Active matrix type display device

Details Active matrix type display device Active matrix type display device

2006-03-10

2009-11-24

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S076000

Reexamination Certificate

active

07623102

ABSTRACT:
A variation in a display image and duration of a residual image are reduced to improve quality of display of an active matrix type display device. A control circuit sequentially outputs a pre-charge pulse signal PCG1and a storage capacitor control pulse signal SC1in synchronization with a falling edge of a vertical start pulse signal STV. A pre-charge TFT in a pixel in a first row is turned on according to the pre-charge pulse signal PCG1. As a result, a source and a gate of a driver TFT are short-circuited, both an electric potential at the gate and an electric potential at the source of the driver TFT become a positive power supply electric potential PVdd, and the driver TFT is turned off. After that, the storage capacitor control pulse signal SC1rises to a high level, and the electric potential at the gate of the driver transistor is raised by capacitive coupling. With this, electric characteristics of the driver TFT are initialized.

REFERENCES:
patent: 5828368 (1998-10-01), Jung
patent: 7167169 (2007-01-01), Libsch et al.
patent: 7230591 (2007-06-01), Inukai
patent: 2001/0007447 (2001-07-01), Tanaka et al.
patent: 2002/0140645 (2002-10-01), Sato et al.
patent: 2002/0180671 (2002-12-01), Inukai
patent: 2003/0090447 (2003-05-01), Kimura
patent: 2003/0173904 (2003-09-01), LeChevalier
patent: 2004/0026723 (2004-02-01), Miyazawa
patent: 2004/0113872 (2004-06-01), Nanno et al.
patent: 2004/0179005 (2004-09-01), Jo
patent: 2004/0252084 (2004-12-01), Miyagawa et al.
patent: 2005/0068270 (2005-03-01), Awakura et al.
patent: 2005/0078065 (2005-04-01), Hayafuji et al.
patent: 2005/0156921 (2005-07-01), Nguyen
patent: 2006/0001616 (2006-01-01), Chang
patent: 2006/0139254 (2006-06-01), Hayakawa et al.
patent: 2006/0145960 (2006-07-01), Koga et al.
patent: 2006/0208976 (2006-09-01), Ikeda
patent: 2006/0226788 (2006-10-01), Ogawa
patent: 2002-175035 (2002-06-01), None
patent: 2004-341435 (2004-12-01), None

Affiliated with

Also associated with

Rating

Active matrix type 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 Active matrix type display device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active matrix type display device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4125867