Display drive device

Details Display drive device Display drive device

2008-09-23

2011-12-06

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S060000, C345S204000

Reexamination Certificate

active

08072447

ABSTRACT:
A display drive device includes a low-voltage circuit section driven by a first power supply potential and a high-voltage circuit section driven by a second power supply potential higher than the first power supply potential. The display drive device further includes a voltage supply circuit for supplying a third power supply potential different from the first and second power supply potentials, a common power supply line for connecting the third power supply potential to each of a plurality of output terminals, an output selection switch circuit for temporarily switching between display data output via the high-voltage circuit section to each output terminal, and the common power supply line, during a predetermined period, and a display data determining circuit for generating a control signal for controlling the output selection switch circuit. Thereby, the common power supply line is temporarily selected and controlled without signal collision when display data is switched.

REFERENCES:
patent: 5874935 (1999-02-01), Nishi et al.
patent: 7078865 (2006-07-01), Sano et al.
patent: 7084852 (2006-08-01), Nishi et al.
patent: 7116137 (2006-10-01), Nautiyal et al.
patent: 7319347 (2008-01-01), Cho et al.
patent: 2003/0174119 (2003-09-01), Nishi et al.
patent: 2008/0036749 (2008-02-01), Moriyama et al.

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