38results about How to "Improve afterimage" patented technology

In a method of forming a liquid crystal display device, a black matrix is disposed on a substrate including a switching element formed thereon, a color filter is disposed on the switching element, a pixel electrode is electrically connected to the switching element, and a first alignment layer is disposed on the pixel electrode, to form a first substrate. A second substrate including a second alignment layer is formed. At least one of the first alignment layer and the second alignment layer includes a reactive mesogen. A liquid crystal layer is interposed between the first substrate and the second substrate. A light is irradiated onto the second substrate to provide pretilt angles of liquid crystal molecules of the liquid crystal layer.

Provided are a view-angle-switchable liquid crystal display device and a driving method. The liquid crystal display device comprises a display panel, the display panel comprises a first substrate, a second substrate opposite to the first substrate, and a liquid crystal layer located between the first substrate and the second substrate. A view angle control electrode is arranged on the first substrate and used for controlling the display panel to be switched between a wide view angle mode and a narrow view angle mode, a plurality of sub-pixels are defined on the second substrate through scanning lines and data lines, and a pixel electrode is arranged in each sub-pixel of the second substrate. A common electrode is further arranged on the second substrate, the view angle control electrode comprises a plurality of insulated and separated view angle control electrode strips, and each view angle control electrode strip extends in the direction parallel to the scanning lines and corresponds to a row of sub-pixels. According to the liquid crystal display device and the driving method, the problems about residual shadows and in-face Mura can be effectively relieved, so that the image quality is improved.

The invention discloses an array substrate, a manufacturing method of the array substrate and a display device. The array substrate comprises a first pattern layer and a second pattern layer which are sequentially arranged on a substrate base plate. An organic insulating layer is arranged between the first pattern layer and the second pattern layer. The first pattern layer comprises a grid electrode of a thin film transistor, a grid line and data lines, wherein the grid electrode is connected with the grid line, the data lines are cut off through the grid line, and the data lines and the grid line are insulated and separated. The second pattern layer comprises a source electrode of the thin film transistor, a drain electrode of the thin film transistor and connection portions, wherein the source electrode is connected with the data lines, the data lines correspond to the connection portions respectively, and each connection portion is used for connecting the portions, located on the two sides of the grid line, of the corresponding data line. By means of the array substrate, the manufacturing method and the display device, the parasitic capacitance of the source electrode, the drain electrode and the grid electrode can be reduced, the overlap capacitance of the grid line and the data lines can be recued, and therefore the signal delay is reduced, the power consumption is lowered, and the residual image phenomenon can be eliminated.

The invention provides an array substrate, a production method thereof, a display panel, and a display device, and relates to the display technology field. The array substrate comprises a substrate; an auxiliary shade layer, an insulation layer, a main shade layer, and a buffer layer, which are sequentially arranged in a direction away from the substrate. A plurality of grid lines and a plurality of data lines are used to form a plurality of pixel areas in a limited way, and thin film transistors are disposed in the pixel areas. The auxiliary shade layer comprises a plurality of first auxiliary shade parts, and the main shade layer comprises a plurality of main shade parts. The orthogonal projection of the channel areas of the active layers of the thin film transistors on the array substrate is disposed in the orthogonal projection of the main shade parts on the array substrate, and the orthogonal projection of the channel areas of the active layers of the thin film transistors on the array substrate is disposed in the orthogonal projection of the first auxiliary shade parts on the array substrate. By adopting the technical scheme provided by the invention, intensities of light irradiated on the channel areas of the active layers of the thin film transistors are reduced, and the light leakage flows of the thin film transistors are reduced.

The invention discloses a pixel circuit, a driving method thereof and a display panel. The pixel circuit comprises a driving transistor, a first light-emitting control module, a light-emitting moduleand a black frame insertion control module, the first light-emitting control module is used for being turned off in part of time periods of a light-emitting stage under the control of a light-emittingcontrol signal, and the driving transistor is used for driving the light-emitting module to emit light when the first light-emitting control module is turned on. The black frame insertion control module is used for writing a preset voltage into the first electrode of the driving transistor under the control of a first scanning signal and the light-emitting control signal in the black frame insertion stage that both the first light-emitting control module and the data writing module are turned off, wherein in at least part of the time period of the black frame insertion stage, the voltage difference value between the gate voltage of the driving transistor and the preset voltage and the voltage difference value between the gate voltage of the driving transistor and the first electrode voltage being positive and negative when the driving transistor is turned on. According to the technical scheme, the problems of ghost shadows and driving current reduction can be solved.

The embodiment of the invention discloses a pixel circuit and a driving method thereof. The driving method comprises the following steps: acquiring gray scale data of a pixel circuit in two adjacent display frames, wherein the gray scale data comprises a display gray scale and a corresponding data voltage; calculating a data voltage corresponding to the black insertion gray scale according to thegray scale data corresponding to at least the previous display frame in the two adjacent display frames; in a black insertion stage between two adjacent display frames, writing a data voltage corresponding to a black insertion gray scale into a grid electrode of a driving transistor of the pixel circuit, writing a first power supply voltage into a first electrode of the driving transistor, and providing a turn-off control signal for a light emitting control module in the pixel circuit. According to the technical scheme provided by the embodiment of the invention, the bias voltage is applied tothe driving transistor after the previous display frame in the two adjacent display frames is displayed, so the hysteresis of the driving transistor is reset, and the hysteresis effect caused by thechange of the data voltage of the grid electrode of the driving transistor during switching of different gray-scale pictures is reduced; therefore, the ghosting problem is improved.

A liquid crystal display device includes a liquid crystal panel; a gamma voltage supplying unit establishing a gamma voltage corresponding to each gray level according to a predetermined T-V curve; and a data driving unit changing digital image data into analog image data using the gamma voltage and outputting the analog image data to the liquid crystal panel, wherein the gamma voltage corresponding to a black level is configured to have a value within a range of 0 V to 0.005 V.

The invention discloses a liquid crystal aligning agent. The liquid crystal aligning agent comprises a polymer (A) and a polymer (B). The polymer (A) is polyimide-polyamid-acid with side-chain diamine. The polymer (B) is polyamid-acid with side-chain diamine. The liquid crystal aligning agent provided in the invention has the characteristics of tilt angle stability, excellent haptic performances and shadow problem alleviation.

The embodiment of the invention discloses a pixel circuit driving method, a pixel circuit comprises a driving transistor, and the method comprises the steps: obtaining the theoretical threshold voltage of the driving transistor and the actual threshold voltage of the driving transistor under different gray scales; determining compensation data voltages under different gray scales according to thetheoretical threshold voltage of the driving transistor and the actual threshold voltages under different gray scales; and driving the pixel circuit to emit light according to the compensation data voltage. The problems of current difference and brightness difference caused by insufficient charging time are solved, the phenomena of uneven display and ghost shadows are further improved, and the display effect of the device is improved.

The invention relates to a liquid crystal composition and application thereof.The liquid crystal composition comprises at least one compound shown in the general formula I and at least one compound shown in the general formula II, the compound shown in the general formula I serves as an additive to be added into the liquid crystal composition, and the additive is matched with a negative liquid crystal monomer shown in the general formula II; the liquid crystal composition can maintain low-temperature intersolubility (even better) on the premise that the liquid crystal composition has proper optical anisotropy and dielectric anisotropy, high clearing point and low rotational viscosity, and on the basis, the liquid crystal composition also has high voltage holding ratio, low liquid crystal conductivity, high ion dissipation speed and remarkably improved liquid crystal reliability; ghost shadow improvement is obvious, and the liquid crystal material is a liquid crystal material with high reliability and good stability, and is suitable for display modes such as IPS, NFFS, VA, PSVA and the like.

An embodiment of the invention discloses a display panel and a driving method thereof.The display panel comprises m scanning circuits, in the m scanning circuits, the jth scanning circuit is electrically connected with the dm + jth scanning line in the second direction, and m is larger than or equal to 2; and the driving chip controls any one of the m scanning circuits to output a scanning pulse signal in each frame under the display mode of m times of basic refresh frequency, so that only 1/m pixel circuits in the display panel perform writing of data signals and emit light in each frame under the display mode of m times of basic refresh frequency. According to the display panel, on the basis of not changing the bandwidth of the driving chip and ensuring the charging time of the capacitorin the pixel circuit, the refreshing frequency of the display panel can be improved, and the problems of flickering and ghosting of the display panel are further improved.

The invention discloses a mean noise reduction rapid processing circuit and method suitable for an image sensor, and the circuit comprises a CDS operation circuit capable of controlling the addition and subtraction, and the input end of the CDS operation circuit capable of controlling the addition and subtraction is connected with an ADC conversion circuit. The first output end of the CDS operational circuit capable of controlling addition and subtraction is connected with the input end of the CDS operational circuit capable of controlling addition and subtraction, and the second output end of the CDS operational circuit capable of controlling addition and subtraction is connected to an ISP image signal processor; the CDS operation circuit capable of controlling addition and subtraction is used for obtaining the sum of multiple sampling CDS voltage difference values when one frame of image pixel is read out in a cyclic addition and subtraction operation combination mode. According to the invention, an average value can be obtained when pixels of a frame of image are read out, so that the time for signal transmission and image processing is greatly reduced; and the pixels in the same row are sampled for multiple times for calculation, and the sampling time interval is very short, so that ghosting cannot be caused.

The invention relates to a liquid crystal composition and application thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I, and at least one compound as shown in a general formula II-1 and/or at least one compound as shown in a general formula II-2, the liquid crystal composition provided by the invention can maintain VHR-initial and low-temperature storage performance at a stable level on the premise of proper optical anisotropy and dielectric anisotropy, relatively high clearing point, relatively low rotational viscosity and relatively high Kave value, and has remarkably lower conductivity I/V value and higher ion dissipation speed, the ghost shadow of a liquid crystal panel can be effectively improved, and the reliability is higher.

A LCD quick gray scale conversion method comprises steps: divide the LCD drive grid line zone to complex zones and frame interval time to complex subintervals accordingly; within time of a synchronous control signal, start first grid lines of every zone by turns, then the hypo grid line, and repeat; wherein, at least one group grid lines supply data voltage for video data and voltage for displaying black picture; repeat, until end interval time of entire frame and come into next frame interval. By division to time and space, it comes to purpose of gray scale conversion quickly, and fit to image process of all kinds of LCD and OLED display.

The invention discloses a driving method for compensating Data signals to improve panel ghosting, which comprises the following steps of: S1, selecting a group of Data wires, adding a detection circuit from the in-plane Data wires controlled by each Demux in the group, and connecting the detection circuit to a detection circuit in an IC (Integrated Circuit); s2, the detection circuit judges whether the Data signal input into the plane by the IC of each gray scale from 0 to 255 is the same as the Data signal output by the IC; if the signals are consistent, the data signals are not changed, if the signals have differences, the control circuit changes the Data signals according to the differences, the signals which are abnormally pulled up after being coupled by the Demux signals originally are pulled down reversely, then the changed Data correction signals are transmitted to the output circuit, and the output circuit outputs the Data correction signals; and S3, after the Data correction signal passes through the Demux signal couple, the voltage of the lowered part is increased by the couple, and the Data signal input into the plane is recovered to be normal. According to the invention, by changing the Data signal, the coupled of the Data signal by the Demux signal can be effectively reduced, and the panel ghosting is improved.

The invention provides a display panel and a display device.The display panel comprises an array substrate, a color film substrate and a liquid crystal layer, the array substrate is sequentially provided with a common electrode layer, a first insulating layer, a pixel electrode layer and an alignment layer, the display panel comprises a plurality of sub-pixel units arranged in an array mode, each sub-pixel unit comprises a pixel electrode, and the pixel electrode is arranged on the first insulating layer. The array substrate comprises a first insulating layer, a plurality of scanning lines extending in the first direction and a plurality of data lines at least partially extending in the second direction, the first direction intersects with the second direction, the first insulating layer is provided with at least one first penetrating part, and in the second direction, the orthographic projection of the first penetrating part on the array substrate is at least located in the area between partial two adjacent pixel electrodes. And in an area corresponding to the first penetrating part, the alignment layer is in contact with the common electrode. According to the invention, the ghosting of the display panel can be improved, and the brightness uniformity of the display panel and the display device can be ensured.

The invention relates to a liquid crystal composition and application thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I and at least one compound as shown in a general formula II, according to the liquid crystal composition, the additive shown in the general formula I is added into the liquid crystal composition, and the additive and the dibenzo compound shown in the general formula II are matched with each other, so that the obtained liquid crystal composition has good optical anisotropy and dielectric anisotropy, relatively high clearing point and relatively low rotational viscosity, and in addition the liquid crystal composition can maintain low-temperature intersolubility (even better), has high voltage holding ratio, low liquid crystal conductivity, fast ion dissipation speed, obviously improved liquid crystal reliability and obviously improved ghost shadow on the basis, is a liquid crystal material with high reliability and good stability, and is suitable for various liquid crystal display modes.