Display panel and manufacturing method thereof, and display device

Abstract

The present invention discloses a display panel and a preparation method thereof, and a display device. The display panel includes a display area and a sealing frame area surrounding the display area; the sealing frame area includes an auxiliary packaging structure, and the display panel also includes a first substrate and a second substrate arranged opposite to each other, and the auxiliary packaging structure is located between the first substrate and the second substrate; the auxiliary packaging structure includes a main structure and a dislocation structure, and the main structure and the dislocation structure are at least partially in contact. By adding an auxiliary packaging structure on the side of the sealing frame area away from the display area, the auxiliary packaging structure is composed of the main structure and the dislocation structure at least partially in contact. When pressure acts, the main structure slides outward, which can reduce the supporting force of the sealing frame glue, reduce the glass stress between the first substrate and the second substrate, solve the problem of yellowing or shining edges of the display panel when the screen is white or grayscale, and improve the visual imaging effect of the display panel.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of display technology, and in particular to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] Liquid Crystal Display (LCD) devices have the characteristics of small size, low power consumption, and no radiation, and have been rapidly developed. At present, the main structure of the LCD panel includes an array substrate, a color film (CF) substrate, and a liquid crystal (LC) layer filled between the two. In the cell of the array substrate and the color film substrate, a sealant is usually coated on one substrate, and liquid crystal is dripped on the other substrate. The array substrate and the color film substrate are aligned and bonded under vacuum conditions, and the sealant is cross-linked and polymerized by UV curing and / or thermal curing to solidify, thereby sealing the liquid crystal and fixing the array substrate and the color film substrate.

[0003] The existing display panel is prone to yellowing or shining edges when displaying white or grayscale images, which affects the display effect. Summary of the invention

[0004] The present invention provides a display panel, a preparation method thereof, and a display device. By adding an auxiliary packaging structure on the side of the sealing frame area away from the display area, the problem of yellowing or shining edges of the display panel in white or grayscale images is solved, thereby improving the visual imaging effect of the display panel.

[0005] In a first aspect, an embodiment of the present invention provides a display panel, comprising a display area and a sealing frame area surrounding the display area; the sealing frame area comprises an auxiliary packaging structure, the display panel further comprises a first substrate and a second substrate arranged opposite to each other, the auxiliary packaging structure is located between the first substrate and the second substrate;

[0006] The auxiliary packaging structure includes a main structure and a staggered structure, and the main structure and the staggered structure are at least partially in contact with each other.

[0007] In a second aspect, an embodiment of the present invention provides a method for manufacturing a display panel, the method comprising:

[0008] Prepare a first substrate and a second substrate; wherein the display panel includes a display area and a sealing frame area surrounding the display area;

[0009] An auxiliary packaging structure is provided in the sealing frame area of ​​the first substrate and / or the second substrate; the auxiliary packaging structure comprises a main structure and a dislocation structure, and the main structure and the dislocation structure are at least partially in contact;

[0010] The first substrate and the second substrate are aligned and bonded together.

[0011] In a third aspect, an embodiment of the present invention provides a display device, comprising the display panel provided in the first aspect.

[0012] In summary, an embodiment of the present invention provides a display panel, the display panel includes a display area and a sealing frame area surrounding the display area; the sealing frame area includes an auxiliary packaging structure, the display panel also includes a first substrate and a second substrate arranged opposite to each other, the auxiliary packaging structure is located between the first substrate and the second substrate; the auxiliary packaging structure includes a main structure and a dislocation structure, and the main structure and the dislocation structure are at least partially in contact. By adding an auxiliary packaging structure on the side of the sealing frame area away from the display area, the auxiliary packaging structure is composed of a main structure and a dislocation structure that are at least partially in contact. When pressure is applied, the main structure slides outward, which can reduce the supporting force of the sealing glue, reduce the glass stress between the first substrate and the second substrate, solve the problem of yellowing or shining edges of the display panel when the screen is white or grayscale, and improve the visual imaging effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of a display panel provided by the prior art;

[0014] Figure 2 yes Figure 1 A schematic cross-sectional view of a display panel along the AA' direction;

[0015] Figure 3 is a schematic diagram of a display panel provided by an embodiment of the present invention;

[0016] Figure 4 is a schematic diagram of another display panel provided by an embodiment of the present invention;

[0017] Figure 5 yes Figure 3 A schematic cross-sectional view of a display panel along the BB' direction;

[0018] Figure 6 yes Figure 3 A schematic cross-sectional view of a display panel along the BB' direction;

[0019] Figure 7 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction;

[0020] Figure 8 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction;

[0021] Fig. 9 yes Figure 3A schematic cross-sectional view of another display panel along the BB' direction;

[0022] Fig.10 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction;

[0023] Fig.11 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction;

[0024] Fig.12 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction;

[0025] Fig.13 yes Figure 4 A schematic cross-sectional view of a display panel along the CC' direction;

[0026] Fig.14 yes Figure 4 A schematic cross-sectional view of another display panel along the CC' direction;

[0027] Fig.15 yes Figure 4 A schematic cross-sectional view of another display panel along the CC' direction;

[0028] Fig.16 yes Figure 4 A schematic cross-sectional view of another display panel along the CC' direction;

[0029] Fig.17 yes Figure 4 A schematic cross-sectional view of another display panel along the CC' direction;

[0030] Fig.18 yes Figure 4 A schematic cross-sectional view of another display panel along the BB' direction;

[0031] Fig.19 yes Figure 3 A schematic cross-sectional view of another display panel along the CC direction;

[0032] Fig. 20 is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present invention;

[0033] Fig.21 yes Figure 3 A schematic diagram of a manufacturing process of a display panel along the BB' direction;

[0034] Fig. 22 yes Figure 3 A schematic diagram of a manufacturing process of a display panel along the BB' direction;

[0035] Fig.23 yes Figure 3 A schematic diagram of a manufacturing process of a display panel along the BB' direction;

[0036] Fig.24 is a schematic flow chart of another method for manufacturing a display panel provided by an embodiment of the present invention;

[0037] Fig.25 is a schematic flow chart of another method for manufacturing a display panel provided by an embodiment of the present invention;

[0038] Fig.26 is a schematic diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] Figure 1 It is a schematic diagram of a display panel provided by the prior art; Figure 2 yes Figure 1 A schematic cross-sectional view of a display panel along the AA' direction. Figure 1 and Figure 2 As shown, a display panel 100 in the related art includes a display area A1 and a sealing frame area A2 surrounding the display area A1; a sealing glue 10 is arranged in the sealing frame area A2, and since the film thickness of the color film substrate 101 corresponding to the outer side of the sealing glue 10 is less than the film thickness of the sealing glue 10 and the color film substrate 101 corresponding to the display area A1, the height of the support column 11 at the outer edge of the sealing glue 10 is relatively low relative to the sealing glue 10. For example, the film layer of the color film substrate 101 corresponding to the outer side of the sealing glue 10 includes a sub-pixel film layer (RGB) and an optically transparent adhesive film layer (OC), the film layer of the color film substrate 101 corresponding to the sealing glue 10 generally includes a light shielding layer (BM) and an optically transparent adhesive film layer (OC), and the film layer of the color film substrate 101 corresponding to the display area A1 includes a light shielding layer (BM), a sub-pixel film layer (RGB) and an optically transparent adhesive film layer (OC).

[0041] When the color filter substrate 101 and the array substrate 102 are aligned and bonded under vacuum conditions, the color filter substrate 101 and the array substrate 102 are subjected to pressure, and the array substrate 102 is prone to a seesaw effect when the sealant 10 is used as a support point, that is, the display area A1 is tilted, resulting in an uneven thickness of the display panel 100. When using a display panel 100 with such a structure, the edge of the display area A1 is prone to yellowing or shining in a white screen or a grayscale screen, affecting the display effect.

[0042] Based on the above technical problems, the inventors further studied and proposed a technical solution of an embodiment of the present invention. Specifically, the display panel provided by the embodiment of the present invention includes a display area and a sealing frame area surrounding the display area; the sealing frame area includes an auxiliary packaging structure, the display panel also includes a first substrate and a second substrate arranged opposite to each other, and the auxiliary packaging structure is located between the first substrate and the second substrate; the auxiliary packaging structure includes a main structure and a staggered structure, and the main structure and the staggered structure are at least partially in contact.

[0043] By adopting the above technical solution, an auxiliary packaging structure is added on the side of the sealing frame area away from the display area. The auxiliary packaging structure is composed of a main structure and a dislocation structure that are at least partially in contact. When pressure is applied, the main structure slides outward, which can reduce the supporting force of the frame sealing glue and the glass stress between the first substrate and the second substrate, thereby solving the problem of yellowing or shiny edges of the display panel when displaying white or grayscale images, and improving the visual imaging effect of the display panel.

[0044] The above is the core idea of ​​the present invention. The technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Figure 3 is a schematic diagram of a display panel provided by an embodiment of the present invention; Figure 4 is a schematic diagram of another display panel provided by an embodiment of the present invention; Figure 5 yes Figure 3 A schematic cross-sectional view of a display panel along the BB' direction; Figure 6 yes Figure 3 A schematic cross-sectional view of a display panel along the BB' direction. Figure 3-Figure 6As shown, the display panel 200 provided by the embodiment of the present invention includes a display area AA and a sealing frame area NA surrounding the display area AA; the sealing frame area NA includes an auxiliary packaging structure 20, and the display panel 200 also includes a first substrate 201 and a second substrate 202 arranged opposite to each other, and the auxiliary packaging structure 20 is located between the first substrate 201 and the second substrate 202; the auxiliary packaging structure 20 includes a main structure 21 and a staggered structure 22, and the main structure 21 and the staggered structure 22 are at least partially in contact.

[0046] Specific, combined Figure 3-Figure 6 As shown, the display panel 200 may be a liquid crystal display panel, and the display panel 200 includes a first substrate 201 and a second substrate 202 that are arranged opposite to each other. In an exemplary embodiment, the first substrate 201 may be an array substrate of the display panel 200, and the second substrate 202 may be a color filter substrate of the display panel 200; in other exemplary embodiments, the first substrate 201 may be a color filter substrate of the display panel 200, and the second substrate 202 may be an array substrate of the display panel 200. The array substrate may include gate lines, data lines, thin film transistors, pixel electrodes, and common electrodes formed on the substrate, and the color filter substrate may include a black matrix and a color filter layer formed on the substrate. The array substrate and the color filter substrate may include other film layers, such as an alignment layer, etc., which can be known by those skilled in the art based on mature technologies and will not be described one by one here.

[0047] Combination Figure 5 As shown, the display panel 200 includes a display area AA and a sealing area NA surrounding the display area AA, wherein the display area AA is used to display images. An auxiliary packaging structure 20 is added to the sealing area NA, and the structure is composed of a main structure 21 and a dislocation structure 22 that are at least partially in contact.

[0048] Combination Figure 6 As shown, when the first substrate 201 and the second substrate 202 are aligned and bonded under vacuum conditions, the substrates are subjected to pressure, and the main structure 21, with the assistance of the dislocation structure 22, slides toward the outside of the display area AA at one end of the main structure 21 that contacts the dislocation structure 22, as shown in FIG. Figure 6 By adding the auxiliary packaging structure 20, it is helpful to reduce the supporting force of the sealant 30 in the sealing area NA, reduce the glass stress between the first substrate and the second substrate, avoid the seesaw effect when the array substrate is supported by the sealant 30, and help to make the thickness of the display area AA consistent.

[0049] After the display panel 200 is aligned and bonded, it is placed under standard atmospheric pressure conditions. The main structure 21 slowly rebounds to its initial state with the assistance of the offset structure 22, that is, the end of the main structure 21 that contacts the offset structure 22 slides toward the display area AA to its initial state, and can also seal the liquid crystal and fix the array substrate and the color film substrate.

[0050] It should be noted that the display panel also includes other film layers, such as a driving circuit layer, a liquid crystal layer, etc., which work together to realize the image display of the display panel. Those skilled in the art can know this based on mature technology and will not be elaborated here.

[0051] In summary, the display panel provided by the embodiment of the present invention includes a display area and a sealing frame area surrounding the display area. An auxiliary packaging structure is added to the side of the sealing frame area away from the display area, and the auxiliary packaging structure is arranged between the first substrate and the second substrate. The structure is composed of a main structure and a dislocation structure that are at least partially in contact. During vacuum bonding, the main structure slides toward the outside of the display area, which is beneficial to reducing the supporting force of the sealing frame glue and reducing the glass stress between the first substrate and the second substrate, thereby solving the problem of yellowing or shining edges of the display panel when displaying a white screen or a grayscale screen, and improving the visual imaging effect of the display panel.

[0052] Optional, continue to refer to Figure 3-Figure 5 As shown, the sealing area NA further includes a sealing glue 30 , and the sealing glue 30 is located on a side of the auxiliary packaging structure 20 close to the display area AA.

[0053] Specifically, when the array substrate and the color filter substrate are aligned and bonded under vacuum conditions, the frame sealant 30 undergoes a cross-linking polymerization reaction and solidifies through UV curing and / or thermal curing, thereby sealing the liquid crystal and fixing the array substrate and the color filter substrate. Figure 3 As shown, along the first direction Z, the projection of the frame sealant 30 surrounds the display area AA, and the projection of the auxiliary packaging structure 20 surrounds the frame sealant 30. The auxiliary packaging structure 20 surrounds the display area AA, which is beneficial to uniformly reduce the supporting force of the frame sealant 30 around the display area AA during the pressing process, so as to reduce the glass stress of the first substrate 201 and the second substrate 202, and ensure the flatness of the panel around the display area AA.

[0054] Figure 7 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction; Figure 8 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction; Fig. 9 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction; Fig.10 yes Figure 3A cross-sectional schematic diagram of another display panel along the BB' direction. A feasible implementation method, combined with Figure 7-10 As shown, the dislocation structure 22 includes a first sliding surface S1 , and the first sliding surface S1 is in contact with the first substrate 201 or the second substrate 202 .

[0055] Specific, combined Figure 7 As shown, the end surface of the main structure 21 close to the second substrate 202 is fixedly bonded to the second substrate 202, and the end surface of the main structure 21 away from the second substrate 202 is fixedly bonded to the dislocation structure 22. The end surface of the dislocation structure 22 away from the main structure 21 is the first sliding surface S1, and the first sliding surface S1 is in contact with the first substrate 201.

[0056] Combination Figure 8 As shown, during the bonding process, when the first substrate 201 and the second substrate 202 are subjected to extrusion stress, the first sliding surface S1 and the first substrate 201 are dislocated, and the dislocation structure 22 and the main structure 21 close to the end of the dislocation structure 22 slide toward the outside of the display area AA, as shown in FIG. Figure 8 During the sliding process, the dislocation structure 22 and the main structure 21 can reduce the support force of the sealant 30 and the glass stress of the first substrate 201 and the second substrate 202, thereby preventing the display area AA substrate from warping, which is beneficial to improving the yellowing problem of the edge of the display area AA.

[0057] Exemplary, combined Fig. 9 As shown, the end surface of the main structure 21 close to the first substrate 201 can also be fixedly bonded to the first substrate 201, and the end surface of the main structure 21 away from the first substrate 201 can be fixedly bonded to the staggered structure 22, and the end surface of the staggered structure 22 away from the main structure 21 is the first sliding surface S1, and the first sliding surface S1 is in contact with the second substrate 202.

[0058] Combination Fig.10 As shown, during the vacuum bonding process, when the first substrate 201 and the second substrate 202 are subjected to extrusion stress, the first sliding surface S1 and the second substrate 202 are dislocated, and the dislocation structure 22 and the main structure 21 slide along the side away from the display area AA at one end close to the dislocation structure 22, as shown in FIG. Fig.10 The dislocation structure 22 and the main structure 21 can reduce the support force of the sealant 30 and the glass stress of the first substrate 201 and the second substrate 202, thereby preventing the substrate of the display area AA from warping and improving the yellowing problem at the edge of the display area AA.

[0059] Fig.11 yes Figure 3 A schematic cross-sectional view of another display panel along the BB' direction; Fig.12 yes Figure 3A cross-sectional schematic diagram of another display panel along the BB' direction. A feasible implementation method, combined with Fig.11 and Fig.12 As shown, the dislocation structure 22 includes a second sliding surface S2, and the main structure 21 is at least partially in contact with the second sliding surface S2.

[0060] Exemplary, combined Fig.11 As shown, the end surface of the main structure 21 close to the second substrate 202 is fixedly bonded to the second substrate 202, the end surface of the staggered structure 22 close to the first substrate 201 is fixedly bonded to the first substrate 201, the end surface of the staggered structure 22 close to the main structure 21 is the second sliding surface S2, and the end surface of the main structure 21 close to the staggered structure 22 is at least partially in contact with the second sliding surface S2.

[0061] Combination Fig.12 As shown, during the vacuum bonding process, the main structure 21 and the second sliding surface S2 are dislocated, and one end of the main structure 21 close to the dislocation structure 22 slides along the second sliding surface S2 toward the side away from the display area AA, as shown in FIG. Fig.12 During the sliding process, the main structure 21 can reduce the support force of the sealant 30 and the glass stress of the first substrate 201 and the second substrate 202, thereby preventing the substrate of the display area AA from warping, which is beneficial to improving the yellowing problem of the edge of the display area AA.

[0062] Optional, combined Figure 7-Figure 12 As shown, the main structure 21 includes a sealing glue 210 , and the dislocation structure 22 includes a lubricating layer 220 .

[0063] Specifically, the main structure 21 and the sealant 30 can be made of the same material. For example, the original main structure 30 can be divided into two parts, the sealant 30 is arranged on the side close to the display area AA, and the main structure 21 is arranged on the side away from the display area AA. The sealant 30 is bonded to the first substrate 201 or the second substrate 202 normally to ensure reliability; and the lubricating layer 220 is applied to one end surface of the main structure 21. The lubricating layer 220 can reduce the friction between the main structure 21 and the first substrate 201 or the second substrate 202.

[0064] Combination Figure 7-10 As shown, when the first substrate 201 and the second substrate 202 are vacuum pressed together, the main structure 21 can slide toward the outside of the display area AA along the first sliding surface S1 of the lubricating layer 220 due to the pressure; or, Fig.11 and Fig.12As shown, the main structure 21 can slide toward the outside of the display area AA along the second sliding surface S2 of the lubricating layer 220 due to pressure, which can reduce the supporting force of the frame sealant 210, reduce the glass stress of the substrate, avoid the substrate of the display area AA from warping, and improve the problem of yellowing of the edge of the display area AA.

[0065] Fig.13 yes Figure 4 A schematic cross-sectional view of a display panel along the CC' direction; Fig.14 yes Figure 4 A schematic cross-sectional view of another display panel along the CC' direction; Fig.15 yes Figure 4 A schematic cross-sectional view of another display panel along the CC' direction; Fig.16 yes Figure 4 A schematic cross-sectional view of another display panel along the CC' direction; Fig.17 yes Figure 4 FIG. 4 is a schematic cross-sectional view of another display panel along the CC′ direction.

[0066] A feasible implementation method is to combine Figure 4 , Figure 13-Figure 17 As shown, the main structure 21 includes a support column 211, and the offset structure 22 includes a slider 221; the end of the support column 211 close to the first substrate 201 is fixed to the first substrate 201, and the end of the slider 221 close to the second substrate 202 is fixed to the second substrate 202; or, the end of the support column 211 close to the second substrate 202 is fixed to the second substrate 202, and the end of the slider 221 close to the first substrate 201 is fixed to the first substrate 201.

[0067] Specific, combined Figure 4 , Figure 13-Figure 17 As shown, the main structure 21 is composed of a plurality of support columns 211 arranged at intervals, and the dislocation structure 22 adopts a slider 221. The materials of the support column 211 and the slider 221 can be but are not limited to PS (Polystyrene, PS, polystyrene), metal materials, PV materials, etc. The support column 211 is fixedly bonded on the side of the second substrate 202 close to the first substrate 201, and the triangular slider 221 is fixedly bonded on the side of the first substrate 201 close to the second substrate, and the inclined surface of the slider 221 is the second sliding surface S2. In another feasible embodiment, the slider 221 is fixedly bonded on the side of the second substrate 202 close to the first substrate 201, and the main structure 21 is fixedly bonded on the side of the first substrate 201 close to the second substrate, which are not shown one by one here.

[0068] During the vacuum bonding process, when the first substrate 201 and the second substrate 202 are subjected to extrusion stress, the main structure 21 slides along the second sliding surface S2 toward the side away from the display area AA, as shown in the direction of the arrow in the figure, thereby reducing the supporting force of the frame sealing glue 30 and reducing the glass stress of the first substrate 201 and the second substrate 202.

[0069] A feasible implementation method is to continue to combine Figure 13-Figure 15 As shown, the second sliding surface S2 includes an inclined surface or a concave arc surface, and the second sliding surface S2 is oriented away from the display area AA.

[0070] Specific, combined Fig.13 As shown, the second sliding surface S2 is set to be an inclined surface away from the display area AA, combined with Fig.14 and Fig.15 As shown, the second sliding surface S2 is set to be a concave arc surface away from the display area AA, which is beneficial to reducing the friction between the main structure 21 and the slider 221, accelerating the speed of reducing the supporting force of the frame sealant 30 and reducing the glass stress of the first substrate 201 and the second substrate 202, and avoiding the display area AA from warping due to excessive instantaneous stress to a greater extent, further ensuring the uniform thickness of the display area.

[0071] A feasible implementation method is to continue to combine Fig.16 and Fig.17 As shown, the second sliding surface S2 includes at least two step surfaces arranged in a gradient, the step surfaces include a first step surface and a second step surface; the second step surface is located on the side of the first step surface away from the display area AA; along the first direction (along the Z direction in the figure), the thickness of the dislocation structure 22 corresponding to the second step surface is less than the thickness of the dislocation structure 22 corresponding to the first step surface. The first direction is parallel to the direction from the second substrate 202 to the first substrate 201.

[0072] Specific, combined Fig.16 and Fig.17 As shown, the second sliding surface S2 can also be set as a step surface with a gradient setting, with a first step surface close to the display area AA and a second step surface located away from the display area AA from the first step surface, and the thickness h1 of the slider 221 corresponding to the first step surface is less than the thickness h2 of the slider 221 corresponding to the second step surface. This step structure is conducive to reducing the friction between the main structure 21 and the slider 221 during vacuum bonding, accelerating the movement of the main structure 21 to the outside of the display area AA, thereby accelerating the speed of reducing the supporting force of the frame sealant 30 and reducing the glass stress of the first substrate 201 and the second substrate 202, and avoiding the display area AA from warping due to excessive instantaneous stress to a greater extent, and further ensuring the thickness of the display area is consistent.

[0073] A feasible implementation method is to continue to combine Fig.15 and Fig.17 As shown, the main structure 21 includes a third sliding surface S3, which is in contact with the second sliding surface S2; the third sliding surface S3 includes at least two gradient surfaces with gradient settings; the gradient surface includes a first gradient surface and a second gradient surface; the second gradient surface is located on the side of the first gradient surface away from the display area AA; along the first direction Z, the thickness of the main structure 21 corresponding to the second gradient surface is greater than the thickness of the main structure 21 corresponding to the first gradient surface; wherein the first direction is the direction from the second substrate 202 to the first substrate 201.

[0074] Furthermore, the end surface of the main structure 21 close to the slider 221 can also be structurally designed. Fig.17 As shown, the end surface of one side of the main structure 21 close to the slider 221 is set to be a third sliding surface S3 with a gradient setting, there is a first gradient surface close to the display area AA, and a second gradient surface located on the first gradient surface away from the display area AA, the thickness of the main structure 21 corresponding to the first gradient surface is less than the thickness of the main structure 21 corresponding to the second gradient surface, so that the third sliding surface S3 is aligned with the inclination angle of the second sliding surface S2 of the slider 221. This gradient structure design is also conducive to reducing the friction between the main structure 21 and the slider 221 during vacuum bonding, accelerating the movement of the main structure 21 to the outside of the display area AA, thereby accelerating the speed of reducing the supporting force of the frame sealant 30 and reducing the glass stress of the first substrate 201 and the second substrate 202, and avoiding the display area AA from warping due to excessive instantaneous stress to a greater extent, and further ensuring the thickness of the display area is consistent.

[0075] A feasible implementation method, continue to refer to Figure 4 As shown, along the first direction Z, the projection of the frame sealant 30 surrounds the display area AA, the projection of the staggered structure 22 surrounds the frame sealant 30, the main structure 21 includes a plurality of spaced substructures 211, and the projection of the substructure 211 at least partially overlaps with the projection of the staggered structure 22.

[0076] Specific, combined Figure 4 As shown, a “patterning” preparation process can be used to arrange the main structure 21 into a plurality of spaced substructures 211 , the projections of the plurality of substructures 211 evenly surround the sealant 30 and at least partially overlap with the projections of the staggered structures 22 .

[0077] Furthermore, combined with Fig.13 As shown, the display panel 200 also includes a support structure 40 located in the display area AA, and the substructure 211 can be prepared in the same process as the support structure 40 of the display area AA, that is, the substructure 211 is the support column 211 in the figure. In other embodiments, the substructure 211 can also be prepared in the same layer as other metal layers of the display panel 200, and it is no longer necessary to show them one by one.

[0078] The present application can reduce the preparation process and the difficulty of preparing the auxiliary packaging structure 20 by configuring the main structure 21 to be a plurality of spaced substructures 211. The surface design of the second sliding surface S2 of the support column 221 and the slider 221 can refer to Figure 13-Figure 17 As shown, they will not be shown one by one here.

[0079] The term "patterning" in this article specifically refers to a non-whole-layer structure, that is, a structure in which a whole layer of material is first formed during the manufacturing process and then a specific shape is carved out.

[0080] Fig.18 yes Figure 4 A schematic cross-sectional view of another display panel along the BB' direction; Fig.19 yes Figure 3 A cross-sectional schematic diagram of another display panel along the CC' direction is shown in FIG. Fig.18 and Fig.19 As shown, optionally, the auxiliary packaging structure 20 further includes an isolation structure 23 , and the isolation structure 23 is located on a side surface of the frame sealing glue 30 close to the main structure 21 .

[0081] Specifically, an isolation structure 23 may be further provided between the frame sealing glue 30 and the main structure 21 , so that during vacuum bonding, the melted frame sealing glue 30 can be prevented from adhering to the main structure 21 , which is beneficial for separating the main structure 21 from the frame sealing glue 30 , thereby ensuring that the main structure 21 slides toward the outside of the display area AA, thereby reducing the supporting force of the frame sealing glue 30 .

[0082] Based on the same inventive concept, an embodiment of the present invention further provides a method for preparing a display panel, which is used to prepare the display panel provided by the above embodiment. Fig. 20 is a schematic flow chart of a method for manufacturing a display panel provided by an embodiment of the present invention; Fig.21 yes Figure 3 A schematic diagram of a manufacturing process of a display panel along the BB' direction; Fig. 22 yes Figure 3 A schematic diagram of a manufacturing process of a display panel along the BB' direction;

[0083] Fig.23 yes Figure 3 Schematic diagram of the preparation process of a display panel along the BB' direction. Figure 3 , Figure 4 , Figure 5 and Figure 20-23 As shown, the method for preparing a display panel provided in the example of the present application includes:

[0084] S101, preparing a first substrate and a second substrate.

[0085] The display panel includes a display area and a sealing frame area surrounding the display area.

[0086] Specific, combined Figure 21-23 As shown, the first substrate 201 may be an array substrate of the display panel 200, and the second substrate 202 may be a color filter substrate of the display panel 200; or, the first substrate 201 may be a color filter substrate of the display panel 200, and the second substrate 202 may be an array substrate of the display panel 200. The array substrate and the color filter substrate are prepared separately, and the array substrate and the color filter substrate have various film layers, which can be known by those skilled in the art according to mature technology, and will not be described one by one here.

[0087] S102 , providing an auxiliary packaging structure in a sealing frame area of ​​the first substrate and / or the second substrate.

[0088] The auxiliary packaging structure includes a main structure and a dislocation structure, and the main structure and the dislocation structure are at least partially in contact.

[0089] Specifically, as shown, in the process of preparing the display panel, a feasible implementation method is combined with Fig.21 As shown, the auxiliary packaging structure 20 can be arranged in the sealing frame area NA of the first substrate 201; a feasible implementation method, combined with Fig. 22 As shown, the auxiliary packaging structure 20 can be arranged in the sealing area NA on the second substrate 202; in a feasible implementation manner, the main structure 21 can be arranged in the sealing area NA of the first substrate 201, and the dislocation structure 22 can be arranged in the sealing area NA of the second substrate 202; in a feasible implementation manner, combined with Fig.23 As shown, the main structure 21 can be disposed in the sealing area NA of the second substrate 202 , and the dislocation structure 22 can be disposed in the sealing area NA of the first substrate 201 .

[0090] S103, aligning and laminating the first substrate and the second substrate.

[0091] During the bonding process, the end of the main structure that contacts the dislocation structure slides in a direction away from the display area.

[0092] Specifically, continue to combine Figure 21-23 As shown, a sealant 30 is applied on one of the first substrate 201 and the second substrate 202 in advance, and liquid crystal is dripped on the other substrate. Figure 6As shown, under vacuum conditions, a bonding force P is applied to the first substrate 201 and the second substrate 202 for alignment bonding, and the frame sealant 30 is cured by cross-linking polymerization reaction through UV curing and / or thermal curing, thereby sealing the liquid crystal and fixing the array substrate and the color filter substrate; at the same time, with the assistance of the dislocation structure 22, the main structure 21 slides in a direction away from the display area AA at one end of the main structure 21 that contacts the dislocation structure 22, that is, the main structure 21 slides toward the outside of the display area AA (as shown in FIG. Figure 6 As shown in the direction of the arrow in the figure, we can obtain Figure 5 The structure shown.

[0093] During the sliding process, the main structure 21 can reduce the supporting force of the frame sealant 30, reduce the glass stress between the first substrate 201 and the second substrate 202, avoid the substrate in the display area AA from warping, and help improve the yellowing problem at the edge of the display area AA.

[0094] After the display panel 200 is aligned and bonded, it is placed under standard atmospheric pressure conditions. With the assistance of the offset structure 22, the main structure 21 slowly rebounds to its initial state along the first sliding layer S1, that is, the end of the main structure 21 that contacts the offset structure 22 slides toward the display area AA to its initial state, and can also seal the liquid crystal and fix the array substrate and the color film substrate.

[0095] Optionally, in step 103, during the bonding process, an angle formed between the main structure and the first substrate or between the main structure and the second substrate is an acute angle.

[0096] Specifically, continue to combine Figure 6 As shown, during the bonding process, the angle α between the main structure 21 and the first substrate 201 or between the main structure 21 and the second substrate 202 is an acute angle, which can release the squeezing force during the bonding process, reduce the supporting force of the frame sealing glue 30 in the frame sealing area NA, and avoid the substrate in the display area AA from warping, and can also play a role in supporting the first substrate 201 and the second substrate 202.

[0097] Fig.24 1 is a schematic diagram of a method for manufacturing a display panel provided by an embodiment of the present invention. Figure 3 , Figure 6 , Figure 7 , Fig.24 As shown, the dislocation structure 22 includes a first sliding surface S1. The method for preparing a display panel provided in the example of the present application includes:

[0098] S201, providing a first substrate and a second substrate.

[0099] Specifically, refer to step 101 in the above embodiment. Fig.21 and Fig. 22 shown.

[0100] S202 , a main structure and a dislocation structure are arranged in a sealing frame area of ​​the first substrate or the second substrate, and the main structure and the dislocation structure are fixed.

[0101] Specifically, continue to combine Fig.21 and Fig. 22 As shown, the main structure 21 and the dislocation structure 22 are fixedly bonded to the sealing frame area NA of the first substrate 201 or the second substrate 202. A feasible implementation method is combined with Fig.21 As shown, the end of the main structure 21 close to the first substrate 201 is fixed to the first substrate 201, and the end of the main structure 21 away from the first substrate 201 is fixed to the dislocation structure 22; a feasible implementation method, combined with Fig. 22 As shown, one end of the main structure 21 close to the first substrate 201 is fixed to the dislocation structure 22, and the dislocation structure 22 is fixed to the second substrate. The dislocation structure 22 may be a lubricating layer.

[0102] S203 , aligning and contacting the dislocation structure on the first substrate and the main structure on the second substrate.

[0103] The dislocation structure 22 includes a first sliding surface S1 , and the first sliding surface S1 is an end surface of the dislocation structure 22 away from the main structure 21 .

[0104] S204, aligning and laminating the first substrate and the second substrate.

[0105] Specific, combined Figure 6 As shown, a sealant 30 is applied to one of the first substrate 201 and the second substrate 202 in the box, and liquid crystal is dripped on the other substrate. The first sliding surface S1 of the dislocation structure 22 is aligned with the first substrate 201, and a bonding force P is applied to the first substrate 201 and the second substrate 202 under vacuum conditions for alignment and bonding. During the bonding process, the first sliding layer S1 is dislocated with the first substrate 201, and the main structure 21 and the dislocation structure 22 slide toward the outside of the display area AA (as shown in FIG. Figure 6 As shown in the direction of the arrow in the figure, we can obtain Figure 5 The structure shown.

[0106] During the sliding process, the main structure 21 and the dislocation structure 22 jointly reduce the supporting force of the frame sealant 30, reduce the glass stress between the first substrate 201 and the second substrate 202, avoid the substrate in the display area AA from warping, and help improve the problem of yellowing at the edge of the display area AA.

[0107] Fig.25 1 is a schematic diagram of a method for manufacturing a display panel provided by an embodiment of the present invention. Figure 4 , Figure 11-Figure 17 , Figure 23-Figure 25 As shown, the dislocation structure includes a second sliding surface S2; the method for preparing the display panel provided in the example of the present application includes:

[0108] S301, providing a first substrate and a second substrate.

[0109] Specifically, refer to step 101 in the above embodiment. Fig.23 shown.

[0110] S302 , disposing a staggered structure in the sealing frame area of ​​the first substrate, the staggered structure being fixed to the first substrate; and disposing a main body structure in the sealing frame area of ​​the second substrate, the main body structure being fixed to the second substrate.

[0111] Specific, combined Fig.23 As shown, the staggered structure 22 is fixedly bonded in the sealing area NA of the first substrate 201, and the main structure 21 is fixedly bonded in the sealing area NA of the second substrate 202. The main structure 21 can adopt a sealing glue, and the staggered structure 22 can adopt a lubricating layer; or the main structure 21 can adopt a support column, and the staggered structure 22 can adopt a slider.

[0112] S303, aligning the dislocation structure on the first substrate and the main structure on the second substrate, so that the main structure is at least partially in contact with the second sliding surface.

[0113] S304, aligning and bonding the first substrate and the second substrate.

[0114] Specific, combined Fig.23 As shown, a sealant 30 is applied on one of the first substrate 201 and the second substrate 202 in advance, and liquid crystal is dripped on the other substrate. The second sliding surface S2 of the offset structure 22 of the first substrate is aligned and contacted with the main structure 21 of the second substrate 202 at least partially.

[0115] Combination Figure 6 As shown, under vacuum conditions, a bonding external force P is applied to the first substrate 201 and the second substrate 202 for alignment and bonding. During the bonding process, the main structure 21 and the second sliding layer S2 are dislocated, and the main structure 21 slides along the second sliding layer S2 toward the outside of the display area AA (as shown in the direction of the arrow in the figure). During the sliding process, the main structure 21 and the dislocation structure 22 jointly reduce the supporting force of the frame sealing glue 30, reduce the glass stress between the first substrate 201 and the second substrate 202, avoid the display area AA substrate from warping, and help to improve the problem of yellowing at the edge of the display area AA.

[0116] After the display panel 200 is aligned and bonded, it is placed under standard atmospheric pressure. With the assistance of the offset structure 22, the main structure 21 slowly rebounds along the second sliding layer S2 to the initial state, and the following is obtained: Figure 11-Figure 17The structure shown, that is, the end of the main structure 21 that contacts the dislocation structure 22 slides toward the display area AA to the initial state, can also play the role of sealing the liquid crystal and fixing the array substrate and the color film substrate.

[0117] Based on the same inventive concept, an embodiment of the present invention further provides a display device. Fig.26 A schematic diagram of the structure of a display device provided by an embodiment of the present invention is shown in FIG. Fig.26 As shown, the display device includes any display panel provided in the above embodiments. Fig.26 As shown, the display device 300 includes a display panel 200. Therefore, the display device also has the beneficial effects of the display panel in the above embodiment, and the similarities can be understood by referring to the above explanation of the display panel, which will not be repeated below.

[0118] The display device 300 provided in the embodiment of the present invention can be Fig.26 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 invention do not specifically limit this.

[0119] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: The display panel comprises a display area and a sealing frame area surrounding the display area; the sealing frame area comprises an auxiliary packaging structure, the display panel further comprises a first substrate and a second substrate arranged opposite to each other, and the auxiliary packaging structure is located between the first substrate and the second substrate; The auxiliary packaging structure includes a main structure and a staggered structure, wherein the main structure and the staggered structure are at least partially in contact with each other; the main structure includes a sealing glue; The dislocation structure includes a first sliding surface, and the first sliding surface is in contact with the first substrate or the second substrate; or the dislocation structure includes a second sliding surface, and the main structure is in at least partial contact with the second sliding surface; When pressure is applied, the main structure slides outward, which can reduce the supporting force of the frame sealant and reduce the glass stress between the first substrate and the second substrate.

2. The display panel according to claim 1, characterized in that: The dislocation structure includes a lubricating layer.

3. The display panel according to claim 1, characterized in that: The dislocation structure includes the second sliding surface, the main structure includes a support column, and the dislocation structure includes a slider; One end of the support column close to the first substrate is fixed to the first substrate, and one end of the slider close to the second substrate is fixed to the second substrate; or one end of the support column close to the second substrate is fixed to the second substrate, and one end of the slider close to the first substrate is fixed to the first substrate.

4. The display panel according to claim 3, characterized in that: The second sliding surface includes an inclined surface or a concave arc surface, and the second sliding surface is oriented in a direction away from the display area.

5. The display panel according to claim 3, characterized in that: The second sliding surface includes at least two step surfaces arranged in a gradient, and the step surfaces include a first step surface and a second step surface; the second step surface is located on a side of the first step surface away from the display area; Along a first direction, a thickness of the dislocation structure corresponding to the second step surface is smaller than a thickness of the dislocation structure corresponding to the first step surface; wherein the first direction is parallel to a direction from the first substrate to the second substrate.

6. The display panel according to claim 4 or 5, characterized in that: The main structure comprises a third sliding surface, wherein the third sliding surface contacts the second sliding surface; The third sliding surface includes at least two gradient surfaces with gradient settings; the gradient surface includes a first gradient surface and a second gradient surface; the second gradient surface is located on a side of the first gradient surface away from the display area; Along a first direction, a thickness of the main structure corresponding to the second gradient surface is greater than a thickness of the main structure corresponding to the first gradient surface; wherein the first direction is parallel to a direction from the first substrate to the second substrate.

7. The display panel according to claim 1, characterized in that: The frame sealing area further includes frame sealing glue, and the frame sealing glue is located on a side of the auxiliary packaging structure close to the display area.

8. The display panel according to claim 7, wherein along the first direction, the projection of the sealant surrounds the display area, and the projection of the staggered structure surrounds the sealant; or, the main structure comprises a plurality of substructures distributed at intervals, and the projection of the substructure at least partially overlaps with the projection of the staggered structure; wherein, The first direction is parallel to a direction from the first substrate to the second substrate.

9. The display panel according to claim 7, characterized in that: The auxiliary packaging structure further includes an isolation structure, and the isolation structure is located on a side surface of the frame sealing glue close to the main structure.

10. A method for preparing a display panel, characterized in that: The preparation method comprises: Prepare a first substrate and a second substrate; wherein the display panel includes a display area and a sealing frame area surrounding the display area; An auxiliary packaging structure is provided in the sealing frame area of ​​the first substrate and / or the second substrate; the auxiliary packaging structure includes a main structure and a dislocation structure, and the main structure and the dislocation structure are at least partially in contact; the dislocation structure includes a first sliding surface, and the first sliding surface is in contact with the first substrate or the second substrate; or the dislocation structure includes a second sliding surface, and the main structure is at least partially in contact with the second sliding surface; The first substrate and the second substrate are aligned and bonded together; wherein, during the bonding process, one end of the main structure that contacts the dislocation structure slides in a direction away from the display area.

11. The preparation method according to claim 10, characterized in that: During the bonding process, an angle formed between the main structure and the first substrate or between the main structure and the second substrate is an acute angle.

12. The preparation method according to claim 10, characterized in that: An auxiliary packaging structure is provided in a sealing frame area of ​​the first substrate and / or the second substrate, including: A main structure and a dislocation structure are arranged in a sealing frame area of ​​the first substrate or the second substrate, wherein the main structure and the dislocation structure are fixed; The dislocation structure includes a first sliding surface, which is an end surface of the dislocation structure away from the main structure, and aligning and bonding the first substrate and the second substrate, including: Aligning and contacting the first sliding surface with the second substrate; The first substrate and the second substrate are aligned and bonded together.

13. The preparation method according to claim 10, characterized in that: The dislocation structure includes a second sliding surface; An auxiliary packaging structure is provided in a sealing frame area of ​​the first substrate and / or the second substrate, including: A dislocation structure is provided in the sealing frame area of ​​the first substrate, and the dislocation structure is fixed to the first substrate; a main structure is provided in the sealing frame area of ​​the second substrate, and the main structure is fixed to the second substrate; Aligning and laminating the first substrate and the second substrate, comprising: Aligning the dislocation structure on the first substrate with the main structure on the second substrate, wherein the main structure is at least partially in contact with the second sliding surface; The first substrate and the second substrate are aligned and bonded together.

14. A display device, characterized in that: Comprising the display panel according to any one of claims 1 to 9.

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