Light-emitting apparatus
A light-emitting apparatus package of the present invention includes (i) an electrically insulated ceramic substrate, (ii) a first concave section formed in the direction of thickness of the ceramic substrate so as to form a light exit aperture in a surface of the ceramic substrate, (iii) a second concave section formed within the first concave section in the further direction of thickness of the ceramic substrate so that one or more light-emitting devices are provided therein, (iv) a wiring pattern for supplying electricity, which is provided in the first concave section, and (v) a metalized layer having light-reflectivity, which is (a) provided between the light-emitting device and the surface of the second concave section of the substrate, and (b) electrically insulated from the wiring pattern. On the account of this, the light-emitting apparatus package in which heat is excellently discharged and light is efficiently utilized and a light-emitting apparatus in which the light-emitting apparatus package is used can be obtained.
1. A light-emitting apparatus comprising:
a ceramic package;
a conductive pattern formed on said ceramic package;
a first light-emitting device mounted on a mounting area of said ceramic package, including an electrode electrically connected to said conductive pattern;
a protective device provided on said ceramic package and electrically connected to said first light-emitting device, and
a concave section formed on said ceramic package,
wherein said protective device is provided within said concave section.
2. The light-emitting apparatus of claim 1 , wherein said protective device is a capacitor element.
3. The light-emitting apparatus of claim 1 , wherein said protective device is provided on a bottom of said ceramic package.
4. The light-emitting apparatus of claim 1 , wherein said first light-emitting device is covered with a resin.
5. The light-emitting apparatus of claim 4 , further comprising a first wire connected between said conductive pattern and a top electrode of said first light-emitting device.
6. The light-emitting apparatus of claim 5 , wherein said first wire is covered with said resin.
7. The light-emitting apparatus of claim 4 , wherein said conductive pattern is covered with said resin.
8. The light-emitting apparatus of claim 4 , wherein said resin is made of a transparent resin.
9. The light-emitting apparatus of claim 1 , further comprising a metal layer buried in said ceramic package.
10. The light-emitting apparatus of claim 1 , further comprising terminal patterns provided on a bottom of said ceramic package,
wherein said terminal patterns are electrically connected to said conductive pattern.
11. The light-emitting apparatus of claim 1 , wherein a depth of said concave section is larger than a height of said protective device.
12. The light-emitting apparatus of claim 1 , wherein a thickness of said first light-emitting device is larger than a thickness of said protective device.
13. The light-emitting apparatus of claim 1 , wherein said ceramic package contains aluminum nitride.
14. The light-emitting apparatus of claim 1 , wherein said protective device is connected in parallel to said first light-emitting device.
15. The light-emitting apparatus of claim 1 , wherein a level of said mounting area on which said first light-emitting device is mounted differs from a level of a mounting area on which said protective device is provided.
16. The light-emitting apparatus of claim 15 , the level of said mounting area on which said first light-emitting device is mounted is above the level of the mounting area on which said protective device is provided.
17. The light-emitting apparatus of claim 1 , further comprising a second light-emitting device mounted on said mounting area of said ceramic package, including said electrode electrically connected to said conductive pattern.