JP2012068301A - Display device, and television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device and a television receiver for enhancing countermeasures against electromagnetic wave noise.SOLUTION: The display device includes: a display panel 11 on which an image is displayed; an illuminator 30 irradiating the display panel 11 with light; and a conductive holding member 40 integrally holding the display panel 11 and the illuminator 30. A control substrate 20 controlling the drive of the display panel 11 is connected to the display panel 11. On the control substrate 20, a ground pattern 22, an opening 21 penetrating in the thickness direction of the control substrate 20, and a contact part 50 engaged with the opening 21 and connecting the ground pattern 22 with the holding member 40 are formed. The contact part 50 includes a first contact part 56 contacting with the ground pattern 22 formed on the control substrate 20, and a second contact part 57 contacting with the holding member 40.

Description

  The present invention relates to a display device and a television receiver.

  A digital apparatus such as a television, a mobile phone, or a computer uses a display device that includes a display panel that displays an image. As an example of such a display device, a display device including a display panel and an illumination device that emits light to the display panel is known (for example, Patent Document 1). The display panel and the lighting device are integrally held by a metal bezel or the like. The lighting device includes a light source and a housing that houses the light source, and a control board that controls driving of the display panel is connected to the display panel. The control board is disposed along the outer periphery of the display panel, and is fixed to the side surface of the housing with screws or the like.

  In such a display device, harmonics of the digital signal are radiated into the air as electromagnetic wave noise through the pattern on the control board, and there is a concern that this electromagnetic wave may affect the operation of other electronic devices. Therefore, for example, countermeasures against electromagnetic noise as described in Patent Document 2 may be taken. This countermeasure against electromagnetic wave noise is a method of strengthening the ground of the control board and reducing electromagnetic noise by attaching a gasket (conductive seal) to the ground pattern provided on the control board and attaching the bezel to this gasket. is there.

Japanese Patent Laid-Open No. 2007-222068 JP 2002-107696 A

  When taking countermeasures against electromagnetic noise as described above, it is necessary to use a gasket having a relatively large thickness in order to ensure that the gasket is in close contact with both sides of the bezel and the control board. However, a gasket having a large thickness is likely to come off when the bezel is assembled, and there is a problem in that the sticking condition is likely to vary, which may result in insufficient contact between the ground pattern of the control board and the bezel. There is. If these contacts are insufficient, the electromagnetic noise cannot be reduced sufficiently, and there has been a desire to strengthen the countermeasure against electromagnetic noise in order to avoid such a situation.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to provide a display device and a television receiver capable of strengthening countermeasures against electromagnetic noise.

  The display device of the present invention includes a display panel on which an image is displayed, a lighting device that irradiates light to the display panel, and a conductive holding member that integrally holds the display panel and the lighting device. A control board for controlling the driving of the display panel is connected to the display panel. The control board has a ground pattern, an opening penetrating in the thickness direction of the control board, and the opening. And a contact portion that connects the ground pattern and the holding member is formed, and the contact portion contacts the ground pattern formed on the control board and the holding portion. And a second contact portion that contacts the member.

  According to such a configuration, the ground pattern of the control board and the conductive holding member are conductively connected via the contact portion. Therefore, since the ground of the control board can be strengthened without using a gasket having a large thickness, it is possible to strengthen countermeasures against electromagnetic noise.

Further, the ground pattern has a connection portion formed on the inner wall surface of the opening.
The first contact portion may be provided so as to protrude from a side surface of the contact portion and contact the connection portion.
The lighting device includes a plurality of light sources and a housing that accommodates the light sources, the control board is disposed along a wall surface of the housing, and the holding member is provided on the control board. It has a cover part located on the opposite side to the housing, and the second contact part may be provided at an end of the contact part on the opposite side to the case to contact the cover part. .

The contact portion may include a housing locking portion that locks the housing, and the control board may be fixed to the housing. According to such a configuration, the contact portion that electrically connects the ground pattern of the control board and the holding member also serves as a fixing member that fixes the control board to the housing. The increase in the score can be prevented.
Further, a through-hole is formed in the housing at a position corresponding to the opening, the contact portion is inserted into the opening and the through-hole, and the housing locking portion is It is good also as what latches from the opposite side to the side by which the said control board is arrange | positioned with respect to the peripheral part of the said through-hole.

The contact portion is inserted from the control board side toward the housing side, and the housing locking portion is gradually moved from the front side to the rear side in the insertion direction of the contact portion. It is good also as what protrudes in the direction and the rear end latches on the peripheral part of the said through-hole. According to such a configuration, the contact portion can be easily inserted.
The contact portion is locked from the side where the control board is disposed with respect to the peripheral portion of the through-hole, and the peripheral portion of the through-hole is sandwiched between the contact portion and the case locking portion. It is good also as what has a clamping part. According to such a configuration, the contact portion is less likely to be rattled with respect to the housing, which can be advantageous for vibration and the like.

The contact portion is inserted from the control board side toward the housing side, and the opening portion is formed to have an opening area larger than the through-hole, and the opening portion of the contact portion is the opening portion. A part of the main body that fits into the housing may constitute the housing holding portion.
The contact portion is inserted from the housing side toward the control board side, and the housing holding portion protrudes from a side surface of the contact portion, and a surface thereof is a curved surface. It is good as it is. According to such a structure, since the housing | casing clamping part cannot be easily caught in a through-hole, a contact part can be inserted smoothly.

The contact portion is inserted from the housing side toward the control board side, and the housing clamping portion protrudes sideways little by little from the front in the insertion direction of the contact portion to the rear. The rear end may be engaged with the peripheral edge of the through hole. According to such a structure, since the housing | casing clamping part cannot be easily caught in a through-hole, a contact part can be inserted smoothly.
The contact portion may include a substrate locking portion that locks the peripheral edge of the opening from the side opposite to the housing. According to such a configuration, the displacement of the control board to the side opposite to the casing can be restricted.

  Further, the contact portion is inserted from the housing side toward the control board side, and the substrate locking portion is slightly laterally directed from the front side to the rear side in the insertion direction of the contact portion. It is good also as what protrudes in this and a rear end latches on the peripheral part of the said opening part. According to such a configuration, since the board locking portion is not easily caught when the contact portion is inserted, the contact portion can be smoothly inserted.

The second contact portion may be in elastic contact with the holding member.
The second contact portion may be formed by cutting and raising a part of the contact portion toward the holding member so as to be elastically deformable in a contact direction with the holding member.
The contact portion has a cylindrical shape, and an elastic member that is elastically deformable in the axial direction is accommodated in the contact portion, and a piston portion is provided on one end side in the axial direction of the elastic member. The second contact portion may be provided on the piston portion and contact the holding member in a state where the elastic member is elastically contracted.
The second contact portion may be provided at the tip of the piston portion and have a sharp shape in a contact direction with the holding member.

Further, at least the second contact portion of the contact portion may be made of a shape memory alloy. According to such a configuration, even when the second contact portion is deformed when the display device is assembled, it can be restored to the original shape by heating.
The second contact portion may have a pointed shape in a contact direction with the holding member.

Moreover, the part located in the said through-hole among the said contact parts is good also as what has a width dimension equivalent to the width dimension of the said through-hole. According to such a configuration, the contact portion is less likely to be rattled with respect to the housing, which can be advantageous for vibration and the like.
Further, the distal end portion in the insertion direction of the contact portion may have a tapered shape whose width dimension decreases toward the tip. According to such a structure, the fitting operation | work of a contact part can be performed smoothly.

The first contact portion may be provided at a position that equally divides the contact portion in the circumferential direction.
Moreover, the said housing | casing latching | locking part is good also as what is provided in the position which equally divides the said contact part in the circumferential direction.
Moreover, the said housing clamping part is good also as what is provided in the position which equally divides the said contact part in the circumferential direction.
Moreover, the said board | substrate latching | locking part is good also as what is provided in the position which equally divides the said contact part in the circumferential direction.
The display panel may be a liquid crystal panel using liquid crystal.
The television receiver of the present invention includes the display device.

  ADVANTAGE OF THE INVENTION According to this invention, the display apparatus and television receiver which can strengthen electromagnetic wave noise countermeasure can be provided.

1 is an exploded perspective view showing a schematic configuration of a television receiver according to Embodiment 1. FIG. Exploded perspective view showing schematic configuration of liquid crystal display device The top view which shows the liquid crystal panel of the state arrange | positioned at the front side of a housing | casing Partially enlarged perspective view of the liquid crystal display device showing a state before the driver board is attached to the housing Partially enlarged perspective view of the liquid crystal display device showing a state before the contact portion is fitted into the opening Partially enlarged perspective view of the liquid crystal display device showing a state after the contact portion is fitted into the opening Partially enlarged side view of the liquid crystal display device showing a state before the driver board is attached to the housing Partially enlarged side view of the liquid crystal display device showing a state before and after the contact portion is fitted into the opening Partially enlarged sectional view of the liquid crystal display device showing a state in which the second contact portion of the contact portion is in contact with the bezel FIG. 9 is a partially enlarged cross-sectional view of the liquid crystal display device showing a state in which the first contact portion of the contact portion is in contact with the ground pattern of the driver substrate and the second contact portion is in contact with the bezel, at a position AA in FIG. 9. Cross-sectional view corresponding to the cross-section The partial expanded sectional view of the liquid crystal display device which shows the state which the 2nd contact part of the contact part concerning Embodiment 2 contacted the bezel FIG. 12 is a partially enlarged cross-sectional view of the liquid crystal display device showing a state in which the substrate locking portion of the contact portion is locked to the peripheral edge portion of the opening, and is a cross-sectional view corresponding to a cross section at the position BB in FIG. External appearance perspective view which shows schematic structure of the contact part concerning Embodiment 3. FIG. Partially enlarged side view of the liquid crystal display device showing a state in which the contact portion is inserted into the opening and the through hole FIG. 15 is a partially enlarged cross-sectional view of the liquid crystal display device showing a state in which the first contact portion of the contact portion is in contact with the ground pattern of the driver substrate, and is a cross-sectional view corresponding to a cross-section at the position CC in FIG. FIG. 15 is a partially enlarged cross-sectional view of the liquid crystal display device showing a state in which the housing holding portion of the contact portion is locked to the peripheral edge portion of the through-hole, and is a cross-sectional view corresponding to a cross section at the position DD in FIG. External appearance perspective view which shows schematic structure of contact part concerning Embodiment 4. FIG. Partially enlarged sectional view of the liquid crystal display device showing a state in which the housing holding portion of the contact portion is locked to the peripheral edge portion of the through hole External appearance perspective view which shows schematic structure of contact part concerning Embodiment 5. FIG. Partially enlarged sectional view of the liquid crystal display device showing a state in which the substrate locking portion of the contact portion is locked to the peripheral edge portion of the opening portion External appearance perspective view which shows schematic structure of contact part concerning Embodiment 6. FIG. Side sectional view showing schematic configuration of contact part Partially enlarged sectional view of the liquid crystal display device showing a state in which the second contact portion of the contact portion is in elastic contact with the bezel Side view showing a schematic configuration of a contact portion according to another embodiment (7) The partially expanded sectional view of the liquid crystal display device which shows the state which the 2nd contact part of the contact part concerning other embodiment (8) contacted the bezel FIG. 26 is a partially enlarged cross-sectional view of the liquid crystal display device showing a state in which the housing locking portion of the contact portion is locked to the housing, and is a cross-sectional view corresponding to a cross section at the position EE in FIG. The partially expanded sectional view of the liquid crystal display device which shows the state which the board | substrate latching | locking part of the contact part concerning other embodiment (9) latched to the peripheral part of the opening part

<Embodiment 1>
Hereinafter, Embodiment 1 which actualized this invention is demonstrated in detail, referring FIGS. 1-10. In the present embodiment, a television receiver TV including the liquid crystal display device 10 (display device) is illustrated. As shown in FIG. 1, the television receiver TV includes a liquid crystal display device 10, cabinets Ca and Cb that accommodate the liquid crystal display device 10 sandwiched from the front and back, a power source P, a tuner T for receiving television broadcasts, and the like. And a stand S. The liquid crystal display device 10 is accommodated in the cabinets Ca and Cb in a vertically placed posture with the display surface 11A directed in a substantially vertical direction. Hereinafter, in each component member, the lower left side (front side of the television receiver TV, the display surface 11A side) in FIG. In the drawing, the front side is shown as the Z-axis positive direction, the upper side is shown as the Y-axis positive direction, and the right side toward the television receiver TV is shown as the X-axis positive direction.

  The liquid crystal display device 10 has a horizontally long rectangular shape as a whole and can display an image, and a backlight device (illumination device) that is an external light source that emits light toward the liquid crystal panel 11. 30 and these are integrally held by a bezel (holding member) 40 or the like (see FIG. 2).

  The liquid crystal panel 11 is interposed between a pair of transparent (translucent) glass substrates 12 and 13 having a horizontally long rectangular shape, and both the substrates 12 and 13, and has optical characteristics as voltage is applied. A changing liquid crystal layer (not shown). Both substrates 12 and 13 are CF substrate 12 on the front side and array substrate 13 on the back side.

  The array substrate 13 is provided with switching elements (for example, TFTs) connected to mutually orthogonal source wirings and gate wirings, pixel electrodes connected to the switching elements, and the like. And a color filter in which colored portions such as R, G, and B are arranged in a predetermined arrangement.

  The array substrate 13 is formed in a shape that is slightly larger than the CF substrate 12, and a terminal portion (not shown) connected to an external circuit is formed on an edge portion of the peripheral portion that protrudes outward from the peripheral edge of the CF substrate 12. ) Is provided. A pair of front and back polarizing plates (not shown) are disposed on the outer surface sides of the substrates 12 and 13, respectively.

  As shown in FIG. 3, a plurality (three in this embodiment) of driver boards (control boards) 20 are arranged around the liquid crystal panel 11. The driver board 20 and the liquid crystal panel 11 include a plurality of flexible boards. 14 is connected.

  The flexible substrate 14 is formed by mounting a semiconductor chip that functions as a liquid crystal driver integrated circuit while a wiring pattern (not shown) is printed on a thin film base material having flexibility. As the flexible substrate 14, TCP (Tape Carrier Package), COF (Chip On Film), SOF (System On Film), or the like is used.

  The driver board 20 is made of synthetic resin and has a substantially rectangular plate shape elongated in one direction, and electric parts (not shown) such as capacitors and resistors are mounted on the board surface and a wiring pattern (not shown). ) Is printed.

  Driver board 20 is arranged along the edge in which the terminal part was provided among the peripheral parts of liquid crystal panel 11 (array substrate 13). Specifically, two driver boards 20 are provided along the lower side of the pair of long sides of the liquid crystal panel 11, and one is provided along the right side of the pair of short sides toward the display surface 11A. (See FIG. 3).

  The driver substrate 20 controls the driving of the liquid crystal panel 11, and supplies a gate signal for driving the liquid crystal panel 11 via the flexible substrate 14 to the liquid crystal panel 11 or the liquid crystal panel 11. 2 is a source driver board that supplies a source signal for driving to the liquid crystal panel 11.

  The driver board 20 is disposed at a position spaced apart from the liquid crystal panel 11 in a posture in which its plate surface is substantially perpendicular to the display surface 11A of the liquid crystal panel 11, and is attached to the casing 32 of the backlight device 30. (See FIG. 6).

  The backlight device 30 is a so-called direct-type backlight device, and is provided immediately below the back surface of the liquid crystal panel 11. The backlight device 30 includes a plurality of fluorescent lamps (light sources) 31 and a housing 32 that accommodates the fluorescent lamps 31 (see FIG. 2). The housing 32 has a plate-like bottom member 33 and a wall member 34 that rises from the periphery of the bottom member 33 to the front side, and has a shallow, substantially box shape that opens on the front side as a whole.

  The bottom member 33 is made of metal and has a substantially rectangular shape that is long in one direction, and the fluorescent lamps 31 are arranged in parallel on the surface of the bottom member 33. The fluorescent lamp 31 has an elongated tubular shape, and is arranged in a state in which the length direction (axial direction) thereof coincides with the longitudinal direction of the bottom member 33 and a plurality of lamps are arranged substantially parallel to each other (FIG. 9). reference).

  The wall member 34 is formed by molding a resin material, and has a substantially rectangular frame shape that is long in one direction as a whole. The wall member 34 includes a wall plate 35 that rises to the front side along the periphery of the bottom member 33, and a ceiling plate 36 that protrudes inward from the rising edge of the wall plate 35 over the entire circumference (FIG. 3). reference).

  The plate surface of the ceiling plate 36 is substantially parallel to the bottom member 33, and the width dimension of the ceiling plate 36 (projection dimension from the wall plate 35) is substantially constant throughout. The peripheral edge of the liquid crystal panel 11 is placed on the front surface of the ceiling plate 36.

  The wall plate 35 has a height dimension (rising dimension from the bottom member 33) in the front and back direction substantially constant throughout. The wall plate 35 is substantially perpendicular to the plate surface of the bottom member 33, and the driver substrate 20 is attached to the housing 32 in a posture in which the plate surface is along the wall surface of the wall plate 35 (see FIG. 9). ).

  The liquid crystal panel 11 is placed on the front side of the ceiling plate 36 of the housing 32 via a buffer member 41 made of an elastic material (such as a rubber material or a foamed resin material). The liquid crystal panel 11 is held integrally with the backlight device 30 by sandwiching a peripheral portion between the bezel 40 made of a frame-shaped metal member and the casing 32 (ceiling plate 36) of the backlight device 30. . A buffer member 41 is also interposed between the liquid crystal panel 11 and the bezel 40 (see FIG. 9).

  The bezel 40 is made of metal and has a frame part 42 that covers the front side of the peripheral part of the liquid crystal panel 11, and a cover part 43 that hangs down from the outer peripheral edge of the frame part 42 to the back side and reaches the side surface of the housing 32. ing. The frame portion 42 is substantially parallel to the ceiling plate 36 of the housing 32, and the cover portion 43 is substantially parallel to the wall plate 35 of the housing 32. The cover 43 has a dimension that can cover most of the wall plate 35 of the housing 32, and is located on the opposite side of the driver substrate 20 from the housing 32, and covers the entire outside of the driver substrate 20. Covering.

  Now, as shown in FIG. 7, the driver substrate 20 has an opening 21 that penetrates the driver substrate 20 in the thickness direction. The openings 21 are formed at both ends of each driver board 20 in the longitudinal direction. Each opening 21 has a substantially rectangular shape that is long in the short direction of the driver board 20, and its four corners 21 </ b> A are formed in an arc shape. The pair of openings 21 formed in one driver substrate 20 have substantially the same shape and the same size, and are symmetrical with respect to the center line in the longitudinal direction of the driver substrate 20.

  A ground pattern 22 is formed on the driver substrate 20. The ground pattern 22 is formed at both ends in the longitudinal direction of the driver substrate 20 and at the peripheral edge of each opening 21. Specifically, the ground pattern 22 is formed from one surface (the surface disposed on the side opposite to the housing 32) of the front and back surfaces of the driver substrate 20 to the inner wall surface 23 of the opening that forms the opening 21 ( (See FIG. 10). A portion of the ground pattern 22 formed on the inner wall surface 23 of the opening 21 is referred to as a connection portion 22A.

  The ground pattern 22 is formed so as to spread from the central portion in the longitudinal direction of the opening 21 to both sides, and is symmetrical with respect to the opening 21. Each of the ground patterns 22 formed on both sides of the opening 21 has a rectangular shape that is long in the longitudinal direction of the driver board 20, and the width dimension thereof is substantially constant throughout the connection portion 22A. The width dimension of the ground pattern 22 (connecting portion 22A) is a dimension that occupies most of the linear portion 21B among the long sides of the opening 21. 22 A of connection parts are formed only in the long side linear part 21B among the whole inner wall surfaces 23 of the opening part 21. As shown in FIG.

  A through hole 37 is formed in the housing 32 at a position corresponding to the opening 21 of the driver board 20 (see FIG. 7). Specifically, the through-hole 37 is provided one at a position corresponding to the longitudinal end of each driver board 20 in the wall member 34 of the housing 32, that is, in the long side wall 34A, two driver boards 20 are provided. The short side wall portion 34B is provided at one of four locations corresponding to both ends of the driver board 20 and one at two locations corresponding to both ends of the driver board 20. Each through-hole 37 is formed at a position corresponding to a central portion of each opening 21 in the longitudinal direction, that is, a portion of the opening 21 where the ground pattern 22 is formed.

  Each through-hole 37 is formed to penetrate the wall plate 35 of the wall member 34 in the wall thickness direction, has a substantially long rectangular shape in the circumferential direction of the wall member 34, and the four corners 37A are formed in an arc shape. Yes. The opening area of the through hole 37 is smaller than the opening area of the opening 21. The opening dimension in the longitudinal direction of the through hole 37 is equivalent to the opening dimension in the short direction of the opening part 21, and the opening dimension in the short direction of the through hole 37 is smaller than the opening dimension in the longitudinal direction of the opening part 21. The width dimension of the ground pattern 22 (about half) is equivalent. In a state where the driver substrate 20 is placed along the wall plate 35 of the housing 32, a part of the peripheral edge portion of the through-hole 37 is located inside the opening portion 21 and closes both ends in the longitudinal direction of the opening portion 21. (See FIG. 8). At this time, the entire through-hole 37 is open to the inside of the housing 32 through the opening 21. Of the peripheral edge of the through hole 37, the part that closes the opening 21 is a part that is located on both the front and back sides of the through hole 37. It becomes.

  A contact portion 50 that connects the ground pattern 22 and the bezel 40 is fitted in the opening portion 21 of the driver substrate 20. As shown in FIG. 5, the contact portion 50 is a leaf spring formed by folding a metal plate material into a U shape, and a pair of opposing portions 51 arranged opposite to each other and one ends of the opposing portions 51. The pair of facing portions 51 are elastically deformable in the approaching and separating directions. In addition, as a metal material, stainless steel (SUS), an aluminum alloy (5000 series, 1000 series, etc.), a copper alloy (beryllium copper, etc.), a steel plate, etc. can be used, for example.

  The contact portion 50 has a direction in which the facing direction of the pair of facing portions 51 coincides with the short side direction of the opening portion 21 (direction in which each facing portion 51 faces the ground pattern 22), and from the driver substrate 20 side to the housing 32 side. It is inserted from the opening 21 side toward the through hole 37 side. As shown in FIG. 9, the contact portion 50 has a length dimension that is larger than the dimension obtained by adding the thickness dimension of the driver substrate 20 and the thickness dimension of the wall plate 35 of the casing 32. In the fixed state, both ends in the longitudinal direction protrude to the inside of the housing 32 and the outside of the driver board 20, respectively.

  The contact part 50 has a main body part 53 located in the opening part 21 of the driver substrate 20 and a leg part 54 located in the through hole 37 of the housing 32. The contact portion 50 is inserted from the opening portion 21 to the through-opening 37 side in a posture in which the leg portion 54 is directed toward the tip in the insertion direction.

  When the main body 53 is viewed from the side (opposite direction of the opposing portion 51), the main body 53 has a rectangular shape that is long in one direction, and the size in the longitudinal direction is the same as the opening size of the long side of the opening 21. Yes. Both end portions in the longitudinal direction of the main body 53 are in contact with the contact portion 38 on the peripheral edge of the through-hole 37 from the side where the driver board 20 is disposed, and between the housing locking portion 58 described later. A housing sandwiching portion 55 that sandwiches the peripheral edge of the through-hole 37 is configured. The dimension of the main body 53 in the short direction is larger than the thickness dimension of the driver board 20. In a state where the contact part 50 is fitted in the opening part 21, the main body part 53 protrudes outside the driver substrate 20. The connecting portion 52 of the contact portion 50 is disposed close to the arrangement position of the cover portion 43 of the bezel 40. Specifically, the connecting portion 52 is disposed at a position closer to the cover 43 side than the intermediate position in the interval between the driver board 20 and the cover 43 of the bezel 40.

The leg part 54 protrudes from the center part of the long side of the main-body part 53, The width dimension is a dimension equivalent to the length dimension of the part (straight part 37B) except the corner | angular part 37A among the short sides of the through-opening 37. Has been.
The connecting portion 52 has a rectangular shape, the long side is the same size as the length of the main body 53, and the short side is the same size as the length of the through hole 37. .

  The contact portion 50 has a first contact portion 56 that elastically contacts the connection portion 22A of the ground pattern 22 formed on the driver substrate 20. As shown in FIG. 10, the first contact portion 56 is provided in the main body portion 53, and more specifically, is formed at a central position in the longitudinal direction of the main body portion 53 and closer to the leg portion 54. The first contact portion 56 is formed by knocking a part of the main body portion 53 outward, and is long in the width direction of the main body portion 53 when the first contact portion 56 is viewed from the side (opposite direction of the opposed portion 51). It has an oval shape. The longitudinal dimension of the first contact portion 56 is equal to the width dimension of the leg portion 54 and is equal to or slightly smaller than the width dimension of the ground pattern 22 (see FIG. 8). The cross-sectional shape seen from the longitudinal direction of the main body 53 is a semicircular shape (see FIG. 10). The projecting dimension of the first contact part 56 from the facing part 51 is slightly smaller than the projecting dimension of the housing locking part 58. Note that the first contact portion 56 is located slightly closer to the housing 32 side than the center of the opening portion 21 in the penetrating direction when the contact portion 50 is fixed to the housing 32.

  The contact part 50 has a second contact part 57 that elastically contacts the cover part 43 of the bezel 40. As shown in FIG. 8, the second contact portion 57 is provided in the connecting portion 52 of the contact portion 50, and is formed by cutting and raising a part of the connecting portion 52 to the outside (the side opposite to the extending side of the facing portion 51). Has been. The second contact portion 57 extends in a cantilever shape from a position near one end in the longitudinal direction of the connecting portion 52 toward a position near the other end (see FIG. 9). The second contact portion 57 is formed in a mountain shape in which the protruding dimension from the connecting portion 52 gradually increases from one end side to the other end side of the connecting portion 52 and the tip portion is bent toward the connecting portion 52 side. ing. A vertex portion on the free end side of the second contact portion 57 is a contact portion 57 </ b> A that contacts the bezel 40. The second contact portion 57 is elastically deformable in a direction approaching and separating from the connecting portion 52 (contact direction with the bezel 40), and in a natural state, the contact portion 57A protrudes to the position where the bezel 40 is disposed, and the bezel When pressed by 40, it is elastically deformed in a direction in which the protruding height decreases. The contact portion 50 is attached to the housing 32 in such a direction that the base end of the second contact portion 57 is arranged on the front side and the free end is arranged on the back side.

  The contact portion 50 has a housing locking portion 58 that locks to the housing 32 (see FIG. 10). The housing locking portion 58 is formed at a position near the tip of the leg portion 54 (the end opposite to the main body portion 53). The case locking portion 58 is formed by projecting a part of the leg portion 54 outward (on the opposite side to the opposing facing portion 51) over the entire width by bending. Each housing locking portion 58 protrudes in a semicircular cross section, and the protruding end surface is a curved surface. The housing locking part 58 is formed at a position facing each other, one for each leg part 54. The housing locking part 58 is locked from the inner side (the side opposite to the side on which the driver board 20 is disposed) with respect to the peripheral part of the through hole 37, and prevents the contact part 50 from coming off from the through hole 37. .

Next, how to take countermeasures against electromagnetic wave noise in the liquid crystal display device 10 of the present embodiment will be described.
First, the driver board 20 is attached to the housing 32.
First, the driver substrate 20 is aligned and disposed along the wall plate 35 of the housing 32 so that the opening 21 of the driver substrate 20 is continuous with the outside of the through-hole 37 of the housing 32 (see FIG. 8). ). Then, as shown on the left side of FIG. 8, the through hole 37 and the peripheral edge (contact portion 38) are exposed from the opening 21. Note that the right side of FIG. 8 shows a state in which the contact portion 50 is inserted into the opening 21 and the through-hole 37.

  Next, the contact part 50 is inserted into the opening 21. Then, when the leg part 54 of the contact part 50 enters the through-hole 37 through the opening part 21 and the housing locking part 58 hits the periphery of the through-hole 37, the pair of opposing parts 51 are elastically deformed in the approaching direction. . When the contact portion 50 is continuously inserted, the main body portion 53 is fitted into the opening portion 21, and the first contact portion 56 reaches a position facing the connecting portion 22A of the grad pattern. At the same time as the housing locking portion 58 passes through the through-hole 37, the opposing portion 51 is elastically restored, the housing locking portion 58 is locked to the peripheral edge of the through-hole 37, and the first contact portion 56 is grounded. It is elastically pressed against the connecting portion 22A of the pattern 22. At this time, the main body 53 (the housing clamping portion 55) of the contact portion 50 comes into contact with the contact portion 38. Thus, the contact portion 50 is fixed to the housing 32 and the driver board 20 is attached to the housing 32.

Next, the casing 32 and the liquid crystal panel 11 are assembled together using the bezel 40.
First, the liquid crystal panel 11 is placed on the ceiling plate 36 of the housing 32, and the bezel 40 is installed on the front side. Then, as shown in FIG. 9, the cover portion 43 of the bezel 40 comes into contact with the second contact portion 57 of the contact portion 50, and the second contact portion 57 is elastically deformed toward the driver substrate 20.
Next, the bezel 40 is fixed to the housing 32 with screws or the like. Then, the bezel 40 and the housing 32 are assembled together with the cover 43 of the bezel 40 elastically contacting the second contact portion 57.

  As described above, the first contact portion 56 of the contact portion 50 is in elastic contact with the connection portion 22A of the ground pattern 22, and the second contact portion 57 is in elastic contact with the cover portion 43 of the bezel 40. The ground pattern 22 of the substrate 20 and the bezel 40 are conductively connected via the contact portion 50, and the ground of the driver substrate 20 is strengthened.

  When removing the driver board 20 from the housing 32, the contact portion 50 may be pulled out after the bezel 40 is removed. At this time, since the facing portion 51 of the contact portion 50 is elastically restored, the driver substrate 20 can be repeatedly attached to and detached from the housing 32.

According to the first embodiment configured as described above, the following effects can be obtained.
A liquid crystal panel 11 on which an image is displayed; a backlight device 30 that emits light to the liquid crystal panel 11; and a conductive bezel 40 that integrally holds the liquid crystal panel 11 and the backlight device 30; A driver board 20 that controls driving of the liquid crystal panel 11 is connected to the liquid crystal panel 11. The driver board 20 has a ground pattern 22, an opening 21 that penetrates in the thickness direction of the driver board 20, and an opening. 21, and a contact portion 50 that connects the ground pattern 22 and the bezel 40 is formed. The contact portion 50 includes a first contact portion 56 that contacts the ground pattern 22 formed on the driver substrate 20, and And a second contact portion 57 that contacts the bezel 40.

  As a result, the ground pattern 22 of the driver substrate 20 and the conductive bezel 40 are conductively connected via the contact portion 50. Accordingly, the ground of the driver board 20 can be strengthened without using a gasket having a large thickness dimension, so that countermeasures against electromagnetic noise can be strengthened.

  Further, the contact portion 50 has a housing locking portion 58 that locks the housing 32, and fixes the driver board 20 to the housing 32. As a result, the contact portion 50 that conductively connects the ground pattern 22 of the driver board 20 and the bezel 40 also serves as a fixing member that fixes the driver board 20 to the housing 32. An increase in the score can be prevented.

  Further, the contact portion 50 is locked from the side where the driver board 20 is disposed with respect to the peripheral portion of the through-hole 37, and the housing is sandwiched between the peripheral portion of the through-hole 37 and the housing engaging portion 58. A portion 55 is provided. Thereby, since the contact part 50 does not rattle easily with respect to the housing | casing 32, it can be made advantageous with respect to a vibration.

  In addition, the leg portion 54 located in the through hole 37 of the contact portion 50 has a width dimension equivalent to the width dimension of the through hole 37. Thereby, since the contact part 50 does not rattle easily with respect to the housing | casing 32, it can be made advantageous with respect to a vibration.

<Embodiment 2>
Next, a liquid crystal display device 10 according to a second embodiment embodying the present invention will be described with reference to FIGS.
In the liquid crystal display device 10 of the present embodiment, the contact portion 50 has a substrate locking portion 60 that locks the peripheral portion of the opening 21 from the outside (the side opposite to the housing 32). This is different from the first embodiment. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and the overlapping description is abbreviate | omitted.

  The liquid crystal display device 10 according to the present embodiment includes the liquid crystal panel 11 and the backlight device 30 as in the first embodiment, and these are integrally held by a bezel 40 or the like, A plurality of driver boards 20 are disposed around the liquid crystal panel 11, and the driver board 20 and the liquid crystal panel 11 are connected via a plurality of flexible boards 14. Further, as in the first embodiment, the driver board 20 has an opening 21 and a ground pattern 22, and the housing 32 has a through hole 37.

  As in the first embodiment, a contact portion 50 that connects the ground pattern 22 and the bezel 40 is fitted in the opening 21 of the driver substrate 20. Similar to the first embodiment, the contact portion 50 includes a pair of facing portions 51 and a connecting portion 52, and includes a main body portion 53 located in the opening portion 21 and a leg portion 54 located in the through hole 37. ing. Similarly to the first embodiment, the contact portion 50 is in contact with the first contact portion 56 that elastically contacts the connection portion 22 </ b> A of the ground pattern 22 formed on the driver substrate 20 and the cover portion 43 of the bezel 40. A second contact portion 57 that makes elastic contact with the housing 32 and a housing locking portion 58 that locks the housing 32.

  In addition, the contact portion 50 of the present embodiment has a substrate locking portion 60 that locks from the outside (the side opposite to the housing 32) with respect to the peripheral edge of the opening 21. The board locking portion 60 is provided at an end portion of the main body portion 53 on the connecting portion 52 side, and protrudes outward from the main body portion 53 (on the opposite side to the opposing facing portion 51) as shown in FIG. . The board locking portion 60 faces the peripheral edge of the opening 21 at a position outside the driver board 20. The board locking portion 60 is formed by bending the end portion of the main body portion 53 so as to form a U-shaped cross section over the entire width. Specifically, the board locking portion 60 includes a pair of protruding portions 61 that rise substantially perpendicular to the main body portion 53 and a protruding end portion 62 that connects the protruding ends of the protruding portions 61. Are substantially parallel, and the projecting portion 61 and the projecting end portion 62 are substantially perpendicular. Of the pair of projecting portions 61, the projecting portion 61 on the second contact portion 57 side constitutes a part of the connecting portion 52 (both ends in the longitudinal direction), and the projecting portion 61 on the first contact portion 56 side is the opening 21. It contacts the peripheral edge portion (ground pattern 22). In addition, the board | substrate latching | locking part 60 formed in the main-body part 53 has comprised the symmetrical shape on both sides of the 2nd contact part 57. As shown in FIG.

  As described above, according to the present embodiment, the driver substrate 20 has the ground pattern 22, the opening 21, and the contact portion 50, and the contact portion 50 has the ground pattern formed on the driver substrate 20. 22, and the second contact portion 57 that contacts the bezel 40, the driver can be used without using a gasket having a large thickness as in the first embodiment. The ground of the substrate 20 can be strengthened, and the countermeasure against electromagnetic noise can be strengthened.

  In addition, since the contact portion 50 has a board locking portion 60 that locks from the outer side (opposite side of the housing 32) with respect to the peripheral edge portion of the opening 21, the outer side of the driver board 20 (the housing). Since the displacement to the side opposite to the body 32 can be regulated, the driver board 20 can be more securely held in the state fixed to the housing 32.

<Embodiment 3>
Next, a liquid crystal display device 10 according to a third embodiment of the present invention will be described with reference to FIGS.
The liquid crystal display device 10 of the present embodiment is different from the first embodiment in that the contact part 70 is inserted from the housing 32 side toward the driver substrate 20 side. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and the overlapping description is abbreviate | omitted.

  The liquid crystal display device 10 according to the present embodiment includes the liquid crystal panel 11 and the backlight device 30 as in the first embodiment, and these are integrally held by a bezel 40 or the like, A plurality of driver boards 20 are disposed around the liquid crystal panel 11, and the driver board 20 and the liquid crystal panel 11 are connected via a plurality of flexible boards 14. Further, as in the first embodiment, an opening 71 and a ground pattern 72 are formed in the driver substrate 20, and a through-hole 73 is formed in the housing 32.

  The openings 71 are formed at both ends of each driver board 20 in the longitudinal direction, and have a substantially circular shape as shown in FIG. The pair of openings 71 formed in one driver substrate 20 have substantially the same shape and the same size, and are symmetrical with respect to the center line in the longitudinal direction of the driver substrate 20.

  Similarly to the first embodiment, the ground pattern 72 is formed on the peripheral edge of each opening 71, and opens from one surface (surface disposed on the side opposite to the casing 32) of the front and back surfaces of the driver substrate 20. 71 is formed over the inner wall surface 71 </ b> A forming the opening 71. The ground pattern 72 is formed over the entire circumference of the opening 71, and the connecting portion 72A formed on the inner wall surface 71A of the opening is formed over the entire inner wall surface 71A (the entire circumference and the entire width).

  One through-hole 73 is provided at a position corresponding to the longitudinal end of each driver board 20 in the wall member 34 of the housing 32, and each through-hole 73 has a wall thickness of the wall plate 35 of the wall member 34. It is formed so as to penetrate in the direction (front and back direction) and has a substantially circular shape slightly smaller than the opening 71 as shown in FIG. In a state where the driver board 20 is placed along the wall plate 35 of the housing 32, the through-hole 73 and the opening 71 are continuous with the center line as one.

  A contact portion 70 that connects the ground pattern 72 and the bezel 40 is fitted into the opening 71 of the driver substrate 20. The contact portion 70 is formed of a metal material into a cylindrical or solid column shape, and its cross-sectional shape is substantially circular.

  The contact part 70 is inserted from the housing 32 side toward the driver board 20 side (from the through hole 73 side to the opening 71 side). As shown in FIG. 3, the contact portion 70 has a length dimension that is larger than the dimension obtained by adding the thickness dimension of the wall plate 35 of the housing 32 and the thickness dimension of the driver substrate 20.

  As shown in FIG. 13, one end portion in the longitudinal direction of the contact portion 70 (referred to as the head portion 70A) has a conical shape whose width dimension gradually decreases toward the tip, and a portion excluding this one end portion (body portion) 70B) has a cylindrical shape with a substantially constant width dimension. The contact part 70 is inserted from the through-hole 73 to the opening 71 side in a posture in which the head part 70 </ b> A is directed in the insertion direction.

  A first contact portion 74 that elastically contacts the connection portion 72A of the ground pattern 72 formed on the driver substrate 20 is provided on the body portion 70B of the contact portion 70. As shown in FIG. 15, the first contact portion 74 is formed at a substantially central position in the longitudinal direction of the body portion 70 </ b> B, in other words, at a position corresponding to the approximate center in the thickness direction of the driver substrate 20. A pair of first contact parts 74 is provided at symmetrical positions (positions that bisect the body part 70B in the circumferential direction) across the axis of the body part 70B (see FIG. 14). The first contact portion 74 is formed by knocking out a part of the body portion 70B to the outside, and the cross-sectional shape of the first contact portion 74 is a semicircular shape, and the surface thereof is a curved surface. Moreover, when the 1st contact part 74 is seen from the side (normal direction of the trunk | drum 70B), it has comprised the substantially circular shape (refer FIG. 16).

  The tip of the head portion 70 </ b> A of the contact portion 70 is a second contact portion 75 that contacts the cover portion 43 of the bezel 40. The second contact portion 75 has a sharp shape in the axial direction of the head portion 70A (the contact direction with the bezel 40). The second contact portion 75 is located on the central axis of the contact portion 70.

  A housing locking portion 76 that locks to the housing 32 is provided at the end of the contact portion 70 opposite to the head 70 </ b> A. The case locking portion 76 is formed by pushing the edge of the body portion 70B of the contact portion 70 outward over the entire circumference and projecting to the side of the body portion 70B. The case locking portion 76 is substantially perpendicular to the axis of the body portion 70B, and is locked from the inner side (the side opposite to the side on which the driver board 20 is disposed) with respect to the peripheral portion of the through-hole 73, The contact part 70 is prevented from coming off from the through-hole 73. The housing locking portion 76 is an annular shape that protrudes from the body portion 70 </ b> B of the contact portion 70 by a certain dimension.

  Of the body part 70 </ b> B of the contact part 70, between the first contact part 74 and the case locking part 76, the case holding part 77 that sandwiches the peripheral edge of the through-hole 73 between the case locking part 76. Is provided (see FIG. 16). The housing sandwiching portion 77 is located at a position corresponding to the peripheral edge on the front side of the through-hole 73 in the axial direction of the body portion 70B, and a symmetrical position (the body portion 70B is sandwiched between the axial lines of the body portion 70B in the circumferential direction of the body portion 70B. A pair is provided at a position that bisects in the circumferential direction. Further, each housing clamping portion 77 is provided at a position corresponding to the middle of the pair of first contact portions 74 in the circumferential direction of the body portion 70B, in other words, at a position shifted 90 degrees in the circumferential direction from the first contact portion 74. ing. The casing holding portion 77 and the first contact portion 74 are provided at positions that equally divide the body portion 70B into four in the circumferential direction of the body portion 70B. Similar to the first contact portion 74, the case sandwiching portion 77 is formed by knocking a part of the body portion 70B outward, the cross-sectional shape is a semicircular shape, and the surface thereof is a curved surface. In addition, when the housing | casing clamping part 77 is seen from the side (normal direction of the trunk | drum 70B), it comprises substantially circle shape (refer FIG. 15), and the housing | casing clamping part 77 and the 1st contact part 74 are substantially the same magnitude | size. And the same shape.

Next, how to take countermeasures against electromagnetic wave noise in the liquid crystal display device 10 of the present embodiment will be described.
First, as in the first embodiment, the driver board 20 is disposed at a predetermined position along the wall plate 35 of the housing 32, and the contact portion 70 is inserted from the through-hole 73 toward the opening 71. Then, the contact part 70 passes through the through-hole 73 and the opening part 71 while bringing the first contact part 74 and the housing clamping part 77 into contact with the inner peripheral surface of the through-hole 73 or the opening part 71, and eventually the head part. 70 </ b> A protrudes outside the driver substrate 20, and the housing locking portion 76 contacts the peripheral edge of the through-hole 73. At this time, as for the contact part 70, the housing | casing clamping part 77 contacts the outer periphery of the through-hole 73, the 1st contact part 74 contacts the connection part 72A of the ground pattern 72, and the front-end | tip (2nd of 2nd head part 70A). The contact portion 75) is arranged at the position where the bezel 40 is arranged. In this way, the contact portion 70 is fixed to the housing 32 and the driver board 20 is attached to the housing 32.

  Next, as in the first embodiment, the casing 32 and the liquid crystal panel 11 are assembled together using the bezel 40. When the liquid crystal panel 11 is placed on the front side of the housing 32, the bezel 40 is installed on the front side, and the bezel 40 is fixed to the housing 32 with screws or the like, the cover 43 of the bezel 40 contacts the second contact portion 75. In this state, the bezel 40 and the housing 32 are assembled together. Thus, the ground pattern 72 of the driver substrate 20 and the bezel 40 are conductively connected via the contact portion 70, and the ground of the driver substrate 20 is strengthened.

  As described above, according to the present embodiment, the ground pattern 72, the opening 71, and the contact portion 70 are formed on the driver substrate 20, and the contact portion 70 is formed on the driver substrate 20. 72, and the second contact portion 75 that contacts the bezel 40, the driver can be used without using a gasket having a large thickness as in the first embodiment. Since the ground of the substrate 20 can be strengthened, countermeasures against electromagnetic noise can be strengthened.

  In addition, since the surfaces of the housing sandwiching portion 77 and the first contact portion 74 are curved surfaces, the housing sandwiching portion 77 and the first contact portion 74 are not easily caught by the through-hole 73, so that the contact portion 70 can be smoothly moved. Can be inserted.

<Embodiment 4>
Next, a liquid crystal display device 10 according to a fourth embodiment embodying the present invention will be described with reference to FIGS.
In the liquid crystal display device 10 according to the present embodiment, the housing sandwiching portion 80 protrudes little by little from the front in the insertion direction of the contact portion 70 toward the rear, and the rear end engages with the peripheral portion of the through-hole 73. This is different from the third embodiment. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 3, and the overlapping description is abbreviate | omitted.

  The liquid crystal display device 10 according to the present embodiment includes the liquid crystal panel 11 and the backlight device 30 as in the third embodiment, and these are integrally held by a bezel 40 or the like, A plurality of driver boards 20 are disposed around the liquid crystal panel 11, and the driver board 20 and the liquid crystal panel 11 are connected via a plurality of flexible boards 14. Further, as in the third embodiment, an opening 71 and a ground pattern 72 are formed in the driver substrate 20, and a through-hole 73 is formed in the housing 32.

  The contact portion 70 that connects the ground pattern 72 and the bezel 40 is fitted into the opening 71 of the driver substrate 20 as in the third embodiment. Similar to the third embodiment, the contact portion 70 is inserted from the housing 32 side toward the driver substrate 20 side (from the through hole 73 side to the opening portion 71 side), and includes a head portion 70A and a trunk portion 70B. The body 70B is provided with a first contact portion 74, the tip of the head 70A is a second contact portion 75, and the end of the contact portion 70 opposite to the head 70A is a housing. A body locking portion 76 is provided.

  And between the 1st contact part 74 and the housing | casing latching | locking part 76 among the trunk | drum 70B of the contact part 70, the housing | casing clamping which pinches | interposes the peripheral part of the through-hole 73 between the housing | casing latching | locking parts 76. A portion 80 is provided. As in the third embodiment, the housing holding portion 80 is located at a position corresponding to the peripheral edge on the front side of the through-hole 73 in the axial direction of the body portion 70B (see FIG. 18), and in the circumferential direction of the body portion 70B. A pair is provided at symmetrical positions (positions where the body portion 70B is divided into two equal parts in the circumferential direction) across the axis. Each housing clamping part 80 is provided at a position corresponding to the middle of the pair of first contact parts 74 in the circumferential direction of the body part 70B, as in the third embodiment.

  The case clamping part 80 is formed by raising a part of the body part 70B to the outside. The case clamping unit 80 has a cantilever shape with the head 70A side as a base end and the case locking portion 76 side as a free end, and is gradually separated from the body 70B from the base end side toward the free end side. An inclination is formed, and the free end edge is locked to the peripheral edge portion of the through-hole 73. In addition, when the housing | casing clamping part 80 is seen from the side (normal direction of the trunk | drum 70B), it has comprised the substantially square shape.

  As described above, according to the present embodiment, the ground pattern 72, the opening 71, and the contact portion 70 are formed on the driver substrate 20, and the contact portion 70 is formed on the driver substrate 20. 72, and the second contact portion 75 that contacts the bezel 40, the driver can be used without using a gasket having a large thickness as in the first embodiment. Since the ground of the substrate 20 can be strengthened, countermeasures against electromagnetic noise can be strengthened.

  In addition, the housing sandwiching portion 80 protrudes little by little from the front in the insertion direction of the contact portion 70 toward the rear, and its rear end is locked to the peripheral edge of the through-hole 73. In addition, since the housing holding portion 80 is not easily caught by the through-hole 73, the contact portion 70 can be inserted smoothly.

<Embodiment 5>
Next, a liquid crystal display device 10 according to a fifth embodiment embodying the present invention will be described with reference to FIGS. 19 and 20.
The liquid crystal display device 10 of the present embodiment is an embodiment in that the contact portion 70 has a substrate locking portion 90 that locks the peripheral edge of the opening 71 from the side opposite to the housing 32. 4 is different. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 4, and the overlapping description is abbreviate | omitted.

  The liquid crystal display device 10 according to the present embodiment includes the liquid crystal panel 11 and the backlight device 30 as in the fourth embodiment, and these are integrally held by a bezel 40 or the like, A plurality of driver boards 20 are disposed around the liquid crystal panel 11, and the driver board 20 and the liquid crystal panel 11 are connected via a plurality of flexible boards 14. Further, as in the fourth embodiment, an opening 71 and a ground pattern 72 are formed in the driver substrate 20, and a through-hole 73 is formed in the housing 32.

  The contact portion 70 that connects the ground pattern 72 and the bezel 40 is fitted into the opening 71 of the driver substrate 20, as in the fourth embodiment. Similar to the fourth embodiment, the contact part 70 is inserted from the housing 32 side toward the driver board 20 side (from the through-hole 73 side to the opening 71 side), and includes a head part 70A and a trunk part 70B. The body 70B is provided with a first contact portion 74, the tip of the head 70A is a second contact portion 75, and the end of the contact portion 70 opposite to the head 70A is a housing. A body locking portion 76 is provided, and a housing clamping portion 80 is provided between the first contact portion 74 and the housing locking portion 76 in the body portion 70 </ b> B of the contact portion 70.

  The contact portion 70 is provided with a substrate locking portion 90 that locks the peripheral edge of the opening 71 from the outside (the side opposite to the housing 32). The substrate locking portion 90 is located at a position corresponding to the outer peripheral edge of the opening 71 in the axial direction of the body portion 70B (see FIG. 20), and is symmetrical with respect to the axial line of the body portion 70B in the circumferential direction of the body portion 70B. A pair is provided at (position where the body portion 70B is equally divided into two in the circumferential direction). Each substrate locking portion 90 is provided at the same position as the pair of housing sandwiching portions 80 in the circumferential direction of the body portion 70B, that is, at a position corresponding to the middle between the pair of first contact portions 74.

  Similarly to the case clamping unit 80, the substrate locking part 90 is formed by raising a part of the body part 70B outward, and the head 70A side is a base end, and the case locking part 76 side is a free end. Cantilevered. The board locking portion 90 has substantially the same size and the same shape as the housing holding portion 80, and is inclined gradually away from the trunk portion 70B from the base end side toward the free end side, and the free end edge thereof penetrates. Locks to the periphery of the mouth 73.

  As described above, according to the present embodiment, the ground pattern 72, the opening 71, and the contact portion 70 are formed on the driver substrate 20, and the contact portion 70 is formed on the driver substrate 20. 72, and the second contact portion 75 that contacts the bezel 40, the driver can be used without using a gasket having a large thickness as in the fourth embodiment. Since the ground of the substrate 20 can be strengthened, countermeasures against electromagnetic noise can be strengthened.

  In addition, since the contact portion 70 has a board locking portion 90 that locks the peripheral edge of the opening 71 from the side opposite to the housing 32, the contact portion 70 is connected to the outside of the driver board 20 (with the housing 32. Since the displacement to the opposite side) can be regulated, the driver board 20 can be held in a state of being more securely fixed to the housing 32.

  Further, the board locking portion 90 protrudes sideways little by little from the front side in the insertion direction of the contact portion 70 and the rear end thereof is locked to the peripheral edge portion of the opening portion 71. Since the board locking portion 90 is not easily caught when the portion 70 is inserted, the contact portion 70 can be inserted smoothly.

<Embodiment 6>
Next, a liquid crystal display device 10 according to a sixth embodiment of the present invention will be described with reference to FIGS.
In the liquid crystal display device 10 of the present embodiment, a compression coil spring (elastic member) 131 is accommodated in the contact portion 130, and a second contact portion 138 is a head (piston) provided on one end side of the compression coil spring 131. Part) 132, which is different from the fifth embodiment. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 5, and the overlapping description is abbreviate | omitted.

  The liquid crystal display device 10 according to the present embodiment includes the liquid crystal panel 11 and the backlight device 30 as in the fifth embodiment, and these are integrally held by a bezel 40 or the like, A plurality of driver boards 20 are disposed around the liquid crystal panel 11, and the driver board 20 and the liquid crystal panel 11 are connected via a plurality of flexible boards 14. Further, as in the fifth embodiment, the driver substrate 20 is formed with an opening 71 and a ground pattern 72, and the housing 32 is formed with a through-hole 73.

  The contact portion 130 that connects the ground pattern 72 and the bezel 40 is fitted into the opening 71 of the driver substrate 20, as in the fifth embodiment. Similarly to the fifth embodiment, the contact portion 130 is inserted from the housing 32 side toward the driver board 20 side (from the through hole 73 side to the opening 71 side). It has.

  The body part 133 has a cylindrical shape with a substantially constant width dimension, and has a length dimension that is larger than the sum of the thickness dimension of the wall plate 35 of the housing 32 and the thickness dimension of the driver board 20. Yes. As in the fifth embodiment, the body 133 is provided with a first contact portion 74, a case locking portion 76, a case holding portion 80, and a substrate locking portion 90.

  The trunk | drum 133 is opened to the both sides of an axial direction. One end side of the body part 133 (the housing locking part 76 side) is a full surface opening, and the whole body part 133 is opened in the axial direction. The other end side of the body part 133 has a form in which an end wall 134 protrudes in a direction (crossing direction with respect to the axial direction) to close the opening, and a part thereof is closed. The end wall 134 is formed over the entire periphery of the body part 133 and protrudes inward from the periphery of the body part 133, and the protruding dimension thereof is substantially constant in the circumferential direction. When the end wall 134 is viewed from the axial direction of the body portion 133, the end wall 134 has an annular shape, and the center portion is open (see FIG. 21). The opening at the center of the end wall 134 has a substantially circular shape that is slightly smaller than the opening on the opposite side of the body 133.

  A metal compression coil spring 131 is accommodated in the body portion 133. The compression coil spring 131 has a cylindrical shape having a substantially constant diameter, and fits inside the trunk portion 133 with almost no gap. The compression coil spring 131 has a length in the axial direction in a natural state that is the same as the length of the body 133 (see FIG. 22). The compression coil spring 131 is inserted into the body 133 from the opening opposite to the side on which the end wall 134 is provided, and is accommodated in the body 133 by the lid member 135 attached to the opening. Retained.

  A head 132 is provided on one end side of the compression coil spring 131 in the axial direction (the side opposite to the lid member 135). The head portion 132 includes a substantially circular plate-shaped detachment restricting portion 136 that contacts one end of the compression coil spring 131, and a shaft portion 137 that protrudes from the detachment restricting portion 136. The detachment restricting portion 136 is accommodated inside the trunk portion 133, and the shaft portion 137 protrudes outward from the opening of the end wall 134.

  The detachment restricting portion 136 abuts against the end wall 134 and restricts the head 132 from detaching from the trunk portion 133. The detachment restricting portion 136 has a diameter dimension equivalent to the diameter dimension of the compression coil spring 131.

  The shaft portion 137 rises from the center of the separation restricting portion 136 in a substantially vertical direction, and the base side portion (the portion on the separation restriction portion 136 side) has a cylindrical shape with a substantially constant diameter. The diameter of the shaft portion 137 is set to a size that allows the central opening of the end wall 134 to be inserted. The tip portion of the shaft portion 137 has a conical shape whose diameter is gradually reduced toward the tip. The tip of the shaft portion 137 is a second contact portion 138 that contacts the cover portion 43 of the bezel 40, and has a sharp shape in the axial direction (contact direction with the bezel 40). Note that the second contact portion 138 is located on the central axis of the contact portion 130.

  Similarly to the fifth embodiment, when the contact portion 130 is inserted from the through-hole 73 toward the opening 71 and attached to a predetermined position, the tip end portion (second contact portion 138) of the head portion 132 is attached to the bezel 40. It will be in the state arranged at the arrangement position. When the bezel 40 is assembled, the cover portion 43 of the bezel 40 comes into contact with the second contact portion 138, the head 132 is pushed into the body portion 133, and the compression coil spring 131 is in a compressed state. The part 138 is in a state of elastically contacting the cover part 43 of the bezel 40.

  As described above, according to the present embodiment, the ground pattern 72, the opening 71, and the contact portion 130 are formed on the driver substrate 20, and the contact portion 130 is formed on the driver substrate 20. 72, and the second contact portion 138 that contacts the bezel 40, the driver can be used without using a gasket having a large thickness as in the fifth embodiment. Since the ground of the substrate 20 can be strengthened, countermeasures against electromagnetic noise can be strengthened.

  In addition, the body portion 133 of the contact portion 130 has a cylindrical shape, and a compression coil spring 131 is accommodated therein, a head portion 132 is provided on one end side in the axial direction of the compression coil spring 131, and the second contact is made. The part 138 is provided on the head 132 and comes into contact with the bezel 40 in a state where the compression coil spring 131 is elastically contracted. Therefore, even when the bezel 40 is displaced outward (side away from the contact portion 130), the head 132 is pushed toward the bezel 40 by the restoring force of the compression coil spring 131 and is held in contact with the bezel 40. Therefore, a high contact pressure with respect to the bezel 40 can be secured, and the connection reliability can be improved.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

(1) In the above embodiment, the driver board 20 is arranged along the wall plate 35 of the housing 32. However, the present invention is not limited to this, and for example, the driver board is arranged along the bottom plate and is different from the bezel 40. You may make it contact with another holding member.
(2) In the above embodiment, the housing 32 is made of the metal bottom member 33 and the resin wall member 34. However, the present invention is not limited thereto, and the housing includes a bottom member and a wall member. May be integrally formed of the same material, and may be made of metal or resin.

  (3) In the above embodiment, the ground pattern 22 (72) is formed from one of the front and back surfaces of the driver board 20 to the inner wall surface 23 (71A) of the opening that forms the opening 21 (71). The ground pattern is not necessarily formed on the inner wall surface of the opening. At this time, the first contact portion of the contact portion may be extended to the plate surface of the driver substrate, for example, and may be elastically brought into contact with the ground pattern formed on the plate surface.

  (4) In the above embodiment, the through hole 37 (73) is formed in the housing 32, and the contact portions 50 (70) and (130) are inserted into the opening 21 (71) and the through hole 37 (73). The housing locking portion 58 (76, 90) is locked to the peripheral edge of the through-hole 37 (73), but means for locking the contact portion to the housing is provided. For example, a recessed portion having a recessed shape with a back wall may be formed in the housing, and the housing locking portion may be press-fitted into the recessed portion.

  (5) In the above embodiment, the contact portions 50 (70) (130) are made of a metal material, but the entire contact portions 50 (70) (130) or at least the second contact portions 57 (75). ) (138) may be made of a shape memory alloy. Thereby, even if the second contact portion is deformed when the liquid crystal display device is assembled, the original shape can be restored by heating.

(6) In the first embodiment, the second contact portion 57 has a cantilever shape, but the second contact portion 57 may have a double-end shape, and has a pointed shape as shown in the third embodiment. It may be a thing.
(7) In the first embodiment, the contact portion 50 has a constant width dimension of the leg portion 54 over the entire length. However, the contact portion 100 is not limited to this. For example, as shown in FIG. By chamfering or rounding both corners 101 in the width direction of the front end portion 54 (the front end portion in the insertion direction of the contact portion 100) as shown by a two-dot chain line, the width dimension decreases toward the front. It is good also as a taper shape (wedge shape). Thereby, the fitting operation | work of the contact part 100 can be performed smoothly.

  (8) In the first embodiment, the housing locking portion 58 is formed so that a part of the leg portion 54 protrudes with a semicircular cross section, but is not limited to this, for example, FIG. 25 and FIG. As shown in FIG. 2, the housing locking part 110 is formed by folding the tip end part of each leg part 54 toward the main body part 53 side, and gradually moves sideways from the front side in the insertion direction of the contact part 50 toward the rear side. It is good also as what protrudes and the back end latches to the peripheral part of the through-hole 37. FIG. Thereby, the insertion work of the contact part 50 can be performed easily, and the improvement of the latching force with respect to the housing | casing 32 can be aimed at.

  (9) In the second embodiment, the substrate locking portion 60 is formed by bending the end of the main body 53 so as to form a U-shaped cross section. May be formed by protruding a part of the contact portion. Specifically, as shown in FIG. 27, the connecting portion 52 protrudes on both sides of the main body portion 53 and protrudes from the main body portion 53. Both end portions of the connecting portion 52 may be the substrate locking portion 120. Further, for example, the substrate locking portion may be formed by protruding a part of the main body portion instead of the connecting portion to the side.

(10) In the second embodiment, the substrate locking portion 60 is formed by bending the end portion of the main body portion 53 so as to have a U-shaped cross section. May be formed by cutting a part of the main body part outward.
(11) In the third embodiment, the cross-sectional shape of the contact portion 70 is substantially circular, but is not limited thereto, and may be, for example, a substantially rectangular shape.

  (12) In the fifth embodiment, the board locking portion 90 is formed by cutting a part of the body portion 70B outward, and the head 70A side is the base end, and the housing locking portion 76 side is the free end. Although it is in a cantilever shape, the present invention is not limited to this, and is formed by, for example, the same configuration as the first contact portion 74, that is, by knocking out a part of the body portion 70B to the outside. It may be substantially circular when viewed from the (linear direction).

  DESCRIPTION OF SYMBOLS 10 ... Liquid crystal display device (display device), 11 ... Liquid crystal panel (display panel), 30 ... Backlight device (illuminating device), 40 ... Bezel (holding member), 20 ... Driver board | substrate (control board), 21, 71 ... Opening, 22, 72 ... ground pattern, 22A, 72A ... connection, 23, 71A ... inner wall surface of opening, 31 ... fluorescent lamp (light source), 32 ... housing, 37, 73 ... through-hole, 43 ... cover, 50, 70, 100, 130 ... contact portion, 55, 77, 80 ... housing clamping portion, 56, 74 ... first contact portion, 57, 75, 138 ... second contact portion, 58, 76, 110 ... housing Locking part, 60, 90, 120 ... Board locking part, 131 ... Compression coil spring (elastic member), 132 ... Head (piston part), TV ... TV receiver

Claims (25)

A display panel on which an image is displayed, a lighting device that emits light to the display panel, and a conductive holding member that integrally holds the display panel and the lighting device,
The display panel is connected to a control board that controls driving of the display panel,
The control board is formed with a ground pattern, an opening penetrating in the thickness direction of the control board, and a contact portion that is fitted in the opening and connects the ground pattern and the holding member. ,
The said contact part is a display apparatus which has the 1st contact part which contacts the said ground pattern formed in the said control board, and the 2nd contact part which contacts the said holding member. The ground pattern has a connection portion formed on the inner wall surface of the opening.
The display device according to claim 1, wherein the first contact portion is provided so as to protrude from a side surface of the contact portion and contacts the connection portion. The lighting device includes a plurality of light sources and a housing that houses the light sources,
The control board is disposed along the wall surface of the housing,
The holding member has a cover portion located on the opposite side of the housing of the control board,
3. The display device according to claim 1, wherein the second contact portion is provided at an end portion of the contact portion opposite to the housing and contacts the cover portion.   The display device according to claim 3, wherein the contact portion includes a housing engaging portion that engages with the housing, and fixes the control board to the housing. A through-hole is formed in the housing at a position corresponding to the opening,
The contact portion is inserted into the opening and the through hole,
The display device according to claim 4, wherein the housing locking portion is locked from a side opposite to a side on which the control board is disposed with respect to a peripheral portion of the through-hole. The contact portion is inserted from the control board side toward the housing side,
The said housing | casing latching | locking part protrudes little by little toward the back from the front of the insertion direction of the said contact part, The rear end shall be latched to the peripheral part of the said through-hole. The display device described.   The contact portion is engaged with the peripheral portion of the through-hole from the side where the control board is disposed, and the case holding portion sandwiches the peripheral portion of the through-hole between the contact portion and the case engaging portion. The display device according to claim 5, comprising: The contact portion is inserted from the control board side toward the housing side,
The opening is formed with a larger opening area than the through-hole,
The display device according to claim 7, wherein a part of the main body portion that fits into the opening portion of the contact portion constitutes the housing holding portion. The contact portion is inserted from the housing side toward the control board side,
The display device according to claim 7, wherein the housing sandwiching portion is provided to protrude from a side surface of the contact portion, and a surface thereof is a curved surface. The contact portion is inserted from the housing side toward the control board side,
The said housing | casing clamping part protrudes little by little toward the back from the front of the insertion direction of the said contact part, The rear end shall be latched to the peripheral part of the said through-hole. Display device.   The display according to any one of claims 3 to 10, wherein the contact portion includes a substrate locking portion that is locked from a side opposite to the housing with respect to a peripheral edge portion of the opening. apparatus. The contact portion is inserted from the housing side toward the control board side,
The said board | substrate latching | locking part protrudes little by little toward the back from the front of the insertion direction of the said contact part, and the rear end is supposed to be latched to the peripheral part of the said opening part. Display device.   The display device according to claim 1, wherein the second contact portion is in elastic contact with the holding member.   The display device according to claim 13, wherein the second contact portion is formed by cutting and raising a part of the contact portion toward the holding member, and is elastically deformable in a contact direction with the holding member. . The contact portion has a cylindrical shape,
An elastic member that is elastically deformable in the axial direction is accommodated inside the contact portion,
A piston portion is provided on one end side in the axial direction of the elastic member,
The display device according to claim 13, wherein the second contact portion is provided in the piston portion and contacts the holding member in a state where the elastic member is elastically contracted.   The display device according to claim 15, wherein the second contact portion is provided at a tip of the piston portion and has a sharp shape in a contact direction with the holding member.   The display device according to claim 1, wherein at least the second contact portion of the contact portion is made of a shape memory alloy. The lighting device includes a plurality of light sources and a housing that houses the light sources,
A through-hole is formed in the housing at a position corresponding to the opening,
18. The display device according to claim 1, wherein a portion of the contact portion located in the through hole has a width dimension equivalent to a width dimension of the through hole.   The display device according to any one of claims 1 to 18, wherein a distal end portion of the contact portion in an insertion direction has a tapered shape in which a width dimension decreases toward a front side.   The display device according to any one of claims 1 to 19, wherein the first contact portion is provided at a position that equally divides the contact portion in a circumferential direction. The lighting device includes a plurality of light sources and a housing that houses the light sources,
The contact portion has a housing locking portion for locking to the housing,
21. The display device according to claim 1, wherein the housing locking portion is provided at a position that equally divides the contact portion in a circumferential direction. The lighting device includes a plurality of light sources and a housing that houses the light sources,
The control board is disposed along the wall surface of the housing,
A through-hole is formed in the housing at a position corresponding to the opening,
The contact portion includes a housing locking portion that is locked from a side opposite to a side where the control board is disposed with respect to a peripheral portion of the through-hole, and the control substrate is connected to the peripheral portion of the through-hole. Locking from the side to be arranged, and having a housing holding portion that sandwiches the peripheral edge of the through-hole between the housing locking portion,
The display device according to any one of claims 1 to 21, wherein the housing sandwiching portion is provided at a position that equally divides the contact portion in a circumferential direction. The lighting device includes a plurality of light sources and a housing that houses the light sources,
The control board is disposed along the wall surface of the housing,
The contact portion has a substrate locking portion that locks from the opposite side of the housing to the peripheral edge of the opening,
The display device according to any one of claims 1 to 22, wherein the substrate locking portion is provided at a position that equally divides the contact portion in a circumferential direction.   The display device according to any one of claims 1 to 23, wherein the display panel is a liquid crystal panel using liquid crystal.   A television receiver comprising the display device according to any one of claims 1 to 24.

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