公开(公告)号：US20140320552A1

公开(公告)日：2014-10-30

申请号：US14261926

申请日：2014-04-25

Applicant: LG DISPLAY CO., LTD.

Inventor： Woongjin SEO ,  Moojong LIM ,  Jaehong KIM ,  Junwoo JANG ,  Taeyong PARK ,  Seonmee LEE ,  Taeuk KIM

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/3406 ,  G09G2320/0606 ,  G09G2320/064 ,  G09G2320/0673 ,  G09G2354/00 ,  G09G2360/144 ,  G09G2360/16

Abstract: A gamma compensation method and a display device using the same are disclosed. The gamma compensation method includes: sensing a level of external illuminance; determining whether the sensed level of external illuminance is equal to or lower than a predetermined illuminance, wherein when the sensed level is equal to or lower than the predetermined illuminance, the luminance of the display device is reduced to an optimum luminance; and modulating gray levels of input data of the display device based on a first gamma curve when the sensed level of external illuminance is equal to or lower than the predetermined illuminance, and modulating based on a second gamma curve when the sensed level of external illuminance is greater than the predetermined illuminance, wherein the first gamma curve includes a concave curve set in a low gray level area and a convex curve set in a high gray level area, and the concave curve and the convex curve are connected via an inflection point.

Abstract translation: 公开了一种伽马补偿方法及使用其的显示装置。 伽马补偿方法包括：感测外部照度的水平; 确定感测到的外部照度的电平是否等于或低于预定照度，其中当感测电平等于或低于预定照度时，显示装置的亮度降低到最佳亮度; 以及当感测到的外部照度的水平等于或低于预定照度时，基于第一伽马曲线调制显示装置的输入数据的灰度级，并且当感测到的外部照度的水平为 大于预定照度，其中第一伽马曲线包括设置在低灰度级区域中的凹曲线和设置在高灰度级区域中的凸曲线，并且凹曲线和凸曲线经由拐点连接。