Aside from requiring precise control of the blade and cutting conditions, it is important to understand the material properties of a wafer before choosing a singulation method. Conducting characterization tests like X-ray diffraction and scanning electron microscopy is an excellent way to determine if the material of a wafer will pose any challenges for mechanical sawing.
Dry Wafer Dicing
Dry Wafer Dicing Services
process is an important step in the manufacturing of semiconductors and
integrated circuits. It is vital to achieve a high yield of functional,
undamaged chips per wafer, as this will minimize production costs and increase
efficiency.
Different dicing methods offer different levels of
performance and quality, so it is critical to select the correct one for your
specific application. The dicing method you choose will depend on factors like
the material properties of the wafer, the dimensions and features of the
integrated circuits, and your required precision and accuracy.
Diamond dicing blades, which are the most common type of
dicing blade, have a steel core coated with diamond abrasive particles and are
available in various designs. They are often hubbed or hubless and can be
fabricated with different diamond grit sizes, concentrations, and bonding
materials to optimize their performance for different applications.
Resin-bonded dicing blades have a resin-based bonding material that holds the
abrasive particles and have lower cutting forces than diamond dicing blades.
Wet Wafer Dicing
Wafer dicing is the process of separating individual
integrated circuits or chips from a semiconductor wafer without damaging their
delicate structures and circuits. This critical process is essential for the
production of electronic devices and components used in a wide range of
industries. As demand for high-performance and smaller electronic devices
continues to grow, wafer dicing technology has evolved to meet these needs.
Statistical process control (SPC) is an important tool for
optimizing the wafer dicing process and ensuring consistent quality results. By
analyzing data on a regular basis, manufacturers can identify and address
issues with a particular dicing method before they become a problem.
SPC can help manufacturers improve process consistency and
achieve a higher yield of functional, undamaged die. This can reduce
manufacturing costs and allow manufacturers to produce more chips at a faster
rate. In addition to SPC, regular calibration and maintenance of dicing
equipment is vital for maintaining accuracy and precision.
Semiconductor Dicing Services
With chip sizes continuing to shrink, the quality and
precision of dicing is becoming more critical than ever. DISCO specializes in
thin wafer dicing using innovative machines, blades and applications to achieve
superior results.
A key part of a successful dicing process involves regular
calibration and adjustments to the dicing equipment. This allows for optimal
processing conditions to be maintained over time, resulting in consistent,
high-quality dicing.
This includes adjusting the dressing system that exposes the
diamond abrasive grit to produce an optimized surface for cutting performance.
It also includes optimizing the motion control system that translates the
desired cutting pattern into precise movements for the dicing machine.
Performing these tasks regularly and with the proper care can significantly
improve the productivity of the dicing process. This, in turn, leads to greater
yields and improved product quality for the manufacturing of semiconductor
devices.
Custom Dicing Services
A key step in semiconductor fabrication is substrate
separation, also referred to as dicing. This involves scribing and breaking the
substrate into individual pieces with well-defined edges. This is accomplished
with a diamond-finished scribing wheel that generates minimal heat, reducing
the chance of damaging the substrate material.
Achieving precision with a blade dicing process requires
complex interactions between influencing variables such as the size and
proportion of the diamond abrasive, the matrix structure and bonding strength,
and the spindle power. One intervention to support blade dicing performance is
trueing and dressing of the abrasive. Truing a diamond blade increases the
cutting edge sharpness, mitigates chipping levels and prevents surface damage
[26].
Valley can provide precise Wafer Dicing Services for
bonded wafers such as SiC-on-Glass or GaAs-on-Glass. Our dicing equipment can
handle materials up to 6-8 mm thick. We can cut etched patterns or circuitry on
your wafers, and we can also offer high-volume contract dicing services.
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