Patent ID: 11941216
Assignee: PRIMAX ELECTRONICS LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A touch pad with a key input function, the touch pad comprising:
a circuit board, wherein a touch sensing layer is formed on a top surface of the circuit board, and the touch sensing layer comprises plural touch sensing units;
plural LED light-emitting elements arranged between the plural touch sensing units;
a light guide plate located over the touch sensing layer and arranged beside the plural LED light-emitting elements, wherein the LED light-emitting elements receive plural light beams, and the plural light beams are guided by the light guide plate, so that a surface light source is provided; and
a light-transmissible touch structure with plural light-transmissible patterns, wherein the light-transmissible touch structure is located over the plural LED light-emitting elements and the light guide plate, and a touch control operation is performed on the light-transmissible touch structure by the user,
wherein a first touch sensing unit of the plural touch sensing units comprises a first sensing circuit region, a first driving circuit region and a first blank region, and a second touch sensing unit of the plural touch sensing units comprises a second sensing circuit region, a second driving circuit region and a second blank region, wherein a first terminal of a first LED light-emitting element of the plural LED light-emitting elements is transferred across the first sensing circuit region and the first driving circuit region and installed in the first blank region, and a second terminal of the first LED light-emitting element is transferred across the second sensing circuit region and the second driving circuit region and installed in the second blank region.