Explore the Cutting – Edge World of PCB Technology!
Application and Development Trend of Low Dielectric Loss Materials in Flexible Printed Circuit Boards Field (Part II)
Back to Part 1 « Industry Landscape and Emerging Players Constrained by this, the number of companies capable of mass-producing and supplying LCP film is also very small, with Japanese firms such as Murata and Kuraray leading the way, resulting in a highly concentrated industry landscape. However, it is worth noting that in recent years, companies such as Kingfa[...]
Application and Development Trend of Low Dielectric Loss Materials in Flexible Printed Circuit Boards Field(Part I)
6G is expected to become commercially available around 2030 and will deliver a quantum leap in performance. Transmission speeds will increase to 50 times those of 5G, latency will decrease to one-tenth of 5G levels, and key metrics will achieve significant breakthroughs in connection density, mobility, and positioning accuracy. 6G-Driven High-Speed FPC Design and Material Selection This technological evolution[...]
Rigid-Flex PCB Air-Gap Process Optimization for High-Yield Flexible Circuit Manufacturing(Part II)
Back to Part 1 « Evaluation by replacing dry film with a wet film with better flow properties Liquid ink shows good filling and flow properties. It is expected to effectively fill the pits at the bottom of the copper surface in the air gap. However, the ink requires high exposure energy. The process cannot remove residual ink during[...]
Rigid-Flex PCB Air-Gap Process Optimization for High-Yield Flexible Circuit Manufacturing(Part I)
With the development of rigid-flex boards and multi-layer high-density interconnect (HDI) flexible printed circuits, manufacturers have widely adopted multi-dimensional bending in rigid-flex boards and multi-layer flexible printed circuits. These technologies are widely used in consumer electronics such as smartphones, tablets, and wearable devices. Flexible printed circuits offer high reliability and excellent flexibility, characterized by high wiring density, light weight,[...]
Inner-Layer Pad Protection Methods for FPC: Materials, Processes, and Comparative Analysis
With the rapid advancement of electronic technology, standard single- and double-sided flexible circuit boards can no longer meet customer needs, leading to a growing demand for highly integrated, multilayer flexible boards and rigid-flex boards. When designing multilayer flexible boards, inner-layer pads often need to remain exposed. Therefore, during fabrication, the copper in these areas must be protected to prevent[...]
Rolled Copper Foil for FPC: Improving Fold Resistance, Flatness, and Etchability
In recent years, the production of high-qu ality flexible printed circuit boards has placed higher performance demands on its key conductive material— rolled copper foil. This is particularly evident in aspects such as the foil’s fold resistance, high elongation, etchability, and low surface roughness. At the same time, higher demands have been placed on its adaptability to FPC manufacturing[...]
What is the relationship between PCB trace width and current?
In PCB design, current-carrying capacity is one of the most misunderstood yet most critical parameters—particularly in power electronics, motor drivers, and high-current control systems. While signal integrity, impedance control, and EMC often receive significant attention, trace current capacity is frequently reduced to rough rules of thumb or “experience-based judgment.” This approach works—until it doesn’t. Unlike wires, PCB traces are[...]
Optimizing Flexible PCB Design with Heuristic A* Algorithm for FPC Routing
Modern electronic devices are trending toward thinner, lighter, and more highly integrated designs. Consequently, FPC design and the A* algorithm have emerged as key research directions for optimizing flexible circuit board routing. Flexible circuit boards (FPCs), valued for their bendability, compressibility, and high reliability, are widely adopted in consumer electronics and high-end electronic systems. However, their routing design demands[...]
Flex PCB: Basic Characteristics and types
Flexible Printed Circuit Board (FPCB), commonly abbreviated as flexible board, also known as flexible circuit or soft board, is a bendable printed circuit board (PCB) and constitutes a major category within PCBs. Within the industry, some abbreviate FPCB as FPC. This is incomplete because “printed circuit” only represents part of the board and does not encompass the entire board.[...]
Flexible PCB Material Stack-Up: Types, Functions, and Performance
A printed circuit board (PCB) is defined as a functional board that provides point-to-point connection lines and printed component interconnections on an insulating substrate according to a predetermined design. A flexible printed circuit board (FPCB) is a functional board that forms printed circuits on a bendable, flexible insulating substrate. Its basic structure is shown in Figure 1. Figure[...]
What are the core challenges in manufacturing Flex pcb?
As the “flexible nerves” of electronic devices, the manufacturing of FPC boards represents a precision art in modern industry. In smartphones, FPCs just 0.03mm thick must carry 10A currents; in satellite antennas, multilayer FPCs endure extreme temperature cycles from -180°C to 200°C. These seemingly contradictory performance metrics are precisely why FPC technology has long been pushed to the limits of[...]
Precision Laser Soldering for FPCBs: Low Heat, High Reliability in Wearables and Medical Electronics
In fields such as consumer electronics, medical electronics, and wearable devices, flexible printed circuit boards (FPCBs) have become the core medium for achieving product miniaturization and structural innovation due to their characteristics of being lightweight, thin, bendable, and resistant to repeated bending. However, the substrate materials of Flex PCBs (such as PI film and PET film) exhibit poor heat resistance[...]
