CN111440401B - Polarized luminescent material and preparation method of polarized luminescent layer - Google Patents
Polarized luminescent material and preparation method of polarized luminescent layer Download PDFInfo
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Abstract
The invention provides a polarized light-emitting material and a preparation method of a polarized light-emitting layer. The components in the polarized luminescent material comprise 49.9-89.9% of fluorescent polymerizable monomer, 0.1-1% of photoinitiator and 10-50% of solvent by mass percent. Wherein, the fluorescent polymerizable monomer has a carbon-carbon double bond functional group and a thiol group.
Description
Technical Field
The invention relates to the field of display devices, in particular to a polarized light-emitting material and a preparation method of a polarized light-emitting layer.
Background
An LCD (Liquid Crystal Display) is one of the most common types of flat panel displays, and generally includes two panels on which field generating electrodes, such as pixel electrodes, a common electrode, and the like, are disposed, and a Liquid Crystal layer disposed between the two panels. The LCD is configured to apply an electric field in the liquid crystal layer by applying voltages to the field generating electrodes, determine the direction of liquid crystal molecules of the liquid crystal layer by the generated electric field, and control the polarization of incident light to facilitate displaying images.
Polarizers are important device materials in LCDs, but for optical efficiency, about 50% of the light can pass through them, i.e., more than half of the light can be filtered out by the polarizer, so for LCDs, only about 50% of the light can be used to display images, with a significant portion of the optical loss.
Disclosure of Invention
The invention aims to provide a polarized light-emitting material and a preparation method of a polarized light-emitting layer, so as to solve the problems of excessive light loss of a polarizer in the prior art and the like.
In order to achieve the above purpose, the present invention provides a polarized light emitting material, wherein the components of the polarized light emitting material comprise, by mass, 49.9-89.9% of a fluorescent polymerizable monomer, 0.1-1% of a photoinitiator, and 10-50% of a solvent. Wherein, the fluorescent polymerizable monomer has a carbon-carbon double bond functional group and a thiol group.
Further, the structural general formula of the fluorescent polymerizable monomer comprises:
Further, the molecular length-diameter ratio of the fluorescent polymerizable monomer is 4-100.
Further, the fluorescent polymerizable monomer is of a rod-like liquid crystal structure.
Further, the photoinitiator comprises one or more of benzophenone, acetophenone, alpha-hydroxy ketone and alpha-amino ketone.
Further, the solvent comprises one or more of acetone, tetrahydrofuran, toluene, propylene glycol, dichloromethane and chloroform.
The invention also provides a preparation method of the polarized light emitting layer, which comprises the following steps:
providing a substrate: the substrate has a horizontal alignment film thereon and is aligned.
Preparing a mixed solution: adding 49.9-89.9% of fluorescent polymerizable monomer, 0.1-1% of photoinitiator and 10-50% of solvent in a reaction vessel by mass percent, and mixing uniformly.
Coating the mixed solution: and coating the mixed solution on the substrate, and aligning the mixed solution.
Film forming: and heating and curing the substrate in an environment with the temperature of 50-110 ℃, polymerizing to form a film, and peeling the film from the substrate to form the polarized light emitting layer.
Wherein, the fluorescent polymerizable monomer has a carbon-carbon double bond functional group and a thiol group.
Further, the photoinitiator comprises one or more of benzophenone, acetophenone, alpha-hydroxy ketone and alpha-amino ketone. The solvent comprises one or more of acetone, tetrahydrofuran, toluene, propylene glycol, dichloromethane and chloroform.
The invention also provides a display panel which comprises a liquid crystal panel, a quantum dot light-emitting layer and a polarized light conversion layer. The quantum dot light-emitting layer is arranged on the liquid crystal panel. The polarized light conversion layer is arranged between the quantum dot light-emitting layer and the liquid crystal panel. Wherein the polarized light conversion layer has the polarized light emitting layer prepared in the preparation method.
Further, the polarized light conversion layer further comprises a polarized light structure layer, and the polarized light emitting layer is arranged in the polarized light structure layer.
The invention has the advantages that: the polarized light-emitting material provided by the invention is added with the fluorescent polymerizable monomer, and the fluorescent polymerizable monomer can be excited by blue light or ultraviolet light in backlight to generate excited fluorescence, so that light is compensated, optical benefit is improved, and light loss is reduced. And the preparation method for preparing the polarized light emitting layer by the polarized light emitting material is simple in process, and the material is simple and easy to obtain.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic flow chart of a preparation method in an embodiment of the present invention;
fig. 2 is a schematic view of a layered structure of a display panel according to an embodiment of the invention.
The components in the figures are represented as follows:
a display panel 1;
a liquid crystal panel 10; a polarized light conversion layer 20;
a quantum dot light emitting layer 30; a first polarizer 40.
Detailed Description
The following is a preferred embodiment of the present invention to fully introduce the technical contents of the present invention to those skilled in the art to illustrate that the present invention can be implemented, so that the technical contents disclosed in the present invention are more clear, and so that those skilled in the art can more easily understand how to implement the present invention. The present invention may, however, be embodied in many different forms of embodiment, and the scope of the present invention should not be construed as limited to the embodiment set forth herein, but rather construed as being limited only by the following description of the embodiment.
In the present specification, all raw materials used therein are conventionally used and commercially available. In the present invention, all amounts, percentages and parts are in parts by mass units, unless otherwise specified. The terms used in the description of the present invention are only used to describe specific embodiments, and are not intended to show the concept of the present invention. Unless the context clearly dictates otherwise, expressions used in the singular form encompass expressions in the plural form. In the present specification, it is to be understood that terms such as "comprising," "having," and "containing" are intended to specify the presence of stated features, integers, steps, acts, or combinations thereof, as taught in the present specification, and are not intended to preclude the presence or addition of one or more other features, integers, steps, acts, or combinations thereof.
The context clearly dictates otherwise that all of the method steps described herein may be performed in any suitable order. The present invention is not limited to the order of steps described. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate the inventive concept and does not pose a limitation on the scope of the inventive concept unless otherwise claimed. Various modifications and adaptations will be apparent to those skilled in the art without departing from the spirit and scope.
The embodiment of the invention provides a polarized luminescent material, which comprises 49.9-89.9% of fluorescent polymerizable monomer, 0.1-1% of photoinitiator and 10-50% of solvent by mass percent.
The fluorescent polymerizable monomer is of a rod-shaped liquid crystal structure, has a carbon-carbon double bond functional group and a thiol group, and has a molecular length-diameter ratio of 4-100. In the embodiment of the invention, the general structural formula of the fluorescent polymerizable monomer is
The photoinitiator can adopt one or more of benzophenone, acetophenone, alpha-hydroxy ketone and alpha-amino ketone.
The solvent may be one or more of acetone, tetrahydrofuran, toluene, propylene glycol, dichloromethane, chloroform.
The embodiment of the invention also provides a preparation method of the polarized light-emitting layer, the preparation flow is shown in figure 1, and the specific preparation steps are as follows:
step S10) provides a substrate, the substrate is covered with a horizontal alignment film, and the horizontal alignment film aligns the substrate.
Step S20) preparing a mixed solution: adding 50% of fluorescent polymerizable monomer, 0.1% of photoinitiator and 49.9% of solution by mass percent into a reaction vessel, and uniformly mixing to form the mixed solution. Wherein, the photoinitiator adopts benzophenone, and the solution adopts tetrahydrofuran.
Step S30) coating the mixed solution: and uniformly coating the mixed solution on the substrate, and aligning the mixed solution through a horizontal alignment film on the substrate to ensure that the molecules in the mixed solution are arranged in the same direction.
Step S40) film formation: and heating the substrate in an environment with the temperature of 50-110 ℃, and removing the liquid in the mixed liquid to pre-cure the substrate. And then heating at 50-110 deg.C to thermally cure, and make the carbon-carbon double bond functional group and thiol group completely react and polymerize to form film. The arrangement state of the molecules is fixed while the film is formed. Finally, the substrate is peeled off to form a polarized light emitting layer.
In other embodiments of the present invention, the structural formula of the fluorescent polymerizable monomer can also be
The mass percentage and the preparation steps of the one of (1) and the one of (2)
Similarly, they are not described in further detail herein. 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 an embodiment of the present invention, a display panel 1 is further provided, as shown in fig. 2, the display panel 1 includes a liquid crystal panel 10, a quantum dot light emitting layer 30, a polarized light converting layer 20, and a first polarizer 40.
The first polarizer 40 is disposed on the liquid crystal panel 10 and is used for analyzing the polarized light after being electrically modulated by the liquid crystal in the liquid crystal panel 10. The polarized light conversion layer 20 is disposed on a surface of the liquid crystal panel 10 away from the first polarizer 40, and includes a polarizer structure layer and the polarized light emitting layer prepared by the above preparation method, and the polarized light emitting layer is attached to or pressed in the polarizer structure layer. The quantum dot light emitting layer 30 is disposed on a surface of the polarized light conversion layer 20 away from the liquid crystal panel 10.
When the polarized light emitting layer in the polarized light conversion layer 20 is excited by blue light or ultraviolet light in the backlight, the excited fluorescence is generated, and because the molecules in the polarized light emitting layer are oriented in order, the excited fluorescence is emitted along the same direction, so that polarized light in a certain vibration direction is formed, and part of light filtered out in the polarized light structure layer is compensated. And then the polarized light is transmitted out from the first polarizer 40 after the vibration direction of the polarized light is rotated by 90 degrees through the liquid crystal panel 10, so that the blocked light is effectively utilized, and the optical benefit is improved.
In the polarized light emitting layer provided by the embodiment of the invention, the fluorescent polymerizable monomer is added in the polarized light emitting material serving as a raw material, and the fluorescent polymerizable monomer can be excited by blue light or ultraviolet light in backlight to generate excited fluorescence, so that light is compensated, optical benefit is improved, light loss is reduced, backlight source is saved, and brightness of the display panel 1 is improved. And the preparation method has simple flow and simple and easily obtained materials.
Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.
Claims (7)
1. A polarized luminescent material is characterized by comprising the following components in percentage by mass:
49.9-89.9% of fluorescent polymerizable monomer;
0.1 to 1 percent of photoinitiator;
10-50% of a solvent;
the fluorescent polymerizable monomer has a carbon-carbon double bond functional group and a thiol group, and the molecular length-diameter ratio of the fluorescent polymerizable monomer is 4-100;
the structural general formula of the fluorescent polymerizable monomer comprises:
the fluorescent polymerizable monomer is of a rod-shaped liquid crystal structure.
2. The polarized light emissive material of claim 1, wherein the photoinitiator comprises one or more of benzophenone, acetophenone, an α -hydroxy ketone, and an α -amino ketone.
3. The polarized light emissive material of claim 1, wherein the solvent comprises one or more of acetone, tetrahydrofuran, toluene, propylene glycol, dichloromethane, and chloroform.
4. A preparation method of a polarized light emitting layer is characterized by comprising the following steps:
providing a substrate: the substrate is provided with a horizontal alignment film and is aligned;
preparing a mixed solution: adding 49.9-89.9% of fluorescent polymerizable monomer, 0.1-1% of photoinitiator and 10-50% of solvent in a reaction vessel by mass percent, and uniformly mixing;
coating the mixed solution: coating the mixed solution on the substrate, and aligning the mixed solution;
film forming: heating and curing the substrate in an environment with the temperature of 50-110 ℃, polymerizing to form a film, and stripping the film from the substrate to form a polarized light emitting layer;
the fluorescent polymerizable monomer has a carbon-carbon double bond functional group and a thiol group, and the molecular length-diameter ratio of the fluorescent polymerizable monomer is 4-100;
the structural general formula of the fluorescent polymerizable monomer comprises:
the fluorescent polymerizable monomer is of a rod-shaped liquid crystal structure.
5. The method according to claim 4,
the photoinitiator comprises one or more of benzophenone, acetophenone, alpha-hydroxy ketone and alpha-amino ketone;
the solvent comprises one or more of acetone, tetrahydrofuran, toluene, propylene glycol, dichloromethane and chloroform.
6. A display panel, comprising:
a liquid crystal panel;
the quantum dot light-emitting layer is arranged on the liquid crystal panel;
the polarized light conversion layer is arranged between the quantum dot light-emitting layer and the liquid crystal panel;
wherein the polarized light conversion layer has the polarized light emitting layer prepared according to any one of claims 4 to 5 therein.
7. The display panel according to claim 6, wherein the polarized light conversion layer further comprises: the polaroid structural layer, the polarized light luminescent layer is located in the polaroid structural layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010258216.3A CN111440401B (en) | 2020-04-03 | 2020-04-03 | Polarized luminescent material and preparation method of polarized luminescent layer |
| PCT/CN2020/089799 WO2021196352A1 (en) | 2020-04-03 | 2020-05-12 | Polarized light-emitting material and preparation method for polarized light-emitting layer |
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| CN202010258216.3A CN111440401B (en) | 2020-04-03 | 2020-04-03 | Polarized luminescent material and preparation method of polarized luminescent layer |
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Citations (4)
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|---|---|---|---|---|
| WO2005034184A2 (en) * | 2003-09-25 | 2005-04-14 | Kelly Stephen M | Lighting elements, devices and methods |
| JP2005179589A (en) * | 2003-12-22 | 2005-07-07 | Fuji Photo Film Co Ltd | Optical element and 2,2'-bithiazole compound |
| CN101636469A (en) * | 2006-12-22 | 2010-01-27 | 罗利克有限公司 | Patternable liquid crystal polymer comprising thio-ether units |
| CN107015394A (en) * | 2017-03-24 | 2017-08-04 | 北京大学 | Trans electric-controlled light-regulating film with shielding near infrared light function and preparation method thereof |
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| JP2003049141A (en) * | 2001-08-03 | 2003-02-21 | Saiden Chemical Industry Co Ltd | Adhesive composition for polarizing plate |
| KR101712033B1 (en) * | 2011-12-29 | 2017-03-06 | 삼성전자 주식회사 | Backlight Unit and Liquid Crystal Display Including Same |
| KR102387751B1 (en) * | 2015-03-11 | 2022-04-15 | 삼성전자주식회사 | Barrier films and quantum dot polymer composite articles including the same |
| KR20170084681A (en) * | 2016-01-11 | 2017-07-20 | 삼성디스플레이 주식회사 | Photosensitive resin composition, film prepared the composition, and organic light emitting display device comprising the film |
| EP3239197B1 (en) * | 2016-04-28 | 2019-01-23 | Samsung Electronics Co., Ltd | Layered structures and quantum dot sheets and electronic devices including the same |
| KR102311852B1 (en) * | 2018-01-16 | 2021-10-12 | 동우 화인켐 주식회사 | Photocurable composition and photocured layer formed from the same |
| CN109917587B (en) * | 2019-03-26 | 2020-10-30 | 深圳市华星光电技术有限公司 | Liquid crystal display device and manufacturing method thereof |
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- 2020-04-03 CN CN202010258216.3A patent/CN111440401B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005034184A2 (en) * | 2003-09-25 | 2005-04-14 | Kelly Stephen M | Lighting elements, devices and methods |
| JP2005179589A (en) * | 2003-12-22 | 2005-07-07 | Fuji Photo Film Co Ltd | Optical element and 2,2'-bithiazole compound |
| CN101636469A (en) * | 2006-12-22 | 2010-01-27 | 罗利克有限公司 | Patternable liquid crystal polymer comprising thio-ether units |
| CN107015394A (en) * | 2017-03-24 | 2017-08-04 | 北京大学 | Trans electric-controlled light-regulating film with shielding near infrared light function and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| "The formation of a liquid crystalline main chain";J. LUB 等;《Liquid Crystals》;19981231;全文 * |
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