Backlight positioning structure, backlight module and display device

Abstract

The utility model relates to a backlight positioning structure, a backlight module and a display device, and the backlight module comprises a backlight plate which is provided with a first positioning convex point, a second positioning convex point and a third positioning convex point, and the first positioning convex point, the second positioning convex point and the third positioning convex point are arranged at intervals in the first direction; the lamp panel is provided with limiting holes, receding holes and positioning holes, the limiting holes, the positioning holes and the receding holes are formed in the first direction at intervals, the limiting holes are connected with the first positioning protruding points in a clamped mode, the receding holes allow the second positioning protruding points to penetrate through, and the positioning holes are connected with the third positioning protruding points in a clamped mode; wherein the circumference diameter of the limiting hole is matched with the circumference diameter of the positioning convex point, and the size of the avoiding hole is larger than that of the positioning hole. The limiting holes are connected with the first positioning protruding points in a clamped mode, the positioning holes are connected with the third positioning protruding points in a clamped mode, overall positioning of the lamp panel is achieved, avoiding of the second positioning protruding points is achieved through the avoiding holes, and the same backlight plate can be compatible with the lamp panel of at least three subareas.

Description

Technical Field

[0001] The present application relates to the field of display technologies, and particularly to a backlight positioning structure, a backlight module, and a display device. Background Art

[0002] With the development of the liquid crystal display industry, Mini LED, as an emerging technology for liquid crystal displays (LCDs), has been greatly penetrated into the market because of its characteristics of high brightness, high contrast ratio, and high color gamut, which can improve the picture quality and enhance the user's viewing experience. The Mini LED multi-zone backlight technology is a technology that divides the backlight board into multiple zones, and each zone can independently control the brightness and turn off, which can significantly improve the light and dark layering and detail display of the TV, making the picture more transparent and vivid.

[0003] Currently, due to the different pitches of the LED chips on different light boards, in order to avoid the LED chips, the pitch of the positioning bumps designed on the backlight board corresponding to different light boards is also different, which results in the same backlight board being unable to be compatible with multiple-zone light boards, increasing the cost of model change and mold adjustment. Summary of the Utility Model

[0004] The present application provides a backlight positioning structure, a backlight module, and a display device to solve the technical problem that the same backlight board in the prior art cannot be compatible with multiple-zone light boards, increasing the cost of model change and mold adjustment.

[0005] In a first aspect, the present application provides a backlight module, including: a backlight board provided with a first positioning bump, a second positioning bump, and a third positioning bump, the first positioning bump, the second positioning bump, and the third positioning bump being arranged at intervals along a first direction, and the three positioning bumps being arranged at intervals along the first direction; and a light board provided with a limiting hole, an avoidance hole, and a positioning hole, the limiting hole, the positioning hole, and the avoidance hole being arranged at intervals along the first direction, the limiting hole being snap-connected to the first positioning bump, the avoidance hole allowing the second positioning bump to pass through, and the positioning hole being snap-connected to the third positioning bump; wherein, the diameter of the limiting hole is adapted to the diameter of the positioning bump, and the size of the avoidance hole is larger than the size of the positioning hole.

[0006] In a possible implementation manner, the first positioning bump, the second positioning bump, and the third positioning bump are set to be cylindrical and have the same diameter, and the limiting hole is set to be circular.

[0007] In a possible implementation manner, the positioning hole is an oval hole, having a first length in the first direction and a first width in a second direction, the first direction intersecting with the second direction, the first width of the positioning hole being adapted to the diameter of the third positioning bump, and the first length of the positioning hole being greater than the diameter of the third positioning bump.

[0008] In a possible implementation, the first length of the positioning hole is L, the diameter of the limiting hole is D, and 3D ≤ L ≤ 5D.

[0009] In a possible implementation, the avoidance hole is set as an oval hole. The avoidance hole has a second length in the first direction and a second width in the second direction. The second length of the avoidance hole is greater than the diameter of the second positioning bump, and the second width of the avoidance hole is greater than the diameter of the second positioning bump.

[0010] In a possible implementation, the second width of the avoidance hole is W, the diameter of the limiting hole is D, and 1.2D ≤ W ≤ 1.4D.

[0011] In a possible implementation, the avoidance hole is located between the limiting hole and the positioning hole.

[0012] In a possible implementation, there are multiple avoidance holes. The multiple avoidance holes are arranged at intervals in the first direction, and at least two avoidance holes are respectively arranged on both sides of the limiting hole or the positioning hole.

[0013] In a second aspect, the present application provides a backlight module, including the backlight positioning structure as described above.

[0014] In a third aspect, the present application provides a display device, including: a display panel, and the backlight module as described above. The backlight module is arranged on the backlight side of the display panel and is used to provide light sources for the display panel.

[0015] The above technical solutions provided by the embodiments of the present application have the following advantages compared with the prior art:

[0016] For the backlight positioning structure, backlight module and display device provided by the embodiments of the present application, the distance between the first positioning bump and the third positioning bump is adapted to the LED chip pitch of the first type of partitioned light board, the distance between the second positioning bump and the third positioning bump is adapted to the LED chip pitch of the second type of partitioned light board, and the distance between the first positioning bump and the second positioning bump is adapted to the LED chip pitch of the third type of partitioned light board. If it is necessary to install one of the partitioned light boards, the limiting hole on the light board is snap-connected to the first positioning bump to realize the X-direction and Y-direction limiting at this position, and the positioning hole on the light board is snap-connected to the third positioning bump to realize the X-direction limiting at this position. At this time, the overall positioning of the light board can be realized, avoiding the influence on the installation accuracy between the light board and the backlight board due to processing errors. The avoidance hole can be used to avoid the second positioning bump. Therefore, through the above positioning structure, the same backlight board can be compatible with at least three types of partitioned light boards, realizing the differential derivation of multiple different partitioned products of different grades, reducing the cost of model change and mold adjustment, improving the versatility of the backlight board, and reducing the problem of surplus materials of the backplane. Description of the Drawings

[0017] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present invention and, together with the specification, are used to explain the principles of the present invention.

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] One or more embodiments are exemplarily illustrated by the pictures in the corresponding accompanying drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the drawings in the figures do not constitute a scale limitation.

[0020] Figure 1 Shows a schematic structural diagram of a backlight module with a thousand partitions in the prior art;

[0021] Figure 2 Shows a schematic diagram of lamp boards with different partitions mounted on the backlight board, where (a) is a schematic diagram of the installation of a thousand partitions, and (b) is a schematic diagram of the installation of two thousand partitions;

[0022] Figure 3 Shows a schematic structural diagram of a backlight positioning structure provided by an embodiment of the present application;

[0023] Figure 4 Shows Figure 3 the schematic structural diagram of the lamp board in

[0024] Explanation of reference numerals in the drawings:

[0025] 1. Backlight board; 11. First positioning bump; 12. Second positioning bump; 13. Third positioning bump; 2. Lamp board; 21. Limiting hole; 22. Avoidance hole; 23. Positioning hole;

[0026] 1 ′ 、Backlight board; 11 ′ 、Positioning bump; 2'. Lamp board; 21 ′ 、Round hole; 22'. Oval hole. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0028] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0029] For ease of description, spatially relative relationship terms may be used in the text to describe the relative positional relationship or movement of one element or feature shown in the figure relative to another element or feature, such as "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", "front", "rear", etc. Such spatially relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or attitude change or movement state change, then these directional indications will change accordingly. For example, an element described as "below other elements or features" or "beneath other elements or features" will subsequently be oriented as "above other elements or features" or "over other elements or features". Therefore, the example term "below" may include the orientations of above and below. The device may be oriented otherwise (rotated 90 degrees or in other directions) and the spatially relative relationship descriptors used in the text are interpreted accordingly.

[0030] In the prior art, as Figure 1 is a backlight module structure with a thousand partitions, including a backlight board 1' and a lamp board 2 arranged in an array on the backlight board 1 ′ on which ′ the entire backlight board 1 ′ is provided with eight identical lamp boards 2 ′ The lamp board 2 ′ is arranged with a number of LED chips in an array. Each LED chip can be individually turned on or off to form a partition. Glue is applied to the side of the lamp board 2 ′ facing away from the LED chips, and then the lamp board 2 ′ is fixed to the backlight board 1 ′To make the light board 2 ′ The installation position is accurate, generally the backlight panel 1 ′ With light board 2 ′ A positioning structure is designed between the backlight panel 1 ′ The upper stamping cylindrical positioning convex point 11 ′ , then light board 2 ′ A positioning circular hole 21 is provided on the left side of ′ , when positioning bump 11 ′ With positioning circular hole 21 ′ After matching, the displacement in the X and Y directions can be realized, and then on the light board 2 ′ A waist round hole 22 is opened on the right side ′ , when positioning bump 11 ′ With round hole 22 ′ After matching, only the displacement in the X or Y direction is limited. Through this positioning structure, the light board 2 can be realized. ′ With backlight panel 1 ′ Precise positioning between Figure 2 As shown, due to the different partitions of the light board 2 ′ The spacing of LED chips is different. In order to avoid the LED chips, the backlight panel 1 ′ Positioning protrusions 11 designed for light panels 2' in different partitions ′ The spacing is also different, which results in the same backlight panel 1 ′ Not compatible with multiple partitions of light panels 2 ′ , increasing the cost of changing models and adjusting molds.

[0031] In order to solve the technical problem in the prior art that the same backlight panel is not compatible with light boards of multiple partitions, thereby increasing the cost of changing styles and adjusting molds, the present application provides a backlight positioning structure, a backlight module and a display device. The backlight panel of the backlight module is compatible with light boards of multiple partitions, thereby reducing the cost of changing styles and adjusting molds.

[0032] Figure 3 A backlight positioning structure provided for an embodiment of the present application includes a backlight panel 1 and a lamp panel 2, the lamp panel 2 is detachably connected to the backlight panel 1, the backlight panel 1 is provided with a first positioning protrusion 11, a second positioning protrusion 12 and a third positioning protrusion 13, and the first positioning protrusion 11, the second positioning protrusion 12 and the third positioning protrusion 13 are arranged at intervals along a first direction; the lamp panel 2 is provided with a limiting hole 21, an avoidance hole 22 and a positioning hole 23, and the limiting hole 21, the positioning hole 23 and the avoidance hole 22 are arranged at intervals, the limiting hole 21 is snap-connected with the first positioning protrusion 11, the avoidance hole 22 is for the second positioning protrusion 12 to pass through, and the positioning hole 23 is snap-connected with the third positioning protrusion 13; wherein, the circumference of the limiting hole 21 is adapted to the circumference of the positioning protrusion 11, and the size of the avoidance hole 22 is larger than the size of the positioning hole 23.

[0033] For ease of illustration and understanding, the first direction may be the X-axis shown in the figure, and the second direction may be the Y-axis shown in the figure.

[0034] It should be noted that among the above-mentioned positioning bumps on the backlight panel 1, the following design can be made: the distance between the first positioning bump 11 and the third positioning bump 13 is adapted to the LED chip pitch of the first type of partitioned light panel (hereinafter referred to as light panel A), the distance between the second positioning bump 12 and the third positioning bump 13 is adapted to the LED chip pitch of the second type of partitioned light panel (hereinafter referred to as light panel B), and the distance between the first positioning bump 11 and the second positioning bump 12 is adapted to the LED chip pitch of the third type of partitioned light panel (hereinafter referred to as light panel C). The above-mentioned first positioning bump 11, second positioning bump 12, and third positioning bump 13 are called a positioning bump group. There may be m rows of positioning bump groups arranged in the second direction and n columns of positioning bump groups arranged in the first direction on the backlight panel 1, so that the positioning bumps are distributed in m rows and n columns, where m≥1 and n≥1, thereby positioning and assembling multiple light panels on the backlight panel 1.

[0035] It can be understood that if it is necessary to install light panel A (such as a one-thousand-zone light panel 2), the limiting hole 21 on the light panel 2 is snap-connected to the first positioning bump 11 to achieve the limiting in the X and Y directions at this position, and the positioning hole 23 on the light panel 2 is snap-connected to the third positioning bump 13 to achieve the limiting in the X direction at this position. At this time, the overall positioning of the light panel 2 can be realized, avoiding the influence of processing errors on the installation accuracy between the light panel 2 and the backlight panel 1, and the second positioning bump 12 can be avoided through the avoidance hole 22; similarly, if it is necessary to install light panel B (such as a two-thousand-zone light panel 2), the limiting hole 21 on the light panel 2 is snap-connected to the first positioning bump 11, and the positioning hole 23 on the light panel 2 is snap-connected to the third positioning bump 13 to achieve the overall positioning of the light panel 2, avoiding the influence of processing errors on the installation accuracy between the light panel 2 and the backlight panel 1, and the second positioning bump 11 can be avoided through the avoidance hole 22. The positioning process of installing light panel C is the same as above. Therefore, through the above positioning structure, the same backlight panel 1 can be compatible with at least three types of partitioned light panels 2, realizing the differential derivation of products with different partitions and different grades, reducing the cost of mold change for model adjustment, improving the versatility of the backlight panel 1, and reducing the problem of obsolete materials of the backplane.

[0036] Optionally, the material of the backlight panel 1 can be a plastic material, such as polyimide, polycarbonate, polyethersulfone, polyethylene terephthalate, polyethylene, etc., to reduce the weight of the backlight module and the cost of the backlight module. The shape of the backlight panel 1 can be the same as the shape of the liquid crystal display panel using this backlight module. For example, when the shape of the liquid crystal display panel is circular, the shape of the backlight panel 1 of the backlight module used is also circular. The shape of the backlight panel 1 can vary with different embodiments.

[0037] Optionally, the cross-sectional shape of the first positioning bump 11 can be set to a circular shape, a square shape, a trapezoidal shape, etc., and the shape of the limiting hole 21 is adapted to the cross-sectional shape of the first positioning bump 11. After the limiting hole 21 is snap-connected to the first positioning bump 11, the movement of the positioning bump 11 in the X direction and the Y direction can be restricted simultaneously.

[0038] A plurality of light-emitting elements are arranged in an array on the light board 2. The light-emitting elements can be light-emitting diodes (LEDs) of conventional sizes, or any one of micro light-emitting diodes (Micro-LEDs) or sub-millimeter light-emitting diodes (Mini-LEDs). Micro-LED refers to an LED chip with a grain size of less than 100 micrometers, and Mini-LED refers to an LED chip with a grain size of about 100 to 300 micrometers. LEDs, Mini-LEDs, or Micro-LEDs can be used as self-luminous light-emitting elements for display, and have the advantages of low power consumption, high brightness, high resolution, high color saturation, fast response speed, long life, and high efficiency.

[0039] Optionally, the light-emitting elements are fabricated on the first substrate 21 by means of mass transfer. The method of mass transfer is not limited. For example, it includes but is not limited to methods such as wire bonding, flip chip bonding, and a combination of photolithography and pattern transfer. In addition, the term "micro light-emitting diode (Micro-LED)" or "sub-millimeter light-emitting diode (Mini-LED)" refers to the collective term for the entire light-emitting structure formed in each step of manufacturing the light-emitting elements, including all the layers or regions that have been formed.

[0040] In a preferred embodiment, the first positioning bump 11, the second positioning bump 12, and the third positioning bump 12 are set to be cylindrical and have the same diameter, and the limiting hole 21 is set to be circular, so as to facilitate the processing of the backlight board 1 and the light board 2, and at the same time facilitate the positioning of the two.

[0041] In some embodiments, the positioning hole 23 is an oval hole, has a first length in a first direction, and has a first width in a second direction. The first direction intersects the second direction. The first width of the positioning hole 23 is adapted to the diameter of the third positioning bump 13, and the first length of the positioning hole 23 is greater than the diameter of the third positioning bump 13. By the snap connection between the positioning hole 23 and the third positioning bump 13, the limitation of the third positioning bump 13 in the X direction can be achieved. Since the first length of the positioning hole 23 is greater than the diameter of the third positioning bump 13, the interference between the positioning hole 23 and the third positioning bump 13 caused by processing errors can also be avoided.

[0042] If the first length of the positioning hole 23 is too large, it will affect the structural strength of the lamp board 2. If the first length of the positioning hole 23 is too small, it may cause interference between the positioning hole 23 and the third positioning bump 13. Therefore, the first length of the positioning hole 23 is L, and the diameter of the limiting hole 21 is D, where 3D ≤ L ≤ 5D, so as to avoid interference between the positioning hole 23 and the third positioning bump 13 in the X direction while ensuring the structural strength.

[0043] Optionally, the avoidance hole 22 can be set in shapes such as circular, oval, square, trapezoidal, etc. When the lamp board 2 is connected to the backlight board 1, the avoidance hole 22 will not interfere with the second positioning bump 12.

[0044] In some embodiments, the avoidance hole 22 is set as a waist-shaped hole. The avoidance hole 22 has a second length in the first direction and a second width in the second direction. The second length of the avoidance hole 22 is greater than the diameter of the second positioning bump 12, and the second width of the avoidance hole 22 is greater than the diameter of the second positioning bump 12. Through the above settings, the avoidance hole 22 will not interfere with any of the second positioning bumps 12.

[0045] If the second width of the avoidance hole 22 is too large, it will affect the structural strength of the lamp board 2. If the second length of the avoidance hole 22 is too small, it may cause interference between the positioning hole 23 and the second positioning bump 12. Therefore, the second length of the avoidance hole 22 is W, and the diameter of the limiting hole 21 is D, where 1.2D ≤ W ≤ 1.4D, so as to avoid interference between the avoidance hole 22 and the positioning bump 11 in the Y direction while ensuring the structural strength.

[0046] Preferably, the avoidance hole 22 is located between the limiting hole 21 and the positioning hole 23.

[0047] In some embodiments, multiple avoidance holes 22 are provided. The multiple avoidance holes 22 are arranged at intervals in the first direction, and at least two avoidance holes 22 are respectively arranged on both sides of the limiting hole 21 or the positioning hole 23. When it is necessary to be compatible with more than three lamp board 2 schemes, complete positioning of more than three lamp boards 2 can be achieved by analogy according to the above principle.

[0048] The embodiment of the present application also provides a backlight module, including the backlight positioning structure as described above.

[0049] The embodiment of this backlight module includes all the technical solutions of all the above embodiments of the backlight positioning structure, and its working principle and the achieved technical effects are exactly the same, so they will not be elaborated here.

[0050] The embodiment of the present application also provides a display device, including: a display panel, and the backlight module as described above. The backlight module is arranged on the backlight side of the display panel and is used to provide light sources for the display panel.

[0051] The display panel includes an array substrate and a color filter substrate which are oppositely arranged, and a liquid crystal layer disposed between the array substrate and the color filter substrate. The liquid crystal layer includes a plurality of liquid crystal molecules, which are usually rod-shaped and can flow like a liquid while having certain crystal characteristics. When the liquid crystal molecules are in an electric field, their alignment directions will change according to the change of the electric field.

[0052] Since the display panel itself does not emit light, a backlight module needs to be provided to supply it with a light source with sufficient brightness and uniform distribution so that it can display images normally.

[0053] It can be understood that the technical solution of the backlight module provided by the embodiments of the present application can be widely used to supply light sources to various liquid crystal display panels, such as TN (Twisted Nematic) display panels, IPS (In-Plane Switching) display panels, VA (Vertical Alignment) display panels, and MVA (Multi-Domain Vertical Alignment) display panels.

[0054] It should be understood that the terms used in this specification are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprises", "comprising", "includes", and "having" are inclusive and thus specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless explicitly indicated as the order of performance. It should also be understood that additional or alternative steps may be used.

[0055] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as a second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0056] The above are only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A backlight positioning structure, characterized in that: include: A backlight panel (1) is provided with a first positioning convex point (11), a second positioning convex point (12) and a third positioning convex point (13), wherein the first positioning convex point (11), the second positioning convex point (12) and the third positioning convex point (13) are arranged at intervals along a first direction; and The lamp panel (2) is provided with a limiting hole (21), an avoidance hole (22) and a positioning hole (23); the limiting hole (21), the positioning hole (23) and the avoidance hole (22) are arranged at intervals along the first direction; the limiting hole (21) is connected to the first positioning protrusion (11) by snapping; the avoidance hole (22) is for the second positioning protrusion (12) to pass through; and the positioning hole (23) is connected to the third positioning protrusion (13) by snapping; The circumference of the limiting hole (21) is matched with the circumference of the first positioning protrusion (11), and the size of the avoidance hole (22) is larger than the size of the positioning hole (23).

2. The backlight positioning structure according to claim 1, characterized in that: The first positioning protrusion (11), the second positioning protrusion (12) and the third positioning protrusion (13) are arranged in a cylindrical shape and have the same diameter, and the limiting hole (21) is arranged in a circular shape.

3. The backlight positioning structure according to claim 2, characterized in that: The positioning hole (23) is a waist-shaped hole, the positioning hole (23) has a first length in the first direction, the positioning hole (23) has a first width in the second direction, the first direction intersects with the second direction, the first width of the positioning hole (23) is compatible with the diameter of the third positioning protrusion (13), and the first length of the positioning hole (23) is greater than the diameter of the third positioning protrusion (13).

4. The backlight positioning structure according to claim 3, characterized in that: The first length of the positioning hole (23) is L, the diameter of the limiting hole (21) is D, and 3D≤L≤5D.

5. The backlight positioning structure according to claim 2, characterized in that: The avoidance hole (22) is configured as a waist-shaped hole, the avoidance hole (22) has a second length in the first direction, the avoidance hole (22) has a second width in the second direction, the second length of the avoidance hole (22) is greater than the diameter of the second positioning protrusion (12), and the second width of the avoidance hole (22) is greater than the diameter of the second positioning protrusion (12).

6. The backlight positioning structure according to claim 5, characterized in that: The second width of the avoidance hole (22) is W, the diameter of the limiting hole (21) is D, and 1.2D≤W≤1.4D.

7. The backlight positioning structure according to claim 1, characterized in that: The avoidance hole (22) is located between the limiting hole (21) and the positioning hole (23).

8. The backlight positioning structure according to any one of claims 1 to 7, characterized in that: A plurality of the avoidance holes (22) are provided, and the plurality of avoidance holes (22) are arranged at intervals along the first direction, and at least two of the avoidance holes (22) are respectively arranged on both sides of the limiting hole (21) or the positioning hole (23).

9. A backlight module, characterized in that: It comprises the backlight positioning structure as described in any one of claims 1 to 8.

10. A display device, characterized in that: include: Display panel, and The backlight module as claimed in claim 9, wherein the backlight module is arranged on the backlight side of the display panel to provide a light source to the display panel.

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