A backlight device and a display device

Abstract

This invention provides a backlight device and a display device. The backlight device includes a support assembly and a plurality of lamp strips. The support assembly includes two side structural members extending along a first direction and arranged opposite each other, and two support members extending along a second direction and arranged opposite each other. The two ends of each support member are detachably connected to the two ends of the side structural members to form a frame. Each support member has a plurality of first locking interfaces along the second direction, and the first locking interfaces on the two oppositely arranged support members are positioned correspondingly in the first direction. The first direction intersects the second direction, and the ends of the lamp strips are respectively locked into the first locking interfaces of the two oppositely arranged support members. The backlight device of this application is simple to assemble and highly efficient.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a backlight device and a display device. Background Technology

[0002] With the continuous advancement of liquid crystal display (LCD) panel technology, the manufacturing process of glass-based light strips has become increasingly mature, but it is currently mainly limited to the application of single light strips. As the number of LEDs on a single light strip increases, the manufacturing difficulty also increases, especially in the field of large-size, multi-row MiniLED direct-lit light panels, where successful development cases are relatively rare.

[0003] In view of this, a method of splicing multiple glass-based light strips to form a glass-based light panel is proposed. However, when the glass-based light panel formed by splicing multiple glass-based light strips is used in a backlight device, there are problems such as low assembly efficiency. Summary of the Invention

[0004] This invention mainly provides a backlight device and a display device. The backlight device is simple to assemble and highly efficient.

[0005] To solve the above-mentioned technical problems, the first technical solution adopted by the present invention is: to provide a backlight device, comprising:

[0006] A support assembly includes two side structural members extending along a first direction and arranged opposite to each other, and two support members extending along a second direction and arranged opposite to each other; the two ends of the support members are detachably connected to the two ends of the side structural members to form a frame; the support members are respectively provided with a plurality of first card interfaces along the second direction, and the first card interfaces on the two opposite support members are corresponding in position in the first direction; the first direction intersects the second direction;

[0007] Several light strips; the ends of the light strips are respectively snapped into the first snap-fit ​​interfaces of two oppositely arranged support members.

[0008] In one embodiment, the side structure includes a side structure body along the first direction and first snap-fit ​​portions disposed at both ends of the side structure body, wherein the first snap-fit ​​portion is provided with a first through hole penetrating the first snap-fit ​​portion;

[0009] The support member is provided with a second card interface along the second direction and at the position corresponding to the first card interface. The second card interface is provided with a second through hole at the position corresponding to the first through hole. The first card interface is locked into the second card interface. The first through hole and the second through hole are connected.

[0010] The backlight device further includes a first fixing member, which passes through the first through hole and the second through hole to fix the side structure to the support member.

[0011] In one embodiment, the backlight device further includes:

[0012] A reflector sheet; a first limiting member is provided on the first side surface of the support member, and a first positioning part is provided on the reflector sheet at the position corresponding to the first limiting member. The first positioning part cooperates with the first limiting member and is used to fix the reflector sheet.

[0013] The reflector is also provided with a number of windows, each window corresponding to a lamp bead on the lamp strip, and the lamp bead is exposed through the window.

[0014] In one embodiment, the backlight device further includes:

[0015] A clamping member; the clamping member is located on the side of the reflector away from the support member and is provided corresponding to the support member; the two ends of the clamping member near the support member are provided with third locking interfaces at the positions of the side structure members, the first locking part of the side structure members is engaged with the third locking interface, the clamping member is also provided with a third through hole, and the support member is provided with a fourth through hole at the position corresponding to the third through hole;

[0016] The second fixing member passes through the third through hole and the fourth through hole to fix the clamping member;

[0017] Multiple optical films are disposed on the side of the reflector away from the light strip. The clamping member is provided with second limiting members at both ends on the side away from the reflector. The optical film is provided with a second positioning part corresponding to the position of the second limiting member, which cooperates with the second limiting member to fix the optical film.

[0018] In one embodiment, the first card interface includes a plurality of first grooves disposed on a first side of the two supports. The first groove has a bottom wall, two opposing side walls, and a rear wall connecting the two side walls. The ends of a plurality of light strips are engaged in the first grooves. The bottom wall supports the ends of the light strips, the rear wall abuts against the ends of the light strips, and the two side walls contact the sides of the ends of the light strips.

[0019] The first limiting member on the support is positioned offset from the first groove; the reflective sheet includes a reflective sheet body and a lug connecting the reflective sheet body, the lug is positioned corresponding to the first limiting member, and the cross-section of the lug is larger than the cross-section of the first limiting member, the first positioning part is positioned at the lug corresponding to the first limiting member; the outer edge of the reflective sheet is aligned with the inner edge of the frame.

[0020] The clamping member has a second groove on the side near the support member, corresponding to the position of the first groove, and a buffer pad is provided in the second groove.

[0021] In one embodiment, the support member includes a first support member and a second support member, the first card interface includes a third groove with an opening located on a second side of the first support member, and a fourth groove with an opening located on a third side of the second support member, the second side of the first support member and the third side of the second support member being opposite to each other;

[0022] The third groove includes a sub-groove and a sub-through hole that are interconnected. The third groove extends from the second side of the first support member to the third side of the first support member. The diameter of the sub-groove is larger than the diameter of the sub-through hole. One end of the light strip is inserted into the fourth groove, and the other end is inserted into the sub-groove. The sub-through hole is used to provide a signal line for connecting the light strip.

[0023] The backlight device further includes: a plurality of optical films, the optical films being disposed on the side of the reflector away from the light strip, a third limiting member being disposed on the first side surface of the first support member and the second support member, and a third positioning part being disposed on the optical film corresponding to the position of the third limiting member, which cooperates with the third limiting member to fix the optical film.

[0024] In one embodiment, the backlight device further includes:

[0025] The outer frame includes a top wall and an annular side wall connected to the top wall. The top wall has a cutout. The annular side wall surrounds the outer periphery of the frame and has a fourth locking interface corresponding to the position of the support member and a fifth locking interface corresponding to the position of the side structural member. The outer wall of the support member has a second locking portion corresponding to the fourth locking interface, and the outer wall of the side structural member has a third locking portion corresponding to the fifth locking interface. The outer frame covers the light strip, and the second locking portion engages with the fourth locking interface, and the third locking portion engages with the fifth locking interface.

[0026] The annular sidewall is also provided with a clearance groove for leading out signal lines at the position corresponding to the first card interface.

[0027] In one embodiment, the support member is straight or curved.

[0028] In one embodiment, the backlight device further includes:

[0029] A heat dissipation layer is disposed on the side of the reflector close to the lamp strip, or on the side of the lamp strip close to the reflector.

[0030] To solve the above-mentioned technical problems, the first technical solution adopted by the present invention is to provide a display device, the display device including a backlight device and a display panel, the display panel being disposed on the light-emitting side of the backlight device, and the backlight device being any of the backlight devices described above.

[0031] The beneficial effects of this invention are as follows: Unlike existing technologies, the backlight device provided by this invention includes a support assembly and several light strips. The support assembly includes two side structural members extending along a first direction and arranged opposite each other, and two support members extending along a second direction and arranged opposite each other. The two ends of each support member are detachably connected to the two ends of the side structural members to form a frame. Each support member has several first locking interfaces along the second direction, and the first locking interfaces on the two oppositely arranged support members are positioned correspondingly in the first direction. The first direction intersects the second direction, and the ends of the light strips are respectively locked into the first locking interfaces of the two oppositely arranged support members. The backlight device of this application is simple to assemble and highly efficient. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of the first embodiment of the backlight device provided in this application;

[0034] Figure 2 yes Figure 1 An exploded view of the backlight device shown.

[0035] Figure 3 This is a structural schematic diagram of the first embodiment of the support component of this application;

[0036] Figure 4a This is a structural schematic diagram of the second embodiment of the support component of this application;

[0037] Figure 4b yes Figure 4a A cross-sectional view from AA to M.

[0038] Figure 5 This is a structural schematic diagram of the side structural component of this application;

[0039] Figure 6 This is a schematic diagram of the structure of the first embodiment of the reflective sheet of this application;

[0040] Figure 7 This is a schematic diagram of the structure of the second embodiment of the reflective sheet of this application;

[0041] Figure 8a This is a structural schematic diagram of the front of the clamping component in this application;

[0042] Figure 8b This is a structural schematic diagram of the back of the clamping component in this application;

[0043] Figure 9 This is a structural schematic diagram of the third embodiment of the support component of this application;

[0044] Figure 10a This is a schematic diagram of the assembly structure of the side structural components and support components in the backlight device provided in this application;

[0045] Figure 10b This is a schematic diagram of the assembly structure of the lamp strip in the backlight device provided in this application;

[0046] Figure 10c This is a schematic diagram of the assembly structure of the reflector in the backlight device provided in this application;

[0047] Figure 10d This is a schematic diagram of the assembly structure of the clamping component in the backlight device provided in this application;

[0048] Figure 10e This is a schematic diagram of the assembly structure of the optical film in the backlight device provided in this application;

[0049] Figure 11 This is a schematic diagram of the structure of an embodiment of the display device of this application.

[0050] Explanation of reference numerals in the attached drawings: Backlight device 10, Support assembly 1, Lamp strip 11, Support member 12, First card interface 20, Side structural member 13, Side structural member body 133, First card contact 131, First through hole 132, Second card interface 24, Second through hole 25, First fixing member 18, Reflector 14, First limiting member 22, First positioning part 142, Window 143, Pressing member 15, Third card interface 151, Third through hole 154, Fourth through hole 26, Second fixing member 19, First groove 21, Reflector body 144. Lug 141, second groove 152, buffer pad 155, first support 121, second support 122, third groove 1212, sub-groove 1212c, sub-through hole 1212d, optical film 16, second limiting member 153, second positioning part 161, outer frame 17, top wall 174, annular side wall 176, hollow part 175, fourth card interface 173, fifth card interface 172, second card connection part 23, third card connection part 134, clearance groove 171, signal line 30, display device 100, display panel 200. Detailed Implementation

[0051] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0052] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0053] In this article, the term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, "more" in this article means two or more objects.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0055] Before providing a further detailed description of the embodiments of this application, the nouns and terms involved in the embodiments of this application will be explained, and the nouns and terms involved in the embodiments of this application shall be interpreted as follows.

[0056] A backlight device is a device that provides a backlight source for liquid crystal displays (LCDs). Specifically, liquid crystals themselves do not emit light and require a backlight to provide uniform illumination so that the LCD can display clear images and text. Therefore, the backlight device is used to provide a uniform light source. By controlling parameters such as the brightness and color of the backlight, the contrast ratio, color saturation, and brightness uniformity of the LCD can be improved, thereby enhancing the display effect. Thus, a backlight device can enhance the display performance.

[0057] Existing backlight devices generally consist of the following components: a light source, a light guide plate, a reflector, a diffuser, and a reflective film. Common light sources include cold cathode fluorescent lamps (CCFLs) and light-emitting diodes (LEDs). CCFLs offer high brightness and good color performance, but suffer from drawbacks such as high power consumption, large size, and the presence of harmful substances like mercury. LEDs, on the other hand, offer advantages such as low power consumption, long lifespan, fast response speed, small size, and no mercury, thus gaining widespread application. Newer LED technologies, such as Mini LED and MicroLED, further enhance the performance of backlight devices. The light guide plate's function is to uniformly guide the light emitted from the light source across the entire display area. It is typically made of optical-grade plastic or glass materials with special surface treatments, such as etching and printing, to achieve efficient light propagation and uniform distribution. The reflector, located below the light source, reflects the downward-facing light emitted by the light source back to the light guide plate, improving light utilization and reducing light loss. It generally uses materials with high reflectivity, such as aluminum foil or reflective films. A diffuser sheet is primarily used to diffuse the light emitted from the light guide plate, distributing the light more evenly across the entire display area and reducing uneven brightness. It achieves this by scattering light and is typically made of optical-grade plastic film with a surface featuring minute irregularities or the addition of a diffusing agent. A brightness enhancement film, also known as a prism sheet, improves the light extraction efficiency of the backlight device, increasing the monitor's brightness. It focuses the light and directs it forward, reducing scattering from the sides, thus improving light utilization and making the monitor appear brighter.

[0058] Existing backlighting devices are generally divided into direct-lit backlighting and edge-lit backlighting. Direct-lit backlighting places the LED light source directly below the LCD panel, and uses optical components such as light guide plates and diffusers to evenly distribute the light across the entire panel. This backlighting method can achieve high brightness and contrast, and can also achieve local dimming, improving the sense of layering and detail in the picture. Edge-lit backlighting places the LED light source on the side of the LCD panel, and uses a light guide plate to guide the light to the front of the panel. The advantage of this backlighting method is that it allows for a thinner design, making it suitable for slim monitors and televisions.

[0059] The backlight device provided in this application is a direct-lit backlight. To enable those skilled in the art to better understand the technical solution of the present invention, a chip transfer device provided by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0060] See Figure 1 , Figure 1 This is a schematic diagram of the structure of the first embodiment of the backlight device provided in this application. The light source of the backlight device 10 of this application is configured to be assembled from multiple light strips. These light strips can be made from scrap materials, and then several light strips are spliced ​​together to form a light panel. This not only increases material utilization and production capacity, but also reduces costs when a light chip in a particular light strip is damaged, as only the corresponding light strip needs to be replaced instead of replacing the entire light panel. Specifically, the light strips can be glass-based light strips, which are light strips using glass as a substrate. They typically include a glass substrate, a conductive circuit layer, and a light-emitting element. The conductive circuit layer consists of a conductive layer disposed on the glass substrate and an insulating layer covering the conductive layer. The conductive layer extends to one end of the glass substrate, partially exposed to form a driving electrode. The light-emitting element is disposed on the insulating layer and electrically connected to the conductive layer. The driving electrode is connected to an external power source, and current is transmitted through the conductive circuit layer to the light-emitting element, causing the light-emitting element to emit light. The glass substrate provides support and insulation, while the high light transmittance of the glass facilitates light propagation.

[0061] Specifically, in combination Figure 2 , Figure 2 yes Figure 1 An exploded view of the backlight device shown. The backlight device 10 of this application includes a support assembly 1, the support assembly 1 including components along a first direction (e.g., Figure 2 Two side structural members 13 extending and opposite to each other in the middle x direction, and along the second direction (e.g. Figure 2 Two support members 12 extending in the middle (y-direction) and arranged opposite each other; the two ends of the support members 12 are detachably connected to the two ends of the side structural members 13 to form a frame. The support members 12 are integrally formed strip structures. Each support member 12 has a plurality of first card interfaces 20 arranged along the second direction, and the first card interfaces 20 on two oppositely arranged support members 12 are positioned correspondingly in the first direction; the first direction intersects the second direction.

[0062] The backlight device 10 also includes a plurality of light strips 11, which extend along a first direction and are arranged parallel to each other along a second direction. Specifically, the long sides of the light strips 11 extend along the x-direction, and the light strips 11 are arranged parallel to each other in the y-direction, splicing together to form a light panel. The ends of the light strips 11 are respectively snapped into the first snap-fit ​​interfaces 20 of the two oppositely arranged support members 12, thereby fixing the light strips 11 to the support assembly 1. In one embodiment, the x-direction is perpendicular to the y-direction; in another embodiment, the x-direction is not perpendicular to the y-direction, for example, the angle between the x-direction and the y-direction is 30°, 45°, 60°, etc., and there is no specific limitation. For example, one or two rows of LED beads can be set on a single light strip 11, and there is no specific limitation. This application uses the example of setting one row of LED beads on a single light strip 11 for illustration.

[0063] Furthermore, in combination Figure 5 , Figure 5 This is a structural schematic diagram of the side structure component of this application. The side structure component 13 is connected to both ends of the support component 12 to ensure the distance between the two support components 12, form a frame with the support component 12, and provide overall frame structural strength. The side structure component 13 includes a side structure component body 133 along the first direction and a first snap-fit ​​portion 131 disposed at both ends of the side structure component body 133. The first snap-fit ​​portion 131 is provided with a first through hole 132 penetrating through the first snap-fit ​​portion 131. The support component 12 is provided with a second snap-fit ​​interface 24 along the second direction y and corresponding to the position of the first snap-fit ​​portion 131. The second snap-fit ​​interface 24 is provided with a second through hole 25 corresponding to the position of the first through hole 132. The two side structure components 13 are respectively disposed on both sides of the plurality of light strips 11, and the first snap-fit ​​portion 131 is snapped into the second snap-fit ​​interface 24. The first through hole 132 communicates with the second through hole 25.

[0064] In one embodiment, the second card interface 24 can be Figure 3 The groove shown extends from the second side to the third side of the support member 12. Specifically, the groove has a bottom wall and side walls on opposite sides of the bottom wall, thus facilitating the insertion of the first snap-fit ​​portion 131 of the side structure member 13 into the groove. The second snap-fit ​​interface 24 is thus configured to facilitate the installation of the side structure member 13 and the support member 12.

[0065] The backlight device 10 of this application further includes a first fixing member 18, which passes through the first through hole 132 and the second through hole 25 to fix the side structure member 13 to the support member 12. The first through hole 132 and the second through hole 25 can be, for example, threaded holes, and the first fixing member 18 can be a screw or bolt. It should be noted that the dimensions of the first snap-fit ​​portion 131 and the second snap-fit ​​interface 24 can be reasonably set so that after the first snap-fit ​​portion 131 is snapped into the second snap-fit ​​interface 24, the side structure member 13 is flush with the surface of the support member 12.

[0066] In one embodiment, the first snap-fit ​​interface 20 on the support member 12 for snapping the light strip 11 may include a groove disposed on the surface of the support member 12. (Specifically, this is combined with...) Figure 3 , Figure 3 This is a schematic diagram of the structure of the first embodiment of the support member 12 of this application. The first card interface 20 includes a plurality of first grooves 21 disposed on the surface of a first side (defined as the side of the support member 12 facing the reflector) of the two support members 12. The first groove 21 has a bottom wall 213, two opposing side walls 212, and a rear wall 211 connecting the two side walls 212. The ends of a plurality of lamp strips 11 are engaged in the first grooves 21. The bottom wall 213 supports the ends of the lamp strips 11, the rear wall 211 abuts against the ends of the lamp strips 11, and the two side walls 212 contact the sides of the ends of the lamp strips 11. This arrangement can ensure that the lamp strips 11 are stable in the first grooves 21 and avoid vibration. Of course, in other embodiments, the size of the first groove 21 can be slightly larger than the size of the ends of the lamp strips 11. In this case, a buffer pad can be provided in the first groove 21 to separate the lamp strips 11 from the first groove 21 and avoid rigid contact. Understandably, after setting the buffer pad, the remaining space in the first groove 21 is just enough to accommodate the end of the light strip 11, so as to avoid the light strip shaking, etc.

[0067] Understandably, the depth of the first groove 21 is the same as the thickness of the end of the light strip 11, so that when the light strip 11 is inserted into the first groove 21, the surface of the light strip 11 can be flush with the surface of the support member 12.

[0068] Furthermore, in combination Figure 4a and Figure 4b , Figure 4a This is a structural schematic diagram of the second embodiment of the support component of this application; Figure 4b yes Figure 4aA cross-sectional view from position AA to M. The two support members 12 each include a first support member 121 and a second support member 122, which are respectively disposed at opposite ends of the light strip 11. In another embodiment, the first snap-fit ​​interface 20 on the support member 12 for engaging the light strip 11 may include a third groove 1212 with an opening located on the second side (the surface perpendicular to the first side surface) of the first support member 121, and a fourth groove with an opening located on the third side (the surface perpendicular to the first side surface) of the second support member 122, with the second side of the first support member 121 and the third side of the second support member 122 facing each other.

[0069] The third groove 1212 includes a sub-groove 1212c and a sub-through hole 1212d that are interconnected. The third groove 1212 extends from the second side of the first support member 121 to the third side of the first support member 121. The diameter of the sub-groove 1212c is larger than the diameter of the sub-through hole 1212d. One end of the light strip 11 is inserted into the fourth groove, and the other end is inserted into the sub-groove 1212c. The sub-through hole 1212d is used to provide a signal line 30 for connecting the light strip 11.

[0070] In one embodiment, the fourth groove structure on the second support member 122 can be the same as the third groove 1212 structure. However, no signal line needs to be led out from the fourth groove. Therefore, in another embodiment, the fourth groove structure can be different from the third groove 1212. Specifically, the fourth groove can be set as a sub-groove 1212c structure, and the sub-groove 1212c does not penetrate the second support member 122.

[0071] One end of the light strip 11 is inserted into the fourth groove and abuts against the bottom of the fourth groove, and the other end is inserted into the sub-groove 1212c and abuts against the connection between the sub-groove 1212c and the sub-through hole 1212d. The sub-through hole 1212d is used to set the signal line 30 connected to the light strip 11 and to lead out the signal line 30.

[0072] In another embodiment, the second card interface 24 can also be as follows: Figure 4b The structure in the third groove 1212 is designed to fix the side structural member 13 and the support member 12, but the specific design is not limited.

[0073] Furthermore, such as Figure 2 As shown, the backlight device 10 of this application also includes a reflective sheet 14. Combined with... Figure 3 and Figure 6 ( Figure 6(This is a schematic diagram of the structure of the first embodiment of the reflector of this application). A first limiting member 22 is provided on the first side surface of the support member 12, and a first positioning part 142 is provided on the reflector 14 corresponding to the position of the first limiting member 22. The first positioning part 142 cooperates with the first limiting member 22 and is used to fix the reflector 14. Specifically, the reflector 14 is disposed on the first side of the support member 12, and the first limiting member 22 and the first positioning part 142 cooperate to fix the reflector 14.

[0074] In one embodiment, the first limiting member 22 includes, for example, a protrusion disposed on the first side surface of the support member 12, and the first positioning part 142 includes, for example, a through hole through which the protrusion passes, thereby fixing the reflective sheet 14 to the first side of the support member 12.

[0075] Furthermore, the reflector 14 is also provided with a plurality of windows 143, each window 143 corresponding to a lamp bead on the lamp strip 11, exposing the lamp bead through the window 143. In a specific embodiment, the size of the window 143 matches the size of the lamp bead. When the reflector 14 is placed on the lamp strip 11, the lamp bead protrudes from the window 143. This arrangement allows the reflector 14 to reflect as much received light as possible, improving light utilization.

[0076] It should be noted that if reflector 14 and Figure 3 When the support member 12 shown is used in conjunction, Figure 3 This is a schematic diagram of the structure of the first embodiment of the support member of this application. The first limiting member 22 on the support member 12 needs to be offset from the position of the first groove 21. The reflective sheet 14 includes a reflective sheet body 144 and a lug 141 connecting the reflective sheet body 144. The lug 141 is provided at the position corresponding to the first limiting member 22, and the cross-section of the lug 141 is larger than the cross-section of the first limiting member 22. The first positioning part 142 is provided at the position of the lug 141 corresponding to the first limiting member 22. The outer edge of the reflective sheet 14 is aligned with the inner edge of the frame (composed of the support member 12 and the side structure member 13).

[0077] because Figure 3 The middle support member 12 is provided with a first groove 21, in which a signal line 30 needs to be installed. The lug 141 is provided so that the reflector 14 can avoid the signal line 30. It is understood that if the other support member, such as the second support member 122, does not need to install the signal line 30, then the side of the reflector 14 corresponding to the second support member 122 can be provided without the lug 141, and only the first positioning part 142 can be provided.

[0078] In one embodiment, the first positioning part 142 may be a through hole, and the first limiting member 22 may be a protrusion, which passes through the through hole to fix the reflective sheet 14.

[0079] Furthermore, the backlight device also includes a heat dissipation layer (not shown), which is disposed on the side of the reflector 14 near the lamp strip 11, or on the side of the lamp strip 11 near the reflector 14. The heat dissipation layer can be a coated heat dissipation tape. The heat dissipation layer ensures that the reflector 14 adheres to the surface of the lamp strip, preventing the reflector 14 from lifting or falling off; it can also improve heat dissipation efficiency, thereby improving the reliability of the backlight device.

[0080] In another embodiment, if the reflector 14 and Figure 4a When the support member 12 shown is used in conjunction with the reflector 14, the structure of the support member 12 and the reflector 14 is as follows: Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of the second embodiment of the reflective sheet of this application. Since the first card interface 20 is located on the side wall of the support member 12, and the signal line 30 is also led out from the sub-through hole 1212d on the side wall of the support member 12, there is no need to provide a lug to avoid the signal line 30. Therefore, the reflective sheet 14 has a rectangular structure, and a first positioning part 142 is provided at the position corresponding to the first limiting member 22. In this embodiment, the outer edge of the reflective sheet 14 is aligned with the outer edge of the frame.

[0081] Furthermore, such as Figure 2 As shown, the backlight device 10 also includes a clamping member 15 and a second fixing member 19. Combined with... Figure 8a and Figure 8b , Figure 8a This is a structural schematic diagram of the front of the clamping component in this application; Figure 8b This is a structural schematic diagram of the back of the clamping component of this application. The clamping component 15 is located on the side of the reflector 14 away from the support 12 and is disposed corresponding to the support 12; the clamping component 15 has a third locking interface 151 at both ends of the side structure 13 corresponding to the position of the side structure 13 on the side side closer to the support 12, and the first locking portion 131 of the side structure 13 engages with the third locking interface 151. The clamping component 15 is also provided with a third through hole 154, and the support 12 has a fourth through hole 26 corresponding to the position of the third through hole 154. The first locking portion 131 of the side structure 13 engages with the third locking interface 151, fixing the clamping component 15.

[0082] Understandably, the thickness of the first snap-fit ​​portion 131 of the side structure 13 is greater than the depth of the second snap-fit ​​interface 24 of the support 12. As a result, when it is snapped into the second snap-fit ​​interface 24 of the support 12, it protrudes. At this time, the protruding portion is snapped into the third snap-fit ​​interface 151, which can further fix the side structure 13.

[0083] Furthermore, the clamping member 15 is also provided with a third through hole 154, and the support member 12 is provided with a fourth through hole 26 corresponding to the position of the third through hole 154. The second fixing member 19 passes through the third through hole 154 and the fourth through hole 26 to fix the clamping member 15. The third through hole 154 and the fourth through hole 26 can be threaded holes, for example, and the second fixing member 19 can be a screw or bolt, for example.

[0084] The clamping member 15 is used for both positioning the optical film 16 and fixing the lamp strip 11. The support member 12, for example... Figure 3 As shown, since the light strip 11 is set in the first groove 21, and the side of the first groove 21 near the reflector 14 is open, the light strip 11 is unstable and will squeeze the reflector 14. Therefore, the clamping member 15 is provided to clamp it.

[0085] Additionally, the clamping member 15 is positioned corresponding to the support member 12. Since the first support member 121 needs to lead a signal line from the first groove 21, a second groove 152 is provided on the side of the clamping member 15 closest to the support member 12, corresponding to the position of the first groove 21. To protect the light strip 11, a buffer pad 155 is also provided in the second groove 152. The clamping member 15 is fixed to the support member 12, the second groove 152 corresponds to the first groove 21, and the buffer pad 155 is used to protect the light strip 11. It should be noted that the thickness of the buffer pad 155 is greater than or equal to the depth of the second groove 152. To protect the light strip 11, the buffer pad 155 is made of materials such as rubber, silicone, or PU, which can provide cushioning and prevent rigid contact between the light strip 11 and the clamping member 15, thus avoiding breakage or damage. The clamping component 15 can be made of metal materials such as electro-galvanized steel SECC, hot-dip galvanized steel SGCC, stainless steel or aluminum alloy, or plastic materials such as acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC) or polypropylene (PP).

[0086] Understandably, the structure of the second groove 152 can be the same as that of the first groove 21, or the structure of the second groove 152 can be the same as that of the third groove 1212, as long as it can avoid the signal line 30. No specific limitation is made. The clamping member 15 corresponding to the second support member 122 does not need to avoid the signal line. Therefore, the second groove 152 may not be provided at the position of the clamping member 15 corresponding to the light strip 11; only a buffer pad can be provided at the position corresponding to the light strip 11 to provide a buffering effect.

[0087] like Figure 2As shown, the backlight device 10 also includes a plurality of optical films 16 disposed on the side of the reflector 14 away from the lamp strip 11. The clamping member 15 is provided with second limiting members 153 at both ends on the side away from the reflector 14. The optical film 16 is provided with a second positioning part 161 corresponding to the position of the second limiting member 153, which cooperates with the second limiting member 153 to fix the optical film. In one embodiment, the second limiting member 153 may be a protrusion, and the second positioning part 161 may be a through hole. The plurality of optical films 16 cover the reflector 14, and the protrusion passes through the through hole to fix the optical film 16.

[0088] In another embodiment, the support member 12 structure is as follows: Figure 4a As shown, the light strip 11 is engaged inside the first card interface 20 at this time, preventing it from falling off and without compressing the reflector 14. Therefore, a clamping member 15 is not required. Of course, to avoid rigid contact between the light strip 11 and the support member 12, a buffer pad can be provided in the first card interface 20. Furthermore, in this embodiment, since a clamping member 15 is not required, a third limiting member (not shown in the figure, but could be a protrusion) can be provided on the first side surface of the first support member 121 and the second support member 122 to fix the optical film 16. The optical film 16 has a third positioning part (for example, a through hole) corresponding to the position of the third limiting member to cooperate with the third limiting member to fix the optical module. The plurality of optical films 16 cover the reflector 14, and the protrusion penetrates the through hole, thereby fixing the optical film 16.

[0089] The backlight device 10 of this application further includes an outer frame 17, which includes a top wall 174 and an annular side wall 176 connected to the top wall 174. The top wall 174 has a hollow portion 175, and the annular side wall 176 surrounds the outer periphery of the frame (composed of the support member 12 and the side structural member 13). A fourth locking interface 173 is provided on the annular side wall 176 at the position corresponding to the support member 12, and a fifth locking interface 172 is provided at the position corresponding to the side structural member 13. A second locking portion 23 is provided on the outer wall of the support member 12 at the position corresponding to the fourth locking interface 173, and a third locking portion 134 is provided on the outer wall of the side structural member 13 at the position corresponding to the fifth locking interface 172. The outer frame 17 covers the light strip 11, with the second locking portion 23 engaging with the fourth locking interface 173 and the third locking portion 134 engaging with the fifth locking interface 172. The outer frame 17 also has a clearance groove 171 for leading out the signal line 30 at the position of the annular sidewall 176 corresponding to the first card interface 20.

[0090] Understandably, the fourth card interface 173 and the fifth card interface 172 are through holes in order to secure the outer frame 17. Furthermore, the outer frame 17 is made of an elastic material.

[0091] In the backlight device 10 of this application, the support member 12 is in the shape of a straight strip (e.g., Figure 3 or Figure 4a and Figure 4b (as shown) or curved (as shown) Figure 9 As shown, Figure 9 (This is a structural schematic diagram of the third embodiment of the support member of this application). If a curved backlight device 10 is to be made, it is only necessary to make the straight support member 12 into a curved support member 12. Other components do not need to be replaced. As long as the installation space formed by the curved support member 12 is sufficient, the remaining components can be directly installed on the curved support member 12. The assembly is simple and the versatility of the components can be improved.

[0092] See Figures 10a-10e In one embodiment, the side structural member 13 can be assembled with the support member 12 first, and then the light strip 11 can be assembled on the support member 12. In another embodiment, the light strip 11 can be assembled on the support member 12 first, and then the side structural member 13 can be installed. This application Figure 10a First, assemble the side structural member 13 with the support member 12. Specifically, snap the first snap-fit ​​portion 131 at both ends of the side structural member body 133 into the second snap-fit ​​interface 24 at the end of the support member 12. Align the first through hole 132 on the first snap-fit ​​portion 131 with the second through hole 25 in the second snap-fit ​​interface 24. The first fixing member 18 passes through the first through hole 132 and the second through hole 25 to fix the side structural member 13 and the support member 12.

[0093] Furthermore, such as Figure 10b As shown, LED strips 11 are inserted sequentially into the first card interface 20 on the support member 12, and signal lines 30 are inserted sequentially.

[0094] like Figure 10c As shown, a reflector 14 is placed above the light strip 11. Specifically, to improve the assembly effect, heat dissipation tape can be pre-applied to the bottom surface of the reflector 14 (i.e., the side near the light strip) or the surface of the light strip 11 (the side near the reflector 14) to form a heat dissipation layer. This ensures that the reflector 14 adheres to the surface of the light strip 11, preventing the reflector 14 from lifting or falling off, and also improves heat dissipation efficiency, thereby improving the reliability of the backlight device. When the reflector 14 is placed on the surface of the light strip 11, the first limiting member 22 on the support member 12 cooperates with the first positioning part 142 on the reflector to fix the reflector 14.

[0095] like Figure 10dAs shown, the clamping member 15 is further assembled. The first snap-fit ​​portion 131 of the side structural member 13 snaps into the third snap-fit ​​interface 151 of the clamping member 15, and the first groove 21 of the clamping member 15 corresponds to the first snap-fit ​​interface 20 of the support member 12. The buffer pad in the first groove 21 presses the light strip 11 in the first snap-fit ​​interface 20. Furthermore, the third through hole 154 on the clamping member 15 is aligned with the fourth through hole 26 of the support member 12, and the second fixing member 19 passes through the third through hole 154 and the fourth through hole 26 to fix the clamping member 15 to the support member 12.

[0096] like Figure 10e As shown, the optical diaphragm 16 is assembled, and the second positioning part 161 on the optical diaphragm 16 cooperates with the second limiting part 153 on the clamping member 15 to fix the optical diaphragm 16. Finally, the outer frame 17 is covered to ensure that the second snap-fit ​​part 23 on the outside of the support member 12 and the third snap-fit ​​part 134 on the outside of the side structure member 13 are snapped into the fourth snap-fit ​​interface 173 and the fifth snap-fit ​​interface 172 of the outer frame 17.

[0097] The beneficial effects of this application are as follows: Assembling individual glass-based LED strips and fixing them with clamping components to form a LED panel assembly, combined with reflectors, optical films, and frames, constitutes a backlight device. The advantages are: each LED strip can be manufactured independently, and any defective strip (broken LED / insufficient brightness) can be replaced at any time. Only individual LED strips need to be manufactured, significantly simplifying the process compared to a single direct-lit glass substrate, thus improving the yield rate of glass-based LED strips and reducing costs. Furthermore, if the size of the LED strip changes, only the support component needs to be changed, without replacing other components, improving component versatility. It is also suitable for both flat and curved display modules, eliminating the need to replace the support component, and its high component versatility makes it suitable for automated assembly, improving assembly efficiency.

[0098] See Figure 11 , Figure 11 This is a schematic diagram of the structure of an embodiment of the display device of this application. The display device 100 includes a backlight device 10 and a display panel 200. The display panel 200 is disposed on the light-emitting side of the backlight device 10. The backlight device 10 is the backlight device 10 shown in any of the above embodiments, and will not be described again here.

[0099] The above are merely embodiments of the present invention and do not limit the scope of patent protection of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A backlight device, characterized in that, include: A support assembly includes two side structural members extending along a first direction and arranged opposite to each other, and two support members extending along a second direction and arranged opposite to each other; the two ends of the support members are detachably connected to the two ends of the side structural members to form a frame; the support members are respectively provided with a plurality of first card interfaces along the second direction, and the first card interfaces on the two opposite support members are corresponding in position in the first direction; the first direction intersects the second direction; A plurality of light strips; the ends of the light strips are respectively snapped into the first snap-fit ​​interfaces of two oppositely arranged support members; wherein, the first snap-fit ​​interface includes a plurality of first grooves disposed on the first side of the two support members; the ends of the plurality of light strips are snapped into the first grooves; The reflector has a first limiting member on its first side surface and a first positioning part on its first side corresponding to the position of the first limiting member. The first positioning part cooperates with the first limiting member and is used to fix the reflector. The reflector is located on the side of the light strip away from the support assembly, and the first side of the support is close to the reflector. The outer frame includes a top wall and an annular side wall connected to the top wall. The top wall has a cutout. The annular side wall surrounds the outer perimeter of the frame and has a fourth locking interface corresponding to the position of the support member and a fifth locking interface corresponding to the position of the side structural member. The outer wall of the support member has a second locking portion corresponding to the fourth locking interface, and the outer wall of the side structural member has a third locking portion corresponding to the fifth locking interface. The outer frame covers the light strip, with the second locking portion engaging with the fourth locking interface and the third locking portion engaging with the fifth locking interface. The outer frame is made of an elastic material. The annular sidewall is also provided with a clearance groove for leading out signal lines at the position corresponding to the first card interface.

2. The backlight device according to claim 1, characterized in that, The side structure includes a side structure body along the first direction and a first snap-fit ​​portion disposed at both ends of the side structure body. The first snap-fit ​​portion is provided with a first through hole penetrating the first snap-fit ​​portion. The support member is provided with a second card interface along the second direction and at the position corresponding to the first card interface. The second card interface is provided with a second through hole at the position corresponding to the first through hole. The first card interface is locked into the second card interface. The first through hole and the second through hole are connected. The backlight device further includes a first fixing member, which passes through the first through hole and the second through hole to fix the side structure to the support member.

3. The backlight device according to claim 2, characterized in that, The reflector is also provided with a number of windows, each window corresponding to a lamp bead on the lamp strip, and the lamp bead is exposed through the window.

4. The backlight device according to claim 3, characterized in that, The backlight device further includes: A clamping member; the clamping member is located on the side of the reflector away from the support member and is provided corresponding to the support member; the two ends of the clamping member near the support member are provided with third locking interfaces at the positions of the side structure members, the first locking part of the side structure members is engaged with the third locking interface, the clamping member is also provided with a third through hole, and the support member is provided with a fourth through hole at the position corresponding to the third through hole; The second fixing member passes through the third through hole and the fourth through hole to fix the clamping member; Multiple optical films are disposed on the side of the reflector away from the light strip. The clamping member is provided with second limiting members at both ends on the side away from the reflector. The optical film is provided with a second positioning part corresponding to the position of the second limiting member, which cooperates with the second limiting member to fix the optical film.

5. The backlight device according to claim 4, characterized in that, The first groove has a bottom wall, two opposing side walls, and a rear wall connecting the two side walls; the ends of a plurality of light strips are engaged in the first groove, the bottom wall supports the ends of the light strips, the rear wall abuts against the ends of the light strips, and the two side walls contact the sides of the ends of the light strips; The first limiting member on the support is positioned offset from the first groove; the reflective sheet includes a reflective sheet body and a lug connecting the reflective sheet body, the lug is positioned corresponding to the first limiting member, and the cross-section of the lug is larger than the cross-section of the first limiting member, the first positioning part is positioned at the lug corresponding to the first limiting member; the outer edge of the reflective sheet is aligned with the inner edge of the frame. The clamping member has a second groove on the side near the support member, corresponding to the position of the first groove, and a buffer pad is provided in the second groove.

6. The backlight device according to claim 3, characterized in that, The support includes a first support and a second support. The first card interface includes a third groove with an opening on a second side of the first support and a fourth groove with an opening on a third side of the second support. The second side of the first support and the third side of the second support are opposite to each other. The second side and the third side are surfaces perpendicular to the first side. The third groove includes a sub-groove and a sub-through hole that are interconnected. The third groove extends from the second side of the first support member to the third side of the first support member. The diameter of the sub-groove is larger than the diameter of the sub-through hole. One end of the light strip is inserted into the fourth groove, and the other end is inserted into the sub-groove. The sub-through hole is used to provide a signal line for connecting the light strip. The backlight device further includes: a plurality of optical films, the optical films being disposed on the side of the reflector away from the light strip, a third limiting member being disposed on the first side surface of the first support member and the second support member, and a third positioning part being disposed on the optical film corresponding to the position of the third limiting member, which cooperates with the third limiting member to fix the optical film.

7. The backlight device according to any one of claims 1-6, characterized in that, The support member is either straight or curved.

8. The backlight device according to claim 3, characterized in that, The backlight device further includes: A heat dissipation layer is disposed on the side of the reflector close to the lamp strip, or on the side of the lamp strip close to the reflector.

9. A display device, characterized in that, The display device includes a backlight device and a display panel, wherein the display panel is disposed on the light-emitting side of the backlight device, and the backlight device is the backlight device according to any one of claims 1 to 8.

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