CN112420969A - Manufacturing method of flexible OLED display panel and display device - Google Patents

Manufacturing method of flexible OLED display panel and display device Download PDF

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Publication number
CN112420969A
CN112420969A CN202011266702.6A CN202011266702A CN112420969A CN 112420969 A CN112420969 A CN 112420969A CN 202011266702 A CN202011266702 A CN 202011266702A CN 112420969 A CN112420969 A CN 112420969A
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China
Prior art keywords
layer
adhesion
glass slide
medium layer
adhesion medium
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CN202011266702.6A
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Chinese (zh)
Inventor
钱佳佳
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Shenzhen China Star Optoelectronics Semiconductor Display Technology Co Ltd
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Priority to CN202011266702.6A priority Critical patent/CN112420969A/en
Publication of CN112420969A publication Critical patent/CN112420969A/en
Pending legal-status Critical Current

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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
    • H10K71/80—Manufacture or treatment specially adapted for the organic devices covered by this subclass using temporary substrates
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The application provides a manufacturing method of a flexible OLED display panel and a display device, wherein the method comprises the following steps: providing a glass slide; attaching an adhesion medium layer on the glass slide; adhering a substrate layer on the adhesion medium layer; manufacturing an array layer and an OLED device layer on the substrate layer; attaching a thin film packaging layer and a barrier layer on the OLED device layer; and sucking the glass slide through a sucking disc so as to strip the substrate layer and the adhesion medium layer from each other. Compared with the prior art, the adhesion medium layer is arranged between the glass slide and the substrate layer, and the adhesion between the adhesion medium layer and the substrate layer is smaller than that between the adhesion medium layer and the glass slide, so that when the glass slide is peeled, the substrate layer can be prevented from being damaged by laser, and the yield and the reliability of the display device are improved.

Description

Manufacturing method of flexible OLED display panel and display device
Technical Field
The application belongs to the technical field of display, and particularly relates to a manufacturing method of a flexible OLED display panel and a display device.
Background
Organic Light Emission Display (OLED) devices have many advantages, such as: the display panel has the advantages of active light emission, high brightness, high contrast, low power consumption, wide viewing angle, high response speed, wide working temperature range, light weight, thinness and the like, wherein the greatest advantage is that flexible display can be realized. The conventional method of the conventional flexible OLED display is that polyimide (namely a substrate layer) is coated on a Carrier Glass (Glass slide), an array layer and an OLED device layer are manufactured, the packaging of a thin film packaging layer is completed, the polyimide on the upper surface of the Glass slide is melted through a laser stripping technology, the substrate layer and the Glass slide are thoroughly separated by a blade, the Glass slide is taken away through a sucker, the substrate layer cannot be damaged in the stripping process, and finally the display device is caused to lose efficacy.
In view of the above, a new method for manufacturing a flexible OLED display panel is needed to solve the deficiencies in the prior art.
Disclosure of Invention
In order to solve the above technical problem, the present application provides a method for manufacturing a flexible OLED display panel and a display device, including the steps of: providing a glass slide; attaching an adhesion medium layer on the glass slide; adhering a substrate layer on the adhesion medium layer; manufacturing an array layer and an OLED device layer on the substrate layer; attaching a thin film packaging layer and a barrier layer on the OLED device layer; and sucking the glass slide through a sucking disc so as to strip the substrate layer and the adhesion medium layer from each other.
Furthermore, the first surface of the adhesion medium layer, which is adhered to the glass slide, and the second surface of the adhesion medium layer, which is adhered to the substrate layer, are both provided with adhesiveness.
Further, the viscosity of the first surface of the adhesion medium layer is greater than that of the second surface of the adhesion medium layer.
Further, the peeling strength of the first surface of the adhesion medium layer is greater than 0.16N/mm.
Further, the peeling strength of the first surface of the adhesion medium layer ranges from 0.05N/mm to 0.15N/mm.
Further, rubber columns are arranged on the first surface and the second surface of the adhesion medium layer, and the rubber columns are in a semi-fluid shape.
Furthermore, the rubber columns are uniformly distributed on the first surface and the second surface of the adhesion medium layer.
Further, the density of the rubber columns arranged on the first surface of the adhesion medium layer is greater than that of the rubber columns arranged on the second surface of the adhesion medium layer.
Further, the adhesion medium layer comprises a first adhesive glue and a second adhesive glue, the first adhesive glue is arranged on one side close to the glass slide, the second adhesive glue is arranged on one side close to the substrate layer, and the first adhesive glue and the second adhesive glue have different viscosities.
According to another aspect of the present application, there is also provided a display device including the display panel manufactured by using the method for manufacturing a flexible OLED display panel described in any one of the above.
Compared with the prior art, the display device has the advantages that the adhesion medium layer is arranged between the glass slide and the substrate layer, the adhesion between the adhesion medium layer and the substrate layer is smaller than that between the adhesion medium layer and the glass slide, so that when the glass slide is peeled, the substrate layer can be prevented from being damaged by laser, and the yield and the reliability of the display device are improved.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1: the steps of the method for manufacturing the flexible OLED display panel provided by the embodiment of the application are a flow chart.
FIG. 2: is a process flow diagram of step S110.
FIG. 3: is a process flow diagram of step S120.
FIG. 4: is a process flow diagram of step S130.
FIG. 5: is a process flow diagram of step S140.
FIG. 6: is a process flow diagram of step S150.
FIG. 7: is a process flow diagram of step S160.
FIG. 8: the display device provided by the embodiment of the application is structurally schematic.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this embodiment, the analog display screen touch unit is connected to the head tracking unit, and is configured to acquire a moving path of a sensing cursor in the display device.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
As shown in fig. 1, a flowchart of steps of a method for manufacturing a flexible OLED display panel provided in an embodiment of the present application includes the steps of:
step S110: a slide 10 is provided.
Referring to fig. 2, in the embodiment of the present application, the glass slide 10 may be tempered glass, or ordinary tempered glass having a chemical formula of Na O · CaO · 6SiO, which can withstand a temperature difference of 200 ℃. But is not limited thereto, and the slide 10 may be ordinary glass, for example.
Step S120: an adhesive medium layer 20 is attached to the slide 10.
Referring to fig. 3, in the embodiment of the present application, rubber columns are disposed on both the first surface and the second surface of the adhesion medium layer 20, the rubber columns are in a semi-fluid shape, the rubber columns are uniformly distributed on the first surface and the second surface of the adhesion medium layer 20, and the density of the rubber columns disposed on the first surface of the adhesion medium layer 20 is greater than that of the rubber columns disposed on the second surface of the adhesion medium layer 20. It should be noted that, in other embodiments, the adhesion medium layer 20 includes a first adhesive glue and a second adhesive glue, the first adhesive glue is disposed on a side close to the slide 10, the second adhesive glue is disposed on a side close to the substrate layer 30, and the first adhesive glue and the second adhesive glue have different viscosities. Further, the viscosity of the first viscous glue is greater than the viscosity of the second viscous glue.
Step S130: a substrate layer 30 is adhered to the adhesion medium layer 20.
Referring to fig. 4, in the embodiment of the present application, the material of the substrate layer 30 may be polyimide, but is not limited thereto. The first surface of the adhesion medium layer 20, which is adhered to the glass slide 10, and the second surface of the adhesion medium layer 20, which is adhered to the substrate layer 30, have adhesiveness. The viscosity of the first surface of the adhesion medium layer 20 is greater than the viscosity of the second surface of the adhesion medium layer 20. The peel strength of the first surface of the adhesion medium layer 20 is greater than 0.16N/mm. The peel strength of the first surface of the adhesion medium layer 20 ranges from 0.05N/mm to 0.15N/mm. By arranging the adhesion medium layer 20 between the glass slide 10 and the substrate layer 30 and enabling the adhesion between the adhesion medium layer 20 and the substrate layer 30 to be smaller than the adhesion between the adhesion medium layer 20 and the glass slide 10, when the glass slide is peeled off, damage of laser to the substrate layer can be avoided, and therefore yield and reliability of a display device are improved.
Step S140: an array layer 40 and an OLED device layer 50 are fabricated on the base layer 30.
Referring to fig. 5, in the embodiment of the present application, the OLED device layer 50 has functional layers such as a cathode layer and a light emitting layer.
Step S150: a thin film encapsulation layer 60 and a barrier layer 70 are attached to the OLED device layer 50.
Referring to fig. 6, in the present embodiment, the thin film encapsulation layer 60 and the barrier layer 70 are mainly used for an encapsulation process for preventing air and moisture.
Step S160: sucking the glass slide 10 through a sucking disc to enable the substrate layer 30 and the adhesion medium layer 20 to be mutually stripped.
Referring to fig. 7, in the embodiment of the present application, the laser lift-off process is omitted in the step S160, so as to achieve the purpose of reducing the cost and prevent the laser from damaging the substrate layer 30, thereby improving the yield and reliability of the display device.
Compared with the prior art, the display device has the advantages that the adhesion medium layer is arranged between the glass slide and the substrate layer, the adhesion between the adhesion medium layer and the substrate layer is smaller than that between the adhesion medium layer and the glass slide, so that when the glass slide is peeled, the substrate layer can be prevented from being damaged by laser, and the yield and the reliability of the display device are improved.
As shown in fig. 8, for a schematic structural diagram of a display device provided in an embodiment of the present application, the display device 300 includes the display panel described in the foregoing embodiment.
The display device 300 may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
When the display device 300 of the present embodiment adopts the backlight module described in the above embodiments, the display effect is better.
Of course, other conventional structures, such as a power supply unit, a display driving unit, and the like, may also be included in the display device 300 of the present embodiment.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The principle and the implementation of the present application are explained by applying specific examples, and the above description of the embodiments is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. A manufacturing method of a flexible OLED display panel is characterized by comprising the following steps:
providing a glass slide;
attaching an adhesion medium layer on the glass slide;
adhering a substrate layer on the adhesion medium layer;
manufacturing an array layer and an OLED device layer on the substrate layer;
attaching a thin film packaging layer and a barrier layer on the OLED device layer; and
and sucking the glass slide through a sucking disc so as to strip the substrate layer and the adhesion medium layer from each other.
2. The method of claim 1, wherein a first surface of the adhesion medium layer adhered to the glass slide and a second surface of the adhesion medium layer adhered to the substrate layer have adhesion.
3. The method of claim 2, wherein the viscosity of the first side of the adhesion dielectric layer is greater than the viscosity of the second side of the adhesion dielectric layer.
4. The method of claim 2, wherein the peel strength of the first side of the adhered dielectric layer is greater than 0.16N/mm.
5. The method of claim 2, wherein the peel strength of the first side of the adhered dielectric layer is in a range from 0.05N/mm to 0.15N/mm.
6. The method of claim 2, wherein the first and second surfaces of the adhesive medium layer are each provided with a rubber column, and the rubber columns are semi-fluid.
7. The method of claim 6, wherein the rubber posts are uniformly distributed on the first and second surfaces of the adhesion dielectric layer.
8. The method of claim 6, wherein the density of the rubber columns disposed on the first side of the adhesion dielectric layer is greater than the density of the rubber columns disposed on the second side of the adhesion dielectric layer.
9. The method of claim 1, wherein the adhesion medium layer comprises a first adhesive and a second adhesive, the first adhesive is disposed on a side close to the glass slide, the second adhesive is disposed on a side close to the substrate layer, and the first adhesive and the second adhesive have different viscosities.
10. A display device comprising a display panel manufactured by the method of manufacturing a flexible OLED display panel according to claims 1 to 9.
CN202011266702.6A 2020-11-13 2020-11-13 Manufacturing method of flexible OLED display panel and display device Pending CN112420969A (en)

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Application Number Priority Date Filing Date Title
CN202011266702.6A CN112420969A (en) 2020-11-13 2020-11-13 Manufacturing method of flexible OLED display panel and display device

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CN112420969A true CN112420969A (en) 2021-02-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114863826A (en) * 2022-04-12 2022-08-05 武汉华星光电半导体显示技术有限公司 Display screen and manufacturing method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070062639A1 (en) * 2005-09-20 2007-03-22 Ku-Hsien Chang Method for manufacturing a flexible display
CN107464893A (en) * 2017-07-31 2017-12-12 武汉华星光电半导体显示技术有限公司 Preparation method, flexible display device and the display of flexible display device
CN108539051A (en) * 2018-03-20 2018-09-14 武汉华星光电半导体显示技术有限公司 Display panel and preparation method thereof
CN110741427A (en) * 2017-11-10 2020-01-31 深圳市柔宇科技有限公司 Manufacturing method of flexible panel, flexible panel and display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070062639A1 (en) * 2005-09-20 2007-03-22 Ku-Hsien Chang Method for manufacturing a flexible display
CN107464893A (en) * 2017-07-31 2017-12-12 武汉华星光电半导体显示技术有限公司 Preparation method, flexible display device and the display of flexible display device
CN110741427A (en) * 2017-11-10 2020-01-31 深圳市柔宇科技有限公司 Manufacturing method of flexible panel, flexible panel and display device
CN108539051A (en) * 2018-03-20 2018-09-14 武汉华星光电半导体显示技术有限公司 Display panel and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114863826A (en) * 2022-04-12 2022-08-05 武汉华星光电半导体显示技术有限公司 Display screen and manufacturing method thereof

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Application publication date: 20210226