Single-Cell-Gap Transflective TFT-LCDs Using Vertical Alignment Mode
Date Issued
2007
Date
2007
Author(s)
Lee, Jen-Chieh
DOI
zh-TW
Abstract
This research in this thesis is based on the use of Vertically Aligned (VA) liquid crystal mode in the design and development of single-cell-gap Transflective TFT-LCDs. In particular, we focus on using different electrode designs between T and R part in order to match the corresponding T-V and R-V curves. Since the light passes through the liquid crystal layer twice in the R part but only once in the T part, the structure we design is required to produce stronger electric fields in T part and weaker electric fields in the R part so that similar retardation change in T and R can be obtained. As a result, the transmittance and reflectance can become very similar even when the pixel is driven by a single TFT-driving circuit. Apart from matching the T-V and R-V curves, we also try to use compensation film and multi-domain approaches to simulate and improve the narrow viewing angle property of the VA liquid crystal mode.
This thesis is divided into two parts; the first one is based on a Partial-Switching scheme which employs a partial distributed electrode design while the second one is based on the use of a VA-FFS liquid crystal mode which has a VA liquid crystal mode for the original OFF state and FFS mode for the driven ON state.
Subjects
半穿透半反射
液晶
顯示器
垂直配向
邊緣電場效應
部分電極
多域
廣視角
transflective
liquid crystal
LC
vertical alignment
Fringe Field Switching
VA-FFS
Partial Switching
multi domain
wide viewing angle
Type
thesis
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