Panel display local and whole-screen brightness uniformity correction method

A flat-panel display and correction method technology, which is applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems that image brightness cannot be guaranteed to be consistent, and the brightness of the whole screen is uneven, so as to achieve brightness consistency correction and the method is convenient Effect

Active Publication Date: 2008-03-19
CHANGCHUN CEDAR ELECTRONICS TECH CO LTD
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Problems solved by technology

[0004] For flat-panel displays that have achieved brightness consistency correction, if there are dots on the display or module damage, the brightness parameters of each pixel replaced during maintenance are different from those before the damage, so the original brightness correction parameters and video signal source data are used for calculation processing The brightness of the obtained image cannot be guaranteed to be consistent with other parts of the display, and the brightness of the entire screen is uneven

Method used

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  • Panel display local and whole-screen brightness uniformity correction method
  • Panel display local and whole-screen brightness uniformity correction method
  • Panel display local and whole-screen brightness uniformity correction method

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Embodiment 1

[0037] In the present invention, when a single point is damaged on a flat-panel display that has achieved consistent brightness, the steps of the method for correcting the brightness of the point and the consistency of the full screen are as follows:

[0038] If the damaged pixels are replaced with new ones, the display screen has no bright spots or dark spots through the observation of human eyes, and the method of recalibration can be omitted. If there is a single point that is too bright or too dark, you need to call out the brightness correction coefficient of the display screen from the database, and find the 24bits original brightness correction coefficient corresponding to the damaged point in the brightness correction coefficient table (including 8bits red (R), 8bits red (R), 8bits green (G), 8bits blue (B) luminance correction coefficients), take the reciprocal of the 8bits red (R), 8bits green (G), 8bits blue (B) original luminance correction coefficients K1 correspon...

Embodiment 2

[0044] In the present invention, when the template is damaged on a flat-panel display that has achieved uniform brightness, the steps of the method for correcting the brightness of the template and the consistency of the full screen are as follows:

[0045] Firstly, the brightness correction is performed on each pixel on the newly replaced template to make the display brightness of the whole template consistent, and the brightness pre-correction coefficient K of each pixel is obtained 2 . Then pre-correct the luminance coefficient K 2 Gamma corrections are performed separately.

[0046] Call out the brightness correction coefficient of the display screen from the database, and find the 24bits original brightness correction coefficient corresponding to each pixel of the damaged template in the brightness correction coefficient table (including 8bits red (R), 8bits green (G), 8bits blue (B ) brightness correction coefficient); the original brightness correction coefficient K o...

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Abstract

The present invention relates to a uniformity correction method for the brightness of the part and the full screen of a panel display. The method comprises extracting the original brightness correction coefficient of each pixel of a broken part on the display screen from a correction database and carrying out gamma correction with the reciprocal of the coefficient. The result is multiplied by correcting white-field data displayed on the computer to shield the influence of the original brightness correction coefficient of each pixel. Then the newly replaced video brightness data of each pixel is adjusted to uniform the display brightness thereof and the brightness of other parts of the display screen and the final brightness correction coefficient of each newly replaced pixel is gotten by calculation, thereby brightness correction can be performed on each newly replaced pixel with the final brightness correction coefficient to uniform the brightness of the whole panel display. With convenient use and fast performance, the present invention can easily uniform the brightness of the whole panel display with spot or module pixel damage.

Description

technical field [0001] The invention relates to a method for correcting the brightness of a flat panel display, in particular to a method for correcting the brightness consistency between a part and a full screen of a flat panel display. technical background [0002] In recent years, with the development of flat-panel display technology and image display technology, display devices tend to be large-area, digital, and high-definition, so the requirements for uniformity and other indicators of flat-panel displays are getting higher and higher. Existing display devices are especially large-area flat-panel displays composed of discrete light-emitting pixel units (groups). Due to the discreteness of the discrete light-emitting pixel units (groups), and the huge number of light-emitting pixel units (groups), each of the same flat-panel display The light-color parameters of the light-emitting pixel unit (group) have a large dispersion; it causes uneven brightness and chromaticity o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/10G09G3/20G09G3/32G09G3/14H04N5/57
Inventor 丁铁夫郝亚茹王瑞光郑喜凤
Owner CHANGCHUN CEDAR ELECTRONICS TECH CO LTD
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