Keypad assembly for electronic devices
First Claim
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1. A keypad assembly for electronic device, comprising:
- a PCB;
a light guiding board disposed on the PCB;
a panel disposed on the light guiding board;
a plurality of key panel portions made of transparent material and set in the panel, the key panel portions arranged in a plurality of columns;
a lighting device disposed on the PCB; and
a sensing device disposed on the PCB, the sensing device including a plurality of sensors arranged in a plurality of columns;
wherein the columns of the key panel portions alternate with the columns of the sensors; and
when an object touches or slides on/above an outside surface of one of the key panel portions, the intensity of light sensed by the sensing device changes and thereby causes current generated by ones of the sensors proximate to the key panel portion to be changed, thus the sensing device generates a signal to complete a corresponding information input.
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Abstract
A keypad assembly includes a PCB, a light guiding board disposed on the PCB, a panel disposed on the light guiding board, a plurality of panel portions made of transparent material, set on the panel, a lighting device disposed on the PCB, and a sensing device disposed on the PCB. when an object touches or slides on/above the surface of the panel portion, the intensity of light sensed by the sensing device changes which causes the current of the four sensors to be changed, thus the sensing device generates a signal to complete a corresponding information input.
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8 Claims
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1. A keypad assembly for electronic device, comprising:
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a PCB; a light guiding board disposed on the PCB; a panel disposed on the light guiding board; a plurality of key panel portions made of transparent material and set in the panel, the key panel portions arranged in a plurality of columns; a lighting device disposed on the PCB; and a sensing device disposed on the PCB, the sensing device including a plurality of sensors arranged in a plurality of columns;
wherein the columns of the key panel portions alternate with the columns of the sensors; and
when an object touches or slides on/above an outside surface of one of the key panel portions, the intensity of light sensed by the sensing device changes and thereby causes current generated by ones of the sensors proximate to the key panel portion to be changed, thus the sensing device generates a signal to complete a corresponding information input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification