Tape carrier, semiconductor apparatus, and semiconductor module apparatus
View Patent ↗A tape carrier of the present invention includes an insulating tape and a wiring pattern formed on the insulating tape. The wiring pattern includes a connecting section via which the wiring pattern is connected to a bump electrode. The connecting section is provided at a part of an overlap part of the wiring pattern, which overlap part overlaps a semiconductor device when the semiconductor device is mounted on the wiring pattern. The connecting section of the wiring pattern is smaller in wiring width than the remaining part of the overlap part, which remaining part is other than the connecting section.
1. A tape carrier for a semiconductor apparatus in which a semiconductor device is mounted on and bonded to a wiring pattern by use of a chip-on-film method, the tape carrier comprising:
an insulating tape, the wiring pattern being formed on the insulating tape, wherein
the wiring pattern includes a connecting section having a bump electrode on a surface thereof, the connection section being a part of an overlap part of the wiring pattern, which overlap part overlaps the semiconductor device when the semiconductor device is mounted on the wiring pattern, and
the connecting section of the wiring pattern being smaller in wiring width than a remaining part of the overlap part of the wiring pattern, which remaining part is other than the connecting section.
2. The tape carrier of claim 1 , wherein the wiring width of the connecting section of the wiring pattern satisfies formula (1) below
a< 2 c−b− 2| g| (1),
where a is the wiring width of the connecting section, b is a width of the bump electrode, c is a wiring pitch, and ±g is a bonding accuracy.
3. The tape carrier of claim 1 , wherein a length of the connecting section of the wiring pattern satisfies formula (2) below
e>f+ 2| g| (2),
where e is the length of the connecting section, f is a length of the bump electrode, and ±g is a bonding accuracy.
4. The tape carrier of claim 1 , wherein the wiring pattern includes a section on both sides of the connecting section of the wiring pattern, which section is greater in wiring width than the connecting section.
5. The tape carrier of claim 1 , wherein the width of the connecting section of the wiring pattern is smaller than or equal to a half of a width of the bump electrode.
6. The tape carrier of claim 1 , wherein:
the wiring width of the remaining part is greater than a half of a width of the bump electrode; and
the remaining part is not in contact with an adjacent wiring pattern.
7. A semiconductor apparatus comprising a tape carrier of claim 1 .
8. A semiconductor module apparatus comprising a semiconductor apparatus of claim 7 .
9. The tape carrier of claim 1 , wherein the connecting section is between the remaining part.