Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Reexamination Certificate
2007-06-26
2007-06-26
Shalwala, Bipin (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
C345S076000, C345S077000, C345S090000, C345S204000, C315S169300
Reexamination Certificate
active
10321656
ABSTRACT:
In a display device in accordance with the present invention, each pixel includes a plurality of luminescent elements having different luminous intensities to represent gray scales by controlling the turning ON/OFF of the luminescent elements. A digital signal is transmitted to each pixel to carry out control by thin film transistors connected in series with the luminescent elements. The luminous intensities of the luminescent elements are the geometric progressions of a common ratio of 2. The ON resistance of the thin film transistors is set to be lower than the ON resistance of the luminescent elements, while the OFF resistance of the thin film transistors is set to be higher than the OFF resistance of the luminescent elements. These features have reduced the nonuniformity in the luminous intensities of the luminescent elements caused by the nonuniformity in the conductance of the transistors, thus achieving improved image quality.
REFERENCES:
patent: 3807037 (1974-04-01), Fischer
patent: 5027040 (1991-06-01), Ikeda et al.
patent: 5072262 (1991-12-01), Uekita et al.
patent: 5126214 (1992-06-01), Tokailin et al.
patent: 5302966 (1994-04-01), Stewart
patent: 5448258 (1995-09-01), Edwards
patent: 5543819 (1996-08-01), Farwell et al.
patent: 5548305 (1996-08-01), Rupel
patent: 5652600 (1997-07-01), Khormaei et al.
patent: 5682052 (1997-10-01), Hodges et al.
patent: 5684365 (1997-11-01), Tang et al.
patent: 5702833 (1997-12-01), Nagai et al.
patent: 5754064 (1998-05-01), Chien
patent: 5786796 (1998-07-01), Takayama et al.
patent: 5821913 (1998-10-01), Mamiya
patent: 5895692 (1999-04-01), Shirasaki et al.
patent: 5940053 (1999-08-01), Ikeda
patent: 6057647 (2000-05-01), Kurosawa et al.
patent: 6114183 (2000-09-01), Hamada et al.
patent: 6140980 (2000-10-01), Spitzer
patent: 6518941 (2003-02-01), Kimura
patent: 2004/0113872 (2004-06-01), Nanno et al.
patent: 0 653 741 (1995-05-01), None
patent: 0 762 374 (1997-03-01), None
patent: 2 582 431 (1986-11-01), None
patent: 56-88193 (1981-07-01), None
patent: A-56-88193 (1981-07-01), None
patent: A-58-220185 (1983-12-01), None
patent: 61-022326 (1986-01-01), None
patent: A-61-22326 (1986-01-01), None
patent: A-6-325869 (1994-11-01), None
patent: A-7-235378 (1995-09-01), None
patent: A-8-54835 (1996-02-01), None
patent: A-8-241057 (1996-09-01), None
patent: A-9-153624 (1997-06-01), None
“Half-Tone Methods for Passive-Matrix-Addressed Displays: LCD and Actfel”, IBM Technical Disclosure Bulletin, US, IBM Corp., vol. 33, No. 8, Jan. 1991, pp. 411-413.
“Circuitry to Address Field Effect Electroluminescent Panel”, IBM Technical Disclosure Dulletin, US, IMB Corp., vol. 13, No. 4, Sep. 1970, pp. 967-968.
“MOS-EL Integrated Display Device”, SID International Sympsium, US, Coral Gables, Winner, Vo. SYMP, May 13, 1982, pp. 266-267.
“Active Matrix CDSE TFT Addressed Electroluminescent Displays”, International Display Research Conference, US, New York, IEEE, Oct. 1988, pp. 74-99.
Kovalick Vincent E.
Oliff & Berridg,e PLC
Seiko Epson Corporation
Shalwala Bipin
LandOfFree
Display device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3839768