Optical films for electronic device displays
US10281630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2016 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Dec 24, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display may include an optical film to promote sunglass-friendly viewing of the display. Displays may include linear polarizers. For example, a liquid crystal display may have a linear polarizer above a liquid crystal layer, whereas an organic light-emitting diode display may have a linear polarizer that forms a portion of a circular polarizer to reduce reflections in the display. Displays that emit linearly polarized light may not be compatible with polarized sunglasses. To ensure an optimal user experience for users wearing sunglasses, displays may include sunglass-friendly optical films. A sunglass-friendly optical film may be a film formed from a birefringent material such as a polymer or liquid crystal. The sunglass-friendly optical film may have an optical axis that is at a 45° angle relative to the optical axis of the underlying linear polarizer. The sunglass-friendly optical film may be patterned to have reduced thickness regions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.