[KSCI] Korea Science Citation Index Service

An Optical Configuration for Vertical Alignment Liquid Crystal cell with Wide Viewing Angle

Ji, Seung-Hoon (Dept. of Electronics Engineering, Dong-A University)
Lee, Gi-Dong (Dept. of Electronics Engineering, Dong-A University)

Publication Information

Journal of Information Display / v.9, no.2, 2008 , pp. 22-27 More about this Journal

Abstract

We propose an optical configuration of a vertical alignment (VA) liquid crystal (LC) cell to eliminate the light leakage in the diagonal direction. VA LC cell has an excellent contrast ratio in the normal direction due to the no phase-retardation. However, change of the phase-retardation occurs in all directions, which causes the light leakage and deteriorates the characteristics of the dark state. We designed the LC cell structure composed of multiple combinations with two A-plates and two C-plates in order to achieve wide viewing property on the Poincare sphere. From calculations, we show that the proposed structure can improve the viewing angle characteristics by compensating for the light leakage in all directions.

Keywords

Vertical alignment LC cell; Light leakage; Optical compensation; Poincare sphere;

Citations & Related Records

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