BACKLIT KEYBOARD, BACKLIGHT MODULE AND ASSEMBLY METHOD THEREOF
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United States of America Patent
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Issued Date -
Nov 24, 2016
app pub date -
May 17, 2016
filing date -
May 17, 2016
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Abstract
A backlit keyboard includes a baseplate, a light guide plate, a light source, a reflective layer, and a light mask layer. The light mask layer is disposed between the baseplate and the light guide plate. The edge of the light mask layer forms a U-shaped reflective concave pointing downward and extending around the lateral surface of the light guide plate, and a portion of the lateral surface horizontally projects on the U-shaped reflective concave, thus allowing the U-shaped reflective concave to reflect lights leaving the lateral surface of the light guide plate back to the light guide plate. A backlight module for providing backlights to the backlit keyboard and an assembly method of the backlight module are also provided.
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