Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1988-07-08
1990-04-03
Safourek, Benedict V.
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
340781, 34082581, G09G 310
Patent
active
049143530
ABSTRACT:
The preferred embodiment discloses a new thin-film EL display panel drive circuit using EL layers installed between the scan-side electrodes and the data-side electrodes aligned so as to allow them to cross one another, comprising: scan-side electrodes connected to the drain terminal of the N-ch high-voltage resistant driver having a grounded source terminal and also connected to the other drain terminal of the P-ch high-voltage resistant driver having a source terminal connected to the pull-up charge drive circuit and to the write drive circuit via the scan-side common bus line; and data-side electrodes connected to the drain terminal of the N-ch high-voltage resistant driver having a grounded source terminal and also having the anode common terminal connected to the cathode terminal of the diode array connected to the preliminary charge drive circuit via the data-side common bus line. By grounding the source terminal to the scan-side N-ch MOS ICs, some of the floating-output logic-circuit driving power sources and some of the logic signal transmission photo-couplers can be eliminated. This not only saves component elements conventionally needed for the P-N symmetric EL display panel drive circuits, but also securely suppresses noise interference, thus offering an indispensable technique giving an early and overall improvement over those thin-film EL display drive circuits thus far made available.
REFERENCES:
patent: 3885196 (1975-05-01), Fischer
patent: 4032818 (1977-06-01), Chan
patent: 4338598 (1982-07-01), Ohba et al.
patent: 4485379 (1984-11-01), Kinoshita et al.
Harada Shigeyuki
Kanatani Yoshiharu
Ohba Toshihiro
Uede Hisashi
Safourek Benedict V.
Salindong T.
Sharp Kabushiki Kaisha
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