Method for forming a bump, semiconductor device and method of fabricating same, semiconductor chip, circuit board, and electronic instrument
First Claim
Patent Images
1. A semiconductor device comprising:
- a semiconductor chip;
a plurality of pads formed on the semiconductor chip; and
a plurality of metal layers and a plurality of leads;
wherein the plurality of metal layers and the plurality of leads are bonded through a soldering or brazing material, each of the metal layers are formed on each of the plurality of pads of the semiconductor chip, and each of the metal layers have a shape in which is formed a region for receiving the soldering or brazing material; and
the soldering or brazing material, when melted, is allowed to flow into a region of each of the metal layers for receiving the soldering or brazing material so as not to spread onto an adjacent pad of the plurality of pads.
1 Assignment
0 Petitions
Accused Products
Abstract
A method for forming a bump includes the steps of forming a resist layer so that a through-hole formed therein is located on a pad; and forming a metal layer to be electrically connected to the pad conforming to the shape of the through-hole. The metal layer is formed so as to have a shape in which is formed a region for receiving a soldering or brazing material.
15 Citations
11 Claims
-
1. A semiconductor device comprising:
-
a semiconductor chip;
a plurality of pads formed on the semiconductor chip; and
a plurality of metal layers and a plurality of leads;
wherein the plurality of metal layers and the plurality of leads are bonded through a soldering or brazing material, each of the metal layers are formed on each of the plurality of pads of the semiconductor chip, and each of the metal layers have a shape in which is formed a region for receiving the soldering or brazing material; and
the soldering or brazing material, when melted, is allowed to flow into a region of each of the metal layers for receiving the soldering or brazing material so as not to spread onto an adjacent pad of the plurality of pads.
-
-
2. A semiconductor chip comprising:
-
a plurality of pads; and
a metal layer disposed on each of the pads which is formed to have a shape in which is formed a region for receiving a soldering or brazing material. - View Dependent Claims (3, 4, 5)
-
-
6. A semiconductor device comprising:
-
a semiconductor chip having a plurality of pads;
a metal layer disposed on each of the pads, the metal layer formed to have a shape in which is formed a region for receiving a soldering or brazing material; and
a plurality of leads;
wherein the metal layer is bonded to one of the leads through the soldering or brazing material, and part of the soldering or brazing material is put in the region for receiving the soldering or brazing material. - View Dependent Claims (7, 8, 9, 10, 11)
-
Specification