Patent · US Active

Display apparatus

US8587755B2 · kind B2 · utility

8Cited by
3References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMar 14, 2008
Grant dateNov 19, 2013
Priority date
Expiry dateJun 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.