Setting black levels in organic EL display devices

Details Setting black levels in organic EL display devices Setting black levels in organic EL display devices

2007-01-16

2007-01-16

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S077000, C315S169300

Reexamination Certificate

active

10767288

ABSTRACT:
To appropriately adjust luminance and a black level even when characteristics of an organic EL display element should be changed due to an environmental change or heat self-generation, to display a stable image. A current detector detects a level of a total panel current flowing in an organic EL panel. The detected level is subjected to A/D conversion before being supplied to an adder. Meanwhile, a video signal is supplied to a current calculator24to be converted into data corresponding to the level of a total panel current, before being supplied to the adder. The adder then compares an average total panel current level, estimated based on a video signal, and an actual total panel current level, to obtain a difference so that a black level for image data to be supplied to the panel is adjusted according to the difference.

REFERENCES:
patent: 6667580 (2003-12-01), Kim et al.
patent: 6690117 (2004-02-01), Komiya
patent: 2005/0083268 (2005-04-01), Mori et al.
patent: 2002-251167 (2002-09-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3802033