Capacitive touch switch and domestic appliance provided with such switch
First Claim
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1. A capacitive touch switch comprising:
- a printed circuit board; and
capacitive detector having an icon-shaped electrode supported by the printed circuit board and connected to the circuit board, wherein the printed circuit board is transparent and is interposed between a planar light guide;
provided with a light source and a non-conductive transparent cover such that the icon-shaped electrode is visible to a user when the light source is actuated;
wherein the capacitive touch switch is placed on a cooking appliance; and
further comprising, in combination, an oven having a transparent door attached to structure of the oven, wherein a user interface with the capacitive touch switch is mounted on the door.
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Abstract
A capacitive touch switch having a printed circuit board and a capacitive electrode connected to the circuit board is disclosed. The printed circuit board is transparent and is interposed between a planar light guide provided with a light source and a non-conductive transparent cover, the electrode being icon-shaped and supported by the printed circuit board.
11 Citations
10 Claims
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1. A capacitive touch switch comprising:
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a printed circuit board; and capacitive detector having an icon-shaped electrode supported by the printed circuit board and connected to the circuit board, wherein the printed circuit board is transparent and is interposed between a planar light guide;
provided with a light source and a non-conductive transparent cover such that the icon-shaped electrode is visible to a user when the light source is actuated;wherein the capacitive touch switch is placed on a cooking appliance; and further comprising, in combination, an oven having a transparent door attached to structure of the oven, wherein a user interface with the capacitive touch switch is mounted on the door. - View Dependent Claims (2, 3, 4)
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5. A domestic appliance comprising:
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an appliance body; and capacitive touch switch including; a printed circuit board; and capacitive detector having an icon-shaped electrode supported by the printed circuit board and connected to the circuit board, wherein the printed circuit board is transparent and interposed between a planar light guide provided with a light source and a non-conductive transparent cover such that the icon-shaped electrode is visible to a user when the light source is actuated; and further comprising;
a transparent door attached to the appliance body, wherein the capacitive touch switch is located on the door. - View Dependent Claims (6, 7, 8)
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9. A domestic appliance comprising:
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an appliance body; and a capacitive touch switch including; a printed circuit board; and capacitive detector having an icon-shaped electrode supported by the printed circuit board and connected to the circuit board, wherein the printed circuit board is transparent and interposed between a planar light guide provided with a light source and a non-conductive transparent cover such that the icon-shaped electrode is visible to a user when the light source is actuated, wherein the light source is a light emitting diode connected to the printed circuit board and mounted on an edge of the light guide; and a door attached to the appliance body, wherein the capacitive touch switch is located on the door. - View Dependent Claims (10)
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Specification
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Current AssigneeWhirlpool Corporation
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Original AssigneeWhirlpool Corporation
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InventorsArione, Ettore, Arena, Giuseppe, Lazzarotto, Roberto
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Primary Examiner(s)Dinh, Tuan T
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Application NumberUS12/247,309Publication NumberTime in Patent Office1,497 DaysField of Search200300-314, 200512-514, 200/600, 361780-782US Class Current361/781CPC Class CodesH03K 17/962 Capacitive touch switchesH03K 2217/96079 using a single or more ligh...
