Sensitivity of the photo-crosslinkable polyimide for liquid crystal alignment

Wen Chin Lee; Chain-Shu Hsu; Shin Tson Wu

doi:10.1143/JJAP.40.5942

Sensitivity of the photo-crosslinkable polyimide for liquid crystal alignment

Wen Chin Lee^*, Chain-Shu Hsu, Shin Tson Wu

^*Corresponding author for this work

Department of Applied Chemistry

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Two methods were developed for enhancing the photosensitivity of the cinnamates-contained polyimide (PICA). One is to increase the content of cinnamate side chain in PICA main chain and another is to blend some photosensitizer into PICA films. Our experimental results show that increasing the rate of photo-dimerization decreases the alignment ability of the PICA films. Using the molecular simulation method, we successfully describe the photoalignment mechanism of the PICA films. It is also found that photo-induced LC alignment ability of the PICA film could be enhanced through choosing a proper coating solvent.

Original language	English
Pages (from-to)	5942-5946
Number of pages	5
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	40
Issue number	10
DOIs	https://doi.org/10.1143/JJAP.40.5942
State	Published - 1 Oct 2001

Keywords

Cinnamate
Liquid-crystal display
Photoalignment mechanism
Polyimide
Sensitivity
UV

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title = "Sensitivity of the photo-crosslinkable polyimide for liquid crystal alignment",

abstract = "Two methods were developed for enhancing the photosensitivity of the cinnamates-contained polyimide (PICA). One is to increase the content of cinnamate side chain in PICA main chain and another is to blend some photosensitizer into PICA films. Our experimental results show that increasing the rate of photo-dimerization decreases the alignment ability of the PICA films. Using the molecular simulation method, we successfully describe the photoalignment mechanism of the PICA films. It is also found that photo-induced LC alignment ability of the PICA film could be enhanced through choosing a proper coating solvent.",

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author = "Lee, {Wen Chin} and Chain-Shu Hsu and Wu, {Shin Tson}",

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AU - Lee, Wen Chin

AU - Hsu, Chain-Shu

AU - Wu, Shin Tson

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N2 - Two methods were developed for enhancing the photosensitivity of the cinnamates-contained polyimide (PICA). One is to increase the content of cinnamate side chain in PICA main chain and another is to blend some photosensitizer into PICA films. Our experimental results show that increasing the rate of photo-dimerization decreases the alignment ability of the PICA films. Using the molecular simulation method, we successfully describe the photoalignment mechanism of the PICA films. It is also found that photo-induced LC alignment ability of the PICA film could be enhanced through choosing a proper coating solvent.

AB - Two methods were developed for enhancing the photosensitivity of the cinnamates-contained polyimide (PICA). One is to increase the content of cinnamate side chain in PICA main chain and another is to blend some photosensitizer into PICA films. Our experimental results show that increasing the rate of photo-dimerization decreases the alignment ability of the PICA films. Using the molecular simulation method, we successfully describe the photoalignment mechanism of the PICA films. It is also found that photo-induced LC alignment ability of the PICA film could be enhanced through choosing a proper coating solvent.

KW - Cinnamate

KW - Liquid-crystal display

KW - Photoalignment mechanism

KW - Polyimide

KW - Sensitivity

KW - UV

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EP - 5946

JO - Japanese Journal of Applied Physics

JF - Japanese Journal of Applied Physics

SN - 0021-4922

IS - 10

ER -

Sensitivity of the photo-crosslinkable polyimide for liquid crystal alignment

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Keywords

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