Thin film transistor and display panel

A technology of thin film transistor and polysilicon layer, which is applied in transistors, semiconductor devices, electric solid devices, etc., can solve the problems of complicated manufacturing process and achieve the effect of reducing off-current
CN106663697BInactive Publication Date: 2019-11-12SAKAI DISPLAY PROD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SAKAI DISPLAY PROD
Publication Date
2019-11-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

Provided are a thin film transistor capable of reducing off-state current and a display panel having the thin film transistor. The thin film transistor comprises: a gate electrode (2) formed on the surface of the substrate (1); a polysilicon layer (5) formed on the upper side of the gate electrode; an amorphous silicon layer (4, 6) formed to cover Above-mentioned polysilicon layer; n+ silicon layer (7), is formed on the upper side of above-mentioned amorphous silicon layer; And source electrode (8) and drain electrode (9) are formed on above-mentioned n+ silicon layer; Above-mentioned polysilicon layer, In a projected state where the source electrode and the drain electrode are projected on the surface of the substrate, a part of the polysilicon layer overlaps with a part of the source electrode and a drain electrode, and is positioned on the source electrode and the drain electrode in the projected state. In the polysilicon layer between the electrodes, the minimum dimension in the width direction perpendicular to the length direction between the source electrode and the drain electrode is smaller than the width direction dimension of the source electrode and the drain electrode.
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Description

technical field

[0001] The invention relates to a thin film transistor and a display panel with the thin film transistor. Background technique

[0002] TFT (Thin Film Transistor: Thin Film Transistor) liquid crystal display is bonded by setting a required gap between the TFT substrate and the color filter substrate with R (red), G (green), and B (blue), and attaching it to the Liquid crystal is injected between the TFT substrate and the color filter substrate, and the light transmittance of the liquid crystal molecules of each pixel is adjusted to display images.

[0003] In the TFT substrate, the data lines and the scanning lines are arranged in a grid pattern along the horizontal and vertical directions, and pixels composed of TFTs are formed at the intersections of the data lines and the scanning lines. In addition, a driver circuit made of TFTs for driving the data lines and the scanning lines is formed around a display area made up of a plurality of pixels.

[0004] A...

Claims

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