Abstract:
PROBLEM TO BE SOLVED: To enhance a shielding effect for an electromagnetic wave by making the shielding effect be obtained over a long period of time from a wafer stage to after completion and avoid an influence of the electromagnetic wave sufficiently, while avoiding an event that a connection electrode is connected to a shielding layer.SOLUTION: In a laminated semiconductor substrate, a plurality of semiconductor substrates are laminated. Each semiconductor substrate has a plurality of scribe-groove parts formed along scribe lines. Further, each semiconductor substrate has a semiconductor device formed therein and has a plurality of device regions insulated from each other. Further, an uppermost substrate and a lowermost substrate have an electromagnetic shielding layer formed by using a ferromagnetic body. The electromagnetic shielding layer is formed in a shielding region other than an extending zone. The extending zone is set in a part where a wiring electrode crosses in a peripheral edge part of the device region.
Abstract:
PROBLEM TO BE SOLVED: To provide means that enhances a shielding effect for an electromagnetic wave by making the shielding effect be obtained over a long period of time from a wafer stage to after completion and thereby that can avoid an influence of the electromagnetic wave sufficiently, while avoiding such an event that a connection electrode is electrically connected to a shielding layer.SOLUTION: In a laminated semiconductor substrate 100, a plurality of semiconductor substrates 1 are laminated. A plurality of scribe-groove parts 20 and 21 are formed on each of the semiconductor substrates. Each semiconductor substrate has a semiconductor device formed therein and has a plurality of device regions 10 insulated from each other. An uppermost substrate and a lowermost substrate have an electromagnetic shielding layer formed in regions other than the scribe-groove parts by using a ferromagnetic body. The laminated semiconductor substrate has a through hole which penetrates the plurality of semiconductor substrates laminated in a laminated direction formed in the scribe-groove part, and has a through electrode penetrating the through hole.
Abstract:
PROBLEM TO BE SOLVED: To provide a circuit board which places a control circuit close to an optical module and effectively cools the control circuit and the optical module.SOLUTION: A circuit board is placed in a housing of an electronic apparatus, and an optical module and a control circuit, which are connected with each other, are mounted on the circuit board. The circuit board includes a heat sink with a fan, which is mounted on the control circuit and blows the control circuit to cool the control circuit, and an outer air inlet tube provided on the circuit board and circulating outer air taken in from the exterior of the housing toward an inlet port of the heat sink with the fan. The optical module is placed in a predetermined position along the position where the outer air inlet tube is formed.
Abstract:
PROBLEM TO BE SOLVED: To mass-produce a layered chip package at low cost in a short time.SOLUTION: A layered chip package 1 includes a main body 2 and a plurality of through electrodes 21. The main body 2 includes a plurality of layer portions 10 stacked and a plurality of through holes that penetrate all the plurality of layer portions 10. The plurality of through electrodes 21 are provided in the plurality of through holes of the main body 2 and penetrate all the plurality of layer portions 10. Each of the plurality of layer portions 10 includes a semiconductor chip. At least one of the plurality of layer portions 10 includes a wiring 31 that electrically connects the semiconductor chip to the plurality of through electrodes 21. The wiring 31 includes a plurality of conductors 32 that make contact with a through electrode 21 that is exposed in wall faces of any one of the plurality of through holes and passes through the through hole.