Description
What is Transparent Glass PCB?
Are you looking for a PCB substrate that can be flatness, transparent, No deformation, heat resistance, and tear-resistance? Then using a glass substrate to build the PCB can meet your demand, and we called this PCB as transparent glass PCB.
What are the advantages of the transparent Glass PCB?
- Transparency, Glass PCBs PCB are very clear, and the transparency rate can be over 90%, which can be used for the display, solar, packaging applications or optical communication.
- High Thermal Stability and low thermal expansion: Glass materials consistently perform well even in high-temperature environments, and their thermal expansion coefficient is similar to that of silicon, which helps decrease the thermal mismatch stress problems during the chip packaging process. This provides an effective solution to the 3D-IC stacking distortion problem
- High Dielectric constant and low Dielectric Loss: Glass material is a kind of insulating material, and the dielectric constant is about 1/3 of silicon. Its loss tangent is 2-3 orders lower than silicon’s. It greatly minimizes substrate loss and parasitic effects and improves signal transmission.
- Chemical Stability and Corrosion Resistance: Glass substrates have very good chemical stability, withstanding environmental corrosion such as moisture and acids, therefore, maintaining long-term stability of the contained components within the packaging.
- Environmental Friendliness and Long-Term Reliability: Glass substrates do not contain organic volatiles, making them more environmentally friendly. Stable physical and chemical properties of their substrates make the packaged product with better long-term reliability.
- High Frequency and RF Applications: Glass PCBs are commonly used in high-frequency and RF (radio frequency) applications, including wireless communication systems, radar, and RF amplifiers.
Why Is SFX PCB the Best Choice for Transparent Glass PCB?
SFX PCB has developed its proprietary technology to address the two primary challenges of Glass PCBs: Copper Adhesion and Fine-Line Precision.
| Technology | Copper Plating | Track Technology | Track Precision | Copper Adhesivity | Yield | Copper Thickness |
|---|---|---|---|---|---|---|
| Thick film | Stencil | silkscreen | Not clear, poor surface smooth | Poor(1.0) | High(80-95%) | 10-25um |
| Thick film | Vacuum plating | Etching | High Precision, surface smooth | Poor(0.7) | Low(50%-70%) | 6-12um |
| FX PCB | Own technology | Etching | High precision, surface smooth | Strong(3.0) | High(85%-96%) | 6-45um |
SFX PCB offers a significant advantage in copper plating and etching, ensuring superior conductor quality and strong adhesion that greatly exceeds industry standards.
SFX PCB Transparent Glass PCB Capabilities
| Board Thickness(mm) | 0.5-4mm |
| Layer Number | 1-2L |
| Base copper thickness(um) | 6-45um |
| Min Track width | 150um ± 20um |
| Min Hole Size | 0.2+/-0.05mm |
| Size | 600 × 1420mm |
| Transparent Size | 85% – 96% |
| Surface Treatment | OSP, ENIG, immersion Nickle, Tin, ENEPIG |
| Material | Tempered low iron glass; Float glass; Sapphire crystal glass; Quartz glass |
Where is Transparent Glass PCB Used?
5G/6G Communication: Essential for high-frequency and RF (Radio Frequency) circuits, including base stations, radar, and RF amplifiers, due to minimal signal loss.
Display Technology: Used in large-format LED displays, Mini-TVs, and LCD backplanes for clarity and dimensional stability.
Solar & Energy: Utilized in photovoltaic modules and related power electronics.
Advanced Packaging: Critical for 3D-IC stacking and interposers due to superior flatness and CTE matching with silicon chips.
Emerging Tech: Including augmented reality (AR) devices and specialized 3D printing applications.
FAQ
What kind of solder mask can be used on your transparent glass PCB?
We offer standard solder mask colors (Green, White, Black, etc.). Crucially, we also provide a Clear Solder Mask option specifically designed to maintain the highest transparency rate of the finished PCB.
How is the Transparent Glass PCB made (briefly)?
The manufacturing process is similar to standard PCBs but requires specialized steps due to the glass core: Glass Cleaning, Laser Drilling (for Through-Glass Vias), PVD (Physical Vapor Deposition), Plating, Pattern Imaging, Etching, and Surface Finish application.
What are the main types of Glass PCB materials?
The choice of glass depends on the final application’s requirements:
High Purity Fused Silica: Used for optical fiber and extreme environments.
Alkali-free Silicate Glasses: Common in semiconductor and LCD applications.
Borosilicate Glass: Known for excellent thermal shock resistance (labware).
Sapphire Glass: Offers superior thermal characteristics and chemical durability.
Final Words
Glass transparent PCBs are rapidly stepping their foot in the printed circuit board industry. Suppose you are a communication, medical or military device manufacturer. In that case, it’s high time you focus on the flashes of brilliance and benefits of glass and finds ways to apply them to your devices.
In summary, the transparency and functional characteristics of transparent glass PCBs make them the best choice for applications that require both visual appeal and reliable performance. Their ability to combine aesthetics, thermal management, and signal integrity in a single solution positions them as a compelling option across various industries.
So if you are looking for a transparent glass PCB or transparent PCB manufacturer in China to get a price, please send us an email at info@sfxpcb.com or send your information here.
