Thin film transistor comprising active layer having thickness difference and display apparatus comprising the same
AssigneeLG Display Co., Ltd.
InventorsJuHeyuck Baeck, Dohyung Lee, ChanYong Jeong
Life of this patent
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Abstract
A thin film transistor is disclosed. The thin film transistor comprises an active layer, and a gate electrode overlapped with the active layer, wherein the active layer includes a channel portion overlapped with the gate electrode, and the channel portion includes a source boundary portion, a drain boundary portion, and a main channel portion, wherein at least a part of the drain boundary portion have a relatively smaller thickness in comparison to a thickness of the main channel portion. Also, according to one embodiment of the present disclosure, a display apparatus comprising the thin film transistor is provided.
Claims16
A thin film transistor comprising:
- a gate electrode on a substrate;
- an active layer spaced apart from the gate electrode and overlapping at least a part of the gate electrode, the active layer including a channel portion;
- a gate insulating layer disposed between the active layer and the gate electrode;
- and
- source and drain electrodes connected with the active layer and spaced apart from each other,
- wherein the gate electrode is between the substrate and the active layer, and
- wherein the channel portion includes,
- a first boundary portion connected with one of the source and drain electrodes;
- a second boundary portion connected with the other one of the source and drain electrodes;
- and
- a main channel portion interposed between the first boundary portion and the second boundary portion,
- wherein at least a part of the second boundary portion has a thickness smaller than a thickness of the main channel portion, and
- wherein at least a first part of the gate insulating layer overlapping the second boundary portion has a thickness smaller than a thickness in a second part of the gate insulating layer that overlaps the main channel portion.
Dependencies are inferred from the claim text.