A variable stiffness film, a variable stiffness flexible display, and a manufacturing method thereof may include a lower electrode, a variable fluid, and an upper electrode. A polymer layer may be formed on the lower electrode, and a variable fluid receiving portion is patterned on the polymer layer. A variable stiffness layer is formed by putting a variable fluid in the variable fluid receiving portion. The upper electrode is formed on the variable fluid layer.

An electronic device includes a first main body part at least one second main body part connected to the first main body part so as to be rotatable, or such that the first and second main body parts pivot relative to each other, and a connecting part that connects the second main body part to the first main body part or another second main body part adjacent thereto, wherein the connecting part includes a connecting member that rotatably connects the first and at least one second main body parts, a flexible printed circuit board (FPCB) that is surrounded by the connecting member and electrically connects at least one second main body part to the first main body part and a reinforcing member that is interposed between the connecting member and the FPCB and at least partially overlaps the FPCB.

A sensor unit for vehicles for detecting at least the moisture and/or the temperature on the inside of a vehicle window by a sensor is disclosed. The sensor unit is mounted adjacent to the inside of the vehicle window, the sensor unit comprises a housing within which it is partially enclosed, the housing has at least one opening in the direction of the vehicle window through which the sensor unit is pressed against the vehicle window. The sensor unit has a printed circuit board (PCB) that is pressed against the inside of the vehicle window when the sensor unit is in the mounted state, and is arranged between the sensor and the vehicle window. The PCB is a rigid-flexible PCB comprising a bend at least in a partial region, the bend of the rigid-flexible PCB being set up in such a way as to generate an elastic restoring force, which presses the rigid-flexible PCB against the vehicle window. The rigid-flexible PCB has at least one recess for receiving a fixing means and these together are designed to hold the rigid-flexible PCB in a specific shape.

A wiring board includes a substrate, wiring, and a reinforcing part. The substrate is stretchable, and includes a first surface and a second surface located opposite to the first surface. The wiring is located at the first surface side of the substrate. The reinforcing part overlaps the wiring when viewed in a direction normal to the first surface of the substrate. The substrate has a control region and a non-control region. The control region overlaps the reinforcing part. The non-control region does not overlap the reinforcing part. The non-control region is positioned to sandwich the control region in a direction orthogonal to the direction in which the wiring extends.

Some forms relate to a stretchable computing device that includes a stretchable body; a first electronic component embedded within the stretchable body; a second electronic component embedded within the stretchable body; and wherein the first electronic component and the second electronic component are connected by stretchable electrical connectors that include vias. The stretchable electrical connectors are non-planar and/or may have a partial zig-zag shape and/or a partial coil shape. In some forms, the stretchable computing device further includes a textile attached to the stretchable body.

The developed construction of the flexible circuit board is distinguished by the presence of compensating folds with a simple topology, which allow the circuit board to be installed in a flexible-hard body in such a way that the integrity of the circuit board is maintained when bending and rolling up, and the lifespan of the device during rolling/unrolling reaches 100,000 cycles and more.

A process carrying out non-planar three-dimensional forming of at least one segment of a flexible printed circuit board including an electrically insulating polymer film, and, on at least one side of the polymer film, a metallization then carrying out electrodeposition in which a conductive layer is deposited on at least the metallization of at least the formed segment.

Some forms relate to a stretchable computing device that includes a stretchable body; a first electronic component embedded within the stretchable body; a second electronic component embedded within the stretchable body; and wherein the first electronic component and the second electronic component are connected by stretchable electrical connectors that include vias. The stretchable electrical connectors are non-planar and/or may have a partial zig-zag shape and/or a partial coil shape. In some forms, the stretchable computing device further includes a textile attached to the stretchable body.

An integrated circuit that includes a substrate having a shape memory material (SMM), the SMM is in a first deformed state and has a first crystallography structure and a first configuration, the SMM is able to be deformed from a first configuration to a second configuration, the SMM changes to a second crystallography structure and deforms back to the first configuration upon receiving energy, the SMM returns to the first crystallography structure upon receiving a different amount of energy; and an electronic component attached to substrate. In other forms, the SMM is in a first deformed state and has a first polymeric conformation and a first configuration, the SMM changes from a first polymeric conformation to a second polymeric conformation and be deformed from a first configuration to a second configuration, the SMM changes returns to the first polymeric conformation and deforms back to the first configuration upon receiving energy.

Some forms relate to a stretchable computing device that includes a stretchable body; a first electronic component embedded within the stretchable body; a second electronic component embedded within the stretchable body; and wherein the first electronic component and the second electronic component are connected by stretchable electrical connectors that include vias. The stretchable electrical connectors are non-planar and/or may have a partial zig-zag shape and/or a partial coil shape. In some forms, the stretchable computing device further includes a textile attached to the stretchable body.