Light-emitting device each having variable distances between pairs of electrode pads with respect to Zener diodes and lighting apparatus using the same
US9070831B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Sep 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/181
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-emitting device including: a substrate; LEDs arranged on the substrate in a row; electrode pad pairs each including electrode pads at opposite sides of a corresponding LED in a row direction; Zener diodes (protective elements) in one-to-one correspondence to circuits (groups) U1 to U8 each including nine consecutive LEDs, each protective element being located between adjacent electrode pads; and a sealing member sealing the LEDs, the electrode pad pairs, and the Zener diodes, wherein, in each circuit, a distance between electrode pads included in an electrode pad pair corresponding to an LED located closest to the Zener diode is the shortest, and a distance between electrode pads varies between two electrode pad pairs other than the electrode pad pair corresponding to the closest LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.