Liquid crystal display device
US9236004B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2012 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jan 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2320/028
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a liquid crystal display device adopting a time-division scheme to improve viewing angle characteristics, the occurrence of horizontal lines on a screen is suppressed. When first output gray scales are obtained for one-line data, the sum total of differences between “source voltages for a horizontal scanning period immediately before a horizontal scanning period during which a processing target line is placed in a selected state” and “source voltages determined based on the first output gray scales obtained by a gray scale value obtaining unit” for all source bus lines is determined (step S110). Then, based on the amount of CS ripple corresponding to the sum total determined at step S110, correction addition/subtraction values are obtained from a polarity-by-polarity background look-up table, for the respective picture elements included in the processing target line (step S120). Then, second output gray scales are determined in an addition/subtraction process of the first output gray scales and the correction addition/subtraction values (step S130).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.