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Advantages of multilayer circuit boards

Advantages of multilayer circuit boards

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  • Time of issue:2021-05-18 16:27
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Advantages of multilayer circuit boards

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As the name implies, a multi-layer circuit board is a circuit board with more than two layers that can be called multi-layer, such as four-layer, six-layer, eight-layer and so on. Of course, some designs are three-layer or five-layer circuits, also called multi-layer PCB circuit boards. For conductive traces larger than two-layer boards, there are insulating substrates between layers to separate them. After each layer of circuit is printed, the circuit of each layer is overlapped by pressing, and then drilled, and the conduction between the circuits of each layer is realized by via holes. The advantage of the multi-layer circuit board is that the circuit can be distributed in the multi-layer wiring, so that more precise products can be designed, or the smaller products can be realized by the multi-layer board, such as mobile phone circuit boards, micro projectors, and recording Pen etc. In addition, multiple layers can increase design flexibility, better control of differential impedance and single-ended impedance, and better output of certain signal frequencies.

Multilayer circuit boards are an inevitable product of the development of electronic technology in the direction of high speed, multi-function, large capacity and small volume. With the continuous development of electronic technology, especially the extensive and in-depth application of large-scale and very large-scale integrated circuits, the development of high-density, high-precision and high-level digitization has led to the emergence of fine lines, small aperture penetrations, and blind hole burying. Technology such as hole height, plate thickness and aperture ratio to meet market demand. Due to the demand for high-speed circuits in the computer and aerospace industries, it is required to further increase the packaging density, coupled with the shrinking of the size of separate components and the rapid development of microelectronics, electronic equipment is also developing in the direction of reducing the size and quality. Single and double-sided printed boards are available due to

Space constraints make it impossible to achieve a further increase in assembly density. Therefore, it is necessary to consider the use of printed circuits with more layers than double-sided circuit boards, which creates conditions for the emergence of multilayer circuit boards.

Keyword:

The evaluation system of the circuit board factory should follow the following principles

The evaluation system of the circuit board factory should follow the following principles

Establishing a good cooperative relationship with circuit board factories is conducive to cost reduction, response time reduction and the creation of new market value, etc. The core issue is how to choose the ideal circuit board factory. There are many factors involved in the evaluation of circuit board factories, and the evaluation index systems are diverse, both qualitative and quantitative, and the index weights are also different. Therefore, it is necessary to establish a universal and expandable evaluation index system for circuit board factories. , And the indicator system should follow the following principles:
The use of soft and hard circuit boards?

The use of soft and hard circuit boards?

In our daily life, circuit boards are mostly single-sided, double-sided, or multi-layer boards, rigid boards, metal-based circuit boards, aluminum, copper substrates, thermally conductive fiberboards, etc., do you know what a flexible and rigid circuit board is? Rigid-flex circuit board: refers to a special circuit board made by pressing a rigid circuit board (PCB) and a flexible circuit board (FPC). The main board materials used are rigid board FR4 and flexible board polyimide (PI). Rigid and flexible circuit boards combine the rigid characteristics of rigid circuit boards and the advantages of flexible circuit
Soft and hard circuit board production process

Soft and hard circuit board production process

The flexible and hard circuit board is the flexible circuit board and the rigid circuit board. After pressing and other processes, they are combined according to the relevant process requirements to form a circuit board with FPC characteristics and PCB characteristics. In the past, two hard boards were connected by using soft boards and connectors to connect each other. In order to improve the reliability of the connection between the rigid board and the flexible board, the flexible board is directly fabricated between two rigid boards in the printed circuit board (PCB) factory, which can avoid the subsequent connection process, whether it is a rigid board manufacturer or FPC manufacturers are now able to supply rigid-flex boards. Under the demand for light and thin end products, the

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