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A method of obtaining pixel brightness compensation target

A technology of brightness compensation and pixel brightness, which is applied in the direction of cathode ray tube indicators, instruments, static indicators, etc., can solve the problem that the uneven brightness cannot be completely eliminated, so as to maintain gray level, good brightness uniformity, and reduce gray The effect of degree-level loss

Inactive Publication Date: 2018-06-26
XI AN JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

[0003] Improving the manufacturing process and driving method can improve the brightness uniformity of flat panel displays from the source, but cannot completely eliminate the uneven brightness

Method used

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  • A method of obtaining pixel brightness compensation target
  • A method of obtaining pixel brightness compensation target
  • A method of obtaining pixel brightness compensation target

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Embodiment Construction

[0021] Taking a flat-panel display with 256 gray levels and a resolution of 480 rows and 640 columns as an example, using a rectangular interpolation area and using a bilinear interpolation method to obtain a brightness compensation target of 128 gray levels as an example, the present invention will be further described.

[0022] figure 1 Shown is a flow chart of a method for obtaining pixel brightness compensation targets provided by the present invention, on a flat panel display with 256 gray scales and a resolution of 480 rows and 640 columns, a rectangular interpolation area is used, and a bilinear interpolation method is used The specific execution process for obtaining the 128-grayscale brightness compensation target is as follows:

[0023] Step 101, make the flat panel display evenly display 128 gray levels, measure the brightness of each pixel in the full screen at this time, and record it as the original brightness Ly(i,j).

[0024] Step 102, set Lm(i,j) as the brigh...

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Abstract

The invention discloses a method for obtaining a pixel brightness compensation goal. The method includes the steps of measuring the brightness of each pixel of a flat-panel display (FPD) under a to-be-compensate gray level, calculating the interpolation brightness of each pixel in an interpolation area by using an interpolation algorithm, comparing the interpolation brightness of each pixel under different interpolation areas, and finally obtaining the brightness compensation goal for each pixel. The method of interpolation first and then comparison is employed to calculate the brightness compensation goal for each pixel, so that the partial brightness fluctuation of original brightness is eliminated, and the integral brightness changing trend is maintained. Better brightness uniformity can be obtained when the image data compensation is carried out based on the goal, minimal change is made to the original brightness, grey level loss of pixels is reduced, and the gray scale hierarchy of an image is maintained.

Description

technical field [0001] The invention belongs to the technical field of flat panel display, and in particular relates to a method for obtaining a pixel brightness compensation target when image data compensation is used to improve the brightness uniformity of a flat panel display. Background technique [0002] Display technology is the main means of information dissemination. Flat panel display technology has become the current mainstream display technology, and brightness uniformity is an important indicator to measure display quality. At present, whether it is a liquid crystal display (LCD), a plasma display (PDP) or an organic light-emitting display (OLED), there are different degrees of brightness uniformity problems, that is, the brightness of the screen cannot be completely consistent when displaying the same gray level. The pixels in the area are too bright or too dark. Improving the brightness uniformity of flat panel displays can effectively enhance the market compe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/10
CPCG09G5/10G09G2320/0626
Inventor 屠震涛接丹枫张小宁梁志虎
Owner XI AN JIAOTONG UNIV
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