Patent ID: 6836264
Filing Date: 2004-12-28
Classification: G09G

Abstract:
A driving circuit of a display for driving a light-emitting device having a positive terminal and a negative terminal, the driving circuit comprising: a first transistor having a drain terminal, a gate terminal and a source terminal, wherein the drain terminal of the tirst transistor is coupled to an inverted data voltage line and the gate terminal of the first transistor is coupled to a scanning voltage line; a capacitor having a first terminal and a second terminal, wherein the first terminal of the capacitor is coupled to the source terminal of the first transistor and the second terminal of the capacitor is coupled to a first voltage line; a second transistor having a drain terminal, a gate terminal and a source terminal, wherein the gate terminal of the second transistor is coupled to the source terminal of the first transistor and the first terminal of the capacitor, and the source terminal of the second transistor is coupled to the first voltage line; a third transistor having a drain terminal, a gate terminal and a source terminal, wherein the drain terminal of the third transistor is coupled to the gate terminal of the third transistor and a second voltage line, and the source terminal of the third transistor is coupled to the drain terminal of the second transistor; and a fourth transistor having a drain terminal, a gate terminal and a source terminal, wherein the drain terminal of the fourth transistor is coupled to a third voltage line, the gate terminal of the fourth terminal is coupled to the drain terminal of the second transistor, and the source terminal of the fourth transistor is coupled to the positive terninal of the light-emitting device.