Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1997-01-28
1999-10-26
Wong, Don
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
3151693, 3151694, 345 55, 345 76, G09G 328
Patent
active
059734566
ABSTRACT:
To eliminate uneven luminance between columns, and along with this, to eliminate uneven luminance also among EL elements in several columns in an EL display device for performing matrix display, in a matrix type EL display device in which a scan voltage is sequentially applied to scan electrodes and EL elements are caused to electroluminesce by this scan voltage and a data voltage, a pulse width of the scan voltage is kept uniform, and together with this, a charging period for the EL elements is varied in accordance with a number of light emitting pixels in a line scanned and driven to eliminate uneven luminance between columns. Additionally, a holding period for holding a charging voltage is provided to alleviate differences in terminal voltages among the EL elements due to wiring resistance delay and to eliminate uneven luminance among the EL elements.
REFERENCES:
patent: 3566014 (1971-02-01), Norem
patent: 3601532 (1971-08-01), Bitzer
patent: 3674928 (1972-07-01), Yoshiyama et al.
patent: 4686426 (1987-08-01), Fujioka et al.
patent: 4859910 (1989-08-01), Iwakawa et al.
patent: 4951041 (1990-08-01), Inada et al.
patent: 4983885 (1991-01-01), Fujioka et al.
patent: 5075596 (1991-12-01), Young et al.
patent: 5231382 (1993-07-01), Tanaka
patent: 5739641 (1998-04-01), Nakamura et al.
NEC Data Sheet "MOS Integrated Circuit .mu. PD16302".
Hattori Tadashi
Kishita Hiroyuki
Nishioka Ken
Osada Masahiko
Denso Corporation
Lee Wilson
Wong Don
LandOfFree
Electroluminescent display device having uniform display element 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 device having uniform display element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electroluminescent display device having uniform display element will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-768373