Display panel and manufacturing method thereof, and display device

Abstract

The present application provides a display panel and a manufacturing method thereof, and a display device, which relate to the field of display technology. The display panel includes an array substrate and a color film substrate that are arranged relatively to each other, and a first spacer, an alignment layer, and a first coating layer that are arranged between the array substrate and the color film substrate; the alignment layer includes a first alignment layer and a second alignment layer, the first alignment layer is located on the side of the array substrate facing the color film substrate, and the second alignment layer is located on the side of the color film substrate facing the array substrate; a first coating layer is arranged on the side of the first alignment layer facing the color film substrate, and the first spacer overlaps with the first coating layer along a first direction, and the first direction is the thickness direction of the display panel. By arranging the first coating layer, the display panel reduces the friction coefficient between the first spacer and the first alignment layer, thereby reducing the friction force, reducing the light leakage phenomenon caused by the phase difference caused by the large friction force, and thus improving the dark state display uniformity of the display panel.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and more specifically, to a display panel and a manufacturing method thereof, and a display device. Background Art

[0002] Thin film transistor liquid crystal display devices are increasingly widely used in various devices that require display due to their low power consumption, high definition, long life, small size, light weight and other characteristics.

[0003] In the prior art, the dark state uniformity of the liquid crystal display panel is poor, which is mainly caused by dark state light leakage. The main reason for dark state light leakage is that the display panel is subjected to external force. According to the photoelasticity theory, even if glass is an isotropic material, it will also become anisotropic under the action of external force, that is, the refractive index is different under different forces, and the refractive index of a certain point of the photoelastic material is directly related to the stress state of the point. In the liquid crystal display panel, when subjected to external force, the glass will deform, and the friction between the spacer column and the alignment layer will increase. The stress is mainly caused by the friction between the spacer column and the array substrate. The increase in friction will cause an increase in stress, which will cause the glass to double refraction, produce a large phase difference, and produce optical delay, which will cause the display panel to leak light in the dark state, and also affect the dark state uniformity of the display panel. Summary of the invention

[0004] In view of this, the present invention provides a display panel and a manufacturing method thereof, and a display device, so as to improve the phenomenon of light leakage and poor dark state uniformity of the display panel.

[0005] In a first aspect, the present application provides a display panel, comprising an array substrate and a color filter substrate arranged opposite to each other, and a first spacer, an alignment layer and a first coating layer arranged between the array substrate and the color filter substrate;

[0006] The alignment layer comprises a first alignment layer and a second alignment layer, the first alignment layer is located on a side of the array substrate facing the color filter substrate, and the second alignment layer is located on a side of the color filter substrate facing the array substrate;

[0007] A first coating layer is disposed on a side of the first alignment layer facing the color filter substrate. The first spacers overlap with the first coating layer along a first direction. The first direction is a thickness direction of the display panel.

[0008] In a second aspect, based on the same inventive concept, the present application also provides a method for manufacturing a display panel, comprising: providing an array substrate and a color filter substrate, wherein the array substrate and the color filter substrate are arranged opposite to each other;

[0009] Spraying an alignment liquid on a side of the array substrate facing the color filter substrate to form a first alignment layer, and spraying an alignment liquid on a side of the color filter substrate facing the array substrate to form a second alignment layer;

[0010] First spacer columns are evenly distributed on a side of the color filter substrate close to the array substrate, and the first spacer columns are connected to the color filter substrate;

[0011] A first coating layer is formed by low-temperature distillation, and the first coating layer is located on a side of the first alignment layer facing the color filter substrate.

[0012] In a third aspect, based on the same inventive concept, the present application also provides a display device, which includes the display panel in the first aspect.

[0013] Compared with the prior art, the display panel and its manufacturing method and display device provided by the present invention achieve at least the following beneficial effects:

[0014] The display panel provided by the present application includes an array substrate and a color film substrate arranged opposite to each other, and a first spacer, an alignment layer and a first coating layer arranged between the array substrate and the color film substrate; the alignment layer includes a first alignment layer and a second alignment layer, the first alignment layer is located on the side of the array substrate facing the color film substrate, and the second alignment layer is located on the side of the color film substrate facing the array substrate; a first coating layer is arranged on the side of the first alignment layer facing the color film substrate, and the first spacer overlaps with the first coating layer along a first direction, and the first direction is the thickness direction of the display panel. By arranging the first coating layer, the display panel reduces the friction coefficient between the first spacer and the first alignment layer, thereby reducing the friction force, reducing the light leakage phenomenon caused by the phase difference caused by the large friction force, and thus improving the dark state display uniformity of the display panel.

[0015] Of course, any product implementing the present invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0016] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0018] Figure 1 Shown is a top view of a display panel provided in an embodiment of the present application;

[0019] Figure 2 Shown Figure 1 A schematic cross-sectional view along BB';

[0020] Figure 3 Shown Figure 1 A schematic cross-sectional view of the middle section along CC';

[0021] Figure 4 Shown Figure 1 Another cross-sectional diagram along CC';

[0022] Figure 5 Shown Figure 1 Another cross-sectional schematic diagram along CC';

[0023] Figure 6 Shown Figure 1 Another schematic cross-sectional view along CC';

[0024] Figure 7 Shown Figure 1 Another schematic cross-sectional view along CC';

[0025] Figure 8 Shown Figure 1 Another cross-sectional schematic diagram along BB';

[0026] Fig. 9 Shown Figure 1 Another cross-sectional schematic diagram along the middle line BB';

[0027] Fig.10 Shown Figure 1 Another cross-sectional schematic diagram along the middle line BB';

[0028] Fig.11 Shown Figure 1 Another cross-sectional schematic diagram along the middle line BB';

[0029] Fig.12 Shown Figure 1 Another schematic cross-sectional view along CC';

[0030] Fig.13 Shown Figure 1 Another schematic cross-sectional view along CC';

[0031] Fig.14 Shown Figure 1 Another schematic cross-sectional view along CC';

[0032] Fig.15 Shown Figure 1 Another schematic cross-sectional view along CC';

[0033] Fig.16 Shown Figure 1 Another schematic cross-sectional view along CC';

[0034] Fig.17Shown Figure 1 Another cross-sectional schematic diagram along the middle line BB';

[0035] Fig.18 Shown Figure 1 Another cross-sectional schematic diagram along the middle line BB';

[0036] Fig.19 Shown Figure 1 Another cross-sectional schematic diagram along the middle line BB';

[0037] Fig. 20 Shown Figure 1 Another cross-sectional schematic diagram along the middle line BB';

[0038] Fig.21 The figure shows a method for manufacturing a display panel provided in an embodiment of the present application;

[0039] Fig. 22 Shown is a structural diagram of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0040] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0041] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0042] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0043] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0044] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0045] Thin film transistor liquid crystal display devices are increasingly widely used in various devices that require display due to their low power consumption, high definition, long life, small size, light weight and other characteristics.

[0046] In the prior art, the display panel includes an array substrate, a color film substrate, and an alignment layer and spacer columns located between the array substrate and the color film substrate. When the display panel is subjected to external force, the glass will deform, and the friction between the spacer columns and the alignment layer will increase, thereby generating a large phase difference and optical delay, which will cause light leakage in the display panel in the dark state and also affect the dark state uniformity of the display panel.

[0047] In view of this, the present invention provides a display panel and a manufacturing method thereof, and a display device, so as to improve the phenomenon of light leakage and poor dark state uniformity of the display panel.

[0048] Figure 1 FIG. 1 is a top view of a display panel provided in an embodiment of the present application. Figure 2 Shown Figure 1 A cross-sectional diagram along BB'; please refer to Figure 1 and Figure 2 The embodiment of the present application provides a display panel 100, comprising an array substrate 10 and a color filter substrate 20 arranged opposite to each other, and a first spacer 41, an alignment layer and a first coating layer 50 arranged between the array substrate 10 and the color filter substrate 20;

[0049] The alignment layer includes a first alignment layer 31 and a second alignment layer 32 . The first alignment layer 31 is located on a side of the array substrate 10 facing the color filter substrate 20 , and the second alignment layer 32 is located on a side of the color filter substrate 20 facing the array substrate 10 .

[0050] A first coating layer 50 is disposed on a side of the first alignment layer 31 facing the color filter substrate 20 . The first spacers 41 overlap with the first coating layer 50 along a first direction. The first direction is a thickness direction of the display panel 100 .

[0051] Specifically, the present application provides a display panel 100, including an array substrate 10 and a color film substrate 20, and an alignment layer, a first spacer 41 and a first coating 50 between the array substrate 10 and the color film substrate 20; a first alignment layer 31 and a second alignment layer 32 are respectively arranged on the side where the array substrate 10 and the color film substrate 20 are close to each other, and the alignment layer is used to make the liquid crystal molecules uniformly arranged in a certain order. Optionally, the first alignment layer 31 is located on the side of the array substrate 10, and the second alignment layer 32 is located on the side of the color film substrate 20; a first spacer 41 is also included between the array substrate 10 and the color film substrate 20, and the first spacer 41 plays a static supporting role to ensure that there is a certain spacing distance between the array substrate 10 and the color film substrate 20; the first coating 50 is adjacent to the first alignment layer 31, and is located on the side of the first alignment layer 31 close to the color film substrate 20, and along the first direction, the first coating 50 overlaps with the first spacer 41. The area where the first coating 50 and the first spacer 41 are in contact is a high-incidence area for friction. Therefore, arranging the first coating 50 to overlap with the first spacer 41 can reduce the friction coefficient between the first alignment layer 31 and the first spacer 41, thereby reducing the friction force between the first alignment layer 31 and the first spacer 41, reducing the light leakage phenomenon caused by the phase difference caused by the large friction force, and thereby improving the dark state display uniformity of the display panel 100.

[0052] It is understood that the first coating 50 is made of an anti-fingerprint material, the main component of which includes at least one of perfluoropolyether and fluorine oil, wherein the effective group is a CF organic chain, that is, an ether chain with a structure of -CF2-O-CF2, and the first coating 50 has excellent friction resistance and a low friction coefficient. The calculation formula of the phase difference is:

[0053] R=S*t*Δσ,

[0054] Where R represents the phase difference, S represents the photoelastic coefficient of the glass, and Δσ represents the friction force. The calculation formula for the friction force is:

[0055]

[0056] Wherein, Δσ represents friction force, μ represents the friction coefficient between the spacer and the alignment layer, N represents the contact area between the spacer and the alignment layer, ΔL / L refers to the compression rate of the spacer, and K is the elastic coefficient of the spacer material. Since the first coating 50 has a lower friction coefficient, the friction force is reduced, and the light leakage phenomenon caused by the phase difference caused by the larger friction force is reduced, thereby improving the dark state display uniformity of the display panel 100.

[0057] Figure 3 Shown Figure 1 A cross-sectional diagram of the center line CC', please refer to Figure 3Optionally, the display panel 100 includes a display area AA and a frame area NA disposed at the periphery of the display area AA, and the first coating layer 50 is at least located in the frame area NA.

[0058] Specifically, the border area NA of the display panel 100 is a high-incidence area of ​​light leakage, so the first coating 50 is set at least in the border area NA. Since the first coating 50 has a lower friction coefficient, the friction between the first alignment layer 31 and the first spacer column 41 in the border area NA can be reduced, thereby reducing the light leakage caused by the phase difference caused by the large friction, thereby improving the dark state display uniformity of the display panel 100.

[0059] Figure 4 Shown Figure 1 Another cross-sectional diagram along CC', Figure 5 Shown Figure 1 Another cross-sectional diagram of the center line CC', please refer to Figure 4 and Figure 5 Optionally, the first coating layer 50 is at least located in the display area AA, and the first coating layer 50 covers the entire display area AA.

[0060] For details, please continue to refer to Figure 4 The present application provides an optional implementation scheme, in which a first coating layer 50 is disposed in the display area AA, and the first coating layer 50 is in a planar shape, that is, the first coating layer 50 covers the entire display area AA. In the display area AA, a first coating layer 50 is disposed on a side of the first alignment layer 31 close to the first spacer 41. Since the first coating layer 50 has a lower friction coefficient and is disposed entirely in the display area AA, the friction coefficient between the film layer where the first spacer 41 is located and the first alignment layer 31 in the display area is reduced, thereby further reducing the friction force, reducing the light leakage phenomenon caused by the phase difference caused by the large friction force, and thereby improving the dark state display uniformity of the display panel 100.

[0061] Please refer to Figure 5 The present application provides another optional implementation manner in which the first coating 50 is configured as a planar structure and is located in the display area AA and the frame area NA configured around the display area AA, that is, the first coating 50 covers the display area AA and the frame area NA. This configuration reduces the friction coefficient between the film layer where the first spacer 41 is located and the first alignment layer 31 in the display area AA and the frame area NA, further reduces the friction force, reduces the light leakage phenomenon caused by the phase difference caused by the large friction force in the box, and thereby improves the dark state display uniformity of the display panel 100.

[0062] Figure 6 Shown Figure 1 Another cross-sectional diagram of the center line CC', please refer to Figure 6Optionally, the first coating 50 is at least located in the display area AA, and includes a plurality of first sub-coating units 51. Along the first direction, the projection of the first sub-coating unit 51 onto the plane where the array substrate 10 is located at least overlaps with the projection of the first spacer column 41 onto the plane where the array substrate 10 is located.

[0063] Specifically, the first coating layer 50 includes a plurality of first sub-coating units 51, and is at least located in the display area AA. The first sub-coating unit 51 is arranged between the first spacer 41 and the first alignment layer 31, and the projection of the first sub-coating unit 51 to the plane where the array substrate 10 is located at least overlaps with the projection of the first spacer 41 to the plane where the array substrate 10 is located. The friction between the first spacer 41 and the first alignment layer 31 is the main source of friction. The first sub-coating unit 51 is arranged on the side of the first alignment layer 31 close to the first spacer 41, which can reduce the friction between the first alignment layer 31 and the first spacer 41. At the same time, compared with the first coating layer 50 being arranged on the entire surface, the first sub-coating unit 51 is arranged only at the corresponding position of part of the first spacer 41, which can reduce the use of the material of the first coating layer 50 and reduce the manufacturing cost. While reducing the light leakage phenomenon caused by friction, the manufacturing cost is also reduced.

[0064] Figure 7 Shown Figure 1 Another cross-sectional diagram of the center line CC', please refer to Figure 7 Optionally, the first sub-coating units 51 correspond to the first spacer columns 41 one by one.

[0065] Specifically, the present application provides an optional implementation scheme in which a first sub-coating unit 51 is correspondingly arranged for each first spacer column 41. Such a configuration can reduce the friction between each first spacer column 41 and the first alignment layer 31, further improve the light leakage phenomenon caused by the phase difference of the display panel 100 due to the large friction, and improve the dark state uniformity of the display panel 100.

[0066] Figure 8 Shown Figure 1 For another cross-sectional diagram along the middle line BB', please refer to Figure 8 Optionally, the display panel 100 further includes a second spacer column 42, which is connected to the color filter substrate 20, located between the array substrate 10 and the color filter substrate 20, and arranged in the same layer as the first spacer column 41. The height of the second spacer column 42 along the first direction is less than that of the first spacer column 41.

[0067] Specifically, the display panel 100 provided in the present application includes an array substrate 10 and a color film substrate 20 that are relatively arranged. A certain spacing distance needs to be maintained between the array substrate 10 and the color film substrate 20, so a first spacing column 41 is arranged to play a static supporting role. When the display panel 100 is subjected to pressure, a certain distance still needs to be maintained between the array substrate 10 and the color film substrate 20, so a second spacing column 42 is arranged. The height of the second spacing column 42 along the first direction is smaller than the first spacing column 41, and plays a supporting role when the display panel 100 is subjected to pressure.

[0068] Fig. 9 Shown Figure 1 Another cross-sectional diagram along the middle line BB', please refer to Fig. 9 Optionally, the first coating layer 50 includes a plurality of second sub-coating units 52 , and along the first direction, the projection of the second sub-coating unit 52 onto the plane where the array substrate 10 is located at least overlaps with the projection of the second spacer column 42 onto the plane where the array substrate 10 is located.

[0069] Specifically, when the display panel 100 is subjected to pressure, the second spacer 42 plays a supporting role between the array substrate 10 and the color film substrate 20, so friction is generated between the second spacer 42 and the first alignment layer 31. In order to reduce this friction, a second sub-coating unit 52 is arranged on the side of the first alignment layer 31 close to the second spacer 42, and the projection of the second sub-coating unit 52 to the plane where the array substrate 10 is located at least overlaps with the projection of the second spacer 42 to the plane where the array substrate 10 is located, that is, the second sub-coating unit 52 is arranged at least at the corresponding position of part of the second spacer 42. The friction coefficient of the second sub-coating unit 52 is small, so the friction between the first alignment layer 31 and the second spacer 42 is also small, thereby improving the phenomenon of light leakage caused by friction of the second spacer 42, and improving the dark state uniformity of the display panel 100.

[0070] Fig.10 Shown Figure 1 Another cross-sectional diagram along the middle line BB', please refer to Fig.10 Optionally, the second sub-coating units 52 correspond to the second spacer columns 42 one by one.

[0071] Specifically, the present application provides an optional implementation scheme in which a second sub-coating unit 52 is correspondingly arranged for each second spacer column 42. Such a configuration can reduce the friction between each second spacer column 42 and the first alignment layer 31, further reduce the light leakage phenomenon of the display panel 100 due to the large friction, and improve the dark state uniformity of the display panel 100.

[0072] Fig.11 Shown Figure 1 Another cross-sectional diagram along the middle line BB', please refer to Fig.11 Optionally, the display panel 100 further includes a second coating layer 60 , which is located on a side of the film layer where the first spacer 41 is located facing the array substrate 10 , and along the first direction, the first spacer 41 overlaps with the second coating layer 60 .

[0073] Specifically, in order to further reduce the friction between the first spacer 41 and the first alignment layer 31, the display panel 100 provided in the present application further includes a second coating layer 60, which is adjacent to the film layer where the first spacer 41 is located and is located on the side of the film layer where the first spacer 41 is located facing the array substrate 10. The present application provides an optional implementation in which the first spacer 41 overlaps the second coating layer 60.

[0074] It should be noted that the second coating 60 and the first coating 50 are made of the same material and also have a low friction coefficient, thereby reducing the friction between the first spacer 41 and the first alignment layer 31, thereby reducing the light leakage of the display panel 100 due to the large friction, and improving the dark state uniformity of the display panel 100.

[0075] Fig.12 Shown Figure 1 Another cross-sectional diagram of the center line CC', please refer to Fig.12 Optionally, the display panel 100 includes a display area AA and a frame area NA disposed at the periphery of the display area AA, and the second coating layer 60 is at least located in the frame area NA.

[0076] Specifically, the border area NA of the display panel 100 is a high-incidence area of ​​light leakage, so the second coating 60 is set at least in the border area NA. Since the first coating 50 and the second coating 60 are made of the same material and have a low friction coefficient, the friction between the first spacer column 41 and the first alignment layer 31 can be reduced, and the light leakage caused by the phase difference due to the large friction can be reduced, thereby improving the dark state display uniformity of the display panel 100.

[0077] Fig.13 Shown Figure 1 Another cross-sectional schematic diagram along CC', Fig.14 Shown Figure 1 Another cross-sectional diagram of the center line CC', please refer to Fig.13 and Fig.14 Optionally, the second coating layer 60 is at least located in the display area AA, and the second coating layer 60 covers the entire display area AA.

[0078] Specifically, please refer to Fig.13The present application provides an optional implementation scheme, in which a second coating layer 60 is disposed in the display area AA, and the second coating layer 60 is in a planar shape, that is, the second coating layer 60 covers the entire display area AA. In the display area AA, a whole surface of the second coating layer 60 is disposed on the side of the film layer where the first spacer column 41 is located close to the first alignment layer 31. Since the second coating layer 60 has a lower friction coefficient and is entirely disposed in the display area AA, the friction coefficient between the film layer where the first spacer column 41 is located and the first alignment layer 31 is reduced, thereby further reducing the friction force inside the box, reducing the light leakage phenomenon caused by the phase difference caused by the large friction force inside the box, and thereby improving the dark state display uniformity of the display panel 100.

[0079] Please refer to Fig.14 The present application provides another optional implementation manner in which the second coating 60 is configured as a planar structure and is located in the display area AA and the frame area NA configured around the display area AA, that is, the second coating 60 covers the display area AA and the frame area NA. This configuration reduces the friction coefficient between the film layer where the first spacer 41 is located and the first alignment layer 31 in the display area AA and the frame area NA, further reduces the friction force inside the box, reduces the light leakage phenomenon caused by the phase difference caused by the large friction force inside the box, and thereby improves the dark state display uniformity of the display panel 100.

[0080] Fig.15 Shown Figure 1 Another cross-sectional diagram of the center line CC', please refer to Fig.15 Optionally, the second coating 60 is at least located in the display area AA, and includes a plurality of third sub-coating units 61. Along the first direction, the projection of the third sub-coating unit 61 onto the plane where the array substrate 10 is located at least overlaps with the projection of the first spacer column 41 onto the plane where the array substrate 10 is located.

[0081] Specifically, the second coating layer 60 includes a plurality of third sub-coating units 61, and is at least located in the display area AA. The third sub-coating unit 61 is arranged between the first spacer 41 and the first alignment layer 31, and the projection of the third sub-coating unit 61 to the plane where the array substrate 10 is located at least overlaps with the projection of the first spacer 41 to the plane where the array substrate 10 is located. The friction between the first spacer 41 and the first alignment layer 31 is the main source of the friction force in the box. The third sub-coating unit 61 is arranged on the side of the film layer where the first spacer 41 is located close to the first alignment layer 31, which can further reduce the friction between the first alignment layer 31 and the first spacer 41. At the same time, compared with the second coating layer 60 being arranged on the entire surface, the third sub-coating unit 61 is arranged only at the corresponding position of part of the first spacer 41, which can reduce the use of the material of the first coating layer 50 and reduce the manufacturing cost. While reducing the light leakage phenomenon caused by friction, the manufacturing cost is also reduced.

[0082] It should be noted that the second coating layer can also be coated on the outer surface of the first spacer. In this way, the friction between the first spacer and the first alignment layer will be smaller, which can better improve the light leakage caused by friction, thereby improving the dark state display uniformity of the display panel. Similarly, the second coating layer can also be coated on the outer surface of the second spacer, thereby reducing the friction between the second spacer and the first alignment layer.

[0083] Fig.16 Shown Figure 1 Another cross-sectional diagram of the center line CC', please refer to Fig.16 Optionally, the third sub-coating unit 61 corresponds to the first spacer column 41 one by one.

[0084] Specifically, the present application provides an optional implementation scheme in which a third sub-coating unit 61 is correspondingly arranged for each first spacer column 41. Such a configuration can further reduce the friction between each first spacer column 41 and the first alignment layer 31, thereby better improving the light leakage phenomenon of the display panel 100 caused by the large friction, and improving the dark state uniformity of the display panel 100.

[0085] Fig.17 Shown Figure 1 Another cross-sectional diagram along the middle line BB', please refer to Fig.17 Optionally, the display panel 100 further includes a second spacer column 42, which is connected to the color filter substrate 20, located between the array substrate 10 and the color filter substrate 20, and arranged in the same layer as the first spacer column 41. The height of the second spacer column 42 along the first direction is less than that of the first spacer column 41.

[0086] Specifically, the present application provides an optional implementation manner, the display panel 100 includes an array substrate 10 and a color film substrate 20 arranged opposite to each other, a first alignment layer 31 is arranged on a side of the array substrate 10 close to the color film substrate 20, and a second alignment layer 32 is arranged on a side of the color film substrate 20 close to the array substrate 10; a first spacer column 41 and a second spacer column 42 are arranged between the first alignment layer 31 and the second alignment layer 32, the first spacer column 41 and the second spacer column 42 are both connected to the color film substrate 20, and the height of the second spacer column 42 along the first direction is smaller than the first spacer column 41; a first coating 50 is arranged on a side of the first alignment layer 31 close to the first spacer column 41, and a second coating 60 is arranged on a side of the first spacer column 41 close to the first alignment layer 31. Since the first coating 50 and the second coating 60 have a lower friction coefficient, the friction between the first alignment layer 31 and the first spacer column 41 is reduced, thereby improving the phenomenon of light leakage caused by friction of the second spacer column 42, and improving the dark state uniformity of the display panel 100.

[0087] Fig.18 Shown Figure 1 Another cross-sectional diagram along the middle line BB', please refer to Fig.18 Optionally, the second coating layer 60 includes a plurality of fourth sub-coating units 62 , and along the first direction, the projection of the fourth sub-coating unit 62 onto the plane where the array substrate 10 is located at least overlaps with the projection of the second spacer column 42 onto the plane where the array substrate 10 is located.

[0088] Specifically, in order to further reduce the friction force generated between the second spacer column 42 and the first alignment layer 31, a fourth sub-coating unit 62 is arranged on the side of the second spacer column 42 close to the first alignment layer 31, and the projection of the fourth sub-coating unit 62 to the plane where the array substrate 10 is located at least overlaps with the projection of the second spacer column 42 to the plane where the array substrate 10 is located. The friction coefficient of the fourth sub-coating unit 62 is small, so the friction force between the first alignment layer 31 and the second spacer column 42 is further reduced, thereby improving the phenomenon of light leakage caused by friction between the second spacer column 42 and the first alignment layer 31, and improving the dark state uniformity of the display panel 100.

[0089] Fig.19 Shown Figure 1 Another cross-sectional diagram along the middle line BB', please refer to Fig.19 Optionally, the fourth sub-coating unit 62 corresponds to the second spacer column 42 one by one.

[0090] Specifically, the present application provides an optional implementation scheme in which a fourth sub-coating unit 62 is correspondingly arranged for each second spacer column 42. Such a configuration can further reduce the friction between each second spacer column 42 and the first alignment layer 31, thereby reducing the light leakage phenomenon of the display panel 100 caused by the large friction, and better improving the dark state uniformity of the display panel 100.

[0091] Fig. 20 Shown Figure 1 Another cross-sectional diagram along the middle line BB', please refer to Fig. 20 Optionally, the thickness of the first coating 50 and the second coating 60 along the first direction is D, 5nm≤D≤10nm.

[0092] Specifically, when the thickness D of the first coating 50 and the second coating 60 along the first direction is less than 5nm, the thickness of the first coating 50 and the second coating 60 is relatively thin, and the first spacer column 41 and the second spacer column 42 will still generate a large friction force with the first alignment layer 31; when the thickness D of the first coating 50 and the second coating 60 along the first direction is greater than 10nm, the thickness of the first coating 50 and the second coating 60 is relatively thick, which may affect the flatness and step difference in the liquid crystal box; therefore, setting the thickness of the first coating 50 and the second coating 60 along the first direction to 5nm≤D≤10nm can not only reduce the friction force and improve the light leakage phenomenon of the display panel 100, but also will not affect the flatness and step difference in the liquid crystal box.

[0093] Please continue to refer to Fig. 20 The present application provides an optional implementation mode, in which the first coating layer 50 is arranged on a side of the first alignment layer 31 close to the color filter substrate 20, the first coating layer 50 includes a first coating layer 50 unit and a second coating layer 60 unit, the first coating layer 50 unit corresponds to the first spacer 41 one-to-one, and the second coating layer 60 unit corresponds to the second spacer 42 one-to-one; the second coating layer 60 is arranged on a side of the film layer where the first spacer 41 is located close to the array substrate 10, the second coating layer 60 includes a third coating layer unit and a fourth coating layer unit, the third coating layer unit corresponds to the first spacer 41 one-to-one, and the fourth coating layer unit corresponds to the second spacer 42 one-to-one, that is, the first spacer 41 is correspondingly provided with the first coating layer 50 and the second coating layer 60, and the second spacer 42 is correspondingly provided with the first coating layer 50 and the second coating layer 60. Since the friction coefficient of the first coating layer 50 and the second coating layer 60 is small, the friction between the first alignment layer 31 and the first spacer 41 and the second spacer 42 is reduced, thereby reducing the light leakage phenomenon of the display panel 100 caused by the large friction, and better improving the dark state uniformity of the display panel 100.

[0094] Based on the same inventive concept, the present application provides a method for manufacturing a display panel, which is used to manufacture the display panel 100 provided in an embodiment of the present application. Fig.21 The method for manufacturing the display panel provided in the embodiment of the present application is shown in FIG. Fig.21 ,include:

[0095] S01, providing an array substrate 10 and a color filter substrate 20, wherein the array substrate 10 and the color filter substrate 20 are arranged opposite to each other;

[0096] S02, spraying an alignment liquid on the side of the array substrate 10 facing the color filter substrate 20 to form a first alignment layer 31, and spraying an alignment liquid on the side of the color filter substrate 20 facing the array substrate 10 to form a second alignment layer 32;

[0097] S03, evenly distributing first spacer columns 41 on a side of the color filter substrate 20 close to the array substrate 10, wherein the first spacer columns 41 are connected to the color filter substrate 20;

[0098] S04, forming a first coating layer 50 by low temperature distillation film forming, the first coating layer 50 is located on the side of the first alignment layer 31 facing the color filter substrate 20. That is, a mask is set on the side of the first alignment layer 31 facing the color filter substrate 20, and the first coating layer 50 is formed on the side of the first alignment layer 31 facing the color filter substrate 20 by low temperature distillation film forming.

[0099] It should be noted that the display panel 100 manufactured using this method forms the first coating layer 50 by low-temperature distillation film formation, and the first coating layer 50 has a low friction coefficient, which reduces the friction between the first alignment layer 31 and the first spacer 41, thereby reducing the light leakage phenomenon of the display panel 100 due to the large friction, and better improves the dark state uniformity of the display panel 100. At the same time, the low-temperature distillation film formation method will not affect the film layers of the color filter substrate 20 and the array substrate 10.

[0100] Optionally, refer to Figure 8 and Fig.17 The manufacturing method of the display panel provided in the embodiment of the present invention also includes: uniformly distributing second spacer columns 42 on the side of the color filter substrate 20 close to the array substrate 10, the second spacer columns 42 are connected to the color filter substrate 20, and are arranged in the same layer as the first spacer columns 41, in the first direction, the height of the second spacer columns 42 is less than the height of the first spacer columns 41, and the first direction is the thickness direction of the display panel 100.

[0101] Specifically, the present application provides an optional implementation scheme in which a first spacer column 41 is evenly distributed on a side of the color film substrate 20 close to the array substrate 10, and a second spacer column 42 is simultaneously provided. The second spacer column 42 and the first spacer column 41 are both connected to the color film substrate 20 and provided in the same film layer. The height of the second spacer column 42 along the first direction is less than the height of the first spacer column 41.

[0102] Optionally, refer to Figure 11-Figure 20 The manufacturing method of the display panel provided in the embodiment of the present invention further includes: forming a second coating layer 60 by low-temperature distillation, wherein the second coating layer 60 is located on a side of the film layer where the first spacer 41 is located facing the array substrate 10 .

[0103] Specifically, the display panel 100 further includes a second coating layer 60. The manufacturing method of the second coating layer 60 is the same as that of the first coating layer 50, and is also formed by low-temperature distillation film-forming, that is, a mask is set on the side of the film layer where the first spacer 41 is located facing the array substrate 10, and the second coating layer 60 is formed on the side of the film layer where the first spacer 41 is located facing the array substrate 10 by low-temperature distillation film-forming. The second coating layer 60 has a lower friction coefficient, which reduces the friction between the first alignment layer 31 and the first spacer 41, thereby reducing the light leakage phenomenon of the display panel 100 caused by the large friction force, and better improving the dark state uniformity of the display panel 100. At the same time, the low-temperature distillation film-forming method will not affect the film layers of the color filter substrate 20 and the array substrate 10.

[0104] Based on the same inventive concept, the present application also provides a display device, Fig. 22 FIG. 1 is a structural diagram of a display device provided in an embodiment of the present application. Please refer to FIG. Fig. 22 , the display device includes a display panel 100, and the display panel 100 is the display panel provided in the above embodiment of the present application. It should be noted that the embodiment of the display device 200 provided in the embodiment of the present application can refer to the embodiment of the above display panel, and the repeated parts will not be repeated. The display device 200 provided in the present application can be: a mobile phone, a tablet computer, a television, a monitor, a laptop computer, a digital photo frame, a navigator, and any other product or component with realistic functions.

[0105] It can be seen from the above embodiments that the display panel and the manufacturing method thereof, and the display device provided by the present invention achieve at least the following beneficial effects:

[0106] The present application provides a display panel including an array substrate and a color film substrate arranged opposite to each other, and a first spacer, an alignment layer and a first coating layer arranged between the array substrate and the color film substrate; the alignment layer includes a first alignment layer and a second alignment layer, the first alignment layer is located on a side of the array substrate facing the color film substrate, and the second alignment layer is located on a side of the color film substrate facing the array substrate; a first coating layer is arranged on a side of the first alignment layer facing the color film substrate, and the first spacer overlaps with the first coating layer along a first direction, and the first direction is the thickness direction of the display panel. By arranging the first coating layer, the display panel reduces the friction coefficient between the first spacer and the alignment layer, thereby reducing the friction force inside the box, reducing the light leakage phenomenon caused by the phase difference caused by the large friction force inside the box, and thus improving the dark state display uniformity of the display panel.

[0107] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A display panel, characterized in that: It comprises an array substrate and a color filter substrate which are arranged opposite to each other, and a first spacer, an alignment layer and a first coating layer which are arranged between the array substrate and the color filter substrate; The alignment layer comprises a first alignment layer and a second alignment layer, the first alignment layer is located on a side of the array substrate facing the color filter substrate, and the second alignment layer is located on a side of the color filter substrate facing the array substrate; A first coating is provided on the side of the first alignment layer facing the color film substrate, and the first coating comprises at least one of perfluoropolyether and fluoro oil; along a first direction, the first spacer overlaps with the first coating, and the first direction is the thickness direction of the display panel.

2. The display panel according to claim 1, characterized in that: The display panel includes a display area and a frame area arranged outside the display area, and the first coating is at least located in the frame area.

3. The display panel according to claim 2, characterized in that: The first coating layer is at least located in the display area, and the first coating layer covers the entire display area.

4. The display panel according to claim 2, characterized in that: The first coating layer is at least located in the display area and includes a plurality of first sub-coating units. Along the first direction, the projection of the first sub-coating units onto the plane where the array substrate is located at least overlaps with the projection of the first spacer onto the plane where the array substrate is located.

5. The display panel according to claim 4, characterized in that: The first sub-coating units correspond to the first spacer columns one by one.

6. The display panel according to claim 1, characterized in that: The display panel further includes a second spacer column, which is connected to the color filter substrate, located between the array substrate and the color filter substrate, and arranged in the same layer as the first spacer column. The height of the second spacer column along the first direction is smaller than that of the first spacer column.

7. The display panel according to claim 6, characterized in that: The first coating layer includes a plurality of second sub-coating units. Along the first direction, projections of the second sub-coating units onto the plane where the array substrate is located at least overlap with projections of the second spacers onto the plane where the array substrate is located.

8. The display panel according to claim 7, characterized in that: The second sub-coating units correspond to the second spacer columns one by one.

9. The display panel according to claim 1, characterized in that: The display panel further includes a second coating layer, which is located on a side of the film layer where the first spacer is located and faces the array substrate. Along a first direction, the first spacer overlaps with the second coating layer.

10. The display panel according to claim 9, characterized in that: The display panel includes a display area and a frame area arranged outside the display area, and the second coating is at least located in the frame area.

11. The display panel according to claim 10, characterized in that: The second coating layer is at least located in the display area, and the second coating layer covers the entire display area.

12. The display panel according to claim 10, characterized in that: The second coating layer is at least located in the display area and includes a plurality of third sub-coating units. Along the first direction, the projection of the third sub-coating units onto the plane where the array substrate is located at least overlaps with the projection of the first spacer onto the plane where the array substrate is located.

13. The display panel according to claim 12, characterized in that: The third sub-coating units correspond to the first spacer columns one by one.

14. The display panel according to claim 9, characterized in that: The display panel further includes a second spacer column, which is connected to the color filter substrate, located between the array substrate and the color filter substrate, and arranged in the same layer as the first spacer column. The height of the second spacer column along the first direction is smaller than that of the first spacer column.

15. The display panel according to claim 14, characterized in that: The second coating layer includes a plurality of fourth sub-coating units. Along the first direction, projections of the fourth sub-coating units onto the plane where the array substrate is located at least overlap with projections of the second spacers onto the plane where the array substrate is located.

16. The display panel according to claim 15, characterized in that: The fourth sub-coating units correspond to the second spacer columns one by one.

17. The display panel according to claim 9, characterized in that: The thickness of the first coating layer and the second coating layer along the first direction is D, 5nm≤D≤10nm.

18. The display panel according to claim 9, characterized in that: The second coating layer comprises at least one of perfluoropolyether and fluorine oil.

19. A method for manufacturing a display panel, characterized in that: include: Providing an array substrate and a color filter substrate, wherein the array substrate and the color filter substrate are arranged opposite to each other; Spraying an alignment liquid on a side of the array substrate facing the color filter substrate to form a first alignment layer, and spraying an alignment liquid on a side of the color filter substrate facing the array substrate to form a second alignment layer; First spacer columns are evenly distributed on a side of the color filter substrate close to the array substrate, and the first spacer columns are connected to the color filter substrate; The first coating layer is formed by low-temperature distillation, and the first coating layer is located on the side of the first alignment layer facing the color filter substrate; the first coating layer comprises at least one of perfluoropolyether and fluoro oil.

20. The method for manufacturing a display panel according to claim 19, characterized in that: Also includes: Second spacer columns are evenly distributed on one side of the color film substrate close to the array substrate, the second spacer columns are connected to the color film substrate, and are arranged in the same layer as the first spacer columns. In a first direction, the height of the second spacer columns is less than the height of the first spacer columns, and the first direction is the thickness direction of the display panel.

21. The method for manufacturing a display panel according to claim 19, characterized in that: Also includes: The second coating layer is formed by low-temperature distillation, and is located on a side of the film layer where the first spacer is located facing the array substrate. The second coating layer and the first coating layer are made of the same material.

22. A display device, characterized in that: Comprising a display panel as described in any one of claims 1-18.

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