Patent ID: 8513668

Claim:
A thin film transistor device, disposed on a substrate, the thin film transistor device comprising: a first conductivity type thin film transistor, comprising a first patterned doped layer, a first gate electrode, a first source electrode, a first drain electrode, and a first semiconductor pattern, wherein the first source electrode and the first drain electrode are electrically connected to the first patterned doped layer; and a second conductivity type thin film transistor, comprising a second patterned doped layer, a second gate electrode, a second source electrode, a second drain electrode, and a second semiconductor pattern, wherein the second source electrode and the second drain electrode are electrically connected to the second patterned doped layer; wherein the first semiconductor pattern and the second semiconductor pattern form a patterned semiconductor layer, the first patterned doped layer is disposed under the first semiconductor pattern, and the second patterned doped layer is disposed on the second semiconductor pattern.