Displays with polarizer layers for electronic devices
US9075199B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2012 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Aug 16, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1056
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electronic device may have a display. Inactive portions of the display may be masked using an opaque masking layer. An opening may be provided in the masking layer. A camera may receive light through the opening in the opaque masking layer. The display may include upper and lower polarizers, a color filter layer, and a thin-film transistor layer. The upper polarizer may have an unpolarized window aligned with the opening in the opaque masking layer for the camera, a logo, or another internal structure. The unpolarized window may be formed from openings in polarizer layers such as a polyvinyl alcohol layer and optical retarder layers. The openings may pass through all or less than all of the polarizer layers. The openings may be filled with transparent filler material. The polarizer may include a try-acetyl cellulose layer that continuously covers the opening in other polarizer layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.