Backlight device and display apparatus
US8581941B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2010 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | Feb 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/66
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a backlight device wherein when the drive duty and the drive current are controlled according to a motion, the image quality is improved by preventing flicker caused by the change of the drive waveform. A light-emitting unit (121) comprises a plurality of light-emitting areas. A motion amount detecting unit (131) detects the motion amount of an image in each of a plurality of motion areas each corresponding to at least one or more light-emitting areas. A drive condition specifying unit specifies a drive condition including the duty and pulse height value of a drive pulse for causing each of the plurality of light-emitting areas to emit light, on the basis of the detected motion amount. A drive unit drives each of the plurality of light-emitting areas according to the specified drive condition. The drive condition specifying unit adjusts the drive condition such that the drive condition temporally smoothly changes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.