| US 7,414,213 B2 | ||
| Manufacturing method of keypad for mobile phone and keypad manufactured thereby | ||
| Yong-Wook Hwang, Suwon-si (Korea, Republic of); Young-Ki Kim, Yongin-si (Korea, Republic of); Shin-Chul Kang, Seoul (Korea, Republic of); Hyun-Jung Jeong, Seongnam-si (Korea, Republic of); Chang-Youn Hwang, Suwon-si (Korea, Republic of); Woo-Seok Chin, Suwon-si (Korea, Republic of); and Yoon-Hee Lee, Incheon (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., (Korea, Republic of) | ||
| Filed on Aug. 08, 2007, as Appl. No. 11/835,999. | ||
| Claims priority of application No. 74834/2006 (KR), filed on Aug. 08, 2006. | ||
| Prior Publication US 2008/0035460 A1, Feb. 14, 2008 | ||
| Int. Cl. H01H 3/12 (2006.01) | ||
| U.S. Cl. 200—341 [200/314; 341/20; 345/170; 29/622] | 18 Claims |
| 1. A method for manufacturing a keypad which includes a plurality of keys, the method comprising the steps of:
(1) forming a key body of a light-transmissive resin material;
(2) coating a high-hardness transparent coating layer onto a surface of the key body in order to increase hardness;
(3) coating a key background color paint layer for color presentation onto a lower surface of the key body;
(4) coating a light-shielding paint layer onto a lower surface of the key background color paint layer in order to prevent
light from being transmitted through a portion other than a light-transmissive marking portion;
(5) forming the light-transmissive marking portion by performing a laser processing according to a shape of a numeral, a character,
or a symbol with respect to the lower surface of the key body so as to remove the key background color paint layer and the
light-shielding paint layer;
(6) forming a metallic vacuum deposition layer on the lower surface of the key body and a lower surface of the light-shielding
paint layer; and
(7) attaching a one of color-printed layer and a cellophane paper to a lower surface of the metallic vacuum deposition layer
so as to present various colors.
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