PCB Technical - The trend of SMT chip processing flexible FPC

With the continuous advancement of the society's requirements for informatization and intelligence, and it has almost penetrated into all walks of life, as mentioned in the article, it has been difficult to find slightly complicated electronic products that do not use FPC flexible circuit boards and FPC components.

The country will also further increase investment in the construction of electronic informatization in various fields, and accelerate the pace of electronic informatization construction in increasing fields, which will surely promote the development of FPC flexible circuit boards and FPC components. At the same time, 5G affairs have been fully deployed nationwide, which will also bring new development opportunities for the flexible printed circuit board profession.

The advantages and disadvantages of PCB flexible circuit boards

advantage:

(1) It can be bent, wound, and folded freely, can be organized according to the space layout requirements, and moved and elastically in three-dimensional space, and then reaches the integration of component installation and wire connection;

(2) The use of FPC circuit boards can greatly reduce the volume and weight of electronic products;

(3) The FPC flexible circuit board also has outstanding heat dissipation and solderability, easy assembly and connection, and low cost. The planning of soft and hard combination also compensates for the PCB flexible board base material in the component load. Slightly lack of talent.

shortcoming:

(1) One-time initial cost is high

Because flexible PCB boards are planned and manufactured for special applications, the initial circuit planning, wiring and photographic masters require higher costs. Unless there is a special need to use flexible PCB, it is usually best not to use it when it is used in a small amount.

(2) It is difficult to modify and repair flexible PCB boards.

Once the flexible PCB board is made, it must be changed from the base map or the programmed light drawing program, so it is not easy to change. The surface is covered with a protective film, which must be removed before repair and restored after repair, which is a relatively difficult task.

(3) The size is restricted

When flexible PCB boards are not yet popular, they are usually made by batch process, so they cannot be made very long and wide due to the constraints of the size of the production equipment.

(4) Incorrect operation is easy to damage

Improper operation of the assembly and connection personnel can easily cause damage to the flexible circuit, and its soldering and rework require trained personnel to operate.

Application of flexible FPC circuit board

The demand trend of light, thin, short and small electronic products has made FPC circuit boards quickly joined the military and transferred to civilian use and to consumer electronic products. In recent years, almost all high-tech electronic products that have emerged in recent years have adopted flexible PCB circuit boards. .

Japanese scholar Kenshi Sakura said in the book "High-Density Flexible Printed Circuit Boards": Almost all electrical products use flexible PCB circuit boards. It is difficult to find slightly complicated electronics that do not use flexible circuit boards. Product.

Market prospects of flexible FPC circuit boards

(1) Mobile phone shopping mall. As far as mobile phones are concerned, FPC flexible boards are mainly used as parts for signal connection such as folding and rotating in mobile phones. Nowadays, more than 3 pieces of FPC flexible boards are used in general mobile phones., Driving the demand for FPC flexible boards. FPC flexible boards can be used in functions such as mobile phone bending, LCD modules, camera modules, buttons, side buttons, antennas, and battery control.

At present, FPC flexible boards are most used in the HingePart of mobile phones. The common ones are folding, sliding, clamshell, and three-dimensional rotating bodies. Most of them are double-sided or multi-layer FPC flexible boards. The highest output value in mobile phone use.

As for the button FPC flexible board, camera module, antenna or battery FPC flexible board, it is a selective plan for mobile phone planners. Under the situation that the above-mentioned selective functions will gradually be included in the mobile phone standardization plan, it will help to increase the amount of FPC flexible board.

The 2018 Communication Operation Industry Calculation Bulletin issued by the Ministry of Industry and Information Technology shows that in 2018, the country's telephone users increased by 90.326 million, bringing the total to 1.536 billion, an increase of 6.8%, a decrease of 15 percentage points from the previous year. In the meantime, the number of mobile phone users increased by 7896.3, bringing the total to 2.82 billion. The penetration rate of mobile phone users reached 2.1 units/100 people, an increase of 4.7 units/100 people over the previous year. The content of FPC flexible boards in smart phones is higher than that of general electronic products. Smart phones use 5-12 pieces of FPC flexible circuit boards, and 1 to 5 pieces higher than functional phones. The output value of each smart phone FPC flexible circuit board is about that of functional phones. 2 to 3 times of that.

Such a huge shopping mall is bound to drive the rapid development of related fields. The camera modules, antennas, displays, USB cables, etc. of smart phones are inseparable from FPC flexible circuit boards.

2) Car electronic shopping mall.

Under the trend of car electronics, vehicle control systems, such as dashboard display, air quality, audio, display, sensors, etc., require high signal transmission and high trustworthiness to make FPC flexible circuit boards begin to show their strengths. Under the trend of precision FPC flexible circuit board components, coupled with the three-dimensional structure of the car body, the wiring area is narrow and bent, the selection of FPC flexible circuit board components can better meet the requirements of planning.

According to data from the China Automobile Industry Association, in 2018, my country's car production and sales increased by 18.96% and 18.86% year-on-year. During this period, passenger vehicle production and sales increased by 24.15% and 25.89% year-on-year, which is still the main force of increase.

(3) Medical monitoring equipment.

In the past ten years, China's medical equipment market sales plan increased from 17.9 billion yuan in 2001 to 912 billion yuan in 2019. Excluding the impact of price factors, it has increased by 20.84 times in more than 10 years. According to a sample survey calculated by the Medical Device Branch of the China Medical Materials Association, the national medical device sales plan for 2018 was about 955.6 billion yuan, an increase of 143.6 billion yuan from the previous year's 812 billion yuan, an increase rate of 43.06%.

With the rapid development of my country’s economy, the state’s emphasis on the construction of the county-level, township, community and other low-level medical and health systems has been promoted by internal and external needs such as aging, the second-child policy, consumption promotion, medical reform investment, and policy support. With the overall domestic level maintained at a relatively low level, there is still considerable room for the development of medical monitoring equipment, and the prospects for the development of the domestic medical device profession are worth waiting for.

The space for FPC flexible circuit boards will continue to expand market usage.