Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2007-04-12
2010-10-05
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S207000, C349S061000, C349S062000, C349S063000, C349S064000, C349S065000, C349S066000, C349S067000, C349S068000, C349S069000, C349S070000, C349S071000
Reexamination Certificate
active
07808475
ABSTRACT:
Backlight support is provided for flat panel displays through use of phospho-luminescent materials. Photo-luminescent materials are integrated into a flat panel display such as an LCD display as a back panel substrate or by embedding in display pixels. When ambient light levels exceed a predetermined threshold the material is activated allowing a reduction in active backlight power. The active backlight may be provided by an electrically supported system such as an ELP, a light pipe, an LED, etc. By reducing the power of the active backlight in an analog manner or through decreasing the duty cycle, an overall power savings is accomplished for the display. By embedding different photo-luminescent materials that operate at different wavelengths, color display may be enhanced while reducing power consumption. Display properties, such as transparency, contrast, etc., may be adjusted to affect phospho-luminescent backlight support.
REFERENCES:
patent: 3270201 (1966-08-01), Hardesty
patent: 4453434 (1984-06-01), Lissy
patent: 5594570 (1997-01-01), Hirata et al.
patent: 6364498 (2002-04-01), Burbank
patent: 6626552 (2003-09-01), Uehara et al.
patent: 6894750 (2005-05-01), Zhuang et al.
patent: 7015893 (2006-03-01), Li et al.
patent: 7019714 (2006-03-01), Uchida et al.
patent: 7248244 (2007-07-01), Akiyama
patent: 7453434 (2008-11-01), Takahashi et al.
patent: 2002/0063519 (2002-05-01), Rikkinen et al.
patent: 2004/0100432 (2004-05-01), Hajto et al.
patent: 2004/0104885 (2004-06-01), Adler
patent: 2004/0263045 (2004-12-01), Smith
patent: 2005/0023972 (2005-02-01), Lewandowski et al.
patent: 2006/0262111 (2006-11-01), Kerofsky
patent: 2006/0280969 (2006-12-01), Seo et al.
patent: 2007/0070264 (2007-03-01), Fujita et al.
patent: 1731949 (2006-12-01), None
patent: WO 2006 045424 (2006-05-01), None
Energy-Adaptive Display System Designs for Future Mobile Environments http://www.hpl.hp.com/techreports/2003/HPL-2003-91.pdf.
Liquid Crystal Modulated Photoluminescent Displays (PL-LCSs) http://www-g.eng.cam.ac.uk/photonics/sid97.pdf.
Hjerpe Richard
Merchant & Gould P.C.
Microsoft Corporation
Steinberg Jeffrey S
LandOfFree
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