Sensor for measuring living body information and keypad assembly using the same
AssigneeSamsung Electronics Co., Ltd.
InventorsJung-Taek Oh, Dong-Kyoon Han
Life of this patent
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Abstract
A sensor for measuring living body information and a keypad assembly including the sensor includes a light guide panel for guiding a first light. A light extracting pattern is provided on the light guide panel for outputting the first light guided by the light guide panel to an exterior of the light guide panel. A light coupling pattern is provided on the light guide panel for changing a proceeding direction of a second light incident from the exterior of the light guide panel, so that the second light is guided by the light guide panel.
Claims20
A sensor for measuring living body information, the sensor comprising:
- a light guide panel for guiding a first light;
- a light extracting pattern arranged on the light guide panel, for outputting the first light guided by the light guide panel to an exterior of the light guide panel;
- and
- a light coupling pattern arranged on the light guide panel, for changing a proceeding direction of a second light incident from the exterior of the light guide panel so that the second light is guided by the light guide panel.
A keypad assembly comprising:
- a key sheet including at least one key top;
- a sensor including a first light guide panel for guiding a first light, a first light extracting pattern for outputting the first light toward the key sheet, and a light coupling pattern for changing a proceeding direction of a second light incident from the key sheet so that the second light is guided by the first light guide panel;
- a second light guide panel including a second light extracting pattern for guiding a third light and outputting the third light toward the key sheet;
- and
- a switch board including at least one switch.
Dependencies are inferred from the claim text.