Light-emitting device
US11398583B2 · kind B2 · utility
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14Claims
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Assignee
Inventors
Key dates
| Filing date | Sep 2, 2020 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Sep 2, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/824
Abstract
A light-emitting device, includes a substrate structure, including a base portion having a surface and a plurality of protrusions regularly formed on the base portion; a buffer layer covering the plurality of protrusions and the surface; and III-V compound semiconductor layers formed on the buffer layer; wherein one of the plurality of protrusions includes a first portion and a second portion formed on the first portion and the first portion is integrated with the base portion; and wherein the base portion includes a first material and the first portion includes the first material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.