CN109087587A - A kind of flexible display substrates, preparation method and display device - Google Patents
A kind of flexible display substrates, preparation method and display device Download PDFInfo
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- CN109087587A CN109087587A CN201810902033.3A CN201810902033A CN109087587A CN 109087587 A CN109087587 A CN 109087587A CN 201810902033 A CN201810902033 A CN 201810902033A CN 109087587 A CN109087587 A CN 109087587A
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- articulamentum
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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
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
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- Engineering & Computer Science (AREA)
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Abstract
The present invention relates to display fields, in particular to flexible display substrates, preparation method and display device.The flexible display substrates the preparation method comprises the following steps: provide a bearing substrate；Articulamentum is formed on the bearing substrate, the articulamentum is made of the high temperature sensitive high molecular material of critical solution temperature type；Flexible substrate is formed on the articulamentum；Display device is prepared in the flexible substrate；Utilize articulamentum described in the Temperature Treatment lower than the high temperature sensitive high molecular material critical-temperature of critical solution temperature type, adhesion strength decline between the articulamentum and flexible substrate, the flexible substrate for being prepared with display device is stripped down from the bearing substrate for being formed with the articulamentum, obtains flexible display substrates.The preparation method of the flexible display substrates enables to flexible display substrates to can be easily separated with bearing substrate, and isolated uniformity is good, high production efficiency, to flexible display substrates without damage.
Description
Technical field
The present invention relates to display field, in particular to a kind of flexible display substrates, preparation method and display device.
Background technique
Flexible Displays (Flexible Display) technology has development by leaps and bounds in last decade, thus drives Flexible Displays
Quality of the device from the size of screen to display all has made great progress.Flexible display is also known as rollable display, is to use
Visual flexible panel is made and the bending deformed display device that constitutes in flexible material.Either it is on the verge of the CRT to disappear
(Cathode Ray Tube, cathode-ray tube) display, still now mainstream LCD (Liquid CrystalDisplay,
Liquid crystal display), inherently belong to traditional rigid display.Compared with common rigid display, Flexible Displays utensil
Have many advantages, such as: impact resistance, shock resistance are stronger；It is light-weight, small in size, it carries more convenient；Using similar to newspaper printing
The roll-to-roll process of technique, cost are cheaper etc..
The preparation method of flexible display generally comprises following steps: using the bearing substrate with hardness as support,
Flexible substrate is bonded on bearing substrate, then makes electronic component on flexible substrates, completes the production of flexible display substrates, most
Bearing substrate and flexible substrate are removed afterwards.
In entire preparation method, last removing is relatively difficult.Laser lift-off is generallyd use, that is, utilizes high energy laser beam
Scanning display device behind, so that aging occurs for the adhesion agent between bearing substrate and flexible substrate, sticks together performance decline, thus
Realize that bearing substrate and flexible substrate are removed.But this method needs superlaser beam scanning, production efficiency is low, removing
Uniformity is poor, and is easy to generate adverse effect to the performance and display effect of flexible display substrates.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of flexible display substrates, preparation method and display device, institute
The preparation method for stating flexible display substrates enables to flexible display substrates to can be easily separated with bearing substrate, isolated uniformity
It is good, high production efficiency, to flexible display substrates without damage.
The present invention provides a kind of preparation methods of flexible display substrates, comprising the following steps:
One bearing substrate is provided；
Articulamentum is formed on the bearing substrate, the articulamentum is by the high temperature sensitive high molecular material of critical solution temperature type
It is made；
Flexible substrate is formed on the articulamentum；
Display device is prepared in the flexible substrate；
It is connected using described in the Temperature Treatment lower than the high temperature sensitive high molecular material critical-temperature of critical solution temperature type
Layer, the adhesion strength decline between the articulamentum and flexible substrate will be prepared with the flexible substrate of display device from being formed
It states and is stripped down on the bearing substrate of articulamentum, obtain flexible display substrates.
Preferably, the critical-temperature of the high temperature sensitive high molecular material of critical solution temperature type is -20 DEG C~10 DEG C.
Preferably, the high temperature sensitive high molecular material of critical solution temperature type is polystyrene-polyisoprene, polyoxygenated
The copolymer of ethylene-polypropylene oxide, polyisobutene-dimethyl silicone polymer, acryloyl group glycine amide and acrylonitrile or
Poly dimethyl aminopropyl methacrylamide-b- [the poly- second two of poly- 2- (2- methoxy ethoxy) ethylmethyl acrylate-co-
Alcohol methacrylate.
Preferably, the articulamentum with a thickness of 0.5~5 micron.
It is preferably, described to form articulamentum on the bearing substrate specifically:
The high temperature sensitive high molecular material of critical solution temperature type is dissolved in organic solvent, solution is formed；
The solution is coated on bearing substrate, by dry solidification, forms the articulamentum.
Preferably, the material of the flexible substrate is polyimides, polyethylene, polypropylene, polystyrene, poly- terephthaldehyde
Sour glycol ester or polyethylene naphthalate.
Preferably, the material of the bearing substrate is polyvinyl chloride, acrylic, glass or polyester.
Preferably, the articulamentum includes multiple subelements arranged side by side, independent, between existing between the subelement
Gap.
The present invention provides a kind of flexible display substrates, and the preparation method makes to obtain by adopting the above technical scheme.
The present invention also provides a kind of display devices, including flexible display substrates described in above-mentioned technical proposal.
Compared with prior art, the present invention is using the temperature sensitive high molecular material of high critical solution temperature (UCST) type as connection
Layer, this kind of macromolecule typically contains the polar group that can be associated, and in temperature high-critical temperature, does not occur in strand
Association, molecule is in extended state at this time；And when temperature is lower than critical-temperature, then it forms Intramolecular association or hydrogen bond is formed
It closes.Macromolecular chain collapses, compact together, so that articulamentum and the adhesion strength of flexible substrate are deteriorated, uses physics at this time
Method can separate flexible substrate with bearing substrate, at low cost, high-efficient, and to flexible display substrates without damage.In addition,
The articulamentum separated can also be reused, and production cost is reduced.
Detailed description of the invention
Fig. 1 shows the preparation flow figures of the flexible display substrates of one embodiment of the invention.
Specific embodiment
For a further understanding of the present invention, the preferred embodiment of the invention is described below with reference to embodiment, still
It should be appreciated that these descriptions are only further explanation the features and advantages of the present invention, rather than limiting the invention.
Embodiment of the invention discloses a kind of preparation methods of flexible display substrates, include the following steps, referring specifically to
Fig. 1:
One bearing substrate is provided；
Articulamentum is formed on the bearing substrate, the articulamentum is by the high temperature sensitive high molecular material of critical solution temperature type
It is made；
Flexible substrate is formed on the articulamentum；
Display device is prepared in the flexible substrate；
It is connected using described in the Temperature Treatment lower than the high temperature sensitive high molecular material critical-temperature of critical solution temperature type
Layer, the viscosity decline between the articulamentum and flexible substrate are described from being formed with by the flexible substrate for being prepared with display device
It is stripped down on the bearing substrate of articulamentum, obtains flexible display substrates.
Temperature sensitive high molecular material is chiefly used in solution before this, and there is no the precedents being applied in display base plate.Present invention sieve
Multiple material is selected, articulamentum is made by the high temperature sensitive high molecular material of critical solution temperature type in final choice.This kind of macromolecule one
As do not associate in strand containing the polar group that can associate in temperature high-critical temperature, at this time at molecule
In extended state；And when temperature is lower than critical-temperature, then form Intramolecular association or hydrogen bond association.Macromolecular chain collapses
It collapses, it is compact together, so that articulamentum and the adhesion strength of flexible substrate are deteriorated, it at this time can be by flexible substrate using physical method
It is separated with bearing substrate, it is at low cost, it is high-efficient, and to flexible display substrates without damage.
The preparation method of flexible display substrates of the present invention described further below:
Step S1: a bearing substrate is provided；
Present invention particular/special requirement no for the selection of bearing substrate has certain hardness and can play a supporting role
Substrate.The material of the bearing substrate is preferably polyvinyl chloride, acrylic, glass or polyester.
Step S2: articulamentum is formed on the bearing substrate, the articulamentum is by the high temperature sensitive height of critical solution temperature type
Molecular material is made；
It is preferably, described to form articulamentum on the bearing substrate specifically:
The high temperature sensitive high molecular material of critical solution temperature type is dissolved in organic solvent, solution is formed；
The solution is coated on bearing substrate, by dry solidification, forms the articulamentum.
Due to being used in display device, the articulamentum matches with other structures needs, and the preparation of articulamentum
It cannot influence the performance of other structures.In the present invention, the stagnation temperature of the high temperature sensitive high molecular material of critical solution temperature type
Preferably -20 DEG C~10 DEG C, more preferably -10 DEG C~10 DEG C of degree.
The high temperature sensitive high molecular material of critical solution temperature type is preferably polystyrene-polyisoprene, polyoxyethylene
The copolymer of alkene-polypropylene oxide, polyisobutene-dimethyl silicone polymer, acryloyl group glycine amide and acrylonitrile or poly-
Dimethyl aminopropyl Methacrylamide-b- [poly- 2- (2- methoxy ethoxy) ethylmethyl acrylate-co- polyethylene glycol
Methacrylate].
In view of the caking property of the articulamentum, and the convenience of removing bearing substrate, it is preferable that the articulamentum
With a thickness of 0.5~5 micron.
The articulamentum can be continuous film layer, and surface area is equal with flexible substrate surface area；Or
Preferably, the articulamentum includes multiple subelements arranged side by side, independent, between existing between the subelement
Gap.
Step S3: flexible substrate is formed on the articulamentum；
The material of the flexible substrate is preferably polyimides, polyethylene, polypropylene, polystyrene, poly terephthalic acid
Glycol ester or polyethylene naphthalate.
Step S4；Utilize the Temperature Treatment institute for being lower than the high temperature sensitive high molecular material critical-temperature of critical solution temperature type
Articulamentum is stated, the decline of adhesion strength between the articulamentum and flexible substrate will be prepared with the flexible substrate of display device from shape
At stripping down on the bearing substrate for having the articulamentum, flexible display substrates are obtained.
In ambient temperature high molecular material critical-temperature temperature sensitive lower than high critical solution temperature type, the height of the articulamentum
Strand collapses, and tightly gathers together, and therefore, the adhesion strength between the articulamentum and flexible substrate is deteriorated, flexible substrate
It can be separated easily with the bearing substrate for being formed with articulamentum.
The embodiment of the invention discloses a kind of flexible display substrates, by adopting the above technical scheme preparation method production
It obtains.
The present invention can also include a kind of default substrate, and the default substrate includes bearing substrate, articulamentum and flexible liner
Bottom, the articulamentum are made of the high temperature sensitive high molecular material of critical solution temperature type.
It can continue to prepare display device on the default substrate, finally using lower than the high critical solution temperature type temperature
Articulamentum described in the Temperature Treatment of quick high molecular material critical-temperature will be prepared with the flexible substrate of display device from being formed
It states and is stripped down on the bearing substrate of articulamentum, obtain flexible display substrates.
The embodiment of the present invention also discloses a kind of display device, including Flexible Displays base as described in the above technical scheme
Plate.The display device can be with are as follows: TV, display, Digital Frame, mobile phone, tablet computer etc. are any having a display function
Products or components, wherein the display device further includes flexible circuit board, printed circuit board and backboard.
The above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of preparation method of flexible display substrates, which comprises the following steps:
One bearing substrate is provided；
Articulamentum is formed on the bearing substrate, the articulamentum is by the high temperature sensitive high molecular material system of critical solution temperature type
At；
Flexible substrate is formed on the articulamentum；
Display device is prepared in the flexible substrate；
Utilize articulamentum described in the Temperature Treatment lower than the high temperature sensitive high molecular material critical-temperature of critical solution temperature type, institute
The adhesion strength decline between articulamentum and flexible substrate is stated, by the flexible substrate for being prepared with display device from being formed with the connection
It is stripped down on the bearing substrate of layer, obtains flexible display substrates.
2. preparation method according to claim 1, which is characterized in that the high temperature sensitive macromolecule material of critical solution temperature type
The critical-temperature of material is -20 DEG C~10 DEG C.
3. preparation method according to claim 1, which is characterized in that the high temperature sensitive macromolecule material of critical solution temperature type
Material is polystyrene-polyisoprene, polyethylene glycol oxide-polypropylene oxide, polyisobutene-dimethyl silicone polymer, acryloyl
Copolymer or poly dimethyl aminopropyl methacrylamide-b- [poly- 2- (the 2- methoxyl group second of base glycine amide and acrylonitrile
Oxygroup) ethylmethyl acrylate-co- polyethylene glycol methacrylate-styrene polymer.
4. preparation method according to claim 1, which is characterized in that the articulamentum with a thickness of 0.5~5 micron.
5. preparation method according to claim 1, which is characterized in that described to form articulamentum tool on the bearing substrate
Body are as follows:
The high temperature sensitive high molecular material of critical solution temperature type is dissolved in organic solvent, solution is formed；
The solution is coated on bearing substrate, by dry solidification, forms the articulamentum.
6. preparation method according to claim 1, which is characterized in that the material of the flexible substrate is polyimides, gathers
Ethylene, polypropylene, polystyrene, polyethylene terephthalate or polyethylene naphthalate.
7. preparation method according to claim 1, which is characterized in that the material of the bearing substrate is polyvinyl chloride, Asia
Gram force, glass or polyester.
8. preparation method according to claim 1, which is characterized in that the articulamentum includes multiple arranged side by side, only
Vertical subelement, there are gaps between the subelement.
9. a kind of flexible display substrates, which is characterized in that using the preparation method system as described in any one of claim 1-8
It obtains.
10. a kind of display device, which is characterized in that including flexible display substrates as claimed in claim 9.
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| CN201810902033.3A CN109087587B (en) | 2018-08-09 | 2018-08-09 | Flexible display substrate, preparation method thereof and display device |
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|---|---|---|---|
| CN201810902033.3A CN109087587B (en) | 2018-08-09 | 2018-08-09 | Flexible display substrate, preparation method thereof and display device |
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| CN109087587A true CN109087587A (en) | 2018-12-25 |
| CN109087587B CN109087587B (en) | 2020-11-06 |
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| CN110071231A (en) * | 2019-06-13 | 2019-07-30 | 京东方科技集团股份有限公司 | Firm PI substrate prevents the method for warpage and the production method of display panel |
| CN111530310A (en) * | 2020-04-30 | 2020-08-14 | 曲靖师范学院 | Preparation method of reversed-phase high-critical-dissolution-temperature type temperature-sensitive polyacrylonitrile separation membrane |
| CN111785672A (en) * | 2020-06-02 | 2020-10-16 | 芜湖长信科技股份有限公司 | Flexible touch screen separation method |
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| CN111530310A (en) * | 2020-04-30 | 2020-08-14 | 曲靖师范学院 | Preparation method of reversed-phase high-critical-dissolution-temperature type temperature-sensitive polyacrylonitrile separation membrane |
| CN111530310B (en) * | 2020-04-30 | 2022-03-22 | 曲靖师范学院 | Preparation method of reversed-phase high-critical-dissolution-temperature type temperature-sensitive polyacrylonitrile separation membrane |
| CN111785672A (en) * | 2020-06-02 | 2020-10-16 | 芜湖长信科技股份有限公司 | Flexible touch screen separation method |
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| CN109087587B (en) | 2020-11-06 |
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