Patent ID: 6919875
Filing Date: 2005-07-19
Classification: G09G,G11C

Abstract:
1. A flip-flop circuit in a master slave form including an input terminal and an output terminal in which circuits each formed by connecting two inverters in a loop shape are connected in two stages comprising: a first switch circuit which connects the input terminal with a first terminal; a second switch circuit which connects the output terminal with a second terminal; a third switch circuit disposed between the path from the first switch circuit to the input terminal and the second terminal; and a fourth switch circuit disposed between the path from the output terminal to the second switch circuit and the first terminal; wherein when the first and second switch circuits are turned ON and the third and fourth switch circuits are turned OFF, the first terminal operates as an input terminal and the second terminal operates as an output terminal, and oppositely when the first and second switch circuits are turned OFF and the third and fourth switch circuits are turned ON, the second terminal operates as an input terminal and the first terminal operates as an output terminal.