JP7065355B2 - Image display device - Google Patents

Description

The present disclosure relates to an image display device for displaying an image and a connection pin.

Patent Document 1 is arranged between a display panel, a lower frame arranged on the back side of the display panel, a direct type backlight supported by the lower frame, and the display panel and the backlight, and is arranged from the backlight. Disclosed is an image display device comprising a reflective sheet that reflects the light of the light toward the back surface of the display panel.

The backlight has a plurality of substrates and LEDs (Light Emitting Diodes) mounted on each of the plurality of substrates. A connector electrically connected to the LED is mounted on each of the plurality of boards. The connector has a metal terminal and a resin housing that covers the metal terminal. The connector on the board is electrically connected to the connector on another board via a lead wire with a connector.

Japanese Unexamined Patent Publication No. 2016-62765

The present disclosure provides an image display device and connection pins capable of suppressing the occurrence of luminance unevenness in an image displayed on a display panel.

The image display device in the present disclosure is arranged on a display panel for displaying an image on the front surface, a first board on the back side of the display panel on which a light source is mounted, and a circuit unit on the back side of the display panel. A second substrate mounted, a first metal member arranged on the first substrate and electrically connected to a light source, and a second metal member arranged on the second substrate. , A second metal member electrically connected to the circuit unit and fitted with the first metal member, and a reflective member for reflecting the light from the light source toward the back surface of the display panel. Between the panel and the first substrate and the second substrate, a first metal member is provided with a reflective member arranged so as to cover at least the first metal member and the second metal member and having electrical insulation. One of the metal member and the second metal member has a mark portion, and the mark portion is a first metal member in a state where the first metal member and the second metal member are fitted to each other. And covered by the other of the second metal members.

According to the image display device in the present disclosure, it is possible to suppress the occurrence of luminance unevenness in the image displayed on the display panel.

FIG. 1 is a perspective view showing an image display device according to an embodiment. FIG. 2 is an exploded perspective view showing the liquid crystal module of the image display device according to the embodiment in an exploded manner. FIG. 3 is a diagram showing a part of the liquid crystal module according to the embodiment extracted. FIG. 4A is an enlarged view showing a portion of the liquid crystal module of the image display device according to the embodiment surrounded by the broken line frame line P in FIG. FIG. 4B is a diagram showing a liquid crystal module of FIG. 4A in a state before the LED substrate and the relay substrate are connected to each other. FIG. 5 is a cross-sectional view of a liquid crystal module of the image display device according to the embodiment according to the VV line of FIG. 4A. FIG. 6 is an enlarged perspective view showing the first metal member according to the embodiment. FIG. 7 is an enlarged perspective view showing the second metal member according to the embodiment. FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 7 of the second metal member according to the embodiment. FIG. 9A is a diagram showing a first metal member and a second metal member in a state before being fitted to each other. FIG. 9B is a diagram showing a first metal member and a second metal member in a state of being fitted to each other. FIG. 10 is a cross-sectional view of the first metal member and the second metal member by X-rays of FIG. 9B. FIG. 11 is an enlarged cross-sectional view showing a part of the liquid crystal module of the image display device according to the comparative example.

Hereinafter, embodiments will be described in detail with reference to the drawings as appropriate. However, more detailed explanation than necessary may be omitted. For example, detailed explanations of already well-known matters and duplicate explanations for substantially the same configuration may be omitted. This is to avoid unnecessary redundancy of the following description and to facilitate the understanding of those skilled in the art.

It should be noted that the inventor intends to provide the accompanying drawings and the following description in order for those skilled in the art to fully understand the present disclosure, and is not intended to limit the subject matter described in the claims by these. ..

(Embodiment)
Hereinafter, embodiments will be described with reference to FIGS. 1 to 11.

[1. Overall configuration of image display device]
First, the overall configuration of the image display device 2 according to the embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view showing an image display device 2 according to an embodiment. FIG. 2 is an exploded perspective view showing the liquid crystal module 4 of the image display device 2 according to the embodiment in an exploded manner. FIG. 3 is a diagram showing a part of the liquid crystal module 4 according to the embodiment. In FIG. 3, only the lower frame 10 and the backlight 12 of the liquid crystal module 4 are extracted and shown.

As shown in FIG. 1, the image display device 2 is, for example, a flat panel display type liquid crystal television receiver. The image display device 2 includes a liquid crystal module 4, a back cover 6 that covers the back surface of the liquid crystal module 4, and a stand 8 that supports the liquid crystal module 4.

The liquid crystal module 4 is a unit for displaying an image (including a still image and a moving image). As shown in FIG. 2, the liquid crystal module 4 includes a lower frame 10 (an example of a support member), a backlight 12, a reflective sheet 14 (an example of a reflective member), a plurality of support pins 16, and a luminance uniform plate 18. A diffuser plate 20, an optical sheet unit 22, a mold frame 24, a display panel 26, and a bezel 28 are provided.

The lower frame 10 is a member for supporting the backlight 12, the optical sheet unit 22, and the like, and is also referred to as a base plate. The lower frame 10 is formed of a thin sheet metal and is formed in a rectangular shape in an XY plan view. As shown in FIG. 3, on the front surface (the surface on the display panel 26 side) of the lower frame 10, a plurality of recesses corresponding to the connection portion between the LED board 36 (described later) and the relay board 40 (described later) are recessed. 30 is formed. Each of the plurality of recesses 30 is formed, for example, by drawing a sheet metal, and is formed so as to be recessed toward the back cover 6 side (minus side of the Z axis). The plurality of recesses 30 are arranged at the central portion of the lower frame 10 in the lateral direction (Y-axis direction) at intervals along the longitudinal direction (X-axis direction) of the lower frame 10. Further, as shown in FIG. 5 described later, each of the plurality of recesses 30 has a first metal member 48 (described later) and a second metal member 50 (described later) fitted to each other in an XY plan view. ) Are formed in a plurality of through holes 31 arranged so as to overlap with each other. The first metal member 48 and the second metal member 50 form a connection pin 51 (see FIG. 4A described later) for connecting two different members to each other.

The backlight 12 is a direct type backlight for irradiating light toward the back surface of the display panel 26. As shown in FIGS. 2 and 3, the backlight 12 has a plurality of LED sheets 32 and a plurality of relay sheets 34.

As shown in FIG. 3, each of the plurality of LED sheets 32 is a member for irradiating light and is supported on the front surface of the lower frame 10. The plurality of LED sheets 32 are spaced along the longitudinal direction of the lower frame 10 on the upper side (plus side of the Y axis) and the lower side (minus side of the Y axis) from the central portion in the lateral direction of the lower frame 10. It is placed and placed.

Each of the plurality of LED sheets 32 has a long LED substrate 36 (an example of a first substrate) and a plurality of LEDs 38 (an example of a light source) mounted on a mounting surface of the LED substrate 36. .. The LED substrate 36 is a flexible sheet-shaped flexible printed circuit board, and is made of, for example, polyimide. The thickness (size in the Z-axis direction) of the LED substrate 36 is, for example, about 0.1 mm. A reflective layer for reflecting light from a plurality of LEDs 38 is formed on the mounting surface of the LED substrate 36. The LED substrate 36 is attached to the front surface of the lower frame 10 by, for example, double-sided tape, and is arranged so as to extend along the lateral direction of the lower frame 10. Each of the plurality of LEDs 38 is, for example, a chip type LED, and is arranged at intervals along the longitudinal direction (Y-axis direction) of the LED substrate 36.

As shown in FIG. 3, each of the plurality of relay sheets 34 is a member for electrically relaying the plurality of LED sheets 32, and is supported on the front surface of the lower frame 10. The plurality of relay sheets 34 are arranged at a center in the lateral direction of the lower frame 10 at intervals along the longitudinal direction of the lower frame 10.

Each of the plurality of relay sheets 34 has a long relay board 40 (an example of a second board) and a circuit unit 42 mounted on the mounting surface of the relay board 40. The relay board 40 is a flexible sheet-shaped flexible printed circuit board, and is made of, for example, polyimide. The thickness (size in the Z-axis direction) of the relay board 40 is, for example, about 0.1 mm. Similar to the LED board 36, a reflective layer for reflecting light from a plurality of LEDs 38 is formed on the mounting surface of the relay board 40. Further, the relay substrate 40 is formed with a plurality of slits 44 for increasing flexibility. The plurality of slits 44 are arranged at intervals along the longitudinal direction (X-axis direction) of the relay board 40. The relay board 40 is attached to the front surface of the lower frame 10 by, for example, double-sided tape, and is arranged so as to extend along the longitudinal direction of the lower frame 10. The circuit unit 42 is, for example, an electric circuit for supplying electric power, a control signal, or the like to each of a plurality of LEDs 38 of the LED sheet 32.

The LED board 36 and the relay board 40 are electrically connected to each other. The present embodiment is characterized by a connection structure for electrically connecting the LED substrate 36 and the relay substrate 40. The connection structure between the LED substrate 36 and the relay substrate 40 will be described in detail later.

The reflective sheet 14 is a member for reflecting the light from the plurality of LEDs 38 toward the back surface of the display panel 26. The reflective sheet 14 is flexible and is made of a white resin having electrical insulating properties such as polyethylene terephthalate (PET). The reflective sheet 14 is arranged so as to cover the plurality of LED sheets 32 and the plurality of relay sheets 34, and is attached to the front surface of the lower frame 10 with, for example, double-sided tape. That is, the reflective sheet 14 is arranged between the display panel 26, the plurality of LED sheets 32, and the plurality of relay sheets 34 so as to cover the first metal member 48 and the second metal member 50, which will be described later. .. As shown in FIG. 2, the reflective sheet 14 is formed with a plurality of holes 46 corresponding to the plurality of LEDs 38, respectively. As shown in FIG. 5 to be described later, each of the plurality of LEDs 38 is exposed on the reflective surface (the surface on the display panel 26 side) of the reflective sheet 14 by being inserted into the plurality of holes 46 of the reflective sheet 14. ..

Each of the plurality of support pins 16 is a member for supporting the diffuser plate 20. Each of the plurality of support pins 16 is arranged on the reflective surface of the reflective sheet 14 and sandwiches the reflective sheet 14 together with the lower frame 10. Each of the plurality of support pins 16 has a flange portion and a pin portion protruding from the flange portion.

The luminance uniform plate 18 is a member for uniformizing the light from the plurality of LEDs 38, and is a so-called flutter (registered trademark). The luminance uniform plate 18 is arranged so as to face the reflective sheet 14. The luminance uniform plate 18 is formed with a plurality of support holes corresponding to the plurality of support pins 16. By inserting the pin portion of the support pin 16 into each of the plurality of support holes, the luminance uniform plate 18 is supported by the flange portion of the support pin 16. Further, a plurality of lighting holes having different sizes are formed in the luminance uniform plate 18. Specifically, in the luminance uniform plate 18, an illumination hole having an extremely small diameter is formed directly above the LED 38, and an illumination hole having a larger diameter is formed as the distance from the LED 38 increases. By allowing the light from the plurality of LEDs 38 to pass through each of the plurality of illumination holes of the luminance uniform plate 18, the orientation characteristics of the light from the plurality of LEDs 38 can be smoothed.

The diffuser plate 20 is a member for diffusing the light from the plurality of LEDs 38. The diffuser plate 20 is arranged so as to face the luminance uniform plate 18 in a state of being supported by each pin portion of the plurality of support pins 16. Further, the outer peripheral portion of the diffusion plate 20 is supported by the lower frame 10. Since the diffuser plate 20 further diffuses the light whose alignment characteristics are smoothed by the luminance uniform plate 18, the light with less luminance unevenness is emitted from the diffuser plate 20.

The optical sheet unit 22 is a unit including a plurality of optical sheets having different optical characteristics. The plurality of optical sheets are arranged between the display panel 26 and the diffuser plate 20 in a state of being overlapped with each other. The plurality of optical sheets are, for example, a) a vertical prism sheet for condensing the light emitted from the diffuser plate 20, and b) a horizontal prism sheet for condensing the light emitted from the diffuser plate 20. c) A reflective polarizing sheet for polarizing the light emitted from the diffuser plate 20 (for example, a DBEF (registered trademark) (Dual Brightness Enhancement Film) sheet manufactured by Sumitomo 3M Co., Ltd.) and the like are included.

The mold frame 24 is formed in a rectangular frame shape in XY plan view. The mold frame 24 supports the display panel 26 and sandwiches each component from the optical sheet unit 22 to the backlight 12 with the lower frame 10.

The display panel 26 is a member for displaying an image. The display panel 26 is a so-called liquid crystal cell in which a liquid crystal is enclosed between a plurality of glass plates. A display surface for displaying an image is formed on the front surface of the display panel 26. The outer peripheral portion of the display panel 26 is supported by the mold frame 24 via a cushion member.

The bezel 28 is a member for protecting the outer peripheral portion of the display panel 26. The bezel 28 is formed in a rectangular frame shape in XY plan view, and is arranged so as to cover the outer peripheral portion of the display panel 26. The bezel 28 sandwiches each component from the display panel 26 to the lower frame 10 with the back cover 6 (see FIG. 1). The bezel 28 is made of a resin such as polycarbonate.

As shown in FIG. 1, the back cover 6 is arranged so as to cover the back surface of the lower frame 10 of the liquid crystal module 4. The back cover 6 is made of a resin such as polycarbonate.

[2. Connection structure between LED board and relay board]
Next, the connection structure between the LED substrate 36 and the relay substrate 40 will be described with reference to FIGS. 3 to 10.

FIG. 4A is an enlarged view showing a portion of the liquid crystal module 4 of the image display device 2 according to the embodiment surrounded by the broken line frame line P in FIG. FIG. 4B is a diagram showing the liquid crystal module 4 of FIG. 4A in a state before the LED substrate 36 and the relay substrate 40 are connected to each other. FIG. 5 is a cross-sectional view of the liquid crystal module 4 of the image display device 2 according to the embodiment according to the VV line of FIG. 4A.

FIG. 6 is an enlarged perspective view showing the first metal member 48 according to the embodiment. FIG. 7 is an enlarged perspective view showing the second metal member 50 according to the embodiment. FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 7 of the second metal member 50 according to the embodiment. FIG. 9A is a diagram showing a first metal member 48 and a second metal member 50 in a state before being fitted to each other. FIG. 9B is a diagram showing a first metal member 48 and a second metal member 50 in a state of being fitted to each other. FIG. 10 is a cross-sectional view of the first metal member 48 and the second metal member 50 by X-rays of FIG. 9B.

As shown in FIGS. 3 and 4A, a pair of first metal members 48 are arranged at one end of the LED substrate 36 in the longitudinal direction. Each of the pair of first metal members 48 is mounted on the mounting surface of the LED substrate 36 in an exposed state, and is arranged at intervals along the lateral direction (X-axis direction) of the LED substrate 36. .. Each of the pair of first metal members 48 is electrically connected to each of the plurality of LEDs 38 mounted on the LED substrate 36. As shown in FIG. 4B, each tip of the pair of first metal members 48 projects from one end in the longitudinal direction of the LED substrate 36. One of the pair of first metal members 48 functions as, for example, a positive electrode terminal, and the other of them functions as, for example, a negative electrode terminal. As shown in FIG. 5, the height H1 of the first metal member 48 from the mounting surface of the LED substrate 36 is, for example, about 1.5 mm.

As shown in FIGS. 3 and 4A, a plurality of pairs of second metal members 50 are arranged at both ends of the relay board 40 in the lateral direction (Y-axis direction). A plurality of pairs of second metal members 50 are arranged at intervals along the longitudinal direction of the relay board 40. Each of the pair of second metal members 50 is mounted on the mounting surface of the relay board 40 in an exposed state, and is arranged at intervals along the longitudinal direction of the relay board 40. Each of the pair of second metal members 50 is electrically connected to the circuit unit 42 mounted on the relay board 40. As shown in FIG. 4B, each tip of the pair of second metal members 50 projects from one end of the relay board 40 in the lateral direction. One of the pair of second metal members 50 functions as, for example, a positive electrode terminal, and the other of them functions as, for example, a negative electrode terminal. As shown in FIG. 5, the height H2 of the second metal member 50 from the mounting surface of the relay board 40 is, for example, about 1.7 mm.

Each of the pair of first metal members 48 is detachably fitted to the corresponding pair of second metal members 50. As shown in FIG. 5, the connection portion between the LED substrate 36 and the relay substrate 40 is arranged in a bent state along the recess 30 of the lower frame 10. That is, the pair of first metal members 48 and the pair of second metal members 50 fitted to each other are arranged in the recess 30 of the lower frame 10. Further, the pair of first metal members 48 and the pair of second metal members 50 fitted to each other are covered with a reflective sheet 14. For convenience of explanation, in FIGS. 3 to 5, the first metal member 48 and the second metal member 50 are shown in a simplified manner.

Next, each structure of the first metal member 48 and the second metal member 50 will be described in detail with reference to FIGS. 6 to 9A.

As shown in FIGS. 6 and 9A, the first metal member 48 is a female metal pin made of a conductive metal such as phosphor bronze. The first metal member 48 includes a main body portion 52 formed in a long and semi-cylindrical shape, and a plurality of leg portions 54 formed at both ends of the main body portion 52 in the lateral direction (X-axis direction). have. One end of the main body 52 in the longitudinal direction (Y-axis direction) protrudes from one end of the LED substrate 36 in the longitudinal direction. A fitting hole 56 and a marking hole 58 (an example of the marking portion) are formed on the top surface of the main body 52 (the surface opposite to the LED substrate 36). The fitting hole 56 and the mark hole 58 are arranged at positions biased toward one end portion side of the central portion in the longitudinal direction of the main body portion 52. The mark hole 58 is arranged closer to the LED substrate 36 than the fitting hole 56. Each of the plurality of legs 54 is fixed to the mounting surface of the LED substrate 36 by, for example, soldering.

As shown in FIGS. 7, 8 and 9A, the second metal member 50 is a male metal pin made of a conductive metal such as phosphor bronze. The second metal member 50 includes a main body 60 formed in a long and cylindrical shape, a fitting piece 62 arranged inside the main body 60, and a lateral direction (X-axis direction) of the main body 60. It has a plurality of leg portions 64 formed at both ends of the above. One end of the main body 60 in the longitudinal direction (Y-axis direction) protrudes from one end of the relay board 40 in the lateral direction. A standby hole 66 is formed on the top surface of the main body 60 (the surface opposite to the relay board 40). The standby hole 66 is arranged at the center of the main body 60 in the longitudinal direction.

As shown in FIG. 8, the fitting piece 62 extends in a long shape while being curved along the longitudinal direction of the main body portion 60. One end of the fitting piece 62 in the longitudinal direction is connected to the bottom surface (the surface on the relay board 40 side) of the main body 60. At the other end of the fitting piece 62 in the longitudinal direction, an operation portion 70 projecting to the outside of the main body portion 60 is formed. A fitting protrusion 68 is formed in the central portion of the fitting piece 62 in the longitudinal direction, for example, by cutting and raising. The fitting piece 62 is urged in a direction approaching the top surface of the main body 60. Therefore, in a state where no external force is applied to the operation unit 70, the fitting protrusion 68 is inserted into the standby hole 66 of the main body unit 60. Each of the plurality of legs 64 is fixed to the mounting surface of the relay board 40 by, for example, soldering.

Next, the procedure for mating the first metal member 48 and the second metal member 50 to each other will be described in detail with reference to FIGS. 9A to 10.

As shown in FIG. 9A, first, one end portion of the main body portion 52 of the first metal member 48 in the longitudinal direction is first inserted from one end portion of the main body portion 60 of the second metal member 50 in the longitudinal direction to the inside of the main body portion 60. Insert in. At this time, one end of the main body 52 in the longitudinal direction pushes down the fitting piece 62 in a direction away from the top surface of the main body 60 (minus direction of the Z axis) while fitting the fitting piece with the top surface of the main body 60. It is inserted between 62. As a result, the fitting protrusion 68 is pulled out from the standby hole 66.

As shown in FIGS. 9B and 10, when the standby hole 66 of the main body 60 overlaps with the fitting hole 56 of the main body 52 in XY plan view, the fitting protrusion 68 is attached to the fitting piece 62. It is fitted with the fitting hole 56 by the force. As a result, the first metal member 48 and the second metal member 50 are fitted to each other, and the LED substrate 36 and the relay substrate 40 are electrically connected to each other.

As shown in FIG. 9B, when the first metal member 48 and the second metal member 50 are fitted to each other, the mark hole 58 of the main body 52 is covered with the top surface of the main body 60. Therefore, it cannot be seen from the outside. On the other hand, in a state where the first metal member 48 and the second metal member 50 are not fitted to each other, the mark hole 58 of the main body 52 protrudes to the outside of the top surface of the main body 60, so that it is external. You will be able to see it from. As a result, the user visually confirms whether or not the mark hole 58 of the main body 52 is visible, so that the first metal member 48 and the second metal member 50 are fitted to each other. Whether or not it can be easily determined.

When releasing the fitting between the first metal member 48 and the second metal member 50, the user moves the operation unit 70 of the second metal member 50 in the direction indicated by the arrow R in FIG. Push it down with your fingers. As a result, the fitting protrusion 68 is pulled out from the fitting hole 56, and the fitting between the first metal member 48 and the second metal member 50 is released. In this state, the user can remove the first metal member 48 from the second metal member 50.

[3. Effect, etc.]
Here, the configuration of the liquid crystal module 102 of the image display device 100 according to the comparative example will be described with reference to FIG. 11. FIG. 11 is an enlarged cross-sectional view showing a part of the liquid crystal module 102 of the image display device 100 according to the comparative example.

As shown in FIG. 11, in the liquid crystal module 102 of the image display device 100 according to the comparative example, a plurality of LED substrates 104 are supported by the lower frame 106. Each of the plurality of LED substrates 104 is formed of a rigid substrate. The LED 108 and the connector 110 are mounted on each mounting surface of the plurality of LED boards 104. The connector 110 has a metal terminal 112 and a resin housing 114 that covers the metal terminal 112. The connector 110 of the LED board 104 is electrically connected to the connector 110 of another LED board 104 via a lead wire 116 with a connector.

Since the connector 110 has the housing 114, the height H3 of the connector 110 from the LED substrate 104 is as high as 3 to 5 mm, for example. Therefore, when the reflective sheet 118 is attached to the lower frame 106, the reflective sheet 118 is formed with a raised portion 120 that is locally greatly raised by the connector 110. As a result, a part of the light from the LED 108 is blocked by the raised portion 120 of the reflective sheet 118, which causes a problem that the image displayed on the display panel (not shown) has uneven brightness.

On the other hand, in the present embodiment, the image display device 2 has a display panel 26 that displays an image on the front surface, an LED substrate 36 that is arranged on the back side of the display panel 26 and has an LED 38 mounted on the display panel 26, and a display panel. A relay board 40 arranged on the back side of the 26 and on which the circuit unit 42 is mounted, a first metal member 48 arranged on the LED board 36 and electrically connected to the LED 38, and arranged on the relay board 40. The second metal member 50, which is electrically connected to the circuit unit 42 and is fitted with the first metal member 48, and the light from the LED 38 are displayed on the display panel 26. A reflective sheet 14 for reflecting toward the back surface, which is arranged between the display panel 26, the LED substrate 36, and the relay substrate 40 so as to cover at least the first metal member 48 and the second metal member 50. It is provided with a reflective sheet 14 having electrical insulation. One of the first metal member 48 and the second metal member 50 has a marking hole 58. The mark hole 58 is covered with the other of the first metal member 48 and the second metal member 50 in a state where the first metal member 48 and the second metal member 50 are fitted to each other.

As a result, as shown in FIG. 5, the height H1 of the first metal member 48 from the mounting surface of the LED substrate 36 and the height H2 of the second metal member 50 from the mounting surface of the relay board 40 are reduced. Since it can be kept low, the size of the raised portion 72 formed on the reflective sheet 14 by the first metal member 48 and the second metal member 50 can be kept small. As a result, it is possible to suppress that a part of the light from the LED 38 is blocked by the raised portion 72 of the reflective sheet 14, and it is possible to suppress the occurrence of luminance unevenness in the image displayed on the display panel 26. .. Further, since the first metal member 48 and the second metal member 50 are covered with the electrically insulating reflective sheet 14, the first metal member 48 and the second metal member 50 and other conductive members are covered. It is possible to secure electrical insulation with. Further, by using the first metal member 48 and the second metal member 50 that are mutually fitted as the connection structure between the LED substrate 36 and the relay substrate 40, the LED substrate 36 and the relay substrate 40 are connected to each other. The wiring layout can be simplified. Further, the user can easily check whether or not the first metal member 48 and the second metal member 50 are fitted to each other by visually confirming whether or not the mark hole 58 is visible. It can be determined.

Further, in the present embodiment, each of the LED substrate 36 and the relay substrate 40 has flexibility.

As a result, by bending each of the LED substrate 36 and the relay substrate 40, the stress generated between the first metal member 48 and the second metal member 50 can be released, and the first metal member 48 and the first metal member 48 can be released. It is possible to suppress the occurrence of poor electrical connection with the second metal member 50.

Further, in the present embodiment, the image display device 2 is further arranged on the back side of the display panel 26, and includes a lower frame 10 that supports the LED substrate 36 and the relay substrate 40. The lower frame 10 has a recess 30 for arranging the first metal member 48 and the second metal member 50.

As a result, as shown in FIG. 5, the height H1 of the first metal member 48 from the mounting surface of the LED substrate 36 and the height H2 of the second metal member 50 from the mounting surface of the relay board 40 are reduced. , It can be absorbed by the recess 30 of the lower frame 10. As a result, the size of the raised portion 72 formed on the reflective sheet 14 by the first metal member 48 and the second metal member 50 can be further reduced.

Further, in the present embodiment, the lower frame 10 further has a through hole 31 formed in the recess 30 and arranged so as to overlap the first metal member 48 and the second metal member 50 in a plan view.

As a result, it is possible to prevent the first metal member 48 and the second metal member 50 from coming into contact with the lower frame 10, and the first metal member 48, the second metal member 50, and the lower frame 10 can be prevented from coming into contact with each other. Electrical insulation can be ensured.

Further, in the present embodiment, the connection pin 51 includes a first metal member 48 and a second metal member 50 fitted with the first metal member 48. One of the first metal member 48 and the second metal member 50 has a marking hole 58. The mark hole 58 is covered with the other of the first metal member 48 and the second metal member 50 in a state where the first metal member 48 and the second metal member 50 are fitted to each other.

As a result, the user can easily check whether or not the first metal member 48 and the second metal member 50 are mutually fitted by visually confirming whether or not the mark hole 58 is visible. Can be determined.

(Other embodiments)
As described above, embodiments have been described as an example of the techniques disclosed in this application. However, the technique in the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, etc. are made as appropriate. It is also possible to combine the components described in the above embodiment to form a new embodiment.

Therefore, other embodiments will be exemplified below.

In the above embodiment, the recess 30 is formed in the lower frame 10, but the present invention is not limited to this, and the recess 30 may be omitted from the lower frame 10. Even in this case, the size of the raised portion 72 formed on the reflective sheet 14 by the first metal member 48 and the second metal member 50 can be suppressed to a small size, and the image displayed on the display panel 26 can be displayed. It is possible to suppress the occurrence of uneven brightness.

In the above embodiment, the mark hole 58 is formed as the mark portion in the main body portion 60 of the first metal member 48, but the present invention is not limited to this. The main body 60 of the first metal member 48 may be formed with, for example, a) a mark such as a print or a sticker, b) a protrusion, c) a recess, or d) a notch or the like as a mark.

In the above embodiment, the circuit unit 42 is composed of an electric circuit for supplying electric power, a control signal, and the like to each of the plurality of LEDs 38, but the present invention is not limited to this, and the circuit unit 42 is composed of an arbitrary circuit. You may.

In the above embodiment, the first metal member 48 is composed of a female metal pin and the second metal member 50 is composed of a male metal pin. On the contrary, the first metal member is composed of a male metal pin. The 48 may be composed of a male type metal pin, and the second metal member 50 may be composed of a female type metal pin.

As described above, an embodiment has been described as an example of the technique in the present disclosure. To that end, the accompanying drawings and detailed explanations have been provided.

Therefore, among the components described in the attached drawings and the detailed description, not only the components essential for problem solving but also the components not essential for problem solving in order to exemplify the above technique. Can also be included. Therefore, the fact that those non-essential components are described in the accompanying drawings or detailed description should not immediately determine that those non-essential components are essential.

Further, since the above-described embodiment is for exemplifying the technique in the present disclosure, various changes, replacements, additions, omissions, etc. can be made within the scope of the claims or the equivalent thereof.

The present disclosure is applicable to an image display device for displaying an image. Specifically, the present disclosure is applicable to an image display device such as a liquid crystal television receiver.

2,100 Image display device 4,102 Liquid crystal module 6 Back cover 8 Stand 10,106 Lower frame 12 Backlight 14,118 Reflective sheet 16 Support pin 18 Brightness uniform plate 20 Diffuse plate 22 Optical sheet unit 24 Mold frame 26 Display panel ( LCD cell)
28 Bezel 30 Recess 31 Through hole 32 LED sheet 34 Relay sheet 36,104 LED board 38,108 LED
40 Relay board 42 Circuit part 44 Slit 46 Hole 48 First metal member 50 Second metal member 51 Connection pin 52, 60 Main body 54, 64 Leg 56 Fitting hole 58 Marking hole 62 Fitting piece 66 Standby Hole 68 Fitting protrusion 70 Operation part 72,120 Raised part 110 Connector 112 Metal terminal 114 Housing 116 Lead wire

Claims (4)

A display panel that displays an image on the front and
A first substrate arranged on the back side of the display panel and on which a light source is mounted, and
A second board arranged on the back side of the display panel and on which a circuit unit is mounted,
A first metal member arranged on the first substrate and electrically connected to the light source.
A second metal member arranged on the second substrate, which is electrically connected to the circuit portion and is fitted with the first metal member, and a second metal member.
A reflective member for reflecting light from the light source toward the back surface of the display panel, which is at least the first metal between the display panel and the first substrate and the second substrate. A reflective member, which is arranged so as to cover the member and the second metal member and has electrical insulation, is provided.
One of the first metal member and the second metal member has a mark portion and has a mark portion.
The mark portion is an image display device in which the first metal member and the second metal member are fitted to each other and covered with the other of the first metal member and the second metal member. .. The image display device according to claim 1, wherein each of the first substrate and the second substrate has flexibility. The image display device is further arranged on the back side of the display panel and includes a support member for supporting the first substrate and the second substrate.
The image display device according to claim 2, wherein the support member has a recess for arranging the first metal member and the second metal member. The image display device according to claim 3, wherein the support member is further formed in the recess and has a through hole arranged so as to overlap the first metal member and the second metal member in a plan view.

Images