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OLED (Organic Light-Emitting Device) image burning improvement method and device

An image and image block technology, applied in the field of OLED display, can solve problems such as high cost, complicated process, and poor quality

Active Publication Date: 2018-01-19
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above method delays the brightness decay of OLED to a certain extent and improves the burning phenomenon, but the process is complicated and the cost is high, so it cannot be widely used in products
For image burning phenomenon, there is no good solution at present. Usually, major sales manufacturers list image burning caused by users outside the scope of warranty.

Method used

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  • OLED (Organic Light-Emitting Device) image burning improvement method and device
  • OLED (Organic Light-Emitting Device) image burning improvement method and device
  • OLED (Organic Light-Emitting Device) image burning improvement method and device

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Embodiment 1

[0065] refer to Figure 5 , Figure 5 It is a schematic diagram of simulation results using the OLED image burn-in improvement method disclosed in the present invention. According to the existing OLED brightness attenuation model, the image burning simulation is carried out on the checkerboard screen, and the initial brightness is 5000cd / m 2 , the test time is 8000h. According to the image features and judged by image detection, the horizontal direction and vertical direction of the checkerboard image have the same burning situation, and the moving mode selects the moving mode of moving right → moving down → moving left → moving up. The results of the burning phenomenon before and after image processing are as follows Figure 5 As shown, it can be seen that after the image movement processing, the edge of the image is blurred, and the image burning phenomenon has been improved to a certain extent compared with that before the processing.

[0066] refer to Image 6 , Imag...

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Abstract

The invention discloses an OLED (Organic Light-Emitting Device) image burning improvement method, and belongs to the technical field of OLED display. A video signal is detected and processed in real time, and images are divided into a static image, a hybrid image and a moving image according to an image moving state. Different processing methods are adopted by aiming at different moving state images to improve image burning. The method has the core concept that the static image integrally moves, the luminance of the hybrid image is lowered according to areas, and the luminance of a high-luminance pixel is lowered by the moving image. The invention also discloses a device for realizing the OLED (Organic Light-Emitting Device) image burning improvement method. The device comprises an image movement detection module, a static image processing module, a hybrid image processing module, a moving image processing module and an output selection module.

Description

technical field [0001] The invention belongs to the field of OLED display technology, and in particular relates to a method and device for improving OLED image burning. Background technique [0002] Organic electroluminescent devices (OLEDs) have outstanding features such as high contrast, fast response, wide viewing angle, bright colors, and low power consumption. However, after decades of development, OLED display devices are still in the development stage and cannot compete with liquid crystal display devices. Short life and serious image burning are two important reasons that restrict the development of OLED industrialization. [0003] OLED image burn-in phenomenon (screen burn-in) means that after displaying a still image for a long time, when switching to another screen, you can still see part of the afterimage of the original image. This is because the brightness of each pixel is attenuated due to different image content displayed by OLED. caused by the difference. ...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 张小宁孙春来王恒杰屠震涛张军樊瑞
Owner XI AN JIAOTONG UNIV
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