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Thin film transistor and manufacturing method thereof, flexible display screen and display device

A technology of thin film transistors and semiconductors, applied in the direction of transistors, semiconductor/solid-state device manufacturing, electric solid-state devices, etc., can solve the problem of low reliability of image display, achieve the effect of reducing image differences, improving reliability, and small changes

Active Publication Date: 2018-09-04
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Embodiments of the present invention provide a thin film transistor and its manufacturing method, a flexible display screen and a display device, which can solve the problem of low reliability of image display

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  • Thin film transistor and manufacturing method thereof, flexible display screen and display device
  • Thin film transistor and manufacturing method thereof, flexible display screen and display device
  • Thin film transistor and manufacturing method thereof, flexible display screen and display device

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Embodiment Construction

[0078] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments . Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0079] TFTs used in current flexible display screens are rectangular TFTs. When the flexible display is bent, the film layer of the rectangular TFT will break due to the tensile force. According to whether the direction of the side length of the TFT (such as the length direction or the width direction) is the same as or different from the direction of the bend, there will be at least two possible changes in the characteristics of the TFT. ...

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Abstract

The invention relates to a thin film transistor and a manufacturing method thereof, a flexible display screen and a display device, and belongs to the field of display technology application. The thinfilm transistor is arranged on an underlying substrate. The thin film transistor comprises a semiconductor active layer, source and drain patterns and gate patterns. The gate patterns include a gateelectrode. The gate patterns are arranged on one side, which is away from the underlying substrate, of the semiconductor active layer and insulated from the semiconductor active layer. The source anddrain patterns include a first electrode and a second electrode which are the source electrode and the drain electrode respectively. The source and drain patterns are electrically connected with the semiconductor active layer. The first electrode, the gate electrode and the second electrode present to be the first pattern, the first circle and the second circle which are nested from inside to outside in turn and arranged in a spacing way on the plane parallel to the underlying substrate. The semiconductor active layer presents to be circular on the plane parallel to the underlying substrate. The first pattern is one of the round and circle. The problem of low reliability of image display can be solved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a thin film transistor and a manufacturing method thereof, a flexible display screen and a display device. Background technique [0002] With the development of display technology, flexible display screens have received more and more attention. [0003] The current flexible display screen is usually an active display screen, and its pixels are controlled by TFT (Thin Film Transistor, thin film transistor). The TFT is a rectangular TFT, which includes a source, a drain, a semiconductor active layer and a gate. The pole, the drain, the semiconductor active layer and the gate are all rectangular structures. [0004] However, in the flexible display screen, when the rectangular TFT is bent in different directions, its TFT characteristics change greatly, resulting in a large difference in the final image displayed on the flexible display screen, thus affecting the reliability of ima...

Claims

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Application Information

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IPC IPC(8): H01L29/417H01L29/423H01L29/786H01L21/44H01L21/34
CPCH01L29/401H01L29/41733H01L29/42384H01L29/66969H01L29/7869H01L27/1218H01L27/1248H01L21/0274H01L21/47573H01L21/47635H01L27/1225H01L27/124H01L27/1288
Inventor 栾梦雨彭裕清李菲陈琳胡友元李慧慧吴新风王欣竹
Owner BOE TECH GRP CO LTD
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