Title:
METHOD OF DRIVING DISPLAYS COMPRISING A CONVERSION FROM THE RGB COLOUR SPACE TO THE RGBW COLOUR SPACE
Document Type and Number:
WIPO Patent Application WO2006077554
Kind Code:
A3
Abstract:
An apparatus (200) for driving a display (310, 320) including an array of display elements (20), each element (20) comprising a plurality of sub-pixels of red (R), green (G), blue (B) and white (W) colors. The apparatus (200) comprising a processor (300) operable: (a) to receive input signals (RI, GI, BI) for controlling red, green and blue colors of each element (20) of the display (320); (b) to process the input signals (RI, GI, BI) to generate corresponding red, green, blue and white output drive signals for the red (R), green (G), blue (B) and white (W) sub- pixels of each element (20), said output drive signals being enhanced according to a gain factor (HS) for increasing element luminosity subject to potential color saturation occurring at one or more of the elements (20) being addressed by selectively reducing color saturation at said one or more of said elements (20); and (c) to apply said output drive signals to respective sub-pixels (R; G, B, W) for each element (20) of the display (320).
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Inventors:
VAN MOURIK JOHANNES G R (NL)
STESSEN JEROEN H C J (NL)
STESSEN JEROEN H C J (NL)
Application Number:
PCT/IB2006/050209
Publication Date:
October 05, 2006
Filing Date:
January 19, 2006
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
VAN MOURIK JOHANNES G R (NL)
STESSEN JEROEN H C J (NL)
VAN MOURIK JOHANNES G R (NL)
STESSEN JEROEN H C J (NL)
International Classes:
G09G5/02; G09G3/20
Domestic Patent References:
| WO2001037251A1 | 2001-05-25 |
Foreign References:
| US20040223005A1 | 2004-11-11 | |||
| US20040046725A1 | 2004-03-11 | |||
| US20040251821A1 | 2004-12-16 |
Other References:
BAEK-WOON LEE 1 ET AL: "9.2: Implementation of RGBW Color System in TFT-LCDs", 2004 SID INTERNATIONAL SYMPOSIUM. SEATTLE, WA, MAY 25 - 27, 2004, SID INTERNATIONAL SYMPOSIUM, SAN JOSE, CA : SID, US, 25 May 2004 (2004-05-25), pages 111 - 113, XP007011810
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