Gamma curve adjusting method, gamma voltage generator and display device

A technology for display devices and adjustment methods, applied to instruments, static indicators, etc., can solve problems such as poor image quality, and achieve the effect of increasing contrast and image quality

Active Publication Date: 2014-09-03
深圳易加仁技术有限公司
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Problems solved by technology

[0009] However, since the grayscale values ​​of multiple sub-pixels of the picture may be concentrated in a specific range of values, if the gamma curve or the gamma reference voltage V cannot be dynamically adjusted GMA_1 ~V GMA_N , will sacrifice the contrast of the picture, and make the image quality less good

Method used

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  • Gamma curve adjusting method, gamma voltage generator and display device
  • Gamma curve adjusting method, gamma voltage generator and display device
  • Gamma curve adjusting method, gamma voltage generator and display device

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Embodiment Construction

[0038] [Embodiment of Gamma Curve Adjustment Method]

[0039] Please refer to image 3 , image 3 It is a flowchart of a method for adjusting a gamma curve according to an embodiment of the present invention. The gamma curve adjustment method is used in a display control system, which is implemented by hardware or software and hardware, and the display control system is used in a backlight or self-luminous display device, such as a liquid crystal display device or an organic light emitting diode display device.

[0040] First, in step S301, the grayscale value distribution of each pixel of the screen is analyzed through the control circuit of the display control system (for example, a timing controller) or the front-end operating system to obtain the grayscale value distribution of each sub-pixel of each color. That is, the statistical number and the statistical ratio of the sub-pixel grayscale value of the statistical screen fall within each preset interval. For example, the gray...

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Abstract

The invention discloses a gamma curve adjusting method, a gamma voltage generator and a display device. The method is used for a display control system of the display device, and includes the steps of: analyzing the distribution of all sub-pixel gray scale values of all colors of a picture; and adjusting at least one gamma reference voltage according to the distribution of the sub-pixel gray-scale value of the color to enable the number of a plurality of gray scales and gray scale voltages corresponding to a plurality of sub-pixel gray scale values in at least one preset interval with a relatively large statistical quantity or a relatively large rate to be increased, and to enable the number of a plurality of gray scales and gray scale voltages corresponding to a plurality of sub-pixel gray scale values in at least one preset interval with a relatively small statistical quantity or a relatively small rate to be decreased.

Description

Technical field [0001] The present invention relates to a display device, and in particular to a gamma curve adjustment method and a gamma voltage generator for a display control system. Background technique [0002] Currently, display technology is developing rapidly, and liquid crystal display (LCD) is widely used as an image output device for various electronic devices. The liquid crystal molecules in the liquid crystal display device are deflected by the applied voltage to control the light transmittance of the corresponding sub-pixels. [0003] Please refer to figure 1 , figure 1 It is a partial block diagram of a traditional display control system. in figure 1 In the conventional display control system, the gamma voltage generator 11 receives a system voltage AVDD, and generates multiple gamma reference voltages V according to its multiple resistors 112 connected in series. GMA_1 ~V GMA_N . Then, the gray-scale and gray-scale voltage generator 122 of the source driving ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/36G09G3/20
Inventor 刘鸿达
Owner 深圳易加仁技术有限公司
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