Patent ID: 9640740
Date: 2017-05-02
CPC Classifications: H01L

Claim:
1. A LED lighting device, comprising a frame and at least one chip fixed in the frame, and further comprising a light emitting layer and a light condensing layer, wherein the light emitting layer wraps the chip, and the light condensing layer is arranged on the light emitting layer and configured for converging light passing through the light emitting layer, wherein the light condensing layer has a shape of a convex lens, an upper surface and a lower surface of the light condensing layer are convexities, and an upper surface of the light emitting layer is a concave corresponding to the lower surface of the light condensing layer, wherein the light condensing layer is formed by a packaging adhesive, and the light emitting layer is prepared by mixing phosphor powder with the packaging adhesive, and wherein the light condensing layer includes the packaging adhesive only.