Abstract: A thin-type keycap structure comprising a key cap layer and a plastic film on the upper surface of the key cap layer. The thin-type keycap structure and the metal dome on a PCB are assembled to form a keypad structure. The thin-type keycap structure is made through compression molding of the plastic film and a resin together. The surface of the plastic film may be embossed before the compression molding.

Abstract: The self-luminescence keypad structure includes a backlight module and a self-luminescence keycap structure including a self-luminescence material. For example, a self-luminescence layer comprising the self-luminescence material is disposed, at least a member of the self-luminescence keycap structure is allowed to include the self-luminescence material, or a hard coat including the self-luminescence material is coated on the surface, thereby the keypad structure has the self-luminescence function upon receiving a light from the backlight module. Accordingly, in the dark, the figures on keycaps can be seen even though the backlight is turned off, and thus the electrical power saving can be achieved and the battery lifetime can be increased.

Abstract: A method of making a thin-type keycap structure including performing a compression molding on a plastic film and a resin together with a mold including a top mold and a bottom mold to form a compression-molded laminate, in which a first surface of the plastic film faces the bottom mold, the resin faces the top mold, the compression-molded laminate includes a plastic film surface and a resin surface, the plastic film surface includes a plurality of bulged portions corresponding to the first recessions of the surface of the bottom mold, and the bulged portions each include a portion of the plastic film and a portion of the resin.

Abstract: A thin-type keycap structure comprising a key cap layer and a plastic film on the upper surface of the key cap layer. The thin-type keycap structure and the metal dome on a PCB are assembled to form a keypad structure. The thin-type keycap structure is made through compression molding of the plastic film and a resin together. The surface of the plastic film may be embossed before the compression molding.