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Thin-film transistor, manufacturing method therefor, display substrate, and display device

A technology of thin film transistors and substrate substrates, applied in the fields of thin film transistors and their manufacturing methods, display devices, and display substrates, can solve the problems of effective heat removal and derivation without heat, and achieve the effects of ensuring image display quality and reducing self-heating effects

Active Publication Date: 2015-09-09
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] As for the self-heating effect generated by the current in the channel region, there is currently no effective technical means to effectively export heat

Method used

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  • Thin-film transistor, manufacturing method therefor, display substrate, and display device
  • Thin-film transistor, manufacturing method therefor, display substrate, and display device
  • Thin-film transistor, manufacturing method therefor, display substrate, and display device

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Embodiment Construction

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.

[0053] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguis...

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Abstract

The invention provides a thin-film transistor, a manufacturing method therefor, a display substrate, and a display device. A heat-dissipation layer with a preset conductivity is disposed between a source electrode pattern and a drain electrode pattern which are disposed at the same layer of the thin-film transistor, thereby speeding up the heat transfer in a trench region of the thin-film transistor, effectively reducing the impact from the self-heating effect of the thin-film transistor, and guaranteeing the normal operation of the display device.

Description

technical field [0001] The present invention relates to the field of display technology, and specifically relates to a thin film transistor and a manufacturing method thereof, a display substrate, and a display device. Background technique [0002] In recent years, organic light-emitting diodes, also known as organic light-emitting diodes (OLEDs), have become the main display type of flexible displays due to various advantages. [0003] Flexible OLED displays have high requirements on the uniformity and Vth reliability of the threshold voltage (Vth) of the flexible thin film transistor (TFT), that is, the electrical bias threshold voltage drift (Bias stress) characteristics, and generally require a floating value of the threshold voltage (△Vth ) is less than 0.3V. Therefore, the suppression of electrical bias threshold voltage drift and the improvement of the structure / process of flexible thin film transistors have become the technical development trend of flexible thin fil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L29/786H01L21/336H01L27/12H01L27/32H01L23/24H10K99/00
CPCH01L27/1214H01L29/66742H01L29/786H10K59/8794H10K10/80H01L29/78606H10K10/462H10K10/464H10K10/484H10K10/471H10K10/474H10K19/10H10K59/00H10K85/10H10K85/221H10K59/125H01L23/24H01L23/3737H01L27/12
Inventor 黄维
Owner BOE TECH GRP CO LTD
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