JP2532424Y2 - Heat seal connector - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat seal connector, and more particularly, to a heat seal connector which can be easily positioned and has a reduced crimping area.

[0002]

2. Description of the Related Art In a conventional heat seal connector, as shown in FIG. 3, in order to prevent migration, a connection terminal 8 made of a material such as a silver-mixed conductor is formed at a distance of 0.3 mm from an edge of the heat seal connector. The position is set to about 0.5 mm inside. In this state, alignment (alignment) with an electrode terminal formed on a liquid crystal display or a printed circuit board is performed.

In order to improve the positioning accuracy, the size of the heat seal connector is about 1 mm adjacent to both sides of the connection terminal group (position about 1 mm from the outer connection terminals).
An alignment mark (alignment mark) having a cross shape of mm square was provided, and alignment was performed using this alignment mark.

[0004]

However, among the above-mentioned conventional heat-sealed connectors without an alignment mark, the heat-sealed connector is about 0.3 to 0.5 mm inward from the edge of the heat-sealed connector. However, since the connection terminals are located at the same position, accurate positioning is difficult even if the positioning is performed with reference to the connection terminals, and there has been a problem that poor crimping and poor electrical connection are likely to occur.

In a heat seal connector provided with an alignment mark, it is necessary to provide an alignment mark on both sides of a connection terminal group, so that there is a problem that the area of a crimping portion in the heat seal connector increases. Was.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has as its object to provide a heat seal connector which can be easily positioned and has a reduced crimping area.

[0007]

Means for Solving the Problems To achieve the above object, a heat seal connector according to the present invention is a heat seal connector in which connection terminals are formed at least on an insulating film surface. Forming the connection terminal so as to be located on the near side of the edge, and on the insulating film surface opposite to the surface on which the connection terminal is formed, from the edge of the insulating film to the position overlapping the connection terminal,
The alignment marks are provided in the same pattern as the connection terminals, and preferably, the alignment marks are formed by printing.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1A and 1B are a perspective view and a sectional view showing a connection state between a heat seal connector and a connection terminal on a liquid crystal display according to an embodiment of the present invention.

In these drawings, a printing section 2 is provided on a surface of a polyester film 3 of a heat seal connector 1.
Is provided. The printing unit 2 is formed over an appropriate length from the end of the heat seal connector 1 to the position where the conductor layers 4 and 5 described later are formed.
The printing unit 2 has the same line width and line interval (pitch) as the conductor layers 4 and 5 provided on the lower surface of the polyester film 3, and when viewed from directly above, as shown in FIG. 2 and the conductor layer 4 have an appropriate length (for example, 0.5 mm
Degree) It is made to overlap. As a method for forming the printing section 2, a method in which the printing section is not easily lost, such as print printing, is preferable. The material for forming the printing section is not particularly limited.

On the lower surface side of the polyester film 3, a conductor layer 4 and a conductor layer 5 are formed in an overlapping manner. The conductor layer 4 is formed of graphite (Gr), and the conductor layer 5 is formed of a material obtained by mixing silver (Ag) and graphite (Gr). In the heat seal connector, the conductor layer is usually composed of two layers as described above, and the conductor layer 4 and the conductor layer 5 are connected by thermocompression bonding so that conduction can be obtained.

A thermosetting adhesive layer (insulating layer) 6 is formed on the lower surface of the polyester film 3 so as to cover the conductor layers 4 and 5.

A connection terminal (electrode terminal) 11 is formed on the liquid crystal display 10. The line width and the line interval of the connection terminal 11 are determined by the conductor layers 4 and 5 of the heat seal connector 1.
Are formed so as to coincide with the line width and the line interval.

Next, a connection procedure using the heat seal connector of the present invention having the above-described configuration will be described. First,
The connection between the connection terminal 11 formed on the liquid crystal display 10 and the printing section 2 of the heat seal connector 1 is performed.

Next, connection is made by thermocompression bonding. The thermocompression bonding is performed by simultaneously applying appropriate heat (for example, 140 to 150 ° C.) and appropriate pressure (for example, 30 to 40 Kgf / cm ² ) to the heat seal connector 1 for a certain period of time. By this thermocompression bonding, the thermosetting adhesive layer 6 is melted and then cured to connect the conductor layer 5 of the heat seal connector 1 and the connection terminal 11 formed on the liquid crystal display 10.

Since the thermocompression bonding conditions vary depending on the use and shape of the liquid crystal display 10, individual temperatures, pressures and the like are examined from a temperature profile, a peeling test, and the like. Is preferably set.

It should be noted that the present invention is not limited to the above-described embodiment, and can be appropriately modified and implemented within the scope of the present invention.
For example, the printing unit 2 may be formed on the lower surface of the polyester film 3 by printing, and the printing unit 2 may be provided between the polyester film 3 and the thermosetting adhesive 6, that is, inside the heat seal connector 1. . Further, the present invention is not limited to a heat seal connector for a liquid crystal display, but may be used as a heat seal connector for connection with a connection terminal provided on a printed circuit board.

[0017]

As described above, the heat seal connector of the present invention can be easily positioned and can have a reduced crimping area.

[Brief description of the drawings]

FIG. 1 is a view showing a heat seal connector according to an embodiment of the present invention, FIG. 1 (a) is an external perspective view, and FIG. 1 (b).
Is a sectional view.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view showing a conventional heat seal connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Heat seal connector 2 ... Printing part 3 ... Polyester film 4 ... Conductor layer 5 ... Conductor layer 6 ... Thermosetting adhesive layer 10 ... Liquid crystal display 11 ... Connection terminal

Claims (2)

(57) [Scope of request for utility model registration] 1. A heat seal connector having a connection terminal formed on at least an insulating film surface, wherein the connection terminal is formed such that a tip end of the connection terminal is located closer to an end edge of the insulation film, and the connection is performed. A heat seal connector, comprising: an alignment mark having the same pattern as that of the connection terminal, provided on the surface of the insulation film opposite to the surface on which the terminal is formed, from the edge of the insulation film to a position overlapping with the connection terminal. 2. The heat seal connector according to claim 1, wherein the alignment mark is formed by printing.