With the development of society, the progress of technology comes from people's constant pursuit of life and their yearning for higher quality of life. Personal consumer electronic products such as notebook computers, personal computers and mobile phones require lighter weight and smaller volume, while smaller volume requires smaller design accuracy and higher density. At the same time, the quality and speed of interconnection technology should be better. This requires designers who make these products to design better components to improve electrical performance, such as circuit boards and so on.
HDI PCB is the better option for high-layer count and costly laminated boards.
HDI stands for High Density Interconnector, HDI Printed Circuit Board. A circuit board which has a higher wiring density per unit area as opposed to conventional board is called as HDI PCB. HDI PCBs have finer spaces and lines, minor vias and capture pads and higher connection pad density. It is helpful in enhancing electrical performance and reduction in weight and size of the equipment.
Application: Cell phone, UMPC, MP3 Player, PMP, GPS, Memory Card
What is an HDI stackup in Multilayer PCB Design?
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HDI Printed Circuit Boards - High Density Interconnect PCB Technology
In order to manufacture PCB products of this kind, PCB manufacturers need more advanced manufacturing technology. Of course, from the point of view of product cost, it needs lower cost. This seems contradictory, but HDI PCB can solve this problem very well. HDI PCB has numerous advantages, such as high speed, small size and high frequency.
What is a HDI PCB, The definition of HDI PCB
High density interconnect (HDI) PCBs represent one of the fastest-growing segments of the Printed Circuit Board market. Because of its higher circuitry density, the HDI PCB design can incorporate finer lines and spaces, smaller vias and capture pads, and higher connection pad densities. A high-density PCB features blind and buried vias and often contains microvias that are .006 in diameter or even less.
Regarding the electrical needs of high-speed signal, the board should have various features i.e. high-frequency transmission capability, impedance control, decreases redundant radiation, etc. The board should be enhanced in the density because of the miniaturization and arrays of the electronic parts. In addition, to the result of the assembling techniques of leadless, fine pitch package and direct chip bonding, the board is even featured with exceptional high-density.
There were a lot of different names for the PCB with such structures. For example, it was called SBU (Sequence Build up the Process) in European and American industry as the program production is in the constructive mode of sequence. It was called MVP (Microvia Process) in Japanese industry because the hole of such products is much smaller than the previous one. It was also called BUM (Build up Multilayer PCB Board ) because the traditional multilayer is known as MLB (Multilayer PCB Board).In order to avoid confusion, IPC Printed Circuit Association proposed to call it HDI (High Density Interconnection Technology) as the common name, but it can not reflect the characteristics of the circuit board. So the majority in the PCB industry define such products as HDI PCB.
Innumerable benefits are associated with HDI PCB, like high speed, small size and high frequency. It is the primary part of portable computers, personal computers, and mobile phones. Currently, HDI PCB is extensively used in other end user products i.e. as MP3 players and game consoles, etc.
HDI PCBs take advantage of the most recent technologies existing to amplify the functionality of circuit boards by means of the similar or little amounts of area. This development in board technology is motivated by the tininess of parts and semiconductor packages that assist superior characteristics in innovative new products like touch screen tabs.
HDI PCBs are described by high-density features comprising of laser micro-vias, high performance thin materials and fine lines. The better density allows extra functions per unit area. These types of multifaceted structures give the required routing resolution for large pin-count chips which are used in mobile devices and other high technology products.
The placement of the parts on the circuit board needs extra precision than conservative board design due to miniature pads and fine pitch of the circuitry on the circuit board. Leadless chips require special soldering methods and additional steps in the assembly and repair process.
The lesser weight and size of the HDI circuitry means the PCBs fit into the little spaces and have a smaller amount of mass than conservative PCB designs. The smaller weight and size even signifies that there is lesser chance of harm from mechanical shocks.
Consumer Driven Technology
The via-in-pad process supports more technology on fewer layers, proving that bigger is not always better. Since the late 1980's we have seen video cameras using cartridges the size of a novel, shrink to fit in the palm of your hand. Mobile computing and working from home pushed technology further to make computers faster and lighter, allowing the consumer to work remotely from anywhere.
HDI Technology is the leading reason for these transformations. Products do more, weigh less and are physically smaller. Specialty equipment, mini-components and thinner materials have allowed for electronics to shrink in size while expanding technology, quality and speed.
HDI PCB Types
According to layer up different, currently DHI board is divided into three basic types:
1) HDI PCB (1+N+1)
Features:
1+N+1 HDI PCB Structure:
2) HDI PCB (2+N+2)
Features:
Application: Cell phone, PDA, UMPC, Portable game console, DSC, Camcorder
2+N+2 HDI PCB Structure:
3) ELIC (Every Layer Interconnection)
Features:
Application: Cell phone, UMPC, MP3, PMP, GPS, Memory card.
Every Layer Interconnection Structure:
JHY PCB' HDI PCB Capabilities
HDI PCB Manufacturing requires an advanced level of technical expertise and the latest state-of-the-art equipment for exacting precision.
JHY PCB offer solutions for low-volume/high-mix PCB manufacturing on a quickturn basis, as well as production quantities and high-tech capabilities for advanced builds with demanding requirements for aerospace, defense, medical, and commercial applications. Capabilities include:
HDI
Structures
Type of
Micro vias
Mass
Production
Small-Middle
Batch
Prototype
Available
1+N+1
Blind vias
Yes
Yes
Yes
4 layers+
2+N+2
Blind/Buried
staggered vias
Yes
Yes
Yes
6 layers+
2+N+2
Blind/Buried
stacked vias
Yes
Yes
Yes
6 layers+
3+N+3
Blind/Buried
staggered vias
/
Yes
Yes
8 layers+
3+N+3
Blind/Buried
stacked vias
/
/
Yes
8 layers+
Check our HDI PCB capabilities by reviewing the table found below:
Feature
Capability
Quality Grade
Standard IPC 2
Number of Layers
4 - 24layers
Order Quantity
1pc - 10000+pcs
Build Time
2days - 5weeks
Material
FR4 standard Tg 140°C,FR4 High Tg 170°C, FR4 and Rogers combined lamination
Board Size
Min 6*6mm | Max 457*610mm
Board Thickness
0.4mm - 3.0mm
Copper Weight (Finished)
0.5oz - 2.0oz
Min Tracing/Spacing
2.5mil/2.5mil
Solder Mask Sides
As per the file
Solder Mask Color
Green, White, Blue, Black, Red, Yellow
Silkscreen Sides
As per the file
Silkscreen Color
White, Black, Yellow
Surface Finish
HASL - Hot Air Solder Leveling
Lead Free HASL - RoHS
ENIG - Electroless Nickle/Immersion Gold - RoHS
Immersion Silver - RoHS
Immersion Tin - RoHS
OSP - Organic Solderability Preservatives - RoHS
Min Annular Ring
4mil, 3mil - laser drill
Min Drilling Hole Diameter
6mil, 4mil - laser drill
Max Exponents of Blind/Buried Vias
stacked vias for 3 layers interconnected, staggered vias for 4 layers interconnected
Other Techniques
Flex-rigid combination
Via In Pad
Buried Capacitor (only for Prototype PCB total area ≤1m²)
Benefits of HDI PCB Technology with Micro Circuits:
The evolution of high-density PCB technology has given engineers greater design freedom and flexibility than ever before. Designers using HDI high density interconnect methods now can place more components on both sides of the raw PCB if desired. In essence, an HDI PCB gives designers more space to work with, while allowing them to place smaller components even closer together. This means that a high-density interconnect PCB ultimately results in faster signal transmission along with enhanced signal quality.
HDI PCB is widely used to reduce the weight and overall dimensions of products, as well as to enhance the electrical performance of the device. The high-density PCB is regularly found in mobile phones, touch-screen devices, laptop computers, digital cameras and 4G network communications. The HDI PCB is also prominently featured in medical devices, as well as various electronic aircraft parts and components. The possibilities for high-density interconnect PCB technology seem almost limitless.
HDI PCB Applications
HDI PCBs are appropriate for a wide range of industries. As mentioned above, you'll find them in all types of digital devices, like smartphones and tablets, where miniaturization is key to the effective application of the product. You can also find high-density interconnect PCBs in automobiles, aircraft and other vehicles that rely on electronics.
One of the most critical areas where the high-density PCB is making huge inroads is in the medical arena. Medical devices frequently need small packages with high transmission rates that only HDI PCBs can supply.
For example, an implant needs to be small enough to fit in the human body, but any electronics involved in that implant absolutely must efficiently allow for high-speed signal transmission. Here, the HDI PCB indeed is a godsend. HDI PCBs can also be useful in other medical equipment, like emergency room monitors, CT scans and much more.
No matter your industry, you're probably already getting some ideas about how high-density interconnect PCBs can make the electronics you produce or use even better - get in touch with us PCBCart to discuss it. We'll let you know if you're on the right track and help you decide exactly how beneficial an HDI PCB can be to your industry. Then, you can determine whether or not to take the next step.
High Density PCBs of Impeccable Quality manufacturer
Over the course of a decade in business, JHY PCB has established a hard-earned reputation for manufacturing PCBs of the highest quality. Our Custom PCB manufacturing capabilities enable you to get the finest quality HDI PCBs at competitive prices without min order quantity requirement. Our team run design for manufacture check on your custom PCB file and consult with you to ensure it is ready for manufacturing and that your boards will meet your performance requirements. We also have an on-site quality control department to verify the finished product meet your high quality standards.
Laser Drill & Laser Direct Imaging: Technology for High Quality HDI PCB Manufacturing.
HDI PCB designs push the limits of technology and JHY PCB is at the forefront of innovation, satisfying the most rigorous requirements.
The demand for HDI PCB manufacturing has been increasing due to the advancements in technology and the many benefits HDI PCBs provide for high-tech applications. Fitting more technology in less space with fewer layers creates limitations for many PCB manufacturers that do not have the specialized equipment and the capacity for advanced features, finer lines, and tighter tolerances.
HDI printed circuit board designs utilize a combination of advanced features like microvias, blind vias, via-in-pad, along with stacked and staggered vias to maximize the the space of the board while increasing its performance and functionality.
JHY PCB achieves high quality and precision with in-house laser drill capabilities that include precise depth control. Laser direct imaging (LDI) capabilities ensure exacting registration and all multilayer inner cores receive a thorough check using Automated Optical Inspection (AOI) units for excellent defect detection of the finest features.
Advanced PCB Materials for HDI PCB Fabrication
JHY PCB offers vast material options for different applications from top manufacturers, such as Isola, Nelco, Arlon, Rogers, and Taconic. Our laminate options offer advanced properties that include:
Additional informations
Generally in the shopping malls or specialty stores, LED lights are widely used to create a comfortable and bright shopping environment. In traditional pharmacies, most of the neglected lighting of the storefront is used for lighting, not for the store and Products improve quality. Below, LED lamp manufacturers and everyone to analyze the lighting design of the pharmacy.
Nowadays, the lamps commonly used in pharmacies have grille lamps and ceiling lamps. Because they illuminate the lowest area of ​​the container, they will show some areas where the area is bright and some black areas are not bright "blind areas". To solve this problem, most pharmacies use the end-to-end connection. The fluorescent lamp is placed in a "cross" shape with the container. Although the problem of light is solved, but because the light is too strong, more glaring, and not too respected, when we consider the lighting design, we must not only provide enough brightness for the store, but also attract the attention of the customer to the sale. Commodities come up and create a desire to buy.
Lighting systems can be divided into general lighting, accent lighting, building lighting and special effect lighting. Only by balancing these four ways can we create the right effects and atmosphere.
Key lighting: LED spotlights and external headlights can be used. Spotlights are usually equipped with lampshades. They are characterized by concentrated beam and directivity, and can adjust the angle of projection. They have certain flexibility to attract customers outside the store. Sight and make it into the store, but the light is not too strong and is warm.
Architectural lighting: A bright roof will make the space look taller, while a bright wall will make it look more spacious. It can be illuminated by LED ceiling lamps, LED fluorescent lamps, LED strips, etc. It is mainly responsible for in-store lighting and pedestrian passages. The pharmacy can use this light to distinguish the functional areas, such as the green medicine area, the yellow health food area, the pink medicine area, and the blue equipment area.
Special effects lighting. Contrary to accent lighting, it is generally used in places where special lighting effects are desired to attract customers rather than directly illuminating the merchandise. A common technique is to install a narrow beam spotlight on the roof or to use a blackout spotlight to achieve special lighting effects, such as decorating a shaded pattern, picture, trademark or advertising material on the plane of a valuable item. Because it creates attractive lighting effects, it can help stores increase sales. LED downlights , LED ceiling lights and other lighting fixtures can be used.
In addition, because the medicine is a special commodity, the quality of the medicine should be avoided due to the heat of the light. These problems should be taken into account in the design, and the LED lamp has the advantage of small heat generation. Therefore, the LED lamp manufacturer recommends the use of the LED lamp. To illuminate.