CN116107120A - Display panel, manufacturing method thereof and display device - Google Patents
Display panel, manufacturing method thereof and display device Download PDFInfo
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- CN116107120A CN116107120A CN202310238228.3A CN202310238228A CN116107120A CN 116107120 A CN116107120 A CN 116107120A CN 202310238228 A CN202310238228 A CN 202310238228A CN 116107120 A CN116107120 A CN 116107120A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 183
- 125000006850 spacer group Chemical group 0.000 claims abstract description 126
- 238000000576 coating method Methods 0.000 claims abstract description 110
- 239000011248 coating agent Substances 0.000 claims abstract description 105
- 239000010410 layer Substances 0.000 claims description 132
- 238000009498 subcoating Methods 0.000 claims description 45
- 239000011247 coating layer Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 16
- 238000005292 vacuum distillation Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052731 fluorine Inorganic materials 0.000 claims description 2
- 239000011737 fluorine Substances 0.000 claims description 2
- 239000003921 oil Substances 0.000 claims description 2
- 239000010702 perfluoropolyether Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 description 90
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000011521 glass Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003666 anti-fingerprint Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The application provides a display panel, a manufacturing method thereof and a display device, and relates to the technical field of display, wherein the display panel comprises an array substrate, a color film substrate, a first spacing column, an alignment layer and a first coating, wherein the array substrate and the color film substrate are oppositely arranged; the alignment layer comprises a first alignment layer and a second alignment layer, the first alignment layer is positioned on one side of the array substrate facing the color film substrate, and the second alignment layer is positioned on one side of the color film substrate facing the array substrate; one side of the first alignment layer, which faces the color film substrate, is provided with a first coating, and the first spacer columns overlap with the first coating along a first direction, wherein the first direction is the thickness direction of the display panel. The display panel reduces the friction coefficient between the first spacer columns and the first alignment layer by arranging the first coating, so that the friction force is reduced, the light leakage phenomenon caused by the phase difference generated by larger friction force is reduced, and the dark state display uniformity of the display panel is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a display device.
Background
The thin film transistor liquid crystal display device is increasingly used in various devices requiring display due to its low power consumption, high definition, long life, small size, light weight, etc.
In the prior art, the liquid crystal display panel has poor dark state uniformity, which is mainly caused by dark state light leakage, and the main reason of the dark state light leakage is that the display panel receives external force. According to photoelastic theory, even if glass is an isotropic substance, anisotropy occurs under the action of external force, that is, the refractive index is different under different stress, 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 an external force is applied, glass deforms, friction force between the spacer columns and the alignment layer is increased, stress is mainly caused by the friction force between the spacer columns and the array substrate, the increase of the friction force can cause the increase of the stress, and then a glass birefringence phenomenon is caused, a larger phase difference is generated, optical delay is generated, light leakage phenomenon of the display panel in a dark state is caused, and dark state uniformity of the display panel is also influenced.
Disclosure of Invention
In view of the above, the present invention provides a display panel, a method for manufacturing the same, and a display device for improving the phenomena of light leakage and poor dark state uniformity of the display panel.
In a first aspect, the present application provides a display panel, including an array substrate and a color film substrate that are disposed opposite to each other, and a first spacer, an alignment layer, and a first coating that are disposed between the array substrate and the color film substrate;
the alignment layer comprises a first alignment layer and a second alignment layer, the first alignment layer is positioned on one side of the array substrate facing the color film substrate, and the second alignment layer is positioned on one side of the color film substrate facing the array substrate;
the first alignment layer is provided with a first coating on one side facing the color film substrate, and the first spacer columns are overlapped with the first coating along a first direction, wherein the first direction is the thickness direction of the display panel.
In a second aspect, based on the same inventive concept, the present application further provides a method for manufacturing a display panel, including: providing an array substrate and a color film substrate, wherein the array substrate and the color film substrate are oppositely arranged;
spraying alignment liquid on one side of the array substrate facing the color film substrate to form a first alignment layer, and spraying alignment liquid on one side of the color film substrate facing the array substrate to form a second alignment layer;
uniformly distributing first spacing columns on one side of the color film substrate, which is close to the array substrate, wherein the first spacing columns are connected with the color film substrate;
and forming a first coating by low-temperature distillation film forming, wherein the first coating is positioned on one side of the first alignment layer facing the color film substrate.
In a third aspect, based on the same inventive concept, the present application also provides a display device including the display panel in the first aspect.
Compared with the prior art, the display panel, the manufacturing method thereof and the display device provided by the invention have the advantages that at least the following beneficial effects are realized:
the display panel comprises an array substrate, a color film substrate, a first spacing column, an alignment layer and a first coating, wherein the array substrate and the color film substrate are oppositely arranged; the alignment layer comprises a first alignment layer and a second alignment layer, the first alignment layer is positioned on one side of the array substrate facing the color film substrate, and the second alignment layer is positioned on one side of the color film substrate facing the array substrate; one side of the first alignment layer, which faces the color film substrate, is provided with a first coating, and the first spacer columns overlap with the first coating along a first direction, wherein the first direction is the thickness direction of the display panel. The display panel reduces the friction coefficient between the first spacer columns and the first alignment layer by arranging the first coating, so that the friction force is reduced, the light leakage phenomenon caused by the phase difference generated by larger friction force is reduced, and the dark state display uniformity of the display panel is improved.
Of course, it is not necessary for any one product embodying the invention to achieve all of the technical effects described above at the same time.
Other features of the present invention and its advantages will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a top view of a display panel according to an embodiment of the present disclosure;
FIG. 2 is a schematic cross-sectional view taken along BB' in FIG. 1;
FIG. 3 is a schematic cross-sectional view taken along line CC' of FIG. 1;
FIG. 4 is another schematic cross-sectional view taken along line CC' of FIG. 1;
FIG. 5 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 6 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 7 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 8 is another schematic cross-sectional view taken along BB' in FIG. 1;
FIG. 9 is a schematic view of a further cross-section along BB' in FIG. 1;
FIG. 10 is a schematic view of a further cross-section along BB' in FIG. 1;
FIG. 11 is a schematic view of a further cross-section along BB' in FIG. 1;
FIG. 12 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 13 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 14 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 15 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 16 is a schematic view of a further cross-section along CC' of FIG. 1;
FIG. 17 is a schematic view of a further cross-section along BB' in FIG. 1;
FIG. 18 is a schematic view of a further cross-section along BB' in FIG. 1;
FIG. 19 is a schematic view of a further cross-section along BB' in FIG. 1;
FIG. 20 is a schematic view of a further cross-section along BB' in FIG. 1;
fig. 21 illustrates a method for manufacturing a display panel according to an embodiment of the present application;
fig. 22 is a diagram illustrating a structure of a display device according to an embodiment of the present application.
Detailed Description
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 the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of exemplary embodiments may have different values.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
The thin film transistor liquid crystal display device is increasingly used in various devices requiring display due to its low power consumption, high definition, long life, small size, light weight, etc.
In the prior art, the display panel comprises an array substrate, a color film substrate, an alignment layer and a spacing column, wherein the alignment layer and the spacing column are positioned between the array substrate and the color film substrate, when the display panel is subjected to external force, glass can deform, friction between the spacing column and the alignment layer is increased, and then larger phase difference is generated, optical delay is generated, light leakage of the display panel in a dark state is caused, and dark state uniformity of the display panel is also influenced.
In view of the above, the present invention provides a display panel, a method for manufacturing the same, and a display device for improving the phenomena of light leakage and poor dark state uniformity of the display panel.
Fig. 1 is a top view of a display panel according to an embodiment of the present application, and fig. 2 is a schematic cross-sectional view along BB' in fig. 1; referring to fig. 1 and 2, an embodiment of the present application provides a display panel 100, which includes an array substrate 10 and a color film substrate 20 disposed opposite to each other, and a first spacer 41, an alignment layer and a first coating 50 disposed between the array substrate 10 and the color film substrate 20;
the alignment layer comprises a first alignment layer 31 and a second alignment layer 32, wherein the first alignment layer 31 is positioned on one side of the array substrate 10 facing the color film substrate 20, and the second alignment layer 32 is positioned on one side of the color film substrate 20 facing the array substrate 10;
the first alignment layer 31 is provided with a first coating layer 50 on a side facing the color film substrate 20, and the first spacer 41 overlaps the first coating layer 50 along a first direction, which is a thickness direction of the display panel 100.
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 one side of the array substrate 10 and the color film substrate 20, which are close to each other, wherein the alignment layers are used for uniformly arranging liquid crystal molecules according to a certain sequence, alternatively, the first alignment layer 31 is positioned on the side of the array substrate 10, and the second alignment layer 32 is positioned on the side of the color film substrate 20; the first spacing columns 41 are further arranged between the array substrate 10 and the color film substrate 20, and the first spacing columns 41 play a static supporting role, so that a certain spacing distance is ensured 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 one side of the first alignment layer 31 near the color film substrate 20, and along the first direction, the first coating 50 overlaps the first spacer 41. Since the area where the first coating layer 50 and the first spacer 41 are abutted is a high-emission area where friction is generated, the first coating layer 50 and the first spacer 41 are overlapped, so that the friction coefficient between the first alignment layer 31 and the first spacer 41 can be reduced, the friction force between the first alignment layer 31 and the first spacer 41 can be reduced, the light leakage phenomenon caused by the phase difference generated by the larger friction force can be reduced, and the dark state display uniformity of the display panel 100 can be improved.
It will be appreciated that the first coating 50 is made of an anti-fingerprint material, and its main component includes at least one of perfluoropolyether and fluorine oil, wherein the effective group is a CF organic chain, i.e., an ether chain having a structure of-CF 2-O-CF2, and the first coating 50 has excellent abrasion resistance and a low coefficient of friction. The calculation formula of the phase difference is:
R＝S*t*Δσ，
wherein R represents a phase difference, S represents a photoelastic coefficient of the glass, and DeltaSigma represents a friction force; the friction force is calculated by the following formula:
wherein Δσ represents the friction force, μ represents the friction coefficient between the spacer column and the alignment layer, N represents the contact area between the spacer column and the alignment layer, Δl/L refers to the compression rate of the spacer column, and K is the elastic coefficient of the spacer column material. Since the first coating layer 50 has a low friction coefficient, the friction force is reduced, the light leakage phenomenon due to the phase difference generated by the large friction force is reduced, and the dark state display uniformity of the display panel 100 is improved.
Fig. 3 is a schematic cross-sectional view along CC' in fig. 1, referring to fig. 3, optionally, the display panel 100 includes a display area AA and a frame area NA disposed at a periphery of the display area AA, where the first coating 50 is located at least in the frame area NA.
Specifically, the frame area NA of the display panel 100 is a high light-emitting area of light leakage, and therefore, the first coating 50 is disposed at least in the frame area NA, and since the first coating 50 has a low friction coefficient, the friction force between the first alignment layer 31 and the first spacer 41 in the frame area NA can be reduced, thereby reducing the light leakage phenomenon caused by the phase difference generated by the large friction force, and further improving the dark state display uniformity of the display panel 100.
Fig. 4 is another schematic cross-sectional view along CC 'in fig. 1, fig. 5 is another schematic cross-sectional view along CC' in fig. 1, please refer to fig. 4 and 5, alternatively, the first coating 50 is at least located in the display area AA, and the first coating 50 covers the entire display area AA.
Specifically, referring to fig. 4, in an alternative embodiment, the first coating 50 is disposed in the display area AA, and the first coating 50 is planar, that is, the first coating 50 covers the entire display area AA, in the display area AA, the first alignment layer 31 is disposed on one side close to the first spacer columns 41, and the first coating 50 is disposed on the entire surface, so that the first coating 50 has a lower friction coefficient, and the entire surface is disposed in the display area AA, so that the friction coefficient between the film layer of the first spacer columns 41 and the first alignment layer 31 in the display area is reduced, the friction force is further reduced, the light leakage phenomenon caused by the phase difference generated by the larger friction force is reduced, and the dark state display uniformity of the display panel 100 is improved.
Referring to fig. 5, in another alternative embodiment, the first coating layer 50 is configured as a planar structure and is located in the display area AA and the frame area NA surrounding the display area AA, that is, the first coating layer 50 covers the display area AA and the frame area NA, so that the friction coefficient between the film layer where the first spacer columns 41 are located and the first alignment layer 31 in the display area AA and the frame area NA is reduced, the friction force is further reduced, the light leakage phenomenon caused by the phase difference generated by the larger friction force in the box is reduced, and the dark state display uniformity of the display panel 100 is further improved.
Fig. 6 is a schematic cross-sectional view of fig. 1 along CC', and referring to fig. 6, optionally, the first coating 50 is at least located in the display area AA, and includes a plurality of first sub-coating units 51, where, along the first direction, the projection of the first sub-coating units 51 onto the plane of the array substrate 10 at least overlaps the projection of the first spacer columns 41 onto the plane of the array substrate 10.
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, where the first sub-coating units 51 are disposed between the first spacer columns 41 and the first alignment layer 31, and a projection of the first sub-coating units 51 onto a plane of the array substrate 10 at least overlaps a projection of the first spacer columns 41 onto the plane of the array substrate 10. The friction between the first spacer columns 41 and the first alignment layer 31 is a main source of friction force, the first sub-coating units 51 are arranged on one side of the first alignment layer 31, which is close to the first spacer columns 41, so that the friction between the first alignment layer 31 and the first spacer columns 41 can be reduced, and meanwhile, compared with the situation that the first coating units 50 are arranged on the whole surface, the first sub-coating units 51 are arranged at the corresponding positions of only part of the first spacer columns 41, so that the use of materials of the first coating units 50 can be reduced, the manufacturing cost is reduced, the light leakage phenomenon caused by friction is reduced, and meanwhile, the manufacturing cost is reduced.
Fig. 7 is a schematic cross-sectional view of fig. 1 along CC', referring to fig. 7, optionally, the first sub-coating units 51 are in one-to-one correspondence with the first spacer columns 41.
Specifically, in an alternative embodiment, each first spacer column 41 is correspondingly provided with one first sub-coating unit 51, so that the friction force between each first spacer column 41 and the first alignment layer 31 can be reduced, the light leakage phenomenon caused by the phase difference generated by the larger friction force of the display panel 100 is further improved, and the dark state uniformity of the display panel 100 is improved.
Fig. 8 is a schematic cross-sectional view of fig. 1 along BB', and referring to fig. 8, optionally, the display panel 100 further includes second spacer columns 42, where the second spacer columns 42 are connected to the color film substrate 20, are located between the array substrate 10 and the color film substrate 20, and are arranged in the same layer as the first spacer columns 41, and the height of the second spacer columns 42 along the first direction is smaller than that of the first spacer columns 41.
Specifically, the display panel 100 provided by the application includes an array substrate 10 and a color film substrate 20 that are oppositely arranged, and a certain spacing distance is required to be kept between the array substrate 10 and the color film substrate 20, so that a first spacing column 41 is arranged to play a static supporting role, and when the display panel 100 is under pressure, a certain distance is still required to be kept between the array substrate 10 and the color film substrate 20, so that a second spacing column 42 is arranged, and the height of the second spacing column 42 along the first direction is smaller than that of the first spacing column 41, so that the display panel 100 plays a supporting role when being under pressure.
Fig. 9 is a schematic cross-sectional view of fig. 1 along BB', and referring to fig. 9, optionally, the first coating 50 includes a plurality of second sub-coating units 52, and along the first direction, the projection of the second sub-coating units 52 onto the plane of the array substrate 10 overlaps at least the projection of the second spacer columns 42 onto the plane of the array substrate 10.
Specifically, when the display panel 100 is pressed, the second spacer columns 42 play a supporting role between the array substrate 10 and the color film substrate 20, so that a friction force is generated between the second spacer columns 42 and the first alignment layer 31, in order to reduce the friction force, the second sub-coating units 52 are disposed on one side of the first alignment layer 31 near the second spacer columns 42, where the projection of the second sub-coating units 52 onto the plane of the array substrate 10 overlaps at least the projection of the second spacer columns 42 onto the plane of the array substrate 10, i.e. at least a part of the positions corresponding to the second spacer columns 42 are disposed with the second sub-coating units 52, the friction coefficient of the second sub-coating units 52 is smaller, so that the friction force between the first alignment layer 31 and the second spacer columns 42 is also smaller, thereby improving the phenomenon caused by friction of the second spacer columns 42 and improving the dark state uniformity of the display panel 100.
Fig. 10 is a schematic cross-sectional view along BB' in fig. 1, referring to fig. 10, optionally, the second sub-coating units 52 are in one-to-one correspondence with the second spacer columns 42.
Specifically, in an alternative embodiment, each second spacer column 42 is correspondingly provided with one second sub-coating unit 52, so that the friction force between each second spacer column 42 and the first alignment layer 31 can be reduced, the light leakage phenomenon caused by the larger friction force of the display panel 100 is further reduced, and the dark state uniformity of the display panel 100 is improved.
Fig. 11 is a schematic cross-sectional view of fig. 1 along BB', and referring to fig. 11, optionally, the display panel 100 further includes a second coating 60, the second coating 60 is located on a side of the film layer where the first spacer columns 41 are located facing the array substrate 10, and along the first direction, the first spacer columns 41 overlap with the second coating 60.
Specifically, in order to further reduce the friction between the first spacer columns 41 and the first alignment layer 31, the display panel 100 provided herein further includes a second coating 60, where the second coating 60 is adjacent to the film layer where the first spacer columns 41 are located, and is located at a side of the film layer where the first spacer columns 41 are located facing the array substrate 10. The present application provides an alternative embodiment in which the first spacer posts 41 overlap the second coating 60.
It should be noted that, the second coating layer 60 and the first coating layer 50 are made of the same material and have a lower friction coefficient, so that the friction force between the first spacer 41 and the first alignment layer 31 is reduced, the light leakage phenomenon of the display panel 100 caused by the larger friction force is reduced, and the dark state uniformity of the display panel 100 is improved.
Fig. 12 is a schematic cross-sectional view of fig. 1 along CC', referring 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 60 is at least located in the frame area NA.
Specifically, the frame area NA of the display panel 100 is a high light-emitting area of light leakage, so that the second coating 60 is disposed at least in the frame area NA, and the first coating 50 and the second coating 60 are made of the same material and have low friction coefficients, so that friction between the first spacer 41 and the first alignment layer 31 can be reduced, light leakage caused by a phase difference generated by a large friction force can be reduced, and dark state display uniformity of the display panel 100 can be improved.
Fig. 13 is a schematic cross-sectional view of fig. 1 along CC ', fig. 14 is a schematic cross-sectional view of fig. 1 along CC', please refer to fig. 13 and 14, alternatively, the second coating 60 is at least located in the display area AA, and the second coating 60 covers the entire display area AA.
Specifically, referring to fig. 13, an alternative embodiment is provided in this application, the second coating 60 is disposed in the display area AA, and the second coating 60 is planar, that is, the second coating 60 covers the entire display area AA, in the display area AA, the film layer where the first spacer columns 41 are located is close to one side of the first alignment layer 31, and an entire second coating 60 is disposed, because the second coating 60 has a lower friction coefficient, and the entire surface is disposed in the display area AA, the friction coefficient between the film layer where the first spacer columns 41 are located and the first alignment layer 31 is reduced, the friction force in the box is further reduced, the light leakage phenomenon caused by the phase difference generated by the larger friction force in the box is reduced, and the dark state display uniformity of the display panel 100 is further improved.
Referring to fig. 14, in another alternative embodiment, the second coating 60 is disposed in a planar structure and is located in the display area AA and the frame area NA surrounding the display area AA, that is, the second coating 60 covers the display area AA and the frame area NA, so that 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 is reduced, the friction force in the case is further reduced, the light leakage phenomenon caused by the phase difference generated by the larger friction force in the case is reduced, and the dark state display uniformity of the display panel 100 is further improved.
Fig. 15 is a schematic cross-sectional view of fig. 1 along CC', and referring 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, where, along the first direction, the projection of the third sub-coating units 61 onto the plane of the array substrate 10 at least overlaps the projection of the first spacer columns 41 onto the plane of the array substrate 10.
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, where the third sub-coating units 61 are disposed between the first spacer columns 41 and the first alignment layer 31, and a projection of the third sub-coating units 61 onto a plane of the array substrate 10 at least overlaps a projection of the first spacer columns 41 onto the plane of the array substrate 10. The friction between the first spacer columns 41 and the first alignment layer 31 is a main source of friction force in the box, the third sub-coating units 61 are arranged on one side, close to the first alignment layer 31, of the film layer where the first spacer columns 41 are located, so that the friction between the first alignment layer 31 and the first spacer columns 41 can be further reduced, meanwhile, compared with the whole surface of the film layer where the second coating 60 is arranged, the third sub-coating units 61 are arranged only at the corresponding positions of part of the first spacer columns 41, the use of materials of the first coating 50 can be reduced, the manufacturing cost is reduced, the light leakage phenomenon caused by friction is reduced, and meanwhile the manufacturing cost is reduced.
It should be noted that, the second coating layer may also be coated on the outer surface of the first spacer pillar, so that the friction force between the first spacer pillar and the first alignment layer is smaller, so that the light leakage phenomenon caused by friction can be better improved, and the dark state display uniformity of the display panel is improved. Similarly, the second coating may also cover the outer surfaces of the second spacer columns, thereby reducing friction between the second spacer columns and the first alignment layer.
Fig. 16 is a schematic cross-sectional view of fig. 1 along CC', and referring to fig. 16, optionally, a third sub-coating unit 61 is in one-to-one correspondence with the first spacer 41.
Specifically, in an alternative embodiment, each first spacer column 41 is correspondingly provided with one third sub-coating unit 61, so that the friction force between each first spacer column 41 and the first alignment layer 31 can be further reduced, the light leakage phenomenon of the display panel 100 caused by larger friction force can be better improved, and the dark state uniformity of the display panel 100 can be improved.
Fig. 17 is a schematic cross-sectional view of fig. 1 along BB', and referring to fig. 17, optionally, the display panel 100 further includes second spacer columns 42, where the second spacer columns 42 are connected to the color film substrate 20, are located between the array substrate 10 and the color film substrate 20, and are arranged in the same layer as the first spacer columns 41, and the height of the second spacer columns 42 in the first direction is smaller than that of the first spacer columns 41.
Specifically, the present application provides an alternative embodiment, in which the display panel 100 includes an array substrate 10 and a color film substrate 20 that are disposed opposite to each other, a first alignment layer 31 is disposed on a side of the array substrate 10 adjacent to the color film substrate 20, and a second alignment layer 32 is disposed on a side of the color film substrate 20 adjacent to the array substrate 10; a first spacing column 41 and a second spacing column 42 are arranged between the first alignment layer 31 and the second alignment layer 32, the first spacing column 41 and the second spacing column 42 are connected with the color film substrate 20, and the height of the second spacing column 42 along the first direction is smaller than that of the first spacing column 41; the first coating layer 50 is disposed on one side of the first alignment layer 31 adjacent to the first spacer 41, and the second coating layer 60 is disposed on one side of the first spacer 41 adjacent to the first alignment layer 31, and the friction between the first alignment layer 31 and the first spacer 41 is reduced due to the low friction coefficient of the first coating layer 50 and the second coating layer 60, so that the phenomenon of light leakage caused by friction of the second spacer 42 is improved, and the dark state uniformity of the display panel 100 is improved.
Fig. 18 is a schematic cross-sectional view of fig. 1 along BB', and referring to fig. 18, optionally, the second coating 60 includes a plurality of fourth sub-coating units 62, and along the first direction, the projection of the fourth sub-coating units 62 onto the plane of the array substrate 10 at least overlaps the projection of the second spacer columns 42 onto the plane of the array substrate 10.
Specifically, in order to further reduce friction between the second spacer columns 42 and the first alignment layer 31, a fourth sub-coating unit 62 is disposed on a side of the second spacer columns 42 close to the first alignment layer 31, where the projection of the fourth sub-coating unit 62 onto the plane of the array substrate 10 at least overlaps with the projection of the second spacer columns 42 onto the plane of the array substrate 10, and the friction coefficient of the fourth sub-coating unit 62 is smaller, so that friction between the first alignment layer 31 and the second spacer columns 42 is further reduced, and therefore, the phenomenon of light leakage caused by friction between the second spacer columns 42 and the first alignment layer 31 is improved, and the dark state uniformity of the display panel 100 is improved.
Fig. 19 is a schematic cross-sectional view along BB' in fig. 1, referring to fig. 19, optionally, the fourth sub-coating units 62 are in one-to-one correspondence with the second spacer columns 42.
Specifically, in an alternative embodiment, each second spacer column 42 is correspondingly provided with one fourth sub-coating unit 62, so that the friction force between each second spacer column 42 and the first alignment layer 31 can be further reduced, thereby reducing the light leakage phenomenon caused by larger friction force of the display panel 100 and better improving the dark state uniformity of the display panel 100.
FIG. 20 is a schematic cross-sectional view along BB' in FIG. 1. Referring to FIG. 20, alternatively, the thickness of the first coating layer 50 and the second coating layer 60 along the first direction is D, and D is 5 nm.ltoreq.D.ltoreq.10 nm.
Specifically, when the thickness D of the first and second coatings 50 and 60 in the first direction is <5nm, the thicknesses of the first and second coatings 50 and 60 are thinner, and the first and second spacer columns 41 and 42 still generate a larger friction with the first alignment layer 31; when the thickness D of the first and second coatings 50 and 60 in the first direction is >10nm, the thicker thickness of the first and second coatings 50 and 60 may affect the flatness and level differences within the liquid crystal cell; therefore, the thickness of the first and second coatings 50 and 60 in the first direction is 5nm and 10nm, respectively, and thus the friction force can be reduced, the light leakage phenomenon of the display panel 100 can be improved, and the flatness and the level difference in the liquid crystal cell can not be affected.
With continued reference to fig. 20, in an alternative embodiment, the first coating layer 50 is disposed on a side of the first alignment layer 31 near the color film substrate 20, where 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 columns 41 one by one, and the second coating layer 60 unit corresponds to the second spacer columns 42 one by one; the second coating 60 is disposed on one side of the film layer where the first spacer columns 41 are located, near the array substrate 10, the second coating 60 includes a third coating unit and a fourth coating unit, the third coating unit corresponds to the first spacer columns 41 one by one, the fourth coating unit corresponds to the second spacer columns 42 one by one, that is, the first spacer columns 41 are correspondingly provided with the first coating 50 and the second coating 60, the second spacer columns 42 are correspondingly provided with the first coating 50 and the second coating 60, and due to the smaller friction coefficient of the first coating 50 and the second coating 60, the friction force between the first alignment layer 31 and the first spacer columns 41 and between the second spacer columns 42 is reduced, so that the light leakage phenomenon caused by larger friction force of the display panel 100 is reduced, and the dark state uniformity of the display panel 100 is better improved.
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 the embodiment of the present application, and fig. 21 shows a method for manufacturing a display panel provided in the embodiment of the present application, please refer to fig. 21, including:
s01, providing an array substrate 10 and a color film substrate 20, wherein the array substrate 10 and the color film substrate 20 are arranged oppositely;
s02, spraying an alignment liquid on one side of the array substrate 10 facing the color film substrate 20 to form a first alignment layer 31, and spraying an alignment liquid on one side of the color film substrate 20 facing the array substrate 10 to form a second alignment layer 32;
s03, uniformly distributing first spacing columns 41 on one side of the color film substrate 20, which is close to the array substrate 10, wherein the first spacing columns 41 are connected with the color film substrate 20;
s04, forming a first coating 50 through low-temperature distillation film forming, wherein the first coating 50 is positioned on one side of the first alignment layer 31 facing the color film substrate 20. That is, a mask is disposed on a side of the first alignment layer 31 facing the color film substrate 20, and a first coating 50 is formed on a side of the first alignment layer 31 facing the color film substrate 20 by low-temperature distillation film formation.
It should be noted that, the display panel 100 manufactured by the method forms the first coating layer 50 by low-temperature distillation film forming, the first coating layer 50 has a lower friction coefficient, and reduces the friction force between the first alignment layer 31 and the first spacer 41, thereby reducing the light leakage phenomenon of the display panel 100 caused by larger friction force, and better improving the dark state uniformity of the display panel 100. Meanwhile, the film forming method by low-temperature distillation does not affect the film layers of the color film substrate 20 and the array substrate 10.
Optionally, referring to fig. 8 and 17, the method for manufacturing a display panel provided in the embodiment of the invention further includes: the second spacer columns 42 are uniformly distributed on one side of the color film substrate 20, which is close to the array substrate 10, and the second spacer columns 42 are connected with the color film substrate 20 and are arranged on the same layer as the first spacer columns 41, and in the first direction, the height of the second spacer columns 42 is smaller than that of the first spacer columns 41, and the first direction is the thickness direction of the display panel 100.
Specifically, in an alternative embodiment, when the first spacer columns 41 are uniformly distributed on the side of the color film substrate 20 near the array substrate 10, the second spacer columns 42 are simultaneously disposed, and the second spacer columns 42 and the first spacer columns 41 are connected to the color film substrate 20 and disposed on the same film layer, and the height of the second spacer columns 42 along the first direction is smaller than the height of the first spacer columns 41.
Optionally, referring to fig. 11 to fig. 20, the method for manufacturing a display panel provided by the embodiment of the invention further includes: the second coating 60 is formed by low temperature distillation film formation, and the second coating 60 is located at one side of the film layer where the first spacer 41 is located, which faces the array substrate 10.
Specifically, the display panel 100 further includes the second coating 60, the manufacturing method of the second coating 60 is the same as that of the first coating 50, and the second coating 60 is also formed by a low-temperature distillation film forming method, that is, a mask is disposed on a side of the film layer where the first spacer columns 41 are located, which faces the array substrate 10, and the second coating 60 is formed on a side of the film layer where the first spacer columns 41 are located, which faces the array substrate 10, by a low-temperature distillation film forming method, and the second coating 60 has a lower friction coefficient, so that the friction force between the first alignment layer 31 and the first spacer columns 41 is reduced, thereby reducing the light leakage phenomenon of the display panel 100 due to the larger friction force, and better improving the dark state uniformity of the display panel 100. Meanwhile, the film forming method by low-temperature distillation does not affect the film layers of the color film substrate 20 and the array substrate 10.
Based on the same inventive concept, fig. 22 is a schematic diagram of a display device provided in the embodiment of the present application, and please refer to fig. 22, where the display device includes a display panel 100, and the display panel 100 is a display panel provided in the foregoing embodiment of the present application. It should be noted that, in the embodiment of the display device 200 provided in the embodiment of the present application, reference may be made to the embodiment of the display panel described above, and the repetition is not repeated. The display device 200 provided in the present application may be: any product or component with realistic functions such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
According to the embodiment, the display panel, the manufacturing method thereof and the display device provided by the invention have the following beneficial effects:
the application provides a display panel which comprises an array substrate, a color film substrate, a first spacing column, an alignment layer and a first coating, wherein the array substrate and the color film substrate are oppositely arranged; the alignment layer comprises a first alignment layer and a second alignment layer, the first alignment layer is positioned on one side of the array substrate facing the color film substrate, and the second alignment layer is positioned on one side of the color film substrate facing the array substrate; one side of the first alignment layer, which faces the color film substrate, is provided with a first coating, and the first spacer columns overlap with the first coating along a first direction, wherein the first direction is the thickness direction of the display panel. The display panel reduces the friction coefficient between the first spacing columns and the alignment layer by arranging the first coating, so that the friction force in the box is reduced, the light leakage phenomenon caused by the phase difference generated by the larger friction force in the box is reduced, and the dark state display uniformity of the display panel is improved.
While certain specific embodiments of the 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 invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (22)
1. A display panel, which is characterized in that,
the color film comprises an array substrate, a color film substrate, a first spacer column, an alignment layer and a first coating, wherein the array substrate and the color film substrate are oppositely arranged;
the alignment layer comprises a first alignment layer and a second alignment layer, the first alignment layer is positioned on one side of the array substrate facing the color film substrate, and the second alignment layer is positioned on one side of the color film substrate facing the array substrate;
the first alignment layer is provided with a first coating on one side facing the color film substrate, and the first spacer columns are overlapped with the first coating along a first direction, wherein the first direction is the thickness direction of the display panel.
2. The display panel of claim 1, wherein the display panel comprises,
the display panel comprises a display area and a frame area arranged on the periphery of the display area, and the first coating is at least positioned in the frame area.
3. The display panel of claim 2, wherein the display panel comprises,
the first coating is at least located in the display area, and the first coating covers the whole display area.
4. The display panel of claim 2, wherein the display panel comprises,
the first coating is at least located in the display area and comprises a plurality of first sub-coating units, and along the first direction, the projection of the first sub-coating units to the plane of the array substrate is overlapped with the projection of the first spacing columns to the plane of the array substrate.
5. The display panel of claim 4, wherein the display panel comprises,
the first sub-coating units are in one-to-one correspondence with the first spacer columns.
6. The display panel of claim 1, wherein the display panel comprises,
the display panel further comprises second spacing columns, the second spacing columns are connected with the color film substrate, located between the array substrate and the color film substrate and arranged on the same layer as the first spacing columns, and the height of the second spacing columns along the first direction is smaller than that of the first spacing columns.
7. The display panel of claim 6, wherein the display panel comprises,
the first coating comprises a plurality of second sub-coating units, and along the first direction, the projection of the second sub-coating units to the plane of the array substrate is overlapped with the projection of the second spacing columns to the plane of the array substrate at least.
8. The display panel of claim 7, wherein the display panel comprises,
the second sub-coating units are in one-to-one correspondence with the second spacer columns.
9. The display panel of claim 1, wherein the display panel comprises,
the display panel further comprises a second coating layer, the second coating layer is located on one side, facing the array substrate, of the film layer where the first spacing columns are located, and the first spacing columns overlap with the second coating layer along the first direction.
10. The display panel of claim 9, wherein the display panel comprises,
the display panel comprises a display area and a frame area arranged on the periphery of the display area, and the second coating is at least positioned in the frame area.
11. The display panel of claim 10, wherein the display panel comprises,
the second coating is at least located in the display area, and the second coating covers the whole display area.
12. The display panel of claim 10, wherein the display panel comprises,
the second coating is at least located in the display area and comprises a plurality of third sub-coating units, and along the first direction, the projection of the third sub-coating units to the plane of the array substrate is overlapped with the projection of the first spacing columns to the plane of the array substrate.
13. The display panel of claim 12, wherein the display panel comprises,
the third sub-coating units are in one-to-one correspondence with the first spacer columns.
14. The display panel of claim 9, wherein the display panel comprises,
the display panel further comprises second spacing columns, the second spacing columns are connected with the color film substrate, located between the array substrate and the color film substrate and arranged on the same layer as the first spacing columns, and the height of the second spacing columns along the first direction is smaller than that of the first spacing columns.
15. The display panel of claim 14, wherein the display panel comprises,
the second coating comprises a plurality of fourth sub-coating units, and along the first direction, the projection of the fourth sub-coating units to the plane of the array substrate is overlapped with the projection of the second spacing columns to the plane of the array substrate at least.
16. The display panel of claim 15, wherein the display panel comprises,
the fourth sub-coating units are in one-to-one correspondence with the second spacer columns.
17. The display panel of claim 9, wherein the display panel comprises,
the thickness of the first coating and the second coating along the first direction is D, and D is more than or equal to 5nm and less than or equal to 10nm.
18. The display panel of claim 9, wherein the display panel comprises,
the components of the first coating and the second coating at least comprise one of perfluoropolyether and fluorine oil.
19. A method for manufacturing a display panel, comprising:
providing an array substrate and a color film substrate, wherein the array substrate and the color film substrate are oppositely arranged;
spraying alignment liquid on one side of the array substrate facing the color film substrate to form a first alignment layer, and spraying alignment liquid on one side of the color film substrate facing the array substrate to form a second alignment layer;
uniformly distributing first spacing columns on one side of the color film substrate, which is close to the array substrate, wherein the first spacing columns are connected with the color film substrate;
and forming a first coating by low-temperature distillation film forming, wherein the first coating is positioned on one side of the first alignment layer facing the color film substrate.
20. The method of manufacturing a display panel according to claim 19, further comprising:
and second spacing columns are uniformly distributed on one side of the color film substrate, which is close to the array substrate, and are connected with the color film substrate and are arranged on the same layer as the first spacing columns, and in a first direction, the height of each second spacing column is smaller than that of each first spacing column, and the first direction is the thickness direction of the display panel.
21. The method of manufacturing a display panel according to claim 19, further comprising:
and forming a second coating by low-temperature distillation film forming, wherein the second coating is positioned on one side of the film layer where the first spacing columns are positioned, which faces the array substrate.
22. A display device comprising a display panel as claimed in any one of claims 1-18.
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| CN202310238228.3A CN116107120A (en) | 2023-03-13 | 2023-03-13 | Display panel, manufacturing method thereof and display device |
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| CN202310238228.3A CN116107120A (en) | 2023-03-13 | 2023-03-13 | Display panel, manufacturing method thereof and display device |
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