Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1992-12-23
1995-05-16
Oberley, Alvin E.
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345 4, 345 45, 345209, 313506, G09G 328
Patent
active
054164940
ABSTRACT:
An EL display includes first and second EL elements each having an EL photoemissive layer and a pair of electrodes provided on opposite surfaces of the EL photoemissive layer. The EL photoemissive layer of each of the first and second EL elements is enabled to emit light when a voltage applied between the electrodes of the EL element is equal to or greater than a given threshold value. A voltage feed circuit serves to apply a first ac voltage between the electrodes of the first EL element. The first ac voltage has a value being equal to or greater than the threshold value. The voltage feed circuit also serves to apply a second ac voltage between the electrodes of the second EL element in cases where photoemission of the second EL element is required. The second ac voltage has a value equal to or greater than the threshold value. The second ac voltage has a phase different from a phase of the first ac voltage. Furthermore, the voltage feed circuit serves to apply a third ac voltage between the electrodes of the second EL element in cases where photoemission of the second EL element is not required. The third ac voltage has a value smaller than the threshold value. The third ac voltage has a phase different from the phase of the first ac voltage.
REFERENCES:
patent: 3556391 (1971-02-01), Lully
patent: 3621332 (1971-11-01), Jun
patent: 4099091 (1978-07-01), Yamazoe et al.
patent: 4253097 (1981-02-01), Hochstrate
patent: 4506193 (1985-03-01), Hope et al.
patent: 4568928 (1986-02-01), Biferno
patent: 4689522 (1987-08-01), Robertson
patent: 4728172 (1988-03-01), Cannella
patent: 4733228 (1988-03-01), Flegal
patent: 4777402 (1988-10-01), Mitsumori
patent: 4982183 (1991-01-01), Flegal et al.
patent: 5053679 (1991-10-01), Thioulouse
Matsumoto Muneaki
Osada Masahiko
Yokota Minoru
Nippondenso Co. Ltd.
Oberley Alvin E.
Saras Steven J.
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