LED波长一致性和温度均匀性对背光源色差的影响  

Effect of LED Wavelength Consistency and Temperature Uniformity on Color Difference of LCD Backlight

作　　者：刘煜原[1] 罗毅[1,2] 韩彦军[2] 钱可元[1] 

机构地区：[1]清华大学深圳研究生院半导体照明实验室,广东深圳518055 [2]清华大学电子工程系,集成光电子学国家重点实验室,北京100084

出　　处：《半导体光电》2010年第1期104-107,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(60536020,60390074);国家“973”计划项目(2006CB302801,2006CB302804,2006CB302806,2006CB921106);国家“863”计划项目(2006AA03A105);北京市自然科学基金重点项目(4091001);深圳市产学研和公共科技专项资助项目(SY200806300244A)

摘　　要：直下式动态三基色LED背光源具有色域广、寿命长、节能环保、对比度高等优势,但许多因素限制了其颜色的表现力。研究了LED波长一致性、背光温度均匀度两个因素对色差的影响,指出为使色差小于人眼所能分辨范围(CIE1976色坐标体系Δu′v′小于0.005),LED的主波长波动范围应低于5nm,背光源不同位置的最大温差应低于8℃。Direct dynamic backlights based on trichromatic LEDs have significant advantages for liquid crystal display（LCD） such as wide color gamut, long lifetime, energy saving, high contrast and so on. However, its color rendering capacity was influenced by several factors. The effect of LED wavelength consistency and temperature uniformity of the backlight on color difference of direct dynamic backlights based on trichromatic LEDs is investigated. Experimental results show that, to keep the color difference indecipherable for human eyes, the fluctuation of LED wavelength should be held within 5 nm and the largest temperature difference among LEDs in the whole backlight should be less than 8℃.

关 键 词：三基色LED 直下式动态背光源 色差 

分 类 号：TN312.8[电子电信—物理电子学]