[High-tech LED reporter Zhao Hui] Cost, heat dissipation and other issues have been plaguing the improvement of the cost performance of LED indoor lighting products, and the emergence of high-voltage chip solutions is expected to become a low-cost and high-efficiency solution for lighting fixtures.
Recently, domestic high-quality LED chip manufacturer Huacan Optoelectronics (300323.SZ) has launched a series of high-voltage chips for white light, including 9V, 12V, 24V and other chip products, of which 12V high-voltage chips have a luminous efficiency of 20mA driving current ≥ 140lm/W.
"High-voltage chips are connected in series at the chip end, and the reliability is better guaranteed. The interconnects between the trenches, the insulating layer and the chips are the main innovations in the technology of the high-voltage chip." Dr. Wang Jiangbo, head of R&D, Huacan Optoelectronics These technical improvements indicate that the high-voltage chip products require significantly lower drive currents than conventional chips at the same output power, and can significantly reduce AC-DC conversion efficiency losses.
When talking about the advantages of high-voltage chips, Wang Jiangbo said that the high-voltage chip saves some of the process of solid crystal and wire bonding, saving the cost of gold wire and improving the efficiency of equipment use in the packaging plant. For the application-side luminaire, the RC can be used to reduce the power supply cost and systematically save material costs.
"High-voltage chips will become a low-cost, high-efficiency solution for bulbs and fluorescent tubes." Wang Jiangbo told the "High-tech LED" reporter that high-voltage chips can bring about an effective reduction in the cost of LED lighting, and may be a kind in the future. Market trends, but the technology of high-voltage chips is still being upgraded. In the specific segmentation application market, different high-voltage solutions can be developed to meet different segmentation needs.
Previously, Vice President of Huacan Optoelectronics, Bian Difei, said in an interview with "High-tech LED" that "for flip-chip and high-voltage chips, Huacan has been paying attention early and has carried out related technical reserves. Technically, There is no difficulty for Huacan."
It is understood that the current high-voltage chip products of Huacan Optoelectronics are in the stage of mass production.
Biandi Fei said that with the development of the market, the demand of customers has gradually shown a diversified trend. Product categories, technical requirements, delivery time limits, etc. all test Huacan's comprehensive capabilities. The key now is to look at the needs of downstream application companies. As long as there is demand from downstream companies, Huacan Optoelectronics can do its best to satisfy customers.
With the rapid improvement of the cost performance of LED lighting, the lighting demand has been further released, which directly drives the improvement of the production and sales rate of the upstream chip and the midstream package.
High-voltage chips have also become a new focus for chip companies. In the Taiwan region, Jingdian and Yuyuan started early in flip-chip and high-voltage chips. Domestic Sanan Optoelectronics and Dehao Runda have also begun to launch small-scale goods.
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