CN108336114A - A kind of OLED luminescent devices and OLED display screen - Google Patents
A kind of OLED luminescent devices and OLED display screen Download PDFInfo
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- CN108336114A CN108336114A CN201810098236.1A CN201810098236A CN108336114A CN 108336114 A CN108336114 A CN 108336114A CN 201810098236 A CN201810098236 A CN 201810098236A CN 108336114 A CN108336114 A CN 108336114A
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- H—ELECTRICITY
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- H10K50/00—Organic light-emitting devices
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- H—ELECTRICITY
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- H—ELECTRICITY
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- 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
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Abstract
This application discloses a kind of OLED luminescent devices and OLED display screen, the OLED luminescent devices include：Organic luminous layer, first electrode layer, changeable refractive index layer and the second electrode lay being stacked, wherein first electrode layer, changeable refractive index layer and the second electrode lay are arranged in the same side of the organic luminous layer；The refractive index of the changeable refractive index layer can be between the first electrode layer and the second electrode lay voltage difference under the action of change.Due to the refractive index of changeable refractive index layer can be between the first electrode layer and the second electrode lay voltage difference under the action of change, therefore, it can be by adjusting being applied to the voltage of changeable refractive index layer both sides, achieve the purpose that the wavelength for adjusting the emergent light that OLED luminescent devices are sent out, this makes the color controllable for the light that OLED luminescent devices send out, and then consistent and uniform when display screen difference display area can be made to show same color, improve the display effect of display screen.
Description
Technical field
The invention relates to display screen manufacturing technology fields more particularly to a kind of OLED luminescent devices and OLED to show
Screen.
Background technology
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) luminescent device, because with spontaneous
It the advantages that light, high contrast and low power consumption, is widely used in the manufacture of display screen.According to light Exit positions not
Together, OLED luminescent devices can be divided into two kinds：Bottom emitting type (BOLED) and top emission type (TOLED).
For TOLED, since light is emitted from the top of luminescent device, the color of emergent light is not by luminescent device sheet
The influence of body thickness has high aperture opening ratio, display effect good.However, for BOLED, due to thick by luminescent device itself
The influence of degree, there are microcavity effects, cause the color of emergent light that can change with the change at visual angle, there are dependence of angle,
This can have an adverse effect to display effect.And with the increase of screen size, the dependence of angle of the color of emergent light
Adverse effect bigger stronger, that display effect is generated.
For example, as shown in Figure 1, for OLED fixation camber display screens, (sight of user is non-curved with display screen under positive visual angle
The light ray parallel that bent field emission goes out), because there is bending region, 11 He of top edge in the top edge 11 of display screen and lower edge 12
Lower edge 12 becomes big field of view with being difficult to avoid that.Along with the presence of microcavity effect, the top edges big visual angle Hui Shi 11 are under
The wavelength of the emergent light at edge 12 is moved to shortwave direction, reality when top edge 11 and lower edge 12 being caused to be displayed in white picture
Display color is partially blue, blue-shifted phenomenon occurs.It is conceivable that when flexible display screen is bent, there is also same problems in bending region.
As it can be seen that bottom emitting type OLED display screen, when showing picture, the color that display screen bending region is shown is relative to non-
Colour cast can occur for the color that bending region is shown, uneven, display is shown when display screen different zones being caused to show same color
Effect is poor.
Invention content
A kind of OLED luminescent devices of the embodiment of the present application offer and OLED display screen, it is aobvious to solve existing display screen difference
Show and shows uneven, the problem of display effect difference when region shows same color.
In a first aspect, the embodiment of the present application provides a kind of OLED luminescent devices, including：The organic luminous layer that is stacked,
First electrode layer, changeable refractive index layer and the second electrode lay, wherein
The first electrode layer, the changeable refractive index layer and the second electrode lay are arranged in the organic luminous layer
The same side；
The refractive index of the changeable refractive index layer can be between the first electrode layer and the second electrode lay voltage
It changes under the action of difference.
Optionally, the changeable refractive index layer is arranged between the first electrode layer and the second electrode lay.
Optionally, the first electrode layer is positioned close to the position of the organic luminous layer, and the second electrode lay is set
It sets in the position far from the organic luminous layer.
Optionally, the variation range of the refractive index of the changeable refractive index layer is between 1.0~2.0.
Optionally, the thickness of the changeable refractive index layer is between 10 μm~1000 μm.
Optionally, the changeable refractive index layer is made of electrooptical material；
The electrooptical material includes one or more in llowing group of materials：Electro-optic ceramic material, electro-optical organic material and electricity
Luminescent crystal.
Optionally, the electro-optical organic material includes：Atmosphere potassium dihydrogen phosphate and/or phosphoric acid dihydro amine.
Second aspect, the embodiment of the present application provide a kind of OLED display screen, including：OLED as described in relation to the first aspect shines
Device.
Optionally, the OLED display screen is fixed camber display screen, and the fixed camber display screen includes bending region
With un-flexed region, the OLED luminescent devices for including the changeable refractive index layer are correspondingly arranged at the bending region.
Optionally, the OLED display screen is flexible display screen, includes the OLED hairs of the changeable refractive index layer
Optical device is correspondingly arranged at least one pixel unit of the flexible display screen.
OLED luminescent devices provided by the embodiments of the present application and OLED display screen, since the refractive index of changeable refractive index layer can
It changes under the action of voltage difference between the first electrode layer and the second electrode lay, it therefore, can be by adjusting
It is applied to the voltage of changeable refractive index layer both sides, achievees the purpose that the wavelength for adjusting the emergent light that OLED luminescent devices are sent out, this
So that the color controllable for the light that OLED luminescent devices are sent out, final so that the face shown using the display screen of the OLED luminescent devices
Color is also controllable, solves the problems, such as to show non-uniform when existing display screen difference display area shows same color, improve
The display effect of display screen.
Description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please do not constitute the improper restriction to the application for explaining the application.In the accompanying drawings：
Fig. 1 is the main structure diagram of OLED camber display screens in the prior art；
Fig. 2A is a kind of structural schematic diagram of specific implementation mode of OLED luminescent devices provided by the embodiments of the present application；
Fig. 2 B are the principle schematic that electrooptical material can change refractive index；
Fig. 3 is the structural schematic diagram of fixed camber display screen provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram of flexible display screen provided by the embodiments of the present application.
Specific implementation mode
To keep the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out the every other embodiment obtained under the premise of creative work, shall fall in the protection scope of this application.
It is uneven in order to solve to show when existing display screen difference display area shows same color, display effect difference
Problem, the embodiment of the present application provide a kind of OLED luminescent devices and a kind of OLED display screen, are specifically described below.
A kind of OLED luminescent devices provided by the embodiments of the present application, including：The organic luminous layer that is stacked, first electrode
Layer, changeable refractive index layer and the second electrode lay.
Wherein, the first electrode layer, the changeable refractive index layer and the second electrode lay are arranged in organic hair
The same side of photosphere；Also, the refractive index of the changeable refractive index layer can be in the first electrode layer and the second electrode lay
Between voltage difference under the action of change.
In specific implementation, changeable refractive index layer setting the first electrode layer and the second electrode lay it
Between.Certainly, the first electrode layer and the second electrode lay can also be arranged in the same side of changeable refractive index layer.It can manage
Solution, when changeable refractive index layer is arranged between the first electrode layer and the second electrode lay, due to first electrode layer and
Therefore the second electrode lay can be removed from first electrode layer and changeable refractive index with two side contacts of changeable refractive index layer respectively
The trouble of additional lead is set between layer, and can remove from and be arranged additionally between the second electrode lay and changeable refractive index layer
Lead trouble, this simplifies the manufacturing process of OLED luminescent devices provided by the embodiments of the present application, reduce manufacturing cost.
In general, when light is emitted from microcavity, the wavelength of emergent light meets following formula：
K λ=nL (θ)
Wherein, λ is the wavelength of emergent light, and n indicates that the mean refractive index of medium in microcavity, L are the thickness of microcavity, and K is to be
Number, θ is visual angle.
It is envisioned that in the present embodiment, changeable refractive index layer itself can be understood as a microcavity.
Due to the refractive index of changeable refractive index layer can be between the second electrode lay and the first electrode layer voltage
It changes under the action of difference, therefore, the n values in above-mentioned formula can be adjusted by being added in the voltage of changeable refractive index layer both sides
It is whole, to achieve the purpose that adjust the wavelength X of emergent light.In view of the Wavelength tunable section of emergent light so that OLED luminescent devices are sent out
The color of the light gone out also becomes controllable, and the final color that the display screen using the OLED luminescent devices is shown is also controllable, solution
Existing display screen difference of having determined display area shows non-uniform problem when showing same color, improves the display of display screen
Effect.
A kind of OLED display screen provided by the embodiments of the present application, including：A kind of OLED provided by the embodiments of the present application shines
Device.
In a specific embodiment, above-mentioned OLED display screen is fixed camber display screen, the fixation camber display screen
May include：It is bent region and un-flexed region, at this point, the OLED luminescent devices for including the changeable refractive index layer can be right
It should be arranged in the bending region.
According to the analysis of the application background technology it is found that for fixed camber display screen, caused by microcavity effect
Colour cast problem is primarily present in bending region, therefore, is only correspondingly arranged in bending region and provided by the embodiments of the present application includes
The OLED luminescent devices of changeable refractive index layer can save the material for preparing changeable refractive index layer, reduce manufacturing cost.
In another embodiment specific implementation mode, above-mentioned OLED display screen is flexible display screen, at this point, including the refraction
The OLED luminescent devices of rate variable layer are correspondingly arranged at least one pixel unit of the flexible display screen.It can manage
Solution, each pixel unit is mutual indepedent, thus can be applied to the corresponding refractive index of each pixel unit by being changed independently
The voltage of variable layer both sides, to realize the independent control of the color of the light sent out to each pixel unit.
Due to the bending region of flexible display screen in practical applications be according to actual conditions real-time change, can
Independent control luminescent color is set to be directed to each pixel unit, and then can be according to actual needs only to occurring on flexible display screen
The display color in the bending region of colour cast is adjusted, and is uniformly shown when so that each region of flexible display screen is shown same color to reach
The purpose shown improves display effect.
Below in conjunction with the accompanying drawings, the technical solution that each embodiment of the application provides is described in detail.
Please refer to Fig.2 A, a kind of OLED luminescent devices provided by the embodiments of the present application, including：The organic light emission being stacked
Layer 22, first electrode layer 23, changeable refractive index layer 24 and the second electrode lay 25.
In fig. 2, first electrode layer 23, changeable refractive index layer 24 and the second electrode lay 25 are arranged in organic luminous layer 22
The same side, also, changeable refractive index layer 24 be arranged between first electrode layer 23 and the second electrode lay 25, meanwhile, first electricity
Pole layer 23 is positioned close to the position of organic luminous layer 22, and the second electrode lay 25 is arranged far from the position of organic luminous layer 22.
What is more important, the voltage difference that the refractive index of changeable refractive index layer 24 can be between first electrode layer 23 and the second electrode lay 25
Under the action of change.
It is appreciated that when first electrode layer 23 is positioned close to the position of organic luminous layer 22, the second electrode lay 25 is arranged
At the position far from organic luminous layer 22, first electrode layer 23 can also serve as the cathode or anode of organic luminous layer 22, in this way
The structure that OLED device provided by the embodiments of the present application can be simplified, further decreases manufacturing cost.
Since electrooptical material has electrooptic effect, above-mentioned changeable refractive index layer 24 can be prepared by electrooptical material
It arrives.So-called electrooptic effect refers to, under the action of extra electric field, the phenomenon that refractive index of material can change.
Specifically, the electrooptical material for preparing above-mentioned changeable refractive index layer 24 includes one or more in llowing group of materials：
Electro-optic ceramic material, electro-optical organic material and electro-optic crystal.Wherein, electro-optic ceramic material may include：Lead magnesio-niobate (PMN) and
Lead titanates (PT) etc.；Electro-optical organic material may include：Atmosphere potassium dihydrogen phosphate (DKDP) and/or phosphoric acid dihydro amine (ADP) etc.；
Electro-optic crystal may include：Lithium columbate crystal (LN) and button acid crystalline lithium (LT) etc..Since above-mentioned electrooptical material is relatively conventional,
And the refractive index of above-mentioned electrooptical material is easily controllable, therefore, in practical applications, can preferentially be selected from above-mentioned electrooptical material
The material for making changeable refractive index layer 24 improves non-uniform effect when the display same color of display screen difference display area to improve
Fruit.
Below by taking electro-optic crystal as an example, the electrooptic effect of electrooptical material is illustrated with reference to figure 2B.
As shown in Figure 2 B, incident beam 31 passes through the polarizer 32 after the polarization in the directions x, into electro-optic crystal 33, electricity
The both sides up and down of luminescent crystal 33 are separately connected the both ends of voltage source 34, the electricity that the refractive index of electro-optic crystal 33 applies in voltage source 34
It changes under the action of, the light beam after the refraction of electro-optic crystal 33 obtains wavelength after polarization of the analyzer 35 in the directions y
The outgoing beam 36 to change.
It should be noted that in fig. 2b, the polarizer 32 and analyzer 35 for changing incident beam polarization direction, it is right
The influence of the refractive index of incident beam 31 can be ignored.
In the schematic diagram shown in Fig. 2 B, the pass of the refractive index of electro-optic crystal 33 and the electric field being applied on electro-optic crystal 33
System is as follows：
N=n0+aE+bE2
Wherein, n is that electro-optic crystal 33 applies the mean refractive index after electric field；n0For the initial refractive rate of electro-optic crystal 33,
Namely refractive index when not applying electric field on electro-optic crystal 33 or when the electric field strength of application is 0；A and b is constant, and E is to apply
The electric field strength being added on electro-optic crystal 33.Under normal conditions, in above-mentioned relation, the refractive index of electro-optic crystal 33 caused by aE
Variation be known as level-one electrooptic effect, by bE2The variation of the refractive index of caused electro-optic crystal 33 is known as two level electrooptic effect.
More specifically, level-one electrooptic effect is：Two level electrooptic effect is：bE2=K λ E2,
In, rcFor coefficient, λ is the wavelength of outgoing beam 36, and L is thickness of the electro-optic crystal 33 in the incident direction of incident beam 31, K
For coefficient.
According to the explanation of the electrooptic effect of above-mentioned electro-optic crystal it is found that in the embodiment of the present application, passing through first electrode layer
23 and the second electrode lay 25 changeable refractive index layer 24 both sides apply voltage, thus it is possible to vary the refraction of changeable refractive index layer 24
Rate, and then the wavelength for the light that OLED display device is sent out can be changed, reach improvement colour cast, keeps each display area of display screen aobvious
Uniform purpose is shown when showing same color.
Corresponding to above-mentioned OLED luminescent devices, the embodiment of the present application also provides a kind of OLED display screens, which can
To include：A kind of OLED luminescent devices that the application any embodiment provides.
Also, optionally, the display screen is flexible display screen or fixed camber display screen.
It is appreciated that due to including that the embodiment of the present application provides in a kind of OLED display screen provided by the embodiments of the present application
A kind of OLED luminescent devices, accordingly it is also possible to obtain solid colour when display screen difference display area shows same color, aobvious
Show the advantageous effect having good uniformity.It is described in detail below in conjunction with the accompanying drawings.
Referring to FIG. 3, in one embodiment of the application, a kind of OLED display screen provided by the embodiments of the present application is solid
Determine camber display screen 4, which includes the first bending region 41, the bending region of un-flexed region 42 and second
43, the first bending region 41 and second is bent the edge that region 43 is located at the fixation camber display screen 4.
In OLED display screen shown in Fig. 3, the OLED luminescent devices in the first bending region 41, which are arranged, includes：It is stacked
Organic luminous layer 22, first electrode layer 23, first refractive index variable layer 241 and the first sub-electrode layer 251.Setting is curved second
The OLED luminescent devices in bent region 42 include：Organic luminous layer 22, first electrode layer 23, the second changeable refractive index being stacked
Layer 242 and second sub electrode layer 252.
Specifically, in the embodiment shown in fig. 3, first refractive index variable layer 241 and the second changeable refractive index layer 242
The one side for deviating from organic luminous layer 22 in the first electrode layer 23 can be set；First sub-electrode layer 251 can be arranged
Deviate from the one side of first electrode layer 23 on the first refractive index variable layer 241；Second sub electrode layer 252 can be arranged in institute
State the one side for deviating from first electrode layer 23 on the second changeable refractive index layer 242.That is, the setting of first refractive index variable layer 241 exists
Between first electrode layer 23 and the first sub-electrode layer 251, the second changeable refractive index layer 242 is arranged in first electrode layer 23 and second
Between sub-electrode layer 252, meanwhile, first electrode layer 23 is positioned close to the position of organic luminous layer 22, the first sub-electrode layer 251
The position of organic luminous layer 22 is arranged far from second sub electrode layer 252.What is more important, first refractive index variable layer
241 refractive index can change under the action of the voltage difference between the first sub-electrode layer 251 and first electrode layer 23, the
The refractive index of two refractive index variable layers 242 can be between second sub electrode layer 252 and first electrode layer 23 voltage difference work
It changes under.
In this way, the refractive index due to first refractive index variable layer 241 can be in the first sub-electrode layer 251 and first electrode layer 23
Between voltage difference under the action of change, the refractive index of the second changeable refractive index layer 242 can be in 252 He of second sub electrode layer
It changes under the action of voltage difference between first electrode layer 23.It therefore, can be by being applied to first refractive index variable layer
241 and the voltage of 242 both sides of the second changeable refractive index layer be adjusted, reach the first bending of the fixed camber display screen of adjustment 4
Region 41 and second is bent the purpose of the wavelength X of the emergent light in region 43, changes the first bending region 41 and second and is bent region
The color of 43 emergent light, finally so that the bending region and un-flexed region of the fixation camber display screen 4 show same color
When uniformity, improve the display effect of display screen.
Optionally, in the present embodiment, in fact, first refractive index variable layer 241 and the second changeable refractive index layer 242
Thickness, which is equivalent to, constitutes another microcavity, what the microcavity constituted with the bending region itself to fixed camber display screen 4 generated
Microcavity effect is corrected, and therefore, the thickness of first refractive index variable layer 241 and the second changeable refractive index layer 242 can basis
The thickness in the bending region of camber display screen 4 itself is fixed to determine, is usually changed between 10 μm~1000 μm.And it can be with
The first folding is prepared on one side away from organic luminous layer 22 in the first electrode layer 23 by way of vapor deposition or spin coating
Penetrate rate variable layer 241 and the second changeable refractive index layer 242.
Optionally, in the present embodiment, it is generated due to the microcavity that the bending region of fixed camber display screen 4 itself is constituted
Usually not more than one times of the wavelength change of emergent light caused by microcavity effect, therefore, first refractive index variable layer 241 and second
The variation range of the refractive index of changeable refractive index layer 242 can be arranged between 1.0~2.0, can make in this way to first refractive
The voltage that rate variable layer 241 and the second changeable refractive index layer 242 provide need not be excessive, and then can reduce fixed camber display screen
4 energy consumption.
Optionally, as shown in figure 3, a kind of OLED display screen provided by the embodiments of the present application, OLED luminescent devices therein
Can also include：Substrate 20, third electrode layer 21 and encapsulated layer 26.Wherein, third electrode layer 21 is arranged in organic luminous layer 22
The upper one side away from first electrode layer 23, the one side away from organic luminous layer 22 is arranged on third electrode layer 21 in substrate 20 (can
To be interpreted as the bottom that substrate 20 is located at OLED luminescent devices), the setting of encapsulated layer 26 deviates from the second electrode lay 25
The one side of first refractive index variable layer 241 and the second changeable refractive index layer 242 (can be understood as encapsulated layer 26 to shine positioned at OLED
The top of device).
Wherein, substrate 20 can be made of materials such as polyimides (PET), organic glass, quartz glass.
Optionally, in the present embodiment, due to first refractive index variable layer 241, the second changeable refractive index layer 242, first
Sub-electrode layer 251 and second sub electrode layer 252 are provided only on the bending region of fixed camber display screen 4, therefore, entire in order to make
Fixed camber display screen 4 planarizes, and has display effect evenly, can also be in the first refractive index in un-flexed region 4
Between variable layer 241, the second changeable refractive index layer 242 and the first sub-electrode layer 251 and second sub electrode layer 252 are set respectively
Set transparent the first filled layer 243 and the second filled layer 253.
Wherein, the first filled layer 243 and the second filled layer 253 can by with mobility, transparent acrylic glue or
Optical cement filling air dry cure obtains, or is prepared by other transparent organic materials, such as polyimides (PET) etc.,
The present invention does not limit this.
Referring to FIG. 4, in another embodiment of the application, a kind of OLED display screen provided by the embodiments of the present application can
Think flexible display screen 5, which includes several pixel units 51 of array distribution, includes above-mentioned refractive index
The OLED luminescent devices of variable layer 24 are correspondingly arranged at least one pixel unit of flexible display screen 5.It is appreciated that
Since different pixel units is mutual indepedent, thus 51 corresponding folding of each pixel unit can be applied to by being changed independently
The voltage of 24 both sides of rate variable layer is penetrated, the independent control of the final color for realizing the light sent out to each pixel unit 51.
It should be noted that in the embodiment shown in fig. 4, it can in a 51 corresponding organic luminous layer 22 of pixel unit
To include three R (feux rouges), G (green light), B (blue light) dot structures, wherein organic luminous layer in R dot structures can be by
The luminous organic material that red light can be generated is made, and the organic luminous layer in G dot structures can be by that can generate green
The luminous organic material of light is made, and the organic luminous layer in B dot structures can be by that can generate organic hair of blue ray
Luminescent material is made.
Optionally, in the present embodiment, in fact, changeable refractive index layer 24, which is equivalent to, constitutes another microcavity, with right
The microcavity effect that the microcavity of flexible display screen 5 itself constituted generates is corrected, and therefore, the thickness of changeable refractive index layer 24 can
To be determined according to the thickness of of flexible display screen 5 itself, can usually change between 10 μm~1000 μm.And it can pass through
Vapor deposition or the mode of spin coating prepare the one side for deviating from organic luminous layer 22 in the first electrode layer 23.
Optionally, in the present embodiment, caused by the microcavity effect generated due to the microcavity that flexible display screen 5 itself is constituted
Usually not more than one times of the wavelength change of emergent light, therefore, the variation range of the refractive index of changeable refractive index layer 24 can be set
It sets between 1.0~2.0, can make the voltage provided to changeable refractive index layer 24 need not be excessive in this way, and then can reduce soft
The energy consumption of property display screen 5.
Optionally, as shown in figure 4, OLED luminescent devices in a kind of OLED display screen provided by the embodiments of the present application, also
May include：Substrate 20, third electrode layer 21 and encapsulated layer 26.Wherein, third electrode layer 21 is arranged on organic luminous layer 22
Away from the one side of first electrode layer 23, the one side away from organic luminous layer 22, encapsulation is arranged on third electrode layer 21 in substrate 20
The one side away from changeable refractive index layer 24 is arranged on the second electrode lay 25 in layer 26.
Wherein, substrate 20 can be made of materials such as polyimides (PET), organic glass, quartz glass.
A kind of OLED display screen that the application Fig. 3 and embodiment shown in Fig. 4 provide, due to wherein including the application reality
A kind of OLED luminescent devices of example offer are applied, accordingly it is also possible to obtain face when display screen difference display area shows same color
Color is consistent, the good advantageous effect of show uniformity.
It should be noted that the terms "include", "comprise" or its any other variant are intended to the packet of nonexcludability
Contain, so that process, method, commodity or equipment including a series of elements include not only those elements, but also includes
Other elements that are not explicitly listed, or further include for this process, method, commodity or the intrinsic element of equipment.
In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including the element
Process, method, there is also other identical elements in commodity or equipment.
Above is only an example of the present application, it is not intended to limit this application.For those skilled in the art
For, the application can have various modifications and variations.It is all within spirit herein and principle made by any modification, equivalent
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (10)
1. a kind of OLED luminescent devices, which is characterized in that including：The organic luminous layer (22) that is stacked, first electrode layer
(23), changeable refractive index layer (24) and the second electrode lay (25), wherein
The first electrode layer (23), the changeable refractive index layer (24) and the second electrode lay (25) are arranged described organic
The same side of luminescent layer (22)；
The refractive index of the changeable refractive index layer (24) can the first electrode layer (23) and the second electrode lay (25) it
Between voltage difference under the action of change.
2. OLED luminescent devices according to claim 1, which is characterized in that
The changeable refractive index layer (24) is arranged between the first electrode layer (23) and the second electrode lay (25).
3. OLED luminescent devices according to claim 2, which is characterized in that
The first electrode layer (23) is positioned close to the position of the organic luminous layer (22), and the second electrode lay (25) sets
It sets in the position far from the organic luminous layer (22).
4. OLED luminescent devices according to claim 1, which is characterized in that
The variation range of the refractive index of the changeable refractive index layer (24) is between 1.0~2.0.
5. according to claim 1-4 any one of them OLED luminescent devices, which is characterized in that
The thickness of the changeable refractive index layer (24) is between 10 μm~1000 μm.
6. according to claim 1-4 any one of them OLED luminescent devices, which is characterized in that
The changeable refractive index layer (24) is made of electrooptical material；
The electrooptical material includes one or more in llowing group of materials：Electro-optic ceramic material, electro-optical organic material and electric light are brilliant
Body.
7. OLED luminescent devices according to claim 6, which is characterized in that
The electro-optical organic material includes：Atmosphere potassium dihydrogen phosphate and/or phosphoric acid dihydro amine.
8. a kind of OLED display screen, which is characterized in that including：Such as claim 1-7 any one of them OLED luminescent devices.
9. OLED display screen according to claim 8, which is characterized in that
The OLED display screen is fixed camber display screen, and the fixed camber display screen includes bending region and un-flexed area
Domain, the OLED luminescent devices for including the changeable refractive index layer (24) are correspondingly arranged at the bending region.
10. OLED display screen according to claim 8, which is characterized in that
The OLED display screen is flexible display screen, includes the OLED luminescent devices pair of the changeable refractive index layer (24)
It should be arranged at least one pixel unit of the flexible display screen.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810098236.1A CN108336114B (en) | 2018-01-31 | 2018-01-31 | OLED light-emitting device and OLED display screen |
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| CN201810098236.1A CN108336114B (en) | 2018-01-31 | 2018-01-31 | OLED light-emitting device and OLED display screen |
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| CN108336114B CN108336114B (en) | 2020-11-03 |
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| CN (1) | CN108336114B (en) |
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| CN111863914A (en) * | 2020-07-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Display panel and display device |
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