Pixel circuit for writing, handwriting display panel and handwriting display system
US11249597B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 8, 2018 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Oct 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/04883
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A pixel circuit, a handwriting display panel and a handwriting display system are provided. The pixel circuit includes: a write-in control circuit, a light-emitting circuit, a display control circuit and an erasing control circuit. The write-in control circuit includes a photosensitive switch, and the photosensitive switch is capable of being turned on under illumination of first light; the light-emitting circuit includes a first light-emitting component, which is configured to emit the first light to illuminate the photosensitive switch where the photosensitive switch is turned on; the display control circuit includes a display unit, which is configured to perform display operation where the photosensitive switch is turned on; and the erasing control circuit includes an induction switch, and the induction switch is controllable to be turned on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.