Drive substrates and display panels
AssigneeShenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorChuanbao Luo
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Abstract
Drive substrates and display panels are provided. In a thin film transistor of the drive substrate, a structure with double-gate and double-active layer is formed by a first active layer, a first gate, a first sub-gate of a second gate, and a part of a second active layer in an area adjacent to an output electrode; and a structure with single active layer and top gate is formed by a second sub-gate of the second gate and a part of the second active layer in an area adjacent to an input electrode. The first gate and the second gate together control a first channel of the first active layer and a first portion of a second channel of the second active layer.
Claims20
A drive substrate, comprising:
- a base;
- a first gate, disposed on the base;
- a first insulation layer, disposed on the base and covering the first gate;
- a first active layer, disposed on the first insulation layer and comprising a first channel overlapping the first gate;
- a second active layer, comprising a second channel, a first contact portion, and a second contact portion, wherein the second channel comprises a first portion and a second portion connected with each other;
- the first contact portion is connected to a side of the first portion away from the second portion, and the second contact portion is connected to a side of the second portion away from the first portion;
- the first portion is directly connected to the first channel;
- and the second portion and the first channel are both attached to the first insulation layer, and the second portion is disposed on a side of the first channel away from the first contact portion in a direction parallel to the first insulation layer;
- a second insulation layer, disposed on the second active layer;
- a second gate, disposed on the second insulation layer and comprising a first sub-gate and a second sub-gate connected with each other, wherein the first sub-gate overlaps the first portion, and the second sub-gate overlaps the second portion;
- an input electrode, connected to the second contact portion;
- and
- an output electrode, connected to the first contact portion.
A display panel, comprising:
- a drive substrate, comprising:
- a base;
- a first gate, disposed on the base;
- a first insulation layer, disposed on the base and covering the first gate;
- a first active layer, disposed on the first insulation layer and comprising a first channel overlapping the first gate;
- a second active layer, comprising a second channel, a first contact portion, and a second contact portion, wherein the second channel comprises a first portion and a second portion connected with each other;
- the first contact portion is connected to a side of the first portion away from the second portion, and the second contact portion is connected to a side of the second portion away from the first portion;
- the first portion is directly connected to the first channel;
- and the second portion and the first channel are both attached to the first insulation layer, and the second portion is disposed on a side of the first channel away from the first contact portion in a direction parallel to the first insulation layer;
- a second insulation layer, disposed on the second active layer;
- a second gate, disposed on the second insulation layer and comprising a first sub-gate and a second sub-gate connected with each other, wherein the first sub-gate overlaps the first portion, and the second sub-gate overlaps the second portion;
- an input electrode, connected to the second contact portion;
- and
- an output electrode, connected to the first contact portion;
- and
- a light emitting element, disposed on the drive substrate and connected to the output electrode.
Dependencies are inferred from the claim text.