Method for eradicating liquid crystal display dynamic trailing smear

Abstract

The invention discloses a method for eliminating dynamic streaking of liquid crystal display. The concrete steps include: (a). convert images of two following frames into black and white brightness signal images; (b). compare the pixels at the corresponding position in the black and white brightness signal images and retain the pixel with a smaller grayness value; (c). form a frame of black frame insertion images (Gn) with the group of pixels obtained after the comparison of each pair of pixels; (d). insert the black frame insertion images (Gn) into images of two following frames. The method of the invention is to compare continuous image signals of two frames, and form a frame of 'new grayness distribution signal' with the darker pixels of each pixel position as the black frame insertion image to reach the purpose of lowering MPRT and eliminating streaking of dynamic images. The invention can not only overcome the shortcoming of the low efficiency of the black frame insertion technique, but also overcome the inadequate elimination of dynamic blurs and the high decline of the contrast in gray frame insertion technique. In addition, the method of obtaining insertion frames is simple and accessible, thus greatly saving the production cost.

Description

technical field [0001] The invention relates to a liquid crystal display method, in particular to a method for improving the dynamic image quality of the liquid crystal display. Background technique [0002] With the advent of the era of Full Definition (Full Definition) high-definition television, the industrial status of LCD TV (Liquid Crystal Television) has risen greatly. This is because CRT (Cathode Ray Tube, cold cathode ray tube) scans with an electron gun, and it is not easy to achieve the high precision required by FDTV, while LCD uses semiconductor manufacturing process, which can achieve extremely high precision. However, LCD TV also has many defects that need to be improved, and dynamic picture smear (blur) is one of the main defects that LCD TV needs to improve. [0003] The smear defect of LCD TV is mainly caused by two reasons (1) the response speed of liquid crystal is not fast enough; (2) the "hold type" working mode of LCD. Regarding the "hold type" worki...

AI Technical Summary

Problems solved by technology

[0007] However, the black insertion technology itself also has two shortcomings: (1) The black insertion technology reduces the contrast. It can be seen from Figure 3 [picture source, Samsung Electronics, SID 04 Digest] that when the black screen insertion ratio is 50%, the contrast is reduced by more than half ;(2) The energy efficiency becomes lower, and the black screen insertion ratio is 50%, and the energy utilization efficiency is reduced by half, which means that to maintain the same brightness, the brightness of the backlight source must be doubled

Aiming at the second deficiency of the black insertion technology, people propose the gray insertion technology, but although the gray insertion technology overcomes the disadvantage of low energy utilization efficiency of the black insertion technology, it also brings more problems at the same time. The motion blur elimination is not as good as the black insertion technology. , the loss of contrast reduction is greater than that of black insertion technology

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