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P‐31: Cell Gap Measurement Methods for Low‐Cell‐Gap and Single‐Polarizer Reflective LCDs
Author(s) -
Lee Seo Hern,
Park Won Sang,
Lee GiDong,
Kim Jae Chang,
Yoon TaeHoon
Publication year - 2001
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1831949
Subject(s) - polarizer , measure (data warehouse) , optics , band gap , materials science , optoelectronics , physics , computer science , birefringence , database
We propose two novel methods to measure the cell gap of a liquid crystal cell. One is a method to measure the cell gap of a low cell‐gap TNLC cell by rotating a quarter‐wave retarder. With the proposed method, we can measure the cell gap d of TNLC cells with d < 4 μm. The other is a method to measure the cell gap of a single‐polarizer reflective LC cell as well as the wavelength dependence of the retardation Δnd by using a spectrometer.