Diced Silicon Wafers Small Quantities Available

University Wafer Silicon Wafers and Semicondcutor Substrates Services
University Silicon Wafer for Production

Diced Silicon Wafers

We can dice any diameter wafer into the dimension you need. Wafer thickness is not a problem.

UniversityWafer, Inc. and our partners provide researchers with creative silicon wafer and other substrate dicing solutions. Using precision diamond saws we can cut a variety of hard brittle materials.

Our Services Include.
Small quantity wafer dicing at an affordable price. Larger volumes are available on request.

Get Your Diced Silicon Wafer Quote FAST!


 

UniversityWafer, Inc's silicon wafer dicing service including cutting wafers with a wafer dicing saw and laser dicing silicon wafers.


Our wafer dicing techniques do not damage the wafers and provide a smooth clean surface.

Below is a 4 silicon wafer diced into smaller dimensions.

Our wafer dicing process flow ends with the diced pieces secured on blue NITTO tape.

Please send us your specs and quantity so we may quote you!

 

diced silicon on insulator wafers

UniversityWafer, Inc's silicon wafer dicing service including cutting wafers with a wafer dicing saw and laser dicing silicon wafers.


Our wafer dicing techniques do not damage the wafers and provide a smooth clean surface.

Below is a 4 silicon wafer diced into smaller dimensions.

Our wafer dicing process flow ends with the diced pieces secured on blue NITTO tape.

Please send us your specs and quantity so we may quote you!

 

diced silicon on insulator wafers

New Laser Dicing Service

We have a new laser dicing abilities. Below are typical researcher questions regarding how we can help them.

General remark: please note that after laser processing/cutting some solid product of ablation may remain along the kerf. Sometimes it may be easily removed (I did that on a silicon wafer covered with a thin SiO2 layer after cutting  the TEST inscription), but for other materials/structures it is a matter of our process development.  

Researcher

We are very interested in the laser diving service. If we provided you with solar cells, would you be able to cut them?

UniversityWafer, Inc.

Researchers

A) Yes, silicon solar cells may be laser processed. They may be laser cut through or it may be cut - lets say - half of its thickness and then broken to avoid contamination of the front side surface.

what does a diced bonded wafer look like

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Researcher:

Q) Thanks for the information regarding laser cutter! We are very interested to know more! We are in need of cutting 1” fused silica wafer on which we have multiple patterns into individual chips (the same as semiconductor chips) These individual patterns have 0.8mmx1mm area on 170um glass wafers. Would you please give me some estimate of the cost for small number of wafers (say 2 including 16 chips on each)?

UniversityWafer, Inc.

A) The requested cutting is possible. Is there sufficient spacing between chips? For fused silica I expect UV laser would be useful, perhaps some tests would be necessary. We haven't tried that material before, so it is hard to predict results and estimate cost. Can you send us a sample for tests?

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Researchers:

Q) Is it possible to make grating structure on Si wafers using laser diving? If yes, then what will be the minimum spacing which can be fabricated?

UniversityWafer, Inc.

A) I think grating with spacing about 200um is possible. Please see the photos.

Note: there are some small dots visible in the pictures, these are laser-generated particles, they are normal for any laser processing.

 

How does Laser Dicing Silicon and Other Substrates Work?

Below are Frequently Asked Questions (FAQs) and Answers.

1) Laser Dicing Question:

If you start with a perfectly clean Si wafer and dice it into ~20mm squares, how much would be the particle count on the dies?

 

Answer:


Please see the microscope images; there are particles in close vicinity of the kerf. To reduce I would suggest cutting the wafer half (maybe 2/3?) of its total thickness and then breaking it. The benefit of that approach is that you maintain your 1x1mm samples clean on one side (without the residues caused by ablation). Please see the pictures. What is the diameter of the wafer?

 

quality of laser dicing silicon

Laser Dicing Quality

2) Laser Dicing Question

What about paricle generation / contamination during this process?

 

Answer:


After laser processing, the substrate is contaminated by the ablation products, especially in the vicinity of kerf. You may consider using some protective layer on your samples or the cut may be done on the bottom surface so that the sample is being cut half of its thickness and then broken.

3) We have a RFQ for dicing service, please advise if you can provide the service.

We will ship the glass substrate to you for dicing. Dicing: the glass substrates (100x100x0.5 mm3 / 5 sheets) into small pcs (10x10mm2) Will there be any yield loss during the dicing? What is the leadtime?

 

Answer:

 

Generally, cutting of soda-lime glass (but not the fused silica) is possible using our UV laser. Is there any layer on the glass? I expect no risk of losses during dicing. I would need 10 working days to do processing and 10 days for shipping, the cost would be $ 0 each / substrate

5) What is the critical dimension for your laser spot? 

Answer:


100um cutting line, 100um spacing. Please see the microscopy image.

 

laser dicing microscopy image

6) Can you cut elliptical shapes from sapphire wafers?

I am interested in small ellipses. For example: minor axis 10mm, major axis 20mm. I do this in my lab with CO2 laser, but perhaps you can offer good competitive service.

 

Answer:

Yes, elliptical shapes are possible. However sapphire is transparent to both IR and UV beam, therefore we have no possibility to process that material with our laser beams (IR=1060nm, UV=355nm).

 

Dicing Strengths Include:

  • Make cuts as small as 25 microns wide
  • Perform trenching with variations in depth to < 5 microns over a 4" cut
  • Process wafers as thin as 50 microns
  • Cut wafers as thick as 10 mm
  • Handle wafers as large as 300 mm
  • Cut die as small as 100 microns square
  • Place cuts inside of cuts to create a custom trench profile
  • Make standard entry cuts and plunge cuts
  • Ship in waffle packs, gel packs and on tape & ring

Below are just a few dicing applications that clients have used us for.

dicing silicon wafers for device fabrication

Dicing Silicon Wafers

Nanotechnology Dicing

  • Micromachining of 75 micron thick Nitinol wire. The wire was cut into 1.8 mm lengths and 3 notches were cut into the sides of the piece. The notches were 38 microns deep and 175 microns wide with 2 notches placed on the opposite side from the third.
  • Micromachining of various sizes of Nitinol springs and tubes.

Biotechnology Dicing

  • Cutting of 750 micron diameter glass and ceramic tubes.
  • Cutting of custom sized microscope slides with delicate surface processing.

Photonics/Optics Dicing

  • Sawing of 1/4" thick quartz photomask.
  • Sawing Silicon/Pyrex material with a special blade to provide an 8 degree sidewall.
  • Providing "near Polished" cuts to eliminate a polishing step for the end customer.

Semiconductor Dicing

  • Delivering cut silicon pieces on non-tack tape to facilitate an automatic pick and place process.
  • Dicing of wafers with very fragile bumps.
  • Cutting and picking of die pieces from a 50 micron thick wafer.

what does a diced silicon wafer look like?

We can dice your wafer or ours for all applications.

Other Industries

  • Placing high aspect ratio cuts in Ferrite toroids. (50 microns wide and 3.25 mm deep).
  • Precision routing of very small printed circuit boards from panels.

Typical Diced Silicon Wafers

The below image typifies what a diced wafer looks like.

what does a diced silicon wafer looks like