Что такое гибкие печатные платы FPC?

FPC, полное название - « Гибкая печатная схема» , которая состоит из рисунков проводящих цепей с использованием методов переноса рисунка светового изображения и травления на гибкой поверхности подложки. Отверстие для металлизации обеспечивает электрическую связь между внутренним и внешним слоями, а поверхность рисунка схемы защищена и изолирована слоем PI и клеевым слоем.

At present, there are four types of FPC: single-sided FPC, double-sided FPC, multilayer flexible board FPC and  rigid-flex board FPC.

Таблица содержания

Single side FPC

Double side FPC

Multilayer flexible board FPC

Rigid and flexible board FPC

PCB VS FPC

Single side FPC

The single-sided flexible board FPC is the printed board with the lowest cost and low electrical performance requirements. FPC has a layer of chemically etched conductive pattern, and the conductive pattern layer on the surface of the flexible insulating substrate is a rolled copper foil. The insulating substrate may be polyimide, polyethylene terephthalate, aramid fiber ester, and polyvinyl chloride.

Double side FPC

A double-sided flexible board FPC is a conductive pattern made by etching a layer on each side of an insulating base film. Metallized holes connect the two sides of the insulating material to form a conductive path to meet the design and use functions of flexibility. FPC, The cover film protects single and double-sided wires and indicates where components are placed.

Multilayer flexible board FPC

Multi-layer flexible board FPC is a single-sided or double-sided flexible circuit with 3 or more layers laminated together, forming metalized holes through drilling and plating, and forming conductive paths between different layers. FPC, There are have huge functional differences in terms of higher reliability, better thermal conductivity, and easier assembly performance. When designing the layout, the interaction of assembly size, number of layers and flexibility should be considered.

Rigid and flexible board FPC

Rigid and flexible boards FPC are composed of rigid and flexible substrates selectively laminated together. FPC structure is compact, forming conductive connections with metallized holes. If a printed board has components on both its front and back, a rigid-flex board is a good choice. However, if all the components are on one side, it is more economical to use a double-sided flexible board and laminate a layer of FR4 reinforcement on the back.

PCB VS FPC

• The PCB is a printed circuit board or a printed wiring board. FPC is the abbreviation of flexible circuit board, PCB is divided into flex board and rigid board, but most печатные платы are rigid. And FPC multi-purpose mobile phone cable, LCD screen line these foldable lines. The flexible lamp belt uses FPC, and its folding resistance is definitely stronger than that of PCB flexible board.
• FPC flexible circuit boards assembly time is short, all lines are configured, eliminating the need for redundant wiring connections. FPC volume is smaller than PCB, which can effectively reduce product volume and increase convenience in carrying. FPC is lighter than PCB (rigid board), which can reduce the weight of the final product. FPC thickness is thinner than PCB. Can improve the softness. Strengthen the assembly of the third space in a limited space.

FPC Application

FPC  flexible circuit boards was originally only used in military fields such as space shuttles. Nowadays, with its thin and flexible features, it has catered to the trend of downstream electronics products, and has quickly penetrated into the civilian field, gradually covering consumer electronics, automobiles, industrial control, medical treatment, and instrumentation. And other fields.

The application of mobile phone FPC is the main battlefield. At present, FPC flexible circuit boards in smart phones is mainly dual-panel, while rigid-flex FPC is very suitable for the needs of display panels, batteries and camera modules. According to related professionals forecast, the output value of the rigid-flex combined FPC will reach 2.317 billion US dollars by 2020, which will become one of the main development directions of the FPC industry in the future. FPC flexible board is mainly used in mobile phones, mobile phone cameras, mobile phone antennas, mobile phone capacitive screens, mobile phone buttons, mobile phone batteries, mobile phone modules, mobile phone cables, hand side health, and so on. And its light, thin, short, small performance saves a lot of space inside the phone, so FPC is widely used in mobile phones.