Display device

Abstract

The invention discloses a display device, which comprises a shell, a display panel and a backlight module, and is characterized in that the shell comprises a front frame and a back plate; the display panel is provided with a display area and a non-display area; the display panel comprises a first substrate and a second substrate. Partial areas of the first substrate and the front frame are made of glass materials, and the glass material area of the non-display area of the first substrate and the glass material area of the front frame are fixed through a welding structure. According to the display device, the non-display area of the first substrate made of the glass material and the front frame and / or the front frame made of the glass material and the back plate are fixed through the laser welding structure, the waterproof performance of the display device is improved, and the high waterproof requirement for the display device during long-term operation in a high-humidity environment is met.

Description

Technical Field

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

[0002] In the related technology, in order to compete with the light emitting diode (LED) large-screen direct display industry, the liquid crystal display (LCD) industry has begun to continuously explore and innovate, and has produced many products with narrow bezels. The increasingly narrow bezels require extreme design changes to the previous panel structure, resulting in the narrowing of the sealing frame glue and the decrease in the anti-peel strength of the LCD panel, so that the waterproof sealing of the LCD panel cannot meet the requirements. Summary of the invention

[0003] In view of this, the present application provides a display device to solve the problem in the prior art that the waterproof sealing of the liquid crystal panel cannot meet the requirements.

[0004] In order to solve the above technical problems, the technical solution provided in the present application is: a display device is provided, comprising a shell, a display panel and a backlight module, the shell comprising a front frame and a back panel; the display panel has a display area and a non-display area; the display panel comprises a first substrate and a second substrate; both the first substrate and the front frame have partial areas made of glass material, and the glass material area of ​​the non-display area of ​​the first substrate and the glass material area of ​​the front frame are fixed by a welding structure.

[0005] In one embodiment, the first substrate has a light emitting surface; the welding structure includes a first welding structure; the first substrate and the front frame are both made of glass, and the front frame includes a first main body and a first extension portion that are connected to each other; one end of the first main body is arranged on the light emitting surface and forms the first welding structure with the first substrate, and the first extension portion extends from the other end of the first main body to the side of the display panel and the backlight module; wherein the first welding structure does not penetrate the first substrate.

[0006] In one embodiment, the front frame is only disposed on one side of the first substrate; the first welding structure is disposed in a strip shape in the non-display area and is spaced apart from the display area of ​​the first substrate; or

[0007] The front frame is arranged around the first substrate; the first welding structure is arranged in a ring shape in the non-display area and is spaced apart from the display area of ​​the first substrate.

[0008] In one embodiment, the width of the first welding structure is not less than 150 μm;

[0009] A distance between the first welding structure and the display area of ​​the first substrate is greater than or equal to 200 μm and less than or equal to 300 μm.

[0010] In one embodiment, the non-display area of ​​the second substrate has a gate driving circuit; and the projection of the first welding structure on the second substrate is staggered with the gate driving circuit.

[0011] In one embodiment, a partial area of ​​the back plate is made of glass material, and the glass area of ​​the front frame and the glass area of ​​the back plate are fixed by a welding structure.

[0012] In one embodiment, the front frame and the back plate are both made of glass, and the welding structure includes a second welding structure; the back plate includes a second main body portion and a second extension portion connected to each other; the second main body portion is arranged on a side of the backlight module away from the display panel, and the second extension portion extends from one end of the second main body portion to the side of the display panel and the backlight module, and one of the first extension portion and the second extension portion is located on the inner side of the other; wherein the second welding structure is formed between the first extension portion and the second extension portion, and the second welding structure does not penetrate the second extension portion and the one of the first extension portion that is relatively located on the inner side; wherein the width of the second welding structure is not less than 150μm.

[0013] In one embodiment, the second welding structure includes: a first sub-welding structure and a second sub-welding structure, the projection of the first sub-welding structure along the first direction is located on the side of the display panel; the projection of the second sub-welding structure in the first direction is located on the side of the second main body; the first direction is parallel to the light emitting surface and perpendicular to the front frame.

[0014] In one embodiment, the second extension portion is located on the inner side of the first extension portion; wherein the backlight module is of edge-entry type and includes a light bar, and the light bar is arranged on the inner surface of the second extension portion; the projection of the second welding structure along the first direction is offset from the light bar; the first direction is parallel to the light emitting surface and perpendicular to the front frame; or, the backlight module is of direct-down type and is spaced apart from the second extension portion.

[0015] In one embodiment, the display device further includes: a coating layer or a sandblasting layer, the coating layer is arranged on the outer surface of the shell; the sandblasting layer is arranged on the outer surface of the shell.

[0016] In one embodiment, 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.

[0017] Beneficial effects of the present application: Different from the prior art, the display device of the present application includes a housing, a display panel and a backlight module, the housing includes a front frame and a back plate; the display panel has a display area and a non-display area; the display panel includes a first substrate and a second substrate; both the first substrate and the front frame have a portion of glass material, and the glass material area of ​​the non-display area of ​​the first substrate and the glass material area of ​​the front frame are fixed by a welding structure. The present application uses a laser welding structure to fix the non-display area of ​​the first substrate made of glass to the front frame and / or the front frame made of glass to the back plate, thereby improving the waterproofness of the display device and meeting the high waterproof requirements for the display device when operating in a high-humidity environment for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 paying any creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure disassembly of the display device provided by the present application;

[0020] Figure 2 is a partial structural cross-sectional view of an edge-entry display device provided by an embodiment of the present application;

[0021] Figure 3 is a partial structural cross-sectional view of an edge-entry display device provided by another embodiment of the present application;

[0022] Figure 4 is a partial structural cross-sectional view of a direct-type display device provided by an embodiment of the present application;

[0023] Figure 5 is a partial structural cross-sectional view of a direct-type display device provided by another embodiment of the present application;

[0024] Figure 6 It is a partial structural schematic diagram of the borderless display device provided by the present application;

[0025] Figure 7 It is a partial structural schematic diagram of a bordered display device provided by the present application;

[0026] Figure 8 This application Figure 2 A schematic diagram of the structure of part B in the middle;

[0027] Fig. 9 is a structural schematic diagram of a first welding structure in the display device provided in the present application;

[0028] Fig.10 is another structural schematic diagram of the first welding structure in the display device provided in the present application;

[0029] Fig.11 It is a structural schematic diagram of a light bar in a display device provided by the present application;

[0030] Fig.12 is another structural schematic diagram of a light bar in a display device provided in the present application;

[0031] Fig.13 It is a top view of the welding structure of the display device in the related art provided by this application;

[0032] Fig.14 This application Fig.13 Schematic diagram of the enlarged structure of part C.

[0033] Description of reference numerals:

[0034] 100 / 200, display device; 101 / A, display area; 102, non-display area; 10, housing; 11, front frame; 111, first main body; 112, first extension; 12, back plate; 121, second extension; 122, second main body; 123, GOA driving circuit; 13, middle frame; 20, display panel; 21, first substrate; 22, second substrate; 21a / 201, opposite substrate; 22a / 202, array substrate; 23, polarizer; 231. Gap; 24. Light emitting surface; 25. Liquid crystal layer; 30. Backlight module; 31. Diffusion film; 32. Reflection sheet; 33. Light bar; 330. Sub-light bar; 331. Light board; 332. Light-emitting unit; 34. Insulating filling layer; 40. First welding structure; 50. Second welding structure; 51. First sub-welding structure; 52. Second sub-welding structure; 71. Coating layer; 72. Sandblasting layer; 80. Covering part; 205. Sealing frame glue; 60. Welding fixing structure. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technical workers in the field without making creative work are within the scope of protection of this application.

[0036] 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 indicated technical features. Thus, the features defined as "first" and "second" can expressly or implicitly include at least one of the features. All directional indications (such as up, down, left, right, front, back ...) in the embodiments of the present application are only used to explain the relative position relationship, movement conditions, etc. between the 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 comprising 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.

[0037] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0038] During the research process of this application, it was found that in order to compete with the LED (Light Emitting Diode) large-screen direct display industry, the LCD (Liquid Crystal Display) display industry has begun to continuously innovate and has produced many narrow-framed products. The increasingly narrow frame requires extreme design changes to the previous LCD panel structure, resulting in the narrowing of the sealing frame glue and the decrease in the peel strength of the LCD display panel. Therefore, how to effectively improve the peel strength of narrow-frame products is particularly important.

[0039] In response to the above problems, the research found that through femtosecond laser welding technology, without destroying the original LCD panel structure, the interface of the array substrate 202 and the opposite substrate 201 (such as a color film substrate) is instantly sintered by femtosecond laser to form a welding fixed structure 60 on the outside of the sealing frame glue 205 at the glass edge of the display area A (non-display area), achieving a welding effect to improve the peeling resistance between the glass substrates. Figure 13 to Figure 14 Laser welding is performed in the manner shown, and many displays in the display industry operate in a high-humidity environment for a long time, so there are relatively high requirements for the waterproofness of the entire display device 200. Based on this, the present application solves the problem of waterproofing the entire display device 200 through a laser welding structure.

[0040] See also Figures 1 to 5 , Figure 1 It is a schematic diagram of the overall structure disassembly of the display device provided by the present application; Figure 2 is a partial structural cross-sectional view of an edge-entry display device provided by an embodiment of the present application; Figure 3 is a partial structural cross-sectional view of an edge-entry display device provided by another embodiment of the present application; Figure 4 is a partial structural cross-sectional view of a direct-type display device provided by an embodiment of the present application; Figure 5 It is a partial structural cross-sectional view of a direct-type display device provided in another embodiment of the present application.

[0041] like Figure 1 As shown, the present application provides a display device 100, including a housing 10, a display panel 20 and a backlight module 30, and the housing 10 includes a front frame 11 and a back plate 12. Specifically, the housing 10 can be at least partially wrapped around the display panel 20 and the backlight module 30, so as to protect the display panel 20 and the backlight module 30, and also prevent the internal circuits (not shown) of the display panel 20 and the backlight module 30, the light-emitting unit 332, etc. from being exposed to the outside. 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 part of the screen that can display an image; the non-display area 102 includes the screen edge, the frame, etc., such as the front frame 11. The display panel 20 can be specifically a liquid crystal display panel 20.

[0042] like Figures 2 to 5 As shown, the display panel 20 includes a first substrate 21 and a second substrate 22; wherein the first substrate 21 and the second substrate 22 are arranged opposite to each other, and a liquid crystal layer 25 is arranged between the first substrate 21 and the second substrate 22. In addition, the housing 10 may further include a middle frame 13, which may be arranged on the side of the display panel 20 and between the display panel 20 and the backlight module 30; the middle frame 13 may be used to support the first substrate 21 and the second substrate 22, and also may prevent external light incident from the side from irradiating the liquid crystal layer 25.

[0043] In one embodiment, if Figures 2 to 5 As shown, the first substrate 21 has a light emitting surface 24. 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; wherein the opposing substrate 21a may be the above-mentioned first substrate 21, and the first substrate 21 may further be a color filter substrate, and the second substrate 22 may be the array substrate 22a, which is not limited in the present application.

[0044] The backlight module 30 may specifically include a light bar 33 , a reflective sheet 32 ​​, a diffusion film 31 and the like.

[0045] In one embodiment, the first substrate 21 and the front frame 11 are made of glass as a whole, and the non-display area 102 of the first substrate 21 and the front frame 11 are fixed by a welding structure (not shown).

[0046] In another embodiment, the first substrate 21 and the front frame 11 may have a portion of glass material, and the glass material region of the non-display area 102 of the first substrate 21 and the glass material region of the front frame 11 are fixed by a laser welding structure. For example, the first substrate 21 and the front frame 11 are made of plastic material, and glass for welding is embedded in the position where welding is required, so that the first substrate 21 and the glass material region of the front frame 11 can be welded.

[0047] In one embodiment, the front frame 11 and the back plate 12 are both made of glass, and the front frame 11 and the back plate 12 are fixed by a laser welding structure.

[0048] In another embodiment, a part of the front frame 11 or the back plate 12 may be made of glass, and the glass area of ​​the front frame 11 and the glass area of ​​the back plate 12 are fixed by a laser welding structure. For example, the front frame 11 or the back plate 12 is made of plastic material, and glass for welding is embedded in the position where welding is required, so that the glass area of ​​the front frame 11 or the back plate 12 can be welded.

[0049] In addition, in the embodiment provided in the present application, when the welding structure of the non-display area 102 of the first substrate 21 and the front frame 11 is fixed by laser welding, the first substrate 21 and the front frame 11 are both made of glass, so that under the irradiation of the laser, the glass at the position to be welded between the non-display area 102 of the first substrate 21 and the front frame 11 can be fused or solder can be provided at the position to be welded between the non-display area 102 of the first substrate 21 and the front frame 11 for sintering, thereby completing the laser welding fixation of the non-display area 102 of the first substrate 21 and the front frame 11. The material of the back plate 12 is not limited here, for example, the back plate 12 can be glass or transparent plastic.

[0050] Furthermore, the position to be welded between the non-display area 102 of the first substrate 21 and the front frame 11 can be directly irradiated with a laser to melt the position to be welded, cool and solidify, thereby forming a first welding structure 40 that connects and fixes the non-display area 102 of the first substrate 21 and the front frame 11.

[0051] In one embodiment, when the welding structure of the front frame 11 and the back plate 12 is fixed by laser welding, the front frame 11 and the back plate 12 are both made of glass, so that under the irradiation of the laser, the glass at the position to be welded between the front frame 11 and the back plate 12 can be fused or the solder set at the position to be welded between the front frame 11 and the back plate 12 can be fused, thereby completing the laser welding and fixing of the front frame 11 and the back plate 12. The material of the first substrate 21 is not limited here, for example, the first substrate 21 can be glass or transparent plastic.

[0052] Similarly, the position to be welded between the front frame 11 and the back plate 12 can be directly irradiated with a laser to melt the position to be welded, and after cooling and solidification, a second welding structure 50 can be formed to connect and fix the front frame 11 and the back plate 12.

[0053] In one embodiment, the solder may be an opaque pigment or glass fiber, and the solder is filled in the position to be welded between the non-display area 102 of the first substrate 21 and the front frame 11, which can increase the absorption rate of the laser, so that the solder can be melted after being irradiated by the laser and connected with the non-display area 102 of the first substrate 21 and the front frame 11. The process parameters can also be adjusted by a focusing lens, automatic focal length compensation, and a precision motion control system so that the gap between the non-display area 102 of the first substrate 21 and the front frame 11 is not less than a preset distance, for example, 1.5 μm to 2 μm.

[0054] In one embodiment, femtosecond laser welding technology can be used for the laser welding of the welding structure between the non-display area 102 of the first substrate 21 and the front frame 11, and / or the welding structure between the front frame 11 and the back plate 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 anti-peeling strength between the glass front frame 11 and the glass substrate, or the glass front frame 11 and the glass back plate 12, and improving the overall waterproof effect of the display device 100.

[0055] like Figures 2 to 5As shown, in one embodiment, the welding structure includes a first welding structure 40; the first substrate 21 and the front frame 11 are made of glass as a whole, and the front frame 11 may include a first main body 111 and a first extension 112 connected to each other; the first main body 111 and the first extension 112 may be welded, bonded or integrated structures, and in this embodiment, an integrated structure is preferred, so as to improve the waterproof effect of the housing 10 of the display device 100. One end of the first main body 111 is arranged on the light emitting surface 24 of the first substrate 21 and forms a first welding structure 40 with the first substrate 21; the first extension 112 extends from the other end of the first main body 111 to the side of the display panel 20 and the backlight module 30. It can be understood that the first main body 111 includes a first end and a second end located at two ends, the first welding structure 40 is located at the first end, and the first extension 112 is located at the second end. Among them, the first welding structure 40 does not penetrate the first substrate 21. Since the second substrate 22 is arranged on the side of the first substrate 21 away from the first welding structure 40, the first welding structure 40 is arranged not to penetrate the first substrate 21, which can prevent the first welding structure 40 from affecting the second substrate 22. For example, the high temperature generated during laser welding may affect the circuit arranged in the second substrate 22.

[0056] See also Figure 6 to Figure 7 , Figure 6 It is a partial structural schematic diagram of the borderless display device provided by the present application; Figure 7 It is a partial structural schematic diagram of a bordered display device provided in the present application.

[0057] In one embodiment, if Figure 6 As shown, the front frame 11 is only disposed on one side of the first substrate 21 ; the first welding structure 40 is disposed in a strip shape in the non-display area 102 and is spaced apart from the display area 101 of the first substrate 21 .

[0058] Specifically, for example, the display device 100 is a frameless structure, and the display device 100 has only one front frame 11. The first welding structure 40 is arranged in a strip shape in the non-display area 102 of the first substrate 21. The strip-shaped first welding structure 40 can be a whole continuous strip welding structure, or it can be composed of a plurality of sub-strip welding structures with intervals. In this embodiment, in order to improve the waterproof sealing effect of the first welding structure 40 on the non-display area 102 of the first substrate 21 and the front frame 11, the first welding structure 40 is prepared as a whole continuous strip welding structure. The first welding structure 40 is spaced apart from the display area 101 of the first substrate 21 to prevent burning of other components of the display area 101, such as the polarizer 23.

[0059] In another embodiment, if Figure 7As shown, the front frame 11 is arranged around the first substrate 21 ; the first welding structure 40 is arranged in a ring shape in the non-display area 102 , and is spaced apart from the display area 101 of the first substrate 21 .

[0060] Specifically, for example, the display device 100 is a frame structure, and the front frame 11 of the display device 100 is arranged around the first substrate 21. At this time, the first welding structure 40 can be arranged in a ring shape around the display area 101 of the entire first substrate 21, and is spaced from the display area 101 of the first substrate 21, so as to prevent burning of other components of the display area 101, such as the polarizer 23. In the embodiment, in order to improve the waterproof sealing effect of the first welding structure 40 on the non-display area 102 of the first substrate 21 and the front frame 11, the first welding structure 40 is preferably a whole continuous ring welding structure.

[0061] In any of the above embodiments, the width of the first welding structure 40 is not less than 150 μm, so as to ensure the welding effect between the non-display area 102 of the first substrate 21 and the front frame 11 .

[0062] In any of the above embodiments, the spacing between the first welding structure 40 and the display area 101 of the first substrate 21 may be greater than or equal to 200 μm and less than or equal to 300 μm, such as 200 μm, 220 μm, 250 μm, 280 μm, 300 μm, etc. This can ensure the welding effect between the non-display area 102 of the first substrate 21 and the front frame 11, prevent burning of other components in the display area 101, and ensure process safety and product yield.

[0063] In one embodiment, if Figures 2 to 5 As shown, the front frame 11 and the back plate 12 are both made of glass, and the back plate 12 may include a second main body 122 and a second extension 121 connected to each other; the second main body 122 and the second extension 121 may be welded, bonded or integrated structures, and in this embodiment, an integrated structure is preferred, so as to improve the waterproof effect and aesthetics of the housing 10 of the display device 100. The second main body 122 is arranged on the side of the backlight module 30 away from the display panel 20, and the second extension 121 extends from one end of the second main body 122 to the side of the display panel 20 and the backlight module 30, and one of the first extension 112 and the second extension 121 is located on the inner side of the other. The inner side here can be understood as the side relatively close to the display panel 20 and the backlight module 30.

[0064] In one embodiment, the welding structure includes a second welding structure 50. Specifically, the second welding structure 50 is formed between the first extension portion 112 and the second extension portion 121, and the second welding structure 50 does not penetrate the second extension portion 121 and the first extension portion 112 that are relatively located on the inner side. For example, when the first extension portion 112 is located on the inner side, the second welding structure 50 does not penetrate the first extension portion 112; or, when the second extension portion 121 is located on the inner side, the second welding structure 50 does not penetrate the second extension portion 121. The width of the second welding structure 50 is not less than 150 μm, so as to ensure the welding effect of the front frame 11 and the back plate 12.

[0065] In one embodiment, the second welding structure 50 may include: a first sub-welding structure 51 and a second sub-welding structure 52. Specifically, the first sub-welding structure 51 and the second sub-welding structure 52 are both located between the first extension portion 112 and the second extension portion 121, and neither penetrates the second extension portion 121 or the first extension portion 112 which is relatively closer to the display panel 20 and the backlight module 30. The projection of the first sub-welding structure 51 along the first direction is located on the side of the display panel 20, and the projection of the second sub-welding structure 52 along the first direction is located on the side of the second body portion 122; wherein the first direction is parallel to the light emitting surface 24 and perpendicular to the front frame 11, specifically perpendicular to the first extension portion 112.

[0066] In a specific embodiment, the second extension portion 121 is located inside the first extension portion 112 , so that when viewed from the front of the display device 100 , there is no splicing structure between the first body portion 111 and the second extension portion 121 , thereby improving the aesthetics.

[0067] First embodiment:

[0068] like Figures 2 to 3 As shown, the backlight module 30 can be a side-entry type and includes a light bar 33, and the light bar 33 is arranged on the inner surface of the second extension portion 121; the light bar 33 can include a light board 331 and a light-emitting unit 332 arranged on the light board 331. The projection of the second welding structure 50 along the first direction is staggered with the light bar 33. It can be understood that the projection of the second welding structure 50 in the first direction can be located on the side of the second main body portion 122, or on the side of the display panel 20, but it needs to avoid the side of the light bar 33, so as to prevent the high temperature generated during the welding process from affecting the light bar 33, and further prevent the light-emitting effect of the light-emitting unit 332 on the light bar 33 from being affected. Among them, the first direction is parallel to the light-emitting surface 24 and perpendicular to the front frame 11, specifically perpendicular to the first extension portion 112.

[0069] Second embodiment:

[0070] like Figures 4 to 5As shown, the backlight module 30 can also be a direct-down type, and the backlight module 30 as a whole can be spaced apart from the second extension portion 121 to prevent the high temperature from affecting the light bar 33 of the backlight module 30 during the formation of the second welding structure 50. In the direct-down type backlight module 30, a plurality of light-emitting units 332 arranged in parallel can be encapsulated by an insulating filling layer 34 to waterproof, moisture-proof, and fix the light-emitting units 332. The insulating filling 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 support the light-emitting unit 332, so that the light-emitting unit 332 can resist external impact and vibration, thereby improving the durability of the light-emitting unit 332.

[0071] In one embodiment, if Figures 2 to 5 As shown, the display device 100 may further include a coating layer 71 or a sandblasting layer 72, wherein the coating layer 71 is disposed on the outer surface of the housing 10; and 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 may be used to cover the first welding structure 40 and the second welding structure 50 formed during the laser welding process, so the coating layer 71 or the sandblasting layer 72 should at least be able to cover the first welding structure 40 and the second welding structure 50 from multiple angles of the housing 10, preferably covering the entire outer surface of the housing 10, thereby improving the aesthetics of the housing 10. In addition, when the front frame 11 and the back plate 12 are made of glass, other components in the display panel 20 and the backlight module 30 may be visible to the naked eye from the outside, so by providing the coating layer 71 or the sandblasting layer 72, the problem of internal components being exposed and affecting the aesthetics can also be prevented. It is understood that the coating layer 71 as an appearance part can be coated with different colors according to the specific usage scenario requirements.

[0072] 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 selection of abrasives depends on the surface effect and material required by the display device 100, and the present application does not impose any specific restrictions on this.

[0073] In other embodiments, the display device 100 can also use other roughening treatments to cover the first welding structure 40, the second welding structure 50 and other components inside the display device 100 (such as circuits) 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, the second welding structure 50 and other components inside the display device 100 and improving the overall texture of the shell 10.

[0074] See also Figures 8 to 10 , Figure 8 This application Figure 2 A schematic diagram of the structure of part B in the middle; Fig. 9 is a structural schematic diagram of a first welding structure in the display device provided in the present application; Fig.10 This is another structural schematic diagram of the first welding structure in the display device provided in the present application.

[0075] Please refer to Figure 2 , Figures 8 to 10 In one embodiment, the non-display area 102 of the second substrate 22 has a gate driving circuit (GOA driving circuit 123); the projection of the first welding structure 40 on the second substrate 22 is staggered with the gate driving circuit, that is, Figure 2 In the second direction indicated in FIG. 1 , the first welding structure 40 and the GOA driving circuit 123 are staggered.

[0076] At the same time, in order to prevent the high temperature generated during the formation of the first welding structure 40 from damaging the polarizer 23, the polarizer 23 and the first body portion 111 also need to be spaced apart, for example Figure 8 The specific spacing distance between the polarizer 23 and the first body portion 111 can be set as needed, and this application does not limit this.

[0077] Accordingly, if Figure 8 As shown, due to the formation of the above-mentioned gap 231, before forming the coating layer 71 or the sandblasting layer 72 on the outer surface of the housing 10, a covering portion 80 can be firstly provided on the surface of the portion of the polarizer 23 located in the non-display area 102 away from the first substrate and the gap 231 to cover the gap 231 and improve the waterproof effect. Then, the coating layer 71 or the sandblasting layer 72 is provided in the above-mentioned manner, and the first body portion 111 and the covering portion 80 are simultaneously covered by the coating layer 71 or the sandblasting layer 72 to improve the overall aesthetics and waterproofness of the display device 100.

[0078] like Figures 9 and 10 As shown, since the GOA driving circuit 123 is disposed on the second substrate 22, the first welding structure 40 is configured not to penetrate the first substrate 21 during the formation process to prevent the GOA driving circuit 123 of the second substrate 22 from being burned; on the other hand, since high temperature is generated during laser welding, the projection of the first welding structure 40 on the second substrate 22 is misaligned with the GOA driving circuit 123 to further prevent the high temperature generated during laser welding from affecting the GOA driving circuit 123 of the second substrate 22. For example, the first welding structure 40 can be in a strip shape and integrally disposed on one side of the second substrate 22 ( Fig. 9 The second substrate 22 is not shown in the figure, the second substrate is located below the first substrate 21 and is blocked by the first substrate 21), and is spaced apart from the GOA driving circuit 123, such as Fig. 9 As shown. Or, as Fig.10 As shown, the first welding structure 40 can be arranged on one side of the second substrate 22, semi-surrounding the GOA driving circuit 123, and spaced apart from the GOA driving circuit 123. The spacing between the first welding structure 40 and the GOA driving circuit 123 can also be greater than or equal to 200μm and less than or equal to 300μm, such as 200μm, 220μm, 250μm, 280μm, 300μm, etc., which can be selected according to needs. The projection of the first welding structure 40 on the second substrate 22 and the misalignment of the gate driving circuit can not only ensure the welding effect of the non-display area 102 of the first substrate 21 and the front frame 11, but also prevent the GOA driving circuit 123 of the second substrate 22 from being burned, thereby ensuring process safety and product yield.

[0079] See also Figure 11 to Figure 12 , Fig.11 It is a structural schematic diagram of a light bar in a display device provided by the present application; Fig.12 This is another structural schematic diagram of the light bar in the display device provided in this application.

[0080] In the first and second embodiments described above, Fig.11 As shown, the light bar 33 may be formed by splicing 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 board 331, such as Fig.12 As shown. The light-emitting unit 332 can be LED, mini LED or micro LED, etc., and this application does not limit this. It can be understood that whether it is a light bar 33 made of spliced ​​pieces or a light bar 33 made of a whole light board 331, it can be used for a direct-type backlight module 30 or a side-entry backlight module 30.

[0081] The display device disclosed in the present application includes a housing, a display panel and a backlight module, the housing includes a front frame and a back plate; the display panel has a display area and a non-display area; the display panel includes a first substrate and a second substrate; the first substrate and the front frame are both made of glass, and the glass area of ​​the non-display area of ​​the first substrate and the glass area of ​​the front frame are fixed by a welding structure. The present application uses a laser welding structure to fix the non-display area of ​​the first substrate made of glass to the front frame and / or the front frame made of glass to the back plate, thereby improving the waterproofness of the display device and meeting the high waterproof requirements for the display device when operating in a high humidity environment for a long time.

[0082] 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 present application specification and drawings, or directly or indirectly used 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 display panel and a backlight module, wherein the housing comprises a front frame and a back plate; the display panel has a display area and a non-display area; the display panel comprises a first substrate and a second substrate; It is characterized in that Part of the first substrate and the front frame are made of glass, and the glass area in the non-display region of the first substrate and the glass area of ​​the front frame are fixed by a welding structure.

2. The display device according to claim 1, characterized in that The first substrate has a light emitting surface; the welding structure includes a first welding structure; The first substrate and the front frame are both made of glass, and the front frame includes a first main body and a first extension portion that are connected to each other; one end of the first main body is arranged on the light-emitting surface and forms the first welding structure with the first substrate, and the first extension portion extends from the other end of the first main body to the sides of the display panel and the backlight module; wherein the first welding structure does not penetrate the first substrate.

3. The display device according to claim 2, characterized in that: The front frame is only arranged on one side of the first substrate; the first welding structure is arranged in a strip shape in the non-display area and is spaced apart from the display area of ​​the first substrate; or The front frame is arranged around the first substrate; the first welding structure is arranged in a ring shape in the non-display area and is spaced apart from the display area of ​​the first substrate.

4. The display device according to claim 2, characterized in that: The width of the first welding structure is not less than 150 μm; A distance between the first welding structure and the display area of ​​the first substrate is greater than or equal to 200 μm and less than or equal to 300 μm.

5. The display device according to claim 2, characterized in that: The non-display area of ​​the second substrate has a gate driving circuit; the projection of the first welding structure on the second substrate is staggered with the gate driving circuit.

6. The display device according to claim 2, characterized in that: Part of the back plate is made of glass, and the glass area of ​​the front frame and the glass area of ​​the back plate are fixed by a welding structure.

7. The display device according to claim 6, characterized in that: The front frame and the back plate are both made of glass, and the welding structure includes a second welding structure; The back plate comprises a second main body portion and a second extension portion connected to each other; the second main body portion is arranged on a side of the backlight module away from the display panel, the second extension portion extends from one end of the second main body portion to the side of the display panel and the backlight module, and one of the first extension portion and the second extension portion is located inside the other; wherein the second welding structure is formed between the first extension portion and the second extension portion, and the second welding structure does not penetrate the relatively inside one of the second extension portion and the first extension portion; Wherein, the width of the second welding structure is not less than 150 μm.

8. The display device according to claim 7, characterized in that: The second welding structure comprises: a first sub-welding structure, wherein a projection of the first sub-welding structure along a first direction is located at a side surface of the display panel; A second sub-welding structure, wherein a projection of the second sub-welding structure in a first direction is located on a side surface of the second main body portion; the first direction is parallel to the light emitting surface and perpendicular to the front frame.

9. The display device according to claim 7, characterized in that: The second extension portion is located inside the first extension portion; wherein, The backlight module is of side-entry type and includes a light bar, which is arranged on the inner surface of the second extension portion; the projection of the second welding structure along the first direction is staggered with the light bar; the first direction is parallel to the light emitting surface and perpendicular to the front frame; or, The backlight module is of a direct-down type and is spaced apart from the second extending portion.

10. The display device according to any one of claims 1 to 8, characterized in that: The display panel includes an array substrate, an opposing substrate, and a liquid crystal layer arranged 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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