Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Plural circuit elements
Patent
1976-10-29
1978-07-25
La Roche, Eugene R.
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Plural circuit elements
313497, 313513, 315 58, 315169R, 315325, H05B 4136
Patent
active
041032080
ABSTRACT:
In one preferred form of calculators, a multi-digit fluorescent display tube and an LSI semiconductor chip together are disposed on a printed circuit flexible film. More particularly, individual components of the multi-digit fluorescent display tube (that is, segmented anode electrodes, grid or accelerator electrodes and a directly heated type filament) and the LSI semiconductor chip are housed within a common package which in turn is disposed directly on the printed circuit flexible film. Connection between the fluorescent display tube and the LSI chip is accomplished by conductor leaves carried on the printed circuit flexible film. In addition, the printed circuit flexible film carries a plurality of stationary key contacts which constitute the keyboard of the calculators.
REFERENCES:
patent: 3800178 (1974-03-01), Farina
patent: 3842313 (1974-10-01), Van Daelen et al.
patent: 4004186 (1977-01-01), Bylander
La Roche Eugene R.
Sharp Kabushiki Kaisha
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