Display device
US9335854B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2010 |
| Grant date | May 10, 2016 |
| Priority date | — |
| Expiry date | Jul 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/148
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A plurality of first sensor pixel circuits each sensing light during a sensing period when a backlight is turned on and retaining the amount of sensed light otherwise in accordance with a clock signal and a plurality of second sensor pixel circuits each sensing light during a sensing period when the backlight is turned off and retaining the amount of sensed light otherwise in accordance with a clock signal are arranged in a pixel region. The sensor pixel circuits of two types are connected to different output lines, so that a difference between two output signals is obtained at the outside of the sensor pixel circuit. The sensor pixel circuits described above are used for detecting a difference between an amount of light to be incident when the backlight is turned on and an amount of light to be incident when the backlight is turned off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.