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Hello
Is there recommended spec like a below about capsensor hole for LED backlight?
Please confirm attached file.
- Hole size
- Horizontal gap between LED and capsense pattern
- Capsense size and area
And is there recommended spec of vertical gap between LED and capsense pattern?(in other words, PCB board thickness)
Best Regards.
Yutaka Matsubara
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Hello,
There is no specific guidelines for the LED backlight hole size for the Capsense buttons.
But the general recommendation is not have a large hole(>5mm) at the centre, because this will reduce the coupling.
Thanks,
Ranjith
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Matsubara-san,
Try to have gap size equal to overlay thickness, but no smaller than 0.5 mm, and no larger than 2 mm. Also have the button diameter around 10 mm so that there is sufficient coupling when finger is pressed.
Thanks,
Yuva.