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A kind of amoled screen gamma correction method and system

A calibration method and calibration system technology, applied in the field of AMOLED display, can solve the problems of time-consuming and labor-intensive, affecting the efficiency of mass production, and taking a long time.

Active Publication Date: 2022-03-11
昇显微电子(苏州)股份有限公司
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Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an AMOLED screen GAMMA correction method and system, which solves the problem that the traditional AMOLED screen GAMMA correction method is often time-consuming and labor-intensive, requiring a large amount of data to be measured to find the closest target voltage setting , high precision but takes a long time, which greatly affects the mass production efficiency

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  • A kind of amoled screen gamma correction method and system
  • A kind of amoled screen gamma correction method and system
  • A kind of amoled screen gamma correction method and system

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0063] see figure 1 , the present invention provides a technical solution: a correction system for AMOLED screen GAMMA, including:

[0064] The initial voltage characteristic measurement unit 1 calculates the initial voltage setting, measures the actual tristimulus value under the initial voltage setting, and sends the initial voltage setting and the actual tristimulus value to the conversion curve fitting unit 2;

[0065] The conversion curve f...

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Abstract

The invention discloses a method and system for correcting GAMMA of an AMOLED screen, relating to the field of AMOLED display technology, including: calculating the initial target tristimulus value of each gray scale; measuring the actual tristimulus value under the initial voltage setting, and fitting conversion Calculate the target voltage setting according to the target tristimulus value and conversion curve; measure the actual tristimulus value of each gray scale under the target voltage setting; judge whether the error between the actual tristimulus value and the initial target tristimulus value is less than the accuracy requirement, If it meets the requirements, output the current target voltage setting as the calibration result; if it does not meet the requirements, correct the target tristimulus value of each gray scale according to the error with the initial target tristimulus value and recalculate the target voltage setting until the accuracy is met requirements, it can effectively overcome the problem that the luminance of AMOLED displays cannot be accurately predicted due to the ELVDD voltage drop, and use an iterative method to quickly and accurately obtain the voltage setting that meets the GAMMA luminance characteristics.

Description

technical field [0001] The invention relates to the technical field of AMOLED display technology, in particular to an AMOLED screen GAMMA correction method and system. Background technique [0002] GAMMA calibration measures the display characteristics of the screen to construct the target voltage setting for each gray scale, so that the display characteristics of each gray scale conform to the expected GAMMA curve. Due to differences in electrical parameters such as threshold voltage and mobility and the severity of the IRDrop phenomenon caused by ELVDD voltage changes on AMOLED screens, the original GAMMA characteristics of different screens will not be exactly the same. In order to make the display characteristics of different screens conform to the standard GAMMA curve, GAMMA calibration is a necessary process in the mass production of AMOLED screens. [0003] Considering the influence of the IR drop phenomenon caused by the unique ELVDD voltage change of the AMOLED scr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G2320/0673
Inventor 孙权吴樟福秦良
Owner 昇显微电子(苏州)股份有限公司
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