Viewing Angle Controllable LCD with a Single LC Layer
In this paper, we report our theoretical study on the viewing angle controllability of a liquid crystal display (LCD), with only a single LC layer. The proposed LCD pixel consists of two sub-pixels wherein one is transmittance controllable (TC) sub-pixel and the other is viewing angle controllable (VAC) sub-pixel. To optimize the viewing characteristics during the wide viewing angle (WVA) operational mode as well as the narrow viewing angle (NVA) mode, we investigated several architectures for the common electrode. The finite element method (FEM) study allowed us to come up with an optimized pixel architecture wherein the TC sub pixel comprises a consecutive round-cornered rectangle while the VAC sub-pixel is an ordinary rectangle. Our numerical simulation revealed that the range of viewing angle wherein the contrast ratio (CR) is greater than 50:1 is calculated to be 180°for WVA mode while that for NVA mode being 40°with respect to the horizontal direction, which implies that the presence of VAC sub-pixel does not deteriorate the wide-viewing characteristics.
Woo-Jung Shin Taeyoung Won Hark-Soo Park Jang-Won Choi
School of Electrical Engineering, Inha University, 253 Yonghyun-Dong,Namgu, Incheon, Korea Korea Institute of Science and Technology Information(KISTI),52-11 Eoeun-Dong, Yuseong-gu, Daejeon,
国际会议
上海
英文
30-34
2007-03-12（万方平台首次上网日期，不代表论文的发表时间）