CN109427990B - Flexible display device and method of manufacturing the same - Google Patents
Flexible display device and method of manufacturing the same Download PDFInfo
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- CN109427990B CN109427990B CN201710723795.2A CN201710723795A CN109427990B CN 109427990 B CN109427990 B CN 109427990B CN 201710723795 A CN201710723795 A CN 201710723795A CN 109427990 B CN109427990 B CN 109427990B
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- 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
- H10K59/40—OLEDs integrated with touch screens
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Abstract
The present invention provides a flexible display device and a method of manufacturing the same, wherein the flexible display device includes: the flexible array substrate, the organic light-emitting device layer, the thin film packaging layer, the water and oxygen blocking layer, the touch electrode layer, the anti-reflection compensation film and the cover plate are sequentially stacked; the anti-reflection compensation film comprises a quarter-wave plate, a birefringence compensation film and a polyvinyl alcohol film which are sequentially stacked, the birefringence compensation film comprises a base material and a compensation film formed on the base material, the compensation film is made of high molecular polymers, and the compensation range of the compensation film on visible light is-200 nm to 200 nm. According to the invention, all the film layers below the antireflection compensation film are subjected to phase compensation, so that the influence of extra phase difference values of all the film materials below the antireflection compensation film is reduced, the reflectivity of the whole module is reduced, the dark-state light leakage phenomenon of the organic light-emitting flexible display device is reduced, and the dark-state color cast phenomenon of the organic light-emitting flexible display device is relieved.
Description
Technical Field
The invention relates to the field of OLED panel manufacturing processes, in particular to a flexible display device and a manufacturing method thereof.
Background
At present, as the country gradually increases the overall layout of the display industry, particularly the AMOLED, AMOLED display enterprises appear like bamboo shoots in spring after raining, and a strand of organic light emitting device enthusiasm storm is raised; flexible displays, which are more advanced, are also becoming the focus of research in the industry.
Fig. 1 is a cross-sectional view of a prior art flexible organic light emitting device. Fig. 1 shows a structure of a flexible display device currently in the industry, which includes a flexible array substrate 17, an organic light emitting device layer 16, a thin film encapsulation layer 15, a water and oxygen barrier layer 14, a polarizing layer 13, a touch electrode layer 12, and a cover plate 11, which are sequentially stacked. The structure is not only complex, but also other film layers below the polarizing layer 13 adopt optical-grade high polymer materials which have certain birefringence more or less, so that a certain phase difference value is introduced; eventually affecting the anti-reflective effect of the polarizing layer 13. The birefringence characteristic is a phenomenon in which a light beam enters an anisotropic crystal, is decomposed into two light beams, and is refracted in different directions. When light propagates in the inhomogeneous body, the propagation speed and the refractive index value of the light change along with different vibration directions, and the refractive index value of the light is more than one; light waves incident on the inhomogeneous body are subjected to birefringence except in a special direction, and are decomposed into two polarized lights with mutually perpendicular vibration directions, different propagation speeds and different refractive indexes, and the phenomenon is birefringence.
The structure of the flexible organic light emitting device in the prior art improves the reflectivity of the whole module, and also increases the dark state light leakage phenomenon of the organic light emitting flexible display device, thereby aggravating the dark state color cast phenomenon of the organic light emitting flexible display device.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a flexible display device and a manufacturing method thereof, which reduce the influence of extra phase difference values of all layers of film materials below an anti-reflection compensation film and reduce the reflectivity of the whole flexible display device module by performing phase compensation on all the film layers below the anti-reflection compensation film.
According to an aspect of the present invention, there is provided a flexible display device including:
a flexible array substrate;
the organic light-emitting device layer is formed on one side of the flexible array substrate;
the thin film packaging layer is formed on one side, away from the flexible array substrate, of the organic light-emitting device layer;
the water and oxygen blocking layer is formed on one side, away from the organic light-emitting device layer, of the thin film packaging layer;
the touch electrode layer is formed on one side, away from the thin film packaging layer, of the water and oxygen blocking layer;
the anti-reflection compensation film is formed on one side, away from the water and oxygen blocking layer, of the touch electrode layer; and
the cover plate is formed on one side, away from the touch electrode layer, of the anti-reflection compensation film;
wherein the anti-reflection compensation film comprises
The quarter-wave plate is formed on one side, away from the water and oxygen blocking layer, of the touch electrode layer;
the birefringence compensation film is formed on one side, away from the touch electrode layer, of the quarter-wave plate, and the birefringence compensation film is made of a birefringence effect material; and
and the polyvinyl alcohol film is formed on one side of the birefringence compensation film, which is far away from the quarter-wave plate.
Preferably, the birefringent compensation film comprises a substrate and a compensation film formed on the substrate, wherein the material of the compensation film is a high molecular polymer, and the compensation range of the compensation film for visible light is-200 nm to 200 nm.
Preferably, the material of the compensation film is one of polyethylene terephthalate and polyimide.
Preferably, the material of the substrate is one or a lamination of several of a single-layer cycloolefin polymer optical compensation film, a single-layer polymethyl methacrylate optical compensation film, a single-layer polyimide optical compensation film, a single-layer polyethylene terephthalate optical compensation film and a single-layer polycarbonate optical compensation film.
Preferably, the antireflection compensation film further includes:
the first pressure-sensitive adhesive is formed between the quarter-wave plate and the birefringence compensation film;
the second pressure-sensitive adhesive is formed between the touch electrode layer and the quarter wave plate;
and the protective film is formed between the polyvinyl alcohol film and the cover plate, and the material of the protective film is a triacetyl cellulose hard coating.
Preferably, the thickness of the protective film ranges from 10um to 50 um;
the thickness range of the polyvinyl alcohol film is 3um to 50 um;
the thickness of the compensation film is 3um to 50um,
the thickness range of the first pressure-sensitive adhesive is 1um to 30 um;
the thickness range of the quarter-wave plate is 0.5um to 50 um;
the thickness range of the second pressure-sensitive adhesive is 1um to 30 um.
Preferably, the material of the compensation film is a polymer liquid crystal material, and the compensation range of the compensation film for visible light is 0nm to 50 nm.
Preferably, the polyvinyl alcohol film is replaced with a liquid crystal polymer pigment layer;
the surface of the quarter-wave plate is coated with liquid crystal polymer, and the compensation range of the quarter-wave plate to visible light is 130nm to 150 nm.
Preferably, the antireflection compensation film further includes:
the first pressure-sensitive adhesive is formed between the quarter-wave plate and the birefringence compensation film;
the second pressure-sensitive adhesive is formed between the touch electrode layer and the quarter wave plate;
a protection film formed between the polyvinyl alcohol film and the cover plate, wherein the protection film is made of cycloolefin polymer or polymethyl methacrylate.
Preferably, the thickness of the protective film ranges from 10um to 30 um;
the thickness range of the liquid crystal polymer pigment layer is 2um to 10 um;
the thickness of the compensation film is 2um to 30um,
the thickness range of the first pressure-sensitive adhesive is 2um to 20 um;
the thickness of the quarter-wave plate is 2um to 10 um;
the thickness range of the second pressure-sensitive adhesive is 2um to 20 um.
According to another aspect of the present invention, there is also provided a method of manufacturing a flexible display device, including the steps of:
providing a flexible array substrate;
forming an organic light emitting device layer on one side of the flexible array substrate;
forming a thin film packaging layer on one side of the organic light-emitting device layer, which is far away from the flexible array substrate;
forming a water-oxygen barrier layer on one side of the thin film packaging layer, which is far away from the organic light-emitting device layer;
forming a touch electrode layer on one side of the water and oxygen barrier layer, which is far away from the thin film packaging layer;
forming an anti-reflection compensation film on one side of the touch electrode layer, which is far away from the water and oxygen blocking layer; and
and forming a cover plate on one side of the anti-reflection compensation film, which is far away from the touch electrode layer.
Wherein the step of forming the anti-reflection compensation film comprises
Forming a quarter-wave plate on one side of the touch electrode layer, which is far away from the water and oxygen barrier layer;
forming a birefringence compensation film on one side of the quarter-wave plate, which is far away from the touch electrode layer, wherein the birefringence compensation film is made of a birefringence effect material; and
and forming a polyvinyl alcohol film on one side of the birefringence compensation film, which is far away from the quarter-wave plate.
Preferably, the birefringent compensation film comprises a substrate and a compensation film formed on the substrate, wherein the material of the compensation film is a high molecular polymer, and the compensation range of the compensation film for visible light is-200 nm to 200 nm.
Preferably, the material of the compensation film is a polymer liquid crystal material, and the compensation range of the compensation film on visible light is 0nm to 50 nm;
the polyvinyl alcohol film is replaced by a liquid crystal polymer pigment layer;
the surface of the quarter-wave plate is coated with liquid crystal polymer, and the compensation range of the quarter-wave plate to visible light is 130nm to 150 nm.
In view of this, the flexible display device and the manufacturing method thereof of the present invention perform phase compensation on all the film layers below the anti-reflection compensation film, so as to reduce the influence of the extra phase difference value of each film material below the anti-reflection compensation film, reduce the reflectivity of the whole module, reduce the dark-state light leakage phenomenon of the organic light-emitting flexible display device, and alleviate the dark-state color cast phenomenon of the organic light-emitting flexible display device.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a cross-sectional view of a prior art flexible organic light emitting device;
FIG. 2 is a cross-sectional view of a first flexible organic light emitting device of the present invention;
FIG. 3 is a cross-sectional view of an anti-reflection compensation film in a first flexible organic light emitting device according to the present invention;
FIG. 4 is a cross-sectional view of a second flexible organic light emitting device of the present invention; and
fig. 5 is a cross-sectional view of an anti-reflection compensation film in a second flexible organic light emitting device according to the present invention.
Reference numerals
11 cover plate
12 touch electrode layer
13 polarizing layer
14 water oxygen barrier
15 thin film encapsulation layer
16 organic light emitting device layer
17 flexible array substrate
1 cover plate
20 anti-reflection compensation film
201 protective layer
202 polyvinyl alcohol film
203 birefringent compensation film
204 first pressure sensitive adhesive
205 quarter wave plate
206 second pressure sensitive adhesive
21 anti-reflection compensation film
211 protective layer
212 liquid crystal polymer pigment layer
213 double refraction compensation film
214 first pressure sensitive adhesive
215 liquid crystal polymer coating type quarter wave plate
216 second pressure sensitive adhesive
3 touch control electrode layer
4 water oxygen barrier layer
5 thin film encapsulation layer
6 organic light emitting device layer
7 flexible array substrate
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to provide a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In some instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring the invention.
Fig. 2 is a cross-sectional view of a first flexible organic light emitting device of the present invention. Fig. 3 is a cross-sectional view of an anti-reflection compensation film in a first flexible organic light emitting device according to the present invention. As shown in fig. 2 and 3, a first flexible organic light emitting device of the present invention includes a flexible array substrate 7, an organic light emitting device layer 6, a thin film encapsulation layer 5, a water-oxygen barrier layer 4, a touch electrode layer 3, an anti-reflection compensation film 2, and a cover plate 1. The organic light emitting device layer 6 is formed on one side of the flexible array substrate 7. The thin film encapsulation layer 5 is formed on the side of the organic light emitting device layer 6 facing away from the flexible array substrate 7. The water oxygen barrier layer 4 is formed on a side of the thin film encapsulation layer 5 facing away from the organic light emitting device layer 6. The touch electrode layer 3 is formed on the side of the water and oxygen barrier layer 4 away from the thin film packaging layer 5. The anti-reflection compensation film 20 is formed on the side of the touch electrode layer 3 away from the water and oxygen barrier layer 4. The cover plate 1 is formed on a side of the anti-reflection compensation film 20 away from the touch electrode layer 3.
Wherein, the antireflection compensation film 20 includes: a second pressure-sensitive adhesive 206, a quarter wave plate 205, a first pressure-sensitive adhesive 204, a birefringence compensation film 203, a polyvinyl alcohol film 202 and a protective film 201. The second pressure sensitive adhesive 206 is formed on a side of the touch electrode layer 3 away from the water-oxygen barrier layer 4. The quarter-wave plate 205 is formed on a side of the second pressure sensitive adhesive 206 away from the touch electrode layer 3. The first pressure sensitive adhesive 204 is formed on the side of the quarter wave plate 205 facing away from the second pressure sensitive adhesive 206. The birefringent compensation film 203 is formed on the side of the first pressure sensitive adhesive 204 facing away from the quarter wave plate 205. The polyvinyl alcohol film 202 is formed on the side of the birefringent compensation film 203 facing away from the first pressure sensitive adhesive 204. The protective film 201 is formed on the side of the polyvinyl alcohol film 202 facing away from the birefringence compensation film 203.
In this embodiment, the birefringent compensation film 203 comprises a substrate and a compensation film formed on the substrate, the compensation film is made of a high molecular polymer, and the compensation range for visible light is-200 nm to 200nm, but not limited thereto. The material of the compensation film is one of polyethylene terephthalate and polyimide, but not limited thereto. The material of the substrate is one or more of a single-layer Cyclo Olefin Polymer (COP) optical compensation film, a single-layer Polymethyl methacrylate (PMMA) optical compensation film, a single-layer Polyimide (PI) optical compensation film, a single-layer Polyethylene terephthalate (PET) optical compensation film, and a single-layer Polycarbonate (PC) optical compensation film, but not limited thereto. The material of the protective film 201 is triacetyl cellulose hard coat (HC-TAC).
In this embodiment, the thickness of each layer may be: the thickness of the protective film is in the range of 10um to 50um, but not limited thereto. The thickness of the polyvinyl alcohol film is in the range of 3um to 50um, but not limited thereto. The thickness of the compensation film is 3um to 50um, but not limited thereto. The thickness range of the first pressure-sensitive adhesive is 1um to 30um, but not limited thereto. The thickness of the quarter-wave plate ranges from 0.5um to 50um, but not limited thereto. The thickness range of the second pressure-sensitive adhesive is 1um to 30um, but not limited thereto.
Because the optical-grade cycloolefin polymer (COP) material is mastered by a few manufacturers, and the high-quality cycloolefin polymer film is expensive, the invention adopts the polyethylene terephthalate (PET)/polymethyl methacrylate (PMMA)/Polycarbonate (PC) and other cheap base materials to match with the birefringent compensation film 203 with the birefringent effect, so that the production cost can be greatly reduced, the overall yield is improved, and the invention has wide application prospect.
The polyvinyl alcohol film 202 in the first flexible organic light-emitting device can be used as a part of a polarizer, and has the function of converting natural light into linearly polarized light and playing a role in antireflection by matching with a quarter-wave plate. The birefringent compensation film 203 is used for perfecting the compensation effect of the quarter-wave plate 205 and improving the anti-reflection capability of the anti-reflection compensation film 20.
With continued reference to fig. 2 and 3, the present invention further provides a method of manufacturing a flexible display device for manufacturing the first flexible display device, comprising the steps of:
a flexible array substrate is provided.
And forming an organic light-emitting device layer on one side of the flexible array substrate.
And forming a thin film packaging layer on one side of the organic light-emitting device layer, which is far away from the flexible array substrate.
And forming a water and oxygen blocking layer on one side of the thin film packaging layer, which is far away from the organic light-emitting device layer.
And forming a touch electrode layer on one side of the water and oxygen barrier layer, which is far away from the thin film packaging layer.
And forming an anti-reflection compensation film on one side of the touch electrode layer, which is far away from the water and oxygen barrier layer. And
and forming a cover plate on one side of the anti-reflection compensation film, which is far away from the touch electrode layer.
Wherein the step of forming the anti-reflection compensation film comprises:
and forming a quarter-wave plate on one side of the touch electrode layer, which is far away from the water and oxygen barrier layer.
And forming a birefringence compensation film on one side of the quarter-wave plate, which is far away from the touch electrode layer, wherein the birefringence compensation film is made of a birefringence effect material. The birefringent compensation film comprises a substrate and a compensation film formed on the substrate, wherein the compensation film is made of high molecular polymer and has a compensation range of-200 nm to 200nm for visible light, but not limited thereto. And
and forming a polyvinyl alcohol film on the side of the birefringence compensation film, which is far away from the quarter-wave plate.
In the invention, the phase difference value introduced by the polymer material below the birefringent compensation film 203 is compensated through the birefringent compensation film 203 so as to achieve the effect of neutralization, so that the anti-reflection compensation film 20 can achieve the optimal anti-reflection effect. The assembly of the whole flexible organic light emitting device in the invention can adopt a Roll-to-Roll manufacturing process (Roll to Roll).
Fig. 4 is a cross-sectional view of a second flexible organic light emitting device of the present invention. Fig. 5 is a cross-sectional view of an anti-reflection compensation film in a second flexible organic light emitting device according to the present invention. As shown in fig. 4 and 5, the present invention further provides a second flexible organic light emitting device, which includes a flexible array substrate 7, an organic light emitting device layer 6, a thin film encapsulation layer 5, a water-oxygen barrier layer 4, a touch electrode layer 3, an anti-reflection compensation film 2, and a cover plate 1. The organic light emitting device layer 6 is formed on one side of the flexible array substrate 7. The thin film encapsulation layer 5 is formed on the side of the organic light emitting device layer 6 facing away from the flexible array substrate 7. The water oxygen barrier layer 4 is formed on a side of the thin film encapsulation layer 5 facing away from the organic light emitting device layer 6. The touch electrode layer 3 is formed on the side of the water and oxygen barrier layer 4 away from the thin film packaging layer 5. The anti-reflection compensation film 21 is formed on the side of the touch electrode layer 3 away from the water and oxygen barrier layer 4. The cover plate 1 is formed on the side of the anti-reflection compensation film 21 away from the touch electrode layer 3.
Wherein the antireflection compensation film 21 includes: a second pressure sensitive adhesive 216, a liquid crystal polymer coating type quarter wave plate 215, a first pressure sensitive adhesive 214, a birefringence compensation film 213, a liquid crystal polymer pigment layer 212 and a protective film 211. The second pressure sensitive adhesive 216 is formed on a side of the touch electrode layer 3 away from the water-oxygen barrier layer 4. The liquid crystal polymer coating type quarter-wave plate 215 is formed on the side of the second pressure-sensitive adhesive 216 away from the touch electrode layer 3. The first pressure sensitive adhesive 214 is formed on the side of the liquid crystal polymer coated quarter wave plate 215 facing away from the second pressure sensitive adhesive 216. The birefringence compensation film 213 is formed on the side of the first pressure-sensitive adhesive 214 facing away from the liquid crystal polymer-coated quarter-wave plate 215. The liquid crystal polymer pigment layer 212 is formed on the side of the birefringent compensation film 213 facing away from the first pressure sensitive adhesive 214. The protective film 211 is formed on the side of the liquid crystal polymer pigment layer 212 facing away from the birefringence compensation film 213.
In this embodiment, the material of the birefringent compensation film 213 is a polymer liquid crystal material, and the compensation range of the birefringent compensation film 213 for visible light is 0nm to 50nm, but not limited thereto. The compensation range of the liquid crystal polymer coated quarter-wave plate 215 for visible light is 130nm to 150nm, but not limited thereto. The cycloolefin polymer has an advantage of less water absorption and moisture permeability. The material of the protection film 211 is Cyclo Olefin Polymer (COP) or Polymethyl methacrylate (PMMA), but not limited thereto. The polymethyl methacrylate has the advantages of low price and mature technology.
In this embodiment, the thickness of each layer may be: the thickness of the protective film 211 ranges from 10um to 30um, but not limited thereto. The thickness of the liquid crystal polymer pigment layer 212 is in the range of 2um to 10um, but not limited thereto. The thickness of the birefringent compensation film 213 is 2um to 30um, but not limited thereto. The thickness of the first pressure-sensitive adhesive 214 ranges from 2um to 20um, but not limited thereto. The thickness of the liquid crystal polymer coating type quarter-wave plate 215 is 2um to 10um, but not limited thereto. The thickness of the second pressure-sensitive adhesive 216 ranges from 2um to 20um, but not limited thereto. Therefore, the second flexible organic light emitting device can obtain an ultrathin full-module anti-reflection assembly with the thickness of less than 50 um. The second flexible organic light emitting device can be manufactured by a coating process. The second flexible organic light emitting device of the invention is mainly different from the first flexible organic light emitting device of the invention in that the thickness of the flexible organic light emitting device can be greatly reduced, and the requirement of an ultrathin organic light emitting device can be met.
With continued reference to fig. 4 and 5, the present invention further provides a method for manufacturing a flexible display device for manufacturing the second flexible display device, comprising the steps of:
providing a flexible array substrate;
forming an organic light emitting device layer on one side of the flexible array substrate;
forming a thin film packaging layer on one side of the organic light-emitting device layer, which is far away from the flexible array substrate;
forming a water-oxygen barrier layer on one side of the thin film packaging layer, which is far away from the organic light-emitting device layer;
forming a touch electrode layer on one side of the water and oxygen barrier layer, which is far away from the thin film packaging layer;
forming an anti-reflection compensation film on one side of the touch electrode layer, which is far away from the water and oxygen barrier layer; and
forming a cover plate on one side of the anti-reflection compensation film, which is far away from the touch electrode layer;
wherein the step of forming the anti-reflection compensation film comprises
Forming a liquid crystal polymer coating type quarter-wave plate on one side of the touch electrode layer, which is far away from the water and oxygen barrier layer;
forming a birefringence compensation film on one side of the liquid crystal polymer coating type quarter-wave plate, which is far away from the touch electrode layer, wherein the birefringence compensation film is made of a birefringence effect material; the birefringence compensation film is made of polymer liquid crystal material, and the compensation range of the birefringence compensation film to visible light is 0nm to 50 nm. And
and forming a liquid crystal polymer pigment layer on one side of the birefringence compensation film, which is far away from the liquid crystal polymer coating type quarter-wave plate.
In the invention, the phase difference value introduced by the polymer material below the birefringent compensation film 213 is compensated by the birefringent compensation film 213 so as to achieve the effect of neutralization, so that the anti-reflection compensation film 21 can achieve the optimal anti-reflection effect. The whole assembly of the flexible organic light-emitting device in the invention can adopt a coating preparation process.
In summary, the flexible display device and the manufacturing method thereof of the invention perform phase compensation on all the film layers below the anti-reflection compensation film, thereby reducing the influence of extra phase difference values of all the film materials below the anti-reflection compensation film, reducing the reflectivity of the whole module, reducing the dark-state light leakage phenomenon of the organic light-emitting flexible display device, and relieving the dark-state color cast phenomenon of the organic light-emitting flexible display device.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (3)
1. A flexible display device, comprising
A flexible array substrate;
the organic light-emitting device layer is formed on one side of the flexible array substrate;
the thin film packaging layer is formed on one side, away from the flexible array substrate, of the organic light-emitting device layer;
the water and oxygen blocking layer is formed on one side, away from the organic light-emitting device layer, of the thin film packaging layer;
the touch electrode layer is formed on one side, away from the thin film packaging layer, of the water and oxygen blocking layer;
the anti-reflection compensation film is formed on one side, away from the water and oxygen blocking layer, of the touch electrode layer;
the cover plate is formed on one side, away from the touch electrode layer, of the anti-reflection compensation film;
wherein the anti-reflection compensation film comprises
The quarter-wave plate is formed on one side, away from the water and oxygen blocking layer, of the touch electrode layer, and the thickness range of the quarter-wave plate is 0.5um to 50 um;
the birefringence compensation film is formed on one side, away from the touch electrode layer, of the quarter-wave plate, the birefringence compensation film is made of a birefringence effect material and comprises a base material and a compensation film formed on the base material, the thickness of the compensation film is 3-50 um, and the base material is one or a lamination of a plurality of single-layer cycloolefin polymer optical compensation film, a single-layer polymethyl methacrylate optical compensation film, a single-layer polyimide optical compensation film, a single-layer polyethylene terephthalate optical compensation film and a single-layer polycarbonate optical compensation film; the compensation film is made of high molecular polymer, and the compensation range of the compensation film to visible light is-200 nm to 200 nm;
the polyvinyl alcohol film is formed on one side, away from the quarter-wave plate, of the birefringence compensation film, and the thickness range of the polyvinyl alcohol film is 3um to 50 um;
the first pressure-sensitive adhesive is formed between the quarter-wave plate and the birefringence compensation film, and the thickness range of the first pressure-sensitive adhesive is 1um to 30 um;
the second pressure-sensitive adhesive is formed between the touch electrode layer and the quarter-wave plate, and the thickness range of the second pressure-sensitive adhesive is 1um to 30 um; and
a protection film formed between the polyvinyl alcohol film and the cover plate, wherein the protection film is made of a triacetyl cellulose hard coating, and the thickness of the protection film ranges from 10um to 50 um.
2. The flexible display device of claim 1, wherein the material of the compensation film is one of polyethylene terephthalate and polyimide.
3. A method of manufacturing a flexible display device, comprising the steps of:
providing a flexible array substrate;
forming an organic light emitting device layer on one side of the flexible array substrate;
forming a thin film packaging layer on one side of the organic light-emitting device layer, which is far away from the flexible array substrate;
forming a water-oxygen barrier layer on one side of the thin film packaging layer, which is far away from the organic light-emitting device layer;
forming a touch electrode layer on one side of the water and oxygen barrier layer, which is far away from the thin film packaging layer;
forming an anti-reflection compensation film on one side of the touch electrode layer, which is far away from the water and oxygen blocking layer;
forming a cover plate on one side of the anti-reflection compensation film, which is far away from the touch electrode layer;
wherein the step of forming the anti-reflection compensation film comprises
Forming a quarter-wave plate on one side of the touch electrode layer, which is far away from the water and oxygen barrier layer, wherein the thickness range of the quarter-wave plate is 0.5um to 50 um;
forming a birefringence compensation film on one side of the quarter-wave plate, which is far away from the touch electrode layer, wherein the birefringence compensation film is made of a birefringence effect material, the birefringence compensation film comprises a base material and a compensation film formed on the base material, the thickness of the compensation film is 3um to 50um, the compensation film is made of a high molecular polymer, and the compensation range of the compensation film for visible light is-200 nm to 200 nm;
forming a polyvinyl alcohol film on one side of the birefringence compensation film, which is far away from the quarter-wave plate, wherein the thickness of the polyvinyl alcohol film ranges from 3um to 50 um;
forming a first pressure-sensitive adhesive between the quarter-wave plate and the birefringence compensation film, wherein the thickness range of the first pressure-sensitive adhesive is 1um to 30 um;
forming a second pressure-sensitive adhesive between the touch electrode layer and the quarter-wave plate, wherein the thickness range of the second pressure-sensitive adhesive is 1um to 30 um; and
form a protection film in polyvinyl alcohol film with between the apron, the material of protection film is triacetyl cellulose hard coat, the thickness range of protection film is 10um to 50 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710723795.2A CN109427990B (en) | 2017-08-22 | 2017-08-22 | Flexible display device and method of manufacturing the same |
Applications Claiming Priority (1)
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| CN111278643A (en) | 2017-10-27 | 2020-06-12 | 应用材料公司 | Flexible cover lens film |
| CN112055822A (en) | 2018-05-10 | 2020-12-08 | 应用材料公司 | Replaceable cover lens for flexible displays |
| CN112601835A (en) | 2018-08-14 | 2021-04-02 | 应用材料公司 | Multilayer wet-dry hard coating for flexible cover lenses |
| KR102606648B1 (en) | 2019-06-26 | 2023-11-24 | 어플라이드 머티어리얼스, 인코포레이티드 | Flexible multilayer cover lens stacks for foldable displays |
| CN112444893A (en) * | 2019-09-03 | 2021-03-05 | 上海和辉光电有限公司 | Display panel, manufacturing method thereof and display device |
| CN110911581B (en) * | 2019-11-14 | 2021-05-07 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and electronic equipment |
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Address after: 1568 Jiugong Road, Jinshan Industrial Zone, Jinshan District, Shanghai, 201506 Applicant after: Shanghai Hehui optoelectronic Co., Ltd Address before: 1568 Jiugong Road, Jinshan District, Shanghai, 201506 Applicant before: EVERDISPLAY OPTRONICS (SHANGHAI) Ltd. |
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