CN115407566A

CN115407566A - Display panel, terminal, photoresist and preparation method of display panel

Info

Publication number: CN115407566A
Application number: CN202211041723.7A
Authority: CN
Inventors: 余乐盛
Original assignee: TCL China Star Optoelectronics Technology Co Ltd
Current assignee: TCL China Star Optoelectronics Technology Co Ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-11-29
Anticipated expiration: 2042-08-29
Also published as: CN115407566B

Abstract

The application relates to a display panel, a terminal, a photoresist and a preparation method of the display panel, wherein the display panel comprises a first substrate, a second substrate, a liquid crystal and a plurality of photoetching spacers, wherein the liquid crystal is positioned between the first substrate and the second substrate, the first substrate and the second substrate are oppositely arranged, the liquid crystal is filled between the photoetching spacers, the liquid crystal comprises a plurality of liquid crystal molecules, and the preparation method comprises the following steps: the photo-lithographic spacer includes a plurality of aerogel particles, and a distance between the aerogel particles is at least greater than a size of each of the liquid crystal molecules. According to the liquid crystal display panel, the photoetching type spacer containing a plurality of aerogel particles is manufactured, the distance between the aerogel particles is at least larger than the size of each liquid crystal molecule, the phenomenon of uneven gravity of the display panel at high temperature can be improved, bubbles generated at low temperature are improved, the elastic recovery rate is improved, the surface pressure capability is enhanced, and the retaining wall effect of the spacer is improved.

Description

Display panel, terminal, photoresist and preparation method of display panel

Technical Field

The application relates to the technical field of display, in particular to a display panel, a terminal, photoresist and a preparation method of the display panel.

Background

In the early development of Liquid Crystal Display (LCD) technology, a Ball Spacer (Ball Spacer) is generally dispersed on one side of a Liquid Crystal Display panel by a spraying method to control the gap and uniformity in a cell of the LCD. The method is simple to operate, but cannot solve the defects of random distribution, easy aggregation and the like of the spherical spacers. For this reason, the related art employs a Photo Spacer (PS) of a column shape instead of the spherical spacer. The occurrence of the photoetching spacer avoids the problems of uneven thickness, bad point formation, color change and the like easily caused by the spherical spacer under the conditions of normal temperature and the like. The photo spacers may be formed in a pillar shape on one side of the substrate by a conventional photolithography process, and may have different heights, openings, and shapes. Under the combined action of the Main spacer (Main PS) and the Sub spacer (Sub PS) forming a certain step Difference (DC), the liquid crystal display can not only maintain stable and uniform spacing in the box, but also can adapt to environmental changes under a certain degree.

However, in the related art, the liquid crystal display panel is prone to liquid crystal expansion under high temperature conditions, and the supporting force of the photolithography spacer is insufficient, so that the panel has a phenomenon of uneven gravity (Mura) at high temperature; the liquid crystal display panel is easy to shrink liquid crystal under low temperature conditions, and the photoetching spacers are easy to shrink to cause bubbles (bubbles) to appear on the panel under low temperature vacuum.

Furthermore, in the related art, the photolithographic spacer structure corresponding to a single photoresist can obtain better flexibility when the size is smaller, but the elastic recovery rate is poorer. This is in contradiction to the other required surface pressure capability of the panel. In other words, a larger size can achieve better face pressure capability. In addition, the high temperature of the environment is often accompanied by high humidity, and the entering of moisture will cause the problems of blackening of the panel display, etc., thereby causing the poor effect of the conventional photo-etching spacer.

Disclosure of Invention

In view of the above, the present application provides a display panel, a terminal, a photoresist and a method for manufacturing the display panel, which can improve the phenomenon of uneven gravity of the display panel at a high temperature, improve bubbles generated at a low temperature, improve elastic recovery rate, enhance surface pressure capability and improve the retaining wall effect of a spacer.

According to an aspect of the present application, there is provided a display panel including a first substrate, a second substrate, a liquid crystal located between the first substrate and the second substrate, and a plurality of photo-etching spacers, the first substrate and the second substrate being disposed opposite to each other, the liquid crystal being filled between the photo-etching spacers, the liquid crystal including a plurality of liquid crystal molecules, wherein: the photolithography type spacer includes a plurality of aerogel particles, and a distance between the aerogel particles is at least larger than a size of each liquid crystal molecule.

Further, the plurality of aerogel particles are uniformly dispersed in the photo-lithographically spacer, wherein: the plurality of aerogel particles are hydrophobic aerogel particles containing silicon dioxide.

Further, the distance between the aerogel particles is between 20 nm and 70 nm.

Further, the plurality of photolithography-type spacers include two types of main spacers and sub spacers, and the display panel further includes a first electrode layer disposed on a side of the first substrate facing the second substrate, wherein: the main spacer and the auxiliary spacer are both disposed on the first electrode layer, and the heights of the auxiliary spacers are both smaller than the height of the main spacer.

Further, the display panel further includes a second electrode layer disposed on a side of the second substrate facing the first substrate, wherein: the main spacer is connected to the second electrode layer, and the sub spacer is separated from the second electrode layer.

Further, at least one of the plurality of lithographic spacers is a primary spacer and at least one of the lithographic spacers is a secondary spacer.

Further, the plurality of lithographic spacers are all main spacers.

According to another aspect of the present application, there is provided a terminal including a terminal body and the display panel, the terminal body being connected with the display panel.

According to another aspect of the present application, there is provided a photoresist for preparing the photoresist spacer, the photoresist comprising a plurality of components in parts by weight, wherein: 5-50 parts of polymer, 0.1-20 parts of photoinitiator, 3-40 parts of active monomer, 0.1-5 parts of flatting agent, 45-90 parts of solvent, 0.1-10 parts of adhesive and 10-60 parts of aerogel particles.

According to still another aspect of the present application, there is provided a method of manufacturing a display panel for manufacturing the display panel, the method including: dissolving organic silicon into a preset solvent, and uniformly stirring to ensure that the organic silicon fully reacts under the action of the solvent and a catalyst to obtain a reaction solution; spraying air into the reaction liquid through a high-pressure nozzle for granulation to obtain a plurality of wet balls; collecting a plurality of wet balls obtained after granulation, and performing organic matter replacement after heating and curing treatment to obtain an intermediate material; processing the intermediate material in a vacuum drying mode to obtain a plurality of silica aerogel particles with nanometer apertures; modifying the surface of the plurality of silica aerogel particles to form target hydrophobic groups, thereby forming a plurality of hydrophobic aerogel particles; mixing the hydrophobic aerogel particles with a preset polymer, a photoinitiator, an active monomer, a leveling agent, a solvent and an adhesive to obtain a photoresist; preparing the photo-etching type spacer based on the photoresist; preparing the display panel based on the photo-etching type spacer.

Through the photoetching spacer containing a plurality of aerogel particles, the distance between the aerogel particles is at least larger than the size of each liquid crystal molecule, the phenomenon of uneven gravity of the display panel at high temperature can be improved according to the aspects of the application, bubbles generated at low temperature are improved, the elastic recovery rate is improved, the surface pressure capability is enhanced, and the retaining wall effect of the spacer is improved.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 illustrates a schematic view of a related art display panel in a normal temperature environment.

Fig. 2 illustrates a schematic view of a related art display panel in a high temperature environment.

Fig. 3 shows a schematic view of a related art display panel in a low temperature environment.

Fig. 4 shows a schematic view of a display panel in an ambient temperature environment according to an embodiment of the present application.

Fig. 5 shows a schematic diagram of a display panel in a high temperature environment according to an embodiment of the present application.

Fig. 6 shows a schematic diagram of a display panel in a low-temperature environment according to an embodiment of the present application.

Fig. 7 is a schematic view of another display panel according to an embodiment of the present application in a normal temperature environment.

Fig. 8 is a schematic view of another display panel according to an embodiment of the present disclosure in a high temperature environment.

Fig. 9 is a schematic view of another display panel according to an embodiment of the present disclosure in a low temperature environment.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, 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 application.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically, electrically or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

As shown in fig. 1, in the related art, the liquid crystal display panel includes a color filter substrate 11, a color stack layer 12, a first electrode layer 13, a liquid crystal layer 14, a second electrode layer 15, and an array substrate 16, which are sequentially stacked. The color filter substrate 11 is disposed opposite to the array substrate 16. A backlight module may be further disposed on a side of the array substrate 16 away from the color filter substrate 11, so as to provide a backlight source. In fig. 1, the light emitting path of the backlight source may be vertically emitted from the array substrate 16 side to the color filter substrate 11 side.

The color composition layer 12 may be provided with a red color composition unit 121, a green color composition unit 122, and a blue color composition unit 123 at intervals. The first electrode layer 13 and the second electrode layer 15 may be transparent Indium Tin Oxide (ITO) to prevent the backlight from being shielded. An array of black matrixes 17 may be further disposed between the second electrode layer 15 and the array substrate 16. A main spacer and a sub spacer are provided between the first electrode layer 13 and the second electrode layer 15. For example, in fig. 1, the sub spacer 141 is provided corresponding to the red color set unit 121, the sub spacer 142 is provided corresponding to the green color set unit 122, and the main spacer 143 is provided corresponding to the blue color set unit 123. Under normal conditions, the liquid crystal panel cannot be interfered by external force, and the main spacer plays a supporting role at the moment; when the liquid crystal panel is squeezed by touch, wiping and other actions, the auxiliary spacer plays an auxiliary supporting effect at the moment, so that the panel is buffered under the action of external force.

The structure shown in fig. 1 is formed based on a COA (CF on Array, COA) model and a POA (PS on Array, POA) technology model. The COA model manufactures color resists (CFs) on an Array substrate (i.e., array), and the POA model manufactures photo-lithographic spacers on an Array substrate. In fig. 1, there are two types of lithographic spacers: a primary spacer and a secondary spacer. In the current liquid crystal injection process, in order to increase the upper and lower floating range of the liquid crystal to be dropped, i.e., the process Margin (LC Margin), a certain height difference is generally formed between the main spacer and the sub spacer. Normally, in order to meet the process margin requirement, the lithographic spacer also needs to have good scalability and elastic Recovery (RR).

Under a normal temperature environment (e.g., room temperature), the liquid crystals are disposed in the gaps between the different spacers and arranged in a certain order. The photolithography spacer in fig. 1 can maintain a certain liquid crystal cell thickness between the color film substrate 11 and the array substrate 16, and plays a role in supporting and buffering.

As shown in fig. 2, in a high temperature environment, liquid crystal molecules expand, and a part of the liquid crystal molecules (for example, the liquid crystal molecules 21) overflows to a peripheral gap, which changes a liquid crystal cell thickness between the color film substrate 11 and the array substrate 16, and affects functions of the main spacer and the auxiliary spacer, thereby affecting uniformity of the liquid crystal display panel.

Fig. 3 shows a schematic diagram of a related art display panel in a low temperature environment.

As shown in fig. 3, in a low temperature environment, the liquid crystal molecules shrink, causing bubbles 31 to appear at the original liquid crystal sites. The bubble 31 is located above the liquid crystal 14, which also changes the thickness of the liquid crystal cell between the color film substrate 11 and the array substrate 16, and affects the functions of the main spacer and the auxiliary spacer, thereby affecting the uniformity of the liquid crystal display panel.

In view of the foregoing, the present application provides a display panel, including a first substrate, a second substrate, a liquid crystal disposed between the first substrate and the second substrate, and a plurality of photo-etching spacers, wherein the first substrate and the second substrate are disposed opposite to each other, the liquid crystal is filled between the photo-etching spacers, and the liquid crystal includes a plurality of liquid crystal molecules, wherein: the photo-lithographic spacer includes a plurality of aerogel particles, and a distance between the aerogel particles is at least greater than a size of each of the liquid crystal molecules.

By manufacturing the photoetching type spacer containing a plurality of aerogel particles and enabling the distance between the aerogel particles to be at least larger than the size of each liquid crystal molecule, the phenomenon of uneven gravity of the display panel at high temperature can be improved, bubbles generated at low temperature can be improved, the elastic recovery rate is improved, the surface pressure capability is enhanced, and the retaining wall effect of the spacer is improved.

As shown in fig. 4, the display panel according to the embodiment of the present disclosure may include a first substrate, a second substrate, a liquid crystal between the first substrate and the second substrate, and a plurality of photolithography spacers. The first substrate may be a color filter substrate 11, and the second substrate may be an array substrate 16. In fig. 1, the color set layer 12, the first electrode layer 13, the second electrode layer 15 and the black matrix 17 can be arranged as described with reference to fig. 1.

Unlike fig. 1, in the present application, the main spacers 41 and the sub spacers 42 of fig. 4 may be filled or doped with aerogel particles. For example, aerogel particles 421 and aerogel particles 422 can be disposed in the secondary spacers 42. Since the distance between the aerogel particles is at least greater than the size of the liquid crystal molecules, the space between the

aerogel particles

421 and 422 is sufficient to accommodate the liquid crystal molecules near the sub-spacers 42 to enter and exit the sub-spacers, so as to improve the uniformity of the display panel.

Wherein a distance between the aerogel particles may refer to a shortest distance between outer surfaces of the aerogel particles. Of course, the distance between different aerogel particles may vary. It is to be understood that the present application is not limited to the distance between each of the aerogel particles.

Further, the plurality of aerogel particles are uniformly dispersed in the photo-lithographically spacer, wherein: the plurality of aerogel particles are hydrophobic aerogel particles containing silicon dioxide. In practical applications, the plurality of aerogel particles may also be arranged according to a certain rule (for example, the density is uniform), or the plurality of aerogel particles may be arranged in a disorderly manner as long as it can be ensured that the gaps between the aerogel particles and the adjacent aerogel particles can accommodate the liquid crystal molecules nearby to enter and exit, and the application is not limited to the arrangement mode of the aerogel particles.

Further, the distance between the aerogel particles is between 20 nanometers and 70 nanometers. The distance between different aerogel particles in the embodiments of the present application may be a distance between the surface of the aerogel particle and the surface of another aerogel particle. Each of the aerogel particles can be spherical. Of course, the distance between the aerogel particles can also be measured by the distance between the center of the aerogel particle and the center of other aerogel particles, and the expression of the distance is not limited in the present application.

For example, the size of each of the liquid crystal molecules according to the embodiment of the present application may be the maximum value of the diameter of each of the liquid crystal molecules.

Further, the plurality of photolithography-type spacers include two types of main spacers and sub spacers, and the display panel further includes a first electrode layer disposed on a side of the first substrate facing the second substrate, wherein: the main spacer and the auxiliary spacer are both disposed on the first electrode layer, and the heights of the auxiliary spacers are both smaller than the height of the main spacer. The display panel further comprises a second electrode layer disposed on one side of the second substrate facing the first substrate, wherein: the main spacer is connected to the second electrode layer, and the sub spacer is separated from the second electrode layer.

Referring to fig. 4, the display panel further includes a first electrode layer 13 and a second electrode layer 15, the first electrode layer 13 is disposed on the color stack layer 12, and the second electrode layer 15 is disposed on a side of the array substrate 16 facing the color filter substrate 11. A main spacer 41 and a sub spacer 42 are disposed between the first electrode layer 13 and the second electrode layer 15, the main spacer 41 may be in contact with the first electrode layer 13 and the second electrode layer 15, respectively, and the sub spacer 42 may be in contact with the first electrode layer 13 and may be spaced apart from the second electrode layer 15. The height of the subsidiary spacer 42 is smaller than that of the main spacer 41.

As shown in fig. 4, at least one of the plurality of lithographic spacers is a main spacer, and at least one of the lithographic spacers is a sub spacer, that is, the number of the main spacers and the sub spacers in the embodiments of the present application may be one or more. It is to be understood that the present application is not limited to the number of primary and secondary spacers.

For example, as shown in fig. 5, in a high-temperature environment, liquid crystal molecules in the liquid crystal 14 expand, and since a distance between the aerogel particles in the main spacer 41 is at least greater than a size of each of the liquid crystal molecules, a portion of the liquid crystal molecules (e.g., the liquid crystal molecules 511) can overflow from the liquid crystal 14 into the main spacer 41, so that a distance between the color filter substrate 11 and the array substrate 16 is kept unchanged, and a phenomenon of gravity non-uniformity of the display panel at a high temperature is improved.

Illustratively, as shown in fig. 6, liquid crystal molecules in the liquid crystal 14 shrink under a low temperature environment, and at this time, the liquid crystal molecules 611 remaining in the main spacer 41 may overflow to a position of a bubble generated at the top of the liquid crystal 14, thereby filling the bubble generated due to the liquid crystal shrinking under the low temperature environment. The liquid crystal molecules in the main spacer 41 may be doped in advance, or may be generated by performing a high temperature test. In addition, the main spacer can also be designed with other micro fillers to fill up the bubbles generated by the liquid crystal shrinkage in the low-temperature environment. Alternatively, the main spacers 41 may be filled with aerogel particles without filling liquid crystal or other micro-fillers, and since the aerogel itself may shrink in a low temperature environment, the generation of bubbles in the liquid crystal can also be reduced.

Further, the plurality of lithographic spacers are all main spacers.

Illustratively, as shown in fig. 7, the lithographic type spacers in the present application, such as main spacer 71, main spacer 72, and main spacer 73, may all be main spacers. That is, the spacers in the present application may have the same height and may be in contact with the first electrode layer 13 and the second electrode layer 15, respectively. Fig. 7 can improve the adaptability of the spacer to high and low temperature environments, compared to fig. 4. That is, in the present application, when the capability of controlling the adjustment using the liquid crystal reaches a certain degree, the main spacers and the sub spacers may not be simultaneously manufactured, and all the spacers may be set as the main spacers.

For example, as shown in fig. 8, in a high-temperature environment, liquid crystal molecules in the liquid crystal 14 expand, and since a distance between the aerogel particles in the main spacer 73 is at least greater than a size of each of the liquid crystal molecules, a portion of the liquid crystal molecules (e.g., the liquid crystal molecules 711) can overflow from the liquid crystal 14 into the main spacer 73, so that a distance between the color filter substrate 11 and the array substrate 16 is kept unchanged, and a phenomenon of gravity non-uniformity of the display panel at a high temperature is improved.

Illustratively, as shown in fig. 9, liquid crystal molecules in the liquid crystal 14 shrink under a low temperature environment, and at this time, the liquid crystal molecules 911 left in the main spacer 73 may overflow to a position of a bubble generated at the top of the liquid crystal 14, thereby filling the bubble generated due to the liquid crystal shrinking under the low temperature environment. Similar to fig. 6, the liquid crystal molecules in the main spacer 73 in fig. 9 may be pre-doped or may be generated by performing a high temperature test. In addition, the main spacer can also be designed with other micro fillers to fill up the bubbles generated by the liquid crystal shrinkage in the low-temperature environment. Alternatively, the main spacers 73 may be filled with aerogel particles, not with liquid crystals or other micro fillers, since the aerogel particles may shrink itself in a low temperature environment, thereby also reducing the generation of bubbles in the liquid crystals.

According to another aspect of the present application, there is provided a terminal including a terminal body and the display panel, the terminal body being connected with the display panel. The terminal comprises the display device. The terminal may include an in-vehicle device, a mobile phone, a notebook, a tablet, a commercial device, a wearable device display device, a portable display device, and the like. It is to be understood that the present application is not limited to such terminals.

According to another aspect of the present application, there is provided a photoresist for preparing the photoresist-based spacer, the photoresist comprising a plurality of components in parts by weight, wherein: 5-50 parts of polymer, 0.1-20 parts of photoinitiator, 3-40 parts of active monomer, 0.1-5 parts of flatting agent, 45-90 parts of solvent, 0.1-10 parts of adhesive and 10-60 parts of aerogel particles.

It should be noted that the photoresist in this application is distinguished from the "photoresist" commonly used for etching in the yellow light process. The photoresist in this application can be used as a raw material to prepare parts such as spacers, black matrices, color set cells, etc.

Among them, the polymer a may be a polymer resin. The polymer resin may have two co-blocks, a polyurethane segment A-1 containing an acid group and a segment A-2 containing a vinyl group.

The photoinitiator B may be a conventional triazine, acetophenone, imidazole, benzoin, or the like, as long as it can be used for photoinitiated polymerization.

The reactive monomer C may be a vinyl monomer having at least two or more reactive functional groups, and a conventional difunctional or higher-functional monomer may be used. Specifically, the reactive monomer C may be one or a mixture of several acrylic monomers containing reactive groups, and the acrylic monomers may refer to acrylic monomers containing two or more functional groups, more preferably acrylic monomers containing 3 to 6 functional groups, and preferably dipentaerythritol hexaacrylate (DPHA).

The leveling agent D can be an organosilicon leveling agent, a fluorine leveling agent, an organic modified siloxane leveling agent or an acrylate leveling agent, and is preferably an acrylate leveling agent.

The solvent E can be conventional alcohols, esters, ethers complex solvents and the like. For example, n-butanol, ethyl acetate, butyl acetate, ethyl lactate, butyl lactate, anisole, benzyl alcohol, ethylene glycol ethyl ether acetate, ethylene glycol methyl ether acetate, propylene glycol methyl ether acetate, and the like.

The binder F may be polyvinyl alcohol, synthetic resin, thermoplastic resin, or the like.

According to still another aspect of the present application, there is provided a method of manufacturing a display panel for manufacturing the display panel, the method including:

step S1: dissolving organic silicon into a preset solvent, and uniformly stirring to ensure that the organic silicon fully reacts under the action of the solvent and a catalyst to obtain a reaction solution;

wherein the organosilicon may be a compound containing a silicon (Si) -carbon (C) bond, and at least one organic group is directly bonded to a silicon atom. Illustratively, the silicone may be a polysiloxane. The solvent of step S1 may be solvent E. After stirring uniformly, a mixture of the organic silicon and the solvent can be obtained. The mixture can generate the reaction liquid under the action of a catalyst. The catalyst may be of the type such as organic catalysts, metal catalysts, biocatalysts and the like.

Step S2: spraying air into the reaction liquid through a high-pressure nozzle for granulation to obtain a plurality of wet balls;

wherein, when passing through the high-pressure nozzle, the aperture and the spraying speed of the nozzle can be controlled so as to control the size of the wet bulb. It is to be understood that the present application is not limited to how granulation is performed.

And step S3: collecting a plurality of wet balls obtained after granulation, and performing organic matter replacement after heating and curing treatment to obtain an intermediate material;

wherein, the wet bulb can be collected in water with certain PH, and the water is heated to a preset temperature, cured for a period of time and then washed by water. The washed material and a substance such as n-butanol can form an azeotrope, and the azeotrope is subjected to oil-water separation to carry out organic matter replacement to obtain a replaced intermediate material for later use.

And step S4: processing the intermediate material in a vacuum drying mode to obtain silicon dioxide aerogel particles with nano apertures;

wherein, the replaced material can be heated at a preset temperature rise speed, and silicon dioxide (SiO 2) aerogel particles with nanometer apertures can be obtained after vacuum drying. It should be noted that the aerogel particles can be spherical, and the diameter of the spherical shape can be on the nanometer scale, such as 200 nm. The distance between different aerogel particles can also be on the nanometer scale, for example 40 nanometers.

Step S5: modifying the surface of the plurality of silica aerogel particles to form target hydrophobic groups, thereby forming a plurality of hydrophobic aerogel particles;

wherein the target hydrophobic group may be, for example, a hydrocarbon group, an ester group, or the like. It is to be understood that the application is not limited to the type of hydrophobic group targeted.

Step S6: mixing the hydrophobic aerogel particles with a preset polymer, a photoinitiator, an active monomer, a leveling agent, a solvent and an adhesive to obtain a photoresist;

the preset polymer, the photoinitiator, the active monomer, the leveling agent, the solvent and the adhesive can be matched with the hydrophobic aerogel particles according to the weight parts, so that the photoresist is obtained.

Step S7: preparing the photo-etching type spacer based on the photoresist;

the photoresist can be used as a raw material to prepare the photolithography type spacer in the embodiment of the present application. The photoresist can also be used for preparing other structures in display panels such as black matrixes, color group units and the like, and the specific process for preparing the photoetching type spacer is not limited in the application.

Step S8: preparing the display panel based on the photo-etching type spacer.

The photolithography spacer may be a main spacer or an auxiliary spacer. The display panel may further include other components such as pixel cells, polarizers, etc., which together with the photo-lithographic spacers form the display panel. The type of the display panel may be a liquid crystal display panel, and may also be other types of display panels, which is not limited in this application.

According to another aspect of the present application, there is provided a photo-resist spacer prepared using the photo-resist, the photo-resist spacer including at least one of the main spacer and/or at least one of the sub-spacers, the main spacer and the sub-spacer being formed between the first substrate and the second substrate by a photolithography process.

In the present application, aerogel particles can be added to the photoresist by the existing yellow light process, which can maintain the advantages of the existing photolithography type spacer. Because the added aerogel particles can be uniformly dispersed in the photoresist, the problem of agglomeration of the aerogel particles is solved, and other components of the photoresist can be fully mixed with the nano-sized aerogel. The required main spacer and auxiliary spacer matrix structure can be formed on the substrate by a coating method, a printing method and a traditional yellow light process; the main processes of the photolithography process may include coating, pre-baking, exposure, developing, post-baking, etc. It is understood that the application is not limited to the specific photolithography process.

Because the aerogel material density is low, the aerogel structure provided by the application can reduce the quality of a finished product of the liquid crystal panel; meanwhile, the aerogel material has high light transmittance and low refractive index, so that the aerogel structure provided by the application can improve the light dispersion problem; because the aerogel material has high porosity, the yellow light process reaction of the aerogel structure provided by the application can be more sufficient and easily controlled; since the aerogel material can have good and fast oil absorption and hydrophobicity, the long axis of liquid crystal molecules for liquid crystal display is generally tens of angstroms (1 angstrom =0.1 nm), and the pore diameter of the aerogel is generally 20 to 70nm, therefore, when the temperature is increased or decreased, the aerogel structure proposed by the application can absorb or overflow part of the liquid crystal to adjust the space in the box, and improve the process margin. The PS retaining wall with the proposed structure is equivalent to a layer of waterproof coating, so that the problem of water vapor entering can be solved; because aerogel material compressive property is strong, can bear the pressure of several thousand times of self quality, consequently, the aerogel structure that this application provided can improve the face pressure ability of panel. Aerogel material possesses the ability of quick reconversion, consequently, the aerogel structure that this application provided can improve the elastic recovery rate. In addition, because aerogel material still has good thermal stability, for example hydrophobic SiO2 aerogel can bear 1100 ℃ of high temperature, consequently, the aerogel structure that this application provided can make display panel performance more stable.

In addition, the aerogel particles have excellent performance, can be widely applied, and simultaneously simplify the combined segment difference structure of the main spacer and the auxiliary spacer, which is necessary for the current spacer, so that the problems of spacer surface pressure and process allowance can be solved by adopting the pillars with proper height.

To sum up, by manufacturing the photolithography spacer containing a plurality of aerogel particles and making the distance between the aerogel particles at least greater than the size of each liquid crystal molecule, the embodiment of the application can improve the phenomenon of uneven gravity of the display panel at high temperature, improve bubbles generated at low temperature, improve the elastic recovery rate, enhance the surface pressure capability and improve the retaining wall effect of the spacer.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The display panel, the terminal, the photoresist and the method for manufacturing the display panel provided in the embodiment of the present application are described in detail above, and a specific example is applied in the present application to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims

1. A display panel is characterized in that the display panel comprises a first substrate, a second substrate, liquid crystal and a plurality of photoetching spacers, wherein the liquid crystal is positioned between the first substrate and the second substrate, the first substrate and the second substrate are oppositely arranged, the liquid crystal is filled between the photoetching spacers, the liquid crystal comprises a plurality of liquid crystal molecules,

wherein: the photo-lithographic spacer includes a plurality of aerogel particles, and a distance between the aerogel particles is at least greater than a size of each of the liquid crystal molecules.

2. The display panel of claim 1, wherein the plurality of aerogel particles are uniformly dispersed in the photo-lithographically spacer, wherein: the plurality of aerogel particles are hydrophobic aerogel particles containing silicon dioxide.

3. The display panel of claim 1, wherein the distance between the aerogel particles is between 20 nm and 70 nm.

4. The display panel of claim 1, wherein the plurality of photo-lithographic type spacers include both types of main spacers and sub-spacers, the display panel further comprising a first electrode layer disposed on a side of the first substrate facing the second substrate,

wherein: the main spacer and the auxiliary spacer are both disposed on the first electrode layer, and the heights of the auxiliary spacers are both smaller than the height of the main spacer.

5. The display panel according to claim 4, further comprising a second electrode layer provided on a side of the second substrate facing the first substrate, wherein: the main spacer is connected to the second electrode layer, and the sub spacer is separated from the second electrode layer.

6. The display panel of claim 4, wherein at least one of the plurality of photo-lithographic spacers is a primary spacer and at least one of the photo-lithographic spacers is a secondary spacer.

7. The display panel of claim 4, wherein the plurality of lithographic spacers are all primary spacers.

8. A terminal, characterized in that the terminal comprises a terminal body and a display panel according to any one of claims 1 to 7, the terminal body being connected to the display panel.

9. A photoresist for use in preparing a lithographic spacer as claimed in any one of claims 1 to 7, the photoresist comprising a plurality of components in parts by weight, wherein: 5-50 parts of polymer, 0.1-20 parts of photoinitiator, 3-40 parts of active monomer, 0.1-5 parts of flatting agent, 45-90 parts of solvent, 0.1-10 parts of adhesive and 10-60 parts of aerogel particles.

10. A method for manufacturing a display panel, the method being used for manufacturing the display panel according to any one of claims 1 to 7, the method comprising:

dissolving organic silicon into a preset solvent, and uniformly stirring to ensure that the organic silicon fully reacts under the action of the solvent and a catalyst to obtain a reaction solution;

spraying air into the reaction liquid through a high-pressure nozzle for granulation to obtain a plurality of wet balls;

collecting a plurality of wet balls obtained after granulation, and performing organic matter replacement after heating and curing treatment to obtain an intermediate material;

processing the intermediate material in a vacuum drying mode to obtain a plurality of nano-aperture silicon dioxide aerogel particles;

modifying the surface of the plurality of silica aerogel particles to form target hydrophobic groups, thereby forming a plurality of hydrophobic aerogel particles;

mixing the hydrophobic aerogel particles with a preset polymer, a photoinitiator, an active monomer, a leveling agent, a solvent and an adhesive to obtain a photoresist;

preparing the photo-etching type spacer based on the photoresist;

preparing the display panel based on the photo-etching type spacer.