Patent ID: 8184226

Claim:
A pixel structure for a liquid crystal display (LCD), comprising: a scanning line, a data line, a first pixel electrode and a second pixel electrode; and a thin film transistor (TFT) structure, comprising: a gate electrode, connecting to the scanning line; a dielectric layer, covering the gate electrode; a first patterned channel layer, disposed on the dielectric layer and above the gate electrode; a second patterned channel layer, disposed on the dielectric layer and above the gate electrode adjacent to the first patterned channel layer; a first electrode, including two branches, disposed on a portion of the first patterned channel layer, the first electrode being electrically connected to the first pixel electrode; a second electrode, connected to the data line, the second electrode disposed on another portion of the first patterned channel layer and a portion of the second patterned layer, the second electrode including three branches, the first electrode being parallel to the second electrode, and the three branches of the second electrode and the two branches of the first electrode being disposed alternatively on the first patterned channel layer, wherein the gate electrode, the dielectric layer, the first patterned channel layer, the first electrode and the second electrode construct a primary TFT structure with a plurality of first channels being formed within the first patterned channel layer and extending along a first direction substantially parallel to the data line; and a third electrode, disposed on another portion of the second patterned layer, the third electrode electrically connected to the second pixel electrode, wherein the gate electrode, the dielectric layer, the second patterned channel layer, the second electrode and the third electrode construct an auxiliary TFT structure with only one second channel being formed within the second patterned channel layer and extending along a second direction substantially perpendicular to the data line; wherein a channel width-to-length (W-L) ratio of each of the plurality of first channels of the primary TFT structure is larger than a channel width-to-length (W-L) ratio of the second channel of the auxiliary TFT structure.