Printed-circuit substrate and its connecting method
First Claim
1. A connecting method for a printed-circuit substrate, wherein the printed-circuit substrate includes film-shaped first and second support bases having an electrical insulating property and elasticity;
- a resin mold section for securely fixing an integrated circuit supported on the first support base; and
a plurality of foil-shaped electric conductors that are connected to the integrated circuit and installed on the first and the second support bases such that the first and the second support bases are connected to each other by the foil-shaped electric conductors, comprising the step of;
soldering the foil-shaped electric conductors by applying heat and pressure to the second support base.
1 Assignment
0 Petitions
Accused Products
Abstract
A printed-circuit substrate is provided with: a film-shaped support base having an electrical insulating property and elasticity, which includes a resin mold section for supporting an IC; a plurality of foil-shaped electrodes which are connected to the IC and supported by the support base in such a manner as to extend toward the periphery of the support base; and an exposed portion which is provided by removing the support base in the direction orthogonal to the foil-shaped electrodes over an entire area of the support base between the IC chip and the periphery thereof so as to expose one portion of each foil-shaped electrode. In the case of connecting the foil-shaped electrodes to electrodes of a printed-circuit substrate by means of soldering, the tips of the foil-shaped electrodes are soldered to the respective electrodes by applying heat and pressure to a part of the support base located on the tip-side of the exposed portions of the foil-shaped electrodes. This arrangement makes it possible to improve the pliability of the exposed portion; therefore, even if the support base is miniaturized to have a thin width by shortening the exposed portion, the reliability of the connecting structure is improved between the tips of the foil-shaped electrodes and the electrodes.
31 Citations
9 Claims
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1. A connecting method for a printed-circuit substrate, wherein the printed-circuit substrate includes film-shaped first and second support bases having an electrical insulating property and elasticity;
- a resin mold section for securely fixing an integrated circuit supported on the first support base; and
a plurality of foil-shaped electric conductors that are connected to the integrated circuit and installed on the first and the second support bases such that the first and the second support bases are connected to each other by the foil-shaped electric conductors, comprising the step of;soldering the foil-shaped electric conductors by applying heat and pressure to the second support base. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- a resin mold section for securely fixing an integrated circuit supported on the first support base; and
Specification