Display panel driving method and display apparatus

Details Display panel driving method and display apparatus Display panel driving method and display apparatus

1996-07-11

1998-10-27

Chow, Dennis-Doon

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

345 95, 345210, G09G 336

Patent

active

058283579

ABSTRACT:
In a display apparatus for performing multiple-level gradation display, the number of connection terminals of the drive circuit thereof is reduced so as to reduce the number of analog switches in the drive circuit. First and second reference voltages which rise stepwise with time are supplied to analog switches that are selectively turned on and off in accordance with gradation display data elements. Among potentials included in the changing first and second reference voltages, a potential corresponding to gradation display data is supplied to the pixel electrodes via source lines to perform gradation display in accordance with the gradation display data.

REFERENCES:
patent: 5602561 (1997-02-01), Kawaguchi et al.
patent: 5604510 (1997-02-01), Blanchard
patent: 5621426 (1997-04-01), Okada et al.
patent: 5640174 (1997-06-01), Kamei et al.
English language abstract of JP-A 5-297833.
English language abstract of JP-B2 7-50389.
English language abstract of JP-A 4-214594.

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