Patent ID: 7427784
Filing Date: 2008-09-23
Classification: C09K,H01L,H05B

Abstract:
1. A light emitting diode (LED) package unit, comprising: a substrate, having a concave; a LED chip, disposed in the concave, the LED chip comprising a top-face, a bottom-face for jointing with the substrate, and at least two chip-electrodes disposed on the top-face, the LED chip emitting light of a first wavelength; at least two electrodes, disposed on the substrate; at least two wires, respectively connecting one of said chip-electrode with one of said electrode; a gel, disposed to seal the LED chip and said at least two wires; and a first wavelength-converting material, doped within the gel, the first wavelength-converting material comprising Sr—Si—O—N:Eu, wherein the first wavelength-converting material absorbs light of the first wavelength and emits light of a second wavelength longer than the first wavelength.