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1. (WO2017173863) GAMMA CORRECTION METHOD

Pub. No.:    WO/2017/173863    International Application No.:    PCT/CN2017/000029
Publication Date: Fri Oct 13 01:59:59 CEST 2017 International Filing Date: Wed Jan 04 00:59:59 CET 2017
IPC: G09G 5/10
Applicants: BOE TECHNOLOGY GROUP CO., LTD.
京东方科技集团股份有限公司
BEIJING BOE MULTIMEDIA TECHNOLOGY CO., LTD.
北京京东方多媒体科技有限公司
Inventors: XIAO, Xiangchun
肖向春
Title: GAMMA CORRECTION METHOD
Abstract:
A gamma correction method, comprising: measuring the minimum luminance (Lmin) and the maximum luminance (Lmax) of a display panel, wherein the minimum luminance (Lmin) is the luminance at grayscale level zero, and the maximum luminance (Lmax) is the luminance at a grayscale level n (S1); using the equation Lmin / Lmax = (x / n)m to calculate the value of a first intermediate parameter (x), where m is a gamma value of the display panel (S2); using the equation y = (n - x) / n to calculate the value of a second intermediate parameter (y) (S3); using the equation Lz = [(x + z × y) / n]m × Lmax to calculate the luminance at a grayscale level z (Lz), where z is an integer between 1 and (n - 1) (S4); and using the minimum luminance (Lmin) and maximum luminance (Lmax) to calculate the luminance from grayscale level 1 to grayscale level (n-1) and to modulate the luminance of the display panel (S5).