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Before the printed circuit board appears ,electronic components of interconnection relied on wires connected directly and form a complete circuit.Now, the circuit of bread board only as an effective tool of experiment.Printed circuit board in the electronics industry has become the dominant position.
At the beginning of the 20th century, in order to simplify the production of electronic machine,reduce the wiring between the electronic components, reduce the production cost an so on,began to study in the printing way instead of the wiring method.In thirty years,have engineers continuously put forward in the insulation substrate to metal conductor wiring.In 1925, American Charles Ducas in insulating substrate printed circuit design
is the most successful,then electroplating, successfully established a conductor wiring.
Until 1936, austrians Paul Eisler Delivered a foil membrane technology in the UK.He adopted the printed circuit board in a radio device.In Japan, 宫本喜之助 put forword spray-up wiring method ("メ タ リ コ ン blowing wiring method (chartered 119384)" Successful apply for a patent.Paul Eisler method is most similar to today's circuit board technology, this kind of practice is called subtractive method, the method is to remove unwanted metal;And Charles Ducas,宫本喜之助 is only with the required wiring, called addition process.Even so, because the electronic components calorific value is big, the finished board with the two method is also difficult to cooperate to use, so that no formal and practical, but make printed circuit technology further.
In 1941, the United States in the talc on the lacquer on copper paste for wiring,to make proximity fuze.
In 1943,the technology is widely used in military radio by American .
In 1947,epoxy resin start to be used in the manufacture board,the NBS began to research on printed circuittechnology to form coils,capacitors, resistors and other manufacturing technology.
In 1947,American officially recognized the invent and use for business .
Since the 1950 s,a lot of low calorific value of transistor replaced vacuum tubes,PCB technology began to be widely used。At that time ，etched foil membrane technology is mainstream.
In 1950,the Japanese use glass substrate with silver paint for wiring; and phenolic resin is made of paper phenolic substrates (CCL) with copper foil on the wiring.
In 1951, with the arrival of polyimide, the heat resistance of resin make further, also made the polyurethane amide base board .
In 1953,Motorola has developed a double panel plating through hole method. This method is also applied to multi-layer circuit boards in the late.
After 10 years of printed circuit board is widely used, in the '60 s its technology is increasingly mature.And since the Motorola double-sideboard, multilayer printed circuit boardbegan to emerge,the ratio of the wiring and the base area besome more improvement.
In 1960, v. Dahlgreen used printed circuit metal foil plastic film on the thermal plasticity, build a flexible printed circuit board.
In 1961, the United States the Hazeltine Corporation referred the plating through hole method, making the multilayer PCB.
In 1967, has published one of the layer method——"Plated - up technology".
In 1969, FD - R with polyimide flexiblemanufactured printed circuit board .
In 1979, Pactel published one of the layer method——"Pactel method".
In 1984, NTT developed method of thin film circuit "Polyimide cooper".
In 1988,the Siemenscompany developed Microwiring Substrate to produce add layers printed circuit board .
In 1990, IBM developed increasing layer of "Surface" (Surface Laminar Circuit, SLC) printed Circuit board.
In 1995, panasonic developed add layer printed circuit board——ALIVH .
In 1996, Toshiba developed added layer printed circuit board——Bit .
At the end of 1990, many add layers solutions have been proposed, add layer printed circuit board are also become practical used officially , until now.
Development
China has the advantage of industry distribution, the cost and market advantage, has become the world's most important production base of printed circuit board.
In recent years, China's PCB (Printed Circuit Board, PCB) manufacturing industry is developing rapidly, both the total output value and the total output are the world's first.
In 2010, there are 908 PCBmanufacturing enterprises above designated size in China.Assets total 216.176 billion RMB,achieve sales revenue of 225.796 billion RMB,year-on-year growth of 29.16%; Gross profit of 9.403 billion RMB, up 50.08% from a year earlier.
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