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"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.
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.
“For example, the same brand of chips, there will be positive and partial band products in the production process. We will use white light source, and will use blue light band between 450nm and 460nm, but some manufacturers will also buy some partial bands. Products such as the 445nm-450nm band, or some high-voltage and leakage of chips for production." Zou Yiming said that under normal circumstances, such chips will not be procured at normal prices, and at most Half the price of a normal chip. 
The price puzzle of COB light source - chip
[Source: Gaogong LED's "LED Good Products" December 2014 issue (total 60th issue) | Xu Chaopeng] Although the LED industry has undergone years of development, the fact that it still cannot be changed is that the chip is still the price of light source. Big head. 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.