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Light Emitting Device&Nbsp; Light Bulb Shaped Lamp And Lighting Apparatus
Abstract: A light-emitting device capable of effectively dissipating heat generated at an LED is provided. The light-emitting device according to the present invention includes: a base board (140); and an LED chip (150) mounted on the base board (140). The base board (140) is a translucent base board made of a polycrystalline ceramic. A main region of the base board (140) is a region including an element mounted region (A2) on which the LED chip (150) is mounted and an average grain size of the polycrystalline ceramic in the main region is between 10 µm and 40 µm inclusive. An end portion region (A1) of said base board (140) is a region around an end portion and an average grain size of the polycrystalline ceramic in the end portion region (A1).
Notices, Deadlines & Correspondence
Patent Information
Applicants
Panasonic Corporation
Inventors
1. TAKEUCHI Nobuyoshi
2. MATSUDA Tsugihiro
3. NAGAI Hideo
4. MIKI Masahiro
5. UEMOTO Takaari
Specification
Please see the attachments.
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | Form-5.pdf | 2012-03-09 |
| 2 | Form-3.pdf | 2012-03-09 |
| 3 | Form-1.pdf | 2012-03-09 |
| 4 | 2011-CHENP-2012 POWER OF ATTORNEY 24-08-2012.pdf | 2012-08-24 |
| 5 | 2011-CHENP-2012 CORRESPONDENCE OTHERS 24-08-2012.pdf | 2012-08-24 |
| 6 | 2011-CHENP-2012 CORRESPONDENCE OTHERS 04-09-2012.pdf | 2012-09-04 |
| 7 | 2011-CHENP-2012 FORM-3 04-09-2012.pdf | 2012-09-04 |
| 8 | 2011-CHENP-2012 CORRESPONDENCE OTHERS 13-09-2012.pdf | 2012-09-13 |