Ghost shadow elimination method and device and displayer

A technology to eliminate afterimages and images, applied to static indicators, instruments, etc., can solve problems such as standby, and achieve the effect of afterimages

Active Publication Date: 2015-11-25
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a method, device and display for eliminating image sticking, so as to ...

Method used

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  • Ghost shadow elimination method and device and displayer
  • Ghost shadow elimination method and device and displayer
  • Ghost shadow elimination method and device and displayer

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Experimental program
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Embodiment 1

[0026] This embodiment provides a method for eliminating image sticking, which is used for eliminating image sticking in a display, especially for eliminating image sticking in an OLED display. Such as figure 1 Shown is a schematic flow chart of the method for eliminating image sticking according to this embodiment. The method for eliminating image sticking of the present embodiment includes:

[0027] Step 101 , in the process of displaying an image frame, every interval of P frames occupies one frame time to detect the sub-pixels, and obtain aging information of the sub-pixels.

[0028] Wherein, P is a positive integer greater than 1, preferably, P is an integer greater than or equal to 3.

[0029] The image frames in this embodiment include dynamic frames and static frames. Since only one frame is used for detection in this embodiment, the user will hardly notice the discontinuity of the frames affecting the picture, and will not notice the pause of the video picture, esp...

Embodiment 2

[0044] Since some frames of the image frame are occupied, that is, the number of frames contained in the image frame is reduced compared with the original frames, which will cause the overall brightness of the image frame to decrease. Therefore, on the basis of the foregoing embodiments, this embodiment provides a further supplementary description of the method for eliminating image sticking in the foregoing embodiments. In this embodiment, the operation of increasing the gray scale value of each sub-pixel in the image frame may be performed to avoid reduction of the overall brightness of the image frame.

[0045] Specifically, increasing the grayscale value of each sub-pixel under the image frame includes:

[0046] Obtain the grayscale value of each sub-pixel in the display screen under the image screen;

[0047] Determine the grayscale threshold of each pixel according to the following formula:

[0048] ( ...

Embodiment 3

[0057] The following specifically illustrates the method for eliminating image sticking in the above embodiment.

[0058] First, the device for eliminating image sticking first judges whether the current display screen is a video screen, for example, compares whether the grayscale value of each pixel corresponding to the current frame is the same as that of the previous frame, and if the comparison result is the same, then determines that the current display screen is a video screen picture.

[0059] Next, an operation of detecting the sub-pixels and obtaining the aging information of the sub-pixels is performed by occupying one frame time at intervals of P frames. Specifically, this step may include: acquiring a detection frame every interval of P frames, the driving voltage of the detected sub-pixel under the detection frame is equal to the driving voltage of the sub-pixel under the image frame, using the detection frame to replace the frame corresponding to the image frame,...

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Abstract

The invention provides a ghost shadow elimination method and device and a displayer. The method comprises the following steps: in the image display process, carrying out detection on sub-pixels at an interval of P frames and in 1 frame time to obtain aging information of the sub-pixels, wherein the P is a positive integer larger than 1; obtaining compensation information of the sub-pixels according to the aging information; and carrying out compensation on the sub-pixels according to the compensation information so as to reduce gray scale attenuation of the sub-pixels. According to the ghost shadow elimination method and device and the displayer, in the image display process, it takes 1 frame time to detect the sub-pixels until the aging information of all the sub-pixels is obtained; and when the frame corresponding to the image displays, the ghost shadow elimination device can obtain compensation information through operation and carry out compensation operation, such that the problem of influencing client experience caused by the fact that the ghost shadow can be eliminated under a standby state of a user can be prevented, and ghost shadow elimination can be realized.

Description

technical field [0001] The invention relates to liquid crystal display technology, in particular to a method, device and display for eliminating residual images. Background technique [0002] At present, OLED (Organic Light-Emitting Diode, organic light-emitting diode) is widely used in portable products and military due to its advantages such as self-luminous display, fast response speed, wide viewing angle, and can be rolled, folded, or used as a part of wearable computers. There are very wide applications in special fields. OLED display technology is different from traditional LCD display methods. It does not require a backlight, but uses very thin organic material coatings and glass substrates. When an electric current passes through, these organic materials will emit light. [0003] In an OLED display, for sub-pixels of the same type, there may be brightness differences among the sub-pixels. Higher sub-pixels require a larger drive current, so the heating temperature ...

Claims

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Application Information

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IPC IPC(8): G09G3/32
CPCG09G3/3291G09G3/3208
Inventor 路林曹建伟
Owner HISENSE VISUAL TECH CO LTD
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