Fringe field switching of a twisted nematic liquid crystal device for a single-cell-gap transflective display.
We propose an optical configuration of a twisted nematic liquid crystal device driven by a fringe field for a single-cell-gap transflective display. The dark state of the reflective part is realized by a nematic liquid crystal layer with a twist angle of 63.6 degrees and retardation of 194 nm, while a quarter-wave plate is inserted for the dark state of the transmissive part. Wavelength dispersion of the liquid crystal layer is suppressed by introducing a half-wave plate. Different directions of electric fields rotate liquid crystals to 15 degrees for the bright state of the reflective part, but to -30 degrees for that of the transmissive part. With the proposed configuration, we can realize a high-brightness single-gamma transflective display in a single-cell-gap structure without any in-cell retardation layers.
School of Electrical Engineering, Pusan National University, Busan, South Korea.
Gak Seok
GS
Lee
Jeong Hyun
JH
Lee
Dong Han
DH
Song
Jae Chang
JC
Kim
Tae-Hoon
TH
Yoon
Dae Lim
DL
Park
Seong Soo
SS
Hwang
Dae Hyun
DH
Kim
Sung Il
SI
Park