3,4-dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-suc...

Details 3,4-dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-suc... 3,4-dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-suc...

2011-03-08

2011-03-08

Wu, David (Department: 1762)

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

Alignment layer of specified composition

C428S001200, C525S420000, C525S436000, C528S332000, C528S335000, C528S350000, C528S353000, C528S363000, C549S477000, C562S488000, C562S511000, C562S887000

Reexamination Certificate

active

07901745

ABSTRACT:
3,4-Dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-succinic dianhydride is provided. The tetracarboxylic dianhydride is represented by Formula 1, which is described in the specification. Further provided is a liquid crystal aligning agent comprising a polyimide prepared using the tetracarboxylic dianhydride and a solvent. Further provided is a liquid crystal alignment layer formed using the liquid crystal aligning agent. The liquid crystal alignment layer exhibits excellent electro-optical properties and good processability in terms of printability.

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International Search Report in counterpart International Application No. PCT/KR2007/006898, mailed Feb. 18, 2008.

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