WO2010001730A1

WO2010001730A1 - Liquid crystal display device

Info

Publication number: WO2010001730A1
Application number: PCT/JP2009/061077
Authority: WO
Inventors: 雅史川井
Original assignee: シャープ株式会社
Priority date: 2008-07-01
Filing date: 2009-06-18
Publication date: 2010-01-07
Also published as: JP2011185956A

Abstract

Provided is a liquid crystal display device for preventing a driver from being electrostatically broken down by the static electricity which may invade from the display-side opening of a bezel. An insulating tape (30) is attached to the peripheral edge of the opening of a bezel (20) from the outer face of the bezel (20) through the opening end face to the inner face of the side for contacting a liquid crystal panel (1). A conductor (35) extending in the longitudinal direction is attached to that outer face of the insulating tape (30) which is attached to the bezel outer face. The conductor (35) is electrically connected with the bezel (20) at the position where an electrically connecting portion between a flexible printed wiring substrate (22) having the driver mounted thereon and the liquid crystal panel is absent, thereby forming a surge current circuit.

Description

Liquid crystal display

The present invention relates to a liquid crystal display device, and more specifically, a liquid crystal panel drive driver is electrostatically destroyed by external static electricity entering from a gap between a display opening of a front case of the liquid crystal display device and the liquid crystal panel. It is to prevent.

Conventionally, a general active matrix type liquid crystal display device has a structure shown in FIG. In the liquid crystal panel 1, an array substrate made of a glass substrate in which a large number of signal lines and scanning lines are provided orthogonally and a substrate facing the front side are sealed with a liquid crystal member, and the periphery is sealed with a sealing material and bonded together. Forming. A switching element (TFT) is provided in the vicinity of the intersection between the signal line and the scanning line, the source electrode of the switching element is connected to the signal line, and the gate electrode is connected to the scanning line.
Liquid crystal driving circuits for supplying video signals and scanning signals to the signal lines and the scanning lines are arranged along the upper and lower and left and right edges of the glass substrate. Source driver ICs (hereinafter abbreviated as source drivers) 22 mounted on a flexible printed circuit board (FPC) 22 that connects one end of the signal line to one end are arranged on the upper and lower sides on the long side. Gate driver ICs (hereinafter abbreviated as gate drivers) 3 mounted on a flexible printed circuit board (FPC) 22 connected to the scanning lines are arranged on both the left and right sides, which are the short sides. The FPC on which the source driver 2 and the gate driver 3 are mounted is bent, and the other end is connected to the source circuit board 5 and the gate circuit board 6 arranged on the periphery of the liquid crystal panel 1. A backlight device 70 is disposed on the back side of the liquid crystal panel 1.

A metal frame-like bezel 10 having an opening 10 a is arranged on the display surface side of the liquid crystal panel 1, the bezel 10 is accommodated in a front cabinet (outer casing) 11, and a back cover 12 is assembled to the front cabinet 11. ing.
The opening 11a on the front side of the front cabinet 11 protrudes from the opening of the bezel 10 toward the display surface, and defines the screen size of the liquid crystal display device based on the opening area of the front cabinet 11.

In the liquid crystal display device configured as described above, there is a minute gap C between the opening end 11a of the front cabinet 11 and the surface of the liquid crystal panel 1. When static electricity enters from the outside through the gap C, a surge current SE flows to the metal terminal (electrode) 13 that connects the source driver 2 and gate driver 3 and the liquid crystal panel 1, and the driver is destroyed by static electricity. There is a problem that uneven display tends to occur.

In order to prevent the occurrence of electrostatic breakdown as described above, in Japanese Patent Laid-Open No. 2006-235303, as shown in FIG. 8, the opening of the front case 10 ′ on the side where the driver 2 is disposed (it is recognized that it corresponds to the bezel 10). The insulating tape 15 is affixed continuously to both the front and back surfaces and the opening end surface. In addition, the insulating tape 15 extends to the arrangement portion of the driver 2 on the inner surface side to prevent electrostatic breakdown of the driver 2.

JP 2006-235303 A

However, if only the insulating tape 15 is attached to the inner and outer surfaces and the end surface of the opening periphery of the front case 10 'corresponding to a metal bezel, a surge current flows into the front case 10' due to static electricity that has entered inside through the gap, and the surge When the voltage increases, a surge current flows along the surface of the insulating tape 15. Therefore, when the insulating tape 15 is extended to the arrangement part of the driver 2 and the connection part between the driver 2 and the liquid crystal panel 1 is covered with the insulating tape 15, the surge current flowing along the insulating tape 15 is short-circuited with the connection part. The driver 2 may be electrostatically damaged.
Furthermore, when the insulating tape 15 is disposed at a position close to the driver 2 that generates heat, there is a problem that the insulating tape 15 is deteriorated by heating and a melting damage occurs.

The present invention has been made in view of the above problems, and even if static electricity enters from the gap between the opening edge of the front cabinet and the liquid crystal panel, the driver connected to the liquid crystal panel does not cause electrostatic breakdown. The challenge is to do.

In order to solve the above problems, the present invention provides:
LCD panel,
One end is connected to the periphery of the liquid crystal panel, and a flexible printed wiring board on which a driver is mounted,
A circuit board for driving that is connected to the other end of the flexible printed circuit board and disposed on the periphery of the liquid crystal panel,
The liquid crystal panel and the circuit board are accommodated, and a bezel made of a metal holding frame having an opening on the display surface side of the liquid crystal panel,
An insulating tape is attached to the periphery of the opening of the bezel from the outer surface of the bezel through the opening end surface to the inner surface on the contact side with the liquid crystal panel, and in the longitudinal direction on the outer surface of the outer portion attached to the outer surface of the bezel. An extended conductor is attached, and a surge current circuit is formed by electrically connecting the conductor to the bezel at a position where the electrical connection portion between the flexible printed wiring board and the liquid crystal panel is not located. The device is provided.

As described above, according to the present invention, a conductor is attached to the outer portion of the insulating tape to be attached to the periphery of the opening of the bezel, and the bezel is located at a position where there is no connection portion between the driver and the liquid crystal panel mounted on the flexible printed wiring board. And a surge current circuit is formed, and the surge current is released from the bezel. Therefore, it is possible to prevent a surge current from being short-circuited to a terminal portion connecting the driver and the liquid crystal panel, and it is possible to prevent electrostatic breakdown from occurring in the driver. The insulating tape is preferably formed of a highly insulating resin such as a polyester resin.

At both ends in the length direction of the conductor or one end in the length direction, the conductor is electrically connected to the bezel at a position where an electrical connection portion between the driver mounted on the flexible printed wiring board and the liquid crystal panel is not located.
That is, when the liquid crystal display device is large, the conductor is long, and it is preferable that both ends thereof are connected to the bezel. On the other hand, when the liquid crystal display device is small, the conductor is short, so that at least one end side in the length direction is connected to the bezel.

Further, when the liquid crystal display device is large, a branch conductor is provided that branches from the middle portion in the length direction of the long conductor to the rear side on the back side, and the flexible wiring board and the liquid crystal are provided at the back end of the branch conductor. You may connect on the back side of the bezel on the side where a connection part with a panel is not located.

Poron made of a flexible resin sheet is attached to the inner surface of the peripheral edge of the opening of the bezel, the insulating tape is attached so as to surround the inner surface from the opening end surface of the poron, and the inner part of the insulating tape is attached to the surface of the liquid crystal panel. It is preferable to be in contact with the surface of the attached polarizing plate.

As described above, when a poron made of a flexible resin sheet is affixed to the inner surface of the opening periphery of the metal vessel, and further an insulating tape is affixed to the inner surface of the boron, the insulating tape is attached to the surface side periphery of the liquid crystal panel. Can be contacted without gaps. Therefore, it is possible to prevent static electricity from entering through a gap along the surface of the liquid crystal panel, and to allow the entered static electricity to wrap around the outer portion of the insulating tape attached to the outer surface of the vessel. Static electricity that has flowed around the outer portion of the insulating tape is absorbed by the conductor attached to the outer surface of the outer portion of the insulating tape, and a surge current can be released from the outer end portion of the vessel through the conductor.
The poron is formed of a microcell polymer sheet (highly functional urethane foam) and has flexibility and shock absorption.

The conductor attached to the outer surface of the outer side of the insulating tape is in the form of a narrow band arranged at the center in the width direction of the insulating tape, and does not protrude from both ends in the width direction of the insulating tape, while the length of the insulating tape is It is preferable that a conductor protrudes from the tip and is connected to the bezel via a conductive resin.

The conductor is preferably formed of a metal material having excellent conductivity, such as copper foil or copper tape. The width of the conductor is 1/2 to 1/4 with respect to the width of the insulating tape so that the conductor does not protrude from the width direction of the insulating tape. Thus, the conductor is prevented from coming into contact with the bezel except at the corner at the tip in the length direction, and the short circuit of the surge current from the bezel to the driver is surely prevented.

The insulating tape is attached to the upper and lower and left and right peripheral edges of the bezel opening, and the conductor is attached to the outer portion of the insulating tape on the opening peripheral side where at least the source driver mounted on the flexible printed circuit board is disposed. Preferably it is.

In the present invention, since the driver is prevented from being destroyed by static electricity entering from the gap between the display surface side of the liquid crystal panel and the opening peripheral edge of the bezel, the bezel is placed at the upper, lower, left or right peripheral edge where the driver is disposed. It is preferable to attach the conductor to the insulating tape attached to the cover as described above.
Usually, the source driver is arranged on either the upper or lower side or the upper or lower side which becomes the long side edge, and the gate driver is arranged on the left or right side or the left or right side which becomes the short side edge. The conductor attached to the insulating tape for preventing electrostatic breakdown is preferably attached to the insulating tape on the peripheral edge of the opening on the side where the driver having low resistance to static electricity is disposed.
In a large liquid crystal display device, since the opening length on the short side where the driver is arranged is large, it is preferable to attach the conductor to the insulating tape attached to the opening periphery of the short side.

The leading end of the inner part of the insulating tape extends to a position surrounding the connecting terminal at the leading end of the flexible printed wiring board connected to the liquid crystal panel with a space. A heat radiation sheet may be interposed between the flexible printed wiring board and the bezel at a position close to the tip of the inner side of the insulating tape.

A metal terminal is connected to the circuit tip of the flexible printed circuit board constituting the driver, and the metal terminal is electrically connected to the circuit of the liquid crystal panel. However, when the driver is operating, the driver itself is in a high temperature state. Therefore, when the insulating tape is disposed close to or in contact with the driver, the insulating tape may be heated to cause melting. However, it is necessary to reliably prevent a surge current from being short-circuited to the electrical connection portion, and it is preferable to cover with an insulating tape. Therefore, in the present invention, the electrical connection portion by the metal terminal is covered with an insulating tape with a space, and the inner portion of the insulating tape is terminated at a position covering the electrical connection portion and does not extend to the driver side. . In addition, by disposing a heat dissipation sheet between the driver and the bezel at a position close to the electrical connection portion, heat generated in the driver is transmitted to the bezel via the heat dissipation sheet, thereby radiating heat. Heating of the connecting part is suppressed.
The heat dissipation sheet is preferably formed of an insulating silicone resin (polymer organic compound).

A front cabinet made of an insulating material is covered on the bezel, an opening is provided on the display surface side of the front cabinet, and a front end surface of an opening peripheral wall portion formed on a peripheral portion of the opening is a polarizing plate on the display surface side of the liquid crystal panel It is arranged to touch. The opening peripheral edge of the front cabinet is covered with the insulating tape attached to the opening peripheral edge of the bezel, and the outer surface of the outer side of the insulating tape is located facing the inner surface of the front cabinet. However, there may be a minute gap between the front end face of the peripheral edge of the opening and the polarizing plate due to the structure.

In a liquid crystal display device, an insulating front cabinet made of a resin molded product is attached to a bezel. The size of the display screen of the liquid crystal panel is defined by the opening size of the front cabinet, and the front end of the opening of the front cabinet is disposed on the surface of the polarizing plate of the liquid crystal panel.
Even if a gap is generated between the opening of the front cabinet and the polarizing plate, the insulating tape attached to the periphery of the opening on the bezel is elastically supported by the poron and contacts the surface of the liquid crystal panel. Static electricity can be prevented from flowing along the surface of the liquid crystal panel.

When the front cabinet is formed of a conductive metal material or carbon fiber reinforced resin, there is a risk of contact with the conductor attached to the outer surface of the outer portion of the insulating tape. It is covered.

As described above, the present invention absorbs static electricity entering from the gap between the display side opening of the bezel and the liquid crystal panel by the conductor attached to the outer surface of the outer side of the insulating tape attached to the periphery of the opening of the bezel. Then, a surge current is passed through the conductor, and the conductor is connected to the bezel at the corner of the bezel. Therefore, it is possible to release the surge current to the bezel at a position that does not affect the driver, and as a result, it is possible to reliably prevent the electrostatic breakdown from occurring in the driver.

It is principal part sectional drawing of 1st embodiment of this invention. It is a front view except the front cabinet of a first embodiment. It is a principal part enlarged view of 1st embodiment, (A) is a front view, (B) is sectional drawing. It is a principal part front view of 2nd embodiment. It is a front view except a front cabinet of a third embodiment. It is a principal part enlarged view of 4th embodiment. A prior art example is shown, (A) is a schematic sectional view, and (B) is a front view excluding a front cabinet. It is drawing which shows another prior art example.

Hereinafter, a liquid crystal display device according to an embodiment of the present invention will be described with reference to the drawings.
The overall arrangement of the liquid crystal display device is substantially the same as the conventional example shown in FIG.
That is, the plastic chassis 7 is disposed on the back side of the liquid crystal panel 1, the liquid crystal panel 1 is surrounded by a bezel 20 made of electrogalvanized steel plate (SECC), and the liquid crystal panel 1 is sandwiched between the plastic chassis 7 and the bezel 20. Yes. In this state, it is housed in a front cabinet 21 made of a resin molded product. The front cabinet 21 is provided with an opening peripheral wall 21c bent inward from the outer wall 21b at the periphery of the opening 21a, and the front end surface of the opening peripheral wall 21c is in contact with the polarizing plate 9 attached to the surface of the liquid crystal panel 1. Is arranged. However, there may be a minute gap C between the front end face of the opening peripheral wall 21c and the polarizing plate 9. The opening 21 a of the front cabinet 21 protrudes to the surface side from the opening 20 a of the bezel 20.

Further, as shown in FIG. 2, the source drivers 2 mounted on the flexible wiring conductor (FPC) 22 are arranged along the upper and lower edges on the long side of the liquid crystal panel 1 with a distance in the entire length in the left-right direction. ing. The gate driver 3 mounted on the FPC is disposed along the left and right edges on the short side of the liquid crystal panel 1 with a distance in the entire length direction.

As shown in FIG. 1, the FPC 22 is bent into an L shape, a metal terminal 23 is connected to one end 2 a of a circuit conductor of the FPC 22, and the signal circuit of the liquid crystal panel 1 is connected via the metal terminal 23. The other end 2 b of the circuit conductor is connected to the source circuit board 4. The upper source circuit board 4 of the liquid crystal panel 1 is fixed to the upper surface of the bent upper wall 7 a of the plastic chassis 7, and the lower source circuit board is fixed to the lower surface of the bent lower wall of the plastic chassis 7.
The FPC on which the gate driver 3 is mounted is similarly bent, and one end of a circuit conductor of the FPC is connected to the liquid crystal panel 1 and the other end is connected to a gate circuit board (not shown) fixed to the plastic chassis 7. .

In the bezel 20, a poron 25 made of a flexible and elastic resin sheet is attached to the inner surface side of the periphery of the opening 20 a, and a step-shaped refracting portion 20 b is provided on the periphery of the bezel opening by the thickness of the poron 25. The poron 25 is brought into contact with the outer peripheral edge of the polarizing plate 9 attached to the front surface side of the liquid crystal panel 1, and the poron 25 and the plastic chassis 7 sandwich the liquid crystal panel 1 from both the front and back surfaces.
The poron 25 is formed of a microcell polymer sheet (high-functional urethane foam), has a thickness of 0.5 to 1.2 mm, and is 1 to 3 mm shorter than each of the long side and the short side of the liquid crystal panel 1. It is a length.

The insulating tape 30 is continuously folded back in the U shape from the outer surface of the bezel 20 to the inner surface side of the poron 25 through the end surface of the opening 20a at the peripheral edge of the opening of the bezel 20 where the poron 25 is bonded to the inner surface side with an adhesive. Pasted.
The insulating tape is made of a polyester resin that meets UL standards, and has a thickness of 0.02 to 0.1 mm.

Specifically, the insulating tape 30 includes an outer portion 30a attached to the outer surface of the stepped refracting portion 20b of the bezel 20, a bent end surface portion 30b attached to the opening end surface 20c of the bezel 20 and the opening end surface 25a of the poron 25, and the poron 25. And an inner portion 30c to be attached to the inner surface.
In a state where the bezel 20 is assembled to the liquid crystal panel 1, the inner portion 30 c of the insulating tape 30 is located between the outer surface of the polarizing plate 9 and the poron 25. The inner portion 30c extends to a position where the metal terminal 23 at the tip of the source driver 2 connected to the liquid crystal panel 1 is covered with the space S and covered from the outer surface. The leading end 30d of the inner portion 30c of the insulating tape 30 extends to a position that covers the metal terminal 23, and the source driver 2 is not covered.
Further, the bent end surface portion 30b of the insulating tape 30 is positioned with a gap in the inner surface of the opening peripheral wall portion 21c of the front cabinet 21 with the front cabinet 21 attached.

A heat dissipating sheet 32 is attached between the source driver 2 and the bezel 20 at a position close to the metal terminal 23 and close to the tip of the inner portion 30c of the insulating tape 30. The heat radiating sheet 32 is formed of an insulating silicone resin (polymer organic compound). The heat radiation sheet 32 causes heat generated from the source driver 2 to flow to the bezel 20 to radiate heat, so that the insulating tape 30 is not affected by heat.

A conductor 35 made of a thin copper foil is attached to the outer surface of the outer portion 30a of the insulating tape 30 to be attached to the outer surface of the stepped refracting portion 20b of the bezel 20 on both the upper and lower sides on which the source driver 2 is arranged. ing.
As shown in FIG. 3, the conductor 35 does not protrude from both ends 30 s 1 and 30 s 2 in the width direction of the insulating tape 30, and both

end protruding portions

35 a and 35 b protrude from both ends of the insulating tape 30 at both ends in the length direction L. Yes. The protruding

positions

35a, 35b of the conductor 35 are the corners where the upper and lower frames of the bezel 20 and the left and right frames are continuous at the left and right end positions where the liquid crystal panel 1 and the source driver 2 are not positioned on the opposing inner surface side. Yes.
Both end

protrusions

35 a and 35 b of the conductor are directly bonded and fixed to the outer surface of the bezel 20 via a conductive adhesive 37 to be electrically connected.

The surge current SE flowing from the conductor 35 to the bezel 20 flows to a backlight chassis (not shown) connected to the bezel 20, and is connected to a power outlet (not shown) via a power circuit (not shown) attached to the backlight chassis. (Not shown).

As described above, on both the upper and lower sides on the side where the source driver 2 is arranged, a surge current circuit is formed by further attaching a conductor 35 to the insulating tape 30 attached to the bezel 20.
On the other hand, the insulating tape 30 and the conductor 35 are not attached to the left and right sides on the side where the gate driver 3 is arranged, and no surge current circuit is formed.
This is because the liquid crystal display device of the present embodiment is medium and small, and the gate driver 3 is more resistant to electrostatic breakdown than the source driver 2.

As described above, in the liquid crystal display device of the present embodiment, the conductor 35 is further arranged on the outer surface of the outer portion 30a of the insulating tape 30 attached to the opening periphery of the bezel 20, and the conductor 35 is disposed at the left and right corners. A surge current circuit is formed by electrical connection with the bezel 20.
Therefore, when there is a minute gap C between the opening end of the front cabinet 21 and the polarizing plate 9 attached to the surface of the liquid crystal panel 1, the peripheral portion of the liquid crystal panel 1 and the source driver 2 in the bezel 20 and the front cabinet 21. Even if static electricity penetrates into the portion surrounded by the outside and a surge current SE is generated in the bezel 20, the surge current can be collected on the conductor 35. The conductor 35 can flow to the bezel 20 at both left and right ends away from the position facing the metal terminal 23 connecting the source driver 2 and the liquid crystal panel 1. As a result, it is possible to reliably prevent the surge current from being short-circuited with the metal terminal 23.

In particular, the conductor 35 attached to the insulating tape 30 is electrically connected to the bezel 20 at the left and right corners that are not located on the inner side where the liquid crystal panel 1 and the source driver 2 face each other. In addition, since the conductor is attached to the outer surface of the outer portion 30a of the insulating tape 30 to be attached to the outer surface of the bezel 20, the surge current SE flowing through the conductor 35 affects the circuit of the source driver 2 and the liquid crystal panel 1 and causes noise. It can be prevented from becoming a source.

FIG. 4 shows a second embodiment. The second embodiment is suitably used for a small liquid crystal display device.
The right end of the conductor 35 attached to the outer surface of the outer portion 30 a of the insulating tape 30 is not protruded from the insulating tape 30, and only the left end protruding portion 35 b protrudes from the insulating tape 30 and is electrically connected to the bezel 20. Thus, a surge current circuit is formed which continues from only the left end of the conductor 35 to the bezel 20. Other configurations are the same as those of the first embodiment, and the same reference numerals are given and the description thereof is omitted.

When the liquid crystal display device is small, the length of the conductor 35 attached to the insulating tape 30 is also short because the dimensions of the upper and lower sides are short. Therefore, even if the conductor 35 is connected to the corner portion of the bezel 20 only on one end side in the left-right direction, the source driver can be prevented from being adversely affected by the surge current.

FIG. 5 shows a third embodiment. The third embodiment is suitably used for a large liquid crystal display device.
In the third embodiment, the insulating tape 30 is attached to both the left and right sides of the bezel 20 on both the left and right sides where the gate driver 3 is disposed, and the conductor 35 is also attached to the outer surface of the outer portion 30a. The bezel 20 and the conductor 35 are connected. Other configurations are the same as those in the first embodiment.
With this configuration, similarly to the source driver 2 side, the surge current flowing through the bezel 20 is short-circuited to the metal terminal 23 forming the connection portion with the liquid crystal panel 1 on the gate driver 3 side, and electrostatic breakdown occurs. Can be prevented.

FIG. 6 shows a fourth embodiment. The fourth embodiment is suitably used for a large liquid crystal display device as in the third embodiment.
As in the first embodiment, the insulating tape 30 is attached along the upper and lower edges of the opening of the bezel 20 on both the upper and lower sides on which the source driver 2 is arranged, and the conductor 35 is attached to the outer portion 30 a of the insulating tape 30. The left and right ends 35 a and 35 b of the conductor 35 are electrically connected to the bezel 20.
Furthermore, a branch protrusion 35h that branches backward on the back side with a gap is provided in the left-right extension 35c of the conductor 35 that is linearly continuous with the left and

right protrusions

35a, 35b, and the branch protrusion 35h. The rear projecting end 35i of the first electrode is protruded from the insulating tape 30 and is electrically connected to the bezel 20 to form a branch surge current circuit. A connecting portion between the source driver 2 and the liquid crystal panel 1 is not disposed on the inner surface side facing the connecting position between the branch projecting end 35 i and the bezel 20.
Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

In a large liquid crystal display device having a large length in the left-right direction, the length of the conductor 35 extending in the left-right direction is also large. Therefore, as described above, in addition to flowing a surge current from only the left and right ends 35a and 35b of the conductor 35 to the bezel 20, the surge current is also generated from the branch projecting end 35i provided at an intermediate position in the length direction of the conductor 35. To the bezel 20. With this configuration, the leakage surge current from the long bezel 20 can be eliminated, and the adverse effect of the surge current on the source driver can be reliably prevented. Note that the branch projecting ends may be similarly provided on the conductors 35 arranged on both the left and right sides on the gate driver side.

Claims

LCD panel,
One end is connected to the periphery of the liquid crystal panel, and a flexible printed wiring board on which a driver is mounted,
A circuit board for driving that is connected to the other end of the flexible printed wiring board and disposed on the periphery of the liquid crystal panel;
The liquid crystal panel and the circuit board are accommodated, and a bezel made of a metal holding frame having an opening on the display surface side of the liquid crystal panel,
An insulating tape is attached to the periphery of the opening of the bezel from the outer surface of the bezel through the opening end surface to the inner surface on the contact side with the liquid crystal panel, and in the longitudinal direction on the outer surface of the outer portion attached to the outer surface of the bezel. An extended conductor is attached, and a surge current circuit is formed by electrically connecting the conductor to the bezel at a position where the electrical connection portion between the flexible printed wiring board and the liquid crystal panel is not located. apparatus.
The liquid crystal display device according to claim 1, wherein at least both ends in the length direction or one end in the length direction of the conductor are electrically connected to the bezel.
Poron made of a flexible resin sheet is attached to the inner surface of the opening peripheral edge of the bezel, the insulating tape is attached so as to surround the inner surface from the opening end surface of the poron, and the inner part of the insulating tape is attached to the surface of the liquid crystal panel The liquid crystal display device according to claim 1, wherein the liquid crystal display device is in contact with the surface of the attached polarizing plate.
The conductor attached to the outer surface of the outer side of the insulating tape is in the form of a narrow band arranged at the center in the width direction of the insulating tape, and does not protrude from both ends in the width direction of the insulating tape, while the length of the insulating tape is 4. The liquid crystal display device according to claim 1, wherein a conductor protrudes from a tip and is connected to the bezel through a conductive resin. 5.
The insulating tape is attached to the upper and lower and left and right peripheral edges of the bezel opening, and the conductor is attached to the outer portion of the insulating tape on the peripheral edge side of the opening where the driver mounted on the flexible printed circuit board is disposed. The liquid crystal display device according to any one of claims 1 to 4.
The liquid crystal display device according to claim 1, wherein the driver is a gate driver that drives a scanning line of the liquid crystal panel.
The liquid crystal display device according to any one of claims 1 to 5, wherein the driver is a source driver that drives a data line of the liquid crystal panel.
The tip of the inner part of the insulating tape is located up to a position surrounding the connecting terminal at the tip of the flexible printed circuit board connected to the liquid crystal panel with a space, and at a position close to the tip of the inner part of the insulating tape, The liquid crystal display device according to claim 1, wherein a heat dissipation sheet is interposed between the flexible printed wiring board and the bezel.
Cover the bezel with a front cabinet made of an insulating material, provide an opening on the display surface side of the front cabinet, and set the front end surface of the opening peripheral wall portion formed on the peripheral edge of the opening to the polarization on the display surface side of the liquid crystal panel. The insulating tape is disposed so as to be in contact with a plate and is attached to the opening peripheral edge of the bezel at the opening peripheral edge of the front cabinet, and the outer surface of the outer portion of the insulating tape is located opposite to the inner surface of the front cabinet. The liquid crystal display device according to claim 1.