JP2002196354A - Connection structure of panel heater for liquid crystal display panel and connector cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the connection structure of a panel heater for liquid crystal display panel and a connector cable, capable of maintaining surely a constant function for a long term. SOLUTION: When a panel heater for liquid crystal display panel 1 and a connector cable 2 for supplying electric power to the heater 1 are electrically connected with a flexible wiring board 3, the clamping part 13 of a clip 12 is fitted to the panel heater 1 for liquid crystal display panel 1 and also a wiring board-side electrode 7 of the flexible wiring board 3 and the output lead 2a of the connector cable 2 are electrically connected with the clip 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection structure between a panel heater for a liquid crystal display panel and a connector cable, and more particularly, to a panel heater for a liquid crystal display panel capable of reliably maintaining a stable function for a long period of time. The connection structure between the cable and the connector cable.

[0002]

2. Description of the Related Art In general, as a kind of liquid crystal display device, a configuration in which a panel heater for a liquid crystal display panel is mounted outside a liquid crystal display panel is known.

In such a panel heater for a liquid crystal display panel, a connector cable for supplying electric power from a power supply is electrically connected via a flexible wiring substrate having flexibility, so that the liquid crystal display panel is heated. External power is supplied to the transparent heating layer provided in the panel heater to generate heat in the transparent heating layer.

FIGS. 12 and 13 show a main part of a conventional connection structure between a panel heater for a liquid crystal display panel and a connector cable. The panel heater 1 for a liquid crystal display panel and the connector cable 2 are flexible. They are electrically connected via the wiring board 3.

More specifically, the panel heater 1 for a liquid crystal display panel has a transparent substrate 4 made of transparent glass or the like and formed in a substantially rectangular plane. On one surface of the transparent substrate 4, indium tin oxide (IT)
O) and the like, and a transparent heat generating layer 5 formed of a transparent conductive film such as O) is laminated.
, Two panel electrodes 5 used to supply electric power to the transparent heat generating layer 5
a is provided. The panel heater 1 for a liquid crystal display panel is formed to have a size of, for example, about 116 mm in length, 255.8 mm in width, and about 1.1 mm in thickness.

The flexible wiring board 3 has a wiring board side electrode 7 formed of a metal thin film such as a copper foil on one surface of a base film 6 made of a flexible insulating film such as a polyimide resin. Thereby, it is formed in a band shape as a whole. The length of the flexible wiring substrate 3 is longer than the length of the panel electrode 5a of the panel heater 1 for the liquid crystal display panel in the longitudinal direction.

The panel electrode 5a of the liquid crystal display panel heater 1 and the wiring board-side electrode 7 of the flexible wiring board 3 are fixed so as to be electrically connected via an anisotropic conductive film (not shown). ing. FIG. 12 of the flexible wiring board 3
13, one end shown on the right side is provided so as to protrude from the edge of the transparent substrate 4, and the protruding portion forms the wiring board protruding portion 8. As shown in FIG. 12, a soldering portion formed by soldering the wiring board-side electrode 7a and the output lead 2a of the connector cable 2 to the wiring board-side electrode 7a located at the wiring board protruding portion 8. 9 are provided, and the wiring board side electrode 7a and the output lead 2a are electrically connected.

[0008]

However, in the above-described conventional connection structure between the panel heater 1 for a liquid crystal display panel and the connector cable 2, the wiring board side located at the wiring board protruding portion 8 of the flexible wiring board 3 is required. Since the output lead 2a of the connector cable 2 is directly soldered to the electrode 7a, the connector cable 2 may be bent by an external force such as hand bending or vibration when assembling the liquid crystal display device.
Is directly transmitted to the soldering part 9 between the wiring board side electrode 7a and the output lead 2a, and a crack is generated on the surface of the wiring board side electrode 7a near the soldering part 9, and thereafter, the wiring board is cracked at the crack generating part. There was a problem that the side electrode 7a was broken and peeled off from the base film 6, resulting in disconnection.

The disconnection of the wiring board side electrode 7a is caused by the fact that the soldering portion 9 is composed of the wiring board side electrode 7a which is thin and flexible and the solder which is harder than that.
As shown in FIG. 14A, there is no problem in the initial state in which the soldering portion 9 is provided on the wiring board side electrode 7a of the flexible wiring board 3, but the connector cable 2 moves and the flexible wiring board is moved. When the wire 3 is deformed, the soldering portion 9 of the flexible wiring board 3 is not deformed as shown in FIG.
A fulcrum BP of the flexible wiring board 3 is formed at an end of the soldering portion 9, and the flexible wiring board 3 is bent at the fulcrum BP. When the flexible wiring board 3 is repeatedly deformed,
The force concentrates on the fulcrum BP every time it is deformed.
(C), the surface of the wiring board side electrode 7a located at the fulcrum BP when the flexible wiring board 3 is deformed has a crack C
This crack C progresses every time the flexible wiring board 3 is deformed. When the crack C reaches the base film 6 as shown in FIG. 14D, the wiring board-side electrode 7a breaks. To peel off from the base film 6 to break the wire.

Therefore, the connection structure between the panel heater for the liquid crystal display panel and the connector cable, which can prevent the wiring board side electrode of the flexible wiring board from being disconnected, that is, to reliably maintain a stable function for a long period of time. There is a need for a connection structure between a panel heater for a liquid crystal display panel and a connector cable that can be used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object to provide a connection structure between a panel heater for a liquid crystal display panel and a connector cable, which can reliably maintain a stable function for a long period of time. It is an object.

[0012]

According to a first aspect of the present invention, there is provided a connection structure between a panel heater for a liquid crystal display panel and a connector cable according to the first aspect of the present invention. A panel heater for a liquid crystal display panel having a heating layer and panel electrodes provided on two opposite sides of the transparent heating layer, and a wiring board side electrode electrically connected to the panel electrode of the panel heater for the liquid crystal display panel. A flexible wiring board, a clip formed of a conductive material and having a holding portion capable of holding the liquid crystal display panel panel heater in the thickness direction, and a connector for supplying power to the liquid crystal display panel panel heater And a clip holding portion attached to the panel heater for the liquid crystal display panel, and a front end of the flexible wiring board and the wiring board side electrode. Lies in that the output lead of the connector cable is electrically connected through the clip.

[0013] Further, the connection structure between the panel heater for the liquid crystal display panel and the connector cable according to the second aspect of the present invention is characterized in that, in the first aspect, the flexible wiring board and the clip are connected to the wiring board side. The point is that the electrodes are connected at the electrode exposed portions exposed upward.

According to a third aspect of the present invention, the connection structure between the panel heater for the liquid crystal display panel and the connector cable is characterized in that, in the second aspect, the electrode exposing portion bends one end of the flexible wiring board. The point is that it is formed.

According to a fourth aspect of the present invention, the connection structure between the panel heater for a liquid crystal display panel and a connector cable according to the present invention is characterized in that, in the second aspect, the electrode exposed portions are formed on both sides of a flexible base film. This is one of the formed wiring board-side electrodes, and is characterized in that the electrodes on both surfaces are electrically connected through through holes.

By adopting such a configuration, since the output lead of the connector cable is connected to the clip, the movement of the connector cable can be prevented from being directly transmitted to the flexible wiring board. Can prevent the wiring board side electrode of the flexible wiring board from being deformed and disconnected. Therefore, a stable function can be reliably maintained for a long period of time.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIGS. 1 to 3 show a main part of a first embodiment of a connection structure between a panel heater for a liquid crystal display panel and a connector cable according to the present invention. FIG.
FIG. 2 is a right side view, and FIG. 3 is a plan view.

As shown in FIGS. 1 to 3, a connection structure (hereinafter simply referred to as a connection structure) 21 between a panel heater for a liquid crystal display panel and a connector cable according to the present embodiment is a panel heater for a liquid crystal display panel (hereinafter, simply referred to as a connection structure). , A panel heater), a connector cable 2, a flexible wiring board 3 having flexibility, and a clip 12.

The panel heater 1 has a transparent substrate 4 made of transparent glass or the like and having a substantially rectangular shape in a plane as in the prior art. On one surface of the transparent substrate 4, a transparent heat generating layer 5 formed of a transparent conductive film such as indium tin oxide (ITO) is laminated and formed. The panel electrodes (only one is shown) 5a used to supply power to the transparent heat generating layer 5 are respectively provided on two opposite sides located at
Is provided. The panel heater 1 is formed to have a size of, for example, about 116 mm in length, 255.8 mm in width, and about 1.1 mm in thickness.

The flexible wiring board 3 is made of a wiring board formed of a metal thin film such as a copper foil on one surface of a base film 6 made of a flexible insulating film such as a polyimide resin, as in the prior art. By providing the side electrode 7,
It is formed in a band shape as a whole. The length of the flexible wiring board 3 is longer than the length of the panel electrode 5a of the panel heater 1 in the longitudinal direction.

A panel electrode 5a of the panel heater 1;
The wiring board side electrode 7 of the flexible wiring board 3 is fixed so as to be electrically connected to the wiring board side electrode 7 via an anisotropic conductive film (not shown) as in the related art. 1 and 3, the right end of the flexible wiring board 3 is provided so as to protrude from the edge of the transparent substrate 4, and the protruding portion causes the wiring board protruding portion 8 to protrude. Is formed.

A clip 12 is mounted in the vicinity of the wiring board projecting portion 8 of the flexible wiring board 3 in the fixing portion between the panel heater 1 and the flexible wiring board 3. This clip 1
Reference numeral 2 denotes a plate made of a conductive material, in this embodiment, phosphor bronze for spring (C5210: JIS H3130) and having a thickness of 0.2 mm, which is formed by processing such as cutting and bending. . In addition, as a conductive material,
A material that can have good conductivity and elasticity required to sandwich the panel heater 1 such as iron, copper, and platinum may be used.

The clip 12 has a holding portion 13 which can hold the panel heater 1 in the thickness direction. The holding portion 13 includes a plate-shaped substrate body 14, a plate-shaped holding piece 15 extending in parallel above the substrate body 14, and a board body 14.
A flat plate-shaped connecting plate 16 connecting one end of each of the holding pieces 15 in the plate thickness direction has a U-shaped cross section as a whole. Then, the substrate body 14 of the clip 12
1 resiliently contacts the back surface shown in the lower part of FIG. 1 where the panel electrode 5a of the panel heater 1 is not formed, and the holding piece 15 is the flexible wiring board in which the surface shown in the upper part of FIG. 3 to be in contact with it. Therefore, the distance between the free end of the substrate body 14 and the free end of the holding piece 15 is formed smaller than the thickness of the transparent substrate 4.

The length of the holding piece 15 in the left-right direction of FIG. 1 is formed shorter than the length of the board body 14 in the left-right direction of FIG. 1, and the left end of the holding piece 15 is located above the left end of the board body 14. By positioning, the right end of the substrate body 14 is
Is formed so as to protrude from the right end. As shown in FIGS. 1 and 3, the right end of the substrate body 14 projects outward from the right end of the panel heater 1.
At the right end of 4, a substantially flat wiring board connecting portion 17 is formed.

As shown in FIG. 1, the wiring board connecting portion 17 is formed to extend downward from the right edge of the board body 14 so as to be orthogonal to the thickness direction. Further, between the base end and the front end of the wiring board connection part 17, a horizontally long wiring board insertion opening 18 penetrating in the thickness direction having an opening on one side shown in the left side of FIG. 2 is formed. The wiring board projecting portion 8 of the flexible wiring board 3 is inserted into the wiring board insertion opening 18. Then, with the wiring board projecting portion 8 of the flexible wiring board 3 inserted through the wiring board insertion opening 18, the wiring board side electrode 7 a located at the wiring board projecting section 8 and the wiring board connecting section 17 are soldered. A first soldering portion 19 (FIG. 1) is formed.

Further, a flat cable connecting portion 20 is formed at the other end of the wiring board connecting portion 17 shown on the right side of FIG. 2 so as to extend therefrom. The output lead 2a is soldered to form a second soldered portion 21 (FIGS. 2 and 3).

That is, both the wiring board connecting portion 17 and the cable connecting portion 20 are formed to extend from the holding portion 13 of the clip 12, respectively.

Therefore, the connection structure 11 of the present embodiment
Attaches the holding portion 13 of the clip 12 to the panel heater 1 and connects the wiring board side electrode 7 of the flexible wiring board 3 and the output lead 2 a of the connector cable 2 to the clip 12.
It is configured to be electrically connected via a.

More specifically, in the connection structure 11 of the present embodiment, the clip 12 is connected to the wiring board connection portion 17 used for connection with the wiring board side electrode 7 of the flexible circuit 3 and the output lead 2a of the connector cable 2. Of the flexible wiring board 3 is formed to be longer than the length of the panel electrode 5a, and the panel electrode 5a and the wiring board side electrode 7 are electrically connected to each other. The flexible wiring board 3 is fixed so as to be connected, and one end of the flexible wiring board 3 is protruded from the end face of the transparent substrate 4 to provide a wiring board protrusion 8. The configuration is such that the wiring board connection portion 17 is soldered and the output lead 2 a of the connector cable 2 is electrically connected to the cable connection portion 20 of the clip 12.

As a configuration for electrically connecting the clip 12 and the flexible wiring board 3, for example, a mechanical connection such as "fitting" using a conductive material shown in FIG. The configuration may be a simple fastening, and is not limited to the soldering of the present embodiment.

As a configuration for electrically connecting the clip 12 and the output lead 2a of the connector cable 2, for example, the wiring board connecting portion 17 shown in FIG. 5 may be configured by crimping such as "caulking". The present invention is not limited to the soldering of this embodiment.

Further, in the present embodiment, as shown in FIG. 1, the base end of the wiring board side electrode 7a located at the wiring board projection 8 of the flexible wiring board 3 and adjacent to this base end. The boundary with the end face of the panel heater 1 is covered with an elastic member 22 made of a silicone sealant or the like, so that the wiring board-side electrode 7a can be prevented from being broken at the end face position of the panel heater 1. It has become. The coating by the elastic member 22 may be provided as necessary according to a design concept or the like.

Next, the operation of the present embodiment having the above-described configuration will be described.

As shown in FIG. 1, according to the connection structure 11 of this embodiment, both the wiring board side electrode 7 of the flexible wiring board 3 and the output lead 2 a of the connector cable 2 are indirectly connected via the clip 12. Electrically connected. That is, since the output lead 2 a of the connector cable 2 is connected to the rigid clip 12, the movement of the connector cable 2 can be prevented from being directly transmitted to the flexible wiring board 3. It is possible to prevent the wiring board side electrode 7 of the board 3 from being deformed and disconnected. Therefore, according to the connection structure 11 of the present embodiment, a stable function can be reliably maintained for a long period of time.

This means that the panel heater 1 using the connection structure 11 of the present embodiment was used as a sample and had a frequency of 10 to 55.
Hz, amplitude 1.52 mm PP, 2 each in X, Y, Z directions
As a result of conducting a vibration test under the condition of time (total 6 hours),
In all of the ten samples, the wiring board side electrode 7
No disconnection was observed.

When a vibration test was conducted on the panel heater using the conventional connection structure under the same conditions, disconnection of the wiring board side electrode occurred in all of the ten samples.

FIGS. 6 to 8 show a second embodiment of a connection structure between a panel heater for a liquid crystal display panel and a connector cable according to the present invention.

The connection structure 11A of this embodiment improves the workability of soldering the wiring board side electrode and the clip.

That is, as shown in FIG. 6 to FIG. 8, the wiring board side electrode 7a and the wiring board side electrode 7a are provided at the central portion of the holding piece 15 which constitutes a part of the holding portion 13A of the clip 12A in the connection structure 11A of this embodiment. A through hole 23 penetrating in the plate thickness direction for use in the electrical connection is formed, and the holding piece 15 itself has a function of the wiring board connecting portion 17A. In addition, the flexible wiring substrate 3 includes a transparent substrate 4.
The wiring board-side electrode 7 a forms an electrode exposed portion 9 that is exposed above the surface of the transparent substrate 4. The holding piece 15 of the clip 12A is in elastic contact with the wiring board side electrode 7a of the electrode exposed portion 9. Further, the wiring board side electrode 7a of the electrode exposed portion 9 and the holding piece 15 of the clip 12A are soldered by solder provided inside the through hole 23 to form a first soldered portion 19A. The right end of the substrate 14 of the clip 12A projects outward from the right end of the panel heater 1.
A flat cable connecting portion 20A extending downward and perpendicular to the thickness direction so as to be separated from the arrangement direction of the holding pieces 15 is formed at the right end of the cable connecting portion 20A. The output lead 2a of the connector cable 2 is soldered to the cable connection portion 20A to form a second soldering portion 21A.

Therefore, the connection structure 11A of the present embodiment
Also, the clip 12A connects the wiring board side electrode 7 of the flexible wiring board 3 and the output lead 2a of the connector cable 2 to each other.
It can be electrically connected via a.

The other configuration is the same as the connection structure 11 of the first embodiment described above, and a detailed description thereof will be omitted.

The connection structure 1 of the present embodiment having such a configuration is described.
According to 1A, the same effect as that of the connection structure 11 of the above-described first embodiment can be obtained, and the workability of the soldering operation of the first soldering portion 19A can be easily improved.

FIGS. 9 to 11 show a third embodiment of a connection structure between a panel heater for a liquid crystal display panel and a connector cable according to the present invention.

The connection structure 11B of the present embodiment is another example in which the workability of soldering the wiring board side electrode and the clip is improved.

That is, as shown in FIGS. 9 to 11,
Flexible wiring board 3B in connection structure 11B of the present embodiment
Has a wiring board side electrode 7B provided on both sides of a base film 6 formed of a flexible insulating film. These wiring board side electrodes 7B are electrically connected using through holes 24. Further, one of the wiring board-side electrodes 7B excluding the portion where the through hole 24 is formed
Is covered with a cover film 25 formed of a flexible insulating film. Also,
The length of the flexible wiring substrate 3 is equal to or slightly shorter than the length of the panel electrode 5a. The panel heater 1 and the flexible wiring board 3B are connected to the panel electrode 5a of the panel heater 1 by connecting the wiring board side electrode 7B, which is not covered by the cover film 25 of the flexible wiring board 3B, with an anisotropic conductive material (not shown). It is fixed by electrical connection using a film. Also, the cover film 2 of the flexible wiring board 3B
Through hole 24 of wiring board side electrode 7B located on the 5th side
Is formed in the electrode exposed portion 9 exposed above the surface of the transparent substrate 4.

In the center of the holding piece 15 which constitutes a part of the holding portion 13B of the clip 12B of the present embodiment,
Clip 12 of connection structure 11A of the second embodiment described above
Similarly to A, a through hole 23 penetrating in the plate thickness direction for use in electrical connection with the wiring board side electrode 7a is formed, and the holding piece 15 itself has the function of the wiring board connecting portion 17B. It has been. Then, the wiring board side electrode 7 </ b> B located at the portion of the electrode exposed portion 9 where the through hole 24 is formed
, The holding piece 15 of the clip 12B is elastically contacted. Furthermore, the through-hole 24 and the holding piece 15 of the clip 12B are provided.
And the through holes 23 are soldered by the solders disposed therein to form the first soldered portions 19B. Further, the right end of the substrate body 14 of the clip 12B projects outward from the right end of the panel heater 1, and
A flat cable connecting portion 20B is formed at the right end of the substrate body 14 so as to extend downward and perpendicular to the thickness direction so as to be separated from the arrangement direction of the holding pieces 15. . The output lead 2a of the connector cable 2 is soldered to the cable connection portion 20B to form a second soldering portion 21B.

Accordingly, the connection structure 11B of the present embodiment
Also, the clip 1 connects the wiring board side electrode 7B of the flexible wiring board 3B and the output lead 2a of the connector cable 2 to each other.
It can be electrically connected via 2B.

The other configuration is the same as the connection structure 11A of the second embodiment described above, and a detailed description thereof will be omitted.

The connection structure 1 of the present embodiment having such a configuration is as follows.
According to 1B, the connection structure 11A of the second embodiment described above is used.
Similarly to the above, the same effects as those of the connection structure 11 of the above-described first embodiment can be obtained, and the workability of the soldering operation of the first soldering portion 19B can be easily improved.

The present invention is not limited to the above embodiments, but can be variously modified as needed.

[0052]

As described above, according to the connection structure of the panel heater for the liquid crystal display panel and the connector cable of the present invention, since the output lead of the connector cable is connected to the clip, the movement of the connector cable is flexible. Since direct transmission to the wiring board can be prevented, there is an extremely excellent effect that the wiring board side electrode of the flexible wiring board can be prevented from being deformed and disconnected due to the movement of the connector cable. Therefore, according to the connection structure between the panel heater for a liquid crystal display panel and the connector cable of the present invention, an extremely excellent effect is obtained such that a stable function can be reliably maintained for a long period of time.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of a first embodiment of a connection structure between a panel heater for a liquid crystal display panel and a connector cable according to the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a view similar to FIG. 2, showing another example of a configuration for electrically connecting the clip of FIG. 1 and a flexible wiring board;

FIG. 5 is a view similar to FIG. 2, showing another example of a configuration for electrically connecting the clip of FIG. 1 to a flexible wiring board;

FIG. 6 is a front view showing a main part of a second embodiment of a connection structure between a panel heater for a liquid crystal display panel and a connector cable according to the present invention.

FIG. 7 is a right side view of FIG.

FIG. 8 is a plan view of FIG. 6;

FIG. 9 is a front view showing a main part of a third embodiment of a connection structure between a panel heater for a liquid crystal display panel and a connector cable according to the present invention.

FIG. 10 is a right side view of FIG. 9;

FIG. 11 is a plan view of FIG. 9;

FIG. 12 is a front view showing a connection structure between a conventional panel heater for a liquid crystal display panel and a connector cable.

FIG. 13 is a plan view of FIG.

14 shows an initial state (a), a deformed state (b), a state in which a crack has occurred in the wiring board side electrode (c), and the crack reached the base film in FIG. Enlarged front view showing each state (d)

[Explanation of symbols]

Reference Signs List 1 Panel heater for liquid crystal display panel 2 Connector cable 2a Output lead 3, 3B Flexible wiring board 4 Transparent substrate 5 Transparent heating layer 5a Panel electrode 6 Base film 7, 7a 7B Wiring board side electrode 8 Wiring board protrusion 9 Electrode exposed part DESCRIPTION OF SYMBOLS 11 Connection structure (of panel heater for liquid crystal display panel and connector cable) 12, 12A, 12B Clip 13, 13A, 13B Clamping part 14 Substrate body 15 Clamping piece 16 Connecting plate 17, 17A, 17B Wiring board connector 18 Flexible insertion port 19, 19A, 19B First soldering part 20, 20A, 20B Cable connecting part 21, 21A, 21B Second soldering part 23 Through hole 24 Through hole 25 Cover film

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] December 27, 2000 (200.12.
27)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

The panel electrode 5a of the liquid crystal display panel heater 1 and the wiring board-side electrode 7 of the flexible wiring board 3 are fixed so as to be electrically connected via an anisotropic conductive film (not shown). ing. FIG. 12 of the flexible wiring board 3
13, one end shown on the right side is provided so as to protrude from the edge of the transparent substrate 4, and the protruding portion forms the wiring board protruding portion 8. The wiring substrate-side electrode 7a located wiring board protruding portion 8, as shown in FIG. 12, by the output leads 2a of the wiring substrate side electrode 7a and connectors <br/> te cable 2 is soldered The formed soldering portion 9 is provided,
The wiring board side electrode 7a and the output lead 2a are electrically connected.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008]

However, in the above-described conventional connection structure between the panel heater 1 for a liquid crystal display panel and the connector cable 2, the wiring board side located at the wiring board protruding portion 8 of the flexible wiring board 3 is required. because it is directly soldered constitutes the output leads 2a of the connector cable 2 to the electrode 7a, in assembling a liquid crystal display device hand bend, the connector cable <br/> le 2 due to external forces such as vibration The movement is directly transmitted to the soldering portion 9 between the wiring board-side electrode 7a and the output lead 2a, and a crack is generated on the surface of the wiring board-side electrode 7a near the soldering portion 9, and thereafter, the crack is generated at the wiring board side The electrode 7a is broken and the base film 6
There was a problem that it was peeled off from the wire, resulting in disconnection.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

The disconnection of the wiring board side electrode 7a is caused by the fact that the soldering portion 9 is composed of the wiring board side electrode 7a which is thin and flexible and the solder which is harder than that.
As shown in (a) of FIG. 14, but not any problem in the initial state in which a soldered portion 9 on the wiring substrate side electrode 7a of the flexible wiring board 3, the connector cable 2 moving flexible wiring When the substrate 3 is deformed, as shown in FIG. 14B, the soldered portion 9 of the flexible wiring board 3 is not deformed but deformed at the end of the soldered portion 9. The fulcrum BP occurs, and the flexible wiring board 3 bends at the fulcrum BP. When the flexible wiring board 3 is repeatedly deformed, the force concentrates on the fulcrum BP every time the flexible wiring board 3 is deformed. As a result, as shown in FIG. A crack C is formed on the surface of the wiring board side electrode 7a located at the position C. The crack C progresses every time the flexible wiring board 3 is deformed, and as shown in FIG.
Reaches the base film 6, the wiring board side electrode 7a
Is broken and peeled from the base film 6 to break the wire.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

[0016] By employing the like of these configurations, since the output lead of the connector cable is connected to the clip, because the movement of the connector cable can be prevented from being transmitted directly to the flexible wiring board, wiring substrate-side electrode of the flexible wiring board by the movement of the connector <br/> cable can be prevented from being broken and deformed. Therefore, a stable function can be reliably maintained for a long period of time.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

As shown in FIGS. 1 to 3, a connection structure (hereinafter simply referred to as a connection structure) 21 between a panel heater for a liquid crystal display panel and a connector cable according to the present embodiment is a panel heater for a liquid crystal display panel (hereinafter, simply referred to as a connection structure). , simply referred to as a panel heater) 1, a connector cable 2, the flexible wiring board 3 having flexibility is constituted by a clip 12.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0027

[Correction method] Change

[Correction contents]

Further, a flat cable connecting portion 20 is formed at the other end of the wiring board connecting portion 17 shown on the right side of FIG. 2 so as to extend therefrom.
The output leads 2a of over cable 2 is soldered 2
Solder portions 21 (FIGS. 2 and 3) are formed.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0030

[Correction method] Change

[Correction contents]

[0030] To further illustrate, the connection structure 11 of this embodiment, the clip 12, the wiring board connecting portion 17 and the <br/> connector cable 2 used for connection with the wiring substrate side electrode 7 of the flexible circuit 3 outputs A cable connecting portion 20 used for connection with the lead 2a is formed so as to extend from the holding portion 13, and the length of the flexible wiring board 3 is formed to be longer than the length of the panel electrode 5a. Are fixed so as to be electrically connected to each other, and one end of the flexible wiring board 3 is protruded from the end face of the transparent substrate 4 to provide a wiring board protruding portion 8. A wiring board side electrode located on the wiring board protruding portion 8 is provided. 7a and the wiring board connection portion 17 of the clip 12 are soldered, and the output lead 2a of the connector cable 2 is electrically connected to the cable connection portion 20 of the clip 12. That.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

As shown in FIG. 1, according to the connection structure 11 of this embodiment, both the wiring board side electrode 7 of the flexible wiring board 3 and the output lead 2 a of the connector cable 2 are indirectly connected via the clip 12. Electrically connected. That is, since the output leads 2a of the connector cable 2 is connected to the clip 12 of the rigid connector cable 2
Since the movement of the can be prevented from being directly transmitted to the flexible wiring board 3, the wiring board-side electrode 7 of the flexible wiring board 3 by the movement of the connector cable 2 can be prevented from being broken and deformed. Therefore, the connection structure 11 of the present embodiment
According to this, a stable function can be reliably maintained for a long period of time.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction contents]

That is, as shown in FIG. 6 to FIG. 8, the wiring board side electrode 7a and the wiring board side electrode 7a are provided at the central portion of the holding piece 15 which forms a part of the holding portion 13A of the clip 12A in the connection structure 11A of this embodiment. A through hole 23 penetrating in the plate thickness direction for use in the electrical connection is formed, and the holding piece 15 itself has a function of the wiring board connecting portion 17A. In addition, the flexible wiring substrate 3 includes a transparent substrate 4.
The wiring board-side electrode 7 a forms an electrode exposed portion 9 that is exposed above the surface of the transparent substrate 4. The holding piece 15 of the clip 12A is in elastic contact with the wiring board side electrode 7a of the electrode exposed portion 9. Further, the wiring board side electrode 7a of the electrode exposed portion 9 and the holding piece 15 of the clip 12A are soldered by solder provided inside the through hole 23 to form a first soldered portion 19A. The right end of the substrate 14 of the clip 12A projects outward from the right end of the panel heater 1.
A flat cable connecting portion 20A extending downward and perpendicular to the thickness direction so as to be separated from the arrangement direction of the holding pieces 15 is formed at the right end of the cable connecting portion 20A. The cable connection portion 20A, the second soldering portion 21A output leads 2a of the connector cable 2 is soldered
Are formed.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction contents]

In the center of the holding piece 15 which constitutes a part of the holding portion 13B of the clip 12B of the present embodiment,
Clip 12 of connection structure 11A of the second embodiment described above
Similarly to A, a through hole 23 penetrating in the plate thickness direction for use in electrical connection with the wiring board side electrode 7a is formed, and the holding piece 15 itself has the function of the wiring board connecting portion 17B. It has been. Then, the wiring board side electrode 7 </ b> B located at the portion of the electrode exposed portion 9 where the through hole 24 is formed
, The holding piece 15 of the clip 12B is elastically contacted. Furthermore, the through-hole 24 and the holding piece 15 of the clip 12B are provided.
And the through holes 23 are soldered by the solders disposed therein to form the first soldered portions 19B. Further, the right end of the substrate body 14 of the clip 12B projects outward from the right end of the panel heater 1, and
A flat cable connecting portion 20B is formed at the right end of the substrate body 14 so as to extend downward and perpendicular to the thickness direction so as to be separated from the arrangement direction of the holding pieces 15. . This cable connection portion 20B, the second soldering portion 21B output leads 2a of the connector Ke <br/> Buru 2 is soldered is formed.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0052

[Correction method] Change

[Correction contents]

[0052]

According to the connection structure of the liquid crystal display panel for panel heaters and connector cables of the present invention as has been described above, since the output lead of the connector cable is connected to the clip, the movement of the connector cable since it is possible to prevent the directly transmitted to the flexible wiring board, very good, such as may be the wiring substrate-side electrode of the flexible wiring board by the movement of the connector <br/> cable is prevented from being broken by being deformed It has the effect. Therefore, according to the connection structure between the panel heater for a liquid crystal display panel and the connector cable of the present invention, an extremely excellent effect is obtained such that a stable function can be reliably maintained for a long period of time.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H05K 1/14 H05K 1/14 C F term (Reference) 2H088 EA68 FA29 HA05 MA20 2H092 GA50 GA63 HA04 HA20 MA34 NA15 5E344 AA02 AA12 AA22 AA26 AA28 BB02 BB03 BB04 BB05 CD12 CD15 CD29 CD38 DD08 DD09 EE17 5G435 AA07 AA12 AA16 BB12 EE33 EE41 EE43 EE44 EE47

Claims (4)

[Claims] 1. A panel heater for a liquid crystal display panel having a transparent heating layer provided on one surface of a transparent substrate, and panel electrodes provided on two opposite sides of the transparent heating layer, and a panel heater for the liquid crystal display panel. A flexible wiring board having a wiring board side electrode electrically connected to the panel electrode, and a clip formed of a conductive material and having a holding portion capable of holding the liquid crystal display panel panel heater in a thickness direction, A connector cable for supplying power to the panel heater for the liquid crystal display panel, wherein the clip holding portion is mounted on the panel heater for the liquid crystal display panel, and the wiring board side of the flexible wiring board. A panel for a liquid crystal display panel, wherein an electrode and an output lead of the connector cable are electrically connected via the clip. Connection structure of the over data and the connector cable. 2. The flexible wiring board and the clip,
The connection structure of a panel heater for a liquid crystal display panel and a connector cable according to claim 1, wherein the wiring board side electrode is connected at an exposed electrode portion exposed upward. 3. The connection structure between a panel heater for a liquid crystal display panel and a connector cable according to claim 2, wherein the electrode exposed portion is formed by bending one end of the flexible wiring board. 4. The electrode-exposed portion is one electrode of a wiring-board-side electrode formed on both surfaces of a flexible base film, and the electrodes on both surfaces are electrically connected via through holes. 3. The connection structure between a panel heater for a liquid crystal display panel and a connector cable according to claim 2, wherein: