Effects of backlight profiles on perceived image quality for high dynamic range LCDs

被引：8

作者：

Chen, Chun-Ho ^{[1
,2
]}

Shieh, Han-Ping D. ^{[3
,4
]}

机构：

[1] Natl Tsing Hua Univ, Dept Photon, Hsinchu 300, Taiwan

[2] Natl Tsing Hua Univ, Inst Electroopt Engn, Hsinchu 300, Taiwan

[3] Natl Tsing Hua Univ, Dept Photon, Hsinchu 300, Taiwan

[4] Natl Tsing Hua Univ, Display Inst, Hsinchu 300, Taiwan

来源：

JOURNAL OF DISPLAY TECHNOLOGY | 2008年 / 4卷 / 02期

关键词：

backlight; liquid-crystal display (LCD); 2D-dimming;

D O I：

10.1109/JDT.2007.916017

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Locally dimmable backlight modules can effectively improve the dynamic range of liquid-crystal displays (LCDs) to human vision range. The resolution of addressable segments and the optical profile of these segments primarily determine the perceived image quality such as the contrast enhancement and boundary visibility. Contrast sensitivity function, the gradient of backlight image of pi/100 of background luminance (units: nits/degree), was found as the threshold for the visibility of boundaries. Additionally, a study on a recommended profile with an economical number of segments was studied. Our results confirm that image qualities with this backlight modulation are improved in contrast enhancement and boundary perception using 2D-dimming backlight.

引用

页码：153 / 159

页数：7

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