DC offset correction for an electroluminescent panel

Details DC offset correction for an electroluminescent panel DC offset correction for an electroluminescent panel

2006-09-14

2011-10-04

Lao, Lun-Yi (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S082000, C345S204000, C315S169300

Reexamination Certificate

active

08031142

ABSTRACT:
A circuit for EL panel DC offset correction is provided. The circuit includes components such as an EL panel driver, an error circuit, a pulse width modulation circuit, and a low-pass filter. The low-pass filter performs low-pass filtering on the voltage across the EL panel to provide a low-pass filter output signal. Further, the error circuit receives the low-pass filter output signal and a reference signal, and provides an error signal. The DC bias across the EL panel is adjusted based, at least in part, on the error signal. In this way, DC offset correction is provided based on the negative feedback.

REFERENCES:
patent: 4769753 (1988-09-01), Knudson et al.
patent: 4959557 (1990-09-01), Miller
patent: 7259627 (2007-08-01), Dhanasekaran et al.
patent: 2005/0057231 (2005-03-01), Morita
patent: 2007/0210996 (2007-09-01), Mizukoshi et al.
Patangia et al.: “A Multi-Level Inverter for Driving a High Voltage Display,” University of Arkansas, Donaghey College of Information Science and Systems Engineering, IEEE, 2005, pp. 4461-4464.
Shih et al.: “Offset of the electrical characteristics of alternating-current thin-film electroluminescent devices,” Appl. Phys. Lett. 69 (13), American Institute of Physics, Sep. 1996, pp. 1921-1923.
“HV803, HV8051, and HV8053 EL Lamp Driver Circuits,” HV8XX Series Application Note AN-H33, Supertex Inc., 2001, pp. 1-12.
“Basics of EL Panel Drive Techniques,” HVMOS Application Note AN-H3, Supertex Inc., 2001, pp. 1-3.

Affiliated with

Also associated with

Rating

DC offset correction for an electroluminescent panel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with DC offset correction for an electroluminescent panel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DC offset correction for an electroluminescent panel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4282538