CN108231843A - A kind of flexible OLED display and preparation method thereof - Google Patents
A kind of flexible OLED display and preparation method thereof Download PDFInfo
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- CN108231843A CN108231843A CN201711489195.0A CN201711489195A CN108231843A CN 108231843 A CN108231843 A CN 108231843A CN 201711489195 A CN201711489195 A CN 201711489195A CN 108231843 A CN108231843 A CN 108231843A
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- Prior art keywords
- anode
- flexible
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- oled display
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- 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
Abstract
The present invention relates to display areas, disclose a kind of flexible OLED display and preparation method thereof, including：Flexible base board, anode, cathode and organic luminous layer, the organic luminous layer is between the anode and the cathode, the anode is covered in the flexible base board upper end, the electrode of the anode and the electrode of cathode are made of liquid metal, the flexible base board is fabricated from a flexible material, a kind of flexible OLED display provided by the invention and preparation method thereof, utilize liquid metal electronic circuit printing technique, cathode electrode and anode electrode are directly printed on flexible substrates, it makes simple, it is easy to be molded, technical difficulty is low, large-scale mass production can be achieved, reduce cost, simultaneously, independent design and rational collocation, original equipment is run without influence, and suitable for almost all operating mode.
Description
Technical field
The present invention relates to display area, more particularly to a kind of flexible OLED display.
Background technology
As display technology develops very fast, requirement of the consumer to display performance is continuously improved, and traditional LCD shows skill
Art can not be fully met.In the case where the new market demand pushes, OLED display technologies are as a kind of novel display technology
It comes into being.OLED display screen is to utilize display screen made of organic electroluminescent LED.OLED has than LCD more preferably
Performance and wider array of application range, " third generation display technology " being referred to as after LCD.OLED display technologies are than LCD more
It is frivolous, brightness is high, low in energy consumption, response is fast, clarity is high, flexible, luminous efficiency is high, consumer can be met to display technology
New demand.At present, global panel vendor all tries to be the first increases Innovation Input in OLED, accelerates layout, the technology is more and more
Applied in the intelligent terminals such as tablet, smart mobile phone, computer, TV wearable device.Just as current year LCD replaces CRT monitor
Equally, OLED replaces the inexorable trend that LCD is future development.
Due to OLED and difference of the TFT-LCD devices on structure, material properties and principle of luminosity, OLED luminescent devices
It is more suitable for manufacturing flexible screen.Current flexible screen is also widely referred to as Curved screen, because it only shows a fixed song
Face, it appears that " flexibility " is not included also, this is because safeguarded since screen also needs to glass, and glass material has it that can not exceed
Bending obstacle more.The most commonly used is glass or the metal cover board envelopes using glass as substrate at present for the encapsulation that OLED shields firmly at present
Dress, and flexible device is then encapsulated with individual layer and plural layers.Therefore, current flexible OLED display makes difficult, and technology is difficult
Degree is high, is not easy to large-scale mass production.
Invention content
(1) technical problems to be solved
The object of the present invention is to provide a kind of flexible OLED displays and preparation method thereof, solve flexible in the prior art
OLED display screen makes difficult, and technical difficulty is high, the problem of being not easy to large-scale mass production.
(2) technical solution
In order to solve the above technical problem, the present invention provides a kind of flexible OLED displays, which is characterized in that including：It is soft
Property substrate, anode, cathode and organic luminous layer, the organic luminous layer is between the anode and the cathode, the sun
Pole is covered in the flexible base board upper end, and the electrode of the anode and the electrode of cathode are made of liquid metal, the flexibility
Substrate is fabricated from a flexible material.
Wherein, the flexible base board is made of polyimide plastic, polyether-ether-ketone or electrically conducting transparent terylene.
Wherein, the anode includes the first driving circuit, the second driving circuit, anode electrode, TFT matrixes, and is liquid
State metal electron circuit printing technique prints.
Wherein, the organic luminous layer includes electron transfer layer, hole transmission layer and luminescent layer, the electron transfer layer
Including electronic barrier layer, electron injecting layer and electron transfer layer, the hole transmission layer includes hole injection layer, hole transport
Layer and hole blocking layer.
Invention additionally discloses a kind of production methods of flexible OLED display, which is characterized in that including：
Flexible base board is selected as base material；
Anode electrode is printed on flexible substrates using liquid metal electronic circuit printing technique；
Cathode electrode is printed upon on anode using liquid metal electronic circuit printing technique.
Wherein, the first driving circuit of OLED matrix circuits, second are driven using liquid metal electronic circuit printing technique
Dynamic circuit, anode electrode, the printing of TFT matrixes are on flexible substrates.
(3) advantageous effect
A kind of flexible OLED display provided by the invention and preparation method thereof is printed using liquid metal electronic circuit
Cathode electrode and anode electrode are directly printed on flexible substrates, make simply, be easy to be molded by technology, and technical difficulty is low,
Large-scale mass production can be achieved, reduce cost, meanwhile, independent design and rational collocation run without shadow original equipment
It rings, and suitable for almost all operating mode.
Description of the drawings
Fig. 1 is a kind of structure diagram of flexible OLED display of the present invention；
Fig. 2 is the structure diagram of OLED matrix circuits of the present invention.
In figure, 1, cathode；2nd, electron injecting layer；3rd, electron transfer layer；4th, hole blocking layer；5th, luminescent layer；6th, flexible base
Plate；7th, anode；8th, hole injection layer；9th, power supply；10th, hole transmission layer；11st, electronic barrier layer；12nd, conducting wire；13；Organic hair
Photosphere；14th, the first driving circuit；15th, the second driving circuit；16th, anode electrode；17th, TFT matrixes；18th, cathode electrode.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Following instance
For illustrating the present invention, but it is not limited to the scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally connect
It connects；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
As depicted in figs. 1 and 2, the present invention discloses a kind of flexible OLED display, which is characterized in that including：Flexible base board
6th, anode 7, cathode 1 and organic luminous layer 13, the organic luminous layer 13 is between the anode 7 and the cathode 1, institute
It states anode 7 and is covered in 6 upper end of flexible base board, the electrode of the anode 7 and the electrode of the cathode 1 are liquid metal
It is made, the flexible base board 6 is fabricated from a flexible material.
Specifically, because of the high conductivity of liquid metal, it can be as the anode electrode of OLED display screen and cathode electrode material
Material；Again because liquid metal has liquid flowable, bending will not be easily snapped off as traditional electrode material, be flexible OLED
The only selection of display screen.Because organic luminous layer can realize flexibility, therefore the present invention uses flexible base board in the prior art
6, and anode 7, cathode 1 and organic luminous layer 13 are respectively provided with flexibility, form the flexible OLED display of complete set.Anode
7 include anode electrode 16 and OLED matrix circuits, and cathode includes cathode electrode 18.In the prior art, mushroom configuration is generally used
Method, the present invention is using liquid metal electronic circuit printing technique, by cathode electrode 18, anode electrode 16 and OLED matrixes electricity
Road is directly printed upon on flexible base board 6, it can be achieved that produce in batches, utilizes the flowable of liquid metal and the spy of high conductivity
Point so that OLED display screen has good flexibility, and power supply 9 is connected to anode and cathode by conducting wire 12.
A kind of flexible OLED display provided by the invention and preparation method thereof is printed using liquid metal electronic circuit
Cathode electrode and anode electrode are directly printed on flexible substrates, make simply, be easy to be molded by technology, and technical difficulty is low,
Large-scale mass production can be achieved.
Wherein, the flexible base board 6 is made or of polyimide plastic, polyether-ether-ketone or electrically conducting transparent terylene by other
Wait high molecular materials be made, feature include it is light-weight, thickness is thin, soft flexible.
As shown in Fig. 2, the anode includes the first driving circuit 14, the second driving circuit 15, anode electrode 16, TFT squares
Battle array 17, and is that liquid metal electronic circuit printing technique prints, i.e. OLED matrix circuits.This matrix circuit is formed
The pixel circuit of OLED, realizes screen flexibility using liquid metal electronic circuit printing technique, is easy to be molded, be easy to
Large-scale production, moreover it is possible to reduce cost, reduce thickness.
Wherein, the organic luminous layer 13 includes electron transfer layer 3, hole transmission layer 10 and luminescent layer 5, the electronics
Transmitting layer 3 includes electronic barrier layer 11, electron injecting layer 2 and electron transfer layer 3, and the hole transmission layer 10 is noted including hole
Enter layer 8, hole transmission layer 10 and hole blocking layer 4.Its principle of luminosity：When element is by forward bias voltage drop, applied voltage will
Drive electron injecting layer 2 and hole transmission layer 10 respectively by cathode 1 and 7 injection element of anode, when the two meets in conduction,
With reference to it is compound to form so-called electron-hole.And after chemical molecular is excited by extraneous energy, if electron spin and base
State electronics is pairs of, then is singlet state, and the light discharged is so-called fluorescence；Conversely, if excitation state electronics and ground state electron are certainly
Rotation is not pairs of and parallel, then referred to as triplet, the light discharged are so-called phosphorescence.
Invention additionally discloses a kind of production methods of flexible OLED display, which is characterized in that including：
Flexible base board is selected as base material；
Anode electrode is printed on flexible substrates using liquid metal electronic circuit printing technique；
Cathode electrode is printed upon on anode using liquid metal electronic circuit printing technique.
Liquid metal electronic circuit printing technique be it is a kind of by low-melting-point metal or its alloy by special facture, formed
It is a kind of to write printable liquid metal ink, in the printer using speciality, required electronic circuit is printed to specified
Technology in substrate.Anode and cathode are printed upon flexible base by the present invention using this liquid metal electronic circuit printing technique
On plate, realize that OLED display screen has flexibility, and is easy to large-scale mass production.
Wherein, the first driving circuit of OLED matrix circuits, second are driven using liquid metal electronic circuit printing technique
Dynamic circuit, anode electrode, the printing of TFT matrixes are on flexible substrates.
A kind of flexible OLED display disclosed by the invention and preparation method thereof is printed using liquid metal electronic circuit
Cathode and anode are directly printed on flexible substrates, make simply, be easy to be molded by technology, and technical difficulty is low, it can be achieved that big
Scale is produced in batches, reduces cost, meanwhile, independent design and rational collocation are run without influence original equipment, and be applicable in
In almost all operating mode.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of flexible OLED display, which is characterized in that including：Flexible base board (6), anode (7), cathode (1) and organic hair
Photosphere (13), between the anode (7) and the cathode (1), the anode (7) is covered in the organic luminous layer (13)
Flexible base board (6) upper end, the electrode of the anode (7) and the electrode of the cathode (1) are that liquid metal is made, described
Flexible base board (6) is fabricated from a flexible material.
2. flexible OLED display as described in claim 1, which is characterized in that the flexible base board (6) is moulded for polyimides
Material, polyether-ether-ketone or electrically conducting transparent terylene are made.
3. flexible OLED display as described in claim 1, which is characterized in that the anode includes the first driving circuit
(14), the second driving circuit (15), anode electrode (16), TFT matrixes (17), and be liquid metal electronic circuit printing technique
It prints.
4. flexible OLED display as described in claim 1, which is characterized in that the organic luminous layer (13) passes including electronics
Defeated layer (3), hole transmission layer (10) and luminescent layer (5), the electron transfer layer (3) are noted including electronic barrier layer (11), electronics
Enter layer (2) and electron transfer layer (3), the hole transmission layer (10) includes hole injection layer (8), hole transmission layer (10) and sky
Cave barrier layer (4).
5. a kind of production method of flexible OLED display, which is characterized in that including：
Flexible base board is selected as base material；
Anode electrode is printed on flexible substrates using liquid metal electronic circuit printing technique；
Cathode electrode is printed upon on anode using liquid metal electronic circuit printing technique.
6. the production method of flexible OLED display as claimed in claim 5, which is characterized in that utilize liquid metal electronics electricity
First driving circuit of OLED matrix circuits, the second driving circuit, anode electrode, TFT matrixes are printed upon soft by road printing technique
On property substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489195.0A CN108231843A (en) | 2017-12-30 | 2017-12-30 | A kind of flexible OLED display and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489195.0A CN108231843A (en) | 2017-12-30 | 2017-12-30 | A kind of flexible OLED display and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108231843A true CN108231843A (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711489195.0A Pending CN108231843A (en) | 2017-12-30 | 2017-12-30 | A kind of flexible OLED display and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407555A (en) * | 2022-08-17 | 2022-11-29 | 合肥合纵光电科技有限公司 | Flexible quantum dot direct display device |
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| US20060066224A1 (en) * | 2004-07-30 | 2006-03-30 | Dai Nippon Printing Co., Ltd. | Organic functional element, organic EL element, organic semiconductor element, organic TFT element and method for producing the same |
| CN104576692A (en) * | 2014-11-24 | 2015-04-29 | 深圳市华星光电技术有限公司 | Conductive flexible substrate, manufacturing method of conductive flexible substrate, OLED display device and manufacturing method of OLED (organic light emitting diode) display device |
| CN105741696A (en) * | 2016-02-18 | 2016-07-06 | 云南科威液态金属谷研发有限公司 | Flexible display control device and preparation method |
| CN106374046A (en) * | 2016-09-12 | 2017-02-01 | Tcl集团股份有限公司 | Positively-arranged structure quantum dot light-emitting diode and fabrication method thereof |
| CN107323089A (en) * | 2017-08-10 | 2017-11-07 | 上海幂方电子科技有限公司 | Three-dimensional printer |
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2017
- 2017-12-30 CN CN201711489195.0A patent/CN108231843A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060066224A1 (en) * | 2004-07-30 | 2006-03-30 | Dai Nippon Printing Co., Ltd. | Organic functional element, organic EL element, organic semiconductor element, organic TFT element and method for producing the same |
| CN104576692A (en) * | 2014-11-24 | 2015-04-29 | 深圳市华星光电技术有限公司 | Conductive flexible substrate, manufacturing method of conductive flexible substrate, OLED display device and manufacturing method of OLED (organic light emitting diode) display device |
| CN105741696A (en) * | 2016-02-18 | 2016-07-06 | 云南科威液态金属谷研发有限公司 | Flexible display control device and preparation method |
| CN106374046A (en) * | 2016-09-12 | 2017-02-01 | Tcl集团股份有限公司 | Positively-arranged structure quantum dot light-emitting diode and fabrication method thereof |
| CN107323089A (en) * | 2017-08-10 | 2017-11-07 | 上海幂方电子科技有限公司 | Three-dimensional printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115407555A (en) * | 2022-08-17 | 2022-11-29 | 合肥合纵光电科技有限公司 | Flexible quantum dot direct display device |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |
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| RJ01 | Rejection of invention patent application after publication |