JPS61200653A - Connecting device for substrate terminal - Google Patents

Abstract

PURPOSE:To enable to contact all the terminal electrodes with no inadequate connection, by placing a flexible conductive member between the row of terminal electrodes on the substrate and a cap member connected to the board. CONSTITUTION:Under a cap member 4 is arranged a concave groove 4a to oppose a row of terminal electrodes 7, and between the groove 4a and the row of electrodes 7 is placed a conductive spring 5. This spring 5 is flexible and variable in form in the direction of the radius, and the variable area extends to the all axial area, contacting the all electrodes of the terminal electrode row in an even strength without unevenness of contacting power. Therefore, the all electrodes 7a are contacted to the member 4 through the spring 5, and any failure of adequate connection of electrodes can be prevented.

Description

Detailed Description of the Invention (Technical Field) The present invention relates to a substrate terminal connection device that uniformly connects terminal electrode arrays formed at a predetermined pitch on a substrate such as a glass substrate to other conductors.

(Prior Art) When uniformly connecting terminal electrode rows formed at a predetermined pitch on a substrate such as a glass substrate to other conductors, conventionally, there is a gap between the other conductor and the terminal electrode row. A configuration is adopted in which an ultra-thin metal plate is inserted, or the metal plate is formed into a comb shape, the tips of the comb teeth are bent in a circular motion, and this bent part is elastically pressed against the electrode. However, in the former case, depending on how you hold the metal plate, the metal plate may be slightly deformed.
In the latter case, if the width of the comb teeth is made narrower, the contact pressure decreases, causing a connection failure in some electrodes, or if the width of the comb teeth is narrowed, If the electrodes are widened so that they touch each other, the contact pressure for each electrode is not equal, and there is also the problem that poor connection occurs in some electrodes.

(Objective) An object of the present invention is to prevent connection failures from occurring in all of the terminal electrode arrays formed at a predetermined pitch on a substrate.

(Structure) In order to achieve the above object, the present invention provides a structure in which a terminal electrode array on a substrate and a concave groove of a holding member fastened to a base are elastically deformable in the radial direction. It is characterized by interposing an elastic conduction member that exerts an elastic deformation region over the entire axial direction.

The present invention will be explained below based on one embodiment.

In FIG. 1, reference numeral 1 indicates a glass substrate, 2 a substrate support member made of synthetic resin, 3 a base made of a metal conductor, and 4 a holding member also made of a metal body.

As shown in FIG. 2, the glass substrate 1 is fitted into a frame 2a at the top of the substrate support member 2. Further, both side ends of the substrate support member 2 are fitted into the fork-shaped support portions 3a of the base 3. In this embodiment, the base 3 supports the glass substrate 1 and the substrate support member 2.
It is supposed to be supported through. In addition, one end of a lead wire 12 is connected to the base 3, and the other end is connected to an appropriate power supply circuit.

In FIG. 2, a terminal electrode array 7 in which terminal electrodes 7A are arranged at a predetermined pitch in the longitudinal direction of the glass substrate 1 is provided on the surface of the side end portion of the glass substrate 1. Each terminal electrode 7A is also connected to an electrode 8 provided on the glass substrate 1. In this embodiment, a plurality of electrodes 8 are commonly connected to one terminal electrode 7A, and one electrode is connected to the terminal electrode of the first order, and such different types of connections are alternately made. It is now possible to

These electrodes are manufactured by, for example, depositing aluminum on the glass substrate 1. FIG. 3 shows an enlarged view of the electrode 8. A fluorescent material is electrodeposited on the electrode 8 by, for example, electrophoresis, and a fluorescent material 9 is formed in the shape of a dot.

As shown in FIG. 2, the phosphors 9 are arranged in one direction at extremely small pitches, and as each phosphor selectively emits light, the light is directed in the direction of the arrow in FIG. ,
The photoreceptor is imaged onto a photoreceptor through an imaging element, such as a focusing light transmitter array, to form an electrostatic latent image on the photoreceptor.

In FIG. 2, in order to make the entire terminal electrode 7A electrically conductive to other conductors evenly, there have been conventional problems as described below.

As mentioned above, the terminal electrode 7A etc. are made by vapor depositing aluminum on a glass substrate, but after this vapor deposition,
For example, to protect aluminum electrodes and improve their conductivity,
The surface of the electrode is further coated with silver plating, etc., and depending on the way the silver plating is applied, the flatness of the electrode may be impaired.

If the flatness of individual electrodes is impaired, there is a risk that all the electrodes will not be equally connected to other conductors, so conventionally, as shown in FIG. A method was adopted in which the comb tooth portion as shown in the figure is brought into elastic contact with the terminal electrode 7A. In this method, for example, when the width of the comb teeth is narrowed, the contact pressure to each terminal electrode decreases, resulting in poor connection to some of the electrodes. Furthermore, if the width of the comb teeth is widened so that the comb teeth are in contact with a plurality of electrodes, the contact pressure between the electrodes will not be equalized, and there is a possibility that a connection failure may occur in some of the electrodes. If such a connection failure occurs, the phosphor connected to this connection system may stop emitting light.

The present invention is an answer to these problems.

In FIG. 2, a holding member 4 made of a conductor is shown.

When this is fastened to the base 3 with screws 6, a groove 4a facing the terminal electrode array 7 is provided.

A conductive spring 5 is interposed between the groove 4a and the terminal electrode array 7. This spring 5 is wound so finely that adjacent circular sections touch or do not touch all the terminal electrodes 7A.

Due to this characteristic, the spring 5 is elastically deformable in the radial direction, and this elastic deformation region extends over the entire axial direction. The spring 5 constitutes an example of an elastic conductive member having such a function, and contacts all the electrodes of the terminal electrode array with equal force. Namely.

This eliminates variations in contact force. Therefore, all the electrodes 7A are reliably connected to the holding member 4, which is a conductor, via the spring 5, and problems such as connection failure in some electrodes are prevented.

By the way, in FIG. 1, the spring 5 is connected to the terminal electrode 7.
The diameter is slightly larger than the distance from the top surface of A to the ceiling 4b of the groove, and when the holding member 4 for holding down the spring 5 is fastened to the base 3, the spring 5 is moved in the radial direction. The expansion behavior at this time achieves the pressure contact function with respect to the terminal electrode 7A. In the embodiments described above, since it is sufficient to simply mount the spring 5, the electrode connection can be made extremely easily.

Further, there is no need to manufacture a complicated metal plate as shown by the reference numeral 11 in FIG.

Next, the embodiment shown in FIG. 5 will be described.

This embodiment shows a spring 5 which is an example of an elastic source passing member.
Press uniformly from above in the axial direction.

A spring holding means is added.

A thin elastic metal plate 15 is loosely fitted into the groove 14a of the holding member 14, while an elastic metal plate 16 having a plurality of teeth is fastened to the upper part of the holding member 14 with screws 17. A pin 18 made of a conductor is fitted into the hole 14b bored in the holding member 14 so as to be able to slide up and down, and this pin 18 is pressed against the elastic metal plate 16 as shown in FIG. , and this metal plate 15 presses down the spring 5.

In this embodiment, the contact force of the spring 5 with respect to the terminal electrode 7A is further strengthened due to the elastic action of the elastic metal plate 16 itself. Moreover, since it is through the elastic metal plate 15, the pressing force is dispersed, and the contact force is
This can be done evenly over all terminal electrodes, and the connection of the terminal electrodes can be further ensured over all the terminal electrodes. Note that although the number of pins 18 is arbitrary, it is preferable to increase the number of pins 18. Comparing this embodiment with the embodiment shown in FIG. 1, the spring 5 used in the embodiment shown in FIG. 1 is slightly larger than the distance from the top surface of the terminal electrode 7A to the ceiling 4b of the groove. However, in the embodiment shown in FIG. 6, the spring 5 is pressed by an independent pressing means different from the pressing member 14, so there is no need to strictly define the diameter of the spring 5. .

Note that the elastic metal plate 15 is not limited to a rigid body, and may also be a foil-shaped one. Furthermore, in the embodiments shown in FIGS. 5 and 6, the holding member 14 may be made of a non-conductor instead of a conductor, and a lead wire may be connected directly to the elastic metal plate 15. Note that the present invention can also be applied to electrodes manufactured by applying silver plating or silver paint for the purpose of protecting the electrodes after vapor deposition of aluminum.

(Effects) As described above, since the present invention connects the terminal electrode array to the conductor side via the two elastic source connecting members, it is possible to prevent connection failures from occurring across all the terminal electrodes. Moreover, such a connection can be made extremely easily.

Furthermore, another invention is such that another pressing means for the elastic conduction member is added that can press the elastic conduction member uniformly from above in the axial direction.
The contact force against the terminal electrode array can be further strengthened,
Moreover, there is no need to strictly define the diameter of the elastic conductive member.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an embodiment of the present invention, Fig. 2 is an exploded perspective view of the same embodiment, Fig. 3 is an enlarged perspective view of an electrode on which a dot-shaped phosphor is formed, and Fig. 4 is a diagram of a conventional device. FIG. 5 is an exploded perspective view of another embodiment of the present invention, and FIG. 6 is a perspective view showing an electrode connection method.
The figure is a sectional view of the same embodiment. 1... Glass substrate, 3... Base, 4, 14...
...Press member, 4a, 14a...Concave groove, 5...
Spring, 7...Terminal electrode row, 15.16...
...Elastic metal plate, 17...screw, 18...pin. Old 'self 5 1 Figure 5 Figure 2 Figure - 5 Figure sound G Figure

Claims (1)

[Claims] 1. A terminal electrode array arranged at a predetermined pitch in one direction, a substrate on which the terminal electrode array is formed, a base for supporting the substrate, and fastened to the base. In this state, a presser member provided with a concave groove facing the terminal electrode array, interposed between the concave groove and the terminal electrode array, and elastically deformable in the radial direction, the terminal electrode array and an elastic conductive member having a circumferential surface in contact with all the electrodes, the elastic conduction member having the elastic deformation region extending over the entire area in the axial direction. 2. A terminal electrode array arranged at a predetermined pitch in one direction, a substrate on which the terminal electrode array is formed, a base for supporting the substrate, and the A holding member provided with a groove facing the terminal electrode array, and a holding member interposed between the groove and the terminal electrode array, elastically deformable in the radial direction, and in contact with all electrodes of the terminal electrode array. The elastic conductive member has a circumferential surface and has a region of elastic deformation applied over the entire area in the axial direction, and an elastic conductive member pressing means that presses the elastic conductive member uniformly from above in the axial direction. A board terminal connection device consisting of: