Optical sheet module consisting of optical sheets having different thicknesses
US10598846B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2013 |
| Grant date | Mar 24, 2020 |
| Priority date | — |
| Expiry date | Jun 24, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/133607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical sheet module consisting of optical sheets having different thicknesses, includes: a first base film having a predetermined thickness and transmitting light from a lower portion thereof through an upper portion thereof; an upper optical sheet formed on the first base film and having a first structural pattern in which the upper optical sheet protrudes upwardly and the cross-sectional area thereof decreases when progressing toward an upper portion thereof; a second based film laminated beneath the upper optical sheet so as to transmit light from a lower portion thereof to the upper optical sheet; and a lower optical sheet formed on the second base film and having a second structural pattern in which the lower optical sheet protrudes toward the upper optical sheet and the cross-sectional area thereof decreases when progressing toward an upper portion thereof. The first base film is relatively thicker than the second base film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.