Active matrix display devices

Details Active matrix display devices Active matrix display devices

2003-09-12

2009-12-15

Mengistu, Amare (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S204000, C349S139000

Reexamination Certificate

active

07633472

ABSTRACT:
In an active matrix display device, such as AMLCD, having an array of pixels (P) addressed via sets of row and column conductors (14, 15) to which, respectively, selection and data signals are applied, each pixel comprises a plurality of sub pixels (P1-P4) which each have an associated switch, for example a TFT, (T1-T4) and which are addressed with data signals through a common switch (T1) coupled to a column conductor (15). Addressing the sub pixels through a common switch reduces the effective capacitance of the column conductor. By appropriate control of the switches (T1-T4) the pixels can be driven in a first mode in which the common switch (T1) is operated to control the simultaneous addressing of the sub pixels (P1-P4) with a data signal, for example, for a video display with full grey scale capability, and in a second mode in which the switches (T1-T4) are controlled sequentially to allow different data signals to be applied to the individual sub pixels, for example, as required for a low power standby mode of operation with limited grey scale and color capability.

REFERENCES:
patent: 5448258 (1995-09-01), Edwards
patent: 5923311 (1999-07-01), Edwards
patent: 5977940 (1999-11-01), Akiyama et al.
patent: 6075505 (2000-06-01), Shiba et al.
patent: 6738031 (2004-05-01), Young et al.
patent: 6795050 (2004-09-01), Ino et al.
patent: 7173612 (2007-02-01), Nanno et al.
patent: 7230597 (2007-06-01), Edwards et al.
patent: 2001/0052597 (2001-12-01), Young et al.
patent: 2002/0018056 (2002-02-01), Ozawa et al.
patent: 2002/0044109 (2002-04-01), Kimura
patent: 2002/0047822 (2002-04-01), Senda et al.
patent: 2002/0075211 (2002-06-01), Nakamura
patent: 2002/0113872 (2002-08-01), Kinjo
patent: 2002/0140364 (2002-10-01), Inukai
patent: 2004/0113872 (2004-06-01), Nanno et al.
patent: 0 597 536 (1994-05-01), None
patent: 0 293 048 (1998-11-01), None
patent: 1 158 482 (2001-11-01), None
patent: 3053218 (1991-03-01), None
patent: 5265045 (1993-10-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4149397