Display panel and display device

Abstract

The embodiment of the invention provides a display panel and a display device. The display panel includes: a first substrate including a first base; a second substrate including a second base; the frame sealing structure is located between the first substrate and the second substrate, located in the frame area and surrounding the display area, and the frame sealing structure comprises frame sealing glue and spacer particles located in the frame sealing glue; the limiting structure is located between the first substrate and the second substrate, the limiting structure is located in the frame area, the orthographic projection of the limiting structure on the second substrate and the orthographic projection of the spacer particles on the second substrate are at least partially overlapped, and in the first direction, the size of the spacer particles is smaller than or equal to the size between the limiting structure and the opposite substrate; the first direction is a direction perpendicular to the second substrate. According to the display panel, the size of the limiting structure in the first direction is set, so that the display panels of different sizes can adopt the spacer particles of the same size, the material loss in production is reduced, and the production cost is reduced.

Description

Technical Field

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

[0002] The liquid crystal display panel (LCD) includes an array substrate and a color filter substrate arranged in a cell, and a liquid crystal located between the array substrate and the color filter substrate, and the liquid crystal is located in the display area. A frame sealant surrounding the display area is also arranged between the array substrate and the color filter substrate. In order to prevent the cell gap (Cell Gap) around the LCD panel from being inconsistent with the cell gap (Cell Gap) in the display area, causing color difference problems such as yellowing and bluish, it is necessary to add plastic balls to the frame sealant.

[0003] Different LCD products have different sizes of plastic balls in the frame sealant. Even for products of the same size, the sizes of plastic balls in the frame sealant may be different. For example, the frame sealant materials used for 11-inch and 11.5-inch products are the same, but the sizes of plastic balls in the frame sealant are different. The different sizes of plastic balls used in LCD products result in the need for plastic balls of various sizes, resulting in material losses in production and increased production costs. Summary of the invention

[0004] Embodiments of the present disclosure provide a display panel and a display device to solve or alleviate one or more technical problems in the prior art.

[0005] As a first aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a display panel, including a display area and a frame area arranged around the display area, the display panel including:

[0006] A first substrate, comprising a first base, and a flat layer and a passivation layer sequentially arranged on one side of the first base, wherein the flat layer and the passivation layer are both located in a display area and a frame area;

[0007] A second substrate is arranged in a box with the first substrate, the second substrate comprises a second base, a light shielding layer and a protective layer, the light shielding layer is located on a side of the second base facing the first substrate, the protective layer is located on a side of the light shielding layer facing the first substrate, and both the light shielding layer and the protective layer are located in the display area and the frame area;

[0008] A sealing frame structure is located between the first substrate and the second substrate, is located in the frame area and surrounds the display area, and includes a sealing frame glue and spacer particles located in the sealing frame glue;

[0009] A limiting structure is located between a first substrate and a second substrate. The limiting structure is located in a border area. The orthographic projection of the limiting structure on the second substrate at least partially overlaps with the orthographic projection of the spacer particles on the second substrate. In a first direction, the size of the spacer particles is less than or equal to the size between the limiting structure and an opposing substrate. The opposing substrate is a substrate of the first substrate and the second substrate that is opposite to the limiting structure. The first direction is a direction perpendicular to the second substrate.

[0010] In some embodiments, the limiting structure is convex, and includes a plurality of support bars, and the plurality of support bars are sequentially spaced apart in a direction away from the display area.

[0011] In some embodiments, a dimension of the defined structure in the first direction ranges from 0.2 μm to 1 μm.

[0012] In some embodiments, the limiting structure is in the shape of a protrusion, and the limiting structure is located on the side of the protective layer facing the first substrate. There is an overlapping area between the orthographic projection of the limiting structure on the second substrate and the orthographic projection of the frame-sealing glue on the second substrate. The frame-sealing glue also includes a first edge area located outside the overlapping area. The first edge area is away from the display area relative to the overlapping area, and the frame-sealing glue located in the first edge area is in contact with and connected to the surface of the protective layer.

[0013] In some embodiments, the second substrate further includes a spacer column located in the display area, the spacer column is located on a side of the protective layer facing the first substrate, and the limiting structure and the spacer column are located in the same layer.

[0014] In some embodiments, the limiting structure is in a convex shape, and the limiting structure is located between the light shielding layer and the protective layer.

[0015] In some embodiments, the defining structure and the light shielding layer are located on the same layer.

[0016] In some embodiments, the defining structure is convex, the second substrate further includes a color resist layer located in the display area, the color resist layer is located between the second base and the protective layer, and the defining structure and the color resist layer are located in the same layer.

[0017] In some embodiments, the defining structure is convex, the defining structure is located on the first substrate, and the defining structure is located between the planar layer and the passivation layer.

[0018] In some embodiments, the defining structure is located on the same layer as the planar layer.

[0019] In some embodiments, the orthographic projection of the sealing frame structure on the second substrate is located within the orthographic projection of the defining structure on the first substrate.

[0020] In some embodiments, the defining structure includes a groove opened on a surface of the planar layer facing the passivation layer, and an orthographic projection of the sealing frame structure on the first substrate is located within an orthographic projection of the groove on the first substrate.

[0021] As a second aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a display device, including the display panel in the embodiments of the present disclosure.

[0022] In the related art, display panels of different sizes use spacer particles of different sizes. By adopting the technical solution of the embodiment of the present disclosure, the size of the spacer particles used can be adjusted by setting the size of the limiting structure in the first direction. Display panels of different sizes can set the size of the limiting structure in the first direction as needed, so that the sizes of the spacer particles used by display panels of different sizes are the same. Therefore, display panels of different sizes can share spacer particles of the same size. In production, only one size of spacer particles is needed to meet the needs of multiple display panels, reducing material losses in production, avoiding time consumption in replacing spacer particles, saving manpower and material resources, and reducing production costs.

[0023] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0025] Figure 1 It is a structural schematic diagram of a display panel in a related technology;

[0026] Figure 2 is a plan view of a display panel in an embodiment of the present disclosure;

[0027] Figure 3 for Figure 2 The CC cross-sectional view of the display panel in one embodiment is shown;

[0028] Figure 4 is a plan view schematic diagram of a display panel in another embodiment of the present disclosure;

[0029] Figure 5 for Figure 4 The CC cross-sectional view of the display panel in one embodiment is shown;

[0030] Figure 6 is a plan view schematic diagram of a display panel in another embodiment of the present disclosure;

[0031] Figure 7 for Figure 6 The CC cross-sectional view of the display panel in one embodiment is shown;

[0032] Figure 8 is a plan view schematic diagram of a display panel in another embodiment of the present disclosure;

[0033] Fig. 9 for Figure 8 The CC cross-sectional view of the display panel in one embodiment is shown;

[0034] Fig.10 for Figure 8 The CC cross-sectional schematic diagram of the display panel in another embodiment is shown;

[0035] Fig.11 for Figure 8 The CC cross-sectional schematic diagram of the display panel in another embodiment is shown;

[0036] Fig.12 for Figure 8 The CC cross-sectional schematic diagram of the display panel in another embodiment is shown;

[0037] Fig.13 for Figure 8 The CC cross-sectional schematic diagram of the display panel in another embodiment is shown;

[0038] Fig.14 for Figure 8 The CC cross-sectional diagram of the display panel in another embodiment is shown.

[0039] Description of reference numerals:

[0040] 11. First substrate; 12. Insulating layer; 13. Flat layer; 14. First transparent electrode layer; 15. Passivation layer; 16. Second transparent electrode layer; 17. First alignment film; 21. Second substrate; 22. Shading layer; 23. Color group layer; 24. Protective layer; 25. Spacer column; 26. Second alignment film; 30. Sealing structure; 31. Sealing glue; 32. Spacer particles; 40. Limiting structure; 41. Support bar. DETAILED DESCRIPTION

[0041] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure, and different embodiments may be combined arbitrarily without conflict. Therefore, the drawings and descriptions are considered to be illustrative in nature and not restrictive.

[0042] Figure 1FIG. 1 is a schematic diagram of a structure of a display panel in a related technology. Figure 1 As shown, the display panel includes a first substrate and a second substrate arranged in a box. The first substrate may be an array substrate, and the second substrate may be a color resist substrate. The display panel includes a display area AA and a frame area BB surrounding the display area AA, and the display panel also includes a liquid crystal located between the first substrate and the second substrate and located in the display area AA. The frame sealant 31 is located in the frame area BB and is arranged around the display area AA.

[0043] The first substrate may include a first substrate 11 and an insulating layer 12, a flat layer 13, a first transparent electrode layer 14, a passivation layer 15, a second transparent electrode layer 16 and a first alignment film 17 sequentially arranged on the side of the first substrate 11 facing the second substrate, wherein the first transparent electrode layer 14, the second transparent electrode layer 16 and the first alignment film 17 are located in the display area AA. The insulating layer 12, the flat layer 13 and the passivation layer 15 are located in the display area AA and the frame area BB.

[0044] The second substrate may include a second substrate 21 and a light shielding layer 22, a color blocking layer 23 and a protective layer 24 arranged in sequence on the second substrate 21 facing the first substrate. The protective layer may also be called an OC layer (over coat). In order to ensure the cell gap (Cell Gap) of the display area AA, the second substrate also includes a spacer column 25 (PS) located on the side of the protective layer 24 facing the first substrate. The color blocking layer 23 and the spacer column 25 are located in the display area AA, and the light shielding layer 22 and the protective layer 24 are located in the display area AA and the frame area BB. The spacer column 25 is used to support between the first substrate and the second substrate to maintain the consistency of the cell gap between the first substrate and the second substrate. In order to prevent the cell gap around the display panel from being inconsistent with the cell gap in the display area AA, causing color difference problems such as yellowing and bluish, a plastic ball is arranged in the frame sealant 31, and the plastic ball is used to support between the first substrate and the second substrate in the frame area BB to maintain the consistency of the cell gap between the first substrate and the second substrate in the frame area BB.

[0045] refer to Figure 1 , the gap H1 between the first substrate and the second substrate in the frame area BB = the thickness of the first transparent electrode layer 14 + the thickness of the second transparent electrode layer 16 + the thickness of the passivation layer 15 in the display area AA + 2*the thickness of the alignment film + the cell gap in the display area AA + the thickness of the first protective layer 24 in the display area AA + the thickness of the color resist layer 23 - the thickness of the passivation layer 15 in the frame area BB - the thickness of the first protective layer 24 in the frame area BB - the thickness of the light shielding layer 22 in the frame area BB. The plastic ball is supported between the first substrate and the second substrate in the frame area BB, so the size of the plastic ball is the same as H1.

[0046] From the formula of H1, it can be seen that the cell gap of different products will lead to different sizes of plastic balls. Table 1 shows the sizes of plastic balls used in display panels of different sizes.

[0047] Table 1 shows the frame sealant materials and plastic ball diameters used in some dimensions of the display panel

[0048]

[0049] Here, “←” means the same as the left side.

[0050] As can be seen from Table 1, the frame sealant 31 used in display panels of different sizes is made of the same material, but the sizes of the plastic balls used are different. Even for products of the same size, the sizes of the plastic balls in the frame sealant 31 may be different due to differences in the preparation process. The use of plastic balls of different sizes causes material loss during production and increases production costs.

[0051] Figure 2 is a schematic plan view of a display panel in an embodiment of the present disclosure, Figure 3 for Figure 2 The diagram shows a CC cross-sectional view of a display panel in one embodiment.

[0052] The present disclosure provides a display panel. Figure 2 and Figure 3 As shown, the display panel includes a display area AA and a frame area BB arranged around the display area AA. The display panel includes a first substrate and a second substrate.

[0053] The first substrate includes a first substrate 11 and a flat layer 13 and a passivation layer 15 sequentially arranged on the side of the first substrate 11 facing the second substrate, and the flat layer 13 and the passivation layer 15 are both located in the display area AA and the frame area BB. The second substrate is arranged in a cell with the first substrate.

[0054] The second substrate includes a second substrate 21, a light shielding layer 22 and a protective layer 24. The light shielding layer 22 is located on the side of the second substrate 21 facing the first substrate, and the protective layer 24 is located on the side of the light shielding layer 22 facing the first substrate. Both the light shielding layer 22 and the protective layer 24 are located in the display area AA and the frame area BB. The light shielding layer 22 in the display area AA can be called a black matrix.

[0055] like Figure 2 and Figure 3 As shown, the display substrate may further include a sealing frame structure 30 , which is located between the first substrate and the second substrate, and is located in the frame area BB and is arranged around the display area AA. The sealing frame structure 30 includes a sealing glue 31 and spacer particles 32 located in the sealing glue 31 . Figure 2 FIG. 3 shows two boundaries 311 and 312 of the sealant 31. The spacer particles 32 may be spherical in shape.

[0056] The display substrate may further include a defining structure 40 , wherein the defining structure 40 is located between the first substrate 11 and the second substrate 21 , and the defining structure 40 is located in the frame area BB. Figure 2 4 shows two boundaries 401 and 402 of the defining structure 40. The orthographic projection of the defining structure 40 on the second substrate 21 at least partially overlaps with the orthographic projection of the spacer particles 32 on the second substrate 21. In the first direction, the size of the spacer particles 32 is less than or equal to the size between the defining structure 40 and the opposite substrate, and the opposite substrate is the substrate of the first substrate and the second substrate that is opposite to the defining structure 40. The first direction is a direction perpendicular to the first substrate 11 or the second substrate 21.

[0057] It can be understood that when the defining structure 40 is disposed on the first substrate, the opposite substrate is the second substrate; when the defining structure 40 is disposed on the second substrate, the opposite substrate is the first substrate.

[0058] According to the technical solution of the embodiment of the present disclosure, the limiting structure 40 is located between the first substrate 11 and the second substrate 21 and in the border area BB, and the orthographic projection of the limiting structure 40 on the second substrate 21 at least partially overlaps with the orthographic projection of the spacer particles 32 on the second substrate 21; in the first direction, the size of the spacer particles 32 is less than or equal to the size between the limiting structure 40 and the opposite substrate, so that by setting the size of the limiting structure 40 in a direction perpendicular to the second substrate 21, the size of the spacer particles 32 used can be changed.

[0059] In the related art, display panels of different sizes use spacer particles 32 of different sizes. By adopting the technical solution of the embodiment of the present disclosure, the size of the spacer particles 32 used can be adjusted by setting the size of the limiting structure 40 in the first direction. Display panels of different sizes can set the size of the limiting structure 40 in the first direction as needed, so that the sizes of the spacer particles 32 used by display panels of different sizes are the same. Therefore, display panels of different sizes can share spacer particles 32 of the same size. In production, only one size of spacer particles 32 is needed to meet the needs of multiple display panels, reducing material losses in production, avoiding time consumption in replacing spacer particles 32, saving manpower and material resources, and reducing production costs.

[0060] In one embodiment, Figure 3 As shown, the limiting structure 40 may be convex, that is, the limiting structure 40 is protruding on the surface on which the limiting structure 40 is formed. Figure 3 In the figure, the limiting structure 40 is located on the surface of the protective layer 24 facing the first substrate, and the limiting structure 40 is convex. It can be understood that the limiting structure 40 is convex toward the first substrate relative to the surface of the protective layer 24 facing the first substrate.

[0061] In one embodiment, the limiting structure 40 may be located on the second substrate. Figure 3 As shown, the limiting structure 40 is located on the side of the protective layer 24 facing the first substrate, and the orthographic projection of the limiting structure 40 on the second substrate 21 and the orthographic projection of the frame sealant 31 on the second substrate 21 have an overlapping area S1. The frame sealant 31 also includes a first edge area S2 located outside the overlapping area, and the first edge area S2 is away from the display area AA relative to the overlapping area S1. The frame sealant 31 located in the first edge area S2 is in contact with the surface of the protective layer 24.

[0062] like Figure 3 As shown, in such a structure, in the overlapping area, the sealant 31 is in contact with the surface of the limiting structure 40, and in the first edge area S2, the sealant 31 is in contact with the surface of the protective layer 24, and the limiting structure 40 is convex, so that the overlapping area S1 and the first edge area S2 form a stepped surface, and the sealant 31 is in contact with the stepped surface, which can increase the contact area between the sealant 31 and the second substrate, further increase the bonding force between the sealant 31 and the second substrate, and improve the stability of the display panel. In addition, the first edge area S2 is far away from the display area AA relative to the overlapping area S1, that is, the first edge area S2 is located outside the sealant structure 30, which makes the sealant 31 contact with the surface of the protective layer 24 on the outside, and the adhesion between the sealant 31 and the surface of the protective layer 24 is better than the adhesion between the sealant 31 and the surface of the limiting structure 40, which can improve the sealing ability of the sealant 31.

[0063] like Figure 2 As shown, the limiting structure 40 can be arranged around the display area AA, and the first edge area S2 is located at the periphery of the limiting structure 40 and surrounds the limiting structure 40. Thus, the limiting structure 40 can limit the spacer particles 32 in the entire sealing glue 31, so that the spacer particles 32 in the sealing structure 30 can be of the same size.

[0064] Figure 4 is a plan view of a display panel in another embodiment of the present disclosure, Figure 5 for Figure 4 FIG. 1 is a schematic CC cross-sectional view of a display panel in one embodiment. Figure 5As shown, the orthographic projection of the limiting structure 40 on the second substrate 21 can be located within the orthographic projection of the frame sealant 31 on the second substrate 21, and the frame sealant 31 can also include a second edge region S3 located outside the overlapping region, and the second edge region S3 is closer to the display area AA relative to the overlapping region. The frame sealant 31 located in the second edge region S3 is in contact with the surface of the protective layer 24. In such a structure, the overlapping region S1 forms a stepped surface with the first edge region S2, and the overlapping region S1 forms a stepped surface with the second edge region S3, which further increases the contact area between the frame sealant 31 and the second substrate, increases the bonding force between the frame sealant 31 and the second substrate, and improves the stability of the display panel.

[0065] Exemplarily, the second edge region S3 may be disposed around the display area AA.

[0066] In the related art, the minimum size of the spacer particles used in 8.4-inch display panels and 11.5-inch display panels is 4.0 μm, and the size of the spacer particles used in display panels of other sizes is larger than 4.0 μm, for example, the size of the spacer particles used in the 10.4-inch display panel is 4.5 μm. In order to allow the 10.4-inch display panel to use 4.0 μm spacer particles, the size of the limiting structure in the 10.4-inch display panel in the first direction can be set to be larger, so that the 10.4-inch display panel can use 4.0 μm spacer particles, so that the three sizes of display panels can share the same size of spacer particles.

[0067] like Figure 3 As shown, the second substrate may further include a spacer column 25 (PS) located in the display area AA, and the spacer column 25 is located on the side of the protective layer 24 facing the first substrate. The limiting structure 40 and the spacer column 25 are located on the same layer. The limiting structure 40 and the spacer column 25 are located on the same layer, which can be understood as that the limiting structure 40 and the spacer column 25 are formed by a single mask process. The limiting structure 40 and the spacer column 25 can be made of the same material. In this way, compared with the related art, the number of masking times of the display panel will not be increased.

[0068] The dimension of the defining structure 40 in the first direction may be smaller than the dimension of the spacer column 25 in the first direction. When preparing the defining structure 40 and the spacer column 25, a spacer material is coated on the side of the color group layer 25 away from the second substrate 21; the spacer material is exposed and developed using a gray tone mask to form the spacer column 25 in the display area and the defining structure 40 in the frame area.

[0069] In one embodiment, the size of the defining structure 40 in the first direction may range from 0.2 μm to 1 μm, that is, the size h of the defining structure 40 in the first direction satisfies 0.2 μm ≤ d ≤ 1 μm. In actual implementation, the size of the defining structure 40 in the first direction may be set to one of 0.2 μm to 1 μm according to the size of the display panel, so that display panels of different sizes can share a spacer particle 32 of the same size. Setting the size of the defining structure 40 in the first direction to range from 0.2 μm to 1 μm can meet the requirements of display panels of most sizes, so that display panels of various sizes can share a spacer particle 32 of the same size.

[0070] like Figure 3 As shown, the dimension h of the defining structure 40 in the first direction satisfies 0.2 μm≤d≤1 μm. Exemplarily, the dimension h of the defining structure 40 in the first direction may be one of 0.2 μm, 0.4 μm, 0.6 μm, 0.8 μm, and 1.0 μm.

[0071] In one embodiment, the defining structure 40 may be convex. The defining structure 40 may include a plurality of support bars 41, and the plurality of support bars 41 are sequentially arranged in a direction away from the display area AA.

[0072] Figure 6 is a plan view of a display panel in another embodiment of the present disclosure, Figure 7 for Figure 6 FIG. 1 is a schematic CC cross-sectional view of a display panel in one embodiment. Figure 6 and Figure 7 As shown, the limiting structure 40 includes a plurality of support bars 41, and the plurality of support bars 41 are sequentially arranged in a spaced relationship in a direction away from the display area AA. In such a structure, the contact surface between the frame sealant 31 and the second substrate is a serrated surface, which further increases the contact area between the frame sealant 31 and the surface of the second substrate, increases the bonding force between the frame sealant 31 and the second substrate, and improves the performance of the product in the reliability test.

[0073] like Figure 6 As shown, the support bar 41 may be disposed around the display area AA.

[0074] For example, Figure 7 As shown, the width w1 of the support bar 41 may range from 0 to 500 μm, and the width of the support bar 41 may be the dimension of the support bar 41 perpendicular to its extension direction. For example, w1 may be one of 250 μm, 300 μm, 400 μm, and 500 μm.

[0075] like Figure 7As shown, the gap w2 between adjacent support bars 41 ranges from 0 to 500 μm. For example, w2 may be one of 100 μm, 200 μm, 300 μm, 400 μm, and 500 μm.

[0076] Figure 8 is a plan view of a display panel in another embodiment of the present disclosure, Fig. 9 for Figure 8 FIG. 1 is a schematic CC cross-sectional view of a display panel in one embodiment. Figure 8 and Fig. 9 As shown, the limiting structure 40 may be convex, and the limiting structure 40 may be located between the light shielding layer 22 and the protective layer 24. In such a structure, the protective layer 24 may completely cover the limiting structure 40, so that the sealant 31 may be in contact with the surface of the protective layer 24, thereby improving the bonding force between the sealant 31 and the second substrate and improving the performance of the display panel.

[0077] For example, the limiting structure 40 can be located in the same layer as the light shielding layer 22. That is, the limiting structure 40 can be formed by a single masking process with the light shielding layer 22. In this way, the number of masking times of the second substrate will not be increased, and the cost of the second substrate will not be affected.

[0078] In other embodiments, the defining structure 40 and the light shielding layer 22 may be formed by different mask processes.

[0079] The material of the defining structure 40 may be the same as that of the light shielding layer 22. For example, the material of the defining structure 40 may include a black resin material.

[0080] The orthographic projection of the sealing frame structure 30 on the second substrate 21 may be located within the orthographic projection of the limiting structure 40 on the second substrate 21, such as Fig. 9 shown.

[0081] Fig.10 for Figure 8 The CC cross-sectional view of the display panel in another embodiment is shown in FIG. Fig.10 As shown, the limiting structure 40 includes a plurality of support bars 41, and the plurality of support bars 41 are sequentially arranged in a direction away from the display area AA. Thus, in the area where the sealing frame structure 30 is located, the surface of the second substrate is a stepped surface, which can increase the bonding force between the sealing frame glue 31 and the surface of the second substrate.

[0082] Fig.11 for Figure 8 The CC cross-sectional view of the display panel in another embodiment is shown in FIG. Fig.11As shown, the second substrate further includes a color resist layer 23 located in the display area AA, and the color resist layer 23 is located between the second base 21 and the protective layer 24. The defining structure 40 can be located in the same layer as the color resist layer 23. That is, the defining structure 40 and the color resist layer 23 can be formed by a single mask process.

[0083] The color resist layer 23 may include a red color resist R, a green color resist G, and a blue color resist B. The defining structure 40 may be located in the same layer as one of the red color resist R, the green color resist G, and the blue color resist B. That is, the defining structure 40 may be formed in one mask process as well as one of the red color resist R, the green color resist G, and the blue color resist B. For example, the defining structure 40 and the blue color resist B are located in the same layer.

[0084] like Fig.11 As shown, a light shielding layer 22 may be formed on the side of the second substrate 21 facing the first substrate; a color resist layer 23 and a limiting structure 40 may be formed on the side of the light shielding layer 22 facing the first substrate, the color resist layer 23 is located in the display area AA, and the limiting structure 40 is located in the frame area BB. The limiting structure 40 is located between the light shielding layer 22 and the protective layer 24.

[0085] In another embodiment, a color resist layer 23 and a defining structure 40 may be formed on the side of the second substrate 21 facing the first substrate, the color resist layer 23 is located in the display area AA, and the defining structure 40 is located in the frame area BB. A light shielding layer 22 is formed on the side of the color resist layer 23 and the defining structure 40 facing the first substrate. In this structure, the defining structure 40 is located between the second substrate 21 and the light shielding layer 22.

[0086] Fig.12 for Figure 8 The CC cross-sectional view of the display panel in another embodiment is shown in FIG. Fig.12 As shown, the limiting structure 40 includes a plurality of support bars 41, and the plurality of support bars 41 are sequentially arranged in a direction away from the display area AA. Thus, in the area where the sealing frame structure 30 is located, the surface of the second substrate is a stepped surface, which can increase the bonding force between the sealing frame glue 31 and the surface of the second substrate.

[0087] Fig.13 for Figure 8 FIG. 4 is a schematic CC cross-sectional view of a display panel in another embodiment. In one embodiment, the defining structure 40 is convex, the defining structure 40 is located on the first substrate, and the defining structure 40 is located between the planar layer 13 and the passivation layer 15. Fig.13 shown.

[0088] Exemplarily, the limiting structure 40 and the flat layer 13 are located in the same layer, and the limiting structure 40 and the flat layer 13 are formed by a single mask process. For example, an organic material is coated on the side of the first substrate 11 facing the second substrate; a gray tone mask can be used to expose and develop the organic material layer to form the flat layer 13 and the limiting structure 40, and the limiting structure 40 is raised relative to the surface of the flat layer 13 toward the second substrate. In this way, the limiting structure 40 and the flat layer 13 can be formed by a single mask process, which will not increase the number of masking times of the first substrate and will not affect the cost of the first substrate.

[0089] The limiting structure 40 may be made of organic material.

[0090] It should be noted that the limiting structure 40 is not limited to being located in the same layer as the flat layer 13. In other embodiments, the limiting structure 40 and the flat layer 13 may be located in different layers. For example, the material of the limiting structure 40 may include an inorganic material or other materials, and the limiting structure 40 may be formed on the upper surface of the flat layer 13 after the flat layer 13 is formed.

[0091] It should be noted that Fig.13 In the embodiment, the limiting structure 40 is disposed between the flat layer 13 and the passivation layer 15, and the limiting structure 40 is disposed in the same layer as the flat layer 13. In other embodiments, in the process of forming the conductive film layer of the first substrate, corresponding supporting sub-film layers can be formed in the frame area BB respectively, and multiple supporting sub-film layers are superimposed to form the limiting structure 40. Alternatively, the limiting structure 40 can be formed on the surface of the passivation layer 15 facing the second substrate.

[0092] like Fig.13 As shown, the orthographic projection of the sealing frame structure 30 on the second substrate 21 is located within the orthographic projection of the limiting structure 40 on the first substrate 11 .

[0093] Fig.14 for Figure 8 FIG. 2 is a schematic CC cross-sectional view of a display panel in another embodiment. Fig.14 As shown, the limiting structure 40 includes a groove opened on the surface of the flat layer 13 on the side facing the passivation layer 15, and the orthographic projection of the sealing frame structure 30 on the first substrate 11 is located within the orthographic projection of the groove on the first substrate 11. Such a structure can increase the size of the spacer particles 32 in the sealing glue 31, so that the display panel can use spacer particles 32 of larger size, so as to share the same spacer particles 32 with display panels of other sizes.

[0094] For example, the maximum size of the spacer particles used in the 11.5-inch display panel is 4.8μm, and the size of this spacer particle is relatively large. In order to allow display panels of other sizes to use spacer particles of 4.8μm, the size of the groove in the display panel in the first direction can be set so that the display panel can use spacer particles of 4.8μm. Taking the 8.4-inch display panel as an example, the 8.4-inch display panel in the related technology uses spacer particles of 4.0μm. After adopting the technical solution of the present disclosure, a groove can be set in the second substrate, and the depth of the groove can be 0.8μm. Therefore, the 8.4-inch display panel adopting the technical solution of the embodiment of the present disclosure can use spacer particles of 4.8μm, and can share a type of spacer particles with the 11.5-inch display panel.

[0095] The first substrate may be an array substrate, and the second substrate may be a color filter substrate.

[0096] The first substrate may include a thin film transistor, such as Figure 3 As shown, the thin film transistor may include a gate electrode, an active layer, a source electrode and a drain electrode, and the first substrate may further include an insulating layer 12 , which may be disposed between the gate electrode and the active layer. The thin film transistor may be disposed between the first base 11 and the planar layer 13 . Figure 3 The thin film transistor shown in the figure is a bottom-gate thin film transistor. In other embodiments, the thin film transistor may be a top-gate thin film transistor.

[0097] like Figure 3 As shown, the first substrate may further include a first transparent electrode layer 14, a second transparent electrode layer 16, and a first alignment film 17. The first transparent electrode layer 14 may be located between the flat layer 13 and the passivation layer 15. The second transparent electrode layer 16 may be located on a side of the passivation layer 15 away from the first substrate 11, and the first alignment film 17 may be located on a side of the second transparent electrode layer 16 and the passivation layer 15 away from the first substrate 11. The first transparent electrode layer 14, the second transparent electrode layer 16, and the first alignment film 17 may be located in the display area AA. One of the first transparent electrode layer 14 and the second transparent electrode layer 16 may be a pixel electrode layer, and the other may be a common electrode layer.

[0098] like Figure 3As shown, the second substrate may further include a color resist layer 23, a spacer column 25, and a second alignment film 26. The light shielding layer 22 is located on the side of the second base 21 facing the first substrate, the color resist layer 23 is located on the side of the light shielding layer 22 facing the first substrate, and the color resist layer 23 is located in the display area AA. The color resist layer 23 may include red color resist, green color resist, and blue color resist, and the color resist layer 23 is located between adjacent sub-pixels. The protective layer 24 is located on the side of the light shielding layer 22 and the color resist layer 23 facing the first substrate, and the spacer column 25 is located on the side of the protective layer 24 facing the first substrate. The second alignment film 26 is located on the side of the protective layer 24 and the spacer column 25 facing the first substrate. The color resist layer 23, the spacer column 25, and the second alignment film 26 may all be located in the area enclosed by the sealing frame structure 30.

[0099] It should be noted that the light shielding layer 22 may include a black matrix located in the display area AA and a light shielding portion located outside the display area AA, and the black matrix is ​​located between adjacent sub-pixels.

[0100] The material of the first transparent electrode layer 14 and the second transparent electrode layer 16 may include a transparent conductive material, such as indium tin oxide (ITO) or indium tin oxide (IZO).

[0101] The material of the first alignment film 17 and the second alignment film 26 may include polyimide (PI).

[0102] In an exemplary embodiment, the insulating layer and the passivation layer may be any one or more of silicon oxide (SiOx), silicon nitride (SiNx) and silicon oxynitride (SiON), and may be a single layer, a multilayer or a composite layer. The gate electrode, the source electrode, the drain electrode, and the metal wiring may be made of metal materials, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti) and molybdenum (Mo), or alloy materials of the above metals, such as aluminum neodymium alloy (AlNd) or molybdenum niobium alloy (MoNb), and may be a single layer structure, or a multilayer composite structure, such as Ti / Al / Ti, etc.

[0103] The embodiment of the present disclosure further provides a display device, comprising the display panel in any embodiment of the present disclosure. The display device may be an LCD display device.

[0104] The display device may be any product or component with a display function, such as a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, or the like.

[0105] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0106] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0107] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0108] In the present disclosure, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0109] The disclosure above provides many different embodiments or examples to implement different structures of the present disclosure. In order to simplify the present disclosure, the components and settings of specific examples are described above. Of course, they are only examples, and the purpose is not to limit the present disclosure. In addition, the present disclosure can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed.

[0110] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A display panel, characterized in that: The display panel includes a display area and a frame area arranged around the display area, and the display panel includes: A first substrate, comprising a first base, and a flat layer and a passivation layer sequentially arranged on one side of the first base, wherein the flat layer and the passivation layer are both located in the display area and the frame area; a second substrate, arranged in a box with the first substrate, the second substrate comprising a second base, a light shielding layer and a protective layer, the light shielding layer is located on a side of the second base facing the first substrate, the protective layer is located on a side of the light shielding layer facing the first substrate, and the light shielding layer and the protective layer are both located in the display area and the frame area; A sealing frame structure, located between the first substrate and the second substrate, located in the frame area and surrounding the display area, the sealing frame structure comprising a sealing glue and spacer particles located in the sealing glue; A defining structure is located between the first substrate and the second substrate, the defining structure is located in the border area, the orthographic projection of the defining structure on the second substrate at least partially overlaps with the orthographic projection of the spacer particles on the second substrate, in a first direction, the size of the spacer particles is less than or equal to the size between the defining structure and an opposing substrate, the opposing substrate is the substrate of the first substrate and the second substrate that is opposite to the defining structure, and the first direction is a direction perpendicular to the second substrate.

2. The display panel according to claim 1, characterized in that: The limiting structure is convex and comprises a plurality of supporting bars, and the plurality of supporting bars are sequentially arranged at intervals in a direction away from the display area.

3. The display panel according to claim 1, characterized in that: The size of the limiting structure in the first direction ranges from 0.2 μm to 1 μm.

4. The display panel according to claim 1, characterized in that: The limiting structure is in a convex shape, and the limiting structure is located on the side of the protective layer facing the first substrate. There is an overlapping area between the orthographic projection of the limiting structure on the second substrate and the orthographic projection of the frame-sealing glue on the second substrate. The frame-sealing glue also includes a first edge area outside the overlapping area, and the first edge area is away from the display area relative to the overlapping area. The frame-sealing glue located in the first edge area is in contact with and connected to the surface of the protective layer.

5. The display panel according to claim 4, characterized in that: The second substrate further includes a spacer column located in the display area, the spacer column is located on a side of the protection layer facing the first substrate, and the limiting structure and the spacer column are located in the same layer.

6. The display panel according to claim 1, characterized in that: The limiting structure is in a convex shape and is located between the light shielding layer and the protective layer.

7. The display panel according to claim 6, characterized in that: The limiting structure and the light shielding layer are located on the same layer.

8. The display panel according to claim 1, characterized in that: The limiting structure is in a convex shape, the second substrate further includes a color resist layer located in the display area, the color resist layer is located between the second base and the protective layer, and the limiting structure and the color resist layer are located in the same layer.

9. The display panel according to claim 1, characterized in that: The limiting structure is in a convex shape, is located on the first substrate, and is located between the planar layer and the passivation layer.

10. The display panel according to claim 9, characterized in that: The limiting structure is located at the same layer as the planar layer.

11. The display panel according to any one of claims 6 to 10, characterized in that: The orthographic projection of the sealing frame structure on the second substrate is located within the orthographic projection of the limiting structure on the first substrate.

12. The display panel according to claim 1, characterized in that: The limiting structure includes a groove opened on the surface of the flat layer on a side facing the passivation layer, and the orthographic projection of the sealing frame structure on the first substrate is located within the orthographic projection of the groove on the first substrate.

13. A display device, characterized in that: A display panel comprising any one of claims 1-12.

Images