Abstract:
The invention relates to a method for removing a part of a substantially planar material layer (2) which is connected to at least one further, substantially planar material layer (9) in a connecting step. According to the invention, a zone where the material layers (2, 9) are not directly interconnected is provided in the zone where the part (11) is later on removed, said first zone being provided by applying a material (8) that prevents the material layers to be interconnected from sticking to each other. The invention also relates to a multilayer structure and to the use of the method and to a multilayer structure especially for producing a multilayer printed circuit board.
Abstract:
A wiring board including a main substrate having a base material and a conductive pattern formed on the base material, and a flex-rigid printed wiring board provided to the main substrate and having a rigid substrate and a flexible substrate connected to each other. The flex-rigid printed wiring board has a conductive pattern formed on the rigid substrate and/or the flexible substrate. The conductive pattern of the main substrate is electrically connected to the conductive pattern of the flex-rigid printed wiring board.
Abstract:
A flat light source apparatus has a light source board which comprises unit boards, each unit board having a printed circuit board and a light source formed on the printed circuit board, wherein the unit boards are arranged adjacent to each other at least in one direction, and any pair of the unit boards adjacent to each other is integrated by a connecting portion provided therebetween. The apparatus also has a main wire which extends along a plane of the light source board, wherein the main wire extends between adjacent unit boards via the connecting portion such that all of the unit boards are electrically connected to each other by the main wire. The apparatus further has a branch wire for supplying electric power to the light source, the branch wire being provided in each unit board and branching from the main wire in each unit board.
Abstract:
A circuit board having a removing area is provided. The circuit board includes a first dielectric layer, a first laser resistant structure disposed on the first dielectric layer and located at the periphery of the removing area, a second dielectric layer disposed on the first dielectric layer, a circuit layer disposed on the second dielectric layer, a second laser resistant structure disposed on the second dielectric layer and located at the periphery of the removing area, and a third dielectric layer disposed on the second dielectric layer. The second laser resistant structure is insulated from the circuit layer. There is a gap between the second laser resistant structure and the circuit layer, and the vertical projection of the gap on a first surface overlaps the first laser resistant structure. The third dielectric layer exposes the portion of the circuit layer within the removing area.
Abstract:
A flexible wiring board includes a first flexible base material with a conductor pattern formed thereon, a second flexible base material disposed adjacent to the first flexible base material and an insulating layer covering the first flexible base material and the second flexible base material. The insulating layer exposes at least one portion of the first flexible base material. A conductor pattern is formed on the insulating layer, and a plating layer is provided connecting the conductor pattern of the first flexible base material and the conductor pattern on the insulating layer.
Abstract:
A flex-rigid wiring board including an insulative substrate having a wiring layer which is formed on the insulative substrate and includes a conductor, a flexible wiring board positioned beside the insulative substrate and having a wiring layer, the wiring layer of the flexible wiring board including a conductor and being contained inside the flexible wiring board, and a first insulation layer positioned on the insulative substrate and the flexible wiring board such that a portion of the flexible wiring board is left exposed from the first insulation layer. The first insulation layer has a wiring layer which is formed on the first insulation layer and includes a conductor. The wiring layer of the first insulation layer has a thickness which is formed thicker than a thickness of the wiring layer of the flexible wiring board and a thickness of the wiring layer of the insulative substrate.
Abstract:
A method for manufacturing a rigid-flexible printed circuit board includes certain steps. A flexible substrate including an exposed portion and an attaching portion is provided. An adhesive sheet defining an opening, and a rigid copper clad laminate are provided. The rigid copper clad laminate includes an insulating layer and a copper layer. A blind first slit is defined in the insulating layer. The flexible substrate, the adhesive sheet and the copper clad laminate are laminated. An outer circuit is formed in the copper layer. A second slit is defined in the copper clad laminate, and the second slit is in communication with the first slit. A portion of the copper clad laminate is removed to expose the flexible portion of the flexible substrate.
Abstract:
The invention is directed to a method of bonding a hermetically sealed electronics package to an electrode or a flexible circuit and the resulting electronics package that is suitable for implantation in living tissue, such as for a retinal or cortical electrode array to enable restoration of sight to certain non-sighted individuals. The hermetically sealed electronics package is directly bonded to the flex circuit or electrode by electroplating a biocompatible material, such as platinum or gold, effectively forming a plated rivet-shaped connection, which bonds the flex circuit to the electronics package. The resulting electronic device is biocompatible and is suitable for long-term implantation in living tissue.
Abstract:
A method for manufacturing a flex-rigid wiring board, including preparing a flexible wiring board having a flexible base material and having a conductive layer over the flexible base material, making a cut in the flexible wiring board to form a cut portion, and folding at least one portion of the flexible wiring board using the cut portion to form one or more folding portions such that the flexible wiring board is extended in length, and connecting the flexible wiring board to a rigid wiring board including a rigid base material and having a conductive layer over the rigid base material.
Abstract:
The invention is directed to a method of bonding a hermetically sealed electronics package to an electrode or a flexible circuit and the resulting electronics package that is suitable for implantation in living tissue, for a retinal or cortical electrode array to enable restoration of sight to certain non-sighted individuals. The hermetically sealed electronics package is directly bonded to the flex circuit or electrode by electroplating a biocompatible material, such as platinum or gold, effectively forming a plated rivet-shaped connection, which bonds the flex circuit to the electronics package. The resulting electronic device is biocompatible and is suitable for long-term implantation in living tissue.