Patent ID: 11882742
Assignee: LG DISPLAY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 16:
17. The display panel of claim 16, wherein the circuit layer includes:
a gate driver including a shift register,
each of signal transmitters in the shift register includes:
a first control node, a second control node, and a control circuit configured to charge and discharge the first and second control nodes in response to input signals; and
a buffer configured to output a gate pulse to a first output node and to output a carry pulse to a second output node,
at least one of the control circuit and the buffer includes at least two transistors of a transistor having a source contact structure, a transistor having a back gate, and a transistor having a double gate,
the transistor having Ta source contact structure includes a gate electrode, a first oxide semiconductor pattern, a first electrode in contact with one side of the first oxide semiconductor pattern, a second electrode in contact with the other side of the first oxide semiconductor pattern, and a metal pattern disposed under the first oxide semiconductor pattern and configured to be in contact with the second electrode,
the transistor having a back gate includes a gate electrode, a second oxide semiconductor pattern, a first electrode in contact with one side of the second oxide semiconductor pattern, a second electrode in contact with the other side of the second oxide semiconductor pattern, and a metal pattern disposed under the second oxide semiconductor pattern and to which a constant voltage is applied,
the transistor having a double gate includes a gate electrode, a third oxide semiconductor pattern, a first electrode in contact with one side of the third oxide semiconductor pattern, a second electrode in contact with the other side of the third oxide semiconductor pattern, and a metal pattern disposed under the third oxide semiconductor pattern and configured to be in contact with the gate electrode.