Lateral backlight module and liquid crystal display device

Abstract

The utility model discloses a side-in type backlight module and a liquid crystal display device, and relates to the technical field of display devices.The side-in type backlight module comprises a back plate, a light bar and an optical film, the back plate comprises a back plate body and an installation section extending in the thickness direction of the back plate body, and the light bar is arranged on the installation section; the mounting section is provided with a connecting and fixing structure connected with the light bar, the connecting and fixing structure comprises a connecting block and an abutting part arranged on the connecting block, the connecting block is inserted into a matching hole of the light bar, and the abutting part abuts against the end, away from the mounting section, of the light bar, so that the light bar is mounted on the back plate. The lamp strip and the back plate are connected and fixed in a matched mode, the dislocation phenomenon is avoided, the probability of reworking and reworking is reduced, operation is convenient, disassembly is easy, and the extra manufacturing cost can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, and in particular to a side-lit backlight module and a liquid crystal display device. Background Art

[0002] Liquid crystal display (LCD) devices have many advantages such as thin body, power saving, and no radiation, and have been widely used. Most of the LCD devices currently on the market are backlight type LCD devices, which include a liquid crystal panel and a backlight module. The side-entry backlight module is a backlight LED light bar (Lightbar) arranged at the edge of the back panel behind the side of the liquid crystal panel. The light emitted by the LED light bar enters the light guide plate (LGP) from the light incident surface on one side of the light guide plate, and after reflection and diffusion, it is emitted from the light emitting surface of the light guide plate, and then passes through the optical film group to form a surface light source provided to the liquid crystal panel. With the rapid development of the liquid crystal display industry, the market requirements for backlight are getting higher and higher. As the brightness increases, the power of the light bar continues to increase, the temperature also continues to rise, and heat dissipation becomes a mainstream problem.

[0003] However, since the light strip needs to be fixed on the back panel, double-sided tape is usually used in existing technologies. However, when using double-sided tape, the light strip often becomes misaligned during assembly due to manual attachment, resulting in increased rework and inconvenience in loading and unloading, which easily leads to unnecessary costs. Utility Model Content

[0004] The main purpose of the utility model is to propose a light bar mounting structure and a liquid crystal display device, aiming to solve the existing problem that the light bar is easily misaligned when being fixed to the back panel using double-sided tape, resulting in increased rework and rework, and is inconvenient for loading and unloading, which easily causes unnecessary cost increases.

[0005] To achieve the above-mentioned purpose, the edge-entry backlight module proposed in the present invention includes a back panel, a light strip, and an optical film. The back panel includes a back panel body and an installation section extending along the thickness direction of the back panel body. The installation section is provided with a connecting and fixing structure connected to the light strip.

[0006] In one embodiment, the connecting and fixing structure includes a connecting block protruding from one side of the mounting section in the width direction of the back panel body, the light strip is provided with a mating hole on one side of the back panel body in the width direction, the connecting block is inserted into the mating hole, and at least partially protrudes from the side of the mating hole away from the mounting section.

[0007] In one embodiment, an abutment portion is provided on the connecting block, and the abutment portion is located at one end of the connecting block protruding from the matching hole. The abutment portion extends along the thickness direction of the back panel body and abuts against the end of the light bar away from the installation section.

[0008] In one embodiment, the mating hole includes a first hole segment and a second hole segment spaced apart in the longitudinal direction of the back plate body, the first hole segment communicates with the second hole segment, and the hole wall of the first hole segment in the thickness direction of the back plate body is through-set;

[0009] The connecting block can extend into the first hole section and can move into the second hole section so that the abutting portion abuts against an end of the light bar away from the mounting section.

[0010] In one embodiment, the mounting section is provided with positioning sections at both ends of the back panel body in the length direction, each positioning section extends along the width direction of the back panel body, and at least one positioning section abuts against the light bar.

[0011] In one embodiment, a limiting section is provided at the end of one of the positioning sections in the width direction of the back panel body, the limiting section extends along the length direction of the back panel body, and the limiting section abuts against the end of the light bar away from the installation section.

[0012] In one embodiment, the edge-entry backlight module further includes a positioning structure, which includes a positioning portion and a mating portion. One of the positioning portion and the mating portion is provided on the mounting section, and the other is provided on the light strip. The positioning portion and the mating portion are detachably connected to limit the movement of the light strip in the length direction of the back panel body.

[0013] In one embodiment, the positioning portion includes a positioning protrusion, and the positioning protrusion is protruding from one end of the mounting section facing the light bar;

[0014] The matching portion includes a matching groove, and the matching groove is provided at one end of the light bar facing the mounting section;

[0015] The positioning protrusion can extend into the matching groove and abut against the side wall of the matching groove.

[0016] In one embodiment, the light bar is made of a flexible material.

[0017] The present invention further provides a liquid crystal display device, which includes the above-mentioned edge-lit backlight module.

[0018] In the technical solution of the present invention, when the light bar needs to be fixed, the connecting and fixing structure provided on the mounting section can be connected to the light bar to fix the light bar to the back panel; when the light bar needs to be removed, the connecting and fixing structure releases the connection with the light bar, so that the light bar can be removed. With such a configuration, the light bar will not be misaligned with the back panel, the probability of rework and reworking is reduced, and the operation is convenient and disassembly is easy, which can reduce additional manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This is a structural diagram of an embodiment of an edge-lit backlight module provided by the present invention;

[0021] Figure 2 for Figure 1 A partial cross-sectional diagram of an edge-lit backlight module;

[0022] Figure 3 for Figure 1 Schematic diagram of the structure of the back panel and light bar;

[0023] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0024] Figure 5 for Figure 3 Schematic diagram of the structure of the backplane;

[0025] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0026] Figure 7 for Figure 5 A partial enlarged view of point C in the middle;

[0027] Figure 8 for Figure 3 Schematic diagram of the structure of the middle light bar;

[0028] Figure 9 for Figure 8 A partial enlarged view of point D in the middle.

[0029] Description of Figure Numbers:

[0030] 100. Edge-entry backlight module; 1. Back panel; 11. Back panel body; 12. Mounting section; 13. Positioning section; 14. Limiting section; 2. Light bar; 21. Matching hole; 211. First hole section; 212. Second hole section; 3. Optical diaphragm; 31. Diaphragm; 32. Light guide plate; 33. Reflective paper; 4. Connecting and fixing structure; 41. Connecting block; 42. Abutting portion; 5. Positioning structure; 51. Positioning portion; 511. Positioning protrusion; 52. Matching portion; 521. Matching groove.

[0031] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0035] The utility model provides a side-entry backlight module, which aims to solve the existing problem of light strip misalignment when using double-sided tape to fix the light strip on the back panel, resulting in increased rework and rework, inconvenience in assembly and disassembly, and unnecessary costs.

[0036] See also Figures 1 to 3 In one embodiment of the present invention, the edge-entry backlight module 100 includes a back panel 1, a light strip 2, and an optical film 3. The back panel 1 includes a back panel body 11 and a mounting section 12 extending along the thickness direction of the back panel body 11. The mounting section 12 is provided with a connecting and fixing structure 4 connected to the light strip 2.

[0037] In the technical solution of the present invention, when the light bar 2 needs to be fixed, the connecting and fixing structure 4 provided on the mounting section 12 can be connected to the light bar 2 to fix the light bar 2 to the back panel 1; when the light bar 2 needs to be removed, the connecting and fixing structure 4 is released from the connection with the light bar 2, so that the light bar 2 can be removed. With such a configuration, the light bar 2 will not be misaligned with the back panel 1, the probability of rework and rework is reduced, and the operation is convenient and disassembly is easy, which can reduce additional manufacturing costs.

[0038] In the present invention, the optical film 3 includes a film 31 , a light guide plate 32 , and a reflective paper 33 stacked along the thickness direction of the back panel body 11 . The reflective paper 33 is disposed in contact with the back panel body 11 .

[0039] It should be noted that the present invention does not limit the specific form of the connecting and fixing structure 4. Figures 5 to 7 In one embodiment of the present invention, the connecting and fixing structure 4 includes a connecting block 41 protruding from one side of the mounting section 12 in the width direction of the back panel body 11, and the connecting block 41 is inserted into the matching hole 21 of the light bar 2, and at least partially protrudes from the side of the matching hole 21 away from the mounting section 12.

[0040] It can be understood that in this embodiment, in order to ensure the stability of the connection between the back panel 1 and the light bar 2, the connecting block 41 can be set to be interference fit with the matching hole 21 of the light bar 2. With this setting, when the connecting block 41 is inserted into the matching hole 21 of the light bar 2, the connecting block 41 can abut against the hole wall of the matching hole 21 to limit the relative position of the connecting block 41 and the matching hole 21, thereby limiting the relative position of the back panel 1 and the light bar 2, and ensuring the connection stability of the back panel 1 and the light bar 2; and when the light bar 2 needs to be removed, the connecting block 41 can be pulled out of the matching hole 21, thereby completing the disassembly of the light bar 2.

[0041] By making the connection block 41 at least partially protrude from the side of the matching hole 21 away from the installation section 12 , the connection strength between the connection block 41 and the matching hole 21 can be further improved.

[0042] Specifically, in a further embodiment, the connecting block 41 is provided at the end of the mounting section 12 facing the light bar 2 to ensure proper fit between the connecting block 41 and the mating hole 21. Furthermore, to ensure that the light bar 2 can be properly reinstalled on the back panel 1 after removal, at least one of the connecting block 41 and the mating hole 21 is constructed of an elastic material.

[0043] In another embodiment of the present invention, the connecting and fixing structure 4 can also be set as a threaded connector, which can extend into the threaded hole of the light bar 2 and be threadedly connected to the threaded hole. Such a setting can also ensure the connection strength between the back panel 1 and the light bar 2, and when the light bar 2 needs to be removed, the threaded connection between the threaded connector and the threaded hole can be released, which is convenient and quick.

[0044] Of course, in order to further ensure the connection strength between the threaded connector and the threaded hole, in a further embodiment, the threaded connector also at least partially protrudes from the side of the threaded hole away from the mounting section 12, and the connecting and fixing structure 4 also includes a locking nut, which is threadedly connected to the part of the threaded connector protruding from the threaded hole, thereby further improving the connection stability between the back panel 1 and the light strip 2.

[0045] Of course, in other embodiments of the present invention, the light strip 2 may also be provided with a groove on one side of the back panel body 11 in the width direction, and the connection regulation structure includes a protrusion protruding from the side of the mounting section 12 in the width direction of the back panel body 11. At this time, the protrusion can extend into the groove and does not need to protrude from the side of the mating hole 21 away from the mounting section 12.

[0046] In another embodiment of the present invention, an abutment portion 42 is provided on the connecting block 41. The abutment portion 42 is located at one end of the connecting block protruding from the matching hole 21. The abutment portion 42 extends along the thickness direction of the back panel body 11 and abuts against the end of the light bar 2 away from the mounting section 12. In this configuration, the abutment portion 42 abuts against the end of the light bar 2 away from the mounting section 12 to restrict the light bar 2 from moving in a direction away from the mounting section 12. The mounting section 12 abuts against the end of the light bar 2 toward the mounting section 12 to restrict the light bar 2 from moving in a direction toward the mounting section 12. In this way, the stability of the connection between the back panel 1 and the light bar 2 is ensured by the joint restriction of the mounting section 12 and the abutment portion 42.

[0047] It can be understood that, at this time, the connecting block 41 and the abutting portion 42 together form a hook, and the hook can extend into the matching hole 21 to engage with the matching hole 21, thereby completing the connection between the back panel 1 and the light bar 2.

[0048] At the same time, when the mounting section 12 abuts against the light bar 2, since the mounting section 12 is in direct contact with the light bar 2, the heat emitted by the light bar 2 during operation can be directly transferred to the mounting section 12, and then transferred to the back plate 1, reducing the heat transfer medium and enhancing the heat dissipation effect of the light bar 2. Moreover, since the additional heat dissipation structure is eliminated, the cost can be further reduced.

[0049] It should also be noted that the present invention does not limit the specific number of the connecting block 41 and the abutting portion 42. In one embodiment of the present invention, only one connecting block 41 and one abutting portion 42 may be provided. In another embodiment of the present invention, multiple connecting blocks 41 and multiple abutting portions 42 may be provided, with multiple abutting portions 42 spaced apart along the length of the back panel body 11 on the mounting section 12. Specifically, the specific number of the connecting blocks 41 and the abutting portions 42 can be selected based on the length of the light bar 2.

[0050] Of course, the number of the matching holes 21 of the light bar 2 should correspond to the number of the connecting blocks 41 and the abutting portions 42 .

[0051] Moreover, when there are multiple connecting blocks 41 and abutting portions 42, the present invention does not limit the specific arrangement of the multiple connecting blocks 41. For example, in one embodiment of the present invention, the multiple connecting blocks 41 are spaced apart in the mounting section 12 along the length direction of the back panel body 11.

[0052] In another embodiment of the present invention, among the multiple connecting blocks 41 and the abutting portions 42, some of the connecting blocks 41 and the corresponding abutting portions 42 form a first connecting group, and the remaining connecting blocks 41 and the corresponding abutting portions 42 form a second connecting group. The first connecting group and the second connecting group are spaced apart in the thickness direction of the back panel body 11, and the multiple connecting blocks 41 in each connecting group are spaced apart along the length direction of the back panel body 11. In this embodiment, in the first connection group and the second connection group, the multiple connection blocks 41 and the corresponding abutment portions 42 in one connection group are all connected to the portion of the light bar 2 on one side in the thickness direction of the back panel main body 11, and the multiple connection blocks 41 and the corresponding abutment portions 42 in the other connection group are all connected to the portion of the light bar 2 on the other side in the thickness direction of the back panel main body 11, so as to jointly limit the two ends of the light bar 2 in the thickness direction of the back panel main body 11, prevent the light bar 2 from flipping over in the thickness direction of the back panel main body 11, so as to further improve the connection stability between the back panel 1 and the light bar 2, and prevent the light bar 2 from being offset, thereby causing poor performance.

[0053] Of course, see Figures 8 and 9 In a further embodiment of the present invention, in order to ensure that the connecting block 41 can extend into the matching hole 21 to avoid interference between the matching hole 21 and the abutment portion 42, the matching hole 21 includes a first hole segment 211 and a second hole segment 212 spaced apart in the length direction of the back plate body 11, the first hole segment 211 is connected to the second hole segment 212, and the hole wall of the first hole segment 211 in the thickness direction of the back plate body 11 is through-set. In this way, during the installation of the light bar 2, the connecting block 41 first extends into the first hole segment 211. Since the first hole segment 211 is in the The hole wall in the thickness direction of the back panel body 11 is set to be through, so that the part of the first hole section 211 that is set to be through can form a notch, and the abutment portion 42 can pass through the part of the first hole section 211 that is set to be through (i.e., the notch) to move to the side of the light strip 2 away from the mounting section 12, and then, the connecting block 41 can move from the first hole section 211 to the second hole section 212. At this time, the abutment portion 42 can abut the end of the light strip 2 away from the mounting section 12 to limit the movement of the light strip 2 in the width direction of the back panel body 11, thereby ensuring the connection stability of the light strip 2 and the back panel 1.

[0054] When the light strip 2 needs to be removed, the connecting block 41 moves from the second hole section 212 to the first hole section 211. At this time, the abutting portion 42 no longer abuts the end of the light strip 2 away from the mounting section 12, and the connecting block can be pulled out from the through-set portion of the first hole section 211, thereby completing the disassembly of the light strip 2.

[0055] In addition, after the connecting block 41 moves into the second hole section 212, in order to prevent the connecting block 41 from moving into the first hole section 211 when the light bar 2 does not need to be removed, please refer to Figure 4 In the present invention, the stability of the connection between the light bar 2 and the back panel 1 can be further improved. In one embodiment of the present invention, the side-entry optical module further includes a positioning structure 5, which includes a positioning portion 51 and a matching portion 52. One of the positioning portion 51 and the matching portion 52 is provided on the mounting section 12, and the other is provided on the light bar 2. The positioning portion 51 and the matching portion 52 limit the movement of the light bar 2 in the length direction of the back panel body 11. The provision of the positioning structure 5 can directly limit the movement of the light bar 2 in the length direction of the back panel body 11, thereby further improving the stability of the connection between the light bar 2 and the back panel 1.

[0056] It can be understood that the present invention does not limit the specific structural forms of the positioning portion 51 and the matching portion 52. In one embodiment of the present invention, the positioning portion 51 can be set as a positioning protrusion 511, and the matching portion 52 can be set as a matching groove 521. In this way, the positioning protrusion 511 can extend into the matching groove 521 and abut against the side wall of the matching groove 521, thereby achieving the purpose of limiting the movement of the light strip 2.

[0057] In another embodiment of the present invention, the positioning portion 51 can also be set as a positioning pin, and the positioning pin is movably set along the thickness direction of the back panel body 11. The matching portion 52 can also be set as the abutting end of the light strip 2 in the length direction of the back panel body 11. With this arrangement, the positioning pin can be movable along the thickness direction of the back panel body 11 until the side of the positioning pin abuts the abutting end, thereby also achieving the purpose of limiting the movement of the light strip 2.

[0058] In other embodiments of the present invention, the positioning structure 5 can also be set to other structural forms. It only needs to ensure that the positioning structure 5 can limit the movement of the light strip 2 in the length direction of the back panel body 11. During actual setting, it can be selected according to needs.

[0059] Specifically, in this embodiment, the positioning portion 51 includes a positioning protrusion 511, the mating portion 52 includes a mating groove 521, and the positioning protrusion 511 is provided at one end of the mounting section 12 facing the light bar 2, and the mating groove 521 is provided at one end of the light bar 2 facing the mounting section 12.

[0060] In addition, during the assembly and disassembly process of the light bar 2, in order to ensure that the relative position of the light bar 2 and the back plate 1 is accurate when the light bar 2 is installed on the back plate 1, and to avoid the light bar 2 being installed in a wrong position, which may lead to further rework and rework, please refer to Figures 6 and 7 In one embodiment of the present invention, the mounting section 12 is provided with positioning sections 13 at both ends of the back panel body 11 in the longitudinal direction. Each positioning section 13 extends along the width direction of the back panel body 11, and at least one positioning section 13 abuts against the light bar 2. The provision of the positioning sections 13 enables one end of the light bar 2 in the longitudinal direction of the back panel body 11 to abut against the corresponding positioning section 13 when the light bar 2 is mounted on the back panel 1. The positioning sections 13 provide a mounting reference for the light bar 2, thereby improving the accuracy of the light bar 2 being mounted on the back panel 1.

[0061] Of course, the present invention is not limited to which of the two positioning sections 13 serves as the specific installation reference for the light bar 2. During the actual installation process, it is sufficient to make one end of the light bar 2 in the length direction of the back panel body 11 abut against one of the positioning sections 13. When the light bar 2 is completely installed on the back panel 1, the other positioning section 13 can be set to provide a positioning reference for the light bar 2. That is, when the other end of the light bar 2 in the length direction of the back panel body 11 abuts against the other positioning section 13, it is determined that the light bar 2 is installed and the installation position is accurate.

[0062] Since the two positioning sections 13 only abut the ends of the light strip 2 in the length direction of the back panel body 11, after the light strip 2 is installed, in order to prevent any end of the light strip 2 in the length direction of the back panel body 11 from moving in the direction away from the installation section 12, thereby affecting the installation effect of the light strip 2, in one embodiment of the present utility model, one of the positioning sections 13 is provided with a limiting section 14 at the end in the width direction of the back panel body 11, and the limiting section 14 extends along the length direction of the back panel body 11, and the limiting section 14 is aligned with the The light strip 2 abuts against one end away from the mounting section 12. With this arrangement, the limiting section 14 can further abut against the end of the light strip 2 away from the mounting section 12, and since the limiting section 14 is provided on one of the positioning sections 13, and the positioning section 13 is provided on one side of the light strip 2 in the length direction of the back panel body 11, the limiting section 14 can limit the movement of the end of the light strip 2 in the length direction of the back panel body 11 in the width direction away from the back panel body 11, thereby improving the connection stability between the back panel 1 and the light strip 2.

[0063] Of course, in another embodiment of the present invention, the other positioning segment 13 may also be provided with the limiting segment 14 at the end portion in the width direction of the back panel body 11, thereby further limiting the movement of the other end of the light strip 2 in the length direction of the back panel body 11 away from the width direction of the back panel body 11, so as to further improve the connection stability between the back panel 1 and the light strip 2.

[0064] It is understandable that when the connecting block 41 extends into the first hole section 211, the positioning protrusion 511 does not extend into the mating groove 521. At this time, the positioning protrusion 511 abuts the end of the light bar 2 facing the mounting section 12. To avoid interference between the positioning protrusion 511 and the light bar 2, in the present invention, the material of the light bar 2 includes a flexible material. In this configuration, when the positioning protrusion 511 abuts the light bar 2, the light bar 2 can deform, thereby avoiding interference between the positioning protrusion 511 and the light bar 2.

[0065] The present invention also proposes a liquid crystal display device, which includes an edge-entry backlight module 100. The specific structure of the edge-entry backlight module 100 refers to the above embodiment. Since the present liquid crystal display device adopts all the technical solutions of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be described one by one here.

[0066] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A side-lit backlight module, comprising a back panel, a light bar, and an optical film, characterized in that: The back plate includes a back plate body and a mounting section extending along the thickness direction of the back plate body. The mounting section is provided with a connecting and fixing structure connected to the light bar.

2. The edge-lit backlight module according to claim 1, wherein: The connecting and fixing structure includes a connecting block protruding from one side of the mounting section in the width direction of the back panel body, and the light strip is provided with a matching hole on one side of the back panel body in the width direction. The connecting block is inserted into the matching hole and at least partially protrudes from the side of the matching hole away from the mounting section.

3. The edge-lit backlight module according to claim 2, wherein: The connecting block is provided with an abutting portion, which is located at one end of the connecting block protruding from the matching hole. The abutting portion extends along the thickness direction of the back plate body and abuts against one end of the light bar away from the mounting section.

4. The edge-lit backlight module according to claim 3, wherein: The matching hole includes a first hole segment and a second hole segment spaced apart in the longitudinal direction of the back plate body, the first hole segment is connected to the second hole segment, and the hole wall of the first hole segment in the thickness direction of the back plate body is through-set; The connecting block can extend into the first hole section and can move into the second hole section so that the abutting portion abuts against an end of the light bar away from the mounting section.

5. The edge-lit backlight module according to claim 1, wherein: The mounting section is provided with positioning sections at both ends of the back plate body in the length direction. Each positioning section extends along the width direction of the back plate body, and at least one positioning section abuts against the light bar.

6. The edge-lit backlight module according to claim 5, wherein: One of the positioning sections is provided with a limiting section at an end portion in the width direction of the back panel body. The limiting section extends along the length direction of the back panel body, and the limiting section abuts against an end of the light bar away from the mounting section.

7. The edge-lit backlight module according to claim 1, wherein: The edge-entry backlight module also includes a positioning structure, which includes a positioning part and a matching part. One of the positioning part and the matching part is arranged on the installation section, and the other is arranged on the light strip. The positioning part and the matching part are detachably connected to limit the movement of the light strip in the length direction of the back panel body.

8. The edge-lit backlight module according to claim 7, wherein: The positioning portion includes a positioning protrusion, and the positioning protrusion is protruding from one end of the mounting section facing the light bar; The matching portion includes a matching groove, and the matching groove is provided at one end of the light bar facing the mounting section; The positioning protrusion can extend into the matching groove and abut against the side wall of the matching groove.

9. The edge-lit backlight module according to claim 1, wherein: The light bar is made of a flexible material.

10. A liquid crystal display device, characterized in that: The liquid crystal display device includes the edge-type backlight module according to any one of claims 1 to 9.

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