CN110416428B - Display panel manufacturing method and display panel - Google Patents
Display panel manufacturing method and display panel Download PDFInfo
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- CN110416428B CN110416428B CN201910659347.XA CN201910659347A CN110416428B CN 110416428 B CN110416428 B CN 110416428B CN 201910659347 A CN201910659347 A CN 201910659347A CN 110416428 B CN110416428 B CN 110416428B
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- retaining wall
- ink
- display area
- jet printing
- printing ink
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 238000007641 inkjet printing Methods 0.000 claims abstract description 77
- 239000000463 material Substances 0.000 claims abstract description 27
- 230000004888 barrier function Effects 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims description 19
- 239000003960 organic solvent Substances 0.000 claims description 4
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 abstract description 11
- 230000000903 blocking effect Effects 0.000 abstract description 7
- 239000000243 solution Substances 0.000 description 33
- 238000001035 drying Methods 0.000 description 15
- 230000008020 evaporation Effects 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 10
- 239000002904 solvent Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005525 hole transport Effects 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The application provides a manufacturing method of a display panel and the display panel, wherein the manufacturing method of the display panel comprises the following steps: providing a panel assembly including a display area and a non-display area surrounding the display area; arranging a first retaining wall surrounding the display area and a second retaining wall surrounding the first retaining wall in the non-display area, wherein a gap is formed between the first retaining wall and the second retaining wall; forming a groove surrounding the second retaining wall in the non-display area; disposing a vapor barrier material in the groove; arranging air pressure balancing solution in the gap; and performing inkjet printing on the display area using inkjet printing ink. The ink jet printing ink is blocked by the first retaining wall, the second retaining wall and the vapor blocking material, so that the outward diffusion of the vapor of the ink jet printing ink is reduced, the difference between the volatilization speed of the ink close to the edge of the panel component and the volatilization speed of the ink close to the center of the panel component is reduced, and the difference between the concentration of the ink close to the edge of the panel component and the concentration of the ink close to the center of the panel component is reduced.
Description
Technical Field
The application relates to the field of display, in particular to a manufacturing method of a display panel and the display panel.
Background
In the prior art, various product manufacturing methods in the display field tend to be manufactured in an inkjet printing mode, ink needs to be dried after each inkjet printing is finished, and in the drying process, the volatilization speed of the ink close to the edge of the panel assembly is far higher than that of the ink close to the center of the panel assembly, so that the concentration of the ink close to the edge of the panel assembly is smaller than that of the ink close to the center of the panel assembly, and how to reduce the concentration difference between the ink close to the edge of the panel assembly and the ink close to the center of the panel assembly after the drying process of the inkjet printing is an urgent problem to solve at present.
Disclosure of Invention
The application provides a manufacturing method of a display panel and the display panel, which are used for reducing the concentration difference between ink close to the edge of a panel assembly and ink close to the center of the panel assembly after the drying process of ink-jet printing.
A manufacturing method of a display panel comprises the following steps:
providing a panel assembly including a display area and a non-display area surrounding the display area;
arranging a first retaining wall and a second retaining wall in the non-display area, wherein the first retaining wall surrounds the display area, the second retaining wall surrounds the first retaining wall, and a gap is formed between the first retaining wall and the second retaining wall;
forming a groove in the non-display area, wherein the groove surrounds the second retaining wall;
disposing a vapor barrier material in the groove;
arranging a gas pressure balancing solution in the gap; and
and carrying out ink-jet printing on the display area by adopting ink-jet printing ink.
In the manufacturing method of the display panel provided by the application, the height of the second retaining wall is greater than or equal to the height of the first retaining wall.
In the manufacturing method of the display panel provided by the application, the height of the first retaining wall and the height of the second retaining wall are 1-3 micrometers.
In the method for manufacturing the display panel, the air pressure balancing solution is a volatile organic solvent.
In the manufacturing method of the display panel provided by the application, the air pressure balance solution is the same as the ink-jet printing ink, or the air pressure balance solution is the same as the solvent of the ink-jet printing ink.
In the manufacturing method of the display panel provided by the application, the depth of the groove is 1-3 micrometers, and the width of the groove is 1-2 micrometers.
In the method for manufacturing the display panel, the height of the vapor barrier material is greater than that of the second retaining wall.
In the method for manufacturing the display panel, the height of the vapor barrier material is 5-10 microns.
In the method for manufacturing the display panel, the vapor barrier material is an inorganic oxide.
A display panel, comprising:
a display area; and
a non-display area surrounding the display area, the non-display area including:
the first retaining wall surrounds the display area;
the second retaining wall surrounds the first retaining wall, a gap is formed between the first retaining wall and the second retaining wall, and the gap is used for arranging air pressure balance solution; and
a groove surrounding the second retaining wall, the groove being for disposing a vapor barrier material.
The application provides a manufacturing method of a display panel and the display panel, wherein the manufacturing method of the display panel comprises the following steps: providing a panel assembly including a display area and a non-display area; the non-display area surrounds the display area, a first retaining wall and a second retaining wall are arranged in the non-display area, the first retaining wall surrounds the display area, the second retaining wall surrounds the first retaining wall, and a gap is formed between the first retaining wall and the second retaining wall; forming a groove in the non-display area, wherein the groove surrounds the second retaining wall; disposing a vapor barrier material in the groove; arranging a gas pressure balancing solution in the gap; and performing inkjet printing on the display area using inkjet printing ink. In the process of drying the ink-jet printing ink of the display area, the first retaining wall is arranged to block the outward diffusion of the steam of the ink-jet printing ink so as to perform the first speed reduction on the evaporation speed of the ink-jet printing ink close to the edge of the panel component, the air pressure balance solution is arranged in the gap between the first retaining wall and the second retaining wall, the outward diffusion of the steam of the air pressure balance solution is avoided through the second retaining wall, the outward diffusion of the steam of the ink-jet printing ink is further avoided, the second speed reduction is performed on the evaporation speed of the ink-jet printing ink close to the edge of the panel component, the steam blocking material is arranged in the groove, the outward diffusion of the steam of the air pressure balance solution is avoided through the steam blocking material, the outward diffusion of the steam of the ink-jet printing ink is further avoided, the third speed reduction is performed on the evaporation speed of the ink-jet printing ink close to the edge of the panel component, the evaporation speed of the ink-jet printing ink close to the edge of the display area is reduced, so that the volatilization speed difference between the ink close to the edge of the panel assembly and the ink close to the center of the panel assembly after the drying process of ink-jet printing is reduced, and the concentration difference between the ink close to the edge of the panel assembly and the ink close to the center of the panel assembly after the drying process of ink-jet printing is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a method for manufacturing a display panel according to an embodiment of the present disclosure.
Fig. 2 is a schematic diagram of a panel assembly of a method for manufacturing a display panel according to an embodiment of the present disclosure.
Fig. 3 is a schematic view illustrating a first retaining wall, a second retaining wall and a groove disposed on a panel assembly according to a method for manufacturing a display panel provided in an embodiment of the present application.
Fig. 4 is a schematic diagram of disposing a pressure balancing solution, a vapor barrier material and an inkjet printing ink on a panel assembly according to a method for manufacturing a display panel provided in an embodiment of the present disclosure.
Detailed Description
The technical solution in the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application, are within the scope of protection of the present application.
Referring to fig. 1, the present application provides a method for manufacturing a display panel, including:
101. a panel assembly 201 is provided, the panel assembly 201 including a display region 2012 and a non-display region 2011, the non-display region 2011 surrounding the display region 2012.
Referring to fig. 2, the display region 2012 of the panel assembly 201 may be provided with a substrate layer and an array layer.
102. The non-display area 2011 is provided with a first retaining wall 202 and a second retaining wall 203, the first retaining wall 202 surrounds the display area 2012, the second retaining wall 203 surrounds the first retaining wall 202, and a gap 204 is formed between the first retaining wall 202 and the second retaining wall 203.
Referring to fig. 3, the height of the first retaining wall 202 is 1 micron to 3 microns. In the manufacturing process, the first retaining wall 202 may be disposed in the non-display area 2011 by deposition. The first retaining wall 202 can be used for blocking the ink-jet printing ink of the display area 2012 from flowing to the non-display area 2011, and can also be used for blocking the vapor of the ink-jet printing ink from diffusing to the non-display area 2011 in the process of drying the ink-jet printing ink, so that the volatilization speed of the ink-jet printing ink at the edge of the display area 2012 is reduced, and the first speed reduction effect is realized on the volatilization speed of the ink-jet printing ink.
The height of the second retaining wall 203 is 1 micron to 3 microns. During the manufacturing process, the second barrier 203 may be disposed in the non-display area 2011 by deposition. The gap 204 is used for setting a gas pressure equilibrium solution. The air pressure balancing solution is a volatile organic solvent. The air pressure balancing solution is the same as the ink-jet printing ink, or the air pressure balancing solution is the same as the solvent of the ink-jet printing ink.
In an embodiment, the height of the second retaining wall 203 is greater than or equal to the height of the first retaining wall 202, so as to prevent the vapor volatilized by the air pressure balance solution 207 from diffusing outward in the process of drying the inkjet printing ink, so that the vapor pressure generated by the air pressure balance solution is greater than the vapor pressure generated by the inkjet printing ink, and the evaporation speed of the inkjet printing ink near the edge of the display area 2012 is reduced, so as to perform a second speed reduction function on the volatilization speed of the inkjet printing ink, thereby reducing the difference between the volatilization speeds of the ink near the edge of the panel assembly 201 and the ink near the center of the panel assembly 201 after the drying process of the inkjet printing, and further reducing the concentration difference between the ink near the edge of the panel assembly 201 and the ink near the center of the panel assembly 201 after the drying process of the inkjet printing.
103. A groove 205 is formed in the non-display area 2011, and the groove 205 surrounds the second barrier 203.
The grooves 205 are used for providing a vapour barrier material. The depth of the grooves 205 is 1 micron to 3 microns. The width of the groove 205 is 1 micron to 2 microns. In one embodiment, the groove 205 may be formed in the non-display area 2011 by etching.
The sequence of the steps 102 and 103 can be flexibly adjusted.
104. A vapour barrier material 206 is arranged in said recess 205.
Referring to fig. 4, the height of the vapor barrier material 206 is greater than the height of the second wall 203. The height of the vapor barrier material 206 may be 5 microns to 10 microns. The vapor barrier material 206 is an inorganic oxide. The vapor barrier material 206 comprises one or a combination of zinc oxide, aluminum oxide, titanium oxide, zirconium oxide and silicon oxide.
The vapor barrier material 206 disposed in the groove 205 is used to block the vapor generated by the pressure balancing solution 207 from diffusing outward, so that the vapor pressure generated by the pressure balancing solution is greater than the vapor pressure of the inkjet printing ink, and therefore, the evaporation speed of the inkjet printing ink near the edge of the display area 2012 is reduced, so as to play a role of third speed reduction on the volatilization speed of the inkjet printing ink, thereby reducing the difference between the volatilization speeds of the ink near the edge of the panel assembly 201 and the ink near the center of the panel assembly 201 after the drying process of the inkjet printing, and further reducing the difference between the concentrations of the ink near the edge of the panel assembly 201 and the ink near the center of the panel assembly 201 after the drying process of the inkjet printing.
105. A gas pressure equalizing solution 207 is disposed in the gap 204.
The pressure equalization solution 207 is a volatile organic solvent. The vapor pressure balancing solution 207 is the same as the ink-jet printing ink, or the vapor pressure balancing solution is the same as the solvent of the ink-jet printing ink.
In one embodiment, when an ink-jet printing ink is used to form an electron transport layer in the display area 2012 of the panel assembly 201, the vapor pressure balancing solution 207 is the same as the ink-jet printing ink forming the electron transport layer or the same as a solvent of the ink-jet printing ink.
In one embodiment, when an ink-jet printing ink is used to form an electron injection layer in the display area 2012 of the panel assembly 201, the pressure equalization solution 207 is the same as the ink-jet printing ink forming the electron injection layer or the same as a solvent of the ink-jet printing ink.
In one embodiment, when an inkjet printing ink is used to form the luminescent layer in the display region 2012 of the panel assembly 201, the vapor pressure balancing solution 207 is the same as the inkjet printing ink forming the luminescent layer or the same as a solvent of the inkjet printing ink.
In one embodiment, when an inkjet printing ink is used to form a hole transport layer in the display area 2012 of the panel assembly 201, the pressure equalization solution 207 is the same as the inkjet printing ink forming the hole transport layer or the same as a solvent of the inkjet printing ink.
In one embodiment, when an inkjet printing ink is used to form a hole injection layer in the display region 2012 of the panel assembly 201, the pressure equalization solution 207 is the same as the inkjet printing ink forming the hole injection layer or the same as a solvent of the inkjet printing ink.
106. The display region 2012 is ink-jet printed with ink-jet printing ink 208.
The sequence of the step 104, the step 105 and the step 106 can be flexibly adjusted.
The application provides a manufacturing method of a display panel and the display panel, wherein the manufacturing method of the display panel comprises the following steps: providing a panel assembly including a display area and a non-display area; the non-display area surrounds the display area, a first retaining wall and a second retaining wall are arranged in the non-display area, the first retaining wall surrounds the display area, the second retaining wall surrounds the first retaining wall, and a gap is formed between the first retaining wall and the second retaining wall; forming a groove in the non-display area, wherein the groove surrounds the second retaining wall; disposing a vapor barrier material in the groove; arranging a gas pressure balancing solution in the gap; and performing inkjet printing on the display area using inkjet printing ink. In the process of drying the ink-jet printing ink of the display area, the first retaining wall is arranged to block the outward diffusion of the steam of the ink-jet printing ink so as to perform the first speed reduction on the evaporation speed of the ink-jet printing ink close to the edge of the panel component, the air pressure balance solution is arranged in the gap between the first retaining wall and the second retaining wall, the outward diffusion of the steam of the air pressure balance solution is avoided through the second retaining wall, the outward diffusion of the steam of the ink-jet printing ink is further avoided, the second speed reduction is performed on the evaporation speed of the ink-jet printing ink close to the edge of the panel component, the steam blocking material is arranged in the groove, the outward diffusion of the steam of the air pressure balance solution is avoided through the steam blocking material, the outward diffusion of the steam of the ink-jet printing ink is further avoided, the third speed reduction is performed on the evaporation speed of the ink-jet printing ink close to the edge of the panel component, the evaporation speed of the ink-jet printing ink close to the edge of the display area is reduced, so that the volatilization speed difference between the ink close to the edge of the panel assembly and the ink close to the center of the panel assembly after the drying process of ink-jet printing is reduced, and the concentration difference between the ink close to the edge of the panel assembly and the ink close to the center of the panel assembly after the drying process of ink-jet printing is reduced.
The foregoing detailed description of the embodiments of the present application has been presented to illustrate the principles and implementations of the present application, and the following detailed description of the embodiments is provided to aid in the understanding of the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (8)
1. A method for manufacturing a display panel is characterized by comprising the following steps:
providing a panel assembly including a display area and a non-display area surrounding the display area;
arranging a first retaining wall and a second retaining wall in the non-display area, wherein the first retaining wall surrounds the display area, the second retaining wall surrounds the first retaining wall, and a gap is formed between the first retaining wall and the second retaining wall;
forming a groove in the non-display area, wherein the groove surrounds the second retaining wall;
disposing a vapor barrier material in the groove;
the height of the second retaining wall is greater than or equal to that of the first retaining wall, and the height of the steam barrier material is greater than that of the second retaining wall;
arranging a gas pressure balancing solution in the gap; and
and carrying out ink-jet printing on the display area by adopting ink-jet printing ink.
2. The method for manufacturing a display panel according to claim 1, wherein the height of the first retaining wall and the height of the second retaining wall are 1 micron to 3 microns.
3. The method of claim 1, wherein the pressure-equalizing solution is a volatile organic solvent.
4. The method of claim 3, wherein the pressure-balanced solution is the same as the ink-jet printing ink or the pressure-balanced solution is the same as the ink-jet printing ink.
5. The method for manufacturing a display panel according to claim 1, wherein the depth of the groove is 1 to 3 μm, and the width of the groove is 1 to 2 μm.
6. The method of claim 1, wherein the vapor barrier material has a height of 5-10 microns.
7. The method of manufacturing a display panel according to claim 1, wherein the vapor barrier material is an inorganic oxide.
8. A display panel, comprising:
a display area; and
a non-display area surrounding the display area, the non-display area including:
the first retaining wall surrounds the display area;
the second retaining wall surrounds the first retaining wall, a gap is formed between the first retaining wall and the second retaining wall, and the gap is used for arranging air pressure balance solution; and
the groove surrounds the second retaining wall and is used for arranging a steam barrier material;
the height of the second retaining wall is greater than or equal to that of the first retaining wall, and the height of the steam barrier material is greater than that of the second retaining wall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910659347.XA CN110416428B (en) | 2019-07-22 | 2019-07-22 | Display panel manufacturing method and display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910659347.XA CN110416428B (en) | 2019-07-22 | 2019-07-22 | Display panel manufacturing method and display panel |
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| CN110416428A CN110416428A (en) | 2019-11-05 |
| CN110416428B true CN110416428B (en) | 2021-12-28 |
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| CN114068850B (en) * | 2020-12-12 | 2024-05-28 | 广东聚华印刷显示技术有限公司 | Substrate for ink-jet printing, preparation method and application thereof |
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| CN110416428A (en) | 2019-11-05 |
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