How Nano Coating Contribute To Your Total Cost Savings

  1. Highly conductible.
  2. With Anti-adhesion Ability, dirt can be removed easily (self-cleaning)
  3. Have longer life time, with the ability to increase the utilization rates of machine.
  4. Reduce yield loss
  5. Reduce Cleaning material (usage) and cleaning time
  6. Enhances durability of materials

How Nano Coating Helps In Probe Card

Without Coating
Without Coating
With Coating
With Coating
  • With Coating, the attractive force can be massively reduced
  • Attractive Force Ratio up to WO/W = 0.53/0.02 = 26 (times)

Homogenous Nano Coating Film

Homogeneous

Diamond Like Structure of Nano Coating

Images of the homogeneous of the Nano-Layer after the relocation of molecular in the Nano-Composites
Images of the homogeneous of the Nano-Layer after the relocation of molecular in the Nano-Composites

The homogeneous surface at t=10 minutes ( left image) is increased drastically after 6 hours of strorage in air(right image).

The yellow points(3) in the right image are of the diamond like structure nano layer surface. (By Pulse Force Microscopy)

  • Due to conducting polymer swim on the sea of gold electron cloud

Contamination Phenomenon

Fresh cleaned gold surface
Fresh cleaned gold surface
after 6 hrs exposure in air → contamination
after 6 hrs exposure in air → contamination
Gold surface with Nano Coating after 6 hrs exposure in air → Almost No contamination
Gold surface with Nano Coating after 6 hrs exposure in air → Almost No contamination

Nano-Coating Thickness Measurement by AFM

Measuring the thickness of the nano-polymer coating with high resolution Atomic Force Microscopy on probe
Measuring the thickness of the nano-polymer coating with high resolution Atomic Force Microscopy on probe
Measured thickness of the nano coating layer is 5~10 nm.
Measured thickness of the nano coating layer is 5~10 nm.

Mechanical and Chemical Touch Down Test

Au thickness→100% Serious damage & corrosion
Au thickness→100% Serious damage & corrosion
Reduce Au thickness → 80% Slightly damage & corrosion
Reduce Au thickness → 80% Slightly damage & corrosion
  • It shows that even reduce Au thickness with nano coating still can improve the touch down performance.

FDR Examination After High Current 2A/1.5S Life Time Test

FDR-(white-background)

Nano vs. Au

Testing Remaining：30 days
Nano-vs
Nano-vs-Au-chart-1
Nano-vs-Au-chart-2

Conclusion：

  1. First Pass Yield will not be affected after coating.
  2. Avg. TD / Socket is 5.8 times better than Au Pin.
  3. Socket PM No. is 4 times less than Au Pin.
  4. Total Test Volume is 1.36 times better than Au Pin.
  5. Increase the utilization rates of machine.

Comparison of P/C Before & After Nano-Coating by Client Testing

Nano-coating-by-Client-Testing

Customer FPY Test Result

FPY-Test-Result

Summary:

  1. Nano performance up to XXX insertions still maintain 0% contact failure on First Pass Yield
  1. Nano pin is much better than Au and PD Alloy

Comparison of Dirty Frequency Before & After Coating by Clients

Comparison-of-Dirty-Frequency-

※ Information Source: our clients