Backboard, backlight module and display device

Abstract

The utility model provides a back plate, a backlight module and a display device, and belongs to the technical field of display. The side wall is arranged on at least one side of the bottom plate; wherein a pre-bending groove is formed in the position, close to the side wall, of the bottom plate, the pre-bending groove extends in the length direction of the side wall, a plurality of supporting units are formed in the pre-bending groove, and the multiple supporting units divide the pre-bending groove into multiple sections of structures in the length direction of the pre-bending groove. According to the backboard, the backlight module and the display device, the situation that the lamp panel sinks can be reduced, the assembly efficiency of devices is improved, and the yield of the devices is increased.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a backplane, a backlight module and a display device. Background Art

[0002] In thin-film transistor liquid crystal displays (TFT-LCDs), the backplane forms the main structure of the backlight and supports other components. The backplane typically consists of a base plate and sidewalls perpendicular to the base plate. These two elements are typically formed through a stamping process. Pre-bent grooves are formed in the base plate before stamping to ensure the correct angle between the base plate and the sidewalls. However, the width of the pre-bent grooves can vary depending on the stamping process and the thickness of the backplane.

[0003] After assembling the light board and related components, if the width of the pre-bent groove is greater than or equal to the width of the light board, the light board will sink, causing the height of the LED (Light-Emitting Diode) to be lower than the light guide plate. This will change the incident light angle, resulting in poor display quality and affecting the display device's light quality. Utility Model Content

[0004] The present application provides a back panel, a backlight module and a display device, aiming to reduce the occurrence of light panel sinking, improve the assembly efficiency of the device, and improve the yield of the device.

[0005] A first aspect of an embodiment of the present application provides a backplane, comprising:

[0006] base plate;

[0007] a side wall, provided on at least one side of the bottom plate;

[0008] A pre-bent groove is provided on the bottom plate adjacent to the side wall, and the pre-bent groove extends along the length direction of the side wall. A plurality of support units are formed in the pre-bent groove, and the plurality of support units divide the pre-bent groove into multiple sections along the length direction of the pre-bent groove.

[0009] Optionally, the pre-bending groove is integrally formed with the plurality of support units.

[0010] Optionally, the surface of the supporting unit is flush with the surface of the bottom plate.

[0011] Optionally, the distance between two adjacent support units is greater than or equal to 5.0 cm and less than or equal to 6.0 cm.

[0012] Optionally, a dimension of the support unit in the length direction of the pre-bending groove is greater than or equal to 1.8 mm and less than or equal to 2.2 mm.

[0013] Optionally, a dimension of the support unit in a width direction of the pre-bending groove is less than or equal to a width of the pre-bending groove.

[0014] A second aspect of the embodiment of the present application provides a backlight module, comprising the back panel and the light panel assembly provided in the first aspect of the embodiment of the present application;

[0015] At least one supporting surface of the light panel assembly contacts a plurality of supporting units on the back panel.

[0016] Optionally, the light board assembly includes a light board and a light emitting diode arranged on the light board;

[0017] The first surface of the light board is connected to the side wall of the back board, and the light emitting diode is arranged on the second surface of the light board, and the second surface is the side of the light board away from the side wall;

[0018] The backlight module further includes a light guide plate, and a side surface of the light guide plate faces the light emitting surface of the light emitting diode.

[0019] Optionally, the light board further includes a supporting surface, the supporting surface is connected to the first surface and the second surface, and the supporting surface is in contact with the plurality of supporting units.

[0020] A third aspect of the embodiments of the present application provides a display device, comprising the backlight module provided in the second aspect of the embodiments of the present application and a display panel arranged on the backlight module.

[0021] Beneficial effects:

[0022] The present application provides a back panel, a backlight module and a display device, wherein the back panel includes a base panel and a side wall arranged on at least one side of the base panel, wherein a pre-bent groove is provided on the base panel adjacent to the side wall, the pre-bent groove extends along the length direction of the side wall, and a plurality of support units are formed in the pre-bent groove, and the plurality of support units divide the pre-bent groove into a plurality of sections along the length direction of the pre-bent groove; in this way, after assembling the light board and the back panel, the support units in the pre-bent groove can support the light board, thereby reducing the situation where the light board sinks into the pre-bent groove, improving the assembly efficiency of the device, and improving the yield of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1This is a schematic structural diagram of a backplane proposed in one embodiment of the present application;

[0025] Figure 2 This is a partial structural diagram of a back panel, a light panel, and a light guide panel after assembly according to an embodiment of the present application;

[0026] Figure 3 This is a schematic diagram of a structure in which support units in a backplane are distributed at equal intervals, as proposed in one embodiment of the present application;

[0027] Figure 4 This is a structure proposed in an embodiment of the present application in which the side wall of the support unit in the back panel does not contact the inside of the pre-bent groove.

[0028] Figure 5 This is a structural schematic diagram of unequally spaced support units in a backplane proposed in one embodiment of the present application.

[0029] Explanation of the accompanying reference numerals: 11, bottom plate; 12, side wall; 13, pre-bent groove; 14, light board; 15, light guide plate; 16, light-emitting diode; 20, support unit. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] Reference Figure 1 and Figure 2 The figure shows a backplane disclosed in an embodiment of the present application. The backplane is used in a backlight module in a liquid crystal display device. The backplane can be connected to a plastic frame to carry and fix the light board 14, reflector, light guide plate 15, etc. in the backlight module. The backplane includes a bottom plate 11 and side walls 12.

[0032] Specifically, the side wall 12 is located on at least one side of the bottom plate 11. That is, the structure of the back plate can be a combination of the bottom plate 11 and one side wall 12, or a combination of the bottom plate 11 and two side walls 12, or a combination of the bottom plate 11 and three side walls 12, or a combination of the bottom plate 11 and four side walls 12. It is understandable that the side wall 12 is perpendicular to the bottom plate 11, so that the accommodating cavity enclosed by the bottom plate 11 and the side wall 12 can be used for other components in the backlight module. In the embodiment of the present application, for the sake of convenience, the back plate is a combination of the bottom plate 11 and one side wall 12.

[0033] Reference Figure 1As shown, the bottom plate 11 and the side walls 12 can be formed by stamping the edges of a sheet of material. Since the bottom plate 11 and the side walls 12 are perpendicular to each other, a pre-bent groove 13 is provided on the bottom plate 11 adjacent to the side walls 12 to ensure a perpendicular angle between them. The pre-bent groove 13 extends along the length of the side walls 12. It should be noted that the pre-bent groove 13 is formed before the sheet of material is stamped, i.e., the pre-bent groove 13 is formed before the side walls 12. In this embodiment of the present application, the side walls 12 are used for comparison only to facilitate the description of the structure of the pre-bent groove 13.

[0034] However, due to different stamping processes or the influence of backplane thickness, the width of the pre-bent groove 13 varies in different backplanes. When the light board 14 in the backlight module is assembled with the backplane, the light board 14 is generally bonded to the side wall 12 by fixing adhesive, and the length of the light board 14 extends along the length of the side wall 12. Therefore, the position of the light board 14 is relative to the position of the pre-bent groove 13. Therefore, the length of the pre-bent groove 13 is generally greater than the length of the light board 14. If the width of the pre-bent groove 13 is greater than the width of the light board 14 itself, then the light board 14 may sink into the pre-bent groove 13, causing the height of the LED on the light board 14 to be lower than the light guide plate 15 in the backlight module, resulting in a change in the entry angle of the backlight module, and ultimately affecting the display effect of the entire display device.

[0035] For this purpose, refer to Figure 1 and Figure 2 As shown, in the embodiment of the present application, a plurality of support units 20 are disposed within the pre-bent groove 13. The plurality of support units 20 are spaced apart along the length of the pre-bent groove 13, dividing the pre-bent groove 13 into multiple sections. In other words, the plurality of support units 20 divide the pre-bent groove 13 into multiple sections, each of which is shorter than the length of the light board 14. This prevents the light board 14 from sinking into the pre-bent groove 13 even if the width of the pre-bent groove 13 is greater than the width of the light board 14. Alternatively, the plurality of support units 20 can be considered to support the light board 14, thereby preventing it from sinking.

[0036] At the same time, in order to ensure that the light board 14 and the light guide plate 15 remain aligned, in the embodiment of the present application, the surface of the support unit 20 is flush with the surface of the base plate 11 (it can also be understood that the thickness of the support unit 20 is the same as the depth of the pre-bent groove 13), that is, the bottom of the light board 14 The part that contacts the support unit 20 and the part that contacts the base plate 11 are in the same plane, thereby ensuring that the assembly position of the light board 14 is more precise.

[0037] It should be noted that in order to ensure the effect of the pre-bent groove 13 on the right angle between the bottom plate 11 and the side wall 12 , the size of the support unit 20 needs to be slightly smaller, but still needs to be able to support the light board 14 .

[0038] To this end, the dimension of the support unit 20 in the longitudinal direction of the pre-bending groove 13 is greater than or equal to 1.8 mm and less than or equal to 2.2 mm. For example, the dimension of the support unit 20 in the longitudinal direction of the pre-bending groove 13 can be 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, etc.

[0039] The width direction of the pre-bending groove 13 of the support unit 20 can be less than or equal to the width of the pre-bending groove 13 itself. The width direction of the pre-bending groove 13 is perpendicular to the length direction of the pre-bending groove 13. Figure 4 As shown, when the dimension of the support unit 20 in the width direction of the pre-bending groove 13 is smaller than the width of the pre-bending groove 13 itself, the side wall of the support unit 20 does not contact the inner wall of the pre-bending groove 13; Figure 3 As shown, when the dimension of the support unit 20 in the width direction of the pre-bent groove 13 is equal to the width of the pre-bent groove 13 itself, the side wall of the support unit 20 contacts the inner wall of the pre-bent groove 13; those skilled in the art can make settings according to actual needs.

[0040] The dimension of the support unit 20 in the width direction of the pre-bending groove 13 is greater than or equal to 0.60 mm and less than or equal to 0.80 mm. For example, the dimension of the support unit 20 in the width direction of the pre-bending groove 13 is 0.60 mm, 0.65 mm, 0.70 mm, 0.75 mm, 0.80 mm, etc.

[0041] The cross-sectional shape of the support unit 20 can be set to a square or polygonal shape. Correspondingly, the overall shape of the support unit 20 is a square column or a variable column. In the embodiment of the present application, the cross-sectional shape of the support unit 20 is set to a square shape.

[0042] In one embodiment, the support unit 20 can be fixed within the pre-bent groove 13 after the pre-bent groove 13 is formed. Specifically, the support unit 20 can be fixed to the pre-bent groove 13 by bonding or other fixing methods after being pre-fabricated. Since the thickness of the bonding portion needs to be considered, the thickness of the support unit 20 itself is slightly smaller than the depth of the pre-bent groove 13 to ensure that the support unit 20 is flush with the base plate 11.

[0043] In one embodiment, the pre-bend groove 13 and the plurality of support units 20 can also be integrally formed. Specifically, the pre-bend groove 13 and the support units 20 can be formed simultaneously through a stamping process. This eliminates the need to increase the backplane production process, thereby ensuring efficient backplane production. Furthermore, integrally forming the pre-bend groove 13 and the support units 20 can also prevent the position of the support units 20 from shifting, which could result in a poor support for the light panel 14.

[0044] In one embodiment, referring to Figure 3 As shown, the plurality of support units 20 can be arranged in the pre-bent groove 13 at equal intervals. That is, in this embodiment, the spacing between any two adjacent support units 20 is equal. The spacing between any two adjacent support units 20 can be greater than or equal to 5.0 cm and less than or equal to 6.0 cm. For example, the spacing between any two adjacent support units 20 can be 5.0 cm, 5.2 cm, 5.4 cm, 5.6 cm, 5.8 cm, 6.0 cm, etc.

[0045] In one embodiment, referring to Figure 5 As shown, multiple support units 20 can also be arranged in the pre-bent groove 13 in an unequal spacing manner. That is, in this embodiment, the spacing between any two adjacent support units 20 is unequal, and those skilled in the art can set it according to actual needs.

[0046] In one embodiment, in order to make the back plate have stronger supporting strength, the back plate in the embodiment of the present application is set as a steel plate, and the steel plate can be made of SUS stainless steel with a thickness of 0.1mm-0.15mm.

[0047] Based on the same inventive concept, an embodiment of the present application discloses a backlight module, including any of the back panels and a light panel assembly as described above in the embodiment of the present application, wherein at least one supporting surface of the light panel assembly contacts a plurality of supporting units on the back panel. Specifically, the light panel assembly includes a light panel 14 and a light emitting diode 16 arranged on the light panel 14. The light panel 14 includes a first surface, a second surface and a supporting surface, wherein the first surface of the light panel 14 is fixedly connected to the side wall 12 of the back panel by a connecting adhesive layer, and the light emitting diode 16 is arranged on the second surface of the light panel 14. It can be understood that the second surface is the side of the light panel 14 away from the side wall 12, that is, the side opposite to the first surface. At the same time, the backlight module also includes a light guide plate 15, and the side surface of the light guide plate 15 is opposite to the light emitting surface of the light emitting diode 16, so that the light emitted by the light emitting diode 16 can enter the light guide plate 15.

[0048] The supporting surface is a side surface connecting the first surface and the second surface, and the supporting surface is in contact with multiple supporting units 20 on the back panel, so that the entire light panel assembly can be supported by the supporting units without sinking into the pre-bent groove 13; that is, even if the width of the pre-bent groove 13 is greater than the width of the light board 14 in the light panel assembly, the light panel assembly cannot sink into the pre-bent groove 13, thereby ensuring that the light panel assembly can be more accurately aligned with the light guide plate 15, thereby ensuring the incident angle of the device.

[0049] Based on the same inventive concept, an embodiment of the present application discloses a display device, including the backlight module as described above in the embodiment of the present application and a display panel arranged on the backlight module.

[0050] Specifically, the display device may include a computer monitor, a television, a billboard, a laser printer with display function, a telephone, a mobile phone, a personal digital assistant (PDA), a laptop computer, a digital camera, a camcorder, a viewfinder, a vehicle, a large-area wall, a theater screen or a stadium sign, etc.

[0051] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0052] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, an element defined by the phrase "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or terminal device that includes the element.

[0053] The technical solutions provided by this application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of this application. The description of the above embodiments is only intended to help understand this application, and the contents of this specification should not be construed as limiting this application. At the same time, for those skilled in the art, according to this application, there may be various changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all implementation methods here, and obvious changes or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A backplane, characterized in that: include: base plate; a side wall, provided on at least one side of the bottom plate; A pre-bent groove is provided on the bottom plate adjacent to the side wall, and the pre-bent groove extends along the length direction of the side wall. A plurality of support units are formed in the pre-bent groove, and the plurality of support units divide the pre-bent groove into multiple sections along the length direction of the pre-bent groove.

2. The back plate according to claim 1, wherein: The pre-bending groove is integrally formed with the plurality of support units.

3. The back plate according to claim 1, wherein: A surface of the supporting unit is flush with a surface of the bottom plate.

4. The back plate according to claim 1, wherein: The distance between two adjacent support units is greater than or equal to 5.0 cm and less than or equal to 6.0 cm.

5. The back plate according to claim 1, wherein: The dimension of the support unit in the length direction of the pre-bending groove is greater than or equal to 1.8 mm and less than or equal to 2.2 mm.

6. The back plate according to claim 1, wherein: A dimension of the support unit in a width direction of the pre-bending groove is smaller than or equal to a width of the pre-bending groove.

7. A backlight module, characterized in that: Comprising the back panel and light panel assembly according to any one of claims 1 to 6; At least one supporting surface of the light panel assembly contacts a plurality of supporting units on the back panel.

8. The backlight module according to claim 7, wherein: The light board assembly includes a light board and a light emitting diode arranged on the light board; The first surface of the light board is connected to the side wall of the back board, and the light emitting diode is arranged on the second surface of the light board, and the second surface is the side of the light board away from the side wall; The backlight module further includes a light guide plate, and a side surface of the light guide plate faces the light emitting surface of the light emitting diode.

9. The backlight module according to claim 8, wherein: The light board further includes a supporting surface connected to the first surface and the second surface, and the supporting surface is in contact with the plurality of supporting units.

10. A display device, characterized in that: It comprises the backlight module according to any one of claims 7 to 9 and a display panel arranged on the backlight module.

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