HDI Circuit Board Production Process

HDI (High Density Interconnect) circuit boards are an advanced circuit board technology whose manufacturing process involves multiple complex steps.

The following is the detailed production process flow of HDI circuit boards:

HDI PCB production preparation stage

Before starting to manufacture HDI circuit boards, you need to prepare the following materials:

*Substrate: Polyimide or polyester films are usually used as substrates because of their high heat resistance and mechanical strength.

  • Copper Foil: A metallic material used as a conductive path.
  • Insulating layer: used to isolate conductive paths at different levels.
  • Resist: Used to protect non-conductive areas from etchants.

HDI circuit board production light painting and exposure

  1. Photo drawing: Convert the designed circuit pattern into a photomask to form a conductive path on the substrate.
  2. Exposure: Place the photomask on a substrate coated with photosensitive material, and solidify the photosensitive material through ultraviolet irradiation to form a circuit pattern.

HDI circuit board electroplating

Plating is performed on a substrate where conductive paths have been formed to increase conductivity. Copper plating is usually done using electroless plating or electroplating methods.

HDI PCB removal and etching

  1. Film removal: Remove the resist to expose the conductive paths on the substrate.
  2. Etching: Use chemical etchants to remove non-conductive areas on the substrate to form the final circuit pattern.

HDI PCB drilling and hole metallization

  1. Drilling: Small holes are drilled into the substrate to create connections between conductive paths at different levels.
  2. Hole metallization: A metal layer is formed on the inner wall of the drilled hole through electroplating or chemical plating so that conductive paths at different levels can be connected to each other.
HDI Circuit Board Production Process

HDI circuit board inspection and repair

  1. Inspection: Use various inspection methods (such as visual inspection, X-ray inspection, etc.) to ensure the manufacturing quality of HDI circuit boards.
  2. Repair: Repair unqualified HDI circuit boards to improve their reliability.

HDI circuit board finished product inspection and packaging

  1. Finished product inspection: Conduct appearance and performance inspection on the completed HDI circuit board to ensure that it meets the design requirements.
  2. Packaging: Properly package qualified HDI circuit boards for transportation and storage. Packaging is usually in vacuum-sealed packaging or moisture-proof packaging to protect the circuit board from the environment.

HDI circuit board post-processing and testing

  1. Post-processing: Perform necessary post-processing on the HDI circuit board, such as cleaning, film removal, drying, etc., to ensure its quality and reliability.
  2. Testing: Conduct electrical performance testing on the HDI circuit board to ensure its normal operation. Testing includes functional testing, parameter testing, aging testing, etc.

The above is the detailed production process flow of HDI circuit boards. Close coordination is required between each step to ensure the quality and reliability of the final product.

During the production process, attention must also be paid to environmental protection and production safety to avoid adverse effects on the environment and employees.

Fumax HDI (High Density Interconnect) Factory

Fumax HDI (High Density Interconnect) factory focuses on the production of high-density interconnect boards, which are widely used in communications, medical, aerospace and other fields. Characterized by high precision, high density and high reliability, they provide powerful interconnect capabilities for complex electronic systems.
HDI factories use advanced process technology and equipment to ensure high quality and efficient production of products.
From design to manufacturing, every link undergoes strict quality control to ensure the reliability and stability of the final product. HDI Factory not only provides customers with high-quality products, but also provides comprehensive technical support and solutions to help customers solve various interconnection problems. Please contact us for specific service items.

Related Posts

HDI PCB’s Advantages in Industrial electronics

Why HDI and how does it work In the realm of industrial control systems, High-Density Interconnect (HDI) Printed Circuit Boards (PCBs) have emerged as transformative components, revolutionizing the landscape of modern manufacturing and automation. HDI PCBs play a pivotal role in enhancing the functionality, reliability, and compactness of various industrial devices, facilitating an era of […]

Unveiling Circuit Card Assembly 2024: From PCB Manufacturing to Board Assembly

Hey there, tech enthusiasts! Get ready to dive deep into the fascinating world of circuit card assembly. In this comprehensive guide, we’ll take you through every meticulous step of the process, from PCB manufacturing to the final assembly of the board. So grab your coffee, settle in, and let’s explore the intricate journey of bringing […]

Optimizing High-Speed Design: Balancing Signal, Power, and EMC for Success

Editor’s Note: In modern high-speed designs, analyzing signal integrity, power integrity, and EMC separately is not enough; a holistic approach is essential for successful design. Background Issue: When signals cross over segmentation areas between adjacent reference planes on a layer, discussions about signal integrity often arise. Some argue that signals should not cross the segmentation […]

PCB copper cladding

In the PCB design process, copper cladding is an important aspect, and various PCB design software provide intelligent copper cladding functionality, which covers unused spaces on the PCB with copper. The significance of copper cladding lies in reducing ground impedance, enhancing anti-interference capability, lowering voltage drop in power traces, improving power efficiency, and connecting to […]

PCB Pad Design Guideline(2)

4.3.9 When designing multilayer boards, attention should be paid to components with metal casings that are in plug-in packages and make contact with the printed circuit board. The top layer pads must not be opened. They must be covered with green oil or silkscreen ink (such as two-pin crystals, three-pin LEDs). 4.3.10 When designing and […]

PCB Pad Design Guideline(1)

Standardize the PCB pad design process, define the relevant parameters of PCB pad design process, ensuring that the PCB design meets technical specification requirements such as manufacturability, testability, safety regulations, EMC, and EMI, and construct the advantages of process, technology, quality, and cost in product design. This specification applies to the PCB process design of […]

Exploring Precision Resistors: Introduction and Top 10 Manufacturers(Updated on 2024)

In the realm of modern electronics, precision resistors play a crucial role as key components in circuits, regulating current and voltage. Unlike standard resistors, precision resistors offer heightened accuracy and stability, making them essential for applications such as test instruments, medical devices, and aerospace technology. This article will delve into the concept of precision resistors, […]

Key to Quality: First Article Inspection in Electronics Manufacturing

In the fast-paced world of electronic manufacturing, ensuring quality and efficiency is paramount. Among the arsenal of quality control measures, First Article Inspection (FAI) stands out as a crucial step, particularly in the intricate process of printed circuit board (PCB) assembly. Let’s delve into why FAI is indispensable in electronic manufacturing and PCB assembly processes. […]

Optimizing PCB Assembly: A Seamless Customer Order Journey

In the dynamic landscape of electronics manufacturing, efficient execution of customer orders is paramount. At our state-of-the-art facility, we pride ourselves on seamlessly orchestrating the production process from inception to delivery, ensuring client satisfaction at every step. In this article, we delve into the intricate journey of a customer’s order, shedding light on how PCB […]