Touch-sensitive input device, touch screen device, mobile device and method for operating a touch-sensitive input device
AssigneeSony Ericsson Mobile Communications AB
InventorGeorg SIOTIS
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Abstract
The invention relates to a touch-sensitive input device, a touch screen device, a mobile device and a method for operating a touch-sensitive input device to provide for a more realistic haptic feedback to a user in response to an input. The touch-sensitive input device comprises a first layer, a second layer facing said first layer, said first and second layers defining a cavity accommodating a substance capable of flowing, and an actuator device arranged to vary the pressure of said substance in said cavity so as to provide haptic feedback to a user touching a surface of said touch-sensitive input device.
Claims14
Touch-sensitive input device, comprising
- a first layer;
- a second layer facing said first layer, said first and second layers defining a cavity accommodating a substance capable of flowing;
- and
- an actuator device arranged to vary the pressure of said substance in said cavity so as to provide haptic feedback to a user touching a surface of said touch-sensitive input device.
Method for operating a touch-sensitive input device having first and second layers forming a cavity accommodating a substance capable of flowing, the method comprising the steps
- sensing a finger or input instrument above said first layer;
- and
- varying the pressure of said substance in said cavity so as to provide haptic feedback to a user touching a surface of said touch-sensitive input device.
Dependencies are inferred from the claim text.