Protective film, display module and display device

Abstract

The invention discloses a protective film, a display module and a display device, belongs to the technical field of display, and can ensure that the protective film is flatly attached to a cover plate body and reduce generation of bubbles. The protective film is applied to a cover plate body with a spherical curved convex surface. When the protective film is in the curved surface state, the curved surface form of the protective film is matched with the curved surface form of the convex surface of the cover plate body; when the protective film is in the plane state, the protective film is provided with at least one adjusting part, and the adjusting part is used for adjusting the curved surface form of the protective film so that the curved surface form of the protective film can be matched with the curved surface form of the convex face of the cover plate body.

Description

Technical Field

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

[0002] At present, CG (Cover Glass) with a spherical curved surface structure is widely used in smart wearable products. The CG with a spherical curved surface structure can improve the appearance design of smart wearable products.

[0003] However, since the surface of the spherical curved surface structure CG is spherical, the overall thickness of CG is uneven, so the protective film cannot be smoothly attached to the CG surface. When the protective film is attached to the CG surface, bubbles are easily generated on the CG surface. In the subsequent processes, a suction nozzle is required to suck the CG surface after the protective film is attached. If the suction nozzle is attached to the bubbles in the protective film, the entire display module may fall off, thereby damaging the display module and affecting the yield rate of the display module. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a protective film, a display module and a display device, which can ensure that the protective film is flatly attached to the cover body and reduce the generation of bubbles.

[0005] In a first aspect of an embodiment of the present application, a protective film is provided, which is applied to a cover plate body having a spherical curved convex surface, wherein the protective film has a flat state and a curved state, and the protective film is converted from a flat state to a curved state during the process of being attached to the convex surface of the cover plate body;

[0006] When the protective film is in a curved state, the curved surface of the protective film matches the curved surface of the convex surface of the cover plate body;

[0007] When the protective film is in a planar state, the protective film has at least one adjustment portion, which is used to adjust the curved surface shape of the protective film when the protective film is converted from a planar state to a curved surface state, so that the curved surface shape of the protective film is adapted to the curved surface shape of the convex surface of the cover body.

[0008] In some embodiments, at least two of the adjustment parts are distributed in a circular array on the protective film with the central axis of the protective film as the array axis.

[0009] In some embodiments, the adjustment portion has a central through hole and a bonding through hole, the central through hole is a cylindrical hole, and the bonding through hole is a fan-shaped hole;

[0010] The central axis of the central through hole coincides with the central axis of the protective film, the bonding through hole has a first symmetry plane in the thickness direction of the protective film, and the central axis of the central through hole is located in the first symmetry plane.

[0011] In some embodiments, the central through hole has a bottom diameter R, wherein 1 mm≤R≤2 mm.

[0012] In some embodiments, the bonding through hole has a central angle β, wherein 2°≤β≤4°.

[0013] In some embodiments, the cover plate further includes a tearing finger assembly extending from the protective film, the tearing finger assembly having a second symmetric plane in the thickness direction of the protective film, and an angle α is formed between the second symmetric plane and the first symmetric plane, wherein 30°≤α≤180°.

[0014] In some embodiments, the tearing hand assembly includes a connecting portion connected to the protective film, and a clamping portion connected to the connecting portion for clamping the protective film.

[0015] In some embodiments, the tearing hand assembly further includes a deformation portion, wherein the deformation portion is located between the connecting portion and the clamping portion, and the deformation portion has ductility to allow the distance between the connecting portion and the clamping portion to change.

[0016] In some embodiments, the projection of the deformation portion on the horizontal plane is Z-shaped.

[0017] A second aspect of an embodiment of the present application provides a display module, comprising a cover body and a display panel, and a protective film as described in the first aspect, wherein the protective film is adhered to the convex surface of the cover body, and the cover body is located on the light emitting side of the display panel.

[0018] According to a third aspect of the embodiments of the present application, a display device is provided, comprising the display module as described in the second aspect.

[0019] The present application provides an adjustment portion on the protective film. During the process of the protective film being attached to the cover body, that is, during the process of the protective film being converted from a planar state to a curved state, the curved surface morphology of the protective film can be adjusted based on the adjustment portion to make the curved surface morphology of the protective film match the curved surface morphology of the convex surface of the cover body, thereby reducing the generation of bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1is a schematic diagram of the process of attaching the protective film to the convex surface of the cover plate body;

[0022] Figure 2 is a schematic cross-sectional view after the protective film and the cover plate body are attached;

[0023] Figure 3 is a schematic top view of a protective film in the related art;

[0024] Figure 4 It is a schematic top view of the uneven fitting of the protective film and the cover plate body in the related art;

[0025] Figure 5 is a schematic top view of a cover plate provided in an embodiment of the present application;

[0026] Figure 6 is a schematic top view of a protective film provided in an embodiment of the present application;

[0027] Figure 7 yes Figure 6 AA schematic cross-sectional view in;

[0028] Figure 8 is a schematic principle diagram of the protective film provided in an embodiment of the present application being attached to the cover plate body;

[0029] Fig. 9 is a schematic top view of another protective film provided in an embodiment of the present application;

[0030] Fig.10 is a schematic top view of another cover plate provided in an embodiment of the present application;

[0031] Fig.11 is a schematic principle diagram of another protective film attached to a cover plate body provided in an embodiment of the present application;

[0032] Fig.12 is a schematic top view of another cover plate provided in an embodiment of the present application;

[0033] Fig.13 is a schematic principle diagram of another protective film attached to a cover plate body provided in an embodiment of the present application;

[0034] Fig.14 is a schematic top view of another cover plate provided in an embodiment of the present application;

[0035] Fig.15 is a schematic top view of another protective film provided in an embodiment of the present application;

[0036] Fig.16 is a schematic top view of another protective film provided in an embodiment of the present application;

[0037] Fig.17 It is a schematic top view of another protective film provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0039] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the requirements defined by the statement "including one..." do not exclude the presence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0040] The CG surface of smart wearable products is provided with an AF (Anti-Finger) film. Scratched AF film can easily cause the anti-fingerprint performance to decline. There is also a strengthening layer on the CG surface, which will damage the strength after being bumped and scratched. Therefore, the CG surface needs to be covered with a protective film to form a physical protective layer, which can effectively protect the AF film and strengthening layer from damage. When the surface of the CG with a spherical curved surface structure applied on the CG surface is spherical, the overall thickness of the CG is uneven, making it impossible for the protective film to fit smoothly to the CG surface.

[0041] In the related art, when the protective film 2 is attached to the CG surface, bubbles are easily generated on the CG surface. In the subsequent processes, if the suction nozzle is adsorbed on the bubbles, the entire display module may fall, thereby damaging the display module and affecting the product yield.

[0042] See also Figure 1 , showing a schematic diagram of the process of attaching the protective film 2 to the convex surface of the cover body 100. The prepared protective film 200 is placed on the convex surface of the cover body 100. After the positioning is completed, the protective film 2 is moved in the moving direction 10 close to the convex surface of the cover body 100, and an appropriate tool, such as a scraper or a roller, is used to attach the protective film 2 to the surface of the cover body 100. Figure 2 It is a schematic cross-sectional view after the protective film 2 and the cover plate body 100 are bonded together.

[0043] See also Figure 3 , showing a schematic top view of a protective film in the related art. Figure 3 The protective film 2 is in a flat state and is cylindrical. Figure 4 , which shows a schematic diagram of the uneven bonding between the protective film 2 and the cover body 100 in the related art. During the bonding process, since the cover body 100 is a spherical curved surface structure, it is easy to produce the following on the surface of the cover body 100: Figure 4 The bubble 3 shown. In the subsequent process, if the suction nozzle is adsorbed on the bubble 3, it is easy to cause the protective film 2 to separate from the cover body 100. That is, the protective film 2 is separated from the entire display module, causing the entire display module to fall, thereby causing damage to the display module and affecting the yield rate of the display module.

[0044] In view of this, the embodiments of the present application provide a protective film, a display module and a display device, which can ensure that the protective film 200 fits flatly on the cover body 100, reduce the generation of bubbles, avoid the display module falling and damage to the display module caused by the suction nozzle adsorbing on the bubbles, and improve the yield rate of the display module.

[0045] In a first aspect, an embodiment of the present application provides a protective film. Figure 5 A schematic top view of a cover plate provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the cover body 100 is a spherical curved surface structure.

[0046] It should be noted that the cover body 100 of the smart wearable device is usually made of glass. The material of the cover body 100 in the embodiment of the present application is not limited to glass, and can also be plastic, wood, etc.

[0047] Figure 6 A schematic top view of the protective film 200 provided in an embodiment of the present application in a planar state.

[0048] The state of the protective film 200 in the embodiment of the present application includes a flat state and a curved state. Figure 6 As shown, before the protective film 200 is attached to the cover body 100, the protective film 200 is in a flat state. Figure 1As shown, the protective film 200 is placed on the convex surface of the cover body 100. After the positioning is completed, the protective film 200 is moved in the moving direction 10 close to the convex surface of the cover body 100, and an appropriate tool such as a scraper or a roller is used to attach the protective film 200 to the surface of the cover body 100. After the protective film 200 is attached to the cover body 100, the protective film 200 is in a curved state. That is, the protective film 200 is converted from a flat state to a curved state during the process of being attached to the convex surface of the cover body 100.

[0049] The protective film attaching process includes the steps of surface treatment, cutting the protective film, film attaching, removing bubbles, curing the protective film, etc. The embodiment of the present application can use the attaching process in the related art to attach the protective film 200 to the convex surface of the cover body 100. The embodiment of the present application does not limit the specific attaching process.

[0050] In the embodiment of the present application, if the protective film 200 is in a planar state, the protective film 200 has at least one adjustment portion 300, and the adjustment portion 300 is used to adjust the curved surface of the protective film 200 when the protective film 200 is converted from a planar state to a curved surface state, so that the curved surface of the protective film 200 is adapted to the curved surface of the convex surface of the cover body 100. In other words, the adjustment portion can make the protective film 200 fit the convex surface of the cover body 100 more snugly, thereby reducing the generation of bubbles between the protective film 200 and the cover body 100.

[0051] The adjustment portion 300 of the protective film 200 includes various different forms, such as Figure 6 As shown, the protective film 200 is cylindrical, and the adjusting portion 300 includes a central through hole 301 and a bonding through hole 302 , wherein the central through hole 301 is a cylindrical through hole. Figure 7 for Figure 6 AA cross-sectional view of the protective film 200. Figure 6 As shown, the central through hole 301 has a central axis 3011 , and the protective film 200 has a central axis (not shown in the figure), wherein the central axis 3011 of the central through hole 301 coincides with the central axis of the protective film 200 .

[0052] Continue to see Figure 6 and Figure 7 The adjusting portion 300 further includes a bonding through hole 302, which is a fan-shaped hole. The bonding through hole 302 has a first symmetry plane 3021 in the thickness direction of the protective film 200. The central axis 3011 of the central through hole 301 is located in the first symmetry plane 3021. In other words, the central through hole 301 and the bonding through hole 302 are not only connected together, but also share a central axis.

[0053] Figure 8 for Figure 6 The protective film 200 is attached to the cover body 100 when the bonding principle is shown. Figure 8 As shown, when the protective film 200 is attached to the convex surface of the cover body 100, the two side surfaces of the sector-shaped body of the bonding through hole 302 are respectively approached to each other in the first direction 20 and the second direction 30 until the two side surfaces are completely attached together, and the Figure 5 Cover shown.

[0054] It should be noted that Figure 5 The cover plate shown contains dotted lines, which are not actual lines, but are used to show the position where the two side surfaces of the sector-shaped body of the bonding through hole 302 are close to each other. It can be seen that the protective film 200 is attached to the cover plate body 100, and after the curved surface shape is adjusted by the adjustment part 300, the adjustment part 300 disappears.

[0055] Figure 5 The cover plate shown includes a cover plate body 100 and a protective film 200. Under the action of the bonding through hole 302, it can ensure that the protective film 200 fully covers the convex surface of the cover plate body 100, thereby reducing the generation of bubbles on the surface of the cover plate body 100. In addition, since a central through hole 301 is provided, the tearing problem of the edge where the bonding through hole 302 and the central through hole 301 meet can be avoided, thereby improving the protective effect of the protective film 200. When the cover plate of the embodiment of the present application is used, since there are no bubbles on the surface of the cover plate, when the suction nozzle adsorbs the display module, the display module will not fall due to the adsorption of bubbles, and the display module will not be damaged, thereby improving the yield rate of the display module.

[0056] The adjusting portion 300 of the above-mentioned embodiment includes a bonding through hole in the form of a fan-shaped hole, and the adjusting portion 300 may also be a through hole in other forms. Fig. 9 A schematic top view of another protective film 200 provided in an embodiment of the present application in a planar state. Fig. 9 As shown, the protective film 200 has an adjustment portion 300 , and the adjustment portion 300 has a central through hole 301 and a bonding through hole 302 .

[0057] Different from the above embodiment, Fig. 9 The bonding through hole 302 in the example is a through hole in a special-shaped structure. The thickness direction of the protective film of the bonding through hole 302 also has a first symmetry plane 3021. The central axis of the central through hole 301 is also located in the first symmetry plane 3021. Fig. 9 When the protective film 200 shown is attached to the convex surface of the cover body 100 , the adjustment unit 300 can also be used to adjust the curved surface of the protective film 200 so that the curved surface of the protective film 200 matches the curved surface of the convex surface of the cover body 100 .

[0058] Specifically, the two side surfaces of the bonding through hole 302 are brought closer to each other in the first direction 20 and the second direction 30 respectively until the two side surfaces are completely attached together to obtain Fig.10 The cover shown. It can be seen that Fig. 9 When the protective film 200 is attached to the cover body 100 , the curved surface of the protective film can be adjusted based on the adjusting portion 300 to match the curved surface of the convex surface of the cover body 100 , thereby reducing the generation of bubbles.

[0059] It should be noted that the shape of the adjustment portion 300 in the embodiment of the present application is not limited to the shapes described in the above two embodiments, but can be arbitrarily deformed, and only needs to have the function of adjusting the curved surface shape of the protective film 200 to make the curved surface shape of the protective film 200 adapt to the curved surface shape of the convex surface of the cover body 100.

[0060] In some embodiments, the protective film 200 may also have at least two adjustment parts. The following takes the bonding through hole 302 included in the adjustment part 300 as an example to illustrate the scheme that the protective film 200 has multiple adjustment parts 300.

[0061] Figure 6 The protective film 200 has a central through hole 301 and a bonding through hole 302 . The central axis of the central through hole 301 is located in a first symmetric plane 3021 of the bonding through hole 302 . Figure 6 When the protective film 200 having a bonding through hole 302 is attached to the cover plate body 100, the two side surfaces of the sector body of the bonding through hole 302 are respectively approached to each other in the first direction 20 and the second direction 30 until the two side surfaces are completely attached together, and the Figure 5 It can be seen that the protective film 200 with one bonding through hole 302 can achieve full coverage of the convex surface of the cover body 100 by the protective film 200, thereby reducing the generation of bubbles on the surface of the cover body 100.

[0062] Fig.11 A schematic top view of another protective film 200 provided in an embodiment of the present application in a planar state. Fig.11 As shown, the protective film 200 has two adjustment parts 300. Since the two adjustment parts 300 share a central through hole 301, Fig.11 The protective film 200 in the figure can be regarded as having a central through hole 301 and two bonding through holes 302. The first symmetric planes 3021 of the two bonding through holes 302 coincide with each other, that is, the central axis of the central through hole 301 is located in the first symmetric planes 3021 of the two bonding through holes 302 at the same time.

[0063] Fig.11The protective film 200 shown with two bonding through holes 302 is actually divided into two parts by the two bonding through holes 302. Fig.10 When the protective film 200 having two bonding through holes 302 is attached to the cover plate body 100 , it is necessary to bond the two side surfaces of the two sector-shaped bodies of the two bonding through holes 302 respectively.

[0064] Specifically, the two side surfaces of the fan-shaped body of the first bonding through hole 302 approach each other in the first direction 20 and the second direction 30 respectively, until the two side surfaces are completely attached together. The two side surfaces of the fan-shaped body of the second bonding through hole 302 approach each other in the third direction 40 and the fourth direction 50 respectively, until the two side surfaces are completely attached together. Fig.12 Cover shown.

[0065] The protective film 200 with two bonding through holes 302 covers a smaller area on the convex surface of the cover body than the protective film 200 with only one bonding through hole 302, and during the attachment process, the two side surfaces on both sides of the two bonding through holes 302 need to be bonded respectively, so that the protective film 200 fits more snugly on the cover body 100, thereby further reducing the generation of bubbles.

[0066] For example, see Fig.13 , Fig.13 The protective film 200 in the embodiment has a central through hole 301 and three bonding through holes 302 . The first symmetry planes of the three bonding through holes 302 intersect, and the central axis of the central through hole 301 is simultaneously located in the first symmetry planes of the three bonding through holes 302 .

[0067] Fig.13 The protective film 200 shown with three bonding through holes 302 is actually divided into three parts by the three bonding through holes 302. Fig.13 When the protective film 200 having three bonding through holes 302 is attached to the cover plate body 100 , it is necessary to bond the two side surfaces on both sides of the sector-shaped bodies of the three bonding through holes 302 .

[0068] Specifically, the two side surfaces of the fan-shaped body of the first bonding through hole 302 approach each other in the first direction 20 and the second direction 30, respectively, until the two side surfaces are completely attached together. The two side surfaces of the fan-shaped body of the second bonding through hole 302 approach each other in the third direction 40 and the fourth direction 50, respectively, until the two side surfaces are completely attached together. The two side surfaces of the fan-shaped body of the third bonding through hole 302 approach each other in the fifth direction 60 and the sixth direction 70, respectively, until the two side surfaces are completely attached together. Finally, Fig.14 Cover shown.

[0069] The protective film 200 with three bonding through holes 302 covers a smaller area on the convex surface of the cover body than the protective film 200 with two bonding through holes 302, and during the attachment process, the two side surfaces on both sides of the three bonding through holes 302 need to be bonded respectively. The attached protective film 200 has a wider adjustment range, so that the protective film 200 fits more snugly on the cover body 100, thereby further reducing the generation of bubbles.

[0070] It should be noted that the number of the adjustment parts 300, that is, the number of the bonding through holes 302, can be set according to actual use requirements and is not limited to the number shown in the above exemplary embodiment. For example, when the cover body is relatively large, the number of the bonding through holes 302 can be set to four or five to further ensure that the protective film 200 fully covers the cover body 100, thereby further reducing the generation of bubbles.

[0071] In some embodiments, at least two adjustment parts 300 on the protective film 200 may be unevenly distributed around the central axis of the protective film 200, or evenly distributed around the central axis of the protective film 200. Compared with uneven distribution around the central axis of the protective film 200, even distribution around the central axis of the protective film 200 can simplify the production process of the protective film 200 and is more conducive to automated production. At the same time, it is more conducive to adjusting the coverage of the protective film 200 on the cover body 100, ensuring that the protective film 200 fully covers the convex surface of the cover body 100, thereby further reducing the generation of bubbles on the surface of the cover body 100.

[0072] For example, see Fig.13 , Fig.13 The protective film 200 in the embodiment has a central through hole 301 and three bonding through holes 302. The first symmetry planes 3021 of the three bonding through holes 302 intersect, and the central axis of the central through hole 301 is simultaneously located in the first symmetry planes 3021 of the three bonding through holes 302. Moreover, the angles between the first symmetry planes 3021 of the three adjacent bonding through holes 302 are all 120°, that is, the three bonding through holes 302 are distributed in a circular array on the protective film 200 with the central axis of the protective film 200 as the array axis. Such a layout is more conducive to adjusting the coverage of the protective film 200 on the cover body 100.

[0073] It should be noted that the central through hole 301 and the bonding through hole 302 of the protective film 200 of the embodiment of the present application can be obtained by punching.

[0074] For example, Figure 6When processing the protective film 200 shown, the protective film 200 can be punched in two steps, including fan-shaped punching to obtain the bonding through hole 302, and central through hole punching to obtain the central through hole 301. The protective film 200 can also be punched once using a punching tool of a special shape to simultaneously obtain the central through hole 301 and the bonding through hole 302. The embodiment of the present application does not limit the processing method of the central through hole 301 and the bonding through hole 302.

[0075] In some embodiments, see Fig.15 The cover plate further includes a tearing hand assembly 400 extending from the protective film 200. The tearing hand assembly 400 is used to facilitate the removal of the protective film 200 from the cover plate body 100, thereby avoiding damage to the cover plate body 100 when the protective film 200 is removed from the cover plate body 100.

[0076] Continue to see Fig.15 The tearing assembly 400 has a second symmetric plane 401 in the thickness direction of the protective film 200, and an angle α is formed between the second symmetric plane 401 and the first symmetric plane 3021, wherein 30°≤α≤180°.

[0077] When the protective film 200 is removed from the cover body 100 using the tearing finger assembly 400, if the angle between the second symmetric plane 401 and the first symmetric plane 3021 is too small, that is, the tearing finger assembly 400 is too close to the bonding through hole 302, the protective film 200 is easily torn, causing the protective film 200 to remain on the cover body 100.

[0078] By avoiding the angle between the second symmetric plane 401 and the first symmetric plane 3021 being too small, that is, avoiding the tearing hand assembly 400 being too close to the bonding through hole 302, it is possible to avoid the protective film 200 being torn when the protective film 200 is removed from the cover body 100 by using the tearing hand assembly, thereby avoiding the protective film 200 from remaining on the cover body 100.

[0079] For example, Fig.15 The angle between the second symmetric plane 401 of the tearing hand assembly 400 and the first symmetric plane 3021 of the bonding through hole 302 is 90°. The tearing hand assembly 400 is far away from the bonding through hole 302. Therefore, when the tearing hand assembly 400 is used to remove the protective film 200 from the cover body 100, it is not easy to tear the protective film 200, and the protective film 200 is not easy to remain on the cover body 100.

[0080] When the angle between the second symmetric plane 401 of the tearing hand assembly 400 and the first symmetric plane 3021 of the bonding through hole 302 is 30°, the distance between the tearing hand assembly 400 and the bonding through hole 302 is relatively far, and it is not easy to tear the protective film 200 when the tearing hand assembly 400 is used to remove the protective film 200 from the cover body 100. When the angle between the second symmetric plane 401 of the tearing hand assembly 400 and the first symmetric plane 3021 of the bonding through hole 302 is 180°, the distance between the tearing hand assembly 400 and the bonding through hole 302 is relatively far, and it is not easy to tear the protective film 200 when the tearing hand assembly 400 is used to remove the protective film 200 from the cover body 100.

[0081] Fig.15 In the illustrated cover plate, the central axis of the protective film 200 is located in the second symmetric plane 401 of the tearing hand assembly 400 . In some embodiments, the central axis of the protective film 200 may not be located in the second symmetric plane 401 of the tearing hand assembly 400 .

[0082] For example, Fig.16 The tearing hand assembly 400 shown in the figure has a second symmetric surface 401. Fig.15 The tearing hand assembly 400 shown is different in that Fig.16 The central axis of the protective film 200 is not located in the second symmetry plane 401 of the tearing hand assembly 400 .

[0083] There is also an angle α between the second symmetry plane 401 and the first symmetry plane 3021. The size of the angle is limited to 30°≤α≤180°, which can also prevent the distance between the tearing hand assembly 400 and the adjustment part 300 from being too close. Therefore, when the tearing hand assembly 400 is used to remove the protective film 200 from the cover body 100, it is not easy to tear the protective film 200, and the protective film 200 is not easy to remain on the cover body 100.

[0084] In some embodiments, the cover plate may include at least two tearing hand assemblies 400 , and the plurality of tearing hand assemblies 400 may further prevent the protective film 200 from remaining on the cover plate body 100 when the protective film 200 is torn.

[0085] For example, Fig.15 The cover shown includes two tearing hand assemblies 400, both of which have a second symmetric plane 401, and the two second symmetric planes 401 have an angle α with the first symmetric plane, and the sizes of the two angles satisfy 30°≤α≤180°. In this way, the distance between the two tearing hand assemblies 400 and the adjustment part 300 is relatively far, and when any tearing hand assembly 400 is used to remove the protective film 200 from the cover body 100, it is not easy to tear the protective film 200, and the protective film 200 is not easy to remain on the cover body 100.

[0086] The cover plate includes two tearing hand assemblies 400, which can also achieve the following effect: when the protective film 200 is removed from the cover plate body 100 using one of the tearing hand assemblies 400, the protective film 200 may be torn. This causes a portion of the protective film 200 to be removed from the cover plate body 100, while another portion of the protective film 200 still remains on the cover plate body 100. The portion of the protective film 200 remaining on the cover plate body 100 is also connected to another tearing hand assembly 400. At this time, only the protective film 200 remaining on the cover plate body 100 needs to be removed from the cover plate body 100 using another tearing hand assembly 400, thereby preventing the protective film 200 from remaining on the cover plate body 100 when it is torn.

[0087] It should be noted that the number of tear-off assemblies 400 is not limited in the embodiment of the present application, and the number of tear-off assemblies 400 can be set according to actual needs to achieve the effect of completely removing the protective film 200 from the cover body 100 .

[0088] In some embodiments, Fig.15 As shown, the tearing hand assembly 400 includes a connecting portion 402 connected to the protective film 200, and a clamping portion 403 connected to the connecting portion 402 for clamping the protective film 200. The thickness of the connecting portion 402 can be set to be thicker than the thickness of the clamping portion 403.

[0089] For example, the thickness of the connecting portion 402 may be the same as the thickness of the protective film 200, while the thickness of the clamping portion 403 may be thinner than the thickness of the protective film 200. In this way, when the protective film 200 is removed from the cover body 100 by using the tearing hand assembly 400, the connecting portion 402 and the protective film 200 can be prevented from being torn at the connecting position, and the protective film 200 can be further prevented from remaining on the cover body 100.

[0090] In some embodiments, the tearing hand assembly 400 further includes a deformation portion 404, the deformation portion 404 is located between the connecting portion 402 and the clamping portion 403, and the deformation portion 404 is ductile, and is used to allow the distance between the connecting portion 402 and the clamping portion 403 to change. Since the deformation portion 404 of the tearing hand assembly 400 is ductile, the cover plate body 100 will not be pulled during the process of removing the protective film 200 from the cover plate body 100 by using the tearing hand assembly 400, thereby reducing the damage to the surface of the cover plate body 100 during the film removal process.

[0091] In some embodiments, the projection of the deformed portion 404 on the horizontal plane is in a Z-shape. Figure 1In order to make the deformation part 404 ductile, the deformation part 404 needs to be processed with a ductile material, and the deformation part 404 and the connecting part 402 and the clamping part 403 need to be processed with different materials, which increases the process difficulty of the tearing hand assembly 400.

[0092] In the embodiment of the present application, the deformation part 404 is designed to be Z-shaped, and the special structure of the Z-shape is used to achieve the ductility of the deformation part 404. The deformation part 404 does not need to use a ductile material, but uses the same material as the connecting part 402 and the clamping part 403 to achieve the ductility of the deformation part 404, thereby reducing the process difficulty of the tearing hand assembly 400.

[0093] In some embodiments, the tearing hand assembly 400 is further provided with a through hole, and the through hole can be provided on the clamping portion 403. When the tearing hand assembly 400 is used to remove the protective film 200 from the cover body 100, the clamping portion 403 can be clamped out. The material of the protective film 200 is usually a smooth material, so when force is applied, it may cause the clamped object to slip off the clamping portion 403. After the through hole is provided on the clamping portion 403, the friction between the clamped object and the protective film 200 can be increased, thereby preventing the clamped object from slipping off the clamping portion 403 when force is applied, and improving the efficiency of removing the protective film 200.

[0094] In some embodiments, Figure 8 As shown, the central through hole 301 has a bottom diameter R, wherein 1mm≤R≤2mm. The central through hole 301 in the embodiment of the present application can avoid the tearing problem at the connecting edge of the bonding through hole 302 and the central through hole 301. In order to achieve the above functions, the bottom diameter R of the central through hole 301 needs to be greater than 1mm. If the bottom diameter R of the central through hole 301 is too large, it will reduce the protective effect of the protective film 200 on the cover body 100, so the bottom diameter R of the central through hole 301 can be limited to within 2mm.

[0095] It can be seen that setting the bottom diameter R of the central through hole 301 to 1mm≤R≤2mm can avoid the tearing problem at the connecting edge of the bonding through hole 302 and the central through hole 301, and avoid excessively reducing the protection range of the protective film 200 on the cover body 100.

[0096] In some embodiments, Figure 8As shown, the bonding through hole 302 has a central angle β, wherein 2°≤β≤4°. The bonding through hole 302 in the embodiment of the present application can adjust the curved surface morphology of the protective film 200. In order to achieve the above functions, the central angle β of the bonding through hole 302 needs to be greater than 2°, so as to ensure a sufficient range of adjustment for the curved surface morphology. If the central angle β of the bonding through hole 302 is too large, the protective film 200 will not be able to completely cover the convex surface of the cover body 100 when it is converted from a planar state to a curved state. Therefore, the central angle β of the bonding through hole 302 can be limited to within 4°.

[0097] It can be seen that setting the central angle β of the bonding through hole 302 to 2°≤β≤4° can not only ensure the adjustment range of the adjustment portion 300 , but also avoid the situation where the protective film 200 cannot completely cover the cover body 100 .

[0098] The second aspect of the present application provides a display module, comprising a cover plate body and a display panel, and the protective film as described in the first aspect, wherein the protective film is attached to the convex surface of the cover plate body, and the cover plate body is located on the light-emitting side of the display panel. After the display module of the embodiment of the present application adopts the cover plate of the embodiment of the present application, the proportion of chip drop can be effectively reduced in the subsequent production process, thereby improving the yield rate of the display module.

[0099] The following table shows the chip drop ratio and chip drop rate of display modules using related technology cover plates in subsequent production processes. Each process section Film drop ratio Drop rate Film section → Bending section 27 / 30 pieces 90％ Bend section 23 / 25 pieces 92％

[0100] The following table shows the chip drop ratio and chip drop rate of the display module using the cover plate of the embodiment of the present application in the subsequent production process. Each process section Film drop ratio Drop rate Film section → Bending section 0 / 100 pieces 0％ Bend section 0 / 100 pieces 0％

[0101] It can be seen from the above two tables that the display module using the cover plate of the embodiment of the present application can effectively avoid chip falling in the subsequent production process.

[0102] A third aspect of the present application provides a display device, which includes the display module of the second aspect. By adopting the display module of the second aspect in the display device, the yield rate of the display device product can be improved.

[0103] The display device provided in the embodiments of the present application may include a smart watch, an AR (augmented display) device, a VR (virtual reality) device, and the like.

[0104] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0106] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0107] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A protective film applied to a cover plate body having a spherical curved convex surface, characterized in that: The state of the protective film includes a plane state and a curved state, and the protective film is converted from the plane state to the curved state during the process of being attached to the convex surface of the cover plate body; When the protective film is in a curved state, the curved surface of the protective film matches the curved surface of the convex surface of the cover plate body; When the protective film is in a planar state, the protective film has at least one adjustment portion, which is used to adjust the curved surface shape of the protective film when the protective film is converted from a planar state to a curved surface state, so that the curved surface shape of the protective film is adapted to the curved surface shape of the convex surface of the cover body.

2. The protective film according to claim 1, characterized in that: At least two of the adjustment parts are distributed in a ring array on the protective film with the central axis of the protective film as the array axis.

3. The protective film according to claim 1, characterized in that: The adjusting portion has a central through hole and a bonding through hole, wherein the central through hole is a cylindrical hole and the bonding through hole is a fan-shaped hole; The central axis of the central through hole coincides with the central axis of the protective film, the bonding through hole has a first symmetry plane in the thickness direction of the protective film, and the central axis of the central through hole is located in the first symmetry plane.

4. The protective film according to claim 3, characterized in that: The central through hole has a bottom diameter R, wherein 1 mm≤R≤2 mm.

5. The protective film according to claim 3, characterized in that: The bonding through hole has a central angle β, wherein 2°≤β≤4°.

6. The protective film according to claim 3, characterized in that: The protective film further comprises a tearing hand assembly extending from the protective film, wherein the tearing hand assembly has a second symmetric plane in the thickness direction of the protective film, and an angle α is formed between the second symmetric plane and the first symmetric plane, wherein 30°<α<180°.

7. The protective film according to claim 6, characterized in that: The tearing hand assembly includes a connecting portion connected to the protective film, and a clamping portion connected to the connecting portion and used for clamping the protective film.

8. The protective film according to claim 7, characterized in that: The tearing hand assembly further includes a deformation portion, wherein the deformation portion is located between the connecting portion and the clamping portion, and the deformation portion has ductility to allow the distance between the connecting portion and the clamping portion to change.

9. The protective film according to claim 8, characterized in that: The projection of the deformation portion on the horizontal plane is in a Z shape.

10. A display module, characterized in that: It comprises a cover plate body and a display panel, and a protective film as described in any one of claims 1 to 9, wherein the protective film is adhered to the convex surface of the cover plate body, and the cover plate body is located on the light emitting side of the display panel.

11. A display device, characterized in that: Including the display module as claimed in claim 10.

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