CN111201630B - Method for manufacturing organic electroluminescent display panel - Google Patents
Method for manufacturing organic electroluminescent display panel Download PDFInfo
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- CN111201630B CN111201630B CN201780095861.4A CN201780095861A CN111201630B CN 111201630 B CN111201630 B CN 111201630B CN 201780095861 A CN201780095861 A CN 201780095861A CN 111201630 B CN111201630 B CN 111201630B
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- substrate
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- organic electroluminescent
- electroluminescent display
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- 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
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- Electroluminescent Light Sources (AREA)
Abstract
本发明公开一种有机电致发光显示面板的制造方法，所述方法包括如下步骤:提供一透明基板；在基板上形成有机电致发光显示层；在有机电致发光显示层上设置膜层，以封装该有机电致发光显示层；设置挡块在该基板一侧，该挡块与膜层间隔一定距离；清洗该基板相对有机电致发光显示层的一侧；通过吹气机构或风刀朝该基板设置挡块的一端吹气；切割该基板的边缘部分，以去除所述挡块。当吹气机构或风刀朝该基板吹气时，所述挡块可有效阻挡风刀带来的气流，防止膜层被吹起，从而阻止显示面板内存在气泡不良等问题。
The invention discloses a method for manufacturing an organic electroluminescence display panel, which comprises the steps of: providing a transparent substrate; forming an organic electroluminescence display layer on the substrate; disposing a film layer on the organic electroluminescence display layer, To encapsulate the organic electroluminescence display layer; set a stopper on one side of the substrate, and the stopper is spaced from the film layer at a certain distance; clean the side of the substrate opposite to the organic electroluminescence display layer; Blow air toward the end of the base plate where the stopper is provided; cut the edge portion of the base plate to remove the stopper. When the air blowing mechanism or the air knife blows air toward the substrate, the block can effectively block the air flow brought by the air knife and prevent the film layer from being blown up, thereby preventing problems such as defective air bubbles in the display panel.
Description
Technical Field
The invention relates to the field of displays, in particular to a manufacturing method of an organic electroluminescent display panel.
Background
In the field of flat panel displays, Organic Light-Emitting display devices (OLEDs) have the following advantages:
1. the manufacturing equipment has low cost and simple manufacturing process; and
2. since the OLED can emit light by itself, a light source element is not required, and thus the size of the display can be reduced.
Therefore, the liquid crystal display is more and more favored and becomes a flat panel display which can be widely used at present and in the future.
However, in the process of manufacturing the display panel, it is necessary to clean and dry components of the display panel. In the drying process of the air knife, the film layer on the display panel is easy to be blown up, and poor bubbles are formed. In addition, since the film layer is blown up, the air knife may bring moisture for cleaning into the inside of the display panel, thereby causing a poor product. Therefore, how to reduce the influence of the air knife on the display panel in the operation process becomes a problem which needs to be solved urgently.
Disclosure of Invention
The embodiment of the invention discloses a manufacturing method of an organic electroluminescent display panel, which is used for solving the problem that the performance of the display panel is influenced in the air knife drying process.
The method for manufacturing the organic electroluminescent display panel disclosed by the embodiment of the invention comprises the following steps of:
providing a substrate;
forming an organic electroluminescent display layer on a substrate;
arranging a film layer on the organic electroluminescent display layer to encapsulate the organic electroluminescent display layer;
arranging a stop block at one side of the substrate, wherein the stop block is spaced from the film layer by a certain distance;
cleaning one side of the substrate opposite to the organic electroluminescent display layer;
blowing air towards one end of the base plate, which is provided with the stop block, through an air blowing mechanism;
the edge portion of the substrate is cut to remove the stopper.
The method for manufacturing the organic electroluminescent display panel disclosed by the embodiment of the invention comprises the following steps:
providing a substrate, wherein an organic electroluminescent display layer is arranged on the substrate, and a film layer is formed on the organic electroluminescent display layer;
arranging a stop block at one side of the substrate, wherein the stop block is spaced from the film layer by a certain distance;
cleaning one side of the substrate opposite to the organic electroluminescent display layer;
providing at least one air knife, moving the substrate to enable the at least one air knife to move relative to the substrate, and blowing air towards one end, provided with a stop block, of the substrate through the at least one air knife.
The embodiment of the invention provides a manufacturing method of an organic electroluminescent display panel, which comprises the following steps: the base plate is provided with the stop block, and when the blowing mechanism or the air knife blows towards the base plate, the stop block can effectively stop air flow brought by the air knife, so that the film layer is prevented from being blown, and the problems of poor bubbles and the like in the display panel are prevented.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display panel, a stopper and an air knife in a method for manufacturing an organic electroluminescent display panel according to an embodiment of the invention.
FIG. 2 is a top view of an embodiment of a stopper installed on the display panel.
FIG. 3 is a schematic view of another angle of the stopper according to an embodiment of the present invention.
Fig. 4 is a schematic view of a positioning carrier for setting a stopper according to an embodiment of the invention.
Fig. 5 is a schematic view illustrating a relationship between a height of the stopper and an angle of the air knife according to an embodiment of the present invention.
FIG. 6 is a cross-sectional view of a stop according to an embodiment of the invention.
FIG. 7 is a cross-sectional view of a stop according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a method for manufacturing an organic electroluminescent display panel 100 according to an embodiment of the present invention includes the following steps:
providing a substrate 10; preferably, the substrate 10 is a transparent substrate;
forming an organic electroluminescent display layer 20 on a transparent substrate 10;
disposing a film layer 30 on the organic electroluminescent display layer 20 to encapsulate the organic electroluminescent display layer 20;
arranging a stopper 40 on one side of the transparent substrate 10, the stopper being spaced apart from the film 30;
cleaning one side of the transparent substrate 10 opposite to the organic electroluminescent display layer 20;
blowing air toward one end of the transparent substrate 10 where the stopper 40 is provided by an air blowing mechanism 50;
the edge portion of the transparent substrate 10 is cut to remove the stopper 40.
In the method for manufacturing the organic electroluminescent display panel 100 according to the embodiment of the invention, the stopper 40 is provided, so that the air flow caused by the blowing mechanism 50 can be effectively blocked, the film layer 30 can be prevented from being blown, and the problems of poor bubbles and the like in the film layer 30 can be prevented.
Specifically, the transparent substrate 10 may be made of a rigid material or a flexible material, and in this embodiment, the transparent substrate is made of a glass material. The organic electroluminescent display layer 20 is sequentially stacked on the transparent substrate 10 by evaporation, printing, and coating, and the structure is a stacked structure well known to those skilled in the art and will not be described in detail herein. The film layer 30 is used to encapsulate the organic electroluminescent display layer 20 to block water or oxygen molecules from entering the organic electroluminescent display layer 20, thereby preventing damage to the organic electroluminescent display layer 20.
Referring to fig. 1 and 2, the stopper 40 is disposed on one side of the transparent substrate 10 and spaced apart from one end of the film 30. The side where the block 40 is provided serves as an inlet of the blowing mechanism 50, and thus, the block 40 may serve to block the influence of the blowing mechanism 50 on the film 20. In the present embodiment, the stopper 40 has a rectangular cross-sectional shape, which is simple in structure and easy to manufacture. The stopper 40 may be made of a single material such as foam, plastic, rubber, etc. It is understood that the stop 40 may be formed by splicing two or more of the above materials.
Referring to fig. 3 and 4, a glue layer 42 is disposed on one side of the block 40, and a protection layer 44 is disposed on the other side. Two ends of the protection layer 44 respectively protrude from two sides of the block 40 to form two connection ends 46, and each connection end 46 is provided with a positioning hole 48.
In the present embodiment, the stopper 40 is disposed on the substrate 10 by a positioning carrier 200. The carrier 200 is formed with a recess 210, and two ends of the carrier are provided with positioning posts 212. In order to attach the stopper 40 to the substrate 10, the substrate 10 with the film 30 and the organic electroluminescent display layer 20 is first placed in the groove 210 of the positioning carrier 200. The adhesive layer 42 on one side of the stop block 40 faces the substrate 10, two ends of the protection layer 44 are sleeved on the positioning posts 212 of the positioning carrier 200 through the positioning holes 48, the side of the stop block 40 provided with the adhesive layer 42 is adhered to the substrate 10, and finally, the protection layer 44 is manually torn off from the positioning carrier 200 and the stop block 40.
It is understood that the provision of the stopper 40 on one side of the transparent substrate 10 further includes; the transparent substrate 10 provided with the stopper 40 is taken out of the positioning carrier 200. In this embodiment, the transparent substrate 10 provided with the stoppers 40 is sucked and removed from the positioning carrier 200 by four vacuum chucks (not shown) to the transparent substrate 10.
Cleaning is performed from the side of the transparent substrate 10 opposite to the organic electroluminescent display layer 20. The substrate 10 subsequently requires laser irradiation from the bottom to lift the substrate 10 off the organic electroluminescent display layer 20. In order to prevent the contaminated particles from affecting the subsequent peeling effect, the substrate 10 needs to be washed with water.
After the transparent substrate 10 is cleaned, the substrate 10 is dried by the air blowing mechanism 50. The air blowing mechanism 50 is disposed on an air drying device (not shown), and in this embodiment, the air blowing mechanism 50 includes an upper air blade 51 and a lower air blade 52. The seasoning apparatus further comprises a conveyor for horizontally moving the substrate 10 provided with the film layer 30 and the organic electroluminescent display layer 20 to pass between the upper wind blade 51 and the lower wind blade 52, and the upper wind blade 51 and the lower wind blade 52 are used for removing moisture or impurities on the surfaces of the substrate 10 and the film layer 30. The air knives 51, 52 blow air toward the end of the transparent substrate 10 where the stopper 40 is disposed to remove the residual water marks or impurities on the surface of the transparent substrate 10. It is understood that the substrate 10 provided with the film layer 30 and the organic electroluminescent display layer 20 may not move, and the upper air blade 51 and the lower air blade 52 horizontally pass through two sides of the substrate 10, so as to remove residual water marks or impurities on the surface of the transparent substrate 10.
The upper and lower air knives 51, 52 form a certain angle with the running direction of the transparent substrate 10. In order to ensure that the air knife can effectively remove the residual water drops on the substrate 10, the intersecting angle of the extension line of the top point of the upper air knife 51 passing through the stopper 40 and the bottom surface of the transparent substrate 10 is defined as theta, and the angle is required to satisfy 35 degrees < theta <45 degrees, and the lower air knife 52 intersects the upper air knife 51 by 90 degrees. Referring to fig. 4, in order to avoid the upper wind knives 51, 52 blowing up the film 30, the height of the stopper 40 satisfies the following relationship:
H>(a+d)*tanθ
where H represents the height of the stop 40, a represents the thickness of the film 30, and d represents the distance separating the stop 40 from one end of the film 30.
Specifically, in fig. 5, in order to prevent the film 30 from being blown up by the upper wind blade 51, the side of the maximum angle of the wind blade intersects with the top corner of the side of the block 40 adjacent to the film 30, and forms a triangle together with the block 40 and the substrate 10. The triangle shape provides a stagnant area for the air flow of the upper air blade 51 according to the flow characteristics of the air, and the film 30 should extend into the triangle shape in order to avoid the film 30 being blown up. When the maximum included angle between the windward blade 51 and the substrate 10 is θ, the distance from the position where the windward blade 51 intersects the substrate 10 to the rib 40 is D, and therefore, the height of the stopper 40 is calculated as H ═ D × tan θ. When the thickness a of the film 30 is less than 0.2mm, D ≈ D, and thus, the stopper H ═ D ≈ tan θ; when the thickness a of the film layer 30 is greater than 0.2mm, D ═ a + D, H ═ a + D ═ tan θ; therefore, the height of the stopper 40 should satisfy H > (a + d) × tan θ in design.
In a further embodiment of the invention, it has been found through further experiments that the different configurations of the baffle have a great influence on the air flow. Referring to fig. 6, the stop 60 includes a base portion 62 and an inclined portion 64 connected thereto. The base portion 62 is substantially rectangular and includes a bonding edge 63 and a horizontal edge 66, the bonding edge 63 is used for connecting the transparent substrate 10, and the bonding portion 63 is disposed in a plane for facilitating the connection. The inclined portion 64 is located on the horizontal side 66. Specifically, the angled portion 64 is a right triangle with one right side partially coincident with the horizontal side 66 and the other right side flush with one side of the base portion 62. The inclined portion 64 provides a better flow guide for the air flow. Since the inclined portion 64 is greatly affected by the airflow, the stopper 60 of such a structure should be made of a rigid material to prevent the inclined portion 64 from vibrating. Thus, the stop 60 of this shape is preferably made of a high durometer plastic.
In a further embodiment of the present invention, in order to avoid the inclined portion from being impacted by a large air flow, referring to fig. 7, the present stopper 70 may further include a flattened portion 79 on the inclined portion 78, wherein the flattened portion 79 is obtained by flattening a sharp corner of the inclined portion 78. The chamfered portion 79 serves to reduce the impact of the air flow on the inclined portion 78, and this structure makes the stopper 70 more smoothly affected by the air flow. The stop 70 may be made of rubber, plastic or a dense foam material.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (15)
1. A method of manufacturing an organic electroluminescence display panel, characterized by comprising the steps of:
providing a substrate;
forming an organic electroluminescent display layer on a substrate;
arranging a film layer on the organic electroluminescent display layer to encapsulate the organic electroluminescent display layer;
arranging a stop block at one side of the substrate, wherein the stop block is spaced from the film layer by a certain distance;
cleaning one side of the substrate opposite to the organic electroluminescent display layer;
blowing air towards one end of the base plate, which is provided with the stop block, through an air blowing mechanism;
the edge portion of the substrate is cut to remove the stopper.
2. The method as claimed in claim 1, wherein the stopper is disposed on the substrate by a positioning carrier, the positioning carrier is formed with a groove, two ends of the positioning carrier are formed with positioning posts, two ends of the stopper are formed with positioning holes, the substrate with the film layer and the organic electroluminescent display layer is placed in the groove of the positioning carrier, and the stopper is disposed on the positioning posts of the positioning carrier by the positioning holes.
3. The method of claim 2, wherein the stopper has a glue layer on one side and a protective layer on the other side, and both ends of the protective layer protrude beyond the stopper by the length of the stopper, thereby forming two connection ends, and the positioning holes are formed on the connection ends.
4. The method of claim 1, wherein the blowing mechanism comprises an upper air knife and a lower air knife, the upper air knife forms an angle with the substrate, and the angle is greater than 35 degrees and less than 45 degrees.
5. The method of manufacturing an organic electroluminescent display panel according to claim 4, wherein the height of the stopper satisfies the following relationship: h > (a + d) tan theta,
wherein, H represents the height of the stop block, a represents the thickness of the film layer, d represents the distance between the stop block and one end of the film layer, and theta represents the included angle formed between the upper air knife and the substrate.
6. The method of claim 1, wherein the block section comprises a base portion and an inclined portion connected thereto, the base portion comprises an attaching side and a horizontal side which are oppositely disposed, the attaching side is used for connecting the substrate, the inclined portion is located on the horizontal side, and the inclined portion guides the air flow.
7. The method of claim 1, wherein the stopper section comprises a base portion including an attaching side for connecting the substrate and a horizontal side, and an inclined portion for guiding the air flow, and a flattened portion for reducing the impact of the air flow on the inclined portion.
8. A method of manufacturing an organic electroluminescence display panel, characterized by comprising:
providing a substrate, wherein an organic electroluminescent display layer is arranged on the substrate, and a film layer is formed on the organic electroluminescent display layer;
arranging a stop block at one side of the substrate, wherein the stop block is spaced from the film layer by a certain distance;
cleaning one side of the substrate opposite to the organic electroluminescent display layer;
providing at least one air knife, moving the substrate to enable the at least one air knife to move relative to the substrate, and blowing air towards one end, provided with a stop block, of the substrate through the at least one air knife.
9. The method of claim 8, wherein the air knife comprises an upper air knife and a lower air knife, and the upper air knife forms an included angle with the substrate, and the included angle ranges from greater than 35 degrees to less than 45 degrees.
10. The method of manufacturing an organic electroluminescent display panel according to claim 9, wherein the height of the stopper satisfies the following relationship: h > (a + d) tan theta,
wherein H represents the height of the stopper, a represents the thickness of the film 30, d represents the distance between the stopper and one end of the film, and θ represents the angle formed between the upper air knife and the substrate.
11. The method as claimed in claim 8, wherein the stopper is disposed on the substrate by a positioning carrier, the positioning carrier is formed with a groove, two ends of the positioning carrier are formed with positioning posts, two ends of the stopper are formed with positioning holes, the substrate with the film layer and the organic electroluminescent display layer is placed in the groove of the positioning carrier, and the stopper is disposed on the positioning posts of the positioning carrier by the positioning holes.
12. The method of claim 11, wherein the stopper has a glue layer on one side and a protective layer on the other side, both ends of the protective layer are longer than the stopper to form the connection end, and the positioning hole is formed on the connection end.
13. The method of claim 8, wherein the block section comprises a base portion and an inclined portion connected thereto, the base portion comprises an attaching side and a horizontal side which are oppositely disposed, the attaching side is used for connecting the substrate, the inclined portion is located on the horizontal side, and the inclined portion guides the air flow.
14. The method of claim 8, wherein the block section comprises a base portion including an attaching side for connecting the substrate and a horizontal side, and an inclined portion for guiding the air flow, and a flattened portion for reducing the impact of the air flow on the inclined portion.
15. The method of manufacturing an organic electroluminescent display panel according to claim 8, further comprising cutting an edge portion of the substrate to remove the stopper after the step of moving the substrate and blowing air toward an end of the substrate where the stopper is provided by an air knife.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2017/110572 WO2019090742A1 (en) | 2017-11-10 | 2017-11-10 | Method for manufacturing organic light-emitting diode display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111201630A CN111201630A (en) | 2020-05-26 |
| CN111201630B true CN111201630B (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780095861.4A Expired - Fee Related CN111201630B (en) | 2017-11-10 | 2017-11-10 | Method for manufacturing organic electroluminescent display panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111201630B (en) |
| WO (1) | WO2019090742A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635625A (en) * | 2020-12-31 | 2021-04-09 | 深圳全息界科技有限公司 | Splicing type LED module packaging process |
| CN112820817A (en) * | 2020-12-31 | 2021-05-18 | 深圳全息界科技有限公司 | Small-spacing LED module packaging process |
| CN117983512B (en) * | 2024-02-08 | 2025-12-05 | 昆山协鑫光电材料有限公司 | Air knife drying device for coating substrate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004330180A (en) * | 2003-04-17 | 2004-11-25 | Hitachi High-Tech Electronics Engineering Co Ltd | Substrate processing apparatus, substrate processing method, and substrate manufacturing method |
| CN1780507A (en) * | 2004-11-19 | 2006-05-31 | 中华映管股份有限公司 | Organic electroluminescent display panel and manufacturing method thereof |
| CN105489475A (en) * | 2015-12-09 | 2016-04-13 | 武汉华星光电技术有限公司 | Wet processing device and TFT (thin film transistor) substrate drying method |
| CN107068715A (en) * | 2017-03-28 | 2017-08-18 | 上海天马微电子有限公司 | Organic light-emitting display panel, organic light-emitting display device and preparation method of organic light-emitting display panel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047839A (en) * | 2012-12-17 | 2013-04-17 | 上海集成电路研发中心有限公司 | Device and method for drying semiconductor silicon wafer |
-
2017
- 2017-11-10 CN CN201780095861.4A patent/CN111201630B/en not_active Expired - Fee Related
- 2017-11-10 WO PCT/CN2017/110572 patent/WO2019090742A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004330180A (en) * | 2003-04-17 | 2004-11-25 | Hitachi High-Tech Electronics Engineering Co Ltd | Substrate processing apparatus, substrate processing method, and substrate manufacturing method |
| CN1780507A (en) * | 2004-11-19 | 2006-05-31 | 中华映管股份有限公司 | Organic electroluminescent display panel and manufacturing method thereof |
| CN105489475A (en) * | 2015-12-09 | 2016-04-13 | 武汉华星光电技术有限公司 | Wet processing device and TFT (thin film transistor) substrate drying method |
| CN107068715A (en) * | 2017-03-28 | 2017-08-18 | 上海天马微电子有限公司 | Organic light-emitting display panel, organic light-emitting display device and preparation method of organic light-emitting display panel |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019090742A1 (en) | 2019-05-16 |
| CN111201630A (en) | 2020-05-26 |
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