LED (Light-Emitting diode) multi-chip module and manufacturing method thereof

Abstract

The invention provides an LED (Light-Emitting diode) multi-chip module which comprises a copper base plate with a reflecting layer, a mounting frame and a plurality of LED chips, wherein the mounting frame is fixedly arranged on the copper base plate and internally provided with a step-shaped through cavity; the lower cavity section of the step-shaped through cavity is combined with the surface of the middle part of the copper base plate to form a low cavity; the parts, adjacent to two borders, in the mounting frame are respectively provided with an electrode groove; the LED chips are arranged in the lower cavity of the mounting frame in longitudinal and horizontal directions, bound at the partial copper base plate at the bottom of the lower cavity and connected with electrode plates embedded in the mounting frame through gold wires; phosphor powder silica gel is distributed at the peripheries and tops of the LED chips; and the mounting frame is filled with a transparent silica gel layer on the phosphor powder silica gel layer, so that the LED multi-chip module can be seamlessly and tightly adhered to the flat bottom surface of a flat-bottom-surface solid lens. The LED multi-chip module is compact in structure and waterproof and has a protection grade higher than IP67; and a reflecting layer is sprayed on the inner surface of the step-shaped through cavity in the mounting frame and is matched with the reflecting layer on the surface of the copper base plate, so that the optical energy loss of an LED is greatly reduced.

Description

technical field [0001] The invention relates to the manufacturing technology of a light source assembly for high-power LED street lamps, in particular to an LED multi-chip module and a manufacturing method thereof. The LED multi-chip module and the solid lens body are tightly bonded without gaps to form a primary light source with a single lens, which can directly form the batwing rectangular light field required by the street lamp specification. Background technique [0002] At present, the light distribution of the rectangular light field of LED street lamps, whether it is a granular combination or a modular combination, the light distribution of the lens adopts multiple lenses or multiple lenses combined into one lens for light distribution, and some even use only The transparent body of the lower shell of the lamp is used as a light distribution lens. The reflection method of the lamp light source is the same as that of the traditional lamps, which follows the tradition...

AI Technical Summary

Problems solved by technology

[0004] Using the LED multi-chip module to directly distribute light through the astigmatism lens can form the rectangular light field required by the street lamp, but the existing LED multi-chip modules cannot be tightly attached to the solid lens body without gaps, resulting in LED multi-chip modules. With the light distribution lens, at least 20% of the light energy is lost due to the refraction of the air in the middle, and the light energy utilization rate is not ideal

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