Display device having display and imaging pixels sandwiched between same substrates
US6040810A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 7, 1997 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Jan 7, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H29/142
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a picture telephone, an apparatus is provided which images the face of an operator in a natural manner for a conversation, with an eye height at which the operator looks at an image expressing a partner of the conversation. A number of photodiodes are disposed each adjacent to each pixel electrode, on surfaces facing each other of a pair of substrates between which a liquid crystal of a transmission type active matrix liquid crystal display apparatus is interposed. Outputs from the respective photodiodes are read out by a so-called inter-line transmission method which utilizes a scanning function of a CCD (charge coupled device).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.