[Source: Gaogong LED's "LED Good Products" December issue of the 60th issue | Xu Chaopeng] This article temporarily takes the COB light source price to occupy a relatively high chip, gold wire and production process, to make a simple explanation. I hope that through the series of articles, I will uncover the mystery of the price gap of COB light sources.
In the current COB light source market, high-end products can be sold for more than 1 yuan per watt, the price range of common products is about 5-6 hairs, and some COB light sources in Zhongshan can even reach the "limit price" of 3-4 hairs. The market situation is so mixed, and as consumers, when choosing to purchase light source products, we must know where the cost difference is.
Through the investigation of the reporter's investigation, in the commonly used COB light source products, the proportion of the price in the order is: 1, chip; 2, gold wire; 3, glue; 4, bracket. In addition, the substrate material is also a part of the price of COB light source.
Due to the limited space, this article will briefly discuss the factors that determine the cost in the production process due to the relatively high number of chips and the high frequency of gold wire materials in the industry. As for glue, stents and substrates, follow-up reports will be added. I hope that this series of articles can be used to reveal the mystery of the price difference of COB light source.
Although the LED industry has undergone years of development, the fact that it still cannot be changed is that the chip is still the bulk of the price of light source. According to the reporter's investigation, the current chip accounts for more than 50% of the cost of light source, and some may even be close to 70%. At the same time, with the general improvement of the quality of domestic chips, it has been able to replace imported chips in some areas.
"At present, the light source products we produce are mainly domestic chips, but the chips of Taiwanese manufacturers are also used in some special series. Compared with domestic chips, the price of imported chips will be higher, generally it will be expensive to 10- 20 points." Zhang Lei, director of strategic research and development of Shenzhen Jingtai Optoelectronics Co., Ltd. told reporters.
“Taking the COB products widely distributed in the market as an example, we use the chip of the 1734 model. The unit price of this chip in the market is about 135 yuan / K. With the same size and the same light efficiency, Domestic chips, the price is about 90-100 yuan / K." Zou Yiming, general manager of Shenzhen Xinyue Photoelectric Co., Ltd. told reporters.
At the same time, the reporter learned that the domestic chip is cheaper than the imported chip, but it does not mean that it will fall under the product parameters. In some areas, imported chips are even better than domestic chips in performance.
"Take the example of the domestic Sanan chip. According to our test results, its small and medium power chips are not worse than Taiwan's wafers, but in terms of high power, compared with the maturity of Taiwanese chips, it is still slightly There is a lack of. From the previous situation we used domestic high-power chips, many customers have reported that its product stability can not reach the level of imported chips like Jingyuan and Puri." Zhang Lei said that the current stage The photoelectric small and medium power light source is mainly made of domestic Sanan and Huacan chips. At the same time, under the premise of high-power light source and customer requirements, they will also adopt imported chips.
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In addition, the reporter also learned that the current LED chip industry, there are also the difference between square film and film, which is also a major factor in the current price difference between light source products.
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