Operating device for an electrical appliance and electrical appliance having such an operating device
First Claim
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1. An operating device for an electrical appliance, with a liquid crystal display (“
- LC display”
) having two parallel, superimposed plates, said LC display being constructed for displaying individual segments or symbols, said operating device having touch switch sensor elements, wherein on one side of one of said plates a semiconductor chip is placed thereon and said semiconductor chip functions to control said LC display and evaluate data from said sensor elements, wherein said LC display and said semiconductor chip are constructed as a module, and wherein for electrical connection to said electrical to said electrical appliance, said operating device only has connections for a supply voltage, for ground and for a serial bus for control of a power part of said electrical appliance by said semiconductor chip.
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Abstract
In an operating device for a cooktop with a liquid crystal display with two LCD plates, on the top of the lower of the two LCD plates is directly applied a microcontroller in the form of semiconductor chip, for example using COG technology. The semiconductor chip not only controls the LCD, but there are also provided capacitive sensor elements located on said LCD that are evaluated by the semiconductor chip, so that an independent module is formed. The module can be connected by suitable electrical connections to the cooktop and can at least partly or completely control the same.
29 Citations
17 Claims
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1. An operating device for an electrical appliance, with a liquid crystal display (“
- LC display”
) having two parallel, superimposed plates, said LC display being constructed for displaying individual segments or symbols, said operating device having touch switch sensor elements, wherein on one side of one of said plates a semiconductor chip is placed thereon and said semiconductor chip functions to control said LC display and evaluate data from said sensor elements, wherein said LC display and said semiconductor chip are constructed as a module, and wherein for electrical connection to said electrical to said electrical appliance, said operating device only has connections for a supply voltage, for ground and for a serial bus for control of a power part of said electrical appliance by said semiconductor chip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- LC display”
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16. An electrical appliance comprising an operating device comprising a liquid crystal display (“
- LC display”
) having two parallel, superimposed plates, said LC display being constructed for displaying individual segments or symbols, said operating device having touch switch sensor elements, wherein on one side of one of said plates a semiconductor chip is placed thereon and said semiconductor chip functions to control said LC display and evaluate data from said sensor elements, wherein said LC display and said semiconductor chip are constructed as a module, said electrical appliance comprising a cooktop with a glass ceramic heating area and said operating device is located in an outer area or frame area of said cooktop and is fixed directly to a top of said glass ceramic heating area.
- LC display”
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17. An electrical appliance comprising an operating device comprising a liquid crystal display (“
- LC display”
) having two parallel, superimposed plates, said LC display being constructed for displaying individual segments or symbols, said operating device having touch switch sensor elements, wherein on one side of one of said plates a semiconductor chip is placed thereon and said semiconductor chip functions to control said LC display and evaluate data from said sensor elements, wherein said LC display and said semiconductor chip are constructed as a module, said electrical appliance comprising a hob with a glass ceramic hob plate and said operating device is located next to said hob directly neighboring said glass ceramic hob plate.
- LC display”
Specification