Display device

Abstract

Provided is a display device which comprises: a display module; a cover bottom coupled to the rear surface of the display module; a rigid bar coupled to a lower end of the cover bottom and extending in the horizontal direction; a panel substrate positioned on the rear surface of the rigid bar; and a flexible substrate having one end connected to a lower end of the display module and the other end that is bent in the rear direction from a lower portion of the cover bottom and connected to the panel substrate.

Description

Display device

[0001] The present invention relates to a display device that reduces manufacturing costs and weight by simplifying the configuration of the rigidity bar of the display device.

[0002] As the information society develops, the demand for display devices is increasing in various forms. In response to this, display devices in recent years include Liquid Crystal Displays (LCDs), Field Emission Displays (FEDs), Plasma Display Panels (PDPs), and Electroluminescence Devices.

[0003] A liquid crystal panel of a liquid crystal display device includes a liquid crystal layer and a TFT substrate and a color filter substrate facing each other with the liquid crystal layer in between, and can display an image using light provided from a backlight unit.

[0004] Recently, materials such as OLEDs can realize flexible display modules because they emit light without a backlight structure on the back, enabling the realization of curved display devices.

[0005] As the thickness of display modules decreases, display devices are becoming larger and lighter. As display devices become thinner and larger, there is a need for small and lightweight components.

[0006] However, as the thickness of the display device decreases and the size increases, a problem arises where the rigidity of the display device weakens. There is a need for a structure that can compensate for rigidity without increasing the weight and thickness of the display device.

[0007] The present invention aims to provide a display device that reduces manufacturing costs and weight by simplifying the configuration of the rigidity bar of the display device.

[0008] A display device is provided comprising: a display module; a cover bottom coupled to the back surface of the display module; a rigid bar coupled to the lower end of the cover bottom and extended in a horizontal direction; a panel substrate located on the back surface of the rigid bar; and a flexible substrate having one end connected to the bottom of the display module and the other end connected to the panel substrate by bending from the bottom of the cover bottom toward the back surface.

[0009] The above cover bottom includes a mounting portion on which a light source substrate is mounted on the front and a control module is mounted on the back; an inclined portion extending forward from the mounting portion at an angle; and an edge portion extending from the inclined portion and located on the back of the guide panel of the display module, and the rigid bar may be fastened to at least one of the inclined portion or the edge portion.

[0010] The rigid bar comprises a front portion located on the back side of the edge portion; a lower portion bent from the front portion toward the back side; and a back portion extended upward from the lower portion, and the upper part of the rigid bar may be open toward the inclined portion.

[0011] The front portion and the rear portion are parallel to each other, and the lower portion may include an inclined surface in which the front portion is located lower than the rear portion.

[0012] It includes a first bar fastening part formed on the edge portion that is connected to the front portion and a second bar fastening part formed on the inclined portion that is connected to the back portion, and the first bar fastening part and the second bar fastening part may be arranged so as to be offset in the horizontal direction so as not to overlap in the thickness direction.

[0013] The second bar fastening portion can protrude from the inclined portion and come into contact with the front surface of the rear portion.

[0014] The above rigid bar may include a concave portion formed at a position corresponding to the second bar fastening portion of the front portion.

[0015] It may include a substrate holder that is fastened to the above-mentioned rear portion and into which the panel substrate is inserted.

[0016] The upper portion of the substrate holder extends to the seating portion of the cover bottom, and the lower portion may protrude forward to contact the lower portion of the rigid bar.

[0017] The display device of the present invention can reduce the manufacturing cost and weight of the product by reducing the number of rigidity bars.

[0018] In addition, the display device of the present invention can more effectively reinforce the area with the weakest rigidity by placing a rigidity bar at the bottom of the cover bottom.

[0019] In addition, the rigidity bar of the display device of the present invention has fastening holes spaced apart in the horizontal direction, and there is no need to form an embossed joint that is concavely recessed for forming the fastening holes, so the rigidity can be enhanced. The effects obtainable from the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present invention belongs from the description below.

[0020] FIG. 1 is a front perspective view illustrating a display device of the present invention.

[0021] FIG. 2 is a rear perspective view illustrating a display device of the present invention.

[0022] FIG. 3 is a drawing showing the state in which the back cover of the display device of the present invention is separated.

[0023] Figure 4 is a drawing illustrating the arrangement of rigidity bars of a conventional cover bottom.

[0024] FIG. 5 is a cross-sectional view of a display device of the present invention.

[0025] Figure 6 is a drawing illustrating an example of arrangement according to the shape of the rigid bar.

[0026] FIG. 7 is a drawing illustrating a rigidity bar of a display device of the present invention.

[0027] FIG. 8 is a drawing showing the lower part of the cover bottom of the display device of the present invention.

[0028] FIG. 9 is a drawing showing a first fastening part and a second fastening part in which a rigid bar is fastened to a cover bottom.

[0029] FIG. 10 is a cross-sectional view illustrating the arrangement of a substrate holder of a display device of the present invention.

[0030] Hereinafter, embodiments disclosed in this specification will be described in detail with reference to the attached drawings. Identical or similar components regardless of drawing symbols will be assigned the same reference number, and redundant descriptions thereof will be omitted. The suffixes "module" and "part" used for components in the following description are assigned or used interchangeably solely for the ease of drafting the specification and do not inherently possess distinct meanings or roles. Furthermore, in describing embodiments disclosed in this specification, if it is determined that a detailed description of related prior art could obscure the essence of the embodiments disclosed in this specification, such detailed description will be omitted. Additionally, the attached drawings are intended only to facilitate understanding of the embodiments disclosed in this specification; the technical concept disclosed in this specification is not limited by the attached drawings, and it should be understood that they include all modifications, equivalents, and substitutions that fall within the spirit and technical scope of the present invention.

[0031] Terms including ordinal numbers, such as first, second, etc., may be used to describe various components, but said components are not limited by said terms. These terms are used solely for the purpose of distinguishing one component from another.

[0032] When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between.

[0033] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0034] In this application, terms such as “comprising” or “having” are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0035] FIG. 1 is a front perspective view illustrating an example of a display device (100), and FIG. 2 is a rear perspective view. An example of a display device (100) illustrates a large screen display device (100) with a thin thickness.

[0036] Recently, as display devices (100) have become thinner but larger in size, rigidity is required to match the large size while keeping the component size small. In line with this trend, each component is becoming thinner and smaller, but structural improvements are required to ensure rigidity.

[0037] Recently, as the size of the non-display area located around the display area of ​​the screen in the display module (150) has decreased, the bezel has become smaller and the ratio of the screen to the size of the display device (100) has increased. Bezel-less designs that appear almost bezel-less are also being released, and the edge case that covers the perimeter of the display device and forms the exterior of the side perimeter can be configured such that the top and left and right sides do not cover the front, and only the bottom is covered.

[0038] It has a layered structure of a cover bottom (240) located on the back of a display module (150) and a back cover (220) coupled to the back of the cover bottom (240).

[0039] A back cover (220) that covers various parts, including a control module (180) located on the back of the cover bottom (240) and forms the back exterior, must be detachable from the cover bottom (240) for maintenance of the control module (180). The connecting part for attaching the back cover (220) to the cover bottom (240) needs to have a structure that is detachable while having a fixing force.

[0040] For maintenance of the display device (100), after mounting the display device (100) so that its front face is facing the floor, the stand assembly (160) coupled to the back cover (220) can be disassembled from the back cover (220), and then the back cover (220) can be separated from the cover bottom (240).

[0041] However, as the size of the display device (100) increases recently, it is difficult to secure space indoors for the display device (100) to be placed on the floor. To resolve this problem, the present invention allows the control module on the back of the cover bottom (240) to be replaced or repaired while the display device (100) is standing vertically through a rear structure of the display device (100) that allows the back cover (220) to be separated without separating the stand assembly (160). FIG. 4 is a drawing showing the state in which the back cover (220) of the display device (100) of the present invention is separated. The rear cover structure of the display device (100) of the present invention may be composed of a back cover (220) that covers a first area where the control module (180) is placed, and a fixing cover (230) located in a second area where the stand assembly (160) is attached.

[0042] The fixed cover (230) may be fastened using screws or the like, and may have a structure that has a strong fastening force and is not easily separated. The back cover (220) may use a locking structure that can be connected and separated by applying a predetermined force, such as a latch or a holder.

[0043] The stand assembly (160) of the display device (100) illustrated in FIGS. 2 and 3 is composed of a single stand assembly (160) located in the center, but may also be provided as a pair spaced apart in the left and right directions. In this case, the fixing cover (230) may be provided as a pair.

[0044] Alternatively, in the case of a display device (100) supported by a pair of stand assemblies (160), the back cover (220) can be removed while the display device (100) is standing upright by attaching the temporary stand assembly (160) to the fixed cover (230) and then separating the existing stand assembly (160).

[0045] Since it would be difficult to manufacture, transport, and assemble the back cover (220) of the display device (100) of the present invention if it were composed of a single piece, it can be composed of two pieces as shown in FIG. 3. The first back cover (220a) and the second back cover (220b) can be arranged adjacent to each other in the left-right direction, and the fixing cover (230) can be located between the first back cover (220a) and the second back cover (220b).

[0046] FIG. 3 is a drawing showing the state in which the back cover of the display device (100) of the present invention is separated. The cover bottom (240), which is located on the front of the back cover (220a, 220b) of the present invention and is located on the back of the display module (150), supports the back of the display module (150) and mounts components constituting the control module (180), such as a substrate and various cables.

[0047] While the size of the display device (100) increases, the thickness decreases, and the thickness of the display module (150) decreases, so the thickness of the cover bottom (240) also tends to decrease. If the thickness of the cover bottom (240) increases, the weight and thickness of the display device (100) increase, and manufacturing costs increase. Therefore, it is necessary to increase the rigidity of the cover bottom (240) by an additional method while minimizing the increase in thickness.

[0048] As a first method, rigidity can be enhanced by forming a bead (246) on the back surface of the cover bottom (240). However, the bead (246) alone is insufficient to maintain the rigidity of the entire display device (100) with a rigidity of 0.6T cover bottom (240).

[0049] As a second method, the rigidity of the display device (100) can be enhanced by adding a rigidity bar (260) to the cover bottom (240). The rigidity bar (260) may be a metal bar having a predetermined length made of a rigid material.

[0050] FIG. 4 is a drawing illustrating the arrangement of the rigidity bar (260) of a conventional cover bottom (240). In the past, the rigidity bar (260) was also used to increase the rigidity of the cover bottom (240), but as shown in FIG. 4, it was arranged in a rectangular shape.

[0051] However, this method has the problem that the total weight and material costs increase due to the large number of rigid bars (260). Additionally, as shown in the enlarged view, the rigid bar (260) can be constructed by folding a sheet metal parallel to the length direction, rather than having a solid shape, to account for the weight.

[0052] A rigid bar (260) having a U-shaped cross-section is positioned so that its open side faces the cover bottom (240), and as shown in the enlarged view of FIG. 4, the front side is open. In order to connect the rigid bar (260) with the cover bottom (240) located on the front of the rigid bar (260), the rigid bar (260) requires an embossed joint (260a) that protrudes the connecting part concavely forward.

[0053] If the number of embossed joints (260a) is large, the rigidity of the rigidity bar (260) is weakened, and if the number of embossed joints (260a) is small, there is a limitation in that it is difficult to transmit the force that prevents deformation of the cover bottom (240).

[0054] Accordingly, the present invention aims to reduce the number of rigidity bars (260) and improve rigidity by changing the shape and arrangement of the rigidity bars (260) from the conventional configuration. Referring to FIG. 3, the display device (100) of the present invention may have one rigidity bar (260) arranged at the bottom. The display device (100) includes a complex structure, such as having a panel substrate (155) seated at the bottom, and is most vulnerable to rigidity, but the present invention places the rigidity bar (260) at the place with the weakest rigidity, thereby obtaining a sufficient effect of preventing bending deformation with a small number of rigidity bars (260).

[0055] FIG. 5 is a cross-sectional view of a display device (100) of the present invention. Referring to FIG. 5, the display module (150) of the present invention has a plurality of layered structures including a liquid crystal panel (151), and may include a guide panel (153) positioned around the perimeter of the display module (150) in a frame shape for aligning the plurality of layered structures.

[0056] As shown in FIG. 5, the guide panel (153) can support the layered structure of the display panel (151) and simultaneously secure the perimeter of the cover bottom (240). The cover bottom (240) may include a mounting portion (242) on which a control module (180) is mounted on the back surface and an LED substrate, which is the light source of the display module (150), is mounted on the front surface. The mounting portion (242) occupies most of the area of ​​the cover bottom (240) and may include a protruding bead (246) protruding backward for rigidity or securing.

[0057] It may include an inclined portion (243) that extends obliquely forward from the circumference of the seating portion (242) and an edge portion (244) that contacts the back surface of the guide panel (153) at the end of the inclined portion (243). The edge portion (244) may have its end bent forward so as to be inserted into and fastened to the guide panel (153). It may include an edge portion (244) that is fastened to the guide panel (153).

[0058] The rigid bar (260) of the present invention may be placed in the space between the back of the edge portion (244) and the lower part of the inclined portion (243). The rigid bar (260) of the present invention may include a front portion (261) that contacts the back of the edge portion (244), a lower portion (262) that is bent toward the back from the bottom of the edge portion (244), and a back portion (263) that is bent toward the upper side. It has a U-shaped configuration composed of the front portion (261), the lower portion (262), and the back portion (263), and the upper surface is open and faces the inclined portion (243) of the cover bottom (240).

[0059] FIG. 6 is a drawing illustrating an example of arrangement according to the shape of the rigid bar (260). When the rigid bar (260) includes a portion that contacts an inclined surface as shown in FIG. 6 (a), the opening has an undercut shape in which the entrance is narrow and widens towards the inside. The undercut shape has a problem of poor mass production due to manufacturing difficulties.

[0060] As shown in Fig. 6(b), the rigid bar (260) may be configured in an L-shape. However, the rigid bar (260) of this embodiment has a limitation in that it does not perform sufficiently as a rigid bar (260) because it has only one fold line and the area of ​​the member forming the rigid bar (260) is small.

[0061] Accordingly, the present invention may use a rigid bar (260) in the form of a lower portion (262) connecting the front portion (261) and the rear portion (263) as shown in (c) of FIG. 6.

[0062] The front portion (261) and the back portion (263) of the rigid bar (260) can be configured to be parallel, the front portion (261) is in contact with the back surface of the edge portion (244), and the back portion (263) can form a plane that is continuous with the seating portion (242) or is located slightly forward of the seating portion (242).

[0063] FIG. 7 is a drawing illustrating a rigid bar (260) of a display device (100) of the present invention, and FIG. 8 is a drawing illustrating the lower part of a cover bottom (240) of a display device (100) of the present invention. FIG. 9 is a drawing illustrating a first bar fastening part (2461) and a second bar fastening part (2462) that fasten the rigid bar (260) to the cover bottom (240).

[0064] Referring to FIGS. 7 and 8, let us examine the structure for fastening the rigid bar (260) of the present invention to the cover bottom (240).

[0065] The edge portion (244) of the cover bottom (240) may include a first bar fastening portion (2461) that secures the front portion (261) of the rigid bar (260) with a fastener such as a screw (268). Since the rear portion (263) covers the rear of the front portion (261), the front portion (261) and the edge portion (244) cannot be fastened from the rear.

[0066] The rigid bar (260) can be fastened by inserting a screw (268) into the first fastening hole (2651) formed in the front portion (261) of the rigid bar (260) from the front to the back direction, as shown in FIG. 9 (a), before mounting the display module (150) on the cover bottom (240).

[0067] When only the front portion (261) of the rigid bar (260) is fastened with a screw (268), the fastening force is weak and there are limitations in preventing bending deformation of the cover bottom (240). Accordingly, the rear portion (263) of the rigid bar (260) of the present invention may also include a second bar fastening portion (2462, see FIG. 8) protruding from the rear surface of the cover bottom (240) to fasten it to the cover bottom (240). The second bar fastening portion (2462) may protrude on the inclined portion (243) so as to come into contact with the front surface of the rear portion (263) of the rigid bar (260).

[0068] As shown in FIG. 9(b), the cover bottom (240) and the back portion (263) of the rigid bar (260) can be fastened by inserting a screw into the second fastening hole (2652) formed in the back portion (263) of the rigid bar (260) and the second bar fastening portion (2462) on the front of the cover bottom (240).

[0069] The second fastening hole (2652) located on the back side (263) may be exposed in the back direction and fastened from the rear, but in this case, the fastening process of the rigid bar (260) must be performed twice, once on the front and once on the back, and in order for the panel substrate (155) to be seated on the back side of the rigid bar (260), it is necessary to remove the protruding structure on the back side of the rigid bar (260).

[0070] Referring to FIG. 7, the front portion (261) located in front of the second fastening hole (2652) may include a concave portion (266) that is recessed downward. As the second bar fastening portion (2462) protrudes in the rearward direction as shown in FIG. 8, the concave portion (266) is intended to provide a space through which the second bar fastening portion (2462) can pass.

[0071] If the first bar fastening part (2461) and the second bar fastening part (2462) are in the same horizontal position, stress may be concentrated in similar positions. To prevent this, as shown in FIG. 7, the first bar fastening part (2461) and the second bar fastening part (2462) may be spaced apart in the horizontal direction.

[0072] FIG. 10 is a cross-sectional view illustrating the arrangement of a substrate holder (157) of a display device (100) of the present invention. A panel substrate (155) connecting the display module (150) and the control module (180) may be located on the back surface of the rigid bar (260) of the present invention. The panel substrate (155) may be located at the bottom of the cover bottom (240) as shown in FIG. 5, and may be arranged to partially overlap with the rigid bar (260).

[0073] A flexible substrate (156) connecting the display module (150) and the panel substrate (155) can be connected to the panel substrate (155) by extending from the bottom of the display module (150) and passing through the bottom of the cover bottom (240) and the rigid bar (260). The guide panel (153) can be partially omitted (153a) in the area through which the flexible substrate (156) passes, as shown in FIG. 8, to form a passage for the flexible substrate (156).

[0074] A substrate holder (157) may be used to secure a panel substrate (155) that is fastened to the lower part of the cover bottom (240). A conventional substrate holder (157) may be inserted into a holder hole (264) formed in the seating portion (242) or the inclined portion (243) of the cover bottom (240). Conventionally, due to the seating of the panel substrate (155) and the placement of the substrate holder (157), a rigid bar (260) could not be placed at the lower part of the cover bottom (240).

[0075] However, the present invention can fix the substrate holder (157) by utilizing the shape of the inclined portion (243) to place a rigid bar (260) on the lower part of the cover bottom (240) and forming a holder hole (264) in the rigid bar (260).

[0076] The substrate holder (157) can be fixed to the fixing bar (260) by inserting the holder projection (157b) protruding forward from the substrate holder (157) into the holder hole (264). The substrate holder (157) may include a C-shaped substrate fixing part (157a) that surrounds the upper and lower parts of the panel substrate (155). As shown in FIG. 10, the substrate fixing part (157a) may extend to the upper part of the rigid bar (260) and reach the seating part (242) of the cover bottom (240).

[0077] Additionally, since one substrate holder (157) is fastened to one holder hole (264), the substrate holder (157) can rotate. The lower end of the substrate holder (157) can be configured to protrude forward and come into contact with the lower end (262) of the rigid bar (260).

[0078] The holder hole (264) can be positioned so as not to overlap with the first fastening hole (2651) and the second fastening hole (2652) described above, and the panel substrate (155) can be fixed to the substrate holder (157) as shown in FIG. 5.

[0079] The display device (100) of the present invention can reduce the manufacturing cost and weight of the product by reducing the number of rigid bars (260).

[0080] In addition, the display device (100) of the present invention can more effectively reinforce the area with the weakest rigidity by placing a rigidity bar (260) at the bottom of the cover bottom (240).

[0081] In addition, the rigid bar (260) of the display device (100) of the present invention has fastening holes spaced apart in the horizontal direction, and there is no need to form an embossed joint (260a) for forming fastening holes in the rigid bar, so the rigidity can be enhanced.

[0082] The foregoing detailed description should not be interpreted restrictively in all respects and should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention.

[0083] Regarding various embodiments for implementing the present invention, descriptions that are redundant with those described above in the previous section on the best mode for carrying out the invention are omitted.

[0084] Since the present invention is applicable to display devices in various fields, its industrial applicability is recognized.

Claims

1. Display module; A cover bottom coupled to the back surface of the above-mentioned display module; A rigid bar extending horizontally and coupled to the lower end of the above-mentioned cover bottom; A panel substrate located on the back surface of the above rigid bar; and A display device comprising a flexible substrate having one end connected to the bottom of the display module and the other end connected to the panel substrate by bending in the rearward direction from the bottom of the cover bottom.

2. In Paragraph 1, The above cover bottom is A mounting section on which a light source substrate is mounted on the front and a control module is mounted on the back; An inclined portion extending forward at an angle from the above-mentioned seating portion; It includes an edge portion that extends from the inclined portion and is located on the back surface of the guide panel of the display module, A display device characterized in that the above rigid bar is fastened to at least one side of the above inclined portion or the above edge portion.

3. In Paragraph 2, The above rigid bar is A front portion located on the back surface of the above edge portion; A lower portion bent from the front portion toward the rear direction; and It includes a rear portion extending upward from the lower portion, and A display device characterized in that the upper part of the above rigid bar is open toward the above inclined portion.

4. In Paragraph 3, The above front portion and the above rear portion are parallel to each other, A display device characterized by the above-mentioned lower portion including an inclined surface in which the front portion is located lower than the rear portion.

5. In Paragraph 3, A first bar fastening part formed on the edge portion and fastened to the front portion with a screw, It includes a second bar fastening part formed on the inclined portion and fastened to the back portion with a screw, A display device characterized in that the first bar fastening part and the second bar fastening part are arranged horizontally offset so as not to overlap in the thickness direction.

6. In Paragraph 5, A display device characterized in that the second bar fastening portion protrudes from the inclined portion and contacts the front surface of the rear portion.

7. In Paragraph 6, The above rigid bar is A display device characterized by including a recess formed at a position corresponding to the second bar fastening portion of the front portion.

8. In Paragraph 3, A display device characterized by including a substrate holder that is fastened to the above-mentioned rear portion and into which the panel substrate is inserted.

9. In Paragraph 8, The above substrate holder The upper part extends to the seating portion of the above-mentioned cover bottom, and A display device characterized by the lower portion protruding forward to contact the lower portion of the rigid bar.

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