Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1977-07-22
1979-06-19
Anagnos, Larry N.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307 24, 307251, 307270, 340802, 350332, H03K 100, G06F 314
Patent
active
041587863
ABSTRACT:
A voltage dividing circuit provides an intermediate level potential or intermediate level potentials between the maximum and minimum level potentials necessary for dynamic- or scanning-driving a liquid crystal display device. The voltage dividing circuit includes at least one insulated gate field effect transistor and a plurality of resistive elements each with relatively small resistance connected in series between power source terminals. The insulated gate field effect transistor is enabled during a fixed time interval at the initial stage of one display cycle to provide drive voltage to the liquid crystal display device with low output resistance. A first dividing circuit including low resistive elements enabled by an insulated gate field effect transistor or transistors may be connected in parallel with a second dividing circuit including relatively high resistive elements which provides the intermediate level potential or potentials with the same level as of the first dividing circuit.
REFERENCES:
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patent: 3896430 (1975-07-01), Hatsukano
patent: 3903518 (1975-09-01), Hatsukano
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patent: 4050064 (1977-09-01), Hashimoto et al.
patent: 4060802 (1977-11-01), Matsuki
Anagnos Larry N.
Tokyo Shibaura Electric Co. Ltd.
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