CN107403872A - A kind of tandem OLED - Google Patents

A kind of tandem OLED Download PDF

Info

Publication number
CN107403872A
CN107403872A CN201710607040.6A CN201710607040A CN107403872A CN 107403872 A CN107403872 A CN 107403872A CN 201710607040 A CN201710607040 A CN 201710607040A CN 107403872 A CN107403872 A CN 107403872A
Authority
CN
China
Prior art keywords
layer
undoped
light emitting
emitting functional
luminescence unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710607040.6A
Other languages
Chinese (zh)
Inventor
罗东向
杨炎锋
刘佰全
杨亿斌
李京波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong University of Technology
Original Assignee
Guangdong University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong University of Technology filed Critical Guangdong University of Technology
Priority to CN201710607040.6A priority Critical patent/CN107403872A/en
Publication of CN107403872A publication Critical patent/CN107403872A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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]
    • H10K50/19—Tandem OLEDs

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

This application discloses a kind of tandem OLED, the tandem OLED by the use of undoped luminescence unit as multiple light emitting functional layers of tandem OLED in luminescence unit, and preparing undoped luminescence unit using undoped luminescent material has the characteristics of preparation technology is easy to be low with cost, so as to reduce the complex degree of structure of tandem OLED, and reduce the preparation difficulty of tandem OLED.

Description

A kind of tandem OLED
Technical field
The application is related to LED technology field, more specifically to a kind of tandem OLED.
Background technology
OLED (Organic Light Emitting Diodes, organic electroluminescence device), also known as organic light-emitting diodes Pipe, OLED have from main light emission, almost wide viewing angle, infinite high contrast, low in energy consumption, high response speed, in light weight, temperature Wide adaptation range, area are big, all solidstate, flexibility the advantages that, it has important application in display with lighting field because by Academia and the extensive concern of industrial quarters.
Tandem OLED refers to multiple independent luminescence units being stacked up, and makes an equal amount of electric current successively by multiple Different luminescence units light jointly so as to improve the technology of the luminosity of tandem OLED and efficiency, further increases The efficiency of OLED and life-span.In tandem OLED generally by charge generating layers (Charge Generation Layer, CGL) multiple light emitting functional layers are together in series as articulamentum, compared with traditional single-shot light unit device, the electricity of Tandem devices Efficiency and the increase of luminosity capital north are flowed, and under same brightness, the current density of tandem OLED is relatively low, so as to significantly Add the life-span of tandem OLED.2005, report series connection WOLED devices first by scholar, its structure is：ITO/NPB/ DNA/BCP/Alq3/BCP:Li/V2O5/NPB/Alq3:DCJTB/Alq3/LiF/Al (Appl.Phys.Lett.2005,87, 173510.)；In the device, blue light and green glow, Alq3 are produced using DNA/BCP/Alq3 as the first luminescence unit:DCJTB makees Feux rouges, BCP are produced for the second luminescence unit:Li/V2O5 effectively connects two luminescence units as charge generating layers.Hole and Electronics produces in charge generating layers, under electric field action, is respectively transmitted in adjacent NPB and Alq3 layers.And in this article Middle part is offered, the current efficiency of series connection WOLED devices and brightness are both greater than the summation (maximal efficiency of two single-shot light unit devices Up to 10.7cdA-1, high-high brightness 10200cdm-2), and power efficiency is then equal to the summation of two single-shot light unit devices (2.6lm·W-1)
Meanwhile Chang et al. is using the relatively low Mg of optical absorptivity:Alq3/WO3 is as charge generating layers, by two lists White-light emitting unit connects, and finds to be influenceed by microcavity effect, the efficiency (22cdA for the WOLED that connects-1) it is single-shot light list Three times of component, and in 100cdm-2Under brightness, the life-span more than 80000h (Appl.Phys.Lett.2005,87, 253501.) is nearest, and Son et al. synthesizes a kind of efficient blue phosphorescent main body (TATA) first, can be based on The luminous high efficiency blue OLED (46.2cdA of FIrpic-1, 45.4lmW-1), and by efficient gold-tinted elementary layer (86.8cdA-1, 90.5lmW-1) pass through charge generating layers TmPyPB：Rb2CO3/Al/HAT-CN is attached.Device to open bright voltage (bright Spend for 1cdm-2) as little as 4.55V, maximum power efficiency 65.4lmW-1, maximum current efficiency is 129.5cdA-1, most Big external quantum efficiency is 49.5%.Even in 1000cdm-2Under brightness, the power efficiency of device still may be up to being 63.1lm W-1, current efficiency is up to 128.8cdA-1, external quantum efficiency is up to 49.2%, this fully illustrate tandem OLED it is good before Scape (J.Mater.Chem.C 2013,1,5008.).
But the structure of tandem OLED of the prior art is complex, it is larger to prepare difficulty.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of tandem OLED, to realize the structure for reducing tandem OLED Complexity, reduce the purpose of the preparation difficulty of tandem OLED.
To realize above-mentioned technical purpose, the embodiments of the invention provide following technical scheme：
A kind of tandem OLED, including：Negative electrode, anode, multiple light emitting functional layers between the negative electrode and anode and Connect the charge generating layers of two neighboring light emitting functional layer；Wherein,
The light emitting functional layer includes at least one luminescence unit, and the luminescence unit is undoped luminescence unit；
White light is formed after the emergent ray convergence of all luminescence units.
Optionally, the spectrum of the emergent ray of each luminescence unit is complementary in visible-range.
Optionally, the luminescence unit is undoped blu-ray layer or undoped gold-tinted layer or undoped feux rouges layer or undoped Green glow layer.
Optionally, the quantity of the light emitting functional layer is two；Wherein,
First light emitting functional layer includes a luminescence unit；
Second light emitting functional layer includes at least two luminescence units.
Optionally, when the luminescence unit in first light emitting functional layer is undoped feux rouges layer；
At least two luminescence units in second light emitting functional layer are：
Undoped blu-ray layer and undoped gold-tinted layer；
Or
Undoped blu-ray layer, undoped gold-tinted layer and non-doping green layer；
When the luminescence unit in first light emitting functional layer is non-doping green layer；
At least two luminescence units in second light emitting functional layer are：
Undoped blu-ray layer and undoped gold-tinted layer；
Or
Undoped blu-ray layer and undoped feux rouges layer；
Or
Undoped blu-ray layer, undoped gold-tinted layer and non-doping green layer；
When the luminescence unit in first light emitting functional layer is undoped gold-tinted layer；
At least two luminescence units in second light emitting functional layer are：
Undoped blu-ray layer and undoped feux rouges layer；
Or
Undoped blu-ray layer, non-doping green layer and undoped feux rouges layer.
Optionally, when the light emitting functional layer includes two or more luminescence units, the tandem OLED is also Including：
Wall between two neighboring luminescence unit.
Optionally, the wall is undoped wall.
Optionally, the triplet of the wall is more than or equal to preset value；
The preset value is the triplet and 0.2eV of the wall luminescence unit adjacent with the wall The maximum of difference.
Optionally, the light emitting functional layer includes：
Hole injection layer, hole transmission layer, light emitting functional layer, electron transfer layer and the electron injecting layer stacked gradually；Its In,
The hole injection layer is close to the anode, and the electron injecting layer is close to the negative electrode.
It can be seen from the above technical proposal that the embodiments of the invention provide a kind of tandem OLED, the tandem OLED profit Luminescence unit in by the use of undoped luminescence unit as multiple light emitting functional layers of tandem OLED, and utilize undoped luminescent material Preparing undoped luminescence unit has the characteristics of preparation technology is easy to be low with cost, so as to reduce the complicated of tandem OLED Degree, and reduce the preparation difficulty of tandem OLED.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of structural representation for tandem OLED that one embodiment of the application provides；
Fig. 2-Fig. 8 is the structural representation for the tandem OLED with two light emitting functional layers that the embodiment of the present application provides；
Fig. 9-Figure 15 is the knot with wall and the tandem OLED of two light emitting functional layers that the embodiment of the present application provides Structure schematic diagram；
Figure 16 provides the performance schematic diagram of tandem OLED for one embodiment of the application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.
The embodiment of the present application provides a kind of tandem OLED, as shown in figure 1, including：Negative electrode 400, anode 100, positioned at institute State multiple light emitting functional layers 200 between negative electrode 400 and anode 100 and connect the electric charge life of two neighboring light emitting functional layer 200 Stratification 300；Wherein,
The light emitting functional layer 200 includes at least one luminescence unit, and the luminescence unit is undoped luminescence unit；
White light is formed after the emergent ray convergence of all luminescence units.
In Fig. 1, further it is shown that substrate A10.
White light is formed after the emergent ray convergence that the tandem OLED that the present embodiment provides passes through undoped luminescence unit to carry out Outgoing, it is achieved thereby that a kind of tandem OLED for being capable of ejecting white light is provided, and because the light emitting functional layer 200 includes Luminescence unit be the undoped luminescence unit with the easy feature low with cost of preparation technology so that the series connection OLED preparation difficulty reduces, and reduces the complex degree of structure of the tandem OLED.
It is that the white light of tandem OLED outgoing can be made up of three coloured light (red, blue, yellow) or by four coloured light (red, yellow, blue, green) composition, the white light of three coloured light or four coloured light composition can improve the aobvious of the white light of tandem OLED outgoing Colour index.Because when the main ripple that seldom in light source light spectrum or shortage object is reflected under reference light source, color can be made Obvious gamut (color shift) is produced, aberration degree is bigger, and light source is poorer to the colour rendering of the color, and red blue yellow three colors The main ripple that light or bluish-green four coloured light of reddish yellow are reflected by object under visible light source.And colour rendering index refers to light source to object Coloration ability, the colour rendering index of sunshine are defined as 100.
Specifically, on the basis of above-described embodiment, in one embodiment of the application, each luminescence unit goes out The spectrum for penetrating light is complementary in visible-range.
More specifically, the spectrum of the emergent ray of each luminescence unit is complementary in visible-range, to avoid out There is the situation of trough in a certain wave band in the white light penetrated so that the spectrum of the emergent ray of the tandem OLED can more added with Effect ground covering visible light.For example when forming white light by blue light and gold-tinted and being emitted, it can be compensated using feux rouges, With allow device colour rendering index and colour temperature arbitrarily adjust, reach optimal..
On the basis of above-described embodiment, in another embodiment of the application, the quantity of the light emitting functional layer 200 For two；Wherein,
First light emitting functional layer 200 includes a luminescence unit；
Second light emitting functional layer 200 includes at least two luminescence units.
Wherein, two luminescence units in second light emitting functional layer 200 are to form white light outgoing, and described the The luminescence unit of one light emitting functional layer 200 is used to compensate the white light of the second light emitting functional layer 200 outgoing.
Specifically, with reference to figure 2- Fig. 8, when the luminescence unit in first light emitting functional layer 200 is undoped feux rouges layer When；
At least two luminescence units in second light emitting functional layer 200 are：
Undoped blu-ray layer and undoped gold-tinted layer；
Or
Undoped blu-ray layer, undoped gold-tinted layer and non-doping green layer；
When the luminescence unit in first light emitting functional layer 200 is non-doping green layer；
At least two luminescence units in second light emitting functional layer 200 are：
Undoped blu-ray layer and undoped gold-tinted layer；
Or
Undoped blu-ray layer and undoped feux rouges layer；
Or
Undoped blu-ray layer, undoped gold-tinted layer and non-doping green layer；
When the luminescence unit in first light emitting functional layer 200 is undoped gold-tinted layer；
At least two luminescence units in second light emitting functional layer 200 are：
Undoped blu-ray layer and undoped feux rouges layer；
Or
Undoped blu-ray layer, non-doping green layer and undoped feux rouges layer.
It can be seen that the light emitting functional layer 200 includes：
Hole injection layer, hole transmission layer, light emitting functional layer 200, electron transfer layer and the electron injecting layer stacked gradually； Wherein,
The hole injection layer is close to the anode 100, and the electron injecting layer is close to the negative electrode 400.
With reference to figure 9- Figure 15, when the light emitting functional layer 200 includes two or more luminescence units, the string Connection OLED also includes：
Wall between two neighboring luminescence unit.
Preferably, the wall is undoped wall.
Likewise, the preparation technology of undoped wall is relatively simple, the preparation technology of whole tandem OLED can be simplified.
Optionally, the span of the thickness of the wall is 0.1-30nm, including endpoint value；It is it is furthermore preferred that described The span of the thickness of wall is 0.1-10nm, including endpoint value.
It should be noted that the energy level of the wall needs the energy level progress of directly adjacent luminescence unit Match somebody with somebody, the triplet of especially described wall is more than or equal to preset value；
The preset value is the triplet and 0.2eV of the wall luminescence unit adjacent with the wall The maximum of difference.
Optionally, the thickness of the undoped blu-ray layer, undoped gold-tinted layer, undoped feux rouges layer and non-doping green layer Span can be 0.01-200nm, including endpoint value, it is preferred that the undoped blu-ray layer, undoped gold-tinted layer, non- The span of the thickness of doping feux rouges layer and non-doping green layer is 0.01-100nm, including endpoint value.
On the basis of above-described embodiment, in the specific embodiment of the application, there is provided a kind of specific series connection OLED structure, with reference to figure M, the structure of the tandem OLED includes what is stacked gradually：Substrate, anode 100, hole injection layer, Hole transmission layer, red phosphorescent layer, electron transfer layer, electron injecting layer, charge generating layers 300, hole transmission layer, yellow phosphorescence Layer, wall, blue fluorescent body, electron transfer layer, the electron injecting layer, (ITO/HAT-CN (100nm)/NPB of negative electrode 400 (15nm)/TCTA(5nm)/Ir(piq)3(0.3nm)/Bepp2(15nm)/Bepp2:KBH4 (10nm, 15%)/HAT-CN (110nm)/NPB(15nm)/TCTA(5nm)/Ir(dmppy)2(dpp)(0.9nm)/TCTA(2nm)/DSA-ph(0.5nm)/ TmPyPB(50nm)/Cs2CO3(1nm)/Al(200nm)。
Wherein, the hole injection layer is the thick HAT-CN films of 100nm.(in the other embodiment of the application, the layer The optional span of thickness is 0.1-200nm)；
The hole transmission layer includes the hole transmission layer 1 and hole transmission layer 2 stacked gradually, the hole transmission layer 1 For the thick NPB films of 15nm, the hole transmission layer 2 is the thick TCTA films of 5nm.(in the other embodiment of the application, should The optional span of thickness degree is 0.1-50nm)；
The red phosphorescent layer is 0.3nm Ir (piq)3Film.(in the other embodiment of the application, the thickness degree Optional span be 0.01-20nm)；
The electron transfer layer is the thick Bepp of 15nm2Film.(in the other embodiment of the application, the thickness degree Optional span is 0.01-30nm)；
The electron transfer layer is the thick Bepp of 10nm2:KBH4Film.(in the other embodiment of the application, the thickness The optional span of degree is 0.01-30nm)；
The charge generating layers 300 be the thick HAT-CN of 110nm (in the other embodiment of the application, the thickness degree Optional span is 0.1-200nm) with 15nm NPB films.(in the other embodiment of the application, the thickness degree can Selected value scope is 0.01-35nm)；
The hole transmission layer is the thick TCTA films of 5nm.(in the other embodiment of the application, the thickness degree can Selected value scope is 0.01-20nm)；
The yellow phosphorescence layer is 0.9nm Ir (dmppy)2(dpp) film.(in the other embodiment of the application, should The optional span of thickness degree is 0.01-10nm)；
The wall is 2nm TCTA films.(in the other embodiment of the application, the thickness degree can selected value Scope is 0.01-20nm)；
The blue fluorescent body is the thick DSA-ph films of 0.5nm.(in the other embodiment of the application, the thickness degree Optional span be 0.01-10nm)；
The electron transfer layer is the thick TmPyPB films of 50nm.(in the other embodiment of the application, the thickness degree Optional span is 0.1-100nm)；
The electron injecting layer is the thick Cs of 1nm2CO3Film.(in the other embodiment of the application, the thickness degree can Selected value scope is 0.01-20nm)；
The negative electrode 400 is the thick Al films of 200nm.
The tandem OLED is prepared by the following method：
1st, ito thin film is prepared as anode 100 using sputtering method on substrate.
2nd, the HAT-CN for preparing 100nm using vacuum deposition method on anode 100 again is used as hole injection layer.
3rd, the NPB films for preparing 15nm thickness using vacuum deposition method on the hole injection layer are used as hole transmission layer 1。
4th, the TCTA films for preparing 5nm thickness using vacuum deposition method on the hole injection layer 1 are used as hole transport Layer 2.
5th, the Ir (piq) of 0.3nm thickness is prepared with vacuum deposition method on the hole injection layer 23Film is as red Color phosphorescent layer.
7th, the Bepp of 15nm thickness is prepared with vacuum deposition method on the red phosphorescent layer2Film is as electric transmission Layer.
8th, the Bepp2 of 10nm thickness is prepared with vacuum deposition method on layer by layer in the electric transmission：KBH4 film conducts Electron injecting layer.
9th, 110nm thick HAT-CN and 15nm NPB films are prepared with vacuum deposition method on the electron injecting layer Thickness is used as charge generating layers 300.
10th, the TCTA films for preparing 5nm thickness using vacuum deposition method on the charge generating layers 300 pass as hole Defeated layer.
11st, the Ir (dmppy) of 0.9nm thickness is prepared with vacuum deposition method on the hole injection layer2(dpp) film As yellow phosphorescence layer.
12nd, the TCTA films for preparing 2nm thickness using vacuum deposition method on the yellow phosphorescence layer are used as wall.
13rd, vacuum deposition method prepares the DSA-ph films of 0.5nm thickness as blue fluorescent body on the wall.
14, the TmPyPB films for preparing 50nm thickness using vacuum deposition method on the blue phosphorescent layer pass as electronics Defeated layer.
15th, 1nm Cs is prepared with vacuum deposition method on the electron transport layer2CO3Film is as electron injecting layer.
16th, the Al films for preparing 200nm using vacuum deposition method on the electron injecting layer are used as negative electrode 400.
The performance of tandem OLED device to being prepared by above-mentioned flow detects, and the spectrogram of the device is as schemed Shown in 16.The device is in 1000cd/m2Under chromaticity coordinates be (0.35,0.41), CRI=84.
And in the preparation technology of the device, luminescent layer is not related to the use of any doping techniques, have simple process, The advantages of cost is low.
In summary, the embodiment of the present application provides a kind of tandem OLED, and the tandem OLED utilizes undoped luminescence unit As the luminescence unit in multiple light emitting functional layers of tandem OLED, and undoped luminous list is prepared using undoped luminescent material Member has the characteristics of preparation technology is easy to be low with cost, so as to reduce the complex degree of structure of tandem OLED, and reduces The preparation difficulty of tandem OLED.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or using the present invention. A variety of modifications to these embodiments will be apparent for those skilled in the art, as defined herein General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one The most wide scope caused.

Claims (9)

  1. A kind of 1. tandem OLED, it is characterised in that including：It is negative electrode, anode, multiple luminous between the negative electrode and anode Functional layer and the charge generating layers for connecting two neighboring light emitting functional layer；Wherein,
    The light emitting functional layer includes at least one luminescence unit, and the luminescence unit is undoped luminescence unit；
    White light is formed after the emergent ray convergence of all luminescence units.
  2. 2. tandem OLED according to claim 1, it is characterised in that the spectrum of the emergent ray of each luminescence unit exists It is complementary in visible-range.
  3. 3. tandem OLED according to claim 1, it is characterised in that the luminescence unit is undoped blu-ray layer or non-mixed Miscellaneous gold-tinted layer or undoped feux rouges layer or non-doping green layer.
  4. 4. tandem OLED according to claim 1, it is characterised in that the quantity of the light emitting functional layer is two；Wherein,
    First light emitting functional layer includes a luminescence unit；
    Second light emitting functional layer includes at least two luminescence units.
  5. 5. tandem OLED according to claim 4, it is characterised in that the luminescence unit in first light emitting functional layer For undoped feux rouges layer when；
    At least two luminescence units in second light emitting functional layer are：
    Undoped blu-ray layer and undoped gold-tinted layer；
    Or
    Undoped blu-ray layer, undoped gold-tinted layer and non-doping green layer；
    When the luminescence unit in first light emitting functional layer is non-doping green layer；
    At least two luminescence units in second light emitting functional layer are：
    Undoped blu-ray layer and undoped gold-tinted layer；
    Or
    Undoped blu-ray layer and undoped feux rouges layer；
    Or
    Undoped blu-ray layer, undoped gold-tinted layer and non-doping green layer；
    When the luminescence unit in first light emitting functional layer is undoped gold-tinted layer；
    At least two luminescence units in second light emitting functional layer are：
    Undoped blu-ray layer and undoped feux rouges layer；
    Or
    Undoped blu-ray layer, non-doping green layer and undoped feux rouges layer.
  6. 6. tandem OLED according to claim 1, it is characterised in that when the light emitting functional layer includes two or two During above luminescence unit, the tandem OLED also includes：
    Wall between two neighboring luminescence unit.
  7. 7. tandem OLED according to claim 6, it is characterised in that the wall is undoped wall.
  8. 8. tandem OLED according to claim 6, it is characterised in that the triplet of the wall is more than or equal to Preset value；
    The preset value be the wall luminescence unit adjacent with the wall triplet and 0.2eV it is poor Maximum.
  9. 9. tandem OLED according to claim 1, it is characterised in that the light emitting functional layer includes：
    Hole injection layer, hole transmission layer, light emitting functional layer, electron transfer layer and the electron injecting layer stacked gradually；Wherein,
    The hole injection layer is close to the anode, and the electron injecting layer is close to the negative electrode.
CN201710607040.6A 2017-07-24 2017-07-24 A kind of tandem OLED Pending CN107403872A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710607040.6A CN107403872A (en) 2017-07-24 2017-07-24 A kind of tandem OLED

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710607040.6A CN107403872A (en) 2017-07-24 2017-07-24 A kind of tandem OLED

Publications (1)

Publication Number Publication Date
CN107403872A true CN107403872A (en) 2017-11-28

Family

ID=60400884

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710607040.6A Pending CN107403872A (en) 2017-07-24 2017-07-24 A kind of tandem OLED

Country Status (1)

Country Link
CN (1) CN107403872A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101752509A (en) * 2008-12-01 2010-06-23 乐金显示有限公司 White organic light emitting device and method for manufacturing the same
US20110215714A1 (en) * 2010-03-02 2011-09-08 Semiconductor Energy Laboratory Co., Ltd. Light-Emitting Element and Lighting Device
CN103165815A (en) * 2011-12-14 2013-06-19 海洋王照明科技股份有限公司 Undoped efficient white organic emitting device and preparation method thereof
CN105489783A (en) * 2016-01-22 2016-04-13 工业和信息化部电子第五研究所 Non-doped white light organic electroluminescence device
CN107302058A (en) * 2017-05-23 2017-10-27 广东工业大学 A kind of undoped white-light emitting layer series connection organic electroluminescence device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101752509A (en) * 2008-12-01 2010-06-23 乐金显示有限公司 White organic light emitting device and method for manufacturing the same
US20110215714A1 (en) * 2010-03-02 2011-09-08 Semiconductor Energy Laboratory Co., Ltd. Light-Emitting Element and Lighting Device
CN103165815A (en) * 2011-12-14 2013-06-19 海洋王照明科技股份有限公司 Undoped efficient white organic emitting device and preparation method thereof
CN105489783A (en) * 2016-01-22 2016-04-13 工业和信息化部电子第五研究所 Non-doped white light organic electroluminescence device
CN107302058A (en) * 2017-05-23 2017-10-27 广东工业大学 A kind of undoped white-light emitting layer series connection organic electroluminescence device

Similar Documents

Publication Publication Date Title
CN106972111B (en) Organic luminescent device and display device
CN106997926B (en) A kind of white light quantum point electroluminescent device
CN101055923B (en) Organic electroluminescence device and method for fabricating the same
CN108922906A (en) OLED display
CN106784358A (en) A kind of white light organic electroluminescent device
CN102456847A (en) White organic light emitting device
CN106664768B (en) Organic electroluminescent device and lighting device
CN102779948B (en) White color organic electroluminescence device and manufacture method thereof
CN107256927A (en) Organic luminescent device and display device
CN106997889A (en) A kind of RGB color display device based on quanta point electroluminescent device
CN108269937A (en) A kind of hydridization white light organic electroluminescent device of efficient high color rendering index (CRI)
CN105165124A (en) Organic electroluminescence element
CN107591491A (en) A kind of undoped white-light emitting layer series connection organic electroluminescence device and preparation method thereof
CN101079471B (en) An organic EL part
CN103000822A (en) Preparing method for organic white LED illumination light source with high color-rendering index and adjustable color temperature
CN106997890A (en) A kind of chromatic display based on quanta point electroluminescent device
CN106328818B (en) Fluorescent/phosphorescent mixed type white organic LED
CN107507922A (en) One kind series connection organic electroluminescence device
US20220278293A1 (en) Organic electroluminescent device and array substrate
CN107546248A (en) A kind of undoped white-light emitting layer series connection organic electroluminescence device
CN106992256A (en) A kind of white color organic electroluminescence device
CN101123298A (en) A structure-optimized white light organic EL part
CN108807710A (en) Undoped organic electroluminescence device and the preparation method of connecting with the complementary white light of doping
CN102169965B (en) An OLED device and a manufacturing method thereof
CN107302058A (en) A kind of undoped white-light emitting layer series connection organic electroluminescence device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination