Abstract:
PROBLEM TO BE SOLVED: To provide a substrate for mounting a semiconductor element, in which fine-pitch wiring layers are formed to mount the semiconductor element and the reliability is not degraded by heat from the semiconductor element. SOLUTION: In a semiconductor element mounting substrate 10, a low-thermal expansion substrate 50 is sandwiched between an interlayer resin layer 14U on the top surface and an interlayer resin layer 14D on the underside, and a conductor circuit 26 of an organic substrate 30 and a first conductor circuit 80 of the low-thermal expansion substrate 50 are connected via a via conductor 22 formed on the interlayer resin layer 14U. Thus the low-thermal expansion substrate 50 for mounting a semiconductor element 90 is connected to the organic substrate 30 that is connected to an external substrate, without arranging the organic substrate and the resin layers on the back side of the low-thermal expansion substrate 50 that is considerably affected by the thermal history of the semiconductor element 90. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a connection structure of an electrical circuit capable of restraining degradation of capacitance between terminals. SOLUTION: The connection structure of an electrical circuit includes a conductor part 25 conducting with an electrical circuit of a first flat-type circuit base material 7, a dielectric part 4 fitted on the conductor part 25, and a facing part 35 fitted on a side of a second flat-type circuit base material 8. The dielectric part 4 faces to the facing part 35, and a liquid dielectric material is interposed between the dielectric part 4 and the facing part 35. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic component which has improved adhesion with substrates and also enhanced strength and reliability when buried between two resin substrates, and to provide an electronic component module. SOLUTION: In a dielectric element 1a, a side face 2E is roughened so that the surface roughness Ra is 15 nm or greater. By this means, the area of contact between a glass epoxy resin substrate 10 and insulating material 30 is increased, adhesion with resin substrates is improved, and strength and reliability can be enhanced when buried between two resin substrates. In the dielectric element 1a, the surface roughness Ra of the side face 2E is 5,000 nm or less, so that when burying the dielectric elements 1a and 1b between the glass epoxy resin substrate 10 and insulating material 30, the occurrence of air bubbles between surfaces of the dielectric elements 1a and 1b and the resin can be prevented. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To form a simple packaging structure which can connect an electronic component under a low pressure force and can ensure a high connection reliability, and to provide an electronic component packaging body. SOLUTION: In the packaging structure, an electrode terminal 1a of a semiconductor element 1 having a multilayer wiring layer 1b composed of a micro wiring layer and a brittle insulating film of a low dielectric constant is connected to an electrode terminal 6a (here, a projecting electrode 5 formed thereon) of a circuit board 6 through a conductive bonding agent 2, to charge a sealing resin 4 between the semiconductor element 1 and the circuit board 6. A stress relaxation layer 3 is formed surrounding a connection part by the conductive bonding agent 2. COPYRIGHT: (C)2010,JPO&INPIT