Combination optical film, laminated combination optical film and image display
US8432515B2 · kind B2 · utility
2Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2005 |
| Grant date | Apr 30, 2013 |
| Priority date | — |
| Expiry date | Nov 14, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/28
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The combination optical film of the invention comprises a plurality of optical films in which at least one end face of the optical films are butted against one another, wherein the butted end faces substantially match one another in shape, the butted end faces each have a portion non-vertical to the front and back surfaces of the optical films, and the end faces are butted against one another so as not to form a continuous gap in the normal direction of the optical films from the front to back surfaces. The combination optical film can prevent light leakage without degrading appearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.