180results about How to "Avoid afterimage" patented technology

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.

An embodiment of the invention discloses a display control method and device of a terminal and an intelligent terminal. The display control method includes detecting display information displayed by the terminal; judging whether the current display state is static or not according to the detected display information, wherein the display static state means display is kept unchanged within the preset time; moving the current display image according to the preset image movement rule if in the display static state, and displaying the moved image. With the display control method and device, ghost of a display screen due to the long-term display static state can be effectively solved.

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 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 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.

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.

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.

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.

The invention relates to a diffusion plate made of a transparent body doped with diffusion particles; wherein, the transparent body comprises a first surface and a second surface opposite to the first surface; the first surface is provided with a plurality of long strip arc bulges; the second surface is provided with a plurality of long strip arc grooves; the extension direction of the long strip arc bulges on the first surface intersects with the extension direction of the long strip arc grooves on the second surface. The diffusion plate can improve effective utilization ratio of light and enjoy high uniformity of light emission. The invention also relates to a backlight module adopting the diffusion plate.