Abstract:
A semiconductor chip is provided that is highly packageable and particularly well suited for mounting on a circuit board having a curved surface. The semiconductor chip comprises a warpage control film that controls the warpage of a substrate.
Abstract:
A circuit board includes an electrically conductive sheet having an insulative coating surrounding the conductive sheet, with a surface of the insulative coating around an edge of the conductive sheet having an arcuate or rounded shape. At least one electrical conductor is conformally deposited on at least the rounded insulative coating around the edge of the conductive sheet and defined via photolithographic and metallization techniques. Each electrical conductor on the insulative coating thereon around the edge of the conductive sheet conforms to the arcuate or rounded shape of the insulative coating and, therefore, has an arcuate or rounded shape.
Abstract:
Methods and apparatus to couple a device, such as, for example, a surface mount device, with a substrate, such as, for example, a printed circuit, are disclosed. An apparatus, according to one aspect, may include a substrate, a plurality of terminals coupled with the substrate, a conductive bonding material coupled with the plurality of terminals, an electronic device coupled with the conductive bonding material, and a holder that is coupled with the substrate to hold the electronic device. A method, according to one aspect, may include coupling a holder with a substrate such that terminals of the substrate are included in an opening of the holder, mounting an electronic device over the terminals with a conductive bonding material disposed therebetween, heating the conductive bonding material to its melting point, and cooling the conductive bonding material.
Abstract:
In one embodiment, the present invention provides a process for manufacturing a multilayer flexible wiring board, which allows individual layers of wiring boards to be precisely positioned and to be readily stacked. A mask for exposure is prepared in which a plurality of pattern holes corresponding to individual layers of wiring boards of a multilayer flexible wiring board are arranged in the direction perpendicular to the transporting direction P of substrate. This mask for exposure is used to form a plurality of wiring patterns corresponding to individual layers of wiring boards of a multilayer flexible wiring board on the same sheet-like substrate.
Abstract:
Provided is a method of forming a circuit board including (a) providing a first conductive sheet; (b) selectively removing one or more portions of the first conductive sheet to form a first panel having a first circuit board that is coupled to a disposable part of the first panel by at least one tab that extends from an edge of the first circuit board to an edge of the disposable part of the first panel; (c) applying an insulating coating to the first circuit board so that at least each edge of the first circuit board is covered thereby; and (d) separating the first circuit board from the disposable part in a manner whereupon at least part of the tab remains attached to the first circuit board and includes an exposed edge of the conductive sheet of the first circuit board. Circuit boards formed by the method are also provided.
Abstract:
Provided is a method of forming a circuit board including (a) providing a first conductive sheet; (b) selectively removing one or more portions of the first conductive sheet to form a first panel having a first circuit board that is coupled to a disposable part of the first panel by at least one tab that extends from an edge of the first circuit board to an edge of the disposable part of the first panel; (c) applying an insulating coating to the first circuit board so that at least each edge of the first circuit board is covered thereby; and (d) separating the first circuit board from the disposable part in a manner whereupon at least part of the tab remains attached to the first circuit board and includes an exposed edge of the conductive sheet of the first circuit board. Circuit boards formed by the method are also provided.
Abstract:
The present invention provides a glass fiber product having particles adhered to at least one fiber of the product, where the size and amount of particles is effective to reduce the tackiness of the glass fiber product and optionally effective to reduce interfilament bonding, and composition, and method for forming the same.
Abstract:
Process for producing a flexible wiring board by etching a metal foil halfway to form a thick film part and a thin film part, etching the thin film part in order to form a first wiring film having the thick film part and a second wiring film having the thin film part with the first wiring film having a larger thickness than the second wiring film. The sectional area and electrical resistance of the first wiring film can be enlarged, even in cases where the first wiring film and the second wiring film have almost the same width, because of the larger film thickness of the first wiring film.
Abstract:
A method for processing substrates, in which a photoresist layer is applied and structured on their surface. By blasting the substrate with particles, recesses are put into the surface of the substrate in those areas not covered by photoresist.
Abstract:
At least partially clad laminates comprising: (a) a cladding material; (b) a matrix material; and (c) at least one non-degreased fabric comprising at least one strand comprising a plurality of fibers, wherein at least a portion of the at least one non-degreased fabric comprises a coating which is compatible with the matrix material, and wherein at least a portion of the at least partially clad laminate has a roughness factor less than 8 microns using a one ounce clad, measured in either the warp direction or the fill direction of the at least one non-degreased. Electronic supports and electronic circuit boards comprising at least one at least partially clad laminate.