Display module and display apparatus

Abstract

A display module and a display apparatus. The display module comprises: a display panel (1); a support plate (2) located on the back side of the display panel (1), wherein the display panel (1) comprises at least one exposed element (10) located on the back side of the display panel (1), at least one first opening (20) is formed in the support plate (2), and the position of the first opening (20) corresponds to the position of the exposed element (10); and an anti-dust film (3) comprising a first portion (31) located between the support plate (2) and the display panel (1), wherein the orthographic projections of the first portion (31) and the support plate (2) on the display panel (1) partially overlap, at least one second opening (30) is formed in the first portion (31), the position of the second opening (30) corresponds to the position of the first opening (20), the orthographic projection of the second opening (30) on the display panel (1) is located within the orthographic projection of the first opening (31) on the display panel (1), and the opening size of the second opening (30) is less than the opening size of the first opening (31). The display module can mitigate or avoid the problem of bright lines of the display panel (1) caused by burrs or debris falling on the display panel (1).

Description

Display modules and display devices Technical Field

[0001] This disclosure pertains to the field of display technology, specifically relating to a display module and a display device. Background Technology

[0002] OLED (Organic Light-Emitting Diode) displays have attracted widespread attention due to their advantages such as self-illumination, low power consumption, thinness, flexibility, vibrant colors, high contrast, and fast response speed. Summary of the Invention

[0003] In a first aspect, embodiments of this disclosure provide a display module, comprising: a display panel,

[0004] A support plate is located on the back side of the display panel;

[0005] The display panel includes at least one exposed element located on the back side of the display panel;

[0006] The support plate has at least one first opening, and the first opening corresponds to the position of the exposed element.

[0007] The anti-dandruff film includes a first portion located between the support plate and the display panel, wherein the first portion overlaps with the orthographic projection portion of the support plate on the display panel;

[0008] The first part has at least one second opening, the second opening is located corresponding to the first opening, the orthographic projection of the second opening on the display panel is located within the orthographic projection of the first opening on the display panel, and the opening size of the second opening is smaller than the opening size of the first opening.

[0009] In some embodiments, the first portion includes a first sublayer and an adhesive layer.

[0010] The adhesive layer and the first sub-layer are stacked sequentially away from the support plate, and the portions of the adhesive layer that do not overlap with the orthographic projection of the support plate on the display panel and the portions of the first sub-layer that do not overlap with the orthographic projection of the support plate on the display panel are coincident on the display panel.

[0011] In some embodiments, the first portion further includes a retaining wall located on the side of the adhesive layer opposite to the first sublayer and surrounding at least a portion of the edge of the second opening.

[0012] The orthographic projections of the retaining wall and the supporting plate on the display panel do not overlap, and the retaining wall and the sidewall of the first opening are spaced apart by a first distance;

[0013] The first distance is greater than 0.

[0014] In some embodiments, the retaining wall, the sidewall of the first opening, and the adhesive layer form a groove.

[0015] In some embodiments, the retaining wall, the sidewall of the first opening, and the first sub-layer form a groove.

[0016] The adhesive layer and the groove do not overlap in their orthographic projections on the display panel.

[0017] In some embodiments, the first sublayer has multiple slits in the area corresponding to the bottom of the groove.

[0018] The depth of the cut is less than the thickness of the first sublayer.

[0019] In some embodiments, the retaining wall, the sidewall of the first opening, and the first sub-layer form a groove.

[0020] The orthographic projections of the adhesive layer, the groove, and a portion of the edge of the first opening onto the display panel do not overlap.

[0021] In some embodiments, the height of the retaining wall is greater than the thickness of the adhesive layer and less than the thickness of the support plate.

[0022] In some embodiments, the anti-dandruff film further includes a second portion covering the sidewall of the first opening;

[0023] The second part has the same structure as the first part.

[0024] In some embodiments, the anti-dandruff film further includes a third portion located on the side surface of the support plate opposite to the display panel, and the third portion and at least a portion of the first opening edge overlap in orthographic projection on the display panel;

[0025] The third part has the same structure as the first part.

[0026] In some embodiments, the first part, the second part, and the third part are connected as a single unit;

[0027] Alternatively, the first part, the second part, and the third part can be connected sequentially.

[0028] In some embodiments, the distance between the second opening and the orthographic projection of the first opening on the display panel is in the range of 1 to 2 mm.

[0029] In some embodiments, the width of the orthographic projection of the first portion and / or the third portion onto the display panel along the direction away from the orthographic projection of the first opening onto the display panel ranges from 1 to 2 mm.

[0030] In some embodiments, the adhesive layer has a viscosity ≥1000 gf / inch;

[0031] The thickness of the adhesive layer ranges from 0.03 to 0.08 mm;

[0032] The thickness of the first sublayer ranges from 0.03 to 1 mm.

[0033] In some embodiments, the height of the retaining wall ranges from 0.2 to 0.8 mm;

[0034] The width of the groove along the direction away from the retaining wall ranges from 0.5 to 2 mm;

[0035] The depth of the groove ranges from 0.2 to 1 mm.

[0036] In some embodiments, the material of the retaining wall includes any one of thermoplastic polyester, PU foam, and ABS plastic parts.

[0037] In some embodiments, the distance between the portion of the adhesive layer that overlaps with the orthographic projection of the support plate on the display panel and the orthographic projection of the first opening on the display panel ranges from 0 to 1 mm.

[0038] Secondly, embodiments of this disclosure provide a display device, which includes the aforementioned display module.

[0039] The display module provided in this embodiment of the present disclosure provides a first part of a chip-proof film between a support plate and a display panel, and a second opening is formed in the first part. The orthographic projection of the smaller second opening on the display panel falls within the orthographic projection of the larger first opening on the display panel, i.e., the first part extends beyond a portion of the edge of the first opening. This allows burrs and debris remaining at the edge of the first opening on the support plate to fall onto the first part of the chip-proof film. Thus, the first part of the chip-proof film blocks and supports the burrs and debris remaining at the edge of the first opening on the support plate, improving or preventing burrs and debris from falling onto the back side of the display panel. This further improves or prevents burrs and debris from damaging the display panel, and ultimately improves or prevents the problem of bright lines on the display panel caused by burrs or debris falling onto the display panel.

[0040] The display device provided in this disclosure, by employing the above-described display module, can improve or avoid the problem of bright lines on the display, thereby enhancing the quality and display effect of the display device. Attached Figure Description

[0041] The accompanying drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. The above and other features and advantages will become more apparent to those skilled in the art from the detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0042] Figure 1a is a cross-sectional schematic diagram of a display module according to an embodiment of the present disclosure.

[0043] Figure 1b is an exploded view of the support plate and its built-in bottom membrane in the related technology.

[0044] Figure 1c is an exploded view of the support plate and its built-in bottom membrane in an embodiment of this disclosure.

[0045] Figure 1d is a schematic diagram showing the back side of the display module in an embodiment of this disclosure.

[0046] Figure 2a is a cross-sectional schematic diagram of another display module in an embodiment of this disclosure.

[0047] Figure 2b is an enlarged schematic diagram of part C in Figure 2a.

[0048] Figure 2c is another enlarged schematic diagram of part C in Figure 2a.

[0049] Figure 2d is another enlarged schematic diagram of part C in Figure 2a.

[0050] Figure 2e is another enlarged schematic diagram of part C in Figure 2a.

[0051] Figure 3a is a cross-sectional schematic diagram of another display module in an embodiment of this disclosure.

[0052] Figure 3b is a cross-sectional schematic diagram of another display module in an embodiment of this disclosure.

[0053] Figure 3c is a schematic diagram of the combination process of the support plate and the anti-dandruff film in an embodiment of this disclosure. Detailed Implementation

[0054] To enable those skilled in the art to better understand the technical solutions of the embodiments of this disclosure, a display module and display device provided by the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0055] Embodiments of this disclosure will be described more fully below with reference to the accompanying drawings; however, the embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth in this disclosure. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0056] This disclosure is not limited to the embodiments shown in the accompanying drawings, but includes modifications to the configuration based on the manufacturing process. Therefore, the areas illustrated in the drawings are schematic, and the shapes of the areas shown illustrate specific shapes of the areas, but are not intended to be limiting.

[0057] In related technologies, for OLED notebook products, a metal support plate needs to be attached to the back side of the OLED display panel. The metal support plate is located at least above the bonding area where the display panel bends to the back side to protect the driver chip and circuitry located in the bonding area. In addition, the metal support plate can also fill in the area outside the bonding area on the back side of the display panel to allow for the placement of components such as speakers and batteries in the filled area, which helps to narrow the bonding side bezel of the display panel. Furthermore, the metal support plate can also absorb and dissipate heat, which is beneficial for the heat dissipation of the circuitry on the back side of the display panel.

[0058] The metal support plate is attached to the back of the display panel using double-sided adhesive. Due to the need for QR code recognition and component avoidance on the back of the display panel, multiple window areas need to be processed on the metal support plate. These window areas are generally formed through processes such as laser cutting and stamping. These processing methods inevitably result in burrs and debris at the edges of the window areas. Even with cleaning processes such as plasma cleaning, liquid cleaning, and polishing, some stubborn burrs or debris may still remain at the edges of the window areas on the metal support plate.

[0059] There are three main sources of debris and burrs: First, laser cutting or stamping of metal support plates to form windows inevitably produces debris and burrs at the window edges; second, foreign objects or environmental dust fall into the window area of ​​the metal support plate and then transfer to the back of the display panel; third, debris is introduced by various components during the display module manufacturing process, such as colloids, film burrs, ink peeling, etc.

[0060] Residual burrs or debris on the edge of the window on the metal support plate can easily cause significant damage to the display panel, resulting in bright lines on the display. For example, if debris falls onto the display panel from the edge of the window, it can easily damage the display panel, causing a short circuit between the data lines and the electrostatic discharge circuit in the display panel, resulting in bright lines on the display.

[0061] To address the problems in the related technologies, in a first aspect, embodiments of this disclosure provide a display module, wherein, referring to Figures 1a-1d, 2a-2e, and 3a-3c, the display module includes: a display panel 1, a support plate 2 located on the back side of the display panel 1; the display panel 1 includes at least one exposed element 10 located on the back side of the display panel 1; the support plate 2 has at least one first opening 20, the first opening 20 corresponding to the position of the exposed element 10; a chip-proof film 3 including a first portion 31 located between the support plate 2 and the display panel 1, the first portion 31 and the orthographic projection portion of the support plate 2 on the display panel 1 overlapping; the first portion 31 has at least one second opening 30, the second opening 30 corresponding to the position of the first opening 20, the orthographic projection of the second opening 30 on the display panel 1 being located within the orthographic projection of the first opening 20 on the display panel 1, and the opening size of the second opening 30 being smaller than the opening size of the first opening 20.

[0062] The display panel 1 can be a flexible OLED display panel. The bonding side bezel area of ​​the display panel 1 can be bent to its back side to reduce the width of the bonding side bezel area. The exposed components 10 include electrical components (such as resistors, capacitors, driver chips, etc.) and QR code components located in the bonding side bezel area on the back side of the display panel 1. The exposed components 10 are either avoided or exposed in the support plate 2 by opening a first opening 20. The support plate 2 is made of metal, so that it can provide a certain strength of support for the back side of the display panel 1, especially the bonding side bezel area. The first opening 20 in the support plate 2 is opened by laser cutting or stamping process. The support plate 2 and the display panel 1 are connected by double-sided adhesive 4.

[0063] In this embodiment, by setting a first part 31 of the anti-dandruff film 3 between the support plate 2 and the display panel 1, and opening a second opening 30 in the first part 31, the orthographic projection of the smaller second opening 30 on the display panel 1 falls within the orthographic projection of the larger first opening 20 on the display panel 1, that is, the first part 31 extends beyond a portion of the edge of the first opening 20. This allows burrs and debris remaining at the edge of the first opening 20 on the support plate 2 to fall onto the first part 31 of the anti-dandruff film 2. Thus, the first part 31 of the anti-dandruff film 3 blocks and supports the burrs and debris remaining at the edge of the first opening 20 on the support plate 2, improving or preventing burrs and debris from falling onto the back side of the display panel 1, thereby improving or preventing burrs and debris from damaging the display panel 1, and ultimately improving or preventing the bright line problem on the display panel 1 caused by burrs or debris falling onto the display panel 1.

[0064] In some embodiments, referring to Figures 1a-1d, the first portion 31 includes a first sub-layer 311 and an adhesive layer 312. The adhesive layer 312 and the first sub-layer 311 are stacked sequentially away from the support plate 2, and the portion of the adhesive layer 312 that does not overlap with the orthographic projection of the support plate 2 on the display panel 1 and the portion of the first sub-layer 311 that does not overlap with the orthographic projection of the support plate 2 on the display panel 1 have the same orthographic projection on the display panel 1.

[0065] The adhesive layer 312 can stably adsorb the burrs and debris remaining on the edge of the first opening 20 of the support plate 2, and the first sub-layer 311 can bear the burrs and debris on the edge of the first opening 20.

[0066] In some embodiments, referring to Figures 1b and 1c, the support plate 2 is supplied with a base film 5, which is a release film. To save costs, a portion of the base film 5 is used as a lint-proof film 3, i.e., the base film 5 has a pattern of the lint-proof film 3. A cutting line P is provided between the pattern of the lint-proof film 3 and other areas of the base film 5. When tearing off the base film 5, the pattern of the lint-proof film 3 is retained, and the other areas of the base film 5 are removed. This solution can reduce the cost of the support plate 2 and the lint-proof film 3.

[0067] In some embodiments, referring to FIG1a, the distance S1 between the orthographic projections of the second opening 30 and the first opening 20 on the display panel 1 is in the range of 1 to 2 mm. That is, the edge of the second opening 30 in the first part 31 of the anti-dandruff film 3 extends 1 to 2 mm beyond the edge of the first opening 20 in the support plate 2; this allows burrs and debris remaining at the edge of the first opening 20 to fall onto the edge portion of the second opening 30 that extends beyond the edge of the first opening 20, thereby improving or preventing burrs and debris from falling onto the back side of the display panel 1, and further improving or preventing burrs and debris from damaging the display panel 1.

[0068] In some embodiments, referring to Figures 2a-2e, the first part 31 further includes a barrier wall 313 located on the side of the adhesive layer 312 opposite to the first sub-layer 311 and surrounding at least a portion of the edge of the second opening 30. The orthographic projections of the barrier wall 313 and the support plate 2 on the display panel 1 do not overlap. A first distance S is spaced between the barrier wall 313 and the sidewall of the first opening 20. The first distance S is greater than 0.

[0069] Wherein, the retaining wall 313 surrounds at least a portion of the edge of the second opening 30, meaning that the retaining wall 313 can surround the edge of the second opening 30 in a closed manner or in an intermittent manner.

[0070] In this embodiment, referring to Figures 2a-2e, the gap between the sidewall of the retaining wall 313 and the sidewall of the first opening 20 can collect and contain burrs and debris falling from the edge of the support plate 2, thereby improving or avoiding the problem of bright lines on the display panel 1 caused by burrs or debris falling from the edge of the support plate 2 onto the display panel 1.

[0071] In some embodiments, referring to FIG2b, the retaining wall 313, the sidewall of the first opening 20, and the adhesive layer 312 form a groove A. The groove A can collect and contain burrs and debris falling from the edge of the support plate 2. At the same time, the adhesive layer 312 located at the bottom of the groove A can also adsorb burrs and debris entering the groove A, keeping them stably in the groove A.

[0072] In some embodiments, referring to FIG2c, the retaining wall 313, the sidewall of the first opening 20 and the first sub-layer 311 form a groove A, and the orthographic projections of the adhesive layer 312 and the groove A on the display panel 1 do not overlap.

[0073] In Figure 2c, the adhesive layer 312 at the bottom of groove A is removed. This design allows groove A to be deeper, thus accommodating more burrs and debris.

[0074] In some embodiments, referring to FIG2d, the first sub-layer 311 has multiple slits B in the region corresponding to the bottom of the groove A, the depth of the slits B being less than the thickness of the first sub-layer 311. The slits B in the first sub-layer 311 can clamp burrs and debris that fall into the groove A, thereby preventing burrs and debris from detaching from the groove A and keeping them stably in the groove A. At the same time, since the slits B do not penetrate the thickness of the first sub-layer 311, the first sub-layer 311 can still bear the burrs and debris that fall into the groove A.

[0075] In some embodiments, referring to FIG2e, the retaining wall 313, the sidewall of the first opening 20 and the first sub-layer 311 form a groove A, and the orthographic projections of the adhesive layer 312, the groove A and a portion of the edge of the first opening 20 on the display panel 1 do not overlap.

[0076] The term "partial edge" in Figure 2e can refer to either the perimeter of the first opening 20 near its opening or a portion of the first opening 20 near its opening. In Figure 2e, after removing the adhesive layer 312 from the bottom of groove A, the adhesive layer 312 is further recessed relative to the edge of the first opening 20. This creates a gap between the adhesive layer 312, the first sub-layer 311, and the support plate 2, connecting with groove A. This increases the space for burrs and debris, further improving or preventing bright lines on the display panel 1 caused by burrs or debris from the edge of the support plate 2 falling onto the display panel 1.

[0077] In some embodiments, referring to FIG2e, the distance S3 between the portion of the adhesive layer 312 overlapping with the orthographic projection of the support plate 2 on the display panel 1 and the orthographic projection of the first opening 20 on the display panel 1 ranges from 0 to 1 mm.

[0078] In some embodiments, the height of the retaining wall 313 is greater than the thickness of the adhesive layer 312 but less than the thickness of the support plate 2. This ensures that the surface of the support plate 2 facing away from the display panel 1 remains flat.

[0079] In some embodiments, the height of the retaining wall 313 ranges from 0.2 to 0.8 mm; the width of the groove A along the direction away from the retaining wall 313 ranges from 0.5 to 2 mm; and the depth of the groove A ranges from 0.2 to 1 mm. This configuration allows the groove A to better collect and accommodate burrs and debris.

[0080] In some embodiments, the material of the barrier 313 includes any one of thermoplastic polyester, PU foam, and ABS plastic parts. The material of the first sub-layer 311 includes any one of thermoplastic polyester (PET) and thermoplastic polyurethane elastomer (TPU). The patterns of the barrier 313, adhesive layer 312, and first sub-layer 311 are formed by die cutting.

[0081] In some embodiments, referring to FIG3a, the anti-dandruff film 3 further includes a second portion 32 covering the sidewall of the first opening 20; the second portion 32 has the same structure as the first portion 31. The provision of the second portion 32 can further improve or prevent burrs and debris from the edge of the first opening 20 from falling onto the back side of the display panel 1, thereby further improving or preventing the bright line problem caused by the display panel 1 being damaged by burrs and debris.

[0082] In some embodiments, referring to FIG3b, the anti-dandruff film 3 further includes a third portion 33 located on the side surface of the support plate 2 facing away from the display panel 1, and the third portion 33 and at least a portion of the edge of the first opening 20 overlap in orthographic projection on the display panel 1; the third portion 33 and the first portion 31 have the same structure.

[0083] Wherein, the orthographic projection of the third part 33 and at least a portion of the edge of the first opening 20 on the display panel 1 overlaps, meaning that the third part 33 can overlap with the orthographic projection of the entire edge of the first opening 20 on the display panel 1, or it can overlap with the orthographic projection of a local edge of the first opening 20 on the display panel 1; the local edge can be the edge of the first opening 20 with more accumulated burrs and debris.

[0084] In this embodiment, the third part 33 can further cover the edge of the first opening 20, thereby further improving or preventing burrs and debris from the edge of the first opening 20 from falling onto the back side of the display panel 1, and further improving or preventing the bright line problem caused by the display panel 1 being damaged by burrs and debris.

[0085] In some embodiments, referring to Figures 3b and 3c, the first part 31, the second part 32, and the third part 33 are connected as a single unit. That is, a single piece of anti-dandruff film 3 is used to cover the edge of the first opening 20; specifically, the single piece of anti-dandruff film 3 can cover the edge of the first opening 20 from top to bottom, or it can cover the edge of the first opening 20 from bottom to top.

[0086] In some embodiments, referring to Figures 3b and 3c, the first part 31, the second part 32, and the third part 33 are sequentially joined together. That is, two anti-dandruff films 3 are used to cover the upper surface, lower surface, and edge end face (i.e., the sidewall of the first opening 20) of the edge of the first opening 20, respectively.

[0087] In some embodiments, the first part 31 and the second part 32 can be connected as one unit, and after the edge of the first opening 20 is covered, the second part 32 and the third part 33 are joined together. Alternatively, the second part 32 and the third part 33 can be connected as one unit, and after the edge of the first opening 20 is covered, the second part 32 and the first part 31 are joined together.

[0088] In some embodiments, referring to FIG3b, the width S2 of the orthographic projection of the first portion 31 and / or the third portion 33 on the display panel 1 along the direction away from the orthographic projection of the first opening 20 on the display panel 1 ranges from 1 to 2 mm. This configuration can completely cover the edge of the first opening 20 and the area near the edge, thereby preventing burrs and debris remaining at the edge of the first opening 20 and the area near the edge from falling onto the back side of the display panel 1.

[0089] In some embodiments, the adhesive layer 312 has a viscosity ≥1000 gf / inch; the thickness of the adhesive layer 312 ranges from 0.03 to 0.08 mm; and the thickness of the first sublayer 311 ranges from 0.03 to 1 mm. For example, the thickness of the adhesive layer 312 is 0.05 mm, and the thickness of the first sublayer 311 is 0.05 mm.

[0090] The adhesive layer 312 has strong adhesion and can firmly adsorb burrs and debris. The adhesive layer 312 is relatively thin, which on the one hand can avoid other defects caused by adhesive residue, and on the other hand, the adhesive layer 312 and the first sub-layer 311 are both relatively thin, which can fit more tightly to the support plate 2, thereby forming a good edge-sealing effect on the edge of the first opening 20.

[0091] In some embodiments, referring to FIG3c, before attaching the support plate 2 to the back side of the display panel 1, the anti-dandruff film 3 can be attached to the support plate 2 in advance, and the anti-dandruff film 3 achieves bonding with the support plate 2 through the adhesive layer 312 therein.

[0092] The display module provided in this embodiment of the present disclosure provides a first part of a chip-proof film between a support plate and a display panel, and a second opening is formed in the first part. The orthographic projection of the smaller second opening on the display panel falls within the orthographic projection of the larger first opening on the display panel, i.e., the first part extends beyond a portion of the edge of the first opening. This allows burrs and debris remaining at the edge of the first opening on the support plate to fall onto the first part of the chip-proof film. Thus, the first part of the chip-proof film blocks and supports the burrs and debris remaining at the edge of the first opening on the support plate, improving or preventing burrs and debris from falling onto the back side of the display panel. This further improves or prevents burrs and debris from damaging the display panel, and ultimately improves or prevents the problem of bright lines on the display panel caused by burrs or debris falling onto the display panel.

[0093] Secondly, embodiments of this disclosure also provide a display device, including the display module in the above embodiments.

[0094] By adopting the display module in the above embodiments, the problem of bright lines on the display device can be improved or avoided, thereby enhancing the quality and display effect of the display device.

[0095] The display device provided in this disclosure can be any product or component with display function, such as an OLED panel, OLED TV, OLED billboard, monitor, mobile phone, or navigator.

[0096] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A display module, wherein, include: Display panel, A support plate is located on the back side of the display panel; The display panel includes at least one exposed element located on the back side of the display panel; The support plate has at least one first opening, and the first opening corresponds to the position of the exposed element. The anti-dandruff film includes a first portion located between the support plate and the display panel, wherein the first portion overlaps with the orthographic projection portion of the support plate on the display panel; The first part has at least one second opening, the second opening is located corresponding to the first opening, the orthographic projection of the second opening on the display panel is located within the orthographic projection of the first opening on the display panel, and the opening size of the second opening is smaller than the opening size of the first opening.

2. The display module of claim 1, wherein, The first part includes a first sublayer and an adhesive layer. The adhesive layer and the first sub-layer are stacked sequentially away from the support plate, and the portions of the adhesive layer that do not overlap with the orthographic projection of the support plate on the display panel and the portions of the first sub-layer that do not overlap with the orthographic projection of the support plate on the display panel are coincident on the display panel.

3. The display module of claim 2, wherein, The first portion also includes a retaining wall located on the side of the adhesive layer opposite to the first sub-layer and surrounding at least a portion of the edge of the second opening. The orthographic projections of the retaining wall and the supporting plate on the display panel do not overlap, and the retaining wall and the sidewall of the first opening are spaced apart by a first distance; The first distance is greater than 0.

4. The display module of claim 3, wherein, The retaining wall, the sidewall of the first opening, and the adhesive layer form a groove.

5. The display module of claim 3, wherein, The retaining wall, the sidewall of the first opening, and the first sub-layer form a groove. The adhesive layer and the groove do not overlap in their orthographic projections on the display panel.

6. The display module of claim 5, wherein, The first sub-layer has multiple slits in the area corresponding to the bottom of the groove. The depth of the cut is less than the thickness of the first sublayer.

7. The display module of claim 3, wherein, The retaining wall, the sidewall of the first opening, and the first sub-layer form a groove. The orthographic projections of the adhesive layer, the groove, and a portion of the edge of the first opening onto the display panel do not overlap.

8. The display module of claim 3, wherein, The height of the retaining wall is greater than the thickness of the adhesive layer but less than the thickness of the support plate.

9. The display module of claim 2, wherein, The anti-dandruff film also includes a second part that covers the sidewall of the first opening; The second part has the same structure as the first part.

10. The display module of claim 9, wherein, The anti-dandruff film also includes a third portion located on the side surface of the support plate opposite to the display panel, and the third portion and at least a portion of the first opening edge overlap in orthographic projection on the display panel. The third part has the same structure as the first part.

11. The display module of claim 10, wherein, The first part, the second part, and the third part are connected as one unit; Alternatively, the first part, the second part, and the third part can be connected sequentially.

12. The display module of claim 1, wherein, The distance between the second opening and the first opening projected onto the display panel is in the range of 1 to 2 mm.

13. The display module of claim 11, wherein, The width of the orthographic projection of the first part and / or the third part onto the display panel along the direction away from the orthographic projection of the first opening onto the display panel ranges from 1 to 2 mm.

14. The display module of any of claims 2-13, wherein, The adhesive layer has a viscosity of 1000 gf / inch or more; The adhesive layer has a thickness ranging from 0.03 mm to 0.08 mm; The first sub-layer has a thickness ranging from 0.03 mm to 1 mm.

15. The display module of any of claims 4-8, wherein, The barrier wall has a height ranging from 0.2 mm to 0.8 mm; The groove has a width ranging from 0.5 mm to 2 mm in a direction away from the barrier wall; The groove has a depth ranging from 0.2 mm to 1 mm.

16. The display module of any of claims 3-8, wherein, The barrier wall is made of any one of thermoplastic polyester, PU foam, and ABS plastic.

17. The display module of claim 7, wherein, A distance between a portion of the adhesive layer that overlaps a normal projection of the support plate on the display panel and a normal projection of the first opening on the display panel ranges from 0 mm to 1 mm.

18. A display device, wherein, The display module includes any one of the display modules of claims 1-17.

Images