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The gamma-flicker comprehensive adjustment method of liquid crystal display

A liquid crystal display, a technology for displaying grayscale, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of not being able to achieve the minimum value of Flicker, incorrect gamma curves, changes, etc., and achieve easy implementation and device structure Simple, to achieve the effect of synchronous adjustment

Active Publication Date: 2016-03-02
WUHAN JINGLI ELECTRONICS TECH
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Problems solved by technology

But this operation will cause the Gamma voltage to change, resulting in an incorrect Gamma curve
In addition, only adjusting the V-COM voltage cannot achieve the effect of the minimum Flicker value of each gray scale

Method used

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  • The gamma-flicker comprehensive adjustment method of liquid crystal display
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  • The gamma-flicker comprehensive adjustment method of liquid crystal display

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The Gamma-Flicker comprehensive adjustment method of liquid crystal display of the present invention adopts such as figure 2 and image 3The Gamma-Flicker synthesis instrument of the liquid crystal display shown is realized, and the Gamma-Flicker synthesis instrument of the liquid crystal display includes an optical probe 1, a multiplexing switch 2, an instrument operational amplifier module 3, a low-pass filter module 4, a controller 5 and Communication interface module6. The optical probe 1 includes an R probe 1-1, a G probe 1-2, a B probe 1-3 and a white light for collecting red light, green light, blue light and white light signals of the LCD screen and converting the light signals into voltage signals. Probes 1-4 also include reference probes 1-5 for reducing the error caused by the dark current of the probes, and all p...

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Abstract

The invention discloses a Gamma-Flicker comprehensive adjustment method for a liquid crystal display. The Gamma-Flicker comprehensive adjustment method for the liquid crystal display comprises the steps that a white light probe obtains a luminance signal I255 from an LCD screen, and a Flicker value K is calculated; voltage values and the V-COM value of a Gamma IC are adjusted to meet the requirements that the value of the luminance signal I255 is maximum, and the Flicker value K is minimum, and the maximum luminance value Imax is extracted; the white light probe obtains a luminance signal I0 from the LCD screen; the voltage values of the Gamma IC are adjusted to enable the value of the luminance signal I0 and the Flicker value K to be minimum, and the minimum luminance value Imin is extracted; a Gamma standard curve G is obtained according to the maximum luminance value Imax and the minimum luminance value Imin, and luminance standard values within the range from the gray level L0 to the gray level L255 are obtained according to the Gamma standard curve G; the voltage values of the Gamma IC are adjusted in sequence to enable the actual luminance value of the gray level of each region and the standard luminance value of the gray level of the region to be equal, and adjustment is accomplished.

Description

technical field [0001] The invention belongs to the field of liquid crystal displays, and in particular relates to a Gamma-Flicker comprehensive adjustment method for liquid crystal displays. Background technique [0002] With the development of science and technology, people put forward higher and higher requirements for the display effect of the display screen. The main factors restricting the display effect of the LCD screen are the color contrast Gamma and the screen flicker Flicker. The Gamma value is a measurement parameter describing the non-linear relationship between the brightness and the gray scale of the image display, and Flicker represents the flickering of the display screen. [0003] The Gamma standard of the human eye is 2.2, and the Gamma value needs to be adjusted to the range of the human eye during the module production process. The brightness of each gray scale is determined by the voltage of GammaIC. Adjusting Gamma value is actually adjusting GammaI...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/10
Inventor 彭骞赵正梁红军祁焱沈亚非陈凯唐奇林
Owner WUHAN JINGLI ELECTRONICS TECH
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