Liquid crystal display using backlight intensity to compensate for pixel damage
US9311860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2013 |
| Grant date | Apr 12, 2016 |
| Priority date | — |
| Expiry date | Mar 27, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer program product (CPP) for controlling a liquid crystal display (LCD) includes code for applying a test voltage to each liquid crystal element (LCE) disposed in an addressable array forming the LCD, and code for detecting an amount of light received by photosensors while applying the test voltage to the LCEs, wherein each photosensor is aligned behind and logically associated with one of the LCEs. The CPP further includes code for applying selected voltage levels to each LCE to display an image, and code for controlling an amount of backlight produced by backlighting elements in an addressable array while the image is displayed. Each backlighting element is aligned behind and logically associated with one LCE, and at least one backlighting element is controlled to compensate for a difference between the amount of light detected by the photosensor logically associated with at least one LCE and the other photosensors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.