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Our membrane switches have backlighting options with technologies such as Luminous powder or EL.
EL luminous film is made through a special process with extensive use of electroluminescent sheets.
Tortai Technology can offer our customers kinds of different colors of EL membrane switch, the most
common choice are the blue, blue-green, green . Usually, the membrane circuit posted with LEDs.
The following is a basic process of a EL Membrane Switch： |
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The thickness of membrane switch between 1.0mm and 2.5mm or so. At Tortai, we use the EL light-emitting chip are planar, which thickness are 0.12 - 0.4 mm, the overall thickness of the products complete meet customer’s requirements.
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EL Technical parameters
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Feature |
Item |
Performance |
Condition |
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Electrical |
Operating Voltage |
30-250VAC |
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Best Operating voltage |
90-110VAC |
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Operating frequency |
50~5000Hz |
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Best Operating frequency |
400-1200Hz |
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Current |
0.14mA/cm2 max |
100V 400Hz |
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Power |
2mw/ cm2 max |
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Lighting |
Initial color |
Blue 50cd/ cm2 green 80cd/ m2 |
100V 400Hz |
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Half-life |
＞3000Hr |
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Life Time |
＞25000Hr |
Inverter drive |
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Environmental |
Operation Temperature |
-50℃～60℃ |
5cycles/30min |
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Storage Temperature |
-65℃～85℃ |
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Humidity: |
40° C, 90%~95%, 240hr |
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