Abstract: A pressure module comprises a substrate, a support structure and a pressing membrane. The support structure is connected to the substrate and the pressing membrane to form an accommodating cavity between the substrate and the pressing membrane. An electrode is disposed on a surface of the substrate or the pressing membrane and a variable resistance layer is respectively disposed on the opposite surface of the other of the substrate and the pressing membrane. On application of pressure to the pressing membrane, the pressing membrane is elastically deformed and the variable resistance layer is brought into contact with the electrode to form a contact area and a resistance value between the variable resistance layer and the electrode. The contact area and the elastic deformation is positively correlated.

Abstract: A button structure comprises a keycap, an elastic body, a scissor mechanism, and a piezoresistive film sensor arranged on a support plate. The scissor mechanism and the elastic body are arranged between the keycap and the piezoresistive film sensor. The piezoresistive film sensor comprises a first pressure sensing area and a second pressure sensing area. The elastic body corresponds to the first pressure sensing area and the scissor mechanism corresponds to the second pressure sensing area, such that, when a pressure is applied to the keycap, a first pressure acts on the elastic body to generate pressure on the first pressure sensing area and a second pressure acts on the scissor mechanism to generate pressure on the second pressure sensing area.

Abstract: An electronic keyboard comprises a plurality of keys and a housing comprising a cavity. The cavity accommodates a circuit board, a pressing layer and at least one pressure sensor arranged therein. Each pressure sensor is provided between a lower portion of the cavity and the circuit board, the pressing layer is moveably connected to each of the keys and the circuit board is provided between the pressing layer and the lower portion. Each pressure sensor is connected to the circuit board, and a force-receiving surface of each pressure sensor aligns with a projection area of the corresponding one of the keys.

Abstract: A button structure has a base having a slot and a sensing element inserted into the slot. A pressure concentration element is fixedly connected by bonding to the sensing element and a key cap is mounted to the base. The key cap has a core member fixedly connected to a lower surface of a top plate of the key cap. The lower surface of the core member can be brought into contact with the pressure concentration element on application of a pressure to an upper surface of the top plate, such that the applied pressure is transmitted to the sensing element through the core member and the pressure concentration part. The sensing element is a piezoresistive film sensor.

Abstract: A touch pad, comprises a housing comprising a vibration device, a cover, a capacitive sensing layer electrically connected to a processor and a pressure sensing layer arranged in the housing, also electrically connected to the processor. The capacitive sensing layer is positioned between the cover and the pressure sensing layer. The processor is configured to utilize a signal output from either the capacitive sensing layer or the pressure sensing layer to activate the vibration device.

Abstract: An electronic keyboard comprises a plurality of keys and a housing comprising a cavity. The cavity accommodates a circuit board, a pressing layer and at least one pressure sensor arranged therein. Each pressure sensor is provided between a lower portion of the cavity and the circuit board, the pressing layer is moveably connected to each of the keys and the circuit board is provided between the pressing layer and the lower portion. Each pressure sensor is connected to the circuit board, and a force-receiving surface of each pressure sensor aligns with a projection area of the corresponding one of the keys.

Abstract: A button structure (708) comprises a base (709) comprising a slot (203) and a sensing element (710) inserted into the slot. A pressure concentration element (711) is fixedly connected to the sensing element and a key cap (712) is mounted to the base. The key cap comprises a core member (503) fixedly connected to a lower surface of a top plate (504) of the key cap. The core member comprises a lower surface (506) configured to be brought into contact with the pressure concentration element on application of a pressure to an upper surface of the top plate, such that the applied pressure is transmitted to the sensing element through the core member and the pressure concentration part.