Display driver with charge pumping signals synchronized to...

Details Display driver with charge pumping signals synchronized to... Display driver with charge pumping signals synchronized to...

2004-11-12

2009-12-15

Awad, Amr (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C345S098000

Reexamination Certificate

active

07633498

ABSTRACT:
A display driver generates a respective charge pumping signal and respective driving signals synchronized to a respective same clock signal for each of the CPU and video interface modes. Because such respective signals are synchronized to a respective same clock signal, the noise superimposed on the driving signals applied on a display panel is regular and uniform across the whole display panel, for each of the CPU and video interface modes. Accordingly, affects of such regular noise are advantageously not noticeable to the human eye, for both the video and CPU interface modes of operation.

REFERENCES:
patent: 2002/0044118 (2002-04-01), Sekido et al.
patent: 2003/0011586 (2003-01-01), Nakajima
patent: 2004/0095342 (2004-05-01), Lee et al.
Korean Patent Application No. 1020000036226 to Baek with title “LCD having Multi-Timing Controller” (w/ English Abstract page), published: Sep. 1, 2002.

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