Keycap, illuminating keyswitch having the same and method for manufacturing the same

An illuminating keyswitch, comprising:

• a base plate;
• a circuit board disposed on the base plate;
• a light emitting element electrically connected to the circuit board;
• and
• a keycap disposed on the light emitting element;
• wherein the keycap comprises a first injection layer and a second injection layer;
• the first injection layer has a top surface, a bottom surface, and a side surface between the top surface and the bottom surface, wherein a width of the top surface of the first injection layer is smaller than a width of the bottom surface of the first injection layer;
• the second injection layer comprises a main body, and a peripheral sidewall extending downwardly from the main body and having a bottom edge facing the base plate;
• the light emitting element is configured to correspond to the first injection layer or the second injection layer;
• a light transmittance of the first injection layer is different from a light transmittance of the second injection layer;
• wherein the bottom surface of the first injection layer comprises a first surface portion and a second surface portion, and the second surface portion located between the first surface portion and the main body of the second injection layer is protruded from an adjacent bottom surface of the second injection layer;
• wherein the main body of the second injection layer covers the side surface of the first injection layer, and a distance between the base plate and the bottom surface of the first injection layer is greater than a distance between the base plate and the bottom edge of the peripheral sidewall.