Display apparatus
US8587755B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2008 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Jun 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D86/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A liquid crystal display apparatus having little influence of noise and able to improve an SN ratio of a light reception system without requiring a calibration operation when turning on the power, is provided. The apparatus has a plurality of display cells 21 having display circuits 210, light receiving cells 22 each including a light receiving element 221, a reference cell 23 having a configuration equivalent to the configuration of the light receiving cell and blocked from incidence of a light upon the light receiving element 221, and a received light signal processing circuit 6 performing differential signal processing of an output signal of the light receiving cell 22 and an output signal of the reference cell 23 and deleting noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.