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http://dx.doi.org/10.4313/JKEM.2004.17.1.065

Study of Liquid Crystal Device using a High Thermal Photopolymer  

황정연 (연세대학교 전기전자공학과)
남기형 (연세대학교 전기전자공학과)
이상민 (한양대학교 공업화학과)
서대식 (연세대학교 전기전자공학과)
김재형 (인제대학교 컴퓨터 응용과학과)
서동학 (한양대학교 공업화학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.17, no.1, 2004 , pp. 65-69 More about this Journal
Abstract
We synthesized photoalignment material of high thermal resistance with hydroxyl aromatic polyimide, and studied the liquid crystal (LC) aligning capabilities on the photopolymer layers. Also, electro-optical (EO) performances for the twisted-nematic (TN)-liquid crystal display (LCD) photoaligned with linearly polarized UV exposure were investigated. A good LC alignment with UV exposure on the photopolymer surface can be obtained. However, the low pretilt angles were obtained below 1$^{\circ}$. The Voltage-transmittance (V-T) curve without backflow bounce in the photoaligned TN cell with UV exposure was observed. The response time of photoaligned TN cell was measured about 24 ms. Finally, The photoaligned TN cell has few hysteresis, and shows the residual DC voltage that is less.
Keywords
High thermal; Photopolymer; Pretilt angle; Voltage-transmittance; Response time;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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