Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Patent
1982-12-28
1985-07-09
Chatmon, Saxfield
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
34082581, 34082591, 313505, 315 51, 3151693, 357 231, H05B 3700, H05B 3900, H05B 4100
Patent
active
045284806
ABSTRACT:
The AC drive type electroluminescent display device comprises a combination of an electroluminescent element, a transistor for driving the electroluminescent element, a source of alternating current, a switching transistor ON/OFF--controlling the first mentioned transistor, and a capacitor. The transistor for driving the electroluminescent element comprises a channel region of a first conductivity type and made of polycrystalline silicon with its grain size increased, first and second impurity diffused layers on the opposite sides of the channel region and a gate electrode overlying a predetermined portion of the channel region via a gate insulating film. The gate electrode is made of polycrystalline silicon diffused with an impurity of a second conductivity type. Offset gate regions are formed between the gate electrode and the first and second impurity diffused layers respectively.
REFERENCES:
patent: 3909306 (1975-09-01), Sakamoto et al.
patent: 4006383 (1977-02-01), Luo et al.
patent: 4042854 (1977-08-01), Luo et al.
patent: 4087792 (1978-05-01), Asars
patent: 4344080 (1982-08-01), Tihanyi
patent: 4394674 (1983-07-01), Sakuma et al.
"Thin-Film-Transistor Switching Matrix for Flat-Panel Displays" by G. Kramer; IEEE Transaction on Electron Devices, vol. ED-22, No. 9, pp. 733-739, Sep. 1975.
"A 6.times.6-in 20-lpi Electroluminescent Display Panel" by T. P. Brody et al., IEEE Transactions on Electron Devices, vol. ED-22, No. 9, Sep. 1975.
Tsujiyama Bunjiro
Unagami Takashi
Chatmon Saxfield
Nippon Telegraph & Telephone
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