JPH11327458A - Plane display device, its manufacture and connector for connecting cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and accurate execute electrical connection between a specific panel and a circuit board for driving the panel through a wiring cable in a plane display device such as a plasma display panel and to simply separate their connection also. SOLUTION: The plane display device provided with a display panel and a circuit board 8 for driving the panel has cable connection constitution consists of a 1st block body for supporting the end part of a wiring cable 6 and pressing the end part to an electrode terminal group 4 arranged on a substrate of the display panel and a 2nd block body constituting an elastic block body having an approximately U-shaped cross section and capable of fixing the electrode terminal group 4 and the cable 6 electrically connected to each other by the depression of the 1st block body while holding the substrate between both the 1st and 2nd block bodies.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat display device such as a plasma display panel or a liquid crystal display panel and a method of manufacturing the same, and more particularly, to wiring an electrode terminal led to an end of a substrate and a circuit substrate for controlling the electrode terminal. The present invention relates to an apparatus having a configuration for electrically connecting using a cable, a method for manufacturing the same, and a cable connecting connector used for connection.

The number of electrodes of a flat display device tends to increase in order to improve image quality, and a large number of electrode terminals are arranged at short pitches. There is a need to do it simply and accurately.

[0003]

2. Description of the Related Art FIG. 8 is a perspective view of a conventional flat panel display. The display device 31 is made of a glass plate or the like and has stripe-shaped electrodes on the inner surface thereof. The front substrate 32 and the back substrate 3 are bonded such that the electrodes are orthogonal to each other.
3. It is composed of a circuit board 38 mounted on the rear substrate 33 via the chassis 37.

As shown in FIG. 8, a front substrate 32 and a rear substrate 33 constituting a display panel are bonded so that both ends of respective opposing surfaces are exposed. , That is, an electrode terminal 34 is disposed. FIG. 8 shows a state where only the electrode terminals 34 of the front substrate 32 are visible. Front substrate 32 and rear substrate 33
Are controlled by signals from the circuit board 38 to perform a desired display, but have flexibility in which conductive lines are disposed in a film made of an insulating material as a means for transmitting signals. The flexible cable 36 is used.

The flexible cable 36 is connected between the electrode terminal 34 and the circuit board 38 as shown in FIG.
Conventionally, a thermocompression bonding technique has been used as a method of bonding to No. 4. FIG. 8 shows a state in which a circuit board connected to the flexible cable 36 is not partially mounted on the chassis 37. Although not shown, the circuit board connected to the flexible cable 36 has an edge for the circuit board. It is mounted on the chassis 37 via a connector or the like.

FIG. 9 shows a connection structure and a connection method between an electrode terminal 34 and a flexible cable 36 according to the prior art.
This will be described with reference to FIG. 9A and 9B are diagrams showing a connection process according to the related art, where FIG. 9A is a cross-sectional view and FIG.
Is a plan view. Conventionally, the connection between the electrode terminal 34 and the flexible cable 36 is performed by thermocompression bonding with a thermocompression bonding device 41 via a conductive adhesive film 39 as shown in FIG.

[0007] The flexible cable 36 is shown in FIG.
As shown in FIG. 3, the conductive wire 36a is made of a flexible insulating film in which the conductive wire 36a is disposed.
The conductive adhesive film 39 is adhered to a portion where is exposed, and this portion is thermocompression-bonded. The conductive adhesive film 39 is a film in which metal particles of an appropriate particle size and quantity are contained in a thermosetting insulating resin. Only the conduction can be obtained, and the adhesive strength can be obtained by curing the molten resin.
Since a plurality of metal particles are not connected in the in-plane direction, there is no danger of short-circuiting between adjacent electrode terminals.

[0008] The thermocompression bonding step is performed using a thermocompression bonding apparatus 41 as shown in FIG. The thermocompression bonding device 41
The flexible cable 36 and the front substrate 32 are sandwiched between the flexible cable 36 and the front substrate 32 at a predetermined temperature and pressure to melt the conductive adhesive film 39 as described above. The flexible cable 36 and the electrode terminal 34 are fused.

As described above, since the conductive adhesive film 39 can conduct electricity only in the thickness direction, it can be applied to a display panel having a large number of electrodes and a narrow pitch. The contact portion between the heater block 42 and the backup block 44 is covered with an elastic member for preventing the display panel from being damaged. The conventional thermocompression bonding process described above is also disclosed in, for example, JP-A-8-255568.

[0010]

In the conventional connection by thermocompression, a thermocompression device 41 is used as shown in FIG. 9A, so a large-scale device including a drive system and a control system is required. Further, it is necessary to control the temperature and the pressure, and the process is troublesome and causes a decrease in production efficiency.

Furthermore, since the connection is made by fusing the conductive adhesive film, if it becomes necessary to peel off the flexible cable for some reason, it must be peeled off while applying heat again, which is troublesome. In addition, the possibility of damaging the electrode terminals is great. The present invention
An object of the present invention is to provide a structure and a method capable of solving the above-mentioned problem, making it possible to easily and accurately connect a flexible cable to an electrode terminal, and easily separating the flexible cable.

[0012]

According to a first aspect of the present invention, there is provided a flat panel display device, wherein an electrode terminal group exposed at an end of a display substrate and a circuit board are electrically connected by a wiring cable. A first block body that supports an end of the wiring cable and presses the end against an electrode terminal group on the substrate; It is characterized by comprising a second block body for fixing the electrode terminal group and the wiring cable, which are electrically connected by pressing the block body, by holding the first block body and the substrate therebetween.

According to the present invention, the first block body and the display substrate are sandwiched by the second block body having a simple structure with the wiring cable interposed therebetween.
Since electrical connection between the display electrode of the display substrate and the wiring cable can be performed, simple connection that does not require a large-scale device and complicated control is possible. Also, the second
By removing the block body, the wiring cable and the display substrate can be easily separated.

According to a second aspect of the present invention, in the flat display device, a slit is formed in the second block so as to penetrate the wiring cable, and the second block is slid with respect to the wiring cable by the slit. It is made possible. According to the present invention, by sliding the second block body held by the flexible cable along the flexible cable, the first block body and the display substrate can be easily and reliably sandwiched. Become.

Further, a flat display device according to a third aspect of the present invention has a first block body in which a cutout for exposing the end surface of the wiring cable is formed. According to the present invention, since the end portion, which is the connection portion of the distribution cable, can be seen from above, it is possible to detect the positional relationship between the display electrode and the display electrode, and perform accurate alignment. Can be.

According to a fourth aspect of the present invention, in the method for manufacturing a flat panel display device, a pair of display substrates bonded to each other so that a plurality of display electrodes are exposed at end portions, and an electric signal is sent to the display electrodes. In the step of electrically connecting the display substrate and the circuit substrate of the flat display device including a circuit substrate with a flexible cable, a first block body adhered to an end of the flexible cable is connected to the display substrate. After placing the flexible cable at the end with the flexible cable interposed, the second block having a substantially U-shape in cross section having an elastic force previously held slidably on the flexible cable is attached to the first block. The flexible cable is slid toward the body and fixed so as to sandwich the front surface of the first block body and the back surface of the display substrate. It is intended to be electrically connected to the display electrode of the display substrate.

According to the present invention, after the flexible cable is placed on the end portion of the display substrate with the flexible cable interposed therebetween, the second block body is slid along the flexible cable to be sandwiched. A simple method enables reliable connection of flexible cables. According to a fifth aspect of the present invention, in the method of manufacturing a flat display device, the first block body is mounted on the display substrate by a suction machine that suctions a surface of the first block body.

According to the present invention, the first block body can be automatically moved to a predetermined position by the suction machine without manual operation, and accurate and quick movement is enabled. . Further, in the method of manufacturing a flat display device according to claim 6 of the present invention, the suction device is operated based on a detection result of a camera that detects a positional relationship between the flexible cable and a display electrode of the display substrate. Things.

According to the present invention, since the positioning is performed while detecting the position of the flexible cable by the camera, the positioning can be performed with high accuracy.
A cable connecting connector according to claim 7 of the present invention is a cable connecting connector for electrically connecting a flexible cable to a substrate having a plurality of electrodes, wherein the end of the flexible cable is fixed and A first block body whose end is in contact with the substrate, and a second U-shaped member having an elastic force and having a substantially U-shape in cross-section when holding the first block body and the substrate in an overlapping state; It consists of a block body.

By using the connector of the present invention, the electrical connection between the substrate having the electrodes and the flexible cable can be easily performed without using a large-scale device and without a troublesome process. Becomes Further, the cable connector according to claim 8 of the present invention has a second block body having a slit for penetrating the flexible cable, and the second block is formed by penetrating the flexible cable through the slit.
Is slidably held by the flexible cable.

According to the present invention, since the first and second blocks are integrated via the flexible cable, the handling is facilitated and the second block is moved along the flexible cable. It is possible to easily and surely fix the first block body and the substrate by sliding. In a cable connector according to a ninth aspect of the present invention, the first block body has a cutout for exposing an end surface of the flexible cable.

According to the present invention, when the flexible cable is connected to the display substrate, the end, which is the connection portion of the flexible cable, can be confirmed from above, so that the positioning can be easily performed. It becomes possible.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2 are views showing characteristic portions of the flat panel display according to the embodiment of the present invention. FIG. 1 is a perspective view, and FIG. 2 is a sectional view. 1 and 2
As shown in FIG. 1, in the display device 1 of the present embodiment, the front substrate 2 serving as a display surface and the rear substrate 3 serving as a circuit board mounting surface are
A circuit board 8 is mounted on the back substrate 3 via a chassis 7 (omitted in FIG. 1). The front substrate 2 and the rear substrate 3 are glass substrates having a thickness of several mm.

As can be seen from FIG. 2, the front substrate 2 and the rear substrate 3 are bonded to each other with a very small gap. In this case, a discharge gas is sealed. Display electrodes are formed on the inner surfaces of the front substrate 2 and the rear substrate 3 so as to be orthogonal to each other, and the ends of the electrodes are led out to form electrode terminals 4. still,
In FIG. 1, only the electrode terminals 4 on the front substrate 2 are visible, and the electrode terminals on the rear substrate 3 are hidden behind the rear substrate and cannot be seen. Also, since FIG. 2 is a cross-sectional view of a connection portion on the front substrate 2 side, electrode terminals of the rear substrate 3 and connection portions of the electrode terminals are not shown.

The electrode terminals 4 and the circuit board 8 are electrically connected via a flexible cable 6, and the electrode terminals 4 are connected by an electrode connector 5 which is a feature of the present invention. . On the other hand, the circuit board 8 side includes a printed board 9 connected to the flexible connector 6 and a board connector 1 mounted on the circuit board 8 in this embodiment.
0 is connected by fitting.

As shown in the sectional view of FIG. 2, the electrode connector 5 according to the present embodiment is composed of two blocks, and the structure allows simple and accurate connection. The detailed structure of the electrode connector 5 will be described with reference to FIGS. 3A and 3B are views showing the electrode connector according to the present embodiment, wherein FIG. 3A is a perspective view and FIG. 3B is a cross-sectional view. FIG. 4 is an exploded perspective view of the electrode connector according to the present embodiment.

As shown in FIGS. 3 (a) and 3 (b), the electrode connector 5 has an adhesive block 11 for adhering the end of the flexible cable 6 to the lower surface, and a clamping block 12 for clamping the adhesive block 11 together with the substrate. It is composed of
The bonding block 11 has a substantially E shape having two notches 11a, and each of the engaging portions 11
and a guide rail 11c protruding upward near the center. As is clear from FIG. 3A, the distal end 6 a of the flexible cable 6 adhered to the lower surface is exposed in the notch 11 a of the adhesive block 11.

On the other hand, the holding block 12 has a claw-shaped engaging portion 12a corresponding to the engaging portion 11b of the adhesive block 11,
Notch portion 12b for separating engaging portion 12a, slit 12c for penetrating and holding flexible cable 6, and guide groove 12d corresponding to guide rail 11c of adhesive block 11.
It has. Notch 11 in adhesive block 11
a exposes the distal end portion 6a of the flexible cable 6 to enable alignment between the conductive wire and the electrode terminal of the substrate. The notch 12b of the holding block 12 is for releasing a holding means (an adsorber described later) of the bonding block 11 when holding the bonding block 11 and the substrate.

In this embodiment, as shown in FIG. 3B, an anisotropic conductive sheet 13 is previously attached to the lower surface of the flexible cable 6 adhered to the adhesive block 11. The anisotropic conductive sheet 13 is for electrically connecting the flexible cable 6 and the electrode terminals of the substrate, and as shown in FIG. 4, is made of a thin metal wire 13a and an insulating rubber 13b covering the thin wire 13a. Is added so that conductivity is obtained only in the thickness direction. That is, the thin metal wires 13a are composed of a plurality of thin wires extending in the thickness direction, and are arranged at intervals in the in-plane direction of the insulating rubber 13b so as to prevent short circuit.

The anisotropic conductive sheet 13 shown in FIG.
Is attached to the lower surface of the flexible cable 6 as indicated by an arrow. In addition, an adhesive block 11 is adhered to the upper surface of the flexible cable 6 corresponding to the attachment portion via an adhesive. Since the anisotropic conductive sheet 13 is a material that conducts only in the thickness direction as described above, there is no need for fine positioning with the flexible cable 6. Also,
The adhesive block 11 may also be simply fixed to the flexible cable 6, and positioning accuracy is not limited.

In FIG. 4, the holding block 12 is omitted. Next, a connection process of the flexible cable by the electrode connector will be described with reference to FIGS. FIGS. 5A and 5B are views for explaining a connection step according to the embodiment of the present invention, and are a cross-sectional view and a top view showing a state before connection. FIGS. 6A and 6B are views for explaining a connection process according to the embodiment of the present invention, and are a cross-sectional view and a top view showing a state after connection.

Front substrate 2 bonded and integrated
And an unfinished display device including a back substrate 3 and a circuit board (not shown) mounted on the back substrate 3 via a chassis,
5 (a) is placed on the stage indicated by oblique lines, and the connection of the flexible cable 6 is performed. As described with reference to FIG. 3, one flexible cable 6 is bonded to the bonding block 11 in advance and holds the holding block 12.

First, as shown in FIG. 5, the adhesive block 11 is sucked and held by the suction machine 19 and moved to a predetermined position on the front substrate 2. The suction device 19 is connected to a vacuum pump (not shown) to obtain a suction force. The suction device 19 contacts a suction pad at the tip near the center of the adhesive block 11 and holds the suction pad.
This suction position is clear from FIG. When moving the adhesive block 11, it is important to align the conductive wires 6b of the flexible cable 6 and the electrode terminals 4 of the front substrate 2, but the alignment is performed by the following method.

As shown in FIG. 5A, a camera 18 is installed above the electrode terminals 4 of the front substrate 2 and
And the position of the conductive wire 6b at the end of the flexible cable 6 exposed from the notch of the adhesive block 11 is detected by the camera 18, and the suction device 19 is moved so that the two overlap. That is, a control signal corresponding to the detection result of the camera 18 is transmitted to the drive source of the adsorber 19, and the adsorber 19 moves based on the control signal. By performing such control, the adhesive block 1 is placed in a state where the plurality of conductive wires 6b and the electrode terminals 4 all overlap.
1 is placed on the front substrate 2.

The mounting of the adhesive block 11 on the front substrate 2 is performed by fixing the adsorber 19 in a state where the adhesive block 11 is adsorbed when the adhesive block 11 is moved to a desired position.
It is also possible to attach an auxiliary adhesive tape to a region of the back surface of the flexible cable 6 different from the anisotropic conductive sheet 13. FIG. 5B shows a state in which the conductive wires 6b of the flexible cable 6 and the electrode terminals 4 of the front substrate 2 all overlap and are temporarily fixed. In FIG. 5B,
Although the number of conductive wires 6b of the flexible cable 6 and the corresponding electrode terminals 4 are several for convenience, at least several tens of them are formed with a short pitch in practice.

As can be seen from FIG. 5B, the conductive wires 6b of the flexible cable 6 and the electrode terminals 4 of the front substrate 2 are formed at the same pitch and the same number. By detecting the positions of the conductive wire 6b and the electrode terminal 4 and superposing them on each other, accurate positioning can be performed. The above alignment is based on the premise that the position of the conductive wire 6b of the flexible cable 6 can be detected. However, since the conductive wire 6b is covered with an insulating film, the use of an opaque insulating film allows the conductive wire 6b to be used. 6b may not be visible. In addition, even if it is transparent or translucent, it may be difficult for the camera 18 to detect it. Therefore, by providing a mark corresponding to the internal conductive line 6b on the surface of the insulating film in advance, it is possible to perform reliable detection.

By such means, the positioning is securely performed, and in the temporarily fixed state, the pressing machine 20 shown in FIG.
Is slid as indicated by the arrow, and the connection is completed by sandwiching the adhesive block 11 and the front substrate 2. Holding block 12
Is pressed by the press machine 20 and its upper part abuts on the adhesive block 11 to bend upward and slide toward the adhesive block 11. The portion of the holding block 12 that first comes into contact with the adhesive block 11 has an inclined shape so as to bend upward.

In the slide, the adhesive block 1
1 and the holding block 12 are guided by the guide rail 11c and the guide groove 12d (see FIG. 3), and do not shift in a direction perpendicular to the sliding direction. The guide action by the guide rail 11c and the guide groove 12d exerts its effect even after connection. Since the holding block 12 has an elastic force that tends to deform inward, that is, in a direction that presses the adhesive block 11 and the front substrate 2, the engaging portion 12 a is engaged with the engaging portion 11 b of the adhesive block. (See also FIG. 3), they are engaged with each other, which prevents the holding block 12 from coming off.

FIG. 6 shows the connection completed state. In this state, the adhesive block 11 and the front substrate 2 are firmly held by the holding force of the holding block 12. In addition, as described above, the holding block 12 has a function of preventing the holding block 12 from slipping out and shifting. As is clear from FIG. 6B, in the connected state, the suction device 19 suctions the adhesive block 11 at a position corresponding to the notch portion 12 b of the holding block 12.
It does not hinder the slide operation of.

After the conductive wires 6b of the flexible cable 6 and the electrode terminals 4 of the front substrate 2 are connected by the holding block 12 as shown in FIG. 6, the suction force of the suction device 19 is released, and the suction device 19 is released. And move it to a predetermined standby position. In the present embodiment, the suction block 19 is used to move the adhesive block 11, but other means may be used as long as the holding movement can be performed reliably.

As described above, the connection between the front substrate 2 and the flexible cable 6 is fixed, but the other end of the flexible cable 6, that is, the connection end with the circuit board 8 is
As shown in FIGS. 1 and 2, the printed circuit board 9 is previously connected to the printed circuit board 9 by means such as thermocompression bonding, and is fixed by fitting the printed circuit board 9 to a board connector 10 installed on a circuit board 8. I do.

The board connector 10 is a connector having a structure in which the edge of the printed board 9 from which the terminals are led can be directly connected. In the present embodiment, the front substrate 2
A description has been given of the connection between the cable and the flexible cable 6, but the basic connection structure of the rear substrate 3 is the same except that the direction in which the electrode terminals face is different. Therefore, when connecting the flexible cable to the back substrate, by making the substrate upside down, or by supporting the adhesive block from below by the suction machine,
A similar connection is possible.

According to this embodiment, a simple connection that does not require thermocompression bonding is possible, and the stress applied to a thin substrate is reduced. In addition, flexible cable 6
And the front (rear) substrate 2 are connected only by fitting a connector, so that the flexible cable 6 can be removed by forcibly removing the holding block 12 by applying an external force. Further, since the anisotropic conductive sheet 13 is merely sandwiched, the electrode terminals 4 of the substrate are not damaged when the sheet is peeled off.

Next, another embodiment according to the present invention will be described with reference to FIG. FIG. 7 is a view showing a connector according to another embodiment of the present invention. The flat display device is characterized by being thin, and the present embodiment realizes a connector structure that does not hinder the thinning of the display device. The feature is that the holding block 22 shown in FIG.
And a metal spring 24 which is thin and can obtain a sufficient clamping force. That is, as in the previous embodiment, the metal spring 24 is buried inside the resin body having the engagement portion 22a and the notch portion 22b to increase the holding force and reduce the thickness of the resin body.

Particularly, in the present embodiment, a structure is used in which the metal spring 24 is exposed without using a resin body at all in the portion that comes into contact with the substrate. Also, for the contact portion with the adhesive block 21, by forming the engaging portion and the like by bending,
It is also possible to further reduce the thickness without using a resin body. Note that the configuration other than the holding block 22 and the holding state are the same as those of the previous embodiment, and thus description thereof will be omitted.

The electrode connector according to the embodiment described above, as shown in FIG. 3 or FIG. 7, relates to bonding blocks 11 and 21 having two notches 11a and 21a and two engaging portions 11b and 21b. Although it was composed of the holding blocks 12 and 22 having the joining portions 12a and 22a and the notches 12b and 22b, the shape of the adhesive block and the holding block is not limited as long as they have similar functions. However, the present invention is not limited to this.

The holding blocks 12 and 22 have slits 12 c and 22 through which the flexible cable 6 passes.
Although c is formed, the structure is not limited to this as long as a structure for releasing the flexible cable 6 is provided.

[0048]

According to the flat display device and the method of manufacturing the same, and the connector for cable connection of the present invention described above, a large-scale device such as connection by thermocompression bonding can be used without any need for complicated control. The connection between the cable and the display electrode of the display substrate can be easily and reliably performed by fitting the connector.

Also, by removing the connector,
Since the connection state can be easily released without damaging the display electrode, inspection or repair at the time of display abnormality or the like can be easily performed. Further, since stress applied to a thin substrate made of glass or the like at the time of connection can be suppressed, damage to the substrate can also be prevented. In addition, even in the case of having a display electrode with a minute pitch, the position can be adjusted while detecting the position of the flexible cable and the substrate, so that the occurrence of a defect due to a position shift can be suppressed.

[Brief description of the drawings]

FIG. 1 is a partial perspective view of a display device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of the display device according to the embodiment of the present invention.

FIG. 3 is a diagram showing a connector according to an embodiment of the present invention.

FIG. 4 is an exploded perspective view of the connector according to the embodiment of the present invention.

FIG. 5 is a diagram (1) showing a connection step according to the embodiment of the present invention.

FIG. 6 is a view (2) showing a connection step according to the embodiment of the present invention.

FIG. 7 is a view showing a connector according to another embodiment of the present invention.

FIG. 8 is a perspective view of a display device according to the related art.

FIG. 9 is a view showing a connection step according to the conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Front board 3 Back board 4 Electrode terminal 5,15 Electrode connector 6,16 Flexible cable 7 Chassis 8 Circuit board 9 Printed board 10 Board connector 11,21 Adhesion block 12,22 Holding block 13,23 Anisotropic Conductive sheet 18 Camera 19 Suction machine 20 Press machine 24 Metal spring

Claims (9)

[Claims] 1. An electrode, comprising: a display panel in which a plurality of display electrodes are arranged on inner surfaces of a pair of substrates facing each other; and a circuit board for sending an electric signal to the display electrodes. In a flat panel display device in which a terminal group and a circuit board are electrically connected by a wiring cable, a first block body that supports an end of the wiring cable and presses the end against an electrode terminal group on the substrate The first terminal block and the electrode terminal group and the wiring cable, each of which is a substantially U-shaped block having a resilient force and electrically connected by pressing the first block. A flat display device comprising: a second block body for holding and fixing a substrate. 2. The flat display device according to claim 1, wherein the second block body has a slit for penetrating the wiring cable, and is slidable with respect to the wiring cable by the slit. 3. The flat display device according to claim 1, wherein a cutout for exposing an end surface of the wiring cable is formed in the first block body. 4. A flat display device comprising: a pair of display substrates bonded to each other so that a plurality of display electrodes are exposed at ends; and a circuit substrate that sends an electric signal to the display electrodes. In the step of electrically connecting the circuit board with the flexible cable, the first block body adhered to the end of the flexible cable is placed on the end of the display substrate with the flexible cable interposed therebetween. Thereafter, a second block body having a substantially U-shape in cross section and having an elastic force previously held slidably by the flexible cable is connected to the first block.
The flexible cable is electrically connected to the display electrode of the display substrate by sliding toward the block body and fixing the front surface of the first block body and the back surface of the display substrate so as to sandwich it. A method for manufacturing a flat panel display device, comprising: 5. The method for manufacturing a flat display device according to claim 4, wherein the first block body is mounted on the display substrate by a suction machine that suctions a surface of the first block body. 6. The flat display device according to claim 5, wherein the suction device operates based on a detection result of a camera that detects a positional relationship between the flexible cable and a display electrode of the display substrate. Production method. 7. A cable connector for electrically connecting a flexible cable to a substrate having a plurality of electrodes, wherein a connector for fixing an end of the flexible cable and contacting the end with the substrate. For connecting a cable, comprising: a first block body; and a substantially U-shaped section having elasticity and having a substantially U-shape in cross section, the second block body sandwiching the first block body and the board in a state where the first block body and the substrate are stacked. connector. 8. The cable connector according to claim 7, wherein the second block body has a slit through which the flexible cable penetrates, and is slidably held by the flexible cable by the slit. . 9. The cable connection connector according to claim 7, wherein a cutout for exposing the end surface of the flexible cable is formed in the first block body.