Sony patents light emitter design to prevent cracking during use
Sony describes a surface-emitting light element that uses a specific oxide layer to trap light. This layer features tapered edges that gradually thin out, which helps prevent the material from cracking when the device is heated or mounted.
In the filing’s own words
To provide a surface-emitting element capable of suppressing occurrence of cracks due to an oxide confinement layer during driving and/or mounting. A surface-emitting element according to the present technology includes a first structure including a first semiconductor structure, a second structure stacked with the first structure and including a second semiconductor structure, and a third structure arranged between the first and second structures and including a light-emitting layer, in which an oxide confinement layer is provided between a surface of the first structure on a side opposite a light-emitting layer side and the light-emitting layer and/or between a surface of the second structure on a side opposite the light-emitting layer side and the light-emitting layer, the oxide confinement layer including a non-oxidized region, and an oxidized region surrounding at least a part of the non-oxidized region, and the oxidized region has a plurality of tapered portions whose thickness decreases toward inner peripheral ends. With the surface-emitting element according to the present technology, a surface-emitting element capable of suppressing occurrence of cracks due to an oxide confinement layer during driving and/or mounting can be provided.
What exactly they claim (claim 1)
1. A surface-emitting element comprising: a first structure including a first semiconductor structure; a second structure stacked with the first structure and including a second semiconductor structure; and a third structure arranged between the first and second structures and including a light-emitting layer, wherein an oxide confinement layer is provided between a surface of the first structure on a side opposite a light-emitting layer side and the light-emitting layer and/or between a surface of the second structure on a side opposite the light-emitting layer side and the light-emitting layer, the oxide confinement layer including: a non-oxidized region; and an oxidized region surrounding at least a part of the non-oxidized region, and the oxidized region has a plurality of tapered portions whose thickness decreases toward inner peripheral ends.
Facts
- Company
- Sony (Sony Semiconductor Solutions Corporation)
- Official title
- SURFACE-EMITTING ELEMENT
- Publication number
- US20260302729A1
- Application number
- 19477678
- Filed
- Apr 10, 2024
- Published
- Oct 1, 2026
- Inventors
- 6
- Claims
- 20
Classified under
H01S 5/18338 Electricity & electronicsH01S 5/18311 Electricity & electronicsH01S 5/1835 Electricity & electronicsH10H 20/8162 Electricity & electronicsMore from Sony in Chips & hardware
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.