CN114675439B - Display panel, preparation method thereof and display device - Google Patents
Display panel, preparation method thereof and display device Download PDFInfo
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- CN114675439B CN114675439B CN202210333529.XA CN202210333529A CN114675439B CN 114675439 B CN114675439 B CN 114675439B CN 202210333529 A CN202210333529 A CN 202210333529A CN 114675439 B CN114675439 B CN 114675439B
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- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000010410 layer Substances 0.000 claims abstract description 95
- 239000000758 substrate Substances 0.000 claims abstract description 81
- 239000012790 adhesive layer Substances 0.000 claims abstract description 28
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 20
- 239000002159 nanocrystal Substances 0.000 claims description 34
- 239000004973 liquid crystal related substance Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 239000003446 ligand Substances 0.000 claims description 16
- 229920001721 polyimide Polymers 0.000 claims description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- -1 diamine compound Chemical class 0.000 claims description 5
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical group [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
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- 239000000463 material Substances 0.000 abstract description 7
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- 230000001737 promoting effect Effects 0.000 description 2
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
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- WUPHOULIZUERAE-UHFFFAOYSA-N 3-(oxolan-2-yl)propanoic acid Chemical compound OC(=O)CCC1CCCO1 WUPHOULIZUERAE-UHFFFAOYSA-N 0.000 description 1
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
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- 230000004888 barrier function Effects 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
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- 238000010494 dissociation reaction Methods 0.000 description 1
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- 238000002156 mixing Methods 0.000 description 1
- 239000002707 nanocrystalline material Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000016 photochemical curing Methods 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- GGYFMLJDMAMTAB-UHFFFAOYSA-N selanylidenelead Chemical compound [Pb]=[Se] GGYFMLJDMAMTAB-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
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Classifications
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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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application provides a display panel, a preparation method thereof and a display device, wherein the display panel comprises a display area and a frame area positioned on the periphery of the display area, and the display panel comprises: a first substrate; the second substrate is arranged in a pair with the first substrate; two alignment layers, one is set up in one side of said first base plate close to said second base plate, another alignment layer is set up in one side of said second base plate close to said first base plate; the frame adhesive layer is arranged between the two alignment layers and correspondingly arranged in the frame area; any one of the alignment layers comprises a first alignment part and a second alignment part, the first alignment part covers the display area, the second alignment part is positioned in the frame area, the frame adhesive layer is respectively connected with the second alignment parts of the two alignment layers, the material of the second alignment part comprises nanocrystalline, the nanocrystalline comprises heavy metal elements, and the reliability of the display panel is remarkably improved by doping nanocrystalline in the second alignment part.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel, a preparation method thereof and a display device.
Background
With the increasing requirements of people on display effects, high refresh rate, high resolution and extremely narrow frame become necessary elements of high-end electronic display products in the market, wherein for a liquid crystal display panel, the high refresh rate and the high resolution can be continuously broken through the design of thin film transistor driving and pixel arrangement, and the liquid crystal display panel needs to be composed into a liquid crystal box, so that frame glue is required to occupy a part of area outside a display area, and in order to achieve uniform display degree, an alignment layer is required to be larger than the range of the display area, so that the frame glue is further expanded, and the difficulty of realizing the narrow frame of the liquid crystal display panel is high.
At present, in order to reduce the occupied area of the alignment layer and the frame glue outside the display area to narrow the frame, a full-coverage coating mode of the alignment layer is developed, and in the process, on one hand, the frame glue is directly contacted with the alignment layer and is not contacted with the substrate, so that the bonding effect is reduced, and the bonding interface of the frame glue and the alignment layer is easy to peel; on the other hand, water vapor may enter the display panel along the edge of the alignment layer, resulting in poor display.
Disclosure of Invention
The application provides a display panel, a preparation method thereof and a display device, which can solve the problem of poor reliability of the display panel caused by water vapor invasion and film stripping.
In order to solve the above problems, in a first aspect, the present application provides a display panel including a display area and a bezel area located at a peripheral side of the display area, the display panel including:
a first substrate;
the second substrate is arranged in a pair with the first substrate;
two alignment layers, one of which is arranged on one side of the first substrate close to the second substrate, and the other one of which is arranged on one side of the second substrate close to the first substrate;
the frame adhesive layer is arranged between the two alignment layers and correspondingly arranged in the frame area;
any one of the alignment layers comprises a first alignment part and a second alignment part, the first alignment part covers the display area, the second alignment part is positioned in the frame area, the frame adhesive layer is respectively connected with the second alignment parts of the two alignment layers, the material of the second alignment part comprises nanocrystals, and the nanocrystals comprise heavy metal elements.
In the display panel provided by the embodiment of the application, the nanocrystals include the heavy metal element and the oxygen group element, and the heavy metal element is cadmium or lead.
In one embodiment of the present application, the nanocrystal includes a ligand, which is an oil phase ligand having 2-16 carbon atoms.
In an embodiment of the present application, the ligand includes pyridine.
In an embodiment of the present application, the ligand includes a diamine compound.
In the display panel provided by the embodiment of the application, in the second alignment portion, the mass percentage of the nanocrystals is 2wt% to 10wt%.
In an embodiment of the present application, the second alignment portion is configured in a shape of a Chinese character kou and is disposed around the display area.
In the display panel provided by the embodiment of the application, the distance between the edge of the second alignment part, which is close to the display area, and the display area is greater than 1000 micrometers.
In a second aspect, an embodiment of the present application provides a method for manufacturing a display panel, where the display panel includes a display area and a frame area located at a peripheral side of the display area, the method includes the following steps:
s10: providing a first substrate and a second substrate, and forming an alignment layer on the first substrate and the second substrate, wherein the alignment layer comprises a first alignment part and a second alignment part, the first alignment part covers the display area, the second alignment part is positioned in the frame area, the material of the second alignment part comprises nanocrystalline, and the nanocrystalline comprises heavy metal elements;
s20: and the alignment layers on the first substrate face the alignment layer pair group on the second substrate and are attached through a frame adhesive layer, and the frame adhesive layer is respectively connected with the second alignment parts of the two alignment layers.
In a third aspect, an embodiment of the present application provides a display device, including the display panel described above.
The beneficial effects are that: the application provides a display panel and a preparation method thereof as well as a display device, wherein the display panel comprises two alignment layers respectively arranged on a first substrate and a second substrate and a frame adhesive layer arranged between the two alignment layers, wherein the alignment layers are divided into two parts, a first alignment part covering a display area is used for carrying out conventional alignment, a second alignment part arranged in the frame area is used for being connected with the frame adhesive layer, and a nanocrystalline is doped in the second alignment part, the nanocrystalline comprises heavy metal elements, on one hand, heavy metal atoms in the nanocrystalline can form an action with oxygen atoms in water vapor to adsorb the water vapor, and prevent the water vapor in the environment from entering the display panel, and on the other hand, the heavy metal atoms in the nanocrystalline can be combined with functional groups such as amino groups and carboxyl groups and the like which are conventionally existing in the frame adhesive layer, so that the bonding force between the frame adhesive layer and the alignment layer is improved, and the risk of peeling the bonded interface of the frame adhesive layer and the alignment layer is reduced, namely, the reliability of the display panel is remarkably improved through doping the nanocrystalline in the second alignment part.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional structure of a display panel according to the prior art;
FIG. 2 is a schematic cross-sectional view of another display panel according to the prior art;
fig. 3 is a schematic cross-sectional structure of a display panel according to an embodiment of the present application;
fig. 4 is a schematic plan view of a display panel according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a text flow of a method for manufacturing a display panel according to an embodiment of the present application;
fig. 6A-6B are schematic structural flow diagrams of a method for manufacturing a display panel according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present application, the term "exemplary" is used to mean "serving as an example, instance, or illustration. Any embodiment described as "exemplary" in this disclosure is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the application. In the following description, details are set forth for purposes of explanation. It will be apparent to one of ordinary skill in the art that the present application may be practiced without these specific details. In other instances, well-known structures and processes have not been described in detail so as not to obscure the description of the application with unnecessary detail. Thus, the present application is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.
Firstly, referring to fig. 1, a conventional display panel in the prior art includes a first substrate 100 and a second substrate 200, an alignment layer 300 is disposed on each of the first substrate 100 and the second substrate 200, a frame glue layer 400 is disposed on a peripheral side of the alignment layer 300, the first substrate 100 and the second substrate 200 are bonded by the frame glue layer 400, in the display panel, in order to ensure uniformity of the alignment layer 300 in a display area, a setting range of the alignment layer 300 is slightly larger than that of the display area, and a sum of a width of the alignment layer exceeding the display area and a width of the frame glue layer 400 is a frame width of the display panel, which is wider, which is unfavorable for realization of a very narrow frame of the display panel;
therefore, in the prior art, the full coverage technique of the alignment layers is adopted to narrow the frame width of the display panel, referring to fig. 2, the two alignment layers 300 completely cover the first substrate 100 and the second substrate 200, the frame adhesive layer 400 is directly connected with the edges of the two alignment layers 300, which is beneficial to realizing a narrow frame, meanwhile, some drawbacks are brought about, on the one hand, the frame adhesive layer 400 is directly contacted with the alignment layers 300, the adhesive force between the frame adhesive layer 400 and the alignment layers 300 is generally smaller than the adhesive force between the frame adhesive layer 400 and the substrates, and the bonding interface between the frame adhesive layer 400 and the alignment layers 300 is easy to peel; on the other hand, water vapor may enter the display panel along the edge of the alignment layer 300, resulting in poor display.
Based on the above-mentioned problems, an embodiment of the present application provides a display panel, which is described in detail below with reference to fig. 3 and 4:
the display panel comprises a display area A1 and a frame area A2 positioned at the periphery of the display area A1, wherein the frame area A2 is generally arranged around the display area A1, the display panel comprises a first substrate 100 and a second substrate 200 which is arranged opposite to the first substrate 100, one of the first substrate 100 and the second substrate 200 is an array substrate, the other is a color film substrate, two alignment layers 300 are arranged between the first substrate 100 and the second substrate 200, the two alignment layers 300 have the same structure, one alignment layer 300 is arranged on the side surface of the first substrate 100 close to the second substrate 200, the other alignment layer 300 is arranged on the side surface of the second substrate 200 close to the first substrate 100, a frame adhesive layer 400 is arranged between the two alignment layers 300, the frame adhesive layer 400 is correspondingly arranged at the frame area A2, the frame adhesive layer 400 and the two alignment layers 300 are combined to form a sealed space, and a liquid crystal layer 500 is arranged in the sealed space;
any of the alignment layers 300 includes a first alignment portion 310 and a second alignment portion 320, the first alignment portion 310 covers the display area A1, the first alignment portion 310 is the same as an alignment layer in a conventional display panel in the prior art, typically a polyimide film, and is used for aligning liquid crystal molecules in the liquid crystal layer 500, the second alignment portion 320 is located in the frame area A2, and the second alignment portion 320 is similar to the first alignment portion 310 in material, except that a certain proportion of nanocrystals are doped in the second alignment portion 320, and the nanocrystals include heavy metal elements, that is, the second alignment portion 320 is typically a polyimide film doped with nanocrystals, and the frame adhesive layer 400 is respectively connected with the second alignment portions 320 of the two alignment layers 300.
In the display panel provided in this embodiment, the alignment layer 300 is divided into two parts, the first alignment portion 310 covering the display area A1 is used for performing conventional alignment, the second alignment portion 320 disposed in the frame area A2 is used for being connected with the frame glue layer 400, and the nanocrystals include heavy metal elements by doping a certain proportion of nanocrystals in the second alignment portion 320, so that on one hand, heavy metal atoms in the nanocrystals can form an action with oxygen atoms in water vapor to adsorb water vapor, thereby blocking water vapor in the environment from entering the interior of the display panel, and being used as a barrier for resisting water vapor invasion, so that the probability of poor display caused by water vapor invasion is greatly reduced, on the other hand, heavy metal atoms in the nanocrystals can be combined with conventionally existing functional groups in the frame glue layer 400, such as amino groups, carboxyl groups and the like to form coordination bonds, so that the bonding force between the frame glue layer 400 and the second alignment portion 320 is improved, and the risk of peeling the bonded interface between the frame glue layer 400 and the alignment layer 300 is reduced, that is, by doping nanocrystals in the second alignment portion 320, the reliability of the display panel is remarkably improved.
It is added that the nanocrystalline in the embodiment of the application is quantum dot, also called semiconductor nanocrystalline, is a zero-dimensional nanostructure composed of a small amount of atoms and having three dimensions of usually 1 to 100nm, is a conventional material in the display field, and is currently a conventional material in the display field, a light-emitting component is usually prepared by using a good light-emitting characteristic of the nanocrystalline material so as to achieve a good display effect.
In some embodiments, the nanocrystals include the heavy metal element and an oxygen group element, the heavy metal element being cadmium or lead, the oxygen group element being oxygen, sulfur, selenium, or tellurium, the nanocrystals may be cadmium selenide, cadmium telluride, cadmium sulfide, lead selenide, lead telluride, lead sulfide, or the like, as examples.
In some embodiments, since the surface activation energy of the nanocrystals is large, aggregation is easily generated, in order to uniformly disperse the nanocrystals in the second alignment part 320, the nanocrystals generally include ligands that form coordination bonds with heavy metal atoms and are formed on the surface of the nanocrystals, thereby reducing the activation energy of the nanocrystals to uniformly disperse them;
further, the main structure of the second alignment portion 320 is usually a polyimide film, and is formed by curing an alignment liquid, and the alignment liquid usually includes carboxylic dianhydride, diamine, an organic solvent, etc., so that the nanocrystals can be uniformly dispersed in the alignment liquid and thus can be uniformly dispersed in the second alignment portion 320 after curing, and the ligand is an oil phase ligand, i.e., a lipophilic ligand, which can be usually selected from alkanes, aromatic hydrocarbons, heteroarenes, or alkanes containing aryl, carboxyl, ester, ether, amine, amide, etc., or alkanes containing carboxyl, ester, ether, amine, amide, etc., or aromatic or heteroarenes containing groups such as carboxyl, ester, amine, amide, etc., and the ligand has a molecular weight that is not too large, and its carbon number is optimal from 2 to 16.
In some embodiments, the main structure of the second alignment portion 320 is usually a polyimide film, and the alignment solution is cured to form the polyimide, and the curing process includes dehydration cyclization (imidization) of the polyamic acid to form the polyimide, at this time, the ligand of the nanocrystal is set to include a certain amount of pyridine, and the pyridine is used to facilitate the cyclization reaction of the polyamic acid to proceed forward, so as to promote the cyclization rate of the polyimide in the second alignment portion 320, thereby promoting the mechanical properties of the polyimide in the second alignment portion 320, and further promoting the adhesion between the second alignment portion 320 and the first substrate 100 and the second substrate 200, so as to avoid the poor display caused by the peeling between the second alignment portion 320 and the first substrate 100 or the second substrate 200.
In some embodiments, the ligand of the nanocrystal is configured to include a certain amount of diamine compound, for example, ethylenediamine, p-phenylenediamine, m-phenylenediamine, etc., and the diamine compound is used as the ligand of the nanocrystal, so that the nanocrystal is uniformly dispersed in the second alignment portion 320, and can be involved in the cyclization reaction to the polyamic acid, so that the display defects such as panel afterimages caused by the dissociation into the display panel are not caused.
In some embodiments, the mass percentage of the nanocrystals in the second alignment portion 320 is 2wt% -10wt%, so that the second alignment portion 320 has a better effect of blocking water vapor intrusion, has a better adhesion with the sealant layer 400, and does not affect other properties of the second alignment portion 320.
In some embodiments, referring to fig. 4, the second alignment portion 320 is configured in a shape of a Chinese character kou and surrounds the display area A1, and generally the second alignment portion 320 is connected to the first alignment portion 310, i.e. the second alignment portion 320 is disposed around and at an outer edge of the first alignment portion 310.
Further, in order to ensure uniformity of the portion of the first alignment portion 310 in the display area A1, the setting range of the first alignment portion 310 needs to exceed the boundary of the display area A1 by a certain distance, and accordingly, the inner boundary of the second alignment portion 320, that is, the edge near the display area A1 needs to be spaced from the display area A1 by a certain distance, typically, the distance d between the edge of the second alignment portion 320 near the display area A1 and the display area A1 is greater than 1000 micrometers, and the edge of the second alignment portion 320 away from the display area A1 is flush with the edges of the color film substrates in the first substrate 100 and the second substrate 200.
In some embodiments, the front projection of the sealant layer 400 on the first substrate 100 coincides with the front projection of any one of the second alignment portions 320 on the first substrate 100, that is, the positions of the sealant layer 400 and the second alignment portions 320 are the same, so that the contact area between the sealant layer 400 and the second alignment portions 320 is maximized, and the adhesion between the sealant layer 400 and the second alignment portions 320 is further improved.
It should be noted that, in the embodiment of the display panel, only the above structure is described, and it is to be understood that, in addition to the above structure, any other necessary structure may be included in the display panel according to the embodiment of the present application, and the present application is not limited thereto.
In a second aspect, an embodiment of the present application provides a method for manufacturing a display panel in the foregoing embodiment, referring to fig. 5 and fig. 6A-6B, where the display panel includes a display area A1 and a frame area A2 located on a peripheral side of the display area A1, and the method includes the following steps:
s10: referring to fig. 6A, a first substrate 100 and a second substrate 200 are provided, and an alignment layer 300 is formed on the first substrate 100 and the second substrate 200, wherein the alignment layer 300 includes a first alignment portion 310 and a second alignment portion 320, the first alignment portion 310 covers the display area A1, the second alignment portion is located in the frame area, and a material of the second alignment portion includes a nanocrystal, and the nanocrystal includes a heavy metal element;
s20: referring to fig. 6B, the alignment layers 300 on the first substrate 100 are aligned to the alignment layers 300 on the second substrate 200 and are bonded by a sealant layer 400, and a liquid crystal layer 500 is formed in a space formed by enclosing the sealant layer 400 and the two alignment layers 300, and the sealant layer 400 is respectively connected with the second alignment portions 320 of the two alignment layers 300.
Specifically, in S10, the forming step of the alignment layer 300 includes:
providing a first alignment liquid and a second alignment liquid, wherein the first alignment liquid is conventional alignment liquid in the field, and the second alignment liquid is obtained by mixing the first alignment liquid with nanocrystalline;
coating forming an alignment liquid layer on the first substrate and the second substrate, wherein the coating forming the alignment liquid layer comprises forming a first alignment liquid part by using the first alignment liquid coating and forming a second alignment liquid part by using the second alignment liquid coating, wherein the forming positions of the first alignment liquid part and the second alignment liquid part are not shown, and referring to fig. 6A, the forming position of the first alignment liquid part is the same as the first alignment part 310, and the forming position of the second alignment liquid part is the same as the second alignment part 320;
and passing the alignment liquid layer through a curing process to form the alignment layer 300, specifically, the first alignment liquid portion is cured to form the first alignment portion 310, the second alignment liquid portion is cured to form the second alignment portion 320, and the curing process is thermal curing or photo curing.
Further, the alignment liquid layer may be formed by coating through an inkjet printing process, and in actual production, two types of printing nozzles may be disposed in the inkjet printing apparatus, including a first printing nozzle and a second printing nozzle, where the first printing nozzle is used for printing the first alignment liquid to form the first alignment liquid portion, and the second printing nozzle is used for printing the second alignment liquid to form the second alignment liquid portion.
In some embodiments, the content of the nanocrystals in the second alignment liquid is 1-5 mg/ml, specifically set according to the actual process requirements.
Another embodiment of the present application provides a display device, which includes the display panel provided in the foregoing embodiment, and the display device includes, but is not limited to, a mobile phone, a smart watch, a tablet computer, a notebook computer, a television, and the like.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of one embodiment that are not described in detail in the foregoing embodiments may be referred to in the foregoing detailed description of other embodiments, which are not described herein again.
The display panel, the preparation method thereof and the display device provided by the embodiment of the application are described in detail, and specific examples are applied to the description of the principle and the implementation mode of the application, and the description of the above examples is only used for helping to understand the method and the core idea of the application; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, the present description should not be construed as limiting the present application.
Claims (8)
1. A display panel, wherein the display panel includes a display area and a frame area located at a peripheral side of the display area, the display panel comprising:
a first substrate;
the second substrate is arranged in a pair with the first substrate;
two alignment layers, one of which is arranged on one side of the first substrate close to the second substrate, and the other one of which is arranged on one side of the second substrate close to the first substrate;
the frame adhesive layer is arranged between the two alignment layers and correspondingly arranged in the frame area, a closed space is formed by enclosing the frame adhesive layer and the two alignment layers, a liquid crystal layer is arranged in the closed space, and liquid crystal molecules are arranged in the liquid crystal layer;
any alignment layer comprises a first alignment part and a second alignment part, the first alignment part covers the display area, the second alignment part is positioned in the frame area, the first alignment part is a polyimide film, the first alignment part is used for aligning liquid crystal molecules in the liquid crystal layer, the second alignment part is a polyimide film doped with nanocrystalline, the frame adhesive layer is respectively connected with the second alignment parts of the two alignment layers, the nanocrystalline comprises heavy metal elements, the second alignment part is far away from the edge of the display area and the edge of a color film substrate in the first substrate and the second substrate, the orthographic projection of the frame adhesive layer on the first substrate coincides with the orthographic projection of any second alignment part on the first substrate, the second alignment part is in a square structure and surrounds the display area, and the nanocrystalline mass content in the second alignment part is 2wt% -10%.
2. The display panel according to claim 1, wherein the nanocrystals include the heavy metal element and an oxygen group element, and the heavy metal element is cadmium or lead.
3. The display panel according to claim 2, wherein the nanocrystal includes a ligand which is an oil phase ligand having 2 to 16 carbon atoms.
4. A display panel according to claim 3, wherein the ligand comprises pyridine.
5. A display panel according to claim 3, wherein the ligand comprises a diamine compound.
6. The display panel of claim 1, wherein an edge of the second alignment portion proximate the display area is greater than 1000 microns from the display area.
7. A method for manufacturing a display panel, wherein the display panel includes a display area and a frame area located at a peripheral side of the display area, the method comprising the steps of:
s10: providing a first substrate and a second substrate, and forming an alignment layer on the first substrate and the second substrate, wherein the alignment layer comprises a first alignment part and a second alignment part, the first alignment part covers the display area, the second alignment part is positioned in the frame area, the first alignment part is a polyimide film, the second alignment part is a polyimide film doped with nanocrystals, and the nanocrystals comprise heavy metal elements;
s20: the alignment layers on the first substrate face the alignment layers on the second substrate in a pair mode and are attached through a frame adhesive layer, the frame adhesive layer and the two alignment layers are enclosed to form an enclosed space, a liquid crystal layer is arranged in the enclosed space, liquid crystal molecules are arranged in the liquid crystal layer, the first alignment part is used for aligning the liquid crystal molecules in the liquid crystal layer, the frame adhesive layer is respectively connected with the second alignment parts of the two alignment layers, the edge of the second alignment part away from the display area is flush with the edges of the color film substrates in the first substrate and the second substrate, the orthographic projection of the frame adhesive layer on the first substrate coincides with the orthographic projection of any one second alignment part on the first substrate, the second alignment part is in a square structure and surrounds the display area, and the mass percentage of the nanocrystals in the second alignment part is 2-10wt%.
8. A display device comprising the display panel of any one of claims 1-6.
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| CN104297990A (en) * | 2014-10-22 | 2015-01-21 | 合肥鑫晟光电科技有限公司 | Colored film substrate and manufacturing method thereof, display panel and manufacturing method thereof, and display device |
| CN106206474A (en) * | 2016-08-31 | 2016-12-07 | 昆山国显光电有限公司 | A kind of encapsulating structure improving Frit packaging machinery intensity and method for packing thereof |
| CN108169961A (en) * | 2017-12-27 | 2018-06-15 | 深圳市华星光电技术有限公司 | Display panel and its manufacturing method |
| CN108780244A (en) * | 2016-03-10 | 2018-11-09 | 夏普株式会社 | Liquid crystal display device and alignment films |
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| KR20170113746A (en) * | 2016-03-24 | 2017-10-13 | 삼성디스플레이 주식회사 | Display device and fabrication method of the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104297990A (en) * | 2014-10-22 | 2015-01-21 | 合肥鑫晟光电科技有限公司 | Colored film substrate and manufacturing method thereof, display panel and manufacturing method thereof, and display device |
| CN108780244A (en) * | 2016-03-10 | 2018-11-09 | 夏普株式会社 | Liquid crystal display device and alignment films |
| CN106206474A (en) * | 2016-08-31 | 2016-12-07 | 昆山国显光电有限公司 | A kind of encapsulating structure improving Frit packaging machinery intensity and method for packing thereof |
| CN108169961A (en) * | 2017-12-27 | 2018-06-15 | 深圳市华星光电技术有限公司 | Display panel and its manufacturing method |
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