Patent ID: 8217925
Filing Date: 2012-07-10
Classification: G09G

Abstract:
1. A driver for a liquid crystal display panel, said driver, comprising: a first input differential stage circuit which comprises: a first active load comprising a plurality of first conductive-type transistors in a folded cascade connection; and a second active load comprising a plurality of second conductive-type transistors in the folded cascade connection; a first output stage circuit; a second output stage circuit; and a first switch circuit configured to select one of said first and second output stage circuits and to connect an input pair of the selected output stage circuit with an output pair of said first input differential stage circuit, wherein one of a positive polarity voltage and a negative polarity voltage, and a first single end signal, which is outputted from the selected output stage circuit, are inputted to said first input differential stage circuit, wherein said first input differential stage circuit outputs from the output pair thereof two first input stage output signals having signal levels different from each other based on one of said positive polarity voltage and said negative polarity voltage, wherein each input pair of said first output stage circuit and said second output stage circuit is connected with the outer pair of said first active load and said second active load in said first input differential stage circuit through said first switch circuit, and said two first input stage output signals from said first active load and said second active load are inputted to said input pair of the selected output stage circuit, and wherein the selected output stage circuit outputs said first single end signal based on said two first input stage output signals to a capacitive load of said liquid crystal display panel.