A flexible printed circuit board (FPCB) is disclosed. The FPCB can be employed to connect an interface card having connectors with a two-stage configuration to a connection destination of a portable information equipment. The FPCB includes a bend line located between an upper-stage terminal group and a lower-stage terminal group. The FPCB can be bent along the bend line to allow the upper-stage terminal group and the lower-stage terminal group to be mutually superimposed over each other. In addition, the upper-stage terminal group of the FPCB is connected to the upper-stage-side connector terminal group of the interface card, and the lower-stage terminal group of the FPCB is connected to the lower-stage-side connector terminal group of the interface card.

In printed wiring that is formed, on a surface of a base member. by a film of cured electrically conductive ink and that includes: a wavy line; a first wiring element located at one side of both sides sandwiching the wavy line in a width direction; and a second wiring element located at the other side of the both sides and adjacently to the wavy line; a surplus wavy line is provided which is another wavy line, which extends along the wavy line adjacently to the wavy line between the wavy line and the first wiring element, and which is connected to the wavy line to have the same potential.

Apparatus and methods employing twisted differential compensation for routing high-speed signals near power delivery inductors. Traces used for a high-speed differential signal including a P trace and an N trace are routed through one or more layers in a multi-layer printed circuit board (PCB) substrate and employ a twisted portion proximate to the centerline of an inductor under which portions of the P and N traces are swapped horizontally in a layer parallel to the top plane and/or are swapped vertically by swapping layers. The signal paths are routed such that a level of noise inductively coupled into the P trace and the N trace from the inductor is approximately equally. Stripline structures may be used for signals that are routed under an inductor, while stripline and microstrip structures may be used for signals routed adjacent to an inductor.

A display device includes: a display panel; an input sensor disposed on the display panel; a flexible circuit board connected to the display panel and the input sensor; a first differential signal line and a second differential signal line, which are disposed on the flexible circuit board and connected to the display panel; and a transmission line and a receiving line, which are disposed on the flexible circuit board and connected to the input sensor. In a plan view, the receiving line is disposed between the first differential signal line and the second differential signal line.

A touch sensor and an electronic device are provided, and the touch sensor includes a film substrate and a plurality of touch electrode regions on the film substrate. The plurality of touch electrode regions are spaced apart from each other by at least one gap region, and the touch sensor is bendable along the gap region. The touch sensor is bendable and is not easily damaged, which helps to achieve foldable touch control.

A display device includes a display panel, and an electrostatic capacitive type touch panel which is formed in an overlapping manner with the display panel. A plurality of X electrodes and a plurality of Y electrodes intersecting with the X electrodes. A first signal line supplies signals to the X electrodes, a second signal line supplies signals to the Y electrodes, and the first signal line and the second signal line are formed on a flexible printed circuit board. A dummy electrode is formed adjacent to an electrode portion of each X electrode and electrode portion of each Y electrode, the dummy electrode does not overlap the X electrode and the Y electrode, and the dummy electrode does not electrically connect with the first and second signal lines.

The present invention is directed to flexible conductive articles (600) that include a printed circuit (650) and a stretchable or non-stretchable substrate (610). In some embodiments, the substrate has a printed circuit on both sides. The printed circuit contains N therein a porous synthetic polymer membrane (660) and an electrically conductive trace (670) as well as a non-conducive region (640). The electrically conductive trace is imbibed or otherwise incorporated into the porous synthetic polymer membrane. In some embodiments, the synthetic polymer membrane is microporous. The printed circuit may be discontinuously bonded to the stretchable or non-stretchable substrate by adhesive dots (620). The printed circuits may be integrated into garments, such as smart apparel or other wearable technology.

A conductive signal transmission structure for an electronic device (e.g., a printed circuit board of an electronic device) includes a copper material and a graphene layer disposed within the copper material at a depth below a surface of the structure. The depth of the graphene layer is further within a skin depth region of the structure when a transmission signal is applied to the structure that is in the GHz frequency range.

A display device includes: a display panel; an input sensor disposed on the display panel; a flexible circuit board connected to the display panel and the input sensor; a first differential signal line and a second differential signal line, which are disposed on the flexible circuit board and connected to the display panel; and a transmission line and a receiving line, which are disposed on the flexible circuit board and connected to the input sensor. In a plan view, the receiving line is disposed between the first differential signal line and the second differential signal line.

A wiring substrate includes an insulating base that has a plate surface; a first circuit that is provided on the plate surface; a first terminal that is provided on the plate surface, and to which a mounting member is attached; a second terminal that is provided on the plate surface; a first wiring that connects the first circuit and the first terminal to each other; and a second wiring that connects the first terminal and the second terminal to each other, is electrically connected to the first wiring in the first terminal, and has a parallel section in which the second wiring is disposed close to and parallel to the first wiring without being electrically connected to the first wiring outside the first terminal.