Wideband and wide-view circular polarizer for a transflective vertical alignment liquid crystal display.
We propose an optical configuration for a transflective mode with a circular polarizer for the vertical alignment liquid crystal cell, which can show the wideband property of high contrast in oblique incidence. The proposed configuration consists of a biaxial film and two uniaxial films for satisfying both the transmissive and the reflective modes. Optimization of the optical configuration of the circular polarizer has been performed on the Poincaré sphere in the entire visible wavelength range using the Stokes vector and the Mueller matrix method. We also verify the excellent optical characteristics of the proposed configuration by comparing the viewing angle and contrast ratio in the oblique direction with a conventional optical configuration in calculation.
Moon
Je-Wook
JW
Department of Electronics Engineering, Dong-A University, Busan 604-714, South Korea.
Kang
Wan-Seok
WS
Han
Hag yong
Hy
Kim
Sung Min
SM
Lee
Seung Hee
SH
Jang
Yong gyu
Yg
Lee
Chul Heon
CH
Lee
Gi-Dong
GD