CN111016478A - Method for manufacturing perovskite color conversion film - Google Patents
Method for manufacturing perovskite color conversion film Download PDFInfo
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- CN111016478A CN111016478A CN201911110271.1A CN201911110271A CN111016478A CN 111016478 A CN111016478 A CN 111016478A CN 201911110271 A CN201911110271 A CN 201911110271A CN 111016478 A CN111016478 A CN 111016478A
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- perovskite
- color conversion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
Abstract
A method for manufacturing a perovskite color conversion film, comprising: the method comprises the following steps of providing a screen plate, arranging perovskite slurry on the screen plate, and printing the perovskite slurry on the screen plate on a substrate in a patterning mode in a screen printing mode; a curing step of curing the perovskite paste on the substrate to form the perovskite color conversion film; compared with the existing photoetching or ink-jet printing manufacturing process, the manufacturing process of the perovskite color conversion film is greatly simplified, raw materials are saved, and the manufacturing cost is reduced.
Description
Technical Field
The application relates to the technical field of display panels, in particular to a manufacturing method of a perovskite color conversion film.
Background
In recent years, organic-inorganic hybrid perovskites have become star materials in the photoelectric field due to excellent photoelectric properties (such as high carrier mobility, long carrier diffusion distance, high fluorescence quantum efficiency, adjustable optical band gap, bipolar carrier transmission characteristics and the like), and particularly in the display field, the perovskite materials have relatively narrow half-peak width (the half-peak width is less than 30nm), so that the color purity of the perovskite materials is relatively high, the color gamut is relatively high, the perovskite materials can generally reach NTSC (standard grade) of more than 100%, the perovskite materials are very suitable for the development of display technology, and the perovskite materials are expected to play an important role in the aspect of display technology.
Currently, perovskites have been applied to color conversion film materials, and existing perovskite color conversion films are prepared by photolithography or inkjet printing processes. As is known, the photolithography process requires the use of an expensive photomask and the application, exposure and development processes, and is complex and costly to manufacture, and the utilization of perovskite materials is not high, so that more raw materials are washed away by the developer. The ink jet printing process has very high requirements on printing equipment, the problem of unstable continuous printing ink drops often occurs, large-size panels are difficult to print, and meanwhile, large-scale batch production is not easy to realize.
Disclosure of Invention
The embodiment of the application provides a manufacturing method of a perovskite color conversion film, and aims to solve the problems that the process is complex, the manufacturing cost is high, and large-scale batch production is not easy to realize in the process of manufacturing the perovskite color conversion film by photoetching or ink-jet printing.
The embodiment of the application provides a manufacturing method of a perovskite color conversion film, which comprises the following steps:
a printing step: providing a screen plate, arranging perovskite slurry on the screen plate, and printing the perovskite slurry on the screen plate on a substrate in a patterning mode in a screen printing mode;
and (3) curing: curing the perovskite paste on the substrate to form the perovskite color conversion film.
According to a preferred embodiment of the present application, the curing step includes curing by baking or ultraviolet irradiation.
According to a preferred embodiment of the present application, the baking and curing method comprises:
the temperature of the baking and curing is 50-100 ℃, and the time of the baking and curing is 3-30 minutes.
According to a preferred embodiment of the present application, the perovskite slurry comprises a solvent, a perovskite material and a binder, wherein the concentration of the perovskite material in the perovskite slurry is 1% to 20%, and the mass fraction of the binder is 1% to 20%.
According to a preferred embodiment of the present application, before the curing step, the method further comprises
And respectively carrying out the printing step by adopting perovskite slurry with different colors so as to respectively carry out pattern printing on the substrate by adopting the perovskite slurry with different colors.
According to a preferred embodiment of the present application, the perovskite color conversion film includes at least one of a red perovskite color conversion film, a green perovskite color conversion film, and a blue perovskite color conversion film.
According to a preferred embodiment of the present application, the perovskite material in the red perovskite color conversion film is CH3NH3Pb(Br/I)3Or CsPb (Br/I)3The perovskite material in the green perovskite color conversion film is CH3NH3PbBr3Or CsPbBr3, wherein the perovskite material in the blue perovskite color conversion film is CH3NH3Pb(Br/Cl)3Or CsPb (Br/Cl)3。
According to a preferred embodiment of the present application, in the printing step, the mesh plate is provided with a mesh, and the pattern of the perovskite paste printed on the substrate corresponds to the mesh pattern on the mesh plate.
According to a preferred embodiment of the present application, when the mass fraction of the binder is 1% to 10%, before the printing step, the method further includes:
form the black barricade on the base plate, be equipped with on the black barricade and be used for setting up the opening of perovskite colour conversion membrane.
According to a preferred embodiment of the present application, the thickness of the perovskite color conversion film is 50nm to 50 um.
The beneficial effect of this application does: compared with the existing photoetching or ink-jet printing manufacturing process, the manufacturing process of the perovskite color conversion film is greatly simplified, raw materials are saved, and the manufacturing cost is reduced.
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 is a schematic flow chart of a method for manufacturing a perovskite color conversion film according to an embodiment of the present disclosure;
fig. 2 is a schematic process diagram of screen printing provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram illustrating the fabrication and formation of a perovskite color conversion film according to an embodiment of the present disclosure;
FIG. 4 is a schematic block diagram of a process for fabricating another perovskite color conversion film according to an embodiment of the present disclosure;
fig. 5 to fig. 6 are schematic flow-chart structures of another method for manufacturing a perovskite color conversion film according to an embodiment of the present disclosure.
Detailed Description
Specific structural and functional details disclosed herein are merely representative and are provided for purposes of describing example embodiments of the present application. This application may, however, be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, it is to be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship 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 device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and therefore should not 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, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.
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; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
The present application is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1 to 3, an embodiment of the present application provides a method for manufacturing a perovskite color conversion film, including the following steps:
step S20, a printing step: providing a screen plate 10, arranging perovskite slurry 20 on the screen plate 10, and printing the perovskite slurry 20 on the screen plate 10 on a substrate 30 in a patterning mode by adopting a screen printing mode;
step S30, curing step: the perovskite paste 20 on the substrate 30 is cured to form the perovskite color conversion film 40.
It will be appreciated that the perovskite slurry 20 includes at least a solvent, a perovskite material and a binder, of course, other desired materials (e.g., resins) may be added to the perovskite slurry 20 as may be desired, particularly, the solvent is one of butyrolactone (GBL), N-N Dimethylformamide (DMF) and dimethyl sulfoxide (DMSO), the concentration of the perovskite material in the perovskite slurry 20 is 1% to 20%, the mass fraction of the binder is 1% to 20%, in this embodiment, the thickness of the perovskite color conversion film 40 is 50nm to 50um, and specifically, when the perovskite slurry 20 includes only a solvent, a perovskite material and a binder, after the curing step, the thickness of the perovskite color conversion film 40 is about 50nm to 1um, when the perovskite paste 20 is further added with a resin, the thickness of the perovskite color conversion film 40 is about 1um to 50 um.
In this embodiment, as shown in fig. 2, in the printing step, the mesh 11 is provided on the screen plate 10, and the pattern of the perovskite paste 20 printed on the substrate 30 corresponds to the pattern of the mesh 11 on the screen plate 10; specifically, in order to ensure that the pattern of the perovskite paste 20 printed on the substrate 30 corresponds to the pattern of the mesh 11 on the screen plate 10 and does not flow, it is understood that the binder in the perovskite paste 20 is used to increase the viscosity of the perovskite paste 20, but the content of the binder in the perovskite paste 20 is higher, so in this embodiment, the mass fraction of the binder is 1% to 20%, specifically, when the mass fraction of the binder is greater than 10% and less than or equal to 20%, the perovskite paste 20 has a better viscosity and does not flow freely after being printed on the substrate 30, and when the mass fraction of the binder is 1% to 10%, the viscosity of the perovskite paste 20 is lower, printing directly on the substrate 30 is easy to flow, and in this case, as shown in fig. 4 to 6, before the printing step, the method further includes: step S10, form black barricade 50 on the base plate 30, be equipped with on the black barricade 50 and be used for setting up the opening 51 of perovskite colour conversion membrane 40 to the printing step will perovskite thick liquids 20 is directly printed in the opening 51 on the black barricade 50, prevents that perovskite thick liquids 20 from flowing and destroying the printing pattern, and it is worth noting that the material of black barricade 50 is black opaque black light-blocking material (the light resistance that contains carbon black), black barricade 50 can adopt multiple mode preparation, and is concrete, can adopt the mode of screen printing to make to need to solidify after printing.
In this embodiment, the curing step includes a baking curing or ultraviolet light curing mode, specifically, the baking curing mode includes: the baking and curing temperature is 50-100 ℃, and the baking and curing time is 3-30 minutes; in addition, in the ultraviolet light curing manner, a resin monomer needs to be added to the perovskite slurry 20, so that in the curing step, the resin monomer in the perovskite slurry 20 is polymerized and cured to generate a resin through ultraviolet light irradiation, and in addition, a manner of adding a UV glue may also be adopted, which is not described herein again.
It is to be noted that the perovskite color conversion film 40 includes at least one of a red perovskite color conversion film 40, a green perovskite color conversion film 40, and a blue perovskite color conversion film 40, and when only a single-color perovskite color conversion film 40 needs to be manufactured, only the perovskite color conversion film 40 of a desired color needs to be printed by one printing step; when it is desired to fabricate perovskite color conversion films 40 of a plurality of colors, the printing step is performed using perovskite pastes 20 of different colors, respectively, before the curing step, to pattern-print the perovskite pastes 20 of different colors on the substrate 30, respectively, it is understood that the perovskite pastes 20 of different colors have different patterns, and the printing may be performed using the screen 10 having different patterns of the mesh 11, respectively, and further, the target mesh 11 may be printed multiple times in one printing step according to the requirement of different film thicknesses of the perovskite color conversion films 40.
In the light emitting device, different forms of perovskite color conversion films 40 are required corresponding to different light emitting devices, when RGB full-color conversion films are required to be manufactured, the red perovskite color conversion film 40, the green perovskite color conversion film 40 and the blue perovskite color conversion film 40 are required to be manufactured on the substrate 30 in sequence, when the light emitting device is blue light, only the red perovskite color conversion film 40 and the green perovskite color conversion film 40 are required to be manufactured, and a light-transmitting film is manufactured at a position corresponding to the blue perovskite color conversion film 40 in the RGB full-color conversion film, so that the blue light emitted by the blue light emitting device passes through the light-transmitting film and is mixed with the light passing through the red perovskite color conversion film 40 and the green perovskite color conversion film 40 for display; specifically, the light-transmitting film is made of a resin material (such as acrylic resin or epoxy resin); wherein the perovskite material in the red perovskite color conversion film 40 is CH3NH3Pb(Br/I)3Or CsPb (Br/I)3The perovskite material in the green perovskite color conversion film 40 is CH3NH3PbBr3Or CsPbBr3, the perovskite material in the blue perovskite color conversion film 40 is CH3NH3Pb(Br/Cl)3Or CsPb (Br/Cl)3. In summary, the perovskite color conversion film 40 is manufactured by adopting the screen printing method, compared with the existing photoetching or ink-jet printing manufacturing process, the manufacturing process of the perovskite color conversion film 40 is greatly simplified, raw materials are saved, the manufacturing cost is reduced, in addition, in the screen printing process, the mesh 11 on the screen plate 10 can be adjusted in size and pattern according to actual needs, the screen printing method has better adaptability, and is suitable for batch manufacturing of perovskite color conversion films 40 of various sizes
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.
Claims (10)
1. A method for manufacturing a perovskite color conversion film is characterized by comprising the following steps:
a printing step: providing a screen plate, arranging perovskite slurry on the screen plate, and printing the perovskite slurry on the screen plate on a substrate in a patterning mode in a screen printing mode;
and (3) curing: curing the perovskite paste on the substrate to form the perovskite color conversion film.
2. The method of making a perovskite color conversion film according to claim 1, wherein the curing step comprises baking curing or ultraviolet light curing.
3. The method for producing the perovskite color conversion film according to claim 2, wherein the baking and curing are performed by:
the temperature of the baking and curing is 50-100 ℃, and the time of the baking and curing is 3-30 minutes.
4. The method for producing a perovskite color conversion film according to claim 1, wherein the perovskite slurry comprises a solvent, a perovskite material, and a binder, wherein the concentration of the perovskite material in the perovskite slurry is 1% to 20%, and the mass fraction of the binder is 1% to 20%.
5. The method of making a perovskite color conversion film as defined in claim 4, further comprising, before said curing step, the step of forming a perovskite color conversion film
And respectively carrying out the printing step by adopting perovskite slurry with different colors so as to respectively carry out pattern printing on the substrate by adopting the perovskite slurry with different colors.
6. The method of manufacturing a perovskite color conversion film according to claim 4, wherein the perovskite color conversion film comprises at least one of a red perovskite color conversion film, a green perovskite color conversion film, and a blue perovskite color conversion film.
7. The method for producing a perovskite color conversion film according to claim 6, wherein the perovskite material in the red perovskite color conversion film is CH3NH3Pb(Br/I)3Or CsPb (Br/I)3The perovskite material in the green perovskite color conversion film is CH3NH3PbBr3Or CsPbBr3, wherein the perovskite material in the blue perovskite color conversion film is CH3NH3Pb(Br/Cl)3Or CsPb (Br/Cl)3。
8. The method for producing a perovskite color conversion film according to claim 4, wherein in the printing step, the mesh plate is provided with a mesh, and the pattern of the perovskite paste printed on the substrate corresponds to the mesh pattern on the mesh plate.
9. The method for producing a perovskite color conversion film according to claim 8, wherein when the mass fraction of the binder is 1% to 10%, before the printing step, the method further comprises:
form the black barricade on the base plate, be equipped with on the black barricade and be used for setting up the opening of perovskite colour conversion membrane.
10. The method for producing a perovskite color conversion film according to claim 1, wherein the thickness of the perovskite color conversion film is 50nm to 50 μm.
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