Adhesive composition, and polarizing plates and LCDs utilizing the adhesive composition
US9017778B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2009 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | May 6, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133528
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a pressure-sensitive adhesive composition, and a polarizer and a liquid crystal display (LCD) device using the pressure-sensitive adhesive composition, and more particularly, to a pressure-sensitive adhesive composition including (A) an acrylic copolymer and (B) a liquid optically-anisotropic compound having a mesogen core in its structure. The liquid optically-anisotropic compound having a mesogen core in its structure according to the present invention has superior solubility and compatibility with pressure-sensitive adhesive resin, and thus the pressure-sensitive adhesive composition including the liquid optically-anisotropic compound can relax stress caused by shrinkage of the polarizer and effectively compensate negative birefringence. Therefore, the polarizer and the LCD device using the pressure-sensitive adhesive composition can prevent light leakage originating from stress concentration in spite of long-term use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.