Liquid crystal displays with minimized transmission loss and enhanced off-axis color fidelity
US9645464B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2015 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Nov 11, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/136222
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A display may have upper and lower display layers. A layer of liquid crystal material may be interposed between the upper and lower display layers. The display layers may have substrates. The display layers may include a color filter layer having an array of color filter elements on a glass substrate and a thin-film transistor layer having a layer of thin-film transistor circuitry on a glass substrate. Dielectric layers within the display layers such as dielectric layers within the thin-film transistor layer may have differing indices of refraction. Reflections and color shifts due to index of refraction discontinuities may be minimized by interposing graded index dielectric layers between adjacent layers with different indices. The graded index layers may be formed from structures with a continuously varying index of refraction or structures with a step-wise varying index of refraction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.