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Gamma voltage correction method and device

A correction method and technology of gamma voltage, applied to instruments, static indicators, etc., can solve the problems of long gamma correction time, achieve the effects of reducing gamma correction time, improving production efficiency, and reducing the number of adjustments

Active Publication Date: 2016-06-22
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a gamma voltage correction method and device, which solves the problem of long time for the existing gamma correction and can improve production efficiency

Method used

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  • Gamma voltage correction method and device

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Embodiment

[0025] An embodiment of the present invention provides a gamma voltage correction method, such as figure 1 shown, including:

[0026] S1. Obtain the data voltage corresponding to the characteristic gray-scale point: on the display module, adjust the optical parameter corresponding to the characteristic gray-scale point to the target value, and obtain the adjusted data voltage corresponding to the characteristic gray-scale point, the Feature grayscale points are selected from the grayscale of binding points;

[0027] To adjust the gamma curve, a small amount of grayscale will be selected as the adjustment point. For example, for an 8bit color depth system, the grayscale is from 0 to 255. For example, 255, 223, 191, 128, 107, 64, 35, 15 and 0 can be selected. These points are called tie point gray levels. In this step, select some of the gray scales of the binding points as the characteristic gray scale points, and then perform the following operations on each characteristic g...

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PUM

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Abstract

The invention discloses a gamma voltage correction method and device, relates to the field of display, and can solve the present problem of long time of gamma correction so that production efficiency can be enhanced. The gamma voltage correction method comprises the steps that S1, data voltage corresponding to characteristic gray scale points is acquired; S2, gamma register values corresponding all binding point gray scales are acquired; S3, fine adjustment is performed: the gamma register values of all the binding point gray scales are inputted to a display module group, based on which fine adjustment is performed on the optical parameters of all the gray scales; and S4, testing is performed: a gamma curve of the display module group is tested and compared with a target gamma curve, and the step S3 is continuously performed if the gamma curve does not meet the requirements of product specifications until the display module group meets the requirements of the product specifications.

Description

technical field [0001] The present invention relates to the display field, in particular to a gamma voltage correction method and device. Background technique [0002] With the development of AMOLED (Active-matrix organic light emitting diode, active-matrix organic light emitting diode) display technology, more and more electronic products begin to use AMOLED display screens. However, in the production process of AMOLED display, there are still some difficulties to be overcome, one of which is the adjustment of optical parameters of AMOLED screen. [0003] Since the AMOLED display is driven by a current mode, and the operating point of the driving thin film transistor is in the linear region of the transfer characteristic, and the operating voltage range is narrow, the AMOLED is very sensitive to the change of the data voltage, and the difference as small as a few millivolts will be It is reflected in the display effect. On the other hand, whether it is an AMOLED display pa...

Claims

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Application Information

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IPC IPC(8): G09G3/3258
CPCG09G3/3258
Inventor 张志广张光均张昌杨华玲刘静
Owner BOE TECH GRP CO LTD
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