Reflective polarizing module having diffusion pattern and backlight unit including same
US10502886B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 2016 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Nov 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0046
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflective polarizing module is provided which includes a reflective polarizing sheet to selectively transmit light; a light-condensing sheet having continuously repeating light-condensing bodies, wherein each of the light-condensing bodies has a gradually decreasing transverse cross-sectional area from the lower portion to the upper portion of the reflective polarizing sheet, and the upper end of the first unit light-condensing body is bonded to the lower portion of the reflective polarizing sheet so as to have a first transverse width; and a coating layer on the upper surface of the reflective polarizing sheet and having a diffusion pattern to diffuse light transmitted through the reflective polarizing sheet, the diffusion pattern being constituted by a plurality of diffusion protrusions protruding from the upper surface of the coating layer, wherein at least some of the plurality of diffusion protrusions are formed to have a transverse width relatively smaller than the first transverse width.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.