186results about How to "Avoid afterimage" patented technology

The invention provides a liquid crystal display panel, a discharging method thereof and a display device. The liquid crystal display panel comprises a plurality of pixel structures arranged in a matrix mode, discharging ends, a plurality of scanning lines and data lines. Each pixel structure comprises a switch unit and a pixel unit connected with each other, and each switch unit is used for starting and stopping the corresponding pixel unit. The liquid crystal display panel further comprises a discharging circuit connected with the scanning lines, the data lines and the discharging ends and is used for enabling the scanning lines to conduct discharging scanning and starting the switch units, so that residual charges on the pixel units are discharged to the discharging ends through the data lines. According to the liquid crystal display panel, the discharging circuit is arranged, the residual charges on the pixel units are discharged more thoroughly, and appearance of residual images in the display process of the liquid crystal display panel or after display of the liquid crystal display panel is finished is further avoided.

The invention relates to a liquid crystal display panel and a drive method thereof. The liquid crystal display panel comprises a plurality of pixels in matrix distribution, a plurality of grid scanning lines providing scanning signals for each row of pixels, and a plurality of data wires providing data signals for each list of pixels; the grid scanning lines are connected with a grid driver, the data wires are connected with a data driver, and the grid driver and the data driver are driven by a time schedule controller; wherein, the liquid crystal display panel also comprises a list of virtual pixels and a voltage comparator; the voltage comparator comprises a first input end, a second input end and a feedback output end; the first input end and the second input end are connected with the virtual pixels, and the feedback output end is connected with the data driver. The liquid crystal display panel and the drive method provided by the invention can avoid flicker and photogene caused by feedthrough voltage by adjusting the data wire voltage output by each pixel.

The invention provides a display method and a display device. The display method is applied to the display device. The display device comprises a display screen. The display method comprises the stepsthat when it is detected that a current frame picture displayed on the display screen is in the static state,and the next frame picture is the same as the current frame picture,the next frame pictureis moved in the preset direction,and a moved picture is obtained; the display screen is controlled to display the moved picture. In this way,the problem that a residual image is caused when the display screen displays the same static picture for a long time can be effectively avoided,the display effect is improved,the service life of the display screen is prolonged,and no cost needs to be added.

The present invention relates to a display device capable of reducing power consumption and preventing flicker, as well as a driving method thereof. An exemplary display device includes: a display panel configured for display of a still image and a motion picture; a signal controller programmed to transmit control signals for driving the display panel; and a graphic processing unit transmitting input image data to the signal controller. The signal controller includes a frame memory storing the input image data, and the display panel is driven at a first frequency when the motion picture is displayed and alternatingly driven at the first frequency and a second frequency when the still image is displayed, the second frequency being lower than the first frequency.

A liquid crystal display includes; a first substrate, a gate line disposed on the first substrate, a first data line disposed substantially perpendicularly to the gate line on the first substrate, and which insulates and the gate line, a first thin film transistor connected to the gate line and the first data line, a first pixel electrode connected to the first thin film transistor, a liquid crystal capacitor including the first pixel electrode and a second pixel electrode as two terminals thereof, and a liquid crystal layer disposed between the first pixel electrode and the second pixel electrode, and a short transistor having a control terminal connected to a previous gate line, and which is controlled to short the first pixel electrode to a voltage approaching a voltage of the second pixel electrode.

A rollable display including a flexible display panel having a screen that is separated into an exposed display region and a non-exposed display region. The screen of the flexible display panel is moved using a screen driver, and a moving direction of the exposed display region is controlled to be opposite to a moving direction of the screen, to distribute the stress of pixels, without changing an absolute location of the exposed display region, and to defer degradation of the pixels.

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.

The embodiment of the invention discloses a gate drive circuit comprising a pull-up control module which is used for generating a first control signal in case of power outage; a pull-up output modulewhich is used for outputting high level under the control of the first control signal; a pull-down control module which is used for generating a second control signal in case of power outage; and a pull-down output module which is used for outputting low level under the control of the second control signal, wherein the output end of the pull-up output module and the output end of the pull-down output module are connected with the output end of the Nth gate drive unit, and the output end of the Nth gate drive unit is enabled to output high level by the pull-up output module and the pull-down output module in case of power outage. The image on the screen can be quickly cleared in case of sudden power outage in the use process of the liquid crystal screen so that appearance of the ghost shadow of the previous display frame on the displayer can be avoided.

A driving circuit of a liquid crystal display device capable of processing interlace type video signals, includes a data driver inverting a polarity of a pixel data at least every two-field period, converting the pixel data every field period according to a variable gamma voltage, and supplying the inverted pixel data to a liquid crystal display panel, a value of the gamma voltage changing every field period.

The embodiment of the invention discloses a display method for icons.The display method comprises the steps that whether a preset transformation condition for the icons in a target display area is met or not currently is judged; if yes, backup icons in a preset icon library are acquired; the icons in the target display area are replaced with the backup icons; the icons in the target display area comprise the status icons in a status bar or the virtual key icons in a virtual key bar, the styles of the backup icons are different from those of the status icons or the virtual key icons, and the styles comprise the shape, the size and / or the color.Correspondingly, the embodiment of the invention further discloses a display device for the icons and a terminal.By adopting the display method, the phenomenon that a ghost image occurs in a displayed picture can be prevented, and the display effect is improved.

The invention discloses an OLED display screen protection method, an intelligent TV and a storage medium; the method comprises the following steps: enabling the intelligent TV to detect the image brightness mean value in the current OLED display screen; using a preset algorithm to calculate the absolute value of the differences of the image brightness mean values detected in a period, and determining whether the image brightness mean value difference absolute value is smaller than a preset brightness threshold or not; if the absolute value is smaller than the preset brightness threshold and the current image is a static image, determining whether the static frequency of the current image exceeds a preset frequency or not; if yes, controlling a main chip to refresh frames of the current image. The method calculates the image brightness mean value difference absolute value in the preset period; when the current image is fully static, the main chip is controlled to refresh the frames of the playing frame, thus preventing the OLED display screen from having mura.

An embodiment of the invention discloses a display control method and a display control device of an intelligent terminal, and the intelligent terminal, wherein the display control method comprises the steps of detecting aging distribution information of a target area in the display screen of the intelligent terminal, wherein the target area is used for displaying fixing information in the display screen; and performing displaying adjustment on information which is displayed in one or a plurality of sub-areas in the target area according to aging degree that is indicated by the detected aging distribution information; wherein displaying adjustment on the displayed information comprises one or a plurality of processes selected from brightness adjustment, shape adjustment, size adjustment and position adjustment. The display control method, the display control device and the intelligent terminal are advantageous in that no relatively large difference exists among aging of a plurality of sub-areas to a certain extent, furthermore color difference of the display screen can be reduced to a certain extent; the sub-areas in the target area can display different contents in different time periods; and a problem of display screen ghost can be well settled.

The invention relates to a developing solution component. The developing solution component disclosed by the invention comprises the following components in parts by weight: 0.01-5.0 parts of inorganic acid or organic acid, 0.01-5.0 parts of a surfactant, 0.1-10.0 parts of an organic solvent dissolved in water, 85-99 parts of the water and 0-2 parts of an additive, wherein the total weight of the developing solution component is 100 parts. According to the developing solution component disclosed by the invention, the problem that an alkaline hyperdispersant is added in the particle micronization preparation of light resistance paint and is difficult to develop in an alkaline developing solution component can be solved, so that the requirements of good resolution and pattern refinement can be met.

The invention discloses a display device with a static image judging function and a judging method of the device. The display device comprises a receiving unit, a memory unit, a display unit and a processing unit, wherein the receiving unit is used for receiving a first image data including a first image and a second image in a first scheduled period and storing the first image data into a memory unit; the display unit is used for displaying the first image data as a first image; and a coupling memory unit and the processing unit of the display unit respectively divide the first image and the second image into corresponding N first subimages and second subimages, wherein N is a natural number, respectively record a plurality of first and second maximum colour gradation parameter values and a plurality of first and second minimum colour gradation parameter values direct to each first subimage and each second subimage, compare each corresponding first maximum colour gradation parameter value, each corresponding second maximum colour gradation parameter value, each corresponding first minimum colour gradation parameter value and each corresponding second minimum colour gradation parameter value and judge the first image to be static when two differences are less than an initial check scheduled difference level. With adoption of the display device and the judging method thereof which are disclosed by the invention, a persistent image of the display device can be avoided.

A degradation compensation device and an organic light emitting display device including the same are provided. The degradation compensation device includes a degradation rate acquisition unit acquiring estimated degradation rates, estimated with respect to a plurality of respective pixels, based on panel usage information, a digital compensation unit performing digital compensation to lower a digital gradation of each pixel, based on a luminance of a pixel having a maximum degradation rate, among the estimated degradation rates, and an analog compensation unit performing analog compensation to increase luminance of the plurality of pixels by changing an analog voltage supplied to a panel, after performing the digital compensation.

The embodiment of the invention discloses a display control method and device of an intelligent terminal. The method comprises the following steps: detecting the current terminal state of the intelligent terminal, and obtaining displayed display contents; judging whether the detected terminal state and the displayed contents meet a preset position regulation condition or not; if a judgment result shows that the detected terminal state and the displayed contents meet the preset position regulation condition, obtaining the position information of the displayed contents; and according to a preset movement rule and the obtained position information of the displayed contents, carrying out regulation processing on the displayed contents. The display control method and device can carry out position regulation on the display contents of a specific type when the intelligent terminal is under a certain state in a targeted way, and can effectively avoid a ghost problem in display screens of types including OLED (Organic Light Emitting Diode) and the like.

A method of driving a display panel, the method including generating a data signal including a black voltage signal and a white voltage signal, measuring brightness levels of pixels, converting differences between the measured brightness levels into direct current (DC) voltages, resetting the black voltage signal to reduce a difference between the DC voltages, generating a data voltage based on the data signal to output the data voltage to the display panel, and displaying an image on the display panel based on the data voltage.

An optical plate comprises a transparent body which comprises a first surface and a second surface opposite to the first surface; wherein, the first surface is provided with a plurality of long strip arc grooves; the second surface is provided with a plurality of triangular pyramid shaped grooves and rectangular pyramid shaped grooves; each rectangular pyramid shaped groove is enclosed by four triangular pyramid shaped grooves. The invention also provides a backlight module adopting the optical plate. The backlight module has the advantages of improving effective utilization ratio of light and enjoying uniformity of light emission.

The invention provides a liquid crystal display screen discharging method, a liquid crystal display screen and a driving chip thereof. The method comprises steps that the liquid crystal display screen driving chip generates a work voltage when the liquid crystal display screen works, and the work voltage is a voltage for starting work of a grid line circuit of the liquid crystal display screen; when the work voltage is detected by the liquid crystal display screen driving chip to be lower than a preset voltage value, a control signal is outputted by the liquid crystal display screen driving chip to open a switch of the grid line circuit of the liquid crystal display screen so as to make the liquid crystal display screen discharge. According to the method, when the work voltage is detected by the liquid crystal display screen driving chip to be lower than the preset voltage value, the control signal is outputted by the liquid crystal display screen driving chip to open the switch of the grid line circuit of the liquid crystal display screen so as to make the liquid crystal display screen discharge, so problems of screen flashing and blurring caused by liquid crystal polarization because of short-term re-power after abnormal power off of the liquid crystal display screen can be effectively avoided.

Provided are: a liquid crystal display device capable of rapidly discharging an image signal which is held in a pixel formation portion, when a power supply thereof is turned off; and a driving method of the liquid crystal display device. If the liquid crystal display device shifts to an off-sequence mode, then a data signal Vd with a potential Vdoff1 corresponding to a shift amount ΔV3 lowered by a coupling effect of a parasitic capacitance formed between a gate terminal and drain terminal of a thin film transistor (12) is applied to a signal line SL. When a scanning signal Vg turns to a high level, the data signal Vd applied to the signal line SL is written into the pixel formation portion (11), and a potential of a pixel signal Vpix becomes the Vdoff1. When the scanning signal Vg falls to a ground potential GND after an elapse of a period t1, the potential of the pixel signal Vpix is lowered by a shift amount ΔV3, and accordingly, the potential of the pixel signal Vpix becomes the ground potential GND. In this way, a direct current voltage applied to the liquid crystal layer also becomes 0V.

An imaging apparatus includes a detector having a plurality of conversion elements for converting radiation or light into an electric charge, a power supply unit that supplies a first voltage to the conversion element in a first imaging operation, and a control unit that controls the detector and the power supply unit. During a period between the first imaging operation and a second imaging operation, the control unit controls to perform a first inter-imaging operation in which a second voltage different from the first voltage is supplied to the conversion element, and, subsequently to the first inter-imaging operation, a second inter-imaging operation in which a third voltage different from the first and the second voltages is supplied to the conversion element. The absolute value of the difference between the third and the first voltages is smaller than the absolute value of the difference between the second and the first voltages.

In a display substrate and a vertical alignment display panel having the same, the display panel includes an array substrate and an opposite substrate. A plurality of first slit portions are arranged through a pixel area of a common electrode on the array substrate, and the first slit portions extend in a slanted direction. A plurality of grooves and a plurality of protruding portions are alternately arranged at edges facing each other on the first slit portion, so that the first slit portions are patterned. A positive singular point is generated on a side surface of a protruding portion, and a negative singular point is generated between the positive singular points.

The invention relates to a direct backlight module which comprises a frame, a plurality of light-emitting diodes arranged at the bottom of the frame, as well as a first optical plate and a second optical plate that are sequentially arranged above the light-emitting diodes at intervals, wherein the first optical plate and the second optical plate respectively comprise a light entry surface and a light exit surface which is opposite to the light entry surface, as well as a plurality of long-strip V-shaped ridge structures which are formed at the light exit surface, extend along at least two different directions and are mutually staggered. The direct backlight module has better exit ray uniformity and is suitable for thinned design.

The invention provides a method and an apparatus for temperature compensation, and a display device. The method and the apparatus are used for performing temperature compensation on a data line signalin the display device, wherein the method for temperature compensation comprises the steps of determining the temperature value of the driving transistor according to the photoelectric display signalof the display device and / or the anode voltage signal of the light emitting device, calculating the electric parameter offset of the driving transistor according to the temperature value, and carrying-out real-time temperature compensation on the data line signal such as the gate voltage. The influence of the temperature rise on the electric parameter in the display process is considered in the temperature compensation process, and the residual image and the Mura under the low gray scale can be avoided compared with the prior art, thereby improving the display picture quality.

An adaptive method and apparatus prevents the formation of residual images in a liquid crystal display caused by a discharge of liquid crystal cells upon power-off. When an off-time of a ramp voltage is sensed, a white data signal may be generated. The white data signal is then displayed on a liquid crystal display panel until a power supply for the liquid crystal module is turned off.

The invention describes a preparation process of pressure sensitive adhesives,wherein a multi-stage emulsifier-free emulsion polymerization and applications of the obtained dispersions for pressure sensitive protective films are included. At least one carboxylic acid group containing monomer is used in the first stage of emulsion polymerization. The theoretical glass transition temperatures are lower than 0 DEG C (for the first stage polymer), -20 DEG C (for the second stage polymer) and -15 DEG C (for the overall dispersion), respectively. The dispersion is preferably cross-linked with polyfunctional crosslinking agents, such as aziridine, isocyanate, carbodiimide and oxazoline. The adhesives obtained from the process thereof can be used for the application of protective films to reduce or eliminate ghost shadow on the protected surfaces.

In the provided liquid crystal display apparatus, a first switching element receives a first data signal and a second switching element receives a second data signal having a polarity opposite that of the first data signal. A first pixel electrode is electrically connected to the first switching element to receive the first data signal and a second pixel electrode is electrically connected to the second switching element to receive the second data signal. The second pixel electrode faces the first pixel electrode and is electrically insulated from the first pixel electrode. A liquid crystal layer has liquid crystal molecules aligned in response to the first and second data signals applied to the first and second pixel electrodes, respectively. Thus, the liquid crystal display apparatus may prevent afterimages on a screen thereof and a flickering phenomenon.

An embodiment of the invention discloses a compensation method and a compensation device of a display panel, and a display device. The compensation method of the display panel comprises the steps of:acquiring accumulated display time of each sub-pixel unit of the display panel and a display gray scale corresponding to each display time period in the accumulated display time; calculating a normalized display gray scale of each sub-pixel unit according to the display gray scale of each display time period and the accumulated display time; determining a current brightness deviation of each sub-pixel unit according to the normalized display gray scale, the accumulated display time and a pre-stored corresponding relationship among the gray scales, the brightness and the time; and compensatinga display driving signal of each sub-pixel unit according to the current brightness deviation. According to the compensation method of the display panel of the embodiment of the invention, the residual image problem of the display panel is improved.