CN107464832A - Organic electroluminescence display panel and preparation method, organic light-emitting display device - Google Patents
Organic electroluminescence display panel and preparation method, organic light-emitting display device Download PDFInfo
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- CN107464832A CN107464832A CN201710647121.9A CN201710647121A CN107464832A CN 107464832 A CN107464832 A CN 107464832A CN 201710647121 A CN201710647121 A CN 201710647121A CN 107464832 A CN107464832 A CN 107464832A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/121—Active-matrix OLED [AMOLED] displays characterised by the geometry or disposition of pixel elements
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- H—ELECTRICITY
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Abstract
This application discloses a kind of organic electroluminescence display panel and preparation method, organic light-emitting display device, the organic electroluminescence display panel includes：Pixel barriers barricade, organic electroluminescence display panel is separated out multiple pixel cells；First substrate, including substrate, planarization layer, planarization layer are provided with multiple grooves；First electrode, formed on planarization layer, and groove between the adjacent first electrode in same pixel cell be present, and the part surface of first electrode covering groove；Insulating barrier, the part not covered in part and groove that groove is covered in first electrode by first electrode is covered, wherein, the surface of insulating barrier is not higher than the surface not covered in first electrode by insulating barrier；The organic luminous layer being arranged in each pixel cell, cover in first electrode not by the part of insulating barrier covering and insulating barrier；Second electrode.The homogeneity of the thickness for the organic luminous layer being in contact with first electrode is thereby may be ensured that, improves the display quality of organic electroluminescence display panel.
Description
Technical field
Present application relates generally to display technology field, more particularly to organic light emitting display technical field, and in particular to organic
Light emitting display panel and preparation method include the organic light-emitting display device of the organic electroluminescence display panel.
Background technology
With the development of electronic technology, electronic product is throughout the life of people.Display Technique be in electronic technology extremely
An important technology is closed, is related to the display effect of electronic product.In display technology field, display device is divided into two classes：Have
Machine luminous display unit and liquid crystal display device.Existing organic light-emitting display device generally use increases picture element density to meet
Meet the high definition demand of user.
Generally, prior art can be by forming multiple pixels to increase the density of pixel, together in a pixel cell
Adjacent electrode in one pixel cell needs to be electrically insulated by the insulating barrier between adjacent electrode, and is located at phase
Insulating barrier between adjacent electrode is often or higher than electrode.When forming organic luminous layer on electrode using inkjet technology,
Insulating barrier between adjacent electrode can cause the ink droplet to be difficult to uniformly spread higher than electrode.Organic hair corresponding to Different electrodes
The thickness of photosphere is different, the display quality of the relatively low organic electroluminescence display panel of meeting.
The content of the invention
In view of drawbacks described above of the prior art, the embodiment of the present application provides a kind of organic electroluminescence display panel and its preparation
Method and the organic light-emitting display device including the organic electroluminescence display panel, mention solving background section above
Technical problem.
To achieve these goals, in a first aspect, the embodiment of the present application provides a kind of organic electroluminescence display panel, this has
Machine light emitting display panel includes：First substrate, and pixel barriers barricade on the first substrate is set, pixel barriers barricade will
Organic electroluminescence display panel is separated out multiple pixel cells；First substrate, including：Substrate, and set on a surface of the substrate
Planarization layer, planarization layer is provided with multiple grooves；The multiple first electrodes being arranged in each pixel cell, each first electrode
Formed on planarization layer, and groove between the adjacent first electrode in same pixel cell be present, and first electrode covers
The part surface of groove；The insulating barrier being arranged in groove, insulating barrier covers the part that groove is covered in first electrode, and insulate
The part not covered in layer covering groove by first electrode, wherein, the surface of insulating barrier, which is not higher than in first electrode, is not insulated
The surface of layer covering；The organic luminous layer being arranged in each pixel cell, organic luminous layer covers not to be insulated in first electrode
The part of layer covering and insulating barrier；Second electrode, second electrode covering organic luminous layer and pixel barriers barricade.
Second aspect, the embodiment of the present application additionally provide a kind of organic light-emitting display device and shown including above-mentioned organic light emission
Show panel.
The third aspect, the embodiment of the present application additionally provide a kind of preparation method of organic electroluminescence display panel, including：Prepare
First substrate, wherein, first substrate includes multiple pixel unit areas and positioned at the pixel barriers barricade area in adjacent pixel unit area；
Preparing first substrate includes：Smoothing material layer is covered on substrate, etches smoothing material layer, forms planarization layer, wherein,
Planarization layer includes multiple grooves；First electrode material layer is covered in planarization layer, etching is located at the bottom surface of each groove at least
Part first electrode material, forms multiple first electrodes, wherein, each pixel unit area includes at least two first electrodes, same
Groove be present between two adjacent first electrodes in one pixel unit area；Insulation material layer is covered in each first electrode, is carved
Insulation material layer is lost, exposes the first electrode outside groove, and exposes the planarization layer in pixel barriers barricade area, is formed
Insulating barrier, wherein, the surface of insulating barrier is not higher by the surface of the first electrode exposed；Formed and be used in pixel barriers barricade area
The pixel barriers barricade of partitioning pixel unit；Using inkjet technology organic luminous layer is formed in each pixel cell；Having
Machine luminescent layer and pixel barriers barricade covering second electrode.
The organic electroluminescence display panel that the embodiment of the present application provides, pixel barriers gear on the first substrate can be set
Wall is separated into multiple pixel cells, and first substrate can include substrate and the planarization layer being arranged on substrate, the planarization layer
Provided with multiple grooves, each pixel cell can include forming the first electrode on planarization layer, and in same pixel cell
Above-mentioned groove among adjacent first electrode be present, also, each first electrode covers the portion inner surface of the first groove, in groove
Insulating barrier is set, and the insulating barrier can cover in groove and not covered groove in the part of first electrode covering and first electrode
Part, and the surface of the insulating barrier is not higher than the surface not covered in first electrode by insulating barrier, and organic luminous layer is arranged on
In each pixel cell, and the part not covered in the first electrode in the pixel cell by insulating barrier and insulating barrier are covered, second
Electrode covers organic luminous layer and pixel barriers barricade, and the wherein surface of insulating barrier is not higher than in first electrode and do not covered by insulating barrier
The surface of lid can make it that the thickness of the organic luminous layer in different first electrodes in pixel cell is more uniform, improve organic
The display quality of light emitting display panel.
Brief description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Figure 1A shows the structural representation of the organic electroluminescence display panel according to the application；
Figure 1B shows the structural representation of the first substrate in organic electroluminescence display panel in Figure 1A；
Fig. 2 shows the flow chart of one embodiment of the preparation method of the organic electroluminescence display panel according to the application；
Fig. 3 shows first made using the preparation method of the application organic electroluminescence display panel during first substrate
Cross section structure schematic diagram；
Fig. 4 shows second made using the preparation method of the application organic electroluminescence display panel during first substrate
Cross section structure schematic diagram；
Fig. 5 shows the 3rd made using the preparation method of the application organic electroluminescence display panel during first substrate
Cross section structure schematic diagram；
Fig. 6 shows the 4th made using the preparation method of the application organic electroluminescence display panel during first substrate
Cross section structure schematic diagram；
Fig. 7 shows the 5th made using the preparation method of the application organic electroluminescence display panel during first substrate
Cross section structure schematic diagram；
Fig. 8 shows the structural representation of one embodiment of the organic light-emitting display device according to the application.
Embodiment
The principle and feature of the application are described in further detail with reference to the accompanying drawings and examples.It is appreciated that
It is that specific embodiment described herein is used only for explaining related invention, rather than the restriction to the invention.Further need exist for
It is bright, for the ease of description, the part related to invention is illustrate only in accompanying drawing.
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the application in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Figure 1A-Figure 1B is refer to, wherein, Figure 1A shows the structural representation of the organic electroluminescence display panel according to the application
Figure, Figure 1B show the structural representation of the first substrate in organic electroluminescence display panel in Figure 1A.As shown in Figure 1A, this implementation
The organic electroluminescence display panel 100 of example can include first substrate, and the multiple pixel barriers being arranged on first substrate 110
Organic electroluminescence display panel 100 can be separated out multiple pixel cells 130 by barricade 120, above-mentioned each pixel barriers barricade 120.
As shown in Figure 1B, the first substrate 110 in the present embodiment can include substrate 101, planarization layer 102, first electrode 103, absolutely
Edge layer 104, organic luminous layer 105 and second electrode 106.
In the present embodiment, above-mentioned planarization layer 102 can be arranged on a side surface of substrate 101, and the planarization
Multiple groove CH1 can be provided with layer 102, as shown in Figure 1B, and at least one groove be present in each pixel cell 130
CH1.Above-mentioned first substrate 110 can also include multiple first electrodes 103, and can be provided with each pixel cell 130
Two or more first electrodes 103.For example, in the first substrate 110 shown in Figure 1B, each pixel cell 130 can
To set two first electrodes 103.Each first electrode 103 can be formed on planarization layer 102, and in same pixel cell
In 130, groove CH1 be present between adjacent first electrode 103, as shown in Figure 1B, the first electrode 103 of groove CH1 both sides can
To extend in groove CH1 and be covered in groove CH1 portion inner surface.
In the present embodiment, above-mentioned first substrate 110 can also include insulating barrier 104, and the insulating barrier 104 can be located at recessed
In groove CH1, as shown in Figure 1B.Above-mentioned first substrate 110 can also include organic luminous layer 105, as shown in Figure 1B, organic hair
Photosphere 105 can be located in first electrode 103.Specifically, above-mentioned insulating barrier 104 can cover prolongs in above-mentioned first electrode 103
Groove CH1 part is extended, and the insulating barrier 104 can also cover the part table not covered in groove CH1 by first electrode 103
Face, as shown in Figure 1B.In addition, in another optional embodiment, first electrode 103 is just neat with groove CH1 edge
Flat, insulating barrier 104 is just filled in groove CH1 surfaces and edge is in contact with first electrode 103.Above-mentioned insulating barrier 104 can be with
Avoid the first electrode 103 positioned at groove CH1 both sides where it from electrically connecting, and the insulating barrier 104 is arranged on groove CH1
It is interior, while can make it that the first electrode 103 positioned at groove CH1 both sides is electrically insulated, avoid the surface of the insulating barrier 104 high
In the surface of first electrode 103.It is understood that if planarization layer 102 is not provided with groove CH1, now it is used for so that same
The insulating barrier 104 that each first electrode 103 in pixel cell 130 is electrically insulated can be arranged directly on planarization layer 102, should
The situation on the surface higher than first electrode 103 occurs in the surface of insulating barrier 104.And the surface of insulating barrier 104 is higher than not by it
The surface of the first electrode 103 covered, organic hair in the pixel cell 130 where the insulating barrier 104 can be resulted in
The uneven thickness one of photosphere 104, you can organic in different first electrodes 103 in same pixel cell 130 to cause
The thickness of luminescent layer 105 is different, and the thickness of organic luminous layer 105 can influence the luminous of pixel, show so as to influence organic light emission
Show the display effect of panel 100.In the present embodiment, the surface of insulating barrier 104 is not higher than in first electrode 103 and not insulated by this
The surface of the covering of layer 104, when such a structure can cause inkjet printing organic luminous layer, including the ink of luminescent material can fill
Shunting is dynamic so that the thickness of the organic luminous layer 105 after processing procedure in pixel cell 130 in each first electrode 103 compared with
It is homogeneous, it thereby may be ensured that the display quality of organic electroluminescence display panel.
In the present embodiment, organic luminous layer 105, and the organic luminous layer 105 can be provided with each pixel cell 130
The part not covered in first electrode 103 by insulating barrier 104 can be not only covered, the insulating barrier 104 can also be covered, such as Figure 1B
It is shown.Above-mentioned first substrate 110 can also include second electrode 106, and second electrode 106 can be covered positioned at each pixel list
Organic luminous layer 105 in member 130, and the pixel barriers barricade 120 between each pixel cell 130, as shown in Figure 1B.
It is understood that above-mentioned first electrode 103 and second electrode 106 can be respectively organic electroluminescence display panel
Anode and negative electrode in 100.Under external voltage driving, hole and electronics can be respectively from anodes and negative electrode injection organic light emission
Layer 105, hole and electronics is compound in organic luminous layer 105 gives off energy, so as to produce luminescence phenomenon.Work as first electrode
During the thickness difference of the organic luminous layer 105 between 103 and second electrode 106, light intensity caused by organic luminous layer 105 is different,
So as to influence the display quality of organic electroluminescence display panel 100.And the present embodiment by planarization layer 102 set groove CH1,
The insulating barrier 104 for controlling adjacent first electrode 103 to be electrically insulated is arranged in groove CH1, so as to avoid insulating barrier 104
Surface be higher than first electrode 103 surface, avoid being arranged on the organic luminous layer 105 on the surface of different first electrodes 103
Difference in thickness is larger, improves the display quality of organic electroluminescence display panel 100.
In some optional implementations of this implementation, the surface of above-mentioned insulating barrier 104 is less than in first electrode 103 not
The surface covered by the insulating barrier 104, now, in pixel cell 130, it is not only located at the organic light emission of the first pixel electrode 103
The thickness of layer 105 is identical.
In other optional implementations of this implementation, in the surface of above-mentioned insulating barrier 104 and first electrode 103 not
The surface covered by the insulating barrier 104 can be in the same plane.Now, in pixel cell 130, it is not only located at the first pixel
The thickness of the organic luminous layer 105 of electrode 103 can be with identical, the organic light emission on the insulating barrier 104 in the pixel cell 130
The thickness of layer 105 and the organic luminous layer 105 in first electrode 103 are also identical, organic so as to further improve
The display quality of light emitting display panel 100.
In some optional implementations of the present embodiment, above-mentioned organic electroluminescence display panel 100 can also include picture
Plain circuit (not shown), and the image element circuit can be arranged between planarization layer 102 and substrate 101, and the image element circuit can
For providing voltage signal for each first electrode 103.It can run through the planarization layer provided with multiple on above-mentioned planarization layer 102
102 layers of through hole CH2, there is at least one through hole CH2 and correspond to therewith in each first electrode 103, so that each first electrode
It can be electrically connected by through hole CH2 with corresponding image element circuit.
In some optional implementations of the present embodiment, above-mentioned groove CH1 depth and the thickness of planarization layer 102
Compared to smaller, therefore the edge of the first electrode 103 positioned at groove CH1 both sides extends to groove CH1 inner surface.Enter one
Step ground, groove CH1 side can be at least completely covered in the edge of adjacent with groove CH1 two first electrodes 103.It is above-mentioned
The width a of groove CH1 bottom surface in the first direction, and the first adjacent with groove CH1 in a first direction pixel electrode 103
The distance between b, a >=b can be met, then can make it that the edge of two first electrode 103 adjacent with groove CH1 is at least complete
All standing groove CH1 side, first direction here can be parallel with the surface of substrate 101, as shown in Figure 1B.
In some optional implementations of the present embodiment, above-mentioned groove CH1 side and groove CH1 bottom surface
Angle can be α, and the angle α can meet 120 ° of α ＞, and the angle can cause the surface of planarization layer 102 to groove CH1
Side transition region it is shallower, so as to avoid first electrode 103 because causing the first electrode 103 the transition region is relatively thin
In transition region easy fracture, the display effect of touch-control display panel 100 ensure that.Above-mentioned groove CH1, which is used to set, causes adjacent the
The insulating barrier 104 that one electrode 103 is electrically insulated, therefore groove CH1 need not run through planarization layer 102, and groove CH1 is only
The depth of needs need to be met.The depth c of above-mentioned groove CH1 in a second direction meet 100nm≤c≤300nm, can cause
First electrode 103 can be extended in groove CH1, and the insulating barrier 104 for being arranged on groove CH1 can cause adjacent
One electrode 103 is electrically insulated.
The organic electroluminescence display panel 100 that above-described embodiment of the application provides, multiple grooves are set in planarization layer 102
CH1, groove CH1 be present between adjacent first electrode 103 in same pixel cell 130, and each first electrode 103 can be covered
Lid groove CH1 part surface, insulating barrier 104 are arranged in groove CH1 so that and adjacent first electrode 103 is electrically insulated, and
And insulating barrier 104 is arranged on the surface that the surface of insulating barrier 104 can be avoided to be higher than first electrode 103 in groove CH1, so as to
It is larger to avoid being arranged on the difference in thickness of the organic luminous layer 105 on the surface of different first electrodes 103, improve organic light emission and show
Show the display quality of panel 100.
Referring next to Fig. 2, it illustrates the stream of the preparation method of the organic electroluminescence display panel according to the present embodiment
The figure of journey.Organic hair as shown in Figure 1A can be prepared using the preparation method 200 of the organic electroluminescence display panel of the present embodiment
Light display panel.Fig. 3-Fig. 7 is shown makes first substrate process using the preparation method of the application organic electroluminescence display panel
In cross section structure schematic diagram.Specifically, the preparation method 200 of the organic electroluminescence display panel of the present embodiment can be used for preparing
First substrate, the first substrate can with concrete structure can as shown in Figure 1B, the first substrate can include multiple pixel lists
First area and positioned at the pixel barriers barricade area in adjacent pixel unit area, following step can specifically be included by preparing the method for first substrate
Suddenly：
Step 201, smoothing material layer is covered on substrate, etches smoothing material layer, forms planarization layer.
In the present embodiment, it can be provided for preparing the substrate 101 of first substrate first, as shown in figure 3, the substrate
101 can be made up of glass substrate, quartz substrate or organic material etc..It can be covered afterwards in a side surface of the substrate 101
Smoothing material layer, then etch the smoothing material layer and form planarization layer 102.It should be noted that the planarization layer 102
Multiple groove CH1 are could be formed with, as shown in Figure 3.
, can be in substrate 101 before smoothing material layer is covered in some optional implementations of the present embodiment
Upper formation image element circuit, the pixel electrode can provide letter voltage signal for the first electrode in organic electroluminescence display panel.Enter
One step, development can be exposed to above-mentioned smoothing material layer using intermediate tone mask plate, then etch above-mentioned groove
CH1, while through hole CH2 is etched, through hole CH2 can be corresponding with above-mentioned image element circuit.In order to the first electrode of formation
It can be electrically connected by through hole CH2 with image element circuit.
Alternatively, the angle of above-mentioned groove CH1 side and groove CH1 bottom surface is α, and the angle can meet α
120 ° of ＞, and the depth of groove CH1 in a second direction is c, and c can meet 100nm≤c≤300nm, wherein, second party
To can be vertical with substrate 101.
It should be noted that the forming process of the planarization layer 102 in above-mentioned first substrate can include smoothing material
Film forming, coating photoresist, exposure, development, etching, a series of process such as stripping photoresist of layer.Because by coating photoresist,
The techniques such as stripping photoresist are the conventional meanses of this area, therefore the application is when describing first substrate manufacturing process, not to upper
The process of stating is specifically described.It will be understood by those skilled in the art that not describing correlated process is not intended to each embodiment not
In the presence of or omit correlation step.
Step 202, first electrode material layer, at least part the of etching positioned at the bottom surface of each groove are covered in planarization layer
One electrode material, form multiple first electrodes.
In the present embodiment, the planarization layer 102 formed based on step 201, can continue in the overlying of planarization layer 102
One layer of first electrode material layer of lid, and etch the electricity of at least part first for the groove CH1 bottom surfaces being located in each pixel cell
Pole material layer, so as to form multiple first electrodes 103 in each pixel cell, as shown in Figure 4.It should be noted that have
Multiple first electrodes 103 are could be formed with each pixel cell in machine light emitting display panel, as shown in figure 4, and same
There may be groove CH1 between adjacent first electrode 103 in pixel cell.
Alternatively, the width of above-mentioned groove CH1 bottom surface in the first direction can be a, as shown in Figure 4.Also, first
On direction, the distance between first electrode 103 adjacent with groove CH1 can be b, and above-mentioned width a and distance b can meet
A >=b, so that groove CH1 side can at least be completely covered positioned at the edge of the first electrode 103 of groove CH1 both sides.
Step 203, insulation material layer is covered in each institute's first electrode, etching insulating material layer, exposed positioned at groove
Outer first electrode, and the planarization layer in pixel barriers barricade area is exposed, form insulating barrier.
In the present embodiment, the first electrode 103 formed based on step 202, can continue in each overlying of first electrode 103
Lid insulation material layer, and using exposure imagings such as mask plates, etch the insulation material layer, expose the first electricity outside groove CH1
Pole 103, and the planarization layer positioned at pixel barriers barricade area is exposed, form insulating barrier 104 as shown in Figure 5.Need to illustrate
, in etching insulating layer 104, it is necessary to which so that the surface of the insulating barrier 104 etched is not higher than the first electrode exposed
103 surface, as shown in Figure 5.
Alternatively, the surface of above-mentioned insulating barrier 104 with the surface that is not covered in first electrode 103 by insulating barrier 104 same
In one plane.
Step 204, the pixel barriers barricade for partitioning pixel unit is formed in pixel barriers barricade area.
In the present embodiment, the insulating barrier 104 generated based on step 203, setting can be continuously formed on the first substrate
Pixel barriers barricade 120, and ensure that each pixel barriers barricade 120 can be located at pixel barriers barricade area, as shown in Figure 6.
Step 205, organic luminous layer is formed in each pixel cell using inkjet technology.
In the present embodiment, each pixel cell that the technology of inkjet printing can be used to be formed in pixel barriers barricade 120
Interior formation organic luminous layer 105, as shown in Figure 7.The organic luminous layer 105 can be covered in each first in each pixel cell
On electrode 103, and organic luminous layer can also be covered on insulating barrier 104.Also, due to forming groove on planarization layer 102
CH1, the insulating barrier 104 for alloing adjacent first electrode 103 to be electrically insulated are arranged in groove CH1, the insulating barrier 104
Surface can be not higher than the surface of first electrode 103 not covered in first electrode 103 by the insulating barrier 104, therefore in profit
When forming organic luminous layer 105 with inkjet technology, ink droplet can be caused uniformly to divide on the surface of different first electrodes 103
Dissipate, so that the thickness of the organic luminous layer 105 in each first electrode 103 is more uniform, improve the organic hair prepared
The display effect of light display panel.
Alternatively, when the surface not covered in the surface of above-mentioned insulating barrier 104 and first electrode 103 by the insulating barrier 104
When in the same plane, the surface smoothness of organic luminous layer 105 to be formed is high, so that being located at same pixel cell
The thickness of interior organic luminous layer 105 is homogeneous, further increasing the display effect for the organic electroluminescence display panel prepared.
Alternatively, the material for forming above-mentioned insulating barrier 104 is water wetted material.Organic hair is being formed using inkjet technology
During photosphere 105, insulating barrier 104 is that the ink droplet diffusion that water wetted material can to eject is more uniformly distributed, the organic light emission of formation
105 thickness of layer are also more uniformly distributed.Further, above-mentioned water wetted material can be hydrophilic electrodeless machine material, for example, hydrophilic electrodeless material
Material can be SiNx、SiO2、Al2O3At least one of.Above-mentioned water wetted material can also be hydrophilic organic materials.Here, for
The water wetted material for forming insulating barrier 104 does not limit uniquely.
Step 206, in organic luminous layer and pixel barriers barricade covering second electrode.
In the present embodiment, second electrode 106 is covered on the organic luminous layer 105 formed based on step 205, is formed as schemed
First substrate structure shown in 1B.Above-mentioned second electrode 106, which is not just coated with machine luminescent layer 105, can also cover pixel barriers gear
Wall 120, as shown in Figure 1B.It is understood that above-mentioned first electrode 103 and second electrode 106 can be respectively organic light emission
Anode and negative electrode in display panel 100.Under external voltage driving, hole and electronics are organic from anode and negative electrode injection respectively
Luminescent layer 105, hole and electronics are compound in having light emitting machine layer 105 to give off energy, so as to produce luminescence phenomenon.When the first electricity
During the thickness difference of the organic luminous layer 105 between pole 103 and second electrode 106, light intensity caused by organic luminous layer 105 is not
Together, the display quality of organic electroluminescence display panel 100 is further influenceed.And the present embodiment in planarization layer 102 by setting
Groove CH1, the insulating barrier 104 for controlling adjacent first electrode 103 to be electrically insulated is arranged in groove CH1, so as to avoid
The surface of insulating barrier 104 is higher than the surface of first electrode 103, avoids being arranged on organic hair on the surface of different first electrodes 103
The difference in thickness of photosphere 105 is larger, improves the display quality of organic electroluminescence display panel 100.
The preparation method for the organic electroluminescence display panel that above-described embodiment of the application provides, can be first in planarization layer
Groove CH1 is set on 102, and groove CH1, first electrode 103 between the adjacent first electrode 103 in each pixel cell be present
Edge extend in groove CH1, insulating barrier 104 is formed in groove CH1 afterwards, the insulating barrier 104 can cause phase
Adjacent first electrode 103 is electrically insulated, and the surface of the insulating barrier 104 is not higher than the surface of first electrode 103, then utilizes spray
Black printing technique forms organic luminous layer 105 on the surface of first electrode 103, and the surface of insulating barrier 104 is not higher than first
The surface of electrode 103 can in order to ejection ink droplet in diffusion thereon so that the organic luminous layer 105 of formation each first electricity
Thickness is more uniform on pole 103, eventually forms pixel barriers barricade 120 and second electrode 106, improves the organic light emission prepared
The display effect of display panel.
It is appreciated that the organic electroluminescence display panel in the application can also include thin film transistor (TFT), data wire, scan line
Etc. known features, for the core texture of not fuzzy the present embodiment, when describing the organic electroluminescence display panel of the present embodiment, omit
The description to these known features is gone.
Finally, the embodiment of the present application provides a kind of organic light-emitting display device 800, with including organic in above-described embodiment
Light emitting display panel.Here, as shown in figure 8, Fig. 8 shows a kind of organic light-emitting display device that the embodiment of the present application provides
Schematic diagram.Organic light-emitting display device 800 can be mobile phone as shown in Figure 8.It is organic in the organic light-emitting display device 800
The concrete structure and preparation method of light emitting display panel can be identical with organic electroluminescence display panel in above-described embodiment, here not
Repeat again.It will be appreciated by persons skilled in the art that above-mentioned organic light-emitting display device can also be to utilize organic light emission machine
The computer prepared, TV, wearable intelligent equipment etc. are managed, will not enumerate here.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the particular combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from the inventive concept, carried out by above-mentioned technical characteristic or its equivalent feature
The other technical schemes for being combined and being formed.Such as features described above has similar work(with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (10)
- A kind of 1. organic electroluminescence display panel, it is characterised in that including：First substrate, and set pixel barriers barricade on the first substrate, the pixel barriers barricade is by organic hair Light display panel is separated out multiple pixel cells；The first substrate, including：Substrate, and the planarization layer being arranged on the surface of the substrate, the planarization layer are provided with multiple grooves；The multiple first electrodes being arranged in each pixel cell, each first electrode are formed on the planarization layer, And the groove between the adjacent first electrode in same pixel cell be present, and first electrode covering is described recessed The part surface of groove；The insulating barrier being arranged in the groove, the insulating barrier cover the part that the groove is covered in the first electrode, And the insulating barrier covers the part not covered in the groove by the first electrode, wherein, the surface of the insulating barrier is not Higher than the surface not covered in the first electrode by the insulating barrier；The organic luminous layer being arranged in each pixel cell, the organic luminous layer are covered in the first electrode not by institute State the part of insulating barrier covering and the insulating barrier；Second electrode, the second electrode cover the organic luminous layer and the pixel barriers barricade.
- 2. organic electroluminescence display panel according to claim 1, it is characterised in that the surface of the insulating barrier and described the The surface not covered in one electrode by the insulating barrier is in the same plane.
- 3. organic electroluminescence display panel according to claim 1, it is characterised in that also include：Image element circuit over the substrate is formed, the planarization layer covers the image element circuit；The planarization layer is provided with through hole corresponding with each first electrode, and the through hole runs through the planarization layer；The first electrode is electrically connected by the corresponding through hole with the image element circuit.
- 4. organic electroluminescence display panel according to claim 1, it is characterised in that the bottom surface of the groove is in the first direction Width be a, wherein, the first direction is parallel with the surface of the substrate；In said first direction, the distance between described first electrode adjacent with groove this described is b, and a and b meet a ≥b。
- 5. organic electroluminescence display panel according to claim 4, it is characterised in that the side of the groove with it is recessed this described The angle of the bottom surface of groove is α, and meets 120 ° of α ＞；Depth of the groove along the second direction is c, and meets 100nm≤c≤300nm, wherein, the second direction with The substrate transverse.
- 6. a kind of organic light-emitting display device, it is characterised in that including the organic light emitting display as described in one of claim 1-5 Panel.
- A kind of 7. preparation method of organic electroluminescence display panel, it is characterised in that including：First substrate is prepared, wherein, the first substrate includes multiple pixel unit areas and positioned at the adjacent pixel unit area Pixel barriers barricade area；The first substrate for preparing includes：Smoothing material layer is covered on substrate, etches the smoothing material layer, forms planarization layer, wherein, it is described flat Changing layer includes multiple grooves；First electrode material layer, at least part first electricity of the etching positioned at the bottom surface of each groove are covered in the planarization layer Pole material, multiple first electrodes are formed, wherein, each pixel unit area includes at least two first electrodes, same described The groove be present between two adjacent first electrodes in pixel unit area；Insulation material layer is covered in each first electrode, etches the insulation material layer, is exposed outside the groove First electrode, and expose the planarization layer in the pixel barriers barricade area, form the insulating barrier, wherein, the insulation The surface of layer is not higher by the surface of the first electrode exposed；The pixel barriers barricade for separating the pixel cell is formed in the pixel barriers barricade area；Using inkjet technology organic luminous layer is formed in each pixel cell；In the organic luminous layer and pixel barriers barricade covering second electrode.
- 8. according to the method for claim 7, it is characterised in that the organic electroluminescence display panel also includes being formed described Image element circuit on substrate；The etching smoothing material layer, forms planarization layer, including：Multiple grooves and multiple through holes are etched in the smoothing material layer using intermediate tone mask plate, wherein, each through hole Through smoothing material layer this described, and the through hole is corresponding with each first electrode, and each first electrode passes through correspondingly The through hole electrically connected with the image element circuit.
- 9. according to the method for claim 7, it is characterised in that the insulating materials for forming the insulating barrier is water wetted material.
- 10. according to the method for claim 9, it is characterised in that the water wetted material includes hydrophilic organic materials and hydrophilic Inorganic material.
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