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Gamma correction and system with this gamma correction

A technology of brightness correction and correction method, which is applied in the field of correction, and can solve problems such as color temperature deviation, different hues and color shifts of displayed colors on the display panel, and achieve the effect of shortening time and reducing the difference in hue

Inactive Publication Date: 2009-05-13
GETAC TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the characteristics of each display panel are not necessarily the same. Therefore, when each display panel uses this standard Gamma voltage, it will easily cause problems such as different hue, color shift, or color temperature deviation of the displayed color of the display panel.

Method used

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  • Gamma correction and system with this gamma correction
  • Gamma correction and system with this gamma correction

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Embodiment Construction

[0012] figure 1 A flowchart showing the brightness correction method of the present invention. The brightness correction method of the present invention is suitable for a display panel of a liquid crystal display. First, an input signal set is provided to the display panel to display a plurality of image areas (step S110 ), wherein each image area has a different display color.

[0013] The above input signal group is used to control the display position and display color of the image area, which can be provided by a control device in the display panel or by an external device. When the input signal set is provided by an external device, the external device can provide the input signal set to the display panel through a DVI (digital visual interface).

[0014] Generally, the image displayed by the liquid crystal display is composed of three primary colors (R, G, B). Therefore, when the brightness is corrected, the display panel can display three image areas through the input...

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Abstract

This invention relates to a brightness correction method for one display panel which comprises the following steps: a, in display panel it displays multiple image areas with different display colors; b, testing image area responding to different grey step value with relative Gamma voltage; finally, according to tested grey values adjusting above grey value with Gamma voltage.

Description

technical field [0001] The present invention relates to a calibration method and system, in particular to a brightness calibration method and system. Background technique [0002] Due to the advantages of thin volume, light weight and low electromagnetic radiation, Liquid Crystal Display (LCD) has been widely used in recent years. For liquid crystal displays, since the cross-voltage between the lower plate and the lower plate of the liquid crystal panel is not in a linear relationship with the light transmittance, when the digital pixel data to be displayed is converted into a voltage signal input to both sides of the liquid crystal , the action of Gamma voltage correction must be performed to reduce the color distortion of the liquid crystal display. [0003] Generally, the image presented by the liquid crystal display is composed of three primary colors (RGB). Therefore, when performing the Gamma voltage correction operation, it is necessary to perform Gamma voltage corre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/36G09G3/20G02F1/133
Inventor 沈昌翰杨志富
Owner GETAC TECH CORP