Flexible devices including conductive traces with enhanced stretchability, and methods of making and using the same are provided. The circuit die is disposed on a flexible substrate. Electrically conductive traces are formed in channels on the flexible substrate to electrically contact with contact pads of the circuit die. A first polymer liquid flows in the channels to cover a free surface of the traces. The circuit die can also be surrounded by a curing product of a second polymer liquid.

A separable and reconnectable connector for semiconductor devices is provided that is scalable for devices having very small contact pitch. Connectors of the present disclosure include signal pins shielded by pins electrically-coupled to ground. One or more signal pins in a contact array are electrically-shielded by at least one ground pin coupled to a ground plane. Embodiments thereby provide signal pins, either single-ended or a differential pair, usable to transmit signals with reduced noise or cross-talk and thus improved signal integrity. Embodiments further provide inner ground planes coupled to connector ground pins to shield pairs of differential signal pins without increasing the size of the connector. Inner grounding layers can be formed within isolation substrates incorporated into connector embodiments between adjacent pairs of signal pins. These buried ground layers provide additional crosstalk isolation in close proximity to signal pins, resulting in improved signal integrity in a significantly reduced space.

A circuit arrangement (1), in particular for an electrically driven motor vehicle, has at least one bus bar (5) which is connected electrically to a supplier (2) and which is connected to a first consumer (3) at a first transfer point (6) and to a second consumer (4) at a second transfer point (7). Both the first and the second transfer point (6, 7) are formed as flexible contact points.

An electrical apparatus includes first and second welded members that are welded together. The first welded member has a first metal part and a first resin part covering part of the first metal part. The second welded member has a second metal part and a second resin part covering part of the second metal part. The first metal part has a first standing terminal portion exposed from the first resin part and standing in a standing direction. The second metal part has a second standing terminal portion exposed from the second resin part and standing in the standing direction. The first and second standing terminal portions are welded to each other so that a weld is formed therebetween. The first and second resin parts partially overlap each other in the standing direction. The weld is within a projection region of the first and second resin parts in the standing direction.

A system for wirelessly obtaining physiological data from a subject includes a sensor patch and a separate electronics package. The sensor patch is disposed on and adheres to the subject, and includes a first part of a releasable electrical connector. An electronics package includes a second part of the first releasable electrical connector, which is used to physically and electrically connect the electronics package to the sensor patch. The electronics package includes a flexible substrate, with shells set on this substrate. The shells enclose the electronics. The shells are connected by a flexible circuit board. Analog front end circuitry is placed in one shell, while the wireless transceiver is placed in the other shell.

A separable and reconnectable connector for semiconductor devices is provided that is scalable for devices having very small contact pitch. Connectors of the present disclosure include signal pins shielded by pins electrically-coupled to ground. One or more signal pins in a contact array are electrically-shielded by at least one ground pin coupled to a ground plane. Embodiments thereby provide signal pins, either single-ended or a differential pair, usable to transmit signals with reduced noise or cross-talk and thus improved signal integrity. Embodiments further provide inner ground planes coupled to connector ground pins to shield pairs of differential signal pins without increasing the size of the connector. Inner grounding layers can be formed within isolation substrates incorporated into connector embodiments between adjacent pairs of signal pins. These buried ground layers provide additional crosstalk isolation in close proximity to signal pins, resulting in improved signal integrity in a significantly reduced space.

A plug connector provides an electrical connection to a conductor track connection of a printed circuit board. The plug connector has a first printed circuit board with a conductor track connection and a plugging region for plugging the printed circuit board into the plug connector. The plugging region extends parallel to the first printed circuit board. A contact element and/or a spring element is provided in the plug connector. The plugging region and the contact element and/or the spring element are arranged in such a way that, in a plugged state of the plug connector, the printed circuit board which is plugged into the plugging region is arranged parallel to the printed circuit board and the conductor track connection is arranged opposite the conductor track connection. An electrical connection of the conductor track connection to the conductor track connection is provided by the contact element and/or the spring element.

An LED assembly includes an omnidirectional light field. The LED assembly has a transparent substrate with first and second surfaces facing to opposite orientations respectively. LED chips are mounted on the first surface and are electrically interconnected by a circuit. A transparent capsule with a phosphor dispersed therein is formed on the first surface and substantially encloses the circuit and the LED chips. First and second electrode plates are formed on the first or second surface, and electrically connected to the LED chips.

An electronic device includes a solar cell, a wiring board, a connector, a first circuit, a second circuit and a fixing member. The wiring board includes a feeder wiring connected to the solar cell. The connector is continuous with the wiring board and includes a feeder electrode electrically connected to the feeder wiring. The first circuit includes a first electrode and a first wiring continuous with the first electrode. The second circuit includes a second electrode and a second wiring continuous with the second electrode. The fixing member fixes the feeder electrode, the first electrode and the second electrode in a state in which the electrodes are superposed on top of one another, to electrically connect each one of the electrodes to another one or more of the electrodes.

Disclosed are compositions, devices, systems and fabrication methods for stretchable composite materials and stretchable electronics devices. In some aspects, an elastic composite material for a stretchable electronics device includes a first material having a particular electrical, mechanical or optical property; and a multi-block copolymer configured to form a hyperelastic binder that creates contact between the first material and the multi-block copolymer, in which the elastic composite material is structured to stretch at least 500% in at least one direction of the material and to exhibit the particular electrical, mechanical or optical property imparted from the first material. In some aspects, the stretchable electronics device includes a stretchable battery, biofuel cell, sensor, supercapacitor or other device able to be mounted to skin, clothing or other surface of a user or object.