32results about How to "Solve afterimage problem" patented technology

The invention discloses a pixel circuit, a drive method therefor, a display panel, and a display device. The pixel circuit achieves the resetting of the grid electrode of a drive transistor at a firstresetting stage through a node resetting module, a data writing-in module is used for achieving the writing-in of a data signal and the compensation for a threshold voltage of the drive transistor atthe data writing-in stage, and a light-emitting control module is used for connecting a first voltage and a light-emitting diode at a light-emitting stage, thereby solving a non-uniform display problem caused by the drift, caused by the technology and the aging of the transistor, of the threshold voltage of the drive transistor through the internal compensation. Moreover, the light-emitting control module is used for the resetting of a first electrode of the drive transistor at the first resetting stage through the first voltage end, and a resetting module is used for the resetting of the grid electrode of the drive transistor at the first resetting stage, thereby guaranteeing that a grid-source voltage of the drive transistor is a constant value and is not affected by a former signal / image, and solving a problem of residual images.

The invention discloses a pixel circuit and a driving method thereof as well as a display device. The pixel circuit comprises a data writing-in module, a first light emitting control module, a secondlight emitting control module, a threshold compensation module, an anode resetting module, a capacitor module, a driving transistor and a light emitting diode; in a resetting phase, an anode of the light emitting diode is reset by utilizing the anode resetting module; meanwhile, the second light emitting control module is used for controlling the anode of the light emitting diode to be conducted with a second electrode of the driving transistor; the threshold compensation module is used for controlling a grid electrode of the driving transistor to be conducted with a first electrode of the driving transistor, so that voltage of a first electrode of the driving transistor is discharged toward the direction of the anode resetting module until the driving transistor is in a cut-off state; thus grid source voltage of the driving transistor keeps a constant value and is not influenced by a signal / picture of the last time, so that the residual image problem is solved.

The invention discloses a method for controlling image display. The method comprises: determining whether static images occur; when a static image occurs, obtaining practical gray level of each pixel in the static image, and generating multiple output gray levels corresponding to the practical gray level; using the output gray levels to alternatively replace the practical gray level to form dynamic image output. Through combining spatial domain and time domain, the method controls image display, the method processes the static image to dynamic image and output the dynamic image, so as to solve a problem of residual images of the static images.

The invention relates to a CMOS image sensor comprising a transistor and a photodiode, wherein the transistor comprises a grid dielectric layer and a grid electrode which are arranged on the surface of an epitaxial film in sequence and side walls arranged at both sides of the grid dielectric layer and the grid electrode in sequence, a doping well arranged in the epitaxial film at one side of the grid electrode, heavy-doping regions arranged in doping wells arranged at one side of the grid electrode and one sides of the side walls, and a threshold voltage regulation region arranged in the epitaxial film below the grid electrode, wherein the doping well surrounds an adjacent isolating structure, and the threshold voltage regulation region is adjacent to the doping well. The photodiode comprises a heavy-doping region arranged in the epitaxial film and a light-doping region arranged in the epitaxial film, wherein the heavy-doping region is a distance away from the adjacent isolating structure, the depth of the heavy-doping region is larger than that of the threshold voltage regulation region, and the heavy-doping region and the threshold voltage regulation region are partially overlapped; the conduction type of the light-doping region is opposite to that of the heavy-doping region, the depth of the light-doping region is smaller than that of the heavy-doping region and the light-doping region is adjacent to the isolating structure and the threshold voltage regulation region. The invention reduces the residual image of the image sensor, is suitable for the manufacture process of submicron layer, and has smaller drain current and simple manufacture process.

An embodiment of the invention provides a method and a device for determining driving voltages. The method includes determining an average value of a driving high voltage and a driving low voltage of each gray level according to a TFT-LCD (thin film transistor-liquid crystal display) pixel electrode jumping voltage of the gray level when a driving high voltage and a driving low voltage of a TFT-LCD are set; setting the driving high voltage and the driving low voltage of the TFT-LCD according to a relation curve of the average value of each gray level, a driving voltage of a source driving integrated circuit and the light transmittance of the TFT-LCD and a gamma curve of the TFT-LCD. The method and the device have the advantages that as an average value of the driving high voltage and the driving low voltage is determined according to the TFT-LCD pixel electrode jumping voltages, a phenomenon that driving voltages are asymmetrical due to the fact that a corresponding pixel electrode jumping voltage is different from the difference between an average value of a driving high voltage and a driving low voltage of each gray level and a reference voltage Vcom of an existing TFT-LCD is prevented, and the problem of residual images due to deviation of the pixel electrode jumping voltages of the existing TFT-LCD is solved.

The invention relates to the technical field of liquid crystal displaying and discloses a display substrate, a manufacturing method of the display substrate and a liquid crystal display panel. An ion barrier structure is arranged in a non-display area of the display substrate and used for preventing charged ions in the non-display area from being diffused to a display area, accordingly the problem that residual images are produced on the periphery of the display area can be effectively solved, and the display quality of a liquid crystal display device is improved.

The application provides a display panel and a touch display device. Since a conductive layer covered by a black matrix layer is provided in the display panel and the conductive layer is electricallyconnected to a common electrode or a ground line to derive charges of ions accumulated in the color filter substrate, the afterimage problem during the display of the display panel and the touch display device is avoided. In addition, the conductive layer located in the display panel can reduce the influence on the touch performance of the touch display device.

The invention discloses a pixel circuit, a driving method thereof, a display panel and a display device. The pixel circuit comprises a data writing module, a switch control module, a reset module, a light-emitting control module, a first light-emitting device, a second light-emitting device and a driving control module. The first light-emitting device and the second light-emitting device are arranged, a second electrode of the first light-emitting device is coupled to a first electrode of the second light-emitting device, and a first electrode of the first light-emitting device is coupled to asecond electrode of the second light-emitting device. Through cooperation of the data writing module, the switch control module, the reset module, the light-emitting control module and the driving control module, time-sharing display of the first light-emitting device and the second light-emitting device can be controlled, and long-time static display can be avoided, so that the residual image problem of the OLED display is avoided, the display life of the OLED display is prolonged, and the display performance of the OLED display is improved.

The invention discloses a display panel, a driving method thereof and a display device. The display panel comprises a plurality of columns of data lines, a plurality of rows of scanning lines, a plurality of pixel active switches, a pixel electrode, a plurality of reset circuits and a common electrode. The plurality of reset circuits and the plurality of pixel areas are arranged in a one-to-one correspondence manner, and the reset circuits are connected with the pixel electrodes; wherein the difference between the voltage value of the reset data signal and the voltage value of the common voltage signal is the offset value of the reset data signal; wherein the difference between the voltage value of the data signal and the voltage value of the common voltage signal is a data signal offset value; if the data signal offset value is an interval from zero to a positive value; the offset value of the reset data signal is any fixed value in a range from zero to a negative value; if the data signal offset value is an interval from zero to a negative value; the offset value of the reset data signal is any fixed value in a range from zero to a positive value. The problem that residual images are easily caused by positive and negative changes of voltage on a data line is solved.

The invention provides an alignment film and a preparation method thereof, a display panel and a display device, which belong to the technical field of display and aim to solve the problem that residual images which occur during display cannot be eliminated in an existing display panel. The alignment film comprises a functional material, wherein the functional material is formed in a way that polyimide reacts with captured monomers in an alcoholysis mode, and the functional material is used for generating functional free radicals which can capture ion impurities.

The invention discloses a liquid crystal display panel frame sealing adhesive curing auxiliary device and curing method which are used for solving the problem of residual images caused by contact of liquid crystal molecules and frame sealing adhesives in the ultraviolet curing process of a liquid crystal display panel, so that display quality of a liquid crystal display is improved. The liquid crystal display panel frame sealing adhesive curing auxiliary device comprises a first substrate, a first electrode and a second electrode, the first substrate comprises light-proof areas in matrix distribution and light-transmitting areas positioned among the adjacent light-proof areas, at least one of the first electrode and the second electrode is positioned on the first substrate, and an electric field is formed between the first electrode and the second electrode.

The invention discloses a compound, a liquid crystal composition and a liquid crystal display device. The structural formula of the compound is shown as a formula I. The liquid crystal composition comprises one or more compounds shown as the formula I, one or more compounds shown as the formula II and one or more compounds shown as the formula III. The liquid crystal display component comprises the liquid crystal composition. The liquid crystal composition provided by the invention has high diffusivity, shortens the first-stage light irradiation time from 75-100s to 50-65s, reduces residual images caused by uneven diffusion, has high conversion rate, and can realize quick response; the liquid crystal display component has the characteristics of wider nematic phase temperature range, properor higher birefringence anisotropy delta n, high RM conversion rate and less residue, can effectively avoid the residual image problem, can shorten the preparation process, and improves the production efficiency.

The invention discloses a CMOS image sensor structure and a manufacturing method. The CMOS image sensor structure comprises a pixel unit array arranged on an SOI substrate and a peripheral circuit located around the pixel unit array, wherein the SOI substrate sequentially comprises a silicon substrate for a device, a buried oxide layer and a silicon substrate, and the pixel unit array comprises asilicon epitaxial layer arranged in the silicon substrate for the device, the buried oxide layer and the silicon substrate, and photosensitive parts of a plurality of pixel units arranged in the silicon epitaxial layer. According to the invention, a high-performance SOI device is still used in the peripheral circuit of an image sensor, and the high-performance pixel unit structure is manufacturedat the same time.

The invention discloses an array substrate and a manufacturing method thereof, a display panel and a display device. The array substrate comprises a substrate base plate, a color resistance layer, anorganic insulating film layer, a pixel electrode layer and a liquid crystal guide film layer, wherein the color resistance layer, the organic insulating film layer, the pixel electrode layer and the liquid crystal guide film layer are sequentially arranged on the substrate base plate. An ion barrier layer is further arranged between the organic insulating film layer and the liquid crystal guide film layer so as to prevent ions from reaching the liquid crystal guide film layer. By means of the mode, a problem of residual images of the panel can be avoided, and display quality is improved.

The invention discloses a pixel circuit, a driving method thereof, a display panel and a display device. The pixel circuit uses a node reset module to reset the gate of a driving transistor in the first reset stage, and uses a data writing module to realize the reset in the data writing stage. The writing of data signals and the compensation for the threshold voltage drift of the driving transistor use the light-emitting control module to conduct the first voltage terminal and the light-emitting diode during the light-emitting phase, so as to realize the improvement of the driving transistor threshold caused by process and transistor aging through internal compensation Display unevenness caused by voltage drift. Moreover, since the light emission control module uses the first voltage terminal to reset the first pole of the driving transistor in the first reset stage, the reset module resets the gate of the driving transistor in the first reset stage, thereby ensuring that the gate-source voltage of the driving transistor is A constant value, not affected by the last signal / picture, so as to solve the afterimage problem.

The embodiment of the invention provides a driving circuit and a display device, the driving circuit comprises an integrated power supply management circuit and a source electrode driving circuit, the source electrode driving circuit comprises a positive frame amplifier and a negative frame amplifier, the input end of the positive frame amplifier is connected with the integrated power supply management circuit, and the output end of the positive frame amplifier is used for outputting a positive polarity driving signal during positive frame driving; the input end of the negative frame amplifier is connected with the integrated power management circuit, and the output end of the negative frame amplifier is used for outputting a negative polarity driving signal during negative frame driving; and at least one of the positive frame amplifier and the negative frame amplifier is an adjustable amplifier with an adjustable voltage conversion rate, and the source electrode driving circuit is configured to improve or reduce the voltage conversion rate of the adjustable amplifier according to the charging difference of the positive frame driving and the negative frame driving. According to the design, the charging difference of positive frame driving and negative frame driving can be balanced by adjusting the voltage conversion rate of the adjustable amplifier, and the charging rates of positive and negative frames can be balanced even under the condition that the charging time is relatively short, so that the problem of generation of residual images can be avoided.

The invention provides a display substrate, a manufacturing method of the display substrate, a display panel and a display device and belongs to the technical field of display. The manufacturing method of the display substrate comprises steps as follows: providing a substrate; forming a transparent conductive layer on the substrate; forming black matrix patterns on the transparent conductive layer. By means of the technical scheme, formation of a coupling electric field is avoided on the premise that the cost of the display substrate is not increased.

A diphenylamine compound is represented by the following formula (I). The ranges of each functional group and substituent in the formula (I) are as defined in the description and claims respectively. The polyamic acid composition or polyimide composition prepared by the diphenylamine compound of the present invention has the advantage of being able to effectively solve the problem of residual images of liquid crystal display elements when it is subsequently used as a liquid crystal alignment agent and forms a liquid crystal alignment film.

The invention discloses a method for controlling image display, comprising: judging whether a static image appears; when a static image appears, acquiring the actual gray scale of each pixel in the static image, and generating multiple outputs corresponding to the actual gray scale Gray scale; alternately replace the actual gray scale with the output gray scale to form a dynamic image output. The invention controls the image display by combining the space domain and the time domain, processes the static image into a dynamic image output, and solves the afterimage problem of the static image on the display screen.

The invention provides a method for improving display quality of a liquid crystal panel, which comprises that pixel data are input to enable a source to have a source voltage with an alternating current waveform so as to display images; a sharing voltage is adjusted to a first voltage value which enables the screen flickering degree to be minimum; the first voltage value is deviated from a first offset, so that the sharing voltage reaches a second voltage value; the second voltage value and the source voltage are continuously applied to the liquid crystal panel for a preset period of time; and the sharing voltage is adjusted to a third voltage value, a second offset which is not equal to the first offset but is in the same deviating direction as the first offset exists between the third voltage value and the first voltage value, and the third voltage value is used in coordination with the source voltage to display images. The method can solve the problems of poor display quality such as residual images, flickering and the like which occur during the image display process.

The present application discloses a display panel, a driving method thereof, and a display device; the display panel includes: multiple columns of data lines, multiple rows of scan lines, multiple pixel active switches, pixel electrodes, multiple reset circuits and common electrodes; multiple A reset circuit is provided in a one-to-one correspondence with a plurality of the pixel regions, and the reset circuit is connected to the pixel electrode; wherein, the difference between the voltage value of the reset data signal and the voltage value of the common voltage signal is the reset data signal offset value; the difference between the voltage value of the data signal and the voltage value of the common voltage signal is the offset value of the data signal; if the offset value of the data signal ranges from zero to a positive value; the reset data The signal offset value is any fixed value from zero to negative value interval; if the data signal offset value is zero to negative value interval; the reset data signal offset value is any fixed value from zero to positive value interval value; to solve the problem of residual image caused by the positive and negative changes of the voltage on the data line.

A liquid crystal display device comprises an array substrate, a color film substrate, and a liquid crystal layer between the array substrate and the color film substrate. The array substrate comprises a first transparent base, pixel electrodes, an insulating protective layer, first common electrodes and a first alignment layer; the pixel electrodes, the insulating protective layer, the first common electrodes and the first alignment layer are formed on the first transparent base; the pixel electrodes and the first common electrodes are electrically insulated by the insulating protective layer; the first common electrodes are arranged above the pixel electrodes; the first alignment layer is formed on the insulating protective layer and covers the first common electrodes. The color film substrate comprises a second transparent base, a shade array and second common electrodes; the shade array and the second common electrodes are formed on the second transparent base. The insulating protective layer is provided with through holes corresponding to the shade array; the through holes penetrate the insulating protective layer and allow the pixel electrodes to be exposed; the first alignment layer fills the through holes and contacts with the pixel electrodes.

A method for determining a driving voltage comprises: (S301) when a driving high voltage and a driving low voltage of a TFT-LCD are set, for each gray level, determining an average value of a driving high voltage and a driving low voltage of the gray level according to a TFT-LCD pixel electrode feed-through voltage of the gray level; and (S302) setting the driving high voltage and the driving low voltage of the TFT-LCD according to a relationship curve of the average value, a driving voltage of a source driving integrated circuit and a light transmittance of the TFT-LCD and a gamma curve of the TFT-LCD. Because an average value of a driving high voltage and a driving low voltage is determined according to a TFT-LCD pixel electrode feed-through voltage, a phenomenon is prevented that driving voltages are asymmetrical due to the fact that a pixel electrode feed-through voltage is different from a difference between the average value of the driving high voltage and the driving low voltage of the gray level and a reference voltage (Vcom) of a TFT-LCD, and the problem of an residual image due to deviation of the pixel electrode feed-through voltage of the TFT-LCD is avoided. Also provided is an apparatus for determining a driving voltage.

The invention discloses a liquid crystal display panel frame sealing adhesive curing auxiliary device and curing method which are used for solving the problem of residual images caused by contact of liquid crystal molecules and frame sealing adhesives in the ultraviolet curing process of a liquid crystal display panel, so that display quality of a liquid crystal display is improved. The liquid crystal display panel frame sealing adhesive curing auxiliary device comprises a first substrate, a first electrode and a second electrode, the first substrate comprises light-proof areas in matrix distribution and light-transmitting areas positioned among the adjacent light-proof areas, at least one of the first electrode and the second electrode is positioned on the first substrate, and an electric field is formed between the first electrode and the second electrode.

The invention relates to the technical field of liquid crystal displaying and discloses a display substrate, a manufacturing method of the display substrate and a liquid crystal display panel. An ion barrier structure is arranged in a non-display area of the display substrate and used for preventing charged ions in the non-display area from being diffused to a display area, accordingly the problem that residual images are produced on the periphery of the display area can be effectively solved, and the display quality of a liquid crystal display device is improved.

The invention discloses a pixel circuit, a driving method thereof, a display panel and a display device. The pixel circuit includes: a data writing module, a switch control module, a reset module, a light-emitting control module, a first light-emitting device, and a second light-emitting device , and a drive control module; by setting the first light-emitting device and the second light-emitting device, and the second electrode of the first light-emitting device is coupled to the first electrode of the second light-emitting device, the first electrode of the first light-emitting device and the second The second electrode of the light-emitting device is coupled, and through the cooperation of the data writing module, the switch control module, the reset module, the light-emitting control module and the driving control module, the time-sharing display of the first light-emitting device and the second light-emitting device can be controlled, which can avoid Static display for a long time, so as to avoid the afterimage problem of the OLED display, prolong the display life of the OLED display, and improve the display performance of the OLED display.

The invention relates to a CMOS image sensor comprising a transistor and a photodiode, wherein the transistor comprises a grid dielectric layer and a grid electrode which are arranged on the surface of an epitaxial film in sequence and side walls arranged at both sides of the grid dielectric layer and the grid electrode in sequence, a doping well arranged in the epitaxial film at one side of the grid electrode, heavy-doping regions arranged in doping wells arranged at one side of the grid electrode and one sides of the side walls, and a threshold voltage regulation region arranged in the epitaxial film below the grid electrode, wherein the doping well surrounds an adjacent isolating structure, and the threshold voltage regulation region is adjacent to the doping well. The photodiode comprises a heavy-doping region arranged in the epitaxial film and a light-doping region arranged in the epitaxial film, wherein the heavy-doping region is a distance away from the adjacent isolating structure, the depth of the heavy-doping region is larger than that of the threshold voltage regulation region, and the heavy-doping region and the threshold voltage regulation region are partially overlapped; the conduction type of the light-doping region is opposite to that of the heavy-doping region, the depth of the light-doping region is smaller than that of the heavy-doping region and the light-doping region is adjacent to the isolating structure and the threshold voltage regulation region. The invention reduces the residual image of the image sensor, is suitable for the manufacture process of submicron layer, and has smaller drain current and simple manufacture process.

The invention discloses a display panel and a driving method thereof, and a display device. The display panel comprises a plurality of columns of data lines, a plurality of rows of scanning lines, a plurality of pixel active switches, a pixel electrode, a plurality of reset active switches and a common electrode. The plurality of pixel active switches and a plurality of pixel areas are arranged in a one-to-one correspondence manner, the source electrodes of the reset active switches are connected with the pixel electrode, and the drain electrodes of the reset active switches are connected to a reset data signal. A plurality of reset control signal lines are arranged in one-to-one correspondence with the scanning lines and are connected to the gate electrodes of the reset active switches. If the offset value of the data signal is in an interval from zero to a positive value, the offset value of the reset data signal is in an interval from zero to a negative value; and if the offset value of the data signal is in an interval from zero to a negative value, the offset value of the reset data signal is an interval from zero to a positive value. The problem that the change of voltage on a data line between a positive value and a negative value easily cause residual images is solved.