CN104282729A - Organic luminous display panel, manufacturing method thereof and display device - Google Patents
Organic luminous display panel, manufacturing method thereof and display device Download PDFInfo
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Abstract
The embodiment of the invention provides an organic luminous display panel, a manufacturing method of the organic luminous display panel, and a display device, and relates to the technical field of electroluminescent display. The organic luminous display panel can solve the problem that the overall performance of a device is reduced due to the fact that liquid organic luminous materials at the edge of a pixel defining layer in an organic luminous display panel are prone to flowing outwards. The organic luminous display panel comprises a pixel defining layer located in a display region of the organic luminous display panel, the pixel defining layer is provided with a plurality of openings, and the openings are used for arranging organic luminous function layers; the organic luminous display panel further comprises a blocking layer surrounding the pixel defining layer; the pixel defining layer and the organic luminous function layers are identical in hydrophilia and hydrophobicity, and the blocking layer and the organic luminous function layers are opposite in hydrophilia and hydrophobicity. The manufacturing method of the organic luminous display panel is used for manufacturing the organic luminous display panel.
Description
Technical field
The present invention relates to electroluminance display technical field, particularly relate to a kind of organic electroluminescence display panel and preparation method thereof, display unit.
Background technology
Organic electroluminescence display device and method of manufacturing same (Organic Light-Emitting Device, be called for short OLED) relative to liquid crystal indicator (Liquid Crystal Display, be called for short LCD) there is self-luminous, reaction is fast, visual angle is wide, brightness is high, color is gorgeous, the advantage such as frivolous, is considered to main flow Display Technique of future generation.
As shown in Figure 1, the primary structure of OLED display is OLED, comprises substrate 10, anode electrode layer 11, organic luminescence function layer 30, negative electrode layer 12.Wherein, organic luminescence function layer 30 is core textures of OLED, forms primarily of hole injection layer 31, hole transmission layer 32, luminescent layer 33, electron transfer layer 34 and electron injecting layer 35; Anode electrode layer 11 is usually located at the below of organic luminescence function layer 30, certainly, also can be the below that negative electrode layer 12 is positioned at organic luminescence function layer 30.
Compare and prepare organic luminescence function layer with traditional employing vapour deposition method, the covering property of the organic luminescence function layer antianode electrode layer/negative electrode layer adopting solwution method to prepare is better, the leakage current of the OLED prepared is less, and adopt solwution method to be easy to whole coating of substrate, the production efficiency of OLED can be improved; Therefore, main employing such as the solwution methods such as inkjet printing, static discharge coating (ESC) and slot coated (Slit coating) prepare organic light emitting material at present.
As shown in Figure 2 A and 2 B, when adopting solwution method to prepare organic luminescence function layer, in order to open mutually isolated for the luminescent material corresponding to each sub-pixel unit, the substrate 10 being formed with anode electrode layer 11 (not illustrating in Fig. 2 A) or negative electrode layer 12 (not illustrating in Fig. 2 A) be formed with the pixel with multiple opening 210 and defines layer 20.
But, substrate is carried out in the process of whole coating, the edge of layer outside viewing area is defined in pixel, liquid luminous organic material easily covers pixel and defines layer and outwards flow arbitrarily, cause the thickness of the organic luminescence function layer in the sub-pixel unit of viewing area edge to be less than the thickness of the organic luminescence function layer in the sub-pixel unit of inside, viewing area, affect display quality; Simultaneously, after the organic luminescence function material flowed out causes whole of substrate to be coated with, the collimation of viewing area edge declines (namely edge's shape is uneven, thickness change is large), edge's area of viewing area periphery is increased, increase the area of non-display area, thus affect the requirement of the narrow frame design of current OLED display panel.
Summary of the invention
Given this, for solving the problem of prior art, embodiments of the invention provide a kind of organic electroluminescence display panel and preparation method thereof, display unit, when can solve employing whole of solwution method coating luminous organic material, the edge of layer is defined in pixel, liquid luminous organic material is outwards flowing arbitrarily easily, causes the problem that OLED display panel hydraulic performance decline, non-display area area increase.
For achieving the above object, embodiments of the invention adopt following technical scheme:
On the one hand, a kind of organic electroluminescence display panel is embodiments provided, described organic electroluminescence display panel comprises: the pixel being positioned at the viewing area of described organic electroluminescence display panel defines layer, described pixel defines layer and has multiple opening, and described opening is used for arranging organic light emitting functional layer; Described organic electroluminescence display panel also comprises the barrier layer defining layer around described pixel; Wherein, described pixel defines layer and has identical hydrophilic and hydrophobic with described organic luminescence function layer, and described barrier layer has contrary hydrophilic and hydrophobic with described organic luminescence function layer.
Preferably, described pixel defines all contacting with described barrier layer for a week of the edge of layer.
Preferably, the contact angle that drop defines on layer in described pixel differs at least 10 ° with the contact angle of drop on described barrier layer.
Preferably, the spacing layer around described barrier layer is also comprised; Wherein, within outer peripheral one week of described barrier layer, all contact with described spacing layer.
Preferred further, described spacing layer and described pixel define layer and are made up of identical material.
Preferably, along the direction, plate face perpendicular to described organic electroluminescence display panel, the thickness on described barrier layer is more than or equal to the thickness that described pixel defines layer.
Preferred further, the thickness that described pixel defines layer is 0.5 ~ 5 μm, and the thickness on described barrier layer is 1 ~ 10 μm.
Preferred on the basis of the above, described pixel defines layer and has hydrophily, and described barrier layer has hydrophobicity.
Optionally, form hydrophilic material that described pixel defines layer and comprise at least one in polyimides, silica, silicon nitride, hydrophilic lithographic glue.
Optionally, the hydrophobic material forming described barrier layer comprises at least one in fluorinated polyimide, hydrophobic resin.
On the other hand, the embodiment of the present invention additionally provides a kind of preparation method of organic electroluminescence display panel, and described preparation method comprises: form the pixel with multiple opening in the viewing area of substrate and define layer, and define the barrier layer of layer around described pixel; Adopt solwution method, define in described pixel in the opening of layer and form organic light emitting functional layer; Wherein, described pixel defines layer and has identical hydrophilic and hydrophobic with described organic luminescence function layer, and described barrier layer has contrary hydrophilic and hydrophobic with described organic luminescence function layer.
Preferably, the described viewing area at substrate forms the pixel with multiple opening and defines layer, and defines the barrier layer of layer around described pixel, comprising: form the pixel with multiple opening in the viewing area of substrate and define layer; The substrate including described pixel and define layer forms the barrier layer defining layer around described pixel.
Preferred further, described preparation method also comprises: formed around after described pixel defines the barrier layer of layer on the substrate including described pixel and define layer, and before defining in described pixel in the opening of layer and forming organic light emitting functional layer, carry out surface treatment to the substrate being formed with described pixel and defining layer and described barrier layer, the contact angle that drop is defined on layer in described pixel differs at least 10 ° with the contact angle of drop on described barrier layer.
Optionally, described surface treatment comprises at least one in UV-irradiation process, plasma treatment, ozone treatment.
Further preferred, described preparation method also comprises: formed on the substrate including described pixel and define layer before defining the barrier layer of layer around described pixel, define layer, formed and define with described pixel the spacing layer that interlayer has gap around described pixel; The described barrier layer defining layer around described pixel that formed on the substrate including described pixel and define layer comprises: adopt solwution method, form the barrier layer defining layer around described pixel in described gap.
Optionally, describedly defining layer around described pixel, formed and to define the spacing layer that interlayer has a gap with described pixel and comprise: being formed while described pixel defines layer, forming described spacing layer.
Preferred on the basis of the above, along the direction, plate face perpendicular to described organic electroluminescence display panel, the described pixel that the thickness on the described barrier layer of formation is more than or equal to formation defines the thickness of layer.
One side, the embodiment of the present invention additionally provide a kind of display unit again, and described display unit comprises organic electroluminescence display panel described above.
Based on this, in the above-mentioned organic electroluminescence display panel that the embodiment of the present invention provides, with the described barrier layer defining layer around described pixel, there is contrary hydrophilic and hydrophobic because the described pixel being positioned at described viewing area defines layer, and in described viewing area, be arranged on the described pixel organic luminescence function layer defined in the open area of layer to define layer with described pixel there is identical hydrophilic and hydrophobic, therefore, when adopting solwution method to prepare described organic luminescence function layer, liquid organic luminescence function layer is easy to sprawl in the open area that described pixel defines layer come, and define around layer in described pixel, the i.e. edge of described viewing area, liquid luminous organic material is subject to the obstruct on the barrier layer contrary with its hydrophilic and hydrophobic, be difficult to cross described barrier layer outwards any diffuses flow, thus ensure that the integral thickness of the final organic luminescence function layer formed is even, improve the product yield of OLED display panel, simultaneously, the obstruct being subject to above-mentioned barrier layer due to organic luminescence function material is difficult to outwardly, namely the region of viewing area periphery can not be flow to, therefore can not increase the area of the non-display area of viewing area periphery, thus the above-mentioned OLED display panel that the embodiment of the present invention is provided more meets the requirement of current narrow frame design.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of OLED;
Fig. 2 A defines the structural representation of layer for pixel that prior art provides;
Fig. 2 B is the cross-sectional view of Fig. 2 A along A-A' direction;
The structural representation one of a kind of organic electroluminescence display panel that Fig. 3 A provides for the embodiment of the present invention;
Fig. 3 B is the cross-sectional view one of Fig. 3 A along B-B' direction;
Fig. 4 A is hydrophilic contact angle principle schematic;
Fig. 4 B is hydrophobic contact angle principle schematic;
In a kind of organic electroluminescence display panel that Fig. 5 A provides for the embodiment of the present invention, pixel defines the structural representation two of layer;
Fig. 5 B is the cross-sectional view one of Fig. 5 A along B-B' direction;
OLED cross-sectional view in a kind of organic electroluminescence display panel that Fig. 6 provides for the embodiment of the present invention in viewing area;
In a kind of organic electroluminescence display panel that Fig. 7 provides for the embodiment of the present invention, pixel defines the concrete schematic diagram of preparation method of layer and spacing layer.
Reference numeral:
01-organic electroluminescence display panel; 10-substrate; 10a-viewing area; 11-anode electrode layer; 12-negative electrode layer; 20-pixel defines layer; 210-opening; 30-organic luminescence function layer; 31-hole injection layer; 32-hole transmission layer; 33-luminescent layer; 34-electron transfer layer; 35-electron injecting layer; 40-barrier layer; The spacing layer of 50-; 60-TFT array structure layer; 70-protective layer; 80-insulating barrier.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of organic electroluminescence display panel 01, as shown in Figure 3 A and Figure 3 B, described organic electroluminescence display panel 01 comprises: the pixel being positioned at the viewing area 10a of described organic electroluminescence display panel 01 defines layer 20, described pixel defines layer 20 and has multiple opening 210 (not illustrating in Fig. 3 A), and described opening 210 is for arranging organic light emitting functional layer 30; Described organic electroluminescence display panel 01 also comprises the barrier layer 40 defining layer 20 around described pixel; Wherein, described pixel defines layer 20 and has identical hydrophilic and hydrophobic with described organic luminescence function layer 30, and described barrier layer 40 has contrary hydrophilic and hydrophobic with described organic luminescence function layer 30.
It should be noted that, first, relevant technical staff in the field should be appreciated that Fig. 3 A and Fig. 3 B only schematically illustrates 6 sub-pixel unit, the quantity of the sub-pixel unit in the above-mentioned organic electroluminescence display panel 01 that the embodiment of the present invention provides is not as limit.
Here, relevant technical staff in the field it should also be understood that, described pixel defines the described viewing area 10a that layer 20 is positioned at described organic electroluminescence display panel 01, and the effect defining the described barrier layer 40 of layer 20 around described pixel stops that liquid when forming described organic luminescence function layer 30 crosses described barrier layer 40 any diffuses flow outside viewing area, therefore, namely the described barrier layer 40 defining layer 20 around described pixel is positioned at the neighboring area of described viewing area 10a.
The second, described hydrophilic and hydrophobic is to hydrophily and hydrophobic general name; Wherein, hydrophily normally exosyndrome material to the performance of the affinity of water, otherwise hydrophobicity is then the performance of exosyndrome material to the repulsive force of water.
Therefore, above-mentioned described pixel defines layer 20 and has identical hydrophilic and hydrophobic with described organic luminescence function layer 30, and described barrier layer 40 has contrary hydrophilic and hydrophobic with described organic luminescence function layer 30 to be referred to, when described organic luminescence function layer 30 and described pixel define layer 20 there is hydrophily time, described barrier layer 40 has hydrophobicity, and vice versa.
Here, be that solid-state described pixel defines layer 20 and described barrier layer 40 for form, its hydrophilic and hydrophobic adopts contact angle (θ) to define usually, and water is formed drop at the surface of solids, at the boundary line place that gas, liquid, solid three contact, water droplet can form a certain size contact angle.That is, as shown in Figure 4 A, when contact angle θ≤90 °, show that this surface of solids has stronger affinity to glassware for drinking water, namely this solid material is hydrophilic material; As shown in Figure 4 B, as contact angle θ >90 °, show that this surface of solids has stronger repulsive force to glassware for drinking water, namely this solid material is hydrophobic material.
Based on this, in the above-mentioned organic electroluminescence display panel 01 that the embodiment of the present invention provides, with the described barrier layer 40 defining layer 20 around described pixel, there is contrary hydrophilic and hydrophobic because the described pixel being positioned at described viewing area 10a defines layer 20, and in described viewing area 10a, be arranged on the described pixel organic luminescence function layer 30 defined in opening 210 region of layer 20 to define layer 20 with described pixel there is identical hydrophilic and hydrophobic, therefore, when adopting solwution method to prepare described organic luminescence function layer 30, liquid organic light emitting material is easy to sprawl in opening 210 region that described pixel defines layer 20 come, and define around layer 20 in described pixel, the i.e. edge of described viewing area 10a, liquid luminous organic material is subject to the obstruct on the barrier layer 40 contrary with its hydrophilic and hydrophobic, be difficult to cross described barrier layer 40 outwards any diffuses flow, thus ensure that the integral thickness of the final organic luminescence function layer 30 formed is even, improve the product yield of OLED display panel, simultaneously, the obstruct being subject to above-mentioned barrier layer 40 due to organic luminescence function material is difficult to outwardly, namely the region of viewing area 10a periphery can not be flow to, therefore can not increase the area of the non-display area of viewing area 10a periphery, thus the above-mentioned OLED display panel that the embodiment of the present invention is provided more meets the requirement of current narrow frame design.
Further, in order to improve the blocking capability of the organic light emitting material flowing of described barrier layer 40 liquid towards, simultaneously, do not increase the area of the non-display area outside the described viewing area 10a of described organic electroluminescence display panel 01 as much as possible, preferably, shown in figure 3A or Fig. 3 B, described pixel defines all contacting with described barrier layer 40 for a week of the edge of layer 20.
Further, the contact angle that drop defines on layer 20 in described pixel differs at least 10 ° with the contact angle of drop on described barrier layer 40, namely ensure that described pixel defines layer 20 and differs comparatively large with the hydrophilic and hydrophobic on described barrier layer 40 as much as possible, thus make described barrier layer 40 have blocking effect better to described organic luminescence function layer 30.
Here, to described pixel define layer 20 carry out Contact-angle measurement with described barrier layer 40 time, the drop usually adopted is water.Certainly, drop can be also other solution, such as, prepare liquid luminous organic material during described organic luminescence function layer 30, as long as ensure to adopt identical liquid to carry out the sign of contact angle to the two.
Further, as fig. 5 a and fig. 5b, described organic electroluminescence display panel 01 also comprises the spacing layer 50 around described barrier layer 40; Wherein, within outer peripheral one week of described barrier layer 40, all contact with described spacing layer 50.
Here it should be noted that, first, the outward flange on described barrier layer 40, refer to that the edge of layer 20 side is defined on described barrier layer 40 away from described pixel.
The second, when the effect of described spacing layer 50 is preparation described barrier layers 40, solwution method can be passed through, as inkjet printing, the liquid starting material forming barrier layer 40 is dropped in described pixel define between layer 20 and described spacing layer 50, thus simplifies the technical process prepared and define the described barrier layer 40 of layer 20 different materials with described pixel.
Here, in order to simplify the preparation technology of described spacing layer 50, described spacing layer 50 preferably adopts and defines layer 20 formed in same preparation technology with pixel, and namely the two is made up of identical material.
Further, in order to improve the blocking effect of described barrier layer 40 to described organic luminescence function layer 30 further, preferably, shown in figure 3B or Fig. 5 B, along the direction, plate face perpendicular to described organic electroluminescence display panel 01, the thickness on described barrier layer 40 is more than or equal to the thickness that described pixel defines layer 20.
Preferably, the thickness that described pixel defines layer is 0.5 ~ 5 μm, and the thickness on described barrier layer is 1 ~ 10 μm.
Here, the above-mentioned concrete difference of the two thickness can keep the thickness on described barrier layer 40 to be greater than, and part that described pixel defines layer 20 can stop liquid luminous organic material better, the integral thickness of described organic electroluminescence display panel 01 can not be made excessive simultaneously, affect the lightening design needs of organic electroluminescence display panel.
On the basis of the above, consider that current organic luminescence function layer 30 is hydrophilic material usually, therefore, preferably, described pixel defines layer 20 and has hydrophily, and described barrier layer 40 has hydrophobicity.
Concrete, form hydrophilic material that described pixel defines layer 20 and comprise at least one in polyimides, silica, silicon nitride, hydrophilic lithographic glue; The hydrophobic material forming described barrier layer 40 comprises at least one in fluorinated polyimide, hydrophobic resin.
On the basis of the above, come to make to sprawl in easier opening 210 region defined in described pixel in layer 20 of liquid luminous organic material, and can not spill-over in adjacent sub-pixel unit, shown in figure 3B or Fig. 5 B, the sectional view of described opening 210 is trapezoidal; Wherein, be greater than the length of side near described substrate 10 side away from the length of side of described substrate 10 side in described trapezoidal figure, namely the trapezoidal figure of described opening 210 is the trapezoidal of a handstand.
One concrete organic electroluminescence display panel 01 is exemplarily provided below, as shown in Figure 6, in described organic electroluminescence display panel 01, the OLED being arranged in viewing area 10a can comprise thin-film transistor (TFT) the array structure layer 60 be arranged in successively on substrate 10, protective layer 70, insulating barrier 80, with TFT drain be electrically connected anode electrode layer 11, be arranged in organic luminescence function layer 30 and negative electrode layer 12 that described pixel defines opening 210 region of layer 20; Wherein, typical tft array structure sheaf 60 refers to the layer structure comprising grid, gate insulation layer, active layer (when source electrode is positioned at the top of active layer with drain electrode, tft array structure sheaf 60 also includes etching barrier layer), 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, and described preparation method comprises:
S01, form the pixel with multiple opening 210 at the viewing area 10a of substrate 10 and define layer 20, and define the barrier layer 40 of layer 20 around described pixel.
S02, employing solwution method, define in described pixel in the opening 210 of layer 20 and form organic light emitting functional layer 30.
Wherein, described pixel defines layer 20 and has identical hydrophilic and hydrophobic with described organic luminescence function layer 30, and described barrier layer 40 has contrary hydrophilic and hydrophobic with described organic luminescence function layer 30.
It should be noted that, first, with reference to shown in figure 3B, described substrate 10 can be such as the rigid substrate such as glass, metal, also can be the flexible substrate such as plastics; Described substrate for being formed with the above-mentioned rigid substrate or flexible substrate that comprise thin-film transistor (TFT) array structure layer and anode electrode layer 11 or negative electrode layer 12, can not do concrete restriction at this yet.
The second, in above-mentioned steps S01, the sequencing forming described pixel and define layer 20 and the described barrier layer 40 of defining layer 20 around described pixel is not construed as limiting, can adjusts flexibly according to concrete technology.
Three, in above-mentioned steps S02, described solwution method can be such as ink-jet printing process, slot coated method etc., in this no limit.
Further, above-mentioned steps S01 preferably specifically comprises:
S11, form the pixel with multiple opening 210 at the viewing area 10a of substrate 10 and define layer 20.
S12, on the substrate 10 including described pixel and define layer 20, form the barrier layer 40 defining layer 20 around described pixel.
Like this, because the region forming described barrier layer 40 is centered around described pixel to define layer 20 around, first form described pixel and define accurate location to the region that described barrier layer 40 is formed after layer 20 is conducive to.
Further, in order to ensure that described pixel defines layer 20 and differs comparatively large with the hydrophilic and hydrophobic on described barrier layer 40 as much as possible, described barrier layer 40 is made to have blocking effect better to described organic luminescence function layer.After described preparation method has also been included in above-mentioned steps S12, and before carrying out above-mentioned steps S02, define layer 20 and carry out surface treatment to being formed with described pixel with the substrate 10 on described barrier layer 40, the contact angle that drop is defined on layer 20 in described pixel differs at least 10 ° with the contact angle of drop on described barrier layer 40.
Concrete, described surface treatment comprises ultraviolet light (UV) treatment with irradiation, plasma (as oxygen gas plasma) process, ozone (O
3) at least one in process.
Further, as shown in Figure 7, described preparation method also comprises, and before carrying out above-mentioned steps S12, defines layer 20 around described pixel, and formation and described pixel define the spacing layer 50 between layer 20 with gap.
On this basis, the step S12 after completing above-mentioned steps S11 can comprise, and adopts solwution method, forms the barrier layer 40 defining layer 20 around described pixel in described gap.
Concrete, ink-jet printing process or slot coated method can be passed through, be dropped in forming the liquid starting material on barrier layer 40 in the gap area that described pixel defines between layer 20 and described spacing layer 50, thus simplify the technical process that preparation and described pixel define the described barrier layer 40 of layer 20 different materials.
Further, in order to simplify the preparation technology of described spacing layer 50, described spacing layer 50 preferably adopts and defines layer 20 formed in same preparation technology with pixel, and namely described spacing layer 50 preferably adopts and defines layer 20 with pixel and be made up of identical material.
Concrete, patterning processes or InkJet printing processes can be adopted, in the viewing area 10a of substrate 10, form the pixel with multiple opening 210 define layer 20, simultaneously, forming the described spacing layer 50 of similar " mouth " font in the region around described viewing area 10a, and described pixel defines layer 20 is not in contact with each other mutually with described spacing layer 50 and has gap.
Here, typical patterning processes refers to application mask plate, by the technique of photoresist exposure, development, etching, removal photoresist; When the material that described pixel defines layer 20 is non-photo-sensing shaped material, after exposure imaging, need opening 210 region to be formed of exposing photoresist and the gap area that corresponds to barrier layer 40 to be formed to etch, define gap between layer 20 and described spacing layer 50 to form described opening 210 and described pixel; When the material that described pixel defines layer 20 is photosensitive type material, directly can define layer material to pixel to carry out exposure imaging and can form described opening 210 and correspond to the gap area on barrier layer 40 to be formed, specific embodiment can continue to use prior art, does not repeat them here.
On the basis of the above, in order to improve the blocking effect of described barrier layer 40 to described organic luminescence function layer 30 further, preferably, shown in figure 3B or Fig. 5 B, along perpendicular to the direction, plate face of described organic electroluminescence display panel 01, the described pixel that the thickness on the described barrier layer 40 of formation is more than or equal to formation defines the thickness of layer 20.
Further preferred, the thickness that described pixel defines layer 20 is 0.5 ~ 5 μm, and the thickness on described barrier layer 40 is 1 ~ 10 μm.
Further, embodiments provide a kind of display unit, described display unit comprises organic electroluminescence display panel 01 described above.
Here, above-mentioned display unit can be such as the display unit such as OLED display, OLED TV, DPF, Electronic Paper.
It should be noted that, institute of the present invention drawings attached is the simple schematic diagram of above-mentioned organic electroluminescence display panel, only for the clear this programme that describes embodies the structure relevant to inventive point, the structure irrelevant with inventive point for other is existing structure, in the accompanying drawings not embodiment or only realizational portion.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (18)
1. an organic electroluminescence display panel, comprising: the pixel being positioned at the viewing area of described organic electroluminescence display panel defines layer, and described pixel defines layer and has multiple opening, and described opening is used for arranging organic light emitting functional layer; It is characterized in that, also comprise the barrier layer defining layer around described pixel;
Wherein, described pixel defines layer and has identical hydrophilic and hydrophobic with described organic luminescence function layer, and described barrier layer has contrary hydrophilic and hydrophobic with described organic luminescence function layer.
2. organic electroluminescence display panel according to claim 1, is characterized in that, described pixel defines all contacting with described barrier layer for a week of the edge of layer.
3. organic electroluminescence display panel according to claim 1, is characterized in that, the contact angle that drop defines on layer in described pixel differs at least 10 ° with the contact angle of drop on described barrier layer.
4. organic electroluminescence display panel according to claim 1, is characterized in that, also comprises the spacing layer around described barrier layer; Wherein, within outer peripheral one week of described barrier layer, all contact with described spacing layer.
5. organic electroluminescence display panel according to claim 4, is characterized in that, described spacing layer and described pixel define layer and be made up of identical material.
6. organic electroluminescence display panel according to claim 1, is characterized in that, along the direction, plate face perpendicular to described organic electroluminescence display panel, the thickness on described barrier layer is more than or equal to the thickness that described pixel defines layer.
7. organic electroluminescence display panel according to claim 6, is characterized in that, the thickness that described pixel defines layer is 0.5 ~ 5 μm, and the thickness on described barrier layer is 1 ~ 10 μm.
8. the organic electroluminescence display panel according to any one of claim 1 to 7, is characterized in that, described pixel defines layer and has hydrophily, and described barrier layer has hydrophobicity.
9. organic electroluminescence display panel according to claim 8, is characterized in that, forms hydrophilic material that described pixel defines layer and comprises at least one in polyimides, silica, silicon nitride, hydrophilic lithographic glue.
10. organic electroluminescence display panel according to claim 8, is characterized in that, the hydrophobic material forming described barrier layer comprises at least one in fluorinated polyimide, hydrophobic resin.
The preparation method of 11. 1 kinds of organic electroluminescence display panels, is characterized in that, comprising:
Form the pixel with multiple opening in the viewing area of substrate and define layer, and define the barrier layer of layer around described pixel;
Adopt solwution method, define in described pixel in the opening of layer and form organic light emitting functional layer;
Wherein, described pixel defines layer and has identical hydrophilic and hydrophobic with described organic luminescence function layer, and described barrier layer has contrary hydrophilic and hydrophobic with described organic luminescence function layer.
12. preparation methods according to claim 11, is characterized in that, the described viewing area at substrate forms the pixel with multiple opening and defines layer, and defines the barrier layer of layer around described pixel, comprising:
Form the pixel with multiple opening in the viewing area of substrate and define layer;
The substrate including described pixel and define layer forms the barrier layer defining layer around described pixel.
13. preparation methods according to claim 12, it is characterized in that, described preparation method also comprises: formed on the substrate including described pixel and define layer around after described pixel defines the barrier layer of layer, and before defining in described pixel in the opening of layer and forming organic light emitting functional layer
Carry out surface treatment to the substrate being formed with described pixel and defining layer and described barrier layer, the contact angle that drop is defined on layer in described pixel differs at least 10 ° with the contact angle of drop on described barrier layer.
14. preparation methods according to claim 13, is characterized in that, described surface treatment comprises at least one in UV-irradiation process, plasma treatment, ozone treatment.
15. preparation methods according to claim 12, is characterized in that, described preparation method also comprises: formed before defining the barrier layer of layer around described pixel on the substrate including described pixel and define layer,
Define layer around described pixel, formed and define with described pixel the spacing layer that interlayer has gap;
The described barrier layer defining layer around described pixel that formed on the substrate including described pixel and define layer comprises: adopt solwution method, form the barrier layer defining layer around described pixel in described gap.
16. preparation methods according to claim 15, is characterized in that, describedly define layer around described pixel, are formed to define the spacing layer that interlayer has a gap with described pixel and comprise:
While the described pixel of formation defines layer, form described spacing layer.
17., according to claim 11 to the preparation method described in 16 any one, is characterized in that, along perpendicular to the direction, plate face of described organic electroluminescence display panel, the described pixel that the thickness on the described barrier layer of formation is more than or equal to formation defines the thickness of layer.
18. 1 kinds of display unit, is characterized in that, comprise the organic electroluminescence display panel described in any one of claim 1 to 10.
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| CN105118845A (en) * | 2015-07-23 | 2015-12-02 | 京东方科技集团股份有限公司 | Organic electroluminescence display substrate, preparation method thereof, display panel and display apparatus |
| CN105489786A (en) * | 2016-02-29 | 2016-04-13 | 上海天马有机发光显示技术有限公司 | Packaging structure and packaging method of array substrate and display panel |
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| 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 |
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| 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 |
| CN108511492A (en) * | 2018-04-02 | 2018-09-07 | 上海天马微电子有限公司 | Organic light emitting display panel and preparation method thereof, organic light-emitting display device |
| CN108900659A (en) * | 2018-05-28 | 2018-11-27 | Oppo广东移动通信有限公司 | Electronic device |
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| CN110137372A (en) * | 2019-05-15 | 2019-08-16 | 昆山维信诺科技有限公司 | Display panel and display 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 |
| CN110649078A (en) * | 2019-09-30 | 2020-01-03 | 京东方科技集团股份有限公司 | Substrate for display and display device |
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