Driven by technologies such as 5G communication, artificial intelligence, and the Internet of Things, global chip manufacturing is moving towards greater precision, integration, and frequency. When the industry focuses on nanotechnology and breakthroughs in computing power, a seemingly ordinary material – electronic adhesive – is playing an irreplaceable “guardian” role in the chip packaging and testing process. According to statistics, the demand for functional adhesives in the advanced packaging market has grown at an average annual rate of 18.7%, and its technological evolution is directly related to the reliability and service life of chips.
Four major challenges in chip protection
The harsh application environment faced by modern chips places higher demands on packaging protection:
1. Environmental erosion: circuit failure caused by humidity, salt spray, and chemical corrosion
2. Mechanical stress: Microcrack propagation caused by vibration impact, thermal expansion and contraction
3. Thermal management: 3D stacked packaging with heat flux density exceeding 100W/cm ²
4. Signal interference: The demand for electromagnetic shielding in the 5G millimeter wave frequency band has surged
Five dimensional protection system for electronic adhesives
In response to the pain points of chip protection, Lingwo has launched the “PUR” series of electronic adhesives, which build comprehensive protection through material innovation:
Waterproof and moisture-proof: The nanoscale hydrophobic coating ensures that the water absorption rate of the package is less than 0.1%, and has passed JEDEC MSL-1 certification
Stress buffering: Low modulus organic silicone (elastic modulus ≤ 0.5MPa) absorbs 90% of mechanical stress
Efficient heat dissipation: Thermal conductive adhesive doped with boron nitride filler achieves a thermal conductivity of 8.5W/m · K
Electromagnetic shielding: The shielding effectiveness of conductive adhesive containing silver/copper particles is up to 65dB@10GHz
Dielectric protection: Bottom filling adhesive with a dielectric constant of 2.8 reduces signal crosstalk by 30%
Breakthrough Technology Application Cases
In the field of power modules for new energy vehicles, after using two-component epoxy sealant:
Successfully extended the thermal fatigue life of IGBT modules to 150000 cycles at -40 ℃ to 150 ℃
The insulation resistance remains stable above 10 ¹² Ω in humid and hot environments
The failure rate of vibration testing has decreased from 2.3% to 0.05%
Chip packaging adhesive is not a simple ‘sealing material’, but a key material that determines the reliability of electronic devices, “said Professor Zhang from the Institute of Microelectronics, Chinese Academy of Sciences.” Especially for automotive grade chips, they need to meet both AEC-Q100 certification and ISO 16750 standards, which puts almost stringent requirements on the temperature resistance range, CTE matching, and ion purity of the adhesive. ”
The invisible driving force of intelligent manufacturing
In automated packaging production lines, the process adaptability of adhesives directly affects production efficiency:
1. UV cured adhesive achieves rapid molding in 3 seconds, increasing production line pace by 40%
2. Low viscosity capillary bottom filling adhesive (viscosity<1000cps) accurately penetrates 0.1mm gap
3. Rewritable thermal interface materials increase the success rate of chip repairs from 60% to 95%
Green safety dual upgrade
With the implementation of the EU RoHS 3.0 regulation, Lingwo has taken the lead in launching halogen-free bio based epoxy adhesives:
Volatile organic compound (VOC) emissions<10 μ g/g
Obtained UL94 V-0 flame retardant certification
After aging at 180 ℃ for 3000 hours, the bond strength retention rate is greater than 85%
Lingwo has been dedicated to the research and development of electronic adhesives for 13 years, with various industry certifications, research and development, laboratories, and fully automated production lines. Its products cover more than 200 application scenarios such as chip packaging, PCB assembly, and component fixation, serving over 300 global scale enterprises and supporting the construction of China’s “chip” ecosystem through material innovation.
