Keyword: printed circuit board, history of PCB
Before appears in the printed circuit board, electronic components of interconnection between relied on wires connected directly and form a complete circuit. Bread now, circuit board was just as effective experimental tool, and printed circuit board in the electronics industry has become the dominant position.
At the beginning of the 20th century, people in order to simplify the production of electronic machine, reduce the wiring between the electronic components, reduce the production cost advantages, and began to study in the printing way instead of the wiring method. Thirty years, constantly have engineers in insulating substrate to metal conductor wiring. America, which is one of the most successful 1925 Charles Ducas in insulating substrate printed circuit design, again by electroplating, successfully established a conductor wiring.
Until 1936, Austrian love, Paul (Paul Eisler) published a foil membrane technology in the UK, in a radio device inside the printed circuit board; In Japan, palace this pleased help to spray the attached wiring method "メ タ リ コ ン blowing wiring method (chartered 119384)" success to apply for a patent. And Paul in both Eisler method and printed circuit board is most similar to today, this kind of practice is called subtractive method, is to remove unwanted metal; And Charles Ducas, palace this pleased help it is only with the required wiring, called addition process. Even so, but because the electronic components calorific value is big, the substrate is also difficult to cooperate to use, so that no formal and practical, but also make printed circuit technology further.
In 1941, the United States in the talc on the lacquer on copper paste for wiring, to make close to the fuse.
In 1943, americans will be extensive use of the technology in the military radio.
In 1947, started as a manufacturing base epoxy resin plate. The NBS began to research the formation technology of printed circuit coils, capacitors, resistors and other manufacturing technology.
In 1948, the United States formally recognised the invention used for commercial purposes.
Since the 1950 s, a lot of low calorific value of transistor to replace the position of vacuum tubes, printed circuit board technology began to be widely used. At a time when with etched foil membrane technology for the mainstream.
Source: //www.seekic.com
