CN112662259A - Water-soluble material, preparation method of flexible layer and application of flexible layer - Google Patents
Water-soluble material, preparation method of flexible layer and application of flexible layer Download PDFInfo
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- CN112662259A CN112662259A CN202011391855.3A CN202011391855A CN112662259A CN 112662259 A CN112662259 A CN 112662259A CN 202011391855 A CN202011391855 A CN 202011391855A CN 112662259 A CN112662259 A CN 112662259A
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- water
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- layer
- soluble material
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- 239000002195 soluble material Substances 0.000 title claims abstract description 42
- 238000002360 preparation method Methods 0.000 title abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims abstract description 44
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000376 reactant Substances 0.000 claims abstract description 15
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims abstract description 10
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims abstract description 8
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims abstract description 8
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims abstract description 8
- 239000001361 adipic acid Substances 0.000 claims abstract description 5
- 235000011037 adipic acid Nutrition 0.000 claims abstract description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims abstract description 4
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 20
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 235000015165 citric acid Nutrition 0.000 description 6
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009967 tasteless effect Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- -1 and the like Chemical compound 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005401 electroluminescence Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000001509 sodium citrate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 235000019263 trisodium citrate Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a water-soluble material, a preparation method of a flexible layer and application of the flexible layer, wherein the water-soluble material comprises a mixed material of a reactant and water-soluble molecules, and the water-soluble molecules comprise at least one of polyvinylpyrrolidone and polyvinylpyrrolidone; the material of the reactant comprises at least one of citric acid, adipic acid and the like and sodium bicarbonate. The water-soluble material, the preparation method of the flexible layer and the application of the water-soluble material have the beneficial effects that the water-soluble material can release a large amount of gas in a high-humidity environment, and when the water-soluble material is applied to the preparation method of the flexible layer, the flexible layer and the hard substrate can be separated by the characteristic that the water-soluble material releases a large amount of gas, so that the complete flexible layer can be obtained without adopting a laser stripping technology.
Description
Technical Field
The application relates to the field of chemistry, in particular to a preparation method and application of a water-soluble material and a flexible layer.
Background
With the development of science and technology and the progress of society, people increasingly depend on information exchange, transmission and the like. Display devices, particularly LCDs, have become a focus of more and more attention as a main carrier and material base for information exchange and transmission, and are widely used in the aspects of work and life. According to the scientific law, the updating and upgrading speed of an object is influenced by the attention and the utilization rate of the object obviously, and the display technology needs to have the updating speed of 'change every day' in the information explosion age.
In the past decades, LCDs have been used as a substitute for displays, and in recent years, new display technologies such as OLED electroluminescence, laser display, Micro LED, etc. have come out and are becoming replaced. Compared with the traditional LCD display, the important difference of the OLED display, the Micro LED display and the like is the flexibility of the device, the special surface is only adjusted in shape, and the substrate material to the structural design and the like are greatly broken through.
The core of the flexible display technology lies in using flexible peelable substrate material and process technology, at present, mainly used y (yellow)/c (color) PI material is coated on the surface of a hard glass substrate to be used as a substrate to complete the subsequent display device process, and finally, a laser peeling mode is adopted to realize the flexible display device, and the laser peeling has the defects of long process time, high heat energy, easy damage to the PI substrate and corresponding circuits and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a water-soluble material, a preparation method of a flexible layer and application of the flexible layer, and aims to solve the technical problem that the flexible layer is damaged in the process of peeling off the flexible layer in the prior art.
The technical scheme for solving the technical problems is as follows: the invention provides a water-soluble material which is characterized by comprising a mixed material of a reactant and water-soluble molecules, wherein the material of the water-soluble molecules comprises at least one of polyvinylpyrrolidone and polyvinylpyrrolidone; the material of the reactant comprises at least one of citric acid, adipic acid and the like and sodium bicarbonate.
Further, the ratio of the reactant to the water soluble molecule is 1: 10-1: 1.
the invention also provides a preparation method of the flexible layer, which comprises the following steps:
providing a substrate;
coating a layer of the water-soluble material as claimed in claim 1 or 2 on one side surface of the substrate to form a sacrificial layer;
a flexible material is coated on the substrate and the sacrificial layer.
Further, after the flexible layer preparation step, the method further comprises the following steps:
cutting the flexible material along the peripheral edges of the sacrificial layer;
placing the flexible material and the substrate under moisture conditions;
and separating the flexible material from the sacrificial layer, wherein the separated flexible material is the flexible layer.
Further, the air humidity of the water vapor condition is 50% to 99%.
Further, the thickness of the sacrificial layer is 100nm-5000 nm.
Further, a gap is formed between the edge of the sacrificial layer and the edge of the substrate.
Further, the value of the gap is 50um-100 nm.
Further, the material of the flexible layer comprises a polyimide material.
The invention also provides a flexible layer, and the flexible layer is prepared by the preparation method.
The invention has the beneficial effects that the water-soluble material can release a large amount of gas in a high-humidity environment, when the water-soluble material is applied to the preparation method of the flexible layer, the flexible layer and the hard substrate can be separated by the characteristic that the water-soluble material releases a large amount of gas, so that the complete flexible layer can be obtained without adopting a laser stripping technology, the gas released by the water-soluble material is carbon dioxide gas which is colorless and tasteless and harmless to a human body or the atmospheric environment, the gas released by the water-soluble material can be discharged into the atmosphere, a waste gas treatment device is not required to be added, the cost cannot be increased, the water-soluble material can release the gas only in the high-humidity environment, the reaction condition is simple, the implementation is easy, and the mass production can be realized. The surface of the flexible layer prepared by the characteristic that the water-soluble material releases a large amount of gas is smooth and has no crack, and the yield is extremely high.
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 plan view of a sacrificial layer and a hard substrate in an embodiment.
Figure 2 is a side view of a flexible material, a sacrificial layer, and a rigid substrate in an embodiment.
Fig. 3 is a side view of the cut flexible material, sacrificial layer, and rigid substrate of an embodiment.
Fig. 4 is a schematic view of a flexible layer in an embodiment.
Reference numerals in the figures
A flexible layer 10; a sacrificial layer 20; a hard substrate 30.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Examples
In this embodiment, the water-soluble material of the present invention is a mixture of a reactant and a water-soluble molecule, where the water-soluble molecule material includes at least one of polyvinylpyrrolidone and polyvinylpyrrolidone, the reactant material includes at least one of citric acid, adipic acid, and sodium bicarbonate, and a ratio of the reactant to the water-soluble molecule is 1: 10-1: 1, the water-soluble material is water-sensitive type gap molecule gasification material, and it can produce a large amount of gas under the steam environment, and the time that the water-soluble material produced gas under the steam environment is shorter, can produce a large amount of gas in the twinkling of an eye.
As shown in fig. 2, in this embodiment, the flexible panel of the present invention includes a flexible layer 10, where the flexible layer 10 is made of the water-soluble material, and the flexible layer 10 has high flexibility, which results in that the flexible layer 10 cannot be separately made during the preparation and molding process, the flexible material needs to be coated on a hard substrate 30 first, after the flexible material is cured and molded, the flexible material is peeled off by a peeling technique, and the peeled flexible material is the flexible layer 10 in this embodiment.
Because the existing peeling technology generally adopts a laser peeling technology, which peels the flexible layer 10 from the hard substrate 30 through heat energy generated by a laser beam, but because the flexible layer 10 generally adopts a polyimide material, which is relatively sensitive to thermal stress, the flexible layer 10 is damaged by excessively high thermal stress, so that cracks or even fractures are generated in the peeling process of the flexible layer 10, thereby reducing the yield of the flexible layer 10.
In this embodiment, a sacrificial layer 20 is prepared between the flexible layer 10 and the hard substrate 30, and the sacrificial layer 20 is made of the water-soluble material, wherein a reactant of the water-soluble material can facilitate film formation of the water-soluble material on the hard substrate 30, so that the flexible material can be coated on the sacrificial layer 20 in the following process without affecting the flatness of the flexible layer 10.
As shown in fig. 1, specifically, the sacrificial layer 20 is disposed at a middle position of the hard substrate 30, and a thickness of the sacrificial layer 20 ranges from 100nm to 5um, in this embodiment, a thickness of the sacrificial layer 20 is 2 um.
The length of the sacrificial layer 20 is smaller than that of the hard substrate 30, and specifically, the length of the sacrificial layer 20 is 50um smaller than that of the hard substrate 30.
The width of the sacrificial layer 20 is smaller than that of the hard substrate 30, and specifically, the width of the sacrificial layer 20 is 50um smaller than that of the hard substrate 30.
The length and width of the sacrificial layer 20 are less than those of the hard substrate 30, when the subsequent flexible material is coated, the flexible material is partially coated on the edge of the hard substrate 30, and the flatness and uniformity of the flexible material can be well guaranteed because the adhesive force between the flexible material and the hard substrate is larger.
When the flexible material completely covers the hard substrate 30 and the sacrificial layer 20 and the flexible material is completely cured, the hard substrate 30 is cut by laser, specifically, as shown in fig. 3, the laser cuts along the outer edge of the sacrificial layer 20 to remove the flexible material attached to the hard substrate 30 and the hard substrate 30, and only the flexible material attached to the sacrificial layer 20 remains, at this time, the flexible material is only connected to the sacrificial layer 20, and only the flexible material needs to be separated from the sacrificial layer 20, so that the flexible layer 10 can be obtained.
As shown in fig. 4, after the hard substrate 30 is cut, the remaining hard substrate 30 is placed in a high humidity environment, so that the sacrificial layer 20 can contact with water vapor, in this embodiment, the humidity of the high humidity environment is 60%, in other preferred embodiments of this embodiment, the humidity of the high humidity environment is between 50% and 90%, since the sacrificial layer 20 is made of the water-soluble material, and the reactant thereof is at least one of citric acid, adipic acid, and the like, and sodium bicarbonate, in this embodiment, the reactant of the water-soluble material is citric acid (C6H8O7 and sodium bicarbonate), in the high humidity environment, the following reaction occurs:
C6H8O7(aq)+3NaHCO3(aq)→Na3C6H5O7(aq)+3H2O(l)+3CO2(g)。
according to the above reaction formula, the reactant in the material of the sacrificial layer 20 can release a large amount of gas (carbon dioxide) in a high humidity environment, and the adhesive force between the sacrificial layer 20 and the flexible layer 10 is reduced, so that the flexible layer 10 is directly separated from the sacrificial layer 20, the flexible layer 10 does not need to be peeled off by laser or other technical means, the flexible layer 10 is prevented from being damaged by laser or other technical means, the yield of the flexible layer 10 is improved, and the preparation cost of the flexible panel is reduced.
In particular, the gas generated by the water-soluble material of the sacrificial layer 20 in a high humidity environment is the most common carbon dioxide gas in the atmosphere, is colorless and tasteless, has no harm to the human body, does not cause atmospheric pollution, avoids the step of waste treatment, further reduces the cost, does not cause environmental pollution, and does not cause damage to the body of an operator.
In order to better explain the present invention, this embodiment further provides a method for preparing a flexible layer, which includes the following specific steps:
s1 provides a substrate, which is a hard substrate having a certain hardness and capable of carrying an object.
S2 is in one side surface coating of base plate water-soluble material forms the sacrificial layer, the thickness of sacrificial layer is 100nm-5um, just the edge of sacrificial layer with a clearance has between the edge of base plate, the value in clearance is 50um-100 nm.
S3 coating a flexible material on the substrate and the sacrificial layer.
S4 cutting the flexible material along the peripheral edges of the sacrificial layer;
s5 exposing the flexible material and the substrate to a moisture condition and separating the flexible material from the sacrificial layer, the separated flexible material being the flexible layer, wherein the moisture condition has an air humidity of 50% to 99%.
The embodiment has the beneficial effects that the water-soluble material, the preparation method of the flexible layer and the application of the water-soluble material can release a large amount of gas in a high humidity environment, when the water-soluble material is applied to the preparation method of the flexible layer, the flexible layer and the hard substrate can be separated through the characteristic that the water-soluble material releases a large amount of gas, so that the complete flexible layer can be obtained without adopting a laser stripping technology, the gas released by the water-soluble material is carbon dioxide gas which is colorless and odorless and has no harm to a human body or the atmospheric environment, the gas released by the water-soluble material can be discharged into the atmosphere, a waste gas treatment device is not required to be added, the cost is not increased, the water-soluble material can release gas only in the high humidity environment, the reaction condition is simple, the implementation is easy, and the mass production can be. The surface of the flexible layer prepared by the characteristic that the water-soluble material releases a large amount of gas is smooth and has no crack, and the yield is extremely high.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The principle and the implementation of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A water-soluble material, comprising
The mixed material of the reactant and the water soluble molecule, wherein the material of the water soluble molecule comprises at least one of polyvinylpyrrolidone and polyvinylpyrrolidone; the material of the reactant comprises at least one of citric acid, adipic acid and the like and sodium bicarbonate.
2. Water-soluble material according to claim 1,
the ratio of the reactant to the water soluble molecule is 1: 10-1: 1.
3. a method of making a flexible layer, comprising the steps of:
providing a substrate;
coating a layer of the water-soluble material as described in claim 1 on one side surface of the substrate to form a sacrificial layer;
a flexible material is coated on the substrate and the sacrificial layer.
4. The method for producing a flexible layer according to claim 3, further comprising, after the step of producing a flexible layer, the steps of:
cutting the flexible material along the peripheral edges of the sacrificial layer;
placing the flexible material and the substrate under moisture conditions;
and separating the flexible material from the sacrificial layer, wherein the separated flexible material is the flexible layer.
5. A method of producing a flexible layer according to claim 4,
the moisture condition has an air humidity of 50% to 99%.
6. A method of producing a flexible layer according to claim 3,
the thickness of the sacrificial layer is 100nm-5000 nm.
7. A method of producing a flexible layer according to claim 3,
a gap is arranged between the edge of the sacrificial layer and the edge of the substrate.
8. A method of producing a flexible layer according to claim 7,
the value of the gap is 50um-100 nm.
9. A method of producing a flexible layer according to claim 3,
the material of the flexible layer comprises a polyimide material.
10. A flexible layer formed by the method of any one of claims 3-9.
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| CN202011391855.3A CN112662259A (en) | 2020-12-02 | 2020-12-02 | Water-soluble material, preparation method of flexible layer and application of flexible layer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811395A (en) * | 2012-11-14 | 2014-05-21 | 乐金显示有限公司 | Method of fabricating flexible display device |
| CN108365128A (en) * | 2018-01-19 | 2018-08-03 | 昆山国显光电有限公司 | Prepare the method and flexible display device of flexible display device |
| CN111518538A (en) * | 2020-04-26 | 2020-08-11 | 深圳市华星光电半导体显示技术有限公司 | Preparation method of light-emitting film, light-emitting film and display device |
| CN111697022A (en) * | 2020-07-08 | 2020-09-22 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
-
2020
- 2020-12-02 CN CN202011391855.3A patent/CN112662259A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103811395A (en) * | 2012-11-14 | 2014-05-21 | 乐金显示有限公司 | Method of fabricating flexible display device |
| CN108365128A (en) * | 2018-01-19 | 2018-08-03 | 昆山国显光电有限公司 | Prepare the method and flexible display device of flexible display device |
| CN111518538A (en) * | 2020-04-26 | 2020-08-11 | 深圳市华星光电半导体显示技术有限公司 | Preparation method of light-emitting film, light-emitting film and display device |
| CN111697022A (en) * | 2020-07-08 | 2020-09-22 | 深圳市华星光电半导体显示技术有限公司 | Display panel and display device |
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Application publication date: 20210416 |