Liquid crystal display device and electronic apparatus for preventing liquid crystal drive voltage from lowering
US11615757B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | Mar 28, 2023 |
| Priority date | — |
| Expiry date | Apr 24, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2300/0852
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A liquid crystal display device according to the present disclosure includes: a liquid crystal unit including a pixel electrode, a counter electrode facing the pixel electrode, and a liquid crystal layer sealed between the pixel electrode and the counter electrode; a first writing circuit configured to write a positive polarity video signal among video signals whose polarity changes periodically; and a second writing circuit configured to write a negative polarity video signal among the video signals whose polarity changes periodically. The liquid crystal unit, the first writing circuit, and the second writing circuit are provided for each pixel. The first writing circuit and the second writing circuit include transistors having conductivity types different from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.