Miniaturized Flexible PCBs for Connecting Components in Portable Devices

♦ What is Flexible PCB

​​Flexible PCB (FPC)​​, also called a ​​"soft board"​​ or ​​flexible circuit​​, is a type of printed circuit board (PCB) made from ​​flexible insulating materials​​, such as ​​polyimide (PI)​​ or ​​polyester (PET)​​, instead of rigid fiberglass (FR4). This unique construction allows FPCs to ​​bend, fold, and twist​​ without breaking, enabling ​​compact, lightweight, and space-saving designs​​ in modern electronics.

♦ Advantages of FPC

• • Lightweight and portable: thin thickness and light weight, saving equipment space and weight.

  • Flexible and bendable: bendable and foldable, adaptable to complex structural design.

  • Durable: resistant to repeated bending and long service life.

  • Stable signal: reduce transmission interference and ensure high-speed data transmission.

  • High integration: dense arrangement of circuits and components, integrated functions.

♦ Difficulties in Flexible PCB Manufacturing

• • ​​Base material is fragile: PI film is thin and easy to wrinkle and crack, low-tension precision processing is required.

  • Micro-line is difficult to control: micron-level line width/spacing, electroplating and hole filling are prone to defects.

  • Strict alignment: multi-layer lamination requires high precision, and offset affects yield.

  • Surface sensitivity: The plating needs to balance flexibility and conductivity, and the process window is narrow.

  • Complex detection: internal line defects are difficult to detect, relying on expensive equipment such as X-ray.

♦ Applications of Flexible PCB

• • ​​Smartphones & Wearables​​ (foldable screens, flexible displays);

  • ​​Laptops & Tablets​​ (hinge connections, battery flex cables);

  • ​Automotive Electronics​​ (sensors, lighting, dashboard controls);

  • ​​Medical Devices​​ (implantable electronics, diagnostic equipment);

  • ​​Aerospace & Defense​​ (lightweight, high-reliability circuits).

♦ Technical Parameters

♦ One-Stop PCBs Solution

PCB Prototype	Felx PCB	Rigid-Flex PCB	Ceramic PCB
Heavy Copper PCB	HDI PCB	High Frequency PCB	High TG PCB

♦ Advantages of DQS Team

1. On-time Delivery:

• • Owned PCBA factories 15,000 ㎡
  • 13 fully automatic SMT lines
  • 4 DIP assembly lines

2. Quality Guaranteed:

• • IATF, ISO, IPC, UL standards
  • Online SPI, AOI, X-Ray Inspection
  • The qualified rate of products reach 99.9%

3. Premium Service:

• • 24H reply your inquiry
  • Perfect after-sales service system
  • From prototype to mass production