CN104282729B - A kind of organic electroluminescence display panel and preparation method thereof, display device - Google Patents
A kind of organic electroluminescence display panel and preparation method thereof, display device Download PDFInfo
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Abstract
The embodiments of the invention provide a kind of organic electroluminescence display panel and preparation method thereof, display device, it is related to electroluminance display technical field, the luminous organic material that can solve pixel defining layer edge liquid in organic electroluminescence display panel easily outwards flows, cause device overall performance decline the problem of.The organic electroluminescence display panel includes：Pixel defining layer positioned at the viewing area of the organic electroluminescence display panel, the pixel defining layer has multiple openings, described to be open for setting organic light emitting functional layer；The organic electroluminescence display panel is also included around the barrier layer of the pixel defining layer；Wherein, the pixel defining layer has identical hydrophilic and hydrophobic with the organic luminescence function layer, and the barrier layer has opposite hydrophilic and hydrophobic with the organic luminescence function layer.Preparation for organic electroluminescence display panel.
Description
Technical field
The present invention relates to electroluminance display technical field, more particularly to a kind of organic electroluminescence display panel and its preparation side
Method, display device.
Background technology
Organic electroluminescence display device and method of manufacturing same (Organic Light-Emitting Device, abbreviation OLED) is relative to liquid
Crystal device (Liquid Crystal Display, abbreviation LCD) has self-luminous, reaction is fast, visual angle is wide, brightness is high, color
The advantages that color gorgeous, frivolous, it is considered to be main flow Display Technique of future generation.
As shown in figure 1, the primary structure of OLED display is OLED, including substrate 10, anode electrode layer 11, have
Machine light emitting functional layer 30, negative electrode layer 12.Wherein, organic luminescence function layer 30 is the core texture of OLED, mainly by
Hole injection layer 31, hole transmission layer 32, luminescent layer 33, electron transfer layer 34 and electron injecting layer 35 are formed；Anode electrode
Layer 11 is usually located at the lower section of organic luminescence function layer 30, it is of course also possible to be that negative electrode layer 12 is located at organic luminescence function
The lower section of layer 30.
Organic luminescence function layer is prepared using vapour deposition method compared to traditional, using the organic luminescence function of solwution method preparation
Layer is more preferable to the covering property of anode electrode layer/negative electrode layer, and the leakage current for the OLED prepared is smaller, and using molten
Liquid method is easy to the whole face coating of substrate, can improve the production efficiency of OLED；Therefore, it is main at present using as inkjet printing,
The static discharge coating solwution method such as (ESC) and slot coated (Slit coating) prepares organic light emitting material.
As shown in Figure 2 A and 2 B, when preparing organic luminescence function layer using solwution method, in order to which each sub- picture will be corresponded to
The luminescent material of plain unit is isolated from each other, formed with anode electrode layer 11 (not illustrated in Fig. 2A) or negative electrode layer 12
Formed with the pixel defining layer 20 with multiple openings 210 on the substrate 10 of (not illustrated in Fig. 2A).
However, during carrying out whole face coating to substrate, in edge of the pixel defining layer on the outside of viewing area,
The luminous organic material of liquid easily covers pixel defining layer and outwards arbitrarily flowed, and causes the sub-pixel list of viewing area edge
The thickness of organic luminescence function layer in member is less than the thickness of the organic luminescence function layer in the sub-pixel unit inside viewing area
Degree, influences display quality；Meanwhile the organic luminescence function material of outflow causes viewing area edge after the coating of substrate whole face
Collimation declines (i.e. edge shape is uneven, thickness change is big) so that the edge area increase on viewing area periphery, increases
The big area of non-display area, so as to influence the requirement of current OLED display panel narrow frame design.
The content of the invention
In consideration of it, to solve problem of the prior art, embodiments of the invention provide a kind of organic electroluminescence display panel and
Its preparation method, display device, when can solve face coating luminous organic material whole using solwution method, at the edge of pixel defining layer
Place, luminous organic material easily outwards any flowing of liquid, causes OLED display panel hydraulic performance decline, non-display area area
The problem of increase.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
On the one hand, the embodiments of the invention provide a kind of organic electroluminescence display panel, the organic electroluminescence display panel bag
Include：Pixel defining layer positioned at the viewing area of the organic electroluminescence display panel, the pixel defining layer have multiple openings,
It is described to be open for setting organic light emitting functional layer；The organic electroluminescence display panel is also included around the pixel defining layer
Barrier layer；Wherein, the pixel defining layer and the organic luminescence function layer have an identical hydrophilic and hydrophobic, the barrier layer with
The organic luminescence function layer has opposite hydrophilic and hydrophobic.
Preferably, one week of the edge of the pixel defining layer contacts with the barrier layer.
Preferably, contact angle of contact angle of the drop in the pixel defining layer with drop on the barrier layer differs
At least 10 °.
Preferably, in addition to around the barrier layer spacing layer；Wherein, an outer peripheral Zhou Junyu on the barrier layer
The spacing layer contact.
It is further preferred that the spacing layer is made up of with the pixel defining layer identical material.
Preferably, along perpendicular to the organic electroluminescence display panel board direction, the thickness on the barrier layer be more than or
Equal to the thickness of the pixel defining layer.
It is further preferred that the thickness of the pixel defining layer is 0.5~5 μm, the thickness on the barrier layer is 1~10 μ
m。
Preferable on the basis of the above, the pixel defining layer has hydrophily, and the barrier layer has hydrophobicity.
Optionally, forming the hydrophilic material of the pixel defining layer includes polyimides, silica, silicon nitride, hydrophilic
At least one of property photoresist.
Optionally, forming the hydrophobic material on the barrier layer is included in fluorinated polyimide, hydrophobic resin at least
It is a kind of.
On the other hand, the embodiment of the present invention additionally provides a kind of preparation method of organic electroluminescence display panel, the preparation
Method includes：The pixel defining layer with multiple openings is formed in the viewing area of substrate, and around the pixel defining layer
Barrier layer；Using solwution method, organic light emitting functional layer is formed in the opening of the pixel defining layer；Wherein, the pixel
Defining layer and the organic luminescence function layer has identical hydrophilic and hydrophobic, and the barrier layer has with the organic luminescence function layer
There is opposite hydrophilic and hydrophobic.
Preferably, it is described to form the pixel defining layer with multiple openings in the viewing area of substrate, and around described
The barrier layer of pixel defining layer, including：The pixel defining layer with multiple openings is formed in the viewing area of substrate；Including
Formed on the substrate of the pixel defining layer around the barrier layer of the pixel defining layer.
It is further preferred that the preparation method also includes：Formed and enclosed on the substrate for including the pixel defining layer
After the barrier layer of the pixel defining layer, and formed in the opening of the pixel defining layer organic light emitting functional layer it
Before, to being surface-treated formed with the pixel defining layer and the substrate on the barrier layer, drop is defined in the pixel
Contact angle of the contact angle with drop on the barrier layer on layer differs at least 10 °.
Optionally, the surface treatment includes at least one in ultraviolet light processing, corona treatment, ozone processing
Kind.
It is further preferred that the preparation method also includes：Formed and enclosed on the substrate for including the pixel defining layer
Before the barrier layer of the pixel defining layer, around the pixel defining layer, formed between the pixel defining layer between having
The spacing layer of gap；Described formed on the substrate for including the pixel defining layer is wrapped around the barrier layer of the pixel defining layer
Include：Using solwution method, formed in the gap around the barrier layer of the pixel defining layer.
Optionally, it is described to surround the pixel defining layer, form the spacing layer between the pixel defining layer with gap
Including：While the pixel defining layer is formed, the spacing layer is formed.
It is preferable on the basis of the above, along the board direction perpendicular to the organic electroluminescence display panel, formation it is described
The thickness on barrier layer is more than or equal to the thickness of the pixel defining layer formed.
Another further aspect, the embodiment of the present invention additionally provide a kind of display device, and the display device includes described above
Organic electroluminescence display panel.
Based on this, in above-mentioned organic electroluminescence display panel provided in an embodiment of the present invention, due to positioned at the viewing area
The interior pixel defining layer has opposite hydrophilic and hydrophobic with the barrier layer around the pixel defining layer, and described
In viewing area, the organic luminescence function layer and the pixel defining layer that are arranged in the open area of the pixel defining layer have
There is identical hydrophilic and hydrophobic, therefore, when preparing the organic luminescence function layer using solwution method, the organic luminescence function layer of liquid
It is easy to the drawout in the open area of the pixel defining layer to come, and around the pixel defining layer, i.e., described display
The edge in region, the luminous organic material of liquid are obstructed by the barrier layer opposite with its hydrophilic and hydrophobic, it is difficult to cross institute
Barrier layer outwards arbitrarily flowing diffusion is stated, so as to ensure that the integral thickness of the organic luminescence function layer ultimately formed is uniform, is carried
The high product yield of OLED display panel；Simultaneously as organic luminescence function material is difficult to by the barrier on above-mentioned barrier layer
Outwards flowing, i.e., will not flow to the region on viewing area periphery, therefore the non-display area on viewing area periphery will not be increased
Area, so that above-mentioned OLED display panel provided in an embodiment of the present invention more meets the requirement of current narrow frame design.
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
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of OLED；
Fig. 2A is the structural representation for the pixel defining layer that prior art provides；
Fig. 2 B are cross-sectional views of the Fig. 2A along A-A' directions；
Fig. 3 A are a kind of structural representation one of organic electroluminescence display panel provided in an embodiment of the present invention；
Fig. 3 B are cross-sectional views one of Fig. 3 A along B-B' directions；
Fig. 4 A are hydrophilic contact angle principle schematic；
Fig. 4 B are hydrophobic contact angle principle schematic；
Fig. 5 A are the structural representation of pixel defining layer in a kind of organic electroluminescence display panel provided in an embodiment of the present invention
Two；
Fig. 5 B are cross-sectional views one of Fig. 5 A along B-B' directions；
Fig. 6 is the OLED section in viewing area in a kind of organic electroluminescence display panel provided in an embodiment of the present invention
Structural representation；
Fig. 7 is the preparation of pixel defining layer and spacing layer in a kind of organic electroluminescence display panel provided in an embodiment of the present invention
The specific schematic diagram of method.
Reference：
01- organic electroluminescence display panels；10- substrates；10a- viewing areas；11- anode electrode layers；12- negative electrode layers；
20- pixel defining layers；210- is open；30- organic luminescence function layers；31- hole injection layers；32- hole transmission layers；33- lights
Layer；34- electron transfer layers；35- electron injecting layers；40- barrier layers；The spacing layers of 50-；60-TFT array structure layers；70- is protected
Layer；80- insulating barriers.
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 embodiments of the invention provide a kind of organic electroluminescence display panel 01, as shown in Figure 3 A and Figure 3 B, organic hair
Light display panel 01 includes：Positioned at the viewing area 10a of the organic electroluminescence display panel 01 pixel defining layer 20, the picture
Element, which defines layer 20, has 210 (not illustrated in Fig. 3 A) of multiple openings, and the opening 210 is used to set organic light emitting functional layer
30；The organic electroluminescence display panel 01 is also included around the barrier layer 40 of the pixel defining layer 20；Wherein, pixel circle
Given layer 20 has identical hydrophilic and hydrophobic, the barrier layer 40 and the organic luminescence function with the organic luminescence function layer 30
Layer 30 has opposite hydrophilic and hydrophobic.
It should be noted that first, relevant technical staff in the field should be appreciated that Fig. 3 A and Fig. 3 B are only symbolically drawn
6 sub-pixel units, the quantity of the sub-pixel unit in above-mentioned organic electroluminescence display panel 01 provided in an embodiment of the present invention
It is not limited.
Here, relevant technical staff in the field is also understood that the pixel defining layer 20 is located at the organic light emission and shown
Show the viewing area 10a of panel 01, and the effect around the barrier layer 40 of the pixel defining layer 20 is to stop shape
The barrier layer 40 is crossed into the liquid during organic luminescence function layer 30 to spread to any flowing outside viewing area, because
This, is positioned at the neighboring area of the viewing area 10a around the barrier layer 40 of the pixel defining layer 20.
Secondth, described hydrophilic and hydrophobic, it is to hydrophily and hydrophobic general name；Wherein, hydrophily is typically to characterize material
To the performance of the affinity of water, conversely, hydrophobicity is then to characterize performance of the material to the repulsive force of water.
Therefore, the above-mentioned pixel defining layer 20 has identical hydrophilic and hydrophobic with the organic luminescence function layer 30,
And the barrier layer 40 with the organic luminescence function layer 30 there is opposite hydrophilic and hydrophobic to refer to, when the organic light emission work(
When ergosphere 30 has hydrophily with the pixel defining layer 20, the barrier layer 40 has hydrophobicity, and vice versa.
Here, generally adopted for the pixel defining layer 20 and the barrier layer 40, its hydrophilic and hydrophobic of solid-state for form
Defined with contact angle (θ), water is formed into drop, at the boundary line that gas, liquid, solid three are in contact, water droplet meeting in the surface of solids
Form a certain size contact angle.I.e., as shown in Figure 4 A, when contact angle θ≤90 °, it is stronger to show that the surface of solids has to water
Affinity, i.e. the solid material is hydrophilic material；As shown in Figure 4 B, as contact angle θ>90 °, show the surface of solids to water
With stronger repulsive force, i.e. the solid material is hydrophobic material.
Based on this, in above-mentioned organic electroluminescence display panel 01 provided in an embodiment of the present invention, due to positioned at the viewing area
The pixel defining layer 20 in the 10a of domain has opposite hydrophobe with the barrier layer 40 around the pixel defining layer 20
Property, and in the viewing area 10a, the organic luminescence function being arranged in the region of opening 210 of the pixel defining layer 20
Layer 30 has identical hydrophilic and hydrophobic, therefore, the organic luminescence function is prepared using solwution method with the pixel defining layer 20
During layer 30, the organic light emitting material of liquid, which is easy to the drawout in the region of opening 210 of the pixel defining layer 20, to be come, and
Around the pixel defining layer 20, i.e., described viewing area 10a edge, the luminous organic material of liquid is by close with it
The barrier on the opposite barrier layer 40 of hydrophobicity, it is difficult to the barrier layer 40 outwards any flowing diffusion is crossed, so as to ensure that most
End form into organic luminescence function layer 30 integral thickness it is uniform, improve the product yield of OLED display panel；Simultaneously as
Organic luminescence function material is difficult to outwards flow by the barrier on above-mentioned barrier layer 40, i.e., will not flow to viewing area 10a peripheries
Region, therefore the area of the non-display area on viewing area 10a peripheries will not be increased, so that the embodiment of the present invention provides
Above-mentioned OLED display panel more meet the requirement of current narrow frame design.
Further, in order to improve the blocking capability that the barrier layer 40 is flowed to the organic light emitting material of liquid, together
When, do not increase the area of the non-display area outside the viewing area 10a of the organic electroluminescence display panel 01 as much as possible,
Preferably, with reference to shown in figure 3A or Fig. 3 B, one week of the edge of the pixel defining layer 20 contacts with the barrier layer 40.
Further, contact of contact angle of the drop in the pixel defining layer 20 with drop on the barrier layer 40
Angle differs at least 10 °, i.e., ensures that the pixel defining layer 20 and the hydrophilic and hydrophobic on the barrier layer 40 differ larger as much as possible,
So that the barrier layer 40 has preferably blocking effect to the organic luminescence function layer 30.
Here, when carrying out Contact-angle measurement to the pixel defining layer 20 and the barrier layer 40, the drop of generally use
For water.Certainly, drop can also be other solution, such as liquid organic light emission material when preparing the organic luminescence function layer 30
Material, as long as ensureing to carry out the two using identical liquid the sign of contact angle.
Further, as fig. 5 a and fig. 5b, the organic electroluminescence display panel 01 also includes surrounding the barrier layer
40 spacing layer 50；Wherein, outer peripheral one week of the barrier layer 40 contacts with the spacing layer 50.
Need exist for explanation, first, the outward flange on the barrier layer 40, refer to the barrier layer 40 away from the picture
Element defines the edge of the side of layer 20.
Secondth, the effect of described spacing layer 50 is when preparing the barrier layer 40, can be beaten by solwution method, such as ink-jet
Print, the liquid starting material for forming barrier layer 40 is dropped between the pixel defining layer 20 and the spacing layer 50, so as to letter
The technical process prepared with the barrier layer 40 of the different materials of pixel defining layer 20 is changed.
Here, in order to simplify the preparation technology of the spacing layer 50, the spacing layer 50 defines preferably by with pixel
Layer 20 is formed in same preparation technology, i.e., the two is made up of identical material.
Further, in order to further improve blocking effect of the barrier layer 40 to the organic luminescence function layer 30,
Preferably, with reference to shown in figure 3B or Fig. 5 B, along the board direction perpendicular to the organic electroluminescence display panel 01, the barrier layer
40 thickness is more than or equal to the thickness of the pixel defining layer 20.
Preferably, the thickness of the pixel defining layer is 0.5~5 μm, and the thickness on the barrier layer is 1~10 μm.
Here, the above-mentioned specific difference of the two thickness can keep the thickness on the barrier layer 40 to be defined more than the pixel
The part of layer 20 can preferably stop the luminous organic material of liquid, while will not cause the organic electroluminescence display panel 01
Integral thickness it is excessive, influence the lightening design needs of organic electroluminescence display panel.
On the basis of the above, it is contemplated that organic luminescence function layer 30 is usually hydrophilic material at present, it is therefore preferable that
, the pixel defining layer 20 has hydrophily, and the barrier layer 40 has hydrophobicity.
Specifically, forming the hydrophilic material of the pixel defining layer 20 includes polyimides, silica, silicon nitride, parent
At least one of water-based photoresist；Forming the hydrophobic material on the barrier layer 40 includes fluorinated polyimide, hydrophobicity tree
At least one of fat.
On the basis of the above, in order that the luminous organic material of liquid is easier the opening in the pixel defining layer 20
Drawout comes in 210 regions, and will not spill-over in adjacent sub-pixel unit, with reference to shown in figure 3B or Fig. 5 B, the opening
210 sectional view is trapezoidal；Wherein, the length of side away from the side of substrate 10 is more than close to described in the trapezoidal figure
The length of side of the side of substrate 10, i.e., the trapezoidal figure of described opening 210 is the trapezoidal of a handstand.
A specific organic electroluminescence display panel 01 is exemplarily provided below, as shown in fig. 6, showing in the organic light emission
Show in panel 01, the OLED in the 10a of viewing area may include the thin film transistor (TFT) (TFT) being sequentially located on substrate 10
Array structure layer 60, protective layer 70, insulating barrier 80, with drained in TFT electrically connect anode electrode layer 11, positioned at pixel circle
The organic luminescence function layer 30 and negative electrode layer 12 in the region of opening 210 in given layer 20；Wherein, typical tft array
Structure sheaf 60 refer to include grid, gate insulation layer, active layer (when source electrode with drain electrode positioned at the top of active layer when, tft array knot
Structure layer 60 also includes etching barrier layer), the layer structure of source electrode and drain electrode.
Further, the embodiment of the present invention additionally provides a kind of preparation method of organic electroluminescence display panel 01, the system
Preparation Method includes：
S01, the pixel defining layer 20 with multiple openings 210 is formed in the viewing area 10a of substrate 10, and around institute
State the barrier layer 40 of pixel defining layer 20.
S02, using solwution method, organic light emitting functional layer 30 is formed in the opening 210 of the pixel defining layer 20.
Wherein, the pixel defining layer 20 has identical hydrophilic and hydrophobic, the resistance with the organic luminescence function layer 30
Barrier 40 has opposite hydrophilic and hydrophobic with the organic luminescence function layer 30.
It should be noted that first, with reference to shown in figure 3B, the substrate 10 is such as can be glass, rigidity lining metal
Bottom, or the flexible substrate such as plastics；The substrate can also be formed with including thin film transistor (TFT) (TFT) array structure layer
And the above-mentioned rigid substrate or flexible substrate of anode electrode layer 11 or negative electrode layer 12, it is not specifically limited herein.
Secondth, in above-mentioned steps S01, to forming the pixel defining layer 20 and around described in the pixel defining layer 20
The sequencing on barrier layer 40 is not construed as limiting, and can be adjusted flexibly according to concrete technology.
3rd, in above-mentioned steps S02, the solwution method is such as can be ink-jet printing process, slot coated method, herein not
It is construed as limiting.
Further, above-mentioned steps S01 is preferably and specifically included：
S11, the pixel defining layer 20 with multiple openings 210 is formed in the viewing area 10a of substrate 10.
S12, the stop for surrounding the pixel defining layer 20 is formed on the substrate 10 for including the pixel defining layer 20
Layer 40.
So, because the region for forming the barrier layer 40 is centered around around the pixel defining layer 20, it is initially formed
The region that the pixel defining layer 20 is formed after being advantageous to the barrier layer 40 is accurately positioned.
Further, in order to ensure that the pixel defining layer 20 and the hydrophilic and hydrophobic on the barrier layer 40 differ as much as possible
It is larger so that the barrier layer 40 has preferably blocking effect to the organic luminescence function layer.The preparation method is also wrapped
Include after above-mentioned steps S12 is completed, and before carrying out above-mentioned steps S02, to formed with the pixel defining layer 20 with it is described
The substrate 10 on barrier layer 40 is surface-treated, and makes contact angle of the drop in the pixel defining layer 20 with drop in the resistance
Contact angle in barrier 40 differs at least 10 °.
Specifically, the surface treatment includes ultraviolet light (UV) treatment with irradiation, plasma (such as oxygen gas plasma) place
Reason, ozone (O3At least one of) processing.
Further, as shown in fig. 7, the preparation method also includes, before above-mentioned steps S12 is carried out, around described
Pixel defining layer 20, form the spacing layer 50 between the pixel defining layer 20 with gap.
On this basis, the step S12 after completion above-mentioned steps S11 may include, using solwution method, in the gap
Formed around the barrier layer 40 of the pixel defining layer 20.
Specifically, the liquid starting material for forming barrier layer 40 can be dripped by ink-jet printing process or slot coated method
In gap area between the pixel defining layer 20 and the spacing layer 50, defined so as to simplify to prepare with the pixel
The technical process on the barrier layer 40 of 20 different materials of layer.
Further, in order to simplify the preparation technology of the spacing layer 50, the spacing layer 50 preferably by with pixel
Layer 20 is defined to be formed in same preparation technology, i.e., described spacing layer 50 preferably by with pixel defining layer 20 by identical
Material is formed.
Specifically, patterning processes or InkJet printing processes can be used, being formed in the viewing area 10a of substrate 10 has
The pixel defining layer 20 of multiple openings 210, meanwhile, formed in the region around the viewing area 10a similar " mouth "
The spacing layer 50 of font, and the pixel defining layer 20 is not in contact with each other with gap with the spacing phase of layer 50.
Here, typical patterning processes refer to apply a mask plate, are exposed by photoresist, develop, etch, remove light
The technique of photoresist；When the material of the pixel defining layer 20 is non-photo-sensing section bar material, it is necessary to reveal to photoresist after exposure imaging
The region of opening 210 to be formed that goes out and performed etching corresponding to the gap area on barrier layer 40 to be formed, with described in formation
Opening 210 and the gap between the pixel defining layer 20 and the spacing layer 50；When the material of the pixel defining layer 20 is
During photosensitive type material, development can be directly exposed to pixel defining layer material can form the opening 210 and correspond to
The gap area on barrier layer 40 to be formed, specific embodiment can continue to use prior art, will not be repeated here.
On the basis of the above, imitated to further improve stop of the barrier layer 40 to the organic luminescence function layer 30
Fruit, it is preferred that with reference to shown in figure 3B or Fig. 5 B, along perpendicular to the organic electroluminescence display panel 01 board direction, formation
The thickness on the barrier layer 40 is more than or equal to the thickness of the pixel defining layer 20 formed.
Further preferable, the thickness of the pixel defining layer 20 is 0.5~5 μm, and the thickness on the barrier layer 40 is 1
~10 μm.
Further, the embodiments of the invention provide a kind of display device, the display device to have including described above
Machine light emitting display panel 01.
Here, above-mentioned display device is shown such as can be OLED display, OLED TVs, DPF, Electronic Paper
Device.
It should be noted that all accompanying drawings of the present invention are the simple schematic diagrames of above-mentioned organic electroluminescence display panel, only it is clear
Chu describes this programme and embodies the structure related to inventive point, is existing structure for other structures unrelated with inventive point,
Not embodiment or only realizational portion in the accompanying drawings.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (16)
1. a kind of organic electroluminescence display panel, including：Pixel positioned at the viewing area of the organic electroluminescence display panel defines
Layer, the pixel defining layer has multiple openings, described to be open for setting organic light emitting functional layer；Characterized in that, also wrap
Include around the barrier layer of the pixel defining layer, the barrier layer is located at the neighboring area of the viewing area, and stop forms institute
Liquid when stating organic luminescence function layer crosses the barrier layer to any flowing diffusion outside the viewing area；
Wherein, the pixel defining layer has identical hydrophilic and hydrophobic, the barrier layer and institute with the organic luminescence function layer
Stating organic luminescence function layer has opposite hydrophilic and hydrophobic；The pixel defining layer has hydrophily, and the barrier layer, which has, dredges
It is water-based；
One week of the edge of the pixel defining layer contacts with the barrier layer；
The sectional view of the opening is trapezoidal, wherein, the length of side away from substrate side is more than close in the trapezoidal figure
The length of side of the substrate side.
2. organic electroluminescence display panel according to claim 1, it is characterised in that drop is in the pixel defining layer
Contact angle of the contact angle with drop on the barrier layer differs at least 10 °.
3. organic electroluminescence display panel according to claim 1, it is characterised in that also include the limit around the barrier layer
Position layer；Wherein, outer peripheral one week of the barrier layer contacts with the spacing layer.
4. organic electroluminescence display panel according to claim 3, it is characterised in that the spacing layer defines with the pixel
Layer is made up of identical material.
5. organic electroluminescence display panel according to claim 1, it is characterised in that along perpendicular to the organic light emitting display
The board direction of panel, the thickness on the barrier layer are more than or equal to the thickness of the pixel defining layer.
6. organic electroluminescence display panel according to claim 5, it is characterised in that the thickness of the pixel defining layer is
0.5~5 μm, the thickness on the barrier layer is 1~10 μm.
7. organic electroluminescence display panel according to claim 1, it is characterised in that form the hydrophilic of the pixel defining layer
Property material include polyimides, silica, silicon nitride, at least one of hydrophilic lithographic glue.
8. organic electroluminescence display panel according to claim 1, it is characterised in that form the hydrophobicity material on the barrier layer
Material includes at least one of fluorinated polyimide, hydrophobic resin.
A kind of 9. preparation method of organic electroluminescence display panel, it is characterised in that including：
The pixel defining layer with multiple openings, and the stop around the pixel defining layer are formed in the viewing area of substrate
Layer, the barrier layer are located at the neighboring area of the viewing area, stop that liquid when forming the organic luminescence function layer is got over
The barrier layer is crossed to any flowing diffusion outside the viewing area；
Using solwution method, organic light emitting functional layer is formed in the opening of the pixel defining layer；
Wherein, the pixel defining layer has identical hydrophilic and hydrophobic, the barrier layer and institute with the organic luminescence function layer
Stating organic luminescence function layer has opposite hydrophilic and hydrophobic；The pixel defining layer has hydrophily, and the barrier layer, which has, dredges
It is water-based；
One week of the edge of the pixel defining layer contacts with the barrier layer；
The sectional view of the opening is trapezoidal, wherein, the length of side away from substrate side is more than close in the trapezoidal figure
The length of side of the substrate side.
10. preparation method according to claim 9, it is characterised in that described to be formed in the viewing area of substrate with more
The pixel defining layer of individual opening, and around the barrier layer of the pixel defining layer, including：
The pixel defining layer with multiple openings is formed in the viewing area of substrate；
Formed on the substrate for including the pixel defining layer around the barrier layer of the pixel defining layer.
11. preparation method according to claim 10, it is characterised in that the preparation method also includes：Including
State and formed on the substrate of pixel defining layer after the barrier layer of the pixel defining layer, and opening in the pixel defining layer
Formed in mouthful before organic light emitting functional layer,
To being surface-treated formed with the pixel defining layer and the substrate on the barrier layer, drop is set to be defined in the pixel
Contact angle of the contact angle with drop on the barrier layer on layer differs at least 10 °.
12. preparation method according to claim 11, it is characterised in that the surface treatment is included at ultraviolet light
At least one of reason, corona treatment, ozone processing.
13. preparation method according to claim 10, it is characterised in that the preparation method also includes：Including
State and formed on the substrate of pixel defining layer before the barrier layer of the pixel defining layer,
Around the pixel defining layer, the spacing layer between the pixel defining layer with gap is formed；
Described formed on the substrate for including the pixel defining layer includes around the barrier layer of the pixel defining layer：Using
Solwution method, formed in the gap around the barrier layer of the pixel defining layer.
14. preparation method according to claim 13, it is characterised in that it is described to surround the pixel defining layer, formed with
The spacing layer with gap includes between the pixel defining layer：
While the pixel defining layer is formed, the spacing layer is formed.
15. according to the preparation method described in any one of claim 9 to 14, it is characterised in that along perpendicular to the organic light emission
The board direction of display panel, the thickness on the barrier layer of formation are more than or equal to the thickness of the pixel defining layer formed
Degree.
16. a kind of display device, it is characterised in that including the organic electroluminescence display panel described in any one of claim 1 to 8.
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| CN105118845B (en) | 2015-07-23 | 2018-01-26 | 京东方科技集团股份有限公司 | Organic electroluminescent display substrate and preparation method, display panel, display device |
| CN105489786B (en) * | 2016-02-29 | 2018-01-02 | 上海天马有机发光显示技术有限公司 | Encapsulating structure and method for packing, the display panel of array base palte |
| CN106024834B (en) * | 2016-05-31 | 2020-03-03 | 京东方科技集团股份有限公司 | OLED display panel, display device and manufacturing method of OLED display panel |
| KR102610024B1 (en) * | 2016-06-16 | 2023-12-06 | 삼성디스플레이 주식회사 | Display device |
| CN107026187A (en) * | 2016-07-25 | 2017-08-08 | 广东聚华印刷显示技术有限公司 | Pixel defining layer with close and distant sex differernce and its preparation method and application |
| CN106654069A (en) * | 2017-01-25 | 2017-05-10 | 京东方科技集团股份有限公司 | Display panel and manufacturing method therefor, and display apparatus |
| CN106941112B (en) * | 2017-05-05 | 2019-12-24 | 京东方科技集团股份有限公司 | Pixel defining layer, manufacturing method thereof and display substrate |
| CN108232031A (en) * | 2018-01-03 | 2018-06-29 | 深圳市华星光电技术有限公司 | OLED display device and preparation method |
| CN108511492B (en) * | 2018-04-02 | 2021-06-04 | 上海天马微电子有限公司 | Organic light-emitting display panel, manufacturing method thereof and organic light-emitting display device |
| CN108900659B (en) * | 2018-05-28 | 2020-09-18 | Oppo广东移动通信有限公司 | Electronic device |
| CN110137372B (en) * | 2019-05-15 | 2021-09-14 | 苏州清越光电科技股份有限公司 | Display panel and display device |
| CN110085772A (en) * | 2019-06-04 | 2019-08-02 | 京东方科技集团股份有限公司 | A kind of organic LED display panel and preparation method thereof |
| CN110649078B (en) * | 2019-09-30 | 2022-01-11 | 京东方科技集团股份有限公司 | Substrate for display and display device |
| CN117795692A (en) * | 2022-07-29 | 2024-03-29 | 京东方科技集团股份有限公司 | Display panel and display device |
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