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led生产工艺,led的制作流程全过程（LED production process, LED production process, the whole process）.doc

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led生产工艺,led的制作流程全过程（LED production process, LED production process, the whole process）

led生产工艺,led的制作流程全过程（LED production process, LED production process, the whole process） This article is contributed by cdled001 DOC documents may experience poor browsing on the WAP side. It is recommended that you first select TXT, or download the source file to the local view. LED production process, production process, LED production process of the whole process 1.LED chip inspection by microscopy, mechanical damage and pitting pit or material surface (lockhill chip size and electrode size is in accordance with the process requirements of electrode pattern is complete the expansion of the 2.LED film because the LED chip after dicing still closely arranged space is very small (about 0.1mm), is not conducive to the process of operation. We use the expansion machine to expand the film on the bonding chip, and the LED chip spacing is stretched to about 0.6mm. Manual expansion can also be used, but it is easy to cause chip waste, waste and other undesirable problems. 3.LED glue points in the LED bracket at the corresponding place with silver glue or insulation glue. For GaAs, SiC conductive substrates, red, yellow, yellow green chips with back electrodes are employed. For sapphire blue and green LED chips with sapphire insulation substrate, insulation chip is used to fix the chip The technical difficulty lies in the dispensing quantity control, in the colloid height, the dispensing position has the detailed craft request. Because of the strict requirements for the storage and use of silver glue and insulation glue, the awakening, mixing and using time of silver glue are the matters that must be paid attention to in the process. Preparation of 4.LED glue and glue glue is used instead, by preparing the silver glue to glue machine on the back of the LED electrode, and then put back with silver colloid LED installed in the LED bracket. The efficiency of preparation is much higher than that of dispensing, but not all products are suitable for sizing process. 5.LED hand thor