Display driving circuit

Details Display driving circuit Display driving circuit

2005-09-27

2005-09-27

Chang, Kent (Department: 2675)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S042000, C345S048000, C345S092000, C318S161000

Reexamination Certificate

active

06950082

ABSTRACT:
A display driving circuit. The circuit comprises a first electrode from which a data signal is output, a second electrode from which a scan signal is output, a capacitor having a first and second end with a voltage difference therebetween, a light emitting diode having an anode and cathode coupled to a first power supply providing a first voltage(Vss), a first switch having a first end coupled to the first electrode to receive the data signal and a second end coupled to the first end of the capacitor, a second switch having a first end coupled to a second power supply providing a second voltage(VDD) and a second end coupled to the anode of the light emitting diode, and a third switch having a first end coupled to a third power supply providing a third voltage(Vref) and a second end coupled to the second end of the capacitor.

REFERENCES:
patent: 6229506 (2001-05-01), Dawson et al.
patent: 6229508 (2001-05-01), Kane
patent: 6693388 (2004-02-01), Oomura
patent: 6734636 (2004-05-01), Sanford et al.
patent: 2003/0098829 (2003-05-01), Chen et al.

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