Display device and optical touch system including the same
US9304626B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2013 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Nov 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/03542
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An optical touch system includes: a coordinate processor; a display device; and an optical element. The optical element is configured to emit light towards the display device and provide information about reflected light corresponding to a portion of the emitted light to the coordinate processor. The display device includes: a display panel configured to display an image, a touch substrate disposed on the display panel, the touch substrate including optical recesses each configured to reflect respectively different amounts of incident light, and a protective layer disposed on the touch substrate. The coordinate processor is configured to determine a touch or near-touch coordinate based on the information received from the optical element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.