At this year's high-tech LED lighting exhibition, Haotian Optoelectronics will bring 2 inch, 4 inch, 6 inch LED sapphire substrate, sapphire crystal rod, square substrate and various sizes of mobile phone screens and window films.
It is understood that the LED square substrate exhibited in this exhibition was successfully developed by Haotian Optoelectronics in 2013, which can improve the utilization rate by 30% in the MOCVD stage compared with the conventional substrate.
Zhang Gonglei, director of engineering technology of Haotian Optoelectronics, introduced that in the process of square substrate processing, there are several difficulties: crystal orientation control and positioning chamfer processing in crystal rod processing, BOW and LTV control during grinding and polishing It is difficult to control the particle size during the cleaning process. In addition, in the process of processing, according to product requirements, design new fixtures to use.
“The development of this technology, Haotian Optoelectronics may be the first at home and abroad. The products have reached and exceeded the customer's demand in terms of Thickness, TTV, Warp, BOW, LTV, etc.†Zhang Gonglei said, “2014 Square substrates have been shipped in small quantities and will grow significantly in the next year."
In addition, the company will also exhibit mobile phone application products. Tang Jie, marketer of Haotian Optoelectronics Market, introduced that mobile phone applications and watch covers are not very demanding on sapphire radial. The grinding is relatively complicated, but the price is better than LED substrate. "In addition to the substrate, we also sell sapphire crystal rods, the main customers are located in Taiwan and abroad."
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