CN106773220B - Negative thermal expansion microsphere, preparation method thereof and liquid crystal display panel - Google Patents
Negative thermal expansion microsphere, preparation method thereof and liquid crystal display panel Download PDFInfo
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- CN106773220B CN106773220B CN201710085118.2A CN201710085118A CN106773220B CN 106773220 B CN106773220 B CN 106773220B CN 201710085118 A CN201710085118 A CN 201710085118A CN 106773220 B CN106773220 B CN 106773220B
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
Abstract
The embodiment of the invention provides a negative thermal expansion microsphere, a preparation method thereof and a liquid crystal display panel, relates to the technical field of display, and can be used for improving the range of LC Margin, reducing the occurrence of low-temperature bubbles and uneven gravity display and avoiding the problem of improving the clearing point of liquid crystal in order to ensure normal display. The liquid crystal display panel comprises an adjusting layer arranged on the surface of the array substrate, which is in contact with the liquid crystal layer, and/or on the surface of the opposite box substrate, which is in contact with the liquid crystal layer; the regulating layer comprises negative thermal expansion microspheres; the adjusting layer is arranged on the light-tight part of the display area and the non-display area inside the frame glue; the negative thermal expansion microsphere comprises a sealed outer shell and an inner core enclosed in the sealed outer shell; the sealed shell is made of negative thermal expansion material; the inner core comprises a heat storage body, and the heat storage body is made of a heat storage material; and the volume of the heat storage body in the process of absorbing heat is less than or equal to the volume of the sealing shell in the process of heat shrinkage.
Description
Technical Field
The invention relates to the technical field of display, in particular to negative thermal expansion microspheres, a preparation method thereof and a liquid crystal display panel.
Background
As shown in fig. 1, the liquid crystal display panel includes an array substrate 10 and a pair of substrates 20, a sealant 30 is disposed between the array substrate 10 and the pair of substrates 20 for sealing the liquid crystal display panel, and further includes a liquid crystal layer 40 and a Spacer (PS) 50 located within the sealant 30 and between the array substrate 10 and the pair of substrates 20. The liquid crystal display panel supports the cell thickness by the sealant 30, the spacer 50 and the liquid crystal layer 40.
In the manufacturing process, the LC Margin (Liquid Crystal Margin, Liquid Crystal filling amount) needs to be within a certain range, otherwise, since the density of the Liquid Crystal changes greatly with the temperature, on one hand, in a high-temperature environment, the thermal expansion coefficient of the Liquid Crystal layer 40 in the Liquid Crystal display panel is significantly greater than that of the spacer 50 and the sealant 30, so that the Liquid Crystal layer 40 plays a main supporting role, the supporting force borne by the spacer 50 is reduced, the fluidity of the Liquid Crystal layer 40 is increased, and the Liquid Crystal layer 40 causes excessive Liquid Crystal in a partial region of the Liquid Crystal display panel due to the self Gravity factor and the flow of the Liquid Crystal, thereby causing uneven Gravity display (Gravity Mura) at high temperature; on the other hand, in a Low Temperature environment, the liquid crystal layer 40 shrinks more than the spacer 50 and the sealant 30, which easily causes Low Temperature bubbles (Low Temperature bubbles) to appear in the display region of the liquid crystal display panel.
On the basis, when the temperature in the liquid crystal display panel is too high to exceed the clearing point (TNi) of the liquid crystal, abnormal display of the liquid crystal display panel is caused. At present, a method of increasing the clearing point of the liquid crystal is usually adopted to ensure the normal display of the liquid crystal display panel, however, the increasing of the clearing point of the liquid crystal sacrifices certain characteristics of the liquid crystal, such as increasing the response time, and the like, thereby limiting the selection of the liquid crystal type.
Disclosure of Invention
The embodiment of the invention provides a negative thermal expansion microsphere, a preparation method thereof and a liquid crystal display panel, which can improve the scope of LCMARgin, reduce the occurrence of low-temperature bubbles and uneven gravity display, and avoid the problem of improving the clearing point of liquid crystal for ensuring normal display.
In order to achieve the above purpose, the embodiment of the invention adopts the following technical scheme:
in a first aspect, there is provided a negative thermally expandable microsphere comprising a sealed outer shell and an inner core enclosed therein; the sealed housing is made of a negative thermal expansion material; the inner core comprises a heat storage body, and the heat storage body is made of a heat storage material; and the volume of the heat storage body in the process of absorbing heat is less than or equal to the volume of the sealing shell in the process of heat shrinkage.
Preferably, the heat storage material is a solid-liquid phase change heat storage material.
Optionally, the inner core is made of the heat storage material; a gap is formed between the inner core and the sealed shell.
Optionally, the inner core further comprises an inclusion, and the material of the inclusion is a material with a porous network structure; the heat storage body is adsorbed in a part of the porous network structure of the inclusion body; the enclosure fills the sealed enclosure.
Further preferably, the material having a porous network structure includes expanded porous graphite.
In a second aspect, there is provided a method for preparing negative thermal expansion microspheres, comprising: forming an inner core at least consisting of a heat storage body made of a heat storage material; enclosing the inner core within a sealed outer shell; the sealed housing is made of a negative thermal expansion material; and the volume of the heat storage body in the process of absorbing heat is less than or equal to the volume of the sealing shell in the process of heat shrinkage.
Optionally, the heat storage material is a solid-liquid phase change heat storage material; forming the negative thermal expansion microspheres, specifically comprising: forming an inner core made of a heat storage material, and coating the outer surface of the inner core with the sealing shell, so that the inner surface of the sealing shell is in contact with the outer surface of the inner core; and dissolving part of the inner core by using a solvent so that a gap is formed between the inner core and the sealed shell.
Optionally, the heat storage material is a solid-liquid phase change heat storage material; forming the negative thermal expansion microspheres, specifically comprising: heating the heat storage material to change the phase of the heat storage material into a liquid state, blending and adsorbing the liquid heat storage material and a material with a porous network structure, filtering and drying to prepare an inner core, wherein the inner core is composed of an inclusion of the material with the porous network structure and a heat storage body of the heat storage material, and the heat storage body is adsorbed in a part of the porous network structure of the inclusion; and coating the sealing shell on the outer surface of the inclusion body, so that the inner surface of the sealing shell is in contact with the outer surface of the inclusion body.
In a third aspect, a liquid crystal display panel is provided, which includes an array substrate, a pair of box substrates, and a sealant and a liquid crystal layer disposed therebetween; the liquid crystal display panel further comprises an adjusting layer arranged on the surface of the array substrate, which is in contact with the liquid crystal layer, and/or on the surface of the box aligning substrate, which is in contact with the liquid crystal layer; the regulating layer comprises the negative thermally expandable microspheres of the first aspect; the adjusting layer is arranged on the light-tight part of the display area and the non-display area inside the frame glue.
Preferably, the adjusting layer comprises transparent photoresist and the negative thermal expansion microspheres uniformly mixed in the transparent photoresist.
The embodiment of the invention provides a negative thermal expansion microsphere and a preparation method thereof, and a liquid crystal display panel, wherein an inner core comprising a heat storage body is adopted, and the heat storage body is made of a heat storage material, so that the heat storage body can absorb heat when the ambient temperature rises and release heat when the ambient temperature falls, and the ambient temperature is maintained in a certain range; through with the inner core endocyst in adopting the sealed shell of negative thermal expansion material, can make negative thermal expansion microballon have pyrocondensation cold expanding characteristic, wherein, through the volume that makes heat accumulation body at the volume less than or equal to sealed shell when the pyrocondensation of absorption heat in-process, can guarantee that heat accumulation body can not lead to heat accumulation body material to reveal in the form change of temperature variation in-process. Based on the above, when the negative thermal expansion microspheres are used in a liquid crystal display panel and the adjusting layer comprising the negative thermal expansion microspheres is arranged close to the liquid crystal layer, the temperature of the liquid crystal around the negative thermal expansion microspheres can be adjusted by the adjusting effect of the negative thermal expansion microspheres on the ambient temperature, and the expansion amount or contraction amount of the liquid crystal caused by the temperature is reduced; meanwhile, the thickness of the box can be increased by the thermal shrinkage and cold expansion characteristics of the negative thermal expansion microspheres when the liquid crystal expands, so that the supporting effect of the liquid crystal expansion on the thickness of the box is weakened; when the liquid crystal shrinks, the thickness of the box is reduced, so that even if the liquid crystal shrinks, the liquid crystal does not change greatly in the box; in conclusion, the range of the LC Margin can be enlarged, the occurrence of low-temperature bubbles and uneven gravity display can be reduced, the clearing point of the liquid crystal does not need to be increased, and the problem of liquid crystal property sacrifice caused by increasing the clearing point of the liquid crystal for ensuring normal display is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art LCD panel;
FIG. 2 is a first schematic structural diagram of a negative thermal expansion microsphere provided in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a negative thermal expansion microsphere according to an embodiment of the present invention;
FIG. 4 is a first schematic view of a process for preparing negative thermal expansion microspheres according to an embodiment of the present invention;
FIG. 5 is a second schematic view of a process for preparing negative thermal expansion microspheres according to an embodiment of the present invention;
fig. 6 is a first schematic structural diagram of an lcd panel according to an embodiment of the present invention;
fig. 7 is a second schematic structural diagram of a liquid crystal display panel according to an embodiment of the present invention;
fig. 8 is a schematic view of a process for manufacturing a liquid crystal display panel according to an embodiment of the invention.
Description of the drawings:
10-an array substrate; 20-pair of cassette substrates; 30-frame glue; 40-a liquid crystal layer; 50-spacer; 60-negative thermally expandable microspheres; 61-a sealed housing; 62-an inner core; 63-a heat storage body; 64-inclusion; 70-adjusting layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiments of the present invention provide negative thermally expandable microspheres 60, as shown in fig. 2-3, comprising a sealed outer shell 61 and an inner core 62 enclosed therein; the sealing shell 61 is made of negative thermal expansion material, the inner core 62 comprises a heat storage body 63, and the heat storage body 63 is made of heat storage material; the volume of the heat storage body 63 in the process of absorbing heat is less than or equal to the volume of the sealing shell 61 in the process of heat shrinkage.
Wherein the sealing shell 61 completely encases the inner core 62 therein.
First, the Negative Thermal Expansion (NTE) material refers to a compound having a Negative average linear expansion coefficient or a Negative bulk expansion coefficient in a certain temperature range. Specifically, the negative thermal expansion material is subjected to thermal shrinkage and cold expansion along with the change of temperature in a certain temperature range. For example, zirconium tungstate, carbon-nitrogen bond compounds, ferroelectric ceramics, anti-perovskite-structured manganese-nitrogen compounds, nanoparticles, and the like can be cited.
Secondly, the heat storage material may be a sensible heat storage material, or a latent heat storage material or a chemical reaction heat storage material, and is not particularly limited as long as it can absorb heat when the ambient temperature rises and release heat when the ambient temperature falls, so that the ambient temperature is maintained within a certain range.
The embodiment of the invention provides a negative thermal expansion microsphere 60, which adopts an inner core 62 comprising a heat storage body 63, wherein the heat storage body 63 is made of a heat storage material, so that the heat storage body can absorb heat when the ambient temperature is increased, and release heat when the ambient temperature is reduced, thereby maintaining the ambient temperature within a certain range; through with the inner core 62 endocyst in adopting the sealed shell 61 of negative thermal expansion material, can make negative thermal expansion microballon 60 have pyrocondensation cold expansion characteristic, wherein, through making heat accumulation body 63 be less than or equal to the volume of sealed shell 61 when the pyrocondensation in the volume of absorbing the heat in-process, can guarantee that heat accumulation body 63 can not lead to heat accumulation body 63 material to reveal in the change of temperature in-process form. Based on this, when the negative thermal expansion microspheres 60 are used in a liquid crystal display panel and the adjustment layer including the negative thermal expansion microspheres 60 is disposed close to the liquid crystal layer, the temperature of the liquid crystal around the negative thermal expansion microspheres 60 can be adjusted by the adjustment effect of the negative thermal expansion microspheres 60 on the ambient temperature, and the amount of expansion or contraction of the liquid crystal due to the temperature is reduced; meanwhile, through the thermal shrinkage and cold expansion characteristics of the negative thermal expansion microspheres 60, the thickness of the box can be increased when the liquid crystal expands, so that the supporting effect of the liquid crystal expansion on the thickness of the box is weakened; when the liquid crystal shrinks, the thickness of the box is reduced, so that even if the liquid crystal shrinks, the liquid crystal does not change greatly in the box; in conclusion, the range of the LC Margin can be enlarged, the occurrence of low-temperature bubbles and uneven gravity display can be reduced, the clearing point of the liquid crystal does not need to be increased, and the problem of liquid crystal property sacrifice caused by increasing the clearing point of the liquid crystal for ensuring normal display is avoided.
In view of the advantages of the solid-liquid phase change heat storage material, such as high heat storage density, approximately constant phase change process, and low cost, it is preferable that the heat storage material is a solid-liquid phase change heat storage material.
Wherein the solid-liquid phase change heat storage material comprises an inorganic solid-liquid phase change heat storage material and an organic solid-liquid phase change heat storage material.
Further, the solid-liquid phase change heat storage material may be organic paraffin. Wherein, the paraffin also has the advantages of non-corrosiveness, stable performance and the like
Based on the above, two specific structures of the negative thermal expansion microsphere 60 are provided:
in the first configuration, as shown in fig. 2, the inner core 62 is made of the heat storage material, and a space is provided between the inner core 62 and the sealing case 61.
The embodiment of the invention arranges the gap between the inner core 62 and the sealing shell 61, which can avoid the problem that the volume of the inner core 62 after phase change is too large, so that the sealing shell 61 is broken to cause the leakage of the material of the inner core 62 after phase change, thereby maintaining the stability of the negative thermal expansion microsphere 60.
In order to ensure that the volume of the inner core 62 after phase transformation does not cause the sealed shell 61 to break, the ratio of the volume of the inner core 62 to the volume of the sealed shell 61 is preferably 1:2 to 1: 3.
In a second structure, as shown in fig. 3, the inner core 62 further includes an envelope 64, and the material of the envelope 64 is a material having a porous network structure; the heat storage body 63 is adsorbed in a part of the porous network structure of the inclusion body 64; the enclosure 64 fills the sealed housing 61.
Fig. 3 illustrates an example of a state where the heat storage body 63 does not absorb heat, and when the heat absorbed by the heat storage body 63 changes to a liquid state, the liquid heat storage body diffuses in various directions.
In addition, since the structure of the negative thermal expansion microsphere 60 is a spherical structure, the inclusion 64 is also a spherical structure.
On this basis, the enclosure 64 fills the sealed housing 61, that is, the outer surface of the enclosure 64 is in full contact with the inner surface of the sealed housing 61, and the volume of the enclosure 64 is equal to the volume of the sealed housing 61.
Based on this, in order to ensure that the volume of the heat storage body 63 during heat absorption is equal to or less than the volume of the sealing shell 61 during heat shrinkage, that is, the volume of the heat storage body 63 during heat absorption is equal to or less than the volume of the inclusion 64 after compression, it is preferable that the ratio of the volume of the portion of the inclusion 64 not adsorbing the heat storage body 63 to the volume of the portion adsorbing the heat storage body 63 is 1:1 to 1:2 when the heat storage body 63 does not undergo a liquid phase change.
It should be noted that the specific material of the inclusion 64 is not limited, as long as the solid-liquid phase change heat storage material can be absorbed in the porous network structure of the inclusion 64 after being blended, absorbed, filtered and dried with the solid-liquid phase change heat storage material, and the inclusion 64 has certain flexibility and thermal conductivity. For example, the envelope 64 may be a polymer material or expanded porous graphite.
In view of the advantages of high thermal conductivity, low density, high chemical stability, and good compatibility with solid-liquid phase change heat storage materials, the expanded porous graphite is preferably a material having a porous network structure.
On the basis, the solid-liquid phase change heat storage material and the expanded porous graphite are blended and adsorbed, so that the inner core 62 has better heat conductivity.
The embodiment of the present invention further provides a method for manufacturing the negative thermal expansion microsphere 60, as shown in fig. 2 to 3, including: forming an inner core 62 at least composed of a heat storage body 63, the heat storage body 63 being made of a heat storage material; enclosing the inner core 62 within the sealed outer shell 61; the sealed case 61 is made of a negative thermal expansion material; the volume of the heat storage body 63 in the process of absorbing heat is less than or equal to the volume of the sealing shell 61 in the process of heat shrinkage.
The embodiment of the present invention provides a method for manufacturing the negative thermal expansion microsphere 60, which has the same technical effects as the negative thermal expansion microsphere 60 described above, and is not described herein again.
As shown in fig. 4, the negative thermal expansion microsphere 60 of the first structure is prepared by the following steps:
s10, forming an inner core 62 made of heat storage material, and covering the outer surface of the inner core 62 with the sealing shell 61, so that the inner surface of the sealing shell 61 contacts with the outer surface of the inner core 62; the heat storage material is a solid-liquid phase change heat storage material.
S11, dissolving part of the inner core 62 with a solvent, so that a gap is formed between the inner core 62 and the sealed outer shell 61.
When a solvent is adopted to dissolve part of the inner core 62, the first microspheres obtained after the outer surface of the inner core 62 is coated with the sealing shell 61 are placed in the solvent capable of permeating the sealing shell 61, so that the solvent permeates into the sealing shell 61, and part of the inner core 62 is dissolved to obtain second microspheres; thereafter, the second microspheres were taken out to allow the solvent in the second microspheres to bleed out, to obtain the negative thermally expandable microspheres 60.
In addition, the volume of the inner core 62 can be controlled by controlling the time that the first microspheres are placed in the solvent.
As shown in fig. 5, the negative thermal expansion microsphere 60 of the second structure is prepared by the following steps:
s20, heating the heat storage material to change the phase of the heat storage material into liquid, blending and adsorbing the liquid heat storage material and the material with the porous network structure, filtering and drying to prepare the inner core 62; the inner core 62 is composed of an inclusion 64 made of a material with a porous network structure and a heat storage body 63 made of a heat storage material, wherein the heat storage body 63 is adsorbed in a part of the porous network structure of the inclusion 64; the heat storage material is a solid-liquid phase change heat storage material.
Here, when the heating phase of the heat storage body 63 is changed to a liquid state, the liquid heat storage body 63 is filled in the porous mesh structure of the envelope 64, and when the liquid heat storage body 63 is changed to a solid state by the drying phase, the volume of the heat storage body 63 is shrunk, so that the solid heat storage body 63 located at the center of the porous mesh structure of the envelope 64 as shown in fig. 3, for example, is obtained.
It will be appreciated by those skilled in the art that the melting points of the different solid-liquid phase change heat storage materials will be different and therefore the temperature at which they are heated will be different for different solid-liquid phase change heat storage materials. When the solid-liquid phase change heat storage material is paraffin, the heating temperature may be 57 to 80 ℃, for example, 60 ℃.
S21, the outer surface of the enclosure 64 is covered with the sealing case 61, and the inner surface of the sealing case 61 is brought into contact with the outer surface of the enclosure 64.
An embodiment of the present invention provides a liquid crystal display panel, as shown in fig. 6-7, including an array substrate 10, a pair of box substrates 20, and a sealant 30 and a liquid crystal layer 40 disposed therebetween; the liquid crystal display further comprises an adjusting layer 70 arranged on the surface of the array substrate 10, which is in contact with the liquid crystal layer 40, and/or on the surface of the opposite box substrate 20, which is in contact with the liquid crystal layer 40; the regulation layer 70 includes the negative thermal expansion microsphere 60 described above; the adjusting layer 70 is disposed in the opaque portion of the display region and the non-display region within the sealant 30.
The adjusting layer 70 may be disposed on the array substrate 10 and/or the opaque portion of the display area on the opposite-box substrate 20 except for the portion corresponding to the spacer 50, and of course, may also be disposed on the surface of the spacer 50 contacting the liquid crystal layer 40.
The invention provides a liquid crystal display panel, through setting up the regulating layer 70 comprising negative thermal expansion microballoons 60 on the surface that the array base plate 10 contacts with liquid crystal layer 40, or to the surface that the box base plate 20 contacts with liquid crystal layer 40, on the basis of regulating the function to ambient temperature of the negative thermal expansion microballoons 60, can regulate the temperature of its surrounding liquid crystal, reduce the liquid crystal swelling amount or shrinkage amount caused by temperature, meanwhile, on the basis of the hot shrinkage and cold swelling characteristic of the negative thermal expansion microballoons 60, can make the box thickness increase while the liquid crystal expands, in order to weaken the supporting function of the liquid crystal expansion to the box thickness; when the liquid crystal shrinks, the thickness of the box is reduced, so that even if the liquid crystal shrinks, the liquid crystal does not change greatly in the box; in conclusion, the range of the LC Margin can be enlarged, the occurrence of low-temperature bubbles and uneven gravity display can be reduced, the clearing point of the liquid crystal does not need to be increased, and the problem of liquid crystal property sacrifice caused by increasing the clearing point of the liquid crystal for ensuring normal display is avoided.
Preferably, the adjustment layer 70 includes a transparent photoresist and the negative thermal expansion microspheres 60 uniformly mixed in the transparent photoresist.
In this case, the negative thermal expansion microsphere 60 is mixed in the transparent photoresist, and the adjustment layer 70 is prepared by exposure and development, and the preparation process is simple.
Based on the above, as shown in fig. 8, a method for manufacturing a liquid crystal display panel is provided, which includes the following specific steps:
s30, spacers 50 are formed on the opaque portions of the box substrates 20.
Specifically, a spacer film, which may be a photosensitive resin material, is deposited on the opposite-to-case substrate 20 by a chemical vapor deposition method, and then the spacers 50 are formed on the opaque portions of the display area of the opposite-to-case substrate 20 by a patterning process such as exposure and development using a mask.
S31, on the basis of completing S30, alignment layers are formed on the array substrate 10 and the cartridge substrate 20.
Specifically, the array substrate 10 and the cassette substrate 20 may be cleaned first, foreign particles on the array substrate 10 and the cassette substrate 20 are removed, alignment films are formed on the cleaned array substrate 10 and the cleaned cassette substrate 20 by printing, and the alignment films are subjected to alignment treatment by an alignment layer rubbing process to obtain the alignment layer.
S32, forming the sealant 30 on the non-display area of the cartridge substrate 10 after S31 is completed.
S33, on the basis of completing S32, coating a transparent photoresist containing the negative thermal expansion microspheres 60 on the alignment layer of the opposing box substrate 20, and obtaining the adjustment layer 70 located in the non-display area and the opaque part of the display area within the rubber frame 30 of the opposing box substrate 20 by exposing, developing, cleaning and drying.
Specifically, the adjustment layer 70 of the opaque portion of the display area is located at the portion of the opaque portion of the display area other than the spacer 50, and further may be located on the side surface of the spacer 50.
S34, after S33 is completed, the liquid crystal layer 40 is formed on the opposing substrate 20.
Specifically, the liquid crystal layer 40 may be formed by dropping liquid crystal onto the alignment layer of the opposing cell substrate 20 by a One Drop Filling (ODF) technique.
S35, after S34 is completed, the array substrate 10 and the opposing cassette substrate 20 are bonded to each other in a vacuum state with high precision, and the liquid crystal display panel is obtained.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. The negative thermal expansion microsphere is characterized by comprising a sealed outer shell and an inner core enclosed in the sealed outer shell; the sealed housing is made of a negative thermal expansion material; the inner core comprises a heat storage body, and the heat storage body is made of a heat storage material;
wherein the volume of the heat storage body in the process of absorbing heat is less than or equal to the volume of the sealing shell in the process of heat shrinkage;
the heat storage material is a solid-liquid phase change heat storage material;
the inner core is made of the heat storage material; a gap is formed between the inner core and the sealing shell;
the ratio of the volume of the inner core to the volume of the sealing shell is 1: 2-1: 3.
2. A preparation method of negative thermal expansion microspheres is characterized by comprising the following steps:
forming an inner core at least consisting of a heat storage body made of a heat storage material;
enclosing the inner core within a sealed outer shell; the sealed housing is made of a negative thermal expansion material;
wherein the volume of the heat storage body in the process of absorbing heat is less than or equal to the volume of the sealing shell in the process of heat shrinkage;
the heat storage material is a solid-liquid phase change heat storage material;
the inner core is made of the heat storage material; a gap is formed between the inner core and the sealing shell;
the ratio of the volume of the inner core to the volume of the sealing shell is 1: 2-1: 3.
3. The production method according to claim 2, wherein the heat storage material is a solid-liquid phase change heat storage material;
forming the negative thermal expansion microspheres, specifically comprising:
forming an inner core made of a heat storage material, and coating the outer surface of the inner core with the sealing shell, so that the inner surface of the sealing shell is in contact with the outer surface of the inner core;
and dissolving part of the inner core by using a solvent so that a gap is formed between the inner core and the sealed shell.
4. A liquid crystal display panel comprises an array substrate, a box aligning substrate, and a frame glue and a liquid crystal layer arranged between the array substrate and the box aligning substrate; the liquid crystal display device is characterized by further comprising an adjusting layer arranged on the surface of the array substrate, which is in contact with the liquid crystal layer, and/or on the surface of the box aligning substrate, which is in contact with the liquid crystal layer; the regulating layer comprises the negative thermally expandable microspheres of claim 1;
the adjusting layer is arranged on the light-tight part of the display area and the non-display area inside the frame glue.
5. The liquid crystal display panel according to claim 4, wherein the adjustment layer comprises a transparent photoresist and the negative thermal expansion microsphere uniformly mixed in the transparent photoresist.
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| CN112327543B (en) * | 2020-11-05 | 2022-04-01 | Tcl华星光电技术有限公司 | Liquid crystal display panel, preparation method thereof and liquid crystal display device |
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