Display device
AssigneeJapan Display Inc.
InventorManabu Yamashita
Life of this patent
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Abstract
The purpose of the invention is to countermeasure a disconnection between the drain electrode or the source electrode and the wiring or the electrode formed on the insulating film via through hole. The concrete structure is that: A display device having a display area including a plurality of pixels comprising: the pixel includes a thin film transistor having a semiconductor layer as an active element, a first insulating film is formed to cover a drain electrode of the thin film transistor, the drain electrode is connected with an electrode or an wiring that are formed on the first insulating film via a through hole, an oxide semiconductor layer exists between the drain electrode and the first insulating film, the oxide semiconductor layer does not exist at the bottom of the through hole.
Claims19
A display device having a display area including a plurality of pixels comprising:
- the pixel includes a thin film transistor having a semiconductor layer as an active element,
- a first insulating film is formed to cover a drain electrode of the thin film transistor,
- the drain electrode is connected with an electrode or an wiring that are formed on the first insulating film via a through hole,
- an oxide semiconductor layer exists between the drain electrode and the first insulating film,
- the oxide semiconductor layer does not exist at the bottom of the through hole,
- wherein a thickness of the oxide semiconductor layer between the drain electrode and the first insulating film is smaller than a thickness of the oxide semiconductor layer as the active element.
A display device having a display area and a peripheral driving circuit comprising:
- the peripheral driving circuit includes a plurality of thin film transistors, which include a plurality of semiconductors as active elements,
- a first insulating film is formed to cover a circuit wiring that connects the plurality of thin film transistors,
- the circuit wiring is connected with an electrode or a wiring that are formed on the first insulating film via a through hole,
- an oxide semiconductor layer exists between the circuit wiring and the first insulating film,
- the oxide semiconductor layer does not exist at the bottom of the through hole.
A display device having a display area including a plurality of pixels comprising:
- the pixel includes a thin film transistor having a semiconductor layer as an active element,
- a first insulating film is formed to cover a gate electrode of the thin film transistor,
- the gate electrode is connected with an electrode or an wiring that are formed on the first insulating film via a through hole,
- an oxide semiconductor layer exists between the gate electrode and the first insulating film,
- the oxide semiconductor layer does not exist at the bottom of the through hole.
Dependencies are inferred from the claim text.