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Brightness compensation method and device for organic light-emitting display panel

A technology of luminous display and brightness compensation, applied in static indicators, instruments, etc., can solve the problems of low grayscale overcompensation, black screen light leakage and other problems

Active Publication Date: 2019-09-24
WUHAN TIANMA MICRO ELECTRONICS CO LTD
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Problems solved by technology

[0004] In view of this, the present invention provides a method and device for brightness compensation of organic light-emitting display panels, which are used to solve the problems of black screen light leakage and low gray scale overcompensation in the prior art when performing brightness compensation on organic light-emitting display panels

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  • Brightness compensation method and device for organic light-emitting display panel
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  • Brightness compensation method and device for organic light-emitting display panel

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Embodiment Construction

[0023] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0024] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0025] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.

[0026] In all examples shown and discussed herein, any specific values ​​should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...

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Abstract

The invention discloses a brightness compensation method and device for an organic light-emitting display panel. The brightness compensation method comprises the steps of obtaining an initial compensation coefficient; setting a product factor, wherein the product factor and the gray scale of the target pixel meet a piecewise function relation, when the gray scale of the target pixel is the lowest gray scale and the highest gray scale, when the gray scale of the target pixel is the first gray scale or the fourth gray scale, the product factor is 0, when the gray scale of the target pixel is in a sampling gray scale, and when the gray scale is in a second gray scale or a third gray scale, the product factor is 1, when the gray scale of the target pixel is in the first gray scale stage, the product factor and the gray scale are in a first linear relation, and when the gray scale of the target pixel is in the second gray scale stage, the product factor and the gray scale are in a second linear relation; and obtaining an actual compensation coefficient, wherein the actual compensation coefficient is used for compensating the brightness of the target pixel. According to the present invention, the problems of black picture light leakage and low-gray-scale excessive compensation when the brightness compensation is carried out on the organic light-emitting display panel, in the prior art, are solved.

Description

technical field [0001] The present invention relates to the field of display technology, and more particularly, to a brightness compensation method and device for an organic light emitting display panel. Background technique [0002] Organic light-emitting display panels use organic light-emitting diodes to achieve display. There are differences in the characteristics of each organic light-emitting diode. Under the same driving voltage, the output current of organic light-emitting diodes with different characteristics will be different. The difference will lead to uneven brightness and darkness on the organic light-emitting display panel. It is necessary to compensate some pixels in the organic light-emitting display panel to correct the uneven brightness and darkness on the organic light-emitting display panel, so that the brightness of the organic light-emitting display panel Show consistent. [0003] In the prior art, when compensating pixels in an organic light-emitting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0233G09G2320/0271G09G2330/021
Inventor 李军周井雄周瑞渊周莹高翔宇
Owner WUHAN TIANMA MICRO ELECTRONICS CO LTD
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