Sony patents LED design with a raised reflector to boost light output
Sony has been granted a patent for a light-emitting element that uses a stacked semiconductor structure to produce light. The design features a convex, or curved, reflective layer on one side and a flat reflective layer on the other, separated by an insulating wall to manage how light is directed.
In the filing’s own words
A light emitting element ( 10 A) of the present disclosure includes: a stacked structure ( 20) in which a first compound semiconductor layer ( 21) having a first surface ( 21 a) and a second surface ( 21 b), an active layer ( 23), and a second compound semiconductor layer ( 22) having a first surface ( 22 a) and a second surface ( 22 b) are stacked; a first light reflecting layer ( 41) formed on a first surface side of the first compound semiconductor layer ( 21) and having a convex shape in a direction away from the active layer ( 23); and a second light reflecting layer ( 42) formed on a second surface side of the second compound semiconductor layer ( 22) and having a flat shape, in which a partition wall ( 24) extending in a stacking direction of the stacked structure ( 20) is formed so as to surround the first light reflecting layer ( 41).
What exactly they claim (claim 1)
1. A light emitting element comprising: a stacked structure in which a first compound semiconductor layer having a first surface and a second surface opposing the first surface, an active layer facing the second surface of the first compound semiconductor layer, and a second compound semiconductor layer having a first surface facing the active layer and a second surface opposing the first surface are stacked; a first light reflecting layer formed on a first surface side of the first compound semiconductor layer and having a convex shape in a direction away from the active layer; and a second light reflecting layer formed on a second surface side of the second compound semiconductor layer and having a flat shape, wherein a partition wall extending in a stacking direction of the stacked structure is formed of an insulating material so as to surround the first light reflecting layer, wherein the partition wall is a structural member formed separately from an electrode provided on the first surface.
Facts
- Company
- Sony (Sony Group Corporation)
- Official title
- Light emitting element
- Patent number
- US12749868B2
- Application number
- 17789875
- Filed
- Dec 7, 2020
- Granted
- Sep 29, 2026
- Inventors
- 3
- Claims
- 20
Classified under
H01S 5/0601 Electricity & electronicsH01S 5/02469 Electricity & electronicsH01S 5/18361 Electricity & electronicsH01S 5/34333 Electricity & electronicsH01S 5/423 Electricity & electronicsH01S 5/04253 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.