193results about How to "Reduce afterimage" patented technology

An organic light-emitting diode display device includes a first switch element turned-on in response to a first scanning signal during a first period to supply a data to a first node, and then maintaining an off-state during a second period, a driving device adjusting a current through an organic light-emitting diode element in accordance with a voltage of the first node; a reference voltage source providing a reference voltage that is capable of turning-off the driving device, a second switch element maintaining an off-state during the first period, and turned-on during the second period to supply the reference voltage to the first node, and a storage capacitor maintaining the voltage at the first node.

A sensor device includes sensor elements two-dimensionally arranged and a sensor driving section driving the sensor elements. Each of the sensor elements includes a photoelectric conversion element generating electric charge according to an amount of received light, a charge storage section connected to one end of the photoelectric conversion element and storing electric charge generated by the photoelectric conversion element, a readout section reading either a voltage value resulted from the electric charge in the charge storage section or the stored electric charge, to output the read voltage value or the read electric charge and a reset section resetting the electric charge in the charge storage section through supplying a predetermined reset voltage to the charge storage section. The sensor driving section controls the reset section so that the predetermined reset voltage is continuously or intermittently supplied to the charge storage section over a period exceeding one horizontal scan period.

The invention discloses a solid-state imaging device, a drive method thereof and an electronic apparatus using the same. A solid-state imaging device includes: plural photodiodes formed in different depths in a unit pixel area of a substrate; and plural vertical transistors formed in the depth direction from one face side of the substrate so that gate portions for reading signal charges obtained by photoelectric conversion in the plural photodiodes are formed in depths corresponding to the respective photodiodes. The electronic apparatus using the solid-state imaging device has increased saturated charge quantity (Qs), improved sensitivity and reduced pixel size. The drive method of the solid-state imaging device can reduce the pseudo color, image retention, noise and color mixture and improve the sensitivity.

The invention discloses a device for controlling the displaying time of a static picture and an implementation method thereof. The device comprises a video stream input module, a data extraction module, a frame buffering module, a frame latching module, a comparison module, a control operation module, a pixel processing module and a video stream output module, and the device further comprises a communication module. The invention further discloses an implementation method for the device, which comprises the following steps: initializing the modules; carrying out the frame latching operation on a data-displaying frame; and judging whether the displaying data of the frame buffering module and the frame latching module are consistent, if so, judging whether the displaying time of the static picture exceeds the predetermined threshold, and carrying out the frame-inserting operation or pixel-shifting operation, and if not, re-latching the data frame. By accurately measuring the displaying time of the static picture and carrying out the corresponding avoiding operations, the invention can prevent a plasma display panel from displaying static pictures and high-brightness pictures for a long time, prolongs the service life of the plasma display panel, effectively reduces the remnant shade problems of the plasma display panel and greatly reduces the workload of development.

The invention provides a liquid crystal display. In the liquid crystal display, a first alignment layer formed on a first substrate includes a first region aligned in a first direction and a second region aligned in a second direction opposite to the first direction, and a second alignment layer formed on a second substrate facing the first substrate includes a third region aligned in a third direction different from the first direction and a fourth region aligned in a fourth direction opposite to the third direction. The liquid crystal molecules interposed between the first and second alignment layers are aligned in different directions in different domains defined by the first to fourth regions. A pixel electrode includes an extension part extending in at least one of the first to fourth directions. The aperture ratio and the light transmittance of the liquid crystal display are improved.

The present application relates to a liquid crystal display including a first substrate, a plurality of gate lines, a plurality of data lines, thin film transistors connected to the gate and data lines, a barrier rib formed on the data lines, and pixel electrodes connected to the thin film transistors. The thin film transistors can be formed using a colored organic film that has an optical density in a range of 1 to 3. Color filters fill the regions surrounded by the barrier rib. Pixel electrodes can be formed on the color filters. A common electrode can be formed on the second substrate facing the first substrate. A liquid crystal layer can be situated between the first and second substrates, which are spaced apart at a predetermined distance by spacers.

The invention provides a sensor device, a driving method, a display device, an electronic unit and an image pickup device. The sensor device includes sensor elements two-dimensionally arranged and a sensor driving section driving the sensor elements. Each of the sensor elements includes a photoelectric conversion element generating electric charge according to an amount of received light, a charge storage section connected to one end of the photoelectric conversion element and storing electric charge generated by the photoelectric conversion element, a readout section reading either a voltage value resulted from the electric charge in the charge storage section or the stored electric charge, to output the read voltage value or the read electric charge and a reset section resetting the electric charge in the charge storage section through supplying a predetermined reset voltage to the charge storage section. The sensor driving section controls the reset section so that the predetermined reset voltage is continuously or intermittently supplied to the charge storage section over a period exceeding one horizontal scan period.

The invention relates to a device and method for reducing the ghosts of an OLED (organic light emitting display) panel. The device for reducing the ghosts of the OLED (organic light emitting display) panel includes a control unit, a detection unit and a display data arrangement unit; the control unit receives area control signals and time control signals, wherein the area control signals are used for determining the size and location of a target area, and the time control signals are used for determining a duration after which special display is carried out on the target area, a static pattern being displaying in the duration; the detection unit receives original image data, detects whether the static pattern exists in the target area, and transmits detected target area image information to the display data arrangement unit; and the display data arrangement unit receives the original image data, also receives the control signals of the control unit and the target area image information of the detection unit, and determines whether to start the special display of the target area. The invention also provides a corresponding method. With the device and method of the invention adopted, the ghosts can be decreased, and the overall display effect of the panel will not be affected.

An organic light-emitting diode display device includes a first switch element turned-on in response to a first scanning signal during a first period to supply a data to a first node, and then maintaining an off-state during a second period, a driving device adjusting a current through an organic light-emitting diode element in accordance with a voltage of the first node; a reference voltage source providing a reference voltage that is capable of turning-off the driving device, a second switch element maintaining an off-state during the first period, and turned-on during the second period to supply the reference voltage to the first node, and a storage capacitor maintaining the voltage at the first node.

The embodiment of the invention provides a flickering debug method and device of a liquid crystal display panel, pertaining to the technical field of display. By adjusting gray-scale voltage, flickering values of display images corresponding to multiple gray scales are minimized so that the possibility of flickering on display images during full gray-scale display is reduced. The flickering debug method comprises the following steps: applying initial common voltage to a common electrode and obtaining multiple sampling gray-scale voltage and one specific gray-scale voltage meeting the gamma curve; regulating voltage applied to the common electrode to determine that the common electrode when the display images are at the minimum flickering values is obtained on the condition that specific gray-scale voltage is applied to pixel electrodes; adjusting at least one sampling gray-scale voltage in obtained gray-scale voltage, measuring the flickering value of corresponding display images and taking gray-scale voltage corresponding to the minimum flicking value of corresponding display images as gamma reference voltage of corresponding gray scales.

The invention provides a television anti-ghost processing method, a television and a storage medium, and the method comprises the steps: detecting whether a display image on an OLED screen changes ina first preset time or not if an OLED screen of a television is in a lightened state; and if not, judging a display picture on the OLED screen as a static picture, and controlling the OLED screen to reduce the brightness according to a preset rule. According to the invention, the brightness of the OLED screen in a static picture is properly reduced; the pixel points on the OLED screen are not in ahigh-brightness state for a long time, the probability of ghost shadows is reduced, the fault rate of the ghost shadows of the OLED screen can be effectively reduced, and the service life of the OLEDscreen is prolonged while it is guaranteed that a user normally uses the OLED screen.

The invention relates to a TFT-LCD (Thin Film Transistor Liquid Crystal Display) array substrate and a manufacture method thereof. The array substrate comprises a grid line and data line which are formed on the substrate, a pixel region limited by the grid line and the data line is internally provided with a pixel electrode and a thin film transistor, and a shading pattern is arranged below the thin film transistor. The manufacture method comprises the steps of: depositing a shading film and a grid metal film, forming a pattern comprising the shading pattern, the grid line and the a grid electrode by using a composition process; depositing a grid insulation layer, a semiconductor film, a doped semiconductor film and a source / drain metal film, and forming a pattern comprising the data line, a drain electrode, a source electrode and a TFT channel through the composition process; depositing a passivation layer, and forming a passivation layer through hole pattern by using the compositionprocess; and depositing a transparent conductive film, and forming a pattern comprising the pixel electrode by using the composition process. By forming the shading pattern on the substrate and arranging the shading pattern below the thin film transistor, the invention effectively solves the technical defects generated by intensive residual images in the prior art.

Provided are a phosphor paste composition, a flat display device including the same, and a method of manufacturing the flat display device. The phosphor paste composition contains a phosphor with at least a heat-resistant material selected from a Group II atom-containing material, a Group III atom-containing material, and a Group IV atom-containing material, a binder, and an organic solvent. By using the phosphor paste composition, the deterioration of the phosphor can be prevented during a heat treating process. The flat display device includes a phosphor layer containing the phosphor coated with the heat-resistant material such that lifetime of the flat display device is increased and a permanent residual image phenomenon, the adsorption of water by the phosphor, and the like can be prevented.

The present invention relates to a liquid crystal display (LCD) device which is capable of improving picture quality by switching an optimal gamma voltage and an optimal common voltage on a basis of an operation time, and a method for driving the same. The liquid crystal display device includes a timing controller, a voltage generating unit, a data driver, and a liquid crystal panel. The timing controller can generate voltage control signal for switching initial state to stable state by using certain switching point. The voltage generating unit can receive the voltage control signal, supply the first gamma voltage and the first common voltage during the initial state, and supply the second gamma voltage and the second common voltage during the stable state. The data driver can receive the first gamma voltage in the initial state and the second gamma voltage in the stable state. The liquid crystal panel can suppress short-term residual image if the first gamma voltage and the first common voltage are supplied, and can suppress long-term residual image if the second gamma voltage and the second common voltage are supplied.

Provided is a liquid crystal display device that includes a liquid crystal layer sandwiched between two substrates, one of which includes a pixel electrode and a common electrode, where the electrode that is disposed closer to the liquid crystal layer has a stripe pattern that includes a plurality of slip electrode portions, and each of the plurality of slip electrode portions includes a curved portion at which each of the plurality of the slip electrode portions changes a stretching direction, and where the other electrode has a solid flat shape provided with a plurality of openings at locations that overlap with the curved portions of the plurality of slip electrode portions, the plurality of openings being provided in a manner that makes the opening in one curved portion independent and that allows only a convex outline segment of the slip electrode portion to run through an area of the opening.

This invention puts forward a driver of an array of semiconductor luminous cells including at least a current modulation unit containing multiple controllable switches for modulating volumes of each set serial current of the array, in which, the current volumes generate multiple feedback signals correspondingly via a feedback unit, a compensation unit generates related multiple control signals based on the input time sequence signals and the feedback signals to control said controllable switch, which can control the brightness and darkness and time sequence variance of the serial luminous cells.

An afterimage produced when a hold response display is used in an I / P conversion display mode is reduced. This is achieved by a display device comprising: a plurality of drain electrode lines and a plurality of gate electrode lines arranged in a matrix; and pixel areas, each surrounded by two adjacent ones of the drain electrode lines and two adjacent ones of the gate electrode lines, each pixel area having a TFT element, the assembly of the pixel areas defining a display area, wherein a drain electrode of the TFT element is electrically connected to the drain electrode line, a source electrode of the TFT element is electrically connected to a pixel electrode, the pixel electrode repeatedly receives a signal of positive polarity even or odd number of times and a signal of negative polarity the same number of times as the signal of positive polarity, and one or both of the occurrence of the signal of negative polarity and the signal of positive polarity are periodically changed to an odd number when the occurrence of the signal of positive polarity is an even number, or to an even number when the occurrence of the signal of positive polarity is an odd number.

In driving a liquid crystal display device, respective voltages of picture signals supplied in subframe periods are changed so as to enlarge a voltage difference between a gradation voltage of a picture signal supplied in the first subframe period and a gradation voltage of a picture signal supplied in the second subframe period.

A liquid crystal display including a first substrate; a second substrate facing the first substrate; a first field generating electrode disposed on the first substrate; a second field generating electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal and an alignment assistant, wherein the alignment assistant includes a mesogen and two or more photo-polymerizable groups.

The invention provides a three-dimensional display device and a display control method thereof. A plurality of back light units are controlled to be simultaneously opened when the back light units receive a drive signal of a frame in a display area which is on the lowest side and a liquid crystal in the display area on the lowest side completely reacts, and each of the back light units is closed when each of the back light units starts to receive a drive signal of another frame in a corresponding display area. The brightness of each display area is controlled through a drive current of each of the back light units which the display areas correspond to. By means of the three-dimensional display device and the display control method thereof, picturecrosstalk generated by the three-dimensional display device can be reduced, ghost shadows are reduced, the three-dimensional display effect is improved, and the experiencing effect of a user is promoted.

A method of driving a display panel includes generating a high pixel gamma voltage and a low pixel gamma voltage. At least one of the high pixel gamma voltage and the low pixel gamma voltage includes a positive gamma voltage and a negative gamma voltage having different values. The positive gamma voltage is a difference between a first gamma voltage higher than a common voltage and the common voltage. The negative gamma voltage is a difference between the common voltage and a second gamma voltage lower than the common voltage. A high pixel data voltage is generated based on the high pixel gamma voltage and the high pixel data voltage output to a high pixel. A low pixel data voltage is generated based on the low pixel gamma voltage and the low pixel data voltage is output to a low pixel.

[Problem]In the present invention, it is an object to improve display quality by improving response speed of a liquid crystal element in a liquid crystal display device, in particular, response speed in the case of falling. [Means for Solving the Problems]In the present invention, it is characterized that a liquid crystal layer is divided into plural regions (domains) substantially by mixing a chemical compound including a liquid crystal skeleton in a liquid crystal layer exisiting liquid crystal molecules as a technique to improve response speed of a liquid crystal element in a liquid crystal display device for solving the above problem.

Provided are a phosphor paste composition, a flat display device including the same, and a method of manufacturing the flat display device. The phosphor paste composition contains a phosphor with at least a heat-resistant material selected from a Group II atom-containing material, a Group III atom-containing material, and a Group IV atom-containing material, a binder, and an organic solvent. By using the phosphor paste composition, the deterioration of the phosphor can be prevented during a heat treating process. The flat display device includes a phosphor layer containing the phosphor coated with the heat-resistant material such that lifetime of the flat display device is increased and a permanent residual image phenomenon, the adsorption of water by the phosphor, and the like can be prevented.

A driving method of a display device comprising a display area including a plurality of pixels arranged in a matrix, comprising a first step and a second step. In the first step, a first signal is input to each of the plurality of pixels and a first image is displayed on the display area. In the second step, a second signal is input to each of the plurality of pixels; an afterimage that appears on the display area in the first step is erased; a second image is displayed on the display area. The second step is performed after the first step.

The invention provides a method and system reducing ghost shadows of an electronic ink screen. In a Partial mode, when refreshment is carried out between two same gray scales, one or more frames of the gray scales are added, a refreshing mode that a grey scale is compensated in the process of a grey scale to the grey scale is achieved, the effect of VCOM voltage of the electric ink screen is resisted, the electric ink screen is prevented from darkening, the ghost shadows are reduced, the display speed is not influenced, and thus the display effect is greatly improved.

The invention provides a method for manufacturing liquid crystal display panels, comprising the following steps: providing a first substrate, a second substrate and a liquid crystal layer, wherein, the liquid crystal layer comprises a liquid crystal component, a photosensitive molecule monomer and a photoinitiator; the liquid crystal display panel is provided with a plurality of pixels, and each pixel comprises a red sub-pixel, a green sub-pixel and a blue sub-pixel, then the liquid crystal display panel controls liquid crystal component to lead a plurality of liquid crystal molecules corresponding to the red sub-pixel in the liquid crystal component to be arranged along a first pretilt angle theta R, a plurality of liquid crystal molecules corresponding to the green sub-pixel to be arranged along a second pretilt angle theta G, and a plurality of liquid crystal molecules corresponding to the blue sub-pixel to be arranged along a third pretilt theta B, and the theta G is more than or equal to the theta B and is less than or equal to theta R, and polymerizes the photosensitive molecule monomer to form a stable alignment layer of a polymer between the liquid crystal layer and the first substrate and between the liquid crystal layer and the second substrate.

An afterimage produced when a hold response display is used in an I / P conversion display mode is reduced. This is achieved by a display device comprising: a plurality of drain electrode lines and a plurality of gate electrode lines arranged in a matrix; and pixel areas, each surrounded by two adjacent drain electrode lines and two adjacent gate electrode lines, each pixel area having a TFT element, the assembly of the pixel areas defining a display area, a drain electrode of the TFT element electrically connected to the drain electrode line, a source electrode of the TFT element electrically connected to a pixel electrode, a signal of positive polarity and a signal of negative polarity alternately applied to the pixel electrode a first frame number of times, wherein there is provided a specific period in which a signal of same polarity is applied in succession to the pixel electrode a second frame number of times that is greater than the first frame number, and in the specific period, a signal of a gray scale level lower than those in the first half and second half of the frames is applied.

The present invention relates to a handy scanner apparatus and a control method thereof, which scan the surface of the object under scan, larger than a scanner, into units of two-dimensional tile images each of which has a predetermined size, and synthesize the photographed images in accordance with shift information into final page images. Particularly, a scan unit comprises: a transparent window portion which forms an area of tile images to be scanned,a housing portion which prevents the introduction of light from an external source,a camera module which maintains a fixed optical distance from the object under scan, and photographs tile images,a lighting module which provides light only during a preset time in accordance with a lighting signal,and a shift sensing module which outputs shift information.,According to the present invention, the surface of the object under scan is scanned by units of two-dimensional tile images in which positions of pixels are physically fixed, to thereby achieve improved accuracy of positions of pixels. According to the present invention, the number of arithmetic operations required for image synthesis is reduced, thus enabling high speed signal processing, and the bottom surface of the housing portion can approach closely to the scanning area, thus maximizing a scannable area.

A liquid crystal display (“LCD”) device includes a first substrate, a pixel electrode, a second substrate, a common electrode and an alignment layer. The first substrate includes a thin-film transistor (“TFT”) and a plurality of pixel areas disposed on the first substrate. The pixel electrode is disposed on the TFT. The second substrate is disposed opposite to the first substrate. The common electrode is disposed on the second substrate. The alignment layer includes an insulation layer and a photoalignment layer, disposed on at least one of the pixel electrode and the common electrode.

Apparatus and method for correcting a tone of a panoramic image. An image processing apparatus may acquire, from an overlapping region of a left image and a right image, ghost information based on an optimal threshold and a cost map in which a similarity between the left image and the right image is reflected, may generate a tone correction map based on a global tone correction function generated using the ghost information in the overlapping region, and based on a local tone correction level generated using local information of an optimal seam, and may correct the left image and the right image using a final tone correction map generated by applying, to the tone correction map, a weighting based on the left image and a weighting based on the right image.