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Method detecting color cast condition of display device

A display device and color shift technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as increased light leakage from adjacent pixels, large viewing angle shift, and yellow color.

Active Publication Date: 2016-03-16
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, when watching a red picture, there will be, for example, light in directions 8 and 9 from the red pixel 5 to the green pixel 6 in the direction of a large viewing angle, resulting in a yellowish color when watching a red picture
Factors such as the narrow black matrix (BM) 10 lead to increased light leakage from adjacent pixels at large viewing angles, resulting in serious distortion of the large viewing angle

Method used

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  • Method detecting color cast condition of display device
  • Method detecting color cast condition of display device
  • Method detecting color cast condition of display device

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with accompanying drawing.

[0027] figure 2 The ideal case of no color shift at large viewing angles is shown. exist figure 2 In the example, the red picture is viewed from the right perspective. exist figure 2 In the ideal situation shown, what the observer observes is a pure red picture.

[0028] image 3 Shows localized color shift at large viewing angles. exist image 3 In the example, the red picture is viewed from the right perspective. In practice, it sometimes happens image 3 The partial color shift shown is mostly the color shift caused by light leakage. In this situation, the display screen of a certain part has obvious color difference (the part with color difference is exemplarily marked by hatching in the figure). For inspectors, it is relatively easy for human eyes to observe this kind of partial color shift, because it manifests as an obvious abnormality in the display scr...

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Abstract

The invention provides a method detecting a color cast condition of a display device. The method comprises steps of selecting a to-be-measured color from three pixel colors of red, green and blue, enabling a displaying picture of a to-be-detected display to only display the to-be-detected color, arranging a light filter between the to-be-detected display and eyes of an observer to enable light from the displaying picture to enter the eyes of the observer via the light filter, and observing the displaying picture via the light filter at a to-be-detected prospective. The light filter can only penetrate one non-to-be-detected color among the red, green and blue pixel colors. By the use of the method, color identification can be replaced via brightness determination, so whether a panel has large-view color cost can be determined.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a method for detecting the color shift of a display device. Background technique [0002] The current liquid crystal display device, no matter it is a mobile terminal application, a desktop monitor or a notebook computer, is gradually developing towards a wide viewing angle. However, in addition to the demand for wide viewing angles, it is also necessary to improve the problem of large viewing angles. This is because with the advancement of display technology, people pay more and more attention to the quality of the display screen. In particular, the resolution (ppi) of mobile phone screen displays is getting bigger and bigger, from 200ppi before to more than 300ppi now. As the resolution (ppi) becomes larger and the pixel size becomes smaller and smaller, it is necessary to ensure that the pixel has a certain penetration rate from the perspective of power consumption and brig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13
CPCG02F1/1309
Inventor 崔宏青唐岳军
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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