Soft hard junction board is a circuit board with FPC and PCB characteristics formed by combining flexible circuit boards and rigid circuit boards through compression and other processes according to relevant process requirements. It combines the durability of rigid boards with the adaptability of flexible boards, and can meet the requirements of complex three-dimensional assembly and high reliability connections. The structure of soft hard composite board is diverse, including single-sided structure, double-sided structure, hybrid structure, and multi-layer laminated structure.

Soft hard composite board has the following significant characteristics and advantages:
Flexible spatial layout: By combining rigid and flexible parts, the soft hard composite board can provide more flexible spatial layout capabilities while maintaining the support and stability of electronic components.
High reliability: The combination of soft and hard boards has the strongest resistance to harsh application environments among all types of circuit boards, and has higher reliability.
Reduce volume and weight: The soft hard bonding board can be bent and folded in half, thereby saving internal space of the product, reducing the volume of the finished product, and reducing weight.
Improving performance: Compared to ribbon cables, soft hard composite boards have a longer lifespan and more reliable stability, are not easily broken or oxidized, and greatly help improve product performance.

Soft hard composite boards are widely used in various fields due to their unique performance and advantages:
Industrial control: Industrial control equipment, measuring instruments, and automated production equipment require high-density integration and high reliability connections, and the combination of soft and hard boards can meet these requirements.
Consumer electronics: In devices such as smartphones, tablets, smartwatches, fitness trackers, smart glasses, etc., the soft hard interface board is used to connect components such as display screens, camera modules, sensors, etc.
Automotive electronics: Soft and hard integrated boards are used inside cars to connect components such as car displays, sensors, controllers, etc., meeting the complex working environment and high reliability requirements inside cars.
Medical equipment: The signal transmission part, control module, etc. in medical equipment often use a combination of soft and hard boards to meet special requirements for space and shape.
Aerospace: In the navigation and control circuit of aircraft or drones, the combination of soft and hard boards can provide stable and reliable electrical performance, meeting the reliability requirements in harsh environments.

The manufacturing process of soft hard composite boards is relatively complex, involving multiple steps and fine operations. The main processes include:
Design phase: Use CAD software for circuit design to ensure precise connection between rigid and flexible parts.
Material selection: Choose suitable substrates based on product requirements, such as PI (polyimide), FR4, etc.
Making conductive layer: Creating conductive patterns through photolithography process.
Layering and Drilling: The rigid and flexible layers are laminated and mechanically drilled at designated locations for subsequent installation of components or interlayer connections.
Electroplating and surface treatment: Plating a layer of copper on the hole wall through chemical plating or electrolytic plating to ensure reliable electrical connection. Treat the exposed copper surface to enhance welding performance and prevent oxidation.
Outer layer fabrication and flexible circuit fabrication: Create outer layer circuit patterns and protect the bending performance of flexible areas.
Combining process: Accurately align and bond the prepared flexible circuit with the rigid board, commonly using methods such as hot pressing bonding and adhesive bonding.
Testing and Inspection: Conduct circuit connectivity and functional testing to ensure product quality meets standards.

If pursuing cost-effective FPC manufacturing services, choosing a Chinese manufacturer is the best choice. As a manufacturing powerhouse, China has abundant resources, cheap labor, and a large number of technical personnel. We recommend Haibo, a Chinese FPC assembly service provider with over 10 years of experience, who has performed outstandingly in various aspects

Efficient and reasonable quotation:There is an efficient quotation process to assist you in making decisions, providing reasonable prices and highly competitive quotes in China.
High quality and reliable products:Produce high standard printed circuit boards, manufacture and test according to specifications, international standards, and internal controls, and conduct pre production inspections to ensure robust processes.
Quick and on-time delivery:The assembly equipment is in good condition, with high productivity, minimal downtime, short delivery time, and also provides urgent services.
Timely and effective response:Always respond to customer needs, provide accurate information, answer questions through multiple channels, and offer one-stop services.
Strong technical strength:China's FPC manufacturing technology is leading, and Haibo has a complete SMT solution that covers assembly, inspection, and other capabilities. It also provides prototype production and customization services.