Patent ID: 7119777
Filing Date: 2006-10-10
Classification: G09G,H01L

Abstract:
1. A pixel structure of an active organic light emitting diode, comprising: an organic light emitting diode; a data-line; a scan-line; a switch thin film transistor having a first gate terminal, a first source terminal, a first drain terminal and a first lightly doped drain region, wherein the first gate terminal is coupled to the scan-line and the first source terminal is coupled to the data-line; a control thin film transistor having a second gate terminal, a second source terminal, a second drain terminal and a second lightly doped drain region, wherein the second drain terminal is coupled to the organic light emitting diode and the first lightly doped drain region and the second lightly doped drain region have different doped concentrations; and a capacitor coupled to the first drain terminal and to the second gate terminal.