CN109119444A - A kind of display base plate and its manufacturing method - Google Patents
A kind of display base plate and its manufacturing method Download PDFInfo
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- CN109119444A CN109119444A CN201810932281.2A CN201810932281A CN109119444A CN 109119444 A CN109119444 A CN 109119444A CN 201810932281 A CN201810932281 A CN 201810932281A CN 109119444 A CN109119444 A CN 109119444A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/1201—Manufacture or treatment
Abstract
The invention discloses a kind of display base plates, the transistor array layer including underlay substrate and on underlay substrate, further include the pixel defining layer on transistor array layer and the first film layer in pixel defining layer；Side of the pixel defining layer far from underlay substrate is controllability surface, the property and arrangement mode of pixel defining layer interpolymer molecule are influenced by the electric field that first electrode generates, and then the controllability surface above first electrode is controlled in inkjet printing steps with hydrophily, there is hydrophobicity in dry baking procedure；First film layer includes multiple color lumps contacted with first surface；Display base plate of the invention using can automatically controlled surface hydrophilic and hydrophobic pixel defining layer, achieve the effect that patterning inkjet printing can be carried out without barricade, solve the problems, such as inkjet printing deviation and coffee ring effect；The invention also discloses a kind of manufacturing methods of display base plate.
Description
Technical field
The invention belongs to field of display technology, and in particular to a kind of display base plate and its manufacturing method.
Technical background
It is currently the epoch that display technology quickly alternates, OLED display technology becomes industrial hot spot, but cost is excessively high, yield
The problems such as low, is difficult to meet the needs of market, from the perspective of technology, mainly or caused by manufacture craft.Mesh
Before, OLED display panel is mainly FMM evaporation process (FMM, Fine Metal Mask, fine metal mask), but material use
The disadvantages of rate is low, uniformity is poor causes its cost high；And ink-jet printing process is a more efficient technology, has material
Expect utilization rate it is high, can be larger in area etc. advantages, Fig. 1 be the schematic diagram of existing ink-jet printing process.
When making pixel by ink-jet printing process, it is necessary to which (Bank) structure of barricade 11 is set on underlay substrate 01 to limit
Determine the flowing of ink.As shown in Fig. 2, general 11 height of barricade is about at 2 μm or so, and in order to avoid when printing because of adjacent pixel
Cross it is close, or printing dislocation and caused by between adjacent pixel ink 031 fusion phenomenon, barricade 11 must have certain width limitation
(normally about 25 μm or more).In this way, which visible area utilization rate is just locked, it is difficult to make the display of high-res.
In addition, coffee ring effect is a kind of common phenomenon in ink jet printing process, it will lead to the uneven heavy of material
Product, influences the resolution ratio of print pattern and the performance of prepared device.The reason is that the drop edge solvent due to ink 031 steams
It sends out rate and is greater than central evapn rate, drop internal is caused to generate flowing and carry the solute particles of suspension to drop edge,
And in marginal deposit at thicker cyclic annular dry film.And mitigate coffee ring effect mode first is that control drop evaporation behavior, make
Drop is gradually reduced with evaporation, rather than is only liquid level decline, and dry film thickness can be made to form more uniform distribution,
As shown in Figure 3.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of display base plate, reaching can be patterned without barricade
The effect of inkjet printing, and solve the problems, such as inkjet printing deviation and coffee ring effect, the present invention also provides a kind of displays
The manufacturing method of substrate.
Technical solution provided by the invention is as follows:
The invention discloses a kind of display base plates, the transistor array layer including underlay substrate and on underlay substrate,
The transistor array layer includes criss-cross scan line and data line, by scan line and data line intersects the multiple pictures limited
Plain unit, the interior first electrode equipped with thin film transistor (TFT) and connection thin film transistor (TFT) of each pixel unit；Further include:
Pixel defining layer on transistor array layer, side of the pixel defining layer far from transistor array layer are
Controllability surface, the controllability surface include the first surface above first electrode；Wherein, when first electrode input the
When one voltage, the first surface above the first electrode has hydrophily；When the first electrode inputs second voltage, institute
Stating the first surface above first electrode has hydrophobicity；The first voltage and the positive negativity of second voltage are opposite；
The first film layer in pixel defining layer, first film layer include multiple color lumps, the color lump and described the
The contact of one surface, each color lump spaced pixels definition layer are opposite with first electrode.
The invention also discloses a kind of display base plates, the transistor array including underlay substrate and on underlay substrate
Layer, the transistor array layer include criss-cross scan line and data line, by scan line and data line intersection limit it is more
A pixel unit, the interior first electrode equipped with thin film transistor (TFT) and connection thin film transistor (TFT) of each pixel unit；Further include:
Pixel defining layer on transistor array layer, side of the pixel defining layer far from transistor array layer are
Controllability surface, the controllability surface include the first surface above first electrode；
Multiple second electrodes in pixel defining layer, first electrode in each pixel unit and at least one second
Electrode is corresponding；Wherein, when the voltage for inputting first electrode is less than the voltage for inputting corresponding second electrode, first electricity
First surface above pole has hydrophily；When the voltage of input first electrode is greater than the voltage of the corresponding second electrode of input
When, the first surface above the first electrode has hydrophobicity；
The first film layer in pixel defining layer, first film layer include multiple color lumps, the color lump and described the
The contact of one surface, each color lump spaced pixels definition layer are opposite with first electrode.
Preferably, the controllability surface further includes the second surface in addition to first surface, and the second surface, which has, to be dredged
It is aqueous.
Preferably, the pixel defining layer includes at least one polymer molecule, and polymer molecule includes first end and the
Two ends, the controllability surface has hydrophily when the first end of polymer molecule and controllability surface contact, described controllable
Property surface polymer molecule second end and controllability surface contact when have hydrophobicity.
Preferably, the pixel defining layer includes at least one liquid crystal polymer molecule, the liquid crystal polymer molecule tool
There are phenyl ring and cyano chain.
The invention discloses a kind of manufacturing methods of display base plate, comprising the following steps:
Step 1: forming transistor array layer on underlay substrate, the transistor array layer includes criss-cross sweeps
It retouches line and data line, intersect the multiple pixel units limited by scan line and data line, it is brilliant to be equipped with film in each pixel unit
The first electrode of body pipe and connection thin film transistor (TFT)；
Step 2: forming pixel defining layer on transistor array layer, the pixel defining layer is far from transistor array layer
One side be controllability surface；Controllability surface includes the first surface above first electrode；Wherein, when the first electrode is defeated
When entering first voltage, the first surface above the first electrode has hydrophily；When the first electrode inputs second voltage
When, the first surface above the first electrode has hydrophobicity；The first voltage and the positive negativity of second voltage are opposite；Controllably
Property surface further include the second surface in addition to first surface, the second surface have hydrophobicity；
Step 3: first voltage is inputted to multiple first electrodes, to the first surface instillation ink.
Preferably, further include the 4th step after the third step；
Step 4: applying second voltage to multiple first electrodes, baking is dried to ink, ink is made to form color lump.
The invention also discloses a kind of manufacturing methods of display base plate, comprising the following steps:
Step 1: forming transistor array layer on underlay substrate, transistor array layer includes criss-cross scan line
Intersect the multiple pixel units limited with data line, by scan line and data line, is equipped with thin film transistor (TFT) in each pixel unit
With the first electrode of connection thin film transistor (TFT)；
Step 2: form pixel defining layer on transistor array layer, pixel defining layer far from transistor array layer one
Face is controllability surface；Controllability surface includes the first surface above first electrode；Controllability surface further includes except the first table
Second surface outside face, the second surface have hydrophobicity；
Step 3: form second electrode in pixel defining layer, first electrode in each pixel unit and at least one
Second electrode is corresponding；Wherein, when the voltage for inputting first electrode is less than the voltage for inputting corresponding second electrode, described the
First surface above one electrode has hydrophily；When the voltage of input first electrode is greater than the electricity of the corresponding second electrode of input
When pressure, the first surface above the first electrode has hydrophobicity；
4th step is to multiple first electrodes and second electrode input voltage, wherein the voltage of input first electrode is less than input
The voltage of corresponding second electrode, to the first surface instillation ink above the first electrode.
Preferably, further include the 5th step after the 4th step；
Step 5: to multiple first electrodes and second electrode input voltage, wherein the voltage of input first electrode is greater than defeated
Baking is dried to ink in the voltage for entering corresponding second electrode, and ink is made to form color lump
Compared with prior art, the present invention can bring it is at least one of following the utility model has the advantages that
1, using can automatically controlled surface hydrophilic and hydrophobic pixel defining layer, reach without barricade can carry out patterning ink-jet beats
The effect of print；
2, the first surface of pixel defining layer has hydrophily in inkjet printing steps, and it is inclined to efficiently solve inkjet printing
The problem of difference；
3, the first surface of pixel defining layer has hydrophobicity in dry baking procedure, efficiently solves coffee ring effect
The problem of.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, the present invention is given furtherly
It is bright.
Fig. 1 is the schematic diagram of existing ink-jet printing process；
Fig. 2 is the schematic diagram of barrier wall structure in existing display base plate；
Fig. 3 is the schematic diagram for controlling drop evaporation behavior to mitigate coffee ring effect；
Fig. 4 is that the invention shows the structural schematic diagrams of substrate；
The schematic diagram that Fig. 5 automatically moves for ink after present invention generation inkjet printing deviation；
Fig. 6 is the structural schematic diagram of display base plate in another embodiment of the present invention.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, Detailed description of the invention will be compareed below
A specific embodiment of the invention.It should be evident that drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, there is identical structure or function in some figures so that simplified form is easy to understand
Component only symbolically depicts one of those, or has only marked one of those.Herein, "one" is not only indicated
" only this ", can also indicate the situation of " more than one ".
The invention shows the structure of substrate as shown in figure 4, including underlay substrate 01, the transistor on underlay substrate 01
Array layer (not shown) and the pixel defining layer of covering transistor array layer 02；Transistor array layer includes criss-cross scanning
Line and data line intersect the multiple pixel units limited by scan line and data line, are equipped with film crystal in each pixel unit
It manages (TFT) and connects the first electrode (not shown) of thin film transistor (TFT).Display base plate further includes being located in pixel defining layer 02
First film layer, the ink 031 on upper surface of first film layer by being dropped in pixel defining layer 02 are formed through dry baking.
Due to 031 fusion phenomenon of ink between the precision and adjacent pixel of ink jet printing, each first electrode is in underlay substrate 01
On projection between it is spaced apart.Side of the pixel defining layer 02 far from transistor array layer is controllability surface, and pixel is fixed
The property and arrangement mode of adopted layer interpolymer molecule are influenced by electric field, and then control the controllability surface above the first electrode
There is hydrophily in inkjet printing steps, there is hydrophobicity in dry baking procedure, reach without barricade (Bank)
The effect for carrying out patterning inkjet printing, promotes the resolution of display base plate.
Embodiment 1:
As shown in figure 4, the controllability surface of pixel defining layer 02 includes first surface 021 above first electrode and except the
Second surface 022 outside one surface 021, wherein projection and first electrode of the first surface 021 on underlay substrate 01 are in substrate
Projection on substrate 01 is overlapped, i.e. first surface 021 and first electrode spaced pixels definition layer 02 and opposite, second surface 022
For remaining region on controllability surface.
It include one or more polymer molecules in pixel defining layer 02, polymer molecule includes first end and second end,
When the first end of polymer molecule and controllability surface contact, controllability surface has hydrophily, when the of polymer molecule
When two ends and controllability surface contact, controllability surface has hydrophobicity.
First surface 021 when the first electrode in some pixel unit inputs first voltage, above the first electrode
For hydrophilic surface.The first table when the first electrode in some pixel unit inputs second voltage, above the first electrode
Face 021 is hydrophobic surface, i.e., above-mentioned pixel defining layer 02 be it is a kind of can automatically controlled surface hydrophilic and hydrophobic thin polymer film.Its
In, first voltage and the positive negativity of second voltage are opposite.
Such as: the first voltage of first electrode be+5V, first electrode be formed by the first electric field have referred to by first electrode
To the electric field line of first surface 021, the polymer molecule in pixel defining layer 02 rearranges under the first electric field, makes first end
It is contacted with first surface 021, the first surface 021 above the first electrode is hydrophilic surface；The second voltage of first electrode
For -5V, first electrode, which is formed by the second electric field, has the electric field line that first electrode is directed toward by first surface 021, pixel definition
Polymer molecule in layer 02 rearranges under the second electric field, contacts second end with first surface 021, makes the first electrode
The first surface 021 of top is hydrophobic surface.
Since second surface 022 is influenced almost without by first electrode, second surface 022 maintains hydrophobicity always.
But it should be recognized that the hydrophobe characteristic of 022 intersection of first surface 021 and second surface may be in since electric field influences
Even transition.
When the display base plate in the present embodiment is used as the color membrane substrates of display, the first film layer includes multiple discrete colors
Block, each color lump are directly contacted with the first surface 021 of pixel defining layer 02, and spaced pixels definition layer 02 and first electrode phase
Right, color lump is formed by the ink 031 being dropped on controllability surface through dry baking.First electrode can rounded, rectangle or circle
The various shapes such as angular moment shape define the shape and arrangement of color lump by the shape and arrangement of first electrode.
Preferably, chromatograph includes the first color lump, the second color lump, third color lump, and the first color lump is by nozzle on controllability surface
It is formed after upper 031 re-dry of instillation red ink baking, the second color lump instills green ink 031 by nozzle on controllability surface
It is formed after re-dry baking, third color lump is formed after instilling the baking of 031 re-dry of blue ink on controllability surface by nozzle.
It is first voltage by the voltage of thin film transistor (TFT) control section first electrode when carrying out inkjet printing, makes the
Controllability surface above one electrode has hydrophily；Remaining controllability surface has hydrophobicity.As shown in figure 5, when spraying
When certain deviation occurs for ink print, part ink 031 is fallen in except first surface 021 defined by first electrode, due to cohesion
The factors such as power, surface tension, ink 031 are automatically moved to hydrophilic first surface 021, reach high-precision printing.
When baking is dried to ink 031, the voltage of first electrode is adjusted to second voltage, above first electrode
Controllability surface is changed into hydrophobicity by hydrophily, mitigates ink 031 to the adhesive force of substrate, to control the evaporation of ink 031
Behavior, as shown in figure 3, drop is gradually reduced with evaporation, the film thickness after making drying forms more uniform distribution, mitigates coffee
The adverse effect of coffee toroidal effect.
The manufacturing method of display base plate in the present embodiment, comprising the following steps:
Step 1: forming transistor array layer on underlay substrate 01, transistor array layer includes criss-cross scanning
Line and data line intersect the multiple pixel units limited by scan line and data line, are equipped with film crystal in each pixel unit
The first electrode of pipe and connection thin film transistor (TFT)；
Step 2: forming pixel defining layer 02 on transistor array layer, pixel defining layer 02 is far from transistor array layer
One side be controllability surface；Controllability surface includes the first surface 021 above first electrode, i.e. first surface 021 is serving as a contrast
Projection on substrate 01 is overlapped with projection of the first electrode on underlay substrate 01；Wherein, when the first electricity of first electrode input
When pressure, the first surface 021 above the first electrode has hydrophily；When first electrode inputs second voltage, first electricity
First surface 021 above pole has hydrophobicity；First voltage and the positive negativity of second voltage are opposite；Controllability surface further includes removing
Second surface 022 outside first surface 021, second surface 022 have hydrophobicity；
Step 3: applying first voltage to multiple first electrodes, there is the first surface 021 above those first electrodes
Hydrophily, to the first surface instillation ink 031；
Step 4: the voltage of the above-mentioned multiple first electrodes of adjustment makes first above those first electrodes to second voltage
Surface 021 has hydrophobicity, and baking is dried to ink 031, and ink 031 is made to form color lump.
Wherein, the instillation of ink 031 can be needed subregion to carry out by processing procedure in third step, can also be by 031 type of ink
Difference instils step by step.
Embodiment 2:
On the basis of embodiment 1, pixel defining layer 02 is specifically a kind of liquid crystal polymer film in the present embodiment,
In liquid crystal polymer molecule have phenyl ring and cyano chain so that the first end of liquid crystal polymer molecule sagittal axis have hydrophily,
The second end of sagittal axis has hydrophobicity.
As shown in fig. 6, display base plate further includes the second electrode 041 in pixel defining layer 02, each pixel unit
Interior first electrode is corresponding at least one second electrode 041.Electricity is applied to first electrode (not shown) and second electrode 041
Pressure makes the electric field that predetermined direction is formed in pixel defining layer 02, is directed toward by changing electric field line direction change liquid crystal sagittal axis, switching
The terminal groups contacted with above-mentioned controllability surface, and then change the hydrophobe characteristic of the first surface 021 above the first electrode.
When the voltage for inputting first electrode is less than the voltage for inputting corresponding second electrode 041, in pixel defining layer 02
The first electric field generated has the electric field line that first electrode is directed toward by second electrode 041, the cyano link of liquid crystal polymer molecule
Controllability surface is touched, the first surface 021 above first electrode has hydrophily；When the voltage of input first electrode is greater than input
When the voltage of corresponding second electrode 041, the second electric field generated in pixel defining layer 02, which has, is directed toward second by first electrode
The electric field line of electrode 041, the phenyl ring face contact controllability surface of liquid crystal polymer molecule, the first surface above first electrode
021 has hydrophobicity.
It should be noted that the specific form of electric field line is by first electrode and second electrode in the first electric field and the second electric field
The factors such as the voltage between 041 shape, first electrode and second electrode 041 determine.
Specifically, each second electrode 041 is made of the conductive material around first surface 021, such as second electrode 041
It can be in various shapes such as annulus or rectangle frames.When carrying out inkjet printing, ink 031 is fallen in defined by annulus or rectangle frame
In portion region.Pixel defining layer 02 is equipped with 041 line of criss-cross first electrode line and second electrode, and by first electrode line
The second pixel unit of rectangular arrangement is defined with 041 line of second electrode intersection.Second is equipped in each second pixel unit
Thin film transistor (TFT) and second electrode 041, first electrode line and second electrode line pass through the second thin film transistor (TFT) to second electrode 041
Apply voltage.Since the projection of first electrode line, second electrode line, the second thin film transistor (TFT) on underlay substrate 01 can be distinguished
Chong Die with the projection of scan line, data line, thin film transistor (TFT) on underlay substrate 01 in transistor array layer, therefore, this sets
Meter will not reduce the resolution or aperture opening ratio of display base plate.
The manufacturing method of display base plate in the present embodiment, comprising the following steps:
Step 1: forming transistor array layer on underlay substrate 01, transistor array layer includes criss-cross scanning
Line and data line intersect the multiple pixel units limited by scan line and data line, are equipped with film crystal in each pixel unit
The first electrode of pipe and connection thin film transistor (TFT)；
Step 2: forming pixel defining layer 02 on transistor array layer, pixel defining layer 02 is far from transistor array layer
One side be controllability surface；Controllability surface includes the first surface 021 above first electrode；Controllability surface further includes removing
Second surface 022 outside first surface 021, second surface 022 have hydrophobicity；Preferably, pixel defining layer 02 includes one kind
Or plurality of liquid crystals polymer molecule；
Step 3: form second electrode 041 in pixel defining layer 02, the first electrode in each pixel unit at least
One second electrode 041 is corresponding；Wherein, when the voltage of input first electrode is less than the electricity of the corresponding second electrode 041 of input
When pressure, the first surface 021 above first electrode has hydrophily；Corresponding the is inputted when the voltage of input first electrode is greater than
When the voltage of two electrodes 041, the first surface 021 above first electrode has hydrophobicity；
Step 4: applying voltage to multiple first electrodes and second electrode 041, wherein the voltage of input first electrode is less than
The voltage for inputting corresponding second electrode 041, to the 021 instillation ink 031 of first surface above those first electrodes；
Step 5: applying voltage to multiple first electrodes and second electrode 041, wherein the voltage of input first electrode is greater than
Baking is dried to ink 031 in the voltage for inputting corresponding second electrode 041, and ink 031 is made to form color lump.
Display base plate of the invention include can automatically controlled surface hydrophilic and hydrophobic pixel defining layer 02, reach without barricade
The effect of patterning inkjet printing is carried out, and the first surface 021 of pixel defining layer 02 is in inkjet printing and dry baking step
There is different surface hydrophilic and hydrophobics in rapid, solve the problems, such as inkjet printing deviation and coffee ring effect, the present invention is also
Disclose the manufacturing method of corresponding display base plate.
It should be noted that the above is only a preferred embodiment of the present invention, but the present invention is not limited to above-mentioned
Detail in embodiment, it is noted that for those skilled in the art, in technology of the invention
In conception range, various improvements and modifications may be made without departing from the principle of the present invention, to technology of the invention
Scheme carries out a variety of equivalents, these are improved, retouching and equivalents also should be regarded as protection scope of the present invention.
Claims (9)
1. a kind of display base plate, the transistor array layer including underlay substrate and on underlay substrate, the transistor array
Layer intersects the multiple pixel units limited, each picture including criss-cross scan line and data line, by scan line and data line
First electrode in plain unit equipped with thin film transistor (TFT) and connection thin film transistor (TFT)；It is characterized by further comprising:
Pixel defining layer on transistor array layer, side of the pixel defining layer far from transistor array layer is controllable
Property surface, the controllability surface includes the first surface above first electrode；Wherein, when the first electricity of first electrode input
When pressure, the first surface above the first electrode has hydrophily；When the first electrode inputs second voltage, described the
First surface above one electrode has hydrophobicity；The first voltage and the positive negativity of second voltage are opposite；
The first film layer in pixel defining layer, first film layer include multiple color lumps, the color lump and first table
Face contact, each color lump spaced pixels definition layer are opposite with first electrode.
2. a kind of display base plate, the transistor array layer including underlay substrate and on underlay substrate, the transistor array
Layer intersects the multiple pixel units limited, each picture including criss-cross scan line and data line, by scan line and data line
First electrode in plain unit equipped with thin film transistor (TFT) and connection thin film transistor (TFT)；It is characterized by further comprising:
Pixel defining layer on transistor array layer, side of the pixel defining layer far from transistor array layer is controllable
Property surface, the controllability surface includes the first surface above first electrode；
Multiple second electrodes in pixel defining layer, first electrode and at least one second electrode in each pixel unit
It is corresponding；Wherein, when the voltage for inputting first electrode is less than the voltage for inputting corresponding second electrode, in the first electrode
The first surface of side has hydrophily；When the voltage for inputting first electrode is greater than the voltage for inputting corresponding second electrode, institute
Stating the first surface above first electrode has hydrophobicity；
The first film layer in pixel defining layer, first film layer include multiple color lumps, the color lump and first table
Face contact, each color lump spaced pixels definition layer are opposite with first electrode.
3. display base plate according to claim 1 or 2, it is characterised in that:
The controllability surface further includes the second surface in addition to first surface, and the second surface has hydrophobicity.
4. display base plate according to claim 1 or 2, it is characterised in that:
The pixel defining layer includes at least one polymer molecule, and polymer molecule includes first end and second end, it is described can
Control property surface has hydrophily when the first end of polymer molecule and controllability surface contact, and the controllability surface is polymerizeing
There is hydrophobicity when the second end of object molecule and controllability surface contact.
5. display base plate according to claim 2, it is characterised in that:
The pixel defining layer includes at least one liquid crystal polymer molecule, and the liquid crystal polymer molecule has phenyl ring and cyano
Chain.
6. a kind of manufacturing method of display base plate, which comprises the following steps:
Step 1: forming transistor array layer on underlay substrate, the transistor array layer includes criss-cross scan line
Intersect the multiple pixel units limited with data line, by scan line and data line, is equipped with thin film transistor (TFT) in each pixel unit
With the first electrode of connection thin film transistor (TFT)；
Step 2: form pixel defining layer on transistor array layer, the pixel defining layer far from transistor array layer one
Face is controllability surface；Controllability surface includes the first surface above first electrode；Wherein, when first electrode input the
When one voltage, the first surface above the first electrode has hydrophily；When the first electrode inputs second voltage, institute
Stating the first surface above first electrode has hydrophobicity；The first voltage and the positive negativity of second voltage are opposite；Controllability table
Face further includes the second surface in addition to first surface, and the second surface has hydrophobicity；
Step 3: first voltage is inputted to multiple first electrodes, to the first surface instillation ink.
7. the manufacturing method of display base plate according to claim 6, it is characterised in that: after further including the third step
4th step；
Step 4: applying second voltage to multiple first electrodes, baking is dried to ink, ink is made to form color lump.
8. a kind of manufacturing method of display base plate, which comprises the following steps:
Step 1: forming transistor array layer on underlay substrate, transistor array layer includes criss-cross scan line sum number
Intersect the multiple pixel units limited according to line, by scan line and data line, is equipped with thin film transistor (TFT) and company in each pixel unit
Connect the first electrode of thin film transistor (TFT)；
Step 2: forming pixel defining layer on transistor array layer, one side of the pixel defining layer far from transistor array layer is
Controllability surface；Controllability surface includes the first surface above first electrode；Controllability surface further includes in addition to first surface
Second surface, the second surface have hydrophobicity；
Step 3: form second electrode in pixel defining layer, the first electrode in each pixel unit and at least one second
Electrode is corresponding；Wherein, when the voltage for inputting first electrode is less than the voltage for inputting corresponding second electrode, first electricity
First surface above pole has hydrophily；When the voltage of input first electrode is greater than the voltage of the corresponding second electrode of input
When, the first surface above the first electrode has hydrophobicity；
4th step corresponds to multiple first electrodes and second electrode input voltage wherein the voltage of input first electrode is less than input
Second electrode voltage, to the first surface instillation ink above the first electrode.
9. the manufacturing method of display base plate according to claim 8, it is characterised in that: after further including the 4th step
5th step；
Step 5: to multiple first electrodes and second electrode input voltage, wherein the voltage of input first electrode is greater than input pair
Baking is dried to ink in the voltage for the second electrode answered, and ink is made to form color lump.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111223901A (en) * | 2019-11-29 | 2020-06-02 | 云谷（固安）科技有限公司 | Display panel and preparation method thereof |
| WO2022126562A1 (en) * | 2020-12-17 | 2022-06-23 | 京东方科技集团股份有限公司 | Quantum dot light-emitting device, display apparatus, and manufacturing method |
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| CN109119444B (en) | 2020-08-04 |
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