Patent ID: 7411142
Filing Date: 2008-08-12
Classification: H01H

Abstract:
1. A keypad comprising: a light guide layer into which light travels from one side surface to another side surface of the light guide layer; at least one key button being disposed on an upper surface of the light guide layer; a lower elastic layer being disposed on a lower surface of the light guide layer, located opposite the upper surface, wherein the side surfaces of the light guide layer are disposed between the upper and lower surfaces of the light guide layer; at least one protrusion being formed on a lower surface of the lower elastic layer; at least one reflective pattern being formed on the light guide layer and partially reflecting the light traveling into the light guide layer toward the key button; and at least one light emitting device positioned to face the one side surface of the light guide layer and adapted to couple light into the light guide layer, wherein the key button, the reflective pattern and the protrusion are aligned along a thickness direction of the keypad.