COLOR FLAT PANEL DISPLAY SUB-PIXEL RENDERING AND DRIVER CONFIGURATION FOR SUB-PIXEL ARRANGEMENTS WITH SPLIT SUB-PIXELS

• US 20070064020A1
• Filed: 08/30/2006
• Published: 03/22/2007
• Est. Priority Date: 01/07/2002
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Clairvoyante, Inc. (Samsung Group)
• Inventors: Credelle, Thomas, Brown Elliott, Candice
• Granted Patent: US 7,755,652 B2
• Time in Patent Office: Days
• US Class Current: 345/694
• CPC Class Codes: G02F 1/134345 Subdivided pixels, e.g. for grey scale or redundancy
• CPC Class Codes: G02F 2201/52 RGB geometrical arrangements
• CPC Class Codes: G09G 2300/0452 Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
• CPC Class Codes: G09G 2340/0457 Improvement of perceived resolution by subpixel rendering
• CPC Class Codes: G09G 3/2003 Display of colours specific for liquid crystal displays G09G3/3607
• 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
• CPC Class Codes: G09G 3/3614 Control of polarity reversal in general

Abstract

Various embodiments of a sub-pixel repeating group are disclosed. In one embodiment, an octal subpixel repeating group may comprise three-color (red, green and blue) sub-pixels with blue colored subpixel comprising twice the number of positions within the octal sub-pixel grouping as the red and green colored sub-pixels. In another embodiment, a subpixel repeating group comprises two rows of eight “split” subpixels comprising three primary colors and a non-saturated neutral, or white, subpixel functioning as a primary color.

Claims

1. A display device comprising

a display panel comprising a plurality of a sub-pixel repeating group;

said sub-pixel repeating group comprising sixteen sub-pixels;

each sub-pixel having one of at least four primary colors, wherein one of the primary colors is a non-saturated, neutral color;

a source image data receiving unit configured to receive source image data indicating an image, for rendering on said display panel; and

a sub-pixel rendering unit configured to compute luminance values for each subpixel of said display panel using the source image data.

2. The display device of claim 1 wherein each sub-pixel that is not sub-pixel having a non-saturated neutral color is one of a red color sub-pixel, a green color sub-pixel and a blue color sub-pixel.

3. The display of claim 1 wherein said non-saturated neutral color is white.

4. The display of claim 1 wherein said sub-pixel rendering unit uses an implied sample area of the input image and locations of said sub-pixels on said display panel to determine a resample area from which to compute said luminance values.

5. The display of claim 1 wherein said display panel further includes a plurality of column drivers for sending signals to said sub-pixels to produce said luminance values;

said column drivers being configured such that a column driver providing a signal via a column line to a first occurrence of a sub-pixel having a first one of the primary colors includes a crossover column line connected to a second occurrence of the sub-pixel having the first one of the primary colors.