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, the entire ceramic package being made only of silicon carbide, alumina, or aluminum nitride;
a conductive pattern formed on said ceramic package;
a light-emitting device mounted on a mounting area of said ceramic package, including an electrode electrically connected to said conductive pattern; and
a metal layer including (i) a first region located under the light-emitting device and (ii) a second region located under the conductive pattern,
the second region of the metal layer being embedded in said ceramic package,
a thickness of said ceramic package between a top surface of the second region of the metal layer embedded in said ceramic package and a bottom surface of said conductive pattern formed on said ceramic package being smaller than a thickness of said ceramic package between a bottom surface of the second region of the metal layer and a bottom surface of said ceramic package.
2. The light-emitting apparatus as set forth in claim 1 , wherein:
the metal layer extends from the first region to the second region.
3. The light-emitting apparatus as set forth in claim 1 , wherein:
the first region is provided on said ceramic package.