Photosensitive display panel
US7800602B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 2004 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | May 2, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0412
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A light-sensitive (i.e., touch-sensitive) display device that requires less circuitry than the currently available light-sensitive display devices is presented. Unlike the currently available devices, which require at least two switching elements and a capacitor to implement a photosensitive switch, the invention only requires one switching element. The device of the invention includes a substrate with a plurality of scan lines, a plurality of read-out lines, a power line, and an array of photosensitive switches formed thereon. The scan lines and the read-out lines extend in directions that are substantially perpendicular to each other, forming pixels. One photosensitive switch is formed in each pixel, and each photosensitive switch has one light-sensitive transistor. The transistor connects the power line to one of the read-out lines in response to sensing incident light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.