As the sales of LEDs can't keep up with the changes in cost, the market in this area has been greatly constrained, which has caused a heavy blow in this market. This is the biggest bottleneck in the LED industry. Therefore, the discussion on improving the cost of LEDs has not stopped. For the improvement of LED cost, some experts have recently proposed new industrial thinking to improve LED cost and process. LED is recognized as the 21st century green lighting, featuring high energy-saving life, long-term change, and high-tech, high-tech, and LED lighting. Industry hotspots with market potential. If one-third of the current incandescent lamps are replaced by LED lights, the country can save 100 billion kWh of electricity every year, equivalent to one year of power generation in the Three Gorges Project.
At present, in the LED process, although the sapphire substrate is challenged by Si and GaN substrates, considering the cost and yield, sapphire still has advantages in the past two years, and it is foreseeable that the development direction of the sapphire substrate is large size and patterning. (PSS). Since the hardness of sapphire is second only to diamond, it is very difficult to reduce and flatten the surface of the sapphire. In the gradual exploration, the industry has formed a set of roughly the same process for thinning and flattening the sapphire substrate.
Due to cost and electrical considerations, many large manufacturers have begun to try to use non-sapphire substrate technology to create LEDs. Well-known manufacturers include TSMC solid-state lighting (TSMCSSL), and the combination of Bridgelux and Toshiba in the United States. In recent years, some economically developed countries in the world have launched a fierce technical competition around the development of LED. The United States has invested $500 million since 2000 to implement the National Semiconductor Lighting Program. The Interim Measures for the Administration of Financial Subsidy Funds for Efficient Lighting Products Promotion, which was implemented by the Ministry of Finance in China in 2008, included semiconductor LED lighting.
Currently, manufacturers using non-sapphire substrate technology to build LEDs include TSMCSSL, which has been mass-produced recently, and the combination of Bridgelux and Toshiba. This time LEDforum, from the US equipment manufacturer Veeco, talked about the progress of Gan-on-Si, and expects 8-inch equipment to be the new focus of the future market. In addition to the Gan-on-Si, the German equipment manufacturer Aixtron also introduced MOCVD equipment to build power supply units with higher temperature processes, which have been purchased and cut into the power supply market. Japanese equipment maker Dayang Rizin also launched Gan-on-Si's MOCVD equipment products and highlighted the niche market.
The top ten manufacturers of LED lighting revenue have already included 31 market share, and the remaining 70 LED lighting markets have thousands of manufacturers worldwide. Since 2012, LED commercial lighting suppliers have increased, resulting in a significant drop in prices, coupled with the growth of commercial buildings in 2012, including office buildings, stores, warehouses and hotels, and increased demand for LED commercial lighting. On the other hand, the luminaire design alliance has set specifications and requirements for 4-foot lamps. In response to the rise of the LED commercial lighting market, the United States has the opportunity to replace Japan as the next major market for LED lighting.
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