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Spot-facing(凹凸)/etching Process
---->Engraved glass has wide range of possibilities.

Chemical Spot-facing(凹凸)/etching Process engraves the glass to your desired depth without penetrating the glass.

The chemical etching process results in smooth to the touch glass with a flawless, exquisite finish. Its properties make it perfect for fingertip control in touch panel applications.



Chemical Spot-facing(凹凸)/etching Process produces glass edges that is smooth to the touch compared with mechanical grinding Process.

Excellent Design

NSC’s Chemical Spot-facing(凹凸)/etching Process retains the clarity and transparency of the glass after etching. It is customizable which makes it an excellent choice for those seeking versatility in design.


Chemical Spot-facing(凹凸)/etching process retains the strength of the glass as the chemical etching process does not cause micro-cracks in the glass commonly found in other mechanical grinding methods.


Chemical Spot-facing(凹凸)/etching Process can be used to engrave multiple sections of various shapes simultaneously. Simultaneous etching feature ensures same process time required for small or large batch etching.(Prices vary depending on quantity of etching and process time.)

Texture and Hygiene

Both plastics and glass are commonly used as protection for touch panel type display. However, glass panels offer the following advantages:

    -Refined finish of the glass adds a touch of class to the finished product
    -Easy maintenance
    -High damage resistance
    -High chemical resistant properties of the glass protects it from disintegrating effect of alcohol based disinfectants. This gives the touch display extra protection against external impurities.

    Available Sizes

    Chemical Spot-facing(凹凸)/etching Process can accommodate up to 730 x 920 mm.

    Effects of Spot-Facing/Etching Process

    Control parts of touch panel※1,Track guidance at the switch parts of the touch panel.※2,enabling tactile sensing of operation

    Spot-faced Touch Switches
    ▲ Examples of Spot-faced Touch Switches

      The finger can follow the engraved pattern as a guide, allowing the user to operate the touch panel without looking.

      Track guidance feature can be applied for use in instances when the eyes are focused on other objects. For example, drivers can have their eyes focused on the roads if track guidance is available on the touch panel of car navigation systems. Enhanced level of safety can be achieved when track guidance feature is paired with audio feedback.

      Track guidance feature can be used in devices aimed for use by the blind or visually challenged.

    ※1:Capacitance type、※2:Resistance film type , Capacitance type etc

    Uses and Applications, Specific Examples

    Specific example
      Spot-facing process for touch-panel controls

      Wheel controls, vertical sliders, and other controls of any design can be spot-faced.

      Spot-facing process for track guidance

      Improving the design quality of glass products
    • The spot-facing process can engrave a customer's logo or company name on the surface of glass.

    Application example

    -Apply for Medial device for blind touch operation.

    -Replace with membrane switch for household electrical goods such as Rice cooker, Microwave,Refrigerator, Washing machine etc.

    Rice cooker

    -Added the spot-faced patterning on the cover glass used for Smart phone, Braille Tablet, Payment Terminal etc.

    spot-faced cover glass

    Braille cover glass

    -Replace with air conditioner control panel or volume controler for audio instrument for Automotive.

    air conditioner controller for automotive

    Available Glass Substrates

      -Soda glass
      -Strengthened glass
      -Non-Alkaline Glass

    • At NSC, we have a proven track record of performing chemical spot-facing with many types of glass in addition to those mentioned above.