Display module, display device and manufacturing method

Abstract

The present invention discloses a display module, a display device, and a manufacturing method, wherein the display module of one embodiment includes a display panel and a cover plate arranged on the light-emitting side of the display panel, the display panel includes a camera hole; the cover plate includes an ink ring corresponding to the camera hole, and at least one transparent film layer, wherein the ink ring includes a first inner circle close to the camera hole and a first outer circle away from the camera hole; the at least one transparent film layer includes a groove surrounding the first inner circle, and an annular support structure is provided in the groove; relative to the hole center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the first outer circle. The embodiment provided by the present invention effectively improves the strength of the cover plate by providing an annular support structure in the position corresponding to the camera hole in at least one transparent film layer of the cover plate, avoids stress concentration at the camera hole position, and improves the flatness of the camera hole position, thereby improving the shooting quality of the camera, improving the display defects existing in the related art, and effectively improving the display effect.

Description

Technical Field

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

[0002] With the rapid development of display technology, smartphone designs are gradually moving towards foldable designs. Due to the demand for foldable performance, the covers of foldable phones are made of foldable materials. As a result, the cover's support is not as good as that of conventional non-foldable phones. During use, consumers repeatedly press the camera hole. Because the foldable cover's support is not as good as that of a candy-bar phone, the camera hole of the smartphone display panel is susceptible to stress concentration, leading to cracks, which can cause display defects such as black spots around the edge of the camera hole (GDSH).

[0003] In addition, the cover of a foldable phone is usually made of flexible foldable material, so the support and flatness of the cover are not as good as those of a straight-screen phone. In particular, the peak-to-valley (PV) value at the camera hole position is often not as good as that of a straight-screen phone, affecting the shooting quality of the entire camera. Summary of the Invention

[0004] In order to solve at least one of the above problems, a first embodiment of the present invention provides a display module, comprising a display panel and a cover plate arranged on the light-emitting side of the display panel.

[0005] The display panel includes a camera hole;

[0006] The cover plate includes an ink ring corresponding to the camera hole and at least one transparent film layer, wherein:

[0007] The ink ring includes a first inner circle close to the camera hole and a first outer circle away from the camera hole;

[0008] The at least one transparent film layer comprises a groove surrounding the first inner circle, wherein an annular support structure is provided in the groove;

[0009] Relative to the hole center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the first outer circle.

[0010] For example, in the display module provided in some embodiments of the present application, in the direction from near to far from the display panel, the cover plate includes a first film layer, a second film layer, an ink ring, and a third film layer covering the ink ring and the second film layer, which are sequentially stacked on the display panel.

[0011] The second film layer includes a first slot surrounding the first inner circle;

[0012] The annular support structure includes a first annular support structure disposed in the first slot, the first annular support structure including a first inner diameter and a first outer diameter;

[0013] Relative to the hole center of the camera hole, the radius of the first inner circle is smaller than the first inner diameter, the first inner diameter is smaller than the radius of the camera hole, the radius of the camera hole is smaller than the first outer diameter, the first outer diameter is smaller than the radius of the first slot, and the radius of the first slot is smaller than the radius of the first outer circle.

[0014] For example, in the display module provided in some embodiments of the present application, in the direction from near to far from the display panel, the cover plate includes a first film layer, a second film layer, an ink ring, and a third film layer covering the ink ring and the second film layer, which are sequentially stacked on the display panel.

[0015] The second film layer includes a second groove surrounding the first inner circle;

[0016] The first film layer includes a third slot surrounding the first inner circle;

[0017] The annular support structure includes a second annular support structure disposed in the second slot, the second annular support structure including a second inner diameter and a second outer diameter;

[0018] The annular support structure includes a third annular support structure disposed in the third slot, the third annular support structure including a third inner diameter and a third outer diameter;

[0019] Relative to the hole center of the camera hole, the radius of the first inner circle is smaller than the second inner diameter, the radius of the first inner circle is smaller than the third inner diameter, the second inner diameter is smaller than the radius of the camera hole, the third inner diameter is smaller than the radius of the camera hole, the radius of the camera hole is smaller than the second outer diameter, the radius of the camera hole is smaller than the third outer diameter, the second outer diameter is smaller than the radius of the second slot, the third outer diameter is smaller than the radius of the third slot, the radius of the second slot is smaller than the radius of the first outer circle, and the radius of the third slot is smaller than the radius of the first outer circle.

[0020] For example, in the display module provided in some embodiments of the present application, relative to the hole center of the camera hole, the radius of the second groove is smaller than the radius of the third groove, the second inner diameter is less than or equal to the third inner diameter, and the second outer diameter is smaller than the third outer diameter.

[0021] For example, in the display module provided in some embodiments of the present application, the annular support structure includes a first adhesive layer, a support component, and a second adhesive layer sequentially stacked on the display panel;

[0022] In a direction perpendicular to the display panel, the surface of the first adhesive layer close to the display panel is flush with the surface of the transparent film layer close to the display panel, and the surface of the second adhesive layer away from the display panel is flush with the surface of the transparent film layer away from the display panel.

[0023] For example, in the display module provided in some embodiments of the present application, the supporting component is made of one of stainless steel, aluminum, titanium, and polyimide.

[0024] For example, in the display module provided in some embodiments of the present application, the orthographic projection of the first adhesive layer on the light-emitting surface of the display module covers the orthographic projection of the supporting component on the light-emitting surface of the display module;

[0025] The orthographic projection of the second adhesive layer on the light-emitting surface of the display module covers the orthographic projection of the supporting component on the light-emitting surface of the display module.

[0026] For example, in the display module provided in some embodiments of the present application, relative to the hole center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the groove.

[0027] A second embodiment of the present invention provides a display device including the display module described in the first embodiment.

[0028] A third embodiment of the present invention provides a method for manufacturing the display module described in the first embodiment, comprising:

[0029] forming a display panel, wherein the display panel includes a camera hole;

[0030] A cover plate is formed on the light-emitting side of the display panel, and the cover plate includes an ink ring corresponding to the camera hole, and at least one transparent film layer, wherein the ink ring includes a first inner circle close to the camera hole and a first outer circle away from the camera hole; the at least one transparent film layer includes a groove surrounding the first inner circle, and an annular support structure is provided in the groove; relative to the hole center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the first outer circle.

[0031] The beneficial effects of the present invention are as follows:

[0032] In response to the current existing problems, the present invention develops a display module, a display device and a manufacturing method. By setting an annular support structure in at least one transparent film layer of the cover plate at a position corresponding to the camera hole, the strength of the cover plate is effectively improved, stress concentration at the camera hole position is avoided, and the flatness of the camera hole position is improved, thereby improving the camera shooting quality, improving the display poor problem existing in the related technology, effectively improving the display effect, and having broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 A schematic diagram showing the structure of a display module in related art is shown;

[0035] Figure 2 A schematic diagram showing the deformation of a display module when subjected to external pressure in the related art;

[0036] Figure 3 A schematic structural diagram of a display module according to an embodiment of the present invention is shown;

[0037] Figure 4 A schematic top view of a display module according to an embodiment of the present invention is shown;

[0038] Figure 5 A schematic diagram showing the deformation of a display module when subjected to external pressure according to an embodiment of the present invention;

[0039] Figure 6 A flow chart showing a method for manufacturing a display module according to an embodiment of the present invention;

[0040] Figure 7 A schematic structural diagram of a display module according to another embodiment of the present invention is shown. DETAILED DESCRIPTION

[0041] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the following detailed description is illustrative rather than restrictive and should not be used to limit the scope of protection of the present invention.

[0042] It should be noted that the terms “on…”, “formed on…” and “disposed on…” herein may indicate that one layer is directly formed or disposed on another layer, or may indicate that one layer is indirectly formed or disposed on another layer, i.e., there are other layers between the two layers. In this article, unless otherwise specified, the term “located on the same layer” means that two layers, parts, components, elements or parts can be formed by the same patterning process, and that the two layers, parts, components, elements or parts are generally formed of the same material. In this article, unless otherwise specified, the expression “patterning process” generally includes steps such as coating, exposure, development, etching, and stripping of the photoresist. The expression “one-time patterning process” means a process of forming patterned layers, parts, components, etc. using a mask.

[0043] In related technologies, such as Figure 1 As shown, it is a structural schematic diagram of a foldable display module, including a support member 30, a display panel 10 and a cover plate 20, wherein the display panel 10 includes a display substrate 11, a polarizer 12, an adhesive layer 13 and a camera hole 14. In order to meet the folding requirements of the foldable display module, the cover plate 20 of the foldable display module generally includes a plurality of film layers arranged on the display panel 10, such as a protective film layer (PET) 21, an optical adhesive layer (OCA) 22, a colorless polyimide layer (CPI) 23 and a hard coating layer (HC) 24, and also includes an ink ring 25 arranged on the display panel 10.

[0044] However, in actual applications, the camera hole position of the folding display module of this structure is easily deformed when pressed. Figure 2 The diagram shows the deformation and stress distribution of the camera hole in a foldable display module after being pressed. The support strength of the foldable screen cover is not as strong as that of the glass cover of a straight-screen phone. During use, when the camera hole is pressed repeatedly or with a large force F, the cover deforms at the camera hole. When this force is transmitted to the camera hole in the display panel, the camera hole simultaneously deforms, generating a deformation C1. This creates a stress distribution C2 at the camera hole, which can cause stress concentration and fracture in the metal traces at the camera hole, leading to display defects such as GDSH. Furthermore, the reduced flatness of the cover at the camera hole after deformation increases the camera hole's PV value, affecting image quality.

[0045] In view of the above situation, if Figure 3-Figure 4 As shown, an embodiment of the present invention provides a display module, comprising a display panel 10 and a cover plate 20 arranged on the light emitting side of the display panel.

[0046] The display panel 10 includes a camera hole 14;

[0047] The cover plate 20 includes an ink ring 25 corresponding to the camera hole 14 and at least one transparent film layer, wherein:

[0048] The ink ring 25 includes a first inner circle 251 close to the camera hole and a first outer circle 252 away from the camera hole;

[0049] The at least one transparent film layer includes a groove 221 surrounding the first inner circle 251, and an annular support structure 40 is provided in the groove 221;

[0050] Relative to the hole center L of the camera hole 14 , the outer diameter of the annular support structure 40 is smaller than the radius of the first outer circle 252 .

[0051] In this embodiment, by providing an annular support structure 40 at a position corresponding to the camera hole 14 in at least one transparent film layer of the cover plate 20, the strength of the cover plate 20 can be effectively improved, stress concentration at the camera hole position can be avoided, and the flatness of the camera hole position can be improved, thereby improving the shooting quality of the camera, improving the display poor problem existing in the related technology, and effectively improving the display effect.

[0052] In a specific example, Figure 3-Figure 4 As shown, in the direction from near to far from the display panel 10, the cover plate 20 includes a first film layer 21, a second film layer 22, an ink ring 25, and a third film layer 23 covering the ink ring 25 and the second film layer 22, which are sequentially stacked on the display panel 10.

[0053] The ink ring 25 includes a first inner circle 251 close to the camera hole and a first outer circle 252 away from the camera hole. The second film layer 22 includes a first groove 221 surrounding the first inner circle 251. The first groove 221 is provided with an annular support structure 40.

[0054] The annular support structure 40 includes a first annular support structure disposed in the first slot 221 , and the first annular support structure 40 includes a first inner diameter and a first outer diameter;

[0055] Relative to the hole center L of the camera hole, the radius of the first inner circle is smaller than the first inner diameter, the first inner diameter is smaller than the radius of the camera hole, the radius of the camera hole is smaller than the first outer diameter, the first outer diameter is smaller than the radius of the first slot, and the radius of the first slot is smaller than the radius of the first outer circle.

[0056] Figure 3 To show the cross-sectional view of the module, Figure 4This is a top view of the display module. In this embodiment, a groove 221 is formed in the second film layer 22 of the cover plate 20, and an annular support structure 40 is formed within the groove. This creates a "sandwich" structure in the cover plate of the foldable display module, comprising the first film layer 21, the annular support structure 40 within the groove 221 of the second film layer 22, and the third film layer 23. This alleviates stress concentration at the camera hole of the display module. The display module also includes a fourth film layer 24 disposed on the third film layer 23 to further enhance the strength of the cover plate. Specifically, the first annular support structure includes an inner circle 401 close to the first inner circle 251 and an outer circle 402 away from the first inner circle 251; relative to the hole center L of the camera hole, the radius of the first inner circle 251 of the ink ring 25 is smaller than the radius of the inner circle 401 of the first annular support structure, the radius of the inner circle 401 of the first annular support structure is smaller than the radius of the camera hole 14 (the circle 141 on the display panel 10 is shown in the figure), the radius of the camera hole 14 is smaller than the first outer diameter, the first outer diameter is smaller than the radius of the first groove 221, and the radius of the first groove 221 is smaller than the radius of the first outer circle 252.

[0057] In this embodiment, the ink ring 25 is arranged on the side of the second film layer 22 away from the display panel, so as to use the ink ring to cover the traces of the groove 221 of the second film layer 22 and the annular support structure 40. Figure 5 As shown, this is a schematic diagram of the camera hole position of the display module of this embodiment being pressed by an external force F. The annular support structure 40 can effectively disperse the stress, and the cover plate 20 effectively improves the problem of stress concentration at the camera hole position by forming a "sandwich" structure, thereby avoiding obvious deformation of the camera hole position of the display panel.

[0058] Specifically, the schematic diagram of the camera hole position of the display module in the prior art being deformed when pressed by the external force F is compared. Figure 2 It can be seen that when the camera hole position of the display module is pressed by the external force F, the camera hole position of the cover of the folding display module in the related art is significantly deformed. The camera hole of the display panel deforms to produce a deformation amount C1, and the stress distribution C2 of the camera hole position of the display panel is as follows: Figure 5 As shown, the cover plate of the display module of this embodiment is provided with an annular support structure 40, which effectively improves the deformation problem of the camera hole position of the display module when it is subjected to an external force F. The deformation amount C1' generated by the deformation of the camera hole of the display panel is significantly smaller than Figure 2 The deformation C1 in the display panel shows that the stress distribution C2' at the camera hole position is significantly smaller than Figure 2 The stress distribution C2 in the display panel is reduced, thereby alleviating the problem of stress concentration at the camera hole position and improving the deformation problem of the camera hole position of the display panel.

[0059] It is worth noting that this embodiment is only used to illustrate a specific implementation method. This application does not specifically limit the cover plate structure of the foldable display module, nor does it specifically limit the position of the ink ring of the cover plate. The cover plate structure may include an ink ring covering the annular support structure and multiple transparent film layers including at least one annular support structure, or it may include only an ink ring and a transparent film layer, with the annular support structure disposed within the transparent film layer. Those skilled in the art should select an appropriate cover plate structure based on actual application requirements to achieve the purpose of disposing an annular support structure in the cover plate to improve the stress concentration problem at the camera hole position. All of these are within the scope of protection of this application and will not be further described here.

[0060] In a specific embodiment, Figure 3 As shown, the annular support structure 40 includes a first adhesive layer 41, a support component 42, and a second adhesive layer 43 sequentially stacked on the display panel 10;

[0061] In a direction perpendicular to the display panel, the surface of the first adhesive layer 41 close to the display panel 10 is flush with the surface of the transparent film layer 22 to which it belongs close to the display panel 10, and the surface of the second adhesive layer 43 away from the display panel 10 is flush with the surface of the transparent film layer 22 to which it belongs away from the display panel 10.

[0062] In this embodiment, the annular support structure adopts a "sandwich" structure in which a first adhesive layer 41, a support component 42 and a second adhesive layer 43 are stacked. On the one hand, the adhesion performance of the annular support structure to the adjacent film layer is ensured. On the other hand, the annular support structure 40 is aligned with the side of the transparent film layer 22 to which it belongs, which is close to the display panel and the side away from the display panel, through the first adhesive layer 41 and the second adhesive layer 43, thereby ensuring that there is no step difference between the annular support structure and the transparent film layer 22 to which it belongs, thereby improving the flatness of the cover plate of the folding display module, and improving the display effect of the display module while improving the stress concentration problem of the camera hole of the display module.

[0063] In this embodiment, the support member is made of one of stainless steel, aluminum, titanium, and polyimide. The support member's hardness and strength are both higher than those of the transparent film layers of the cover, thereby increasing the cover's strength and dissipating stress at the camera hole. The first and second adhesive layers are made of optical adhesive, other adhesives, or resins.

[0064] Taking into account the adhesive performance and optical effect between the annular support structure and the adjacent film layer, in an optional embodiment, the orthographic projection of the first adhesive layer on the light-emitting surface of the display module covers the orthographic projection of the supporting component on the light-emitting surface of the display module; the orthographic projection of the second adhesive layer on the light-emitting surface of the display module covers the orthographic projection of the supporting component on the light-emitting surface of the display module.

[0065] In this embodiment, the first adhesive layer completely covers the supporting component, and the second adhesive layer completely covers the supporting component, thereby ensuring the stability of the annular supporting structure and the bonding performance with adjacent film layers, effectively improving the display performance of the display module.

[0066] like Figure 4 As shown, it is a top view schematic diagram of the concentric circles formed by various structures in a display module provided with an annular support structure 40, including the circle 141 corresponding to the camera hole 14, the first inner circle 251 and the first outer circle 252 of the ink ring 25, the groove 221 of the second film layer 22, and the inner circle 401 and the outer circle 402 of the annular support structure 40. The ink ring 25 has the largest coverage area and has a shielding effect. The ink area formed by the first outer circle 252 and the first inner circle 251 of the ink ring 25 covers the inner circle 401 and the outer circle 402 of the annular support structure 40. The support area formed by the inner circle 401 and the outer circle 402 of the annular support structure 40 covers the circle 141 of the camera hole 14 of the display panel. The radius of the groove 221 of the second film layer 22 is larger than the outer circle 402 of the annular support structure 40, thereby forming a partially overlapping arrangement of the various structures.

[0067] like Figure 3 and Figure 4 As shown, there is a gap 45 between the groove 221 of the second membrane layer 22 and the annular support structure 40. Specifically, relative to the hole center L of the camera hole 14, the outer diameter of the annular support structure 40 is smaller than the radius of the groove 221. For example, the radius difference between the outer diameter and the radius of the groove is less than or equal to 0.15 mm.

[0068] The second film layer 22 of this embodiment is provided with a gap 45 between the groove 221 and the annular support structure 40, which can meet the tolerance formed by the manufacturing process, and at the same time meet the deformation amount of the annular support structure 40 and the adjacent film layers when the folding display module is folded, thereby further improving the flatness of the camera hole position of the cover plate, reducing the PV value of the camera hole, and effectively improving the shooting quality of the camera.

[0069] To further illustrate the specific structure of this embodiment, in a specific example, Figure 6 As shown, the manufacturing of the display module of this embodiment is taken as an example for description, which specifically includes the following steps:

[0070] The first step is to form a display panel.

[0071] In this embodiment, if Figure 3As shown, a display substrate 11, a polarizer 12, and an adhesive layer 13 are formed to form a display panel 10, wherein the display substrate includes, for example, a driving circuit layer, an electroluminescent diode light-emitting functional layer and an encapsulation layer stacked on a substrate. After the display panel is formed, the display substrate 11, the polarizer 12, and the adhesive layer 13 are subjected to an integrated cutting process to form a camera hole 14.

[0072] It is worth noting that, for a foldable display module, a support member 30 is usually formed on the backlight side of the display panel.

[0073] Considering the integrity of the display content of the display panel, such as Figure 3 and Figure 4 The display panel also includes a display outer circle 142 away from the camera aperture. Relative to the camera aperture center L, the radius of the display outer circle 142 is greater than the radius of the first outer circle 252 of the ink ring. The display outer circle 142 is the boundary of the display area set by the display panel, that is, the boundary of each sub-pixel, thereby preventing the ink ring from obstructing the displayed content.

[0074] It is worth noting that this embodiment is only used to illustrate a specific implementation method. This application does not specifically limit the structure of the ink ring and the display outer circle. For example, the radius of the display outer circle is less than or equal to the radius of the first outer circle, that is, the display content of some sub-pixels in the display area of ​​the display panel close to the camera hole is sacrificed; those skilled in the art should select an appropriate structure according to actual application requirements, and will not go into details here.

[0075] The second step is to form a cover plate on the light-emitting side of the display panel.

[0076] In this embodiment, transparent film layers and ink rings are formed on the display panel. Considering the shielding effect of the ink ring on the camera hole of the display panel and the annular support structure built into the cover plate, the ink ring is usually arranged on the side of the annular support structure away from the display panel, thereby shielding the boundary of the camera hole and the annular support structure to improve the appearance of the display module.

[0077] Specifically, such as Figure 3 As shown, a first film layer 21 and a second film layer 22 are respectively formed on the display panel, a groove 221 is opened on the second film layer 22, and an annular support structure 40 is formed in the groove 221. For example, a first adhesive layer, a supporting component and a second adhesive layer are sequentially formed in the groove 221, or, for example, the formed annular support structure is placed in the groove 221, and then an ink ring 25, a third film layer 23 and a fourth film layer 24 are sequentially formed on the second film layer 22 and the annular support structure 40, thereby forming a cover plate.

[0078] This completes the fabrication of the display module of this embodiment. By providing an annular support structure in at least one transparent film layer of the cover plate at a location corresponding to the camera hole, this embodiment effectively improves the strength of the cover plate, avoids stress concentration at the camera hole location, and simultaneously improves the flatness of the camera hole location, thereby enhancing camera capture quality, resolving display defects that exist in related technologies, and effectively enhancing the display quality of the display module.

[0079] In another optional embodiment, Figure 7 As shown, in the direction from near to far from the display panel 10, the cover plate 20 includes a first film layer 21, a second film layer 22, an ink ring 25, and a third film layer 23 covering the ink ring 25 and the second film layer 22, which are sequentially stacked on the display panel.

[0080] The second film layer 22 includes a second groove 221 surrounding the first inner circle;

[0081] The first film layer 21 includes a third slot 211 surrounding the first inner circle;

[0082] The annular support structure includes a second annular support structure 40 disposed in the second slot 221 , wherein the second annular support structure 40 includes a second inner diameter and a second outer diameter;

[0083] The annular support structure includes a third annular support structure 50 disposed in the third slot 211 , wherein the third annular support structure 50 includes a third inner diameter and a third outer diameter;

[0084] Relative to the hole center L of the imaging hole 14, the first inner radius of the ink ring 25 is smaller than the radius of the inner circle 401 of the second annular support structure, that is, the second inner diameter of the second annular support structure. The first inner radius of the ink ring 25 is smaller than the radius of the inner circle 501 of the third annular support structure, that is, the third inner diameter of the third annular support structure. The second inner diameter is smaller than the radius of the imaging hole 14. The third inner diameter is smaller than the radius of the imaging hole 14. The radius of the imaging hole 14 is smaller than the radius of the outer circle 402 of the second annular support structure, that is, the second outer diameter of the second annular support structure. The radius of the imaging hole 14 is smaller than the radius of the outer circle 502 of the third annular support structure, that is, the third outer diameter of the third annular support structure. The second outer diameter is smaller than the radius of the second groove 221. The third outer diameter is smaller than the radius of the third groove 211. The radius of the second groove 221 is smaller than the first outer radius of the ink ring 25. The radius of the third groove 211 is smaller than the first outer radius of the ink ring 25.

[0085] In this embodiment, annular support structures are respectively provided in the two transparent film layers of the cover plate, that is, a groove 211 is opened in the first film layer 21, and the first adhesive layer 51, the supporting component 52 and the second adhesive layer 53 of the third annular support structure 50 are formed in the groove 211; a groove 221 is opened in the second film layer 22, and the first adhesive layer 41, the supporting component 42 and the second adhesive layer 43 of the second annular support structure 40 are formed in the groove 221, that is, the third annular support structure is a "sandwich" structure, and the second annular support structure is also a "sandwich" structure. By providing two layers of support structures in the cover plate, the external pressure on the camera hole position is further dispersed, the stress concentration problem of the camera hole of the display module is improved, and the display effect of the display module is improved.

[0086] In order to further improve the strength of the cover plate, in an optional embodiment, as Figure 7 As shown, relative to the hole center L of the camera hole, the radius of the second slot 221 is smaller than the radius of the third slot 211, the second inner diameter of the second annular support structure is smaller than or equal to the third inner diameter of the third annular support structure, and the second outer diameter of the second annular support structure is smaller than the third outer diameter of the third annular support structure.

[0087] In this embodiment, with respect to the annular support structure formed in the two film layers of the cover plate, the inner diameter and outer diameter of the third annular support structure close to the display panel and the second annular support structure away from the display panel are further limited to be stepped, thereby further dispersing the external pressure on the camera hole position, improving the stress concentration problem of the camera hole of the display module, and improving the display effect of the display module.

[0088] It is worth noting that this embodiment is only used to illustrate a specific implementation method. This application does not specifically limit the number of transparent film layers of the cover plate. At the same time, this application does not specifically limit the number of annular support structures formed. The more annular support structures are set, the more dispersed the stress on the camera hole position. Those skilled in the art should select an appropriate number of cover plate film layers and annular support structures according to actual application requirements, and will not go into details here.

[0089] With respect to the multiple annular support structures of this embodiment, each annular support structure comprises a first adhesive layer proximal to the display panel, a second adhesive layer distal to the display panel, and a support member disposed between the first and second adhesive layers, with the first and second adhesive layers completely covering the support member. The support member is made of one of stainless steel, aluminum, titanium, or polyimide, and the first and second adhesive layers are made of optical adhesive or other adhesive or resin materials. Furthermore, each annular support structure is flush with the corresponding transparent film layer on both the side proximal to the display panel and the side distal to the display panel, thereby improving the flatness of the cover plate and, in turn, the camera's image quality. A gap exists between each annular support structure and the slot of the corresponding transparent film layer, for example, a gap of less than or equal to 0.15 mm, to meet tolerances during the display module manufacturing process and to minimize the deformation of the annular support structure 40 and the adjacent film layers when the foldable display module is folded. This further improves the flatness of the cover plate's camera aperture, reduces the camera aperture's PV value, and effectively enhances camera image quality.

[0090] Based on the above display module, another embodiment of the present invention provides a display device including the display module of the above embodiment.

[0091] The display device of this embodiment effectively improves the strength of the cover plate by providing an annular support structure in at least one transparent film layer of the cover plate, corresponding to the camera hole. This structure prevents stress concentration at the camera hole location and improves the flatness of the camera hole location, thereby improving camera shooting quality, remedying the display defects present in related technologies, and effectively enhancing the display effect. The display device of this embodiment can be a foldable display device, such as a foldable electronic paper, a foldable smartphone, a foldable tablet computer, or any other product or component with a display function, which is not limited in this embodiment.

[0092] Based on the above display module, another embodiment of the present invention provides a method for manufacturing the above display module, such as Figure 6 As shown, including:

[0093] forming a display panel, wherein the display panel includes a camera hole;

[0094] A cover plate is formed on the light-emitting side of the display panel, and the cover plate includes an ink ring corresponding to the camera hole, and at least one transparent film layer, wherein the ink ring includes a first inner circle close to the camera hole and a first outer circle away from the camera hole; the at least one transparent film layer includes a groove surrounding the first inner circle, and an annular support structure is provided in the groove; relative to the hole center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the first outer circle.

[0095] The display module of this embodiment effectively improves the strength of the cover plate by setting an annular support structure in the position corresponding to the camera hole in at least one transparent film layer of the cover plate, avoiding stress concentration at the camera hole position, and at the same time improving the flatness of the camera hole position, thereby improving the camera shooting quality, improving the display poor problem existing in related technologies, and effectively improving the display effect.

[0096] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A display module, characterized in that: It includes a display panel and a cover plate arranged on the light-emitting side of the display panel. The display panel includes a camera hole; The cover plate includes an ink ring corresponding to the camera hole and at least one transparent film layer, wherein: The ink ring includes a first inner circle close to the camera hole and a first outer circle away from the camera hole; The at least one transparent film layer comprises a groove surrounding the first inner circle, wherein an annular support structure is provided in the groove; Relative to the center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the first outer circle; In the direction from near to far from the display panel, the cover plate includes a first film layer, a second film layer, an ink ring, and a third film layer covering the ink ring and the second film layer, which are sequentially stacked on the display panel. The second film layer includes a first slot surrounding the first inner circle; The annular support structure includes a first annular support structure disposed in the first slot, the first annular support structure including a first inner diameter and a first outer diameter; Relative to the hole center of the camera hole, the radius of the first inner circle is smaller than the first inner diameter, the first inner diameter is smaller than the radius of the camera hole, the radius of the camera hole is smaller than the first outer diameter, the first outer diameter is smaller than the radius of the first slot, and the radius of the first slot is smaller than the radius of the first outer circle.

2. A display module, characterized in that: It includes a display panel and a cover plate arranged on the light-emitting side of the display panel. The display panel includes a camera hole; The cover plate includes an ink ring corresponding to the camera hole and at least one transparent film layer, wherein: The ink ring includes a first inner circle close to the camera hole and a first outer circle away from the camera hole; The at least one transparent film layer comprises a groove surrounding the first inner circle, wherein an annular support structure is provided in the groove; Relative to the center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the first outer circle; In the direction from near to far from the display panel, the cover plate includes a first film layer, a second film layer, an ink ring, and a third film layer covering the ink ring and the second film layer, which are sequentially stacked on the display panel. The second film layer includes a second groove surrounding the first inner circle; The first film layer includes a third slot surrounding the first inner circle; The annular support structure includes a second annular support structure disposed in the second slot, the second annular support structure including a second inner diameter and a second outer diameter; The annular support structure includes a third annular support structure disposed in the third slot, the third annular support structure including a third inner diameter and a third outer diameter; Relative to the hole center of the camera hole, the radius of the first inner circle is smaller than the second inner diameter, the radius of the first inner circle is smaller than the third inner diameter, the second inner diameter is smaller than the radius of the camera hole, the third inner diameter is smaller than the radius of the camera hole, the radius of the camera hole is smaller than the second outer diameter, the radius of the camera hole is smaller than the third outer diameter, the second outer diameter is smaller than the radius of the second slot, the third outer diameter is smaller than the radius of the third slot, the radius of the second slot is smaller than the radius of the first outer circle, and the radius of the third slot is smaller than the radius of the first outer circle.

3. The display module according to claim 2, wherein: Relative to the hole center of the camera hole, the radius of the second slot is smaller than the radius of the third slot, the second inner diameter is smaller than or equal to the third inner diameter, and the second outer diameter is smaller than the third outer diameter.

4. The display module according to any one of claims 1 to 3, wherein: The annular support structure includes a first adhesive layer, a support component, and a second adhesive layer sequentially stacked on the display panel; In a direction perpendicular to the display panel, the surface of the first adhesive layer close to the display panel is flush with the surface of the transparent film layer close to the display panel, and the surface of the second adhesive layer away from the display panel is flush with the surface of the transparent film layer away from the display panel.

5. The display module according to claim 4, wherein: The supporting component is made of one of stainless steel, aluminum, titanium and polyimide.

6. The display module according to claim 4, wherein: The orthographic projection of the first adhesive layer on the light-emitting surface of the display module covers the orthographic projection of the supporting component on the light-emitting surface of the display module; The orthographic projection of the second adhesive layer on the light-emitting surface of the display module covers the orthographic projection of the supporting component on the light-emitting surface of the display module.

7. The display module according to claim 4, wherein: Relative to the center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the slot.

8. A display device, characterized in that: The invention comprises a display module as claimed in any one of claims 1 to 7.

9. A method for manufacturing a display module according to any one of claims 1 to 7, characterized in that: include: forming a display panel, wherein the display panel includes a camera hole; A cover plate is formed on the light-emitting side of the display panel, and the cover plate includes an ink ring corresponding to the camera hole, and at least one transparent film layer, wherein the ink ring includes a first inner circle close to the camera hole and a first outer circle away from the camera hole; the at least one transparent film layer includes a groove surrounding the first inner circle, and an annular support structure is provided in the groove; relative to the hole center of the camera hole, the outer diameter of the annular support structure is smaller than the radius of the first outer circle.

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