Optical plate structure for a touch panel, and touch display panel and touch liquid crystal display panel including the same
US8773372B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2010 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Mar 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical plate structure for a touch panel includes an optical plate, at least a light source, and at least an optical camera. A light-emitting surface of the optical plate includes a plurality of micro-structure. The light source is disposed beside a vertical side of the optical plate and emits a first light entering the optical plate. The optical plate guides the first light and emits a second light from the light-emitting surface. The optical camera is disposed beside the optical plate or in a corner of the optical plate and above the light-emitting surface, for detecting a third light incident on the light camera. The second light is reflected by an object touching the optical plate to become the third light. The optical plate structure for a touch panel may be utilized in a touch display panel or a touch liquid crystal display panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.