Display module and display device

Abstract

The invention relates to a display module and a display device, the display module comprises a display panel, a bonding layer and a cover plate which are stacked, and the cover plate comprises a straight area and a curved surface area which are adjacently arranged; the ink structure is located between the cover plate of the curved surface area and the bonding layer; the ink structure is provided with a missing part at the joint of the end face facing the straight area and the side face deviating from the cover plate. According to the display module, due to the arrangement of the missing part, the gas moving from the straight area can be gathered and locked to the side, away from the cover plate, of the ink structure, the gathered gas is shielded by the ink structure when observed from the front face of the display module, and therefore the problem that the gas appears in the display area is effectively solved, and the product yield is increased.

Description

Technical Field

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

[0002] With the development of display technology, the organic light-emitting diode (OLED) curved screen currently on the market is popular in the market because of its novel and high-end shape and its ability to better fit the curve of the hand.

[0003] Since the display cover is made into a curved surface (quadruple or double curvature), during the bonding process with the display panel, due to the early air entrapment at the curved surface (mostly due to the sudden bend of the display cover at the edge area, which easily causes the outer edge of the cover to contact the display panel first), it is necessary to use a degassing furnace and other equipment for degassing. The degassing process has a large amount of trapped air or the UV (Ultraviolet) curing process has a high temperature, resulting in problems such as incomplete degassing or re-bubbling, which will form visible bubbles at the edge of the ink, affecting the product yield. Summary of the invention

[0004] Based on this, it is necessary to provide a display module and a display device, which are intended to solve the problems of degassing that cannot be completely removed or re-bubbling during the bonding process of the curved display cover and the display panel.

[0005] In the first aspect, an embodiment of the present application provides a display module, comprising a stacked display panel, an adhesive layer and a cover plate, the cover plate comprising a flat area and a curved area arranged adjacent to each other; and an ink structure located between the cover plate and the adhesive layer in the curved area; wherein the ink structure has a missing portion at the connection between the end face facing the flat area and the side facing away from the cover plate.

[0006] In a second aspect, an embodiment of the present application further provides a display device, which includes the display module provided in the first aspect.

[0007] The display module and display device provided by the embodiment of the present application are provided with an ink structure on the side of the cover plate facing the display panel, and a missing portion is constructed at the connection between the end face of the ink structure facing the straight area and the side facing away from the cover plate. The missing portion can be filled with the adhesive layer gradually filling the end face of the ink structure facing the straight area during the bonding process between the cover plate and the display panel to accommodate the gas moving from the straight area, thereby effectively avoiding the generation of bubbles in the adhesive layer during the bonding process between the cover plate and the display panel. As the adhesive layer solidifies, the gas located in the missing portion can be locked to avoid the problem of the gas returning to the straight area again. The above-mentioned missing portion can gather and lock the gas that has moved from the straight area to the side of the ink structure facing away from the cover plate (i.e., below the ink structure). When observed from the front of the display module, the ink structure blocks the gathered gas, thereby effectively solving the problem of gas appearing in the display area and improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 A schematic diagram of the structure of a display module provided in an embodiment of the present application;

[0009] Figure 2 for Figure 1 A-A' cross-sectional schematic diagram;

[0010] Figure 3 A cross-sectional schematic diagram of a display module provided in an embodiment of the present application;

[0011] Figure 4 for Figure 3 A schematic diagram of the structure enlarged at B in the middle;

[0012] Figure 5 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application;

[0013] Figure 6 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application;

[0014] Figure 7 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application;

[0015] Figure 8 A schematic diagram of the structure of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0016] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0018] When describing positional relationships, unless otherwise specified, when an element such as a layer, film, or substrate is referred to as being "on" another element, it can be directly on the other element or there may be intervening elements. Further, when a layer is referred to as being "under" another layer, it can be directly under or there may be one or more intervening elements. It is also understood that when a layer is referred to as being "between" two layers, it can be the only layer between the two layers or there may be one or more intervening elements.

[0019] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0020] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present application.

[0021] It should also be understood that when interpreting an element, even if not explicitly described, the element is interpreted as including a range of error, which should be within the acceptable deviation range of the specific value determined by those skilled in the art. For example, "approximately", "approximately" or "substantially" can mean within one or more standard deviations, which are not limited here.

[0022] Furthermore, in the specification, the phrase “planar distribution schematic diagram” refers to a drawing when a target portion is viewed from above, and the phrase “cross-sectional schematic diagram” refers to a drawing when a section taken by vertically cutting the target portion is viewed from the side.

[0023] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0024] As described in the background technology section, the curved (quad-curved or hyperbolic) display cover in the related technology is that during the bonding process of the display panel, bubbles are easily formed at the curved surface, thereby forming visible bubbles in the visible area of ​​the ink edge, and the yield of the imaging product. The inventor found that the reason for the above phenomenon is that during the bonding process of the curved (quad-curved or hyperbolic) display cover with the display panel, there is early air entrapment at the curved surface. Most of them are caused by the sudden bending of the display cover in the edge area, which easily causes the outer edge of the cover to contact the display panel body first, and it is necessary to use a degassing furnace and other equipment for degassing. There are problems such as a large amount of trapped air in the degassing process or a high temperature in the UV (Ultraviolet) curing process, which may cause the degassing to be unable to be completely removed or re-bubbling, thereby forming visible bubbles at the edge of the ink, affecting the product yield.

[0025] Based on the above technical problems, the inventors have found that by adding an ink coating layer and staggering it with the ink layer close to the cover plate, the bubbles can be gathered under the ink, thereby reducing the visible bad ratio of bubbles. Based on this, the inventors have further studied the technical solution of the embodiment of the present application. Specifically, the display module provided by the embodiment of the present application includes a stacked display panel, an adhesive layer, a cover plate and an ink structure, the cover plate includes a straight area and a curved area arranged adjacently; the ink structure is located between the cover plate and the adhesive layer in the curved area, and the ink structure has a missing portion at the connection between the end face facing the straight area and the side facing away from the cover plate.

[0026] By adopting the above technical solution, an ink structure is arranged on the side of the cover plate facing the display panel, and a missing part is constructed at the connection between the end face of the ink structure facing the straight area and the side facing away from the cover plate. The missing part can gradually fill the end face of the ink structure facing the straight area with the adhesive layer during the bonding process between the cover plate and the display panel to accommodate the gas moving from the straight area, thereby effectively avoiding the generation of bubbles in the adhesive layer during the bonding process between the cover plate and the display panel. As the adhesive layer solidifies, the gas located in the missing part can be locked to avoid the problem of the gas returning to the straight area again. The above missing part can gather and lock the gas that has moved from the straight area to the side of the ink structure facing away from the cover plate, and by gathering the gas in an invisible area, the problem of gas appearing in the display area is effectively solved, thereby improving the product yield.

[0027] The above is the core idea of ​​this application. The technical solutions in the embodiments of this application will be described clearly and completely below in conjunction with the drawings in the embodiments of this application. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0028] Figure 1 A schematic diagram of the structure of a display module provided in an embodiment of the present application; Figure 2for Figure 1 Schematic diagram of the cross section of A-A'. Figure 1 and Figure 2 As shown, the display module provided by the embodiment of the present application may include a display panel 110, an adhesive layer 120, a cover plate 130 and an ink structure 140, wherein the display panel 110, the adhesive layer 120 and the cover plate 130 are stacked, and the cover plate 130 includes a straight area and a curved area arranged adjacent to each other. The ink structure 140 is located between the cover plate 130 and the adhesive layer 120 in the curved area; the ink structure 140 has a missing portion 1401 at the connection between the end surface facing the straight area and the side facing away from the cover plate 130.

[0029] Specifically, the cover plate 130 of the display module has a straight area and a curved area arranged adjacent to each other, for example, the straight area is located in the center, and the curved area is arranged around the straight area. In one example, the straight area can be defined as a display area, and the curved area can be defined as a non-display area. The ink structure 140 is arranged around the straight area of ​​the display module to absorb light emitted from the display area to the edge of the cover plate 130 to prevent light leakage from the edge of the cover plate 130. The ink structure 140 is at a certain distance from the display area to prevent ink from overflowing into the display area.

[0030] The ink structure 140 is arranged on the side of the cover plate 130 facing the display panel 110, and the ink structure 140 is configured with a missing portion 1401 at the connection between the end surface facing the straight area and the side away from the cover plate 130, that is, a notch is opened at the corner of the ink structure 140. The above-mentioned notch can be formed by coating a layer of ink 141 on the cover plate 130 and removing the end of the ink layer 141 close to the straight area, or it can be formed by coating at least two layers of ink layers 141 on the surface of the cover plate 130 and staggering the coated ink layers 141, that is, the distance between the end of at least one layer of ink layer 141 away from the cover plate 130 and the straight area is greater than the distance between the end of the layer of ink layer 141 close to the back plate and the straight area. The process of arranging the above-mentioned ink structure 140 on the surface of the cover plate 130 can be to apply ink to the inner surface of the cover plate 130 in the curved area through a screen printing process, but it is not specifically limited.

[0031] In this example, the adhesive layer 120 is an optically clear adhesive (OCA), which is used to attach to the entire area between the cover plate 130 and the display panel 110. During the bonding process, the optical adhesive is first applied to the inner surface of the flat area of ​​the cover plate 130, and then the optical adhesive is covered on the ink structure 140, and finally the display panel 110 is bonded to the side of the optical adhesive away from the cover plate 130. When the optical adhesive is applied, it is in a liquid state, can flow and has a certain viscosity. After being applied, the optical adhesive can be cured by long-term curing, curing under light conditions (UV) or curing under heating conditions.

[0032] During the bonding process, the optical adhesive gradually flows or is applied from the flat area (display area) in the center of the cover plate 130 to the curved area (non-display area). During the optical adhesive and coating process, the gas in the flat area is squeezed to the end surface of the ink structure 140 in the curved area close to the flat area. Then, as the optical adhesive fills the end surface of the ink structure 140, the gas at the end surface is gradually squeezed to the missing portion 1401 and locked in the missing portion 1401 by the optical adhesive. After the optical adhesive is applied, it is cured by long-term curing, curing under light conditions (UV), or curing under heating conditions. Therefore, during the above bonding process, the gas in the flat area of ​​the cover plate 130 can be gradually squeezed to the curved area. After the optical adhesive is cured, the gas locked in the missing portion 1401 of the ink structure 140 can be permanently isolated and will not return to the flat area. It can be seen that by setting the missing part 1401 at the corner of the ink structure 140 close to the straight area, when the cover plate 130 and the display panel 110 are attached, the optical adhesive can be attached to the entire area between the cover plate 130 and the display panel 110, and the missing part 1401 can store and lock the gas from the straight area, thereby avoiding the problem of visible bubbles at the edge of the ink.

[0033] In summary, the display module provided by the embodiment of the present application is provided with an ink structure 140 on a side of the cover plate 130 facing the display panel 110, and a missing portion 1401 is constructed at the connection between the end surface of the ink structure 140 facing the straight area and the side away from the cover plate 130. The missing portion 1401 can gradually fill the end surface of the ink structure 140 facing the straight area during the bonding process of the cover plate 130 and the display panel 110 with the adhesive layer 120 to accommodate the gas moving from the straight area, thereby effectively preventing the adhesive layer 120 from generating bubbles during the bonding process of the cover plate 130 and the display panel 110. As the adhesive layer 120 solidifies, the gas located in the missing portion 1401 can be locked to prevent the problem of the gas returning to the straight area again. The missing portion 1401 can gather and lock the gas that has moved from the straight area to the side of the ink structure 140 that is away from the cover plate 130, that is, below the ink structure. When observing from the front of the display module, the ink structure blocks the gathered gas, thereby effectively solving the problem of gas appearing in the display area and improving product yield.

[0034] Next, we will combine the attached Figure 1 -Attached Figure 7 The specific structure of the display module provided in the embodiment of the present application is introduced. Figure 3 A cross-sectional schematic diagram of a display module provided in an embodiment of the present application; Figure 4 for Figure 3 A schematic diagram of the structure enlarged at B in the middle; Figure 5 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application; Figure 6 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application; Figure 7 A cross-sectional schematic diagram of another display module provided in an embodiment of the present application.

[0035] like Figure 3 and Figure 4 As shown, in some embodiments, along the stacking direction of the cover plate 130 and the display panel 110 , the orthographic projection of the missing portion 1401 is located within the orthographic projection area of ​​the ink structure 140 .

[0036] Specifically, the stacking direction of the cover plate 130 and the display panel 110 is the thickness direction of the ink structure 140. In order to gather the gas in an invisible area, that is, to gather the gas on the side of the ink structure 140 facing away from the cover plate 130, therefore, along the thickness direction of the ink structure 140, the orthographic projection of the missing portion 1401 should be located within the orthographic projection area of ​​the ink structure 140. In other words, the missing portion 1401 is located on the side of the ink structure 140 facing away from the cover plate 130. In order to facilitate the gas to enter the missing portion 1401, the missing portion 1401 is also located on the partial end surface of the ink structure 140 close to the straight area.

[0037] By reasonably setting the position of the missing portion 1401, it can be ensured that during the extrusion process, the gas in the straight area is squeezed to the missing portion 1401 along with the optical glue, and the gas located at the missing portion 1401 can be completely blocked by the ink structure 140, so that there are no bubbles in the display area, thereby improving the product yield.

[0038] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, in some embodiments, the surface of the ink structure 140 that is located outside the missing portion 1401 and faces away from the cover plate 130 is in contact with the adhesive layer 120 .

[0039] Specifically, the missing portion 1401 in this example is disposed at the connection between the end surface of the ink structure 140 facing the straight region and the side facing away from the cover plate 130, that is, the missing portion 1401 is formed at the corner of the ink structure 140, and the surfaces of the ink structure 140 other than the corner facing away from the cover plate 130 are all in contact with the adhesive layer 120. In other words, during the bonding process, the optical adhesive is first applied to the inner surface of the straight region of the cover plate 130, and then the optical adhesive is covered on the side of the ink structure 140 facing away from the cover plate 130 (except the missing portion 1401), so as to ensure that the ink structure 140 can be bonded to the corresponding display panel 110.

[0040] It is understandable that in this example, there is no need to open an exhaust channel in the cover plate 130 or the ink structure 140, and the gas after extrusion can be hidden and locked only by the setting of the missing portion 1401. This setting makes the structure of the display module simpler and more conducive to processing and manufacturing.

[0041] like Figure 2 and Figure 3 As shown, in some embodiments, along the stacking direction of the cover plate 130 and the display panel 110 , the size of the end surface of the ink structure 140 facing the straight area is smaller than the size of the portion of the ink structure 140 located outside the missing portion 1401 .

[0042] Specifically, in order to more clearly understand the formation of the missing portion 1401 at the corner of the ink structure 140, it can be understood with the help of the thickness of the ink structure 140. The missing portion 1401 is a notch formed at the corner of the ink structure 140. Regardless of the shape of the notch, the thickness of the end surface of the ink structure 140 facing the straight area will be less than the thickness of the ink structure 140 located outside the missing portion 1401 (away from the straight area). This example does not limit the shape and size of the notch, but it is necessary to ensure that the gas squeezed to the missing portion 1401 can be blocked by the ink structure 140 close to the straight area, thereby effectively eliminating bubbles in the display area and improving the product yield.

[0043] like Figure 2 and Figure 3 As shown, in some embodiments, along the stacking direction of the cover plate 130 and the display panel 110 , the ink structure 140 includes at least two ink layers 141 stacked in sequence.

[0044] Specifically, two ink layers 141 may be arranged in a direction away from the cover plate 130 , but the two ink layers 141 are at different distances from the straight area, so that the missing portion 1401 is formed by the misalignment of the two ink layers 141 to accommodate gas flowing from the straight area to the curved area.

[0045] The thickness of the two ink layers 141 is relatively small, that is, the height difference between the cover plate 130 and the display panel 110 is relatively small, so the thickness of the adhesive layer 120 (optical glue) used is relatively thin. Not only is it not easy to generate adhesion bubbles during the bonding process of the cover plate 130 and the display panel 110, but the two ink layers 141 have a missing portion 1401 on the side close to the flat area. The missing portion 1401 can accommodate bubbles in the bonding process of the cover plate 130 and the display panel 110, thereby converging the bubbles on the side of the ink layer 141 away from the cover plate 130, so that the bubbles are gathered in the invisible area.

[0046] It should be noted that the thickness of each ink layer 141 can be the same or different, and can be set according to the actual ink laying process, the size of the missing portion 1401, etc., and is not limited here.

[0047] To make it clearer how the two ink layers 141 form the missing portion 1401, Figure 2 As shown, in some embodiments, in two adjacent ink layers 141, the distance between the ink layer 141 close to the cover plate 130 and the straight area is smaller than the distance between the ink layer 141 away from the cover plate 130 and the straight area, so that a missing portion 1401 is formed by the end face of the ink layer 141 away from the cover plate 130 and the side face of the adjacent ink layer 141.

[0048] Specifically, an ink layer 141 close to the cover plate 130 can be set according to a conventional method, which can include the distance between the ink layer 141 and the flat area. Of course, the thickness of the ink layer 141 can be slightly less than the conventional thickness to facilitate the superposition of the second ink layer 141.

[0049] The distance between a layer of ink layer 141 away from the cover plate 130 and the straight area is greater than the distance between a layer of ink layer 141 close to the cover plate 130 and the straight area, so that the missing portion 1401 is formed by the end surface of the ink layer 141 away from the cover plate 130 and the side surface of the adjacent ink layer 141, that is, the space between the end surface of the ink layer 141 away from the cover plate 130 and the straight area forms the missing portion 1401. This arrangement is conducive to the formation of the missing portion 1401, thereby improving the manufacturing efficiency.

[0050] like Figure 3 and Figure 4 As shown, in some embodiments, the ink structure 140 includes a first ink layer 142, a second ink layer 143, and a third ink layer 144 stacked in a direction away from the cover plate 130, the distance between the first ink layer 142 and the straight region is smaller than the distance between the second ink layer 143 and the straight region, and the distance between the second ink layer 143 and the straight region is smaller than the distance between the third ink layer 144 and the straight region. The end surface of the third ink layer 144 close to the straight region and the side surface of the adjacent second ink layer 143, as well as the end surface of the second ink layer 143 close to the straight region and the side surface of the adjacent first ink layer 142 form a missing portion 1401.

[0051] It can be understood that in addition to the above-mentioned form of setting two ink layers 141 on one side of the cover plate 130, the ink structure 140 can also stack three ink layers 141 on the inner side of the cover plate 130, which are defined as the first ink layer 142, the second ink layer 143 and the third ink layer 144 respectively. The first ink layer 142 is arranged close to the cover plate 130, and the third ink layer 144 is arranged away from the cover plate 130. In order to form the missing portion 1401, the distance between the third ink layer 144 and the straight area, the distance between the second ink layer 143 and the straight area, and the distance between the first ink layer 142 and the straight area are reduced in sequence, so that the missing portion 1401 is formed by the end face of the third ink layer 144 close to the straight area and the side face of the adjacent second ink layer 143, as well as the end face of the second ink layer 143 close to the straight area and the side face of the adjacent first ink layer 142.

[0052] The above-mentioned setting of forming the missing portion 1401 by three ink layers 141 can increase the size of the missing portion 1401 to accommodate more gas, and can enhance the stability of the missing portion 1401 while the thickness of the three ink layers 141 is as small as possible.

[0053] It should be noted that the shape of the end surface of the multi-layer ink layer 141 near the straight area can be a plane, an inclined surface or a curved surface. Of course, the inclined surface or the curved surface needs to ensure that the gap formed is located on the side of the ink layer 141 away from the cover plate 130.

[0054] like Figure 4As shown, in some embodiments, the first ink layer 142 , the second ink layer 143 , and the third ink layer 144 are configured with step surfaces at the missing portion 1401 .

[0055] Specifically, since the first ink layer 142, the second ink layer 143 and the third ink layer 144 are arranged in a step-like manner, a corresponding step surface is formed at the missing portion 1401, and the step surface may include at least one of an arc surface, a plane or an inclined surface, and the specific structure is not limited here.

[0056] The setting of the step surface makes it easy for the gas to be squeezed to the missing portion 1401, which not only allows the gas at the missing portion to be completely blocked by the ink layer 141, so that there are no bubbles in the display area, but also is more conducive to cooperating with the adhesive layer 120 (optical glue) to lock the gas in the missing portion 1401 to prevent the gas from flowing back into the flat area.

[0057] In some embodiments, the end surface of the second ink layer 143 facing the straight region is parallel to the stacking direction of the cover plate 130 and the display panel 110 .

[0058] Specifically, the end surface of the second ink layer 143 facing the straight area is set as a plane parallel to its thickness direction, then the end surface of the second ink layer 143 is perpendicular to the side surface of the adjacent first ink layer 142, and the two form a right-angled storage area, which is more conducive to the gas being squeezed by the optical adhesive and locked in the storage area. Similarly, in one example, the end surface of the third ink layer 144 facing the straight area is parallel to the stacking direction of the cover plate 130 and the display panel 110. The end surface of the third ink layer 144 facing the straight area is perpendicular to the side surface of the adjacent second ink layer 143, and the two can also form a right-angled storage area. Combined with the above-mentioned storage area, it is more conducive to the gas being squeezed by the optical adhesive and locked in the storage area, thereby preventing the gas from flowing back into the straight area.

[0059] In some embodiments, the distance between the end surface of the second ink layer 143 facing the straight region and the end surface of the first ink layer 142 facing the straight region is between 100 μm and 300 μm.

[0060] Specifically, the end surface of the second ink layer 143 facing the straight area may be at a distance of 100μm, 120μm, 150μm, 200μm, 250μm, 300μm, etc. from the end surface of the first ink layer 142 facing the straight area. The distance may be set according to the size of the actual display module, etc., and is not limited here. Similarly, in one example, the end surface of the third ink layer 144 facing the straight area may be at a distance of between 100μm and 300μm from the end surface of the second ink layer 143 facing the straight area. The end surface of the third ink layer 144 facing the straight area may be at a distance of 100μm, 120μm, 150μm, 200μm, 250μm, 300μm, etc., and the distance may be set according to the size of the actual display module, etc., and is not limited here.

[0061] In some embodiments, along the stacking direction of the cover plate 130 and the display panel 110 , the size of the second ink layer 143 is between 5 μm and 25 μm.

[0062] Specifically, the thickness of the second ink layer 143 can be 5μm, 10μm, 15μm, 20μm, 25μm, etc. The distance can be set according to the actual thickness of the display module and the process of ink laying. Of course, in order to form a thin and light display module, the thickness of the ink layer 141 can be set as low as possible. Similarly, in one example, along the stacking direction of the cover plate 130 and the display panel 110, the size of the third ink layer 144 is between 5μm and 25μm. The thickness of the third ink layer 144 can be 5μm, 10μm, 15μm, 20μm, 25μm, etc., which can be the same as the thickness of the second ink layer 143 or different. It can be set according to the actual thickness of the display module and the process of ink laying, and no specific restrictions are made here.

[0063] like Figure 6 As shown, in some embodiments, the ink structure 140 includes an inner concave surface, which connects the end surface of the ink structure 140 facing the flat area and the side surface facing away from the cover plate 130 .

[0064] Specifically, in this example, in addition to the above-mentioned method of forming the missing portion 1401 by setting multiple layers of ink layers 141, only one layer of ink layer 141 can be laid on the inner side of the cover plate 130, and then the end of the ink structure 140 close to the straight area is operated by removal and other processes, so that the surface of the ink structure 140 at the missing portion 1401 is a concave surface, that is, the missing portion 1401 formed at the corner of the ink structure 140 is a concave notch. The above-mentioned concave notch is not only easy to form, but also conducive to accommodating the gas moved from the straight area after being squeezed, thereby solving the problem of gas appearing in the display area.

[0065] In addition to the above-mentioned method of setting the concave notch, it can also be, for example Figure 7 As shown, in one example, the ink structure 140 includes a flat surface, and the flat surface connects the end surface of the ink structure 140 facing the flat area and the side surface facing away from the cover plate 130 .

[0066] Specifically, only one ink layer 141 is laid on the inner side of the cover plate 130, and then the end of the ink structure 140 close to the straight area is operated by removal or other processes, so that the surface of the ink structure 140 at the missing part 1401 is a straight surface, that is, the missing part 1401 formed at the corner of the ink structure 140 is a flat cut notch. The above-mentioned flat cut notch is not only easy to form, but also conducive to accommodating the gas moved from the straight area after being squeezed, thereby solving the problem of gas appearing in the display area.

[0067] Based on the same application concept, an embodiment of the present application also provides a display device. Figure 8 A schematic diagram of the structure of a display device 20 provided in an embodiment of the present application is shown in FIG. Figure 8 As shown, the display device 20 includes the display module 10 in any of the above embodiments. The display device 20 may be an electroluminescent display device or a photoluminescent display device. In the case where the display device 20 is an electroluminescent display device, the electroluminescent display device may be an OLED (Organic Light-Emitting Diode) or a QLED (Quantum Dot Light-Emitting Diodes). In the case where the display device is a photoluminescent display device, the photoluminescent display device may be a quantum dot photoluminescent display device.

[0068] For example, Figure 8 As shown, the display device 20 includes a display module 10. Therefore, the display device 20 also has the beneficial effects of the display module 10 in the above embodiment, and the similarities can be understood by referring to the above explanation of the display module 10, which will not be repeated below.

[0069] The display device 20 provided in the embodiment of the present application can be Figure 8 The mobile phone shown can also be any electronic product with a display function, including but not limited to the following categories: televisions, laptops, desktop displays, tablet computers, digital cameras, smart bracelets, smart glasses, car displays, industrial control equipment, medical display screens, touch interactive terminals, etc. The embodiments of the present application do not specifically limit this.

[0070] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A display module, characterized in that: include: A display panel, an adhesive layer and a cover plate are stacked, wherein the cover plate includes a straight area and a curved area that are adjacent to each other; as well as an ink structure located between the cover plate and the adhesive layer in the curved area; The ink structure has a missing portion at a connection between an end surface facing the straight area and a side surface facing away from the cover plate.

2. The display module according to claim 1, characterized in that: Along the stacking direction of the cover plate and the display panel, the orthographic projection of the missing portion is located within the orthographic projection area of ​​the ink structure.

3. The display module according to claim 1, characterized in that: A surface of the ink structure that is located outside the missing portion and faces away from the cover plate is in contact with the adhesive layer.

4. The display module according to claim 1, characterized in that: Along the stacking direction of the cover plate and the display panel, the dimension of the end surface of the ink structure facing the straight area is smaller than the dimension of the portion of the ink structure located outside the missing portion.

5. The display module according to any one of claims 1 to 4, characterized in that: Along the stacking direction of the cover plate and the display panel, the ink structure includes at least two ink layers stacked in sequence.

6. The display module according to claim 5, characterized in that: In two adjacent ink layers, the distance between the ink layer close to the cover plate and the straight area is smaller than the distance between the ink layer away from the cover plate and the straight area, so that the missing portion is formed by the end face of the ink layer away from the cover plate and the side face of the adjacent ink layer.

7. The display module according to any one of claims 1 to 4, characterized in that: The ink structure comprises a first ink layer, a second ink layer and a third ink layer stacked in a direction away from the cover plate, the distance between the first ink layer and the straight area is smaller than the distance between the second ink layer and the straight area, and the distance between the second ink layer and the straight area is smaller than the distance between the third ink layer and the straight area; The end surface of the third ink layer close to the straight area and the side surface adjacent to the second ink layer, and the end surface of the second ink layer close to the straight area and the side surface adjacent to the first ink layer constitute the missing portion.

8. The display module according to claim 7, characterized in that: The first ink layer, the second ink layer, and the third ink layer are configured with step surfaces at the missing portion.

9. The display module according to claim 7, characterized in that: The end surface of the second ink layer facing the flat area is parallel to the stacking direction of the cover plate and the display panel; And / or, an end surface of the third ink layer facing the straight area is parallel to a stacking direction of the cover plate and the display panel.

10. The display module according to claim 7, characterized in that: The distance between the end surface of the second ink layer facing the straight area and the end surface of the first ink layer facing the straight area is between 100 μm and 300 μm; And / or, the distance between the end surface of the third ink layer facing the flat area and the end surface of the second ink layer facing the flat area is between 100 μm and 300 μm.

11. The display module according to claim 7, characterized in that: Along the stacking direction of the cover plate and the display panel, the size of the second ink layer is between 5 μm and 25 μm; And / or, along the stacking direction of the cover plate and the display panel, the size of the third ink layer is between 5 μm and 25 μm.

12. The display module according to any one of claims 1 to 3, characterized in that: The ink structure comprises an inner concave surface, wherein the inner concave surface connects an end surface of the ink structure facing the straight area and a side surface facing away from the cover plate; Alternatively, the ink structure comprises a flat surface, wherein the flat surface connects an end surface of the ink structure facing the flat area and a side surface facing away from the cover plate.

13. A display device, characterized in that: Comprising the display module as claimed in any one of claims 1 to 12.

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