Display, display apparatus, and display preparation method

Abstract

A display, a display apparatus, and a display preparation method, relating to the technical field of display panels. The display (1) comprises a display panel (PNL), a bonding layer, and a cover plate (2), which are stackedly arranged. A light-emitting side of the display panel has a display area (AA) and a peripheral area (BB) surrounding the display area. The bonding layer comprises an edge bonding layer (5) disposed in the peripheral area and a main bonding layer (4) covering the display area. The shear storage modulus of the edge bonding layer is greater than the shear storage modulus of the main bonding layer. The display area is bonded by means of using the main bonding layer, and the peripheral area is bonded by means of using the edge bonding layer having the larger shear storage modulus, thereby increasing the bonding capability of the peripheral area of the light-emitting side of the display panel and the cover plate and improving display reliability, especially edge stability of the display when in a high-temperature and high-humidity environment for a long time, as well as improving impact resistance and drop resistance of the edge of the display without affecting optical characteristics of the display area of the light-emitting side of the display panel.

Description

Display, display device, and method for manufacturing the display

[0001] Cross-references

[0002] This disclosure claims priority to Chinese patent application number 202311277599.9, filed on September 28, 2023, entitled “A display, a display device, and a method for preparing a display”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the technical field of display panels, and in particular, to a display, a display device, and a method for manufacturing the display. Background Art

[0004] A spherical OLED display is a flexible OLED assembled onto a fully or partially spherical rigid substrate or transparent cover through a curved lamination process. Due to the non-developable nature of spherical surfaces, the lamination of these spherical display modules can lead to debonding and wrinkling at the edges after assembly. These debonding and wrinkling tend to develop more rapidly in high-temperature and high-humidity environments.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0006] Summary of the Invention

[0007] The purpose of the present disclosure is to overcome the deficiencies of the above-mentioned prior art and provide a display, a display device and a method for manufacturing a display, so as to improve the phenomenon of debonding and wrinkling at the edge of the display in a high temperature and high humidity environment.

[0008] According to one aspect of the present disclosure, a display is provided, comprising a stacked display panel, an adhesive layer, and a cover plate; the light-emitting side of the display panel comprises a display area and a peripheral area surrounding the display area;

[0009] The adhesive layer includes an edge adhesive layer arranged in the peripheral area and a main adhesive layer covering the display area; the shear storage modulus of the edge adhesive layer is greater than the shear storage modulus of the main adhesive layer.

[0010] In an exemplary embodiment of the present disclosure, at least a portion of the surface of the cover plate is a curved surface.

[0011] In an exemplary embodiment of the present disclosure, at least a portion of the surface of the cover plate is a non-developable curved surface.

[0012] In an exemplary embodiment of the present disclosure, the shear storage modulus of the edge adhesive layer at 25° C. is not less than 300 kPa.

[0013] In an exemplary embodiment of the present disclosure, the main adhesive layer and the edge adhesive layer do not overlap with each other.

[0014] In an exemplary embodiment of the present disclosure, the display panel has a first thickness at an edge of the peripheral area, and has a second thickness inside the peripheral area; the first thickness is at least 10 micrometers smaller than the second thickness;

[0015] The edge adhesive layer covers at least a portion of the edge of the peripheral area.

[0016] In an exemplary embodiment of the present disclosure, the display panel is provided with a thinned area at the edge of the peripheral area, and the edge adhesive layer covers at least a portion of the thinned area.

[0017] In an exemplary embodiment of the present disclosure, the width of the edge adhesive layer is not less than 0.15 mm.

[0018] In an exemplary embodiment of the present disclosure, the edge adhesive layer is black.

[0019] In an exemplary embodiment of the present disclosure, the edge adhesive layer is transparent or translucent.

[0020] In an exemplary embodiment of the present disclosure, the edge adhesive layer is at least one of modified acrylic resin, modified polyurethane resin, modified organic silicone resin, and modified epoxy resin.

[0021] In an exemplary embodiment of the present disclosure, the display further includes a back support layer disposed on the non-light-emitting side of the display panel;

[0022] The edge adhesive layer extends beyond the edge of the display panel and is connected to the back support layer.

[0023] In an exemplary embodiment of the present disclosure, the display panel is a flexible display panel.

[0024] In an exemplary embodiment of the present disclosure, the surface of the edge region of the cover plate is a curved surface.

[0025] In an exemplary embodiment of the present disclosure, the edge adhesive layer is made of the same material as the main adhesive layer, and has a shear storage modulus of not less than 300 kPa at 25°C.

[0026] In an exemplary embodiment of the present disclosure, a display device is provided, comprising the above-mentioned display.

[0027] In an exemplary embodiment of the present disclosure, a method for preparing a display is provided, comprising the following steps:

[0028] Providing a display panel, wherein a light-emitting side of the display panel has a display area and a peripheral area surrounding the display area;

[0029] forming an adhesive layer on the light-emitting side of the display panel, the adhesive layer comprising an edge adhesive layer disposed in the peripheral area and a main adhesive layer covering the display area; the shear storage modulus of the edge adhesive layer is greater than the shear storage modulus of the main adhesive layer;

[0030] A cover plate is provided on a side of the adhesive layer away from the display panel.

[0031] The present disclosure provides a display, a display device, and a method for preparing a display, wherein a display panel is assembled into a cover plate by bonding, and a display area is bonded by a main bonding layer, and a peripheral area is bonded by an edge bonding layer with a larger shear storage modulus, thereby improving the bonding ability between the peripheral area on the light-emitting side of the display panel and the cover plate, and improving the reliability of the display, especially the stability of the display edge in a high-temperature and high-humidity environment for a long time. At the same time, without affecting the optical characteristics of the display area on the light-emitting side of the display panel, the impact resistance and drop resistance of the display edge are improved.

[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0034] FIG1 is a schematic diagram of a circular display structure according to an embodiment of the present disclosure.

[0035] FIG2 is a schematic diagram of a square display structure according to an embodiment of the present disclosure.

[0036] FIG3 is a front view of a cover plate in a circular display according to some embodiments of the present disclosure.

[0037] FIG4 is a schematic diagram of the cross-sectional structure of the cover plate in the first embodiment, with the cutting position being A=A.

[0038] FIG5 is a schematic diagram of the cross-sectional structure of the cover plate in the second embodiment, with the cutting position being A=A.

[0039] FIG6 is a schematic diagram of the cross-sectional structure of the cover plate in the third embodiment, with the cutting position being A=A.

[0040] FIG7 is a schematic diagram of the cross-sectional structure of the cover plate in the fourth embodiment, with the cutting position being A=A.

[0041] FIG8 is a schematic diagram of the cross-sectional structure of the cover plate in the fifth embodiment, with the cutting position being A=A.

[0042] FIG9 is a schematic diagram of a stacked structure of a display according to an embodiment of the present disclosure.

[0043] FIG10 is a schematic diagram of a stacked structure of a display according to an embodiment of the present disclosure.

[0044] FIG11 is a schematic diagram of a stacked structure of a display according to an embodiment of the present disclosure.

[0045] FIG12 is a schematic diagram of a stacked structure of a display according to an embodiment of the present disclosure.

[0046] FIG13 is a schematic diagram showing the relative positional relationship between the edge adhesive layer and the main adhesive layer, the display area on the light-emitting side of the display panel, and the ink area of ​​the cover plate in FIG11 .

[0047] FIG14 is a schematic diagram showing the relative positional relationship between the edge adhesive layer and the main adhesive layer, the display area on the light-emitting side of the display panel, and the ink area of ​​the cover plate in FIG10 .

[0048] Figure 15 is a schematic diagram of the relative positional relationship between the edge adhesive layer and the main adhesive layer, the display area on the light-emitting side of the display panel, and the ink area of ​​the cover plate, wherein the edge adhesive layer extends out of the display panel and connects to the back support frame.

[0049] FIG16 is a schematic diagram of the edge structure of the edge adhesive layer, the cover plate, and the display panel in one embodiment of the present disclosure.

[0050] FIG17 is a schematic diagram of the edge structure of the edge adhesive layer, the cover plate, and the display panel in one embodiment of the present disclosure.

[0051] FIG18 is a schematic diagram of the edge structure of the edge adhesive layer, the cover plate, and the display panel in one embodiment of the present disclosure.

[0052] FIG19 is a schematic diagram of a display edge stacking step difference structure according to an embodiment of the present disclosure.

[0053] Figures 20-1 to 20-9 are schematic structural diagrams of a display manufacturing process according to an embodiment of the present disclosure.

[0054] Figures 21-1 to 21-10 are schematic structural diagrams of a display manufacturing process according to an embodiment of the present disclosure.

[0055] FIG. 22 is a flow chart of a method for preparing a display according to the present disclosure.

[0056] The main components in the figure are marked as follows: Display panel: PNL; Display area: AA; Peripheral area: BB; Substrate: SBT; Drive layer: DRL; Pixel layer: PIXL; Thin film encapsulation layer: TFE; Touch function layer: TSL; Color filter layer: CFL; Other components are marked as follows: 1. Display; 2. Cover plate; 4. Main adhesive layer; 5. Edge adhesive layer; 6. Polarizing layer; 7. Back support layer; 71. Back film; 72. Foam; 73. Copper foil; 8. Carrier film; 9. Display driver chip. DETAILED DESCRIPTION

[0057] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0058] Although relative terms, such as "on," are used in this specification to describe the relationship of one illustrated component to another, these terms are used for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It should be understood that if the illustrated device were flipped upside down, the component described as "on" would become the component "on" itself. When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0059] The terms “the,” “said,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0060] In the present disclosure, when describing that structure A and structure B are not arranged in an overlapping manner, it means that structure A and structure B are arranged in the same film layer, and there is no overlapping part between the orthographic projection of structure A on the substrate SBT and the orthographic projection of structure B on the substrate SBT.

[0061] In the present disclosure, when describing the overlapping arrangement of structure C and structure D, it means that structure C and structure D are arranged in the same film layer, and there is no overlapping part between the orthographic projection of structure C on the substrate SBT and the orthographic projection of structure D on the substrate SBT.

[0062] In the present disclosure, the structural layer E is located on the side of the structural layer F away from the base substrate SBT. This can be understood as the structural layer E being formed on the side of the structural layer F away from the base substrate SBT. When the structural layer F is a patterned structure, part of the structure layer E may also be located at the same physical height as the structural layer E or lower than the physical height of the structural layer E, where the base substrate SBT serves as a height reference.

[0063] The definitions of developable and non-developable surfaces involved in this article are as follows:

[0064] Developable surface: A developable surface is a surface with zero Gaussian curvature at every point on it. It is a special surface in differential geometry that can be transformed into a plane while preserving its length (i.e., a developable surface is a surface that can be unfolded into a plane, such as a cylinder or a cone).

[0065] Non-developable surface: Non-developable surface is a surface that cannot be unfolded into a plane, such as ellipsoids, elliptical paraboloids, and curved surfaces of revolution. Generally, only ruled surfaces are divided into developable surfaces and non-developable surfaces. Hyperbolic surfaces are all non-developable surfaces.

[0066] The lamination of the display panel PNL and the cover plate 2 refers to attaching a layer of cover plate 2 to the display panel PNL. Because the surface hardness of the display panel PNL is low, attaching a layer of cover plate 2 to its surface can not only protect the display panel PNL but also beautify the product. The lamination method of the cover plate 2 and the display panel PNL is the same as the lamination method of the touch screen and the display panel PNL, which is basically divided into two categories: frame lamination and full lamination:

[0067] Frame pasting is simply to use double-sided tape to stick the cover plate 2 and the display panel PNL together. There is a gap and air between the cover plate 2 and the display panel PNL. Full pasting is to use OCA optical glue or water glue to stick the cover plate 2 and the display panel PNL together. There is no gap and air, just as if the cover plate 2 and the display panel PNL were originally a whole.

[0068] The products produced by the above two methods have their own characteristics:

[0069] Frame pasting: The pasting cost is low and it is not easy to be damaged. Even if it is not pasted well, just tear off the double-sided tape and re-paste it. The maintenance cost is low. Even if one of the cover plate 2 and the display panel PNL is damaged, the other one can continue to be used. But at the same time, because there is air between the cover plate 2 and the display panel PNL, it is easy for dust, water and impurities to enter, and the diffuse reflection is also serious. The visual effect is not as good as the full-paste method.

[0070] Full lamination: The full lamination process eliminates gaps and air between the cover plate 2 and the display panel PNL, effectively preventing impurities such as dust and water vapor condensation from entering between the cover plate 2 and the display panel PNL, maintaining the cleanliness of the display 1; at the same time, it significantly reduces light reflection, making the display effect of the display 1 better; products using the full lamination process can more effectively reduce the interference caused by noise on the touch signal and improve the smoothness of touch operation; due to the characteristics of OCA optical glue or water glue, products using the full lamination process have a thinner body, narrower frame, and more beautiful visual effect.

[0071] The disadvantages of using full lamination are also obvious. Its process is more complicated, the production yield is lower, the equipment investment cost is higher, the maintenance cost is high, the workshop production environment requirements are higher, and rework is more difficult. If one of the cover plate 2 and the display panel PNL is broken, it is not easy to remove the other one intact.

[0072] In general, full lamination provides a better experience, but the cost is higher. Although the frame lamination effect is not as good as full lamination, the cost is lower.

[0073] The cover plate 2 of the present disclosure includes a substrate and an ink layer. The substrate has a window area and a frame area, with the frame area located outside the window area. The ink layer of the present disclosure is formed in the outer region of the back of the frame area (i.e., the center of the ink layer is hollowed out to form the display area AA of the display panel PNL). During the manufacturing process of the display panel PNL, an adhesive layer covers the center area of ​​the back of the substrate (corresponding to the display area AA) and the back of the ink layer, thereby achieving a connection between the cover plate 2 and the other layers of the display panel PNL.

[0074] It's easy to understand that the window area in the present disclosure is formed by surrounding an ink layer. Specifically, the substrate is made of a transparent material, typically any one of glass, polyethylene glycol terephthalate (PET), polystyrene-acrylonitrile (PSA), polycarbonate (PC), and polymethyl methacrylate (PMMA). The ink layer is formed by curing an opaque ink. In the cover plate 2 structure, the ink layer on the back of the frame area blocks light from penetrating the substrate. However, since there is no ink material in the window area, light can pass through smoothly. In the specific implementation process, the inner edge of the ink layer is smooth, so that the display 1 equipped with the cover plate 2 has a better display function.

[0075] The adhesive layer includes a first adhesive portion distributed on the back of the window area and a second adhesive portion integrally connected to the periphery of the first adhesive portion and extending to the back of the ink area. The first adhesive portion and the second adhesive portion are made of the same material. When the second adhesive portion and the first adhesive portion are used to bond the substrate and other layers of the display panel PNL, if they are in a high temperature and high humidity environment for a long time, the bonding effect between the substrate and other layers of the display panel PNL will weaken, and the edges of the display panel PNL will appear to be debonded and wrinkled.

[0076] The edge of the light-emitting side of the display panel PNL has a certain non-luminous area, namely the peripheral area BB, which is usually 0.2 mm to 5 mm in width. In the assembly of the display 1, the bonding ability of the non-luminous area (peripheral area BB) can be improved by using an adhesive layer prepared with a special material in the non-luminous area (peripheral area BB), so that the cover plate 2 can form an excellent bonding relationship with the display panel PNL and other layers through the adhesive layer, thereby improving the problems of debonding and wrinkling caused by internal stress or rebound force after assembly and molding, while not affecting the optical characteristics of the light-emitting side of the display panel PNL.

[0077] Specifically, an embodiment of the present disclosure provides a display including a stacked display panel PNL, an adhesive layer, and a cover plate 2; the light-emitting side of the display panel PNL has a display area AA and a peripheral area BB surrounding the display area AA;

[0078] The adhesive layer includes an edge adhesive layer 5 provided in the peripheral area BB and a main adhesive layer 4 covering the display area AA; the shear storage modulus of the edge adhesive layer 5 is greater than that of the main adhesive layer 4 .

[0079] The present disclosure provides a display in which a display panel PNL is assembled into a cover plate 2 by laminating, and a display area AA is bonded by using a main adhesive layer 4 made of existing materials, and a peripheral area BB is bonded by using an edge adhesive layer 5 with a larger shear storage modulus, thereby improving the bonding ability between the peripheral area BB on the light-emitting side of the display panel PNL and the cover plate 2, and improving the reliability of the display 1, especially the edge stability of the display 1 in a high-temperature and high-humidity environment for a long time. At the same time, without affecting the optical characteristics of the display area AA on the light-emitting side of the display panel PNL, the impact resistance and drop resistance of the edge of the display 1 are improved.

[0080] As shown in FIG22 , the display 1 can be prepared using the following preparation method:

[0081] Step S110 , providing a display panel PNL, wherein a light emitting side of the display panel PNL has a display area AA and a peripheral area BB surrounding the display area AA;

[0082] Step S120: forming an adhesive layer on the light-emitting side of the display panel PNL, the adhesive layer including an edge adhesive layer 5 provided in the peripheral area BB and a main adhesive layer 4 covering the display area AA; the shear storage modulus of the edge adhesive layer 5 is greater than the shear storage modulus of the main adhesive layer 4;

[0083] In step S130 , a cover plate 2 is provided on a side of the adhesive layer away from the display panel PNL.

[0084] The following describes in detail the components of the display 1 provided in the embodiment of the present disclosure with reference to the accompanying drawings:

[0085] As shown in FIG1 , a circular display 1 is shown, wherein the middle portion is an effective display area, namely, the display area AA. The middle portion is bonded by a transparent main adhesive layer 4, which covers the display area AA. The outer periphery of the main adhesive layer 4 is an edge adhesive layer 5, and a display driver chip 9 is provided underneath. As shown in FIG2 , a square display 1 is shown, and the structure of the square display 1 is the same as that of the circular display 1.

[0086] The structure of this embodiment is introduced based on a circular display 1 , as shown in FIG3 , which is a front view of the cover plate 2 in the circular display 1 .

[0087] In a disclosed embodiment, the cover plate 2 is a three-dimensional structure having a certain depth, and the vertical distance from at least one edge of the cover plate 2 to the center of the cover plate 2 is greater than the thickness of the cover plate 2 itself (that is, the angle formed by at least one edge point of the cover plate 2 and the line connecting its opposite edge point and the center of the cover plate 2 is less than 180°).

[0088] In one disclosed embodiment, the cover plate 2 of the present disclosure includes a curved surface.

[0089] In a disclosed embodiment, the cover plate 2 is a developable curved surface structure, a non-developable curved surface structure, or a structure combining a developable curved surface and a non-developable curved surface.

[0090] In a disclosed embodiment, as shown in FIG3 , the front view of the cover plate 2 is circular, wherein the first A=A cross-sectional structure of the cover plate 2 is shown in FIG4 , and the cover plate 2 is a non-expandable curved surface, or the second A=A cross-sectional structure of the cover plate 2 is shown in FIG5 , and the cover plate 2 is formed by splicing two non-expandable curved surfaces, or the third A=A cross-sectional structure of the cover plate 2 is shown in FIG6 , and the cover plate 2 is formed by splicing two non-expandable curved surfaces and one expandable curved surface in sequence, or the fourth A=A cross-sectional structure of the cover plate 2 is shown in FIG7 , and the cover plate 2 is formed by splicing an expandable curved surface and a non-expandable curved surface, or the fifth A=A cross-sectional structure of the cover plate 2 is shown in FIG8 , and the cover plate 2 is formed by staggered splicing of two expandable curved surfaces and one non-expandable curved surface.

[0091] In one disclosed embodiment, the curved surface is a non-developable curved surface. When the cover plate 2 including the non-developable curved surface is curvedly bonded to the display panel PNL, it is more likely to cause debonding, wrinkles and other problems caused by internal stress or rebound force after assembly. By adopting the solution disclosed in the present invention, an excellent bonding relationship can be formed between the non-developable curved surface of the cover plate 2 and the display panel PNL, thereby improving the debonding and wrinkling problems caused by internal stress or rebound force after assembly, while not affecting the optical characteristics of the light-emitting side of the display panel PNL.

[0092] In a disclosed embodiment, the cover plate 2 may be a conical side, a cylindrical side, a partial sphere, or a structure composed of a partial plane and a partial sphere.

[0093] In a disclosed embodiment, the adhesive layer material of the edge adhesive layer 5 is different from that of the main adhesive layer 4. The main adhesive layer 4 is a material such as OCA optical glue, and after sufficient reaction and curing, the shear storage modulus G' at room temperature (25°) is 100kPa. The edge adhesive layer 5 is a polymer adhesive, and after sufficient reaction and curing, the shear storage modulus G' of the polymer adhesive at room temperature (25°) is ≥300kPa. Polymer adhesive is a type of adhesive material with polymer compounds as the main body, also known as polymer adhesive or polymer adhesive. The present disclosure uses a polymer adhesive with a shear storage modulus G'≥300kPa at room temperature (25°) after sufficient reaction and curing to bond the peripheral area BB of the display panel PNL and the cover plate 2 to improve the bonding ability between the cover plate 2 and the peripheral area BB of the display panel PNL. The adhesive layer material has the characteristics of increasing the shear storage modulus at low temperatures and decreasing the shear storage modulus at high temperatures.

[0094] In one disclosed embodiment, the polymer adhesive is black or other colors, translucent, or transparent.

[0095] In one disclosed embodiment, the polymer adhesive is transparent, and a transparent polymer adhesive has better curing conditions.

[0096] In one disclosed embodiment, the polymer adhesive is black, and the black polymer adhesive can replace a portion of the ink layer on the cover plate 2. When printing the ink layer of the cover plate 2, the corresponding workload can be reduced, and the preparation efficiency of the cover plate 2 can be accelerated.

[0097] In one disclosed embodiment, the edge adhesive layer 5 is one of modified acrylic resin, modified polyurethane resin, modified organic silicone resin, modified epoxy resin, or a combination thereof.

[0098] In a disclosed embodiment, the edge bonding layer 5 is a modified acrylic resin, which is transparent, has good curing conditions, and does not undergo further cross-linking during the film-forming process. Therefore, its relative molecular weight is large, and it has good gloss and color retention, water and chemical resistance, fast drying, easy processing, and easy construction, recoating, and rework.

[0099] In a disclosed embodiment, in order to increase the contact area between the edge adhesive layer 5 and the cover plate 2 and the peripheral area BB of the display panel PNL, and thereby increase the bonding reliability of the cover plate 2 and the peripheral area BB of the display panel PNL, the width of the edge adhesive layer 5 is set to be greater than or equal to 0.15 mm, that is, W1 in Figures 13-15 is greater than or equal to 0.15 mm.

[0100] In a disclosed embodiment, the main adhesive layer 4 and the edge adhesive layer 5 do not overlap with each other, that is, the positions of the main adhesive layer 4 and the edge adhesive layer 5 can be distinguished, and the main adhesive layer 4 and the edge adhesive layer 5 can be prevented from overlapping to increase the thickness of the display 1. In order to meet the processing requirements, as shown in Figures 9 to 18, a gap is set between the main adhesive layer 4 and the edge adhesive layer 5. As shown in Figures 13 to 15, the width of the gap is G1, where G1 is greater than or equal to 0.1 mm. During the process, a certain processing error will occur. The setting of G1 is to provide a certain processing allowance for the processing error, further ensuring that the main adhesive layer 4 and the edge adhesive layer 5 do not overlap with each other. At the same time, based on the physical feature of the gap between the main adhesive layer 4 and the edge adhesive layer 5, the preparation of the adhesive layer can be facilitated and the preparation efficiency can be accelerated.

[0101] In one disclosed embodiment, as shown in Figures 13-15, the thickness of the display panel PNL at the edge of the peripheral area BB is a first thickness, and the thickness of the display panel PNL on the inner side of the peripheral area BB is a second thickness; the first thickness is at least 10 microns smaller than the second thickness, that is, H1 in the figure is not less than 10 microns, and the edge adhesive layer 5 covers at least part of the edge of the peripheral area BB. The edge adhesive layer 5 is set at the edge of the peripheral area BB with a smaller thickness, which facilitates positioning of the edge adhesive layer 5 when preparing the display 1.

[0102] In a disclosed embodiment, the display panel PNL is provided with a thinning area at the edge of the peripheral area BB, and the edge adhesive layer 5 covers at least part of the thinning area, that is, H1 in the figure is not less than 10 microns, which facilitates positioning of the edge adhesive layer 5 when preparing the display 1.

[0103] In one disclosed embodiment, as shown in FIG9 , a polarizing layer 6 is provided on the light-emitting side of the display panel PNL, and the main adhesive layer 4 is used to bond the polarizing layer 6 and the cover plate 2 . The method for preparing the display further includes pasting the polarizing layer 6 on the display area AA on the light-emitting side of the display panel PNL.

[0104] In a disclosed embodiment, as shown in FIG. 9 to FIG. 12 and FIG. 16 to FIG. 18 , the display 1 further includes a back support layer 7 disposed on the non-light-emitting side of the display panel PNL.

[0105] In one disclosed embodiment, the edge adhesive layer 5 extends beyond the edge of the display panel PNL and is connected to the back support layer 7 .

[0106] In one disclosed embodiment, the back support layer 7 is a back film 71, a foam 72, and a copper foil 73 that are sequentially adhered to the non-light-emitting side of the display panel PNL from near to far;

[0107] The method for manufacturing the display further includes sequentially bonding a back film 71 , a foam 72 , and a copper foil 73 to the non-light-emitting surface of the display panel PNL.

[0108] In one disclosed embodiment, as shown in FIG9 , a flat-panel display 1 is provided, comprising a copper foil 73, a foam 72, a back film 71, a display panel PNL, a polarizing layer 6, an adhesive layer, and a cover plate 2 stacked in sequence, wherein the adhesive layer comprises a main adhesive layer 4 and an edge adhesive layer 5, wherein a gap is provided between the edge adhesive layer 5 and the main adhesive layer 4, the main adhesive layer 4 is used to bond the polarizing layer 6 and the cover plate 2, and the edge adhesive layer 5 is used to bond the ink area of ​​the cover plate 2 to the peripheral area BB of the display panel PNL.

[0109] In a disclosed embodiment, as shown in Figures 10 and 14, a flat-panel display 1 is provided. The display 1 includes a copper foil 73, a foam 72, a back film 71, a display panel PNL, an adhesive layer, and a cover plate 2 stacked in sequence, wherein the adhesive layer includes a main adhesive layer 4 and an edge adhesive layer 5. A thinning area is provided at the edge of the peripheral area BB of the display panel PNL. The main adhesive layer 4 is used to bond the display area AA, part of the peripheral area BB, and the cover plate 2 of the display panel PNL. The edge adhesive layer 5 is provided in the thinning area with a gap between the edge adhesive layer 4 and the main adhesive layer 4 for bonding the ink area of ​​the cover plate 2 to the edge of the peripheral area BB, and the width of the edge adhesive layer 5 is equal to the width of the thinning area.

[0110] In a disclosed embodiment, as shown in Figures 11 and 13, the difference between Figure 11 and Figure 10 is that the width of the edge adhesive layer 5 is smaller than the width of the thinning area, that is, the sum of G2 and W1 is the width of the thinning area, and the edge adhesive layer 5 is arranged on the inner side of the thinning area.

[0111] In a disclosed embodiment, as shown in FIG. 15 , the difference between FIG. 15 and FIG. 10 is that the edge adhesive layer 5 extends out of the display panel PNL and connects to the back support layer 7 .

[0112] In a disclosed embodiment, as shown in FIG16 , the difference between FIG16 and FIG11 is that FIG15 is a curved display 1 .

[0113] In a disclosed embodiment, as shown in FIG18 , the difference between FIG18 and FIG10 is that FIG16 is a curved display 1 .

[0114] In a disclosed embodiment, as shown in FIG19 , the difference between FIG19 and FIG14 is that FIG17 is a curved display 1 .

[0115] In a disclosed embodiment, one side of at least one structure in the back support layer 7 is larger than one side and extends beyond the edge of the display panel PNL. The edge adhesive layer 5 extends out of the peripheral area BB of the display panel PNL and connects the structure in the back support layer 7 with the cover plate 2, thereby improving the bonding ability of the back support layer 7. Specifically, the edge adhesive layer 5 extends outward from the edge of the display panel PNL and directly bonds the structure in the back support layer 7 with the cover plate 2.

[0116] In one disclosed embodiment, as shown in FIG19 , the display panel PNL includes a flexible base layer (substrate substrate SBT), a circuit layer (drive layer DRL), a light-emitting layer (pixel layer PIXL), an encapsulation layer (thin film encapsulation layer TFE), a touch screen layer (touch function layer TSL), and a color filter layer CFL, which are stacked in sequence.

[0117] In one disclosed embodiment, the edge adhesive layer 5 is made of the same material as the main adhesive layer 4 and has a shear storage modulus of not less than 300 kPa at 25°C.

[0118] An embodiment of the present disclosure provides a display device, including the display 1 described above.

[0119] The display 1 in the display device provided in the present disclosure has the same structure as the display 1 described in the above display 1 embodiment, and therefore has the same beneficial effects, which will not be described in detail in the present disclosure.

[0120] The display 1 obtained by the method for preparing the display provided in the present disclosure has the same structure as the display 1 described in the above embodiment of the display 1, and therefore has the same beneficial effects, which will not be described in detail in the present disclosure.

[0121] In one disclosed embodiment, as shown in FIG20 , a method for preparing a display includes the following steps:

[0122] S110, as shown in FIG20-1, providing a display panel PNL, wherein a light-emitting side of the display panel PNL has a display area AA and a peripheral area BB surrounding the display area AA, wherein the peripheral area BB has a thinned area;

[0123] S111, as shown in FIG20-2, bonding the back film 71 to the non-light-emitting side of the display panel PNL;

[0124] S112, as shown in FIG20-3, the display panel PNL and the back film 71 are integrally cut by laser;

[0125] S113, as shown in FIG20-4, bonding the carrier film 8 to the side of the back film 71 away from the display panel PNL;

[0126] S120, forming an adhesive layer on the light-emitting side of the display panel PNL, the adhesive layer including an edge adhesive layer 5 provided in the peripheral area BB and a main adhesive layer 4 covering the display area AA; the edge adhesive layer 5 has a shear storage modulus greater than that of the main adhesive layer 4;

[0127] Specifically: as shown in FIG20-5 , a main adhesive layer 4 is bonded to the light-emitting side of the display panel PNL; as shown in FIG21-6 , an edge adhesive layer 5 is formed after pre-curing the glue in the thinned area on the light-emitting side of the display panel PNL;

[0128] S130, as shown in FIG20-7, disposing a cover plate 2 on a side of the adhesive layer away from the display panel PNL;

[0129] S131, as shown in FIG20-8, removing the carrier film 8;

[0130] S140 - 2 , as shown in FIG. 20 - 9 , the foam 72 and the copper foil 73 are bonded in sequence to complete the preparation of the display 1 .

[0131] The display prepared by the above method includes a copper foil 73, a foam 72, a back film 71, a display panel PNL, an adhesive layer and a cover plate 2 stacked in sequence, wherein the adhesive layer includes an edge adhesive layer 5 of a thinned layer arranged in the peripheral area BB and a main adhesive layer 4 covering the display area AA.

[0132] In one disclosed embodiment, as shown in FIG21 , a method for preparing a display includes the following steps:

[0133] S110 , as shown in FIG21-1 , providing a display panel PNL, wherein a light-emitting side of the display panel PNL has a display area AA and a peripheral area BB surrounding the display area AA;

[0134] S111, as shown in FIG21-2, bonding the back film 71 to the non-light-emitting side of the display panel PNL;

[0135] S112, as shown in FIG21-3, attaching a polarizing layer 6 to the light-emitting side of the display panel PNL;

[0136] S113, as shown in FIG21-4, the display panel PNL and the back film 71 are integrally cut by laser;

[0137] S114, as shown in FIG21-5, bonding the carrier film 8 to the side of the back film 71 away from the display panel PNL;

[0138] S120, forming an adhesive layer on the light-emitting side of the display panel PNL, the adhesive layer including an edge adhesive layer 5 provided in the peripheral area BB and a main adhesive layer 4 covering the display area AA; the edge adhesive layer 5 has a shear storage modulus greater than that of the main adhesive layer 4;

[0139] Specifically: as shown in FIG21-6 , a main adhesive layer 4 is bonded to the light-emitting side of the display panel PNL; as shown in FIG20-7 , an edge adhesive layer 5 is formed after pre-curing the glue in the thinned area on the light-emitting side of the display panel PNL;

[0140] S130, as shown in FIG21-8, disposing a cover plate 2 on a side of the adhesive layer away from the display panel PNL;

[0141] S131, as shown in FIG21-9, removing the carrier film 8;

[0142] S132 , as shown in FIG. 21-10 , sequentially bond the foam 72 and the copper foil 73 to complete the preparation of the display 1 .

[0143] The display prepared by the above method includes a copper foil 73, a foam 72, a back film 71, a display panel PNL, an adhesive layer and a cover plate 2 stacked in sequence, wherein the adhesive layer includes an edge adhesive layer 5 arranged at the edge of the peripheral area BB and a main adhesive layer 4 covering the display area AA.

[0144] It should be noted that although the steps of the preparation method disclosed herein are depicted in a specific order in the accompanying drawings, this does not require or imply that the steps must be performed in this specific order, or that all steps must be performed to achieve the desired results. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one, and / or a single step may be broken down into multiple steps.

[0145] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display, wherein: The invention comprises a stacked display panel, an adhesive layer and a cover plate; the light emitting side of the display panel comprises a display area and a peripheral area surrounding the display area; The adhesive layer includes an edge adhesive layer arranged in the peripheral area and a main adhesive layer covering the display area; the shear storage modulus of the edge adhesive layer is greater than the shear storage modulus of the main adhesive layer.

2. The display according to claim 1, wherein: At least a portion of the surface of the cover plate is a curved surface.

3. The display according to claim 2, wherein: At least a portion of the surface of the cover plate is a non-developable curved surface.

4. The display according to claim 1, wherein: The shear storage modulus of the edge adhesive layer at 25° C. is not less than 300 kPa.

5. The display according to claim 1, wherein: The main adhesive layer and the edge adhesive layer do not overlap each other.

6. The display according to claim 5, wherein: The display panel has a first thickness at the edge of the peripheral area, and the display panel has a second thickness inside the peripheral area; the first thickness is at least 10 micrometers smaller than the second thickness; The edge adhesive layer covers at least a portion of the edge of the peripheral area.

7. The display according to claim 5, wherein: The display panel is provided with a thinning area at the edge of the peripheral area, and the edge adhesive layer covers at least a portion of the thinning area.

8. The display according to claim 1, wherein: The width of the edge adhesive layer is not less than 0.15 mm.

9. The display according to claim 1, wherein: The edge adhesive layer is black.

10. The display according to claim 1, wherein: The edge bonding layer is transparent or translucent.

11. The display according to claim 1, wherein: The edge adhesive layer is at least one of modified acrylic resin, modified polyurethane resin, modified organic silicone resin, and modified epoxy resin.

12. The display according to claim 1, wherein: The display further includes a back support layer disposed on the non-light emitting side of the display panel; The edge adhesive layer extends out of the edge of the display panel and is connected to the back support layer.

13. The display according to claim 1, wherein: The display panel is a flexible display panel.

14. The display according to claim 2, wherein: The surface of the edge area of ​​the cover plate is a curved surface.

15. The display according to claim 1, wherein: The edge adhesive layer is made of the same material as the main adhesive layer, and has a shear storage modulus of not less than 300 kPa at 25°C.

16. A display device, wherein: A display comprising any one of claims 1-15.

17. A method for preparing a display, wherein: The following steps are involved: Providing a display panel, wherein a light emitting side of the display panel has a display area and a peripheral area surrounding the display area; forming an adhesive layer on the light-emitting side of the display panel, the adhesive layer comprising an edge adhesive layer arranged in the peripheral area and a main adhesive layer covering the display area; the shear storage modulus of the edge adhesive layer is greater than the shear storage modulus of the main adhesive layer; A cover plate is arranged on a side of the adhesive layer away from the display panel.

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