Abstract:
An electromagnetic bandgap structure including: at least three conductive plates; a first stitching via, configured to electrically connect any one of the conductive plates to another conductive plate; and a second stitching via, configured to electrically connect the one conductive plate to yet another conductive plate, wherein the first stitching via electrically connects the one conductive plate to another conductive plate by allowing a part of the first stitching via to be connected through a planar surface above or below the one conductive plate, and the second stitching via electrically connects the one conductive plate to yet another conductive plate by allowing a part of the second stitching via to be connected through a planar surface that is different from the planar surface through which the part of the first stitching via is connected, the two planar surfaces being placed in a same direction based on the conductive plates.
Abstract:
A ridge structural part made of laminated composite material incorporates electrically conducting cables, the structural part includes at least two structural layers including fibers held in place by a thermosetting or thermoplastic matrix, at least one conducting network layer located between two of the at least two structural layer, the at least one conducting network layer including a network of electrically conducting cables, said electrically conducting cables being arranged throughout said structural part in a substantially regular manner and being electrically insulated from said two structural layers by a dielectric material. The structural part also includes electrical connections, to which electrically conducting cables of the at least one network layer are electrically connected so as to form an electrical network by assembling several structural parts.
Abstract:
A COF includes, in at least one embodiment, a heat dissipating material on a back surface of an insulating film. The heat dissipating material has a slit for reducing a degree of thermal expansion. Thus, at least one embodiment of the invention provides the COF in which deformation and disconnection of wiring are prevented.
Abstract:
A multi-layered ceramic package comprises: a signal layer with identified chip/device area(s) that require a supply of power; and a voltage power (Vdd) layer and a ground (Gnd) layer disposed on opposite sides directly above or below and adjacent to the signal layer and providing a first reference mesh plane and a second reference mesh plane configured utilizing a hybrid mesh scheme. The hybrid mesh scheme comprises: a full dense mesh in a first area directly above or below the identified chip/device area(s); a half dense mesh in a second area that is above or below the edge(s) of the chip/device area; and a wider mesh pitch in all other areas The Vdd traces are aligned to run parallel and adjacent to signal lines in those other areas. Wider traces are provided within the mesh areas that run parallel and adjacent to signal lines.
Abstract:
There is provided a printed wiring board, including: plural first conductive patterns arranged adjacently in a first direction and separated by first gaps; plural conductive pattern rows comprising the plural first conductive patterns, adjacent conductive pattern rows being offset from each other in the first direction by a second gap; a conductive pattern group comprising the plural conductive pattern rows arranged adjacently in a second direction that intersects the first direction and separated by third gaps; plural second conductive patterns that are smaller than the first conductive patterns and that connect, in the first direction, each of the plural first conductive patterns to first conductive patterns adjacent thereto in the first direction; and plural third conductive patterns that are smaller than the first conductive patterns, and that connect, in the second direction, each of the plural first conductive patterns to first conductive patterns adjacent thereto in the second direction.
Abstract:
An electronic product includes a case; a first board placed inside the case; and a second board having an Electromagnetic Band Gap (EBG) structure inserted therein. The second board is coupled to an inside of the case facing the first board so as to shield a noise radiated from the first board.
Abstract:
A multilayer flexible printed circuit board disclosed in the present application is a multilayer flexible printed circuit board in which a ground layer, an insulating layer and a signal wiring layer in which signal wiring is formed are laminated in sequence, with the multilayer flexible printed circuit board including a protruding portion protruding laterally, and a ground that is electrically connected to the ground layer being formed on at least one surface of the protruding portion, in order to have shielding properties that can cope with high speed signal transmission performed via the signal wiring layer.
Abstract:
A plurality of linear conductors arranged in parallel with each other are covered from the upper and lower sides thereof by first and second insulator layers. On the upper side of the first insulator layer, a first adjustment material layer is formed with forming a predetermined gap relative to an end of the flat cable. And, at this gap, a reinforcement plate is provided. A shield member is provided for covering the upper side of the reinforcement plate and a portion of the upper side of the first adjustment material layer. From the upper side of the shield member to the upper side of the first adjustment material layer, a first shield layer is provided in such a manner to expose the upper side of the portion of the shield member where the reinforcement plate is present. A second insulator layer is configured to expose the conductors at the end of the flat cable. The shield member includes an impedance adjusting arrangement.
Abstract:
There are provided a pattern exposure method, a conductive film producing method, and a conductive film, wherein a photosensitive material is subjected to a proximity exposure through a photomask disposed with a proximity gap of 70 to 200 μm, and thereby is exposed in the mask pattern periodically in the conveying direction to obtain a conductive film. The conductive film has a plurality of conductive portions of first and second conductive thin metal wires and a plurality of opening portions. A side of each thin metal wire has a protrusion extending toward the opening portion from a virtual line representing a designed width of the thin metal wire, and the protruding amount of the protrusion is 1/25 to ⅙ of the designed width.
Abstract:
The present invention relates to a method for burying a conductive mesh in a transparent electrode, and more particularly, to a method which prevents a conductive mesh from protruding from a transparent electrode by burying the conductive mesh in the transparent electrode.