KEYBOARD

摘要

A keyboard includes a transparent board, keyswitches, and a backlight module. The keyswitches could move upward and downward relative to the transparent board. At least one keyswitch includes a cap and a light exciting layer disposed in a transparent concave portion of the cap. The backlight module is disposed under the transparent board and includes a blue-light emitting diode, a reflection sheet, and a light guide plate having a light entrance surface, a light exit surface, and a bottom surface. The blue-light emitting diode is disposed corresponding to the light entrance surface for emitting light into the light guide plate. The reflection sheet is disposed on the bottom surface for reflecting light in the light guide plate to emit out of the light exit surface and then pass through the transparent board and the transparent concave portion, so that the light exciting layer could be excited to emit light.

主权项

1. A keyboard comprising:
a transparent board; a plurality of keyswitches disposed on the transparent board and movable upward and downward relative to the transparent board, at least one of the plurality of keyswitches comprising:
a cap having a transparent concave portion; anda light exciting layer disposed in the transparent concave portion; and a backlight module disposed under the transparent board, the backlight module comprising:
a light guide plate having a light entrance surface, a light exit surface, and a bottom surface, the bottom surface being adjacent to the light entrance surface and opposite to the light exit surface;at least one blue-light emitting diode disposed at a position corresponding to the light entrance surface for emitting light into the light guide plate via the light entrance surface; anda reflection sheet disposed on the bottom surface of the light guide plate for reflecting light in the light guide plate to emit out of the light exit surface and then pass through the transparent board and the transparent concave portion to be incident into the light exciting layer, so that the light exciting layer could be excited to emit light.