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Mini LED chip and manufacturing method thereof

A manufacturing method and chip technology, which can be applied to electrical components, circuits, semiconductor devices, etc., can solve problems such as the thickness of display devices, and achieve the effects of large area, improved luminous efficiency, and improved reliability.

Pending Publication Date: 2021-03-09
XIAMEN CHANGELIGHT CO LTD
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the LCD itself does not emit light, it needs to be coupled with an external light source to achieve display, resulting in a relatively thick display device for the LCD

Method used

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  • Mini LED chip and manufacturing method thereof
  • Mini LED chip and manufacturing method thereof
  • Mini LED chip and manufacturing method thereof

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Embodiment Construction

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0055] As mentioned in the background technology, with the upgrading of display panels, a new type of display panel-micro-light-emitting diode (Mini LED) display panel has appeared on the market, which is also an active light-emitting device, and compared with OLED display panels , with faster response speed, wider operating temperature range, higher light source utilization, longer life, and lower cost, these advantages make micro-LED display panels expected t...

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Abstract

The invention provides a Mini LED chip and a manufacturing method thereof. A first type semiconductor layer and a first bonding electrode are not connected by a corresponding auxiliary extension electrode, namely, the auxiliary extension electrode is not made on the exposed surface of the first type semiconductor layer at the electrode contact part, therefore, the problem that the contact hollow part of the expanded electrode occupies large area due to the existence of the auxiliary expanded electrode is avoided, large area of the light-emitting region is ensured, and the light-emitting efficiency of the Mini LED chip is improved. Furthermore, according to the technical scheme provided by the invention, the auxiliary extension electrode does not need to be manufactured, so that the problems that the flatness of the prepared first bonding electrode is poor and the coverage effect of the insulation isolation reflection layer is poor due to the existence of the auxiliary extension electrode are avoided, the reliability of the Mini LED chip is improved, and meanwhile, the light-emitting angle of the Mini LED chip is ensured to achieve an expected effect.

Description

[0001] This application claims the priority of the Chinese patent application with the application number 201911366387.1 and the title of the invention "a Mini LED chip and its manufacturing method" submitted to the China Patent Office on December 26, 2019, the entire contents of which are incorporated herein by reference. Applying. technical field [0002] The present invention relates to the technical field of semiconductor devices, and more specifically, to a Mini LED (Mini LightEmitting Diode, Micro Light Emitting Diode) chip and a manufacturing method thereof. Background technique [0003] Liquid Crystal Display (LCD) has the advantages of light weight, thin thickness, easy driving, and no harmful rays, and is widely used in modern information equipment such as TVs, notebook computers, and mobile phones. However, since the LCD itself does not emit light, it needs to be coupled with an external light source to achieve display, resulting in a relatively thick display devi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/46H01L33/38H01L33/00
CPCH01L33/46H01L33/382H01L33/005
Inventor 刘英策李俊贤刘兆黄瑄邬新根
Owner XIAMEN CHANGELIGHT CO LTD
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