CN104485427B - A kind of transparent Organnic electroluminescent device and preparation method thereof - Google Patents
A kind of transparent Organnic electroluminescent device and preparation method thereof Download PDFInfo
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- CN104485427B CN104485427B CN201410833866.0A CN201410833866A CN104485427B CN 104485427 B CN104485427 B CN 104485427B CN 201410833866 A CN201410833866 A CN 201410833866A CN 104485427 B CN104485427 B CN 104485427B
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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
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Abstract
The invention belongs to display technology field, and in particular to a kind of transparent Organnic electroluminescent device, including the organic light-emitting units and photochromatic layer being stacked, wavelength be 380nm~780nm light irradiation under, photochromatic layer by it is transparent switch to it is opaque.When transparent Organnic electroluminescent device is lighted; due to photochromatic layer in the range of 380nm~780nm can by it is transparent switch to it is opaque; so that transparent Organnic electroluminescent device realizes unidirectional display or unidirectional illumination at work; secret protection is not only advantageous to, also effectively prevent light pollution.The transparent Organnic electroluminescent device solves the problems, such as transparent electro luminescent device unidirectional illumination by the combination of photochromatic layer and filter layer or unidirectionally shown, simple in construction.A kind of preparation method of transparent Organnic electroluminescent device of the present invention, is included in the step of forming photochromatic layer, preparation technology is simple, and cost is low, suitable for large-scale industrial application.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of transparent Organnic electroluminescent device and preparation method thereof.
Background technology
Organnic electroluminescent device (English full name Organic Light-Emitting Display, abbreviation OLED) is main
Dynamic luminescent device, has the advantages that high-contrast, wide viewing angle, low-power consumption, volume are thinner, is expected to show as main flow flat board of future generation
Show technology, be one of the most technology that attracted attention in current flat panel display.
With the progress of information transfer and the evolution of electronic product, except Organnic electroluminescent device reaction speed,
Resolution ratio constantly researches and develops improvement with image quality each side, more pursues the breakthrough in function or display pattern.Therefore, Transparence Display is also
One important directions of following display device development, Transparence Display not only have display function, moreover, with printing opacity, perspective,
Completely cut off the performances such as air circulation, sound insulation and heat-insulation and heat-preservation, can be used for the fields such as vehicle glass, building glass, have huge
Potential using value.
In order to meet to protect privacy and prevent to the light pollution problem in the external world, it is necessary to transparent organic light emitting display energy
The function of unidirectional illumination when enough having work, that is, unilateral luminous when working, the non-working time is in pellucidity.
At present, realize transparent Organnic electroluminescent device it is unidirection luminous mainly in transparent Organnic electroluminescent device
Increase the light valve device of electric field controls, but this kind of mode not only needs to increase the voltage control circuit of light valve device, it is also necessary to
Substrate, electrode, light valve medium are further added by the basis of existing Organnic electroluminescent device and prepares light valve device, technical process is multiple
Miscellaneous, cost is higher.
The content of the invention
Therefore, to be solved by this invention is existing unidirection luminous transparent Organnic electroluminescent device structure and preparation technology
Complexity, the problem of process costs are high, so as to provide a kind of unidirection luminous transparent organic electroluminescence hair simple in construction, process costs are low
Electro-optical device and preparation method thereof.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：
A kind of transparent Organnic electroluminescent device of the present invention, including at least one organic light-emitting units, it is described to have
Machine luminescence unit includes the first transparency electrode layer, luminescent layer, second transparency electrode layer for stacking gradually setting, described transparent organic
El light emitting device also includes being stacked the photochromatic layer on the organic light-emitting units；Wavelength be 380nm~
Under 780nm light irradiation, the photochromatic layer by it is transparent switch to it is opaque.
The transparent Organnic electroluminescent device also includes filter layer, and it is remote that the filter layer is arranged on the photochromatic layer
From the side of the organic light-emitting units.
The cutoff range of the filter layer is：Less than 470nm.
The cutoff range of the filter layer is：490nm~570nm.
The cutoff range of the filter layer is：620nm~780nm.
The photochromatic layer contains photochromic material, and the photochromic material is 380nm~500nm's in wavelength
Under light irradiation so that the photochromatic layer by it is transparent switch to it is opaque.
The photochromic material be silver halide, zinc halide, copper halide, magnesium halide, spiropyran, Luo Fen Evil, piperazine dyestuff,
One or more combinations in dehydrogenation pyridine.
The organic light-emitting units also include electron injecting layer, electron transfer layer, hole blocking layer, electronic barrier layer, sky
One or more combinations in cave transport layer, hole injection layer.
The preparation method of described transparent organic light emitting apparatus, comprises the following steps：
Form organic light-emitting units；
Form photochromatic layer.
The preparation method of described transparent Organnic electroluminescent device, it is preferable that the step of also including forming filter layer.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：
1st, a kind of transparent Organnic electroluminescent device of the present invention, including the organic light-emitting units and light being stacked
Mutagens chromatograph, wavelength be 380nm~780nm light irradiation under, the photochromatic layer by it is transparent switch to it is opaque.When described
When transparent Organnic electroluminescent device is lighted, because the photochromatic layer can be by transparent turn in the range of 380nm~780nm
To be opaque, so that the transparent Organnic electroluminescent device realizes unidirectional display or unidirectional illumination at work, not only
Be advantageous to secret protection, also effectively prevent light pollution.
2nd, a kind of transparent Organnic electroluminescent device of the present invention is additionally provided with filter layer, and the filter layer is arranged on
Side of the photochromatic layer away from the organic light-emitting units.The transparent Organnic electroluminescent device is in off working state
When, the light that is effectively isolated due to the filter layer in environment so that the photochromatic layer is in pellucidity, so that
The transparent Organnic electroluminescent device is in pellucidity in off working state, its printing opacity, the function of perspective is assigned, in vapour
Car glass, building glass field, there is huge potential using value.
3rd, a kind of transparent Organnic electroluminescent device of the present invention passes through photochromatic layer and organic knot of filter layer
Unidirectional illumination or unidirectional display, non-working time are in asking for pellucidity when conjunction solves the work of transparent electro luminescent device
Topic, it is simple in construction.
3rd, the preparation method of a kind of transparent Organnic electroluminescent device of the present invention, is included in form photochromatic layer
The step of, preparation technology is simple, and cost is low, suitable for large-scale industrial application.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the transparent Organnic electroluminescent device described in embodiment 1；
Fig. 2 is the structural representation of the transparent Organnic electroluminescent device described in embodiment 2；
Fig. 3 is the structural representation of the transparent Organnic electroluminescent device described in embodiment 3；
Fig. 4 is the structural representation of the transparent Organnic electroluminescent device described in embodiment 4；
Fig. 5 is the structural representation of the transparent Organnic electroluminescent device described in embodiment 5；
Fig. 6 is the structural representation of the transparent Organnic electroluminescent device described in embodiment 6.
Reference is expressed as in figure：1- substrates, 2- photochromatic layers, 3- organic light-emitting units, 4- encapsulation cover plates, 5- envelopes
Fill layer.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the reality below in conjunction with accompanying drawing to the present invention
The mode of applying is described in further detail.
The present invention can be embodied in many different forms, and should not be construed as limited to embodiment set forth herein.
Conversely, there is provided these embodiments so that the disclosure will be thorough and complete, and the design of the present invention will be fully conveyed to
Those skilled in the art, the present invention will only be defined by the appended claims.In the accompanying drawings, for clarity, Ceng He areas can be exaggerated
The size and relative size in domain.It should be appreciated that when element such as layer, region or substrate are referred to as " formation " or " set
" another element " on " when, the element can be arranged directly on another element, or there may also be intermediary element.
On the contrary, when element is referred to as on " being formed directly into " or " being set directly at " another element, in the absence of intermediary element.
Embodiment 1
The present embodiment provides a kind of transparent Organnic electroluminescent device, as shown in figure 1, the substrate including stacking gradually setting
1st, photochromatic layer 2 and organic light-emitting units 3.As the convertible embodiment of the present invention, the quantity of the organic light-emitting units 3
Can be multiple, in same layer array arrangement.
In the present embodiment, the organic light-emitting units 3 include stacking gradually the first transparency electrode layer of setting, luminescent layer,
Second transparency electrode layer.As the convertible embodiment of the present invention, the organic light-emitting units 3 also include electron injecting layer, electricity
One or more combinations in sub- transport layer, hole blocking layer, electronic barrier layer, hole transmission layer, hole injection layer, equal energy
The purpose of the present invention is realized, belongs to protection scope of the present invention.The structure of organic light-emitting units 3, each layer material therefor and thickness
Degree is compared with technology, and here is omitted.
The substrate 1 is selected from, but not limited to, transparent glass substrate or polymeric substrates, and the present embodiment is preferably glass base
Plate.
The photochromatic layer 2 is transparent organic layer or the transparent inorganic layer doped with photochromic material, is in wavelength
Under 380nm~780nm light irradiation, the photochromatic layer 2 by it is transparent switch to it is opaque.
In the present embodiment, preferably described photochromic material is in the case where wavelength is 380~500nm light irradiation so that described
Photochromatic layer 2 by it is transparent switch to it is opaque.The photochromic material is silver halide, zinc halide, copper halide, magnesium halide, spiral shell
One or more combinations in ring pyrans, Luo Fen Evil, piperazine dyestuff, dehydrogenation pyridine, the matrix material of photochromatic layer 2 are selected from
But silica or organic resin are not limited to, the doping of the photochromic material is 0.011wt%~10wt%.This implementation
Example is preferably the basis mixed with spiropyran, and thickness 50nm, doping metering is 1wt%.
When the transparent Organnic electroluminescent device is in illuminating state, due to the photochromatic layer 2 380nm~
In the range of 780nm by it is transparent switch to it is opaque so that the transparent Organnic electroluminescent device is unilateral luminous at work
(direction of arrow is light direction in figure), that is, unidirectional display or unidirectional illumination are realized, is not only advantageous to secret protection, it is also effective
Avoid light pollution.
In the present embodiment, the transparent Organnic electroluminescent device also includes filter layer (not shown), the optical filtering
Layer is arranged on side of the photochromatic layer 2 away from the organic light-emitting units 3.The cutoff range of the filter layer be less than
470nm blue light and purple light, or 490nm~570nm green glow, or 620nm~780nm feux rouges, can be with light in filtering environmental
Cause the sensitive band of off-color material.When the transparent Organnic electroluminescent device is in off working state, due to the filter layer
The light being effectively isolated in environment so that the photochromatic layer 2 is in pellucidity, so that the transparent organic electroluminescence
Light-emitting device is in pellucidity in off working state, its printing opacity, the function of perspective is assigned, in vehicle glass, building glass
Field, there is huge potential using value.A kind of described transparent Organnic electroluminescent device passes through photochromatic layer and filter
Unidirectional illumination or unidirectional display, non-working time are in saturating when the combination of photosphere solves the work of transparent electro luminescent device
It is the problem of bright state, simple in construction.Filter layer described in the present embodiment is salicylic acid ester layer, the convertible implementation as the present invention
Example, the filter material can also be salicylate and its derivative, benzophenone and its derivative, BTA and its derivative
Thing, acrylonitrile and its derivative, triazine and its derivative and one or more combinations in hindered amine and its derivative.
The preparation method of the transparent organic light emitting apparatus, comprises the following steps：
S1, form filter layer by coating processes on the substrate 1；
S2, form photochromatic layer 2 by coating processes on the filter layer；Convertible implementation as the present invention
Example, the preparation technology not limited to this of the photochromatic layer 2, can be selected according to the composition of the photochromatic layer 2.
S3, organic light-emitting units 3 are formed in the photochromatic layer 2, its preparation technology is compared with technology.
Embodiment 2
The present embodiment provides a kind of transparent Organnic electroluminescent device, as shown in Fig. 2 the substrate including stacking setting respectively
The photochromatic layer 2 and organic light-emitting units 3 of 1 both sides.As the convertible embodiment of the present invention, the organic light-emitting units 3
Quantity can be it is multiple, in same layer array arrangement.
The composition of the photochromatic layer 2 and the organic light-emitting units 3, structure are the same as embodiment 1.
The preparation method of the transparent Organnic electroluminescent device, comprises the following steps：
S1, photochromatic layer 2 is prepared by coated technique on the substrate 1；
S2, in side of the substrate 1 away from the photochromatic layer 2 prepare organic light-emitting units 3.
Embodiment 3
The present embodiment provides a kind of transparent Organnic electroluminescent device, as shown in figure 3, including stacking gradually the photic of setting
Photochromic layer 2 and organic light-emitting units 3.The structure of the organic light-emitting units 3 is the same as embodiment 1.Convertible reality as the present invention
Example is applied, the quantity of the organic light-emitting units 3 can be multiple, in same layer array arrangement.
The photochromatic layer 2 is transparent organic layer or the transparent inorganic layer doped with photochromic material, is in wavelength
Under 380nm~780nm light irradiation, the photochromatic layer 2 by it is transparent switch to it is opaque.
Photochromatic layer 2 described in the present embodiment should have the function of substrate concurrently, therefore be preferably mixed with dehydrogenation pyridine
Acrylate resin layer, thickness 50nm, doping metering is 10wt%.
When the transparent Organnic electroluminescent device is in illuminating state, due to the photochromatic layer 2 380nm~
In the range of 780nm by it is transparent switch to it is opaque so that the transparent Organnic electroluminescent device is unilateral luminous at work
(direction of arrow is light direction in figure), that is, unidirectional display or unidirectional illumination are realized, is not only advantageous to secret protection, it is also effective
Avoid light pollution.
The preparation method of the transparent Organnic electroluminescent device, comprises the following steps：
S1, pass through coating processes formation photochromatic layer 2；
S2, organic light-emitting units 3 are formed in the photochromatic layer 2, preparation technology is compared with technology.
Embodiment 4
The present embodiment provides a kind of transparent Organnic electroluminescent device, as shown in figure 4, the substrate including stacking gradually setting
1st, organic light-emitting units 3 and photochromatic layer 2.As the convertible embodiment of the present invention, the quantity of the organic light-emitting units 3
Can be multiple, in same layer array arrangement.
The substrate 1, organic light-emitting units 3, the concrete structure of photochromatic layer 2 and preparation technology are the same as embodiment 1.
Embodiment 5
The present embodiment provides a kind of transparent Organnic electroluminescent device, as shown in figure 5, the substrate including stacking gradually setting
1 and organic light-emitting units 3, the organic light-emitting units 3 being projected in the range of the substrate 1 on the substrate 1, formed
Light-emitting zone.As the convertible embodiment of the present invention, the quantity of the organic light-emitting units 3 can be multiple, in same layer battle array
Row arrangement.
The transparent Organnic electroluminescent device also includes encapsulated layer 5 and photochromatic layer 2, and the encapsulated layer 5 is arranged on
The substrate 1 on the non-luminous region of the organic light-emitting units 3, by the encapsulated layer 5 detained by the photochromatic layer 2
Close on the substrate 1, form the sealing cavity for including the organic light-emitting units 3.
The photochromatic layer 2 is preferably the silicon dioxide layer mixed with silver halide, and thickness 0.5mm, adulterating metering is
0.01wt%.
The structure of the organic light-emitting units 3 is with preparation technology with embodiment 1.
The preparation method of the transparent Organnic electroluminescent device, comprises the following steps：
S1, organic light-emitting units 3 are formed on substrate 1；
S2, the organic light-emitting units 3 formation encapsulated layer 5 is surround on the substrate 1 by coating processes；
S3, pass through coating processes formation photochromatic layer 2；
S4, the photochromatic layer 2 is fastened on the encapsulated layer 5, formed close comprising the organic light-emitting units 3
Close cavity.
Embodiment 6
The present embodiment provides a kind of transparent Organnic electroluminescent device, as shown in fig. 6, the substrate including stacking gradually setting
1 and organic light-emitting units 3, the organic light-emitting units 3 being projected in the range of the substrate 1 on the substrate 1, formed
Light-emitting zone.
The transparent Organnic electroluminescent device also includes encapsulated layer 5, encapsulation cover plate 4 and photochromatic layer 2, the encapsulation
Layer 5 is arranged on the substrate 1 on the non-luminous region of the organic light-emitting units 3, and the encapsulation cover plate 4 passes through the envelope
Dress layer 5 is fastened on the substrate 1, forms the sealing cavity for including the organic light-emitting units 3.The photochromatic layer 2 is set
Put in side of the encapsulation cover plate 4 away from the organic light-emitting units 3.
As the convertible embodiment of the present invention, it is close that the photochromatic layer 2 can also be arranged on the encapsulation cover plate 4
The side of the organic light-emitting units 3, can realize the purpose of the present invention, belong to protection scope of the present invention.
In the present embodiment, the substrate 1, organic light-emitting units 3, the structure of encapsulated layer 5, composition are the same as embodiment 5.
The preparation method of the transparent Organnic electroluminescent device, comprises the following steps：
S1, organic light-emitting units 3 are formed on substrate 1；
S2, form encapsulated layer 5 around the organic light-emitting units 3 on the substrate 1；
S3, the encapsulation cover plate 4 is fastened on the encapsulated layer 5, formed closed comprising the organic light-emitting units 3
Cavity；
S4, form photochromatic layer 2 by coating processes on encapsulation cover plate 4.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in protection scope of the present invention.
Claims (8)
1. a kind of transparent Organnic electroluminescent device, including at least one organic light-emitting units, the organic light-emitting units include
Stack gradually the first transparency electrode layer, luminescent layer, second transparency electrode layer of setting, it is characterised in that the transparent Organic Electricity
Electroluminescent devices also include being stacked the photochromatic layer on the organic light-emitting units；It is 380nm~780nm in wavelength
Light irradiation under, the photochromatic layer by it is transparent switch to it is opaque；Also include filter layer, the filter layer is arranged on the light
Side of the mutagens chromatograph away from the organic light-emitting units；The photochromatic layer contains photochromic material, the light-induced variable
Color material wavelength be 380nm~500nm light irradiation under so that the photochromatic layer by it is transparent switch to it is opaque；It is described
The doping of photochromic material is 0.011wt%~10wt%.
2. transparent Organnic electroluminescent device according to claim 1, it is characterised in that the cutoff range of the filter layer
For：Less than 470nm.
3. transparent Organnic electroluminescent device according to claim 1, it is characterised in that the cutoff range of the filter layer
For：490nm~570nm.
4. transparent Organnic electroluminescent device according to claim 1, it is characterised in that the cutoff range of the filter layer
For：620nm~780nm.
5. transparent Organnic electroluminescent device according to claim 1, it is characterised in that the photochromic material is halogen
Change one or more groups in silver, zinc halide, copper halide, magnesium halide, spiropyran, Luo Fen Evil, piperazine dyestuff, dehydrogenation pyridine
Close.
6. according to any described transparent Organnic electroluminescent devices of claim 1-5, it is characterised in that the organic light emission list
Member also includes in electron injecting layer, electron transfer layer, hole blocking layer, electronic barrier layer, hole transmission layer, hole injection layer
One or more combinations.
7. the preparation method of any described transparent organic light emitting apparatus of a kind of claim 1-6, it is characterised in that including as follows
Step：
Form organic light-emitting units；
Form photochromatic layer.
8. the preparation method of transparent Organnic electroluminescent device according to claim 7, it is characterised in that also include being formed
The step of filter layer.
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| CN105702877B (en) * | 2016-04-05 | 2018-11-06 | 深圳市华星光电技术有限公司 | OLED display panel and preparation method thereof |
| CN105702705A (en) | 2016-04-05 | 2016-06-22 | 深圳市华星光电技术有限公司 | OLED (organic light-emitting diode) display panel and preparation method therefor |
| CN105870351B (en) * | 2016-04-05 | 2018-07-03 | 深圳市华星光电技术有限公司 | OLED display panel and preparation method thereof |
| CN107305903B (en) * | 2016-04-20 | 2020-04-07 | 上海和辉光电有限公司 | Transparent display device |
| KR102668520B1 (en) | 2018-12-31 | 2024-05-22 | 엘지디스플레이 주식회사 | Transparent display device |
| CN113448089B (en) | 2020-03-28 | 2023-05-09 | 华为技术有限公司 | Augmented reality device and display method thereof |
| CN113448088A (en) * | 2020-03-28 | 2021-09-28 | 华为技术有限公司 | Augmented reality device |
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| KR101869062B1 (en) * | 2011-03-04 | 2018-06-20 | 삼성디스플레이 주식회사 | Organic light emitting device |
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| TW201041439A (en) * | 2009-05-08 | 2010-11-16 | Univ Shu Te | A display device |
| CN102737576A (en) * | 2011-04-12 | 2012-10-17 | 神基科技股份有限公司 | Transparent display device and operating method thereof |
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Effective date of registration: 20181212 Address after: 065700 Lanyuan S3 Building, Peacock City, Bazhou, Langfang City, Hebei Province Patentee after: Bazhou Yungu Electronic Technology Co. Ltd. Address before: 100085 First Floor of Huanyang Building, No. 1 Shangdi East Road, Haidian District, Beijing Patentee before: Weixinnuo Science and Technology Co., Ltd., Beijing |
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Application publication date: 20150401 Assignee: Yungu (Gu'an) Technology Co., Ltd.|Kunshan Guoxian photoelectric Co., Ltd.|Kunshan Institute of technology new flat panel display technology center Co., Ltd Assignor: Bazhou Yungu Electronic Technology Co. Ltd. Contract record no.: X2019990000154 Denomination of invention: Transparent organic electroluminescence device and preparing method thereof Granted publication date: 20180213 License type: Common License Record date: 20191030 |
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