Liquid crystal phase modulation device having elongated spacer in liquid crystal layer
US11789319B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2020 |
| Grant date | Oct 17, 2023 |
| Priority date | — |
| Expiry date | Dec 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/50
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal phase modulation device includes a first substrate, a second substrate, a liquid crystal layer, at least one first spacer, and a first alignment layer. The second substrate is opposite to the first substrate. The liquid crystal layer is between the first substrate and the second substrate. The one first spacer is between the first substrate and the second substrate. The first alignment layer is adjacent to the liquid crystal layer and the first spacer, and has a first alignment direction. The first spacer has a first length in the first alignment direction and a second length in a direction perpendicular to the first alignment direction as view from top, and the first length is greater than the second length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.