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A Study of Electro-optical Characteristics of Full-HD LCOS Panel Depending on Various Cell Gaps  

Son, Hong-Bae (Dept. of Electronics and Electrical Engineering, Dankook University)
Kim, Min-Seok (Dept. of Electronics and Electrical Engineering, Dankook University)
Kang, Jung-Won (Dept. of Electronics and Electrical Engineering, Dankook University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.46, no.8, 2009 , pp. 6-11 More about this Journal
Abstract
The electro-optical characteristics of the Liquid Crystal on Silicon (hereinafter "LCOS") micro-display on vertically alignment (VA) mode were studied with 3-dimensional LC code. 5 different cell gaps, such as 1.4 ${\mu}m$, 1.8 ${\mu}m$, 2.1 ${\mu}m$, 2.4 ${\mu}m$ and 2.8 ${\mu}m$, were selected. The reflectance-voltage (R-V) characteristics, distribution of reflected light, reflectance, optical fill factor and contrast ratio were calculated and investigated depending on various cell gaps. Due to the surface anchoring effect, higher cell gap showed higher reflectance. However, considering the optical fill factor and contrast ratio, middle-height 2.1 ${\mu}m$ showed the best electro-optical characteristic. 0.7 inch Full-HD LCOS panels having same geometry and material property were fabricated. The reflected light intensity and contrast ratio were measured and the measured results were well-matched to the calculated results.
Keywords
LCOS; Cell Gap; Microdisplay; VA Mode;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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