JP2012058611A - Liquid crystal display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid crystal display device which does not require special members or extra screws and can suppress generation of chattering noise over a long period of time.SOLUTION: A liquid crystal display device A includes a liquid-crystal display panel 1, a panel chassis 3, and a bezel 4. The bezel 4 can be separated into rod-like members 40 which are respectively placed on four edges of the panel chassis 3. Side-surface cover parts 42 of the rod-like members 40 include stopper parts 43 which are inserted and fitted into insertion fitting parts 33 that are formed on side walls 32 and have at least through-holes.

Description

  The present invention relates to a liquid crystal display device.

  In recent years, a liquid crystal display device has been adopted in many television receivers. The liquid crystal display device includes a liquid crystal display panel and a backlight unit disposed on the back surface of the liquid crystal display panel. In the liquid crystal display device, the transmittance (transmission amount) of light from the backlight unit is adjusted by the liquid crystal panel provided in the liquid crystal display panel, and an image is displayed on the front surface of the liquid crystal display panel. The television receiver also includes a liquid crystal display device for displaying video and a speaker for generating sound.

  The liquid crystal display device includes a panel chassis that holds the liquid crystal display panel and the backlight unit, and a bezel that covers the panel chassis so that an image area of the liquid crystal display panel is exposed to the outside.

  In a large-sized liquid crystal display device, since the liquid crystal display panel and the panel chassis themselves are large, variations in dimensions of the liquid crystal display panel and the panel chassis tend to increase. Further, since the liquid crystal display panel and the panel chassis themselves are large, the amount of deformation (for example, deflection) due to their own weight or heat increases. Therefore, large-sized liquid crystal display devices are often designed to have a gap between the members in order to allow variations in dimensions and deformation of the constituent members such as the liquid crystal display panel and the panel chassis to some extent. . However, if such a gap is formed, play occurs in the gap. For example, when vibration from the speaker is transmitted to the play, chatter noise is generated, which leads to deterioration in the quality of the television receiver. .

  Therefore, in order to suppress such chatter noise, in the liquid crystal display device described in Japanese Patent Application Laid-Open No. 2004-133098, a liquid crystal panel and a holding frame (in the present invention, a panel chassis and a bezel) for holding the liquid crystal panel, In order to suppress the occurrence of chatter noise, a buffer material is disposed between the liquid crystal panel and the sandwiching frame body, and the liquid crystal panel and the cushioning material are bonded together to fix the liquid crystal panel to the sandwiching frame body. is doing. Thereby, the play between the liquid crystal panel and the holding frame can be removed, and the occurrence of chatter noise is suppressed.

JP 2004-133098 A

  In the liquid crystal display device disclosed in Japanese Patent Application Laid-Open No. 2004-133098, chattering noise between the liquid crystal panel and the holding frame is suppressed. On the other hand, the panel chassis and the bezel are usually fixed by screws and are firmly fixed. However, in a large liquid crystal display device, the fixing interval between the screws becomes large, and the fixing force by the screws is insufficient between the portions fixed by the screws, and chatter noise is likely to occur in those portions. Likely to happen.

  In order to suppress the occurrence of chatter noise between the panel chassis and the bezel, there is a method of increasing the screwing portions. By increasing the number of screwing portions, it is possible to widen the range in which the force by which the panel chassis and the bezel are crimped by screws is extended, and to suppress the generation of chatter noise. However, when the number of screwing portions is increased, the number of screws increases, the number of parts increases, and the processing of the panel chassis and the screwing portions of the bezel increases, resulting in low workability.

  There has also been proposed a method of mechanically fixing a portion between the panel chassis and the screwed portion of the bezel with an adhesive tape. By fixing the portion between the screwing portions with an adhesive tape, the bezel and the panel chassis can be loosened more easily than screwing, and the occurrence of chatter noise can be suppressed. However, the panel chassis and the bezel become high temperature due to heat from the backlight and the electronic equipment incorporated therein. The adhesive strength of the adhesive tape decreases due to high temperature and aging. Due to the decrease in the adhesive strength of the adhesive tape, the mechanical fixing force between the panel chassis and the bezel may decrease, and chatter noise may be easily generated.

  In view of the above, an object of the present invention is to provide a liquid crystal display device capable of suppressing chatter noise generation over a long period of time without using a special member or increasing the number of screws.

  In order to achieve the above object, the present invention provides a liquid crystal display panel, a panel chassis having a rectangular shape in front view that holds the liquid crystal display panel, a front cover portion that covers the front side of the panel chassis, and a side surface that covers a side wall. A liquid crystal display device including a bezel including a cover portion, wherein the bezel can be divided into rod-like members disposed on each of the four sides of the panel chassis, and the side cover portion of the rod-like member includes: The bar-shaped member is brought into contact with each side of the panel chassis, and has a stop portion that is inserted and fitted into a fitting insertion portion having a through hole formed in the side wall by sliding along each side. It is characterized by being.

  According to this configuration, the rod-shaped members obtained by dividing the bezel can be respectively fixed, so that it is less likely to be limited by dimensional errors as compared to the case where the whole is fixed simultaneously. In addition, since the rod-shaped members that are lighter than the whole bezel are respectively fixed, the occurrence of chatter noise can be suppressed even if the fixing force at one place is small.

  As described above, chatter noise can be efficiently suppressed without increasing the number of constituent members of the liquid crystal display device or without increasing the number of screwing points.

  In the above configuration, the stopper includes a leg projecting inward from the side cover and a presser connected to the leg, and the presser is formed side by side with the side cover. May be. In addition, when the said rod-shaped member is formed with the metal plate, what the said leg part and the said press part are cut and bent can be employ | adopted.

  The said structure WHEREIN: The said press part is a rectangular-shaped member, and the chamfer or the fillet may be formed in the edge part on the opposite side to the said leg part of the said press part. Further, the end portion of the presser portion opposite to the leg portion may include a lead portion that is inclined so as to be separated from the side surface cover portion toward the tip. According to this configuration, since the tip of the presser portion is easily introduced into the through hole, it is possible to increase the reliability of attachment of the stopper to the fitting insertion portion.

  The said structure WHEREIN: The said holding | suppressing part may be provided with the rib which protrudes toward the said side wall, when the said rod-shaped member is attached to the said panel chassis. Thereby, since the said press part presses the said side wall strongly, the said rod-shaped member is firmly fixed to the said panel chassis, and it can suppress chatter sound.

  The said structure WHEREIN: The part which the said press part of the said insertion part contacts is provided with the engagement hole which the said rib engages when the said rod-shaped member is correctly attached to the said panel chassis. There may be. An operator can recognize an impact when the rib enters the engagement hole. Thereby, it can know in advance whether the said rod-shaped member was attached correctly, and generation | occurrence | production of assembly failure can be suppressed. Moreover, since it can be confirmed that the rib is engaged with the engagement hole by visual recognition by using the engagement hole as a through hole, it is possible to suppress the occurrence of assembly failure.

  The said structure WHEREIN: The said rib is good also as a wedge-shaped thing inclined so that it may approach the said side wall toward the leg part side from the front end side of the said holding | suppressing part. In this case, it may be formed by cutting and bending the pressing portion. Such a wedge-shaped rib is engaged with the engagement hole, so that the pressing portion can be prevented from moving in the reverse direction. Thereby, it is possible to firmly attach the rod-shaped member to the panel chassis.

  In the above configuration, a confirmation window having a through-hole shape formed so as to overlap at least a part of the presser portion when the rib is engaged with the engagement hole may be formed on the side wall, When the rib is engaged with the engagement hole, a confirmation marker that overlaps with the edge of the through hole of the fitting insertion portion may be formed on the presser portion.

  When the confirmation window is formed, it is possible to easily confirm whether or not the rib is securely engaged with the engagement portion with the shape of the presser portion visible from the confirmation window. Similarly, it is possible to confirm whether or not the rib is engaged with the engaging portion only by checking that the confirmation marker overlaps with the edge of the through hole. Accordingly, even if the operator cannot recognize the impact when the rib is inserted into the engagement hole, the engagement can be confirmed by visual recognition, so the rod-shaped member is securely attached to the panel chassis. It is possible.

  The said structure WHEREIN: The said insertion part may be provided with the cover part recessed inside. In this configuration, a guide portion that gradually narrows inward may be formed on the cover portion.

  The said structure WHEREIN: The said rod-shaped member is provided with the side surface fixing | fixed part which contacts the side wall of the edge | side with which the panel chassis is attached, and the said side surface fixing | fixed part may be fixed to the said side wall.

  In the above configuration, the rod-shaped member includes a front cover portion that covers the front side of the panel chassis, and one end portion of the front cover portion is connected to an adjacent rod-shaped member as the other end portion. May include a connected portion to be connected to the connecting portion of the adjacent rod-like member on the opposite side.

  According to the present invention, it is possible to provide a liquid crystal display device that can suppress the generation of chatter noise over a long period of time without using a special member or increasing the number of screws.

It is the disassembled perspective view seen from the back side of the television receiver using the liquid crystal display device concerning this invention. It is sectional drawing of an example of the liquid crystal display device concerning this invention. It is a front view of the liquid crystal display device shown in FIG. It is the side view seen from the liquid crystal display device shown in FIG. It is the expanded sectional view cut | disconnected by the VV line | wire of the liquid crystal display device shown in FIG. It is a figure which shows the modification of the stop part used for the liquid crystal display device concerning this invention. It is sectional drawing cut | disconnected by the same line | wire as FIG. 5 of the other example of the stop part used for the liquid crystal display device concerning this invention. It is sectional drawing to which the stop part and fitting insertion part of the other example of the liquid crystal display device concerning this invention were expanded. It is sectional drawing cut | disconnected by the same line | wire as FIG. 5 of the other example of the stop part used for the liquid crystal display device concerning this invention. It is sectional drawing cut | disconnected by the same line | wire as FIG. 5 of the other example of the stop part used for the liquid crystal display device concerning this invention. It is a side view of the other example of the stop part used for the liquid crystal display device concerning this invention. It is sectional drawing cut | disconnected by the XII-XII line | wire of the stop part shown in FIG. It is a side view of the other example of the stop part used for the liquid crystal display device concerning this invention. It is a side view of the other example of the insertion part used for the liquid crystal display device concerning this invention. It is XV-XV sectional drawing of the insertion part used for the liquid crystal display device concerning this invention. It is a top view of the other example of the liquid crystal display device concerning this invention. It is the side view seen from the bottom face side of the liquid crystal display device shown in FIG. It is a top view of the further another example of the liquid crystal display device concerning this invention. It is a side view from the bottom face side of the liquid crystal display device shown in FIG.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a television receiver using a liquid crystal display device according to the present invention as seen from the back side. The television receiver TV shown in FIG. 1 includes a front cabinet Fc and a rear cabinet Rc, which are exterior casings, a liquid crystal display device A arranged in a space surrounded by the front cabinet Fc and the rear cabinet Rc, and a front cabinet Fc. And a speaker Sp disposed at a lower portion of the liquid crystal display device Lc in a space surrounded by the rear cabinet Rc, and a stand St disposed outside the rear cabinet Rc.

  A liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view of an example of a liquid crystal display device according to the present invention. In the liquid crystal display device shown in FIG. 2, the top is the front and the bottom is the back, as shown in the figure. As shown in FIG. 2, the liquid crystal display device A includes a liquid crystal display panel 1, a backlight unit 2 disposed on the back surface of the liquid crystal display panel 1, and a panel chassis 3 that holds the liquid crystal display panel 1 and the backlight unit 2. And the bezel 4 which covers the outer peripheral part and side part of the front of the panel chassis 3 is provided.

  The liquid crystal display panel 1 is formed between an array substrate including switching elements such as TFTs (thin film transistors), a counter substrate disposed opposite to the array substrate and formed with a color filter, and the array substrate and the counter substrate. And a liquid crystal layer filled with liquid crystal. The liquid crystal display panel 1 is formed on a substrate different from the TFT and the color filter, but the color filter is formed on the array substrate similarly to the TFT, and only the transparent electrode is formed on the counter substrate. It may be.

  The backlight unit 2 includes a box-type backlight chassis 21 having an opening on the front side, a lamp 22 disposed in the backlight chassis 21, lamp sockets 23 that support both ends of the lamp 22, and the backlight chassis 21. A lamp clip 24 that is fixed to the lamp 22 and supports an intermediate portion of the lamp 22, a lamp holder 25 that is attached to the backlight chassis 21 and holds the lamp 22 and the lamp socket 23 from the front side, and an optical sheet that diffuses light from the lamp 22 A unit 26 and a sheet presser 27 disposed on the lamp holder 25 and pressing the outer periphery of the optical sheet unit 26 are provided.

  Note that the backlight unit 2 is a direct type backlight in which lamps 22 (light sources) are arranged side by side on the back surface of the optical sheet unit 26, but the light source (fluorescent light) disposed to face the side surfaces of the light guide plate and the light guide plate. An edge-type backlight including a lamp, an LED lamp, or the like may be used.

  The backlight chassis 21 is a box-shaped member having an opening formed by cutting and bending a metal plate. In addition to the one obtained by cutting and bending the metal plate, an integral molded body of resin may be used. The backlight chassis 21 has a rectangular bottom surface. In the backlight unit 2 shown in FIG. 2, the lamp 22 is a linear fluorescent lamp such as a cold cathode tube, but is not limited to this. For example, the lamp 22 has a configuration using a light emitting element such as an LED lamp. There may be. The lamps 22 are arranged on the bottom surface of the backlight chassis 21 in a direction orthogonal to the longitudinal direction of the lamps 22. Although not shown in the figure, the backlight chassis 21 is provided with a reflecting member that reflects the light emitted from the lamp 22 toward the backlight chassis 21 toward the optical sheet unit 24. As the reflecting member, a member in which a white sheet is attached to the backlight chassis 21 is often used, but the reflecting member is not limited thereto.

  The lamp socket 23 supports both ends of the lamp 21 and supplies the lamp 21 with power for light emission. The lamp holder 25 is disposed on the front side of the backlight chassis 21 and covers the front side of the lamp socket 23. Further, a step is formed on the front side of the lamp holder 25, and the optical sheet unit 26 is arranged on the step via a sheet presser 27.

  The lamp holder 25 is formed of a white resin in order to reflect light from the lamp 21 efficiently. However, the lamp holder 25 is not limited to this, and a lamp that can efficiently reflect light can be widely used. The sheet retainer 27 is an elastically deformable buffer member, and is sandwiched between the lamp holder 25 and the panel chassis 3 when the backlight unit 2 is attached to the panel chassis 3, and excessive stress is applied to the optical sheet unit 26. Is preventing the action.

  The lamp clip 24 is formed of a white resin in order to efficiently reflect the light emitted from the lamp 21. However, the lamp clip 24 is not limited to this, and a lamp that can efficiently reflect light can be widely used. . As shown in FIG. 2, the lamp socket 23 holds the intermediate portion of the lamp 21, supports the optical sheet unit 26, and suppresses the optical sheet unit 26 from being bent.

  The optical sheet unit 26 is a laminated body in which optical sheets such as a diffusion sheet and a lens sheet are stacked. Note that the diffusion sheet is a sheet that diffuses incident light inside. When light is incident, the light is diffused and emitted as planar light with less luminance unevenness. The lens sheet is a sheet that deflects (condenses) light emission characteristics. When light is incident, the light is condensed and the light emission luminance per unit area is improved. In addition, optical sheets other than these may be used.

  The panel chassis 3 is a member manufactured by integrally molding resin. The panel chassis 3 includes a panel support part 31 having a rectangular shape in front view and having an opening 310 in the center, and a side wall 32 integrally formed on the back side of the panel support part 31. The side wall 32 is connected to the peripheral edge portion of the panel support portion 31. The front side of the panel support 31 is provided with a step 311 so as to be adjacent to the opening 310. The liquid crystal display panel 1 is attached to the step 311 via the panel presser 11. The panel retainer 11 supports the edge of the liquid crystal display panel 1. That is, the liquid crystal display panel 1 is attached to the panel chassis 3 via the panel retainer 11 at the edge.

  The backlight unit 2 is disposed in a portion surrounded by the side wall portion 32 of the panel chassis 3. At this time, the optical sheet unit 26 sandwiched between the sheet holders 27 is sandwiched between the lamp holder 25 and the panel chassis 3. The sheet presser 27 can disperse force by being compressed, and can suppress an excessive stress from acting on the optical sheet unit 26. Further, the sheet pressing portion 27 can absorb the roughness (unevenness) of the surface of the lamp holder 25 and / or the panel chassis 3 and suppress the optical sheet unit 26 from being tilted or bent.

  As shown in FIG. 2, the bezel 4 includes a front cover portion 41 that covers the front surface of the panel chassis 3 and a side surface cover portion 42 that covers the side surface of the panel chassis 3. An opening 410 is formed in the front cover portion 41. As shown in FIG. 2, the front cover portion 41 presses the panel retainer 11 at the edge portion of the opening 410. The liquid crystal display panel 1 is sandwiched between the panel chassis 3 and the bezel 4. At this time, the panel retainer 11 is in direct contact with the panel chassis 3 and the bezel 4, and the panel retainer 11 is a member capable of buffering the force by being deformed. The force acting on 1 is relaxed. Further, when the surface of the panel chassis 3 and / or the bezel 4 that faces the liquid crystal display panel 1 is not smooth (there is unevenness, is curved, etc.), the panel retainer 11 is deformed, so that the liquid crystal display panel The stress concentration in a part of 1 is suppressed. Note that an area (image area) for displaying an image on the liquid crystal display panel 1 is exposed to the outside through the opening 410.

  The side cover portion 42 of the bezel 4 is disposed so as to contact the side wall 32 of the panel chassis 3. As shown in FIG. 2, the liquid crystal display device A is assembled by tightening the front cover 41, the panel cover 3, the lamp holder 25, and the backlight chassis 21 of the bezel 4 with screws Sc. . The screw Sc is inserted from the front cover 41 of the bezel 4 and is screwed on the backlight chassis 21 side. At this time, a through hole through which the screw Sc passes is formed in the front cover portion 41, the panel cover 3, and the lamp holder 25. The backlight chassis 21 may be formed with a female screw into which the screw Sc is screwed, or may be provided with a nut that is formed with a through hole and screwed into a portion protruding from the through hole. .

  The principle of image display by the assembled liquid crystal display device A as described above is as follows. First, light emitted from the lamp 22 and light emitted from the lamp 22 and reflected by the reflecting member enter the optical sheet unit 26. The light incident on the optical sheet unit 26 is diffused and scattered when passing through the optical sheet unit 26, and is emitted from the optical sheet unit 26 as planar light having uniform or substantially uniform luminance within the surface.

  Thereafter, the light emitted from the optical sheet unit 26 passes through the opening 310 of the panel chassis 3 and enters the liquid crystal display panel 1. In the liquid crystal display panel 1, by applying a voltage to the liquid crystal layer, the alignment direction of the liquid crystal filled in the liquid crystal layer is changed to adjust the light transmittance. The adjustment of the light transmittance is performed for each pixel which is the minimum unit when displaying an image on the liquid crystal display panel 1. Then, the light whose transmittance has been adjusted is converted into light of each wavelength of red (R), green (G), and blue (B) by a color filter provided in the liquid crystal display panel 1. The liquid crystal display device A forms an image by combining the RGB light. This image is formed in the image area of the liquid crystal display panel 1 and can be observed from the opening 410.

(First embodiment)
Next, the bezel and the panel chassis, which are the main parts of the present invention, will be described in detail with reference to the drawings. 3 is a front view of the liquid crystal display device shown in FIG. 2, FIG. 4 is a side view of the liquid crystal display device shown in FIG. 3, and FIG. It is the expanded sectional view cut | disconnected by the line. As shown in FIG. 3, in the liquid crystal display device A, the front cover portion 41 of the bezel 4 is fixed with a plurality of screws Sc. The front cover 41 is fixed at the four corners with screws Sc. However, the present invention is not limited to this, and the location and number of the bezels 4 that can be securely screwed to the panel chassis 3 are also possible.

  In the liquid crystal display device A, the screws Sc are inserted into the through holes or screw holes formed in the bezel 4, the panel chassis 3, the lamp holder 25, and the backlight chassis 21 from the front side. It only requires work and requires less time and labor for assembly. On the other hand, as shown in FIG. 5, the side cover portion 42 of the bezel 4 and the side wall 32 of the panel chassis 3 are in contact with each other. However, since the front cover 42 is configured to be screwed, when vibration (for example, vibration from the speaker Sp shown in FIG. 1) is transmitted to the side cover 42, the side cover 42 and the side wall 32 collide with each other. Chatter noise may occur. Therefore, in the liquid crystal display device A, the side cover portion 42 is pressed against the side wall 32 by inserting the stopper portion 43 formed on the side surface cover portion 42 into the fitting insertion portion 33 formed on the side wall 32, The occurrence of chatter noise is suppressed.

  As shown in FIG. 3, the bezel 4 can be divided into four bar-shaped members 40, bar-shaped members 401 and 402 that constitute upper and lower long sides, and bar-shaped members 403 and 404 that constitute left and right short sides. It is a frame. The rod-shaped member 40 is formed by cutting and bending a metal plate. In the following description, the rod-shaped member 401 constituting the long side of the lower portion of the bezel 4 will be described, but the other rod-shaped members have the same configuration, and substantially the same parts are denoted by the same reference numerals. It is.

  A method for pressing the side cover portion 42 of the rod-shaped member 401 against the side wall 32 will be described in detail. The rod-shaped member 401 includes three stop portions 43 that are integrally formed on the side wall 32 side of the side cover portion 42. Note that the number of the stoppers 43 is not limited to three, but varies depending on the size of the liquid crystal display device A, and the side cover 42 is securely pressed against the side wall 32 to suppress chatter noise. It is the number that can be.

  The stop portion 43 protrudes (bends) inward from the side cover portion 42, and extends (bends) from the tip of the leg portion 431 in the direction along the side cover portion 42, and has a thickness with the side cover portion 42. And a presser part 432 arranged in the direction. And the insertion part 33 in which the stop part 43 is inserted is provided with the cover part 331 which has the rectangular through-hole 330 and covers a part of inner side. The cover part 331 has at least the same length as the presser part 432 of the stopper part 43. The cover portion 331 covers the through hole 330, and an opening 332 through which the presser portion 432 passes is formed on the side portion.

  When the rod-shaped member 401 is attached to the panel chassis 3, the presser portion 432 of the stopper portion 43 is inserted and brought into contact with the cover portion 331 of the insertion portion 33. In this state, the rod-shaped member 401 is slid so that the presser portion 432 penetrates the opening 332. As a result, the pressing portion 432 passes through the opening 332 and slides while pressing the inner surface of the side wall 32, and the pressing portion 432 presses the inner surface of the side wall 32. At this time, the side surface cover portion 42 of the rod-shaped member 401 is urged in a direction in which it is pressed against the side wall 32. Thereby, even if the side cover part 42 is in strong contact with the side wall 32 and vibration is transmitted to the side cover part 42 from the vibration source (speaker Sp), the side cover part 42 is unlikely to be separated from the side wall 32 and chatter noise is generated. Hateful.

  In addition, the fitting insertion part 33 of the side wall 32 is formed so as to be shifted in the direction opposite to the sliding direction when the rod-shaped member 401 is mounted in consideration that the rod-shaped member 401 is slid and attached to the panel chassis 3. Then, after attaching the rod-shaped member 401, as shown in FIG. 3, the rod-shaped member 401 is attached to the short side adjacent to the left (next left) in the clockwise direction when viewed from the front of the lower long side to which the rod-shaped member 401 is attached. A rod-like member 403 is attached. Thus, clockwise, the rod-shaped member 402 is attached to the upper long side, and the rod-shaped member 404 is sequentially attached to the right short side. After the four rod-shaped members 40 (401, 402, 403, 404) are attached to the panel chassis 3, the portions of the front cover portions 41 of the respective rod-shaped members 40 that are in contact with the corners of the panel chassis 3 are stopped with screws Sc. The rod-shaped member 40 is fixed. In addition, attachment of the rod-shaped member 40 (401, 402, 403, 404) is not limited to this order.

  Further, in the liquid crystal display device A illustrated in FIG. 5, the cover portion 331 that covers the inside of the fitting insertion portion 33 is provided. However, the cover portion 331 may not be formed. In addition, since the opening 332 can be made smaller when the cover portion 331 is formed, the strength of the side wall 32 can be ensured, and deformation (warping or bending) of the side wall 32 can be suppressed. .

(Second Embodiment)
A rectangular plate-like member is adopted as the presser part 432, but is not limited to this. Another example of the stopper used in the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 6 is a view showing a modification of the stopper used in the liquid crystal display device according to the present invention. As shown in FIG. 6A, the presser portion 432 includes a chamfer 4321 that linearly narrows toward the tip. By providing the chamfer 4321, the presser portion 432 can be accurately guided to the opening 332 of the fitting insertion portion 33. As a result, the stopper 43 can be securely inserted into the fitting insertion portion 33 during attachment, and the rod-like member 401 can be firmly attached to the panel chassis 3. Further, as shown in FIG. 6B, the same effect can be obtained even if a fillet 4322 is formed instead of the chamfer 4321 at the tip of the pressing portion 432.

(Third embodiment)
Further, as shown in FIG. 5, the pressing portion 432 is formed in a flat plate shape, but is not limited to this. Still another example of the stopper used in the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 7 is a cross-sectional view taken along the same line as FIG. 5 of another example of the stopper used in the liquid crystal display device according to the present invention. As shown in FIG. 7, the pressing portion 432 is formed with a lead portion 4323 that is inclined so that the tip portion is separated from the side cover portion 42. By forming the lead portion 4323, the tip of the presser portion 432 can be easily inserted into the fitting insertion portion 33. As a result, the rod-shaped member 401 can be easily and reliably attached to the opening 332 of the panel chassis 3. Since the rod-like member 401 is securely attached to the panel chassis 3, the occurrence of chatter noise can be suppressed.

(Fourth embodiment)
Another example of the stopper and the insertion portion of the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 8 is an enlarged cross-sectional view of a stopper and a fitting portion of another example of the liquid crystal display device according to the present invention. The stop portion 43 shown in FIG. 8 includes a rib 433 that protrudes toward the side surface cover portion 42 on the distal end side of the presser portion 432. Further, when the bar-shaped member 401 is attached to the panel chassis 3, the engagement hole 34 with which the rib 433 engages is provided at a position overlapping the rib 433 of the side wall 32. Thus, when the rod-shaped member 401 is attached to the panel chassis 3, there is an impact when the rib 433 is engaged with the engagement hole 34. By detecting this impact, the assembly operator can recognize that the bar-shaped member 401 has been correctly attached to the panel chassis 3.

  Further, it is possible to recognize that the rib 433 is attached to the panel chassis 3 by checking the rib 433 from the engagement hole 34. In this case, it is possible to facilitate recognition by setting the rib 433 to a color different from that of the presser portion 432. Moreover, since the rod-shaped member 401 is securely attached to the panel chassis 3, the occurrence of chatter noise can be suppressed. In addition, the rib 433 may be a convex portion obtained by extrusion-molding the presser portion 432, or a member prepared separately may be attached.

(Fifth embodiment)
Another example of the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 9 is a cross-sectional view taken along the same line as FIG. 5 of another example of the stopper used in the liquid crystal display device according to the present invention. As shown in FIG. 9, the rib 434 is formed in a wedge shape that widens away from the presser portion 431 from the front end side of the presser portion 432 toward the leg portion 431 side. Thereby, when the presser part 432 passes through the opening 332, the slope of the rib 434 is pressed by the opening 332, and the leg part 431 and the presser part 432 are deformed so as to be separated from the side wall 32. Further, since the rib 434 is wedge-shaped, the rib 434 is caught by the engagement hole 34 after being engaged with the engagement hole 34, so that the stopper 43 is difficult to be removed from the fitting insertion portion 33. Thereby, the rod-shaped member 401 is hard to come off from the panel chassis 3, and the occurrence of chatter noise can be suppressed. In the case of this configuration, it is possible to release the engagement by pushing the rib 434 from the engagement hole 34, and it is possible to easily remove the stop portion 43 from the fitting insertion portion 33.

(Sixth embodiment)
Another example of the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 10 is a cross-sectional view taken along the same line as FIG. 5 of another example of the stopper used in the liquid crystal display device according to the present invention. The rib 435 shown in FIG. 10 is formed by cutting and raising the pressing portion 432 so as to have the same inclination as the rib 434 shown in FIG. In other words, the rib 435 has a shape in which the rectangular leg portion 431 side in which three continuous cuts are made is caused on the side surface cover portion 42 side. With such a wedge shape, the rib 435 engages with the engagement hole 34 as in the case of the rib 434, so that the stopper 43 is difficult to be removed from the fitting insertion portion 33. Thereby, the rod-shaped member 401 can be fixed to the panel chassis 3, and generation | occurrence | production of chatter sound can be suppressed. In this configuration, when the rib 435 is pushed from the engagement hole 34, the rib 435 itself is deformed, so that the engagement between the engagement hole 34 and the rib 435 can be released, and the stopper 43 is inserted. It can be easily removed from the portion 33.

(Seventh embodiment)
Another example of the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 11 is a side view of another example of the stopper used in the liquid crystal display device according to the present invention, and FIG. 12 is a cross-sectional view taken along line XII-XII of the stopper shown in FIG. As shown in FIGS. 11 and 12, a confirmation window 35 for confirming the pressing portion 432 is formed on the side wall 32 in addition to the engagement hole 34. The confirmation window 35 is a through hole so that the position of the pressing portion 432 can be confirmed from the outside of the side wall 32. The confirmation window 35 is formed so that the tip of the presser portion 432 covers a predetermined region when the stopper portion 43 is attached to the fitting insertion portion 33 and the rib 434 is securely engaged with the engagement hole 34. .

  An operator may not be able to feel an impact when the rib 434 and the engagement hole 34 are engaged with each other by wearing gloves or holding the rod-shaped member 401 with a jig. If this impact cannot be felt, it is difficult to confirm whether the bar-shaped member 401 is correctly attached to the panel chassis 3. Even in this case, by checking the inside of the confirmation window 35, it can be readily confirmed whether or not the rod-shaped member 401 is correctly attached. Thereby, since the rod-shaped member 401 can be correctly fixed to the panel chassis 3, generation | occurrence | production of chatter sound can be suppressed.

(Eighth embodiment)
Another example of the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 13 is a side view of another example of a stopper used in the liquid crystal display device according to the present invention. The holding portion 432 shown in FIG. 13 is provided with a confirmation marker 436 arranged so as to overlap with the edge of the opening 332 when the stopper portion 43 is accurately attached to the fitting insertion portion 33. The confirmation marker 436 is formed so as to overlap the edge of the opening 332 when viewed from the side when the stopper 43 is accurately attached to the fitting portion 33.

  For example, even if the position of the presser portion 432 in the confirmation hole 35 cannot be confirmed because another component member is disposed, the rod-shaped member 401 can be confirmed by confirming that the confirmation marker 436 overlaps the opening. Can be confirmed to be securely attached to the panel chassis 3. Thereby, since the rod-shaped member 401 can be fixed correctly, generation | occurrence | production of chatter sound can be suppressed. Note that both the confirmation hole 35 and the confirmation marker 436 may be provided. By visually recognizing both the confirmation hole 35 and the confirmation marker 436, the attachment of the rod-shaped member 401 to the panel chassis 3 can be confirmed more reliably. Moreover, even if any one is a case where visual recognition is difficult, the attachment to the rod-shaped member 401 and the panel chassis 3 can be confirmed.

(Ninth embodiment)
Another example of the liquid crystal display device according to the present invention will be described with reference to the drawings. FIG. 14 is a side view of another example of the insertion portion used in the liquid crystal display device according to the present invention, and FIG. 15 is an XV-XV sectional view of the insertion portion used in the liquid crystal display device according to the present invention. . As shown in FIGS. 14 and 15, the cover portion 331 of the fitting insertion portion 33 is a concave portion that protrudes inward, and a guide portion 333 that is inclined so that the concave portion narrows inward is formed. With this guide portion 333, the presser portion 432 can be accurately positioned at the center of the opening 332 when the stopper portion 43 is inserted and fitted into the fitting insertion portion 33. Accordingly, the stopper 43 can be easily and accurately inserted and fitted into the fitting insertion portion 33, and the rod-like member 401 can be reliably fixed to the panel chassis 3. Thereby, generation | occurrence | production of chatter sound can be suppressed.

(10th Embodiment)
Another example of the liquid crystal display device according to the present invention will be described with reference to the drawings. 16 is a plan view of another example of the liquid crystal display device according to the present invention, and FIG. 17 is a side view seen from the bottom side of the liquid crystal display device shown in FIG. The liquid crystal display device B shown in FIG. 16 has the same configuration as the liquid crystal display device A except that the shape of the bezel 4 is different, and substantially the same parts are denoted by the same reference numerals. Further, description of substantially the same part is omitted.

  As shown in FIG. 16, the rod-shaped members 401, 402, 403, and 404 of the bezel 4 are orthogonal to both the front cover portion 41 and the side cover portion 42 at the rear end in the sliding direction when the panel chassis 3 is attached. A side fixing portion 44 is provided. After the rod-shaped members 401, 402, 403, and 404 are attached to the panel chassis 3, the four corners are fixed with screws Sc from the front side, and the side surface fixing portion 44 is fixed to the side wall 32 with screws Sc. As shown in FIG. 8, the side surface fixing portion 44 of the rod-like member 403 is fixed to the side wall 32 on the bottom surface side of the panel chassis 3 with screws. Similarly, the side surface fixing portion 44 of the rod-shaped member 402 is screwed to the left side wall 32, the side surface fixing portion 44 of the rod-shaped member 404 is screwed to the upper side wall 32, and the side surface fixing portion 44 of the rod-shaped member 401 is screwed to the left side wall 32. It is fixed with. In addition, when the rod-shaped member 40 can be firmly fixed only by screwing the side surface fixing portion 44, screwing on the front side may be omitted.

  As described above, by fixing the side surface fixing portion 44 with screws, it is possible to prevent the rod-shaped members 401, 402, 403, and 404 from sliding in the direction of detachment. As a result, the bezel 4 can be firmly attached to the panel chassis 3, and chatter noise can be suppressed. As shown in FIGS. 16 and 17, the length in the longitudinal direction of the side cover portion 42 of each bar-like member 40 is such that the bar-like member 40 has a side face with respect to the length of each corresponding side of the panel chassis 3. The fixed portion 44 is formed shorter than the width. Further, as shown in the drawing, the width of the side fixing portion 44 is the same as the width of the front cover portion 41.

(Eleventh embodiment)
Still another example of the liquid crystal display device according to the present invention will be described with reference to the drawings. 18 is a plan view of still another example of the liquid crystal display device according to the present invention, and FIG. 19 is a side view from the bottom side of the liquid crystal display device shown in FIG. The liquid crystal display device C shown in FIG. 18 has the same configuration as the liquid crystal display device B except that the shape of the rod-like member 40 is different, and substantially the same parts are denoted by the same reference numerals. Further, description of substantially the same part is omitted.

  As shown in FIGS. 18 and 19, the bezel 4 of the liquid crystal display device C has a shape in which the front cover portion 41 of the rod-shaped member 40 overlaps at the corner portion. If it demonstrates in detail, the connection part 45 extended in the longitudinal direction is formed in the edge part on the opposite side to which the side surface fixing part 44 of the front cover part 41 of the rod-shaped member 40 is connected. In addition, the portion where the side surface fixing portion 44 of the front cover portion 41 is connected is raised counterclockwise and raised to the front side so that the connecting portion 45 of the bar-like member 40 disposed next to it can be connected to the back side. A connected portion 46 is formed.

  As shown in FIG. 18, after the rod-shaped member 401 is attached to the lower long side of the panel chassis 3, the rod-like member 403 is attached to the left short side. At this time, the connecting portion 45 of the rod-shaped member 401 is connected to the back side of the connected portion 46 of the rod-shaped member 403. Thus, the connecting portion 45 of the rod-shaped member 403 is on the back side of the connected portion 46 of the rod-shaped member 402, the connecting portion 45 of the rod-shaped member 402 is on the back side of the connected portion 46 of the rod-shaped member 404, and Each of the connecting portions 45 is located on the back side of the connected portion 46 of the rod-shaped member 401. In this state, the side surface fixing portions 44 of the rod-shaped members 401, 402, 403, and 404 are fixed with screws Sc. Thus, by attaching to the panel chassis 3 so that a part of rod-shaped member 40 may overlap, the bezel 4 is hard to float or shift. In addition, since the four corner portions that are the connecting portions can be reinforced, deformation of the bezel 4 itself can be suppressed, and generation of chatter noise can be suppressed accordingly. In addition, you may make it tighten the part in which the connection part 45 and the to-be-connected part 46 overlap with a screw. Thereby, the bezel 4 can be fixed more firmly.

  In each of the above-described embodiments, the rod-shaped member 40 (401, 402, 403, 404) is formed by cutting and bending a metal plate. However, the present invention is not limited to this, and metal pultrusion molding is used. After forming the bar-shaped member having the L-shaped cross section, the stop portion 43 may be formed on the side surface cover portion 42. Alternatively, it may be formed by integral molding of resin. It is possible to widely adopt a configuration that can firmly cover the peripheral edge portion of the panel support portion 31 and the side wall 32 on each of the four sides of the panel chassis 3. Note that the rod-shaped member 40, that is, the bezel 4 is made of metal and the bezel 4 is grounded, thereby reducing the influence of static electricity and unnecessary radiation (EMI) on the liquid crystal display unit 1 and the backlight unit 2. Is possible.

  The present invention can be used as a display device for devices such as a thin television device, a thin display device, and a mobile phone.

DESCRIPTION OF SYMBOLS 1 Liquid crystal display panel 11 Panel holder 2 Backlight unit 21 Backlight chassis 22 Lamp 23 Lamp socket 24 Lamp clip 25 Lamp holder 26 Optical sheet unit 27 Sheet holder 3 Panel chassis 31 Panel support part 311 Step 32 Side wall 33 Insertion part 330 Through Hole 331 Cover part 332 Opening 333 Guide part 34 Engagement part 35 Confirmation window 4 Bezel 40 Bar-shaped member 41 Front cover part 42 Side cover part 43 Stop part 431 Leg part 432 Presser part 433 Rib 434 Rib 435 Rib 436 Confirmation marker

Claims (15)

A liquid crystal display panel;
A panel chassis having a rectangular shape in front view holding the liquid crystal display panel;
A liquid crystal display device comprising a front cover portion covering the front side of the panel chassis and a bezel including a side cover portion covering a side wall,
The bezel can be divided into rod-like members arranged on each of the four sides of the panel chassis,
The side surface cover portion of the rod-shaped member is brought into contact with each side of the panel chassis and is slid along the side, thereby fitting the insertion portion including a through hole formed in the side wall. A liquid crystal display device comprising a stop portion to be inserted and fitted. The stop portion includes a leg portion protruding inward from the side surface cover portion, and a presser portion connected to the leg portion,
The liquid crystal display device according to claim 1, wherein the pressing portion is arranged side by side in a thickness direction of the side surface cover portion and the side surface cover portion.   The liquid crystal display device according to claim 2, wherein the pressing portion is a rectangular member, and a chamfer is formed at an end portion of the pressing portion opposite to the leg portion.   The liquid crystal display device according to claim 2, wherein the pressing portion is a rectangular member, and a fillet is formed at an end of the pressing portion opposite to the leg portion.   5. The liquid crystal according to claim 2, wherein an end portion of the presser portion opposite to the leg portion is provided with a lead portion that is inclined so as to be separated from the side cover portion toward the tip. Display device.   The liquid crystal display device according to claim 2, wherein the pressing portion includes a rib that protrudes toward the side wall when the rod-shaped member is attached to the panel chassis.   The portion of the insertion portion that is in contact with the presser portion is provided with an engagement hole with which the rib is engaged when the rod-like member is accurately attached to the panel chassis. Liquid crystal display device.   The liquid crystal display device according to claim 7, wherein the rib has a wedge shape that is inclined so as to approach the side wall from the distal end side to the leg portion side of the pressing portion.   The liquid crystal display device according to claim 8, wherein the rib is formed by cutting and bending the pressing portion.   10. The liquid crystal according to claim 9, wherein a confirmation window having a through-hole shape is formed on the side wall so as to overlap with at least a part of the pressing portion when the rib is engaged with the engagement hole. Display device.   The said holding | suppressing part is provided with the confirmation marker formed so that it might overlap with the edge part of the said through-hole of the said insertion part, when the said rib engages with the said engagement hole. 10. A liquid crystal display device according to 10.   The liquid crystal display device according to claim 1, wherein the insertion portion includes a cover portion recessed inward.   The liquid crystal display device according to claim 12, wherein the cover portion is formed with a guide portion that gradually narrows inward. The bar-shaped member includes a side fixing portion that contacts a side to which the panel chassis is attached and a side wall of an adjacent side,
The liquid crystal display device according to claim 1, wherein the side surface fixing portion is fixed to the side wall.   The one end portion of the front cover portion includes a connecting portion connected to an adjacent rod-shaped member, and the other end portion includes a connected portion connected to a connecting portion of an adjacent rod-shaped member on the opposite side. The liquid crystal display device according to claim 1.

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