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P‐72: Is the Photo‐Elasticity of PSAs for LCD Panels Reducible?
Author(s) -
Kusama Kentaro,
Matano Tadashi,
Ohashi Yuki,
Kobayashi Mamoru,
Nagamoto Koichi
Publication year - 2008
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 - 10.1889/1.3069427
Subject(s) - elasticity (physics) , materials science , durability , adhesive , composite material , leakage (economics) , layer (electronics) , economics , macroeconomics
To overcome the light‐leakage problem of LCD panels the effect of the mechanical elasticity on the photo‐elasticity of pressure sensitive adhesives (PSAs) was investigated. Among various cross‐linked acrylic copolymer‐based PSAs those with UV irradiation had lower photo‐elasticity regardless of their high mechanical elasticity and resulted in minor light leakage. The 17 inch test panel fabricated with one of UV‐cured PSA formulations, of which photo‐elasticity coefficient was 3 × 10 −11 N/cm 2 , had little light leakage even after thermal durability test at 80 °C for 500 hrs and no detectable defect after various durability tests.