JPH0142134Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field of the Invention> The present invention relates to an electronic component connecting device using a flexible substrate.

<Prior art> In recent years, small electronic devices such as small electronic desktop calculators have been made smaller and thinner by integrally mounting the keyboard unit, display unit, and electronic arithmetic circuit unit on a printed circuit board. Technical efforts are being made to achieve this goal.

Conventionally, a connection device for a liquid crystal display has a structure in which a connector made of elastic rubber or the like is provided between the liquid crystal display and a circuit board to connect corresponding electrodes, and the connectors are used to connect the respective electrodes.

However, as liquid crystal displays become smaller, this connector must also become smaller.
The drawback was that it was difficult to manufacture and the yield was poor. That is, when considering miniaturization/cost, conventional connectors had the disadvantage that miniaturization beyond a certain level would conversely lead to higher costs, and the cost of the electronic equipment used therein would also increase.

<Purpose of the invention> The object of the invention is to obtain an electronic component connecting device that employs a printed circuit board using a flexible substrate, connects electronic components rationally, and achieves thinning.

Hereinafter, an embodiment of the present invention will be described with reference to drawings.

<Embodiment> FIG. 1 shows a method of connecting a liquid crystal display 1 and a printed circuit board 2. In FIG. This uses a flexible board as a printed circuit board, and as shown in the exploded perspective view of Figure 2, the end 2' on the side connected to the liquid crystal display 1 is shaped like a U, and the liquid crystal display is placed in this recess. One of the glass plates 1a of 1 is engaged and inserted, and the tip portion 2' is pressed onto the glass plate 1a by the elasticity of the clip 5, which is made of a metal plate and processed into a U-shape. Of course, the liquid crystal drive connection terminals 3, 3 formed on the printed circuit board 2 side by this crimping
... and connection terminals 4, 4, etc. formed by vapor deposition on the glass plate 1a of the liquid crystal display 1 come into pressure contact, and electrical connection is established. The flexible printed circuit board 2 is now electrically and mechanically coupled to the liquid crystal display 1. In this example, the tip 2' of the printed circuit board 2 is shaped like a U-shape, in other words, it is crimped so as to surround the end of the glass plate 1a. will form a stronger bond. FIG. 3 shows a perspective view of the clip 5. FIG. 4 shows a film of, for example, copper, which is deposited on the opposite side of the printed circuit boards 3, 3, . . . on the U-shaped tip 2'. There are three areas 1a, 1b, 1c with copper films 6a, 6 in each area.
b, 6c are formed. In this case, the copper film 6c is formed at a position corresponding to the connection terminals 3, 3, etc., and is devised so that when the connection terminals 3, 3, etc. are crimped in a U-shape, special force is applied to the connection terminals 3, 3, etc. In addition, connection terminals 4, 4, . . . of the liquid crystal display 1 are provided.
Good electrical connection with In this case, each piece 5', 5', . . . of the clip 5 is also formed correspondingly.

<Effects> As explained above, in order to connect the circuit board and the electronic component by elastically crimping the connection wiring provided on the outer periphery of the flexible circuit board directly to the connection terminal of the electronic component, It can be connected reliably and easily directly in a small space without using conventional connectors that are expensive to manufacture and have poor yields, and is suitable for use in electronic devices that require downsizing and thinning. In particular, on the back side of the flexible board, a copper film is positioned as connection terminals to more firmly hold the formed electronic components, and furthermore, a U-shape is formed with a plurality of elastic pieces corresponding to the connection terminals. By elastically sandwiching the flexible substrate that is in superimposed contact with the connecting terminal of the electronic component with the shaped connecting tool, the connection between the flexible substrate and the connecting terminal can be made stronger in conjunction with the structure of the flexible substrate, Disconnection due to vibrations, etc. can be reliably prevented, and since the copper film is integrated with the flexible substrate, there is no need to provide special auxiliary parts, and the number of parts is small, making assembly convenient.

[Brief explanation of drawings]

Figure 1 is a schematic diagram showing an example of connection between a liquid crystal display and a printed circuit board, Figure 2 is an exploded perspective view of Figure 2, Figure 3 is a perspective view of a clip, and Figure 4 is a printed circuit. FIG. 3 is a plan view showing a copper film at the tip of the substrate. 1...Liquid crystal display body, 2...Printed circuit board,
3... Connection terminal for liquid crystal drive, 4... Connection terminal, 5
...Connection body.

Claims (1)

[Scope of Claim for Utility Model Registration] An electronic component consisting of a liquid crystal display or the like with connection terminals provided on its outer periphery, and a surface outer periphery with wiring formed on the surface, formed in a U-shape so as to sandwich the connection terminals of the electronic component. a flexible substrate that connects the wiring to the connection terminal by making superimposed contact with the electronic component; and a copper plate at a position corresponding to the connection terminal on the back surface of the outer peripheral portion of the flexible substrate that is the connection portion of the flexible substrate with the connection terminal of the electronic component. and a U-shaped connecting body having a plurality of elastic pieces corresponding to the connecting terminals, in order to press the flexible substrate that is in superimposed contact with the connecting terminals of the electronic component with elastic force. An electronic component connecting device comprising: