Light emitting device comprising micro-structures
US10050173B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2016 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Feb 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/819
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A light emitting device includes a semiconductor light emitting unit and a light-transmitting substrate. The light-transmitting substrate includes an upper surface having two long sides and two short sides and a side surface, and the semiconductor light emitting unit is disposed on the upper surface. The side surface includes two first surfaces, two second surfaces, and rough micro-structures. Each of the first surfaces is connected to one of the long sides of the upper surface, and each of the second surfaces is connected to one of the short sides of the upper surface. The rough micro-structures are formed on the first surfaces and the second surfaces, a covering rate of the rough micro-structures on each of the first surfaces is greater than or equal to a covering rate of the rough micro-structures on each of the second surfaces. A manufacturing method of the light emitting device is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.