The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 25, 2021
Filed:
Nov. 16, 2018
Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Wuhan, CN;
Wei Wang, Wuhan, CN;
Yaojen Chang, Wuhan, CN;
Abstract
A Mura compensation method and device for a curved screen are disclosed. The method includes: dividing each of curved portions into blocks; acquiring measured luminance values of each of the illuminated sub-pixels in a non-curved portion and measured luminance values of each of the illuminated blocks in the curved portions according to grayscale values, wherein each of measured luminance values has a corresponding relationship with one of the grayscale values; and using the measured luminance values and the grayscale values in a gamma relational expression, solving for coefficients and a gamma value in the gamma relational expression by a fitting process, finding a theoretical luminance value corresponding to each of the grayscale values in a gamma curve according to the gamma value, and using the theoretical luminance value, the coefficients, and the gamma value in the gamma relational expression to solve for a compensation grayscale value.