CN109004094A - A kind of flexible white light device - Google Patents
A kind of flexible white light device Download PDFInfo
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- CN109004094A CN109004094A CN201810801695.1A CN201810801695A CN109004094A CN 109004094 A CN109004094 A CN 109004094A CN 201810801695 A CN201810801695 A CN 201810801695A CN 109004094 A CN109004094 A CN 109004094A
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/115—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising active inorganic nanostructures, e.g. luminescent quantum dots
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
Abstract
The present invention provides a kind of flexible white light devices, including substrate, anode layer, hole injection layer, hole transmission layer, organic luminous layer, electron transfer layer, cathode layer and encapsulated layer, it is characterized in that, doped with quantum dot or fluorescent powder in the substrate, the organic luminous layer is blue light or ultraviolet light organic luminous layer, excites quantum dot, light-emitting phosphor to realize white light by blue light or ultraviolet Organic Light Emitting Diode.The device reduces the difficulty using Organic Light Emitting Diode production white light, and can guarantee the colour rendering index for stabilizing and increasing spectrum of spectrum, and substrate thickness, which controllably can effectively weaken microcavity effect, enhances light out, and can realize the high stability in flexible device service life.
Description
Technical field
The invention belongs to illuminating device fields, and in particular to a kind of flexible white light device.
Background technique
The device that fluorescent powder issues white light through Blue-LED lamp has closely occupied sizable part of white-light illuminating in the market
Volume.So-called quantum dot TV is that quantum dot is irradiated by blue led as backlight in the market.These common white light parts
Want to be made into ultrathin flexible device to be extremely difficult.And now either illumination or can threading equipment all pursue it is soft,
It is personalized.It has to look for new mode in order to meet the needs of new and prepares white light parts.
The advantages that Organic Light Emitting Diode (OLED) has operating voltage low, and calorific value is low, and panel is thin, can do flexibility,
But also have disadvantage: white light OLED device with the working time extension, due to spontaneous RGB luminescent material have different works
Make the service life, it is photochromic uneven that this will lead to entire light-emitting surface after a certain period of time.The advantage for how making good use of a variety of materials becomes system
The key of standby flexible white light device.
Summary of the invention
For the above problem of the existing technology, the main purpose of the present invention is to provide a kind of flexible white light device,
It combines Organic Light Emitting Diode with quantum dot, fluorescent powder, excites quantum by blue light or ultraviolet Organic Light Emitting Diode
Point, light-emitting phosphor realize white light, to reduce the difficulty of Organic Light Emitting Diode production white light, and can guarantee the steady of spectrum
Colour rendering index that is fixed and improving spectrum, and can realize the high stability in flexible device service life, save cost.
To achieve the above object, the present invention the following technical schemes are provided:
A kind of flexible white light device, including substrate, anode layer, hole injection layer, hole transmission layer, organic luminous layer, electronics pass
Defeated layer, cathode layer and encapsulated layer, which is characterized in that doped with quantum dot or fluorescent powder, organic hair in the substrate
Photosphere is blue light or ultraviolet light organic luminous layer.
Further, the quantum dot is gold-tinted quantum dot, the one or more of green light quantum point, red light quantum point mix
It closes；Fluorescent powder is one or more mixing of yellow fluorescent powder, green light fluorescent powder, red light fluorescent powder.
Further, the material of the substrate be polyethylene, polypropylene, polyvinyl chloride, styrene-acrylonitrile copolymer,
Acrylonitrile-butadiene-styrene (ABS) co-polymer, ethylene-acetic ethylene ester copolymer, gathers to benzene two polymethacrylates
In formic acid glycol ester, PA polybutyleneterephthalate, polyamide, polyphenylene sulfide, polyurethane or polystyrene
A kind of or one of derivative.
Further, the material of the anode layer is inorganic material or organic conductive polymer material；The inorganic material
Material is one of tin indium oxide, zinc-tin oxide, silver, copper or aluminium or several mixtures；Organic conductive polymer is poly- thiophene
One of pheno, polyvinylbenzenesulfonic acid sodium, poly- 3,4- ethene dioxythiophene, poly styrene sulfonate, polyaniline are several
Mixture.
Further, the material for constituting the hole injection layer is metal oxide or organic material, thickness 1-30 nm；
The material of hole transmission layer is the mixture of organic material or metal oxide and organic material, thickness 10-200 nm；Organic hair
The material of photosphere is a kind of organic material or a variety of organic mixed materials, thickness 5-100 nm；Constitute the electron transfer layer
Material is organic material, thickness 10-300 nm；The material for constituting the cathode layer is gold, silver, copper, aluminium, magnesium or two kinds any
Mixture, thickness 20-2000 nm；The material for constituting the encapsulated layer is plastics or metal oxide, thickness 100nm-1cm.
White light parts of the present invention the preparation method comprises the following steps: first making substrate: by dissolving plastic in a solvent or heating
Plastics are dissolved, quantum dot, fluorescent powder are added in plastic liquid according to a certain percentage, stirred evenly, fluid is poured into mold
In, make plastic shape-forming by way of heating or solvent flashing or cooling or ultra-violet curing.Then, successively production is positive
Pole layer, hole injection layer, hole transmission layer, blue light or ultraviolet organic luminous layer, electron transfer layer, cathode layer, encapsulated layer.Its
In, the thickness of substrate can control 0.1 μm of -1cm as needed.
The utility model has the advantages that the device, which reduces, utilizes Organic Light Emitting Diode the present invention provides a kind of flexible white light device
The difficulty of white light is made, and can guarantee the colour rendering index for stabilizing and increasing spectrum of spectrum, substrate thickness controllably can be effective
Weakening microcavity effect enhances light out, and can realize the high stability in flexible device service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of flexible white light device of the present invention.
Fig. 2 is the chemical structure schematic diagram of each raw material described in the embodiment of the present invention 1.
Fig. 3 is the luminescent spectrum figure of flexible white light device described in the embodiment of the present invention 1.
Fig. 4 is the luminescent spectrum figure of flexible white light device described in the embodiment of the present invention 2.
Specific embodiment
The invention will now be further described with reference to specific embodiments, but examples are merely exemplary, not to this hair
Bright range constitutes any restrictions.The method is conventional method unless otherwise instructed.The raw material are unless otherwise instructed
It can be obtained from public commercial source.
Embodiment 1
A kind of flexible white light device, structure is as shown in Figure 1, preparation method is as follows:
Step 1: by dimethyl silicone polymer 10g(fluid), green light (glow peak 540nm) quantum dot 3mg, feux rouges (glow peak
630nm) quantum dot 2mg is uniformly mixed, and is poured into mold, is controlled thickness in 0.5mm, is heating and curing, obtains substrate；
Step 2: then substrate surface does hydrophily processing, and by highly conductive polymer, poly- 3,4-rthylene dioxythiophene and polyphenyl second
The mixture of alkene sulfonate (PEDOT:PSS) is sprayed on substrate surface, drying, thickness 50nm or so；
Step 3: successively six cyano -1,4,5,8,9,12- of vacuum evaporation hole injection layer material 2,3,6,7,10,11-, six azepine
Benzophenanthrene (HATCN), with a thickness of 10 nm；Hole transport layer material 4,4'- cyclohexyl two [N, N- bis- (4- aminomethyl phenyl) aniline]
(TAPC), with a thickness of 50 nm；Light emitting layer material is the two -9H- carbazole of 9,9'- (1,3- phenyl) that mass ratio is 100:12
(mCP) and bis- (4,6- difluorophenyl pyridinato-N, C2) pyridinecarboxylics close iridium (Firpic) mixture, with a thickness of 20nm；Electronics
Transmit layer material 3,3'- [5'- [3- (3- pyridyl group) phenyl] [1,1':3', 1''- terphenyl] -3,3''- diyl] two pyridines
(TmPyPb) thickness 45nm, the thickness 2nm of 8-hydroxyquinoline-lithium (Liq) material；Cathode layer materials aluminium, thickness 150nm；
Step 4: covering encapsulated layer, encapsulated layer is plastic film, passes through ultra-violet curing glue connecting substrate and encapsulated layer.
The chemical structure of each material as described in the examples is as shown in Figure 2.Flexible white light device made from the embodiment
Luminescent spectrum it is as shown in Figure 3.Horizontal axis is wavelength, and the longitudinal axis is luminous intensity, and blue light inspires green light and feux rouges, is formed compound
Spectrum-white light, the spectrum colour rendering index (CRI) reach 90%.
Embodiment 2
The present embodiment the difference from embodiment 1 is that, the first step of the preparation method are as follows: by dimethyl silicone polymer 10g
(fluid), green light (glow peak 540nm) quantum dot 3mg, yellow light (glow peak 586nm) quantum dot 2mg, feux rouges (glow peak
630nm) quantum dot 1.5mg is uniformly mixed, and is poured into mold, is controlled thickness in 0.5mm, is heating and curing, obtains substrate.The reality
The luminescent spectrum for applying flexible white light device made from example is as shown in Figure 4.Horizontal axis is wavelength, and the longitudinal axis is luminous intensity, blue light excitation
Green light, yellow light and feux rouges out form compound spectrum-white light, and the spectrum colour rendering index (CRI) is more than 100%.
Claims (6)
1. a kind of flexible white light device, including substrate, anode layer, hole injection layer, hole transmission layer, organic luminous layer, electronics
Transport layer, cathode layer and encapsulated layer, which is characterized in that doped with quantum dot or fluorescent powder in the substrate, described is organic
Luminescent layer is blue light or ultraviolet light organic luminous layer.
2. a kind of flexible white light device according to claim 1, which is characterized in that the substrate the preparation method comprises the following steps:
Dissolving plastic in a solvent or is dissolved by heating into plastics, quantum dot and fluorescent powder are added in plastic liquid, stirred evenly, it will
Fluid pours into mold, and plastic shape-forming is made to become substrate by way of heating, solvent flashing, cooling or ultra-violet curing；
The substrate with a thickness of 0.1 μm of -1cm.
3. a kind of flexible white light device according to claim 1, which is characterized in that the quantum dot is yellow light quantum
One or more mixing of point, green light quantum point, red light quantum point；Fluorescent powder is that yellow fluorescent powder, green light fluorescent powder, feux rouges are glimmering
One or more mixing of light powder.
4. a kind of flexible white light device according to claim 1, which is characterized in that the material of the substrate be polyethylene,
Polypropylene, polyvinyl chloride, styrene-acrylonitrile copolymer, acrylonitrile-butadiene-styrene (ABS) co-polymer, polymethylacrylic acid
Ester, ethylene-acetic ethylene ester copolymer, polyethylene terephthalate, PA polybutyleneterephthalate, polyamide, poly- Asia
The derivative of one of aralkyl sulfid, polyurethane or polystyrene or one of which.
5. a kind of flexible white light device according to claim 1, which is characterized in that the material of the anode layer is inorganic material
Material or organic conductive polymer material；The inorganic material be one of tin indium oxide, zinc-tin oxide, silver, copper or aluminium or
Several mixture of person；Organic conductive polymer is polythiophene, polyvinylbenzenesulfonic acid sodium, poly- 3,4- ethene dioxythiophene, gathers
One of styrene sulfonate, polyaniline or several mixtures.
6. a kind of flexible white light device according to claim 1, which is characterized in that constitute the material of the hole injection layer
For metal oxide or organic material, thickness 1-30 nm；The material of hole transmission layer is organic material or metal oxide and have
The mixture of machine material, thickness 10-200 nm；The material of organic luminous layer is a kind of organic material or a variety of organic mixing materials
Material, thickness 5-100 nm；The material for constituting the electron transfer layer is organic material, thickness 10-300 nm；Constitute the cathode
The material of layer is gold, silver, copper, aluminium, magnesium or any two kinds of mixture, thickness 20-2000 nm；Constitute the encapsulated layer
Material is plastics or metal oxide, thickness 100nm-1cm.
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| CN201810801695.1A CN109004094A (en) | 2018-07-20 | 2018-07-20 | A kind of flexible white light device |
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| CN201810801695.1A CN109004094A (en) | 2018-07-20 | 2018-07-20 | A kind of flexible white light device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212119A (en) * | 2019-05-21 | 2019-09-06 | 南昌航空大学 | Electron pole light emitting diode with quantum dots |
| CN110265557A (en) * | 2019-06-05 | 2019-09-20 | 南京邮电大学 | A kind of flexible white light device and preparation method thereof |
| CN111540281A (en) * | 2020-05-19 | 2020-08-14 | Tcl华星光电技术有限公司 | Flexible color filter film, manufacturing method thereof and full-color micro light-emitting diode device |
| CN114203922A (en) * | 2021-12-02 | 2022-03-18 | 长春若水科技发展有限公司 | Flexible organic light-emitting diode based on thin-layer metal electrode and preparation method thereof |
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| TW201017908A (en) * | 2008-10-17 | 2010-05-01 | Yung-Yu Yen | A phosphor tape capable of converting LED blue light into white light |
| CN102569659A (en) * | 2010-12-27 | 2012-07-11 | 苏州晶能科技有限公司 | Organic-inorganic LED (Light-Emitting Diode) surface light source module and manufacturing method thereof |
| CN104576937A (en) * | 2013-10-16 | 2015-04-29 | 海洋王照明科技股份有限公司 | White-light OLED (organic light emission diode) device and preparation method thereof |
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| CN106033789A (en) * | 2015-03-18 | 2016-10-19 | 比亚迪股份有限公司 | Phosphor powder substrate and manufacturing method thereof, and composite luminescence LED and manufacturing method thereof |
| CN106299081A (en) * | 2016-08-05 | 2017-01-04 | 张恒钦 | A kind of preparation method containing fluorescent material flexible LED filament base plate for packaging |
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| CN101593815A (en) * | 2009-06-26 | 2009-12-02 | 天津理工大学 | Based on organic and white color organic electroluminescence device inorganic composite color conversion membrane |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212119A (en) * | 2019-05-21 | 2019-09-06 | 南昌航空大学 | Electron pole light emitting diode with quantum dots |
| CN110265557A (en) * | 2019-06-05 | 2019-09-20 | 南京邮电大学 | A kind of flexible white light device and preparation method thereof |
| CN111540281A (en) * | 2020-05-19 | 2020-08-14 | Tcl华星光电技术有限公司 | Flexible color filter film, manufacturing method thereof and full-color micro light-emitting diode device |
| CN114203922A (en) * | 2021-12-02 | 2022-03-18 | 长春若水科技发展有限公司 | Flexible organic light-emitting diode based on thin-layer metal electrode and preparation method thereof |
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Application publication date: 20181214 |
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