DocumentCode
2697440
Title
LCD pretilt angle measurement using QHQ compensation method
Author
Li, Y.W. ; Kwok, H.S.
Author_Institution
Dept. of Electron. & Electr. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
fYear
2003
fDate
12-14 Sept. 2003
Firstpage
235
Lastpage
236
Abstract
We would like to propose a new, simple method to evaluate the pretilt angle of a transmissive or reflective LCD cell. The compensator is consisted of two quarter-wave plates (QWP) and one half-wave plate (HWP). By proper adjusting the orientation of quarter wave plate and half wave plate, the phase value of the compensator which corresponding to the minimum transmission can be obtained. We can make use such value for calculating the actual pretilt angle.
Keywords
light reflection; light transmission; liquid crystal displays; molecular orientation; optical retarders; LCD pretilt angle measurement; QHQ compensation method; half-wave plate; quarter-wave plates; reflective LCD cell; transmissive LCD cell; Delay lines; Goniometers; Laser theory; Liquid crystal displays; Manufacturing; Optical reflection; Optical retarders; Polarization; Solid modeling; Testing;
fLanguage
English
Publisher
ieee
Conference_Titel
Optoelectronics, Proceedings of the Sixth Chinese Symposium
Print_ISBN
0-7803-7887-3
Type
conf
DOI
10.1109/COS.2003.1278211
Filename
1278211
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