JP2010151852A - Liquid crystal display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal display including a static electricity prevention structure by which error display caused by static electricity is not easily generated. <P>SOLUTION: The liquid crystal display includes: a liquid crystal display panel 1; a cell case 4 for holding the liquid crystal display panel 1; a circuit board 5 disposed on the back of the liquid crystal display panel 1; a conductive terminal 7 (connection member) for connecting the liquid crystal panel 1 to the circuit board 5; and a display plate 8 (front plate) covering the peripheral edge part of the liquid crystal display panel 1, wherein, a conductive member 9 brought into contact with the display plate 8 and contact with also the earth terminal 71 (earth part) of the terminal 7 is disposed between the display plate 8 and the liquid crystal display panel 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid crystal display device provided in a vehicle, for example, and particularly to a liquid crystal display device provided with an antistatic structure.

As a liquid crystal display device including a liquid crystal display panel, for example, there is Patent Document 1 below. The liquid crystal display device described in Patent Document 1 includes a holder 3 for holding the liquid crystal display panel 1, a panel holder 7 made of synthetic resin that holds the peripheral edge of the liquid crystal display panel 1, and a front side of the liquid crystal display panel 1. When the signal (voltage) according to the external measurement amount is applied to the electrode portion provided on the liquid crystal display panel 1 and the like, for example, the engine rotational speed of the vehicle The remaining amount of fuel is displayed.
JP 2007-121486 A

  However, in the liquid crystal display device as in the above-mentioned Patent Document 1, there is a possibility that the display of the liquid crystal display panel may be erroneously displayed due to the influence of static electricity charged on the panel holder 7 or the upper case 9.

  The present invention has been made in view of these points, and an object of the present invention is to provide a liquid crystal display device having an antistatic structure in which erroneous display due to static electricity hardly occurs.

  To achieve the above object, the present invention provides a liquid crystal display panel, a cell case for holding the liquid crystal display panel, a circuit board disposed behind the liquid crystal display panel, the liquid crystal display panel, and the circuit board. In a liquid crystal display device comprising a conductive connecting member that connects the two and a front plate that covers the peripheral portion of the liquid crystal display panel, a conductive member that contacts the ground plate of the connecting member while contacting the front plate It is disposed between the front plate and the liquid crystal display panel.

  Further, the conductive member is partially brought into contact with the front plate.

  Moreover, the contact piece which has the elasticity which contacts the said earth | ground part is provided in the said conduction | electrical_connection member.

  Further, the conducting member is attached to the cell case.

  The conducting member is mounted on the front plate.

  A liquid crystal display panel; a cell case for holding the liquid crystal display panel; a circuit board disposed behind the liquid crystal display panel; and a conductive connecting member that connects the liquid crystal display panel and the circuit board. In the liquid crystal display device including a front plate that covers a peripheral portion of the liquid crystal display panel, the front plate and the ground portion of the connecting member are brought into contact with each other.

  Moreover, the elastic contact piece which contacts the other is provided in either one of the said front plate or the said earth | ground part.

  A liquid crystal display device having an antistatic structure in which erroneous display due to static electricity hardly occurs can be obtained.

  FIG. 1 is a front view of a liquid crystal display device showing a first embodiment of the present invention. 2 is a cross-sectional view of the liquid crystal display device (cross section AA in FIG. 1), and FIG. 3 is a partial cross-sectional view of the liquid crystal display device (cross section BB in FIG. 1). FIG. 4 is a front view of a conducting member used in the liquid crystal display device.

  The liquid crystal display device is arranged between a rectangular transmissive liquid crystal display panel 1, a light guide member 2 disposed on the back side of the liquid crystal display panel 1, and the liquid crystal display panel 1 and the light guide member 2. Optical film 3, such as a diffusion sheet or a prism sheet, a cell case 4 in which the liquid crystal display panel 1, the optical film 3, and the light guide member 2 are held, and behind this cell case 4 (also behind the liquid crystal display panel 1) A hard circuit board 5 disposed on the circuit board 5, a light emitting diode 6 mounted on the circuit board 5 as a light source for illuminating the liquid crystal display panel 1, and a conductive connecting member that connects the liquid crystal display panel 1 and the circuit board 5. The terminal 7 is provided.

  Further, a display plate 8 as a front plate covering the peripheral edge of the liquid crystal display panel 1, a conductive member 9 disposed between the display plate 8 and the liquid crystal display panel 1, and an operation of the vehicle provided on the display plate 8 A notification display unit 8A for displaying a state, a notification display unit light-emitting diode 10 mounted on the circuit board 5 as a light source for illuminating the notification display unit 8A, and a reversal covering the peripheral portions of the display plate 8 and the cell case 4 The member 11 is provided.

  Although not shown in detail, the liquid crystal display panel 1 includes liquid crystal molecules enclosed between the front glass substrate 1A and the rear glass substrate 1B and a polarizing film attached to each glass substrate 1A, 1B, as is well known. is there. A plurality of terminals 7 are fixed to the liquid crystal display panel 1. One end of the terminal 7 is electrically connected to a transparent electrode portion (not shown) drawn from the glass substrates 1A and 1B, and the other end is electrically connected to a circuit formed on the circuit board 5. It has become. When a signal (voltage) corresponding to an external measurement amount is applied to the electrode portion through the terminal 7, the liquid crystal display portion 1C on which the vehicle operating state (for example, the vehicle speed) is displayed appears in black. ing. The background portion 1D other than the liquid crystal display portion 1C is transmitted and illuminated by lighting of the light-emitting diodes 6 mounted on the circuit board 5.

  The terminal 7 is made of metal such as phosphor bronze or stainless steel, and has a sandwiching portion 7A and a lead portion 7B having a substantially U-shaped cross section. The edge of the rear glass substrate 1B of the liquid crystal display element 1 is sandwiched between the sandwiching portion 7A and is electrically connected to the electrode portion as described above, and the lower end of the lead portion 7B is a circuit formed on the circuit substrate 5. Soldered (connected). The number of terminals 7 in this embodiment is eight, and the shapes are all the same, but one of them is a ground terminal 71 (ground part).

  The cell case 4 is made of, for example, a white synthetic resin, and is placed along the outer periphery of the light guide member 2 and the liquid crystal display panel 1 and the mounting portion 4A on which the light guide member 2, the optical film 3, and the liquid crystal display panel 1 are placed. It has a peripheral wall 4B provided, a lamp chamber 4C corresponding to each notification display portion 8A provided on the display board 8, and the like.

  In addition to the light emitting diode 6 that illuminates the liquid crystal display panel 1 and the notification display unit light emitting diode 10 that illuminates the notification display unit 8A as described above, the circuit board 5 is driven to drive a power supply circuit and liquid crystal (not shown). Control means such as a circuit is mounted. A through hole 5A is provided at a location corresponding to the lead portion 7B of the terminal 7, and the lower end side of the lead portion 7B is inserted into the through hole 5A and soldered.

  The display panel 8 has an opening window 8 </ b> B that allows the visible region of the liquid crystal display panel 1 to be visually recognized, and is disposed on the peripheral wall 4 </ b> B of the cell case 4 so as to cover the peripheral edge of the liquid crystal display panel 1. Although not shown in detail, the display plate 8 is a thin smoke layer on the surface side of a region corresponding to the notification display portion 8A such as at least the turn signal display portion 8AA and the upper beam display portion 8AB of a colorless and transparent substrate made of synthetic resin. Is printed, and a ground color layer of, for example, black (non-transparent), which becomes the ground portion, is printed except for the turn signal mark and the upper beam mark. When the notification display unit light emitting diode 10 is turned on, the notification display unit 8A blinks or lights up with the light emission color of the notification display unit light emitting diode 10 to notify the vehicle driver of the operating state of the vehicle. .

  The light guide member 2 is a substantially flat plate made of a colorless and transparent synthetic resin, and has a light receiving portion 2A and a reflective surface 2B as shown in FIG. When the light emitting diode 6 is turned on, the light from the light emitting diode 6 enters the light receiving portion 2A, is reflected by the reflecting surface 2B, and is guided in the surface direction of the light guide member 2. This light is transmitted through the optical film 3 to illuminate the background portion 1D other than the liquid crystal display portion 1C. Although the light receiving part 2A is provided on the end side of the light guide member 2 so that light from the light emitting diode 6 enters, the light emitting diode 6 is disposed on the back side of the light guide member 2 to introduce light. You may do it.

  The conducting member 9 is made of a metal made of, for example, a plated steel plate or a stainless steel plate, and is attached to the flat portion 9A that contacts the back surface of the display plate 8 and the peripheral wall 4B of the cell case 4 provided at both ends of the flat portion 9A. It has a bent portion 9B and a contact piece 9C that comes into contact with the ground terminal 71 fixed to the rear glass substrate 1B of the liquid crystal display element 1, and is disposed between the display plate 8 and the liquid crystal display panel 1. Yes. In addition, a plurality of hemispherical protrusions 9D protruding toward the display plate 8 are formed on the flat surface portion 9A, and the protrusions 9D and the back surface of the display plate 8 are in contact with each other. The bent portion 9B is provided with a protruding portion 9E.

  The facing member 11 is made of, for example, a black synthetic resin having rigidity, and has an opening 11 </ b> A that defines a visible region of the display panel 8 or the liquid crystal display panel 1. Although not shown, the facing member 11 is fixed to the cell case 4 by a hook or the like.

  A method of assembling the liquid crystal display device in this embodiment will be described. First, the circuit board 5 on which the light emitting diode 6 and the control means are mounted on the back side of the cell case 4 is assembled by screws, hooks, etc. (not shown). Thereafter, the light guide member 2, the optical film 3, and the liquid crystal display panel 1 to which the terminals 7 are previously fixed are sequentially placed on the placement portion 4 </ b> A of the cell case 4. At this time, as described above, the lower end of the lead portion 7B of the terminal 7 is inserted into the through hole 5A provided in the circuit board 5 and soldered. The soldering may be performed after the turn-back member 11 is assembled. Although not shown, the edge of the liquid crystal display panel 1 is locked by a locking piece provided on the cell case 4.

  Next, the conductive member 9 is placed along the edge of the liquid crystal display panel 1 to which the terminal 7 is fixed, and is assembled (attached) to the cell case 4. For example, as shown in FIG. 3, the protruding portion 9E provided on the bent portion 9B of the conducting member 9 is locked to the locking portion 4D protruding from the peripheral wall 4B. By assembling the conductive member 9 to the cell case 4, the contact piece 9 </ b> C of the conductive member 9 comes into contact with the holding portion 7 </ b> A of the ground terminal 71.

  Next, the display board 8 is disposed on the peripheral wall 4 </ b> B of the cell case 4. As a result, in the present embodiment, the back surface of the display plate 8 and the projection 9D provided on the flat surface portion 9A of the conducting member 9 come into contact with each other. Thereafter, the facing member 11 is assembled (attached) to the cell case 4. By attaching the facing member 11 to the cell case 4, even if the display board 8 is about to float, the peripheral edge of the display board 8 can be pressed to prevent the display board 8 from rising, and the back surface of the display board 8 can be prevented. And the protrusion 9D of the conductive member 9 are reliably in contact with each other.

  In this way, the liquid crystal display panel 1, the cell case 4 that holds the liquid crystal display panel 1, the circuit board 5 disposed behind the liquid crystal display panel 1, and the liquid crystal display panel 1 and the circuit board 5 are connected. In a liquid crystal display device including a conductive terminal 7 (connection member) and a display plate 8 (front plate) that covers a peripheral portion of the liquid crystal display panel 1, the ground terminal of the terminal 7 is in contact with the display plate 8. By disposing the conductive member 9 in contact with 71 (ground portion) between the display panel 8 and the liquid crystal display panel 1, the static electricity to be charged on the display panel 8 or the like is grounded on the circuit board 5 through the ground terminal 71. It is possible to obtain a liquid crystal display device having an antistatic structure that is unlikely to cause erroneous display due to static electricity on the liquid crystal display panel 1.

  Further, a plurality of hemispherical protrusions 9D are formed on the conductive member 9, and the protrusion 9D and the back surface of the display plate 8 are brought into contact with each other, so that the contact between the conductive member 9 and the display plate 8 is partially achieved. It becomes. Therefore, even if the conductive member 9 or the display plate 8 is slightly deformed, the conductive member 9 and the display plate 8 come into contact with each other reliably.

  Further, since the conducting member 9 is attached to the cell case 4, the liquid crystal display panel 1 and the conducting member 9 are held (attached) to the same cell case 4 and are fixed to the liquid crystal display panel 1. A difference in position between the position of the ground terminal 71 and the contact piece 9 </ b> C of the conductive member 9 is unlikely to occur, and the conductive member 9 and the ground terminal 71 come into reliable contact.

  Although not shown, the following can be considered as a modification of the present embodiment. The contact piece 9C provided on the flat surface portion 9A of the conducting member 9 is made elastic and is brought into contact with the clamping portion 7A in a state where a tension is applied. By configuring in this way, the contact piece 9C can be reliably brought into contact with the sandwiching portion 7A (the ground terminal 71).

  FIG. 5 is a cross-sectional view (corresponding to the AA cross section in FIG. 1) of the liquid crystal display device showing the second embodiment of the present invention. FIG. 6 is a back view showing a state in which the conductive member is mounted on the front plate. The liquid crystal display device in this embodiment does not include a display plate. Therefore, the facing member in this embodiment is the front plate in the present invention. In addition, the same code | symbol is attached | subjected about the same or an equivalent location as the said 1st Embodiment, and detailed description is abbreviate | omitted.

  The liquid crystal display device includes a liquid crystal display panel 1, a light guide member 2 disposed on the back side of the liquid crystal display panel 1, an optical film 3 disposed between the liquid crystal display panel 1 and the light guide member 2, The cell case 4 in which these are held, the circuit board 5 disposed behind the cell case 4, the light emitting diode 6 mounted on the circuit board 5, and the liquid crystal display panel 1 and the circuit board 5 are connected. A terminal 7 as a conductive connecting member, a turning member 11 as a front plate covering the peripheral portion of the liquid crystal display panel 1, a conduction member 9 disposed between the turning member 11 and the liquid crystal display panel 1, and the like. I have.

  The cell case 4 is made of, for example, a white synthetic resin, and is placed along the outer periphery of the light guide member 2 and the liquid crystal display panel 1 and the mounting portion 4A on which the light guide member 2, the optical film 3, and the liquid crystal display panel 1 are placed. It has the surrounding wall 4B etc. which were provided.

  The conducting member 9 is made of a metal made of, for example, a plated steel plate or a stainless steel plate, and is connected to a flat portion 9A that is in contact with the back surface of the facing member 11 and a ground terminal 71 fixed to the rear glass substrate 1B of the liquid crystal display element 1. The contact piece 9 </ b> C is in contact, and is disposed between the turning member 11 and the liquid crystal display panel 1. This contact piece 9C has elasticity. Moreover, the round hole 9F is provided in the both ends of 9 A of plane parts.

  The facing member 11 is made of, for example, a black synthetic resin having rigidity, and has an opening 11 </ b> A that defines a visible region of the liquid crystal display panel 1. Further, a round pin 11 </ b> B protrudes from a location corresponding to the round hole 9 </ b> F provided in the conductive member 9. The conducting member 9 is attached to the turning member 11 so that the turning member 11 and the conducting member 9 come into contact with each other. After fitting the round pin 11B and the round hole 9F provided in the conducting member 9, the tip of the round pin 11B is melted by applying heat (thermal welding), and the conducting member 9 is fixed to the back surface of the member 11 Just do it.

  A method of assembling the liquid crystal display device in this embodiment will be described. As in the first embodiment, the circuit board 5 is assembled to the back side of the cell case 4. Thereafter, the liquid crystal display panel 1 to which the light guide member 2, the optical film 3, and the terminals 7 are fixed is sequentially placed on the placement portion 4 </ b> A of the cell case 4. Although not shown, the edge of the liquid crystal display panel 1 is locked by a locking piece provided on the cell case 4.

  Next, the turning member 11 on which the conductive member 9 is mounted in advance is assembled (attached) to the cell case 4 with a hook or the like (not shown). As a result, the contact piece 9 </ b> C of the conducting member 9 comes into contact with the holding portion 7 </ b> A of the ground terminal 71. At this time, since the contact piece 9C has elasticity, a tension is applied to the holding portion 7A.

  With this configuration, it is possible to discharge static electricity to be charged to the turning member 11 and the like to the ground circuit of the circuit board 5 through the ground terminal 71, and the liquid crystal display panel as in the first embodiment. Thus, it is possible to obtain a liquid crystal display device having an antistatic structure in which an erroneous display due to static electricity hardly occurs.

  Further, since the conducting member 9 is fixed to the turning member 11 by fitting the round hole 9F and the round pin 11B, it is simple and compact even when there is no space for mounting the conducting member 9 on the cell case 4 side. The conducting member 9 can be arranged between the member 11 and the liquid crystal display panel 1 with a simple structure. Furthermore, the contact piece 9C provided on the flat surface portion 9A of the conducting member 9 is made elastic so that the contact piece 9C is reliably brought into contact with the clamping portion 7A of the ground terminal 71 in a state where tension is applied. It can be brought into contact with the sandwiching portion 7A (the ground terminal 71).

  FIG. 7 is a partial cross-sectional view (corresponding to the AA cross section in FIG. 1) of the liquid crystal display device showing the third embodiment of the present invention. The liquid crystal display device in this embodiment does not include a conducting member. In addition, the same code | symbol is attached | subjected about the same or an equivalent location as the said 1st Embodiment, and detailed description is abbreviate | omitted.

  The liquid crystal display device includes a liquid crystal display panel 1, a light guide member 2, an optical film 3 disposed between the liquid crystal display panel 1 and the light guide member 2, a cell case 4 in which these are held, and the cell. A circuit board 5 disposed behind the case 4 and mounted with a light emitting diode 6 and the like, a terminal 7 as a conductive connecting member connecting the liquid crystal display panel 1 and the circuit board 5, and a peripheral portion of the liquid crystal display panel 1 A display plate 8 as a front plate to cover, a turning member 11 and the like are provided.

  The terminal 7 is made of metal such as phosphor bronze or stainless steel, and has a sandwiching portion 7A and a lead portion 7B having a substantially U-shaped cross section. The edge of the rear glass substrate 1B of the liquid crystal display element 1 is sandwiched between the sandwiching portion 7A and is electrically connected to the electrode portion as described above, and the lower end of the lead portion 7B is a circuit formed on the circuit substrate 5. Soldered (connected). There are eight terminals 7 in total, but one of them is a ground terminal 71 (ground part), which is different in shape from the other seven terminals 7. As shown in FIG. 7, a terminal contact piece 7AA as an elastic contact piece extending toward the center side of the liquid crystal display panel 1 is provided in the sandwiching portion 7A of the ground terminal 71. This terminal contact piece 7AA is slightly bent toward the display board 8 side.

  A method of assembling the liquid crystal display device in this embodiment will be described. As in the first embodiment, the circuit board 5 is assembled to the back side of the cell case 4. Thereafter, the liquid crystal display panel 1 to which the light guide member 2, the optical film 3, and the terminal 7 are fixed is sequentially placed on the placement portion 4 </ b> A of the cell case 4, and the edge of the liquid crystal display panel 1 is provided on the cell case 4. The locking piece (not shown) is locked. Of the terminals fixed to the liquid crystal display panel 1, the ground terminal 71 is provided with the terminal contact piece 7AA as described above.

  Next, the display board 8 is disposed on the peripheral wall 4 </ b> B of the cell case 4. Thereby, in this embodiment, the back surface of the display board 8 and the terminal contact piece 7AA of the ground terminal 71 come into contact with each other. At this time, since the terminal contact piece 7AA has elasticity, a tension is applied to the display panel 8. Thereafter, the facing member 11 is assembled (attached) to the cell case 4 with a hook or the like (not shown). By attaching the facing member 11 to the cell case 4, even if the display board 8 is about to float, the peripheral edge of the display board 8 can be pressed to prevent the display board 8 from rising, and the back surface of the display board 8 can be prevented. And the terminal contact piece 7AA of the ground terminal 71 are reliably in contact with each other.

  With this configuration, it is possible to release the static electricity to be charged on the display board 8 and the like to the ground circuit of the circuit board 5 through the ground terminal 71, and the liquid crystal display panel as in the first embodiment. Thus, it is possible to obtain a liquid crystal display device having an antistatic structure in which an erroneous display due to static electricity hardly occurs. In addition, the display plate 8 and the ground terminal 71 are brought into direct contact without using the conducting member as in each of the above embodiments, thereby reducing the cost.

  Further, by providing a terminal contact piece 7AA having elasticity to the ground terminal 71 so as to contact the display board 8 in a state where tension is always applied, the display board 8 and the terminal contact piece 7AA (ground terminal 71) and Can be reliably contacted.

  In the present embodiment, the liquid crystal display device is provided with a display plate. However, a liquid crystal display device without a display plate may be used. In this case, a terminal contact piece between the turning member 11 and the ground terminal 71 is used. What is necessary is just to make 7AA contact.

  FIG. 8 is a partial cross-sectional view (corresponding to the AA cross section in FIG. 1) of the liquid crystal display device showing the fourth embodiment of the present invention. The liquid crystal display device in this embodiment does not include a conducting member. In addition, the same code | symbol is attached | subjected about the same or equivalent part as each said embodiment, and detailed description is abbreviate | omitted.

  The liquid crystal display device includes a liquid crystal display panel 1, a light guide member 2, an optical film 3 disposed between the liquid crystal display panel 1 and the light guide member 2, a cell case 4 in which these are held, and the cell. A circuit board 5 disposed behind the case 4 and mounted with a light emitting diode 6 and the like, a terminal 7 as a conductive connecting member connecting the liquid crystal display panel 1 and the circuit board 5, and a peripheral portion of the liquid crystal display panel 1 A display plate 8 as a front plate to cover, a turning member 11 and the like are provided.

  The terminal 7 is made of metal such as phosphor bronze or stainless steel, and has a sandwiching portion 7A and a lead portion 7B having a substantially U-shaped cross section. There are eight terminals 7 in total, and the shapes are all the same, but one of them is a ground terminal 71 (ground part).

  Although not shown in the drawing, the display panel 8 includes an opening window 8B that allows the visible region of the liquid crystal display panel 1 to be visually recognized, and a notification display unit 8A, and covers the peripheral portion of the liquid crystal display panel 1. It is arranged on the peripheral wall 4 </ b> B of the cell case 4. Further, as shown in FIG. 8, the display board 8 is provided with a display board contact piece 8 </ b> C as an elastic contact piece extending in the direction of the sandwiching portion 7 </ b> A of the ground terminal 71. The display plate contact piece 8C is slightly bent toward the holding portion 7A side of the ground terminal 71.

  A method of assembling the liquid crystal display device in this embodiment will be described. As in the first embodiment, the circuit board 5 is assembled to the back side of the cell case 4. Thereafter, the liquid crystal display panel 1 to which the light guide member 2, the optical film 3, and the terminal 7 are fixed is sequentially placed on the placement portion 4 </ b> A of the cell case 4, and the edge of the liquid crystal display panel 1 is provided on the cell case 4. The locking piece (not shown) is locked.

  Next, the display board 8 is disposed on the peripheral wall 4 </ b> B of the cell case 4. As a result, in this embodiment, the display plate contact piece 8C of the display plate 8 and the clamping portion 7A of the ground terminal 71 come into contact with each other. At this time, since the display plate contact piece 8C has elasticity, a tension is applied to the sandwiching portion 7A. Thereafter, the facing member 11 is assembled (attached) to the cell case 4 with a hook or the like. By attaching the facing member 11 to the cell case 4, even if the display plate 8 is about to float, the peripheral edge of the display plate 8 can be pressed to prevent the lift.

  With this configuration, it is possible to release static electricity to be charged on the display board 8 and the like to the ground circuit of the circuit board 5 through the ground terminal 71, and the liquid crystal display panel 1 as in the above embodiments. Thus, a liquid crystal display device having an antistatic structure in which erroneous display due to static electricity hardly occurs can be obtained. Further, since the display plate 8 and the ground terminal 71 are brought into direct contact without using a conductive member, the cost can be reduced.

  Further, the display plate contact piece 8C having elasticity is provided on the display plate 8 so that the display plate 8 and the holding portion 7A (grounding) are in contact with the holding portion 7A of the ground terminal 71 in a state where tension is always applied. The terminal 71) can be reliably brought into contact.

  In the present embodiment, the liquid crystal display device is provided with a display plate. However, a liquid crystal display device without a display plate may be used. The contact piece and the clamping portion 7A of the ground terminal 71 may be brought into contact with each other.

  In the first, second, and fourth embodiments described above, all the terminals 7 have the same structure, and one of them is the ground terminal 71 (ground part), but the ground terminal 71 (ground part). Can use a dedicated connection member having a different arrangement position, structure, and material from the other terminals 7. Similarly, even in the ground terminal 71 (ground portion) applied to the third embodiment, it is not always necessary to provide a common portion with other terminals 7, and both the liquid crystal panel 1 and the front plate such as the display plate 8 are provided. Any structure and material can be selected as long as they are contact members.

  In each of the above embodiments, the metal terminal 7 is used as the connecting member. However, for example, an FPC may be used. In that case, what is necessary is just to comprise so that the conduction | electrical_connection member 9 or the display board 8 demonstrated in the said each embodiment may be made to contact the earth circuit (earth | ground part) formed in FPC. Alternatively, only the ground terminal 71 (ground part) may be made of metal, and the other terminals may have any structure or material.

The front view of the liquid crystal display device which shows 1st Embodiment of this invention. Sectional drawing (the AA cross section in FIG. 1) of the liquid crystal display device. The fragmentary sectional view of the liquid crystal display device (BB cross section in FIG. 1). The front view of the conduction | electrical_connection member used for the liquid crystal display device. Sectional drawing of the liquid crystal display device which shows 2nd Embodiment of this invention (equivalent to the AA cross section in FIG. 1). The back view which shows the state which mounted | wore the front plate with the conduction | electrical_connection member used for the liquid crystal display device. FIG. 6 is a partial cross-sectional view of a liquid crystal display device showing a third embodiment of the present invention (corresponding to the AA cross section in FIG. 1). FIG. 6 is a partial cross-sectional view of a liquid crystal display device showing a fourth embodiment of the present invention (corresponding to the AA cross section in FIG. 1).

Explanation of symbols

1 Liquid Crystal Display Panel 4 Cell Case 5 Circuit Board 6 Light Emitting Diode (Light Source)
7 Terminal (connection member)
7A Clamping part 7AA Terminal contact piece 71 Ground terminal (ground part)
8 Display board (front panel)
8C Display board contact piece 9 Conductive member 9C Contact piece 11 Turning member

Claims (7)

  A liquid crystal display panel, a cell case holding the liquid crystal display panel, a circuit board disposed behind the liquid crystal display panel, a conductive connecting member connecting the liquid crystal display panel and the circuit board, In a liquid crystal display device including a front plate that covers a peripheral portion of the liquid crystal display panel, a conductive member that contacts the front plate and a ground portion of the connection member is provided between the front plate and the liquid crystal display panel. A liquid crystal display device characterized by being disposed between.   The liquid crystal display device according to claim 1, wherein the conductive member is partially brought into contact with the front plate.   The liquid crystal display device according to claim 1, wherein the conductive member is provided with a contact piece having elasticity that comes into contact with the ground portion.   The liquid crystal display device according to claim 1, wherein the conductive member is attached to the cell case.   The liquid crystal display device according to claim 1, wherein the conductive member is attached to the front plate.   A liquid crystal display panel, a cell case holding the liquid crystal display panel, a circuit board disposed behind the liquid crystal display panel, a conductive connecting member connecting the liquid crystal display panel and the circuit board, A liquid crystal display device comprising a front plate covering a peripheral portion of the liquid crystal display panel, wherein the front plate and the ground portion of the connecting member are brought into contact with each other.   The liquid crystal display device according to claim 6, wherein a contact piece having elasticity that contacts the other is provided on one of the front plate and the ground portion.

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