Display driving circuit and display device using the same

Details Display driving circuit and display device using the same Display driving circuit and display device using the same

2004-08-04

2008-12-30

Nguyen, Kevin M (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S082000, C345S098000

Reexamination Certificate

active

07471268

ABSTRACT:
An object of the present invention is to provide a display device for making it possible to accurately adjust a gradation current even if there is a variation in characteristics of a transistor for driving an organic EL element in a display device using an organic EL element. The following are included: a current detecting circuit for detecting a current circulating through a light emitting element, a current adjustment control circuit for comparing the detected current value with a reference current value and adjusting a current to be supplied to the light emitting element of a display portion in accordance with the comparison result, and a reference current circuit for generating a reference current correspondingly to the adjusted current. Moreover, a reference current circuit is formed on the substrate same as the substrate on which a light emitting element of a display portion is formed. Thereby, the variation of transistor devices constituting the reference current circuit is corrected and the reference current can be adjusted at a high accuracy.

REFERENCES:
patent: 5656892 (1997-08-01), Zimlich et al.
patent: 6091397 (2000-07-01), Lee
patent: 6989844 (2006-01-01), Kageyama et al.
patent: 7253813 (2007-08-01), Yamada
patent: 2002/0125831 (2002-09-01), Inukai et al.
patent: 1369916 (2002-09-01), None
patent: 2001-324955 (2001-11-01), None
patent: 2002-229513 (2002-08-01), None
K. Abe et al., “16-1: A Poly-Si TFT 6-bit Current Data Driver for Active Matrix Organic Light Emitting Diode Displays”, Euro Display 2002, pp. 279-282.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4023293