Display device and driving method thereof

Details Display device and driving method thereof Display device and driving method thereof

2007-05-29

2007-05-29

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S036000, C345S076000

Reexamination Certificate

active

10342346

ABSTRACT:
In an active matrix EL display device, a drive mode is switched between constant voltage drive and constant current drive according to display contents. Whether an OLED is driven at constant current or driven at constant voltage is determined according to whether a driving TFT is driven in a saturation region or driven in a linear region. The separation between the saturation region and the linear region is determined according to a voltage applied to the gate of the TFT and a voltage applied to the OLED. By controlling those voltages, the constant voltage drive and the constant current drive can be separately used, thereby allowing a use in which respective advantages of the both drives are utilized.

REFERENCES:
patent: 6169528 (2001-01-01), Oguchi et al.
patent: 6339414 (2002-01-01), Todokoro et al.
patent: 6522315 (2003-02-01), Ozawa et al.
patent: 6531996 (2003-03-01), Murade
patent: 6731266 (2004-05-01), Jung
patent: 6774574 (2004-08-01), Koyama
patent: 6806857 (2004-10-01), Sempel et al.
patent: 6879110 (2005-04-01), Koyama
patent: 6903731 (2005-06-01), Inukai
patent: 2001/0022565 (2001-09-01), Kimura
patent: 2002/0005696 (2002-01-01), Yamazaki et al.
patent: 2002/0024493 (2002-02-01), Ozawa et al.
patent: 2002/0041267 (2002-04-01), Jung
patent: 2002/0097213 (2002-07-01), Ozawa et al.
patent: 2002/0153844 (2002-10-01), Koyama
patent: 2003/0098827 (2003-05-01), Ozawa et al.
patent: 2004/0150591 (2004-08-01), Ozawa et al.
patent: 0-895-219 (1999-02-01), None
patent: 0 984 423 (2000-03-01), None
patent: 1-063-630 (2000-12-01), None
patent: 1-255-240 (2002-11-01), None
patent: 1-336-953 (2003-08-01), None
patent: 1-359-789 (2003-11-01), None
patent: 60-64395 (1985-04-01), None
patent: 5-030351 (1993-02-01), None
patent: 6-301353 (1994-10-01), None
patent: 09-251277 (1997-09-01), None
patent: 11-265162 (1999-09-01), None
patent: 11-329721 (1999-11-01), None
patent: 2000-56727 (2000-02-01), None
patent: 2000-089194 (2000-03-01), None
patent: 2000-221903 (2000-08-01), None
patent: 2000-235370 (2000-08-01), None
patent: 2001-005426 (2001-01-01), None
patent: 2001-343933 (2001-02-01), None
patent: 2001-109421 (2001-04-01), None
patent: 2001-159878 (2001-06-01), None
patent: 2001-188504 (2001-07-01), None
patent: 2001-228831 (2001-08-01), None
patent: 2001-324958 (2001-11-01), None
patent: WO-98-36407 (1998-08-01), None
Notice from the Japanese Patent Office dated Apr. 12, 2005 corresponding to the instant Application.
Notice from Japanese Patent Office dated Apr. 12, 2005 corresponding to instant U.S. Appl. No. 10/342,346.

Affiliated with

Also associated with

Rating

Display device and driving method thereof 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 and driving method thereof, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display device and driving method thereof will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3799060