Abstract:
A wiring board sheet which enables the miniaturization of a wiring board by mounting electric components (10) in an insulation layer (4) to increase the quantity of mounting electric components, has a high reliability, and undergoes a complicated manufacturing process, and a method for manufacturing the wiring board sheet. A multilayer board which is mannufactured from this wiring board sheet, eliminates a difference in thermal histories during molding in each layer, simplifies the manufacturing process, and realize miniaturization by the scale-down and high-density of a conductor circuit and an improvement in reliability, and a method for manufacturing the multilayer board.
Abstract:
A device having improved electrical connection includes a first substrate (11) including a first side and a second side; a functional element (12) on the first side of the first substrate; a pad (13) that is electrically connected to the functional element; and a through-hole interconnection (15) provided in a hole extending through the first substrate from the first side to the second side, the through-hole interconnection including a first conductive material (17) and being electrically connected to the pad, and a conductive region (18) that is provided along a portion of an inner surface of the hole, and is made of a second conductive material, different from the first conductive material.
Abstract:
There is provided a multilayer printed wiring board in which each of insulating layers is 100 µm or less in thickness. Each of a plurality of viaholes electrically connecting conductor circuits on the insulating layers to each other is formed tapered inwardly from the surface of the insulating layer and the viaholes are disposed opposite to each other to form a multistage stacked via. This structure enables controlling such external stress as drop shock generated when the board is dropped and preventing the insulating substrate from warping, which leads to preventing cracking and disconnection of conductor circuit and minimizes the decrease of reliability and resistance to drop shock of the board.
Abstract:
There is provided a multilayer printed wiring board in which each of insulating layers is 100 µm or less in thickness. Each of a plurality of viaholes electrically connecting conductor circuits on the insulating layers to each other is formed tapered inwardly from the surface of the insulating layer and the viaholes are disposed opposite to each other to form a multistage stacked via. This structure enables controlling such external stress as drop shock generated when the board is dropped and preventing the insulating substrate from warping, which leads to preventing cracking and disconnection of conductor circuit and minimizes the decrease of reliability and resistance to drop shock of the board.
Abstract:
Method for connecting at least one wire conductor (6) with at least one terminal device (22a, 22b) of a chip module (5) for producing a transponder device (1) comprising a coil device (2) and said chip module (5), wherein, in a first method step, the coil device (2) is disposed and fixed on a substrate (3),and, in a further method step, the wire conductor (6) of the coil device (2) is connected to the chip module (5), characterised in that , during the first method step, end portions (7a, 7b) of the wire conductor (6) are laid so as to extend across the accommodating window (4) in a spaced-apart relation in a central area (Z) of an accommodating window (4) for the chip module (5), the partial areas (8a, 8b) of the wire conductor (6) extending across the accommodating window (4) are displaced from said central area (Z) towards a corresponding edge (23a, 23b) of the accommodating window (4) by means of a positioning device (3) until at least a section of the partial area (8a, 8b) extends over the desired position of a terminal area (22a, 22b), the chip module (5) is subsequently inserted into the accommodating window (4) and the section is then connected in an electrically conductive manner with the terminal area (22a, 22b).
Abstract:
The invention relates to a method for producing an electrical connection between a rigid circuit board (1) and a metal contact partner (2), having the following steps: -preparing the rigid circuit board (1) comprising at least one copper layer (3) and at least one prepreg layer (5) - bringing the metal contact partner (2) and the circuit board (1) together, such that the metal contact partner (2) is brought into contact with a contact pad (7) on the copper layer (3) of the circuit board (1); - forming a recess in the circuit board (1) by removing the prepreg layer (5) in at least one partial region of the contact pad (7), and - irradiating with laser light (9), wherein a weld connection is formed between the contact partner (2) and the contact pad (7). The invention further relates to an arrangement of a rigid circuit board (1), a metal contact partner (2) and an electrical connection point, and a module comprising such an arrangement.
Abstract:
A flexible printed wiring board 1 includes a substrate 2, conductor wirings 3 and 4, a coverlay film 5, a jumper wiring 11, and through holes 9 and 10. The conductor wirings 3 and 4 are disposed on a first surface 2a of the substrate 2. The coverlay film 5 covers at least part of the conductor wirings 3 and 4. The jumper wiring 11 electrically connects the conductor wirings 3 and 4 to each other. The through holes 9 and 10 are formed in the substrate 2 and respectively open to the surfaces of the conductor wirings 3 and 4. The jumper wiring 11 is composed of a hardened material of a conductive paste and is formed so that a second surface 2b of the substrate 2 is continuous with respective surfaces 3a and 4a of the conductor wirings 3 and 4 to which the through holes 9 and 10 open.