Patent ID: 7662327

Claim:
A manufacturing method of a thin film keypad panel, comprising the steps of: (a) preparing a first mold that includes a first mold cavity with a coarse bottom surface and a second mold cavity with a smooth bottom surface; (b) applying an adhesive in the first mold cavity and the second mold cavity; (c) coating a carrier onto the adhesive; (d) rolling the carrier and leveling the adhesive in the first mold; (e) performing a ultraviolet projection to the first mold to cure the adhesive to form a keypad layer on the carrier; (f) filming a ground color layer on the carrier, and the ground color layer forming a pattern of hollow characters, numbers or different symbols; (g) filming a function color layer on a surface of the ground color layer; (h) filming a font color layer on a surface of the ground color layer and the function color layer; and (i) putting the formed keypad layer and silicon into a second mold for a hot pressing process to combine the keypad layer with silicon and form an elastic layer by silicon.