Display module and display device

Abstract

The utility model relates to a display module and a display device. The display module comprises a display panel, a cover plate and an optical adhesive layer, the cover plate is arranged on the light emitting side of the display panel; the optical adhesive layer is arranged between the display panel and the cover plate and adheres the display panel and the cover plate, the peripheral edge of the optical adhesive layer and the peripheral edge of the display panel are arranged in a flush mode, and the contour line of at least one corner of the optical adhesive layer is arranged in an inward shrinkage mode relative to the contour line of the corresponding corner of the display panel; therefore, the corner shrunk inwards after cutting and the protective film are not fused and adhered, so that the protective film is easier to tear off, and the problem that the optical adhesive layer is separated from the display panel and fails in the film tearing process is solved.

Description

TECHNICAL FIELD

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

[0002] The common process of the current OLED module is to adhere the polarizing sheet and the back plate to the display panel, and then to perform module integrated cutting. In order to ensure the support ability of the module edge during cutting, the optical adhesive layer for bonding the cover plate needs to be flush with the edge of the display panel. Before cutting, the optical adhesive layer is adhered to the surface of the polarizing sheet, and then the optical adhesive layer, the polarizing sheet, the display panel and the back plate are integrally cut, so that the edges of the module are kept neat. However, after synchronous cutting, the protective film on the surface of the optical adhesive layer will be adhered to the optical adhesive layer due to melting, which will cause the protective film of the optical adhesive layer to be unable to be peeled off in the subsequent process, or the optical adhesive layer and the display panel will be peeled off during film peeling. UTILITY MODEL CONTENT

[0003] The present application provides a display module and a display device, which solves the problem that the existing protective film is difficult to be peeled off from the optical adhesive layer.

[0004] In order to achieve the above-mentioned purpose, according to the first aspect of the present application, a display module is provided, comprising:

[0005] a display panel;

[0006] a cover plate, the cover plate is arranged on the light-out side of the display panel; and

[0007] an optical adhesive layer, the optical adhesive layer is arranged between the display panel and the cover plate, and bonds the display panel and the cover plate, the peripheral edge of the optical adhesive layer and the peripheral edge of the display panel are flush, and at least one corner profile of the optical adhesive layer is arranged inward compared with the corresponding corner profile of the display panel.

[0008] In an embodiment, the display panel comprises a display part, a bending part and a binding part, the binding part is located on the back side of the display part, the bending part connects the display part and the binding part, and the display part has two first corners away from the bending part.

[0009] The optical adhesive layer is located on the light-out side of the display part, and the optical adhesive layer has two second corners away from the bending part, the two second corners are respectively corresponding to the two first corners in position, and the profile of the second corner is arranged inward compared with the profile of the corresponding first corner.

[0010] In an embodiment, the display part has two third corners close to the bending part.

[0011] The optical adhesive layer has two fourth corners close to the bending part, and the two fourth corners correspond to the positions of the two third corners respectively, and the profile line of the fourth corner is flush with the profile line of the third corner.

[0012] In an embodiment, the display panel has a first corner, and the optical adhesive layer has a second corner corresponding to the position of the first corner.

[0013] The profile line of the second corner is adapted to the shape of the profile line of the first corner.

[0014] In an embodiment, the profile line of the first corner and the profile line of the second corner are configured as concentric arcs, and the radius difference is greater than or equal to 0.3mm.

[0015] In an embodiment, the profile line of the first corner is set as a smooth arc;

[0016] The profile line of the second corner is zigzag or wavy.

[0017] In an embodiment, the optical adhesive layer further has a connecting section connecting the inwardly recessed corner and the corresponding straight edge.

[0018] The connecting section is provided with a transition arc edge at the connection with the inwardly recessed corner.

[0019] In an embodiment, the display panel has a display area and a frame area located at the periphery of the display area.

[0020] The cover plate has a light-transmitting area and a light-shielding area located at the periphery of the light-transmitting area, the light-transmitting area corresponds to the position of the display area, and the light-shielding area corresponds to the position of the frame area.

[0021] The normal projection of the inwardly recessed corner of the optical adhesive layer on the cover plate is located in the light-shielding area.

[0022] In an embodiment, the display module further comprises:

[0023] A back plate is arranged on the back side of the display panel.

[0024] A back plate protective film is arranged on the side of the back plate away from the display panel.

[0025] A polarizing plate is arranged on the light-emitting side of the display panel.

[0026] The cover plate is arranged on the side of the polarizing plate away from the display panel, and the optical adhesive layer is arranged between the polarizing plate and the cover plate.

[0027] The back plate, the back plate protection film, the polarizer and the display panel are flush on the side edges.

[0028] According to a second aspect of the present application, a display device is provided, comprising the display device described above.

[0029] In the display module of the embodiment of the present application, the optical adhesive layer is first attached on the display side of the display panel, after the whole cutting, the protection film on the optical adhesive layer is torn off, and then the cover plate is attached on the optical adhesive layer; since the contour line of at least one corner of the optical adhesive layer is arranged in a retracted manner compared with the contour line of the corresponding corner of the display panel, the corner of the optical adhesive layer is not cut, that is, before the cover plate is attached, the protection film on the optical adhesive layer is not cut at the position corresponding to the retracted corner, at this time, the optical adhesive layer at the position of the retracted corner will not be fused and adhered with the protection film, when the film is torn off, the tearing position of the protection film at the retracted corner is more concentrated, so that the protection film is more easily torn off, and the problem that the optical adhesive layer is peeled off from the display panel and fails during the film tearing process will not occur.

[0030] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0032] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0033] Figure 1 A schematic diagram of the film layer of the display module provided by the prior art is shown in FIG. 1.

[0034] Figure 2 A planar schematic diagram of the display module (before cutting) provided by the embodiment of the present application is shown in FIG. 2.

[0035] Figure 3 A first planar schematic diagram of the display module (after cutting) provided by the embodiment of the present application is shown in FIG. 3.

[0036] Figure 4 A second planar schematic diagram of the display module (after cutting) provided by the embodiment of the present application is shown in FIG. 4. Figure 3 An enlarged schematic diagram of part A in FIG. 3 is shown in FIG. 5.

[0037] Figure 5 A second planar schematic diagram of the display module (after cutting) provided by the embodiment of the present application is shown in FIG. 4.

[0038] Figure 6 A plan view of a display module (with a cover plate) provided by an embodiment of the present application is shown in FIG. 1A.

[0039] Figure 7 An enlarged view of part B in FIG. 1A is shown in FIG. 1B. Figure 6

[0040] Figure 8 A film layer view of a display module (after cutting) provided by an embodiment of the present application is shown in FIG. 1C. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the protection scope of the present application.

[0042] The present application provides a display module 100 and a display device. The following will be described in detail. It should be noted that the description order of the following embodiments is not intended to limit the preferred order of the embodiments.

[0043] The present application does not limit the specific form of the display device, which can be an OLED display device. The display device provided by the embodiments of the present application can be applied to electronic equipment, which can be a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a vehicle-mounted display, and can also be a wearable device or any product or component with a display function, such as a smart watch, a smart bracelet, smart glasses, smart earphones, smart clothing, a head-mounted display, etc.

[0044] In a first aspect, the present application provides a display module 100, please refer to Figure 2 and Figure 3 The display module 100 includes a display panel 1, a cover plate 2, and an optical adhesive layer 3. The cover plate 2 is arranged on the light-emitting side A of the display panel 1. The optical adhesive layer 3 is arranged between the display panel 1 and the cover plate 2, and adheres the display panel 1 and the cover plate 2. The peripheral edge of the optical adhesive layer 3 and the peripheral edge of the display panel 1 are flush, and at least one corner of the optical adhesive layer 3 is arranged in a retracted manner compared with the corresponding corner of the display panel 1.

[0045] It should be noted that the long side of the display panel 1 is arranged in a first direction F1, and the short side of the display panel 1 is arranged in a second direction F2.

[0046] ​It can be known that, generally, a back plate 5 is arranged on the back side B of the display panel 1, a back plate protection film 6 is arranged on the side of the back plate 5 away from the display panel 1, a polarizer 7 is arranged on the light-emitting side A of the display panel 1, an optical adhesive layer 3 (OCA adhesive) is arranged on the polarizer 7, and after the protection film on the optical adhesive layer 3 is torn off, the cover plate 2 is attached on the optical adhesive layer 3, so as to form a display module 100; the edges of the display module 100 are cut synchronously, the back plate 5, the back plate protection film 6, the polarizer 7 and the peripheral edge of the display panel 1 are arranged flush, so as to ensure that the overall edge of the display module 100 is neat and improve the edge support of the display module 100.

[0047] However, in some products, for example, a module with an outwardly expanded cover plate (an outwardly folded product module or a module with a front frame removed), or a non-folded display module 100' (the cover plate material is ordinary glass and cannot be cut after being attached to the display panel 1), please refer to Figure 1 , the optical adhesive layer 3', the polarizer 7', the display panel 1', the back plate 5' and the back plate protection film 6' need to be cut, and then the protection film on the optical adhesive layer 3' is torn off, and finally the cover plate is attached. However, after the optical adhesive layer 3' is cut, the optical adhesive layer 3' at the edge position will be fused and adhered to the protection film. In the subsequent film tearing process, the equipment will start to tear the film from the two corners on the side of the optical adhesive layer 3'. The fused optical adhesive layer 3' and the protection film 4' will cause the tearing force to be dispersed to the entire corner, so that the protection film 4' on the optical adhesive layer 3' cannot be torn off smoothly, or the optical adhesive layer 3' and the display panel 1' are peeled off and fail during the film tearing process.

[0048] In the embodiments of the present application, please refer to Figure 3 and Figure 8 , the peripheral edge of the optical adhesive layer 3 and the peripheral edge of the display panel 1 are arranged flush, and the contour line of at least one corner is arranged inwardly compared to the contour line of the corresponding corner of the display panel 1. It can be known that, after the optical adhesive layer 3 is cut, the peripheral edge of the optical adhesive layer 3 and the peripheral edge of the display panel 1 are arranged flush, and the contour line of at least one corner of the optical adhesive layer 3 is arranged inwardly compared to the contour line of the corresponding corner of the display panel 1. At this time, the corner of the optical adhesive layer 3 has not been cut, that is, before the cover plate 2 is attached, the protection film 4 on the optical adhesive layer 3 at the position corresponding to the inwardly recessed corner has not been cut. At this time, the optical adhesive layer 3 at the position of the inwardly recessed corner will not be fused and adhered to the protection film 4. When the film is torn off, the tearing position of the protection film 4 at the inwardly recessed corner is more concentrated in force, and the protection film 4 is more easily torn off, so that the protection film 4 is more easily torn off, and the problem that the optical adhesive layer 3 and the display panel 1 are peeled off and fail during the film tearing process does not occur.

[0049] The application does not make specific restrictions on the position of the inwardly-recessed corners of the optical adhesive layer 3. The display panel 1 comprises a display part 11, a bending part 12, and a binding part located at the back side B of the display part 11, the bending part 12 connecting the display part 11 and the binding part (not shown in the figure); in the first direction F1, the display part 11 has two first corners 111 away from the bending part 12 and two third corners 112 close to the bending part 12; the optical adhesive layer 3 has two second corners 31 away from the bending part 12 and two fourth corners 32 close to the bending part 12; it can be that the two second corners 31 are inwardly recessed, or the two fourth corners 32 are inwardly recessed, or both the two second corners 31 and the two fourth corners 32 are inwardly recessed.

[0050] It can be known that, in the film tearing process, if the film is torn from the positions of the two fourth corners 32, the risk of damaging the circuit on the display panel 1 is relatively high, so the film is usually torn from the positions of the two second corners 31. Based on this, in an embodiment of the application, on the side away from the bending part 12, the contour lines of the two second corners 31 are inwardly recessed compared with the contour lines of the two first corners 111.

[0051] Specifically, on the side close to the bending part 12, the contour lines of the two fourth corners 32 are flush compared with the contour lines of the two third corners 112.

[0052] The application does not make specific restrictions on the edge contour lines of the inwardly-recessed second corners 31. The edge contour lines of the inwardly-recessed second corners 31 can be the same as or different from the edge contour lines of the first corners 111.

[0053] In an embodiment, the second corners 31 are inwardly recessed compared with the first corners 111, and the extension direction of the contour lines of the second corners 31 is the same as the extension direction of the contour lines of the first corners 111. That is, the second corners 31 are inwardly recessed along the edge contour lines of the first corners 111, which can make the special-shaped corners of the optical adhesive layer 3 more easily formed.

[0054] Specifically, the extension direction of the contour lines of the second corners 31 is adapted to the contour shape of the first corners 111. Generally, the first corners 111 of the display panel 1 are provided as arc-shaped corners, and correspondingly, the inwardly-recessed second corners 31 of the optical adhesive layer 3 are also provided as arc-shaped corners; that is, the contour lines of the first corners 111 and the contour lines of the second corners 31 are configured as concentric arcs, which can make the special-shaped corners of the optical adhesive layer 3 more easily formed.

[0055] Meanwhile, considering the bonding tolerance and cutting tolerance of the optical adhesive layer 3, the profile line of the first corner 111 and the profile line of the second corner 31 are configured as concentric arcs, and the radius difference H is greater than or equal to 0.3 mm.

[0056] In an embodiment of the present application, referring to Figure 5 , the profile line of the first corner 111 is set as a smooth arc; and the profile line of the second corner 31 is set as a zigzag or a wave shape. It can be understood that after the edge of the second corner 31 inside the optical adhesive layer 3 is retracted along the edge of the first corner 111, the edge support of the display module 100 at this position will be weakened. By setting the profile line of the second corner 31 as a zigzag or a wave shape, not only can the contact area between the cover plate 2 and the display panel 1 and the optical adhesive layer 3 at the position of the second corner 31 be increased, and the adhesion stability of the cover plate 2 and the display panel 1 be enhanced, but also the edge support of the display module 100 can be improved.

[0057] In an embodiment of the present application, referring to Figure 4 , the optical adhesive layer 3 further has a connecting section 33 connecting the retracted corner and the corresponding straight edge 34; and a transition arc edge 35 is arranged at the connection between the connecting section 33 and the retracted corner. Taking the second corner 31 being retracted compared to the first corner 111 as an example, after the second corner 31 is retracted, the second corner 31 needs to be connected with the corresponding straight edge 34 through the connecting section 33; and at the same time, the transition arc edge 35 is arranged at the connection between the connecting section 33 and the second corner 31, which can avoid the second corner 31 from being broken at the connection with the connecting section 33 during the peeling process.

[0058] Referring to Figures 6 to 8 , the display panel 1 has a display area C and a frame area D located at the periphery of the display area C; and the cover plate 2 has a light-transmitting area 21 and a light-blocking area 22 located at the periphery of the light-transmitting area 21, the light-transmitting area 21 corresponds to the display area C, and the light-blocking area 22 corresponds to the frame area D. Generally, an ink layer is coated on the cover plate 2 close to the edge thereof, so as to form the light-transmitting area 21 and the light-blocking area 22 located at the periphery of the light-transmitting area 21 on the cover plate 2.

[0059] In combination with the above-mentioned "the profile line of the first corner 111 and the profile line of the second corner 31 are configured as concentric arcs, and the radius difference H is greater than or equal to 0.3 mm", when the inward retraction distance of the second corner 31 of the optical adhesive layer 3 is too large, on the one hand, the edge support of the display module 100 is weakened, and on the other hand, the edge of the second corner 31 enters the light transmission area 21 of the cover plate 2, thereby affecting the appearance of the product; by setting the orthographic projection of the inward retracted second corner 31 of the optical adhesive layer 3 on the cover plate 2 in the light shielding area 22, the edge of the inward retracted second corner 31 can be shielded by the light shielding area 22 on the cover plate 2, thereby not affecting the overall appearance of the product.

[0060] In a second aspect, the embodiments of the present application provide a display device. The display device comprises the display module 100. It should be noted that the display module 100 is the display module 100 described above, that is, the display module 100 comprises all the technical features of the display module 100 described above, and the display device comprises all the embodiments of the display module 100 described above, and thus has all the technical effects of the embodiments described above, which will not be repeated here.

[0061] In the description of the present application, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0062] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0063] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0064] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiment without departing from the technical solution of the present application and according to the technical essence of the present application still belongs to the scope of the technical solution of the present application.

Claims

1. A display module, characterized by The display module comprises: a display panel; a cover plate arranged on the light-emitting side of the display panel; and an optical adhesive layer arranged between the display panel and the cover plate and bonding the display panel and the cover plate, the peripheral edge of the optical adhesive layer and the peripheral edge of the display panel are arranged flush, and the contour line of at least one corner of the optical adhesive layer is arranged inwardly compared with the contour line of the corresponding corner of the display panel. The display panel comprises a display part, a bending part and a binding part, the binding part is located on the back side of the display part, the bending part connects the display part and the binding part, and the display part has two first corners away from the bending part.

2. The display module of claim 1, wherein, The optical adhesive layer is located on the light-emitting side of the display part, the optical adhesive layer has two second corners away from the bending part, the two second corners are respectively corresponding to the two first corners in position, and the contour line of the second corner is arranged inwardly compared with the contour line of the first corner on the corresponding side. The display part has two third corners close to the bending part.

3. The display module of claim 2, wherein the display module is configured to be mounted to a display module mounting surface of a display module mounting structure. The optical adhesive layer has two fourth corners close to the bending part, the two fourth corners are respectively corresponding to the two third corners in position, and the contour line of the fourth corner is arranged flush with the contour line of the third corner. The display panel has a first corner, and the optical adhesive layer has a second corner corresponding to the first corner in position.

4. The display module of claim 1, wherein, The contour line of the second corner is arranged inwardly compared with the contour line of the first corner, and the contour line of the second corner is adaptively shaped to the contour line of the first corner. The contour line of the first corner and the contour line of the second corner are configured as concentric arcs, and the radius difference is greater than or equal to 0.3 mm.

5. The display module of claim 4, wherein the display module is configured to be mounted to a display module mounting surface of a display module mounting structure. The contour line of the first corner is arranged as a smooth arc; 6. The display module of claim 4, wherein the display module is configured to be mounted on a display stand. The contour line of the second corner is arranged as a zigzag or a wave shape. The optical adhesive layer further has a connecting segment connecting the inwardly recessed corner and the corresponding straight side; 7. The display module of claim 1, wherein the display module is configured to be mounted on a display stand. The connecting segment is provided with a transition arc edge at the connection with the inwardly recessed corner. The display panel has a display area and a frame area located on the periphery of the display area.

8. The display module of claim 1, wherein, The cover plate has a light-transmitting area and a light-shielding area located on the periphery of the light-transmitting area, the light-transmitting area corresponds to the display area in position, and the light-shielding area corresponds to the frame area in position. The normal projection of the inwardly recessed corner of the optical adhesive layer on the cover plate is located in the light-shielding area. The display module further comprises:

9. The display module of claim 1, wherein the display module is configured to be mounted on a display stand. a back plate arranged on the back side of the display panel; a back plate protection film arranged on the side of the back plate away from the display panel; a polarizing plate arranged on the light-emitting side of the display panel; The cover plate is arranged on the side of the polarizing plate away from the display panel, and the optical adhesive layer is arranged between the polarizing plate and the cover plate. The peripheral edges of the back plate, the back plate protection film, the polarizing plate and the display panel are arranged flush. The display module comprises any one of claims 1-9.

10. A display device, characterized by comprising: ​

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