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Display panel brightness control method and device

A technology of a display panel and a control method, which is applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of reducing the user's interest in using the display panel, insufficient compensation accuracy, and uneven brightness of the display panel.

Active Publication Date: 2019-04-09
硅谷数模(苏州)半导体股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a method and device for controlling the brightness of a display panel to at least solve the problem in the related art that when adjusting the gray-scale compensation voltage to eliminate the uneven brightness of the display panel, the compensation accuracy is not enough, which reduces the user's Technical issues of interest in using display panels

Method used

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  • Display panel brightness control method and device
  • Display panel brightness control method and device

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Embodiment 1

[0036] figure 1 It is a flowchart of a method for controlling brightness of a display panel according to an embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0037] Step S102, acquiring a plurality of pixel values ​​processed by the image processor, wherein the bit width of each pixel value is the first preset bit width;

[0038] Step S104, performing data type conversion on each pixel value to obtain a plurality of pixel values ​​with a second preset bit width, wherein the second preset bit width is higher than the first preset bit width;

[0039] Step S106, sending the pixel value of the second preset bit width to the digital-to-analog conversion module to determine the voltage output value of each sub-pixel of the display panel, wherein a first linear relationship exists between the voltage output value and the screen brightness of the display panel ;

[0040] Step S108, adjusting the voltage output value to contro...

Embodiment 2

[0066] figure 2 A schematic diagram of another optional display panel brightness control device according to an embodiment of the present invention, as shown in figure 2 As shown, the device includes: an image processor 21, a digital gamma corrector 23, a Demura module 25, and a digital-to-analog conversion module 27, wherein,

[0067] The image processor 21 outputs a plurality of pixel values ​​of the display panel, wherein the bit width of each pixel value is a first preset bit width;

[0068] A digital gamma corrector 23, configured to perform data type conversion on a plurality of pixel values ​​to obtain a plurality of pixel values ​​of a second preset bit width, wherein the second preset bit width is higher than the first preset bit width;

[0069] Demura module 25, configured to correct the pixel value of the second preset bit width, so as to determine the voltage output value of each sub-pixel in the display panel;

[0070] The digital-to-analog conversion module 2...

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Abstract

The invention discloses a display panel brightness control method and device. The method comprises the steps: obtaining a plurality of pixel values processed by an image processor, wherein the bit width of each pixel value is a first preset bit width; performing data type conversion of all pixel values to obtain a plurality of pixel values with a second preset bit width, wherein the second presetbit width is greater than the first preset bit width; sending the pixel values of the second preset bit width into a digital-to-analog conversion module to determine the voltage output value of each sub-pixel of the display panel, wherein the voltage output value and the screen brightness of the display panel are in a first linear relation; and adjusting the voltage output value to control the screen brightness of the display panel. According to the method and the device, the technical problem that the interest of a user in using the display panel is reduced due to insufficient compensation precision when the phenomenon of uneven brightness of the display panel is eliminated by adjusting the gray scale compensation voltage in the related art is solved.

Description

technical field [0001] The present invention relates to the field of display panel control, in particular to a method and device for controlling brightness of a display panel. Background technique [0002] In related technologies, the display panel often has uneven brightness and various display traces, that is, the Mura phenomenon. There are many reasons for this phenomenon, one of which is due to the circuit layout process in the display panel. The attenuation of the input signal is inconsistent, resulting in a difference in display brightness. If Mura is to be eliminated, the current method is generally to adjust the display brightness by adjusting the gray scale value of the display to achieve the effect of uniform display brightness of the display panel, but this When adjusting the gray-scale compensation voltage in this way, it often occurs that the calculation of the gray-scale value is inaccurate, and the value of the value is large, resulting in an error in the valu...

Claims

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Application Information

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IPC IPC(8): G09G3/20G09G5/10
CPCG09G3/2074G09G5/10G09G2320/0233G09G2310/027G09G2320/0673G09G3/20G09G2320/0276G09G2320/0626
Inventor 焦歆朱宁
Owner 硅谷数模(苏州)半导体股份有限公司
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