CN107623083B - Array substrate, organic electroluminescent display panel and inkjet printing methods - Google Patents
Array substrate, organic electroluminescent display panel and inkjet printing methods Download PDFInfo
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Abstract
The invention discloses a kind of array substrate, organic electroluminescent display panel, display device and inkjet printing methods, due to being provided with the dummy electrode being arranged in a one-to-one correspondence with each anode layer, and are additionally provided with the reference line being correspondingly connected with each dummy electrode.In this way when spraying ink droplet on the anode layer using the method for inkjet printing, charge can be applied to dummy electrode by reference to line, keep dummy electrode opposite with the charge polarity of ink droplet institute band in corresponding spray head, the ink droplet in spray head is attracted on the anode layer for needing the pixel reached using the principle that the charges of different polarity attract each other, it is existing in the prior art since organic drop location deviates caused display colour contamination to solve the problems, such as.Also, voltage is provided to dummy electrode by reference to line, realizes that process is simple；And since dummy electrode and anode layer are mutually insulateds, the setting of dummy electrode and reference line will not have an impact the display for the oled panel being subsequently formed.
Description
Technical field
The present invention relates to field of display technology, espespecially a kind of array substrate, organic electroluminescent display panel, display device
And inkjet printing methods.
Background technique
Organic electroluminescent display panel (Organic light-emitting diodes, OLED) is that a kind of utilization has
The molding display device of machine material package, fast response time low with operating voltage, luminous efficiency are high, visual angle is wide and work
The advantages that temperature is wide, conducive to the lightening of display device, low-power consumption and curved design.
The prior art is for the organic film in OLED organic electroluminescence device, the general method system for using inkjet printing
It is standby.Organic ink droplet is sprayed on the anode layer of respective pixel using spray head, but in spraying process, organic drop location is very
It is easy to happen offset and organic ink droplet is caused to spray on the anode layer of non-predetermined pixel, to bring the risk of display colour contamination.
Summary of the invention
The embodiment of the present invention provides a kind of array substrate, organic electroluminescent display panel, display device and inkjet printing
Method, it is existing in the prior art since organic drop location deviates caused display colour contamination to solve the problems, such as.
A kind of array substrate provided in an embodiment of the present invention, including underlay substrate, are set on the underlay substrate and are in
The anode layer of multiple organic light emissive pixels of matrix arrangement, the dummy electrode being arranged in a one-to-one correspondence with each anode layer, and institute
State dummy electrode and the anode layer mutually insulated；
The reference line being correspondingly connected with each dummy electrode is additionally provided on the underlay substrate；Wherein,
The reference line be used for when spraying electrically charged ink droplet on the anode layer using the method for inkjet printing to
The dummy electrode provides charge.
Correspondingly, the embodiment of the invention also provides a kind of organic electroluminescent display panels, including the embodiment of the present invention
The array substrate of offer.
Correspondingly, the embodiment of the invention also provides a kind of display devices, including Organic Electricity provided in an embodiment of the present invention
Photoluminescence display panel.
Correspondingly, the embodiment of the invention also provides a kind of inkjet printing methods applied to above-mentioned array substrate, comprising:
Charge is provided to each reference line, and electrically charged ink droplet is sprayed on each anode layer using spray head；Its
In, the corresponding spray head of an anode layer, and the charge of institute's band on the corresponding dummy electrode of each anode layer
The polarity of the charge of ink droplet institute band in the spray head of the corresponding position of polarity is opposite.
The present invention has the beneficial effect that:
Above-mentioned array substrate, organic electroluminescent display panel, display device and ink-jet provided in an embodiment of the present invention are beaten
Impression method due to being provided with the dummy electrode being arranged in a one-to-one correspondence with each anode layer, and is additionally provided with corresponding with each dummy electrode
The reference line of connection.It, can be by reference to line to void in this way when spraying ink droplet on the anode layer using the method for inkjet printing
If electrode applies charge, make dummy electrode with the charge polarity of the ink droplet institute band in corresponding spray head on the contrary, using the charges of different polarity
The principle to attract each other is attracted to the ink droplet in spray head on the anode layer for needing the pixel reached, to solve the prior art
Present in due to organic drop location deviate caused by display colour contamination the problem of.Also, it is mentioned by reference to line to dummy electrode
Voltage supplied realizes that process is simple；And since dummy electrode and anode layer are mutually insulated, dummy electrode and reference line
Setting the display for the oled panel being subsequently formed will not be had an impact.
Detailed description of the invention
Fig. 1 is a kind of the schematic diagram of the section structure of array substrate provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the section structure of another array substrate provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of the section structure of another array substrate provided in an embodiment of the present invention；
Fig. 4 is the schematic diagram of the section structure of another array substrate provided in an embodiment of the present invention；
Fig. 5 is the schematic diagram of the section structure of another array substrate provided in an embodiment of the present invention；
Fig. 6 is the corresponding overlooking structure diagram of array substrate shown in fig. 5；
Fig. 7 is a kind of overlooking structure diagram of array substrate provided in an embodiment of the present invention；
Fig. 8 is the overlooking structure diagram of another array substrate provided in an embodiment of the present invention；
Fig. 9 is the overlooking structure diagram of another array substrate provided in an embodiment of the present invention；
Figure 10 is the overlooking structure diagram of another array substrate provided in an embodiment of the present invention；
Figure 11 is a kind of structural schematic diagram of organic electroluminescent display panel provided in an embodiment of the present invention；
Figure 12 is a kind of structural schematic diagram of display device provided in an embodiment of the present invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts all
Other embodiments shall fall within the protection scope of the present invention.
The shapes and sizes of each component do not reflect actual proportions in attached drawing, and purpose is schematically illustrate the content of present invention.
A kind of array substrate provided in an embodiment of the present invention, as shown in FIG. 1, FIG. 1 is one kind provided in an embodiment of the present invention
The schematic diagram of the section structure of array substrate；Including underlay substrate 01, it is set to arranged in arrays multiple on underlay substrate 01
The anode layer 02 of organic light emissive pixels, the dummy electrode 03 being arranged in a one-to-one correspondence with each anode layer 02, and dummy electrode 03 and sun
Pole 02 mutually insulated of layer；
The reference line (not regarding out in Fig. 1) being correspondingly connected with each dummy electrode 03 is additionally provided on underlay substrate 01；Wherein,
Reference line is used for when spraying electrically charged ink droplet 06 on anode layer 02 using the method for inkjet printing to illusory
Electrode 03 provides charge.
In array substrate provided in an embodiment of the present invention, due to being provided with the illusory electricity being arranged in a one-to-one correspondence with each anode layer
Pole, and it is additionally provided with the reference line being correspondingly connected with each dummy electrode.In this way when using inkjet printing method on the anode layer
When spraying ink droplet, charge can be applied to dummy electrode by reference to line, make dummy electrode and the ink droplet institute in corresponding spray head
The charge polarity of band using the principle that the charges of different polarity attract each other on the contrary, make the ink droplet in spray head be attracted to the picture for needing to reach
It is existing in the prior art since drop location deviates caused display colour contamination to solve the problems, such as on the anode layer of element.And
And voltage is provided to dummy electrode by reference to line, realize that process is simple；And since dummy electrode and anode layer are mutually insulateds
, therefore the setting of dummy electrode and reference line will not have an impact the display for the oled panel being subsequently formed.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in Figure 1, being also set up around anode layer 02
There is pixel confining layer 05, is limited so as to which the subsequent ink droplet 06 being sprayed on anode layer 02 is limited to pixel confining layer 05
In the range of.
In the specific implementation, in array substrate provided in an embodiment of the present invention, dummy electrode can be arranged with anode layer
In same layer, naturally it is also possible to be arranged in different layers, be not limited thereto.Dummy electrode and anode layer same layer are set separately below
It sets and is described in detail with the case where different layer setting.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in Figure 1, working as dummy electrode 03 and anode layer
When 02 different layer is arranged, dummy electrode 03 is between underlay substrate 01 and anode layer 02；
Insulating layer 04 is additionally provided between anode layer 02 and dummy electrode 03.Using the charge on dummy electrode 03 to electrification
The ink droplet 06 of lotus is attracted, to avoid in 06 positional shift of ink droplet to the anode layer 02 of adjacent pixel.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in Figure 1, when dummy electrode 03 is located at anode
When 02 lower section of layer, due to there is the presence of insulating layer 04 and anode layer 02 between dummy electrode 03 and ink droplet 06.Therefore, in order to enhance
Dummy electrode is to the attraction of ink droplet, optionally, in array substrate provided in an embodiment of the present invention, as shown in Fig. 2, Fig. 2 is
The schematic diagram of the section structure of another kind array substrate provided in an embodiment of the present invention；Anode layer 02 is corresponding with dummy electrode 03
Region has at least one groove V.To enhance dummy electrode 03 to the attraction of ink droplet.
In the specific implementation, in array substrate provided in an embodiment of the present invention, the depth of groove is deeper, strong dummy electrode
It is stronger to the attraction of ink droplet.Therefore, specifically, in array substrate provided in an embodiment of the present invention, as shown in figure 3, Fig. 3 is
The schematic diagram of the section structure of another array substrate provided in an embodiment of the present invention；The thickness of the depth penetration anode layer 02 of groove V
Degree.
Specifically, in array substrate provided in an embodiment of the present invention, when the thickness of the depth penetration anode layer 02 of groove V
When, the area of anode layer can be reduced, to reduce the light-emitting area of pixel.Therefore, in the specific implementation, it is contemplated that pixel light emission
Panel, in array substrate provided in an embodiment of the present invention, in each anode layer 02, total area coverage of groove V is less than or waits
In the 1/3 of the area coverage of anode layer 02.
Specifically, on the basis of the total area coverage of groove is certain, the quantity of groove is more, it is meant that the face of single groove
Product is smaller, and requirement of the area of groove to technique is just high.Therefore, on the basis of the total area coverage of groove is certain, in the present invention
In the array substrate that embodiment provides, as shown in figure 4, Fig. 4 is the section of another array substrate provided in an embodiment of the present invention
Structural schematic diagram；When dummy electrode 03 and the different layer of anode layer 02 are arranged, anode layer 02 is in region corresponding with dummy electrode 03
With a groove V, and dummy electrode 03 covers groove V in the orthographic projection of underlay substrate 01 in the orthographic projection of underlay substrate 01.
Specifically, when dummy electrode and anode layer same layer are arranged, in array substrate provided in an embodiment of the present invention, such as
Shown in Fig. 5 and Fig. 6, Fig. 5 is the schematic diagram of the section structure of another array substrate provided in an embodiment of the present invention, and Fig. 6 is Fig. 5 institute
The corresponding overlooking structure diagram of the array substrate shown；Dummy electrode 03 and 02 same layer of anode layer and setting is isolated, anode layer 02
For the ring structure for surrounding dummy electrode 03；
Array substrate further includes covering the insulation in the gap between dummy electrode 03 and dummy electrode 03 and anode layer 02
Layer 04, to keep dummy electrode 03 maximum to the attraction of ink droplet.
Specifically, in array substrate provided in an embodiment of the present invention, thus the light-emitting area of not excessive influence pixel,
The area of dummy electrode 03 is less than or equal to the 1/3 of the area of anode layer 02.
Above example carries out for being positional relationship and structure by dummy electrode in array substrate and anode layer
Illustrate.The setting of reference line is described in detail below.
In the specific implementation, in array substrate provided in an embodiment of the present invention, it is independent to can be each dummy electrode
One reference line is set, but reference line quantity can mostly reduce the pixel aperture ratio of array substrate.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in fig. 7, Fig. 7 provides for the embodiment of the present invention
A kind of array substrate overlooking structure diagram；Each column dummy electrode 03 along column direction arrangement respectively corresponds two references
Line line；Wherein,
In each column dummy electrode 03, all dummy electrodes 03 positioned at odd positions are correspondingly connected with one and prolong along column direction
The reference line line stretched, all dummy electrodes 03 positioned at even number position are correspondingly connected with the reference line extended along column direction
Line, and it is located at the reference line line that are correspondingly connected with of dummy electrode 03 of odd positions and the dummy electrode 03 that is located at even number position
The reference line line being correspondingly connected with is not identical；
And in the corresponding two reference line line of each column dummy electrode 03, the charge polarity on a reference line line is
Just, the charge polarity on another reference line line is negative.
Specifically, array substrate shown in Fig. 7 can not only make any two dummy electrode 03 adjacent along column direction
On charge polarity on the contrary, and the quantity of reference line line in array substrate can be greatly reduced.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in fig. 7, each column dummy electrode 03 is corresponding
Two reference line line be located at the two sides of the column dummy electrode 03.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in figure 8, Fig. 8 provides for the embodiment of the present invention
Another array substrate overlooking structure diagram；Along the adjacent two column dummy electrode 03 of column direction arrangement, wherein a column
In be located at odd positions dummy electrode 03 in another column positioned at even number position dummy electrode 03 connect positioned at it is adjacent two arrange
Same reference line line between dummy electrode 03.Such two column dummy electrode 03 shares a reference line line, not only can be with
The quantity of the reference line line of half is further decreased, but also any two dummy electrode 03 adjacent along line direction can be made
On charge polarity it is opposite.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in figure 9, Fig. 9 provides for the embodiment of the present invention
Another array substrate overlooking structure diagram；Along each column anode layer of column direction arrangement, same pixel color
The reference line line that the connection same of dummy electrode 03 corresponding to anode layer 02 extends along column direction, and different pixels color
The reference line line of the connection of dummy electrode 03 corresponding to anode layer 02 is not identical, is with tri- kinds of pixel colors of R, G and B in Fig. 9
Example is illustrated, but not limited to this.The quantity of reference line line, and same row dummy electrode 03 can be equally reduced in this way,
The dummy electrode 03 of different pixels color can be with different charges.
Specifically, in array substrate provided in an embodiment of the present invention, as shown in Figure 10, Figure 10 mentions for the embodiment of the present invention
The overlooking structure diagram of another array substrate supplied；The pixel color of any two anode layer 02 adjacent along line direction is not
It is identical, the charge polarity along the adjacent any two dummy electrode of line direction can be made opposite in this way；And/or along column direction phase
The pixel color of adjacent any two anode layer 02 is not identical, can make any two dummy electrode adjacent along column direction in this way
03 charge polarity is opposite.
Based on the same inventive concept, the embodiment of the invention also provides a kind of organic electroluminescent display panels, such as Figure 11
Shown, Figure 11 is a kind of structural schematic diagram of organic electroluminescent display panel provided in an embodiment of the present invention；Including the present invention
Any of the above-described kind of array substrate that embodiment provides.In the display panel, in addition to the OLED picture including anode layer in array substrate
Element 10, generally further includes grid line Gate, data line data, gate driving circuit 20 and data signal line driving circuit 30 etc..By
It is similar to a kind of aforementioned array substrate in the principle that the organic electroluminescent display panel solves the problems, such as, therefore the organic electroluminescence is sent out
The implementation of light display panel may refer to the implementation of aforementioned array substrate, and overlaps will not be repeated.
Based on the same inventive concept, the embodiment of the invention also provides a kind of display devices, including the embodiment of the present invention to mention
Any of the above-described kind of organic electroluminescent display panel supplied.The display device can be mobile phone as shown in figure 12, certainly may be used
Think any product having a display function such as tablet computer, television set, display, laptop, Digital Frame, navigator
Or component.The implementation of the display device may refer to the embodiment of above-mentioned organic electroluminescent display panel, repeat place no longer
It repeats.
Based on the same inventive concept, the embodiment of the invention also provides a kind of inkjet printings applied to above-mentioned array substrate
Method, comprising:
Charge is provided to each reference line, and electrically charged ink droplet is sprayed on each anode layer using spray head；Wherein, a sun
The corresponding spray head of pole layer, and on the corresponding dummy electrode of each anode layer the corresponding position of polarity of the charge of institute's band spray head
In ink droplet institute band charge polarity it is opposite.
The pole of the polarity of charge in this way on the corresponding dummy electrode of anode layer and the charge of ink droplet institute band in corresponding spray head
Property on the contrary, attract each other between opposite polarity charge, therefore even if anode layer and the contraposition of corresponding spray head occur it is some partially
It moves, appointing can also so be such that the ink droplet in each spray head is attracted on corresponding anode layer.
Specifically, in inkjet printing methods provided in an embodiment of the present invention, when each column anode arranged along column direction
In layer, the reference line that the connection same of dummy electrode corresponding to the anode layer of same pixel color extends along column direction, and not
With dummy electrode corresponding to the anode layer of pixel color connection reference line it is not identical when,
The charge polarity on reference line that dummy electrode corresponding to the anode layer of same pixel color is connected is identical.This
The polarity of the charge of the ink droplet institute band of sample same color is identical.
A kind of array substrate, organic electroluminescent display panel, display device and ink-jet provided in an embodiment of the present invention are beaten
Impression method due to being provided with the dummy electrode being arranged in a one-to-one correspondence with each anode layer, and is additionally provided with corresponding with each dummy electrode
The reference line of connection.It, can be by reference to line to void in this way when spraying ink droplet on the anode layer using the method for inkjet printing
If electrode applies charge, make dummy electrode with the charge polarity of the ink droplet institute band in corresponding spray head on the contrary, using the charges of different polarity
The principle to attract each other is attracted to the ink droplet in spray head on the anode layer for needing the pixel reached, to solve the prior art
Present in due to organic drop location deviate caused by display colour contamination the problem of.Also, it is mentioned by reference to line to dummy electrode
Voltage supplied realizes that process is simple；And since dummy electrode and anode layer are mutually insulated, dummy electrode and reference line
Setting the display for the oled panel being subsequently formed will not be had an impact.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (14)
1. a kind of array substrate, which is characterized in that including underlay substrate, be set to arranged in arrays on the underlay substrate
The anode layer of multiple organic light emissive pixels, the dummy electrode being arranged in a one-to-one correspondence with each anode layer, and the dummy electrode
With the anode layer mutually insulated；
The reference line being correspondingly connected with each dummy electrode is additionally provided on the underlay substrate；The reference line is used to work as and adopt
Charge is provided to the dummy electrode when spraying electrically charged ink droplet on the anode layer with the method for inkjet printing；
Wherein, the dummy electrode is between the underlay substrate and the anode layer, the anode layer and the illusory electricity
Insulating layer is additionally provided between pole, and the anode layer has at least one groove in region corresponding with the dummy electrode；
Alternatively,
The dummy electrode and the anode layer same layer and setting is isolated, the anode layer is the annular for surrounding the dummy electrode
Structure, the array substrate further include the gap covered between the dummy electrode and the dummy electrode and the anode layer
Insulating layer.
2. array substrate as described in claim 1, which is characterized in that the thickness of anode layer described in the depth penetration of the groove
Degree.
3. array substrate as claimed in claim 2, which is characterized in that in each anode layer, total covering of the groove
Area is less than or equal to the 1/3 of the area coverage of the anode layer.
4. array substrate as claimed in claim 3, which is characterized in that the anode layer is in area corresponding with the dummy electrode
Domain has a groove, and the dummy electrode covers the groove in the underlay substrate in the orthographic projection of the underlay substrate
Orthographic projection.
5. array substrate as described in claim 1, which is characterized in that the area of the dummy electrode is less than or equal to the anode
The 1/3 of the area of layer.
6. array substrate as described in any one in claim 1-5, which is characterized in that
Each column dummy electrode along column direction arrangement respectively corresponds two reference lines；Wherein,
In each column dummy electrode, all dummy electrodes positioned at odd positions are correspondingly connected with one and prolong along the column direction
The reference line stretched, all dummy electrodes positioned at even number position are correspondingly connected with the reference line extended along the column direction, and
The reference that the reference line being correspondingly connected with positioned at the dummy electrode of odd positions is correspondingly connected with the dummy electrode for being located at even number position
Line is not identical；
And in each corresponding two reference lines of the column dummy electrode, the charge polarity on a reference line is positive,
Charge polarity on another reference line is negative.
7. array substrate as claimed in claim 6, which is characterized in that each to arrange corresponding two ginsengs of the dummy electrode
Examine the two sides that line is located at the column dummy electrode.
8. array substrate as claimed in claim 7, which is characterized in that adjacent two column along column direction arrangement are described illusory
In electrode, wherein being located at the dummy electrode connection position for being located at even number position in the dummy electrode and another column of odd positions in a column
Same reference line between the adjacent two column dummy electrode.
9. array substrate as described in any one in claim 1-5, which is characterized in that
Along each column anode layer of column direction arrangement, the connection of dummy electrode corresponding to the anode layer of same pixel color
The reference line that same extends along the column direction, and the ginseng of the connection of dummy electrode corresponding to the anode layer of different pixels color
It is not identical to examine line.
10. array substrate as claimed in claim 9, which is characterized in that anode layer described in any two adjacent along line direction
Pixel color it is not identical and/or not identical along the pixel color of anode layer described in the adjacent any two of column direction.
11. a kind of organic electroluminescent display panel, which is characterized in that including such as described in any item arrays of claim 1-10
Substrate.
12. a kind of display device, which is characterized in that including organic electroluminescent display panel as claimed in claim 11.
13. a kind of inkjet printing methods applied to such as described in any item array substrates of claim 1-10, which is characterized in that
Include:
Charge is provided to each reference line, and electrically charged ink droplet is sprayed on each anode layer using spray head；Wherein, one
The corresponding spray head of a anode layer, and on the corresponding dummy electrode of each anode layer the polarity of the charge of institute's band with
The polarity of the charge of ink droplet institute band in the spray head of its corresponding position on the contrary, the anode layer with the dummy electrode pair
The region answered has at least one groove.
14. inkjet printing methods as claimed in claim 13, which is characterized in that when each column sun arranged along column direction
In the layer of pole, dummy electrode corresponding to the anode layer of same pixel color connects the reference that same extends along the column direction
Line, and dummy electrode corresponding to the anode layer of different pixels color connection reference line it is not identical when,
The charge polarity on reference line that dummy electrode corresponding to the anode layer of same pixel color is connected is identical.
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| US12017465B2 (en) | 2019-12-16 | 2024-06-25 | Samsung Display Co., Ltd. | Inkjet printing apparatus and method for aligning dipoles |
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| CN109148533B (en) * | 2018-08-21 | 2020-09-01 | 武汉华星光电半导体显示技术有限公司 | Organic light-emitting diode display |
| KR102616245B1 (en) | 2018-10-05 | 2023-12-21 | 삼성디스플레이 주식회사 | Display device |
| CN114665052A (en) * | 2022-03-22 | 2022-06-24 | 深圳市华星光电半导体显示技术有限公司 | Organic display panel manufacturing method and organic display panel |
| CN115513397A (en) * | 2022-08-18 | 2022-12-23 | Tcl华星光电技术有限公司 | Display panel, preparation method thereof and display terminal |
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| KR102206027B1 (en) * | 2014-10-06 | 2021-01-20 | 삼성전자주식회사 | Thin film fabricating apparatus and manufacturing method of orgarnic light emitting device using the same |
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