CN115685627A - Reflective liquid crystal display panel, preparation method thereof and liquid crystal display - Google Patents

Abstract

This application relates to the field of liquid crystal display technology, and provides a method for preparing a reflective liquid crystal display panel, including the following steps: providing a first conductive substrate and a second conductive substrate; preparing a plurality of mutually spaced supports on the surface of the first conductive substrate body; wherein, a plurality of support bodies separated from each other form several groove units on the surface of the first conductive substrate; liquid crystal material is prepared, and the liquid crystal material is filled into each groove unit; the first conductive substrate and the second conductive The substrates are relatively bonded so that the liquid crystal material is encapsulated between the first conductive substrate and the second conductive substrate to obtain a reflective liquid crystal display panel. The preparation method of the reflective liquid crystal display panel provided by this application is to prepare a plurality of support bodies spaced apart from each other on the surface of the first conductive substrate, and encapsulate the liquid crystal material in the groove unit formed by the support bodies, so as to effectively avoid the large size of the liquid crystal. Range of flow can ensure uniform distribution of liquid crystals, with good display stability and high definition.

Description

A reflective liquid crystal display panel and its preparation method and liquid crystal display

technical field

The application belongs to the technical field of liquid crystal display, and in particular relates to a reflective liquid crystal display panel, a preparation method thereof, and a liquid crystal display.

Background technique

Reflective liquid crystal display is realized by using the Bragg reflection bright state of the planar texture unique to cholesteric liquid crystals and the scattering dark state of the focal conic texture to form a set of contrast states, which has the remarkable feature of zero-field bistable state , easy to realize low-power reflective display. It does not require polarizers, is readable in sunlight, and can be fabricated on flexible substrates, suitable for flexible displays such as e-books and e-papers. Therefore, it has attracted more and more attention from people. The reflection of ambient light by reflective liquid crystal display panels depends on the Bragg reflection of the geometric arrangement of liquid crystal molecules, and its reflection mode directly depends on the order and direction of molecular arrangement. Its arrangement is realized under weak anchoring conditions. When the liquid crystal cell is bent or pressed, the shrinkage of the substrate spacing will cause the liquid crystal to flow, thereby affecting the alignment state of the liquid crystal molecules. If it is not refreshed at this time, the liquid crystal will flow The resulting texture change will persist until the next refresh, thus causing a change in the display effect.

In order to solve this problem, at present, spacers and polymer materials are mainly used in the liquid crystal, which can improve the anti-pressing function of the reflective liquid crystal display panel to a certain extent. The preparation of polymer-dispersed liquid crystal films usually adopts the polymerization phase separation method, mixing small molecular liquid crystals and non-liquid crystal polymerizable monomers in a certain proportion, and then triggering the non-liquid crystal polymerizable monomers by ultraviolet radiation or heating. A crosslinking reaction occurs. With the continuous increase of polymerized monomer molecular chains, the solution of small molecular liquid crystal materials in macromolecules is continuously reduced, and thus precipitates, merges and grows in the form of liquid crystal droplets. When the non-liquid crystal polymerizable monomer is completely polymerized, liquid crystal droplets are dispersed in the polymer matrix of the continuous phase in the form of a discontinuous phase. However, in the actual production process, the UV-induced phase separation method is difficult to achieve regular growth of the spacer structure, resulting in weakened support for the liquid crystal cell.

Contents of the invention

The purpose of the present application is to provide a reflective liquid crystal display panel and its preparation method and liquid crystal display, aiming to solve the problem of poor anti-pressing effect of the existing reflective liquid crystal display panel.

In order to realize the above-mentioned application purpose, the technical scheme adopted in this application is as follows:

In a first aspect, the present application provides a method for preparing a reflective liquid crystal display panel, comprising the following steps:

providing a first conductive substrate and a second conductive substrate;

Prepare a plurality of mutually spaced supports on the surface of the first conductive substrate; wherein, the plurality of mutually spaced supports form several groove units on the surface of the first conductive substrate;

Prepare the liquid crystal material and fill the liquid crystal material into each groove unit;

The first conductive substrate and the second conductive substrate are relatively bonded, so that the liquid crystal material is encapsulated between the first conductive substrate and the second conductive substrate, and a reflective liquid crystal display panel is obtained.

In a second aspect, the present application provides a reflective liquid crystal display panel, which includes a first conductive substrate and a second conductive substrate opposite to the first conductive substrate, and is interposed between the first conductive substrate and the second conductive substrate. The liquid crystal flow limiting layer and the adhesive layer are arranged between the first conductive substrate and the adhesive layer, the adhesive layer is arranged between the liquid crystal flow limiting layer and the second conductive substrate, and the liquid crystal flow limiting layer includes a plurality of Support bodies spaced apart from each other and several groove units formed by the support bodies spaced apart from each other, the groove units are filled with liquid crystal material.

In a third aspect, the present application provides a reflective liquid crystal display, including a reflective liquid crystal display panel prepared by the method for preparing a reflective liquid crystal display panel provided in the present application, or a reflective liquid crystal display panel provided in the present application.

Compared with the prior art, the present application has the following beneficial effects:

In the method for preparing a reflective liquid crystal display panel provided in the first aspect of the present application, a plurality of support bodies separated from each other are prepared on the surface of the first conductive substrate, and the support bodies separated from each other form a plurality of recesses on the surface of the first conductive substrate. Then fill the liquid crystal material into each groove unit, and finally bond the first conductive substrate and the second conductive substrate, so that the liquid crystal material is encapsulated between the first conductive substrate and the second conductive substrate, and a reflective liquid crystal is obtained display panel. Therefore, the fluidity of the liquid crystal is limited to each groove unit between the first conductive substrate and the second conductive substrate, effectively avoiding the large-scale flow of the liquid crystal, and not only ensuring the uniform distribution of the liquid crystal when the liquid crystal display panel is bent or pressed , to ensure the stability of the liquid crystal display; and can reduce the amount of high molecular polymer mixed in the liquid crystal, thereby effectively improving the display clarity of the liquid crystal display. In addition, the preparation method is simple, low in cost, high in production efficiency, and can effectively ensure that the prepared reflective liquid crystal display panel is light and thin, low in energy consumption, and stable in quality.

The reflective liquid crystal display panel provided by the second aspect of the present application includes a first conductive substrate and a second conductive substrate opposite to the first conductive substrate, and a confining liquid crystal is interposed between the first conductive substrate and the second conductive substrate. The flow layer and the adhesive layer, because the liquid crystal flow layer contains a plurality of mutually spaced supports and several groove units formed by a plurality of mutually spaced supports, and the liquid crystal material is filled in the groove units, therefore, The liquid crystal flow restriction layer can restrict the liquid crystal material to flow in each groove unit, which can effectively prevent the liquid crystal from flowing in a large area. When the reflective liquid crystal display panel is bent or pressed, it can ensure that the liquid crystal is evenly distributed, and has good display stability and High definition, anti-pressing, light and thin, low energy consumption, good product quality.

The reflective liquid crystal display provided by the third aspect of the present application contains the reflective liquid crystal display panel prepared by the preparation method of the reflective liquid crystal display panel provided by the present application, or the reflective liquid crystal display panel provided by the present application, so the reflective liquid crystal display panel The liquid crystal display has good display stability and high definition, can resist pressing, light and thin, low energy consumption, and good product quality.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are only for the present application For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

FIG. 1 is a process flow diagram of a method for preparing a reflective liquid crystal display panel provided in an embodiment of the present application;

Fig. 2 is the actual process diagram of the preparation method of the reflective liquid crystal display panel provided by the embodiment of the present application;

3 is a schematic structural view of a reflective liquid crystal display panel prepared by the method for preparing a reflective liquid crystal display panel provided in an embodiment of the present application;

4 is a schematic structural view of a reflective liquid crystal display panel prepared by a method for preparing a reflective liquid crystal display panel provided in another embodiment of the present application;

5 is an SEM image of a reflective liquid crystal display panel prepared by the method for preparing a reflective liquid crystal display panel provided in Example 1 of the present application and a comparative example;

6 is a microscope picture of a reflective liquid crystal display panel prepared by the method for preparing a reflective liquid crystal display panel provided in Example 1 of the present application;

Wherein, each reference sign in the figure:

1—first conductive substrate, 2—second conductive substrate, 3—layer restricting liquid crystal flow, 4—adhesive layer, 31—support body, 32—groove unit.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved in the present application clearer, the present application will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

In this application, the term "and/or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, A and/or B may mean: A exists alone, A and B exist simultaneously, and B exists alone Condition. Among them, A and B can be singular or plural. The character "/" generally indicates that the contextual objects are an "or" relationship.

In this application, "at least one" means one or more, and "multiple" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, "at least one item (unit) of a, b, or c", or "at least one item (unit) of a, b, and c" can mean: a, b, c, a-b( That is, a and b), a-c, b-c, or a-b-c, where a, b, and c can be single or multiple.

It should be understood that in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and some or all steps may be executed in parallel or sequentially, and the execution order of each process shall be based on its functions and The internal logic is determined and should not constitute any limitation to the implementation process of the embodiment of the present application.

Terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "said" and "the" used in the embodiments of this application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

The weight of the relevant components mentioned in the description of the embodiments of the present application can not only refer to the specific content of each component, but also represent the proportional relationship between the weights of the various components. The scaling up or down of the content of the fraction is within the scope disclosed in the description of the embodiments of the present application. Specifically, the mass described in the description of the embodiments of the present application may be μg, mg, g, kg and other well-known mass units in the chemical industry.

The terms "first" and "second" are only used for descriptive purposes to distinguish objects such as substances from each other, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. For example, without departing from the scope of the embodiments of the present application, the first XX can also be called the second XX, and similarly, the second XX can also be called the first XX. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features.

The first aspect of the embodiment of the present application provides a method for preparing a reflective liquid crystal display panel, as shown in FIG. 1 , including the following steps:

S01: providing a first conductive substrate and a second conductive substrate;

S02: Prepare a plurality of mutually spaced supports on the surface of the first conductive substrate; wherein, the plurality of mutually spaced supports form a plurality of groove units on the surface of the first conductive substrate;

S03: preparing a liquid crystal material, and filling the liquid crystal material into each groove unit;

S04: The first conductive substrate and the second conductive substrate are relatively bonded, so that the liquid crystal material is encapsulated between the first conductive substrate and the second conductive substrate, and a reflective liquid crystal display panel is obtained.

In the method for preparing a reflective liquid crystal display panel provided in the embodiment of the present application, a plurality of support bodies separated from each other are prepared on the surface of the first conductive substrate, and a plurality of grooves are formed on the surface of the first conductive substrate by the support bodies separated from each other. unit, then fill the liquid crystal material into each groove unit, and finally bond the first conductive substrate and the second conductive substrate, so that the liquid crystal material is encapsulated between the first conductive substrate and the second conductive substrate, and a reflective liquid crystal display is obtained panel. Therefore, the fluidity of the liquid crystal is limited to each groove unit between the first conductive substrate and the second conductive substrate, effectively avoiding the large-scale flow of the liquid crystal, and not only ensuring the uniform distribution of the liquid crystal when the liquid crystal display panel is bent or pressed , to ensure the stability of the liquid crystal display; and can reduce the amount of high molecular polymer mixed in the liquid crystal, thereby effectively improving the display clarity of the liquid crystal display. In addition, the preparation method is simple, low in cost, high in production efficiency, and can effectively ensure that the prepared reflective liquid crystal display panel is light and thin, low in energy consumption, and stable in quality.

In the above step S01, both the first conductive substrate and the second conductive substrate include a glass substrate and a transparent conductive film bonded on the surface of the glass substrate, for example, the transparent conductive film may be an ITO film. In a specific application, the first conductive substrate and the second conductive substrate may be commonly used conductive substrates in the prior art.

In an embodiment, a first silicon dioxide layer is formed on the surface of the first conductive substrate, the support body is formed on the first silicon dioxide layer, and a second silicon dioxide layer is formed on the surface of the second conductive substrate; when the first When the conductive substrate and the second conductive substrate are relatively bonded, the first silicon dioxide layer and the second silicon dioxide layer are relatively bonded. Specifically, the step of forming the first silicon dioxide layer on the surface of the first conductive substrate includes: coating the silicon dioxide solution on the surface of the first conductive substrate and performing thermal curing treatment to obtain the first silicon dioxide layer. The step of forming the second silicon dioxide layer on the surface of the second conductive substrate includes: coating the silicon dioxide solution on the surface of the second conductive substrate and performing thermal curing treatment to obtain the second silicon dioxide layer. Wherein, the thermal curing temperature is 50-250°C. The thicknesses of the formed first silicon dioxide layer and the second silicon dioxide layer are both 1-20nm, such as 1nm, 2nm, 3nm, 4nm, 5nm, 6nm, 7nm, 8nm, 9nm, 10nm, 15nm, 20nm. In this embodiment, the first silicon dioxide layer of a certain thickness is formed on the surface of the transparent conductive film of the first conductive substrate and the second silicon dioxide layer of a certain thickness is formed on the surface of the transparent conductive film of the second conductive substrate, so that the first conductive film can be repaired. The defects produced after the etching of the transparent conductive film (such as ITO film) of the substrate and the second conductive substrate can avoid the difference in display effect caused by the different interactions between the transparent conductive film and the glass and the liquid crystal when the conductive substrate is in contact with the liquid crystal material, so It can ensure that the surface states of the etching area and the non-etching area of the conductive substrate are consistent, thereby improving the display effect of the reflective liquid crystal display panel.

In the above step S02, the step of preparing a plurality of mutually spaced supports on the surface of the first conductive substrate includes:

S021: coating the first ultraviolet light polymerizable monomer on the surface of the first silicon dioxide layer, performing pre-curing treatment to form a polymer film;

S022: Embossing the surface of the polymer film with a convex roller, and then performing a first curing treatment to form a support layer.

In the above step S021, the first ultraviolet light polymerizable monomer is selected from any one of acrylate monomers, epoxy acrylic monomers, isocyanate monomers, and thiol monomers. For example, the first UV-polymerizable monomer may be an acrylate-based monomer. In an embodiment, the pre-curing treatment includes: curing for 5-20s under an ultraviolet light intensity of 0.1-20 mW/cm ² . Under the condition of the ultraviolet light intensity and curing time, the polymerization speed of the first ultraviolet light polymerizable monomer can be ensured to be suitable, and the first ultraviolet light polymerizable monomer on the surface can be uniformly polymerized, and then diffused from the surface inward, thereby A polymer film in a semi-solid state is formed. The thickness of the polymer film is 1-20 μm.

In the above step S022, the convex roller may include any one of a laser engraved convex roller and a silicone convex roller. The pattern on the surface of the convex roller may include any one of triangles, squares, rectangles, pentagons, hexagons and circles. For example, the convex roll can be a laser engraved convex roll. In an embodiment, embossing treatment is performed on the surface of the polymer film by using a laser engraving convex roller, and then a first curing treatment is performed to form a plurality of mutually spaced supports on the surface of the silicon dioxide layer. The first curing treatment includes: curing for 1 to 20 minutes at an ultraviolet light intensity of 1 to 20 mW/cm ² ; under the conditions of the ultraviolet light intensity and curing time, the first ultraviolet light polymerizable monomer on the surface of the silicon dioxide layer can be guaranteed Completely cured, the resulting support body has good mechanical properties, plays a role in restricting the flow of liquid crystals, can effectively avoid large-scale flow of liquid crystals, and improves the display stability and clarity of reflective liquid crystal display panels.

In an embodiment, the area of the groove unit is 0.1-300 μm ² , such as 0.1 μm ² , 1 μm ² , 10 μm 2 , 20 μm ² , 30 μm ² , 40 μm ² , 50 μm ² , 100 μm ² , 150 μm ² , 200 μm ^{2 ,} 250 μm ² , 300 μm ² . Within the range of the area of the groove unit, it can be ensured that several groove units formed by a plurality of support bodies spaced apart from each other have high mechanical strength, so as to limit the flow of liquid crystal.

In an embodiment, the groove unit has a depth of 1-20 μm, such as 1 μm, 2 μm, 4 μm, 6 μm, 8 μm, 10 μm, 12 μm, 14 μm, 16 μm, 18 μm, 20 μm. Within the depth range of the groove unit, it can be ensured that the voltage for driving the liquid crystal in the groove unit is suitable, so that it is easier to drive the liquid crystal in the groove unit, and the display effect is better.

In an embodiment, the width of the support is 1-50 μm, such as 1 μm, 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm. Within the width range of the support body, not only can ensure that several groove units formed by a plurality of mutually spaced support bodies have high mechanical strength, but also can ensure that the reflective liquid crystal display panel has high contrast.

In an embodiment, the shape of the groove unit includes any one of triangle, square, rectangle, pentagon, hexagon, and circle. For example, the shape of the groove unit is a square.

In the above step S03, the liquid crystal material includes the following components in parts by weight:

Wherein, the first UV polymerizable monomer, the second UV polymerizable monomer and the third UV polymerizable monomer are the same.

In an embodiment, the method for preparing the liquid crystal material includes: measuring the cholesteric liquid crystal or the chiral nematic liquid crystal, the chiral agent, the third ultraviolet light polymerizable monomer and the photoinitiator respectively according to the distribution ratio of each component of the above liquid crystal material ; Under the condition of 20-50° C., cholesteric liquid crystal or chiral nematic liquid crystal, chiral agent, third ultraviolet light polymerizable monomer and photoinitiator are mixed and treated for 3-24 hours to obtain liquid crystal material. The color of the reflective liquid crystal display panel can be adjusted by adjusting the ratio of the cholesteric liquid crystal or the chiral nematic liquid crystal to the chiral agent within the range of parts by weight of the components contained in the liquid crystal material.

In an embodiment, the liquid crystal material contains 95 to 105 parts of cholesteric liquid crystal or chiral nematic liquid crystal, preferably 98 to 102 parts, 2 to 8 parts of chiral agent, and 10 to 30 parts of the third ultraviolet Photopolymerizable monomer, preferably 10-12 parts, contains 1-2 parts of photoinitiator. Specifically, the chiral agent can be selected from at least one of liquid crystal chiral additives such as R811, R1011, R5011, R6N, and CB15. The third ultraviolet light polymerizable monomer may be selected from any one of acrylate monomers, epoxy acrylic monomers, isocyanate monomers, and thiol monomers. The photoinitiator can be selected from any one of 173, 184, 651, 819, 1173 and other photoinitiators.

In the above step S04, the step of relatively bonding the first conductive substrate and the second conductive substrate includes: coating the second ultraviolet light polymerizable monomer on the surface of the second silicon dioxide layer, and then coating the first The conductive substrate and the second conductive substrate are bonded relative to each other, and then a second curing treatment is performed so that the second ultraviolet light polymerizable monomer forms an adhesive layer. In the embodiment of the present application, the second ultraviolet light polymerizable monomer is coated on the surface of the second silicon dioxide layer of the second conductive substrate, and the second ultraviolet light polymerizable monomer forms an adhesive layer after curing, thereby passing through the adhesive layer Bonding the second conductive substrate to the first conductive substrate and encapsulating the liquid crystal material in the groove unit between the first conductive substrate and the second conductive substrate can effectively enhance the adhesive force of the reflective liquid crystal display panel, thereby It can effectively prevent the first conductive substrate and the second conductive substrate from peeling off from each other.

Wherein, the second curing treatment includes: curing under an ultraviolet light intensity of 1-5 mW/cm ² for 10-30 min. In application, two UV lamps can be used to irradiate the display areas of the first conductive substrate and the second conductive substrate for 10 to 30 minutes with an ultraviolet light intensity of 1 to 5 mW/ ^cm2 , so that the unreacted The complete first ultraviolet light polymerizable monomer and the second ultraviolet light polymerizable monomer coated on the surface of the second silicon dioxide layer of the second conductive substrate are polymerized under the irradiation of ultraviolet light, thereby realizing the first conductive The substrate and the second conductive substrate are bonded, and the curing efficiency is high.

In an embodiment, the second UV-polymerizable monomer includes at least one of an acrylate monomer, an epoxy acrylic monomer, an isocyanate monomer, and a thiol monomer, and the first UV-polymerizable The monomer, the second ultraviolet light polymerizable monomer and the third ultraviolet light polymerizable monomer are the same, which can avoid the obvious refraction interface between each groove unit in the supporting layer and the polymer in the liquid crystal.

The second aspect of the embodiment of the present application provides a reflective liquid crystal display panel, the structural diagram of which is shown in FIG. A liquid crystal flow limiting layer 3 and an adhesive layer 4 are also interposed between the conductive substrate 1 and the second conductive substrate 2, the liquid crystal flow limiting layer 3 is arranged between the first conductive substrate 1 and the adhesive layer 4, and the adhesive layer 4 Arranged between the liquid crystal flow limiting layer 3 and the second conductive substrate 2, the liquid crystal flow limiting layer 3 includes a plurality of support bodies 31 spaced apart from each other and several groove units 32 formed by the support bodies 31 spaced apart from each other, The groove unit 32 is filled with a liquid crystal material.

The reflective liquid crystal display panel provided by the embodiment of the present application includes a first conductive substrate 1 and a second conductive substrate 2 opposite to the first conductive substrate 1, and is sandwiched between the first conductive substrate 1 and the second conductive substrate 2. A liquid crystal flow limiting layer 3 and an adhesive layer 4 are provided, because the liquid crystal flow limiting layer 3 includes a plurality of support bodies 31 spaced apart from each other and several groove units 32 formed by a plurality of support bodies 31 spaced apart from each other, and the liquid crystal material It is filled in the groove units 32. Therefore, the liquid crystal flow restriction layer 3 can restrict the liquid crystal material to flow in each groove unit 32, which can effectively prevent the liquid crystal from flowing in a large range. When the reflective liquid crystal display panel is bent or pressed It can ensure that the liquid crystal is evenly distributed, has good display stability and high definition, can resist pressing, is light and thin, low energy consumption, and good product quality.

In an embodiment, the first conductive substrate 1 of the reflective liquid crystal display panel is also combined with a first silicon dioxide layer 5, the second conductive substrate 2 is also combined with a second silicon dioxide layer 6, and the first silicon dioxide layer 5 and the second silicon dioxide layer 6 are relatively bonded, and its structural schematic diagram is shown in FIG. 4 .

The third aspect of the embodiments of the present application provides a reflective liquid crystal display, including the reflective liquid crystal display panel provided in the present application.

The reflective liquid crystal display provided by the embodiment of the present application contains the reflective liquid crystal display panel provided by the present application, so the reflective liquid crystal display has good display stability and high definition, can resist pressing, light and thin, low energy consumption, and the product Good quality.

The following will be described in conjunction with specific embodiments.

Example 1

This embodiment provides a method for preparing a reflective liquid crystal display panel, comprising the following steps:

S11: providing a first conductive substrate (including a glass substrate and a transparent conductive film), a second conductive substrate (including a glass substrate and a transparent conductive film);

S12: Apply the silicon dioxide liquid on the surface of the transparent conductive film of the first conductive substrate and the surface of the transparent conductive film of the second conductive substrate respectively, bake and cure at 150°C, and the transparent conductive film of the first conductive substrate A first silicon dioxide layer is formed on the surface of the film, and a second silicon dioxide layer is formed on the surface of the transparent conductive film of the second conductive substrate;

S13: Coat the acrylate monomer on the surface of the first silicon dioxide layer, and irradiate the first conductive substrate with an ultraviolet light intensity of 3mW/ ^cm2 for 10s to make the acrylate monomer on the surface of the first silicon dioxide layer The monomer-like monomer is pre-cured to form a polymer film, and then the surface of the polymer film is embossed with a laser engraving convex roller, and the first conductive substrate is irradiated with an ultraviolet light with an ultraviolet light intensity of 10mW/ ^cm2 for 10min to make the acrylate The monomer is fully cured to form a plurality of mutually spaced supports, wherein the plurality of mutually spaced supports form several groove units on the surface of the first conductive substrate, and the shape of the groove units is a square;

S14: Mix 100 parts of cholesteric liquid crystal, 4 parts of chiral agent R1011, 20 parts of acrylate monomer and 2 parts of photoinitiator 173 for 12 hours to obtain a liquid crystal material, and then fill the liquid crystal material into In each groove unit;

S15: Coating an acrylate monomer on the surface of the second silicon dioxide layer, and then bonding the first conductive substrate and the second conductive substrate to each other through the acrylate monomer, using two ultraviolet lamps at 3mW The intensity of ultraviolet light per cm ² was simultaneously irradiated on the display areas of the first conductive substrate and the second conductive substrate for 20 minutes, so that the remaining acrylic ester monomers were completely reacted to form an adhesive layer, and a reflective liquid crystal display panel was obtained.

After testing, the thickness of the first silicon dioxide layer and the second silicon dioxide layer are both 1-20 nm, the area of the groove unit is 0.1-300 μm ² , the depth of the groove unit is 1-20 μm, and the width of the support body is 1-50 μm, and the thickness of the adhesive layer is 0.1-1 μm.

Example 2

This embodiment provides a method for preparing a reflective liquid crystal display panel, comprising the following steps:

S21: providing a first conductive substrate (including a glass substrate and a transparent conductive film), a second conductive substrate (including a glass substrate and a transparent conductive film);

S22: Apply the silicon dioxide solution on the surface of the transparent conductive film of the first conductive substrate and the surface of the transparent conductive film of the second conductive substrate respectively, bake and cure at 50°C, and the transparent conductive film of the first conductive substrate A first silicon dioxide layer is formed on the surface of the film, and a second silicon dioxide layer is formed on the surface of the transparent conductive film of the second conductive substrate;

S23: Coat the epoxy-acrylic monomer on the surface of the first silicon dioxide layer, and irradiate the first conductive substrate with an ultraviolet light intensity of 0.1mW/ ^cm2 for 20s, so that the surface of the first silicon dioxide layer The epoxy acrylic monomer is pre-cured to form a polymer film, and then the surface of the polymer film is embossed with a laser engraving convex roller, and the first conductive substrate is irradiated with an ultraviolet light intensity of 1mW/ ^cm2 for 20 minutes, so that The epoxy acrylic monomer is completely cured to form a plurality of mutually spaced supports, wherein the plurality of mutually spaced supports form several groove units on the surface of the first conductive substrate, and the shape of the groove units is triangular;

S24: Mix 100 parts of cholesteric liquid crystal, 4 parts of chiral agent R1011, 20 parts of epoxy acrylic monomer and 2 parts of photoinitiator 173 for 12 hours to obtain a liquid crystal material, and then fill the liquid crystal material into each groove unit;

S25: Coating epoxy acrylic monomer on the surface of the second silicon dioxide layer, and then relatively bonding the first conductive substrate and the second conductive substrate through the epoxy acrylic monomer, using two ultraviolet lamps Simultaneously irradiate the display areas of the first conductive substrate and the second conductive substrate with an ultraviolet light intensity of 1 mW/cm ² for 30 minutes, so that the epoxy-acrylic monomers are completely reacted to form an adhesive layer, and a reflective liquid crystal display panel is obtained.

After testing, the thickness of the first silicon dioxide layer and the second silicon dioxide layer is 1-20 nm, the area of the groove unit is 0.1-300 μm ² , the depth of the groove unit is 1-20 μm, and the width of the support body is 1 ~50μm, the thickness of the adhesive layer is 0.1~1um.

Example 3

This embodiment provides a method for preparing a reflective liquid crystal display panel, comprising the following steps:

S31: providing a first conductive substrate (including a glass substrate and a transparent conductive film), a second conductive substrate (including a glass substrate and a transparent conductive film);

S32: Apply the silicon dioxide solution on the surface of the transparent conductive film of the first conductive substrate and the surface of the transparent conductive film of the second conductive substrate respectively, bake and cure at 250°C, and the transparent conductive film of the first conductive substrate A first silicon dioxide layer is formed on the surface of the film, and a second silicon dioxide layer is formed on the surface of the transparent conductive film of the second conductive substrate;

S33: Coating the epoxy acrylic monomer on the surface of the first silicon dioxide layer, and using ultraviolet light to irradiate the first conductive substrate with an ultraviolet light intensity of 20mW/ ^cm2 for 5s, so that the ring on the surface of the first silicon dioxide layer The oxyacrylic acid monomer is pre-cured to form a polymer film, and then the surface of the polymer film is embossed with a laser engraving convex roller, and the first conductive substrate is irradiated with an ultraviolet light with an ultraviolet light intensity of 20mW/ ^cm2 for 1min to make the ring The oxyacrylic acid monomer is completely cured to form a plurality of mutually spaced supports, wherein the plurality of mutually spaced supports form a plurality of groove units on the surface of the first conductive substrate, and the shape of the groove units is triangular;

S34: Mix 100 parts of cholesteric liquid crystal, 4 parts of chiral agent R1011, 20 parts of epoxy acrylic monomer and 2 parts of photoinitiator 173 for 12 hours to obtain a liquid crystal material, and then fill the liquid crystal material into each groove unit;

S35: Coating epoxy acrylic monomer on the surface of the second silicon dioxide layer, and then relatively bonding the first conductive substrate and the second conductive substrate through the epoxy acrylic monomer, using two ultraviolet lamps Simultaneously irradiate the display areas of the first conductive substrate and the second conductive substrate with an ultraviolet light intensity of 5 mW/cm ² for 10 minutes to completely react the epoxy acrylic monomer to form an adhesive layer, and obtain a reflective liquid crystal display panel.

After testing, the thickness of the first silicon dioxide layer and the second silicon dioxide layer are both 1-20 nm, the area of the groove unit is 0.1-300 μm ² , the depth of the groove unit is 1-20 μm, and the width of the support body is 1-50 μm, and the thickness of the adhesive layer is 0.1-1 μm.

Comparative example 1

This comparative example provides a preparation method of a reflective liquid crystal display panel, comprising the following steps:

S1: Coating an acrylate monomer on the surface of the transparent conductive film of the first conductive substrate, and irradiating the first conductive substrate with an ultraviolet light intensity of 3mW/cm ² for 10 minutes with an ultraviolet light to form a first polymer layer;

S2: Mix 100 parts of cholesteric liquid crystal, 4 parts of chiral agent R1011, 20 parts of acrylate monomer and 2 parts of photoinitiator 173 for 12 hours to obtain a liquid crystal material, and then coat the liquid crystal material to the surface of the first polymer layer;

S3: The first conductive substrate and the second conductive substrate are relatively bonded, and two ultraviolet lights are used to irradiate the display areas of the first conductive substrate and the second conductive substrate at the same time with an ultraviolet light intensity of 3mW/ ^cm2 for 20min, so that the remaining The acrylate monomer is completely reacted to obtain a reflective liquid crystal display panel.

Related performance test analysis:

(b) and (a) in Fig. 5 are the SEM figure of the reflective liquid crystal display panel prepared by the preparation method of the reflective liquid crystal display panel provided by embodiment 1 and comparative example respectively; As can be seen from Fig. 5, Fig. 5 (a) is a polymer-dispersed liquid crystal structure, illustrating that the comparative example does not form a plurality of mutually separated supports on the surface of the first silicon dioxide layer of the first conductive substrate, and does not have a first silicon dioxide layer on the first conductive substrate. A number of groove units are formed on the surface of the layer, and the ultraviolet light polymerizable monomer undergoes a polymerization reaction under the irradiation of ultraviolet light to form a polymer. Since the polymer is incompatible with the liquid crystal, a polymer dispersed liquid crystal structure is formed. And Fig. 5 (b) is embodiment 1 on the first silicon dioxide layer surface of the first conductive substrate a plurality of mutually spaced supports, forms some groove units on the first silicon dioxide layer surface of the first conductive substrate , fill the liquid crystal material into each groove unit, so it can be seen that an obvious barrier is formed between the display areas, thereby forming an effective support between the first conductive substrate and the second conductive substrate, which can effectively limit the movement of liquid crystal molecules .

Fig. 6 is a microscope picture of the reflective liquid crystal display panel prepared by the preparation method of the reflective liquid crystal display panel provided in Example 1; it can be seen from Fig. 6 that the supporting structure of the reflective liquid crystal display panel prepared in Example 1 is relatively complete , this structure can effectively prevent the stress transmission during the pressing process, thereby playing an anti-pressing effect.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the application should be included in the protection of the application. within range.

Claims (10)

1. A preparation method for reflective liquid crystal display panel, is characterized in that, comprises the following steps: providing a first conductive substrate and a second conductive substrate; Prepare a plurality of mutually spaced supports on the surface of the first conductive substrate; wherein, the plurality of mutually spaced supports form a plurality of groove units on the surface of the first conductive substrate; preparing a liquid crystal material, and filling the liquid crystal material into each of the groove units; The first conductive substrate and the second conductive substrate are relatively bonded, so that the liquid crystal material is encapsulated between the first conductive substrate and the second conductive substrate, and a reflective liquid crystal display panel is obtained. 2. The preparation method according to claim 1, wherein a first silicon dioxide layer is formed on the surface of the first conductive substrate, and the support body is formed on the first silicon dioxide layer, so that A second silicon dioxide layer is formed on the surface of the second conductive substrate; When the first conductive substrate and the second conductive substrate are relatively bonded, the first silicon dioxide layer and the second silicon dioxide layer are relatively bonded. 3. The preparation method according to claim 2, wherein the step of forming the first silicon dioxide layer on the surface of the first conductive substrate comprises: coating a silicon dioxide solution on the first performing thermal curing treatment on the surface of the conductive substrate to obtain the first silicon dioxide layer; The step of forming a second silicon dioxide layer on the surface of the second conductive substrate includes: coating a silicon dioxide solution on the surface of the second conductive substrate and performing thermal curing treatment to obtain the second silicon dioxide layer. 4. The preparation method according to claim 2, wherein the step of preparing a plurality of mutually spaced supports on the surface of the first conductive substrate comprises: coating the first ultraviolet light polymerizable monomer on the surface of the first silicon dioxide layer, performing pre-curing treatment to form a polymer film; Embossing treatment is performed on the surface of the polymer film by using a convex roller, and then a first curing treatment is performed to form the support layer. 5. The preparation method according to claim 4, characterized in that, the step of relatively bonding the first conductive substrate and the second conductive substrate comprises: Coating the second ultraviolet light polymerizable monomer on the surface of the second silicon dioxide layer, then relatively bonding the first conductive substrate and the second conductive substrate, and then performing a second curing treatment to make The second ultraviolet light polymerizable monomer forms an adhesive layer. 6. The preparation method according to claim 5, characterized in that, the area of the groove unit is 0.1-300 μm ² ; and/or The depth of the groove unit is 1-20 μm; and/or The width of the support is 1-50 μm; and/or The shape of the groove unit includes any one of triangle, square, rectangle, pentagon, hexagon, and circle; and/or Both the first silicon dioxide layer and the second silicon dioxide layer have a thickness of 1-20 nm; and/or The thickness of the adhesive layer is 0.1-1um. 7. The preparation method according to claim 5, wherein the pre-curing treatment comprises: curing for 5-20s at an ultraviolet light intensity of 0.1-20mW/ ^cm2 ; and/or The first curing treatment includes: curing under an ultraviolet light intensity of 1-20mW/cm ² for 1-20min; and/or The second curing treatment includes: curing under an ultraviolet light intensity of 1-5 mW/cm ² for 10-30 min. 8. The preparation method according to any one of claims 5-7, wherein the liquid crystal material comprises the following components in parts by weight:

Wherein, the first UV polymerizable monomer, the second UV polymerizable monomer and the third UV polymerizable monomer are the same. 9. A reflective liquid crystal display panel, characterized in that it comprises a first conductive substrate and a second conductive substrate opposite to the first conductive substrate, between the first conductive substrate and the second conductive substrate A liquid crystal flow restricting layer and an adhesive layer are interposed therebetween, the liquid crystal flow restricting layer is arranged between the first conductive substrate and the adhesive layer, and the adhesive layer is arranged on the liquid crystal flow restricting layer Between and the second conductive substrate, the liquid crystal flow restriction layer comprises a plurality of support bodies spaced apart from each other and several groove units formed by the support bodies spaced apart from each other, and the groove units are filled with There are liquid crystal materials. 10. A liquid crystal display, characterized in that it comprises a reflective liquid crystal display panel made by the method for preparing a reflective liquid crystal display panel as claimed in any one of claims 1 to 8, or the reflective liquid crystal display panel as claimed in claim 9 LCD display panel.

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