CN107204398A - A kind of flexible display substrates and flexible display apparatus - Google Patents
A kind of flexible display substrates and flexible display apparatus Download PDFInfo
- Publication number
- CN107204398A CN107204398A CN201710491320.5A CN201710491320A CN107204398A CN 107204398 A CN107204398 A CN 107204398A CN 201710491320 A CN201710491320 A CN 201710491320A CN 107204398 A CN107204398 A CN 107204398A
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- Prior art keywords
- flexible display
- display substrates
- silicone polymer
- dimethyl silicone
- substrates
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
- H10K77/10—Substrates, e.g. flexible substrates
- H10K77/111—Flexible substrates
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2102/00—Constructional details relating to the organic devices covered by this subclass
- H10K2102/301—Details of OLEDs
- H10K2102/311—Flexible OLED
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
This application provides a kind of flexible display substrates and flexible display apparatus, flexible display substrates are made up of the polyurethane material for carrying out plastic deformation in response to Human Physiology temperature, realize by modes such as touches, deform upon the flexible display apparatus with flexible screen on human hand, and can fixed mask shape rapidly, flexible and rigid conversion can be controlled in Human Physiology temperature range, so as to obtain the ultra-thin flexible screen without mechanical structure.
Description
Technical field
The application is related to display field, more particularly to a kind of flexible display substrates and flexible display apparatus.
Background technology
QLED（Light emitting diode with quantum dots）Technology is as following Display Technique, with brightness height, fast response time, colour gamut
Extensively, more preferable HDR effects, it is considered to be the ultimate form of quantum Display Technique of future generation.OLED（Organic Light Emitting Diode）It is aobvious
Show technology also because have the advantages that self-luminous, wide viewing angle, almost infinite high contrast, compared with low power consumption, high reaction speed and
Receive significant attention.In order that display device portability is stronger, application scenarios are more rich, in recent years, flexible display technologies by
Researcher's attractes attention.But flexible display material, which presently, there are, applies predicament, i.e., generally when in use, it is intended that flexible display
Rigid or smooth, situations such as causing to show bad when otherwise use, and without using when wish flexible
Display is flexible, is easy to carry and folds.The occupation mode of our present so-called flexible screens is typically to use to pass through
Bulky mechanical structure control, influences product form, makes the portability of flexible display apparatus become to exist in name only, and mechanical structure
Unbalanced stress causes display mura to produce for a moment.
Main flow QLED schemes only exist the lifting to QLED efficiency in the industry at present, the parameter such as improving luminous efficiency, for soft
Not yet there is the protection of structure in property QLED, the problem of preparation technology and efficiency of actual are not considered.
The content of the invention
In view of this, the invention provides a kind of flexible display substrates and flexible display apparatus, Flexible Displays dress is realized
The conversion control between flexible and rigidity in Human Physiology temperature range is put, flexible screen can be changed by modes such as touches
Shape, and rapid fixed mask shape abandoned thick and heavy machinery and material is made.
The flexible display substrates of the present invention, it is characterised in that the substrate in response to Human Physiology temperature by carrying out moulding
The polyurethane material of deformation is made.The Tg of the polyurethane material is 32-39 DEG C, and the response temperature of material is in Human Physiology temperature
Within, flexible display substrates can carry out alteration of form on human hand.
Specific polyurethane material is the segmented copolymer of PEG-PCL-dimethyl silicone polymer.In order to
The need for meeting deformation, the present invention is controlled the segment of block copolymer within limits by special MOLECULE DESIGN,
And then control the Tg of material in certain temperature range.Wherein, in the segmented copolymer polyethylene glycol molecular weight control
System is in 1700-2750, and the molecular weight control of polycaprolactone is in 2700-4700, and the molecular weight control of dimethyl silicone polymer exists
4050-6800。
The segmented copolymer can be prepared by following preparation process, step one：By dimethyl silicone polymer solution
With polyglycol solution mixing, polycaprolactone solution is then added, is stirred under inert atmosphere protection；Step 2：Add
Isocyanates coupling agent solution, stirs under inert atmosphere protection；Step 3：Catalyst is added dropwise into above-mentioned system molten
Liquid, stirs under inert atmosphere protection；Step 4：Reaction system is placed under certain reaction temperature, inert atmosphere protection
Environment reacted, the reaction time is 10-20h, obtains many blocks of PEG-PCL-dimethyl silicone polymer
Copolymer.The block mean molecule quantity of segmented copolymer is different and different because the addition of raw material and coupling agent, can pass through
Above-mentioned parameter is adjusted to obtain different Tg segmented copolymer.
Wherein, the mol ratio of the addition of the dimethyl silicone polymer, polyethylene glycol and polycaprolactone is 1:0.8-
1.2:The mol ratio of 0.4-0.6, isocyanates coupling agent and dimethyl silicone polymer is 1：1, catalyst and polycaprolactone
Mol ratio is 1：1.The isocyanates coupling agent is 1,6- HDIs, and the catalyst is tin dilaurate two
Butyl tin, the reaction temperature is 90 DEG C, and the inert atmosphere is nitrogen.The Tg of the thus obtained segmented copolymer is
33-39℃。
Present invention also offers a kind of flexible display apparatus, including above-mentioned flexible display substrates and it is placed on the substrate
Flexible display screen.Flexible display screen can be QLED or OLED.
A kind of method for preparing above-mentioned flexible display apparatus, comprises the following steps：Made on the flexible display substrates
One thermal insulation layer；The flexible display screen is fixed on the flexible display substrates.
The present invention in response to Human Physiology temperature by by carrying out the Flexible Displays that the polyurethane material of plastic deformation is made
Substrate, is realized by modes such as touches, deforms upon the flexible display apparatus with flexible screen on human hand, and can be fast
Fast fixed mask shape, you can flexible and rigid conversion is controlled in Human Physiology temperature range, so as to obtain ultra-thin inorganic
The flexible screen of tool structure；Meanwhile, in order that response temperature meets and uses needs, inventor has also carried out spy to polyurethane material
Different MOLECULE DESIGN.
Brief description of the drawings
Accompanying drawing herein is merged in specification and constitutes the part of this specification, shows the implementation for meeting the present invention
Example simultaneously is used to explain principle of the invention together with specification.
Fig. 1 is the composition schematic diagram of flexible display apparatus；
Fig. 2 is the thermal response process schematic of flexible display apparatus.
Embodiment
In order that technical problems, technical solutions and advantageous effects to be solved by the present invention are more clearly understood, below in conjunction with
Embodiment and Figure of description, the present invention will be described in further detail.It should be understood that specific embodiment described herein
Only to explain the present invention, it is not intended to limit the present invention.
The present invention uses polyethylene glycol/polycaprolactone/dimethyl silicone polymer for raw material, is 2000 from molecular weight
PEG（Polyethylene glycol）, molecular weight be 2000 PCL（Polycaprolactone）, molecular weight be 2000 PDMS (dimethyl silicone polymer),
95% DBT (dibutyl tin laurates）, (HDI) 1,6- HDIs（98%）As coupling agent, solvent is used
Chloroform, toluene and hexane.Produced using random polymerization（PEG/PCL/PDMS urethanes）Mode, formed different molecular
The block copolymer of amount, so as to adjust the Tg of substrate.
Embodiment：
1st, by above-mentioned PDMS chloroformic solution（10%）With PEG methanol solution（10%）Equal proportion mixing is carried out, is added a certain amount of
PCL toluene solution（10%）, in N2Stirred under protection；
2nd, by the use of the toluene solution for adding a certain amount of HDI as coupling agent, stir in a nitrogen environment；
3rd, a certain amount of DBT toluene solution is added dropwise into above-mentioned system, stirs under nitrogen protection；
4th, by reaction system be placed in 90 DEG C, the environment under inert atmosphere protection reacted, the reaction time is 10-20h, is obtained
PEG/PCL/PDMS urethanes）Copolymer；
5th, PEG molecular weight is in 1700-2750 in above-mentioned copolymer, and PCL molecular weight is in 2700-4700, PDMS molecular weight
In 4050-6800, block mean molecule quantity depends on the addition of raw material and the addition of different coupling agents；
6th, block copolymer is subjected to hot pressing processing, is processed into smooth substrate 1；
7th, one layer of thermal insulation layer is made on substrate, prevents screen temperature from influenceing substrate thermo-responsive, this layer can be effectively insulating
The materials such as gel；
8th, the flexible display screens such as QLED or OLED 2 are fitted solidification by the fixation such as gluing with aforesaid substrate, obtain as
Flexible display apparatus shown in Fig. 1；
9th, the flexible QLED or OLED display obtained can carry out deformation under physiological temp, can solidify after cooling, enter
Row thermal response process as shown in Figure 2；Flexible display apparatus is changed into flexible in response to Human Physiology temperature, can do change in shape,
It is changed into rigidity, fixed required screen shape after cooling.
Material substrate prepared by embodiment method, when controlling block copolymer segments within limits, can be controlled
Tg processed is within physiological temp（32-38 DEG C can adjust）, and thermal response speed is fast, and thermo-responsive temperature, can be compared with 1 DEG C
Fast reaction simultaneously changes shape, and rigidity is higher after sizing, and modulus, can preferably supporting display screen curtain shape in more than 1.3Gpa
Do not change.By substrate layer of the substrate as flexible QLED or OLED, the flexible display screen of controlled shape can be made
Curtain, and abandoned thick and heavy machinery and be made material, product appearance is lifted, thickness of displays is reduced, strengthens product competitiveness.
It the above is only the embodiment of the present invention, it is noted that come for those skilled in the art
Say, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of flexible display substrates, it is characterised in that the substrate in response to Human Physiology temperature by carrying out plastic deformation
Polyurethane material be made.
2. flexible display substrates as claimed in claim 1, it is characterised in that：The Tg of the polyurethane material is 32-39 DEG C.
3. flexible display substrates as claimed in claim 2, it is characterised in that：The polyurethane material be polyethylene glycol oneself
The segmented copolymer of lactone-dimethyl silicone polymer.
4. flexible display substrates as claimed in claim 3, it is characterised in that：Point of polyethylene glycol in the segmented copolymer
The control of son amount is controlled in 2700-4700, the molecular weight control of dimethyl silicone polymer in 1700-2750, the molecular weight of polycaprolactone
System is in 4050-6800.
5. the flexible display substrates as described in claim any one of 3-4, it is characterised in that：The preparation of the segmented copolymer
Method comprises the following steps, step one：Dimethyl silicone polymer solution and polyglycol solution are mixed, then adds and gathers in oneself
Ester solution, stirs under inert atmosphere protection；Step 2：Isocyanates coupling agent solution is added, is protected in inert atmosphere
Stirred under shield；Step 3：Catalyst solution is added dropwise into above-mentioned system, is stirred under inert atmosphere protection；Step
Four：The environment that reaction system is placed under certain reaction temperature, inert atmosphere protection is reacted, and the reaction time is 10-20h,
Obtain the segmented copolymer of PEG-PCL-dimethyl silicone polymer.
6. flexible display substrates as claimed in claim 5, it is characterised in that：The dimethyl silicone polymer, polyethylene glycol and
The mol ratio of the addition of polycaprolactone is 1:0.8-1.2:0.4-0.6, isocyanates coupling agent and dimethyl silicone polymer
Mol ratio be 1：1, the mol ratio of catalyst and polycaprolactone is 1：1.
7. flexible display substrates as claimed in claim 6, it is characterised in that：The isocyanates coupling agent is 1,6- pregnancy
Diisocyanate is supportted, the catalyst is dibutyl tin laurate, and the reaction temperature is 90 DEG C, and the inert atmosphere is nitrogen
Gas.
8. a kind of flexible display apparatus, it is characterised in that：Flexible display substrates including any one of claim 1-7 and it is placed in
Flexible display screen on the substrate.
9. flexible display apparatus as claimed in claim 8, it is characterised in that：The flexible display screen is OLED or QLED.
10. a kind of method for preparing the flexible display apparatus as described in claim any one of 8-9, comprises the following steps：
A thermal insulation layer is made on the flexible display substrates；
The flexible display screen is fixed on the flexible display substrates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491320.5A CN107204398A (en) | 2017-06-26 | 2017-06-26 | A kind of flexible display substrates and flexible display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710491320.5A CN107204398A (en) | 2017-06-26 | 2017-06-26 | A kind of flexible display substrates and flexible display apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN107204398A true CN107204398A (en) | 2017-09-26 |
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| CN201710491320.5A Withdrawn CN107204398A (en) | 2017-06-26 | 2017-06-26 | A kind of flexible display substrates and flexible display apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520917A (en) * | 2018-05-31 | 2018-09-11 | 京东方科技集团股份有限公司 | A kind of flexible display apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006068893A2 (en) * | 2004-12-22 | 2006-06-29 | Eastman Kodak Company | Flat stress free display element |
| CN103177656A (en) * | 2013-03-26 | 2013-06-26 | 哈尔滨工业大学 | Flexible back plate for flexible display |
| KR101394664B1 (en) * | 2012-12-17 | 2014-05-12 | 주식회사 나노솔루션 | Shape memory heating substrate |
-
2017
- 2017-06-26 CN CN201710491320.5A patent/CN107204398A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006068893A2 (en) * | 2004-12-22 | 2006-06-29 | Eastman Kodak Company | Flat stress free display element |
| KR101394664B1 (en) * | 2012-12-17 | 2014-05-12 | 주식회사 나노솔루션 | Shape memory heating substrate |
| CN103177656A (en) * | 2013-03-26 | 2013-06-26 | 哈尔滨工业大学 | Flexible back plate for flexible display |
Non-Patent Citations (1)
| Title |
|---|
| BENJAMIN QI YU CHAN, ET AL.: "Dual-responsive hybrid thermoplastic shape memory polyurethane", 《MATERIALS CHEMISTRY FRONTIERS》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520917A (en) * | 2018-05-31 | 2018-09-11 | 京东方科技集团股份有限公司 | A kind of flexible display apparatus |
| US11348486B2 (en) | 2018-05-31 | 2022-05-31 | Hefei Boe Optoelectronics Technology Co., Ltd. | Flexible display device |
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Application publication date: 20170926 |
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