Backlight jig

Abstract

The utility model discloses a backlight jig. The backlight jig comprises a bottom plate, a supporting frame, a fixing frame and a fixing assembly. The supporting frame is arranged on the bottom plate, the surface of one side, far away from the bottom plate, of the supporting frame is used for placing a to-be-tested panel, the supporting frame comprises a plurality of supporting side plates which are arranged in a surrounding manner, and a mounting hole is formed in the outer wall of each supporting side plate; the fixing frame is annularly arranged on the periphery of the supporting frame and comprises a fixing side plate and a top plate which are connected with each other, the fixing side plate is parallel to the supporting side plate on the corresponding side, and the top plate is located above the panel to be tested; the fixing assembly comprises a plurality of magnetic parts, each magnetic part is correspondingly arranged in one mounting hole, and the supporting side plate and the fixing side plate are connected through the magnetic parts in a magnetic attraction mode so that the fixing side plate and the supporting side plate can be relatively fixed.

Description

Technical Field

[0001] The present application relates to the technical field of display testing, and in particular to a backlight fixture. Background Art

[0002] The display backlight fixture is a fixture used for optical testing of display screens. It is mainly composed of a middle frame, a back plate, an optical film, and a light source. In the current backlight fixture, when testing the display screen, after the display screen is set on the middle frame, a front shell needs to be set outside the middle frame to further fix the display screen; usually, the front shell is screwed and fixed to the middle frame. Since the test samples need to be frequently replaced during the test, the fixture needs to be disassembled and replaced simultaneously. During the assembly process of the fixture, the large number of locking screws will make the disassembly and assembly of the support frame and the front shell complicated; and frequent disassembly and assembly will cause the threads in the threaded holes on the support frame to be easily damaged, thereby causing the backlight fixture to be scrapped. Utility Model Content

[0003] The embodiment of the present application provides a backlight fixture, which is easy to assemble and disassemble and has a long service life.

[0004] The embodiment of the present application provides a backlight fixture, which provides backlight for a panel to be tested, including:

[0005] Base plate;

[0006] A support frame, the support frame is arranged on the bottom plate, and a surface of the support frame on one side away from the bottom plate is used for placing the panel to be tested, the support frame includes a plurality of support side plates arranged in an enclosed manner, and an installation hole is arranged on the outer wall of each of the support side plates;

[0007] A fixed frame, the fixed frame is arranged around the periphery of the supporting frame, the fixed frame includes a fixed side plate and a top plate connected to each other, the fixed side plate is arranged in parallel with the supporting side plate on the corresponding side, and the top plate is located above the panel to be tested; and

[0008] The fixing assembly comprises a plurality of magnetic parts, each of which is arranged in a corresponding mounting hole, and the supporting side plate is magnetically connected to the fixing side plate through the magnetic parts so that the fixing side plate is relatively fixed to the supporting side plate.

[0009] In one embodiment, the plurality of supporting side plates include a first side plate, at least an end surface of the magnetic member located on the first side plate is arranged beyond the periphery of the corresponding mounting hole, and a gap is formed between the first side plate and the corresponding fixed side plate;

[0010] Wherein, the chip-on-chip film of the panel to be tested is placed in the gap.

[0011] In one embodiment, an escape groove is provided on the outer wall of the first side plate, and the escape groove is provided through a groove wall on a side away from the bottom plate;

[0012] Wherein, the chip-on-film of the panel to be tested is inserted into the avoidance groove.

[0013] In one embodiment, the shape of the avoidance groove is adapted to the shape of the chip-on-film.

[0014] In one embodiment, a silicone pad is provided on the groove wall of the avoidance groove; and / or,

[0015] An adhesive layer is arranged on the bottom wall of the avoidance groove for adhering and fixing the chip-on-film.

[0016] In one embodiment, the backlight fixture also includes a positioning structure, which includes a plug-in positioning column and a positioning hole, the positioning column is arranged on one of the supporting side plate and the fixed side plate, and the positioning hole is correspondingly arranged on the other of the supporting side plate and the fixed side plate.

[0017] In one embodiment, the positioning column has a first end portion away from the supporting side plate, the positioning column is formed with a threaded section at a position close to the first end portion, and the first end portion is passed through the positioning hole so that the threaded section is exposed;

[0018] The fixing assembly also includes a fastening nut, which is arranged on a side of the fixing side plate away from the supporting side plate and is threadedly connected to the threaded section of the positioning column.

[0019] In one embodiment, the magnetic member is fixed in the mounting hole by adhesive; and / or,

[0020] The magnetic component is detachably mounted in the mounting hole via a threaded connection structure.

[0021] In one embodiment, the magnetic member is fixed in the mounting hole by adhesive, and a threaded hole is provided at the center of the magnetic member, and the fixing frame is connected to the threaded hole by screws.

[0022] In one embodiment, the plurality of supporting side plates of the supporting frame correspond one-to-one to the plurality of side portions of the bottom plate, and together with the bottom plate, form a receiving cavity;

[0023] The backlight fixture also includes a backlight source, a reflective sheet and an optical film group, wherein the reflective sheet is located in the accommodating cavity and is arranged on the bottom plate, the backlight source is located in the accommodating cavity and is arranged on the reflective sheet, the optical film group is located in the accommodating cavity and is arranged parallel to the reflective sheet, and the optical film group is arranged on the light output side of the backlight source.

[0024] Beneficial effect: In the backlight fixture provided by the present application, a side surface of the support frame away from the bottom plate is used for placing the panel to be tested; the support frame is surrounded by a plurality of support side panels, and a mounting hole is provided on the outer wall of the support side panel, and a magnetic member is arranged in the mounting hole; a fixing frame is arranged on the outside of the support frame, and the fixing side panels of the fixing frame are magnetically matched with the corresponding magnetic members so that the fixing side panels and the corresponding supporting side panels are relatively fixed, and the top plate of the fixing frame is located above the panel to be tested; that is, in the actual assembly process, it is only necessary to magnetically fix each of the panels to the corresponding supporting side panels to realize the assembly and fixation of the fixing frame and the support frame; this can replace the screw locking in the prior art, not only can it simplify the assembly process of the fixing frame and the support frame, but also make the fixing frame easy to disassemble and assemble; and the magnetic fixing method will not cause damage to the support frame and the fixing frame even if the disassembly and assembly are frequent, thereby extending the service life of the backlight fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The technical solution and other beneficial effects of the present application will be made apparent by describing in detail the specific implementation methods of the present application in conjunction with the accompanying drawings.

[0026] Figure 1 A schematic diagram of the structure of a backlight fixture (without a fixing frame installed) provided in an embodiment of the present application;

[0027] Figure 2 for Figure 1 An enlarged schematic diagram of a local A in FIG.

[0028] Figure 3 A schematic diagram of the structure of a backlight fixture (installation fixing frame) provided in an embodiment of the present application;

[0029] Figure 4 for Figure 3 Schematic diagram of the backlight fixture in the figure;

[0030] Figure 5 for Figure 3 Cross-sectional view along BB in .

[0031] 100 backlight fixture; 1 bottom plate; 2 support frame; 21 support side plate; 21a first side plate; 211 mounting hole; 212 avoidance groove; 22 double-sided foam glue; 3 fixing frame; 31 plate; 311 fixed side plate; 312 top plate; 4 fixing assembly; 41 magnetic member; 5 positioning structure; 51 positioning column; 511 first end; 52 positioning hole; 53 fastening nut; 6 accommodating cavity; 7 backlight source; 8 reflective sheet; 9 optical film group; a gap; 200 panel to be tested; 201 chip-on-film; DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and cannot be understood as limiting the present application. In addition, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature merely means that the first feature is higher in level than the second feature or that the first feature is lower in level than the second feature, and does not indicate a direct connection relationship.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only, and the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect" and "connect" should be understood in a broad sense without specifically limiting the connection method. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0036] The disclosure below provides many different embodiments to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the various specific processes and material examples provided by the present application, but those of ordinary skill in the art can appreciate the application of other processes and / or the use of other materials.

[0037] The embodiment of the present application provides a backlight fixture 100. Figures 1 to 3The backlight fixture 100 includes a bottom plate 1, a support frame 2, a fixed frame 3 and a fixed component 4; the support frame 2 is arranged on the bottom plate 1, and its side surface away from the bottom plate 1 is used for the panel to be tested 200 to be placed, the support frame 2 includes a plurality of support side plates 21 arranged in an enclosed manner, and each of the outer walls of the support side plates 21 is provided with a mounting hole 211; the fixed frame 3 is arranged around the periphery of the support frame 2, the fixed frame 3 includes a fixed side plate 311 and a top plate 312 connected to each other, the fixed side plate 311 is arranged parallel to the support side plate 21 on the corresponding side, and the top plate 312 is located above the panel to be tested 200; the fixed component 4 includes a plurality of magnetic members 41, each of the magnetic members 41 is correspondingly arranged in one of the mounting holes 211, the support side plate 21 and the fixed side plate 311 are magnetically connected through the magnetic member 41, so that the fixed side plate 311 and the support side plate 21 are relatively fixed.

[0038] In the backlight fixture 100 provided in the present application, a support frame 2 is arranged on the base plate 1, and a side surface of the support frame 2 away from the base plate 1 is used for placing the panel 200 to be tested; a mounting hole 211 is provided on the outer wall of the support side plate 21, and a magnetic member 41 is arranged in the mounting hole 211; a fixing frame 3 is arranged outside the support frame 2, and a fixing side plate 311 of the fixing frame 3 is magnetically matched with the corresponding magnetic member 41, so that the fixing side plate 311 is relatively fixed to the corresponding support side plate 21, and the top plate 312 of the fixing frame 3 is located at the above the panel 200 to be tested; that is to say, in the actual assembly process, it is only necessary to magnetically fix each of the plates 31 to the corresponding supporting side plates 21 to realize the assembly and fixation of the fixing frame 3 and the supporting frame 2; this can replace the screw locking in the prior art, which can not only simplify the assembly process of the fixing frame 3 and the supporting frame 2, but also make the fixing frame 3 easy to disassemble and assemble; and the magnetic fixing method will not cause damage to the supporting frame 2 and the fixing frame 3 even if they are frequently disassembled and assembled, thereby extending the service life of the backlight fixture 100.

[0039] It should be noted that the present application does not impose any specific restrictions on the connection method between the support frame 2 and the bottom plate 1. In some embodiments, the support frame 2 can be fixedly connected to the bottom plate 1; in other embodiments, the support frame 2 can also be detachably connected to the bottom plate 1, and by changing the specifications of the support frame 2 on the bottom plate 1, the panels 200 to be tested of different sizes can be fixed.

[0040] Meanwhile, in one embodiment, the fixed side plate of the support frame 2 is fixed to the base plate 1 by screws; in another embodiment, an annular groove is provided on the base plate 1, and the fixed side plate of the support frame 2 is directly inserted into the annular groove.

[0041] It should be noted that the present application does not impose any specific restrictions on the connection method between the multiple support side panels 21. In some embodiments, two adjacent support side panels 21 formed by enclosing the multiple support side panels 21 can be fixedly connected; in another embodiment, two adjacent support side panels 21 formed by enclosing the multiple support side panels 21 can be detachably connected. In this way, the support frame 2 can not only change its shape according to the specific usage scenario and the type of the panel 200 to be tested, but also make the backlight fixture 100 have higher applicability.

[0042] At the same time, two adjacent support side plates 21 are also locked by a threaded connection structure. For example, a countersunk hole is set on the surface of one of the support side plates 21, and a threaded hole is set at the end of the adjacent support side plate 21. The locking bolt is passed through the countersunk hole and threadedly locked in the threaded hole. Similarly, multiple support side plates 21 can be installed one by one.

[0043] It is understandable that in the prior art, the aluminum profile is cut into segments, and then multiple segments of the aluminum profile are assembled to form a support frame. Aluminum profile is an alloy material with aluminum as the main component. Aluminum rods are hot-melted and extruded to obtain aluminum materials with different cross-sectional shapes. The support frame spliced ​​by aluminum profiles not only occupies a large space, but also has a heavy weight. By replacing the aluminum profile with a thinner and lighter aluminum plate, not only the occupied space is reduced, but also the weight of the support frame can be reduced, making it easier for operators to assemble.

[0044] Moreover, in the actual test process, the support frame 2 of different specifications can be manufactured according to the size of the commonly used panel 200 to be tested; by replacing the support frame 2 on the base plate 1, the panels 200 to be tested of different sizes can be fixed. Similarly, since in the prior art, the support frame 2 is assembled by aluminum profiles, but the size of the aluminum profiles is certain, the application scope of the backlight fixture 100 has certain limitations. In the present application, the support frame 2 is spliced ​​by the support side panels 21, and different OD (vertical distance from the reflector 8 on the base plate 1 to the optical film group 9) schemes can be achieved by setting the height of the support side panels 21, thereby further improving the applicability of the backlight fixture 100.

[0045] The present application does not impose any specific restrictions on the structure of the fixing frame 3. Figure 3The fixed frame 3 includes a plurality of panels 31 that are enclosed and arranged, each of the panels 31 is arranged corresponding to one of the supporting side panels 21, each of the panels 31 includes a sub-fixed side panel and a sub-top panel that are connected to each other, the sub-fixed side panel is arranged in parallel with the supporting side panel 21 on the corresponding side, the sub-top panel and the supporting side panel 21 are perpendicular to each other and are located above the panel to be tested 200; a plurality of the sub-fixed side panels are enclosed to form the fixed side panel 311, and a plurality of the sub-top panels are enclosed to form the top panel 312.

[0046] When the panel to be tested 200 is mounted on the support frame 2 , a surface of the support frame 2 on one side away from the bottom plate 1 is adhered and fixed to the panel to be tested 200 by double-sided foam adhesive 22 .

[0047] Furthermore, after the panel 200 to be tested is installed on the support frame 2, the chip-on-film 201 of the panel 200 to be tested naturally droops to the outside of the support frame 2. Generally, in order to avoid crushing the chip-on-film 201 when the fixing frame 3 is locked to the support frame 2, a gasket is usually pasted on the inside of the fixing frame 3; however, in actual operation, frequent disassembly and assembly of the fixing frame 3 will make the gasket very easy to lose, thereby increasing the risk of damage to the chip-on-film 201. To solve this problem, in one embodiment of the present application, please refer to Figure 4 and Figure 5 The plurality of supporting side panels 21 include a first side panel 21a, and at least the magnetic member 41 located on the first side panel 21a is arranged beyond the periphery of the corresponding mounting hole 211, so that a gap a is formed between the first side panel 21a and the corresponding fixed side panel 311 to accommodate the chip-on-film 201 of the panel 200 to be tested.

[0048] It can be seen from the above content that the fixed frame 3 is fixed to the support frame 2 through the magnetic member 41. In the present embodiment, it is only necessary to make the magnetic member 41 on the first side panel 21a thicker so that the end face of the magnetic member 41 exceeds the periphery of the mounting hole 211. When the plate member 31 and the magnetic member 41 on the first side panel 21a are magnetically engaged, there is a gap a between the plate member 31 and the first side panel 21a, thereby avoiding squeezing the chip-on-film 201 when the plate member 31 and the first side panel 21a are fixed.

[0049] As mentioned above, only making the magnetic parts 41 on the supporting side plate 21 on one side thicker will make the overall assembly of the fixing frame 3 uncoordinated; therefore, in actual operation, all the magnetic parts 41 will be made thicker so that all the magnetic parts 41 extend beyond the peripheral setting of the corresponding mounting hole 211, thereby improving the overall aesthetics of the backlight fixture 100 after assembly.

[0050] Please read further Figure 3 In one embodiment, an avoidance groove 212 is provided on the outer wall of the first side plate 21a, and the avoidance groove 212 is provided through the groove wall on the side away from the bottom plate 1 for the chip-on-cover film 201 to be inserted; by providing the avoidance groove 212, the gap between the first side plate 21a and the plate 31 can be further increased, thereby providing a larger accommodating space for the chip-on-cover film 201.

[0051] The present application does not impose any specific restrictions on the shape of the avoidance groove 212. The avoidance groove 212 can be set to a fixed shape, such as a square; the avoidance groove 212 can also be set to other shapes according to the chip-on-film 201. In one embodiment, the shape of the avoidance groove 212 is adapted to the shape of the chip-on-film 201.

[0052] It is understandable that when the gap a between the first side plate 21 a and the plate 31 is large, the chip-on-film 201 can swing freely in the gap and may be damaged.

[0053] In one embodiment, a silicone pad is provided on the groove wall of the avoidance groove 212; by providing the silicone pad on the groove wall of the avoidance groove 212, when the chip-on-cover film 201 is inserted into the avoidance groove 212, the chip-on-cover film 201 has an interference fit and can be fixed in the avoidance groove 212, thereby avoiding damage to the chip-on-cover film 201.

[0054] In one embodiment, an adhesive layer is disposed on the bottom wall of the avoidance groove 212 to adhere and fix the chip-on-film 201 . The chip-on-film 201 is fixed by disposing the adhesive layer to prevent the chip-on-film 201 from being damaged.

[0055] It should be noted that the above two technical features can be set either one or both. Specifically, in one embodiment, the above two technical features are set both.

[0056] In order to facilitate the installation of the fixing frame 3 , the fixing frame 3 has a plurality of independent panels 31 ; in the actual assembly process, it is only necessary to install the panels 31 onto the corresponding supporting side panels 21 in sequence.

[0057] It can be understood that the plate 31 includes a fixed side plate 311 and a top plate 312. The fixed side plate 311 is magnetically fixed to the supporting side plate 21. The top plate 312 is located above the panel 200 to prevent the plate 31 from sliding down due to its own weight, thereby causing the top plate 312 to press the panel 200 to be tested. In one embodiment, please refer to Figure 4The backlight fixture 100 also includes a positioning structure 5, which includes a positioning column 51 and a positioning hole 52 that are plug-fitted together. The positioning column 51 is arranged on one of the supporting side plate 21 and the fixed side plate 311, and the positioning hole 52 is correspondingly arranged on the other of the supporting side plate 21 and the fixed side plate 311.

[0058] During the assembly process of the plate 31, the positioning holes 52 of the fixed side plate 311 are plugged and matched with the positioning posts 51 on the supporting side plate 21, and the fixed side plate 311 is further pushed forward, so that the fixed side plate 311 is magnetically matched with the magnetic member 41 on the supporting side plate 21. By providing the positioning holes 52 and the positioning posts 51, not only the assembly of the plate 31 is made more convenient, but also the plate 31 can be prevented from sliding down due to its own weight, thereby ensuring the stability of the position of the plate 31 and preventing the panel 200 to be tested from being compressed.

[0059] Furthermore, in order to further improve the stability of the installation of the plate 31, in one embodiment, the positioning column 51 has a first end 511 away from the supporting side plate 21, and the positioning column 51 is formed with a threaded section at a position close to the first end 511, and the first end 511 is penetrated through the positioning hole 52 so that the threaded section is exposed; the fixing assembly 4 also includes a fastening nut 53, which is arranged on a side of the fixing side plate 311 away from the supporting side plate 21 and is threadedly connected to the threaded section of the positioning column 51. In other words, a thread is arranged on the positioning column 51, and when the plate 31 is magnetically fixed to the supporting side plate 21, the plate 31 is further locked by adding the fastening nut 53.

[0060] The present application does not impose any specific restrictions on the installation form of the magnetic member 41. The magnetic member 41 can be fixed in the mounting hole 211 by adhesive; the magnetic member 41 can also be detachably installed in the mounting hole 211 by a threaded connection structure; the magnetic member 41 can also be fixed in the mounting 211 by both adhesive and threaded connection structures. In actual situations, a threaded hole can be provided on the magnetic member 41. When the magnetic member 41 is detachably installed in the mounting hole 211 by a threaded connection structure, the plate member 31 is directly fixed to the supporting side plate 21 by magnetic attraction by the magnetic member 41; when the magnetic member 41 is fixed in the mounting hole 211 by adhesive, the plate member 31 can not only be magnetically fixed to the supporting side plate 21 by the magnetic member 41, but also a through hole can be provided on the fixed side plate 311, and screws can be added and the threaded holes on the magnetic member 41 can be used to thread-lock the plate member 31 with the supporting side plate 21.

[0061] It is understandable that when the plate 31 is fixed by only one magnetic member 41, the stability is low. In one embodiment of the present application, each of the supporting side plates 21 is provided with a plurality of mounting holes 211, and the plurality of mounting holes 211 are arranged side by side and spaced apart along the length direction of the supporting side plates 21. By fixing one plate 31 by a plurality of magnetic members 41, the stability of the installation of the plate 31 can be improved.

[0062] It can be known that the backlight fixture 100 not only includes the above-mentioned structural features, but also includes other structures such as a backlight source 7 and an optical film group 9. In addition, the backlight type of the backlight fixture 100 is not specifically limited. The backlight fixture 100 can be a direct backlight or an edge-type backlight.

[0063] Take the direct-lit backlight as an example for explanation. In one embodiment, refer to Figure 5 The multiple supporting side plates 21 of the supporting frame 2 correspond one by one to the multiple side portions of the bottom plate 1, and together with the bottom plate 1, they enclose a accommodating cavity 6; the backlight fixture 100 also includes a backlight source 7, a reflective sheet 8 and an optical film group 9, the reflective sheet 8 is located in the accommodating cavity 6 and is arranged on the bottom plate 1, the backlight source 7 is located in the accommodating cavity 6 and is arranged on the reflective sheet 8, the optical film group 9 is located in the accommodating cavity 6 and is arranged parallel to the reflective sheet 8, and the optical film group 9 is arranged on the light emitting side of the backlight source 7.

[0064] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0065] The above is a detailed introduction to a backlight fixture provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solution and core ideas of the present application. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A backlight fixture, which provides backlight for the panel to be tested, characterized in that: include: Base plate; A support frame, the support frame is arranged on the bottom plate, and a surface of the support frame on one side away from the bottom plate is used for placing the panel to be tested, the support frame includes a plurality of support side plates arranged in an enclosed manner, and an installation hole is arranged on the outer wall of each of the support side plates; A fixed frame, the fixed frame is arranged around the periphery of the supporting frame, the fixed frame comprises a fixed side plate and a top plate connected to each other, the fixed side plate is arranged in parallel with the supporting side plate on the corresponding side, and the top plate is located above the panel to be tested; and The fixing assembly comprises a plurality of magnetic parts, each of which is arranged in a corresponding mounting hole, and the supporting side plate is magnetically connected to the fixing side plate through the magnetic parts so that the fixing side plate is relatively fixed to the supporting side plate.

2. The backlight fixture according to claim 1, characterized in that: The plurality of supporting side plates include a first side plate, at least an end surface of the magnetic member located on the first side plate is arranged beyond the periphery of the corresponding mounting hole, and a gap is formed between the first side plate and the corresponding fixed side plate; Wherein, the chip-on-chip film of the panel to be tested is placed in the gap.

3. The backlight fixture according to claim 2, characterized in that: An escape groove is arranged on the outer wall of the first side plate, and the escape groove is arranged to penetrate the groove wall on one side away from the bottom plate; Wherein, the chip-on-film of the panel to be tested is inserted into the avoidance groove.

4. The backlight fixture according to claim 3, characterized in that: The shape of the avoidance groove is adapted to the shape of the chip-on-film.

5. The backlight fixture according to claim 3, characterized in that: A silica gel pad is provided on the groove wall of the avoidance groove; and / or, An adhesive layer is arranged on the bottom wall of the avoidance groove for adhering and fixing the chip-on-film.

6. The backlight fixture according to claim 1, characterized in that: The backlight fixture also includes a positioning structure, which includes a positioning column and a positioning hole that are plug-fitted together. The positioning column is arranged on one of the supporting side plate and the fixed side plate, and the positioning hole is correspondingly arranged on the other of the supporting side plate and the fixed side plate.

7. The backlight fixture according to claim 6, characterized in that: The positioning column has a first end portion away from the supporting side plate, the positioning column is formed with a threaded section at a position close to the first end portion, and the first end portion is penetrated through the positioning hole so that the threaded section is exposed; The fixing assembly also includes a fastening nut, which is arranged on a side of the fixing side plate away from the supporting side plate and is threadedly connected to the threaded section of the positioning column.

8. The backlight fixture according to claim 1, characterized in that: The magnetic member is fixed in the mounting hole by adhesive; and / or, The magnetic component is detachably mounted in the mounting hole via a threaded connection structure.

9. The backlight fixture according to claim 8, characterized in that: The magnetic component is fixed in the mounting hole by adhesive, and a threaded hole is provided at the center of the magnetic component, and the fixing frame is connected to the threaded hole by screws.

10. The backlight fixture according to claim 1, characterized in that: The plurality of supporting side plates of the supporting frame correspond to the plurality of side portions of the bottom plate one by one, and together with the bottom plate, form a receiving cavity; The backlight fixture also includes a backlight source, a reflective sheet and an optical film group, wherein the reflective sheet is located in the accommodating cavity and is arranged on the bottom plate, the backlight source is located in the accommodating cavity and is arranged on the reflective sheet, the optical film group is located in the accommodating cavity and is arranged parallel to the reflective sheet, and the optical film group is arranged on the light output side of the backlight source.

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