LCD drive apparatus

Details LCD drive apparatus LCD drive apparatus

2005-01-18

2005-01-18

Chang, Kent (Department: 2673)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S087000, C345S211000

Reexamination Certificate

active

06844867

ABSTRACT:
A display voltage generating circuit (2-1) for generating display voltages needed to drive an LCD has switches (SW1-1to SW1-5), of which each has one end connected to one of capacitors (C1to C5) for smoothing display voltages (V1to V5) and has the other end connected through one of resistors (R11to R15) to a supplied voltage (VCC). By an output from a timer (T-1), the switches are kept on for a predetermined period after electric power starts being supplied, so that the capacitors are charged with the supply voltage.

REFERENCES:
patent: 5859632 (1999-01-01), Ito
patent: 5867138 (1999-02-01), Moon
patent: 6275208 (2001-08-01), Park
patent: 6317120 (2001-11-01), Eu
patent: 6670935 (2003-12-01), Yeon et al.
patent: 02-102522 (1990-08-01), None
patent: 11-167366 (1999-06-01), None
patent: 11-219147 (1999-08-01), None
International Patent Search dated Dec. 18, 2001.

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