Patent ID: 9035936
Filing Date: 2015-05-19
Classification: G09G

Abstract:
1. A circuit for driving an organic EL device, comprising: a first transistor circuit and a second transistor circuit connected serially between a first fixed power source and a second fixed power source, and a third transistor circuit and a fourth transistor circuit connected serially between the first fixed power source and the second fixed power source, the first fixed power source being at a first fixed power source side and the second fixed power source being at a second fixed power source side, such that the first transistor circuit and the third transistor circuit are on the first fixed power source side and the second transistor circuit and the fourth transistor circuit are on the second fixed power source side, wherein a first input voltage is applied to an input terminal of the second transistor circuit and a second input voltage is applied to an input terminal of the fourth transistor circuit, an input terminal of the first transistor circuit is connected to an output terminal of the third and the fourth transistor circuits, and an input terminal of the third transistor circuit is connected to an output terminal of the first and the second transistor circuits, and wherein at least one of the first and third transistor circuits comprises double gate transistors and at least one of the second and fourth transistor circuits comprises double gate transistors; and a switch element for applying a voltage of a third fixed power source to a common connection node of the double gate transistors at a first side, the first side being one of the first fixed power source side or the second fixed power source side when the transistor circuits at a second side are in an operating state, the second side being the other of the first fixed power source side or the second fixed power source side, and wherein the voltage of the third fixed power source has a value between voltages of the first fixed power source and the second fixed power source.