| 摘要 |
A thin film keypad (10) includes a retainer sheet (20) and a plurality of keycaps (26) molded onto keycap attachment regions on the retainer sheet such that the keys are mechanically secured to the retainer sheet. The retainer sheet (20) is made of a thin film material, such as polycarbonate or polyester, and each keycap attachment region includes at least one hole and/or at least one retainer anchor portion (32). The keycaps (26) are molded from a plastic material, such as polycarbonate or polyester, ABS or a polycarbonate/ABS blend. The thin film material is placed in a molding tool and the plastic material is injected into a keycap mold cavity such that the plastic material flows through the holes and/or around the retainer anchor portions (32), thereby anchoring the keycaps (26) to the retainer sheet (20). |
