P-GAMMA automatic adjusting method and device based on large and medium-size modules

A P-GAMMA, automatic adjustment technology, applied in nonlinear optics, instruments, optics, etc., can solve some problems such as color cast of the screen, and achieve the effect of high brightness pass rate, short adjustment time, and simple operation

Active Publication Date: 2018-10-12
WUHAN JINGCE ELECTRONICS GRP CO LTD
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the Flicker of the module can be adjusted very well, but because Gamma uses fixed data, due to

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • P-GAMMA automatic adjusting method and device based on large and medium-size modules
  • P-GAMMA automatic adjusting method and device based on large and medium-size modules
  • P-GAMMA automatic adjusting method and device based on large and medium-size modules

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] A P-GAMMA automatic adjustment method based on medium and large-sized modules proposed by the present invention, in terms of adjustment process, first adjusts Flicker, then adjusts gamma, and finally adjusts Flicker again, including the following steps, such as figure 1 Shown:

[0036] 1) Perform routine configuration, calibration and basic function tests on the optical tester, and configure Flicker parameters and P-Gamma adjustment parameters;

[0037] 2) According to the module IC manual, configure each binding point of the module and the corresponding register address;

[0038] 3) Analyze the Flicker parameters, adjust the Flicker by adjusting the Vcom register with the binary search algorithm, until the VCOM value corresponding to the minimum Flicker value is searched;

[0039] 4) Analyze the P-Gamma adjustment parameters...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a P-GAMMA automatic adjusting method and an automatic adjusting device based on large and medium-size modules. The method comprises the following steps: configuring Flicker parameters and P-Gamma adjusting parameters; configuring each binding point of the modules as well as corresponding register addresses; adjusting a VCOM register until searching out a VCOM value corresponding to the minimum Flicker value; sequentially adjusting Gamma adjusting on each binding point of the modules, in a Gamma adjusting process, adjusting corresponding positive voltage value V+ and negative voltage value V- corresponding to the binding point under a precondition of keeping symmetry of positive pressure and negative pressure, and implementing in a circulating mode until bright values of the modules are within a target brightness error range; implementing backward reading and verifying; and implementing OTP burning. The device comprises a PC, an adjusting PG, a picture check PG,an optical measuring instrument and modules. According to the method and device provided by the invention, a passing rate of quantitative grayscale brightness is guaranteed, namely brightness meets apassing rate of 255 greyscale brightness of a Gamma2.2 curve and under a condition that errors are within 0.2. Based upon experimental results, it is indicated that the device has the characteristicsof being high in adjusting speed and high in brightness passing rate.

Description

technical field [0001] The invention relates to the field of display and testing of liquid crystal modules, in particular to a P-GAMMA automatic adjustment method and device based on medium and large size modules. Background technique [0002] During the production process of medium and large size LVDS and VBYONE modules, the factory often needs to adjust the flicker, white balance and gamma curve of the module in order to better restore the color and improve the image quality. Due to the differences between different modules, if all the modules use the same adjustment data, it is easy to produce flicker, color cast, and affect the image quality. [0003] At present, the adjustment method adopted by the industry is: (1) Engineers manually adjust a set of empirical data on the sample module, and then burn it into all modules during the production process. Due to actual differences, some screens are prone to flicker and color cast; (2) Adjust each screen. However, due to the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G09G3/36G02F1/13
CPCG02F1/1309G09G3/36
Inventor 杨柳徐鹏
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap