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According to Ji Yong, chairman of Haotian Optoelectronics, the company can also ship 4 inches and 6 inches in addition to 2 inch square substrates. Because the area of ​​the square substrate is larger than the area of ​​the circular substrate of the same size, the sapphire manufacturer's process is more demanding, and has already been supplied to Taiwan chip manufacturers in small quantities.
The square substrate has higher requirements for BOW and LTV control during the grinding and polishing process because of the crystal orientation control and positioning chamfering during the processing of the ingot. At the same time, the granularity of the cleaning process is more difficult to control. In addition, in the processing process, it is necessary to design a new fixture according to the product requirements.
Haotian photoelectric 2 inch LED square substrate has the following advantages: Thickness=430±10um; TTV<4um; Warp<8um; -6≤BOW≤0um; LTV<1.5um(8*8); CA +/-0.05; CM 0.2 +/- 0.05; cleaning particle size is less than 50.
For the finalist, Ji Yong said that although he was a third finalist, he was still very happy. This is an affirmation of Haotian Optoelectronics. The company's current production capacity equivalent to 2 inch substrate capacity has exceeded 1 million pieces / month, of which 165kg crystal growth furnace accounted for 10%, and the remaining crystal growth furnaces are also 115kg. In the future, the company will continue to maintain the business philosophy of synergistic development of LED and non-LED dual-field. The current market conditions will make Haotian Optoelectronics confident in the performance of next year.
Next, the top three valid votes for each award (including juxtaposition) products will be shortlisted for the 2014 (5th) High-tech LED Golden Globe Awards, which will be finalist in the expert judges stage. The organizing committee will give the period from October 15th to 31st. The expert judges will send the ballots to vote offline, and the judges of the expert judges will determine the final winners of the Golden Globe Awards.
A list of expert judges: http://
On the evening of December 13, the Golden Globe Awards will be announced on the spot and a grand award ceremony will be held. At the same time, the 2014 high LED annual meeting, which has attracted much attention from the industry, will be held on December 12-13, 2014 at the Dongguan Guanlan Lake Dongguan Club. This high-tech LED annual meeting, standing at the turning point of historical development, invited industry entrepreneurs to mention the industry development keywords from the three directions of “transformationâ€, “upgrade†and “futureâ€, and elaborated on the viewpoint of industrial elites. 
[Text|High-tech LED reporter Long Zonghui] For two consecutive Golden Globe Award winners, Guizhou Haotian Optoelectronics was once again nominated for the Golden Globe Award for its new 2-inch square substrate. Compared with the ordinary 2-inch circular substrate, the square substrate can maximize the MOCVD production capacity, and the capacity utilization rate is increased by at least 30%, and the chip cost is naturally more advantageous.