利用负性双折射补偿膜改善LCD视角

Improvement of LCD viewing Angles by Negative Birefringence Compessation Films

利用负性双折射光学补偿膜可以显著地改善单畴与多畴ＬＣＤ的视角。本文评述了对ＴＮ、ＳＴＮ垂直排列与平行排列ＬＣＤ进行负性双折射补偿的主要应用情况。最近，有三种利用负性双折射光学补偿膜增大了视角锥的ＴＦＴ＿ＬＣＤ屏正在被商品化。这些屏包括：（１）由美国的ＴＦＴ＿ＬＣＤ供货商提供的补偿单畴ＴＦＴ＿ＴＮ屏；（２）夏普的补偿双畴Ｓｕｐｅｒ＿ＶＴＦＴ＿ＴＮ屏；（３）富士通的超宽补偿四畴垂直排列ＴＦＴ＿ＶＡ屏。

The negative birefringence optical compensation films can be used to significantly improve the viewing angles of single_domain and multi_domain LCDs. We review the major applications of the applications of negative birefringence compensation to TN, STN, vertically aligned LCDs, and parallel aligned LCDs. Most recently, there are three TFT/LCD panels with improved large viewing cone being commercialized with the use of the negative birefringence optical compensation films. These panels include:(1). US TFT/LCD vendors compensated single domain TFT/TN panels;(2). Sharp compensated 2_domain Super_V TFT/TN panels; and (3). Fujitsu super_wide compensated 4_domain vertical aligned TFT/VA panels.