JP2000150033A - Connecting structure of plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow simple connection and separation of a monitor part with/ from a printed circuit board for driving a monitor and allow easy connection of a flexible board to generate electric connections of the two members. SOLUTION: A supporting member 14 is fixed to a back-face glass board 10a of a monitor part 10, and a printed circuit board 12 for driving the monitor is fixed to the supporting member 14 in such a way as easily separable. One end of a flexible board 16 is made connectable and separable to/from a connector 18 for flexible board installed on the printed circuit board 12 while the other end of the board 16 is fixed by hot press attachment to the back-face glass board 10a, and the monitor part 10 is connected electrically with the printed circuit board 12. The connector 18 for flexible board generates electric connections by resiliently abutting a connection electrode at one end of the flexible board 16 directly to a terminal electrode installed on the printed board 12 in a position confronting the connection electrode.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel connection structure in which a monitor section and a monitor drive printed circuit board for driving and controlling the monitor section can be connected and separated freely.

[0002]

2. Description of the Related Art Plasma display panels have been widely used for flat wall televisions and the like. this is,
The monitor driving printed circuit board is arranged in parallel with the monitor via a support member fixed to the rear glass substrate. Then, the monitor section and the monitor drive printed circuit board for driving and controlling the monitor section are electrically connected by a flexible board. Here, in the conventional connection structure, both ends of the flexible substrate are thermocompression-bonded to the rear glass substrate of the monitor section and the monitor driving printed circuit board, respectively, and the connection electrodes of the flexible substrate are connected to the rear glass substrate and the monitor driving printed circuit. It is electrically connected to terminal electrodes provided respectively on the circuit board. Alternatively, one end of the flexible substrate is thermocompression-bonded to the rear glass substrate and electrically connected thereto, and the other end is fixed to the monitor driving printed circuit board with a clip to make an electrical connection.

In this thermocompression bonding, a conductive and thermosetting adhesive is applied to electrodes to be electrically connected, a flexible board and a printed circuit board are accurately positioned and overlapped, and heat is applied by an iron to apply the adhesive. It is to be cured. In addition, the clip is such that the flexible substrate and the printed circuit board are accurately positioned and overlapped, and the two superposed boards are mechanically clamped by the clip.

[0004]

By the way, as the size of the monitor is increased, the whole weight of the connection structure of the plasma display panel is increased. For the convenience of handling at the time of manufacturing, the monitor and the monitor driving printed circuit are required. It is desired that the substrate has a structure that can be easily connected and separated. However, even if the monitor drive printed circuit is fixed to the monitor with screws, etc., and these screws are loosened, the monitor drive printed circuit board can be relatively easily separated from the monitor, even if they are electrically connected. Both ends of the flexible substrate are thermocompression-bonded to each other and cannot be substantially separated. Since the number of connection electrodes and terminal electrodes for voltage is extremely large, a large number of them are arranged at a fine pitch of about 0.3 mm. Once the flexible substrate is thermocompressed, remove it once. When the thermocompression bonding is performed again, the reliability of the electrical connection is impaired. In addition, the work of connecting the flexible substrate by thermocompression bonding
The adhesive must be cured by applying heat with an iron while the one end of the flexible substrate is positioned with high precision, and the fine pitch of the electrodes makes it difficult to perform visual alignment, resulting in poor workability. It is bad, and it is easy to cause displacement of the flexible substrate when ironing, and the work is complicated and defective products are easily generated. In addition, this defective product cannot be regenerated by performing thermocompression bonding again, and is not suitable for mass production.

Further, even when the flexible substrate is electrically connected to the monitor driving printed circuit board by a clip, the substrate is mechanically deformed by being strongly pressed by the clip, and the pitch interval is likely to be shifted. Once separated and connected again by clips, the reliability of the electrical connection is impaired. In addition, if any force in the direction of shifting is applied to the flexible substrate after being fixed with the clip, there is a problem that the terminal electrode and the connection electrode are relatively shifted and the electrical connection is likely to be inappropriate.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances of the related art, and enables a monitor section and a monitor driving printed circuit board to be easily connected and separated, and also facilitates electrical connection of a flexible board. It is an object of the present invention to provide a connection structure for a plasma display panel.

[0007]

In order to achieve the above object, a connection structure for a plasma display panel according to the present invention comprises a monitor section and a monitor drive printed circuit board for driving and controlling the monitor section, which are electrically connected via a flexible board. The flexible board connector is connected to and separated from the flexible board by a flexible board connector, and the flexible board connector is elastically connected to one end of the flexible board via an elastic member by a lock member in a predetermined swinging posture. The lock member is configured so as not to bend in the predetermined swing posture.

[0008] The monitor driving printed circuit board may be fixedly arranged so as to be separable on a support member fixed to the rear glass substrate of the monitor section.

Also, one end of the flexible substrate is
The flexible printed circuit board may be configured so that it can be freely connected to and separated from a connector for a flexible board provided on the monitor drive printed circuit board, and the other end of the flexible board is fixed to the monitor section by thermocompression bonding.

Further, the flexible board connector resiliently presses one end of the flexible board against the monitor driving printed circuit board, and connects the connection electrode provided on the flexible board to the monitor driving printed circuit board. It is also possible to adopt a configuration in which the terminal electrode provided on the printed circuit board is brought into direct contact with the terminal electrode to be electrically connected.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an external perspective partial view of one embodiment of a connection structure for a plasma display panel according to the present invention. FIG. 2 is a rear view of one embodiment of the connection structure of the plasma display panel of the present invention. FIG.
It is sectional drawing of the center part of the connector for flexible substrates shown in FIG. 4A and 4B are external views of the flexible board connector shown in FIG. 3, wherein FIG. 4A is a front view and FIG. 4B is a plan view.

In FIG. 1 and FIG. 2, the connection structure of the plasma display panel is such that a monitor unit 10 and a monitor drive printed circuit board 12 which is driven and controlled by the monitor unit 10 are appropriately electrically connected to a back surface thereof. Connected and configured. The connection structure is as follows. First, on the back glass substrate 10a of the monitor unit 10,
A support member 14 made of an insulating resin or the like is appropriately bonded and fixed, and the monitor driving printed circuit board 12 is disposed and fixed to the support member 14 in parallel so that it can be relatively easily removed with a screw 20 or the like. Also, on the surface of the rear glass substrate 10a, a large number of voltage terminal electrodes are appropriately provided at a fine pitch of, for example, 0.3 mm. One end of the back glass substrate 1 is thermocompressed.
0a and are electrically connected. further,
The monitor drive printed circuit board 12 is provided with a flexible board connector 18 having a structure to be described later. The flexible board connector 18 is disposed at a position corresponding to a terminal electrode provided on the monitor drive printed circuit board 12.
8, the other end of the flexible board 16 is inserted, and the inserted portion is elastically pressed by the monitor driving printed circuit board 12 to
Are directly in contact with the terminal electrodes of the monitor drive printed circuit board 12 to make electrical connection. Note that the signal terminal electrodes are also electrically connected in the same manner.

Next, the structure of the flexible board connector 18 will be described with reference to FIGS. 3 and 4. FIG. A pair of arm portions 30a, 30a is provided on a housing 30 made of an insulating resin or the like with an interval corresponding to the width of the flexible substrate 16.
a is provided, and a metal shaft 32 having appropriate rigidity is mounted around the pair of arm portions 30a, 30a. The metal shaft 32 is prevented from coming off in the axial direction by set screws screwed to the arm portions 30a at both ends. A lock member 34 made of an insulating resin or the like is provided on the metal shaft 32 so as to be able to swing around the axis at least in a range of at least about 90 degrees.
In addition, the lock member 34 is provided with a lever 34a for swinging the lock member 34. Further, the flexible board 16 is resiliently contacted with the monitor driving printed circuit board 12 in a predetermined swinging posture (the posture indicated by a solid line in FIG. 3) in the width direction in the locking member 34. An elastic member 36 made of an elastic rubber member or an elastic resin member is provided. The predetermined swing posture is such that the elastic member 36 pushes the flexible board 16 at right angles to the thickness direction by a small angle θ and the housing 30
This is a posture in which the swing is regulated by. The lock member 34 has a substantially rectangular or substantially elliptical cross section, and the metal shaft 32 is disposed at a position deviated to one of its long axes,
An elastic member 36 is provided so as to elastically bias toward the other end on the long axis. Therefore, the flexible board 16 is moved between the lock member 34 and the monitor drive printed circuit board 12 in the substantially rectangular or substantially elliptical short axis direction in another rocking posture of the lock member 34 (posture indicated by a broken line in FIG. 3). A gap is formed which can be easily inserted and arranged at a predetermined position. It is needless to say that the housing 30 is disposed at an appropriate position facing the terminal electrodes provided on the monitor drive printed circuit board 12. In the embodiment, the housing 30 is disposed at the edge of the monitor driving printed circuit board 12 and facing the support member 14.

Therefore, in the flexible board connector 18 having such a configuration, first, the lock member 34 is set to the swinging posture shown by the broken line in FIG. 3 to form a gap between the lock member 34 and the monitor drive printed circuit board 12. One end of the flexible board 16 is inserted into this gap. By this insertion, the flexible substrate 16 is positioned by the pair of arm portions 30a, 30a. Next, the lever 34a is swung to swing the lock member 34 to push the flexible substrate 16 perpendicularly in the thickness direction by a small angle θ and a predetermined swing indicated by a solid line in FIG. The moving posture is assumed. Then, the elastic member 36 elastically urges the flexible substrate 16 in a long linear or elongated band shape in the width direction, and makes the flexible substrate 16 elastically contact the monitor driving printed circuit board 12 to make an electrical connection. Here, since the elastic member 36 is pressed, the partial thickness variation of the flexible substrate 16 and the like is sufficiently absorbed, and the pressing is performed almost uniformly, so that any terminal electrode and the connection electrode are securely connected electrically. Is obtained. Moreover, in the predetermined swing posture shown by the solid line in FIG. 3, in order to operate the lever 34a to the release side, a large force enough to pass the position where the flexible substrate 16 is pressed orthogonally to the thickness direction is required. This is necessary, and the lock member 34 does not swing in the release direction with a small force.
In addition, the elastic member 36 is arranged so as to bite into the wedge shape with respect to the force in the direction in which the flexible substrate 16 is pulled out from the housing 30, and the wedge-like effect prevents the flexible substrate 16 from coming off. As a result, the locking member 34 is securely locked and the detachment of the flexible board 16 is prevented, so that the flexible board 16 and the monitor driving printed circuit board 12 can be reliably connected.
Is obtained. Further, when the lock member 34 is in the predetermined swinging posture, the force required to operate the lever 34a is maximum when the elastic member 36 presses the flexible board 16 orthogonally to the thickness direction. Beyond this, it decreases. Therefore, the operator can obtain a feeling that the lock operation by the lock member 34 has been completed by the change in the force required for this operation.

The lock member 34 is made of resin and is easily bent by itself. However, the rigidity of the metal shaft 32 penetrating the lock member 34 prevents the lock member 34 from bending. Similarly, the monitor drive printed circuit board 12 itself is easily bent, but the monitor drive printed circuit board 12 is disposed so as to overlap the support member 14, and the bending of the monitor drive printed circuit board 12 is prevented by the rigidity of the support member 14. . Therefore, a pair of arm portions 30a, 30a
Even if the distance between is set long, it can be pressed evenly in the width direction,
A connector having a large number of electrodes can be provided.

In this configuration, the support member 14 is bonded and fixed to the rear glass substrate 10a of the monitor section 10 and one end of the flexible board 16 is thermocompression-bonded to the monitor drive printed circuit board 12 by screwing.
0, the other end of the flexible board 16 is inserted into a gap formed in the flexible board connector 18 provided on the monitor drive printed circuit board 12, and the lever 34a is further swung to connect the flexible board 16 to the connection electrode. Is directly in contact with the terminal electrode of the monitor drive printed circuit board 12 to make an electrical connection. Thus, the monitor unit 10 and the monitor driving printed circuit board 12 are electrically connected to form a plasma display panel. When the monitor unit 10 and the monitor driving printed circuit board 12 are separated as necessary, for example, first, the lever 34 a of the lock member 34 is swung to the release side, and then the flexible board 16 is connected to the flexible board connector 1.
8 to disconnect the electrical connection and to be physically separated. Further, the screw 20 may be loosened, and the monitor drive printed circuit board 12 may be removed from the monitor unit 10.

A flexible board connector 18 is provided on the monitor section 10 by adhesive bonding, and one end of the flexible board 16 is connectable and separable, and the other end of the flexible board 16 is connected to the monitor drive printed circuit board. 12 may be fixed by thermocompression and electrically connected. The monitor section 10 and the monitor driving printed circuit board 1 are formed by using two flexible substrates 16.
2 and one end of a flexible substrate 16 is connected and fixed by thermocompression bonding, and two flexible substrates are connected to a flexible substrate connector 18 appropriately provided on either the monitor unit 10 or the monitor driving printed circuit board 12. The other ends of the 16 may be inserted one above the other, sandwiched and electrically connected to each other. It is sufficient that a flexible board 16 that can be connected and separated is used for a line that transmits a voltage with a very large number of lines between the monitor unit 10 and the monitor driving printed circuit board 12, and a line that transmits a signal with a small number of lines. May not necessarily be separable by thermocompression bonding or the like. This means that if the number of lines is not large, the electrode pitch can be widened,
This is because the reliability of the electrical connection is not lost even if the electrical connection is removed by thermocompression or the like and the connection is made again by thermocompression. Further, the flexible board connector 18 is not limited to the structure in which the connection electrodes of the flexible board 16 and the terminal electrodes of the monitor drive printed circuit board 12 are directly in contact with each other. The connection electrodes of the flexible board 16 may be electrically connected to the terminal electrodes of the monitor drive printed circuit board 12 via an arrayed elastomer or a both-end movable spring connector. Further, the predetermined swinging posture of the lock member 34 for elastically pressing the flexible substrate 16 and electrically connecting the flexible substrate 16 may be a posture for pressing the flexible substrate 16 orthogonally to the thickness direction. It is.

[0018]

As described above, since the connection structure of the plasma display panel of the present invention is constituted,
It has the following special effects.

In the connection structure for a plasma display panel according to the first aspect of the present invention, the flexible board connector allows the flexible board for electrically connecting the monitor section and the monitor drive printed circuit board to be freely connected and separated. The electrical connection between the monitor drive printed circuit board and the monitor drive circuit board can be easily separated. In addition, connection and fixation of the flexible board by the connector for the flexible board is a simpler operation than that of connection and fixation of the flexible board by thermocompression bonding, and is suitable for mass production. Further, since the lock member in a predetermined swing posture for elastically pressing the flexible substrate and electrically connecting the flexible substrate is configured not to bend, the flexible substrate can be pressed evenly, Connection is secure.

In the connection structure for a plasma display panel according to the present invention, the monitor drive printed circuit board can be separated from the monitor section.
By separating the electrical connection of the flexible board by the flexible board connector, the monitor section and the monitor drive printed circuit board can be easily separated from each other.

According to a third aspect of the present invention, one end of the flexible substrate is thermocompression-bonded to the monitor, and the other end is provided on the monitor drive printed circuit board. The structure is very easy to manufacture because it can be connected and separated by the flexible board connector. This is because mounting holes etc. cannot be drilled on the rear glass substrate of the monitor part,
It is limited to fixing by bonding, and the flexible substrate must be connected and fixed by thermocompression bonding. However, the mounting hole can be easily formed in the monitor driving printed circuit board, and the connector for the flexible board can be easily fixed.
Therefore, the operation of mounting with the flexible board connector is simpler than that of thermocompression bonding.

Further, in the connection structure of the plasma display panel according to the fourth aspect, since the connection electrode of the flexible substrate is in direct contact with the terminal electrode of the monitor driving printed circuit board and is electrically connected, the resistance value is increased. And a reliable electrical connection with a small size can be achieved.

[Brief description of the drawings]

FIG. 1 is an external perspective partial view of one embodiment of a connection structure for a plasma display panel according to the present invention.

FIG. 2 is a rear view of one embodiment of the connection structure of the plasma display panel of the present invention.

FIG. 3 is a sectional view of a central portion of the flexible board connector shown in FIG. 1;

4A and 4B are external views of the flexible printed circuit connector shown in FIG. 3, in which FIG. 4A is a front view and FIG. 4B is a plan view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Monitor part 10a Back glass substrate 12 Monitor drive printed circuit board 14 Support member 16 Flexible substrate 18 Connector for flexible substrate 20 Screw 30 Housing 32 Metal shaft 34 Lock member 36 Elastic member

Continued on the front page F-term (reference) 5C040 GK11 GK12 GK14 GK20 LA17 MA22 MA26 5C094 AA32 AA41 AA42 AA43 BA31 DA09 DB01 5E021 FA05 FA16 FB02 FB08 FC07 FC29 HA07 HB02 HB11 HB15 5E023 AA04 CCB BB CC DD18 DD19 DD20 DD26 DD28 EE21 FF03 GG09 HH01 HH08 HH18 HH22 HH28 5G435 AA07 AA17 BB06 EE47 KK09

Claims (4)

[Claims] A flexible printed circuit board for connecting and disconnecting a monitor section and a monitor driving printed circuit board for driving and controlling the monitor section via a flexible board; The board connector elastically presses one end of the flexible board through an elastic member by a lock member in a predetermined swing posture to make electrical connection, and the lock member flexes in the predetermined swing posture. A connection structure for a plasma display panel, wherein the connection structure is configured so as not to be caught. 2. The connection structure for a plasma display panel according to claim 1, wherein the monitor driving printed circuit board is fixedly disposed on a supporting member fixed to a rear glass substrate of the monitor section. A plasma display panel connection structure characterized by the following. 3. The connection structure for a plasma display panel according to claim 2, wherein one end of the flexible substrate is connectable and separable to a connector for a flexible substrate provided on the monitor driving printed circuit board, and A connection structure for a plasma display panel, wherein the other end is fixed to the monitor by thermocompression bonding. 4. The connection structure for a plasma display panel according to claim 3, wherein the connector for the flexible substrate elastically presses one end of the flexible substrate against the monitor driving printed circuit board and is provided on the flexible substrate. A connection structure for a plasma display panel, wherein the connection electrode is directly contacted with a terminal electrode provided on the monitor driving printed circuit board so as to be electrically connected thereto.