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US 2007/0175744 A1Published application
Keypad and keypad assembly
AssigneeSamsung Electronics Co., Ltd.
InventorsJoo-Hoon Lee, Sun-Tae Jung, Kyoung-Youm Kim, Byung-Duck Cho, Dong-Hoon Jang
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Abstract
A keypad includes a light guide panel, the interior of which light propagates through, a film positioned on the upper surface of the light guide panel and having at least one key button positioned on the upper surface thereof, and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light, which propagates through the interior of the light guide panel, towards the key button.
Claims44
A keypad comprising:
- a light guide panel for propagating light therethrough;
- a film disposed on the upper surface of the light guide panel and having at least one key button disposed on the upper surface thereof;
- and
- at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light propagating through the interior of the light guide panel towards the key button,
- wherein the film and the light guide panel are spaced apart from one another.
2 more elements
A keypad assembly comprising:
- a keypad having a light guide panel for propagating light therethrough, a film disposed on the upper surface of the light guide panel with at least one key button provided on the upper surface of the film,
- and at least one reflective pattern fixedly positioned with respect to the light guide panel to reflect a part of the light propagating through the interior of the light guide panel towards the key button;
- and
- a switch board having at least one switch formed on its upper surface, which faces the keypad, wherein as the key button is pressed, a portion of the keypad deformed towards the switch board to activate the switch,
- wherein the film and the light guide panel are spaced apart from one another.
2 more elements
A portable terminal comprising:
- a switch board having at least one switch positioned on the upper surface thereof;
- a keypad having a light guide panel with upper, lower, and lateral surfaces;
- and
- at least one light emitting device positioned adjacent to at least one of the lateral surfaces of the light guide panel, wherein the keypad further comprises:
- a film positioned on the upper surface of the light guide panel and having at least one key button provided on the upper surface of the film;
- and
- at least one reflective pattern locally formed on the light guide panel to reflect a part of light, which propagates through the interior of the light guide panel, towards the key button,
- wherein the film and the light guide panel are spaced apart from one another.
5 more elements
Dependencies are inferred from the claim text.