CN107403828A - A kind of display panel and preparation method thereof - Google Patents
A kind of display panel and preparation method thereof Download PDFInfo
- Publication number
- CN107403828A CN107403828A CN201710644089.9A CN201710644089A CN107403828A CN 107403828 A CN107403828 A CN 107403828A CN 201710644089 A CN201710644089 A CN 201710644089A CN 107403828 A CN107403828 A CN 107403828A
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- hydrophobic
- layer
- film layer
- display panel
- underlay substrate
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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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
-
- 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
Abstract
The application provides a kind of display panel and preparation method thereof, during solving to make display panel using inkjet printing methods in the prior art, because ink is each pixel cell film forming is uneven caused by the raised barricade of pixel defining layer is climbed the problem of.The display panel that the application provides, including：Underlay substrate and the first film layer being arranged on the underlay substrate, wherein, first film layer is in the hydrophobic layer backwards to the underlay substrate side with patterning；The hydrophobic layer includes a plurality of the first hydrophobic bar extended in a first direction, and the second hydrophobic bar that a plurality of edge extends perpendicular to the first direction, the a plurality of first hydrophobic bar and a plurality of second hydrophobic bar are arranged in a crossed manner, the display panel is divided into multiple pixel cells in array distribution, each pixel cell is provided with luminous organic material, and the luminous organic material between the two neighboring pixel cell passes through the described first hydrophobic bar or the second hydrophobic bar interval.
Description
Technical field
The application is related to display technology field, more particularly to a kind of display panel and preparation method thereof.
Background technology
In various film techniques, solution film forming technology is increasingly valued by people.So-called solution film forming process, i.e.,
Material requested by processing, such as nano level molecule is dispersed into, is then dissolved in corresponding solvent, recycles it
His equipment by the solution deposition in substrate surface, after solvent evaporation, you can form required film in substrate surface.
Inkjet printing is one kind more important in solution film forming technology, and simple to operate, cost is cheap, work because it has
The advantages that skill is simple and is easily achieved large scale, and be widely used in preparing OLED colored filters, organic thin-film transistor
Pipe, metal electrode and three-dimensional divider wall etc., all achieve good achievement.
Inkjet technology (Ink Jet Printing, IJP) although have many advantages, such as it is above-mentioned, in solution film forming process
In, there is also it is many in the urgent need to address the problem of.For example, prior art is using IJP fabrication techniques macromolecular LED two
It is typically first to form pixel on underlay substrate to define during pole pipe (polymer light-emitting diode, PLED)
Layer, pixel defining layer includes the raised barrier wall structure of multiple physics, for display panel to be divided into multiple spaced pictures
Plain unit, two pixel cells of arbitrary neighborhood enter between-line spacing by the raised barricade of pixel defining layer, and then pass through IJP
Marking ink is printed upon in each pixel cell by mode.Then the display panel for being printed with marking ink is being dried
During, because ink can be climbed at the barricade edge of projection, and it is uneven to ultimately result in film forming in each pixel, i.e. existing
Technology can exist because ink is in the raised barricade progress of pixel defining layer when making display panel using inkjet printing methods
The problem of each pixel cell film forming is uneven caused by climbing.
Apply for content
The application provides a kind of display panel and preparation method thereof, to solve to use inkjet printing methods system in the prior art
When making display panel, due to ink, each pixel cell film forming is not caused by the raised barricade of pixel defining layer is climbed
The problem of uniform.
The embodiment of the present application provides a kind of display panel, including：Underlay substrate and it is arranged on the underlay substrate
The first film layer, wherein, first film layer backwards to the underlay substrate side have patterning hydrophobic layer；
The hydrophobic layer includes a plurality of the first hydrophobic bar extended in a first direction, and a plurality of edge is perpendicular to described first
Second hydrophobic bar of direction extension, a plurality of first hydrophobic bar and a plurality of second hydrophobic bar are arranged in a crossed manner, will be described aobvious
Show that panel is divided into multiple pixel cells in array distribution, each pixel cell is provided with luminous organic material, adjacent
Luminous organic material between two pixel cells passes through the described first hydrophobic bar or the second hydrophobic bar interval.
Preferably, first film layer contains fluorine material, first film layer backwards to the underlay substrate one side by
During to patterning ultraviolet lighting, the fluorine material in first film layer moves to first film layer backwards to the underlay substrate
Surface, form the hydrophobic layer of patterning.
Preferably, first film layer is hole injection layer.
Preferably, the material of the hole injection layer be fluorine-containing isocyanates, it is fluorine-containing alkyl vinyl glycols, fluorine-containing
Alkyl vinyl glycols, fluorine-containing carboxylic acid halides class or perfluoroalkyl methacrylate class.
Preferably, each pixel cell is also set up between first film layer and the luminous organic material
There is hole transmission layer.
Preferably, each pixel cell is additionally provided with anode below the luminous organic material, and in institute
State and negative electrode is additionally provided with above luminous organic material.
The embodiment of the present application also provides a kind of preparation method of display panel, for making the institute of the embodiment of the present application offer
Display panel is stated, the preparation method includes：
The first film layer is formed on underlay substrate；
The hydrophobic layer of patterning is formed backwards to the one side of the underlay substrate in first film layer, wherein, it is described hydrophobic
Layer includes a plurality of the first hydrophobic bar extended in a first direction, and a plurality of edge extend perpendicular to the first direction it is second thin
Water bar, the first hydrophobic bar and the second hydrophobic bar are arranged in a crossed manner, the display panel are divided into multiple in array point
The pixel cell of cloth；
Luminous organic material is formed in each pixel cell.
Preferably, the one side backwards to the underlay substrate in first film layer forms the hydrophobic layer of patterning,
Specifically include：
One side using the first film layer described in ultraviolet light backwards to the underlay substrate, wherein, in ultraviolet light with being formed
Have and be provided with the mask plate of patterning between the display panel of the first film layer, and then make first film layer backwards to the lining
The one side of substrate is by the ultraviolet light patterned, so that the fluorine material in first film layer moves to first film
Layer forms the hydrophobic layer of patterning backwards to the one side of the underlay substrate, wherein, the pattern of the mask plate is dredged with described
The pattern of water layer matches.
Preferably, it is described that the first film layer is formed on underlay substrate, specifically include：Hole is formed on underlay substrate
Implanted layer.
Preferably, it is described to form luminous organic material in each pixel cell, specifically include：Pass through inkjet printing
Method, luminous organic material is printed in each pixel cell.
The embodiment of the present application has the beneficial effect that：Display panel has pattern in the first film layer backwards to the side of underlay substrate
The hydrophobic layer of change, the hydrophobic layer include a plurality of first hydrophobic bar and the second hydrophobic bar arranged in a crossed manner, by the display panel point
Multiple pixel cells in array distribution are cut into, and then when by inkjet printing methods marking ink in pixel cell, are handed over
The first hydrophobic bar and the second hydrophobic bar that fork is set can stop the mutual circulation of the marking ink of adjacent pixel unit, Jin Erke
To play a part of pixel defining layer, being additionally, since hydrophobic layer does not have conventional pixel to define the raised barrier wall structure of layer, stamping ink
Water will not also be climbed in barricade, and then can avoid marking ink due to caused each pixel when barricade is climbed
The problem of film forming is uneven in unit.
Brief description of the drawings
Fig. 1 is the cross section structure diagram for the display panel that the embodiment of the present application provides；
Fig. 2 is the overlooking the structure diagram for the display panel that the embodiment of the present application provides；
Fig. 3 is the Making programme schematic diagram for the display panel that the embodiment of the present application provides.
Embodiment
The implementation process of the embodiment of the present application is described in detail with reference to Figure of description.It should be noted that
Same or similar label represents same or similar element or the element with same or like function from beginning to end.Lead to below
It is exemplary to cross the embodiment being described with reference to the drawings, and is only used for explaining the application, and it is not intended that limitation to the application.
Referring to shown in Fig. 1 and Fig. 2, the embodiment of the present application provides a kind of display panel, including：Underlay substrate 2 and setting
The first film layer 2 on underlay substrate 1, wherein, the first film layer 2 has the hydrophobic of patterning backwards to the side of underlay substrate 1
Layer 21；
Hydrophobic layer 21 includes the first hydrophobic bar 211 of a plurality of (arrow AB is signified in such as figure) in the first direction extension, and
The second hydrophobic bar 212 that a plurality of edge extends perpendicular to first direction, a plurality of first hydrophobic bar 211 and a plurality of second hydrophobic bar 212
It is arranged in a crossed manner, display panel is divided into multiple pixel cells 213 in array distribution, each pixel cell 213 has been provided with
Machine luminescent material, the luminous organic material between two neighboring pixel cell 213 pass through the first hydrophobic hydrophobic bar of bar 211 or the second
212 intervals.
In the embodiment of the present application, display panel has the hydrophobic of patterning in the first film layer backwards to the side of underlay substrate
Layer, the hydrophobic layer include a plurality of first hydrophobic bar and the second hydrophobic bar arranged in a crossed manner, and it is in battle array that display panel, which is divided into multiple,
The pixel cell of column distribution, and then when by inkjet printing methods marking ink in pixel cell, arranged in a crossed manner first
Hydrophobic bar and the second hydrophobic bar can stop the mutual circulation of the marking ink of adjacent pixel unit, and then can play pixel circle
The effect of given layer, being additionally, since hydrophobic layer does not have conventional pixel to define the raised barrier wall structure of layer, and marking ink will not also kept off
Wall is climbed, and then can avoid marking ink because film forming is not in caused each pixel cell when barricade is climbed
The problem of uniform.
Can be specifically the material of organic luminous layer it should be noted that the ink printed in pixel cell, can also
The material of hole injection layer, or or hole transmission layer material.Because the requirement of different product is different, hole
Implanted layer and hole transmission layer can be configured according to being actually needed, but for organic display panel, luminous organic material one
As for the film layer that must be provided with.
In the specific implementation, the first film layer is the film layer containing fluorine material, and the first film layer exists backwards to the one side of underlay substrate
During by patterning ultraviolet lighting, the fluorine material in the first film layer moves to the first film layer backwards to the surface of underlay substrate, is formed
The hydrophobic layer of patterning, i.e. hydrophobic layer is the film layer that the first film layer is formed on a preset condition based.
Preferably, the first film layer is hole injection layer.In the specific implementation, for organic display panel, typically exist
It is disposed with underlay substrate：Anode, hole injection layer, hole transmission layer, organic luminous layer etc., compared to hole transport
Layer and organic luminous layer, it will usually different thickness corresponding to being formed in different photochromic pixel cells, and hole injection layer is usual
It is consistent in area thickness corresponding to each pixel cell, common layer can be used as, easily in the one side backwards to underlay substrate
Form the hydrophobic layer of patterning.
Preferably, the material of hole injection layer is fluorine-containing isocyanates, fluorine-containing alkyl vinyl glycols, containing fluoroalkyl
Vinyl glycols, fluorine-containing carboxylic acid halides class or perfluoroalkyl methacrylate class.When hole injection layer is above material, sky can be made
Cave transport layer play be advantageous to hole injection while, the patterned hydrophobic layer for defining pixel cell can be formed.
In the specific implementation, when the first film layer is hole injection layer, each pixel cell is in the first film layer and organic light emission
Hole transmission layer is additionally provided between material.Certainly, for a complete display panel, on luminous organic material
Typically it is additionally provided with cathode layer.Furthermore it is also possible to according to the demand of reality, can be between luminous organic material and cathode layer
Electron injecting layer is set, electron transfer layer can also be set between electron injecting layer and luminous organic material.
Shown in Figure 3, the embodiment of the present application also provides a kind of preparation method of display panel, for making the application reality
The display panel of example offer is applied, preparation method includes：
Step 101, the first film layer is formed on underlay substrate.
Step 102, the hydrophobic layer patterned is formed backwards to the one side of underlay substrate in the first film layer, wherein, hydrophobic layer bag
A plurality of the first hydrophobic bar extended in a first direction, and the second hydrophobic bar that a plurality of edge extends perpendicular to first direction are included, the
One hydrophobic bar and the second hydrophobic bar are arranged in a crossed manner, and display panel is divided into multiple pixel cells in array distribution.
Step 103, form luminous organic material in each pixel cell.
Preferably, the hydrophobic layer of patterning is formed on step 102, in first film layer backwards to the one side of underlay substrate,
Specifically include：
One side using the film layer of ultraviolet light first backwards to underlay substrate, wherein, in ultraviolet light and formed with the first film
The mask plate of patterning is set between the display panel of layer, and then the first film layer is patterned backwards to the one side of underlay substrate
Ultraviolet light so that the fluorine material in the first film layer moves to one side of first film layer backwards to underlay substrate, form pattern
The hydrophobic layer of change, wherein, the pattern of mask plate and the pattern of hydrophobic layer match.
Preferably, the first film layer is formed on underlay substrate, is specifically included：Hole injection is formed on underlay substrate
Layer.
Preferably, luminous organic material is formed in each pixel cell, specifically included：By inkjet printing methods,
Printing luminous organic material in each pixel cell.
The embodiment of the present application has the beneficial effect that：Display panel has pattern in the first film layer backwards to the side of underlay substrate
The hydrophobic layer of change, the hydrophobic layer include a plurality of first hydrophobic bar and the second hydrophobic bar arranged in a crossed manner, display panel are divided into
Multiple pixel cells in array distribution, and then when by inkjet printing methods marking ink in pixel cell, intersection is set
The the first hydrophobic bar and the second hydrophobic bar put can stop the mutual circulation of the marking ink of adjacent pixel unit, and then can rise
To the effect of pixel defining layer, being additionally, since hydrophobic layer does not have conventional pixel to define the raised barrier wall structure of layer, marking ink
It will not be climbed in barricade, and then marking ink can be avoided due to caused each pixel cell when barricade is climbed
The problem of interior film forming is uneven.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the application to the application
God and scope.So, if these modifications and variations of the application belong to the scope of the application claim and its equivalent technologies
Within, then the application is also intended to comprising including these changes and modification.
Claims (10)
- A kind of 1. display panel, it is characterised in that including：Underlay substrate and the first film being arranged on the underlay substrate Layer, wherein, first film layer is in the hydrophobic layer backwards to the underlay substrate side with patterning；The hydrophobic layer includes a plurality of the first hydrophobic bar extended in a first direction, and a plurality of edge is perpendicular to the first direction Second hydrophobic bar of extension, a plurality of first hydrophobic bar and a plurality of second hydrophobic bar are arranged in a crossed manner, by the display surface Plate is divided into multiple pixel cells in array distribution, and each pixel cell is provided with luminous organic material, two neighboring Luminous organic material between the pixel cell passes through the described first hydrophobic bar or the second hydrophobic bar interval.
- 2. display panel as claimed in claim 1, it is characterised in that first film layer contains fluorine material, first film Layer backwards to the underlay substrate one side when by patterning ultraviolet lighting, the fluorine material in first film layer moves to institute The first film layer is stated backwards to the surface of the underlay substrate, forms the hydrophobic layer of patterning.
- 3. display panel as claimed in claim 2, it is characterised in that first film layer is hole injection layer.
- 4. display panel as claimed in claim 3, it is characterised in that the material of the hole injection layer is fluorine-containing isocyanic acid Ester, fluorine-containing alkyl vinyl glycols, fluorine-containing alkyl vinyl glycols, fluorine-containing carboxylic acid halides class or perfluoroalkyl methacrylate Class.
- 5. display panel as claimed in claim 3, is characterised by, each pixel cell is in the hole injection layer Hole transmission layer is additionally provided between the luminous organic material.
- 6. display panel as claimed in claim 5, it is characterised in that each pixel cell is in the luminous organic material Lower section be additionally provided with anode, and be additionally provided with negative electrode above the luminous organic material.
- A kind of 7. preparation method of display panel, for manufacturing the display panel as described in claim any one of 1-6, its feature It is, the preparation method includes：The first film layer is formed on underlay substrate；The hydrophobic layer of patterning is formed backwards to the one side of the underlay substrate in first film layer, wherein, the hydrophobic layer bag Include a plurality of the first hydrophobic bar extended in a first direction, and a plurality of edge extend perpendicular to the first direction it is second hydrophobic Bar, the first hydrophobic bar and the second hydrophobic bar are arranged in a crossed manner, and it is in array distribution that the display panel, which is divided into multiple, Pixel cell；Luminous organic material is formed in each pixel cell.
- 8. preparation method as claimed in claim 7, it is characterised in that first film layer contains fluorine material, described described The one side backwards to the underlay substrate of first film layer forms the hydrophobic layer of patterning, specifically includes：One side using the first film layer described in ultraviolet light backwards to the underlay substrate, wherein, in the ultraviolet light with being formed Have and be provided with the mask plate of patterning between the display panel of first film layer, and then make first film layer backwards to institute The one side of underlay substrate is stated by the ultraviolet light patterned, so that the fluorine material in first film layer moves to described One film layer forms the hydrophobic layer of patterning backwards to the one side of the underlay substrate, wherein, the pattern of the mask plate and institute The pattern for stating hydrophobic layer matches.
- 9. preparation method as claimed in claim 7, it is characterised in that described that the first film layer, tool are formed on underlay substrate Body includes：Hole injection layer is formed on underlay substrate.
- 10. preparation method as claimed in claim 7, it is characterised in that it is described formed in each pixel cell it is organic Luminescent material, specifically include：By inkjet printing methods, luminous organic material is printed in each pixel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710644089.9A CN107403828B (en) | 2017-07-31 | 2017-07-31 | Display panel and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710644089.9A CN107403828B (en) | 2017-07-31 | 2017-07-31 | Display panel and manufacturing method thereof |
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| CN107403828A true CN107403828A (en) | 2017-11-28 |
| CN107403828B CN107403828B (en) | 2020-04-28 |
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| CN201710644089.9A Active CN107403828B (en) | 2017-07-31 | 2017-07-31 | Display panel and manufacturing method thereof |
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| CN111200004A (en) * | 2020-02-27 | 2020-05-26 | 深圳市华星光电半导体显示技术有限公司 | Pixel structure, preparation method thereof and display panel |
| CN112116878A (en) * | 2020-09-24 | 2020-12-22 | Tcl华星光电技术有限公司 | Display panel, manufacturing method thereof and display device |
| WO2021092975A1 (en) * | 2019-11-11 | 2021-05-20 | 武汉华星光电半导体显示技术有限公司 | Display panel and manufacturing method therefor |
| CN113075830A (en) * | 2021-04-15 | 2021-07-06 | 合肥京东方卓印科技有限公司 | Magnetic handwriting screen and manufacturing method thereof |
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| CN107403828B (en) | 2020-04-28 |
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