Semiconductor light emitting device and display device

By designing specific layer structures and material combinations in semiconductor light emitting devices, the problems of poor transfer, low light efficiency and insufficient brightness in micro LED displays are solved, and higher assembly rate and better optical performance are achieved.

CN120052072APending Publication Date: 2025-05-27LG ELECTRONICS INC
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Patent Information

Application Number
CN202280101073.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2022-10-14
Publication Date
2025-05-27

AI Technical Summary

Technical Problem

When transferring micro LEDs on large micro LED displays quickly and accurately, the prior art has problems such as high transfer failure rate, low light efficiency and insufficient brightness, especially the brightness of the red semiconductor light emitting device is low and the self-assembly rate is low.

Method used

A semiconductor light emitting device is designed, which includes a light emitting layer, a passivation layer, an insulating layer, a first electrode and a second electrode. By placing an insulating layer and a reflective layer below the first region of the light emitting layer, and an ohmic contact layer below the second region, the light efficiency and brightness are enhanced, while the assembly rate is increased through the magnetic layer.

Benefits of technology

The light efficiency and brightness of semiconductor light emitting devices are improved, the assembly failure rate is reduced, the assembly rate is enhanced, and the problem of poor electrical connection is prevented.

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Abstract

The semiconductor light emitting device includes: a light emitting layer having a first region and a second region surrounding the first region; a passivation layer surrounding a side portion of the light emitting layer; an insulating layer under the first region; a first electrode under the light emitting layer; and a second electrode on the light emitting layer. The first electrode includes: a reflective layer below the insulating layer and having a shape corresponding to a shape of the insulating layer; and an ohmic contact layer under the second region.
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