Yang Zhenguo, a professor of materials science at Fudan University, demonstrated its newly developed double-sided flexible printed circuit board on the 29th. The method for manufacturing such a circuit board is called “printing-adsorption-catalytic addition methodâ€. This new process will provide a new way for the green, low-cost, large-scale, roll-to-roll manufacturing of flexible printed circuits and realize industrialization. This will eventually break the monopoly of high-end technologies and flexible electronic products in the sector that are mostly monopolized by foreign companies.
The printed circuit board is a carrier board for secondary packaging of all electronic components and realizes electrical interconnection between electronic components. At present, China is the world's largest producer of printed circuit boards. In 2013, the output value of printed circuit boards in China exceeded 180 billion yuan, accounting for about 39% of the world's total output value.
Industrial production of printed circuit board conductive lines, the most commonly used photolithography etching method. This process has the problems of high material consumption, multiple production processes, large discharge of waste liquids, and heavy environmental pressure, which cannot meet the development requirements of energy-saving, emission-reduction and efficiency-reducing consumption in today's manufacturing industry.
Yang Zhenguo introduced that his team developed this process with no waste, low pollution, good electrical performance, strong adhesion, and the ability to directly manufacture double-sided flexible circuit boards. The biggest advantage is that it is very green and environmentally friendly. It has much less pollution than etching and etching. Second, the process is simple. It can significantly reduce costs and make it more adaptable to the needs of industrial development. This is precisely the manufacturing and large-scale promotion of the bend. The premise of the roll screen. At the China International Industry Fair, Professor Yang's team will present their research.
Yang Zhenguo introduced that the basic material of this circuit board is only the simplest plastic film, so once it is put into production, the scope of application will be wider. This means that current electronic products can be made lighter and thinner, and a screen like a piece of paper in a sci-fi movie can be a reality.
It is reported that Prof. Yang’s research and exploration of flexible printed circuits is still deepening. "In the future, we must try to use organic materials to make chips, further reduce costs, reduce pollution, and ultimately achieve full-scale, full-print flexible electronic products." Professor Yang said.
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