CN106654055B - Flexible display and preparation method thereof - Google Patents
Flexible display and preparation method thereof Download PDFInfo
- Publication number
- CN106654055B CN106654055B CN201610824637.1A CN201610824637A CN106654055B CN 106654055 B CN106654055 B CN 106654055B CN 201610824637 A CN201610824637 A CN 201610824637A CN 106654055 B CN106654055 B CN 106654055B
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- transparent substrates
- flexible display
- adhesive layer
- curing agent
- production method
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Classifications
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- 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
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
-
- 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
- H10K71/851—Division of substrate
-
- 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
Abstract
The present invention relates to a kind of production methods of flexible display, include the following steps：In the uniformly coated with adhesive of transparent substrates, to form adhesive layer；Curing agent is coated on the adhesive layer, the adhesive layer of the contact curing agent is made to cure；In the uniformly coated polymer solution of the adhesive layer, to form flexible substrate；Barrier layer, tft array layer, oled layer and encapsulated layer are sequentially formed in the flexible substrate；Another side surface of transparent substrates is exposed, so that the flexible substrate is detached because the curing agent solidification fails with the transparent substrates.By the production method of above-mentioned flexible display, flexible substrate can be made to be easy to detach with above-mentioned transparent substrates, avoid in traditional processing technology, so that flexible substrate is generated a large amount of particle because of carbonization using laser, and then avoid the pollution to OLED display.
Description
Technical field
The present invention relates to flexible display apparatus fields, more particularly to a kind of flexible display and preparation method thereof.
Background technology
Flexible display is that the research hotspot of each colleges and universities of recent domestic and research structure and all big enterprises fall over each other cloth
The emphasis of office.Compared with regular display, flexible display has many advantages, such as：Light-weight, small, slimming, carrying side
Just；High-low temperature resistant, impact resistance, shock resistance are stronger, and adaptable working environment is wider；Rollable, shape is set with more art
The aesthetic feeling of meter；Using the coil type production technology of printing technology, cost is cheaper；It is low in energy consumption, it is more energy efficient；Organic material is more
It is environmentally protective.Flexible display is to use flexible substrate material as device bearing substrate, and require electrode layer, TFT matrixes, display
Device and encapsulated layer have certain bending radius that could realize flexibility.
Currently, the production technology of Flexible Displays product is broadly divided into two classes：The first kind is to use R2R (roll to roll)
Production technology, i.e., directly prepare display device on flexible substrates by way of printing, but due to by printing technology and
Show the limitation of ink material, the requirement of high-precision display is not achieved in the display device prepared, and yields is low, reliability
Difference；Second class is to use S2S (sheet to sheet) production technology, and the method removed afterwards is first attached in conjunction with flexible base board, first
Flexible base board is attached on hard carrier substrate and prepares display device, display device has been prepared and has removed hard substrate again later,
Flexible display device is taken out, this technique does not influence the making precision of display device, and making apparatus and technique and making tradition
TFT-LCD it is similar, it is not necessary to do too big adjustment, therefore in a short time closer to volume production application.
In conventionally employed S2S production technologies, after completion prepares display device, using under integrating laser carbonization flexible base board
Layer, makes flexible base board be detached with hard substrate, but in above-mentioned carbonisation, be easy to cause a large amount of particulate matter, these particles
Object can pollute display device, and display device needs are cleaned in subsequent handling, increase the complexity of manufacture craft
Degree.
Invention content
Based on this, it is necessary to for it is above-mentioned due to being carbonized to the lower layer of flexible base board using laser caused by particle
Pollution of the object to display device, and then the challenge of manufacture craft is increased, one kind is provided and does not generate particulate matter, and simplifies system
Make the flexible display and preparation method thereof of technique.
A kind of production method of flexible display, includes the following steps：
In the side of transparent substrates uniformly coated with adhesive, to form adhesive layer；
Curing agent is coated on the adhesive layer, the adhesive layer of the contact curing agent is made to cure；
In the uniformly coated polymer solution of the adhesive layer, to form flexible substrate；
Barrier layer, tft array layer, oled layer and encapsulated layer are sequentially formed in the flexible substrate；
Another side surface of transparent substrates is exposed, so that the flexible substrate fails and institute because of the curing agent solidification
State transparent substrates separation.
By the production method of above-mentioned flexible display, flexible substrate can be made to be easy to detach with above-mentioned transparent substrates, avoided
In traditional processing technology, flexible substrate is set to generate a large amount of particle because of carbonization using laser, and then avoid to OLED display
Pollution.
In one of the embodiments, in the uniformly coated with adhesive in transparent substrates, to form bonding
It is further comprising the steps of before the step of layer：
Surface to transparent substrates for coated with adhesive is surface-treated so that the surface of transparent substrates is in hydrophobic
Property.
The surface to transparent substrates for coated with adhesive is surface-treated in one of the embodiments, is made
The surface for obtaining transparent substrates includes in hydrophobic step：
Hydrophober is coated on the surface of the transparent substrates.
The hydrophober is dimethicone in one of the embodiments,.
The binder includes polyurethane in one of the embodiments,.
The curing agent includes polymethyl methacrylate in one of the embodiments,.
It is described in one of the embodiments, that another side surface of transparent substrates is exposed, so that the flexible substrate
In the step of being detached with the transparent substrates because of curing agent solidification failure, including：
Transparent substrates are exposed using ultraviolet light.
The transparent substrates are glass substrate in one of the embodiments,.
Curing agent is coated on the adhesive layer in one of the embodiments, makes the described viscous of the contact curing agent
In the step of tying layer solidification, the curing agent is coated in the surrounding close to the adhesive layer marginal position, and the adhesive layer is consolidated
Change width is 80-120um.
A kind of flexible display is made by the production method of above-described flexible display.
Above-mentioned flexible display can be such that flexible substrate is easy and above-mentioned light transmission by the production method of above-mentioned flexible display
Substrate detaches, and avoids in traditional processing technology, so that flexible substrate is generated a large amount of particle because of carbonization using laser, and then avoid
Pollution to flexible display improves the yield of flexible display.
Description of the drawings
Fig. 1 is the flow chart of the method for fabricating flexible display of a preferred embodiment of the invention；
Fig. 2 is to form barrier layer in transparent substrates in the method for fabricating flexible display of a preferred embodiment of the invention
And schematic cross-sectional view when encapsulated layer.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the Listed Items of pass.
A kind of flexible display 100 of a preferred embodiment of the invention, the flexible display 100 is by following production method systems
It forms, which includes the following steps：
S11：Surface to transparent substrates for coated with adhesive is surface-treated so that the surface of transparent substrates is in thin
It is aqueous.
In this step, by being surface-treated on transparent substrates 110 so that the surface of transparent substrates 110 is in thin
It is aqueous.And then follow-up adhesive layer 120 is facilitated to be removed from transparent substrates 110.In more detail, on the surface of above-mentioned transparent substrates
Hydrophober is coated, in this way, the surface of the transparent substrates of coating hydrophober is just in hydrophobicity, such as above-mentioned hydrophober can be diformazan
Base silicone oil reaches the goal of the invention of the present invention but as long as the table surface of its transparent substrates 110 can be made to be in hydrophobic hydrophober
, the present invention herein and is not construed as limiting.
S12：In the side of transparent substrates uniformly coated with adhesive, to form adhesive layer.
As shown in Fig. 2, the surface coating in the transparent substrates 110 of one layer of hydrophober of above-mentioned coating is evenly coated with binder
120, which includes polyurethane, is mainly used for subsequent flexible substrate 140 being bonded in above-mentioned transparent substrates 110
Surface.Usually, above-mentioned binder 120 is coated in the surfaces of transparent substrates 110 and connects ectocentral position, and not exclusively covers
The surface for covering entire transparent substrates 110, in order to which subsequent cure agent coats.
S13：Curing agent is coated on the adhesive layer, the adhesive layer of the contact curing agent is made to cure.
In this step, curing agent 130 (such as crosslinking agent) is coated on above-mentioned binder 120, it will in present embodiment
Above-mentioned curing agent 130 is coated in the surrounding close to 120 marginal position of above-mentioned binder, which includes polymethyl
Sour methyl esters is mainly used for contacting with above-mentioned binder 120, in detail, binder 120 be formed by it is outermost one circle with
Curing agent 130 can cure within a short period of time after contacting, wherein the solidification width of the adhesive layer is 80-120um, in binder
In between 120 this section not being fully cured, polymer thin film of the subsequent coated on the surface of adhesive layer can consolidating with binder 120
Change, flexible substrate 140 is made to be bonded in the surface of above-mentioned transparent substrates 110.
Certainly, also can above-mentioned curing agent 130 be coated in the whole surface of above-mentioned binder 120, as long as this can be reached
The goal of the invention of invention, this is not limited by the present invention.
S14：In the uniformly coated polymer solution of the adhesive layer, to form flexible substrate.
Before above-mentioned binder 120 is not fully cured, the upper surface of adhesive layer is formed by above-mentioned binder 120
It is evenly coated with polymer solution, such as PI solution, then can be sent in high temperature oven, is carried out at high-temperature heating
Reason, makes polymer solution be cured and forms flexible substrate 140, i.e. flexible substrate, and the coating method of polymer solution can be with
It is the methods of spin-coating method (Spin), knife coating (slit) or ink jet printing (inkjet printing), and it is molten to control polymer
The characterisitic parameters such as thickness, uniformity and the surface roughness of liquid coating.
S15：Barrier layer 150, tft array layer 160, oled layer 170 and encapsulated layer are sequentially formed in the flexible substrate
180。
Since the water oxygen transmitance of flexible substrate 140 is high, stability and service life to OLED device have seriously
It influences, so in this step, needing to form barrier layer 150 in flexible substrate 140, to prevent water oxygen from penetrating, device is protected
Shield, as the preferred embodiment of the present invention, the barrier layer 150 is the alternating structure that organic material/inorganic material is formed, or
The alternating structure that person's inorganic material/inorganic material is formed.Preferably, the organic material/inorganic material alternating structure is
parylene/SiNx/parylene/SiNx；Further, the inorganic material/inorganic material alternating structure is SiNxSiO2/
SiNx.Then the tft array 160 for driving flexible display device, such as Oxide-TFT are made on barrier layer 150, according to
The difference of TFT technological temperatures needs the flexible substrate material for selecting heat resistance different.Then each layer organic material and electricity is deposited
Pole material makes OLED display device 170, forms AMOLED layers by tft array layer 160 and oled layer 170, finally makes encapsulation
Layer 180, plays the influence for protecting flexible display from steam, oxygen, dust and stress.
S16：Another side surface of transparent substrates is exposed, so that the flexible substrate fails because of the curing agent solidification
It is detached with the transparent substrates.
After the completion of above-mentioned element manufacturing, the back side of transparent substrates 110 can be exposed, usually, the transparent substrates
110 be glass substrate, such as is exposed to the back side of transparent substrates 110 using ultraviolet light, and light enters transparent substrates 110
The back side since transparent substrates 110 can be such that light enters in it, and then exposes to and is cured positioned at the positive of transparent substrates 110
The cured adhesive layer of agent, at this moment, due to being irradiated by light, curing agent 130 fails, and then causes the adhesive layer being cured saturating with this
Flexible display can be cut and be removed along cutting line easily by photopolymer substrate 110 and flexible substrate separation, such staff
Get off, wherein adhesive layer is located adjacent to not being cured for the middle position of transparent substrates 110, and the surface of transparent substrates 110
With certain hydrophobicity, transparent substrates 110 and the cementability of the intermediate region of adhesive linkage are poor, so make binder 120 with
Flexible substrate is detached from transparent substrates together, in this way when in subsequent flow chart as also needed to position OLED display device
When, which may be repeated use.
By the production method of above-mentioned flexible display, flexible substrate can be made to be easy to detach with above-mentioned transparent substrates, simplified
Production technology, and avoid in traditional processing technology, so that flexible substrate is generated a large amount of particle because of carbonization using laser, in turn
The pollution to OLED display is avoided, the yield of flexible display is improved.
Another preferred embodiment of the present invention discloses a kind of flexible display, and the flexible display is by the above embodiment
In the production method of flexible display be made.
Above-mentioned flexible display can be such that flexible substrate is easy and above-mentioned light transmission by the production method of above-mentioned flexible display
Substrate detaches, and avoids in traditional processing technology, so that flexible substrate is generated a large amount of particle because of carbonization using laser, and then keep away
Exempt from the pollution to flexible display, improves the yield of flexible display.
Each technical characteristic of embodiment described above can be combined arbitrarily, to keep description succinct, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, it is all considered to be the range of this specification record.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (9)
1. a kind of production method of flexible display, which is characterized in that include the following steps：
In the side of transparent substrates uniformly coated with adhesive, to form adhesive layer；
Curing agent is coated on the adhesive layer, the adhesive layer of the contact curing agent is made to cure；
In the uniformly coated polymer solution of the adhesive layer, to form flexible substrate；
Barrier layer, tft array layer, oled layer and encapsulated layer are sequentially formed in the flexible substrate；
Another side surface of transparent substrates is exposed so that the flexible substrate because the curing agent solidification failure with it is described
Photopolymer substrate detaches；
It is described solid in the step of coating curing agent on the adhesive layer, the adhesive layer of the contact curing agent is made to cure
Agent is coated in the surrounding close to the adhesive layer marginal position, and the solidification width of the adhesive layer is 80-120um.
2. the production method of flexible display according to claim 1, which is characterized in that described on the surface of transparent substrates
Be evenly coated with binder, the step of to form adhesive layer before it is further comprising the steps of：
Surface to transparent substrates for coated with adhesive is surface-treated so that the surface of transparent substrates is in hydrophobicity.
3. the production method of flexible display according to claim 2, which is characterized in that described to be used to apply to transparent substrates
The surface for covering binder is surface-treated so that the surface of transparent substrates includes in hydrophobic step：
Hydrophober is coated on the surface of the transparent substrates.
4. the production method of flexible display according to claim 3, which is characterized in that the hydrophober is dimethyl-silicon
Oil.
5. the production method of flexible display according to claim 1, which is characterized in that the binder includes polyurethane.
6. the production method of flexible display according to claim 1, which is characterized in that the curing agent includes poly- methyl-prop
E pioic acid methyl ester.
7. the production method of flexible display according to claim 1, which is characterized in that described to the transparent substrates other side
Surface is exposed so that the flexible substrate because the curing agent solidification failure detached with the transparent substrates the step of in,
Including：
Transparent substrates are exposed using ultraviolet light.
8. the production method of flexible display according to claim 1, which is characterized in that the transparent substrates are glass base
Plate.
9. a kind of flexible display, which is characterized in that made by the production method of the flexible display of any one of claim 1-8
It forms.
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| CN201610824637.1A CN106654055B (en) | 2016-09-14 | 2016-09-14 | Flexible display and preparation method thereof |
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| CN201610824637.1A CN106654055B (en) | 2016-09-14 | 2016-09-14 | Flexible display and preparation method thereof |
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| CN108807486B (en) * | 2018-06-26 | 2020-10-02 | 武汉华星光电半导体显示技术有限公司 | Preparation method of display panel and display device |
| CN109475041B (en) * | 2018-10-31 | 2020-05-08 | 上海奕瑞光电子科技股份有限公司 | Binding method of flexible substrate display panel |
| CN109904106B (en) * | 2019-02-28 | 2021-12-14 | 云谷（固安）科技有限公司 | Flexible display panel and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325731A (en) * | 2013-05-20 | 2013-09-25 | Tcl集团股份有限公司 | Manufacturing method of flexible display device |
| CN103540269A (en) * | 2013-08-27 | 2014-01-29 | Tcl集团股份有限公司 | Preparation method of ultraviolet light reversible glue and flexible display device |
| CN105024018A (en) * | 2014-04-29 | 2015-11-04 | Tcl集团股份有限公司 | Flexible display and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI492373B (en) * | 2012-08-09 | 2015-07-11 | Au Optronics Corp | Method for fabricating flexible display module |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325731A (en) * | 2013-05-20 | 2013-09-25 | Tcl集团股份有限公司 | Manufacturing method of flexible display device |
| CN103540269A (en) * | 2013-08-27 | 2014-01-29 | Tcl集团股份有限公司 | Preparation method of ultraviolet light reversible glue and flexible display device |
| CN105024018A (en) * | 2014-04-29 | 2015-11-04 | Tcl集团股份有限公司 | Flexible display and manufacturing method thereof |
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Effective date of registration: 20201207 Address after: No.146 Tianying Road, high tech Zone, Chengdu, Sichuan Province Patentee after: Chengdu CHENXIAN photoelectric Co.,Ltd. Address before: 215300, No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou, 4 Patentee before: KunShan Go-Visionox Opto-Electronics Co.,Ltd. |
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