China Printed Circuit Association the CPCA, vice chairman and environmental clean club president Chen Rongxian
Recent decades, we printed circuit board industry from scratch, from small to large, rapid development. Printed circuit board industry output value from 2006 to maintain output, the output value of the status in the world. According to the report of the the famous global PCB market analyst Prismark company in March 2012, the output value of the global printed circuit board 2012 to $ 54.31 billion, printed circuit board production value of approximately $ 21.636 billion, accounting for 39.8% of the world.

From a macroeconomic point of view, China's economy as a whole have come down than expected, we see now is no longer 9%, 8% growth, but the growth of about 7.5%. In 2013, the national economy is still likely to remain in growth of about 7.5%, a level of medium-sized. Decline in GDP growth, CPI is also stable at around 3 percent. Fiscal revenue digit growth for the first time, according to analysis of the Chinese Academy of Social Sciences, the Bank this year's "money supply" will still be tight.

In the first plenary meeting of the new session of the State Council, Li Keqiang, for the economic development of the situation at home and abroad made a careful analysis, and reiterated a "steady" and "into" two-pronged. In Li Keqiang, into the "key to rely on economic restructuring," to build an upgraded version of the Chinese economy. " He was very serious participants said: "Chinese economy to today not transition we unsustainable". By the same token, pcb copy board in this highly competitive market environment, a lot of uncertainties and destabilizing factors, some even very difficult moment look at how to sustainable development pcb copy board? Natural selection, and how the transformation is a test of our wisdom.
Pcb copy board homogenization speed up the transition to innovation

Role as the incoming inspection of raw materials required for the production of multi-layer PCB board copper clad laminates, the quality is good or bad will directly affect the production of multi-layer PCB board. By metallurgical microscope 

Recently, the radio station of the original national radio and television movie Administration ccbn (China International Broadcasting Network Exhibition) Organizing Committee co-sponsored, co-host of "Broadcasting" magazine and cable TV Technology magazine VII session of digital TV the summit and policies Publicizing will be held in Beijing. At the meeting, said the relevant departments will take a number of measures to actively promote digital TV promotion, research and formulate a unified terrestrial digital TV receiver identifies.

The mechanism of the circuit board layered circuit board endothermic, the different expansion coefficients between the different materials forming the inner stress, if the resin with a resin, a resin with a copper foil adhesive force enough to resist the internal stress will be generated stars layer, the solution to the hierarchical idea is: 1. Production process control as much as possible to ensure that the board has the best resistance to stress capacity: 2. Use the superior performance of the material to reduce internal stress. The article hope through research, the dual constraints of cost and quality, to find the best solution to solve the problem of delamination, with the lowest cost. The idea is to proceed from the study hierarchical experimental design factors layered material selection, circuit board manufacturing process control to the whole process of the circuit board assembly, system analysis. This research project costing 25 million cost of the test material, which lasted more than three months, and ultimately enhance the competitiveness of the company's point of view, from a cost and quality control, propose solutions layered three options. The experimental results are applied to the practice of Company A, good economic returns, reduce the cost of customer complaints a month about 30 million, a decrease of approximately $ 800,000 of the cost of waste, to obtain more than the expected benefits.

Lines MILL procedures for exposure. To check the exposure box before exposure polyester film and the bezel is clean, if not clean should be timely and anti-static cloth to wipe clean, and then open the the exposure machine's power switch, and then turn on the vacuum button to select the Exposure program, shaking exposure shutter not started before the exposure, exposure machine should be allowed to air exposure five times, the role of the "empty exposure enables the machine to enter the saturated state, the most important is the UV lamp energy into the normal range . If you do not "empty exposure the exposure lamp energy may not have access to the best working condition. Will make the printed circuit board in the exposure problems. After the empty exposure "five times, exposure machine has entered the best working condition before the camera bottom plate position to check the quality of the bottom plate is qualified. Check the bottom plate on the membrane surface if there is pinhole and the exposed portion of the light, the graphics are consistent with the printed circuit board, because it will check photographic Diban avoided because some unnecessary reason the printed circuit board rework or scrap.

Basic knowledge of the flexible circuit board



Not continuous deflection of such multilayer flexible circuit boards made of soft insulated information with soft materials, soft insulating substrate, a multilayer circuit board the finished product required shape. But due to the limitations of the electrical design, such as to the desired conductor resistance requirements with a thickness of the conductor, or for the desired impedance or capacitance requirements in thick insulating isolation between the signal layer and the ground layer, therefore, the waste application when it was forming. Term "moldable defined for: the multilayer flexible circuit board member shape having made the required capacity, and in the application can not be deflection. Avionics unit internal wiring applications. At this time, the claim stripline or the conductor resistance of the three-dimensional design space is low, the capacitive coupling or circuit noise is minimal, and the interconnection end portion can be smoothly curved in a 90 ° item polyimide film made of a multilayer flexible circuit board B to achieve this The colors of the wiring task can be further divided into a plurality of multilayer flexible polyimide film high temperature, flexibility, and good electrical and mechanical characteristics and the total of all interconnections of the member cross-section in order to achieve this, which traces Partly The circuit member, and the adhesive tape together to form a printed circuit beam.

Circuit board layout techniques

Some special components have special requirements, placement and routing know. Example, the LOTI and APH used analog signal amplifier, analog signal amplifier to have a smooth power requirements, small ripple. The analog signal as far away as possible from the local power devices. OTI board, local small signal amplification also specifically plus a shield to shield off the stray electromagnetic interference. ECL technology, the the NTOI board GLINK chip is used in large power consumption, severe heat, the heat dissipation problem required special consideration must be carried out in the layout, the use of natural cooling, should GLINK chip on the air circulation is relatively smooth place, and the heat comes out of other chips can not constitute a big impact. If the board is equipped with a horn or other high-power devices, it is possible to cause serious pollution that should be taken seriously enough power.

Circuit board production in the next few years, China will account for 45% -50%




PCB Industry Association (CPCA), vice chairman and secretary general Wang Longji 14 at the 2013 Shanghai International Expo press briefing on circuit board production and sales in 2012 accounted for 40 of the total global production % is expected in the next three to five years will be close to 45% -50% of the global.

The circuit board is one of the important parts of the electronics industry, the role of support and connection to the electronic components. China CPCA, according to statistics, in 2006 China's PCB output value has surpassed Japan to become the world's first. Despite the scale of the industry accounts for about four percent of the world, but China's PCB industry in the overall technical level, still lags behind Japan, China, Taiwan, South Korea, the United States, Europe and other places. "Since local enterprises in China continues to grow and the overall upgrading of technology is expected to last three years of production and sales will be close to 45% -50% of the world, and among the most advanced in the world", said Wang Longji .