Liquid crystal display with switchable viewing angle and method of viewing angle control
US9798169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2016 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Jul 21, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2201/123
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An LCD with switchable viewing angle includes a first substrate, second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode and a first alignment film. The second substrate is provided with a second electrode, a third electrode and a second alignment film. The liquid crystal molecules adjacent to the first alignment film are tilted at a first pretilt angle. The liquid crystal molecules adjacent to the second alignment film are tilted at a second pretilt angle. The second pretilt angle is in the range of 30° to 50°, and the first pretilt angle is in the range of 0° to 5°. When no bias voltage is applied to the first electrode, the LCD is displayed with a narrow viewing angle; and when a bias voltage is applied to the first electrode, the LCD is displayed with a wide viewing angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.