Display device

Abstract

The utility model discloses a display device, which comprises a shell, a backlight module and a display panel, and is characterized in that the shell comprises a front frame and a back plate; the display panel comprises a first substrate and a second substrate. The backlight module comprises a light bar, and the light bar comprises a light-emitting substrate and a light-emitting unit. The light-emitting substrate and the back plate are both made of glass materials, and the side, away from the light-emitting unit, of the light-emitting substrate is fixed to the back plate through a welding structure. Or, the light-emitting substrate and the front frame are both made of glass materials, and the side, away from the light-emitting unit, of the light-emitting substrate is fixed to the front frame through a welding structure. The light-emitting substrate of the light bar is welded with the front frame or the back plate through laser, so that the fixing effect is improved. The glass-based light bar is directly welded to the back plate or the front frame through the welding structure, manual assembly is not needed, and therefore the effects of improving the yield and reducing the labor cost are achieved; and meanwhile, the use of back glue of the light bar is reduced, and the material cost is reduced.

Description

Technical Field

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

[0002] With the continuous development of the LCD (Liquid Crystal Display) industry, competition is intensifying. Seizing cost advantages has become a crucial factor in maintaining a solid market position; therefore, improving glass utilization is a key factor in reducing costs. In related technologies, many large glass panels leave residual glass substrate after being cut. Recycling this waste into glass-based light strips can significantly reduce costs. However, because glass is fragile and pressure-resistant, manual assembly often results in breakage, reducing product yield. Utility Model Content

[0003] In view of this, the present application provides a display device to solve the problems in the prior art of glass substrate waste, easy breakage during assembly, and reduced product yield.

[0004] To solve the above technical problems, the first technical solution provided by this application is as follows: providing a display device, comprising: a housing, a backlight module, and a display panel, wherein the housing comprises a front frame and a back plate; the display panel comprises a first substrate and a second substrate; the backlight module comprises a light bar, and the light bar comprises a light-emitting substrate and a light-emitting unit; wherein the light-emitting substrate and the back plate are both made of glass, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the back plate via a welding structure; or, wherein the light-emitting substrate and the front frame are both made of glass, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the front frame via a welding structure. The light-emitting substrate of the light bar is laser welded to the front frame or the back plate to improve the fixing effect.

[0005] In one embodiment, the back panel includes a first main body portion and a first extension portion that are interconnected; the first main body portion is arranged on a side of the backlight module away from the display panel, and the first extension portion extends from one end of the first main body portion to the side surfaces of the display panel and the backlight module; the first substrate has a light-emitting surface; the front frame includes a second main body portion and a second extension portion, one end of the second main body portion is arranged on the light-emitting surface, and the second extension portion extends from the other end of the second main body portion to the side surfaces of the display panel and the backlight module; the second extension portion and the first extension portion are located on the inner side of the other; a first welding structure is formed between a side of the light-emitting substrate away from the light-emitting unit and the first extension portion or the inner side of the second extension portion; or, a first welding structure is formed between a side of the light-emitting substrate away from the light-emitting unit and the first main body portion; wherein, the first welding structure does not penetrate the light-emitting substrate.

[0006] In one embodiment, the first extension portion is located inside the second extension portion; wherein,

[0007] The backlight module is of side-entry type, and the light bar is arranged on the inner surface of the first extension portion; the setting direction of the first welding structure is not perpendicular to the light emitting direction of the light emitting unit; the light emitting direction of the light emitting unit is parallel to the light emitting surface and parallel to the first main body.

[0008] In one embodiment, the first extension portion is located inside the second extension portion; wherein,

[0009] The backlight module is a direct-down type, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the first main body through the first welding structure; wherein the projection of the first welding structure along the first direction is staggered with the display panel; wherein the first direction is perpendicular to the light-emitting surface.

[0010] In one embodiment, the display device may further include a middle frame, which is at least partially arranged on the side of the display panel; wherein the middle frame includes: a third main body portion and a third extension portion that are connected to each other, and the third main body portion is spaced apart from the first main body portion at an end close to the light bar to form a receiving groove for accommodating the light bar, and the third extension portion extends from an end of the third main body portion away from the second main body portion toward a direction away from the second extension portion; wherein the projection of the third main body portion along the second direction is spaced apart from the backlight module; wherein the second direction is parallel to the light emitting surface.

[0011] In one embodiment, the backlight module may further include: a reflective layer and an optical film, which are sequentially arranged on the inner surface of the first main body; wherein the light-emitting unit is spaced apart from the reflective layer and the optical film; the projection of the first welding structure along the second direction is located on the side of the optical film; wherein the width of the first welding structure is not less than 150 μm.

[0012] In one embodiment, the first extension portion is located inside the second extension portion; wherein,

[0013] The backlight module is a direct-down type, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the first main body through the first welding structure; there are multiple light strips, and the multiple light strips are all arranged on the inner surface of the first main body; adjacent light strips are arranged at intervals or the light-emitting units are isolated and fixed by an encapsulation layer, wherein the light-emitting substrate of each light bar is respectively fixed to the first main body through the first welding structure.

[0014] In one embodiment, the display device may further include: an optical film and a middle frame, the optical film is arranged on a side of the display panel close to the first main body portion; the middle frame is at least partially arranged on the side of the display panel; wherein, the middle frame includes: a third main body portion and a third extension portion connected to each other, the two ends of the third main body portion are respectively abutted against the first main body portion and the second main body portion, and the third extension portion extends along the second direction from the side of the third main body portion away from the first extension portion; wherein, the third extension portion is abutted against the surface of the optical film close to the first main body portion; the projection of the third main body portion along the second direction at least partially covers the light strip; the third main body portion and the third extension portion are both arranged at intervals from a plurality of the light strips; the second direction is parallel to the light emitting surface and perpendicular to the first main body portion.

[0015] In one embodiment, the display device may further include: a coating layer and a sandblasting layer; the coating layer is provided on the outer surface of the housing; or the sandblasting layer is provided on the outer surface of the housing.

[0016] In one embodiment, the display panel may include an array substrate, an opposing substrate, and a liquid crystal layer disposed between the array substrate and the opposing substrate; the first substrate is the opposing substrate, and the second substrate is the array substrate.

[0017] Beneficial effects of the present application: Different from the prior art, the display device of the present application includes: a housing, a backlight module and a display panel, the housing includes a front frame and a back panel; the display panel includes a first substrate and a second substrate; the backlight module includes a light bar, and the light bar includes a light-emitting substrate and a light-emitting unit; wherein, the light-emitting substrate and the back panel are both made of glass, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the back panel through a welding structure; or, the light-emitting substrate and the front frame are both made of glass, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the front frame through a welding structure. The light-emitting substrate of the light bar is laser welded to the front frame or the back panel, thereby improving the fixing effect. The present application directly welds the glass-based light bar to the back panel or the front frame through a welding structure, without manual assembly, thereby achieving the effect of improving yield and reducing labor costs; at the same time, it reduces the use of adhesive backing of the light bar and reduces material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technical workers in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the display device provided by this application;

[0020] Figure 2 is a partial structural cross-sectional view of the edge-lit display device provided in the first embodiment of the present application;

[0021] Figure 3 is a partial structural cross-sectional view of a direct-lit display device provided in the second embodiment of the present application;

[0022] Figure 4 is another partial structural cross-sectional view of the direct-lit display device provided in the second embodiment of the present application;

[0023] Figure 5 This is a partial structural cross-sectional view of a first direct-lit display device provided in the third embodiment of the present application;

[0024] Figure 6 is a partial structural cross-sectional view of a second direct-lit display device provided in the third embodiment of the present application;

[0025] Figure 7 This application Figure 3 An enlarged view of the local structure of Part A is provided;

[0026] Figure 8 This is a schematic diagram of the structure of a light bar in the display device provided by this application;

[0027] Figure 9 This is another structural schematic diagram of the light bar in the display device provided in this application.

[0028] Description of reference numerals:

[0029] 100, display device; 101, display area; 102, non-display area; 10, housing; 11, front frame; 111, second main body; 112, second extension; 12, back plate; 121, first extension; 122, first main body; 123, GOA driver circuit; 13, middle frame; 131, third main body; 132, third extension; 20, display panel; 21, first substrate; 22, second substrate; 2 1a, opposing substrate; 22a, array substrate; 23, polarizer; 24, light-emitting surface; 25, liquid crystal layer; 30, backlight module; 31, optical film; 32, reflective layer; 33, light bar; 330, sub-light bar; 331, light-emitting substrate; 332, light-emitting unit; 34, encapsulation layer; 40, first welding structure; 50, receiving groove; 51, first gap; 52, second gap; 71, coating layer; 72, sandblasting layer. DETAILED DESCRIPTION

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

[0031] The terms "first", "second" and "first" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can explicitly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, movement, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the steps or units listed, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0032] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, that the embodiments described herein may be combined with other embodiments.

[0033] During the research process for this application, we discovered that with the continuous development of the LCD panel industry and increasing competition, leveraging cost advantages has become a crucial factor in maintaining a strong market position. Therefore, improving glass utilization efficiency has become a key factor in reducing costs. Currently, many large glass panels leave residual glass substrate after being cut. Reusing this waste glass substrate into glass-based light strips can significantly reduce costs, leading to the emergence of glass-based light strips. However, due to the fragility and pressure resistance of glass, manual assembly often results in breakage, reducing product yield.

[0034] Based on the above problems, the embodiment of the present application encapsulates the glass-based light bar through laser welding, which not only improves the yield of the glass-based light bar, but also reduces the labor cost generated during the assembly process.

[0035] See also Figures 1 to 7 , Figure 1 This is a schematic diagram of the overall structure of the display device provided by this application; Figure 2 is a partial structural cross-sectional view of an edge-lit display device provided in the first embodiment of the present application; Figure 3 is a partial structural cross-sectional view of a direct-lit display device provided in the second embodiment of the present application; Figure 4 is another partial structural cross-sectional view of the direct-lit display device provided in the second embodiment of the present application; Figure 5 This is a partial structural cross-sectional view of a first direct-lit display device provided in the third embodiment of the present application; Figure 6 is a partial structural cross-sectional view of a second direct-lit display device provided in the third embodiment of the present application; Figure 7 This application Figure 3 An enlarged view of the local structure of part A is provided.

[0036] like Figure 1 As shown, a display device 100 provided in an embodiment of the present application includes: a housing 10, a backlight module 30 and a display panel 20, wherein the housing 10 includes a front frame 11 and a back plate 12; the display panel 20 includes a first substrate 21 and a second substrate 22 arranged opposite to each other.

[0037] Specifically, the housing 10 can be at least partially wrapped around the periphery of the display panel 20 and the backlight module 30, thereby providing protection for the display panel 20 and the backlight module 30, while also preventing the internal circuits (not shown) of the display panel 20 and the backlight module 30, the light-emitting unit 332, etc. from being exposed. The display panel 20 has a display area 101 and a non-display area 102. The display area 101 refers to the effective display area 101 domain of the display panel 20, that is, the portion of the screen that can display an image; the non-display area 102 includes the screen edge, border, etc., such as the front frame 11. Generally speaking, the front frame 11 is at least partially disposed on the front of the display device 100, and the back panel 12 is at least partially disposed on the back of the display device 100, and both can partially extend to the side of the display device 100. The display panel 20 can specifically be a liquid crystal display panel 20.

[0038] like Figures 2 to 6 As shown, the display panel 20 includes an array substrate 22a, an opposing substrate 21a, and a liquid crystal layer 25 disposed between the array substrate 22a and the opposing substrate 21a. The opposing substrate 21a may be the first substrate 21 described above, and may further be a color filter substrate. The second substrate 22 may be the array substrate 22a, but this application does not limit this. Polarizers 23 may also be disposed on opposite sides of the array substrate 22a and the opposing substrate 21a, which are spaced apart from each other.

[0039] like Figures 2 to 6 As shown, the backlight module 30 may specifically include a light bar 33, a reflective layer 32, and an optical film 31. The light bar 33 includes a light-emitting substrate 331 and a light-emitting unit 332 disposed on one side of the light-emitting substrate 331. It can be understood that the light-emitting substrate 331 is the base substrate of the light bar 33 and does not emit light itself.

[0040] In one embodiment, the light-emitting substrate 331 and the back panel 12 are both made of glass, and the side of the light-emitting substrate 331 away from the light-emitting unit 332 is fixed to the back panel 12 through a welding structure; or, the light-emitting substrate 331 and the front frame 11 are both made of glass, and the side of the light-emitting substrate 331 away from the light-emitting unit 332 is fixed to the front frame 11 through a welding structure (not marked in the figure).

[0041] Specifically, the light-emitting substrate 331 of the light bar 33 is laser-welded to the front frame 11 or the back plate 12 to improve the fixing effect. It should be noted that in the embodiments of the present application, the light-emitting substrate 331 and the front frame 11, or the light-emitting substrate 331 and the back plate 12 fixed by the welding structure, are both welded to each other. They are not welded to other materials (plastic or ceramic, etc.) commonly used in the art. The present application does not make any specific restrictions on the material of the substrate that is not welded. For example, when the light-emitting substrate 331 and the front frame 11 are fixed by the welding structure, both are made of glass. In this case, the material of the back plate 12 is not limited. When the light-emitting substrate 331 and the back plate 12 are fixed by the welding structure, both are made of glass. In this case, the material of the front frame 11 is not limited.

[0042] Specifically, the light bar 33 may be a glass-based light bar 33, and the light-emitting unit 332 may be an LED, a mini LED, or a microLED, etc., which is not limited in this application.

[0043] In the embodiment provided herein, when the light-emitting substrate 331 and the front frame 11 are fixed by laser welding, both the light-emitting substrate 331 and the front frame 11 are made of glass. Under the irradiation of the laser, the glass at the locations where the light-emitting substrate 331 and the front frame 11 are to be welded can be fused, or solder can be provided at the locations where the light-emitting substrate 331 and the front frame 11 are to be welded, thereby completing the laser welding and fixing of the light-emitting substrate 331 and the front frame 11. The material of the back panel 12 is not limited herein; for example, the back panel 12 can be glass or transparent plastic. Alternatively, when the light-emitting substrate 331 and the back panel 12 are fixed by laser welding, both the light-emitting substrate 331 and the back panel 12 are made of glass. Under the irradiation of the laser, the glass at the locations where the light-emitting substrate 331 and the back panel 12 are to be welded can be fused, or solder can be provided at the locations where the light-emitting substrate 331 and the back panel 12 are to be welded, thereby completing the laser welding and fixing of the light-emitting substrate 331 and the back panel 12. The material of the front frame 11 is not limited here. For example, the front frame 11 can be made of glass or transparent plastic.

[0044] In one embodiment, the solder may be an opaque pigment or glass fiber. Filling the solder at the location to be soldered between the light-emitting substrate 331 and the front frame 11 or the back panel 12 can increase the laser absorption rate, allowing the solder to melt after laser irradiation and connect to the light-emitting substrate 331 and the front frame 11. Furthermore, process parameters can be adjusted using a focusing lens, automatic focus compensation, and a precision motion control system to ensure that the distance between the light-emitting substrate 331 and the front frame 11 or the back panel 12 is no less than a preset distance, for example, 1.5 μm to 2 μm.

[0045] In one embodiment, femtosecond laser welding technology can be used for the laser welding of the light-emitting substrate 331 and the front frame 11, and / or the light-emitting substrate 331 and the back panel 12. Without destroying the original display structure of the LCD, the glass is instantly melted at the welding position by a femtosecond laser to achieve a welding effect, thereby improving the peeling strength between the glass light-emitting substrate 331 and the glass front frame 11, or the glass light-emitting substrate 331 and the glass back panel 12, and improving the overall waterproof effect of the display device 100.

[0046] In one embodiment, if Figures 2 to 7 As shown, the back panel 12 includes a first main portion 122 and a first extension portion 121 that are connected to each other. The first main portion 122 is disposed on a side of the backlight module 30 away from the display panel 20, and the first extension portion 121 extends from one end of the first main portion 122 to the side of the display panel 20 and the backlight module 30. The first main portion 122 and the first extension portion 121 can be welded, bonded, or integrated. In this embodiment, they can be an integrated structure, thereby improving the waterproof effect and aesthetics of the housing 10 of the display device 100.

[0047] In one embodiment, if Figures 2 to 5 As shown, the first substrate 21 has a light-emitting surface 24. The front frame 11 includes a second main body portion 111 and a second extension portion 112. The second main body portion 111 and the second extension portion 112 can be welded, bonded, or integrated. In this embodiment, they can be integrated to improve the waterproofing of the housing 10 of the display device 100. One end of the second main body portion 111 is disposed on the light-emitting surface 24. The second extension portion 112 extends from the other end of the second main body portion 111 to the side of the display panel 20 and the backlight module 30. The second extension portion 112 and the first extension portion 121 are located on the inner side of each other. The inner side here can be understood as the side relatively closer to the display panel 20 and the backlight module 30.

[0048] Specifically, if Figures 2 to 5 As shown, the extension direction of the second extension portion 112 and the first extension portion 121 are opposite in the first direction (the thickness direction of the display device 100), for example, the first extension portion 121 extends from the back side toward the front side of the display device 100, while the second extension portion 112 extends from the front side toward the back side of the display device 100.

[0049] In one embodiment, a first welding structure 40 is formed between a side of the light-emitting substrate 331 away from the light-emitting unit 332 and the first extension portion 121 or the second extension portion 112 located on the inner side; or, a first welding structure 40 is formed between a side of the light-emitting substrate 331 away from the light-emitting unit 332 and the first main body portion 122.

[0050] That is to say, if Figures 2 to 4 As shown, when the backlight module 30 is an edge-lit type, if the first extension portion 121 is located inward, a first welding structure 40 is formed between the side of the light-emitting substrate 331 away from the light-emitting unit 332 and the first extension portion 121. If the second extension portion 112 is located inward, a first welding structure 40 is formed between the side of the light-emitting substrate 331 away from the light-emitting unit 332 and the second extension portion 112. When the backlight module 30 is a direct-lit type, the light-emitting substrate 331 is disposed in contact with the first main body portion 122, and a first welding structure 40 is formed between the side of the light-emitting substrate 331 away from the light-emitting unit 332 and the first main body portion 122. For example, the light strip 33 can be arranged at a corner between the first extension portion 121 and the first main body portion 122. When the backlight module 30 is a side-entry type, the light-emitting substrate 331 and the inner one of the first extension portion 121 and the second extension portion 112 form a first welding structure 40 to achieve the effect of laser fixed packaging; when the backlight module 30 is a direct-down type, a first welding structure 40 is formed between the light-emitting substrate 331 and the first main body portion 122 to achieve the effect of laser fixed packaging.

[0051] In the embodiment of the present application, the glass-based light strip 33 is directly welded to the back plate 12 or the front frame 11 through the first welding structure 40, without manual assembly, thereby achieving the effect of improving yield and reducing labor costs; at the same time, the use of adhesive on the back of the light strip 33 is reduced, reducing material costs.

[0052] The first welding structure 40 does not penetrate the light-emitting substrate 331, thereby preventing the first welding structure 40 from affecting the light-emitting substrate 331. For example, the high temperature generated during laser welding may affect the circuits installed in the light-emitting substrate 331. It should be noted that the first welding structure 40 must not be locally warped during the formation process to avoid local stress and glass breakage during subsequent welding.

[0053] In the first embodiment provided in this application:

[0054] like Figure 2 As shown, the first extension portion 121 is located on the inner side of the second extension portion 112, and the second extension portion 112 is connected to the second main body portion 111 and is located on the outer side of the first extension portion 121, so that when the display device 100 is viewed from the front, there is no joint seam (not shown) between the first extension portion 121 and the second extension portion 112, thereby improving the overall aesthetics of the display device 100.

[0055] Specifically, the backlight module 30 is edge-lit, and the light bar 33 is disposed on the inner surface of the first extension portion 121. Specifically, the light-emitting substrate 331 is positioned flush with the first extension portion 121 and secured to the first extension portion 121 by welding using a first welding structure 40. The light-emitting unit 332 emits light in a direction parallel to the light-emitting surface 24 and the first main portion 122. The first welding structure 40 is disposed in a non-perpendicular direction to the light-emitting unit 332. For example, if the light-emitting unit 332 emits light in a first direction, the first welding structure 40 is also disposed in the first direction, where the first direction is perpendicular to the light-emitting surface 24. The number of first welding structures 40 can be adjusted based on the specific size of the display device 100. For example, each individual light bar 33 can be provided with one to three first welding structures 40, ensuring both securing the light-emitting substrate 331 to the first extension portion 121 and the aesthetically pleasing appearance of the display device 100.

[0056] In the second embodiment provided in this application:

[0057] like Figure 4 As shown, the first extension portion 121 is located on the inner side of the second extension portion 112, and the second extension portion 112 is connected to the second main body portion 111 and is located on the outer side of the first extension portion 121, so that when the display device 100 is viewed from the front, there is no splicing seam structure between the first extension portion 121 and the second extension portion 112, thereby improving the overall aesthetics of the display device 100.

[0058] Specifically, the backlight module 30 is a direct-down type, and the side of the light-emitting substrate 331 away from the light-emitting unit 332 is fixed to the first body portion 122 through the first welding structure 40. Figure 3 and Figure 4 As shown, the light emitting substrate 331 is attached to the first main body portion 122 , and the light emitting substrate 331 is fixed to the first extension portion 121 by welding through the first welding structure 40 .

[0059] In this embodiment, the projection of the first welding structure 40 along the first direction can be staggered with the display panel 20, thereby preventing the first welding structure 40 from damaging the circuit in the display panel 20 in the first direction. For example, in a specific embodiment, the non-display area 102 of the second substrate 22 has a gate drive circuit (GOA drive circuit 123); the projection of the first welding structure 40 on the second substrate 22 is staggered with the gate drive circuit, that is, in Figure 2 and Figure 3 In the first direction indicated in FIG, the first welding structure 40 and the GOA driving circuit 123 are staggered.

[0060] In the display device 100 structure provided in the first and second embodiments, the display device 100 may further include a middle frame 13, which is at least partially disposed on a side surface of the display panel 20. The middle frame 13 includes a third main portion 131 and a third extension portion 132, which are interconnected. The third main portion 131 is spaced apart from the first main portion 122 at an end proximal to the light bar 33, thereby forming an accommodating groove 50 for accommodating the light bar 33. The third extension portion 132 extends from an end of the third main portion 131 distal to the second main portion 111 in a direction away from the first extension portion 121. The third main portion 131 is spaced apart from the backlight module 30 as projected along the second direction. That is, the end of the third main portion 131 distal to the second main portion 111 does not extend to the first main portion 122, but rather has a gap (not shown) between it and the first main portion 122. This gap can be considered as a hollowing design between the third main body portion 131 and the first main body portion 122 of the middle frame 13, thereby avoiding the area where the light bar 33 is located, so that the light bar 33 can be directly welded to the back plate 12, saving backlight space, and thus achieving a narrow-frame display effect.

[0061] The third main body portion 131 and the first extension portion 121 can be fitted together and can be further fixed by welding or gluing. The end of the third extension portion 132 away from the third main body portion 131 abuts against the side of the display panel 20 close to the backlight module 30. For example, it can be supported on the bottom of the polarizer 23 at the bottom of the display panel 20 to provide support. At the same time, the light-emitting unit 332 can be spaced apart from the third extension portion 132 and the third main body portion 131 to form a second gap 52, such as Figure 7 As shown, the second gap 52 can ensure the welding effect of the light-emitting substrate 331 and the back plate 12, and prevent the heat generated by the long-term light-emitting unit 332 from damaging the reflective layer 32, the optical film 31, the third main body 131, the third extension part 132 and other components, thereby ensuring process safety and product yield.

[0062] The second direction is parallel to the light emitting surface 24 , and is perpendicular to the first direction.

[0063] In the display device 100 structures provided in the first and second embodiments, as Figures 2 to 4 As shown, the backlight module 30 may further include: a reflective layer 32 and an optical film 31, which are sequentially arranged on the inner surface of the first body portion 122. The light emitting unit 332 and the reflective layer 32 and the optical film 31 are spaced apart to form a first gap 51, as shown in FIG. Figure 7As shown, for example, the spacing of the first gap 51 can be greater than or equal to 200μm and less than or equal to 300μm, such as 200μm, 220μm, 250μm, 280μm, 300μm, etc. This can not only ensure the welding effect between the light-emitting substrate 331 and the back panel 12, but also prevent the heat generated by the long-term light emission of the light-emitting unit 332 from damaging components such as the reflective layer 32 and the optical film 31, thereby ensuring process safety and product yield. The projection of the first welding structure 40 along the second direction is located on the side of the optical film 31, that is, the first welding structure 40 and the optical film 31 can partially overlap in the second direction. Among them, the width of the first welding structure 40 is not less than 150μm, thereby ensuring the welding effect between the light-emitting substrate 331 and the front frame 11 or the back panel 12.

[0064] In the third embodiment provided in this application:

[0065] like Figure 5 As shown, in this embodiment, the first extension portion 121 is located on the inner side of the second extension portion 112; so that when viewed from the front of the display device 100, there is no joint seam between the first extension portion 121 and the second extension portion 112, thereby improving the aesthetics. In this embodiment, the backlight module 30 is a direct-down type, and the side of the light-emitting substrate 331 away from the light-emitting unit 332 is fixed to the first main body portion 122 by a first welding structure 40. Unlike the above two embodiments, the number of light bars 33 in this embodiment can be multiple, and the light bar 33 can be a strip-shaped light bar 33, and multiple light-emitting units 332 can be arranged at intervals on each strip-shaped light bar 33. Among them, the light-emitting substrate 331 of each light bar 33 is fixed to the first main body portion 122 respectively by a first welding structure 40. And multiple strip light strips 33 can be continuously arranged on the inner surface of the first main body part 122. It can be understood that by setting the strip light strips 33, the fixing work between adjacent light strips 33 can be reduced. At the same time, multiple first welding structures 40, such as three to five, can be set between the light-emitting substrate 331 of each strip light strip 33 and the first main body part 122, thereby improving the connection stability between the light strip 33 and the back panel 12; adjacent strip light strips 33 can also be fixed by welding or gluing.

[0066] Adjacent light bars 33 are arranged at intervals or the light emitting units 332 are isolated and fixed by the encapsulation layer 34 .

[0067] Specifically, in the first structure of this embodiment, Figure 5As shown, adjacent light strips 33 isolate and fix the light-emitting units 332 through the encapsulation layer 34. The encapsulation layer 34 can be made of materials such as resin. The resin encapsulation can not only ensure the brightness of the light-emitting unit 332, but also dissipate the heat of the light-emitting unit 332 through the resin; at the same time, the resin can form a support for the light-emitting unit 332, so that the light-emitting unit 332 can resist external impact and vibration, so as to waterproof, moisture-proof, and fix the light-emitting unit 332, thereby improving the durability of the light-emitting unit 332.

[0068] In the second structure of this embodiment, Figure 6 As shown, there are multiple light strips 33, and adjacent light strips 33 can be arranged at intervals, and each light strip 33 can include a light-emitting unit 332. The light-emitting substrate 331 of each light strip 33 can be fixed to the first main body part 122 separately, specifically by setting one to three first welding structures 40 between each light-emitting substrate 331 and the first main body part 122 for fixation.

[0069] In the third embodiment, Figure 5 and Figure 6 As shown, the display device 100 may further include: an optical film 31 and a middle frame 13. The optical film 31 is disposed on a side of the display panel 20 near the first main portion 122. The middle frame 13 is at least partially disposed on the side of the display panel 20. The middle frame 13 includes: a third main portion 131 and a third extension portion 132 connected to each other. The ends of the third main portion 131 respectively abut against the first main portion 122 and the second main portion 111. That is, in this embodiment, the third main portion 131 extends to contact the first main portion 122. The third extension portion 132 extends from a side of the third main portion 131 away from the first extension portion 121 along the second direction. Specifically, it can extend from the middle position of the third main portion 131 toward a side away from the first extension portion 121 along the second direction. The end of the third extension portion 132 away from the third main portion 131 abuts against a side of the display panel 20 near the backlight module 30 to provide support.

[0070] In this embodiment, the third extension portion 132 abuts against the surface of the optical film 31 near the first body portion 122 to form support therefor; the projection of the third body portion 131 along the second direction at least partially covers the light bar 33. Since the reflective layer 32 and the optical film 31 in this embodiment are both arranged on the side of the display panel 20 near the backlight module 30, and are spaced apart from the light-emitting units 332 of the light bar 33 by the third extension portion 132, the third body portion 131 can extend to the first body portion 122. The third body portion 131 and the third extension portion 132 are both spaced apart from the plurality of light bars 33 to form a second gap 52, as shown in FIG. Figure 7As shown, this ensures the welding effect of the light-emitting substrate 331 and the back plate 12, and prevents the heat generated by the long-term light emission of the light-emitting unit 332 from damaging the reflective layer 32, the optical film 31, and the third body portion 131 and the third extension portion 132, thereby ensuring process safety and product yield. The second direction is parallel to the light-emitting surface 24 and perpendicular to the first body portion 122.

[0071] In one embodiment, if Figures 2 to 6 As shown, the display device 100 may further include a coating layer 71 or a sandblasting layer 72. The coating layer 71 is disposed on the outer surface of the housing 10; the sandblasting layer 72 is disposed on the outer surface of the housing 10. It is understood that the coating layer 71 or the sandblasting layer 72 can be used to cover the first weld structure 40 formed during the laser welding process. Therefore, the coating layer 71 or the sandblasting layer 72 should at least cover the first weld structure 40 when viewed from multiple angles of the housing 10, and specifically, can cover the entire outer surface of the housing 10, thereby improving the aesthetics of the housing 10.

[0072] In addition, when the front frame 11 and back plate 12 are made of glass, the display panel 20 and other components within the backlight module 30 may be visible to the naked eye from the outside. Therefore, providing the coating layer 71 or the sandblasting layer 72 can also prevent the internal components from being exposed and affecting the aesthetics. It is understood that the coating layer 71, as an exterior component, can be coated with different colors according to the specific usage scenario.

[0073] In this embodiment, the sandblasting layer 72 can be formed by sandblasting, for example, using compressed air to spray abrasives (such as corundum, glass beads, etc.) at high speed onto the outer surface of the housing 10, thereby ensuring the appearance and texture of the display device 100. The choice of abrasive depends on the desired surface effect and material of the display device 100, and this application does not impose any specific restrictions on this.

[0074] In other embodiments, the display device 100 can also cover the first welding structure 40 and other components inside the display device 100 (such as circuits) through other roughening treatments so that they cannot be seen from the outside by the naked eye. For example, the surface of the shell 10 is polished to form a frosted texture, thereby covering the first welding structure 40 and other components inside the display device 100 and improving the overall texture of the shell 10.

[0075] See also Figures 8 and 9 , Figure 8 This is a schematic diagram of the structure of a light bar in the display device provided by this application; Figure 9 This is another structural schematic diagram of the light bar in the display device provided in this application.

[0076] In the above-mentioned first to third embodiments, as Figure 8As shown, the light bar 33 can be formed by splicing together a plurality of small-sized strip-shaped sub-light bars 330 having light-emitting units 332; or a light bar 33 formed by arranging a plurality of light-emitting units 332 on a whole light-emitting substrate 331, as shown in FIG. Figure 9 As shown. The light-emitting unit 332 can be an LED, mini LED, or micro LED, etc., and this application does not impose any restrictions on this. It is understood that whether it is a light bar 33 made of spliced ​​pieces or a light bar 33 made of a whole light-emitting substrate 331, it can be used in a direct-type backlight module 30 or an edge-type backlight module 30.

[0077] The display device disclosed in the embodiment of the present application includes: a housing, a backlight module and a display panel, the housing includes a front frame and a back panel; the display panel includes a first substrate and a second substrate; the backlight module includes a light bar, and the light bar includes a light-emitting substrate and a light-emitting unit; wherein the light-emitting substrate and the back panel are both made of glass, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the back panel through a welding structure; or, the light-emitting substrate and the front frame are both made of glass, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the front frame through a welding structure. The light-emitting substrate of the light bar is laser welded to the front frame or the back panel to improve the fixing effect. The embodiment of the present application directly welds the glass-based light bar to the back panel or the front frame through a welding structure, without manual assembly, thereby achieving the effect of improving yield and reducing labor costs; at the same time, the use of adhesive backing of the light bar is reduced, reducing material costs.

[0078] The above description is only an implementation method of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the description and drawings of this application, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A display device comprising a housing, a backlight module, and a display panel, wherein the housing comprises a front frame and a back plate; and the display panel comprises a first substrate and a second substrate. It is characterized in that The backlight module includes a light bar, and the light bar includes a light-emitting substrate and a light-emitting unit; Wherein, the light-emitting substrate and the back plate are both made of glass, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the back plate through a welding structure; or, The light-emitting substrate and the front frame are both made of glass, and a side of the light-emitting substrate away from the light-emitting unit is fixed to the front frame through a welding structure.

2. The display device according to claim 1, wherein The back plate includes a first main portion and a first extension portion connected to each other; the first main portion is arranged on a side of the backlight module away from the display panel, and the first extension portion extends from one end of the first main portion to the side of the display panel and the backlight module; The first substrate has a light-emitting surface; the front frame includes a second main body and a second extension, one end of the second main body is arranged on the light-emitting surface, and the second extension extends from the other end of the second main body to the side of the display panel and the backlight module; the second extension and the first extension are located on the inner side of the other; a first welding structure is formed between a side of the light-emitting substrate away from the light-emitting unit and the first extension or the second extension located on the inner side; or, a first welding structure is formed between a side of the light-emitting substrate away from the light-emitting unit and the first main body; wherein, the first welding structure does not penetrate the light-emitting substrate.

3. The display device according to claim 2, wherein: The first extension portion is located inside the second extension portion; wherein, The backlight module is of side-entry type, and the light bar is arranged on the inner surface of the first extension portion; the setting direction of the first welding structure is not perpendicular to the light emitting direction of the light emitting unit; the light emitting direction of the light emitting unit is parallel to the light emitting surface and parallel to the first main body.

4. The display device according to claim 2, wherein: The first extension portion is located inside the second extension portion; wherein, The backlight module is a direct-down type, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the first main body via the first welding structure; The projection of the first welding structure along a first direction is staggered with the display panel; and the first direction is perpendicular to the light emitting surface.

5. The display device according to claim 3 or 4, characterized in that Also includes: a middle frame, at least partially disposed on a side surface of the display panel; wherein the middle frame includes: A third main body portion and a third extension portion are connected to each other, and the third main body portion is spaced apart from the first main body portion at an end close to the light bar to form a receiving groove for accommodating the light bar, and the third extension portion extends from an end of the third main body portion away from the second main body portion toward a direction away from the second extension portion; wherein the projection of the third main body portion along the second direction is spaced apart from the backlight module; wherein the second direction is parallel to the light emitting surface.

6. The display device according to claim 5, wherein: The backlight module further includes: A reflective layer and an optical film are sequentially arranged on the inner surface of the first main body; wherein the light-emitting unit is spaced apart from the reflective layer and the optical film; and a projection of the first welding structure along the second direction is located on a side surface of the optical film; Wherein, the width of the first welding structure is not less than 150 μm.

7. The display device according to claim 2, wherein: The first extension portion is located inside the second extension portion; wherein, The backlight module is a direct-down type, and the side of the light-emitting substrate away from the light-emitting unit is fixed to the first main body via the first welding structure; There are multiple light strips, and the multiple light strips are all arranged on the inner surface of the first main body; adjacent light strips are arranged at intervals or the light-emitting units are isolated and fixed by an encapsulation layer, wherein the light-emitting substrate of each light strip is respectively fixed to the first main body by the first welding structure.

8. The display device according to claim 7, wherein: Also includes: an optical film, disposed on a side of the display panel close to the first main body; a middle frame, at least partially disposed on a side surface of the display panel; wherein the middle frame comprises: a third main portion and a third extending portion connected to each other, wherein two ends of the third main portion respectively abut against the first main portion and the second main portion, and the third extending portion extends along a second direction from a side of the third main portion away from the first extending portion; In which, the third extension portion abuts against the surface of the optical film close to the first main body portion; the projection of the third main body portion along the second direction at least partially covers the light strip; the third main body portion and the third extension portion are both spaced apart from the plurality of light strips; the second direction is parallel to the light emitting surface and perpendicular to the first main body portion.

9. The display device according to any one of claims 6 to 8, characterized in that: Also includes: a coating layer, disposed on the outer surface of the shell; or, The sandblasting layer is arranged on the outer surface of the shell.

10. The display device according to any one of claims 6 to 8, characterized in that The display panel includes an array substrate, an opposing substrate, and a liquid crystal layer disposed between the array substrate and the opposing substrate; the first substrate is the opposing substrate, and the second substrate is the array substrate.

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