Patent ID: 7642710

Claim:
A pixel structure electrically connected to a scan line, a data line and a power line, comprising: a current control unit electrically connected to the scan line, the data line and the power line, wherein the current control unit comprises: a first active device having a first gate, a first source, and a first drain, wherein the first gate is electrically connected to the scan line, and the first source is electrically connected to the data line; a second active device having a second gate, a second source, and a second drain, wherein the second gate is electrically connected to the first drain, the second source is electrically connected to the power line, and the second drain is electrically connected to the pixel electrode; and a capacitor electrically connected between the second gate and the power line; a pixel electrode electrically connected to the current control unit; and a redundant active device electrically connected to the pixel electrode and the current control unit and electrically insulated from the power line, wherein the redundant active device has a third gate, a third source, and a third drain, wherein the third gate is electrically connected to the first drain, the third source is electrically insulated from the power line, and the third drain is electrically connected to the pixel electrode.