All-inorganic SMD LED packaging method and structure

Abstract

The invention discloses an all-inorganic SMD LED packaging method. The method includes the following processes that firstly, a support is manufactured, secondly, dehumidification, baking and plasma cleaning are conducted on the whole ceramic support, thirdly, wafer expanding is conducted on a flip chip, fourthly, a ceramic substrate is baked, fifthly, a glass cover plate is closed, and a second metal layer and an LED support are welded in a seamless mode, and sixthly, cutting is conducted. The first process particularly includes the following steps that the ceramic substrate is prepared; the ceramic substrate with a circuit is manufactured; the glass cover plate is manufactured; the edge of the ceramic substrate obtained through the twelfth process and the edge of the glass cover plate obtained through the thirteenth step are ground respectively; a first metal layer is arranged around the ceramic substrate, the second metal layer is arranged around the side, covering the ceramic substrate, of the glass cover plate, and then a metalized ceramic substrate frame and a glass cover plate frame which have high heat conduction performance are formed; a groove of the ceramic plate is plated with silver; a metal heat sink body and a metal bonding pad are arranged. In the fifth process, LED device indirect high-temperature heating rapid inorganic material airtight packaging is achieved.

Description

technical field [0001] The present invention relates to an LED encapsulation method, in particular to a method and structure of a chip LED package. All materials of the chip LED package are made of inorganic materials, that is, an all-inorganic chip LED package structure. Background technique [0002] SMD LED light sources are widely used in the field of lighting. At present, organic materials such as silica gel and epoxy resin are used to seal and protect the chip in LED packaging. Poor performance, poor anti-aging performance, easy to age and deteriorate in ultraviolet environment, using traditional silicone material packaging, silicone materials are prone to failure due to the influence of water, light, heat and other factors under long-term service conditions, resulting in The sharp attenuation of the luminous flux and radiation flux of the device may even cause the device to fail. Therefore, organic materials are not suitable for packaging ultraviolet LED devices and d...

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Problems solved by technology

[0002] SMD LED light sources are widely used in the field of lighting. At present, organic materials such as silica gel and epoxy resin are used to seal and protect the chip in LED packaging. Poor performance, poor anti-aging performance, easy to age and deteriorate in ultraviolet environment, using traditional silicone material packaging, silicone materials are prone to failure due to the influence of water, light, heat and other factors under long-term service conditions, resulting in The sharp attenuation of the luminous flux and radiation flux of the device, and even lead to device failure

Therefore, organic materials are not suitable for packaging ultraviolet LED devices and devices used in harsh environments with high temperature and high ultraviolet lamps. Therefore, it is necessary to choose a high-aging-resistant packaging. One of the ways is to use inorganic packaging, but currently inorganic sealing The packaging technology is difficult, the main reason is the limitation of temperature and the restriction of the comprehensive performance of materials

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