Optical touch display device
US8508509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2010 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jun 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical touch device includes a display panel and at least a light emitting and receiving unit. The display panel includes a transparent substrate having a touch surface and a plurality of side surfaces adjacent to the touch surface. At least one of the side surfaces is a first light incidence surface and at least one of the side surfaces is a first light emitting surface. Each light emitting and receiving unit includes a linear light source and a light sensing component. The linear light source is disposed beside the first light incidence surface and is configured for providing optical signals into the transparent substrate. The light sensing component is disposed beside the first light emitting surface. The light sensing component is configured for receiving the optical signals from the linear light source. The optical touch display device has advantages of low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.