Liquid crystal display and driving method thereof

Details Liquid crystal display and driving method thereof Liquid crystal display and driving method thereof

2006-07-18

2006-07-18

Chang, Kent (Department: 2675)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S691000, C345S099000, C345S078000

Reexamination Certificate

active

07079097

ABSTRACT:
The present invention provides an LCD capable of being driven with various frequencies without deterioration of image quality. According to the present invention, a method of driving an LCD in two-dot inversion for a low vertical frequency and in one-dot inversion for a high vertical frequency is provided. The method determines whether the vertical frequency of the LCD changes, changes the inversion type into one-dot inversion if the vertical frequency is changed from a low frequency to a high frequency, and changes the inversion type into two-dot inversion if the vertical frequency is changed from a high frequency to a low frequency. Moreover, if a flicker is generated when driving in one-dot inversion, the inversion type is changed into two-dot inversion. To avoid the unequal charging generated in the LCD driven in two-dot inversion, the pulse width of the gate signals are adjusted after measuring the load of the data line.

REFERENCES:
patent: 6727878 (2004-04-01), Okuzono et al.
patent: 2003/0160753 (2003-08-01), McCartney

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