Textured high refractive index surface for reflective image displays
US10386547B2 · kind B2 · utility
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Key dates
| Filing date | Dec 5, 2016 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Dec 5, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A textured surface on the inward side of the high refractive index transparent front sheet in a reflective image display may lead to a display with a wider viewing angle. The textured surface may be in a random or a patterned array and may comprise microstructures that exhibit total internal reflection and Fresnel reflections. Electrophoretically mobile particles of similar size to the microstructures may improve coverage on the front sheet and improve frustration of TIR leading to darker dark states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.