Narrow frame display module and display device

Abstract

A narrow-frame display module and a display device, wherein the narrow-frame display module includes: a backlight assembly, a TFT assembly and a cover plate from bottom to top. The backlight assembly includes a backlight source and a backlight frame for accommodating the backlight source; the backlight frame includes a accommodating portion and an outer edge portion; the main body of the accommodating portion is in the shape of an open box that opens upward; the outer edge portion extends outward from the outer edge of the upper opening of the open box to form a frame structure around the outer periphery of the upper opening; the upper surface of the frame structure is bonded to the lower surface of the cover plate through an adhesive layer; and the frame thickness of the frame structure is less than the height of the open box, so that in the assembled state, the display module is embedded in the corresponding display device and connected to the display device through the lower surface of the frame structure. The narrow-frame display module of the present application can improve the reliability of the bonding between the backlight frame and the cover plate, which can not only effectively prevent it from falling off during use, but also help to improve the shock resistance and dustproof ability.

Description

Technical Field

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

[0002] As user demands increase, narrow-frame TFT (Thin Film Transistor) LCD screens are becoming more popular due to their advantages of improving aesthetics and saving space. In the related technologies of narrow-frame display screens, after the frame of the cover plate becomes narrower, the frame of the backlight frame needs to be narrowed accordingly. However, this makes the frame width of the backlight frame too small, and the double-sided adhesive cannot be cut and attached, resulting in low reliability of bonding between the backlight frame and the cover plate, which makes it easy to fall off during use, and affects the earthquake resistance and dustproof capabilities.

[0003] Based on this, how to design a narrow-frame display module to improve the reliability of bonding between the backlight frame and the cover plate has become an urgent problem to be solved. Summary of the invention

[0004] In order to solve at least one problem existing in the prior art, the purpose of the present application is to provide a narrow-border display module and display device, which can improve the reliability of the bonding between the backlight frame and the cover plate, not only effectively prevent it from falling off during use, but also help to improve the shock resistance and dust resistance.

[0005] To achieve the above-mentioned purpose, the narrow-frame display module provided in the present application includes a backlight assembly, a TFT assembly and a cover plate from bottom to top;

[0006] Wherein, the backlight assembly comprises a backlight source and a backlight frame accommodating the backlight source;

[0007] The backlight frame comprises a receiving portion and an outer edge portion; the main body of the receiving portion is in the shape of an open box opening upward; the outer edge portion extends outward from the outer edge of the upper opening of the open box to form a frame structure around the upper opening; the upper surface of the frame structure is bonded to the lower surface of the cover plate through an adhesive layer;

[0008] Furthermore, the frame thickness of the frame structure is smaller than the height of the opening box.

[0009] Preferably, the frame width of the frame structure is in the range of 6mm-7mm;

[0010] The frame thickness of the frame structure ranges from 0.5mm to 2mm.

[0011] Preferably, the outer edge of the cover plate protrudes from the outer edge of the outer edge portion, and the protrusion size ranges from 0.1 mm to 0.2 mm.

[0012] Preferably, the TFT assembly includes an FPC, and one end of the FPC is connected to the TFT assembly;

[0013] The outer edge portion is also provided with a clearance structure for allowing the other end of the FPC to pass through the clearance structure to the outside of the display module.

[0014] Further preferably, the giving way structure is a giving way through hole; the giving way through hole is arranged along a partial section of a connecting side between the outer edge portion and the accommodating portion.

[0015] Preferably, the easing structure is a easing groove on the outer edge; the easing groove is arranged along a partial section of the outer edge of the upper opening of the accommodating portion;

[0016] The backlight frame also includes a leveling block; the leveling block is connected to the two ends of the outer edge portion forming the clearance groove; and the inner side edge of the leveling block, the outer edge portion and the accommodating portion define a through hole for the FPC to pass through, and the outer side edge of the leveling block and the outer edge portion form a leveling structure.

[0017] Further preferably, the leveling block is bonded or detachably connected to the backlight frame.

[0018] Preferably, the TFT assembly comprises, from bottom to top, a lower polarizer, a lower glass, a liquid crystal layer, an upper glass and an upper polarizer; wherein the upper polarizer is bonded to the lower surface of the cover plate by bonding adhesive.

[0019] Preferably, the backlight frame is an elastic material backlight frame with an integrally formed structure.

[0020] To achieve the above-mentioned purpose, the present application also provides a display device, including: the narrow-frame display module as described above.

[0021] In the narrow-frame display module and display device of the present application, for the backlight frame, an outer edge portion extending outward from the outer edge of the upper opening of the accommodating portion can be provided, so that the upper surface of the outer edge portion can be used to provide a sufficient bonding surface for firmly bonding the backlight assembly to the cover plate. In this way, the reliability of bonding between the backlight frame and the cover plate can be improved, which can not only effectively prevent the backlight frame from falling off during use, but also help to improve the shock resistance and dust resistance.

[0022] Furthermore, by forming a step structure between the lower surface of the outer edge portion and the opening box, the display module can be embedded in the corresponding display device in the assembled state, and the lower surface of the outer edge portion provides a sufficient bonding surface for firmly bonding the display module to the display device, thereby helping to improve the stability of the connection with the display device.

[0023] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings:

[0025] Figure 1 is a cross-sectional view of a narrow-frame display module according to an embodiment of the present application;

[0026] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0027] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0028] Figure 4 is a top view of a backlight frame according to an embodiment of the present application;

[0029] Figure 5 for Figure 4 A top view of a backlight frame containing a TFT assembly;

[0030] Figure 6 for Figure 5 Bottom view of the middle backlight frame;

[0031] Figure 7 is a top view of a backlight frame according to another embodiment of the present application;

[0032] Figure 8 for Figure 7 A top view of the backlight frame housing the TFT assembly.

[0033] Specifically, the following reference numerals are included:

[0034] Display module 100; backlight assembly 10; backlight frame 12; accommodating portion 13; outer edge portion 14; upper surface of the outer edge portion 15; lower surface of the outer edge portion 16; clearance through hole 17; clearance groove 18; step structure 19; TFT assembly 20; FPC 21; lower polarizer 22; lower glass 23; upper glass 24; upper polarizer 25; cover plate 30; adhesive layer 40; leveling block 50; bonding adhesive 60. DETAILED DESCRIPTION

[0035] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0036] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0037] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0038] like Figure 1-Figure 8 As shown, the narrow-frame display module 100 includes, from bottom to top, a backlight assembly 10, a TFT assembly 20 and a cover plate 30. The backlight assembly 10 includes a backlight source (not shown in the figure) and a backlight frame 12 for accommodating the backlight source.

[0039] The backlight frame 12 includes a receiving portion 13 and an outer edge portion 14; the main body of the receiving portion 13 is in the shape of an open box that opens upward; the outer edge portion 14 extends outward from the outer edge of the upper opening of the open box to form a frame structure around the outer periphery of the upper opening; the upper surface 15 of the outer edge portion is bonded to the lower surface of the cover plate 30 through an adhesive layer 40.

[0040] In a specific example, the adhesive layer 40 may be a double-sided adhesive. It is understandable that the adhesive layer may also be other types of applicable adhesive layers, and the present application does not impose any specific limitation on this.

[0041] Furthermore, the frame thickness T of the frame structure is less than the height of the opening box, and the lower surface 16 of the outer edge portion and the opening box form a step structure 19, so that in the assembled state, the display module 100 can be embedded in the corresponding display device and connected to the display device through the lower surface 16 of the outer edge portion. In a specific example, it can be bonded to the display device through the lower surface 16 of the outer edge portion.

[0042] According to the narrow-frame display module provided by the embodiment of the present application, for the backlight frame 12, by providing an outer edge portion 14 extending outward from the outer edge of the upper opening of the accommodating portion 13, the upper surface of the outer edge portion 14 can be used to provide a sufficient bonding surface for firmly bonding the backlight assembly 10 to the cover plate 30. In this way, the reliability of bonding between the backlight frame 12 and the cover plate 30 can be improved, which can not only effectively prevent the backlight frame 12 from falling off during use, but also help to improve the anti-vibration and dustproof capabilities.

[0043] In addition, a step structure 19 is formed by the lower surface 16 of the outer edge portion and the opening box, which facilitates the display module 100 to be embedded in the corresponding display device in the assembled state, and the lower surface of the outer edge portion 14 provides a sufficient bonding surface for the display module 100 to be firmly bonded to the display device, thereby helping to improve the stability of the connection with the display device.

[0044] Preferably, if Figure 2 As shown, the frame width W of the outer edge portion is in the range of 6mm-7mm, so as to take into account the stability of bonding and the layout matching of the narrow frame. The frame thickness T of the outer edge portion is in the range of 0.5mm-2mm, so as to take into account the reliability of the rigid structure and save material costs.

[0045] Preferably, if Figure 3 As shown, the outer edge of the cover plate 30 protrudes from the outer edge of the outer edge portion 14, and the protrusion dimension D ranges from 0.1 mm to 0.2 mm, so as to take into account the appearance, the layout matching of the narrow frame and the stability of the bonding.

[0046] In the present application embodiment, Figure 4-Figure 8 As shown, the TFT assembly 20 includes an FPC 21, one end of the FPC 21 is connected to the TFT assembly 20. The outer edge portion 14 is also provided with a clearance structure for allowing the other end of the FPC 21 to pass through the clearance structure to the outside of the display module 100.

[0047] As an example, Figure 4-Figure 6 As shown, the clearance structure is a clearance through hole 17 ; the clearance through hole 17 is arranged along a partial section of the connection side between the outer edge portion 14 and the accommodating portion 13 .

[0048] As another example, Figure 7 , Figure 8 As shown, the clearance structure is a clearance groove 18 on the outer edge portion 14; the clearance groove 18 is arranged along a partial section of the outer edge of the upper opening of the accommodating portion 13. The backlight frame 12 also includes a leveling block 50, which is connected to both ends of the outer edge portion 14 forming the clearance groove 18. In addition, the inner side edge of the leveling block 50, the outer edge portion 14 and the accommodating portion 13 define a through hole for the FPC 21 to pass through, and the outer side edge of the leveling block 50 and the outer edge portion 14 form a leveling structure.

[0049] In one embodiment, the leveling block 50 is bonded to the backlight frame 12. In another embodiment, the leveling block 50 is detachably connected to the backlight frame 12 for easy loading and unloading. In a specific example, the material of the leveling block 50 can be PET (polyethylene terephthalate).

[0050] In the present application embodiment, Figure 2 , Figure 3 As shown, the TFT assembly 20 further includes, from bottom to top, a lower polarizer 22, a lower glass 23, a liquid crystal layer (not shown in the figure), an upper glass 24 and an upper polarizer 25, wherein the upper polarizer 25 is bonded to the lower surface of the cover plate 30 by a bonding adhesive 60. The lower glass 23, the liquid crystal layer and the upper glass 24 constitute a liquid crystal cell; the lower polarizer 22 and the upper polarizer 25 are used as light valves.

[0051] Preferably, the backlight frame 12 is an elastic material backlight frame with an integrally formed structure.

[0052] The present application also provides a display device. The display device includes: the narrow-frame display module in the above embodiment. It can be a wearable device, a vehicle-mounted device, or other types of display devices. The present application does not make specific restrictions on this.

[0053] In the description of the present application, it should be noted that the relationship between structures should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. It should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed in a specific orientation. Therefore, they cannot be understood as limitations on the present application.

[0054] Furthermore, unless otherwise expressly specified or limited, the terms “installed”, “connected”, and “connected” may refer to mechanical or electrical connections; direct connections or indirect connections through an intermediate medium.

[0055] It should be noted that in the drawings, the sizes of layers, regions, components and their relative sizes may be exaggerated for clarity. The same or similar reference numerals throughout represent the same or similar components or components with the same or similar functions.

[0056] It should be understood that when a structure or layer is referred to as being "on," "adjacent to," "connected to" or "coupled to" other components or layers, it can be directly on, adjacent to, connected or coupled to the other components or layers, or there may be intervening components or structures.

[0057] Those skilled in the art can understand that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A narrow frame display module, characterized in that: The display module includes a backlight assembly, a TFT assembly and a cover plate from bottom to top; Wherein, the backlight assembly comprises a backlight source and a backlight frame accommodating the backlight source; The backlight frame comprises a receiving portion and an outer edge portion; the main body of the receiving portion is in the shape of an open box opening upward; the outer edge portion extends outward from the outer edge of the upper opening of the open box to form a frame structure around the upper opening; the upper surface of the frame structure is bonded to the lower surface of the cover plate through an adhesive layer; Furthermore, the frame thickness of the frame structure is smaller than the height of the opening box.

2. The narrow-frame display module according to claim 1, characterized in that: The frame width of the frame structure ranges from 6mm to 7mm; The frame thickness of the frame structure ranges from 0.5mm to 2mm.

3. The narrow-frame display module according to claim 1, characterized in that: The outer edge of the cover plate protrudes from the outer edge of the outer edge portion, and the protrusion size ranges from 0.1mm to 0.2mm.

4. The narrow-frame display module according to claim 1, characterized in that: The TFT assembly includes an FPC, one end of the FPC is connected to the TFT assembly; The outer edge portion is also provided with a clearance structure for allowing the other end of the FPC to pass through the clearance structure to the outside of the display module.

5. The narrow-frame display module according to claim 4, characterized in that: The giving way structure is a giving way through hole; the giving way through hole is arranged along a partial section of a connecting side between the outer edge portion and the accommodating portion.

6. The narrow-frame display module according to claim 4, characterized in that: The said giving way structure is a giving way groove on the said outer edge portion; the said giving way groove is arranged along a partial section of the outer edge of the upper opening of the said accommodating portion; The backlight frame also includes a leveling block; the leveling block is connected to the two ends of the outer edge portion forming the clearance groove; and the inner side edge of the leveling block, the outer edge portion and the accommodating portion define a through hole for the FPC to pass through, and the outer side edge of the leveling block and the outer edge portion form a leveling structure.

7. The narrow-frame display module according to claim 6, characterized in that: The leveling block is bonded or detachably connected to the backlight frame.

8. The narrow-frame display module according to claim 1, wherein: The TFT assembly comprises, from bottom to top, a lower polarizer, a lower glass, a liquid crystal layer, an upper glass and an upper polarizer; wherein the upper polarizer is bonded to the lower surface of the cover plate by bonding adhesive.

9. The narrow-frame display module according to any one of claims 1 to 8, characterized in that: The backlight frame is an elastic material backlight frame with an integrally formed structure.

10. A display device, characterized in that: It comprises a narrow-frame display module as described in any one of claims 1 to 9.

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