COLOR CORRECTION LIQUID CRYSTAL DISPLAY AND METHOD OF DRIVING SAME

• US 20100309234A1
• Filed: 06/25/2010
• Published: 12/09/2010
• Est. Priority Date: 07/10/2001
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Kim, Jong-Seon, Kwon, Su-Hyun, Lee, Seung-Woo
• Granted Patent: US 8,823,618 B2
• Time in Patent Office: Days
• US Class Current: 345/690
• CPC Class Codes: G09G 2320/0276 for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
• CPC Class Codes: G09G 3/2055 the pattern being varied in time
• CPC Class Codes: G09G 3/3607 for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127

Abstract

A liquid crystal display includes a liquid crystal display panel for displaying picture images, and a color correction unit. Upon receipt of raw RGB picture data corresponding to raw RGB gamma curves, the color correction unit generates corrected RGB picture data based on values over a predetermined imaginative gamma curve established in accordance with the characteristic of the liquid crystal display panel. The color correction unit stores values over corrected RGB gamma curves corresponding to the corrected picture data, and gamma-corrects the raw RGB picture data based on values over the stored corrected RGB gamma curves, thereby displaying the picture images.

Claims

1. A liquid crystal display having a first gamma curve and a second gamma curve representing a first color and a second color respectively, comprising:

a liquid crystal display panel for displaying picture images; and

a color correction unit;

wherein the color correction unit transforms a first input picture data having a first gray value into a first output picture data having a second gray value, a luminance value corresponding to the first input picture data on the first gamma curve is the same as a luminance value corresponding to the first output picture data on the second gamma curve.