Display panel, preparation method thereof and display device

Abstract

The invention discloses a display panel and a preparation method thereof and a display device, and relates to the technical field of display, the display panel comprises a display area and a non-display area surrounding the display area, the display panel further comprises an array substrate, a color film substrate, frame glue and two waterproof supporting pieces, the color film substrate and the array substrate are oppositely arranged, and the frame glue is arranged between the color film substrate and the non-display area. The frame glue is located between the array substrate and the color film substrate and located in the non-display area, and the two waterproof supporting pieces are arranged between the array substrate and the color film substrate and located on the inner side and the outer side of the frame glue respectively. According to the technical scheme, the water vapor blocking performance of the display panel can be improved, and then the anti-corrosion performance of the display panel is improved; meanwhile, the waterproof supporting piece can play a supporting role, the display panel is prevented from being damaged under the action of external force, and the service life of the display panel is prolonged.

Description

Technical Field

[0001] The present invention relates 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] Narrow-frame or borderless display panels are popular among consumers because of their good visual experience and beautiful design. Display panels generally include an array substrate and a color film substrate, which are sealed by a sealant to form a display panel. However, the sides of narrow-frame or borderless display panels are more easily exposed to the environment, and water vapor in the environment can easily enter the interior of the display panel from the interface where the sealant contacts the array substrate and the interface where the sealant contacts the color film substrate. In other words, the display panel has poor water vapor barrier performance, which in turn causes corrosion to the internal components of the display panel. Summary of the invention

[0003] The main purpose of the present invention is to provide a display panel and a method for preparing the same, and a display device, in order to improve the water vapor barrier performance of the display panel, and further improve the anti-corrosion performance of the display panel.

[0004] To achieve the above object, the display panel provided in the present invention includes a display area and a non-display area surrounding the display area, and the display panel also includes:

[0005] An array substrate;

[0006] A color filter substrate, wherein the color filter substrate is arranged opposite to the array substrate;

[0007] Frame glue, the frame glue is arranged between the array substrate and the color filter substrate and is located in the non-display area;

[0008] Two waterproof support members are provided between the array substrate and the color film substrate, and are respectively located at the inner and outer sides of the frame glue.

[0009] In one embodiment, the waterproof support members are all made of elastic material.

[0010] In one embodiment, the dimension of the waterproof support member along the direction from the array substrate to the color filter substrate is defined as H1, the thickness of the display panel is defined as H0, H1=(1.05-1.1)H0; and / or,

[0011] The dimension of the waterproof support member along the direction perpendicular to the array substrate to the color filter substrate is 25 μm-50 μm.

[0012] In one embodiment, the array substrate includes a thin film transistor substrate, a circuit layer, and an organic planar layer which are stacked in sequence, the circuit layer includes a circuit located in a gate drive circuit area of ​​the array substrate, a surface of the organic planar layer facing away from the thin film transistor substrate is provided with a via structure for exposing the circuit, and a first conductive layer is provided at the via structure;

[0013] The display panel further includes a protection layer, which covers the first conductive layer and is at least partially located in the via structure.

[0014] In one embodiment, the dimension of the protective layer along the direction from the array substrate to the color filter substrate is defined as H2, the thickness of the display panel is defined as H0, H2=(0.85-0.9)H0; and / or,

[0015] The material of the protective layer is the same as that of the waterproof support member.

[0016] In one embodiment, at least one of an interface between the array substrate and the sealant and an interface between the color filter substrate and the sealant is a curved surface.

[0017] In one embodiment, the interface between the array substrate and the sealant and the interface between the color filter substrate and the sealant are both concave-convex surfaces.

[0018] The present invention also provides a method for preparing a display panel, comprising the following steps:

[0019] Provide array substrates, color film substrates, frame glue and waterproof support materials;

[0020] Using the waterproof support material to manufacture two waterproof support members at intervals on the peripheral surface of the array substrate, wherein one waterproof support member is located outside the other waterproof support member;

[0021] Applying the frame glue between the two waterproof support members;

[0022] The color film substrate is placed on the two waterproof support members and the frame glue, and pressed together to obtain a display panel.

[0023] In one embodiment, a via structure is provided on a surface of the array substrate facing the color filter substrate, and before the step of placing the color filter substrate on the two waterproof support members and the frame glue, the step further includes:

[0024] Making a protective layer on the surface of the array substrate corresponding to the via structure;

[0025] And / or, before the step of using the waterproof support member material to manufacture two waterproof support members spaced apart on the peripheral surface of the array substrate, the step further includes:

[0026] Making the peripheral surface of the array substrate into a curved surface;

[0027] Before the step of placing the color film substrate on the two waterproof support members and the frame glue, the method further includes:

[0028] The peripheral surface of the color film substrate is made into a curved surface.

[0029] The present invention further provides a display device, which includes the display panel as described above.

[0030] The display panel provided by the present invention comprises an array substrate, a color film substrate, a frame glue and two waterproof support members, the color film substrate is arranged opposite to the array substrate, the frame glue is located between the array substrate and the color film substrate, and is located in the non-display area, and the two waterproof support members are arranged between the array substrate and the color film substrate, and are respectively located on the inner and outer sides of the frame glue. The arrangement of the two waterproof support members can effectively prevent water vapor from entering the interior of the display panel through the interface where the frame glue contacts the array substrate and the interface where the frame glue contacts the color film substrate, thereby improving the water vapor barrier performance of the display panel, and further improving the anti-corrosion performance of the display panel; at the same time, the waterproof support member can also play a supporting role, preventing the display panel from being damaged under the action of external force, thereby extending the service life of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0032] Figure 1 A schematic cross-sectional structure diagram of an embodiment of a display panel provided by the present invention;

[0033] Figure 2 A schematic diagram of a top-view cross-sectional structure of the waterproof support member and the frame glue distribution in the display panel provided by the present invention;

[0034] Figure 3 A schematic diagram of manufacturing a first engaging groove and a via structure in the method for manufacturing a display panel provided by the present invention;

[0035] Figure 4 A schematic diagram of manufacturing a second bite groove in the method for manufacturing a display panel provided by the present invention;

[0036] Figure 5 A schematic diagram of manufacturing a waterproof support member and a protective layer in the method for manufacturing a display panel provided by the present invention;

[0037] Figure 6 A schematic diagram of the process of the method for preparing the display panel provided by the present invention.

[0038] Description of Figure Numbers:

[0039] 100. Display panel; 1. Array substrate; 11. Thin film transistor substrate; 12. Circuit layer; 121. First circuit; 122. Second circuit; 13. Organic planar layer; 131. First bite groove; 14. Via structure; 141. First via structure; 142. Second via structure; 15. First conductive layer; 2. Color film substrate; 21. Color filter substrate; 22. Black matrix; 23. Second conductive layer; 231. Second bite groove; 3. Frame glue; 31. First bite protrusion; 32. Second bite protrusion; 4. Liquid crystal layer; 5. Alignment layer; 6. Waterproof support; 7. Protective layer; 8. Photomask; 9. Photoresist layer.

[0040] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0042] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] At present, the sides of display panels with narrow bezels or no bezels are more easily exposed to the environment. Water vapor in the environment can easily enter the interior of the display panel from the interface between the frame glue and the array substrate and the interface between the frame glue and the color film substrate. That is, the display panel has poor water vapor barrier performance, which in turn causes corrosion to the internal components of the display panel.

[0045] In view of the above technical problems, the present invention proposes a display panel 100 , aiming to improve the water vapor barrier performance of the display panel 100 , thereby improving the anti-corrosion performance of the display panel 100 .

[0046] See also Figure 1 and Figure 2 In one embodiment of the present invention, the display panel 100 includes a display area and a non-display area surrounding the display area. The display panel 100 also includes an array substrate 1, a color film substrate 2, a frame glue 3 and two waterproof support members 6. The color film substrate 2 and the array substrate 1 are arranged opposite to each other. The frame glue 3 is arranged between the array substrate 1 and the color film substrate 2 and is located in the non-display area. The two waterproof support members 6 are both arranged between the array substrate 1 and the color film substrate 2 and are respectively located on the inner and outer sides of the frame glue 3.

[0047] Specifically, the display panel 100 is divided into a display area and a non-display area. The non-display area is located on the periphery of the display area. The array substrate 1 and the color filter substrate 2 are arranged in a facing manner, and the two are sealed by a sealant 3. The sealant 3 is correspondingly arranged in the non-display area. The sealant 3 is generally in a ring-shaped shape like a Chinese character "hui". Correspondingly, the waterproof support member 6 is also in a ring-shaped shape like a Chinese character "hui". The two waterproof support members 6 are respectively arranged on the inner and outer sides of the sealant 3. The waterproof support member 6 located on the outer side of the sealant 3 can effectively prevent water vapor from entering the interior of the display panel 100 through the contact interface between the array substrate 1 and the sealant 3 and the contact interface between the color filter substrate 2 and the sealant 3, improving the water vapor barrier performance of the display panel 100. At the same time, the waterproof support member 6 located on the inner side of the sealant 3 can further improve the water vapor barrier performance of the display panel 100. In addition, the two waterproof support members 6 are arranged between the array substrate 1 and the color filter substrate 2, which can play a good supporting role, prevent the display panel 100 from being damaged under external force, and extend the service life of the display panel. When the display panel 100 is a liquid crystal display panel, the liquid crystal layer 4 is located between the array substrate 1 and the color filter substrate 2 and in the display area. Under the supporting action of the two waterproof support members 6, it can effectively prevent liquid crystal from overflowing under external force.

[0048] The technical solution of the present invention can effectively improve the water vapor barrier performance of the display panel 100 by arranging the waterproof support members 6 on the inner and outer sides of the sealant 3, and further improve the corrosion resistance of the display panel 100. Moreover, the waterproof support members 6 are arranged between the array substrate 1 and the color filter substrate 2, which can play a good supporting role, prevent the display panel 100 from being damaged under external force, and extend the service life of the display panel 100.

[0049] It should be noted that the waterproof support member 6 is a structural member with a supporting function made of a hydrophobic material. The hydrophobic material is not limited herein as long as it has hydrophobic properties. Since the waterproof support member 6 itself has good hydrophobicity, arranging waterproof support members on both the inner and outer sides of the sealant 3 can effectively prevent water vapor from entering the interior of the display panel 100 through the contact interface between the array substrate 1 and the sealant 3 and the contact interface between the color filter substrate 2 and the sealant 3, and thus effectively improve the water vapor barrier performance of the display panel 100.

[0050] In some embodiments, the materials of the waterproof support members 6 are all elastic materials. That is, in this embodiment, the materials of the waterproof support members 6 have good elasticity on the basis of having hydrophobic properties. Thus, the waterproof support members 6 play a good elastic supporting role between the array substrate 1 and the color filter substrate 2, effectively preventing the display panel 100 from being damaged under external force and extending the service life of the display panel 100. When the display panel 100 is a liquid crystal display panel, it can effectively prevent the liquid crystal display panel from being damaged under external force and prevent liquid crystal from overflowing.

[0051] Optionally, the waterproof support member 6 is generally trapezoidal, having a large end and a small end. Herein, the size of the large end of the waterproof support member 6 is larger than that of its small end. The large end of the waterproof support member 6 abuts against the array substrate 1, and the small end abuts against the color filter substrate 2, thereby facilitating processing and manufacturing. Of course, according to actual needs, the waterproof support member 6 can also adopt other reasonable shapes, such as a cylindrical shape or other reasonable shapes.

[0052] Please refer to Figure 2 , the sealant 3 is located in the non-display area at the edge of the display panel 100 and is in a ring-shaped figure-eight shape. The waterproof support members 6 provided inside and outside the sealant 3 are both in a ring-shaped figure-eight shape. That is to say, the waterproof support members 6 are also provided in the non-display area at the edge of the display panel 100. Thereby, it can effectively prevent water vapor from entering the interior of the display panel 100 through the contact interface between the array substrate 1 and the sealant 3 and the contact interface between the color filter substrate 2 and the sealant 3 at the edge of the display panel 100, improving the water vapor barrier performance of the display panel 100. At the same time, the two waterproof support members 6 are provided between the array substrate 1 and the color filter substrate 2, which can play a good supporting role, prevent the display panel 100 from being damaged under external force, and extend the service life of the display panel; moreover, the two waterproof support members 6 are provided in the non-display area at the edge of the display panel 100, which will not affect the display effect of the display area.

[0053] In some embodiments, the cross-sectional size of the figure-eight-shaped waterproof support member 6 gradually decreases along the direction from the array substrate 1 to the color filter substrate 2. That is to say, the end of the figure-eight-shaped waterproof support member 6 facing the array substrate 1 is the large end, and the end of the figure-eight-shaped waterproof support member 6 facing the color filter substrate 2 is the small end. The size of the large end is smaller than that of the small end, thereby facilitating processing and manufacturing.

[0054] In some embodiments, the material of the waterproof support member 6 is an elastic material. Optionally, the material of the waterproof support member 6 is at least one of silicone rubber, fluororubber, polytetrafluoroethylene, polyurethane elastomer, and waterproof elastic combination (its main components include propylene glycol methyl ether acetate, (3-methoxy-1-butyl) acetate, and acrylic resin).

[0055] Define the size (i.e., height) of the waterproof support member 6 along the direction from the array substrate 1 to the color filter substrate 2 as H1, and the thickness of the display panel 100 as H0, and H1 = (1.05 - 1.1)H0.

[0056] Since the waterproof support member 6 has good elasticity, the size of the waterproof support member 6 along the direction from the array substrate 1 to the color filter substrate 2 is designed to be slightly larger than the thickness of the display panel 100. Thereby, it can not only play a better auxiliary supporting role but also play a good role in blocking water vapor.

[0057] Optionally, the dimension (i.e., width) of the waterproof support member 6 along the direction perpendicular to the array substrate 1 to the color film substrate 2 is 25 μm-50 μm (e.g., 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, and interval values ​​between any two end points). The design of the waterproof support member 6 with an appropriate width can not only play a good auxiliary supporting role, but also play a good role in blocking water vapor.

[0058] Please refer again Figure 1 In some embodiments, the array substrate 1 includes a thin film transistor substrate 11, a circuit layer 12 and an organic planar layer 13 which are stacked in sequence, the circuit layer 12 includes a circuit located in a gate drive circuit area of ​​the array substrate 1, and a via structure 14 for exposing the circuit is provided on the surface of the organic planar layer 13 facing away from the thin film transistor substrate 11, and a first conductive layer 15 is provided at the via structure 14; the display panel 100 also includes a protective layer 7, the protective layer 7 covers the first conductive layer 15, and is at least partially located in the via structure 14.

[0059] Specifically, the array substrate 1 is basically divided into an external bus area, a clock signal area, a gate driver circuit area (GDL for short) and a display area from the outside to the inside, so as to arrange corresponding circuits in each area. The circuits in the gate driver circuit area include a first circuit 121 and a second circuit 122. The surface of the organic planar layer 13 (i.e., the PFA layer) facing away from the thin film transistor substrate 11 is provided with a first via structure 141 exposing the first circuit 121 and a second via structure 142 exposing the second circuit 122. The first conductive layer 15 is provided in the first via structure 141 and the second via structure 142. The first conductive layer 15 can be an ITO layer. The protective layer 7 covers the first conductive layer 15 and is at least partially located in the first via structure 141 and the second via structure 142. The arrangement can effectively prevent water vapor from entering the vias to corrode the first circuit 121 and the second circuit 122, and further improve the anti-corrosion performance of the display panel 100.

[0060] In some embodiments, the dimension (i.e., height) of the protective layer 7 along the direction from the array substrate 1 to the color film substrate 2 is defined as H2, the thickness of the display panel 100 is H0, and H2=(0.85-0.9)H0. Such a design can play a better role in blocking water vapor and can also play a role in auxiliary support.

[0061] In some embodiments, a waterproof support member 6 is provided on both the inner and outer sides of the frame glue 3, and a protective layer 7 is provided at the via structure 14. The waterproof support member 6 plays a role in blocking water vapor and providing main support, and the protective layer 7 plays a role in blocking water vapor and providing auxiliary support. The waterproof support member 6 always plays a supporting role for the display panel 100 under normal circumstances, and the protective layer 7 increases the overall supporting strength of the waterproof support member 6 by supporting the array substrate 1 when subjected to external force, thereby preventing the display panel 100 from being damaged by external force.

[0062] In some embodiments, the height H2 of the protective layer 7 and the height H1 of the waterproof support member 6 satisfy: H1:H2=(1.1-1.3):1. With such a design, the protective layer 7 can play an effective auxiliary supporting role. Only when the display panel 100 is subjected to external force, the protective layer 7 and the waterproof support member 6 play a supporting role at the same time, thereby increasing the supporting strength and more effectively preventing the display panel 100 from being damaged by external force.

[0063] In some embodiments, the material of the protective layer 7 can be the same as that of the waterproof support member 6, so that they can be made simultaneously using the same waterproof material, which facilitates and simplifies their production.

[0064] Please refer again Figure 1 In some embodiments, at least one of the interfaces between the array substrate 1 and the sealant 3 and the interfaces between the color filter substrate 2 and the sealant 3 is a curved surface.

[0065] The curved surface is an uneven surface, such as a wavy curved surface or a sawtooth curved surface. Optionally, the interface where the array substrate 1 contacts the frame glue 3 and the interface where the color film substrate 2 contacts the frame glue 3 are both curved surfaces. Compared with the existing interface which is a flat design, the interface of the present invention adopts a curved surface design, which can make the contact area between the frame glue 3 and the array substrate 1 and the contact area between the frame glue 3 and the color film substrate 2 relatively large, and it is not easy to have a bubble gap at the contact interface, that is, it can effectively reduce the bubble gap at the interface of the frame glue 3, thereby more effectively preventing the water vapor in the environment from entering the interior from the interface of the frame glue 3, and further improving the anti-corrosion performance of the display panel 100.

[0066] It should be noted that the specific shape and size of the curved surface are not limited, as long as the contact interface is not a plane.

[0067] The embodiment of the present invention designs the interface between the array substrate 1 and the frame glue 3 and the interface between the color film substrate 2 and the frame glue 3 to be curved surfaces, which can effectively reduce the bubble gap at the interface of the frame glue 3, thereby effectively preventing water vapor in the environment from entering the interior through the interface of the frame glue 3, and further improving the corrosion resistance of the display panel 100.

[0068] In one embodiment of the present invention, a first bite groove 131 is provided at the interface between the array substrate 1 and the sealant 3 , and a first bite protrusion 31 is formed on one side of the sealant 3 corresponding to the array substrate 1 , and the first bite protrusion 31 is snapped into the first bite groove 131 .

[0069] Specifically, the surface of the array substrate 1 corresponding to the non-display area and facing the color film substrate 2 is provided with a first bite groove 131. The shape of the first bite groove 131 can be a triangle, a square, an inverted trapezoid or other reasonable shapes, which are not limited here, and the specific size of the first bite groove 131 is also not limited. The shape and size of the first bite protrusion 31 are adapted to the shape and size of the first bite groove 131. After the display panel 100 is assembled, the first bite protrusion 31 is snapped into the first bite groove 131, that is, the frame glue 3 can be well bitten with the array substrate 1, thereby effectively reducing the bubble gap at the contact interface between the two, and preventing water vapor from entering the interior through the contact interface to cause corrosion.

[0070] Of course, in some other embodiments, a first biting protrusion is provided at the interface where the array substrate 1 contacts the frame glue 3, and correspondingly, a first biting groove is formed on the side of the frame glue 3 corresponding to the array substrate 1, so that the frame glue 3 can also be well bitten with the array substrate 1, thereby effectively reducing the bubble gap at the contact interface between the two, and preventing water vapor from entering the interior through the contact interface and causing corrosion.

[0071] In one embodiment of the present invention, a second bite groove 231 is provided at the interface between the color film substrate 2 and the sealant 3 , and a second bite protrusion 32 is formed on one side of the sealant 3 corresponding to the color film substrate 2 . The second bite protrusion 32 is snapped into the second bite groove 231 .

[0072] Specifically, the surface of the color film substrate 2 corresponding to the non-display area and facing the array substrate 1 is provided with a second bite groove 231. The shape of the second bite groove 231 can be a triangle, a square, an inverted trapezoid or other reasonable shapes, which are not limited here, and the specific size of the second bite groove 231 is also not limited. The shape and size of the second bite protrusion 32 are adapted to the shape and size of the second bite groove 231. After the display panel 100 is assembled, the first bite protrusion 31 is snapped into the second bite groove 231, that is, the frame glue 3 can be well bitten with the color film substrate 2, thereby effectively reducing the bubble gap at the contact interface between the two, and preventing water vapor from entering the interior through the contact interface to cause corrosion.

[0073] Of course, in some other embodiments, a second biting protrusion is provided at the interface where the color film substrate 2 contacts the frame glue 3, and correspondingly, a first biting groove is formed on the side of the frame glue 3 corresponding to the color film substrate 2, so that the frame glue 3 can also be well bitten with the color film substrate 2, thereby effectively reducing the bubble gap at the contact interface between the two, and preventing water vapor from entering the interior through the contact interface and causing corrosion.

[0074] In some embodiments, the interface between the array substrate 1 and the sealant 3, and the interface between the color filter substrate 2 and the sealant 3 are both concave and convex surfaces. This can achieve good bite between the sealant 3 and the array substrate 1, and good bite between the sealant 3 and the color filter substrate 2, thereby effectively reducing the bubble gap at the contact interface, preventing water vapor from entering the interior through the contact interface and causing corrosion; it is also convenient for the production of the interface.

[0075] In some embodiments, a plurality of first bite grooves 131 are spaced apart at the interface where the array substrate 1 contacts the frame glue 3 , and a plurality of first bite protrusions 31 are spaced apart on one side of the frame glue 3 corresponding to the array substrate 1 , and one first bite protrusion 31 is correspondingly snapped into one first bite groove 131 .

[0076] Specifically, a plurality of first bite grooves 131 are arranged at intervals on the surface of the array substrate 1 corresponding to the non-display area and facing the color film substrate 2. Optionally, the plurality of first bite grooves 131 are evenly distributed in an array, and the shape and size of the first bite grooves 131 are not limited. Correspondingly, a plurality of first bite protrusions 31 are formed at intervals on the side of the frame glue 3 facing the array substrate 1. Optionally, the plurality of first bite protrusions 31 are evenly distributed in an array and correspond to the plurality of first bite grooves 131 one by one. During assembly, one first bite protrusion 31 is correspondingly snapped into one first bite groove 131, so that the frame glue 3 can better bite the array substrate 1, thereby more effectively reducing the bubble gap at the contact interface between the two, and preventing water vapor from entering the interior through the contact interface to cause corrosion.

[0077] It should be noted that the multiple first engaging grooves 131 have the same shape and the same size, which facilitates the processing and manufacturing of the multiple first engaging grooves 131 .

[0078] In some embodiments, a plurality of second bite grooves 231 are arranged at intervals at the interface where the color film substrate 2 and the frame glue 3 contact each other, and a plurality of second bite protrusions 32 are formed at intervals on one side of the frame glue 3 corresponding to the color film substrate 2 , and one second bite protrusion 32 is correspondingly engaged in one second bite groove 231 .

[0079] Specifically, a plurality of second bite grooves 231 are arranged at intervals on the surface of the color film substrate 2 corresponding to the non-display area and facing the array substrate 1. Optionally, the plurality of second bite grooves 231 are evenly distributed in an array, and the shape and size of the second bite grooves 231 are not limited. Correspondingly, a plurality of second bite protrusions 32 are formed at intervals on the side of the frame glue 3 facing the color film substrate 2. Optionally, the plurality of second bite protrusions 32 are evenly distributed in an array and correspond to the plurality of second bite grooves 231 one by one. During assembly, one second bite protrusion 32 is correspondingly snapped into one second bite groove 231, so that the frame glue 3 can better bite the color film substrate 2, thereby more effectively reducing the bubble gap at the contact interface between the two, and preventing water vapor from entering the interior through the contact interface to cause corrosion.

[0080] It should be noted that the multiple second engaging grooves 231 have the same shape and the same size, which facilitates the processing and manufacturing of the multiple second engaging grooves 231 .

[0081] Please refer again Figure 1 In some embodiments, the array substrate 1 includes a thin film transistor substrate 11, a circuit layer 12 and an organic planar layer 13 which are stacked in sequence, and a plurality of first bite grooves 131 are arranged at intervals on the surface of the organic planar layer 13 facing away from the thin film transistor substrate 11.

[0082] Specifically, the thin film transistor substrate 11 includes a base substrate and thin film transistors arranged in an array on the base substrate, and the base substrate can be a glass substrate. The circuit layer 12 is made of a conductive material, and the circuit layer 12 is electrically connected to the thin film transistor. The organic flat layer 13 is made of an organic insulating material. The organic flat layer 13 can flatten the array substrate 1, reduce the unevenness of the substrate surface, and provide a smoother foundation for the deposition of subsequent film layers, thereby improving the display uniformity of the display panel 100; and can also reduce parasitic capacitance, reduce interference during signal transmission, improve signal transmission efficiency, and thus improve display quality. The first bite groove 131 is opened on the surface of the organic flat layer 13 facing away from the thin film transistor substrate 11, and can be specifically made by photolithography.

[0083] Optionally, the organic planarizing layer 13 is made of perfluoroalkoxyalkane (PFA for short). PFA has a good protective effect and covers the surface of the circuit layer 12. It can effectively prevent the circuit layer 12 from being corroded by water vapor, oxygen, acid and alkali substances in the external environment, thereby extending the service life and improving the reliability and stability of the display panel 100.

[0084] Optionally, the first biting groove 131 is an inverted trapezoidal groove, and the depth of the first biting groove 131 is half of the thickness of the organic planar layer 13 .

[0085] It should be noted that the width of the first bite groove 131 is not limited and is determined according to actual conditions. The number of the first bite grooves 131 is determined according to the width of the first bite grooves 131 .

[0086] See also Figure 1 and Figure 4 In some embodiments of the present invention, the color film substrate 2 includes a color filter substrate 21, a black matrix 22 and a second conductive layer 23 which are stacked in sequence, and a plurality of second bite grooves 231 are arranged at intervals on the surface of the second conductive layer 23 which is opposite to the black matrix 22.

[0087] Specifically, the color filter substrate 21 is a key component of the color film substrate 2, and its function is to realize color display. In the liquid crystal display device, the light emitted by the white backlight source is decomposed into red, green, and blue (RGB) primary colors after passing through the color filter substrate 21. The black matrix 22 plays the role of shading and isolation to effectively prevent color interference between pixels. The black matrix 22 can absorb ambient light and stray light emitted by the backlight source to improve the contrast of the display. The second conductive layer 23 can be used as an electrode. In the liquid crystal display panel 100, it can be used to apply an electric field to control the arrangement direction of the liquid crystal molecules; at the same time, the second conductive layer 23 can also play the role of signal transmission, transmitting the electrical signal of the external circuit to the color filter substrate 21. Optionally, the second conductive layer 23 can be selected as an ITO (indium tin oxide) layer. The second bite groove 231 is opened on the surface of the second conductive layer 23 facing away from the black matrix 22, and can be made by photolithography.

[0088] Optionally, the second engaging groove 231 is an inverted trapezoidal groove, and the depth of the second engaging groove 231 is half of the thickness of the second conductive layer 23 .

[0089] It should be noted that the width of the second bite groove 231 is not limited and is determined according to actual conditions. The number of the second bite grooves 231 is determined according to the width of the first bite groove 131 .

[0090] In some embodiments, the display panel 100 is a liquid crystal display panel, and the liquid crystal display panel further includes a liquid crystal layer 4, which is located between the array substrate 1 and the color filter substrate 2 and is located in the display area. In order to ensure that the liquid crystal molecules in the liquid crystal layer 4 are oriented under the action of the electric field, the liquid crystal panel further includes an alignment layer 5. Optionally, two alignment layers 5 are provided, which are respectively provided between the array substrate 1 and the liquid crystal layer 4, and between the color filter substrate 2 and the liquid crystal layer 4. Specifically, one alignment layer 5 is provided between the second conductive layer 23 and the liquid crystal layer 4, and the other alignment layer 5 is provided between the PFA layer and the liquid crystal layer 4.

[0091] See also Figure 5 and Figure 6 The present invention also provides a method for preparing a display panel 100, comprising the following steps:

[0092] Provide an array substrate 1, a color film substrate 2, a frame glue 3 and waterproof support materials;

[0093] Two waterproof support members 6 are made on the peripheral surface of the array substrate 1 by using a waterproof support member material, and one waterproof support member 6 is located outside the other waterproof support member 6;

[0094] Applying frame glue 3 between two waterproof support members 6;

[0095] The color film substrate 2 is placed on two waterproof support members 6 and the frame glue 3 , and pressed together to obtain the display panel 100 .

[0096] The specific structural arrangement of the array substrate 1 and the color filter substrate 2 in the present invention may refer to the above embodiments, and the specific material of the waterproof support member may refer to the above embodiments, which will not be described one by one here.

[0097] Specifically, the waterproof support member 6 can be manufactured by a graphical method or other reasonable methods, which are not limited here. The two waterproof support members 6 manufactured are both annular structures and have the same height. The two waterproof support members 6 are spaced apart inside and outside and enclosed to form a receiving space. The frame glue 3 is coated in the receiving space and fills the entire receiving space. Therefore, after the color film substrate 2 is pressed, the frame glue 3 can play the effect of sealing and connecting with the color film substrate 2.

[0098] In some embodiments, the waterproof support material is an elastic waterproof support material. As an example, the main components of the waterproof elastic material include propylene glycol methyl ether acetate, 3-methoxy-1-butyl acetate and acrylic resin, which can be purchased directly. Since the waterproof support member 6 has good elasticity, when making the waterproof support member 6, the height dimension of the waterproof support member 6 is designed to be slightly larger than the thickness of the display panel 100, so that it can not only play a good auxiliary support role, but also play a good role in blocking water vapor. At the same time, when the frame glue 3 is subsequently applied, the height of the frame glue 3 is slightly lower than the height of the waterproof support member 6, and the height of the frame glue 3 is slightly lower than the height of the waterproof support member 6. Since the waterproof support member 6 has good elasticity, after the color film substrate 2 is plywood onto the array substrate 1, the frame glue 3 can fill the entire space and play a good sealing connection role. Among them, the height dimension of the waterproof support member 6 can refer to the above embodiment, and will not be repeated here one by one.

[0099] In the present invention, two waterproof support members 6 are first manufactured and then the sealant 3 is coated between the two waterproof support members 6 , wherein the waterproof support members 6 play a role of pre-positioning to facilitate the coating of the sealant, and the operation is relatively simple.

[0100] In some embodiments, a via structure 14 is provided on the surface of the array substrate 1 facing the color filter substrate 2. Before placing the color filter substrate 2 on the two waterproof support members 6 and the sealant 3, the following steps are also included:

[0101] A protection layer 7 is formed on the surface of the array substrate 1 corresponding to the via structure 14 .

[0102] Please refer again Figure 3In some embodiments, the first bite groove 131 and the via structure 14 can be manufactured at the same time. Since the circuits (including the first circuit 121 and the second circuit 122) in the gate driving circuit area and the first bite groove 131 have different depths, a halftone mask (i.e., a halftone mask having two transmittances and capable of simultaneously obtaining patterns of different thicknesses) 8 is used for exposure. The depth of the developed pattern is deeper at the position where the transmittance of the mask 8 is high, and the depth of the developed pattern is shallow at the position where the transmittance of the mask 8 is low. Thus, the first bite groove 131, the first via structure 141 and the second via structure 142 can be manufactured at the same time, and the manufactured first bite groove 131, the first via structure 141 and the second via structure 142 are all inverted trapezoids.

[0103] The material of the protective layer 7 can be selected as a waterproof support material, that is, the material of the protective layer 7 is the same as the material of the waterproof support member 6, thereby the protective layer 7 and the waterproof support member 6 can be manufactured at the same time.

[0104] See also Figure 5 In some embodiments, after the first engagement groove 131, the first via structure 141 and the second via structure 142 are manufactured, the first conductive layer 15 is first manufactured on the first via structure 141 and the second via structure 142, and then a layer of waterproof elastic material is coated on the surface of the PFA layer. The main components of the waterproof elastic material include propylene glycol methyl ether acetate, 3-methoxy-1-butyl acetate and acrylic resin, which can be purchased directly. Since the waterproof elastic material contains a photosensitive agent, etching is not required, and the pattern grooving can be completed by directly exposing and developing through a photomask 8. Since the height of the waterproof support members 6 on both sides of the frame glue 3 is different from the height of the protective layer 7 at the via structure 14, a halftone mask (i.e., a halftone mask having two transmittances, which can simultaneously obtain patterns of different thicknesses) is used for exposure during exposure, and the waterproof support members 6 on both sides of the frame glue 3 and the protective layer 7 at the via structure 14 can be obtained.

[0105] In some embodiments, before the step of using the waterproof support material to make two waterproof support members 6 spaced apart on the peripheral surface of the array substrate 1, the method further includes:

[0106] The peripheral surface of the array substrate 1 is made into a curved surface;

[0107] Before the step of placing the color film substrate 2 on the two waterproof support members 6 and the frame glue 3, the method further includes:

[0108] The peripheral surface of the color filter substrate 2 is made into a curved surface.

[0109] Optionally, the peripheral surface of the array substrate 1 is made into a concave-convex surface, specifically, a plurality of first bite grooves are arranged at intervals; the peripheral surface of the color film substrate 2 is made into a concave-convex surface, specifically, a plurality of second bite grooves are arranged at intervals, wherein the size and shape of the first bite groove 131 and the second bite groove 231 can refer to the above embodiments, and will not be repeated again.

[0110] Please refer again Figure 3 In some embodiments, the organic planar layer 13 is a PFA layer, and the first bite groove 131 can be obtained by patterning the PFA layer. Since PFA contains a photosensitive agent, etching is not required, and the patterning can be completed by directly exposing and developing through the mask 8 to obtain the first bite groove 131. The first bite groove 131 obtained by this method is an inverted trapezoidal groove, and the depth of the first bite groove 131 is half the thickness of the PFA layer. This method is relatively simple to operate and the production process is relatively simplified.

[0111] Please refer again Figure 4 In some embodiments, the second conductive layer 23 is an ITO layer, and the second bite groove 231 can be obtained by patterning the ITO layer. Specifically, a layer of positive photoresist is first coated on the surface of the ITO layer to form a photoresist layer 9, and then the photoresist layer 9 is exposed and developed through a mask 8, the ITO layer is etched, and finally a photoresist removal liquid is added to remove the photoresist layer 9, thereby obtaining the second bite groove 231. The second bite groove 231 obtained by this method is an inverted trapezoidal groove, and the depth of the second bite groove 231 is half the thickness of the ITO layer. The method is relatively simple to operate and the production process is relatively simplified.

[0112] The present invention further provides a display device, which includes a display panel 100. The specific structure of the display panel 100 refers to the above embodiment. Since the display device adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Optionally, the display device is a liquid crystal display device.

[0113] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A display panel, comprising a display area and a non-display area surrounding the display area, characterized in that: The display panel further includes: An array substrate; A color filter substrate, wherein the color filter substrate is arranged opposite to the array substrate; Frame glue, the frame glue is arranged between the array substrate and the color filter substrate and is located in the non-display area; Two waterproof support members are provided between the array substrate and the color film substrate, and are respectively located at the inner and outer sides of the frame glue.

2. The display panel according to claim 1, wherein: The waterproof support members are all made of elastic material.

3. The display panel according to claim 2, wherein: The dimension of the waterproof support member along the direction from the array substrate to the color film substrate is defined as H1, the thickness of the display panel is defined as H0, H1=(1.05-1.1)H0; and / or, The dimension of the waterproof support member along the direction perpendicular to the array substrate to the color filter substrate is 25 μm-50 μm.

4. The display panel according to claim 1, wherein: The array substrate comprises a thin film transistor substrate, a circuit layer and an organic planar layer which are stacked in sequence, the circuit layer comprises a circuit located in a gate drive circuit area of ​​the array substrate, a surface of the organic planar layer facing away from the thin film transistor substrate is provided with a via structure for exposing the circuit, and a first conductive layer is provided at the via structure; The display panel further includes a protection layer, which covers the first conductive layer and is at least partially located in the via structure.

5. The display panel according to claim 4, wherein: The dimension of the protective layer along the direction from the array substrate to the color filter substrate is defined as H2, the thickness of the display panel is defined as H0, H2=(0.85-0.9)H0; and / or, The material of the protective layer is the same as that of the waterproof support member.

6. The display panel according to any one of claims 1 to 5, characterized in that: At least one of an interface between the array substrate and the sealant and an interface between the color filter substrate and the sealant is a curved surface.

7. The display panel according to claim 6, wherein: The interface between the array substrate and the sealant and the interface between the color filter substrate and the sealant are both concave-convex surfaces.

8. A method for preparing a display panel, characterized in that: The following steps are involved: Provide array substrates, color film substrates, frame glue and waterproof support materials; Using the waterproof support material to manufacture two waterproof support members at intervals on the peripheral surface of the array substrate, wherein one waterproof support member is located outside the other waterproof support member; Applying the frame glue between the two waterproof support members; The color film substrate is placed on the two waterproof support members and the frame glue, and pressed together to obtain a display panel.

9. The method for preparing a display panel according to claim 8, wherein: The surface of the array substrate facing the color filter substrate is provided with a via structure, and before the step of placing the color filter substrate on the two waterproof support members and the frame glue, the method further includes: Making a protective layer on the surface of the array substrate corresponding to the via structure; And / or, before the step of using the waterproof support member material to manufacture two waterproof support members spaced apart on the peripheral surface of the array substrate, the step further includes: Making the peripheral surface of the array substrate into a curved surface; Before the step of placing the color film substrate on the two waterproof support members and the frame glue, the method further includes: The peripheral surface of the color film substrate is made into a curved surface.

10. A display device, characterized in that: The display panel comprises the display panel as claimed in any one of claims 1 to 7, or comprises a display panel prepared by the method for preparing a display panel as claimed in any one of claims 8 to 9.

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