Electroluminescent display devices

Details Electroluminescent display devices Electroluminescent display devices

2004-03-26

2009-10-13

Eisen, Alexander (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Light detection means

C345S076000, C345S081000, C345S082000, C345S080000, C345S084000, C345S092000, C315S169100, C315S169300

Reexamination Certificate

active

07602387

ABSTRACT:
In an active matrix electroluminescent display device a storage capacitor (24) is provided in each pixel for storing a voltage to be used for addressing a drive transistor (22) which controls the illumination of the electroluminescent display element (20). A discharge photosensitive element (34) is provided for discharging the charge storage capacitor in dependence on the display element's light output. A further photosensitive element (40) is provided so as to cancel photocurrents produced in the discharge photosensitive element (34) as a result of light input to the discharge photosensitive element other than from the pixel's display element (20), the further photosensitive element being shielded (44) from light emitted by the display element while being exposed to light from other directions. Irregularities in the display output due to the effects of the unwanted light inputs to the discharge photosensitive elements are then avoided.

REFERENCES:
patent: 4760389 (1988-07-01), Aoki et al.
patent: 5838308 (1998-11-01), Knapp et al.
patent: 6320325 (2001-11-01), Cok et al.
patent: 6441560 (2002-08-01), Hunter
patent: 6489631 (2002-12-01), Young et al.
patent: 2001/0035848 (2001-11-01), Johnson et al.
patent: 2001/0055008 (2001-12-01), Young et al.
patent: 2004/0017162 (2004-01-01), Sato et al.
patent: 0717446 (1996-06-01), None
patent: 0717446 (1999-06-01), None
patent: 1096466 (2001-05-01), None
patent: 1194013 (2002-04-01), None
patent: 9953472 (1999-10-01), None
patent: 0120591 (2001-03-01), None
patent: 0169520 (2001-09-01), None
patent: 0169520 (2001-09-01), None
patent: 0226905 (2002-04-01), None
patent: 2004023444 (2004-03-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4136771