Abstract:
An adhesive for bonding and securing a semiconductor chip to a circuit board and electrically connecting the electrodes of the two, and containing an adhesive resin composition and an inorganic filler being contained in an amount of 10 to 200 parts by weight of 100 parts by weight of the adhesive resin composition.
Abstract:
The invention relates to the manufacturing of a multilayer structure and especially it relates to the manufacturing of a three-dimensional structure and its use as an electronics assembly substrate and as a winding for transformers and inductors. When a multilayer structure is manufactured by folding a conductor-insulator-conductor laminate, where the conductor layers to be separated from each other follow each other on opposite sides of the conductor-insulator-conductor laminate in the sections following each other and where the insulator has been removed from the places where the conductor layers are to be connected together after folding, it is possible to manufacture a wide range of three-dimensional multilayer structures where the volume occupied by the windings over the total volume can be maximized. Alternatively, by using the method it is also possible to manufacture a multilayer structure where components have been buried inside. The method makes it also possible to make connections between layers in a flexible manner. Among other issues, the method can be easily automated for mass-production.
Abstract:
A multi-layer circuit board including top (40), middle (24), and bottom (18) dielectric layers, a conductive pattern (44) disposed on the top surface (42) and a ground layer (46) disposed on the bottom surface of the top dielectric layer (40), a conductive pattern (28) disposed on the bottom surface (22) of the middle dielectric layer (24), and a ground layer (30) disposed on the bottom surface (16) of the bottom dielectric layer (18).
Abstract:
The present invention discloses a multi-layer circuit board assembly having a first circuit portion having a top surface and a bottom surface a first pre-circuit assembly which is attached to the top surface of the first circuit portion and which includes a top conductive layer. A second pre-circuit assembly is attached to the bottom surface of the first circuit portion and includes a bottom conductive layer. An aperture is formed through the first circuit portion, the first pre-circuit assembly and the second pre-circuit assembly. A plurality of tab portions are integrally formed from the top conductive layer, which extend through the aperture and which are coupled to the bottom conductive layer.
Abstract:
An adhesive for bonding and securing a semiconductor chip to a circuit board and electrically connecting the electrodes of the two, and containing an adhesive resin composition and an inorganic filler being contained in an amount of 10 to 200 parts by weight of 100 parts by weight of the adhesive resin composition.
Abstract:
Substrate 10 has bumps 28, 30, 32, 34 and a substrate 20 has openings 36, 38, 40, 42 at positions in which bumps 28, 30, 32, 34 confront respectively. The substrates 10 and 22 are put together by fusing a sealing wall 26 formed on the substrate 22, to hermetically seal an electronic device lying on the substrate 10 therein. Gas that may be generated upon fusing of the sealing wall 26 can be effectively removed through the openings 36, 38, 40, 42 in the substrate 22.
Abstract:
A semiconductor device including a semiconductor chip (10) which has an electrode and also has an active surface covered with an insulating layer (100). A rewiring circuit (120) is formed on the insulating layer (100) and is electrically connected to the electrode. An inner bump (140) is formed on a conductive pad (122) which is a part of the rewiring circuit (120). An insulating film (160) is attached to the rewiring circuit (120) and a surface of the insulating layer (100) at a peripheral portion of the rewiring circuit (120). The insulating film (160) has a through hole (180) into which the inner bump (140) is inserted. An outer bump (200) is superimposed on the inner bump (140) in the through hole (180) so as to project outwards away from the semiconductor chip (10).
Abstract:
The invention relates to a printed circuit board (1) with a sheet-like board substrate (2) and with at least one electronic component (3), wherein it is provided that the component (3) is arranged within the board substrate (2). The invention also relates to a corresponding method for producing the printed circuit board.