On April 24, Hua Can Optoelectronics (300323.SZ), Secretary-General Ye Aimin said in an investigation that the monthly production capacity of Wuhan's graphic substrate (PSS) has reached tens of thousands of pieces, and the self-sufficiency rate has reached more than half.
Ye Aimin denied the fact that the Suzhou subsidiary produced PSS substrates. Since the Suzhou subsidiary produced 4-inch epitaxial wafers, the corresponding 4-inch epitaxial wafers had higher requirements on the quality of PSS substrates. The 4-inch PSS manufacturing level.
In the company's 2013 annual report, the expenditure on the research and development of the graphic sapphire production process for high-brightness LEDs was 3.812 million yuan at the beginning of the year. The increase in the current period was 1,900,200 yuan, and the ending balance was 5,602,200 yuan. It can be seen that the company is more active in investing in PSS substrates.
It is understood that the patterned sapphire substrate (full name of the Pattern Sapphire Substrate) refers to the substrate sheet after the surface pattern roughening treatment on the sapphire polished substrate sheet, which can improve the light extraction efficiency.
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