JPS6322461B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a tape carrier used, for example, to supply drive signals to each electrode of a thermal head.

Generally, a tape carrier has an opening in the center into which an electronic component such as an IC chip is mounted, and a plurality of conductive paths electrically connected to the electronic component are formed on the surface.

By the way, since it is not possible to form the conductive lines so as to intersect with one another, conventionally, the cross conductive lines have been formed after forming through holes and lands.

However, when forming a cross-conducting line in this way, the size of the tape carrier becomes large because the through holes and lands are large, and the pattern on the back side of the tape carrier also increases.
Since there is a risk of the tape carrier being shot between the tape carrier and the wiring on the board on which it is mounted, the board must be coated with an insulating material.

The present invention has been made for the purpose of eliminating the above-mentioned drawbacks of the conventional tape carrier and providing a tape carrier capable of forming cross-conducting paths without providing through holes. a first tape having an opening, and a second tape adhered onto the first tape and having an opening extending around the opening of the first tape; A conductive path in which the inner lead faces and the outer lead faces on the outer periphery, and a terminal conductive path that includes only one of the outer lead and the inner lead and the other end ends as a terminal portion on the surface of the first tape, The surface of the second tape has a connecting conductor path that connects the terminal portions of each pair of terminal conductor paths on the first tape when the second tape is adhered to the surface of the first tape. This is what I did.

The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a developed view of FIG.
0, and a second tape 30 made of an insulating material adhered onto the first tape 10.

Among them, the first tape 10 has a rectangular shape, and in the center thereof, an electronic component (not shown) such as an IC chip is placed.
It has a rectangular opening 11 into which the holder is mounted.
Note that the tape 10 and the opening 11 may have shapes other than rectangles. Further, on the upper surface 12 on one side of the opening 11 of the first tape 10, an outer lead 14 is provided at one end facing the outer edge 13 of the first tape 10, and an inner lead 16 is provided at the other end facing the inner edge 15 of the opening 11. Multiple conductor lines 1
7, 17... are arranged in parallel so as to extend in the longitudinal direction of the first tape 10, and similarly, one end is connected to the upper surface 12 on the other side of the opening 11 of the first tape 10. A plurality of conductive paths 22, 22, . They are arranged parallel to each other. The reason why the conductive lines 17 and 22 are formed on both sides of the opening 11 is that one side serves as an input side and the other side serves as an output side.

The upper surface 1 of the first tape 10 on both sides of the opening 11
2 includes terminal conductive lines 25a to 25d, each of which includes only an outer lead 23 and whose other end ends as a terminal portion 24, and terminal conductive lines 28a and 28b, each of which includes only an inner lead 26 and whose other end terminates as a terminal portion 27. is installed.

In addition, each conductor path 17, 22 and the terminal conductor path 2
The inner leads 16, 21, 26 of No. 8 are connected to the opening 11.
connected to electronic components installed inside.

and the terminal conductive lines 25a and 28a,
Terminal conductive lines 25b and 28b, terminal conductive line 25
c and 28c, terminal conductor lines 25d and 28d
are electrically connected using the respective terminal portions 24 and 27, and these mutually connected terminal conductive lines 25a and 28a, 25b and 28b, 25c and 28c, 25d and 2
8d cannot intersect in a plane because the conductive path 17 or 22 is interposed between them.

Therefore, the present invention uses the second tape 30 described above. This second tape 30 extends around the opening 11 of the first tape 10, and the terminal conductive path 28 includes only the inner lead 26.
The opening 31 is sized to expose the terminal portion 27 of the terminal. Further, the second tape 30
The outer peripheral edge 32 is formed so as not to cover the terminal portion 24 of the terminal conductive line 25, which includes only the outer lead 23. Furthermore, the second tape 3
On the upper surface 33 of
Connecting conductive lines 34, 34, . and inner leads 36 are formed.

According to the above-described configuration, when the second tape 30 is adhered onto the first tape 10, the outer lead 35 and the inner lead 36 of each connecting conductive line 34 are joined to the terminal portion 24 of the terminal conductive line 25, 28, Terminal conducting lines 25a and 28a, 25b and 28b, 25c and 28c, 25d and 2
8d are connected to each other via connecting conductive lines 34.

Therefore, a cross-conducting line can be constructed without providing a through hole, and a compact tape carrier can be obtained.

As explained above, the tape carrier according to the present invention has a first tape carrier having an opening for electronic components in the center.
tape, and a second tape that is adhered onto the first tape and has an opening that extends to the periphery of the opening of the first tape, and on one side of the first tape, an inner lead faces the periphery of the opening, and A conductor path having an outer lead facing the outer periphery, and a terminal conductor path having only one of the outer lead and the inner lead and having the other end as a terminal portion on the surface of the first tape are formed,
The surface of the second tape has a connecting conducting path that connects the terminal portions of each pair of terminal conducting paths on the first tape when the second tape is adhered to the surface of the first tape. Therefore, it is possible to form a cross-conducting line without providing a through hole, and it has the excellent effect of achieving miniaturization.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a tape carrier according to the present invention, and FIG. 2 is a developed view of FIG. 1. 1... Tape carrier, 10... First tape,
11... Opening, 17... Conducting line, 22... Conducting line, 24... Terminal portion, 25... Terminal conducting line, 2
7...Terminal part, 28...Terminal conductor line, 30...
Second tape, 31...opening, 34...connecting conductor line.

Claims (1)

[Claims] 1 Consisting of a first tape having an opening for electronic components in the center, and a second tape adhered onto the first tape and having an opening extending to the periphery of the opening of the first tape, one side of the first tape includes a conductor path in which the inner lead faces the periphery of the opening and the outer lead faces the outer periphery, and a terminal having only one of the outer lead and the inner lead, the other end of which ends as a terminal portion on the surface of the first tape. A conductive line is formed, and the second
A tape carrier having, on the surface of the tape, a connecting conductive path that connects each pair of terminal portions of the terminal conductive paths on the first tape when the second tape is adhered to the surface of the first tape. .