Date

Place

[P1-89]
14:00 ~ 15:30
Title:Polar Anchoring Energy of PS-VA Panel
Keunwoo Park, Nakcho Choi, Eunhee Han, Yeogeon Yoon, and Namseok Roh (Samsung Display Co., Ltd., Korea)
Abstract: In Polymer-stabilized vertical alignment mode(PS-VA), the orientation of the Liquid Crystals(LCs) is a very important thing. To make 4 domains in the sub pixel in the PS-VA, the UV light is expossed to the panel that is filled with liquid crystals including reactive mesogens(RM). When there is no the UV exposure process, there is no pretilt angle of LC that is aligned vertically. On the other hand, when UV exposure is applied, LCs get to be a little tilt angle at the black state. As a result, LCs have a fast response time.?In this paper, we have measured the polar anchoirng energy in the PS-VA. We have carried out two experiments. One is about the relationship between the Polar anchoring energy and the UV exposure. The other is the Polar anchoring energy and thickness of the alignment layer. We measured the optical retardations(R) ?accoriding to various voltages for calculating the Polar anchoring energy.
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