Shading adhesive tape, backlight module and display module

Abstract

The utility model discloses a shading adhesive tape, a backlight module and a display module, the shading adhesive tape comprises a transparent substrate layer, a first shading layer and a second shading layer, the first shading layer is arranged on one side of the transparent substrate layer, the first shading layer is provided with a first opening, and the first opening exposes a part of the transparent substrate layer; the second shading layer is arranged on the side, away from the first shading layer, of the transparent base material layer, the second shading layer is provided with a second opening, and the second opening exposes a part of the transparent base material layer; and in the thickness direction of the shading adhesive tape, the first opening and the second opening are at least partially overlapped. According to the invention, the yield of the attached shading adhesive tape can be improved.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a light-shielding tape, a backlight module, and a display module. Background Technology

[0002] In related technologies, a liquid crystal display module consists of two parts: a liquid crystal display panel and a backlight module. Light-shielding tape secures the four sides of both the liquid crystal display panel and the backlight module, providing excellent light-shielding for the display module. However, during automated production line assembly, film misalignment can occur. To determine the cause of this misalignment, the light-shielding tape needs to be removed. However, this removal process can cause further film misalignment, interfering with the analysis process.

[0003] To avoid this interference, related technologies employ a segmented, intermittent application method for the light-shielding tape, creating a gap between adjacent segments to observe whether the membrane has shifted. However, since segmented, intermittent application requires multiple applications, errors occur each time, and the accumulated errors from multiple applications are significant, leading to a decrease in the yield rate of the applied light-shielding tape.

[0004] Therefore, it is necessary to propose a new technical solution to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this application is to provide a light-shielding tape, a backlight module, and a display module to improve the yield of applying the light-shielding tape.

[0006] To solve the above problems, the technical solution of this application is as follows:

[0007] Firstly, this application proposes a light-shielding tape, comprising:

[0008] Transparent substrate layer;

[0009] A first light-shielding layer is disposed on one side of the transparent substrate layer. The first light-shielding layer has a first opening, and the first opening exposes a portion of the transparent substrate layer.

[0010] A second light-shielding layer is disposed on the side of the transparent substrate layer away from the first light-shielding layer. The second light-shielding layer has a second opening that exposes a portion of the transparent substrate layer.

[0011] Wherein, in the thickness direction of the light-shielding tape, the first opening and the second opening at least partially overlap.

[0012] In one embodiment of this application, the first light-shielding layer includes a plurality of first sub-parts, which are spaced apart on the side of the transparent substrate layer away from the second light-shielding layer. A first opening is formed between two adjacent first sub-parts, and the ratio of the distance between two adjacent first sub-parts to the thickness of the light-shielding tape is in the range of 1 to 50; and / or,

[0013] The second light-shielding layer includes a plurality of second sub-parts, which are spaced apart on the side of the transparent substrate layer away from the first light-shielding layer. A second opening is formed between two adjacent second sub-parts, and the ratio of the distance between two adjacent second sub-parts to the thickness of the light-shielding tape is in the range of 1 to 50.

[0014] In one embodiment of this application, the extending direction of the transparent substrate layer is the length direction of the first opening, the width direction of the transparent substrate layer is the width direction of the first opening, and the length of the first opening is greater than the width of the first opening; and / or,

[0015] The transparent substrate layer extends in the length direction of the second opening, and the width direction of the transparent substrate layer is the width direction of the second opening. The length of the second opening is greater than the width of the second opening.

[0016] In one embodiment of this application, the first light-shielding layer includes a first light-shielding adhesive layer, and the first opening is disposed in the first light-shielding adhesive layer;

[0017] The second light-shielding layer includes a second light-shielding adhesive layer, and the second opening is disposed in the second light-shielding adhesive layer.

[0018] In one embodiment of this application, the first light-shielding layer includes a first light-shielding coating and a first adhesive layer, the first light-shielding coating and the first adhesive layer being sequentially stacked on the side of the transparent substrate layer away from the second light-shielding layer, and the first opening being disposed in the first light-shielding coating.

[0019] The second light-shielding layer includes a second light-shielding coating and a second adhesive layer, wherein the second light-shielding coating and the second adhesive layer are sequentially stacked on the side of the transparent substrate layer away from the first light-shielding layer, and the second opening is provided in the second light-shielding coating.

[0020] In one embodiment of this application, the light-shielding tape further includes a first transparent filler portion disposed within the first opening; and / or,

[0021] The light-shielding tape also includes a second transparent filler portion, which is disposed within the second opening.

[0022] In one embodiment of this application, the side of the first transparent filler portion away from the transparent substrate layer is flush with the side of the first light-shielding layer away from the transparent substrate layer;

[0023] The side of the second transparent filler portion away from the transparent substrate layer is flush with the side of the second light-shielding layer away from the transparent substrate layer.

[0024] In one embodiment of this application, the first transparent filler portion is integrally formed with the transparent substrate layer; and / or,

[0025] The second transparent filler portion is integrally formed with the transparent substrate layer.

[0026] Secondly, this application proposes a backlight module, including a light-shielding tape, an outer frame, and an optical film; the outer frame has a recessed cavity; the optical film is disposed within the recessed cavity; wherein, the light-shielding tape is located outside the recessed cavity, a portion of a first light-shielding layer overlaps the outer frame, and another portion of the first light-shielding layer extends towards the recessed cavity to above the optical film, the overlapping portion of the first opening and the second opening is a transparent portion; in the thickness direction of the backlight module, the transparent portion overlaps with a portion of the optical film and a portion of the outer frame respectively; the light-shielding tape includes a transparent substrate layer, a first light-shielding layer, and a second light-shielding layer; the first light-shielding layer is disposed on one side of the transparent substrate layer, the first light-shielding layer has a first opening, the first opening exposing a portion of the transparent substrate layer; the second light-shielding layer is disposed on the side of the transparent substrate layer away from the first light-shielding layer, the second light-shielding layer has a second opening, the second opening exposing a portion of the transparent substrate layer; wherein, in the thickness direction of the light-shielding tape, the first opening and the second opening at least partially overlap.

[0027] Thirdly, this application proposes a display module, including a backlight module and a display panel. The backlight module includes a light-shielding tape, an outer frame, and an optical film. The outer frame has a recessed cavity. The optical film is disposed within the recessed cavity. The light-shielding tape is located outside the recessed cavity. A portion of the first light-shielding layer overlaps the outer frame, and another portion of the first light-shielding layer extends towards the recessed cavity above the optical film. The overlapping portion of the first opening and the second opening constitutes a transparent portion. In the thickness direction of the backlight module, the transparent portion overlaps with a portion of the optical film and a portion of the outer frame, respectively. The light-shielding tape includes a transparent base. The device comprises a transparent substrate layer, a first light-shielding layer, and a second light-shielding layer; the first light-shielding layer is disposed on one side of the transparent substrate layer and has a first opening that exposes a portion of the transparent substrate layer; the second light-shielding layer is disposed on the side of the transparent substrate layer away from the first light-shielding layer and has a second opening that exposes a portion of the transparent substrate layer; wherein, in the thickness direction of the light-shielding tape, the first opening and the second opening at least partially overlap; a display panel is disposed on the light-emitting side of the backlight module, the light-shielding tape is located between the outer frame and the display panel, and the second light-shielding layer is connected to the display panel.

[0028] The light-shielding tape of this application includes a first light-shielding layer, a transparent substrate layer, and a second light-shielding layer stacked together. Since both the first and second openings expose the transparent substrate layer, and these openings overlap in the thickness direction of the light-shielding tape, the overlapping area of ​​the first and second openings and the transparent substrate layer forms a viewing window. Therefore, it is not necessary to remove the light-shielding tape during the analysis of the cause of film assembly misalignment. Compared to segmented, intermittent adhesive application, the transparent substrate layer of the light-shielding tape of this application is a continuous film layer, requiring only one application to complete the application. Compared to segmented, intermittent application, this reduces the number of applications, thereby reducing the accumulated errors from multiple applications and improving the yield rate of the applied light-shielding tape. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an embodiment of the display module of this application;

[0030] Figure 2 yes Figure 1 Enlarged view of point B in the middle;

[0031] Figure 3 This is a schematic diagram of one embodiment of the light-shielding tape of this application;

[0032] Figure 4 yes Figure 3 Sectional view at section line C-C';

[0033] Figure 5 This is a schematic diagram of one embodiment of the light-shielding tape of this application;

[0034] Figure 6 This is a schematic diagram of another embodiment of the light-blocking tape of this application;

[0035] Figure 7 This is a schematic diagram of yet another embodiment of the light-blocking tape of this application. Detailed Implementation

[0036] The terms used in this specification and claims have the meanings that are commonly understood by one of ordinary skill in the art to which this application pertains. The terms used in this specification and claims are for the purpose of facilitating the description and understanding of this application only, and are not intended to limit this application to the narrow interpretation of the specific terms used in the specification and claims.

[0037] This application proposes a display module 1000, which can be applied to tablet computers, e-readers, electronic display screens, laptops, mobile phones, augmented reality (AR) / virtual reality (VR) devices, media players, wearable devices, digital cameras, car navigation systems, etc.

[0038] Please see Figure 1 The display module 1000 includes a backlight module 100 and a display panel 200, with the display panel 200 located on the light-emitting side of the backlight module 100.

[0039] Please see Figure 2 This application proposes a backlight module 100, including a light-shielding tape 10, an outer frame 20, and an optical film 30.

[0040] The light-shielding tape 10 is located between the outer frame 20 and the display panel 200. The light-shielding tape 10 includes a first light-shielding layer 12, a transparent substrate layer 11, and a second light-shielding layer 13, which are stacked together. The second light-shielding layer 13 is connected to the display panel 200.

[0041] The outer frame 20 has a recessed cavity. An optical film 30 is disposed within the recessed cavity. A light-shielding tape 10 is located outside the recessed cavity. A portion of the first light-shielding layer 12 overlaps with the outer frame 20. Another portion of the first light-shielding layer 12 extends above the optical film 30 in the direction of the recessed cavity. The overlapping portion of the first opening 121 and the second opening 131 forms a transparent portion. In the thickness direction of the backlight module 100, the transparent portion overlaps with a portion of the optical film 30 and a portion of the outer frame 20, respectively.

[0042] In this embodiment, the light-shielding tape 10 is used to connect the display panel 200 and the outer frame 20 and the optical film 30, while also reducing light leakage from the backlight module 100, thereby improving the display effect.

[0043] Please see Figure 3 This application proposes a light-shielding tape 10, which includes a transparent substrate layer 11, a first light-shielding layer 12 and a second light-shielding layer 13.

[0044] Please see Figure 4 A first light-shielding layer 12 is disposed on one side of the transparent substrate layer 11. The first light-shielding layer 12 has a first opening 121. The first opening 121 exposes a portion of the transparent substrate layer 11.

[0045] The second light-shielding layer 13 is disposed on the side of the transparent substrate layer 11 away from the first light-shielding layer 12. The second light-shielding layer 13 has a second opening 131. The second opening 131 exposes a portion of the transparent substrate layer 11.

[0046] In the thickness direction of the light-shielding tape 10, the first opening 121 and the second opening 131 at least partially overlap.

[0047] The light-shielding tape 10 of this application includes a first light-shielding layer 12, a transparent substrate layer 11, and a second light-shielding layer 13 stacked together. Since the first opening 121 exposes the transparent substrate layer 11, and the second opening 131 exposes the transparent substrate layer 11, and the first opening 121 and the second opening 131 overlap in the thickness direction of the light-shielding tape 10, the overlapping area of ​​the first opening 121, the second opening 131, and the transparent substrate layer 11 forms a viewing window. Therefore, it is not necessary to remove the light-shielding tape 10 during the analysis of the cause of the film assembly misalignment. Compared to the segmented, intermittent adhesive application method, the transparent substrate layer 11 of the light-shielding tape 10 of this application is a continuous film layer, requiring only one application to complete the application of the light-shielding tape 10. Compared to segmented, intermittent adhesive application, this reduces the number of applications, thereby reducing the accumulated errors from multiple applications and improving the yield of the applied light-shielding tape 10.

[0048] In this application, the material of the transparent substrate layer 11 may be polyethylene terephthalate (PET).

[0049] Optionally, the transparent substrate layer 11 extends in the length direction L of the first opening 121. The width direction of the transparent substrate layer 11 is the width direction W of the first opening 121. The length of the first opening 121 is greater than the width of the first opening 121.

[0050] In this embodiment, when the length of the first opening 121 is greater than the width of the first opening 121, the size of the transparent substrate layer 11 exposed by the first opening 121 is relatively large. That is, the size of the part of the transparent substrate layer 11 that can transmit light for easy observation is relatively large, thereby facilitating observation of whether the assembly of the optical film 30 inside the assembled backlight module 100 has shifted.

[0051] Please see Figure 3 Optionally, the transparent substrate layer 11 extends in the length direction L of the second opening 131. The width direction of the transparent substrate layer 11 is the width direction W of the second opening 131. The length D1 of the second opening 131 is greater than the width D2 of the second opening 131.

[0052] In this embodiment, when the length D1 of the second opening 131 is greater than the width D2 of the second opening 131, the size of the transparent substrate layer 11 exposed by the second opening 131 is relatively large. That is, the size of the portion of the transparent substrate layer 11 that can transmit light for observation is relatively large, thereby facilitating observation of whether the assembly of the optical film 30 inside the assembled backlight module 100 has shifted.

[0053] Please see Figure 4 Optionally, the first light-shielding layer 12 includes a plurality of first sub-parts 122. The plurality of first sub-parts 122 are spaced apart on the side of the transparent substrate layer 11 away from the second light-shielding layer 13. A first opening 121 is formed between two adjacent first sub-parts 122. The ratio of the spacing between two adjacent first sub-parts 122 to the thickness of the light-shielding tape 10 is in the range of 1 to 50.

[0054] In this embodiment, the thickness of the light-shielding tape 10 refers to the overall thickness of the first light-shielding layer 12, the transparent substrate layer 11, and the second light-shielding layer 13 after being stacked. The ratio of the spacing between two adjacent first sub-parts 122 to the thickness of the light-shielding tape 10 can be 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 20.5, 21, 21.5, 22, 22.5, 23, 23.5, 24, 24. 5, 25, 25.5, 26, 26.5, 27, 27.5, 28, 28.5, 29, 29.5, 30, 30.5, 31, 31.5, 32, 32.5, 33, 33.5, 34, 34.5, 35, 35.5, 36, 36.5, 37, 37.5, 38, 38.5, 39, 39.5, 40, 40.5, 41, 41.5, 42, 42.5, 43, 43.5, 44, 44.5, 45, 45.5, 46, 46.5, 47, 47.5, 48, 48.5, 49, 49.5, 50, etc.

[0055] As the ratio of the distance between two adjacent first sub-parts 122 to the thickness of the light-shielding tape 10 increases, the size of the transparent substrate layer 11 exposed by the first opening 121 becomes relatively large, making it easier to observe whether the assembly of the internal optical film 30 of the assembled backlight module 100 has shifted.

[0056] As the ratio of the spacing between two adjacent first sub-parts 122 to the thickness of the light-shielding tape 10 decreases, the size of the transparent substrate layer 11 exposed by the first opening 121 becomes relatively small, thereby reducing light leakage caused by the first opening 121 and improving the contrast of the displayed image.

[0057] Optionally, the second light-shielding layer 13 includes a plurality of second sub-parts 132, which are spaced apart on the side of the transparent substrate layer 11 away from the first light-shielding layer 12. A second opening 131 is formed between two adjacent second sub-parts 132, and the ratio of the spacing between two adjacent second sub-parts 132 to the thickness of the light-shielding tape 10 is in the range of 1 to 50.

[0058] The ratio of the spacing between two adjacent second sub-parts 132 to the thickness of the light-shielding tape 10 can be 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11, 11.5, 12, 12.5, 13, 13.5, 14, 14.5, 15, 15.5, 16, 16.5, 17, 17.5, 18, 18.5, 19, 19.5, 20, 20.5, 21, 21.5, 22, 22.5, 23, 23.5, 24, 24. 5, 25, 25.5, 26, 26.5, 27, 27.5, 28, 28.5, 29, 29.5, 30, 30.5, 31, 31.5, 32, 32.5, 33, 33.5, 34, 34.5, 35, 35.5, 36, 36.5, 37, 37.5, 38, 38.5, 39, 39.5, 40, 40.5, 41, 41.5, 42, 42.5, 43, 43.5, 44, 44.5, 45, 45.5, 46, 46.5, 47, 47.5, 48, 48.5, 49, 49.5, 50, etc.

[0059] As the ratio of the spacing between two adjacent second sub-parts 132 to the thickness of the light-shielding tape 10 increases, the size of the transparent substrate layer 11 exposed by the second opening 131 becomes relatively large, making it easier to observe whether the assembly of the internal optical film 30 of the assembled backlight module 100 has shifted.

[0060] As the ratio of the spacing between two adjacent second sub-parts 132 to the thickness of the light-shielding tape 10 decreases, the size of the transparent substrate layer 11 exposed by the second opening 131 becomes relatively small, thereby reducing light leakage caused by the second opening 131 and improving the contrast of the displayed image.

[0061] Please see Figure 4 Optionally, the first light-shielding layer 12 includes a first light-shielding adhesive layer. A first opening 121 is provided in the first light-shielding adhesive layer.

[0062] In this embodiment, the material of the first light-shielding layer 12 is a light-shielding adhesive. In this case, the first light-shielding layer 12 can both provide light-shielding and connect the frame, the optical film 30, and the transparent substrate layer 11. The first light-shielding layer 12 can be formed on one surface of the transparent substrate layer 11 by printing.

[0063] Optionally, the second light-shielding layer 13 includes a second light-shielding adhesive layer. The second opening 131 is disposed in the second light-shielding adhesive layer.

[0064] In this embodiment, the material of the second light-shielding layer 13 is a light-shielding adhesive. In this case, the second light-shielding layer 13 can both provide light shielding and connect the display panel 200 and the transparent substrate layer 11. The second light-shielding layer 13 can be formed on the other surface of the transparent substrate layer 11 by printing.

[0065] Please see Figure 5 Optionally, the first light-shielding layer 12 includes a first light-shielding coating 123 and a first adhesive layer 124. The first light-shielding coating 123 and the first adhesive layer 124 are sequentially stacked on the side of the transparent substrate layer 11 away from the second light-shielding layer 13. A first opening 121 is provided in the first light-shielding coating 123.

[0066] In this embodiment, the first light-shielding layer 12 is composed of a first light-shielding coating 123 and a first adhesive layer 124. The first light-shielding coating 123 can be formed on one surface of the transparent substrate layer 11 by means of printing, spin coating, or other methods, thus achieving a light-shielding effect. The first adhesive layer 124 can be formed by printing on the surface of the first light-shielding coating 123 away from the transparent substrate layer 11, thus connecting the adhesive frame, the optical film 30, and the first light-shielding coating 123.

[0067] Please see Figure 5 Optionally, the second light-shielding layer 13 includes a second light-shielding coating 133 and a second adhesive layer 134. The second light-shielding coating 133 and the second adhesive layer 134 are sequentially stacked on the side of the transparent substrate layer 11 away from the first light-shielding layer 12. A second opening 131 is provided in the second light-shielding coating 133.

[0068] In this embodiment, the second light-shielding layer 13 is composed of a second light-shielding coating 133 and a second adhesive layer 134. The second light-shielding coating 133 can be formed on one surface of the transparent substrate layer 11 by means of printing, spin coating, or other methods, thus achieving a light-shielding effect. The second adhesive layer 134 can be formed by printing on the surface of the second light-shielding coating 133 away from the transparent substrate layer 11, thus serving to connect the display panel 200 and the second light-shielding coating 133.

[0069] Please see Figure 6 Optionally, the light-blocking tape 10 also includes a first transparent filler portion 14. The first transparent filler portion 14 is disposed within the first opening 121.

[0070] In this embodiment, when the light-shielding tape 10 is attached to the outer frame 20 and the optical film 30, the portion of the transparent substrate layer 11 above the first opening 121 is suspended, and the bottom of this portion is unsupported, affecting the stability of the light-shielding tape 10 attachment. Therefore, this embodiment provides a first transparent filler portion 14 in the first opening 121, thereby supporting the portion of the transparent substrate layer 11 above the first opening 121 and improving the stability of the light-shielding tape 10 attachment.

[0071] Please see Figure 6 Optionally, the light-blocking tape 10 also includes a second transparent filler portion 15. The second transparent filler portion 15 is disposed within the second opening 131.

[0072] In this embodiment, when the light-shielding tape 10 is attached to the outer frame 20 and the optical film 30, the portion of the display panel 200 above the second opening 131 is suspended in mid-air, and the bottom of this portion is unsupported, affecting the stability of the display panel 200 attachment. Therefore, this embodiment provides a second transparent filler portion 15 in the second opening 131, thereby supporting the portion of the display panel 200 above the second opening 131 and improving the stability of the display panel 200 attachment.

[0073] Please see Figure 6 Optionally, the side of the first transparent filler 14 away from the transparent substrate layer 11 is flush with the side of the first light-shielding layer 12 away from the transparent substrate layer 11.

[0074] In this embodiment, a step difference can be avoided between the first transparent filler 14 and the first light-shielding layer 12, thereby improving the stability of the light-shielding tape 10.

[0075] Please see Figure 6 Optionally, the side of the second transparent filler 15 away from the transparent substrate layer 11 is flush with the side of the second light-shielding layer 13 away from the transparent substrate layer 11.

[0076] In this embodiment, a step difference can be avoided between the second transparent filler 15 and the second light-shielding layer 13, thereby improving the stability of the light-shielding tape 10.

[0077] Please see Figure 7 Optionally, the first transparent filler 14 is integrally formed with the transparent substrate layer 11.

[0078] In this embodiment, the first transparent filler 14 is integrally formed with the transparent substrate layer 11, which can reduce the process of forming the first transparent filler 14 separately, thereby improving the production efficiency of the light-shielding tape 10 and reducing the production cost.

[0079] Please see Figure 7 Optionally, the second transparent filler 15 is integrally formed with the transparent substrate layer 11.

[0080] In this embodiment, the second transparent filler 15 is integrally formed with the transparent substrate layer 11, which can reduce the process of forming the second transparent filler 15 separately, thereby improving the production efficiency of the light-shielding tape 10 and reducing the production cost.

[0081] The specific embodiments of this application have been described in detail above. The embodiments disclosed above are merely preferred embodiments of this application. Those skilled in the art can make many modifications and improvements without departing from the concept of this application. All such modifications and improvements fall within the scope of protection defined by the claims of this application.

Claims

1. An optical adhesive tape, characterized by, include: Transparent substrate layer; A first light-shielding layer is disposed on one side of the transparent substrate layer. The first light-shielding layer has a first opening, and the first opening exposes a portion of the transparent substrate layer. A second light-shielding layer is disposed on the side of the transparent substrate layer away from the first light-shielding layer. The second light-shielding layer has a second opening that exposes a portion of the transparent substrate layer. Wherein, in the thickness direction of the light-shielding tape, the first opening and the second opening at least partially overlap.

2. The light-blocking tape as described in claim 1, characterized in that, The first light-shielding layer includes a plurality of first sub-parts, which are spaced apart on the side of the transparent substrate layer away from the second light-shielding layer. A first opening is formed between two adjacent first sub-parts, and the ratio of the spacing between two adjacent first sub-parts to the thickness of the light-shielding tape is in the range of 1 to 50; and / or, The second light-shielding layer includes a plurality of second sub-parts, which are spaced apart on the side of the transparent substrate layer away from the first light-shielding layer. A second opening is formed between two adjacent second sub-parts, and the ratio of the distance between two adjacent second sub-parts to the thickness of the light-shielding tape is in the range of 1 to 50.

3. The light shielding tape according to claim 1, wherein The transparent substrate layer extends along the length of the first opening, and the width of the transparent substrate layer is along the width of the first opening; the length of the first opening is greater than its width; and / or, The transparent substrate layer extends in the length direction of the second opening, and the width direction of the transparent substrate layer is the width direction of the second opening. The length of the second opening is greater than the width of the second opening.

4. The light shielding tape according to any one of claims 1 to 3, wherein The first light-shielding layer includes a first light-shielding adhesive layer, and the first opening is disposed in the first light-shielding adhesive layer; The second light-shielding layer includes a second light-shielding adhesive layer, and the second opening is disposed in the second light-shielding adhesive layer.

5. The light shielding tape according to any one of claims 1 to 3, wherein The first light-shielding layer includes a first light-shielding coating and a first adhesive layer, wherein the first light-shielding coating and the first adhesive layer are sequentially stacked on the side of the transparent substrate layer away from the second light-shielding layer, and the first opening is provided in the first light-shielding coating; The second light-shielding layer includes a second light-shielding coating and a second adhesive layer, wherein the second light-shielding coating and the second adhesive layer are sequentially stacked on the side of the transparent substrate layer away from the first light-shielding layer, and the second opening is provided in the second light-shielding coating.

6. The light shielding tape according to any one of claims 1 to 3, wherein The light-shielding tape further includes a first transparent filler portion, which is disposed within the first opening; and / or... The light-shielding tape also includes a second transparent filler portion, which is disposed within the second opening.

7. The light shielding tape according to claim 6, wherein The side of the first transparent filler portion away from the transparent substrate layer is flush with the side of the first light-shielding layer away from the transparent substrate layer; The side of the second transparent filler portion away from the transparent substrate layer is flush with the side of the second light-shielding layer away from the transparent substrate layer.

8. The light shielding tape according to claim 6, wherein The first transparent filler portion is integrally formed with the transparent substrate layer; and / or, The second transparent filler portion is integrally formed with the transparent substrate layer.

9. A backlight module, characterized in that, include: The light-blocking tape as described in any one of claims 1-8; The outer frame has a cavity formed therein; as well as An optical film is disposed within the concave cavity; The light-shielding tape is located outside the cavity, a portion of the first light-shielding layer overlaps the outer frame, and another portion of the first light-shielding layer extends towards the cavity and above the optical film. The overlapping portion of the first opening and the second opening is the transparent portion. In the thickness direction of the backlight module, the transparent portion overlaps with a portion of the optical film and a portion of the outer frame, respectively.

10. A display module, characterized by include: The backlight module as described in claim 9; and The display panel is located on the light-emitting side of the backlight module, the light-shielding tape is located between the outer frame and the display panel, and the second light-shielding layer is connected to the display panel.

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