Patent ID: 7646034

Claim:
A surface mount type light-emitting diode package device, comprising: a lead frame; at least one light-emitting diode chip disposed on the lead frame; and a light-pervious encapsulation layer disposed on the lead frame and encapsulating the light-emitting diode chip, wherein, the encapsulation layer has a bottom portion contacting the light-emitting diode chip and a top portion contacting an environmental ambiance, the encapsulation layer comprises at least one encapsulation material and at least one material, the at least one material has a refraction index different from the encapsulation material and is distributed in the encapsulation material in a way such that the refraction index of the encapsulation layer is gradually reduced from the bottom portion upward to the top portion of the encapsulation layer, and the distribution density of the at least one material present in a surface structure of a top surface of the encapsulation layer is higher than the distribution density of the at least one material present in the portion of the encapsulation layer immediately therebeneath.