Polarization splitting sheet, optical sheet laminate, planar light source apparatus, and transmission-type display apparatus
US6624937B2 · kind B2 · utility
12Cited by
4References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1999 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Apr 5, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/13362
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a polarization splitting sheet (10) made of a transparent base material sheet (12), a coating layer (14) is provided on the rear surface of the base material sheet(12), this coating layer (14) having spherical beads (16) of a diameter in the range from 1 to 10 &mgr;m protruding from its surface, the spherical beads (16) of the coating layer (14) making contact with a smooth surface (18A) of a light-transmitting material (18). The half-value width of the diameter of the spherical beads (16) is made no greater than 1 &mgr;m, and the protrusion height of the spherical beads (16) from the coating layer (14) is made uniform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.