KEYBOARD BACKLIGHT MODULE ASSEMBLY WITH SIDE LIGHT LEAKPROOF FUNCTION
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United States of America Patent
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Oct 13, 2016
app pub date -
Sep 24, 2015
filing date -
Apr 7, 2015
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Abstract
A keyboard backlight module assembly includes a keyboard carrying a set of key switches and a backlight module including a light-shielding layer, a light-guiding layer and a reflecting layer arranged into a laminated structure. The light-guiding layer has through holes and a light-blocking structure located at three of four peripheral sides thereof and the border edge around each of selected through holes and formed of a part of the external surface of the light-guiding layer using a laser-based processing technique for preventing light leakage and enabling emitted light from LEDs to be concentrated onto key switches of the keyboard.
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