Spin Coater and Film Thickness

A spin coater uses the centrifugal force of high-speed rotation to form a coating film on a flat substrate. How the ideal coating film is formed depends largely on the capabilities of the machine and the configuration settings made by an experienced engineer.
Then, the spinning program matters most.
Our spin coaters offer a variety of advanced settings to meet your needs. Our spin coaters employ a 10-step system, and up to 100 patterns of recipes are programmable (10 steps / 100 patterns). Rotation speed, acceleration/deceleration time and hold time can be set simultaneously in a single-step operation, allowing you to program the desired configuration easily.
The above specifications are standard on all models. However, adding necessary options or customization makes it possible to create an unprecedented spin-coating environment with the customized spin coater.
If you are looking for a spin coater that can perform an accurate test and minimize unevenness in film thickness, please consider our spin coater. Our spin coaters can perform the wet film coating with the film thickness ranging between 100 Å and 100 µm.
If you are wondering if your chemical solution and substrate are compatible with our spin coater, we can perform a sample test. Please send us your substrate and solution. Or we can perform the test at your site.

How Spin Coater Uniformly Produces Coating Film

While any method requires skill to achieve a consistent film thickness, a spin coater efficiently and uniformly produces a high-quality coating film.
Coating conditions vary not only with the viscosity of the chemical solution but also with changes in temperature and other environmental factors. The accuracy of the desired uniformity varies by customer. However, the more sensitive the substrate and chemical solution, the less uniform the film thickness will be with the slightest change. Slight variations can change the conditions for film foaming, resulting in uneven film thickness.
Engineers search for appropriate conditions by programming various conditions and conducting repeated experiments to solve these problems. Improving the performance of the spin coater and arranging the environment where the spin coater is installed is also effective.
For example, by adopting the automatic dripping function, the amount and position of chemical solution instillation can be adjusted, which is otherwise shaky with manual operation. By selecting the instillation mechanism that best suits the instillation volume and accuracy required, the spin coater can be made easier to use.
If you need to minimize changes in film thickness due to temperature rise inside the cup caused by continuous operation, it is effective to cool the spindle section with the chiller water. Continuous operation is facilitated if environmental changes inside the cup are suppressed by removing exhaust air and installing a waste port to remove liquid accumulated inside the cup. Film thickness will be more uniform if a precision cooler or ionizer is installed in the spin coater environment.
A heated spin coater is recommended if you want to spin-coat while using heat to increase extensibility, such as wax. A high-speed spin coater may be helpful when the viscosity is high.
For manufacturing applications, docking a spin coater with a substrate transfer robot can improve efficiency.
We are proud to be able to assist customers facing various issues by utilizing our accumulated experience as a spin coater manufacturer. Please contact us for more information.
スピンコーターの膜厚とは
塗膜を効率よく均一に生成するスピンコーター
(スピンコート機)

How to Select Spin Coater

A spin coater is used in various fields, including semiconductors, metals, and lenses. In addition to the efficient production of coatings, they are also used for spin-edging cleaning and dry coating.
Uniformity and thickness of the coated film is an issue in all applications. However, it is important to use a spin coater and sample stage with specifications that match the viscosity and properties of the chemical, as well as the material and size of the substrate. Otherwise, the task will be difficult, and you will not achieve effective spin-coating results.
That said, you may find something missing when you start the selection process and review the specifications. Then, we can provide the customized spin coater.
It is not always easy to find a spin coater that meets your needs due to budget constraints. Some may consider a pre-owned model. Please contact us before doing so. You will be satisfied with our product based on our highly proven spin coater technology, development, sales performance and after-sales service.
We will propose a spin coater and sample stage that best meets your needs from the perspective of a spin coater manufacturer.
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A spin coater can efficiently produce a coating film. Whether the coating film can be produced uniformly depends on conditions such as the viscosity of the chemical solution and the temperature…
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Conclusion

  1. To achieve uniform film thickness, minimizing changes in spin-coating conditions is necessary.
  2. Adding options to the spin coater can minimize environmental changes.
  3. It is also effective to adjust the environment at the installation location of the spin coater.
  4. "Automatic dripping control" also effectively adjusts the instillation amount position, which is otherwise shaky in manual operation.
  5. The heat generated by the motor during continuous operation should also be considered.
  6. Improving the sample stage is also effective for square and thin substrates.
A spin coater excels at producing high-quality coating films efficiently and uniformly, but it takes skill to achieve a consistent film thickness without irregularities.

Depending on the accuracy of the desired film thickness, it may be necessary to not only rely on the engineer's experience with spin coating programs and adjusting the instillation volume and position but also to improve the performance of the spin coater and the environment of the installation site.
There are also methods to further improve efficiency for manufacturing applications by installing an automatic dropper or docking with a substrate transfer robot.
Our experienced staff is available to assist you with your various questions. Please do not hesitate to contact us.

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