CN110534662B - Flexible screen body, preparation method thereof and display device - Google Patents
Flexible screen body, preparation method thereof and display device Download PDFInfo
- Publication number
- CN110534662B CN110534662B CN201910831927.2A CN201910831927A CN110534662B CN 110534662 B CN110534662 B CN 110534662B CN 201910831927 A CN201910831927 A CN 201910831927A CN 110534662 B CN110534662 B CN 110534662B
- Authority
- CN
- China
- Prior art keywords
- cathode
- flexible screen
- thickness
- organic light
- layer
- 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.)
- Active
Links
Images
Classifications
-
- 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
- H10K50/805—Electrodes
- H10K50/82—Cathodes
- H10K50/822—Cathodes characterised by their shape
-
- 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
- H10K59/30—Devices specially adapted for multicolour light emission
- H10K59/35—Devices specially adapted for multicolour light emission comprising red-green-blue [RGB] subpixels
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The flexible screen body provided in the present application includes a flexible substrate, a pixel layer, and a cathode layer. The pixel layer includes a plurality of organic light emitting units and a plurality of pixel defining units. The cathode layer includes a first cathode and a second cathode. The first cathode and the second cathode are not laid over the entire surface. The first cathode and the second cathode are disposed on surfaces of the organic light emitting unit and the pixel defining unit, respectively. In this embodiment, during the bending process of the flexible screen body, the first cathode and the second cathode are disposed to help relieve the bending stress of the flexible screen body. In this embodiment, the situation that peeling occurs between the functional film layers of the flexible screen body due to bending stress or the functional film layers are fractured due to bending stress can be alleviated, and the stability of the flexible screen body is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a flexible screen body, a preparation method of the flexible screen body and a display device.
Background
At present, with the continuous development of display technology, the application of display panels is more and more extensive, and Organic Light Emitting Diode (OLED) display panels are becoming a splendid afterthought in the display panel industry due to the advantages of fast response speed, gorgeous color, Light weight, convenience and the like.
When the OLED screen body is bent, different surfaces respectively bear compressive stress and tensile stress. After the OLED screen body is bent for many times, the problem of interlayer peeling or fracture in the functional film layer can occur between the functional film layers of the OLED screen body, and the stability of the flexible screen body is reduced.
Disclosure of Invention
Therefore, it is necessary to provide a flexible screen body, a preparation method thereof and a display device, aiming at the problem that after the OLED screen body is bent for many times, interlayer peeling occurs between functional film layers of the OLED screen body or the functional film layers are broken.
A flexible screen comprising:
a flexible substrate;
a pixel layer, the pixel layer comprising:
a plurality of organic light emitting units formed at intervals on the flexible substrate;
a plurality of pixel defining units formed at intervals on the flexible substrate between two adjacent organic light emitting units;
a cathode layer comprising:
a first cathode formed on a surface of the organic light emitting unit;
and the second cathode is formed on the surface of the pixel defining unit.
As a preferable implementation manner, on the basis of the above embodiment, along the cross-sectional direction of the flexible screen body, the thickness of the first cathode is smaller than that of the second cathode;
preferably, the first cathode has a thickness of 9nm to 13nm, and the second cathode has a thickness of 13nm to 25 nm.
As a preferable implementation manner, on the basis of the above embodiment, a surface of the first cathode away from the flexible substrate and a surface of the second cathode close to the flexible substrate are on the same horizontal plane.
As a preferable implementation manner, on the basis of the above embodiment, the second cathode includes second cathode strips arranged at intervals, the second cathode strips are arranged in parallel, and an extending direction of the second cathode strips is parallel to an extending direction of the bending axis of the flexible screen body.
As a preferred implementation manner, on the basis of the above embodiment, the method further includes:
the bonding layer is formed on the surface, away from the flexible substrate, of the second cathode; and
and the thin film packaging layer is formed on the surfaces of the first cathode and the bonding layer, which are far away from the flexible substrate.
In a preferred embodiment, in addition to the above-described examples, the adhesive layer is made of an organic material, and the adhesive layer is made of a resin-based organic material.
A method for preparing a flexible screen body comprises the following steps:
providing a flexible substrate;
forming a plurality of organic light emitting units arranged at intervals on the flexible substrate;
forming a plurality of pixel defining units arranged at intervals between every two organic light emitting units on the flexible substrate;
a first cathode is formed on a surface of the organic light emitting unit, and a second cathode is formed on a surface of the pixel defining unit.
As a preferred implementation manner, on the basis of the above embodiment, the step of forming a first cathode on the surface of the organic light emitting unit and forming a second cathode on the surface of the pixel defining unit includes:
preparing the first cathode with a first thickness on the surface of the organic light-emitting unit by adopting a first mask plate; preparing a second cathode with a second thickness on the surface of the pixel limiting unit by adopting a second mask plate, wherein the first thickness is smaller than the second thickness; or
Depositing a cathode layer of a first thickness on the surfaces of the organic light emitting unit and the pixel defining unit to form the first cathode on the surface of the organic light emitting unit; preparing a second cathode layer above the pixel limiting unit by adopting a third mask plate so as to form a second cathode with a second thickness on the surface of the pixel limiting unit, wherein the first thickness is smaller than the second thickness; or
Depositing a cathode layer with a second thickness on the surfaces of the organic light emitting unit and the pixel defining unit to form a second cathode on the surface of the pixel defining unit; and etching the cathode layer on the surface of the organic light-emitting unit to form the first cathode with a first thickness on the surface of the organic light-emitting unit, wherein the first thickness is smaller than the second thickness.
As a preferred implementation manner, on the basis of the above embodiment, the method further includes:
and etching the second cathode to form second cathode strips, wherein the second cathode strips are arranged in parallel, and the extending direction of the second cathode strips is parallel to the extending direction of the bending shaft of the flexible screen body.
A display device comprises the flexible screen body or the flexible screen body prepared by the preparation method of the flexible screen body.
The flexible screen body provided in the present application includes a flexible substrate, a pixel layer, and a cathode layer. The pixel layer includes a plurality of organic light emitting units and a plurality of pixel defining units. The cathode layer includes a first cathode and a second cathode. The first cathode and the second cathode are not laid over the entire surface. The first cathode and the second cathode are disposed on surfaces of the organic light emitting unit and the pixel defining unit, respectively. In this embodiment, during the bending process of the flexible screen body, the first cathode and the second cathode are disposed to help relieve the bending stress of the flexible screen body. In this embodiment, the situation that peeling occurs between the functional film layers of the flexible screen body due to bending stress or the functional film layers are fractured due to bending stress can be alleviated, and the stability of the flexible screen body is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a flexible screen provided in an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view of a flexible screen provided in an embodiment of the present application;
FIG. 3 is a top view of a flexible screen provided in one embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of a flexible screen provided in an embodiment of the present application;
fig. 5 is a flowchart illustrating steps of a method for manufacturing a flexible screen according to an embodiment of the present disclosure.
The reference numbers illustrate:
Organic light emitting unit 130
Thin film encapsulation layer 180
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In the traditional scheme, the problem of interlayer peeling or functional film layer internal fracture is easy to occur after the OLED screen body is bent for many times. In general, the peeling between functional films occurs mainly between the films with poor adhesion, such as between the encapsulation layer/cathode/OLED light emitting layer. Typically, the fracture in the functional layer occurs primarily in the rigid membrane layer, such as the cathode.
In the traditional scheme, the adhesion between the OCA optical adhesive layer, the thin film packaging layer and the whole cathode is greater than that between the cathode and the OLED light-emitting layer in the process of bending the OLED screen body. In addition, in the conventional scheme, the rigid film layer has poor bending resistance, so that the cathode and the OLED light emitting layer are stripped and the cathode film layer is broken. These phenomena all result in poor stability of the flexible screen after the screen is bent.
The traditional relatively poor technical problem of stability that is used for solving above flexible screen body, the technical scheme who adopts has: a gap or a groove is arranged between two adjacent film layers, and elastic materials are filled in the groove, so that the bending stress is effectively reduced, and the reliability of the display screen body is improved. The arrangement can increase the design process for manufacturing the OLED screen body on one hand, and has higher requirements on process precision on the other hand.
The application provides a flexible screen body capable of relieving bending stress and improving stability of the screen body, a preparation method of the flexible screen body and a display device. Referring to fig. 1, a flexible screen 10 is provided. The flexible screen body 10 includes a flexible substrate 110, a pixel layer (not shown) and a cathode layer (not shown). The pixel layer includes a plurality of organic light emitting units 130 and a plurality of pixel defining units 140. The cathode layer includes a first cathode 150 and a second cathode 160. The first cathode 150 is formed on a surface of the organic light emitting unit 130. The second cathode 160 is formed on the surface of the pixel defining unit 140. The flexible screen body 10 includes a flexible substrate 110, a plurality of organic light emitting units 130, a plurality of pixel defining units 140, a first cathode 150, and a second cathode 160.
The flexible substrate 110 may be a flexible material or an elastic material. The flexible substrate 110 is a material that can be deformed by pressing. For example, in one embodiment, the material of the flexible substrate 110 is PI (PI is an abbreviation of polyimide, and PI is a polymer having an imido group in a main chain) or PDMS (PDMS is polydimethylsiloxane).
The organic light emitting units 130 are formed at intervals on the flexible substrate 110. Each of the organic light emitting units 130 may include a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer of three primary colors (red, green, and blue), a hole blocking layer, an electron transport layer, and an electron injection layer, which are sequentially stacked. The organic light emitting unit 130 may emit light of three primary colors of red, green, and blue.
A plurality of pixel defining units 140 are formed at intervals on the flexible substrate 110 between the two organic light emitting units 130. The pixel defining unit 140 is made of an organic material or an inorganic material. The pixel defining unit 140 may define an organic material (the organic light emitting unit 130) for emitting light in a pixel region defined by the pixel defining unit 140, and may block water and oxygen, improve color mixing, and achieve high resolution and full color display of a display panel.
The first cathodes 150 are formed on the surfaces of the organic light emitting units 130, respectively. The second cathodes 160 are formed on the surfaces of the pixel defining units 140, respectively. In this embodiment, the first cathode 150 and the second cathode 160 may be made of Ag or Ag/Mg alloy. The first cathode 150 and the second cathode 160 are separately prepared. Therefore, a certain gap may exist between the first cathode 150 and the second cathode 160 for relieving the bending stress of the flexible screen 10. The material and thickness of the first cathode 150 and the second cathode 160 may be the same or different.
The first cathode 150 and the second cathode 160 are not entirely disposed. In one embodiment, the first cathode 150 and the second cathode 160 are spaced apart. In this embodiment, during the bending process of the flexible screen 10, the space between the first cathode 150 and the second cathode 160 helps to relieve the bending stress of the flexible screen 10. The first cathode 150 and the second cathode 160, which are separately disposed, may relieve bending stress between the organic light emitting unit 130 and the first cathode 150. The separately disposed first cathode 150 and second cathode 160 may also relieve bending stress between the second cathode 160 and the thin film encapsulation layer 180 (shown in fig. 1). In this embodiment, the situation that peeling occurs between functional film layers of the flexible screen body 10 due to bending stress or the functional film layers are broken due to bending stress can be alleviated, and the stability of the flexible screen body 10 is improved.
As a preferred implementation manner, on the basis of the above embodiment, along the cross-sectional direction of the flexible screen 10, the thickness of the first cathode 150 is smaller than that of the second cathode 160.
In this embodiment, the two cathodes are set to have different thicknesses so as to relieve stress caused by bending of the flexible screen body 10, and avoid breakage of the cathodes when bending occurs, thereby affecting the stability of the display panel. In this embodiment, the thickness difference between the first cathode 150 and the second cathode 160 can be set according to the design requirement of the flexible screen 10 or the experimental data.
In addition, referring to fig. 1, in this embodiment, the flexible screen body 10 further includes an anode layer 120. The anode layer 120 is formed on the surface of the flexible substrate 110. The organic light emitting unit 130 and the pixel defining unit 140 are directly formed on the surface of the anode layer 120.
The anode layer 120 and the first cathode 150, and the anode layer 120 and the second cathode 160 are electrically conductive. When the thickness of the first cathode 150 is smaller than that of the second cathode 160, the greater thickness of the second cathode 160 may improve the conductive performance of the second cathode 160.
As a preferable implementation manner, on the basis of the above embodiment, the thickness of the first cathode 150 is 9nm to 13nm, and the thickness of the second cathode 160 is 13nm to 25 nm. Preferably, the thickness of the first cathode 150 is 10nm, and the thickness of the second cathode 160 is 19 nm. Generally, the organic light emitting unit 130 is provided to have a thickness smaller than that of the pixel defining unit 140. Therefore, after the first cathode 150 and the second cathode 160 are respectively disposed on the surfaces of the organic light emitting unit 130 and the pixel defining unit 140, the first cathode 150 and the second cathode 160 are not generally in the same plane.
The first cathode 150 is a pixel light emitting region, and forms a loop with the anode layer 120 to drive the organic light emitting unit 130 to perform light emitting display. The first cathode 150 is thinner, so that the problem of color cast caused by over-thick cathode can be effectively solved on the premise of ensuring the conductive performance. The second cathode 160 is formed at the pixel defining unit 140, and the second cathode 160 is a thickened cathode. The greater thickness of the second cathode 160 may improve the conductive performance of the second cathode 160. .
As a preferred implementation manner, on the basis of the above embodiment, the surface of the first cathode 150 away from the flexible substrate 110 and the surface of the second cathode 160 close to the flexible substrate 110 are on the same horizontal plane.
In this embodiment, the top surface of the first cathode 150 is the surface in contact with the thin film encapsulation layer 180 shown in fig. 1 and 2. The bottom surface of the second cathode 160 is a surface in direct contact with the pixel defining unit 140. Having flush surfaces for the first cathode 150 and the second cathode 160 may allow for a greater bending angle of the flexible screen 10. For example, the bending angle may be 0 ° to 90 ° in the present embodiment.
Referring to fig. 2 and fig. 3, as a preferred embodiment, on the basis of the above embodiment, the second cathode 160 includes second cathode strips 161 arranged at intervals. The second cathode strips 161 are arranged in parallel. The extending direction of the second cathode strips 161 is parallel to the extending direction of the bending axis of the flexible screen body 10.
In this embodiment, the second cathode 160 is provided as a plurality of second cathode strips 161, so that the bending stress of the flexible screen 10 can be further relieved. The intervals between the second cathode strips 161 can further reduce the bending stress of the flexible screen body 10 during the bending process, and reduce the fracture of the cathode layer, thereby effectively prolonging the service life of the OLED display device. The second cathodes 160 are arranged in a stripe structure. As shown in fig. 3, the second cathode stripes 161 have gaps therebetween, and the extending direction of the second cathode stripes 161 is parallel to the bending axis direction. The extending direction of the second cathode strips 161 is perpendicular to the bending direction of the flexible screen 10. The second cathode stripes 161 are arranged to improve the service life of the display device and prevent the cathode layer from being broken.
Referring to fig. 4, as a preferred implementation, on the basis of the foregoing embodiment, the method further includes: an adhesive layer 170 and a thin film encapsulation layer 180.
The adhesive layer 170 is formed on the surface of the second cathode 160 away from the flexible substrate 110. The adhesive layer 170 may be made of a resin material. Such as polyethylene, polystyrene, phenolic resins, polyester resins, polyamide resins, and the like. The thin film encapsulation layer 180 is formed on the surfaces of the first cathode 150 and the adhesive layer 170 away from the flexible substrate 110. The thin film encapsulation layer 180 may be disposed in an inorganic material layer/organic material layer/inorganic material layer manner.
In this embodiment, the film encapsulation layer 180 is disposed on the whole surface. During the bending process of the flexible screen 10, the thin film encapsulation layer 180 is easy to peel off or break the film layers to be connected. The adhesive layer 170 disposed between the second cathode 160 and the film encapsulation layer 180 can reduce peeling caused by increased bending stress between the second cathode 160 and the film encapsulation layer 180 during bending of the flexible screen 10. The adhesive layer 170 may also improve the flatness of the flexible screen 10. The adhesive layer 170 can effectively improve the adhesion between the second cathode 160 and the thin film encapsulation layer 180, and prevent the peeling between the encapsulation and the cathode.
Referring to fig. 5, the present application further provides a method for manufacturing a flexible screen, including:
a flexible substrate 110 is provided. The flexible substrate 110 may be a flexible material or an elastic material. The flexible substrate 110 is a material that can be deformed by pressing. For example, in one embodiment, the material of the flexible substrate 110 is PI or PDMS.
On the flexible substrate 110, a plurality of organic light emitting units 130 are formed to be spaced apart. The organic light emitting unit 130 may emit light of three primary colors of red, green, and blue.
On the flexible substrate 110, a plurality of pixel defining units 140 are formed between every two organic light emitting units 130. A plurality of pixel defining units 140 are formed at intervals on the flexible substrate 110 between the two organic light emitting units 130. The pixel defining unit 140 may define an organic material (the organic light emitting unit 130) for emitting light in a pixel region defined by the pixel defining unit 140, and may block water and oxygen, improve color mixing, and achieve high resolution and full color display of a display panel.
A first cathode 150 is formed on a surface of the organic light emitting unit 130, and a second cathode 160 is formed on a surface of the pixel defining unit 140. In this step, the first cathode 150 and the second cathode 160 may be prepared in two steps. Alternatively, the first cathode 150 may be prepared and then the second cathode 160 may be formed. Alternatively, the second cathode 160 may be prepared and then the first cathode 150 may be formed. In this embodiment, the first cathode 150 and the second cathode 160 may be made of Ag or Ag/Mg alloy. A gap may exist between the first cathode 150 and the second cathode 160 for relieving the bending stress of the flexible screen 10.
In this embodiment, in the preparation method of the flexible screen body 10, preparation of each film layer may be achieved by evaporation, deposition, laser irradiation, and etching. In this embodiment, the first cathode 150 and the second cathode 160 are not entirely formed. The first cathode 150 and the second cathode 160 are spaced apart. In this embodiment, during the bending process of the flexible screen 10, the first cathode 150 and the second cathode 160 are disposed to help relieve the bending stress of the flexible screen 10. In this embodiment, the situation that peeling occurs between functional film layers of the flexible screen body 10 due to bending stress or the functional film layers are broken due to bending stress can be alleviated, and the stability of the flexible screen body 10 is improved.
As a preferred implementation manner, on the basis of the above embodiment, the step of forming the first cathode 150 on the surface of the organic light emitting unit 130 and the step of forming the second cathode 160 on the surface of the pixel defining unit 140 includes:
the first cathode 150 is prepared with a first thickness on the surface of the organic light emitting unit 130 by using a first mask. And preparing the second cathode 160 with a second thickness on the surface of the pixel defining unit 140 by using a second mask, wherein the first thickness is smaller than the second thickness. Or
A cathode layer of a first thickness is deposited on the surfaces of the organic light emitting unit 130 and the pixel defining unit 140 to form the first cathode 150 on the surface of the organic light emitting unit 130. A second cathode layer is prepared above the pixel defining unit 140 by using a third mask to form the second cathode 160 with a second thickness on the surface of the pixel defining unit 140, wherein the first thickness is smaller than the second thickness. Or
A cathode layer of a second thickness is deposited on the surfaces of the organic light emitting unit 130 and the pixel defining unit 140 to form the second cathode 160 on the surface of the pixel defining unit 140. Etching the cathode layer on the surface of the organic light emitting unit 130 to form the first cathode 150 with a first thickness on the surface of the organic light emitting unit 130, where the first thickness is smaller than the second thickness.
In this embodiment, three specific methods of preparing the first cathode 150 and the second cathode 160 are provided. The specific preparation method for preparing the first cathode 150 and the second cathode 160 can be selected according to the actual requirements and the specific process flow of the flexible screen 10.
As a preferred implementation manner, on the basis of the above embodiment, the method further includes:
and etching the second cathode 160 to form second cathode strips 161, wherein the second cathode strips 161 are arranged in parallel, and the extending direction of the second cathode strips 161 is parallel to the extending direction of the bending axis of the flexible screen body 10.
As a preferred implementation manner, on the basis of the above embodiment, the method further includes:
an adhesive layer 170 is prepared on the surface of the second cathode 160. And preparing a thin film encapsulation layer 180 on the surfaces of the first cathode 150 and the adhesive layer 170.
In this embodiment, the adhesive layer 170 is disposed between the second cathode 160 and the film encapsulation layer 180, so as to reduce peeling caused by an increase of bending stress between the second cathode 160 and the film encapsulation layer 180 during the bending process of the flexible screen 10. The adhesive layer 170 may also improve the flatness of the flexible screen 10. The adhesive layer 170 may be made of a resin material. The adhesive layer 170 can effectively improve the adhesion between the second cathode 160 and the thin film encapsulation layer 180, and prevent the peeling between the encapsulation and the cathode.
A display device comprises the flexible screen body 10 or the flexible screen body 10 prepared by the preparation method of the flexible screen body.
The flexible screen body 10 can be used for manufacturing a display device of a smart phone, a tablet computer, a vehicle-mounted sound box or other application display panels. For example, the flexible screen body 10 can also be used for making intelligent advertising boards.
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 application, 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 concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A flexible screen, comprising:
a flexible substrate (110);
a pixel layer, the pixel layer comprising:
a plurality of organic light emitting units (130) formed at intervals on the flexible substrate (110);
a plurality of pixel defining units (140) spaced apart from the flexible substrate (110) between two adjacent organic light emitting units (130);
a cathode layer comprising:
a first cathode (150) formed on a surface of the organic light emitting unit (130);
a second cathode (160) formed on a surface of the pixel defining unit (140), a gap being present between the first cathode (150) and the second cathode (160).
2. A flexible screen according to claim 1, wherein, in a cross-sectional direction of the flexible screen (10), the thickness of the first cathode (150) is smaller than the thickness of the second cathode (160);
the first cathode (150) has a thickness of 9nm to 13nm, and the second cathode (160) has a thickness of 13nm to 25 nm.
3. The flexible screen of claim 2, wherein a surface of the first cathode (150) distal to the flexible substrate (110) is at the same level as a surface of the second cathode (160) proximal to the flexible substrate (110).
4. The flexible screen of any of claims 1 to 3, wherein the second cathode (160) comprises spaced apart second cathode strips (161), the second cathode strips (161) being arranged in parallel, and the extension direction of the second cathode strips (161) being parallel to the extension direction of the bending axis of the flexible screen (10).
5. The flexible screen of claim 4, further comprising:
an adhesive layer (170) formed on the surface of the second cathode (160) far away from the flexible substrate (110); and
and the thin film packaging layer (180) is formed on the surfaces of the first cathode (150) and the bonding layer (170) far away from the flexible substrate (110).
6. A flexible screen according to claim 5, wherein the adhesive layer (170) is an organic material and the adhesive layer (170) is a resinous organic material.
7. A method for preparing a flexible screen body is characterized by comprising the following steps:
providing a flexible substrate (110);
forming a plurality of organic light emitting units (130) arranged at intervals on the flexible substrate (110);
forming a plurality of pixel defining units (140) arranged at intervals between every two organic light emitting units (130) on the flexible substrate (110);
forming a first cathode (150) at a surface of the organic light emitting unit (130) remote from the flexible substrate (110), and forming a second cathode (160) at a surface of the pixel defining unit (140) remote from the flexible substrate (110), a gap being present between the first cathode (150) and the second cathode (160).
8. The method of manufacturing a flexible screen according to claim 7, wherein the step of forming a first cathode (150) on the surface of the organic light emitting unit (130) and forming a second cathode (160) on the surface of the pixel defining unit (140) comprises:
preparing the first cathode (150) with a first thickness on the surface of the organic light-emitting unit (130) by adopting a first mask plate; preparing the second cathode (160) with a second thickness on the surface of the pixel defining unit (140) by using a second mask plate, wherein the first thickness is smaller than the second thickness; or
Depositing a cathode layer of a first thickness on the surface of the organic light emitting unit (130) and the pixel defining unit (140) to form the first cathode (150) on the surface of the organic light emitting unit (130); preparing a second cathode layer above the pixel defining unit (140) by using a third mask plate to form a second cathode (160) with a second thickness on the surface of the pixel defining unit (140), wherein the first thickness is smaller than the second thickness; or
Depositing a cathode layer of a second thickness on the surfaces of the organic light emitting unit (130) and the pixel defining unit (140) to form the second cathode (160) on the surface of the pixel defining unit (140); and etching the cathode layer on the surface of the organic light-emitting unit (130) to form the first cathode (150) with a first thickness on the surface of the organic light-emitting unit (130), wherein the first thickness is smaller than the second thickness.
9. The method for manufacturing a flexible screen according to claim 8, further comprising:
and etching the second cathode (160) to form second cathode strips (161), wherein the second cathode strips (161) are arranged in parallel, and the extending direction of the second cathode strips (161) is parallel to the extending direction of the bending axis of the flexible screen body (10).
10. A display device comprising a flexible screen (10) according to any one of claims 1 to 6, or the flexible screen (10) produced by a method of producing a flexible screen according to any one of claims 7 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831927.2A CN110534662B (en) | 2019-09-04 | 2019-09-04 | Flexible screen body, preparation method thereof and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910831927.2A CN110534662B (en) | 2019-09-04 | 2019-09-04 | Flexible screen body, preparation method thereof and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110534662A CN110534662A (en) | 2019-12-03 |
| CN110534662B true CN110534662B (en) | 2022-03-22 |
Family
ID=68666726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910831927.2A Active CN110534662B (en) | 2019-09-04 | 2019-09-04 | Flexible screen body, preparation method thereof and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110534662B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111509137A (en) * | 2020-04-24 | 2020-08-07 | 合肥维信诺科技有限公司 | Flexible display screen |
| CN111739415A (en) * | 2020-06-17 | 2020-10-02 | 昆山国显光电有限公司 | Display panel and display device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015131515A1 (en) * | 2014-03-03 | 2015-09-11 | 京东方科技集团股份有限公司 | Flexible display and preparation method therefor |
| WO2017185831A1 (en) * | 2016-04-29 | 2017-11-02 | 京东方科技集团股份有限公司 | Flexible display substrate and method for manufacturing same, and flexible display device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102097443B1 (en) * | 2013-05-09 | 2020-04-07 | 삼성디스플레이 주식회사 | Organic luminescence display and method for manufacturing the same |
| CN107507930A (en) * | 2017-08-09 | 2017-12-22 | 武汉华星光电半导体显示技术有限公司 | OLED display panel and preparation method thereof |
| CN207781600U (en) * | 2017-11-30 | 2018-08-28 | 京东方科技集团股份有限公司 | A kind of organic light-emitting diode display substrate and display device |
| CN109461825B (en) * | 2018-08-29 | 2020-11-13 | 云谷（固安）科技有限公司 | Flexible display panel, manufacturing method thereof and flexible display device |
| CN109817694B (en) * | 2019-03-26 | 2021-09-07 | 京东方科技集团股份有限公司 | Organic light-emitting display panel, manufacturing method and display device |
| CN110148612A (en) * | 2019-04-29 | 2019-08-20 | 武汉华星光电半导体显示技术有限公司 | Organic LED display panel and preparation method thereof |
-
2019
- 2019-09-04 CN CN201910831927.2A patent/CN110534662B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015131515A1 (en) * | 2014-03-03 | 2015-09-11 | 京东方科技集团股份有限公司 | Flexible display and preparation method therefor |
| WO2017185831A1 (en) * | 2016-04-29 | 2017-11-02 | 京东方科技集团股份有限公司 | Flexible display substrate and method for manufacturing same, and flexible display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110534662A (en) | 2019-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109461830B (en) | Flexible display panel, display device and preparation method thereof | |
| CN109461832B (en) | Flexible display panel and manufacturing method thereof | |
| CN110989861B (en) | Display panel and manufacturing method thereof | |
| WO2019233479A1 (en) | Display panel and display device | |
| CN107425131B (en) | WOLED device and manufacturing method thereof | |
| US10833287B2 (en) | Flexible display device and manufacturing method thereof | |
| CN109411513B (en) | Flexible display panel and flexible display device | |
| CN110534662B (en) | Flexible screen body, preparation method thereof and display device | |
| WO2015145533A1 (en) | Light-emitting device and production method for light-emitting device | |
| CN102903728A (en) | Organic light-emitting diode display and manufacturing method thereof | |
| CN109950291B (en) | Organic light emitting display panel and manufacturing method thereof | |
| KR20050065327A (en) | Organic el pannel and method of manufacturing the same | |
| KR20120092019A (en) | Light-emitting device | |
| CN109087935A (en) | Display base plate and preparation method thereof, display panel | |
| CN110391349B (en) | Organic light-emitting diode display panel and manufacturing method thereof | |
| JP5533073B2 (en) | Electro-optical device and illumination device | |
| CN110658951B (en) | Touch substrate, manufacturing method thereof and touch display device | |
| CN114156306B (en) | Display panel manufacturing method, display panel and display device | |
| US20080062074A1 (en) | Display medium | |
| CN112542537A (en) | Quantum dot film layer, backlight module and preparation method of backlight module | |
| CN112018131A (en) | Flexible display panel and preparation method thereof | |
| CN111162188A (en) | Thin film packaging structure, preparation method thereof and display panel | |
| US20210305540A1 (en) | Organic light-emitting device and manufacturing method therefor | |
| CN108288680A (en) | A kind of flexibility AMOLED display screens encapsulating structure and its packaging method | |
| US20210408466A1 (en) | Display panel and method of manufacturing the same |
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 |