Viewing angle control device and viewing angle controllable display apparatus
US10216018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2017 |
| Grant date | Feb 26, 2019 |
| Priority date | — |
| Expiry date | Oct 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2413/10
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A viewing angle control device including at least one liquid crystal panel, at least one compensation film and polarizers is provided. Each of the at least one liquid crystal panel includes two transparent conductive layers and liquid crystal molecules. The polarizers include at least one first polarizer and a second polarizer. The at least one first polarizer is located between the at least one compensation film and the at least one liquid crystal panel. The second polarizer is located at a side of the at least one liquid crystal panel, the at least one compensation film and the at least one first polarizer. When there is no potential difference between the transparent conductive layers, an optical axis of each of the liquid crystal molecules is parallel or vertical to a transmission axis of the at least one first polarizer. A viewing angle controllable display apparatus is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.