KR20170112233A - Flexible Color Filter and Flexible Display Device Including the Same - Google Patents

Abstract

The present invention relates to a flexible color filter in which a gas leakage preventing layer is formed on a carrier substrate, a protective layer, a black matrix layer and a coloring layer are formed on the carrier substrate, a carrier substrate is removed and a base film is adhered, And a flexible display device including the same and a method of manufacturing the same.

Description

Technical Field [0001] The present invention relates to a flexible color filter and a flexible display device including the flexible color filter,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flexible color filter and a flexible display device including the flexible color filter. More specifically, the present invention relates to a flexible color filter for performing a process on a carrier substrate, a flexible display device including the same, and a manufacturing method thereof.

As the amount of information that the Internet becomes universal and communication explosively increases, an environment of "ubiquitous display" in which information can be accessed anytime and anywhere will be created in the future. Accordingly, notebooks and electronic notebooks And the role of portable displays such as PDAs have become important. In order to realize such a ubiquitous display environment, it is required that the display is portable so that information can be directly accessed at a desired time and place, and a large screen characteristic for displaying various multimedia information is also required. Accordingly, in order to satisfy such portability and large-screen characteristics simultaneously, there is a need to develop a display capable of being folded when a function as a display is given by giving flexibility to the display, and folded and stored when carrying.

Representative examples of flat panel display devices include a liquid crystal display (LCD) and an organic light-emitting diode (OLED) display.

The OLED has advantages such as a very light and thin screen compared to the conventional LCD, a wide color reproduction range, a fast response time, and a high contrast ratio. In addition, the OLED display is the most suitable display for implementing a flexible display. Is being developed.

In particular, white OLED displays using white light sources have high efficiency, high resolution and long life characteristics, and are being realized in a full scale by researchers at home and abroad because of their wide variety of application possibilities as well as realization of large area high quality display.

Color filters are used for full color implementations in white OLED displays. As a specific example, Korean Patent Laid-Open No. 10-2015-0077855 discloses an organic light emitting display device capable of improving light efficiency by using a white organic light emitting device and a color filter.

The color filter includes red, green, and blue coloring regions separated by a black matrix, and combines light passing therethrough to express color. An organic material is used as a material constituting the black matrix and the coloring region. An example of a black matrix composition is shown in Korean Patent Laid-Open No. 10-2010-0055355, and an example of a colored resin composition for a color filter is shown in Korean Patent No. 10-1345481.

However, the organic material constituting the black matrix and the coloring region outgassing during the manufacturing process. The gas generated from the organic material deteriorates the characteristics of the black matrix and the coloring region, and if leaked to the outside, damages other devices, resulting in a problem of causing defective final products.

Korean Patent Publication No. 10-2015-0077855 Korean Patent Publication No. 10-2010-0055355 Korean Patent No. 10-1345481

The present invention relates to a color filter and a display device, and more particularly, to a flexible color filter capable of preventing leakage of gas generated from an organic material of a color filter, a method of manufacturing the same, a flexible display And a method of manufacturing the same.

It is another object of the present invention to provide a method of manufacturing a flexible display device which can simplify the process while preventing leakage of gas generated from the organic material constituting the color filter.

In order to solve such problems, the present invention provides a base film, A separation layer on the base film; A protective layer on the separation layer; A black matrix (BM) layer on the protective layer; A colored layer formed between the BM layers; And a gas leakage preventing layer covering the entire BM layer and the colored layer; To provide a flexible color filter.

When the gas leakage preventing layer is composed of a barrier film, the barrier film may include an organic layer in contact with the BM layer and the colored layer; And an inorganic layer formed on the organic layer. At this time, it is preferable that the organic layer is completely covered with the inorganic layer.

The gas leakage preventing layer may be composed of an inorganic film.

The inorganic layer or the inorganic film may be a single film or a laminated film including a metal oxide or a metal nitride, and the inorganic layer or the inorganic film may include any one of SiN _x , Al ₂ O ₃ , SiO ₂ , and TiO ₂ .

The inorganic layer or the inorganic film may be formed to prevent moisture permeation.

On the other hand, the base film may be a barrier film, or may further include a barrier film attached to a surface of the base film opposite to the surface in contact with the separation layer.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: forming a separation layer by applying a composition for forming a separation layer on a carrier substrate; Applying a composition for forming a protective layer on the separation layer to form a protective layer; Forming a BM layer on the protective layer, and forming a colored layer therebetween; Attaching a barrier film on the BM layer and the colored layer; Attaching a protective film on the barrier film; Removing the carrier substrate; Attaching a flexible substrate film to a surface of the separation layer on which the carrier substrate has been removed; And removing the protective film. The present invention also provides a method of manufacturing a flexible color filter.

According to another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising: forming a separation layer by applying a composition for forming an isolation layer on a carrier substrate; Applying a composition for forming a protective layer on the separation layer to form a protective layer; Forming a BM layer on the protective layer, and forming a colored layer therebetween; Forming an inorganic film on the BM layer and the colored layer; Attaching a protective film on the inorganic film; Removing the carrier substrate; Attaching a flexible substrate film to a surface of the separation layer on which the carrier substrate has been removed; And removing the protective film. A method of manufacturing a flexible color filter is also provided.

According to another aspect of the present invention, there is provided a method of manufacturing a light emitting device, A thin film transistor on the first base film; An organic light-emitting diode (OLED) on the thin film transistor; An adhesive layer on the OLED; A gas leakage preventing layer on the adhesive layer; A colored layer and a BM layer on the gas leakage preventing layer; A protective layer on the colored layer and the BM layer; A separation layer on the protective layer; And a second base film on the separation layer.

According to another aspect of the present invention, there is provided a method of manufacturing a flexible color filter, And combining the flexible color filter with a thin film transistor (TFT) array substrate.

Here, the TFT array substrate may include a white OLED, and the TFT array substrate may not include an encapsulation layer covering the white OLED.

According to the flexible color filter of the present invention, leakage of gas generated from the organic material of the color filter can be blocked by using the gas leakage preventing layer formed on the BM layer and the coloring layer to maintain the characteristics of the BM layer and the coloring layer Thereby protecting the external device from gas and consequently reducing the defects of the final product.

Further, in manufacturing the flexible display device using the flexible color filter according to the present invention, since the gas leakage preventing layer is positioned on the OLED, a sealing layer for sealing the OLED is not formed, It can serve as an encapsulating layer. At this time, the gas leakage preventing layer not only prevents gas leakage from the BM layer and the colored layer of the color filter, but also has a dual effect of preventing the OLED from being exposed to air and moisture to deteriorate the quality.

On the other hand, the base film on the side opposite to the side where the gas leakage preventing layer of the flexible color filter is formed may be constituted of a barrier film having a function similar to that of the gas leakage preventing layer, or the barrier film may be further adhered to the base film, have.

1 is a cross-sectional view of a flexible color filter according to an embodiment of the present invention.
2 is a cross-sectional view of a flexible color filter according to another embodiment of the present invention.
FIGS. 3 to 9 are cross-sectional views illustrating a process for fabricating a flexible color filter according to an exemplary embodiment of the present invention.
10 is a cross-sectional view of a flexible display device according to an embodiment of the present invention.
11 is a cross-sectional view illustrating a manufacturing process of a flexible display device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of a flexible color filter and a manufacturing method thereof, a flexible display device including a flexible color filter, and a manufacturing method thereof will be described in detail with reference to the drawings. It is to be understood, however, that the drawings are exemplary only for illustrating the present invention, and the present invention is not limited thereto. Also, for ease of explanation, some of the elements may be exaggerated in the drawings, or may be omitted or omitted.

The present invention provides a flexible color filter capable of preventing leakage of gas generated from an organic material by using a BM leakage preventing layer formed on a BM layer and a colored layer of a color filter.

1 is a cross-sectional view of a flexible color filter according to an embodiment of the present invention.

Referring to FIG. 1, a flexible color filter 100 according to an embodiment of the present invention includes a base film 110, a separation layer 120, a protection layer 130, a black matrix (BM) layer 140, a colored layer 150, and the gas leakage preventing layer 160 are sequentially stacked.

In the present invention, in order to provide a flexible color filter, at least one of the layers constituting the color filter 100, preferably the separation layer 120 or the protection layer 130, more preferably the separation layer 120, Lt; / RTI >

As the material of the organic layer, a polymer material may be used. The polymer material may be, for example, polyacrylate, polymethacrylate (for example, PMMA), polyimide, polyamide, polyvinyl alcohol, polyamic acid polyamide resin, polyimide resin, polyimide resin, polymamic acid, polyolefin (e.g., PE, PP), polystyrene, polynorbornene, phenylmaleimide copolymer, polyazobenzene, A polymer such as polyphenylenephthalamide, polyester (e.g., PET, PBT), polyarylate, cinnamate polymer, coumarin polymer, phthalimidine polymer, A chalcone-based polymer, and an aromatic acetylene-based polymer.

The polymeric material may be selected from the group consisting of a base film 110, an isolation layer 120, a protective layer 130, a BM layer 140, a colored layer 150, a gas leakage prevention layer 160, Applicable to more than one layer. For example, the same or similar polymer may be applied to each layer, or polyacrylate may be applied only to the separation layer 120, and the remaining layers may be materials known in the art.

The base film 110 may be any of those usually used for optical transparent films, but it is preferable to use a film excellent in flexibility, transparency, thermal stability, moisture barrier property, uniformity of phase difference, isotropy and the like. Further, as will be described later, a gas barrier film may be used as the substrate film 100.

The material of the base film 110 may be a polymeric material as described above or a commonly used polyethylene terephthalate, polyethylene, polystyrene, polycarbonate, polyimide, or the like.

The separation layer 120 is a layer formed for peeling from the carrier substrate after the production of the color filter is completed in the manufacturing process of the present invention. Therefore, the separation layer 120 can be separated from the carrier substrate by a physical force, and after the separation, the base film 110 is laminated.

The protective layer 130 is formed on the isolation layer 120 as a layer for protecting the isolation layer 120. The protection layer 130 may be formed of the organic layer described above, or may be formed of an inorganic insulating layer.

The coloring layer 150 is a layer for implementing colors for a color display and typically has a pattern of red, green, and blue, and blocks the light except the pixel region. And the BM layer 140, which is a light-shielding layer. However, it is not necessary that the colored layer should include all the red, green, and blue patterns or only the red, green, and blue patterns. Depending on the color rendering method of the flexible display device, Or a pattern of another color such as a white pattern or the like may be further included.

On the other hand, when the external light reaches the coloring layer of each color, only the light having the wavelength of the corresponding color is transmitted and the light having the wavelengths of the remaining two colors is absorbed. Thus, the amount of incident light of external light can be effectively reduced, May be performed instead.

As the material of the BM layer 140 and the coloring layer 15, a polymer resin, a polymerizable organic compound, or the like can be used. Since the BM layer 140 and the coloring layer 150 are composed of the organic materials as described above, Gas generation from the material can be a problem.

Accordingly, in the present invention, the gas leakage preventing layer 160 covering the entirety of the BM layer 140 and the colored layer 150 is formed.

As the gas leakage preventing layer 160, a gas barrier barrier film may be used or an inorganic film may be deposited.

In this case, an inorganic layer is formed on the outermost side of the barrier film opposite to the side in contact with the BM layer 140 and the colored layer 150. The organic layer formed inside the outermost inorganic layer is formed to have a smaller area than that of the inorganic layer and is formed to be completely covered with the inorganic layer.

Instead of using a barrier film, an inorganic film may be deposited to be used as the gas leakage preventing layer 160.

The inorganic film deposited on the barrier film or the inorganic film deposited on the gas leakage preventing layer 160 may be a single film or a laminated film containing a metal oxide or a metal nitride and specifically SiN _x , Al ₂ O ₃ , SiO ₂ , TiO ₂ Or the like.

Further, the inorganic layer or the inorganic film may be formed to prevent moisture permeation.

The thickness of the gas leakage preventing layer 160 may be 0.1 to 10 탆.

The thickness of each layer is not particularly limited in the present invention. However, in order to make the thickness of the flexible color filter and the flexible display device including the flexible color filter thinner, it is advantageous that the thickness of each layer is as thin as possible, and thus the thickness of each layer is preferably several micrometers .

Preferably, the flexible color filter 100 according to an embodiment of the present invention

A base film 110 made of a polyimide-based material and having a thickness of 10 to 100 mu m;

A separating layer 120 made of a polyacrylic material and having a thickness of 0.01 to 1.0 mu m;

A protective layer 130 of a polycycloolefin-based material and having a thickness of 0.5 to 5 占 퐉;

A colored layer 150 having a thickness of 0.5 to 5 占 퐉; And

Acrylate, AlO _3, and the like, and a gas leakage preventing layer 160 having a thickness of 0.1 to 10 μm.

On the other hand, the gas leakage preventing layer may be additionally formed on the opposite side of the color filter, or gas leakage of the organic material may be further prevented by using a gas barrier film as the base film.

2 is a cross-sectional view of a flexible color filter according to another embodiment of the present invention.

2, a base film 110, an isolation layer 120, a protective layer 130, a black matrix (BM) layer 140, a coloring layer 150, and a gas leakage preventing layer 160 are formed. The sequentially stacked structure is the same as the embodiment of the present invention shown in FIG. 1, but a second barrier film 190 is attached to the bottom of the base film 110.

As described above, since most of the layers constituting the flexible color filter are made of organic materials, the resulting gas may be generated. Therefore, the barrier film 190 may be adhered not only to the BM layer 140 and the coloring layer 150 but also to the opposite surface, thereby minimizing defective products due to gas leakage.

Another aspect of the present invention provides a method of manufacturing a flexible color filter capable of preventing the leakage of gas generated from an organic material by forming a gas leakage preventing layer on the BM layer and the colored layer of the color filter.

FIGS. 3 to 9 are cross-sectional views illustrating a method of fabricating a flexible color filter according to an exemplary embodiment of the present invention.

First, as shown in FIG. 3, after the carrier substrate 170 is prepared, a separation layer 120 is formed by applying a composition for forming a separation layer.

Although it is preferable to use a glass substrate as the carrier substrate 170, other materials may be used without limitation. However, it is preferable that the material has heat resistance so as not to be deformed even at high temperatures, that is, to maintain flatness so as to withstand subsequent process temperatures.

As a method of applying the composition for forming a separation layer, a known coating method may be used. For example, spin coating, die coating, spray coating, roll coating, screen coating, slit coating, dip coating, gravure coating and the like can be mentioned. Or an inkjet method may be used.

The composition for forming the separation layer is coated and cured to form the separation layer 120. In this case, the curing process may be performed using heat curing or UV curing alone, or a combination of thermal curing and UV curing. When the thermosetting is used, it can be heated by an oven, a hot plate, etc. The heating temperature and time may vary depending on the composition, but for example, the heat treatment may be performed at 80 to 250 ° C for 10 to 120 minutes.

Next, as shown in FIG. 4, a protective layer 130 is formed by applying a composition for forming a protective layer on the formed separation layer 120.

On the other hand, as described above, the separation layer 120 can be peeled off by a physical force, and the protective layer may be formed so as to surround the separation layer to the side thereof because the peeling force is very weak.

The coating method and the curing process of the composition for forming the protective layer are as described above.

Next, as shown in FIG. 5, a BM layer 140 is formed on the formed protective layer 130, and a colored layer 150 of red (R), green (G), and blue (B) A BM layer 140 is formed on the protective layer 130 so as to partition a portion forming a pixel, and then a composition for forming each coloring layer for color representation is applied, exposed in a predetermined pattern, Development and thermosetting. The color constituting the coloring layer may be arbitrarily selected, and the order of formation of each color may be arbitrarily selected.

The coating method and the curing process of the BM layer 140 and the coloring layer 150 are as described above.

On the other hand, the order of forming the BM layer 140 and the colored layer 150 may be changed as needed. That is, it is also possible to form the BM layer 140 after patterning the colored layer 150 first.

Next, as shown in FIG. 6, the gas leakage blocking layer 160 is formed to cover the entire BM layer 140 and the colored layer 150 formed.

When a barrier film is used as the gas leakage preventing layer 160, the barrier film may be attached to the BM layer 140 and the coloring layer 150. When the inorganic film is used as the gas leakage blocking layer 160, And an inorganic film forming material is deposited on the colored layer 150 to form an inorganic film.

7, a protective film 180 is attached on the gas leakage blocking layer 160 and the carrier substrate 170 is separated from the separation layer 120 as shown in FIG.

The process of separating the carrier substrate 170 from the separation layer 120 may be performed at a normal temperature and may be performed by a physical separation method in which the carrier substrate 170 as a glass substrate is detached from the separation layer 120 have.

The method of peeling may be a lift-off method or a peel-off method, but is not limited thereto.

Next, as shown in FIG. 9, the base film 110 is bonded to the separation layer 120.

The base film 110 is flexible and can be selected from among the above-mentioned materials suitably for a desired purpose. A barrier film may be used as the base film 110, or a barrier film may be further adhered on the base film 110 As described above.

Although not shown in the drawing, the base film 110 can be adhered to the separation layer 120 using an adhesive layer. Since the adhesive that can be used is a photo-curable adhesive and does not require a separate drying process after photo- The process is simple and productivity is improved. As the photocurable adhesive used in the present invention, the photocurable adhesive used in the field can be used without any particular limitation. For example, a composition comprising an epoxy compound or an acrylic monomer can be used.

In the photocuring of the adhesive layer, an electron beam, a proton beam, a neutron beam, etc. may be used in addition to an electromagnetic wave such as a deep ultraviolet ray, ultraviolet ray, near ultraviolet ray, infrared ray, X- It is advantageous to cure by ultraviolet irradiation from the availability of the irradiation apparatus, the price, and the like.

As a light source for ultraviolet irradiation, a high-pressure mercury lamp, an electrodeless lamp, an ultra-high pressure mercury lamp, a carbon arc lamp, a xenon lamp, a metal halide lamp, a chemical lamp or a black light may be used.

Another aspect of the present invention provides a flexible display device capable of preventing leakage of gas generated from an organic material using a color filter according to the present invention.

10 is a cross-sectional view of a flexible display device according to an embodiment of the present invention.

10, a flexible display device 10 according to an exemplary embodiment of the present invention includes a thin film transistor (TFT) and an organic light emitting diode (OLED) An OLED substrate 200, a flexible color filter 100, and an adhesive layer 300 for bonding the same.

The flexible color filter 100 includes a base film 110, a separation layer 120, a protective layer 130, a BM layer 140, a colored layer 150, and a gas leakage preventing layer 160 And have sequentially stacked structures.

The TFT + OLED substrate 200 includes a flexible base film 210 and has a structure in which a TFT layer 220 and an OLED layer 230 are sequentially stacked on a flexible base film 210, Is not particularly limited in the present invention. In addition, the TFT + OLED substrate 200 may be fabricated in any manner known in the art of flexible display technology.

An adhesive layer 300 is formed between the flexible color filter 100 and the TFT + OLED substrate 200. The adhesive layer 300 is composed of an optically clear adhesive (OCA) or an optically clear resin (OCR).

It is noted that there is no encapsulation layer formed on the OLED layer 230 in order to prevent deterioration of the quality of the OLED layer 230. The gas leakage preventing layer 160 included in the flexible color filter 100 according to the embodiment of the present invention prevents gas leakage from the BM layer 140 and the coloring layer 150, And functions as an encapsulation layer to prevent deterioration of the quality of the adhesive layer 230.

Yet another aspect of the present invention provides a method of manufacturing a flexible display device that can prevent leakage of gas generated from an organic material while simplifying the manufacturing process.

11 is a cross-sectional view illustrating a manufacturing process of a flexible display device according to an embodiment of the present invention.

As shown in FIG. 11, a flexible color filter 100 according to an embodiment of the present invention manufactured as described with reference to FIGS. 3 to 9 is disposed on a separately manufactured TFT + OLED substrate 200.

The TFT + OLED substrate 200 may be manufactured in any manner known in the field of flexible display technology, and the manufacturing process thereof is not particularly limited in the present invention. However, a separate sealing layer is not formed on the OLED layer 230.

Next, when the flexible color filter 100 and the TFT + OLED substrate 200 are bonded to each other using OCA or OCR, the flexible display device 10 shown in FIG. 10 is formed. Adhesion may be accomplished in any other manner known in the art of flexible display technology, and the process is not particularly limited in the present invention.

Meanwhile, in the embodiment of the present invention described above, a method of manufacturing a flexible OLED display device by combining a TFT + OLED substrate on which a OLED is formed on a TFT with a color filter has been described, but the present invention is not limited thereto. For example, in the case where a flexible liquid crystal display device is manufactured by inserting a liquid crystal layer between a TFT array substrate and a color filter instead of the OLED, it is also possible to modify the scope of the flexible display device according to the present invention Can be used.

It will be appreciated that the invention may be embodied in various forms without departing from the essential characteristics thereof, as set forth in the foregoing description.

It is therefore to be understood that the specified embodiments are to be considered in an illustrative rather than a restrictive sense and that the scope of the invention is indicated by the appended claims rather than by the foregoing description and that all such differences falling within the scope of equivalents thereof are intended to be embraced therein It should be interpreted.

100: Flexible color filter 110: Base film
120: isolation layer 130: protective layer
140: black matrix layer 150: colored layer
160: gas leakage prevention layer 170: carrier substrate
180: Protective film 190: Barrier film
200: TFT + OLED substrate 210: substrate film
220: TFT layer 230: OLED layer
300: adhesive layer

Claims (19)

A base film;
A separation layer on the base film;
A protective layer on the separation layer;
A black matrix (BM) layer on the protective layer;
A colored layer formed between the BM layers; And
A gas leakage preventing layer covering the entire BM layer and the colored layer;
A flexible color filter. The method according to claim 1,
Wherein the gas leakage preventing layer comprises a barrier film,
Flexible color filters. 3. The method of claim 2,
Wherein the barrier film comprises an organic layer in contact with the BM layer and the colored layer; And an inorganic layer formed on the organic layer.
Flexible color filters. The method of claim 3,
Wherein the organic layer is completely covered with the inorganic layer,
Flexible color filters. The method according to claim 1,
Wherein the gas leakage preventing layer comprises an inorganic film,
Flexible color filters. The method according to claim 1,
Wherein the base film is a barrier film,
Flexible color filters. The method according to claim 1,
Further comprising a barrier film adhered to a surface of the base film opposite to the surface in contact with the separation layer,
Flexible color filters. 6. The method according to any one of claims 3 to 5,
Wherein the inorganic layer or the inorganic film is a single film or a laminated film including a metal oxide or a metal nitride,
Flexible color filters. 6. The method according to any one of claims 3 to 5,
Wherein the inorganic layer or the inorganic film comprises any one of SiN _x , Al ₂ O ₃ , SiO ₂ , and TiO ₂ ,
Flexible color filters. 6. The method according to any one of claims 3 to 5,
Wherein the inorganic layer or the inorganic film is formed so as to prevent moisture permeation,
Flexible color filters. Applying a composition for forming an isolation layer on a carrier substrate to form a separation layer;
Applying a composition for forming a protective layer on the separation layer to form a protective layer;
Forming a black matrix (BM) layer on the protective layer and forming a colored layer therebetween;
Attaching a barrier film on the BM layer and the colored layer;
Attaching a protective film on the barrier film;
Removing the carrier substrate;
Attaching a flexible substrate film to a surface of the separation layer on which the carrier substrate has been removed; And
Removing the protective film;
≪ / RTI > Applying a composition for forming an isolation layer on a carrier substrate to form a separation layer;
Applying a composition for forming a protective layer on the separation layer to form a protective layer;
Forming a black matrix (BM) layer on the protective layer and forming a colored layer therebetween;
Forming an inorganic film on the BM layer and the colored layer;
Attaching a protective film on the inorganic film;
Removing the carrier substrate;
Attaching a flexible substrate film to a surface of the separation layer on which the carrier substrate has been removed; And
Removing the protective film;
≪ / RTI > 13. The method according to claim 11 or 12,
The flexible substrate film may be a barrier film,
Method of manufacturing a device of a flexible color filter. 13. The method according to claim 11 or 12,
Attaching a barrier film on the flexible substrate film;
Further comprising the steps of: A first base film;
A thin film transistor on the first base film;
An organic light-emitting diode (OLED) on the thin film transistor;
An adhesive layer on the OLED;
A gas leakage preventing layer on the adhesive layer;
A colored layer and a black matrix (BM) layer on the gas leakage preventing layer;
A protective layer on the colored layer and the BM layer;
A separation layer on the protective layer; And
A second base film on the separation layer;
And a flexible display device. A flexible display device comprising the flexible color filter of any one of claims 1 to 7. Fabricating a flexible color filter by the method of claim 11 or 12; And
Coupling the flexible color filter to a thin film transistor (TFT) array substrate;
Wherein the flexible display device comprises a flexible display device. 18. The method of claim 17,
The TFT array substrate includes a white organic light emitting diode (OLED)
A method of manufacturing a flexible display device. 19. The method of claim 18,
Wherein the TFT array substrate does not include an encapsulation layer covering the white OLED,
A method of manufacturing a flexible display device.

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