System and method for adjusting pure color frame brightness of RGBW panel

A technology of brightness and pure color, applied in the field of systems for adjusting the brightness of pure color pictures of liquid crystal display panels, can solve problems such as dark pictures, save costs, improve structural defects, and solve the effects of dark pictures of pure colors

Active Publication Date: 2016-11-16
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, compared with the Normal RGB architecture panel, the RGBW panel architecture has an unavoidable architectural defect, that is, for pure R, pure G, pure B and other pure color screens, the RGBW architecture panel will have a display defect that the picture is too dark

Method used

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  • System and method for adjusting pure color frame brightness of RGBW panel
  • System and method for adjusting pure color frame brightness of RGBW panel
  • System and method for adjusting pure color frame brightness of RGBW panel

Examples

Experimental program
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Effect test

Embodiment 1

[0042] A system for adjusting the brightness of a solid-color picture of an RGBW panel, built into the motherboard or a driver block capable of driving an LCD screen. refer to figure 1 , the system includes a detection unit, a calculation unit and a backlight drive unit.

[0043] Specifically, the detection unit is configured to detect the brightness of each frame of pixels in the solid color screen when the RGBW panel displays a solid color screen; and then calculate the brightness of the solid color screen according to the detected brightness of each frame of pixels. an average brightness value; and comparing the average brightness value with a preset average brightness target value to obtain a brightness gain value.

[0044] A calculation unit configured to calculate a current gain value according to the brightness gain value.

[0045] The backlight driving unit is configured to adjust the backlight voltage or backlight current output to the power supply channel of the b...

Embodiment 2

[0050] A system for adjusting the brightness of a solid-color picture of an RGBW panel, built into the motherboard or a driver block capable of driving an LCD screen. refer to figure 2 , the system includes a white sub-pixel gray scale value adjustment unit, a detection unit, a calculation unit and a backlight drive unit.

[0051] Specifically, the gray-scale value adjustment unit of the white sub-pixel is set to reduce the gray-scale value of the brightness of the white sub-pixel in the RGBW panel; Brightness to get the current brightness gain value.

[0052] The detection unit is configured to detect the brightness of each frame of pixels in the pure color screen when the RGBW panel displays a solid color screen; then calculate the average brightness value of the pure color screen according to the detected brightness of each frame of pixels ; and comparing the average brightness value with a preset average brightness target value to obtain a brightness gain value.

[005...

Embodiment 3

[0057] Such as Figure 8 As shown, it is a method of adjusting the brightness of the pure color picture of the RGBW panel according to the embodiment of the present invention. The method of this embodiment mainly includes step 101 to step 103 .

[0058] In step 101, when the RGBW panel displays a solid-color picture, the detection unit detects the brightness of each frame of pixels in the pure-color picture; then, the detection unit calculates the The average brightness value of the solid-color image; the detection unit compares the average brightness value with a preset average brightness target value to obtain a brightness gain value.

[0059] In step 102, the calculation unit calculates the current gain value according to the brightness gain value obtained in step 101.

[0060] In step 103, the backlight driving unit adjusts the backlight voltage or backlight current output to the power supply channel of the backlight according to the current gain value, thereby increasin...

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Abstract

The invention discloses a system and method for adjusting pure color frame brightness of an RGBW panel, and relates to a system and method for adjusting the pure color frame brightness of a liquid crystal display panel. A problem to be solved is a display defect that the frame of a RGBW frame panel is dark in the prior art. The system comprises a detection unit which is set to detect the brightness of each frame pixel of a pure color frame when the RGBW panel displays the pure color frame, then calculates the mean brightness value of the pure color frame according to the detected brightness of each frame pixel, compares the mean brightness value with a preset mean brightness target value, and obtains a brightness gain value. The system also comprises a calculation unit which is set to calculate a current gain value according to the brightness gain value; and a backlight drive unit which is set to adjust the backlight voltage or backlight current outputted to a power supply channel of a backlight source according to the current gain value, thereby increasing the brightness of each frame pixel. The system is suitable for the manufacturing field of liquid crystal displays.

Description

technical field [0001] The invention relates to a system and method for adjusting the brightness of a solid-color picture of a liquid crystal display panel. Background technique [0002] The RGB color mode is a color standard in the industry. It obtains a variety of colors by changing the three color channels of red (R), green (G), and blue (B) and superimposing them with each other. R, G, and B represent the colors of the three channels of red, green, and blue. The RGB color mode includes almost all colors that can be perceived by human eyesight, and is one of the most widely used color systems at present. The pixel (pixel) design of the traditional RGB LCD panel adopts the regular arrangement of the three primary colors of RGB, such as image 3 shown. exist image 3 Among them, R represents a red sub-pixel, G represents a green sub-pixel, and B represents a blue sub-pixel. [0003] The more popular RGBW technology has recently appeared. RGBW technology adds white to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36
CPCG09G3/3607G09G2320/0626G09G2320/0633
Inventor 张婷婷谭小平黄俊宏
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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