阅读说明：本技术 一种电控调光膜 (Automatically controlled membrane of adjusting luminance ) 是由 苏润红 于 2020-06-08 设计创作，主要内容包括：本发明公开了一种电控调光膜,包括一对PET层以及夹设于一对PET层间的液晶层,PET层为PET薄膜,厚度为160-200μm,透明度≥95％,收缩率≤1％,液晶层厚度为10-25μm,由双组份胶水、液晶单体和玻璃微珠制得,双组份胶水由聚氨酯胶粘剂和丙烯酸固化剂制得,双组分胶水和液晶单体质量比为42-58：34-46,玻璃微珠粒径为10-20μm,在液晶层中质量占比为2‰-14‰,液晶层将一对PET层粘接固定,PET层中贴合液晶层一面上镀有纳米铟锡金属氧化物层,纳米铟锡金属氧化物层电阻率为90-110Ω/㎡,能够在36-60V的工作电压下达到80％以上的平行光通过率,电光特性优异,此外,所需原料种类少且易于获得,工艺简单,生产成本得到降低,有利于产业化,市场前景广阔。(The invention discloses an electric control dimming film, which comprises a pair of PET layers and a liquid crystal layer clamped between the pair of PET layers, wherein the PET layers are PET films, the thickness of the PET films is 160-200 mu m, the transparency is more than or equal to 95%, the shrinkage rate is less than or equal to 1%, the thickness of the liquid crystal layer is 10-25 mu m, the electric control dimming film is prepared from two-component glue, a liquid crystal monomer and glass beads, the two-component glue is prepared from a polyurethane adhesive and an acrylic acid curing agent, and the mass ratio of the two-component glue to the liquid crystal monomer is: 34-46, the grain size of the glass beads is 10-20 μm, the mass ratio in the liquid crystal layer is 2-14%, the liquid crystal layer is used for bonding and fixing a pair of PET layers, one surface of the PET layer, which is attached to the liquid crystal layer, is plated with a nano indium tin metal oxide layer, the resistivity of the nano indium tin metal oxide layer is 90-110 omega/square meter, the parallel light passing rate of more than 80% can be achieved under the working voltage of 36-60V, the electro-optic characteristic is excellent, in addition, the required raw materials are few in types and easy to obtain, the process is simple, the production cost is reduced, the industrialization is facilitated, and the market prospect is wide.)

1. An automatically controlled membrane of adjusting luminance which characterized in that: the liquid crystal display panel comprises a pair of PET layers and a liquid crystal layer clamped between the pair of PET layers, wherein the PET layers are PET thin films, the thickness of the PET thin films is 160-200 mu m, the thickness of the liquid crystal layer is 10-25 mu m, the liquid crystal layer is made of double-component glue, liquid crystal monomers and glass beads, the double-component glue is made of polyurethane adhesive and acrylic acid curing agent, the pair of PET layers are fixedly bonded by the liquid crystal layer, one surface, attached to the liquid crystal layer, of the PET layers is plated with a nano indium tin metal oxide layer, and the edges of the PET layers are provided with.

2. An electrically controlled light modulating film as defined in claim 1, wherein: the transparency of the PET layer is more than or equal to 95 percent, and the shrinkage rate is less than or equal to 1 percent.

3. An electrically controlled light modulating film as defined in claim 2, wherein: the mass ratio of the bi-component glue to the liquid crystal monomer is 42-58: 34-46.

4. An electrically controlled light modulating film as defined in claim 3, wherein: the grain diameter of the glass beads is 10-20 μm, and the mass percentage of the glass beads in the liquid crystal layer is 2-14 per mill.

5. An electrically controlled light modulating film as defined in claim 4, wherein: the resistivity of the nano indium tin metal oxide layer is 90-110 omega/square meter.

6. An electrically controlled light modulating film as defined in claim 5, wherein: and a circuit is etched on the nano indium tin metal oxide layer to form a pattern for electrically controlling the electrifying of the light adjusting film to present a picture.

7. An electrically controlled light modulating film as defined in claim 6, wherein: the working voltage of the electric control light adjusting film is 36-60V.

8. An electrically controlled light modulating film as defined in claim 7, wherein: the production process of the electric control light adjusting film comprises the following steps:

A. selecting a PET film meeting the requirements for pretreatment, plating a nano indium tin metal oxide layer on one surface of the PET film by a magnetron sputtering method, and etching a preset circuit on the nano indium tin metal oxide layer;

B. preparing the two-component glue, the liquid crystal monomer and the glass beads according to the proportion, and mixing and stirring for 18-30h to obtain a colloidal mixture;

C. the surfaces of the nano indium tin metal oxide layers of the two PET films are parallel and opposite to each other, a space of 10-25 mu m is reserved, a baffle is arranged to seal gaps at two sides of the two PET films, a glue-shaped mixture is dripped from a gap at one end of the two PET films, a gap between the two PET films is completely filled, and then the two PET films are sent to a UV lamp for irradiation, so that the glue-shaped mixture is cured, and the electric control dimming film is obtained.

9. An electrically controlled light modulating film as defined in claim 8, wherein: and in the step C, the two PET films are fed under a UV lamp at the running speed of 1-2m/s, and the length of a lamp tube of the UV lamp is 2-3 m.

Technical Field

The invention relates to the field of optical materials, in particular to an electric control light adjusting film.

Background

As a novel electric control optical material, the liquid crystal dimming film is characterized in that polymer dispersed liquid crystal is solidified between two layers of transparent conductive films, the dimming film is in an opaque state under the condition without the action of an electric field, when alternating current is introduced, liquid crystal molecules in the dimming film deflect, the dimming film becomes transparent, and the dimming performance is realized. The liquid crystal dimming film is a new material for manufacturing dimming glass, is widely applied, is generally applied to the fields of building outer walls, house decoration, automobile glass, automobile rearview mirrors, projection curtain walls, office places, public entertainment facilities and the like, and has excellent characteristics of privacy protection, space permeability, safety and defense, light regulation and the like.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the electric control light adjusting film which has excellent electro-optical characteristics, low driving voltage and easy production.

In order to achieve the purpose, the technical scheme adopted by the invention for solving the technical problems is as follows: an electric control dimming film comprises a pair of PET layers and a liquid crystal layer clamped between the pair of PET layers, wherein the PET layers are PET thin films, the thickness of the PET thin films is 160-200 mu m, the thickness of the liquid crystal layer is 10-25 mu m, the electric control dimming film is prepared from double-component glue, a liquid crystal monomer and glass beads, the double-component glue is prepared from a polyurethane adhesive and an acrylic acid curing agent, the pair of PET layers are fixedly bonded by the liquid crystal layer, one surface, attached to the liquid crystal layer, of each PET layer is plated with a nano indium tin metal oxide layer, and the edges of the PET layers are provided with electric connection.

Preferably, the transparency of the PET layer is more than or equal to 95 percent, and the shrinkage rate is less than or equal to 1 percent.

Preferably, the mass ratio of the bi-component glue to the liquid crystal monomer is 42-58: 34-46.

Preferably, the particle size of the glass beads is 10-20 μm, and the mass percentage of the glass beads in the liquid crystal layer is 2-14 per mill.

Preferably, the resistivity of the nano indium tin metal oxide layer is 90-110 omega/square meter.

Preferably, a circuit is etched on the nano indium tin metal oxide layer to form a pattern for electrically controlling the electrification of the light modulation film to present a picture.

Preferably, the working voltage of the electric control light adjusting film is 36-60V.

Preferably, the production process of the electrically controlled light modulation film comprises the following steps:

A. selecting a PET film meeting the requirements for pretreatment, plating a nano indium tin metal oxide layer on one surface of the PET film by a magnetron sputtering method, and etching a preset circuit on the nano indium tin metal oxide layer;

B. preparing the two-component glue, the liquid crystal monomer and the glass beads according to the proportion, and mixing and stirring for 18-30h to obtain a colloidal mixture;

C. the surfaces of the nano indium tin metal oxide layers of the two PET films are parallel and opposite to each other, a space of 10-25 mu m is reserved, a baffle is arranged to seal gaps at two sides of the two PET films, a glue-shaped mixture is dripped from a gap at one end of the two PET films, a gap between the two PET films is completely filled, and then the two PET films are sent to a UV lamp for irradiation, so that the glue-shaped mixture is cured, and the electric control dimming film is obtained.

Preferably, in the step C, the two PET films are fed under a UV lamp at a running speed of 1-2m/s, and the length of a lamp tube of the UV lamp is 2-3 m.

Due to the application of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

the invention can reach more than 80% of parallel light passing rate under the working voltage of 36-60V, has excellent electro-optic characteristic, and also has the advantages of good flexibility, energy saving, environmental protection, long service life and the like.

Drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure: 1. a PET layer; 2. a liquid crystal layer; 3. a nano indium tin metal oxide layer; 4. and (6) connecting the electric terminals.

Detailed Description

The present invention will be further described in detail with reference to the following specific examples:

as shown in figure 1, the invention relates to an electric control light modulation film, which comprises a pair of PET layers 1 and a liquid crystal layer 2 clamped between the pair of PET layers 1, wherein the PET layers 1 are PET films, the thickness of the PET films is 160-200 mu m, the transparency is larger than or equal to 95%, the shrinkage rate is smaller than or equal to 1%, the thickness of the liquid crystal layer 2 is 10-25 mu m, the electric control light modulation film is prepared from two-component glue, a liquid crystal monomer and glass beads, the two-component glue is prepared from a polyurethane adhesive and an acrylic acid curing agent, and the mass ratio of the two-component glue: 34-46, the grain diameter of the glass beads is 10-20 μm, the mass percentage in the liquid crystal layer 2 is 2-14%, the liquid crystal layer 2 is used for bonding and fixing a pair of PET layers 1, one surface of the PET layer 1, which is attached to the liquid crystal layer 2, is plated with a nano indium tin metal oxide layer 3, the resistivity of the nano indium tin metal oxide layer 3 is 90-110 omega/square meter, the edge of the PET layer 1 is provided with an electric connection terminal 4, and the working voltage of the electric control light modulation film is 36-60V.

The nano indium tin metal oxide layer 3 is etched with preset circuits to form customized patterns, such as patterns, grids, characters, images and the like, corresponding pictures are displayed when the electric control dimming film is in a transparent state when being electrified, the attractive decorative effect is enhanced, the functions of marking indication and even advertising are achieved, and the commercial value is improved.

The invention can reach more than 80% of parallel light passing rate under 36-60V working voltage through detection, has excellent electro-optic characteristic, and also has the advantages of good flexibility, energy saving, environmental protection, long service life and the like.

The working principle of the invention is as follows: the surface of the PET layer 1 is plated with a nano indium tin metal oxide layer 3 to form a flexible ITO transparent conductive film, a pair of flexible ITO transparent conductive films is bonded by a liquid crystal layer 2, various organic polymers in double-component glue, liquid crystal monomers and glass beads are stirred for a long time to form a mixed dispersion system, the liquid crystal monomers are uniformly distributed and cured in the mixed dispersion system after being irradiated by ultraviolet rays, the liquid crystal monomers with dispersed orientation scatter incident light, an electric control dimming film is in an opaque state, the electric connection end 4 is electrified, the liquid crystal monomers deflect under the action of an electric field and are orderly arranged along the direction of the electric field to enable the incident light to transmit, and the electric control dimming film is in a transparent state, so that the electric control switching.