Light-emitting module for touchpad

A light-emitting module for a touchpad, comprising:

• a circuit board, wherein the circuit board has a first light-emitting element;
• a light-blocking sheet, wherein the light-blocking sheet is arranged on the circuit board, and the light-blocking sheet has a hollow portion and a light-blocking portion;
• and
• a light guide sheet, wherein the light guide sheet is accommodated in the hollow portion, the light guide sheet has a first light incident portion and a light guide portion, the first light incident portion comprises a first side surface, a second side surface, and a third side surface, the first side surface is adjacent to the first light-emitting element, the second side surface and the third side surface are separately connected to the first side surface, an extension of the second side surface and an extension of the third side surface form an angle, the angle is smaller than a light-emitting angle of the first light-emitting element, and the light-blocking portion is arranged adjacent to the second side surface or the third side surface.