Driving circuit of driving light-emitting device

Details Driving circuit of driving light-emitting device Driving circuit of driving light-emitting device

2011-03-08

2011-03-08

Vo, Tuyet Thi (Department: 2821)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

C327S538000, C327S530000, C327S540000, C327S534000

Reexamination Certificate

active

07902906

ABSTRACT:
A light-emitting device driving circuit capable of reliably performing emission control on a light-emitting device of a low emission threshold (about 10 mA or less) and capable of correcting a distortion due to the Early effect of a transistor in the drive current supplied to the light emitting device. The light limiting device driving circuit includes a current control unit (101) which controls the value of a main current based on a control voltage, a bias current source (CC1) for subtracting a bias current from the main current, and a switching unit (103) which controls emission of light from the light-emitting device by switching, based on the drive signal, a current obtained by subtracting the bias current from the main current or a current based on the current obtained by the subtraction.

REFERENCES:
patent: 5006732 (1991-04-01), Nakamura
patent: 6078150 (2000-06-01), Koyanagi et al.
patent: 6516015 (2003-02-01), Kimura
patent: 6670773 (2003-12-01), Nakamura et al.
patent: 6870553 (2005-03-01), Kondo et al.
patent: 6992663 (2006-01-01), Nakamura et al.
patent: 2000-216486 (2000-08-01), None
patent: 2003-198047 (2003-07-01), None
U.S. Appl. No. 11/961,682, filed Dec. 20, 2007, Applicant Hiroyuki Nakamura.

Affiliated with

Also associated with

Rating

Driving circuit of driving light-emitting 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 Driving circuit of driving light-emitting device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driving circuit of driving light-emitting device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2717852