30results about How to "Suppress afterimage" patented technology

Provided is a liquid crystal display device capable of preventing the occurrence of a residual image. The liquid crystal display device is provided with a first substrate and a second substrate which are disposed to face each other, and a liquid crystal layer sandwiched between the first substrate and the second substrate. The first substrate comprises a comb-shaped first electrode including first branch portions and a comb-shaped second electrode including second branch portions, and the first electrode and the second electrode are disposed to planarly face each other in a pixel. The liquid crystal layer includes p-type nematic liquid crystal and is driven by an electric field generated between the first electrode and the second electrode. The p-type nematic liquid crystal is aligned perpendicularly to the first substrate and the second substrate when no voltage is applied. The first branch portions and the second branch portions extend diagonally to boundaries between adjacent pixels, and the intervals between the first electrode and the second electrode in a region surrounding the tip of the first branch portion are substantially equal.

The invention provides an OLED (Organic Light Emitting Diode) pixel circuit, a driving method thereof and a display device and belongs to the display technological field. With the OLED (Organic LightEmitting Diode) pixel circuit, the driving method thereof and the display device adopted, the problem of afterimages appearing on an OLED display caused by the increase of the formation time and cut-off time of the channel of a driving transistor. The OLED pixel circuit of the invention includes a data write-in and compensation module, a first driving module, a second driving module, a light emitting control module, and a light emitting module; the data write-in and compensation module is connected with the first driving module, a first signal end, and a data signal end and is used for compensating the threshold voltage of the first driving module; the first driving module is connected with the light emitting control module and a first voltage end and is used used for driving the light emitting module after the compensation of the threshold voltage is realized; the second driving module is connected with the first driving module, the light emitting control module and the first voltageend and is used for driving the light emitting module; the light emitting control module is further connected with the light emitting module and a second signal end and is used for making the first driving module and the second driving module connected with the light emitting module; and the light emitting module is used for emitting light under the common driving of the first driving module and the second driving module.

A residual image effect is suppressed to improve quality of display of an active matrix type display device. An electric potential switching circuit switches an electric potential on a capacitor line from a first capacitor electric potential (ground electric potential, for example) to a second capacitor electric potential (power supply electric potential, for example) during a blanking period. At that time, an electric potential at a gate of a driver transistor is raised by capacitive coupling through a storage capacitor. As a result, the electric potential at the gate of the driver transistor becomes higher than an electric potential at a source of the driver transistor. Assuming that holes are trapped in a gate insulation film of the driver transistor due to writing-in of a display signal during a preceding frame period, the holes are extracted from the gate insulation film to the source or a drain of the driver transistor. With this, electric characteristics of the driver TFT are initialized. And the electric potential switching circuit switches the electric potential on the capacitor line back to the first capacitor electric potential from the second capacitor electric potential before an end of the blanking period.

Provided are a liquid crystal orientation film with which it is possible to alleviate an afterimage resulting from AC driving which occurs with an IPS drive format or an FFS drive format liquid-crystal display element, and a liquid crystal orientation liquid for a light orientation processing technique for said film. A liquid crystal orientation liquid for a light orientation processing technique includes a constituent (A), a constituent (B), and an organic solvent, wherein the degree of inclusion of the constituent (B) is 0.1-15 parts to 100 parts of the constituent (A). Constituent (A): one or more polymers, wherein by illuminating with polarized light, one of the following reactions progresses: photolysis, photodimerization, or photoisomerization, and wherein an anisotropy is applied in either the same direction as the polarized light direction or the perpendicular direction to the polarized light direction. Constituent (B): a polymer having a structure which is represented with formula (1), following: (Chemical Formula 1) (Wherein W1 and W2 are independent bivalent organic groups including an aromatic group with 6-30 carbons, and A is a bivalent organic group including an alkylene group with 2-20 carbons.

The invention relates to the technical field of liquid crystal display, in particular to an alignment layer set, a manufacturing method thereof, a substrate and a display device. The alignment layer set comprises friction alignment layers and smooth alignment layers, wherein the friction alignment layers and the smooth alignment layers are arranged on the upper surface of the substrate in the direction far away from the upper surface of the substrate, and the orientation of the friction alignment layers is identical with that of the smooth alignment layers. According to the alignment layer set, the manufacturing method thereof, the substrate and the display device, a structure of combining the smooth alignment layers and the friction alignment layers is adopted, and the purposes of improving the contrast ratio of liquid crystal panels and simultaneously restraining the generation of residual images to improve the display quality of the liquid crystal panels are achieved by covering detects generated in the friction alignment layers through the smooth alignment layers and by using the anchoring energy of the friction alignment layers for compensating the defect that the smooth alignment layers are poor in anchoring engine.

Provided is a method for producing a photoalignment liquid crystal alignment film which is capable of minimizing afterimages resulting from AC driving. Polarized radiation is applied to a film obtained by applying and sintering a liquid crystal alignment agent, which contains at least one type of polymer selected from a group comprising polyimide precursors represented by formula (1) and imidized polymers of said polyimide precursors, on a substrate. After the film has been brought into contact with an organic solvent having a boiling point of 110 to 180°C, the film is then brought into contact with water or a water-soluble organic solvent having a boiling point of 50 to 105°C before being treated with heat at 150°C or above. (X1 represents the formula (XA-1); Y1 represents a divalent organic group; R1 represents H or the like; and R3 to R6 represent H or the like.)

The invention provides an actuating device for a plasma display, which is characterized in that: the actuating device comprises an image detection module which is used for judging whether the imaged displayed by the display is in one of a long-term static mode, a dynamic mode, and a mode from the static mode to the dynamic mode and outputting a judgment result; and a driving control module which is used for setting the actuating mode according to the judgment result output from the image detection module; by adopting the invention, the purpose of inhibiting residual images is achieved, and the adaptability of PDP display devices in various occasions can be improved.

The invention provides a liquid crystal aligning agent, a liquid crystal alignment film and a liquid crystal display element. The liquid crystal aligning agent at least comprises one of a polyamide acid solution and a polyimide solution, wherein the polyamide acid solution is obtained by carrying out polymerization reaction of a diamine compound component A and a dianhydride compound component B in a solvent; the polyimide solution is obtained by carrying out dehydration imidization treatment on the polyamide acid solution; the diamine compound component A at least comprises one of diamine compounds as shown in formula 1. The liquid crystal aligning agent disclosed by the invention has relatively good liquid crystal aligning capability, an excellent ghost effect and an effect of easily removing decomposition products after photo-alignment.

The present invention relates to a liquid crystal display device which has a polymer layer that is formed on an alignment film and controls the alignment of liquid crystal molecules adjacent thereto. The polymer layer is formed by polymerizing monomers that are added into a liquid crystal layer, and the monomers are compounds represented by general formula (I). P1-A1-(Z1-A2)n-P2 (I) (In the formula, P1 and P2 may be the same as or different from each other and each represents an acrylate group or a methacrylate group; in cases where there are a plurality of Z1 moieties, the Z1 moieties may be the same as or different from each other and each represents COO, OCO or O, or alternatively represents that A1 and A2 or A2 and A2 are directly bonded with each other; a hydrogen atom may be substituted by a halogen atom, a methyl group, an ethyl group or a propyl group; and A1 and A2 may be the same as or different from each other and each represents a specific phenanthrene group.) The light source of a backlight is composed of at least one light emitting diode, and each light emitting diode substantially emits only such light that has a wavelength of 400 nm or more.

To improve the display quality of a moving picture by performing a hold-type display of a liquid crystal, etc. using an impulse-type response. A selection voltage is applied to a selected scanning line during an effective horizontal scan period, and a voltage corresponding to the brightness of a pixel corresponding to an intersection with the selected scanning line is applied to one data line. During a horizontal flyback period when another scanning line is selected, a selection voltage is applied to the selected scanning line and a voltage allowing the pixel to display black as the least brightness is applied to the data line. As a result, the display of the pixel is erased and the data lines are precharged with the voltage erasing the display, for preparation of the subsequent writing operation.

A LCD panel includes a LC layer, an active-matrix substrate including an electrode layer for applying a lateral electric field to the LC layer, and a counter substrate opposing the active-matrix substrate with an intervention of the LC layer 11. The active-matrix substrate includes a first alignment film formed in the surface which touches the LC layer 11 by the rubbing technique is formed, and second alignment film 35 formed in the surface which touches the LC layer 11 by the particle beam glaring technique is formed on the counter substrate 13.

In writing performed at a start pulse DY1, the writing is performed with a positive-polarity voltage, and, in writing performed at a start pulse DY2, the writing is performed with a negative-polarity voltage. In writing performed at start pulses DYR1 and DYR2, the writing is performed with a voltage that turns pixels into black of minimum gradation. Since a period in which the positive-polarity voltage is retained is different from a period in which the negative-polarity voltage is retained, a direct-current component which is applied to a liquid crystal capacitor is cancelled, whereby the occurrence of burn-in is prevented.

A storage capacitor line potential switching circuit 101 switches potential of a storage capacitor line 217 from first potential Vsc1 to second potential Vsc2 higher than the first potential Vsc1, and at the same time, a power source potential switching circuit 102 switches potential of a power source line 215 from first power source potential PVdd1 to second power source potential PVdd2 lower than the first power source potential PVdd1. By a synergistic effect of them, gate potential Vg of a TFT 214 for drive becomes higher than threshold Vtp to its source potential. If a positive hole is trapped to a gate insulating film of the TFT 214 for drive by writing of a display signal D in the previous time, the positive hole is extracted from the gate insulating film to a source or a drain. Thus, electronic characteristics of the TFT 214 for drive are initialized.

Provided is a liquid crystal alignment agent containing at least one polymer selected from among polyimide precursors and polyimides that are imidized products thereof obtained from: a tetracarboxylicacid derivative component containing at least one substance selected from among a tetracarboxylic acid dianhydride represented by formula (1) and derivatives thereof and at least one substance selected from among a tetracarboxylic acid dianhydride represented by formula (2) and derivatives thereof; and a diamine component containing at least one diamine selected from between formulas (3) and (4).

The invention provides a pixel circuit, a driving method thereof and a display panel. The pixel circuit includes: a light emitting element; a driving sub-circuit configured to generate a current for causing the light emitting element to emit light; a first light-emitting control sub-circuit and the second light-emitting control sub-circuit, respectively configured to supply current for enabling the light-emitting element to emit light to the first end of the light-emitting element under the control of a first control signal; a driving control sub-circuit, configured to provide the data voltagesignal to the driving sub-circuit under the control of the second control signal; and a reset sub-circuit, configured to use the second voltage to reset the driving sub-circuit, the first end of thelight-emitting element and the second node under the control of the first reset signal and the second reset signal.

A liquid crystal display device which implements a pause-drive technique, wherein flickering is effectively suppressed while also suppressing increases in power consumption. When a frame, to which an image signal (DAT) is inputted from the outside without outputting a request signal (RO) that makes a request to the outside for the input of the image signal (DAT), is defined as a first input frame, an inversion drive control unit (10) specifies that the first input frame is a refresh frame defined as a first refresh frame, also specifies that the inversion drive technique of the first input frame is the column inversion drive technique, specifies that the three frames following the first refresh frame are pause frames, specifies that the frame following the final pause frame is a refresh frame defined as a second refresh frame, and specifies that the inversion drive technique of the second refresh frame is the dot inversion drive technique.

The invention relates to the technical field of liquid crystal display, in particular to an alignment layer set, a manufacturing method thereof, a substrate and a display device. The alignment layer set comprises friction alignment layers and smooth alignment layers, wherein the friction alignment layers and the smooth alignment layers are arranged on the upper surface of the substrate in the direction far away from the upper surface of the substrate, and the orientation of the friction alignment layers is identical with that of the smooth alignment layers. According to the alignment layer set, the manufacturing method thereof, the substrate and the display device, a structure of combining the smooth alignment layers and the friction alignment layers is adopted, and the purposes of improving the contrast ratio of liquid crystal panels and simultaneously restraining the generation of residual images to improve the display quality of the liquid crystal panels are achieved by covering detects generated in the friction alignment layers through the smooth alignment layers and by using the anchoring energy of the friction alignment layers for compensating the defect that the smooth alignment layers are poor in anchoring engine.

A residual image effect is suppressed to improve quality of display of an active matrix type display device. A capacitor line electric potential switching circuit switches an electric potential of a capacitor line from a first capacitor electric potential Vsc 1 to a second capacitor electric potential Vsc 2 that is higher that the first capacitor electric potential Vsc 1 , while a power supply electric potential switching circuit switches an electric potential of a power supply line from a first power supply electric potential PVdd 1 to a second power supply electric potential PVdd 2 that is lower than the first power supply electric potential PVdd 1 . As a result of synergistic effect, an electric potential Vg at a gate of a driver TFT becomes higher than an electric potential at its source by more than a threshold voltage Vtp of the driver TFT. Assuming carriers are trapped in a gate insulation film of the driver TFT due to writing-in of a display signal in a preceding frame period, the carriers are extracted from the gate insulation film to the source or a drain of the driver TFT. With this, electric characteristics of the driver TFT are initialized.

To improve the display quality of a moving picture by performing a hold-type display of a liquid crystal, etc. using an impulse-type response. A selection voltage is applied to a selected scanning line during an effective horizontal scan period, and a voltage corresponding to the brightness of a pixel corresponding to an intersection with the selected scanning line is applied to one data line. During a horizontal flyback period when another scanning line is selected, a selection voltage is applied to the selected scanning line and a voltage allowing the pixel to display black as the least brightness is applied to the data line. As a result, the display of the pixel is erased and the data lines are precharged with the voltage erasing the display, for preparation of the subsequent writing operation.

The invention provides an actuating device for a plasma display, which is characterized in that: the actuating device comprises an image detection module which is used for judging whether the imaged displayed by the display is in one of a long-term static mode, a dynamic mode, and a mode from the static mode to the dynamic mode and outputting a judgment result; and a driving control module which is used for setting the actuating mode according to the judgment result output from the image detection module; by adopting the invention, the purpose of inhibiting residual images is achieved, and the adaptability of PDP display devices in various occasions can be improved.

The present invention provides: a liquid crystal alignment agent that has excellent thermal stability and solvent solubility; and a liquid crystal panel that allows inhibition of generation of ghosting and stains and inhibition of decrease of contrast even in high-temperature environments over a long time period. The present invention is a liquid crystal alignment agent that includes: a solvent; and a copolymer including a structure represented by chemical formula (1). In the formula, X represents a specific structure that includes a cyclic hydrocarbon group, Y1 represents a specific structurethat includes a cyclic hydrocarbon group, R1 represents a horizontal alignment group, a vertical alignment group, or a photoreactive functional group, and Z1 and Z2 are the same or different from each other and each represent a -NH-group, an -O-group, or an -S-group.

The invention discloses an active component array substrate, which comprises a substrate, a plurality of scanning lines, a plurality of data lines and a plurality of pixels. The scanning lines and the data lines are configured on the substrate; each pixel comprises a plurality of sub-pixels; and each sub-pixel comprises at least one transistor, a pixel electrode and a color filter film. The transistor is configured on the substrate and is electrically connected with a corresponding scanning line and a corresponding data line; partial color filter film is positioned between the pixel electrodeand the scanning line; and the pixel electrode and a corresponding scanning line are coupled into a first capacitor, and the drain of the transistor and a corresponding scanning line are coupled intoa second capacitor. In a single pixel, the coupled areas of pixel electrodes and the scanning lines corresponding to different color filter films are different, so that the first capacitors are essentially same.

A residual image effect is suppressed to improve quality of display of an active matrix type display device. A capacitor line electric potential switching circuit switches an electric potential of a capacitor line from a first capacitor electric potential Vsc 1 to a second capacitor electric potential Vsc 2 that is higher that the first capacitor electric potential Vsc 1 , while a power supply electric potential switching circuit switches an electric potential of a power supply line from a first power supply electric potential PVdd 1 to a second power supply electric potential PVdd 2 that is lower than the first power supply electric potential PVdd 1 . As a result of synergistic effect, an electric potential Vg at a gate of a driver TFT becomes higher than an electric potential at its source by more than a threshold voltage Vtp of the driver TFT. Assuming carriers are trapped in a gate insulation film of the driver TFT due to writing-in of a display signal in a preceding frame period,the carriers are extracted from the gate insulation film to the source or a drain of the driver TFT. With this, electric characteristics of the driver TFT are initialized.

An image processing device is constituted by a device for detecting motion of the subject, with the entire effective pixel region as a range; a device for successively setting each of the pixels in the effective pixel region as a pixel of interest; a device for detecting motion of the subject, with a local pixel region that includes the successively set pixel of interest as a range; a device for, for each of the pixels of interest, determining a mixing ratio for the pixel signal of the current imaging period and the pixel signal of one imaging period earlier based on the two detection results; and a device for, for each of the pixels of interest, correcting the pixel signal of the current imaging period based on the determined mixing ratio.