detected current value does not change, but if the object being detected is nearby, or if there is contact When contact reduces the mutual capacitance, a change in the current value is detected. This can be done using an integrating circuit or similar.

[0110] Next, Figure 9(B) shows the input and output waves in the mutual capacitance type touch sensor shown in Figure 9(A). The timing chart of the shapes is shown. In Figure 9(B), the detected objects in each matrix over a 1-frame period The detection of the object to be detected will be performed. Also, in Figure 9(B), when no object to be detected (non-touch) There are two cases: period 3601 and period 3602 when an object to be detected is detected (touch). It is shown here. Furthermore, for the Y1-Ym wiring, the voltage value corresponding to the detected current value is shown. The waveform shown is as follows.

[0111] A pulse voltage is applied sequentially to the wiring X1-Xn, and Y1-Y according to the pulse voltage. The waveform changes in the m wiring. If there is no proximity or contact with the detected object, X1-Xn The waveforms of Y1-Ym change uniformly in response to changes in the wiring voltage. On the other hand, when the object to be detected is in close proximity... At the point of contact, the current value decreases, and therefore the waveform of the corresponding voltage value also changes. .

[0112] The wiring 3510 from X1 to Xn in the block diagram shown in Figure 9(A) is shown in other embodiments. This corresponds to gate wiring 3517 of the input / output panel. Specifically, input / output panel 3551 This corresponds to the gate wiring 3517 of any input / output panel 3555. To explain the coordinates of the capacitance 3503 shown in 9(A) and their arrangement with each wiring, X1-Xn The wiring 3510 is arranged in rows X1-Xn, and the wiring 3511 for Y1-Ym is It shall be placed in columns Y1-Ym.

[0113] The timing chart shown in Figure 10 shows the power supplied to each wiring 3510 in rows X1-Xn. This shows the input waveform of the pressure. Signal 3611 is a signal for driving the display element. Signal 3612 is a signal for driving the touch sensor. This is one aspect of the present invention. The input / output panel can carry both signals through gate wiring 3517, for example, Signals 3611 and 3612 in the same row are connected to the same gate wiring 35 formed in the row. It flows to 17. That is, signals 3611 and 3612 are as shown in Figure 1(A) or Figure 1(B). This can be described as a selection signal input to gate wiring 3517 in ).

[0114] The timing chart shown in Figure 10 shows that the common electrode 3522 is separated from the sensor electrode 3527. A method for driving a separated input / output panel, for example, an example of a method for driving input / output panel 3551 This shows the change in voltage across the gate wiring. The X1-Xn wiring is in the display element. This corresponds to the common electrode 3522, and in the case of a touch sensor, it corresponds to the sensor electrode 3527. In this structure, the detection of the object to be detected by the touch sensor and the writing to the display element are It happens simultaneously. In other words, during the period when the selection signal is input to the gate wiring, the video signal is sent to the gate. It inputs into the gate wiring and detects objects that are close to the gate wiring.

[0115] In this case, the period during which a video signal is written to a display element at a certain coordinate. The period between 3621 and the next identical period 3621 becomes the display period 3622. Also, touch sensor The period 3623 during which the detected object is detected coincides with period 3621, as described above. The repeating cycle of 3621 results in a frame duration of 3624.

[0116] The timing chart shown in Figure 11 shows that the common electrode 3522 is on one side of the liquid crystal element 3513. A method for driving an input / output panel that serves as both an electrode and a sensor electrode, for example, input / output panel 3552 An example of a driving method is shown. The wiring for X1-Xn is common to both the display element and the touch sensor. This corresponds to electrode 3522. In this structure, the detection of the object to be detected by the touch sensor and the display Writing to the display element is performed with a time delay.

[0117] In this case, crosstalk between the display element and the touch sensor is avoided at a certain coordinate of the display element. Therefore, the period 3621 for writing the video signal to the display element is performed after all rows have elapsed. A period 3625 is set for writing a black signal. That is, period 3621 and period 362 The period between 5 and 3622 is the display period. After the entire duration of period 3625 has elapsed, the touch sensor A period 3623 for detecting the object to be detected is provided for all rows. (Figure 11 shows the touch sensor) During the period 3623 in which the object to be detected is detected by the touch sensor, the gate voltage rises. The waveform differences are being evaluated, but these waveforms change depending on the potential of the pixel electrode 3523. To reduce the impact on the detection of the above, during period 3623, the source wiring 3519 will have a black signal A signal is supplied to write the number. Thus, one frame period of 3624 ends. After that, the writing of the video signal to the display element starts again.

[0118] Before sensing, the above black signal is written, resulting in the wiring 35 shown in Figure 5(C). The potential between 10 and wiring 3511 is less affected by the potential of pixel electrode 3523, and Accurate sensing is possible. Instead of the black signal mentioned above, a signal of a predetermined chromaticity is used. Alternatively, to write a black signal, a predetermined voltage can be applied to the pixel electrode 3523. That's good too.

[0119] If you want to fix the frame duration 3624 and lengthen the display period 3622, then the period 362 This can be achieved by shortening step 3, i.e., by using high-speed sensing.

[0120] The timing chart shown in Figure 12 indicates that the common electrode 3522 drives the liquid crystal element 3513. Another method for driving a structure that is one electrode and also functions as a sensor electrode. Here is an example.

[0121] In this case, the period 3623 for detecting the object to be detected by the touch sensor is in a group of adjacent rows. They are simultaneous. A group of adjacent row signals are received by the wiring 3511 that detects changes in current. Because it flows, the spatial resolution of the detection is reduced accordingly. However, the total sensing period is 362 Since the length of 6 becomes shorter, high-speed sensing becomes possible.

[0122] As an example of adjacent rows in a group, taking the structure shown in the block diagram in Figure 9(A), Xr It can be a series of consecutive rows from to Xs. Here, r is an integer greater than or equal to 1 and less than or equal to s, s Xr is an integer greater than or equal to r and less than or equal to n-1. Preferably, s is greater than or equal to r+1. When processing of consecutive rows from to Xs is complete, processing of any remaining rows can then be performed. Yes, it is possible. For example, you can perform the same process on a group of adjacent rows starting from X(s+1). This completes the processing from row X1 to row Xn. Note that until the above processing is completed... Alternatively, processing may be performed on only one row. Furthermore, a certain number of rows may be grouped together as adjacent rows. You can use them as is, or you can use a non-constant number of rows in a group of adjacent rows. Also, for example For example, the common electrode 3522 in the input / output panel 3552 (see Figure 4(B)) is affected by the change in current. It is connected to the wiring 3511 (see Figure 9(A)) that detects Xr. In other words, it is connected from Xr to Xs You can connect consecutive lines up to this point.

[0123] The timing chart shown in Figure 13 indicates that the common electrode 3522 drives the liquid crystal element 3513. Another method for driving a structure that is one electrode and also functions as a sensor electrode. An example is shown.

[0124] In this case, a black signal is sequentially written to the display elements for a group of adjacent rows, and then, the sensing for a group of adjacent rows is performed at once, and thereafter, the video signal is sequentially written to the display elements for a group of adjacent rows. These are performed in period

[3627] , and similarly, the processing for the next group of adjacent rows is performed. When the one-frame period is fixed, the driving method like the timing chart shown in FIG. 13 can make the display period

[3622] longer than in the case of FIG. 12. It is possible.

[0125] Note that the configuration shown in this embodiment can be used in appropriate combination with the configuration shown in other embodiments. It can be.

[0126] (Embodiment 4) <00C08D1>Regarding the wiring of the touch panel according to one aspect of the present invention, in this embodiment, the number of wirings

[3510] is doubled and the number of wirings

[3511] is halved, and the configuration is described using the block diagram shown in FIG. 14. In the block diagram shown in FIG. 14, the number of capacitors

[3503] is the same as the number of capacitors

[3503] shown in the block diagram of FIG. 9(A). It will be described.

[0127] In the block diagram shown in FIG. 14, the number of capacitors

[3503] is the same as the number of capacitors

[3503] shown in the block diagram of FIG. 9(A). It is the same as the number of capacitors

[3503] shown.

[0128] <000090C>In FIG. 14, the touch sensor has a pulse voltage output circuit [3501A] and a pulse voltage output circuit 3501B. Also, the wirings

[3510] to which a pulse voltage is applied are exemplified as X1A-XnA , X1B-XnB, respectively, with 2n wirings. The wirings []

[3511] for detecting the change in current are exemplified as Y1-Ym, respectively, with m / 2 wirings. It is exemplified by m / 2 wirings each.

[0129] For example, the capacitor 3503A connected to the pulse voltage output circuit 3501A and the capacitor 3503B connected to the pulse voltage output circuit 3501B can be arranged adjacent to each other. This is possible.

[0130] By making such an arrangement selectable, the degree of freedom in the pixel layout increases. For example, when it is necessary to reduce the resistance of the wiring 3511, while increasing the line width of the wiring 3511, the number of pixels in the C direction can be maintained.

[0131] Note that the configuration shown in this embodiment can be used in appropriate combination with the configuration shown in other embodiments. This is possible.

[0132] (Embodiment 5) In this embodiment, a configuration example different from that of Embodiment 1 or Embodiment 2, which can be applied to the input / output panel of one aspect of the present invention, will be described. Specifically, the input / output panel of one aspect of the present invention has a liquid crystal element or a light emitting element.

[0133] 《Configuration Example 6.》 The input / output panel to be described using the circuit diagram shown in Fig. 1(A) has a sensor electrode 3527. The sensor electrode 3527 is separated from the common electrode 3522. As an example, a cross-sectional view schematically showing a part of the structure of the pixels of the input / output panel 3556 will be used for explanation (see Fig. 15(A )). )

[0134] The input / output panel 3556 shown in Fig. 15(A) has a liquid crystal element operating in the IPS (In-Plane-Switching) mode.

[0135] The input / output panel 3556 includes a transistor 3521, a common electrode, a pixel electrode 3523, and It is equipped with (see Figures 15(A) and 15(B)). The common electrode has a comb-like shape and The conductive electrode includes common electrode 3522A and common electrode 3522B. Also, the common electrode, pixel electrode Electrode 3523, sensor electrode 3527, and sensor electrode 3529 contain the same material. The common electrode, pixel electrode 3523, sensor electrode 3527 and sensor electrode 3529 are the same It can be formed in a single step.

[0136] Figure 15(B) schematically shows the wiring and other structures of the input / output panel 3556 shown in Figure 15(A). This is a plan view.

[0137] A portion of the electric field formed between sensor electrode 3529 and sensor electrode 3527 is shown by the dashed line 35 As shown in 63 (see Figure 15(B)). A touch sensor according to one aspect of the present invention crosses this electric field The object to be detected 3564 can be detected. Note that the sensor electrode 3529 and the sensor electrode 3527 corresponds to the pair of electrodes of the capacitive sensor unit 3515 (see Figure 1(A)). .

[0138] For other configurations of input / output panel 3556, refer to the configuration of input / output panel 3551. can.

[0139] 《Example Configuration 7.》 The input / output panel 3557 shown in Figure 16(A) is a VA (Vertical Alignment Mechanism). It has a liquid crystal element that operates in nt mode.

[0140] The common electrode 3522 faces the pixel electrode 3523 via a layer 3524 containing liquid crystal material. It is provided in this manner. In addition, wiring 3526 is provided overlapping with the common electrode 3522. Wiring 3526 electrically connects, for example, blocks not shown in Figure 16(A). It can be provided for this purpose. Also, a layer 3524 containing a liquid crystal material is provided between the common electrode 3522 and the pixel electrode 3523. Further, the sensor electrode 3529 and the pixel electrode 3523 contain the same material. Thus, the sensor electrode 3529 and the pixel electrode 3523 can be formed in the same process.

[0141] FIG. 16(B) is a plan view schematically showing the structure of the wiring and the like of the input / output panel 3557 shown in FIG. 16(A).

[0142] A part of the electric field formed between the sensor electrode 3529 and the sensor electrode 3527 is indicated by a broken line 35 63 (see FIG. 16(B)). The touch sensor according to one aspect of the present invention can detect a detection object 3564 crossing this electric field. Note that the sensor electrode 3529 and the sensor electrode 3527 correspond to a pair of electrodes of the capacitance type sensor unit 3515 (see FIG. 1(A)). Also, a part of the wiring 3526 and a part of the common electrode 3522 overlap with the pixel electrode 3523. To avoid complication of the drawing, the wiring 3526 and the common electrode 3522 are omitted in FIG. 16(B).

[0143] For other configurations of the input / output panel 3557, reference can be made to the configuration of the input / output panel 3551.

[0144] Note that, using the input / output panels shown in FIGS. 16(A) and 16(B), a liquid crystal element can be operated in a TN (Twisted Nematic) mode.

[0145] 《Configuration Example 8.》 Also, a touch panel according to one aspect of the present invention may have a light-emitting element.

[0146] ​​​​​​Figure 17(A) shows a schematic cross-sectional view illustrating the structure of some of the pixels in the input / output panel 3558. The input / output panel 3558 has a light-emitting element. The light-emitting element has a pixel electrode 3523, an electrode It comprises 3572 and a layer 3573 containing a luminescent material. It is provided between the pixel electrode 3523 and electrode 3572.

[0147] A conductive material that transmits visible light is used for electrode 3572. This allows light to be taken from the light-emitting element. It can be emitted. Or, the extracted light can be seen. For example, visible light. A conductive material that allows light to pass through can be used as the cathode or anode. In this embodiment, A conductive material that transmits visible light is used for electrode 3572, and electrode 3572 is used as the cathode (Figure 17(A )reference).

[0148] A conductive material that reflects visible light can be used for the pixel electrode 3523. Specifically, Aluminum, titanium, chromium, nickel, copper, yttrium, zirconium, molybdenum A single layer of metals such as silver, tantalum, or tungsten, or alloys mainly composed of these metals. The structure or stacked structure can be used for the pixel electrode 3523.

[0149] A conductive material that transmits visible light can be used for electrode 3572. Specifically, an oxide Indium, indium tin oxide, indium zinc oxide, zinc oxide, and gallium were added. Conductive oxides such as zinc oxide can be used for electrode 3572. It transmits visible light. The conductive film will be explained separately in a later section.

[0150] The pixel electrode 3523 contains the same material as the sensor electrode 3529. The base electrode 3523 and the sensor electrode 3529 can be formed in the same process. Furthermore, the pixel electrode 3523 is not connected to the sensor electrode 3529. Also, electrode 3572 is It includes a region that does not overlap with the sensor electrode 3529. For example, it can be formed using a shadow mask. It has an opening.

[0151] The input / output panel 3558 has an insulating layer 3576 and a resin layer 3577. Insulating layer 357 6 reduces the diffusion of water from the resin layer 3577 to the layer 3573 containing the luminescent material.

[0152] The input / output panel 3558 includes a pixel electrode 3523. The pixel electrode 3523 is a transistor It is electrically connected to either the source electrode or the drain electrode of the TA3530. The source electrode or the other drain electrode of the sta 3530 is electrically connected to the power line 3531. (See Figure 17(B)). Transistor 3530 has a function to control the light-emitting element. Transistor 3530 is a drive transistor. The source electrode is the source electrode or drain electrode of the switching transistor 3521. It is electrically connected to one side. The gate electrode of the switching transistor 3521 is connected to the gate Electrically connect to wiring 3517. Pixel electrode 3523 and sensor electrode 3529 are connected as a pair. Capacitive detection is performed by using electrodes and detecting changes in capacitance.

[0153] Furthermore, in order to coat the layer 3573 containing the luminescent material between each pixel, the pixel electrode 3523 A partition wall 3578 is formed between the luminescent material layer 3573 and the partition wall 3578 and For this purpose, inorganic insulating films or organic insulating films are used. As for inorganic insulating films, the CVD method is used. A silicon nitride film or silicon nitride oxide film formed by this method, or a nitride coated by the SOG method A silicon film or silicon nitride / oxide film can be used. Furthermore, as an organic insulating film, Acrylic resin films and the like can be used.

[0154] Here, when forming partition wall 3578, the tapered shape can be easily created by using the wet etching method. - The side walls can be of a certain shape. If the side walls of partition wall 3578 are not sufficiently smooth, a step will be created. The resulting degradation of the EL layer becomes a significant problem, so caution is necessary.

[0155] Furthermore, a partition wall 3578 is also formed in the contact area 3518. The unevenness of the pixel electrode caused by the irregularities of 3518 is filled by the partition wall 3578, thus eliminating the step This prevents degradation of the EL layer caused by [unspecified factor].

[0156] A portion of the electric field formed between sensor electrode 3529 and sensor electrode 3527 is shown by the dashed line 35 As shown in 63 (see Figure 17(A)). A touch sensor according to one aspect of the present invention crosses this electric field The object to be detected 3564 can be detected. Note that the sensor electrode 3529 and the sensor electrode 3527 corresponds to the pair of electrodes of the capacitive sensor unit 3515 (see Figure 1(A)). Furthermore, the drive methods shown in Figures 11, 12, and 13 can be used for the input / output panel.

[0157] Sensor electrode 3527 contains the same material as electrode 3572. This allows the sensor Electrodes 3527 and 3572 can be formed in the same process. Also, the sensor Electrode 3527 can be formed by separating it from electrode 3572. Also, sensor electrode 3 By using 527 as a common electrode, the sensor electrode 3527 and the sensor electrode 3529 are connected in a capacitive section. It can be used as a pair of electrodes.

[0158] 《Example of composition 9.》 The input / output panel 3559 shown in Figure 18(A) is the same as the input / output panel 3551 shown in Figure 3(A). The sensor electrode 3527 is formed on the substrate 3543. At this time, the substrate 3543 is It is sandwiched between the sensor electrode 3527 and the layer 3524 containing the liquid crystal material.

[0159] By arranging the sensor electrode 3527 in this manner, the sensor electrode 3529 and the sensor electrode Between 3527, electric field lines can be formed that are easily traversed by the detected object 3564. As a result, the sensitivity of capacitive sensors can be improved.

[0160] 《Configuration Example 10.》 A conductive film that transmits visible light is used for the common electrode 352 of the input / output panel 3557 shown in Figure 16(A). 2 or can be used for the electrode 3572 of the input / output panel 3558 shown in Figure 17(A). For example, a reflectance of 1% or more for light with a wavelength in the range of 400 nm to less than 800 nm is preferred. The transmittance is 5% or more and less than 100%, and preferably 1% or more. A conductive film with less than 00% conductivity can be used for the common electrode 3522 or electrode 3572. ru.

[0161] Specifically, it contains silver (Ag) with a thickness of 1 nm to 30 nm, preferably 1 nm to 15 nm. A conductive material, or a conductive material containing aluminum (Al), etc., is used for the common electrode 3522 Alternatively, it can be used in electrode 3572.

[0162] Alternatively, a material containing an element selected from indium, tin, zinc, gallium, or silicon. This can be used as the common electrode 3522 or electrode 3572. Specifically, In oxidation Materials, Zn oxide, In-Sn oxide (also called ITO), In-Sn-Si oxide (IT SO (also known as In-Zn oxide, In-Ga-Zn oxide, etc.) are used with common electrode 3522. Alternatively, it can be used for electrode 3572.

[0163] Alternatively, a film containing graphene or graphite can be placed on the common electrode 3522 or electrode 357. It can be used in 2. Specifically, it can form a film containing graphene oxide, and graphene oxide A graphene-containing film formed by reducing a film containing graphene can be used. Furthermore, methods involving the application of heat or the use of reducing agents can be used as reduction methods.

[0164] Furthermore, metal oxides, such as In-Ga-Zn oxide, are used with common electrode 3522 or the electrode. It can be used in 3572. Also, for example, a nitride insulating film such as a silicon nitride film can be used in the Using a multilayer film having a metal oxide on top as the common electrode 3522 or electrode 3572 Yes, it is possible. Furthermore, it is possible to thermally diffuse nitrogen or hydrogen from the nitride insulating film to the metal oxide. This allows for an increase in carrier density. Alternatively, metal oxides can be converted to oxides. It can be made into an oxide conductor (OC).

[0165] Alternatively, it may have a thickness of 30 nm to 500 nm or 100 nm to 400 nm. A suitable oxide conductor (OC) can be used for the common electrode 3522 or electrode 3572. .

[0166] Furthermore, a conductive film that transmits visible light is used for the pixel electrode 3523, sensor electrode 3527, and sensor electrode It can be used for one or more of 3529, electrodes 3572, or display elements. The display area is formed so as to overlap with one of the electrodes using a conductive film that transmits visible light. This allows the display light of the display element to be directed to the pixel electrode 3523 and the sensor electrode 3 It can pass through any or more of the 527, sensor electrode 3529, and electrode 3572. Alternatively, the user may use the pixel electrode 3523, sensor electrode 3527, sensor electrode 3529, and The display can be made visible by passing through one or more of the poles 3572.

[0167] 《Example Configuration 11.》 The input / output panel 3560 shown in Figure 18(B) has transmissive or semi-transmissive liquid crystal elements. The input / output panel 3560 is equipped with a backlight BL, for example, in Embodiment 1. In this respect, it differs from the input / output panel 3551 explained using Figure 3(A). Also, the common power The electrode 3522, pixel electrode 3523A, and pixel electrode 3523B all transmit visible light. ru.

[0168] The backlight BL emits light L in the direction of arrow 3581. The backlight BL is a liquid crystal Light can be irradiated onto the material-containing layer 3524. For example, a direct-lit light source or a side-lit light source. Light-type light sources can be used as backlights (BL).

[0169] The input / output panel 3560 has a functional film 3582. For example, a polarizing plate is placed on the functional film 3582. It can be used. Although not shown in the diagram, for example, a liquid crystal material can be used between the functional film 3582 and the liquid crystal material. Another functional membrane can be used, sandwiching the layer containing the active ingredient.

[0170] A transmissive liquid crystal element having a conductive film that transmits visible light is described herein. It can be used in input / output panels. Furthermore, it uses a field sequential method to illuminate each color of light. By using a backlight that supplies light sequentially, it is not possible to form a colored film on the liquid crystal element. Color display is also possible. Furthermore, when all colors of light are supplied simultaneously, white display is possible. Yes.

[0171] For example, reflective liquid crystal elements and polarizing plates can be used in the input / output panel 3560. Specifically, a polarizing plate can be used on the display surface side of a reflective liquid crystal element.

[0172] Furthermore, the light diffuser can be used on the display side of either input / output panel. This allows, Visibility can be improved.

[0173] Note that the input / output panel described in Embodiments 1 to 4 or in this embodiment From this configuration, you can select and combine two or more as appropriate. For example, in FFS mode Three electrodes are used for liquid crystal elements other than those that produce liquid crystal elements or liquid crystal elements that operate in VA mode. It is possible to have it. Alternatively, a display element using other display methods can be used.

[0174] This embodiment may be implemented in appropriate combination with other embodiments described herein. It is possible.

[0175] (Embodiment 6) In this embodiment, an example of a touch panel driving method according to one aspect of the present invention is shown with reference to the drawings. I will explain it.

[0176] [Examples of sensor detection methods] Figure 9(A) shows a passive matrix touch sensor where only capacitance is provided at the wiring intersections. The configuration of the touch sensor was shown, but it is an active matrix equipped with a transistor and a capacitor. A touch sensor using the squeegee method may also be used. Figure 24 shows an active matrix type touch sensor. This shows an example of one sensor circuit included in the "Sa" section.

[0177] The sensor circuit consists of capacitor 1503, transistor 1511, transistor 1512, and It has a transistor 1513. When a signal G2 is applied to the gate of transistor 1513, A voltage VRES is applied to either the socket or the drain, and the other is one electrode with capacitance 1503. It is electrically connected to the gate of transistor 1511. Transistor 1511 is the source Alternatively, one of the drains may be electrically connected to either the source or drain of transistor 1512. Then, a voltage VSS is applied to the other side. Transistor 1512 is subjected to a signal G1 at its gate. The other side of the source or drain is electrically connected to the signal line ML. The other side of the capacitance 1503 A voltage VSS is applied to the electrodes.

[0178] Next, I will explain the operation of the sensor circuit. First, the signal G2 is transistor 1513 When a potential is applied that turns it on, the gate of transistor 1511 is connected. A potential corresponding to the voltage VRES is applied to node n. Then, as signal G2, the transient By applying a potential that turns off TA1513, the potential at node n is maintained.

[0179] Next, the mutual capacitance of capacitance 1503 changes due to the proximity or contact of a detected object such as a finger. Consequently, the potential of node n changes from VRES.

[0180] The read operation applies a potential to signal G1 that turns on transistor 1512. The current flowing through transistor 1511, i.e., the current flowing through signal line ML, is determined by the potential of the dot n. The current changes. By detecting this current, the proximity or contact of the object to be detected can be detected. It is possible.

[0181] Transistors 1511, 1512, and 1513 are channel It is preferable to use a transistor in which an oxide semiconductor is applied to the semiconductor layer where the layer is formed. In particular, applying an oxide semiconductor to the semiconductor layer that forms the channel of transistor 1513. This makes it possible to maintain the potential of node n over a long period of time, and VR is applied to node n. This reduces the frequency of the ES (energy supply) resupply operation (refresh operation).

[0182] [Examples of methods for driving display devices] Figure 25(A) is a block diagram showing the configuration of a display device as an example. The gate drive circuit GD, source drive circuit SD, and pixel pix are shown. (See Figure 25(A)) Now, the gate lines x_1 to x_m (where m is a natural number) are electrically connected to the gate drive circuit GD. ), source lines y_1 to y_n (where n is a natural number) electrically connected to the source drive circuit SD. Correspondingly, each pixel (pix) is assigned a sign ranging from (1,1) to (n,m).

[0183] Next, Figure 25(B) shows the gate line and source line in the display device shown in Figure 25(A). This is a timing chart of the signal being applied. In Figure 25(B), the timing of the signal is calculated for each frame period. The examples are divided into cases where the data signal is rewritten and cases where it is not. Note that Figure 25(B) does not take into account periods such as return time.

[0184] When the data signal is rewritten every frame period, the gate lines x_1 to x_m will have the following properties: Scan signals are applied sequentially. During the horizontal scanning period 1H, when the scan signal is at the H level, each A data signal D is applied to the source lines y_1 through y_n of the column.

[0185] If the data signal is not rewritten every frame period, it is applied to gate lines x_1 to x_m. The scanning signal is stopped. Also, during the horizontal scanning period 1H, the source lines y_1 to y_n of each column Stop the data signal being supplied.

[0186] Driving methods that do not rewrite the data signal every frame period are particularly problematic because of the transients that pixels possess. This is effective when applying an oxide semiconductor to a semiconductor layer in which channels are formed as stas. Transistors using oxide semiconductors are different from transistors using semiconductors such as silicon. Compared to this, it is possible to reduce the off-current to an extremely small amount. Therefore, every frame period This allows the data signal written in the previous period to be retained without rewriting the data signal. It is possible to maintain the pixel gradation for, for example, 1 second or more, preferably 5 seconds or more. .

[0187] Furthermore, the semiconductor layer in which the channel is formed as a transistor in the pixel is made of polycrystalline silicon. When applying this, it is necessary to increase the size of the memory capacity of the pixels beforehand. This is preferable. The larger the retention capacity, the longer the pixel's tonal range can be retained. The size of the retaining capacitance is determined by the leakage current of the transistors and display elements electrically connected to the retaining capacitance. You can set it according to your needs, but for example, set the retention capacitance per pixel to 5fF or more and 5pF or less. Preferably, the F-force is 10 fF or more and 5 pF or less, more preferably 20 fF or more and 1 pF or less. Without rewriting the data signal for each frame period, the data signal written in the previous period It is possible to retain the pixels over a period of several frames or tens of frames. This makes it possible to preserve tonal gradation.

[0188] [Examples of methods for driving display devices and touch sensors] Figures 26(A) to (D) show, as an example, the touch sensor explained in Figures 9(A) and (B), When the display device described in Figures 25(A) and (B) is driven for 1 sec. (1 second), This diagram illustrates the operation during the subsequent frame period. Note that in Figure 26(A), the display device... The duration of one frame is 16.7ms (frame frequency: 60Hz), and the touch sensor's frame This shows the case where the frame duration is 16.7ms (frame frequency: 60Hz).

[0189] In this embodiment, the touch panel operates independently of the display device and the touch sensor. Therefore, the touch detection period can be set in parallel with the display period. For this reason, as shown in Figure 26(A) As shown, the frame duration of both the display device and the touch sensor is 16.7ms (frames). The frame frequency can be set to 60Hz. The number may be different. For example, as shown in Figure 26(B), the duration of one frame of the display device is Set to 8.3ms (frame frequency: 120Hz) and the duration of one frame for the touch sensor It can also be set to 16.7ms (frame frequency: 60Hz). Also, although not shown in the diagram, The duration of one frame of the display device may be set to 33.3 ms (frame frequency: 30 Hz).

[0190] Furthermore, the display device is configured to allow switching of the frame frequency, and when displaying moving images, the frame rate is switched. Increase the frequency (for example, 60Hz or higher or 120Hz or higher) when displaying still images. This involves reducing the frame rate (for example, 60Hz or less, 30Hz or less, or 1Hz or less). This reduces the power consumption of the display device. Also, the frame circumference of the touch sensor The configuration allows for switching between different frequency bands, with different frame frequencies used in standby mode and when touch is detected. You may make it.

[0191] Furthermore, the touch panel in this embodiment rewrites the data signals in the display device. By simply retaining the data signal that was rewritten in the previous period, the display device's one frame period This can be made to a period longer than 16.7 ms. Therefore, as shown in Figure 26(C) Next, set the frame duration of the display device to 1 sec (frame frequency: 1 Hz), and tap The duration of one frame of the sensor can also be set to 16.7ms (frame frequency: 60Hz). Cut.

[0192] Furthermore, in this embodiment, when the touch panel performs the operation shown in Figure 26(C), it continues This allows the touch sensor to be driven. Therefore, as shown in Figure 26(D) When the sensor detects the proximity or contact of the object to be detected, the data of the display device is transmitted. It's also possible to rewrite the signals.

[0193] Here, if the data signal rewriting operation of the display device is performed during the sensing period of the touch sensor, Furthermore, noise generated when driving the display device is transmitted to the touch sensor, affecting the touch sensor's sensitivity. This may cause a decrease in accuracy. Therefore, especially during the rewriting period of the data signal of the display device. It is preferable to drive the system so that the interval and the sensing period of the touch sensor are staggered.

[0194] Figure 27(A) shows the rewriting of the data signal of the display device and the sensing of the touch sensor. An example of alternating operations is shown. Also, Figure 27(B) shows the rewriting of the data signal of the display device. This example shows that the touch sensor is sensed once for every two actions performed. Regardless of the above, the touch sensor will perform sensing once for every three or more rewrite operations. It can also be used as a composition.

[0195] Furthermore, the transistors applied to the pixels of the display device are acidic in the semiconductor layer where the channel is formed. When using synthetic semiconductors, it is possible to drastically reduce the off-current, thus reducing the data signal volume. The frequency of switching can be significantly reduced. Specifically, the data signal is rewritten. Afterward, it is possible to allow a sufficiently long pause period before the data signal is rewritten again. The pause period can be, for example, 0.5 seconds or more, 1 second or more, or 5 seconds or more. The upper limit of the downtime depends on the leakage current of the capacitors connected to the transistors and the display elements, etc. It is restricted, for example, to less than 1 minute, less than 10 minutes, less than 1 hour, or less than 1 day. It is possible.

[0196] Figure 27(C) shows an example where the data signal of the display device is rewritten at a frequency of once every 5 seconds. In Figure 27(C), the display device rewrites the data signal and then displays the next data signal. A pause period is set during which the operation is stopped before the rewrite operation. During the pause period, The touch sensor has a frame frequency of iHz (where i is greater than or equal to the frame frequency of the display device, in this case 0). It can be driven at 2Hz or higher. Also, as shown in Figure 27(C), the touch sensor Perform sensing during the downtime and avoid doing so during the data signal rewriting period of the display device. This is preferable because it improves the sensitivity of the touch sensor. Also, as shown in Figure 27(D) Therefore, by simultaneously rewriting the data signal of the display device and sensing with a touch sensor, This allows for simplification of the driving signals.

[0197] Furthermore, during periods when the data signals of the display device are not being rewritten, the signal to the drive circuit is not transmitted. You can simply stop supplying only the power, or you can also stop supplying the power potential in addition to that to further reduce power consumption. It can reduce power consumption.

[0198] A touch panel according to one aspect of the present invention comprises a display device and a touch sensor on two flexible substrates. It has a configuration in which the device is sandwiched, allowing the distance between the display device and the touch sensor to be brought extremely close. At this time, noise from the operation of the display device is more easily transmitted to the touch sensor, Although there is a risk that the sensitivity of the device may decrease, applying the driving method exemplified in this embodiment will result in a decrease in sensitivity. This makes it possible to create a touch panel that is both thin and highly sensitive.

[0199] (Embodiment 7) In this embodiment, the transistor 3521 of the input / output panel according to one aspect of the present invention is used as an example. I will now explain one transistor configuration.

[0200] The 3521 transistor, whether bottom-gate or top-gate, has two gate electrodes. It's also acceptable to use a type that possesses something.

[0201] Figure 21(A) shows a bottom-gate type transistor 151. Transistor 151 is, A conductive film 106 on the substrate 102, an insulating film 104 on the conductive film 106, and gold on the insulating film 104. Metal oxide film 108, conductive films 120a and 120b on the metal oxide film 108, and metal oxide Insulating film 118 on film 108, conductive films 120a and 120b, and insulating film 12 on insulating film 118 2, and .

[0202] In transistor 151, the conductive film 106 functions as a gate electrode, and the conductive film 120a functions as a source electrode, and the conductive film 120b functions as a drain electrode. It has a function.

[0203] A conductive film 114 is formed on the insulating film 122 and is the gate electrode of the transistor 151. When electrically connecting with the conductive film 106, the insulating film 104 and the insulating film are connected as shown in Figure 21(B). Openings can be provided in 118 and the insulating film 122 to allow connection.

[0204] Figure 21(C) shows a top-gate type transistor 152. Transistor 152 is, Insulating film 104 on substrate 102, metal oxide film 108 on insulating film 104, metal oxide film The insulating film 110 on 108, the conductive film 112 on the insulating film 110, the insulating film 104, and the metal oxide It has a physical film 108 and an insulating film 116 on the conductive film 112. It has a border film 118.

[0205] The metal oxide film 108 is in a region where the conductive film 112 is not superimposed and the insulating film 116 is in contact with it. It has region 108n. Region 108n is where the metal oxide film 108 described earlier is n This is a molded region. Note that region 108n is in contact with the insulating film 116, and the insulating film 116 is nitrogen It contains nitrogen or hydrogen. Therefore, nitrogen or hydrogen in the insulating film 116 is attached to region 108n. When added, the carrier density increases, resulting in an n-type architecture.

[0206] Transistor 152 is provided on insulating film 118 on insulating film 116 and insulating films 116 and 118 A conductive film 120a is electrically connected to region 108n through the opening 141a, The region 108n is electrically connected through the opening 141b provided in the insulating films 116 and 118. It has a conductive film 120b that is connected to it.

[0207] In transistor 152, the conductive film 112 functions as a gate electrode, and the conductive film 120a functions as a source electrode, and the conductive film 120b functions as a drain electrode. It has a function.

[0208] A conductive film 114 is formed on the insulating film 122 and is the gate electrode of the transistor 152. When electrically connecting with the conductive film 112, the insulating film 116 and the insulating film are connected as shown in Figure 21(D). Openings can be provided in 118 and the insulating film 122 to allow connection.

[0209] In the transistor 3521 shown in Figures 1(A) and 1(B), the gate electrode 351 6 is conductive film 106 in transistor 151, and conductive in transistor 152. A film 112 can be used.

[0210] The above describes a transistor with one gate electrode, but below we will discuss the gate electrode... Let's describe the two transistors 150. Transistor 150 is a transistor This configuration combines the features of transistor 151 and transistor 152.

[0211] Figure 22(A) is a top view of transistor 150, and Figure 22(B) is a top view of Figure 22(A). This is a cross-sectional view between the dashed line X1 and X2, and Figure 22(C) is a cross-sectional view between the dashed line Y1 and Y2 in Figure 22(A). This is a cross-sectional view.

[0212] The transistor 150 shown in Figure 22(A),(B),(C) is connected to the conductive film 106 on the substrate 102. , an insulating film 104 on the conductive film 106, a metal oxide film 108 on the insulating film 104, and metal oxide An insulating film 110 on the material film 108, a conductive film 112 on the insulating film 110, an insulating film 104, and a metal It comprises an oxide film 108 and an insulating film 116 on a conductive film 112.

[0213] The metal oxide film 108 has the same configuration as shown in other embodiments. Figure 22( As shown in A)(B)(C), the transistor 150 has a conductive film 106 and an opening 143. To possess.

[0214] The opening 143 is provided in the insulating films 104 and 110. The conductive film 106 is provided in the opening 1 The conductive film 112 is electrically connected via 43. Therefore, the conductive film 106 and conductive film 1 The same potential is applied to 12. Note that without providing the opening 143, the conductive film 106 and the conductor A different potential may be applied to the film 112. Alternatively, the conductive film may be provided without the opening 143. 106 may be used as a light-shielding film. For example, the conductive film 106 may be formed from a light-shielding material. This makes it possible to suppress the light irradiated from below onto the metal oxide film 108.

[0215] Furthermore, when the transistor 150 is configured, the conductive film 106 is the first gate electrode (bottom The conductive film 112 functions as a second gate electrode (also called a toe electrode), and the conductive film 112 has the function of a second gate electrode (toe electrode). It functions as a gate electrode (also called a gate electrode). In addition, the insulating film 104 is the first gate insulating The insulating film 110 functions as a border film and also functions as a second gate insulating film.

[0216] The conductive film 106 is made of the same material as the conductive films 112, 120a, and 120b described above. It is possible to have resistance. In particular, by forming the conductive film 106 with a copper-containing material, the resistance can be reduced. It is preferable because it can be made lower. For example, the conductive film 106 is a titanium nitride film, tang nitride A laminated structure is provided in which a copper film is provided on a tal film or tungsten film, and conductive films 120a, 120 b is a laminated structure in which a copper film is provided on a titanium nitride film, a tantalum nitride film, or a tungsten film. This is preferable. In this case, the transistor 150 is the pixel transistor and drive of the display device. By using it in either or both of the dynamic transistors, conductive film 106 and conductive film 120 Parasitic capacitance generated between a and the conductive film 106 and the conductive film 120b This can be made lower. Therefore, conductive film 106, conductive film 120a, and conductive film 12 0b is used as the first gate electrode, source electrode, and drain electrode of transistor 150. In addition to being used, wiring for power supply, signal supply, or connection of the display device. It can also be used for lines, etc.

[0217] Thus, the transistor 150 shown in Figures 22(A), (B), and (C) has a metal oxide film 10 The structure has conductive films above and below 8 that function as gate electrodes. As shown, a semiconductor device according to one aspect of the present invention may be provided with a plurality of gate electrodes.

[0218] A conductive film 114 is formed on the insulating film 122 and is the gate electrode of the transistor 150. When electrically connecting to conductive film 112 or conductive film 106, see Figure 21(C) or Figure As shown in 21(D), each insulating film can be provided with an opening and connected.

[0219] Furthermore, as shown in Figures 22(B) and 22(C), the metal oxide film 108 is the first gate electrode. The conductive film 106 functions as a second gate electrode, and the conductive film 112 functions as a second gate electrode. It is positioned opposite to another conductive film, sandwiched between two gate electrodes.

[0220] Furthermore, the length of the conductive film 112 in the channel width direction is the same as the length of the metal oxide film 108 in the channel width direction. The length is longer than the channel width direction of the metal oxide film 108, with the insulating film 110 sandwiched in between. It is covered with a conductive film 112. Also, conductive film 112 and conductive film 106 are separated by an insulating film 104. , and are connected at the opening 143 provided in the insulating film 110, so the metal oxide film 1 One side of 08 in the channel width direction faces the conductive film 112 with the insulating film 110 in between. It is.

[0221] In other words, the conductive film 106 and the conductive film 112 are openings provided in the insulating films 104 and 110. A region connected at part 143 and located outside the side edge of the metal oxide film 108. It holds.

[0222] With this configuration, the metal oxide film 108 contained in the transistor 150 is A conductive film 106 that functions as a first gate electrode and a conductive film 106 that functions as a second gate electrode It can be electrically surrounded by the electric field of film 112. Like transistor 150, A channel region is formed in a metal by the electric fields of the first and second gate electrodes. The transistor device structure electrically surrounding the oxide film 108 is Surrounded This can be called a channel (S-channel) structure.

[0223] Since transistor 150 has an S-channel structure, the conductive film 106 or conductive The film 112 effectively applies an electric field to the metal oxide film 108 to induce a channel. This improves the current drive capability of transistor 150 and enhances its on-current characteristics. It becomes possible to obtain this. Also, since the on current can be increased, the transistor It becomes possible to miniaturize transistor 150. Also, transistor 150 is a metal oxide film 1 Since 08 has a structure surrounded by conductive films 106 and 112, This can increase the mechanical strength of the 150.

[0224] Furthermore, in the channel width direction of transistor 150, the opening 14 of the metal oxide film 108 An opening different from opening 143 may be formed on the side where 3 is not formed.

[0225] Furthermore, as shown in transistor 150, the transistor exists with a semiconductor film in between. When there is a pair of gate electrodes, one gate electrode receives signal A, and the other gate electrode receives signal A. A fixed potential Vb may be applied to the poles. Also, signal A is applied to one terminal electrode, and the other... A signal B may be applied to the gate electrode. Also, a fixed potential Va may be applied to one of the gate electrodes. A fixed potential Vb may be applied to the other terminal terminal.

[0226] Signal A is, for example, a signal used to control a conduction or non-conduction state. Signal A is, This is a digital signal that takes two types of potentials: potential V1 or potential V2 (where V1 > V2). It is also possible to set potential V1 as the high power supply potential and potential V2 as the low power supply potential. Yes. Signal A may be an analog signal.

[0227] A fixed potential Vb is, for example, a potential used to control the threshold voltage VthA of a transistor. Yes. The fixed potential Vb may be potential V1 or potential V2. In this case, the fixed potential It is preferable that there is no need to provide a separate potential generation circuit for generating Vb. The fixed potential Vb is The potential may be different from potential V1 or potential V2. Lower the fixed potential Vb. Therefore, the threshold voltage VthA can be increased in some cases. As a result, the gate-source voltage V Reduces drain current when gs is 0V, and reduces leakage current in circuits with transistors. It may be possible to reduce it. For example, the fixed potential Vb may be lower than the low power supply potential. On the other hand, In some cases, the threshold voltage VthA can be lowered by increasing the fixed potential Vb. As a result, the gate-source voltage Vgs improves the drain current when the power supply potential is high, and In some cases, the operating speed of a circuit with a transistor can be improved. For example, by lowering the fixed potential Vb to a low voltage. It may be set higher than the source potential.

[0228] Signal B is, for example, a signal used to control a conduction or non-conduction state. Signal B is, This is a digital signal that takes two types of potentials: potential V3 or potential V4 (where V3 > V4). It is also possible to set potential V3 as the high power supply potential and potential V4 as the low power supply potential. Signal B may be an analog signal.

[0229] If both signal A and signal B are digital signals, then signal B will have the same digital value as signal A. It may also be a single signal. In this case, the on-current of the transistor is increased, and the transistor has In some cases, the operating speed of the circuit can be improved. At this time, the potential V1 and the electric current in signal A Potential V2 may be different from potentials V3 and V4 in signal B. For example, signal The gate insulator corresponding to the gate to which signal B is input corresponds to the gate to which signal A is input If it is thicker than the gate insulating film, the potential amplitude of signal B (V3-V4) is the same as the potential amplitude of signal A ( It is also acceptable to make it larger than V1-V2). Doing so may affect the conduction state or non-conductivity of the transistor. To make the influence of signal A on the conduction state equal to the influence of signal B. It may be possible.

[0230] If both signal A and signal B are digital signals, signal B will have a different digital value from signal A. It may also be a signal that has signals. In this case, the control of the transistor is separately determined by signal A and signal B. This can be done and may enable higher functionality. For example, if the transistor is n-cell In the case of a channel type, only when signal A is at potential V1 and signal B is at potential V3 When a conduction state occurs, or when signal A is at potential V2 and signal B is at potential V4 When it is in a non-conductive state, a single transistor can perform functions such as NAND gates and NOR gates. This can sometimes be achieved. Also, signal B is a signal for controlling the threshold voltage VthA. This may also be the case. For example, signal B is the period during which the circuit with the transistor is operating, The signal may have a different potential during the period when the circuit is not operating. Signal B is the circuit The signals may have different potentials depending on the operating mode. In this case, signal B is more than signal A. The electrical potential may not switch very frequently.

[0231] If both signal A and signal B are analog signals, then signal B is an analog signal with the same potential as signal A. The signal, an analog signal obtained by multiplying the potential of signal A by a constant, or the potential of signal A added by a constant. Alternatively, a subtracted analog signal may also be used. In this case, the on-current of the transistor is Furthermore, it may be possible to improve the operating speed of circuits containing transistors. Signal B is equal to Signal A A different analog signal may also be used. In this case, the control of the transistor is controlled by signal A and signal B This can sometimes be done separately, potentially leading to higher functionality.

[0232] Signal A may be a digital signal and signal B may be an analog signal. Or, signal A may be an analog signal. It is an analog signal, and signal B may be a digital signal.

[0233] When a fixed potential is applied to both gate electrodes of a transistor, the transistor is treated as a resistive element and In some cases, they can function as equivalent elements. For example, a transistor can function as an n-channel In the case of a type 1, increasing (or decreasing) the fixed potential Va or fixed potential Vb will cause a transient In some cases, the effective resistance of the sta can be lowered (or raised). Fixed potential Va and fixed potential By increasing (or decreasing) both Vb, it is possible to obtain the result using a transistor with only one gate. In some cases, an effective resistance lower (or higher) than the effective resistance obtained may be achieved.

[0234] Furthermore, an insulating film may be formed on transistor 150. Figure 22(A)(B)( The transistor 150 shown in C) has conductive films 120a, 120b and insulating film 118. It has a border film 122.

[0235] The insulating film 122 has the function of flattening irregularities caused by transistors, etc. 122 can be an insulating material and is formed using an inorganic or organic material. Inorganic materials include silicon oxide films, silicon oxide nitride films, silicon nitride oxide films, silicon nitride films. Examples include aluminum oxide films, aluminum nitride films, etc. Examples include photosensitive resin materials such as acrylic resin or polyimide resin.

[0236] This embodiment can be appropriately combined with other embodiments shown herein. .

[0237] (Embodiment 8) In this embodiment, the configuration of an information processing device according to one aspect of the present invention is shown in Figures 19 and 20. I will explain while referring to this.

[0238] Figures 19 and 20 illustrate the configuration of an information processing device according to one embodiment of the present invention. Figure 9(A) is a block diagram of the information processing device, and Figures 19(B) through 19(E) show the information processing This is a perspective view illustrating the configuration of the device. Figures 20(A) to 20(E) show the information processing equipment. This is a perspective view illustrating the layout of the unit.

[0239] <Information Processing Device> The information processing device 5200B described in this embodiment includes an arithmetic unit 5210 and an input / output device 5 It has 220 (see Figure 19(A)).

[0240] The arithmetic unit 5210 has a function to be supplied with operation information, and based on the operation information, it provides image information It has the function of supplying.

[0241] The input / output device 5220 includes a display unit 5230, an input unit 5240, a detection unit 5250, and a communication unit 52 90. It has functions for supplying operation information and image information. Also, input / output The device 5220 has the function of supplying detection information, the function of supplying communication information and the function of supplying communication information It is equipped with the function of being supplied.

[0242] The input unit 5240 has a function to supply operation information. For example, the input unit 5240 is an information processing unit. Operational information is supplied based on the user's actions on the 5200B control device.

[0243] Specifically, keyboards, hardware buttons, pointing devices, and touch sensors. Voice input devices, eye-tracking input devices, etc., can be used in the input unit 5240.

[0244] The display unit 5230 has a display panel and a function to display image information. For example, other embodiments The display panel described in the form can be used in the display unit 5230.

[0245] The detection unit 5250 has a function to supply detection information. For example, if an information processing device is used It has a function to detect the surrounding environment and supply it as detection information.

[0246] Specifically, it detects illuminance sensors, imaging devices, posture detection devices, pressure sensors, and human presence sensors. It can be used in part 5250.

[0247] The communication unit 5290 has functions for receiving and supplying communication information. For example, wireless It has the function of connecting to other electronic devices or communication networks via communication or wired communication. It includes functions such as wireless local area communication, telephone communication, and short-range wireless communication.

[0248] <Example of information processing device configuration 1.> For example, the outer shape of a cylindrical column or the like can be applied to the display unit 5230 (Figure 19). (See (B)). It also features a function to change the display method according to the illumination level of the usage environment. It has a function to detect the presence of a person and change the displayed content. This allows, for example, a building It can be installed on a pillar. Or, it can display advertisements or information, etc. Or It can be used in digital signage, etc.

[0249] <Example of information processing device configuration 2.> For example, it has a function that generates image information based on the trajectory of the pointer used by the user. See Figure 19(C). Specifically, the diagonal length is 20 inches or more, preferably 40 inches. A display panel of 55 inches or larger, more preferably 55 inches or larger, can be used. Number display panels can be arranged and used in a single display area. Alternatively, multiple display panels can be used. These can be arranged side-by-side to create a multi-screen setup. This allows for applications such as electronic whiteboards and electronic displays. It can be used for small bulletin boards, electronic signs, etc.

[0250] <Example of information processing device configuration 3.> For example, it has a function to change the display method according to the illumination level of the usage environment (see Figure 19(D)). This can, for example, reduce the power consumption of a smartwatch. For example, the image can be used effectively even in environments with strong ambient light, such as outdoors on a sunny day. It can be displayed on a smartwatch.

[0251] <Example of information processing device configuration 4.> The display unit 5230 has, for example, a curved surface that gently curves along the side of the housing (Figure 19( See E). Alternatively, the display unit 5230 includes a display panel, and the display panel is, for example, on the front It also has the ability to display on the sides and top. This allows, for example, the display on the front of the mobile phone alone. In addition, image information can be displayed on the sides and top.

[0252] <Example of information processing device configuration 5.> For example, it has a function to change the display method according to the illumination level of the usage environment (see Figure 20(A)). ). This can reduce the power consumption of smartphones. Or, for example, To ensure suitable use even in bright outdoor environments such as sunny days, images can be captured on a smartphone. It can be displayed on the screen.

[0253] <Example of information processing device configuration 6.> For example, it has a function to change the display method according to the illumination level of the usage environment (see Figure 20(B)). This allows for optimal use even when exposed to strong sunlight that shines into the room on a sunny day. The image can then be displayed on a television system.

[0254] <Example of information processing device configuration 7.> For example, it has a function to change the display method according to the illumination level of the usage environment (see Figure 20(C)). This allows for suitable use even in environments with strong sunlight, such as outdoors on a sunny day. Uni can display images on a tablet computer.

[0255] <Example of information processing device configuration 8.> For example, it has a function to change the display method according to the illumination level of the usage environment (see Figure 20(D)). This allows for optimal viewing even in environments with strong ambient light, such as sunny outdoor conditions. It can display the subject on a digital camera.

[0256] <Example of information processing device configuration 9.> For example, it has a function to change the display method according to the illumination level of the usage environment (see Figure 20(E)). This allows for suitable use even in environments with strong sunlight, such as outdoors on a sunny day. Therefore, images can be displayed on a personal computer.

[0257] This embodiment can be appropriately combined with other embodiments shown herein. .

[0258] (Embodiment 9) In this embodiment, the configuration of an electronic device according to one aspect of the present invention will be described with reference to Figure 23. I will reveal it.

[0259] <Electronic equipment> Figure 23 shows a foldable electronic device 920. (Figure 23 shows electronic device 920) It has a housing 921a, a housing 921b, a display unit 922, a hinge 923, etc. Unit 22 is incorporated into enclosures 921a and 921b.

[0260] Housings 921a and 921b are rotatably connected by hinges 923. (Electronic device) 920 is in a closed state with housings 921a and 921b, and in an open state as shown in Figure 23. It can be transformed into one state and another. This makes it highly portable when carrying it around, and when used... Its large display area provides excellent visibility.

[0261] Furthermore, when the housings 921a and 921b are opened, the hinge 923 is such that these angles It is preferable to have a locking mechanism to prevent the angle from becoming larger than a predetermined angle. For example, the angle at which it locks (and cannot be opened further) is between 90 degrees and 180 degrees. It is preferable that the angle be 90 degrees, 120 degrees, 135 degrees, 150 degrees, or 175 degrees. This can be done. This can improve convenience, safety, and reliability. .

[0262] Furthermore, the electronic device 920 spans across housings 921a and 921b, which are connected by a hinge 923. A flexible display unit 922 is provided.

[0263] Furthermore, when the housing 921a and housing 921b of the electronic device 920 are opened, the display unit 922 is It is held in a greatly curved shape. For example, the radius of curvature is between 1 mm and 50 mm. The display unit 922 is held in a state of being between 5 mm and 30 mm. Yes, it is possible. A portion of the display unit 922 has pixels that extend continuously from the housing 921a to the housing 921b. These elements are arranged to enable curved surface displays.

[0264] Because the hinge 923 has the locking mechanism described above, excessive force is not applied to the display unit 922. This prevents damage to the display unit 922. Therefore, it is highly reliable. It can be made possible to create electronic devices.

[0265] The display unit 922 functions as a touch panel and can be operated with a finger or stylus. can.

[0266] Either housing 921a or housing 921b is provided with a wireless communication module, and the interface - Internet, LAN (Local Area Network), Wi-Fi (registered trademark) It is possible to send and receive data via computer networks such as these.

[0267] The display unit 922 is preferably composed of a single flexible display. This enables continuous, uninterrupted display between casings 921a and 921b. This is possible. Furthermore, each of the housings 921a and 921b is equipped with a display. It can also be configured in this way.

[0268] This embodiment can be appropriately combined with other embodiments described herein, at least in part. They can be implemented together.

[0269] For example, in this specification, etc., if it is explicitly stated that X and Y are connected The cases are when X and Y are electrically connected and when X and Y are functionally connected. The cases disclosed in this specification, etc., include the case where X and Y are directly connected. Therefore, the connection relationships are not limited to those shown in the diagram or text. In addition to the connection relationships shown in the diagram or text, other connections may also be included as described in the diagram or text. do.

[0270] Here, X and Y are the object (e.g., device, element, circuit, wiring, electrode, terminal, conductive film, layer). (etc.)

[0271] One example of a case where X and Y are directly connected is when an electrical connection between X and Y is possible. Elements such as switches, transistors, capacitive elements, inductors, resistive elements, and dies. If the diode, display element, light-emitting element, load, etc. are not connected between X and Y and elements that enable electrical connection between X and Y (e.g., switches, transistors, capacitors). Without the need for elements such as components, inductors, resistors, diodes, display elements, light-emitting elements, loads, etc. This is the case when X and Y are connected.

[0272] One example of a case where X and Y are electrically connected is the ability to make an electrical connection between X and Y possible. Elements such as switches, transistors, capacitive elements, inductors, resistive elements, and dies. One or more devices (such as diodes, display elements, light-emitting elements, and loads) are connected between X and Y. Yes, it is possible. Furthermore, a switch has the function of being controlled to be on or off. In other words, a switch The switch can be in a conductive (on) or non-conductive (off) state, allowing current to flow. It has a function to control whether or not current flows. Alternatively, the switch selects the path through which current flows. It has a function to switch between them. Furthermore, if X and Y are electrically connected, X and This includes cases where Y is directly connected to it.

[0273] One example of a functional connection between X and Y is enabling a functional connection between X and Y. Circuits that perform this function (for example, logic circuits (inverters, NAND gates, NOR gates, etc.), signal transformers) Conversion circuits (DA conversion circuits, AD conversion circuits, gamma correction circuits, etc.), potential level conversion circuits (electric (Source circuits (boost circuits, buck circuits, etc.), level shifter circuits that change the potential level of a signal, etc.) Voltage source, current source, switching circuit, amplification circuit (which can increase signal amplitude or current amount, etc.) Circuits, operational amplifiers, differential amplifier circuits, source follower circuits, buffer circuits, etc., signal generation One or more circuits (such as memory circuits and control circuits) can be connected between X and Y. For example, even if another circuit is placed between X and Y, the signal output from X If the signal is transmitted to Y, then X and Y are assumed to be functionally connected. When X and Y are functionally connected, the situation is different from when X and Y are directly connected. This includes cases where and are electrically connected.

[0274] Furthermore, if it is explicitly stated that X and Y are electrically connected, then X and Y and When they are electrically connected (i.e., when there is another element or circuit between X and Y) (when connected) and when X and Y are functionally connected (i.e., X and Y are connected) (When functionally connected with another circuit in between) and when X and Y are directly connected In the case of (that is, when X and Y are connected without another element or circuit in between) and However, this shall be as disclosed in this specification, etc. That is, explicitly stated that they are electrically connected. If it is explicitly stated that it is connected, then Similar information is disclosed in this specification, etc.

[0275] For example, if the source (or first terminal, etc.) of the transistor is connected via Z1 (or via (In short), electrically connected to X, the drain (or second terminal, etc.) of the transistor is connected to Z. If Y is electrically connected via (or without) 2, or if the transistor source (or the first terminal, etc.) is directly connected to a part of Z1, and another part of Z1 is directly connected to X. They are directly connected, with the transistor's drain (or second terminal, etc.) directly connected to a portion of Z2. If it is connected to and another part of Z2 is directly connected to Y, it can be expressed as follows: It is possible to do so.

[0276] For example, "X and Y and the source (or first terminal, etc.) and drain (or second terminal) of the transistor." The terminals (such as the X terminal) are electrically connected to each other, and X is the source (or the X terminal) of the transistor. The electrical connections are in the following order: terminal 1, the drain of the transistor (or terminal 2, etc.), and Y. It can be expressed as "It is connected." Or, "The source (or the source) of the transistor." Terminal 1 (or terminal 2) is electrically connected to X, and the drain (or terminal 2) of the transistor is connected to X. (d) is electrically connected to Y, X is the source of the transistor (or the first terminal, etc.), and the transistor The drain (or second terminal, etc.) of the converter, Y, is electrically connected in this order. It can be expressed as "X is the source (or first terminal) of the transistor." Alternatively, "X is the source (or first terminal) of the transistor." Y is electrically connected to X via the drain (or second terminal, etc.) and X, the transistor The source of the transistor (or the first terminal, etc.), the drain of the transistor (or the second terminal, etc.) ), Y is provided in this connection order. By using a specific method of expression to define the order of connections in the circuit configuration, Distinguish between the source (or first terminal, etc.) and drain (or second terminal, etc.) of the zista. This allows us to determine the technical scope.

[0277] Alternatively, another way to express it is, for example, "the source (or first terminal, etc.) of the transistor." It is electrically connected to X via at least a first connection path, and the first connection path is It does not have a second connection path, and the aforementioned second connection path is via a transistor, The source (or first terminal, etc.) of the transistor and the drain (or second terminal, etc.) of the transistor. The path between ( and ), and the first connection path is a path via Z1, and the transit The drain (or second terminal, etc.) of the terminal is electrically connected to Y via at least a third connection path. They are connected in a manner, and the third connection path does not have the second connection path, and the third The connection path is the path via Z2. This can be expressed as "The transition The source of the starter (or the first terminal, etc.) is connected via Z1 through at least the first connection path. And, electrically connected to X, the first connection path does not have a second connection path, The second connection path has a connection path via a transistor, and the drain of the transistor (or a second terminal, etc.) is connected to Y via Z2 by at least a third connection path. It is expressed as: "They are electrically connected, and the third connection path does not have the second connection path." It is possible. Or, "the source (or first terminal, etc.) of the transistor is less Both are electrically connected to X via Z1 through a first electrical path, and the first electrical The target path does not have a second electrical path, and the second electrical path is the transistor From the source (or first terminal, etc.) to the drain (or second terminal, etc.) of the transistor It is an electrical path, and the drain (or second terminal, etc.) of the transistor is at least third The electrical path is electrically connected to Y via Z2, and the third electrical path is , it does not have a fourth electrical path, and the fourth electrical path is the drain of the transistor The electrical pulse from (or the second terminal, etc.) to the source (or the first terminal, etc.) of the transistor It can be expressed as "It is S." Using similar methods of expression as these examples, the circuit configuration By defining the connection path in the transistor, the source (or first terminal) To distinguish between the drain (or second terminal, etc.) and the second terminal, and to determine the technical scope. It is possible.

[0278] Note that these methods of expression are just examples and are not limited to these methods. Here, X Y, Z1, and Z2 are the objects (e.g., devices, elements, circuits, wiring, electrodes, terminals, conductive films, etc.) Let's assume it is a layer, etc.

[0279] Note that, in circuit diagrams, independent components are shown as being electrically connected to each other. Even in such cases, one component may possess the functions of multiple components. For example, if part of the wiring also functions as an electrode, one conductive film will perform the function of the wiring, and It possesses the functions of both components of the electrode's function. Therefore, the electrode in this specification A conductive connection is a situation where a single conductive film combines the functions of multiple components. Combined forms are also included in that category. [Explanation of symbols]

[0280] 104 Insulating film 110 Insulating Film 116 Insulating film 118 Insulating Film 122 Insulating film 150 transistors 151 transistors 152 transistors 922 Display section 1503 capacity 1511 Transistors 1512 transistors 1513 Transistors 3503 capacity 3503A capacity 3503B capacity 3510 Wiring 3511 Wiring 3513 Liquid crystal element 3514 Capacity section 3515 Capacitive Sensor Unit 3516 Guard Terminal 3517 Gate wiring 3518 Contact Area 3519 Source Wiring 3521 Transistor 3522 Common electrode 3522A Common Electrode 3522B Common electrode 3523 Pixel electrodes 3523A Pixel electrode 3523B Pixel electrode 3524 Layer containing liquid crystal material 3525 Color Filters 3526 Wiring 3527 Sensor electrode 3529 Sensor electrode 3530 Transistors 3531 Power line 3551 Input / Output Panel 3552 Input / Output Panel 3553 Input / Output Panel 3554 Input / Output Panel 3555 Input / Output Panel 3556 Input / Output Panel 3557 Input / Output Panel 3558 Input / Output Panel 3559 Input / Output Panel 3560 Input / Output Panel 3561 Orientation film 3562 Orientation film 3572 Electrode 3573 Layer containing luminescent material 3578 Bulkhead 3581 Arrow 5230 Display section

Claims

1. The first insulating layer, A semiconductor layer having a region located above the first insulating layer and having a channel formation region for a transistor, A first conductive layer having a region in contact with the upper surface of the semiconductor layer and a region that functions as either the source electrode or the drain electrode of the transistor, A second insulating layer having a region located above the first conductive layer, A second conductive layer having a region located above the second insulating layer and a region that functions as a common electrode, A third insulating layer having a region located above the second conductive layer, A third conductive layer having a region in contact with the upper surface of the third insulating layer and a region that functions as a pixel electrode, A fourth conductive layer having a region in contact with the upper surface of the third insulating layer and made of the same material as the third conductive layer, A fifth conductive layer having a region located below the second insulating layer and having a region that functions as touch sensor wiring, The fourth conductive layer has a region in contact with the fifth conductive layer, The fourth conductive layer has a region that overlaps with the second conductive layer in the region where the fifth conductive layer and the second conductive layer overlap, The fourth conductive layer has a region that overlaps with the sixth conductive layer, which is electrically connected to the semiconductor layer and has a region that functions as a source wiring. The sixth conductive layer has a region extending in the first direction, In a plan view, the semiconductor layer has a region located between the sixth conductive layer and the seventh conductive layer having a region extending in the first direction.

2. The first insulating layer, A semiconductor layer having a region located above the first insulating layer and having a channel formation region for a transistor, A first conductive layer having a region in contact with the upper surface of the semiconductor layer and a region that functions as either the source electrode or the drain electrode of the transistor, A second insulating layer having a region located above the first conductive layer, A second conductive layer having a region located above the second insulating layer and a region that functions as a common electrode, A third insulating layer having a region located above the second conductive layer, A third conductive layer having a region in contact with the upper surface of the third insulating layer and a region that functions as a pixel electrode, A fourth conductive layer having a region in contact with the upper surface of the third insulating layer and made of the same material as the third conductive layer, A fifth conductive layer having a region located below the second insulating layer and having a region that functions as touch sensor wiring, The second conductive layer has a region that overlaps with the semiconductor layer, The third conductive layer has a region that overlaps with the semiconductor layer, The fourth conductive layer has a region in contact with the fifth conductive layer, The fourth conductive layer has a region that overlaps with the second conductive layer in the region where the fifth conductive layer and the second conductive layer overlap, The fourth conductive layer has a region that overlaps with the sixth conductive layer, which is electrically connected to the semiconductor layer and has a region that functions as a source wiring. The sixth conductive layer has a region extending in the first direction, In a plan view, the semiconductor layer has a region located between the sixth conductive layer and the seventh conductive layer having a region extending in the first direction.

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