Method and device for eliminating display screen ghosting and display device

Abstract

The invention discloses a method and device for eliminating display screen ghosting and a display device. The method comprises the steps that whether a current display interface meets a preset replacement condition or not is judged; if the current display interface meets the preset replacement condition, the current display interface is replaced with a replacement interface in a preset database to reduce the brightness value of part of pixels of the display interface, wherein the preset database comprises a display interface and a replacement interface corresponding to the display interface, and the similarity between the replacement interface and the display interface is within a preset similarity range. By means of the mode, display screen ghosting can be effectively avoided, and the service life of the display equipment is prolonged.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a method, device and display device for eliminating residual images on a display screen. Background technique [0002] With the advancement of technology, smart phone screens are constantly developing towards brighter colors, higher frame rates, thinner, flexible screens, more power saving, and higher environmental adaptability; compared with traditional liquid crystal displays (LCDs) , Liquid CrystalDisplay), self-luminous displays, such as organic light-emitting diodes (OLED, Organic Light-Emitting Diode), have multiple advantages: a very wide color gamut, and some colors that cannot be accurately reproduced on LCDs can be expressed on OLEDs; It has an extremely fast response speed, and the response time is only one percent of that of LCD; it is extremely thin and light, and can integrate a touch layer in the display screen, making it more advantageous to make an ult...

AI Technical Summary

Problems solved by technology

Therefore, OLED has almost become the standard configuration of mainstream mobile phones or TVs, and it is also the trend of future display technology development. In the future, more smart devices may use self-illuminating screens; but OLED has its inherent disadvantages: easy to burn Screen (pixel afterimage) and short service life

[0003] The inventors of this application have discovered in the long-term research and development that in the prior art, in order to solve the problem of afterimages of pixels on self-luminous screens, the method of processing at the end of the display system is adopted , that is, to process the image data to be displayed after processing by the display system; to periodically detect the displayed image frame to determine whether the displayed image frame is a still image, and then use the residual visual characteristics of the human eye to temporarily change the image to be displayed , but periodically detect the image to be displayed on the display screen, it is necessary to periodically execute the image processing algorithm, and to process the image to be displayed, the real-time requirements are high, and the central processing unit (CPU, Central Processing Unit) The requirements are high; it is also possible to judge whether it is a still image by whether the image outline, the average brightness value, and the contrast difference change. Commonly used image processing methods include displacement of the entire image, reduction of the brightness of all pixels in the entire image or insertion of a complete black frame, displacement of part of the image or reduction of brightness of all pixels in a part of the region or insertion of black pixels, but overall or local pixel displacement And reducing the brightness will make the display effect significantly worse in some special display situations

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