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P‐158: Generation of Pretilt Angle and an Alignment Layer Utilizing Binary Mixture in PI‐less Vertical Alignment Mode
Author(s) -
Lee Gwan Yong,
Lee Jun Hyeok,
Song Seong Min,
Manda Ramesh,
Lim Young Jin,
Lee Seung Hee
Publication year - 2020
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 - 10.1002/sdtp.14301
Subject(s) - polyimide , materials science , transmittance , binary number , mesogen , layer (electronics) , polymer , optoelectronics , optics , mode (computer interface) , composite material , physics , computer science , liquid crystalline , mathematics , arithmetic , operating system
We demonstrate new approach of polyimide (PI)‐less polymer stabilized vertical alignment (PS‐VA) mode in which binary mixture of single kind of reactive mesogen and LC induces a VA with temperature treatment. The induced VA is fixed at first UV exposure and then a pretilt angle is generated with second UV exposure. The proposed device with two‐step UV exposure exhibits excellent electro‐optics such as fast response time and enhanced on‐state transmittance. This approach fixes a vertical alignment physically unlike chemical bonding in conventional PI‐less VA mode, giving rise to high reliability.