Patent ID: 9166116
Filing Date: 2015-10-20
Classification: F21K,F21V,F21Y,H01L

Abstract:
1. A light emitting device, comprising: a sapphire substrate, having a support surface, the thickness of said sapphire substrate being greater than or equal to 200 μm; and at least one light emitting diode chip comprising a plurality of light emitting surfaces, disposed on said support surface of said substrate, one of said light emitting surfaces and said support surface forming a first main surface; wherein a light emitting angle of said light emitting diode chip is wider than 180°, and the light emitted by said light emitting diode chip penetrates into said substrate from said support surface and at least partially emerges from a second main surface corresponding to said first main surface of said sapphire substrate, the transmittance of said sapphire substrate is greater than or equal to 70% when the wavelength of the light is greater than or equal to 420 nm and less than or equal to 470 nm.