| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve emission luminance for supplied energy by suppressing optical loss and color shift due to a change in an optical length. <P>SOLUTION: In a light-emitting layer 1 being a blue light-emitting diode, a metal substrate 2 is stacked on one surface in a thickness direction, and a transparent electrode 3 is stacked on the other surface. A stacked body of the light-emitting layer 1, the substrate 2 and the transparent electrode 3 is surrounded by a mold frame 4. Also, a bonding wire 7 is connected to the transparent electrode 3. One end of the mold frame 4 protrudes from the light-emitting surface of the light-emitting layer 1, and a light transmissive layer 6 made of a light transmission material is filled in a recess 5 surrounded by the light-emitting layer 1 and the internal peripheral surface of the mold frame 4. The light transmissive layer 6 is an optical color conversion material in which a phosphor excited by a blue light and emitting a yellow light is dispersed in the light transmission material, and a white light being a color mixture light of the blue light and the yellow light is extracted from the light transmissive layer 6. <P>COPYRIGHT: (C)2007,JPO&INPIT |
