JP5123416B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and more particularly to a technique effective when applied to a display device that integrally holds components such as a display panel with a frame member.

  Conventionally, there is a liquid crystal display device using a liquid crystal display panel as a display device for displaying images and videos. The liquid crystal display panel is a display panel in which a liquid crystal material (liquid crystal layer) is sealed between a first substrate called a TFT substrate and a second substrate called a counter substrate.

  In addition to the liquid crystal display panel, the liquid crystal display device includes a printed circuit board for inputting a video data signal to a video signal line of the liquid crystal display panel (TFT substrate), and a scanning signal of the liquid crystal display panel (TFT substrate). A printed circuit board for inputting a scanning signal to a line, a printed circuit board for inputting a control signal to each of the two printed circuit boards (generally called a TCON board), and the like. In the case of a transmissive or transflective liquid crystal display device, a light source (backlight) or the like is disposed behind the liquid crystal display panel as viewed from an observer.

  In the liquid crystal display device, the liquid crystal display panel, a plurality of printed circuit boards, a backlight, and other components are integrally held by a frame member. The frame member includes, for example, a first frame member (generally referred to as a lower frame) disposed on the rear side of the liquid crystal display panel and the light source viewed from the observer, and the liquid crystal display panel viewed from the observer. It consists of a second frame member (generally called the upper frame) arranged on the front side.

  At this time, the liquid crystal display device is integrally held so that the liquid crystal display panel and the light source are sandwiched between the lower frame and the upper frame. Further, for example, a support member made of molding resin is annularly arranged on the outer peripheral portion of the liquid crystal display panel viewed from the observer, and the liquid crystal display panel has an outer peripheral portion formed by the upper frame and the support member. It is held so as to sandwich it. The optical sheet such as the light source and the diffusion plate disposed between the liquid crystal display panel and the light source is held so as to be sandwiched between the lower frame and the support member.

  The printed circuit board for inputting the video data signal to the video signal line of the liquid crystal display panel (TFT substrate) includes, for example, a plurality of driver ICs on which a video data signal input to each video signal line is generated. Each of the flexible printed circuit boards and a rigid printed circuit board for inputting a control signal or the like to the plurality of flexible circuit boards. At this time, the rigid printed circuit board is attached and held, for example, on the outer peripheral side surface of the lower frame or the support member.

  In addition, the printed circuit board for inputting the scanning signal to the scanning signal line of the liquid crystal display panel (TFT substrate) includes, for example, a plurality of driver ICs on which a video data signal to be input to each scanning signal line is mounted. And a rigid printed circuit board for inputting a control signal or the like to the plurality of flexible circuit boards. Also at this time, the rigid printed circuit board is attached and held, for example, on the outer peripheral side surface of the lower frame or the support member.

  In a recent liquid crystal display device, the printed circuit board for inputting the scanning signal may be composed of only the flexible printed circuit board, for example. In this case, a control signal or the like is input to the flexible printed circuit board from, for example, a printed circuit board for inputting the video data signal through wiring formed on the liquid crystal display panel (TFT substrate). .

  The printed circuit board called the TCON board is disposed, for example, behind the lower frame as viewed from the observer, and is attached to and held on the bottom surface of the lower frame. At this time, the wiring of the TCON substrate and the wiring of the rigid printed circuit board for inputting the video data signal to the video signal line of the liquid crystal display panel (TFT substrate) are connected by, for example, a flexible printed cable (FPC). ing.

  When assembling the liquid crystal display device having such a configuration, for example, first, a reflecting plate, a light source, a diffusion plate, and the like are arranged on the lower frame, and then the support member is screwed to the lower frame. Next, for example, the liquid crystal display panel to which the flexible printed circuit board or the rigid printed circuit board is attached is installed on the support member, and the rigid printed circuit board is attached to the outer peripheral side surface of the support member. Next, for example, the wiring of the TCON board and the wiring of the rigid printed circuit board attached to the outer peripheral side surface of the support member are connected by a flexible printed cable. Next, the upper frame is installed on the liquid crystal display panel, and, for example, the upper frame and the support member, or the upper frame and the lower frame are screwed. Finally, after the TCON substrate is attached to the bottom surface of the lower frame, for example, a cover member for protecting the TCON substrate is attached to the lower frame.

  By the way, the liquid crystal display device having the above-described structure is often manually assembled. However, when assembling manually, there is a problem that, for example, the installation position of each component is shifted or the screwing is incomplete. In addition, for example, there is a problem that there is a high possibility that the printed circuit board or the like is accidentally broken during the assembly operation. Moreover, in the process of assembling the liquid crystal display device, for example, there is a process in which work efficiency is poor by manual work.

  Therefore, in recent years, for example, the liquid crystal display device has been automatically assembled using an assembly device.

  However, when assembling the liquid crystal display device automatically, for example, the present inventors have found that there is a problem that attachment failure (assembly failure) is likely to occur in the step of attaching the TCON substrate to the lower frame. It was. One of the problems in the conventional assembly method will be described with reference to FIG.

  FIG. 25 is a schematic cross-sectional view showing a schematic configuration of a position where a TCON substrate of a lower frame of a conventional liquid crystal display device is attached. FIG. 26 is a schematic diagram for explaining one of the problems in the configuration shown in FIG.

  In the conventional liquid crystal display device, a positioning cut-and-raised portion 2F is provided on the bottom surface of the lower frame 2 at a position where the TCON substrate 9 is attached, for example, as shown in FIG. The cut-and-raised portion 2F is provided by, for example, opening a region for attaching the TCON substrate 9 in the bottom surface portion of the lower frame 2 with a punching die and then bending it in a direction in which the TCON substrate 9 is attached.

  However, the cut-and-raised portion 2F may be insufficiently bent (plastically deformed), or may be subjected to external force after being bent, and when the TCON substrate 9 is attached to the lower frame 2, for example, FIG. As shown in FIG. 6, the interval between the tips of the cut-and-raised portion 2F may be narrower than the width of the TCON substrate 9. In this case, since the TCON substrate 9 cannot be attached to the lower frame 2 as it is, it is necessary to bend the raised part 2F manually, for example, as shown in FIG. There is. In the case of manual assembly, for example, the TCON substrate 9 is attached to the lower frame 2 without noticing the fall of the cut-and-raised portion 2F, and the TCON substrate 9 is likely to be damaged.

  Also, when the liquid crystal display device is automatically assembled using an assembly device, when the TCON substrate 9 is attached to the lower frame 2, for example, as shown in FIG. If it is narrower than the width of the substrate 9, the TCON substrate 9 cannot be attached to the lower frame 2.

  In the case of automatic assembly, even when the cut-and-raised portion 2F of the lower frame 2 has a normal shape as shown in FIG. 25, when the TCON substrate 9 is attached to the lower frame 2, for example, There is a high possibility that the relative positional relationship of the cut-and-raised portion 2F will shift, and the TCON substrate 9 will come into contact with the cut-and-raised portion 2F and the TCON substrate 9 will be damaged. Therefore, there is a problem that it takes time to align the TCON substrate 9.

  Furthermore, when assembling the liquid crystal display device, for example, it is necessary to align the screw holes for screwing the support member and the upper frame, and a positioning projection is provided on the support member. An alignment hole is provided in the frame. However, in the case of a conventional configuration (shape) for alignment, for example, when the liquid crystal display device is automatically assembled using an assembly device, a positional deviation occurs, and the positioning projections are formed on the support member. The inventors of the present application have also found that the problem that the screw hole cannot be aligned because it is not inserted into the alignment hole in the upper frame is likely to occur.

  The liquid crystal display device having the above-described configuration is usually provided in a state of being housed in a housing. Therefore, when the liquid crystal display device is housed in the housing, it is necessary to align the liquid crystal display device and the housing, but it is difficult to align the conventional manual assembly or automatic assembly. There was a problem.

  An object of the present invention is to provide a technique capable of improving workability in a process of attaching a printed circuit board to a lower frame when assembling a liquid crystal display device, for example.

  Another object of the present invention is to provide a technique capable of facilitating alignment of a support member and an upper frame when, for example, a liquid crystal display device is assembled.

  Another object of the present invention is to provide a technique capable of reducing component mounting defects due to misalignment when, for example, a liquid crystal display device is automatically assembled.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  The outline of typical inventions among the inventions disclosed in the present application will be described as follows.

  (1) A display device comprising: a display panel; a lower frame disposed behind the display panel as viewed from an observer; and a printed circuit board attached to a flat surface of the lower frame. The frame has positioning projections that are located outside the region to which the printed circuit board is attached and are bent toward the printed circuit board at a plurality of locations facing each other across the region to which the printed circuit board is attached. The positioning projection protrudes from the printed circuit board attached to the lower frame, and a portion protruding from the printed circuit board is bent in a direction away from the printed circuit board. Display device.

  (2) The display device according to (1), wherein the lower frame has a printed circuit board fixing protrusion bent toward the printed circuit board side inside a region where the printed circuit board is attached.

  (3) In the display device according to (1) or (2), the printed circuit board has a groove for alignment that is retreated in the direction of the opposite side in the vicinity of the center of each of the two parallel sides. The display projection of the lower frame is supported and fixed with the printed circuit board sandwiched by the positioning groove of the printed circuit board.

  (4) In the display device according to (1) or (2), the printed circuit board has a substantially quadrangular shape when viewed in plan, and the positioning protrusions of the lower frame are formed on the printed circuit board. A display device provided at a position facing each of the four sides.

  (5) The display device according to any one of (1) to (4), wherein the printed circuit board is attached to the rear of the lower frame when viewed from an observer.

  (6) The display device according to any one of (1) to (5), wherein the display panel is a liquid crystal display panel in which a liquid crystal material is sealed between a pair of substrates.

  (7) a display panel, a support member disposed on an outer periphery of the display panel as viewed from an observer, and an upper frame disposed on a front side of the display panel as viewed from the observer, A display device that supports an outer peripheral portion of the display panel by a support member and the upper frame, wherein the support member has a positioning projection protruding toward the upper frame on a surface facing the upper frame. The upper frame has an alignment opening that is paired with the positioning protrusion of the support member, and is near the opening end of the periphery of the alignment opening of the upper frame Is a display device in which the support member is bent in a direction opposite to the direction in which the support member is located, and an outer region thereof is bent toward the support member.

  (8) In the display device according to (7), the opening end of the alignment opening portion of the upper frame is formed in a curved shape on the surface side facing the support member of the bent portion. .

  (9) The display device according to (7) or (8), wherein the positioning opening of the upper frame is located at a base portion of the positioning projection of the support member.

  (10) In the display device according to any one of (7) to (9), a protrusion amount toward the support member is around the opening for alignment of the upper frame, and a bent portion of the opening end Display device larger than the amount of protrusion.

  (11) The display device according to any one of (7) to (10), wherein the display panel is a liquid crystal display panel in which a liquid crystal material is sealed between a pair of substrates.

  (12) A display device having a display module in which a lower frame is disposed behind a display panel, and a housing that houses the display module, the housing being behind the lower frame as viewed from an observer And a plurality of positioning projections projecting toward the lower frame on a surface facing the lower frame, and the lower frame is paired with the positioning projections of the housing An opening for alignment, and the vicinity of the opening end in the periphery of the opening for alignment of the lower frame is bent in a direction opposite to the surface facing the housing, And the display apparatus by which the surface side facing the said housing | casing of the said bent part is shape | molded in the curved surface shape.

  (13) In the display device according to (12), the alignment protrusion of the housing has an area of a root portion viewed from a plane that is larger than a region where the alignment opening of the lower frame is opened. Wide display device.

  (14) A display device having a display module in which a lower frame is arranged behind a display panel and a housing that houses the display module, the housing being behind the lower frame as viewed from an observer And has a positioning opening on a surface facing the lower frame, and the lower frame has a positioning projection that is paired with the positioning opening of the housing. And the vicinity of the opening end of the periphery of the opening for alignment of the housing is bent in a direction opposite to the direction in which the lower frame is located, and the area outside thereof is A display device bent to the lower frame side.

  (15) In the display device according to (14), the opening end of the opening for alignment of the housing is formed such that a surface of the bent portion facing the lower frame is formed into a curved surface. .

  (16) The display device according to (14) or (15), wherein the opening for positioning of the housing is located at a base portion of the positioning projection of the lower frame.

  (17) In the display device according to any one of (14) to (16), the amount of protrusion toward the lower frame is around the opening for alignment of the housing, and the bent portion of the opening end Display device larger than the amount of protrusion.

  (18) The display device according to any one of (12) to (17), wherein the display panel is a liquid crystal display panel in which a liquid crystal material is sealed between a pair of substrates.

  The first feature of the display device of the present invention is, for example, that the printed circuit board is attached to the area of the lower frame arranged behind the display panel, outside the area to which the printed circuit board is attached, and the printed circuit board A positioning protrusion is provided by bending a plurality of portions facing each other across an area for attaching a circuit board to the printed circuit board side. Further, at this time, the positioning projections protrude from the printed circuit board attached to the lower frame, and a portion protruding from the printed circuit board is bent in a direction away from the printed circuit board. By doing in this way, even if position shift arises when attaching the said printed circuit board to the said lower frame, the said printed circuit board can be attached smoothly. Further, even if the bending angle of the positioning projection of the lower frame is, for example, 90 degrees or more, the printed circuit board can be attached so as not to be damaged.

  Further, at this time, the lower frame may be provided with a printed circuit board fixing protrusion bent to the printed circuit board side, for example, inside a region where the printed circuit board is attached.

  In the display device, for example, a positioning groove that is recessed in the direction of the opposite side is provided near the center of each of the two parallel sides of the printed circuit board. These protrusions can be supported and fixed so that the printed circuit board is sandwiched by the positioning groove of the printed circuit board, thereby preventing displacement in the vertical direction and the horizontal direction as viewed in a plane.

  In the display device, for example, the planar shape of the printed circuit board is a substantially quadrangular shape, and the positioning projections of the lower frame are respectively positioned at positions facing the four sides of the printed circuit board. May be provided.

  In the display device, the printed circuit board includes, for example, a circuit board having a circuit such as a timing controller (TCON board) and a circuit board for inputting a control signal from the TCON board to the display panel. . Among these, the printed circuit board to which the present invention is particularly desired is the TCON board. At this time, the TCON substrate is attached to the rear of the lower frame as viewed from an observer.

  The first feature of the present invention includes a display panel, a lower frame disposed behind the display panel as viewed from an observer, and a printed circuit board attached to a flat surface of the lower frame. The present invention can be applied to any display device as long as it is a display device, but it is particularly desirable to apply to a display device having a liquid crystal display panel.

  The second feature of the display device of the present invention is based on the premise that the outer peripheral portion of the display panel is supported so as to be sandwiched between the support member and the upper frame, and on the surface of the support member facing the upper frame, When the positioning projection that protrudes toward the upper frame is provided and the positioning opening that is paired with the positioning projection of the support member of the upper frame is provided, the positioning projection of the upper frame is provided. Of the periphery of the opening, the vicinity of the opening end is bent in the direction opposite to the direction in which the support member is located, and the outer region is bent toward the support member. By doing in this way, even if position shift arises when attaching the upper frame to the support member, the upper frame can be attached smoothly.

  Further, at this time, when the vicinity of the opening end of the positioning opening of the upper frame is bent so that the surface side facing the support member is curved, the positioning projection of the support member is moved to the upper frame. Can be smoothly inserted into the positioning opening.

  Also, at this time, the alignment opening of the upper frame is located at the base of the positioning projection of the support member, thereby improving the alignment accuracy of the support member and the upper frame. Can easily be raised.

  Further, at this time, the periphery of the positioning opening of the upper frame is such that the amount of protrusion toward the support member is larger than the amount of protrusion of the bent portion of the opening end. It is desirable to prevent the bent portion from protruding from the upper frame.

  The second feature of the present invention is applicable to any display device as long as the display device has a support member and an upper frame that support the display panel so as to sandwich the outer periphery of the display panel. It is desirable to apply to a display device having a liquid crystal display panel.

  The third feature of the display device of the present invention is based on the premise that a display module in which a lower frame is disposed behind a display panel is housed in a housing, and the housing includes the lower frame side. A plurality of positioning projections projecting from each other, and a positioning opening that is paired with the positioning projection of the housing is provided in the lower frame. Also, at this time, the vicinity of the opening end in the periphery of the positioning opening of the lower frame is bent in a direction opposite to the surface facing the casing, and the bent portion of the casing is The opposite side is molded into a curved surface. In this way, for example, when the display module is placed on the rear housing among the housing divided into the rear and front sides of the display module as viewed from the observer, the housing The body positioning projection can be smoothly inserted into the positioning opening of the lower frame, and the positioning of the display module is facilitated.

  Further, at this time, the alignment protrusion of the casing has the base portion viewed in a plane having a larger area than the opening area of the alignment opening of the lower frame. A predetermined gap can be provided between the module and the housing.

  The fourth feature of the display device of the present invention is that, contrary to the third feature, the housing is provided with an opening for alignment, and the lower frame is provided with the position of the housing. It is to provide positioning protrusions that are paired with the matching openings. Also, at this time, in the periphery of the opening for alignment of the casing, the vicinity of the opening end is bent in a direction opposite to the direction in which the lower frame is located, and the outer region is on the lower frame side. Bend it. Even in this case, the positioning projection of the housing can be smoothly inserted into the positioning opening of the lower frame, and the positioning of the display module is facilitated.

  Further, at this time, when the vicinity of the opening end of the positioning opening of the casing is bent so that the surface side facing the lower frame is curved, the positioning projection of the lower frame is moved to the casing. Can be smoothly inserted into the positioning opening.

  Further, at this time, the positioning opening of the casing is located at the base of the positioning projection of the lower frame, so that the alignment accuracy between the display module and the casing is improved. Can easily be raised.

  Further, at this time, the periphery of the opening for alignment of the housing is such that the protruding amount toward the lower frame is larger than the protruding amount of the bent portion of the opening end. It is desirable to prevent the bent portion from protruding from the housing.

  Further, the third and fourth features of the present invention can be applied to any display device as long as the display device has a display module having a lower frame behind the display panel in a housing. However, it is particularly desirable to apply to a display device having a liquid crystal display panel.

  Further, the display device of the present invention is not limited to the display device having any one of the first to fourth features, and the display device having two or three of the four features. Of course, it may be.

  As described above, the display device according to the present invention has some of the four features, thereby facilitating the alignment when assembling the display device and increasing the alignment accuracy. it can. For this reason, not only manual assembly but also automatic assembly using an assembly apparatus can reduce mounting defects due to misalignment and improve the productivity of the display device.

1 is a schematic plan view showing a schematic configuration of a liquid crystal display device to which the present invention is applied. FIG. 2 is a schematic exploded perspective view of the liquid crystal display device shown in FIG. 1. FIG. 2 is a schematic back view of the liquid crystal display device shown in FIG. 1. It is a schematic plan view of area | region AR1 shown in FIG. It is a schematic cross section in the A-A 'line of FIG. It is a schematic cross section in the B-B 'line of FIG. It is a schematic plan view of the process of forming the 1st projection part and the 2nd projection part in a lower frame. FIG. 8 is a schematic cross-sectional view of a step of forming a first protrusion and a second protrusion as seen in a cross section taken along line C-C ′ of FIG. It is a schematic diagram for demonstrating the relationship between the attachment method of a TCON board | substrate, and the dimension of a 1st protrusion. 6 is a schematic diagram for explaining another function and effect in the liquid crystal display device of Example 1. FIG. 6 is a schematic cross-sectional view for explaining a first modification of the liquid crystal display device of Example 1. FIG. 6 is a schematic plan view for explaining a second modification of the liquid crystal display device of Embodiment 1. FIG. FIG. 10 is a schematic exploded perspective view for explaining a third modification of the liquid crystal display device according to the first embodiment. It is the model top view which looked at the liquid crystal display device from the display surface side. It is a schematic cross section in the D-D 'line | wire of FIG. FIG. 6 is a schematic cross-sectional view for explaining the characteristics of the liquid crystal display device of Example 2. It is a schematic cross section which shows the structural example of the alignment part of the supporting member and upper frame in the conventional liquid crystal display device. It is a schematic cross section for demonstrating one of the problems in the structure shown in FIG. FIG. 10 is a schematic diagram for explaining an example of an operational effect in the liquid crystal display device of Example 2. FIG. 10 is a schematic diagram for explaining an example of an operational effect in the liquid crystal display device of Example 2. It is a model perspective view which shows schematic structure of a liquid crystal display module and the housing | casing arrange | positioned at the back. FIG. 22 is a schematic cross-sectional view taken along line E-E ′ of FIG. 21. It is a schematic diagram for demonstrating the specific example of a structure of the alignment part of a liquid crystal display module and a housing | casing. 10 is a schematic cross-sectional view for explaining a modification of the liquid crystal display device of Example 3. FIG. It is a schematic cross section which shows schematic structure of the position which attaches the TCON board | substrate of the lower frame of the conventional liquid crystal display device. FIG. 26 is a schematic diagram for explaining one of the problems in the configuration illustrated in FIG. 25.

Hereinafter, the present invention will be described in detail together with embodiments (examples) with reference to the drawings.
In all the drawings for explaining the embodiments, parts having the same function are given the same reference numerals and their repeated explanation is omitted.

FIG. 1 to FIG. 3 are schematic diagrams for explaining a configuration example of a display device to which the present invention is applied.
FIG. 1 is a schematic plan view showing a schematic configuration of a liquid crystal display device to which the present invention is applied. FIG. 2 is a schematic exploded perspective view of the liquid crystal display device shown in FIG. FIG. 3 is a schematic back view of the liquid crystal display device shown in FIG.

  The display device to which the present invention is applied is a display device such as a liquid crystal display device, for example, and as shown in FIGS. 1 and 2, a lower frame 2 and an upper frame 3 are arranged so as to sandwich the liquid crystal display panel 1. ing. At this time, the lower frame 2 has a substantially box shape, and for example, a light source such as a fluorescent tube 4 and a reflecting member are accommodated therein. Further, an optical sheet such as a light diffusion plate 5 is disposed between the liquid crystal display panel 1 and the fluorescent tube 4.

  Further, an annular support member 6 made of, for example, a molded resin is disposed between the liquid crystal display panel 1 and the lower frame 2, and the light diffusion plate 5 sandwiches the outer peripheral portion between the lower frame 2 and the support member 6. It is supported in such a way. At this time, the liquid crystal display panel 1 is supported by the upper frame 3 and the support member 6 so as to sandwich the outer peripheral portion.

  The liquid crystal display panel 1 is a display panel in which a liquid crystal material is sealed between a pair of substrates, a first substrate (hereinafter referred to as a TFT substrate) 101 and a second substrate (hereinafter referred to as a counter substrate) 102. is there. At this time, although not shown, the TFT substrate 101 includes a plurality of scanning signal lines, a plurality of video signal lines that sterically intersect with the plurality of scanning signal lines via an insulating layer, and two adjacent video signal lines. TFT elements, pixel electrodes, and the like are formed in a pixel region surrounded by the scanning signal line and two adjacent video signal lines. Further, for example, a color filter is formed on the counter substrate 102. In the display device of the present invention, the liquid crystal display panel 1 may be any of various liquid crystal display panels used in conventional liquid crystal display devices. A description of the configuration is omitted.

  Further, for example, as shown in FIG. 2, a flexible printed circuit for inputting a video signal (sometimes referred to as gradation data) to a video signal line of the TFT substrate 101 is provided on the TFT substrate 101 of the liquid crystal display panel 1. A board 7A and a flexible printed circuit board 7B for inputting a scanning signal to the scanning signal line are connected. At this time, for example, driver ICs are mounted on the flexible printed circuit boards 7A and 7B. At this time, the flexible printed circuit board 7A for inputting the video signal to the video signal line is connected to the rigid printed circuit board 8, for example, as shown in FIG. At this time, the rigid printed circuit board 8 connected to the flexible printed circuit board 7A is attached to the outer peripheral side surface of the support member 6 by bending the flexible printed circuit board 7A, for example.

  The rigid printed circuit board 8 connected to the flexible printed circuit board 7A is connected to another printed circuit board (TCON board) 9 having a control circuit such as a timing controller by a flexible printed cable 10. At this time, for example, as shown in FIGS. 2 and 3, the TCON substrate 9 is attached to the rear (bottom surface) of the lower frame 2 when viewed from the observer.

  Hereinafter, the present invention will be described in detail by taking the liquid crystal display device having the configuration shown in FIGS. 1 to 3 as an example.

4 to 6 are schematic views showing a schematic configuration of the liquid crystal display device of Example 1 according to the present invention.
FIG. 4 is a schematic plan view of the area AR1 shown in FIG. FIG. 5 is a schematic cross-sectional view taken along line AA ′ of FIG. 6 is a schematic cross-sectional view taken along the line BB ′ of FIG.

  The first embodiment relates to a configuration of a portion to which the TCON substrate 9 is attached in the liquid crystal display device having the configuration as shown in FIGS. 1 to 3. The TCON substrate 9 includes, for example, a control circuit such as a timing controller that controls the timing of inputting a video signal to the video signal line formed on the TFT substrate 101 of the liquid crystal display panel 1 and the timing of inputting the scanning signal to the scanning signal line. The printed circuit board is usually attached to the rear side of the lower frame 2 as viewed from the observer, that is, the back side of the lower frame 2.

  At this time, for example, as shown in FIGS. 4 to 6, the lower frame 2 is provided with a first protrusion 2 </ b> A for determining the attachment position of the TCON substrate 9 in the region where the TCON substrate 9 is attached. Further, at this time, the TCON substrate 9 has, for example, a groove 9 </ b> A that is recessed toward the opposite side at the center of each of the two parallel sides. The position of the positioning projection 2A of the lower frame 2 is fixed so that the TCON substrate 9 is sandwiched between the two grooves 9A of the TCON substrate 9.

  At this time, as shown in FIGS. 5 and 6, for example, the lower frame 2 is provided with a second protrusion 2B for fixing the TCON substrate 9 at a predetermined height in a region to which the TCON substrate 9 is attached. It has been.

  Furthermore, the height of the first protrusion 2A from the lower frame 2 is higher than the protruding height of the TCON substrate 9 attached to the lower frame 2 (second protrusion 2B) and higher than the TCON substrate 9. The part at the position is bent in a direction away from the TCON substrate 9. By doing so, for example, even when the position when the TCON substrate 9 is attached is shifted in the left-right direction where the first protrusion 2A is provided, the groove portion 9A of the TCON substrate 9 is the first protrusion. Since it touches the inclined part of 2A and slides in the left-right direction, the TCON substrate 9 can be correctly attached at a predetermined attachment position.

  Further, the first protrusion 2A and the second protrusion 2B of the lower frame 2 are provided by, for example, bending a protrusion portion formed by punching the lower frame 2 with a mold, and the TCON substrate 9 of the lower frame 2 is attached. There is an opening 2C around the area.

7 and 8 are schematic diagrams for explaining an example of a method of forming the first protrusion and the second protrusion of the lower frame.
FIG. 7 is a schematic plan view of a process of forming the first protrusion and the second protrusion on the lower frame. FIG. 8 is a schematic cross-sectional view of a process of forming the first protrusion and the second protrusion as seen in the cross section taken along the line CC ′ of FIG.

  In the liquid crystal display device according to the first embodiment, the first protrusion 2A and the second protrusion 2B of the lower frame 2 are provided by, for example, bending a protrusion portion formed by punching the lower frame 2 with a mold. That is, first, as shown in the upper part of FIG. 7 and FIG. 8, for example, the first projection 2A used as the first protrusion 2A on the area where the TCON substrate 9 is attached and around the flat surface which becomes the bottom surface of the lower frame 2 The opening 2C having the second protrusion 2B ′ used as the second protrusion 2A ′ and the second protrusion 2B is formed. The opening 2C is formed, for example, by punching using a mold. At this time, the first protrusion 2A 'is formed outside the region to which the TCON substrate 9 is attached and extends in a direction away from the region to which the TCON substrate 9 is attached.

  Next, the first protrusion 2A ′ and the second protrusion 2B ′ provided by opening the lower frame 2 are bent in the direction of the surface to which the TCON substrate 9 is attached, as shown in the lower part of FIG. First protrusion 2A and second protrusion 2B are formed. At this time, the first protrusion 2A and the second protrusion 2B are formed, for example, by bending using a mold. In this way, as shown in the lower part of FIG. 8, the first protrusion bends (plastically deforms) the first protrusion 2A ′ in the direction of the region where the TCON substrate is attached. The reaction (spring back) is applied in a direction away from the region where the TCON substrate 9 is attached.

  When forming the first protrusion 2A and the second protrusion 2B by opening the lower frame 2, the opening of the lower frame 2 and the protrusions 2A ′ and 2B are not a two-step process as described above. Bending can also be performed in a single step.

  FIG. 9 is a schematic diagram for explaining the relationship between the mounting method of the TCON substrate and the dimensions of the first protrusions. FIG. 9 is a view of the area AR1 shown in FIG. 4 as viewed from the left side.

  In the display device according to the first embodiment, the first protrusion 2A provided on the lower frame 2 has a protruding amount from the lower frame 2 larger than the protruding height of the TCON substrate 9, for example, as shown in FIG. To. At this time, the TCON substrate 9 can be easily attached to the correct position by bending the portion of the first protrusion 2 </ b> A located higher than the TCON substrate 9 in a direction away from the TCON substrate 9.

  By the way, when the TCON board 9 is attached to the lower frame 2, for example, as shown in FIG. It is. Therefore, when the TCON substrate 9 is placed on the attachment position of the lower frame 2, for example, as shown in FIG. 9, the end to which the flexible printed cable 10 is connected may be in a floating state. . As described above, in order to prevent the position of the TCON substrate 9 from being displaced even when the end portion to which the flexible printed cable 10 is connected is floated, for example, in a state where the TCON substrate 9 is correctly attached, It is desirable that the height T1 of the portion at a position higher than the TCON substrate 9 of one protrusion 2A satisfies the following conditions.

First, as shown in FIG. 9, the distance from the first protrusion 2A to the end of the TCON substrate 9 in a state where the TCON substrate 9 is correctly attached is T2, and the width of the TCON substrate 9 is T3. Further, the maximum value when the end of the TCON substrate 9 to which the flexible printed cable 10 is connected floats is set to H. At this time, the height T1 of the portion at a position higher than the TCON substrate 9 of the first protrusion 2A is set to a value satisfying the following (Equation 1), for example.
T1> (T2 / T3) · H (Expression 1)

  Further, as shown in FIG. 9, in order to allow the TCON board 9 to be attached at a correct position even when the end of the TCON board 9 to which the flexible printed cable 10 is connected is floated. For example, it is desirable to make the width T4 of the first protrusion 2A smaller than the width T5 of the groove 9A of the TCON substrate 9.

  However, if the difference between the width T5 of the groove 9A of the TCON substrate 9 and the width T4 of the first protrusion 2A is too large, the alignment accuracy in the horizontal direction in FIG. Therefore, it is desirable to determine the width T5 of the groove 9A of the TCON substrate 9 and the width T4 of the first protrusion 2A in consideration of alignment accuracy.

  As described above, according to the liquid crystal display device of the first embodiment, even if the position of the TCON substrate 9 and the position where it is actually attached are misaligned before the TCON substrate 9 is attached, the TCON substrate 9 is placed in the correct position. Can be attached. For this reason, not only manual assembly but also automatic assembly using an assembly apparatus can reduce mounting defects due to misalignment, and can improve the productivity of the display device.

  FIG. 10 is a schematic diagram for explaining another function and effect of the liquid crystal display device according to the first embodiment.

  In the liquid crystal display device according to the first embodiment, the first protrusion 2A of the lower frame is provided by bending a portion outside the region to which the TCON substrate 9 is attached to the region side to which the TCON substrate 9 is attached. Therefore, the bending angle of the first protrusion 2A becomes larger than 90 degrees, for example, as shown in the upper part of FIG. The interval between the protrusions 2A may be narrower than the distance between the groove portions 9A of the TCON substrate 9.

  However, in the case of Example 1, a reaction (springback) of bending deformation (plastic deformation) occurs in the first protrusion 2A in the direction from the region where the TCON substrate 9 is attached to the outside. Therefore, if the TCON substrate 9 is pushed in, the first protrusion 2A easily spreads outward, and the TCON substrate 9 can be easily attached to the correct position and height as shown in the lower part of FIG.

  FIG. 11 is a schematic cross-sectional view for explaining a first modification of the liquid crystal display device according to the first embodiment. FIG. 11 is a view corresponding to a cross section taken along line A-A ′ of FIG. 4.

  In describing the characteristics of the liquid crystal display device according to the first embodiment, in FIGS. 5 and 6, the second protrusion 2 </ b> B for controlling the mounting height is provided inside the region of the lower frame 2 where the TCON substrate 9 is mounted. The case where is provided is given as an example. However, the liquid crystal display device according to the first embodiment is not limited to such a configuration. For example, as illustrated in FIG. 11, the second protrusion may be omitted. In the case of the configuration shown in FIG. 11, it is a matter of course that a chip-like circuit component such as a capacitor element is not mounted on the surface of the TCON substrate 9 facing the lower frame 2. . In the case of the configuration shown in FIG. 11, illustration is omitted, but it is desirable to interpose an insulating film (sheet) between the TCON substrate 9 and the lower frame 2, for example.

  FIG. 12 is a schematic plan view for explaining a second modification of the liquid crystal display device according to the first embodiment. FIG. 12 is a plan view corresponding to the area AR1 shown in FIG.

  In describing the characteristics of the liquid crystal display device according to the first embodiment, FIG. 4 illustrates an example in which two first protrusions 2A are provided so as to sandwich a pair of two parallel sides of the TCON substrate 9. It was. However, the liquid crystal display device according to the first embodiment is not limited to such a configuration. For example, as illustrated in FIG. 12, the four first display devices face each of the four sides of the substantially quadrangular TCON substrate 9. Of course, the protrusion 2A may be provided. In this case, the two first projections 2A arranged on the left and right sides of the TCON substrate 9 can be aligned in the left-right direction, and the two first projections 2A arranged up and down can be aligned in the vertical direction. For this reason, it is not necessary to provide the TCON substrate 9 with, for example, the groove 9A as shown in FIG. 4, and it is possible to provide a margin for wiring on the TCON substrate 9 by that amount.

  In Example 1, for example, as shown in FIGS. 7 and 8, the first protrusion 2A ′ formed by punching the lower frame 2 is bent to form the first protrusion 2A. Of course, the first protrusion 2A may be formed outside the region of the lower frame 2 where the TCON substrate 9 is attached, for example, by drawing using a mold.

  FIG. 13 is a schematic exploded perspective view for explaining a third modification of the liquid crystal display device according to the first embodiment.

  For example, as shown in FIGS. 2 and 3, the flexible structure connected to the video signal line of the liquid crystal display panel 1 (TFT substrate 101) is used as the premise for explaining the characteristics of the liquid crystal display device of the first embodiment. Only the printed circuit board 7 </ b> A is connected to the rigid printed circuit board 8. In the liquid crystal display device having such a configuration, a control signal transmitted from the TCON substrate 9 to the flexible printed circuit board 7B connected to the scanning signal line of the liquid crystal display panel 1 is transmitted to the rigid printed circuit board 8 and the video signal line. Are input to the flexible printed circuit board 7B connected to the scanning signal line through the flexible printed circuit board 7A connected to the wiring board and the wiring formed on the TFT substrate 101.

  However, the liquid crystal display device according to the first embodiment is not limited to such a configuration. For example, as shown in FIG. 13, a flexible printed circuit board 7B connected to a scanning signal line is connected to another rigid printed circuit board 8B. Of course, the rigid printed circuit board 8B and the TCON board 9 may be connected by another flexible printed cable 10B.

14 to 16 are schematic views showing a schematic configuration of the liquid crystal display device according to the second embodiment of the present invention.
FIG. 14 is a schematic plan view of the liquid crystal display device as viewed from the display surface side. FIG. 15 is a schematic cross-sectional view taken along the line DD ′ of FIG. FIG. 16 is a schematic cross-sectional view for explaining the characteristics of the liquid crystal display device of the second embodiment. 16 is the same as FIG. 15 and shows a cross section taken along the line DD ′ of FIG.

  In the first embodiment, the configuration for facilitating the alignment when attaching the TCON substrate 9 to the lower frame 2 and reducing the attachment failure due to the misalignment has been described. However, when assembling the liquid crystal display device, There are also places (processes) that need to be aligned. Therefore, in the second embodiment, a configuration for facilitating the alignment of the support member 6 and the upper frame 3 and reducing a mounting failure due to a positional shift will be described as an example of a place where other alignment is necessary.

  In the liquid crystal display device, the support member 6 and the upper frame 3 that support the outer peripheral portion of the liquid crystal display panel 1 are respectively provided on the liquid crystal display panel 1 having a substantially quadrangular shape, as shown in FIGS. It is constituted by a substantially bar-shaped member divided into four along the side. For example, each member is overlapped at a corner portion and fixed with screws or the like to form an integral frame-shaped member. At this time, in the vicinity of the upper left corner of the liquid crystal display device shown in FIG. 14, the positions of screw holes for screwing the two support members 601 and 603 and the two upper frames 301 and 303 with the screws 11 are provided. In order to align, for example, as shown in FIG. 15, a positioning projection 601 </ b> A is provided on the support member 601, and an alignment opening 301 </ b> A is provided on the upper frame 301.

  Further, in the liquid crystal display device according to the second embodiment, as shown in FIGS. 15 and 16, in the vicinity of the opening 301 </ b> A for alignment provided in the upper frame 301, the vicinity of the opening end is in the direction where the support member 601 is located. Is bent in the opposite direction, and the outer region is bent in the direction in which the support member 601 is located. In order to make the periphery of the opening 301A for alignment of the upper frame 301 into such a shape, for example, punching and drawing using a mold may be performed.

  At this time, the opening 301A of the upper frame 301 has a diameter after bending the opening end larger than the diameter of the positioning projection 601A of the support member 601, for example, the clearance Δx is about 0.1 mm. To be processed. Furthermore, it is desirable that the opening 301A of the upper frame 301 is processed so that the surface side facing the support member 601, that is, the entrance side of the positioning projection 601A of the support member 601 is curved.

  In addition, the periphery of the opening 301A for alignment of the upper frame 301 has a bent portion at the opening end such that the protruding amount toward the support member 601 is larger than the protruding amount of the bent portion at the opening end. It is desirable to prevent protrusion from the upper frame 301.

FIGS. 17 to 20 are schematic cross-sectional views for explaining the operational effects of the liquid crystal display device according to the second embodiment.
FIG. 17 is a schematic cross-sectional view showing a configuration example of the alignment portion of the support member and the upper frame in the conventional liquid crystal display device. FIG. 18 is a schematic cross-sectional view for explaining one of the problems in the configuration shown in FIG. FIG. 19 is a schematic diagram for explaining an example of the function and effect of the liquid crystal display device according to the second embodiment. FIG. 20 is a schematic diagram for explaining an example of the operational effects of the liquid crystal display device according to the second embodiment. 17 to 20 are cross-sectional views corresponding to the cross section taken along line DD ′ of FIG.

  Also in the conventional liquid crystal display device, a portion for positioning the support member 601 and the upper frame 301 is provided with a positioning projection 601A on the support member 601 as shown in FIG. A matching opening 301A is provided. However, in the case of the conventional liquid crystal display device, the positioning opening 301A of the upper frame 301 is formed by, for example, projecting the periphery of the area opened by punching using a mold toward the support member 601. There are often.

  That is, in the case of the conventional liquid crystal display device, the opening end of the positioning opening 301A of the upper frame 301 has an angular shape. For example, as shown in FIG. 18, the positioning projection 601A of the support member 601 When there is a deviation between the position and the position of the opening 301A for alignment of the upper frame 301, the protrusion 601A of the support member may not be inserted into the opening 301A of the upper frame. Therefore, the configuration of the conventional liquid crystal display device has a problem that the workability of attaching (positioning) the upper frame 301 is poor.

  On the other hand, in the liquid crystal display device according to the second embodiment, since the opening 301A for alignment of the upper frame 301 is processed into a curved surface, for example, as shown in the upper part of FIG. Even if the position of the protrusion 601A and the position of the opening 301A for alignment of the upper frame 301 are displaced, the protrusion 601A of the support member slides along the curved surface of the opening 301A of the upper frame. Therefore, as shown in the lower part of FIG. 19, the protrusion 601A of the support member is smoothly inserted into the opening 301A of the upper frame, and the upper frame 301 can be easily attached to the correct position.

  Further, in the case of the conventional liquid crystal display device, when the upper frame 301 is mounted on the support member 601, the positioning opening 301A of the upper frame 301 extends from the root of the positioning projection 601A of the support member 601. Often located at a distant location. The support member 601 is generally formed by molding a molten resin. For example, the protrusion 601A of the support member may be bent. For this reason, in the case of a conventional liquid crystal display device, the position of the upper frame 301 may be shifted even though the protrusion 601A of the support member is inserted into the opening 301A of the upper frame.

  On the other hand, in the liquid crystal display device of Example 2, as shown in the upper and lower stages of FIG. 20, the periphery of the opening 301 </ b> A of the upper frame is greatly protruded toward the support member 601. At this time, for example, even if the protrusion 601A of the support member is bent, if the protrusion 601A of the support member is inserted into the opening 301A of the upper frame, as shown in the lower part of FIG. Alignment is performed by the base portion of the protrusion 601A and the opening 301A of the upper frame. Therefore, the upper frame 301 is less likely to be displaced as compared with the conventional liquid crystal display device.

  Further, although repeated description is omitted, alignment of other portions, for example, alignment of the support member 602 and the upper frame 302 is also illustrated in the shape of the opening for alignment of each upper frame and its peripheral shape. With the shape as shown in FIG. 15 and FIG. 16, the alignment becomes easy and the upper frame is less likely to be displaced.

  As described above, according to the liquid crystal display device of the second embodiment, when the upper frame 3 is mounted on the support member 6, it is possible to easily prevent the mounting position of the upper frame 3 from being shifted. For this reason, not only manual assembly but also automatic assembly using an assembly apparatus can reduce mounting defects due to misalignment, and can improve the productivity of the display device.

  Further, in the second embodiment, the case where the support member 6 and the upper frame 3 are divided into four along the four sides of the liquid crystal display panel 1 is described as an example. Of course, it may be a support member and an upper frame. Also in that case, the positioning part of the support member 6 and the upper frame 3 is configured as shown in FIG. 15, for example, the position of the screw hole for fixing the support member and the upper frame with screws, the upper frame It is possible to easily prevent the position of the screw holes for fixing the frame to be fixed with screws.

  In the second embodiment, only the configuration of the support member and the upper frame alignment portion is described, and only the configuration thereof is described. However, this is combined with the configuration of the TCON substrate and the lower frame mounting portion described in the first embodiment. Of course, you may.

  The liquid crystal display device described in the first and second embodiments, that is, the liquid crystal display device having the configuration shown in FIGS. 1 to 3 is generally called a liquid crystal display module. In the case of a so-called display device such as a display, a liquid crystal display module having a configuration as shown in FIGS. 1 to 3 is housed in a housing (exterior) together with input terminals and the like. When the liquid crystal display module is accommodated in the housing, for example, alignment of the liquid crystal display module and the housing is required. Therefore, in the third embodiment, a configuration for facilitating alignment between the liquid crystal display module and the housing and increasing accuracy will be described.

21 to 23 are schematic views showing a schematic configuration of a liquid crystal display device according to Embodiment 3 of the present invention.
FIG. 21 is a schematic perspective view illustrating a schematic configuration of a liquid crystal display module and a housing disposed behind the liquid crystal display module. 22 is a schematic cross-sectional view taken along line EE ′ of FIG. FIG. 23 is a schematic diagram for explaining a specific example of the configuration of the alignment unit between the liquid crystal display module and the housing.

  Example 3 relates to alignment when a liquid crystal display device (liquid crystal display module) configured as shown in FIGS. 1 to 3 is accommodated in a housing, for example. At this time, the housing includes, for example, a first housing member disposed behind the liquid crystal display module and a second housing member disposed on the front side as viewed from the observer. At this time, the components such as the liquid crystal display module 12 are accommodated in a first box member 13 having a substantially box shape, for example, as shown in FIG. A so-called liquid crystal display device such as a television is obtained by covering a second housing member (not shown) from above and fixing the first housing member 13 and the second housing member by screws or the like. It is done.

  Further, in the liquid crystal display device according to the third embodiment, for example, as shown in FIGS. 21 and 22, for positioning in a region of the bottom surface of the first housing member 13 facing the liquid crystal display module 12 (lower frame 2). 13A is provided. Further, the lower frame 2 is provided with a positioning opening 2D into which the positioning projection 13A of the first housing member 13 is inserted.

  At this time, the opening 2D of the lower frame 2 is provided, for example, at a portion bent on the liquid crystal display panel 1 side of the reflector 14 disposed between the lower frame 2 and the liquid crystal display panel 1 (light diffusion plate 5). . Further, the opening 2D of the lower frame is formed, for example, by opening the periphery of the opening end by punching with a mold and then bending the periphery of the opening end toward the liquid crystal display panel 1 side. Furthermore, as shown in FIGS. 22 and 23, the opening 2D of the lower frame is bent so that the surface (entrance) side into which the positioning projection 13A of the first housing member 13 is inserted is curved. Process.

  On the other hand, the positioning projection 13A of the first housing member 13 has a pedestal wider than the opening area of the opening of the lower frame at the height **, as shown in FIGS. 22 and 23, for example. A portion 13B is provided so that a gap of a distance Δd is formed between the housing 13 and the lower frame 2 when the liquid crystal display module 12 is placed. At this time, the distance Δd between the first housing member 13 and the lower frame 2 (the liquid crystal display module 12) is adjusted by changing the height of the pedestal portion 13B, and is attached to the lower frame 2, for example. The TCON substrate is prevented from coming into contact with the first casing member.

  At this time, the protrusion 13A of the first housing member chamfers the tip portion so as to be easily inserted into the opening 2D of the lower frame, for example. The chamfer angle of the tip portion is, for example, about 15 degrees. Further, the height of the portion where the protrusion 13A of the first housing member is chamfered and the portion which is not chamfered are, for example, 1: 1.

  In addition, the opening 2D for alignment of the lower frame 2 is configured such that, for example, the diameter after the opening end is bent is larger than the diameter of the protrusion 13A of the first housing member 13. At this time, the clearance Δx between the opening 2D of the lower frame and the projection 13A of the first housing member is set to about 0.1 mm, for example.

  When the positioning projection 13A and the positioning opening 2D having such a configuration are provided, even when a displacement occurs when the liquid crystal display module 12 is placed on the first housing member 13, Since the protrusion 13A of the first housing member 13 slides along the curved surface of the opening 2D of the lower frame 2, the liquid crystal display module 12 can be easily placed at the correct position as shown in FIG.

  Further, in the conventional assembling method, when the liquid crystal display module 12 is placed on the first housing member 13, the positioning projections 13 </ b> A provided on the first housing member 13 form the liquid crystal display module 12. Therefore, for example, it is common to align a marker or the like provided in a region that does not overlap the liquid crystal display module 12, and the alignment workability is poor.

  On the other hand, with the configuration as in the third embodiment, the liquid crystal display module 12 can be installed at the correct position if there is an approximate position, so that the alignment workability is good and the liquid crystal display device is assembled. Efficiency is improved.

  As described above, according to the liquid crystal display device of the third embodiment, the alignment when the liquid crystal display module 12 is placed on the first casing member 13 can be easily performed, and the alignment accuracy can be improved. it can. For this reason, not only manual assembly but also automatic assembly using an assembly apparatus can reduce mounting defects due to misalignment, and can improve the productivity of the display device.

  FIG. 24 is a schematic cross-sectional view for explaining a modification of the liquid crystal display device according to the third embodiment. FIG. 24 is a view corresponding to a cross section taken along line E-E ′ of FIG. 21.

  In the liquid crystal display device shown in FIGS. 21 to 23, the first housing member 13 is provided with positioning protrusions 13 </ b> A and a pedestal portion 13 </ b> B, and the lower frame 2 is provided with an opening 2 </ b> D for alignment. Positioning work when placing the liquid crystal display module 12 on one housing member 13 is facilitated. However, when the liquid crystal display module 12 is placed on the first housing member 13 as in the third embodiment, the present invention is not limited to this. For example, as shown in FIG. And an opening 13C for alignment may be provided in the first housing member 13.

  At this time, the positioning projection 2E of the lower frame 2 may be formed by, for example, drawing using a mold.

  Further, the opening 13C for alignment of the first housing member 13 may be formed in the same manner as the opening 301A for alignment of the upper frame 301 described in the second embodiment, for example. At this time, the distance Δd between the first casing member 13 and the lower frame 2 (liquid crystal display module 12) is, for example, the amount of protrusion of the opening 13C of the first casing member 13 toward the lower frame 2 For example, the TCON substrate 9 attached to the lower frame 2 may be prevented from coming into contact with the first housing member 13.

  In the third embodiment, the first casing member 13 and the alignment portion of the lower frame 2 (the liquid crystal display module 12) are focused on, and only the configuration thereof is described. It goes without saying that the configuration of the mounting portion between the TCON substrate 9 and the lower frame 2 and the configuration of the alignment portion between the support member 6 and the upper frame 3 described in the second embodiment may be combined.

  The present invention has been specifically described above based on the above-described embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention. is there.

  For example, the first to third embodiments have been described on the premise of the liquid crystal display device (module) having the configuration shown in FIGS. 1 to 3, for example. Of course, the present invention can be applied to the liquid crystal display of the configuration. That is, the configuration described in the first embodiment of the present invention can be applied to any liquid crystal display device in which a printed circuit board is attached to a flat surface such as the bottom surface of the lower frame. It does not matter. In addition, the configuration described in the second embodiment can be applied to any display device that supports the outer peripheral portion of the liquid crystal display panel by sandwiching the support member and the upper frame, and any other configuration is possible. Applicable. Further, the configuration described in the third embodiment is applicable as long as it is a liquid crystal display device in which a liquid crystal display module having a lower frame is housed in a casing, and other configurations may be any configuration.

  In the first to third embodiments, the liquid crystal display device (module) having the liquid crystal display panel is taken as an example. However, the present invention is not limited to this, and various display devices (modules) having the same configuration are used. Of course, it can be applied. That is, instead of a liquid crystal display panel, for example, the present invention is applied to a display device using a PDP (Plasma Display Panel), a display device using a self-luminous display panel using an organic EL (ElectroLuminescence), and the like. it can.

DESCRIPTION OF SYMBOLS 1 ... Liquid crystal display panel 101 ... TFT substrate 102 ... Opposite substrate 2 ... Lower frame 2A ... 1st protrusion 2B ... 2nd protrusion 2C ... Opening part 2D ... (For alignment) Opening part 2E ... (For positioning) Projection 3, 301, 302, 303, 304 ... Upper frame 301A ... (for positioning) 4 ... Fluorescent tube 5 ... Light diffusion plate 6, 601, 602, 603, 604 ... Support member 601A ... (for positioning) ) Projection 7A, 7B ... Flexible printed circuit board 8, 8A, 8B ... Rigid printed circuit board 9 ... TCON substrate 9A ... Groove 10, 10A, 10B ... Flexible printed cable 11 ... Screw 12 ... Liquid crystal display module 13 ... First housing Body member 13A ... Protrusion (for positioning) 13B ... Base part 13C ... Opening (for positioning) 14 ... Reflector

Claims (12)

A display panel; a support member disposed on an outer periphery of the display panel as viewed from an observer; and an upper frame disposed on a front side of the display panel as viewed from the observer; A display device supporting an outer peripheral portion of the display panel by the upper frame,
The support member has a positioning protrusion protruding on the upper frame side on a surface facing the upper frame,
The upper frame has an alignment opening that is paired with a positioning protrusion of the support member,
Of the periphery of the alignment opening of the upper frame, the vicinity of the opening end is bent in a direction opposite to the direction in which the support member is located, and the outer region is the support member. A display device which is bent to the side.   2. The display device according to claim 1, wherein an opening end of the alignment opening of the upper frame is formed in a curved shape on a surface side of the bent portion facing the support member.   3. The display device according to claim 1, wherein the positioning opening of the upper frame is located at a base portion of the positioning projection of the support member.   The protrusion amount to the support member side around the opening for alignment of the upper frame is larger than the protrusion amount of the bent portion of the opening end. The display device according to any one of the above.   The display device according to any one of claims 1 to 4, wherein the display panel is a liquid crystal display panel in which a liquid crystal material is sealed between a pair of substrates. A display device having a display module in which a lower frame is arranged behind a display panel, and a housing for housing the display module,
The housing is positioned behind the lower frame when viewed from the observer, and has a plurality of positioning protrusions protruding toward the lower frame on a surface facing the lower frame,
The lower frame has an alignment opening that is paired with the positioning protrusion of the housing,
Out of the periphery of the positioning opening of the lower frame, the vicinity of the opening end is bent in a direction opposite to the surface facing the casing, and the casing of the bent portion The display device is characterized in that the side facing the surface is molded into a curved surface.   The area of the positioning projection of the housing as viewed in a plane is wider than the area where the opening for the alignment of the lower frame is opened. Display device. A display device having a display module in which a lower frame is arranged behind a display panel, and a housing for housing the display module,
The housing is positioned behind the lower frame when viewed from the observer, and has an opening for alignment on a surface facing the lower frame,
The lower frame has a positioning projection that is paired with the positioning opening of the housing,
Out of the periphery of the alignment opening of the casing, the vicinity of the opening end is bent in a direction opposite to the direction in which the lower frame is located, and the outer region is the lower frame. A display device which is bent to the side.   The display device according to claim 8, wherein the opening end of the positioning opening of the casing is formed into a curved surface on the side facing the lower frame of the bent portion.   10. The display device according to claim 8, wherein a periphery of the positioning opening of the housing is located at a base portion of the positioning protrusion of the lower frame.   11. The projection according to claim 8, wherein the positioning opening of the casing has a protruding amount toward the lower frame larger than a protruding amount of the bent portion at the opening end. Item 1. A display device according to item 1.   The display device according to claim 6, wherein the display panel is a liquid crystal display panel in which a liquid crystal material is sealed between a pair of substrates.

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