Print
EL film steals the limelight.
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Below is a description of the process we use to manufacture and integrate El film (in the form of a membrane keypad) into a front panel.


Step 1
First of all, our graphics department produces the printing copy that will be required further down the line for the purpose of making the screen. Here you can see the finished screen after it has been exposed. A paste is applied to this that has been specially developed for the purpose of producing EL films.
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Herst_EL_Folie02 Step 2
The liquid paste is swept over the motif with the blade, so that it seeps through the screen's porous mesh and reaches the film.
Step 3
This involves using a multimeter to measure the EL-film's functional capabilities. The light intensity and any potential printing errors are investigated.
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Herst_EL_Folie03 Step 4
This production step focuses on the laser plotter and consists of manually mounting the EL film on the special assembly support.
Step 5
The film is now cut using a CNC-controlled laser.
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Herst_EL_Folie05 Step 6
The aim of the next production step is to ensure that the connector is plugged into the printed conductors that have been provided for this purpose.
Step 7
Once the actual EL film is complete, it is time to start integrating the intermediate product into the next item (in this case: a front panel). This involves gluing the EL film into the recessed milled pocket that has been provided specifically for this purpose.
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Herst_EL_Folie07 Step 8
Now the actual front foil is stuck over the EL film.
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The final product when it is not illuminated.
The final product when it is illuminated.