CN111490072A - Display device and manufacturing method thereof - Google Patents
Display device and manufacturing method thereof Download PDFInfo
- Publication number
- CN111490072A CN111490072A CN201910438356.6A CN201910438356A CN111490072A CN 111490072 A CN111490072 A CN 111490072A CN 201910438356 A CN201910438356 A CN 201910438356A CN 111490072 A CN111490072 A CN 111490072A
- Authority
- CN
- China
- Prior art keywords
- pixel
- layer
- pits
- display device
- ink
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
- H10K71/10—Deposition of organic active material
- H10K71/12—Deposition of organic active material using liquid deposition, e.g. spin coating
- H10K71/13—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing
- H10K71/135—Deposition of organic active material using liquid deposition, e.g. spin coating using printing techniques, e.g. ink-jet printing or screen printing using ink-jet printing
Abstract
The present invention relates to a display device and a method of manufacturing the same, the display device including: a substrate; the pixel defining layer is arranged on the substrate, a plurality of pixel pits are formed in the pixel defining layer, and a first shunt groove is formed between at least two adjacent pixel pits; a first functional layer arranged in the pixel pits and a bridging structure arranged in the first shunting groove, wherein the bridging structure is connected with the first functional layers in two adjacent pixel pits; a repair bump disposed on the bridging structure; and the second functional layer is arranged in the pixel pit and at least comprises a light-emitting layer. The display device has low probability of color mixing of the middle pixels and high product yield.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display device and a manufacturing method thereof.
Background
Organic light emitting diodes (O L ED) and Q L ED have attracted attention as next generation display technologies in recent years due to their advantages of wide color gamut, high contrast, rapid response, large viewing angle, low power consumption, etc. organic light emitting diodes have a structure including an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and a cathode, among which the hole injection layer, the hole transport layer, and the light emitting layer can be prepared by an ink jet printing method in addition to a conventional evaporation method.
In the ink-jet printing, an organic material is dissolved in an organic solvent to prepare ink, and then the ink is accurately deposited in each pixel pit surrounded by a pixel definition layer in an ink-jet printing mode. After deposition, drying under reduced pressure to completely volatilize the organic solvent and only leave a film formed by the organic material, and then baking the film to finish the preparation of a functional layer. Then, on the basis of this layer, inkjet printing, drying under reduced pressure, and baking are performed again to prepare the next functional layer until the hole injection layer, the hole transport layer, and the light-emitting layer are all prepared.
With the increasing requirements for the resolution of display devices, the density of pixels is higher and higher, and the design of pixel pits is smaller and smaller. When a high-resolution display panel is manufactured by inkjet printing, due to high pixel density, accidental offset of ink drop or excessive volume of individual ink drops, ink in adjacent pixel pits is overlapped together to form bridging due to ink overflowing out of the pixel pits, and after bridging defects occur, even after drying and baking under reduced pressure, thin films (hole injection layers or hole transport layers) in the two pixel pits which are bridged are continuous, such as a bridging structure 01 shown in fig. 1. Therefore, even if the ink droplet volume and the position accuracy are not abnormal during the ink jet printing of the next light emitting layer, the ink of the layer still forms the bridging 02 on the bridging structure 01, and forms a continuous film after drying, thereby causing the pixel color mixing of the light emitting layer.
Disclosure of Invention
In view of this, it is necessary to provide a display device with a low probability of pixel color mixing.
A display device, comprising:
a substrate;
the pixel defining layer is arranged on the substrate, a plurality of pixel pits are formed in the pixel defining layer, and a shunting groove is formed between at least two adjacent pixel pits;
the bridging structure is arranged in the first functional layer in the pixel pits and the shunting grooves and is connected with the first functional layers in two adjacent pixel pits;
a repair bump disposed on the bridging structure;
and the second functional layer is arranged in the pixel pit and at least comprises a light-emitting layer.
According to the display device, the first shunting grooves are formed between the adjacent pixel pits and used for containing the functional layer ink overflowing from the pixel pits, the repairing bulges are arranged on the bridging structure formed by the overflowing functional layer ink, and when the second functional layer ink containing the light-emitting layer is printed in the pixel pits, the repairing bulges can prevent the bridging defect from being continuously formed on the bridging structure, so that the effect of repairing the bridging defect is achieved, the probability of color mixing among pixels with different colors in the light-emitting layer can be effectively reduced, and the product yield of the display device is improved.
In one embodiment, a plurality of the pixel pits are distributed in an array, and the first shunt groove is arranged between two adjacent pixel pits in each row of pixel pits; and the extending direction of the first shunting grooves is the same as the column direction of the array distribution, and the size of the pixel pits in the column direction is larger than that of the pixel pits in the row direction.
In one embodiment, the opening of the first shunt groove is the same size as the pixel pit in the column direction.
In one embodiment, the opening width of the first shunt groove is greater than or equal to 5 μm, and the opening width of the first shunt groove is 40-60% of the distance between two adjacent pixel pits; and/or the depth of the first shunt groove is greater than or equal to 200nm, and the depth of the first shunt groove is 20-35% of the height of the pixel defining layer.
In one embodiment, a second shunt groove is arranged between two adjacent pixel pits in each row of pixel pits; and the extending direction of the second shunting grooves is the same as the row direction of the array distribution.
In one embodiment, a surface layer of the pixel defining layer away from the substrate is a hydrophobic surface layer, and the repairing protrusion is a hydrophobic protrusion.
In one embodiment, the repair protrusion protrudes from the upper surface of the pixel defining layer.
Another object of the present invention is to provide a method for manufacturing a display device, comprising the steps of:
s1, providing a substrate, forming a pixel definition layer on the substrate, wherein the pixel definition layer is provided with a plurality of pixel pits, and a first shunt groove is arranged between at least two adjacent pixel pits;
s2, printing first functional layer ink in the pixel pits of the pixel definition layer, and forming a first functional layer after drying;
s3, if a bridging structure connected with the first functional layers in the two adjacent pixel pits is formed in the first shunting grooves, depositing repair material ink on the formed bridging structure, and drying to form repair bulges;
and S4, forming a second functional layer including a light-emitting layer in the pixel pit on the pixel definition layer to obtain the display device. In one embodiment, the shrinkage rate of the repair material ink is less than or equal to 10%.
In one embodiment, a surface layer of the pixel defining layer away from the substrate is a hydrophobic surface layer, and the repair ink is at least one selected from a group consisting of a 4-methyl styrene monomer, a vinyl pyrrolidone monomer, and a methyl methacrylate monomer.
According to the manufacturing method of the display device, the shunting grooves are formed between the adjacent pixel pits, functional layer ink overflowing from the pixel pits can be accommodated when the functional layer ink is printed, the bridging structure is formed after drying, then the repairing material ink is deposited on the bridging structure in the shunting grooves, and the repairing bulges are formed after drying, so that when the second functional layer ink containing the luminescent layer is printed in the pixel pits, the repairing bulges can prevent the bridging defect from being continuously formed on the bridging structure, the effect of repairing the bridging defect is achieved, the probability of color mixing between different color pixels in the luminescent layer can be effectively reduced, and the technological stability of ink jet printing and the product yield of the display device are improved; in addition, the method does not need additional equipment, and the material cost is relatively low.
Drawings
FIG. 1 is a schematic diagram of a bridging defect formed when a display device is printed by a conventional method;
FIG. 2 is a diagram illustrating a step S1 of a method for fabricating a display device according to the present invention;
FIG. 3 is a top view of a pixel defining layer of a display device according to the present invention;
FIG. 4 is a top view of a pixel defining layer of another display device according to the present invention;
FIG. 5 is a diagram illustrating a step S2 of a method for fabricating a display device according to the present invention;
FIG. 6 is a diagram illustrating a step S3 of a method for fabricating a display device according to the present invention;
FIG. 7 is a schematic diagram of step S4 of a method for fabricating a display device according to the present invention;
fig. 8 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
When the hole injection layer and/or the hole transport layer are/is bridged to form a continuous thin film in the inkjet printing of the display device, the light emitting layer formed thereon may also be bridged to form a bridged structure. The reason for this is that the bridging structure changes the hydrophilic and hydrophobic properties of the pixel defining layer, and reduces the ink holding capacity of the pixel pits and the restriction force on the ink flow. Generally, the functional layer ink and the lower film thereof are wetted, so that the ink can be better spread in the pixel pits, can completely cover the pixel pits, and forms a film with uniform thickness; the ink is non-wetting with the upper surface of the pixel defining layer away from the substrate, and a larger contact angle can be formed, so that more ink can be accommodated and the flow of ink in the pixel pits can be limited. However, as shown in fig. 1, when the upper surface of the pixel defining layer is covered by the film after the ink is dried to form the bridging structure 01, a contact angle between the bridging structure 01 and the ink of the next functional layer is significantly reduced, which results in a decrease in the ink containing capability of the pixel pit and a decrease in the restriction on the ink flow, and thus, the defect that the ink continues to overflow when the ink of the next functional layer is printed, and the bridging 02 is formed again is caused. The bridging defect not only can influence the film thickness uniformity and morphology of a formed film, reduces the luminous efficiency of a device and causes color coordinate offset and poor color rendering, but also can directly cause pixel color mixing due to the bridging defect of the luminous layer, and seriously influences the process stability and the product yield of the ink jet printing display device.
Bridging defects of the light-emitting layer are generally caused by bridging defects of the hole injection layer and the hole transport layer, so that if the bridging defects of the hole injection layer and the hole transport layer can be timely repaired, the number of the bridging defects of the final light-emitting layer can be remarkably reduced.
An embodiment of the present invention provides a method for manufacturing a printed display device, including the following steps S1 to S4.
S1, referring to fig. 2, a substrate 10 is provided, and a pixel defining layer 20 is formed on the substrate 10.
As shown in fig. 2 to 3, the pixel defining layer 20 is formed with a plurality of pixel pits 22, and at least a first shunting groove 23 is formed between two adjacent pixel pits.
The substrate 10 is provided with a TFT driving array and a first electrode, and the first electrode is exposed in the pixel pit 22 when the pixel defining layer 20 is formed.
Specifically, the pixel defining layer 20 may simultaneously form the pixel pits 22 and the first shunting grooves 23 using a nanoimprint technique, an etching process, or the like; it is also possible to deposit the pixel defining layer 20 first and then etch the pixel defining layer 20 to form the pixel pits 22 and the first shunting grooves 23.
In an embodiment, please refer to fig. 3, the pixel pits are distributed in an array, and a first shunting groove 23 is disposed between two adjacent pixel pits 22 in each row of pixel pits; and the extending direction of the first shunting grooves 23 is the same as the column direction of the pixel pit array distribution, and the size of the pixel pits in the column direction is larger than that of the pixel pits in the row direction.
Thus, the first shunting grooves 23 are formed between two adjacent pixel pits 22 in the column direction, and when functional layer ink is printed, ink overflowing from the pixel pits 22 can be fully accommodated. Specifically, the opening length of the first shunt groove 23 is the same as the size of the pixel pit 22 in the column direction, that is, the opening length of the first shunt groove 23 is the same as the length of the longer side of the pixel pit 22. The opening width of the first shunt groove 23 is greater than or equal to 5 μm, and the opening width of the first shunt groove 23 is 40% -60% of the distance between two adjacent pixel pits of the first shunt groove 23.
The depth of the first shunt groove 23 is greater than or equal to 200nm, and the depth of the first shunt groove 23 is 20% -35% of the height of the pixel defining layer 20.
Thus, by designing the size of the first shunting groove 23, the first shunting groove 23 does not penetrate through the pixel defining layer 20, so that the functional layer ink flowing into the first shunting groove 23 does not contact with the lower substrate 10 or the TFT driving array or the first electrode on the substrate 10, and can sufficiently contain the functional layer ink overflowing during printing, and at the same time, can facilitate the subsequent formation of the repair protrusion in the first shunting groove 23.
It is understood that the cross-section of the first shunting groove 23 may have a rectangular shape, an inverted trapezoidal shape, a U-shape, etc.
In this embodiment, the first shunting groove 23 has a rectangular cross-section.
In one embodiment, as shown in fig. 4, a second shunt groove 24 is disposed between two adjacent pixel pits in each row of pixel pits, and the extending direction of the second shunt groove 24 is the same as the row direction of the array distribution.
It can be understood that, although the distance between the adjacent pixel pits arranged in the row direction is relatively long, when the functional layer is printed, the bridging defect generally does not occur, and the pixels printed in the pixel pits arranged in the row direction (namely the pixel pits adjacent to the short side) are generally the same-color pixels, even if the bridging defect occurs, color mixing does not occur, but the bridging at the position has certain influence on the subsequent film forming appearance, so that the color of the device is poor, therefore, between the adjacent pixel pits, the first shunting grooves and the second shunting grooves are respectively arranged in the column direction and the row direction for accommodating the ink overflowing during printing, and then the formed bridging defect is repaired, so that the effects of reducing the occurrence of pixel color mixing and color developing failure can be simultaneously achieved, and the product yield of the display device is improved. Specifically, the opening length of the second shunt groove 24 extending in the same direction as the array distribution row direction is the same as the size of the pixel pits in the row direction, that is, the opening length of the second shunt groove 24 is the same as the length of the shorter side of the pixel pit. The opening width of the second shunt groove 24 is 20% to 40% of the interval between two adjacent pixel pits of the second shunt groove 24. The depth of the second shunt groove 24 is greater than or equal to 200nm, and the depth of the second shunt groove 24 is 20% to 35% of the height of the pixel defining layer 20.
In one embodiment, a first shunt groove extending along a column direction of the array and a second shunt groove extending along a row direction of the array are provided between adjacent pixel pits.
Furthermore, the first shunt groove and the second shunt groove are connected into a whole, namely an annular shunt groove is formed around the pixel pit.
S2, please refer to fig. 5, the first functional layer ink is printed in the pixel pits 22 of the pixel defining layer 20, and the first functional layer 30 is formed after drying.
S3, referring to fig. 5 and 6, if the bridging structure 301 connected to the first functional layer 30 in two adjacent pixel pits is formed in the first shunting groove, the repairing material ink is deposited on the formed bridging structure 301, and after drying, the repairing bump 302 is formed.
Specifically, if the ink overflowing from the pixel pits flows into the first shunting grooves when the ink of the first functional layer is printed, and after drying, the bridging structure 301 is formed, and the bridging structure 301 and the first functional layer 30 form a continuous film. Then, an ink-jet printing device is used to print the repairing material ink in the first shunting groove at the bridging structure 301, so that the repairing material ink fills up the first shunting groove and forms an arched liquid surface, and then the substrate is heated to 130-170 ℃, so that the repairing material ink is dried and cured to form the repairing protrusion 302.
It will be appreciated that during printing, due to the occasional displacement of the drop landing or the excessive volume of an individual drop, ink overflows the pixel well, flows into the shunting grooves, and forms a bridging structure there after drying.
Note that the functional layers of the display device include a plurality of functional layers such as a hole injection layer, a hole transport layer, or a light emitting layer, and the first functional layer 30 is a functional layer other than the light emitting layer, such as a hole injection layer or a hole transport layer. The corresponding first functional layer ink is ink dissolved with a hole injection layer material or ink dissolved with a hole transport layer material, and the like.
In one embodiment, the repairing protrusion 302 protrudes from the upper surface of the pixel defining layer 20.
Specifically, the repairing bump 302 protrudes from the upper surface of the pixel defining layer 20 by 0.3 μm to 1 μm.
In another embodiment, the pixel definition layer is further provided with a second shunting groove extending along the array row direction, and during printing, functional layer ink overflowing from the pixel pits can flow into the second shunting groove extending along the array row direction or/and the first shunting groove extending along the column direction.
In one embodiment, the surface layer of the pixel defining layer away from the substrate is made of a hydrophobic material, and the repairing protrusion is made of a hydrophobic material.
Further, the material for repairing the projection is selected from at least one of hydrophobic materials such as 4-methyl styrene monomer, vinyl pyrrolidone monomer and methyl methacrylate monomer.
In one embodiment, the shrinkage of the repair material ink is less than or equal to 10%.
Further, the repair material ink is at least one selected from hydrophobic materials such as 4-methyl styrene monomer, vinyl pyrrolidone monomer, methyl methacrylate monomer and the like.
In this way, the repair material ink is polymerized and cured by heating, and the above-mentioned repair material ink has a small shrinkage rate (shrinkage rate of 10% or less), and thus can maintain a raised shape after drying and curing, and thus it is possible to ensure that the formed repair bump is protruded from the upper surface of the pixel defining layer by 0.3 μm to 1 μm and is hydrophobic.
In one embodiment, a small amount of solvent, such as toluene, anisole or xylene, may be added to adjust the viscosity of the repair material ink.
S4, please refer to fig. 7, forming a second functional layer including a light emitting layer in the pixel pits 22 on the pixel defining layer 20, thereby obtaining a display device.
It can be understood that, when the second functional layer is printed, since the repairing bumps 302 and the pixel defining layer 20 have the same hydrophilicity and hydrophobicity, and the wettability between the repairing bumps 20 and the ink is much lower than the wettability between the ink and the first functional layer, the limitation of the pixel pits 22 on the ink movement can be improved, and therefore, the repairing bumps 302 can prevent the second functional layer ink including the light emitting layer from continuously forming bridging defects along the bridging film.
It should be noted that the functional layers of the display device may include a plurality of functional layers such as a hole injection layer, a hole transport layer, and a light emitting layer, and when other functional layers before forming the light emitting layer, such as a hole injection layer and a hole transport layer, the above steps S2 to S3 may be repeated to repair bridging defects to the maximum extent, reduce pixel color mixing of the light emitting layer, and reduce occurrence of poor device color development.
In an embodiment, the method for manufacturing the display device further includes the step of identifying and recording the bridging structure 301 between the step S2 and the step S3.
In particular, the substrate may be inspected using an optical inspection device, and the positions of all bridging structures identified and recorded.
According to the method, before the second functional layer including the luminescent layer is printed, the repair material ink is deposited in the shunting groove at the bridging structure, and the repair bulge is formed, so that the bridging defect at the bridging structure is avoided being continuously formed when the second functional layer ink is printed, the bridging defect of the luminescent layer can be obviously reduced, the probability of color mixing of the luminescent layer due to the bridging defect is reduced, the process stability and the product yield of the ink-jet printing display device are improved, the film forming uniformity can be improved, and the color developing effect is improved.
Another embodiment of the present invention provides a display device manufactured by the above method.
Referring to fig. 8, which is a schematic structural diagram of a display device according to an embodiment of the present invention, a display device 100 includes: a substrate 10, a pixel defining layer 20, a first function layer 30, and a second function layer 40 including a light emitting layer, which are sequentially provided on the substrate 10.
The pixel definition layer 20 is provided with a plurality of pixel pits, a shunt groove 23 is arranged between at least two adjacent pixel pits, the first functional layer 30 and the second functional layer 40 are both arranged in the pixel pits, and the bridging structure 301 is connected with the first functional layer 30 in the two adjacent pixel pits to form a continuous film, and part of the film is positioned in the shunt groove 23. The repairing bump 302 is disposed on the bridging structure 301 located in the shunting groove 23 and protrudes from the upper surface of the pixel defining layer 20.
Specifically, a plurality of pixel pits are distributed in an array, and a first shunting groove 23 is arranged between two adjacent pixel pits in each row of pixel pits; and the extending direction of the first shunting grooves 23 is the same as the column direction of the array distribution, and the size of the pixel pits in the column direction is larger than that of the pixel pits in the row direction.
Further, the first functional layer 30 is a hole injection layer and/or a hole transport layer, and the second functional layer 40 includes a light emitting layer.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display device, comprising:
a substrate;
the pixel defining layer is arranged on the substrate, a plurality of pixel pits are formed in the pixel defining layer, and a first shunt groove is formed between at least two adjacent pixel pits;
a first functional layer arranged in the pixel pits and a bridging structure arranged in the first shunting groove, wherein the bridging structure is connected with the first functional layers in two adjacent pixel pits;
a repair bump disposed on the bridging structure;
and the second functional layer is arranged in the pixel pit and at least comprises a light-emitting layer.
2. The display device according to claim 1, wherein the plurality of pixel pits are distributed in an array, and the first shunting grooves are disposed between two adjacent pixel pits in each row of pixel pits; and the extending direction of the first shunting grooves is the same as the column direction of the array distribution, and the size of the pixel pits in the column direction is larger than that of the pixel pits in the row direction.
3. The display device according to claim 2, wherein an opening of the first shunt recess is the same size as the pixel pit in a column direction.
4. The display device according to claim 2, wherein an opening width of the first shunt groove is 5 μm or more, and an opening width of the first shunt groove is 40% to 60% of a pitch between two pixel pits adjacent to the first shunt groove; and/or the presence of a gas in the gas,
the depth of the first shunt groove is greater than or equal to 200nm, and the depth of the first shunt groove is 20% -35% of the height of the pixel defining layer.
5. The display device according to claim 2, wherein a second shunting groove is provided between two adjacent pixel pits in each column of pixel pits; and the extending direction of the second shunting grooves is the same as the row direction of the array distribution.
6. The display device according to claim 1, wherein a surface layer of the pixel defining layer remote from the substrate is a hydrophobic surface layer, and the repair protrusion is a hydrophobic protrusion.
7. The display device according to any one of claims 1 to 6, wherein the repair protrusion protrudes from an upper surface of the pixel defining layer.
8. A manufacturing method of a display device is characterized by comprising the following steps:
s1, providing a substrate, forming a pixel definition layer on the substrate, wherein the pixel definition layer is provided with a plurality of pixel pits, and a first shunt groove is arranged between at least two adjacent pixel pits;
s2, printing first functional layer ink in the pixel pits of the pixel definition layer, and forming a first functional layer after drying;
s3, if a bridging structure connected with the first functional layers in the two adjacent pixel pits is formed in the first shunting grooves, depositing repair material ink on the formed bridging structure, and drying to form repair bulges;
and S4, forming a second functional layer including a light-emitting layer in the pixel pit on the pixel definition layer to obtain the display device.
9. The method according to claim 8, wherein the shrinkage of the repair material ink is 10% or less.
10. A display device according to claim 8 or 9, wherein a surface layer of the pixel defining layer remote from the substrate is a hydrophobic surface layer, and the repair ink is at least one selected from a group consisting of a 4-methyl styrene monomer, a vinyl pyrrolidone monomer, and a methyl methacrylate monomer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438356.6A CN111490072B (en) | 2019-05-24 | 2019-05-24 | Display device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910438356.6A CN111490072B (en) | 2019-05-24 | 2019-05-24 | Display device and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111490072A true CN111490072A (en) | 2020-08-04 |
| CN111490072B CN111490072B (en) | 2022-03-18 |
Family
ID=71797994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910438356.6A Active CN111490072B (en) | 2019-05-24 | 2019-05-24 | Display device and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111490072B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086487A (en) * | 2020-09-03 | 2020-12-15 | 云谷（固安）科技有限公司 | Display panel and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130285034A1 (en) * | 2011-12-22 | 2013-10-31 | Panasonic Corporation | Organic el display panel |
| CN103681744A (en) * | 2012-09-21 | 2014-03-26 | 三星显示有限公司 | Organic light emitting display panel and method of manufacturing the same |
| CN107293572A (en) * | 2017-06-21 | 2017-10-24 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN107369778A (en) * | 2016-12-15 | 2017-11-21 | 广东聚华印刷显示技术有限公司 | Electroluminescent device and preparation method thereof |
| CN108538892A (en) * | 2018-04-23 | 2018-09-14 | 深圳市华星光电技术有限公司 | The production method of OLED display device |
| CN108649057A (en) * | 2018-05-14 | 2018-10-12 | 京东方科技集团股份有限公司 | A kind of display panel, its production method and display device |
-
2019
- 2019-05-24 CN CN201910438356.6A patent/CN111490072B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130285034A1 (en) * | 2011-12-22 | 2013-10-31 | Panasonic Corporation | Organic el display panel |
| CN103681744A (en) * | 2012-09-21 | 2014-03-26 | 三星显示有限公司 | Organic light emitting display panel and method of manufacturing the same |
| CN107369778A (en) * | 2016-12-15 | 2017-11-21 | 广东聚华印刷显示技术有限公司 | Electroluminescent device and preparation method thereof |
| CN107293572A (en) * | 2017-06-21 | 2017-10-24 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN108538892A (en) * | 2018-04-23 | 2018-09-14 | 深圳市华星光电技术有限公司 | The production method of OLED display device |
| CN108649057A (en) * | 2018-05-14 | 2018-10-12 | 京东方科技集团股份有限公司 | A kind of display panel, its production method and display device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112086487A (en) * | 2020-09-03 | 2020-12-15 | 云谷（固安）科技有限公司 | Display panel and display device |
| CN112086487B (en) * | 2020-09-03 | 2022-10-04 | 云谷（固安）科技有限公司 | Display panel and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111490072B (en) | 2022-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107591432B (en) | Pixel defining layer, display substrate, manufacturing method and display device | |
| US7503823B2 (en) | Method of producing an organic EL light-emitting device | |
| CN108807457B (en) | Array substrate and manufacturing method thereof, OLED device and manufacturing method thereof, and display device | |
| CN107248523B (en) | Pixel defining layer and manufacturing method thereof | |
| CN107819017B (en) | Pixel defining structure, display substrate, manufacturing method of display substrate and display device | |
| US10811476B2 (en) | Pixel definition layer, manufacturing method thereof, display substrate and display device | |
| US7923919B2 (en) | Organic electroluminescent panel and production method thereof, and color filter substrate and production method thereof | |
| WO2016086728A1 (en) | Pixel definition layer and manufacturing method therefor, display panel and display device | |
| US7374264B2 (en) | Patterned substrate, and method and apparatus for manufacturing the same | |
| CN108630734B (en) | Pixel defining structure, preparation method thereof, display panel and display device | |
| CN106941112B (en) | Pixel defining layer, manufacturing method thereof and display substrate | |
| EP3240029A1 (en) | Display substrate, manufacturing method and display device thereof | |
| CN111640772B (en) | Display panel, manufacturing method thereof and display device | |
| US7838103B2 (en) | Patterned member and production method thereof | |
| CN101908599A (en) | Functional film manufacturing method | |
| WO2021174983A1 (en) | Display panel and manufacturing method therefor, and display device | |
| US20210399067A1 (en) | Display Substrate and Manufacturing Method Thereof, Display Device, and Inkjet Printing Method | |
| CN110164908B (en) | Pixel defining layer, OLED device, display panel and manufacturing method thereof | |
| CN111490072B (en) | Display device and manufacturing method thereof | |
| JP2006323381A (en) | Color filter and fabrication method thereof | |
| JP2001291584A (en) | Manufacturing method of optoelectronic device component | |
| CN111146255B (en) | Display panel, preparation method of display panel and display device | |
| CN109817692B (en) | Pixel defining layer, color filter film and manufacturing method thereof, and self-luminous display panel | |
| CN113990903A (en) | Display substrate and display panel | |
| CN117202692B (en) | Organic electroluminescent device, manufacturing method thereof and display panel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |