Patent ID: 7656419
Filing Date: 2010-02-02
Classification: G09G

Abstract:
1. A drive circuit for a display apparatus outputting a positive polarity analog picture signal and a negative polarity analog picture signal with respect to a reference voltage to a data line of the display apparatus, comprising: a positive polarity drive circuit outputting the positive polarity analog picture signal; a negative polarity drive circuit outputting the negative polarity analog picture signal; a switching circuit switching the positive polarity analog picture signal and the negative polarity analog picture signal to provide to the data line; a positive polarity pre-charge switch, formed between the positive polarity drive circuit and the switching circuit, capable of pre-charging the data line to a positive polarity pre-charge voltage before an analog signal provided to the data line is changed from the positive polarity to the negative polarity; and a negative polarity pre-charge switch, formed between the negative polarity drive circuit and the switching circuit, capable of pre-charging the data line to a negative polarity pre-charge voltage before an analog signal provided to the data line is changed from the negative polarity to the positive polarity.