Why Do Membrane Switches Need Surface Treatment with Matte Oil?

05 Jun, 2023

By hqt

Discover the importance of surface treatment with matte oil for membrane switches. Learn about the benefits, the manufacturing process, and frequently asked questions about this essential component in electronic devices.


Membrane switches play a vital role in numerous electronic devices, providing a user-friendly interface for seamless interaction. To ensure their longevity and functionality, these switches undergo surface treatment with matte oil. In this article, we will delve into the reasons behind the necessity of this treatment, exploring its benefits, manufacturing process, and addressing frequently asked questions related to membrane switches. Join us as we uncover the significance of surface treatment with matte oil in enhancing the performance and durability of these essential components.

Benefits of Surface Treatment with Matte Oil

Surface treatment with matte oil offers several advantages that contribute to the overall functionality and longevity of membrane switches. Let’s explore some of these benefits:

1. Enhanced Durability

Matte oil acts as a protective layer on the surface of the membrane switch, shielding it from potential damage caused by external factors such as dust, moisture, and abrasion. This treatment increases the switch’s resistance to wear and tear, ensuring its longevity even under harsh operating conditions.

2. Improved Tactile Feedback

By applying a layer of matte oil, membrane switches acquire a textured surface that enhances tactile feedback for users. This textured finish provides a comfortable feel and a better response when interacting with the switch, contributing to an overall positive user experience.

3. Resistance to Fingerprints and Smudges

One common issue with membrane switches is the appearance of fingerprints and smudges on the surface, which can hinder visibility and affect the device’s aesthetic appeal. Surface treatment with matte oil helps to minimize the visibility of fingerprints and smudges, keeping the switch clean and maintaining its visual appeal.

4. Increased Chemical Resistance

Certain environments expose membrane switches to chemical substances that can potentially degrade their performance. Surface treatment with matte oil improves the switch’s resistance to various chemicals, making it suitable for applications where exposure to corrosive agents is a concern.

5. Optimal Light Transmission

Membrane switches often incorporate backlighting to enhance visibility in low-light conditions. Surface treatment with matte oil helps to optimize light transmission, ensuring even illumination across the switch’s surface and enhancing visibility for users.

Manufacturing Process of Matte Oil Surface Treatment

The surface treatment process with matte oil involves several steps to achieve the desired outcome. Let’s take a closer look at the manufacturing process:

  1. Preparation: The membrane switch is thoroughly cleaned and prepared for surface treatment. This step involves removing any contaminants or impurities that may affect the adhesion of the matte oil.
  2. Primer Application: A primer is applied to the surface of the membrane switch, promoting better adhesion of the matte oil. The primer acts as a bonding agent between the switch and the matte oil layer.
  3. Matte Oil Application: The matte oil is then carefully applied to the primed surface using specialized techniques. This ensures an even distribution of the oil across the switch’s surface, resulting in a consistent and uniform matte finish.
  4. Curing and Drying: After the matte oil application, the membrane switch is subjected to a curing process, typically involving heat or UV light. This process facilitates the drying and hardening of the matte oil layer, ensuring its adhesion and durability.
  5. Quality Assurance: The treated membrane switch undergoes rigorous quality control measures to ensure the effectiveness of the surface treatment. This includes testing for adhesion, tactile feedback, chemical resistance, and visual appearance.

Frequently Asked Questions (FAQs)

Here are some frequently asked questions related to the surface treatment of membrane switches with matte oil:

  1. Q: Why is surface treatment necessary for membrane switches?
    • A: Surface treatment with matte oil is essential for membrane switches as it enhances durability, improves tactile feedback, and provides resistance to fingerprints, smudges, and chemicals.
  2. Q: How does matte oil improve the tactile feedback of membrane switches?
    • A: Matte oil creates a textured surface on the membrane switch, enhancing tactile feedback by providing a comfortable feel and improved response during use.
  3. Q: Can surface treatment with matte oil be applied to all types of membrane switches?
    • A: Yes, surface treatment with matte oil is suitable for various types of membrane switches, regardless of their size or complexity.
  4. Q: Does matte oil surface treatment affect the visibility of backlighting in membrane switches?
    • A: No, matte oil treatment actually optimizes light transmission in membrane switches, ensuring even illumination and enhancing visibility in low-light conditions.
  5. Q: How long does the surface treatment with matte oil last on a membrane switch?
    • A: The durability of matte oil surface treatment depends on the quality of the treatment and the operating conditions. However, with proper care, it can last for an extended period.
  6. Q: Can matte oil surface treatment be re-applied if the switch becomes damaged?
    • A: In some cases, it is possible to re-apply matte oil surface treatment if the switch becomes damaged or worn out. However, it is recommended to consult a professional for the best course of action.


The surface treatment of membrane switches with matte oil plays a crucial role in their performance, durability, and user experience. By providing enhanced durability, improved tactile feedback, resistance to fingerprints and smudges, chemical resistance, and optimal light transmission, matte oil treatment ensures the longevity and functionality of these essential components. Understanding the significance of surface treatment with matte oil empowers manufacturers and users alike to make informed decisions and appreciate the intricate details behind the seamless operation of electronic devices.


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