Active matrix vacuum fluorescent display with microprocessor int

Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device

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Details

3151693, 3151694, G09G 310

Patent

active

054732220

ABSTRACT:
A glass envelope contains a silicon substrate which embodies an active matrix anode array, a microprocessor, and anode driving circuits. A small number of pins on the envelope couple display parameters and control signals to the microprocessor, and logic and anode signal voltages are supplied to the substrate. The microprocessor determines which pixels in the anode array should be energized and the driving circuit addresses the array and applies energizing voltage to the selected pixels. The driving circuit is supplied by the low signal voltage and includes a voltage level shifting function to increase the level by an order of magnitude to realize a voltage high enough for adequate display brightness. The display can be made small due to the small number of pins required.

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"High-Resolution VFD On-a-Chip", Masahiro Yoshimura, Katsumasa Fujii, Schin'ichi Tanka, 1986 SID International Symposium, Digest of Technical Papers, First Edition, pp. 403-406.
"MOS-Addressed VFD Character Display Incorporating Static RAM," Masahiro Yoshimura, Katsumasa Fujii, and Schin'ichi Tanaka, Sashiro Uemura, Makoto Horie, 1985 SID International Symposium, Digest of Technical Papers, pp. 362-365, 1985.

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