WO2016195323A1 - Filtre coloré souple, dispositif d'affichage électroluminescent organique souple comprenant ce dernier et son procédé de fabrication - Google Patents

Filtre coloré souple, dispositif d'affichage électroluminescent organique souple comprenant ce dernier et son procédé de fabrication Download PDF

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Publication number
WO2016195323A1
WO2016195323A1 PCT/KR2016/005601 KR2016005601W WO2016195323A1 WO 2016195323 A1 WO2016195323 A1 WO 2016195323A1 KR 2016005601 W KR2016005601 W KR 2016005601W WO 2016195323 A1 WO2016195323 A1 WO 2016195323A1
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Prior art keywords
layer
color filter
flexible
flexible color
black matrix
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PCT/KR2016/005601
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English (en)
Korean (ko)
Inventor
최용석
윤주인
서민수
최우
Original Assignee
동우화인켐 주식회사
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Priority claimed from KR1020160058290A external-priority patent/KR102146271B1/ko
Application filed by 동우화인켐 주식회사 filed Critical 동우화인켐 주식회사
Priority to CN201680031577.6A priority Critical patent/CN107667441B/zh
Priority to US15/579,091 priority patent/US11069750B2/en
Publication of WO2016195323A1 publication Critical patent/WO2016195323A1/fr

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • 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
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers

Definitions

  • the present invention relates to a flexible display device, and more particularly, to a flexible color filter for a display device, a flexible organic light emitting display device including the color filter, and a method of manufacturing the same.
  • LCDs liquid-crystal displays
  • OLEDs organic light-emitting diodes
  • OLED has the advantage of being able to realize a very light and thin screen, wide color reproduction range, fast response, and high contrast ratio (CR) compared to conventional LCD, and is also most suitable for implementing a flexible display. It is currently being actively developed as a display.
  • a white organic light-emitting diode (WOLED) using a white light source instead of a conventional blue light source has high efficiency, high resolution, and long life, and is realized as a large-area high-definition display as well as a variety of general lighting. Due to the applicability, research is being done in earnest by domestic and foreign researchers.
  • color filters are used to achieve full color.
  • the color filter used here forms a black matrix (also called BM) formed on a glass substrate, and forms red, green, blue, and white patterns thereon. will be.
  • BM black matrix
  • the glass substrate used in the color filter is large in weight and easily broken by an external small impact, there is a limit in portability and large screen display characteristics. Accordingly, a plastic substrate having a light weight, a strong impact, and a flexible characteristic is used.
  • Flexible displays are next-generation displays that can bend, bend, or roll freely in a variety of forms, including mobile & portable displays, wearable & fashionable displays, and paper-like displays. As it is possible to apply, the research and development is ongoing. Therefore, substrates of various components constituting the flexible display have been replaced by plastic substrates of polymer materials.
  • the plastic substrate can be manufactured by deposition or printing, thereby lowering the manufacturing cost, and is represented as a roll-to-roll process, unlike a conventional sheet unit process. Since the device can be manufactured, a low cost display device can be manufactured through mass production.
  • the plastic substrate has a lower transition temperature and a higher expansion rate due to temperature change than glass, the layers stacked thereon may be destroyed or deformed.
  • the substrate itself is flexible, there is a problem in that the processes applied to the existing glass substrate cannot be applied in the same way.
  • Korean Patent Publication No. 2010-0047029 mentions an electron beam low temperature curing method capable of curing at a temperature of 100 ° C. or lower in manufacturing a color filter for an electronic display.
  • Korean Patent Publication No. 2004-0097228 discloses separating a glass substrate from a transfer layer by irradiating light such as a laser to the separation layer after forming a separation layer, a thin film device, an adhesive layer, and a temporary substrate in order on the glass substrate. A method is disclosed.
  • the applicant has formed a separation layer (also called a release layer) or a separation layer and a protective layer on the glass substrate.
  • the present invention was completed by confirming that the above problems can be solved by manufacturing a color filter and then removing the glass substrate and adhering the base film.
  • an object of the present invention is to provide a flexible color filter and a method of manufacturing the same, which can obtain a high-definition pattern that is difficult to implement in a conventional plastic substrate, thermal instability is solved, and a substrate film of various materials can be applied.
  • Another object of the present invention is to provide a flexible (white) organic light-emitting display device and a method of manufacturing the same, which include a flexible color filter capable of solving thermal instability and applying a base film of various materials.
  • the present invention is a base film; Adhesive layer; Separation layer; Protective layer (optional component); Black matrix layer; It provides a flexible color filter having a structure in which a pixel layer formed between the black matrix layer; sequentially stacked.
  • the at least one layer selected from the group consisting of the base film, the separation layer, the protective layer, the black matrix layer, the pixel layer, and a combination thereof is characterized in that the shear stress change rate represented by the following equation is in the range of 40 to 95%:
  • SS 0 is the shear stress (MPa) measured at the initial curing at 15 to 30 °C
  • SS 1 means the shear stress (MPa) measured after 5 hours of curing at 15 to 30 °C)
  • At least one layer selected from the group consisting of the base film, the separation layer, the protective layer, the black matrix layer, the pixel layer, and a combination thereof is characterized in that the tensile modulus is in the range of 2 to 10 MPa.
  • the separation layer is characterized in that the peel force on the glass substrate is 1N / 25mm or less.
  • the separation layer is characterized in that the surface energy after peeling is in the range of 30 to 70 mN / m.
  • Forming a protective layer by coating a composition for forming a protective layer on the separation layer;
  • planarization layer-forming composition over the pixel layer to form a planarization layer (optional element);
  • the present invention also provides a flexible (white) organic light emitting display device including the flexible color filter.
  • Flexible color filter according to an embodiment of the present invention can obtain a high-definition pattern difficult to implement on a conventional plastic substrate, thermal instability is solved, it is possible to apply a base film of various materials.
  • the flexible color filter according to the embodiment of the present invention is easy to be applied to a curved body such as a column, and has high color reproduction characteristics compared to a conventional color filter due to a high definition, so that vivid image quality can be realized, and thus, flexible organic light emission is possible. It can be applied to a display device or a flexible white organic light emitting display device.
  • FIG. 1 is an exemplary cross-sectional structure of a flexible color filter according to an embodiment of the present invention.
  • 2 to 11 are cross-sectional views of each step according to a method of manufacturing a flexible color filter according to an embodiment of the present invention.
  • FIG. 12 is another exemplary cross-sectional structure of a flexible color filter according to a modified embodiment of the present invention.
  • FIG. 13 is an exemplary cross-sectional view of a flexible organic light emitting diode display including a flexible color filter according to an exemplary embodiment of the present invention.
  • FIG. 14 illustrates a detailed cross-sectional view of the flexible organic light emitting diode display illustrated in FIG. 13.
  • FIG. 15 illustrates another cross-sectional structure of a flexible organic light emitting diode display including a flexible color filter according to an exemplary embodiment of the present invention.
  • the present invention provides a flexible color filter that can produce a high-definition pattern by improving the thermal stability of the plastic substrate generated in the manufacturing process of the flexible color filter, has excellent heat resistance, and is not limited to the material of the plastic substrate.
  • the color filter is a key component for expressing color
  • the existing color filter process includes a high temperature process and various cleaning processes using a glass substrate.
  • the plastic substrate is weak in rigidity and has a low thermal deformation temperature, thermal deformation such as bending, warping, expansion, and shrinkage of the plastic substrate occurs during the process involving high temperature heat treatment.
  • thermal deformation such as bending, warping, expansion, and shrinkage of the plastic substrate occurs during the process involving high temperature heat treatment.
  • the process is directly performed on the plastic substrate, not only the heat treatment conditions and the like are limited, but also a problem in that the final fine pattern control is difficult is generated.
  • the present invention is to limit the polymer material of each layer constituting the color filter to a specific factor to ensure flexibility as a flexible color filter and does not cause permanent deformation, fracture or cracking, and is not a base film as a plastic substrate in the manufacturing process
  • FIG. 1 is a cross-sectional view illustrating a flexible color filter according to an embodiment of the present invention.
  • the flexible color filter 100 includes a base film 101, an adhesive layer 103, a separation layer 105, a protective layer 107, and a black matrix layer 113.
  • the pixel layers R, G, B, and W: 109 and the planarization layer 111 formed between the black matrix layers are sequentially stacked.
  • the polymer material of each layer is specified and referred to as an organic layer for convenience, and as the organic layer, the base film 101, the separation layer 105, and the protection layer.
  • the planarization layer 111 and the protective layer 107 may be additionally formed as necessary.
  • the flexible color filter 100 including the base film 101, the separation layer 105, the protective layer 107, the black matrix layer 113, the pixel layer 109, and the planarization layer 111 may be bent. Due to this, it can be applied to a flexible display applied to a curved surface, such as a column. At this time, when the curved surface is applied, a bending moment is generated, and shear stress is concentrated on the flexible color filter 100 by a load. . This concentrated shear stress results in permanent deformation, fracture or cracking of the flexible color filter 100. Therefore, when the material capable of sufficiently enduring the concentrated shear stress and recovering by deformation is applied to the organic layer, the flexible color filter 100 performs a sufficient role.
  • the shear stress and the tensile modulus parameters of the organic layer are adjusted.
  • the shear stress parameter measures the shear stress before and after curing of each organic layer material, and controls the difference in shear stress before and after curing.
  • Shear stress is a property in which properties change with temperature changes, and the rate of change is determined by a value measured in a certain temperature range before and after curing. In the embodiment of the present invention to determine the rate of change using the shear stress value measured in the range of 15 to 30 °C before and after curing.
  • the shear stress difference before and after the curing process allows to maintain the characteristics of the flexible color filter even after the coating and exposure process in the manufacturing process.
  • Equation 1 the rate of change of shear stress of the organic layer according to the embodiment of the present invention is defined by Equation 1:
  • SS 0 is the shear stress (MPa) measured at the initial curing at 15 to 30 °C
  • SS 1 means the shear stress (MPa) measured after 5 hours of curing at 15 to 30 °C)
  • the shear stress change rate of the organic layer is preferably in the range of 40 to 95%, preferably 50 to 95%. If the rate of change in shear stress is less than the above range, the restoring force is weak, so that the original state cannot be restored. On the contrary, if the shear stress change rate exceeds the above range, cracking occurs.
  • the organic layer according to the embodiment of the present invention adjusts the tensile modulus.
  • Tensile modulus is the applied tensile stress divided by the strain (rate) that occurs at that stress level.
  • the flexible color filter is a mechanical property of how much it can withstand without permanently deforming and breaking under elastic limits under flexural load. It is a factor that affects the function and life of (100).
  • the tensile modulus was made into a sample of 5cm in length and 1cm in width, and then loaded using a Autograph (manufactured by Shimadzu Co., Ltd.) at a speed of 4 mm / min in a vertical direction at 25 ° C. After measuring the force of the film is calculated from the thickness, force, calculation amount of the film.
  • the tensile modulus of the organic layer according to the invention ranges from 2 to 10 MPa, more preferably from 2 to 7 MPa. If the tensile modulus of elasticity is less than the above range, deformation or breakage may occur during use of the flexible color filter 100. On the contrary, if the tensile modulus exceeds the above range, a lot of cracks may occur. use.
  • the flexibility as the flexible color filter is secured and the occurrence of permanent deformation, fracture or cracking is suppressed.
  • the material of the organic layer that satisfies these properties may be a polymer material.
  • the polymer material is polyacrylate, polymethacrylate (eg PMMA), polyimide, polyamide, polyamic acid, polyvinyl alcohol, polyolefin (eg PE, PP), polystyrene, polynorbornene, Polymaleimide, polyazobenzene, polyester (e.g. PET, PBT), polyarylate, polyphthalimidine, polyphenylenephthalamide, polyvinylcinnamate, polycinnamate, coumarin polymer, chalcone polymer, aromatic It includes one kind of material selected from the group consisting of acetylene polymer, phenylmaleimide copolymer, copolymers thereof, and blends thereof.
  • the polymer material includes a base film 101, a separation layer 105, a protective layer 107, a black matrix layer 113, a pixel layer 109, a planarization layer 111, and a combination thereof in each layer. Applicable to at least one floor selected from. For example, the same or similar polymer may be applied to each layer, or only polyacrylate may be applied to the separation layer 105, and the other layers may be made of materials known in the art.
  • the base film 101 may be used as an optical transparent film without limitation, but it is preferable to use a film excellent in flexibility, transparency, thermal stability, moisture shielding, retardation uniformity, isotropy, and the like. By using the base film 101, it is possible to prevent damage and easily handle the color filter during manufacture, transportation and storage.
  • the material of the base film 101 may be a polymer material as described above, or polyethylene terephthalate, polyethylene, polystyrene, polycarbonate, polyimide, or the like, which are commonly used.
  • the adhesive layer 103 is for bonding the base film 101 and the separation layer 105 to be described later.
  • the adhesive layer 103 may be corona treated, flame treated, or plasma treated with a polarizing film and / or a protective film.
  • Surface treatment such as a process, ultraviolet irradiation, a primer application
  • the adhesive layer 103 may be formed by being coated in the form of a coating composition on one surface of the base film 101 or the separation layer 105 or laminated in a film state.
  • the material of the adhesive layer 103 is not particularly limited in the present invention, and may be a polyacrylate, an epoxy resin, or the like that is commonly used.
  • the separation layer 105 is a layer formed for peeling and the glass substrate on which the color filter is formed in the manufacturing process of the flexible color filter 100 of the present invention.
  • the separation layer 105 should be separated from the glass substrate for manufacturing the color filter through a physical force, and after separation, the separation layer 105 is laminated with the base film 101 through the adhesive layer 103 described above. Accordingly, the separation layer 105 may have a peel force of 5 N / 25 mm or less, preferably 1 N / 25 mm, and a surface energy of 30 to 70 mN / m after peeling.
  • the surface energy is a factor related to the contact angle, and when the surface energy after peeling is within the above range, it has low adaptability and has excellent coating properties when applying the above-described adhesive layer composition, thereby improving adhesive properties.
  • the protective layer 107 is formed on the separation layer 105 as a layer for protecting the separation layer 105, and may have an encapsulate form to surround both sides of the separation layer 105.
  • This protective layer 107 is an optional component that can be omitted as needed.
  • the pixel layer 109 is a layer for color implementation, and is typically a black matrix layer 113 together with a patterned red, green, blue, and white pixel layer 109. This is arranged together.
  • the pixel layer 109 includes at least one of three primary colors and white, and the black matrix layer 113 is positioned between each pixel patterned as a light shielding layer to block light in portions except the pixel region. .
  • the planarization layer 111 is a layer for correcting the surface level of the pixel layer 109 and improving the flatness, which is also referred to as an overcoat layer (OC layer).
  • OC layer overcoat layer
  • the material of the planarization layer 111 is not particularly limited in the embodiment of the present invention, and may be a polyacrylate, polyimide, polyester, or the like that is commonly used.
  • the planarization layer 111 is also an optional component.
  • each of the organic layers is not particularly limited in the exemplary embodiment of the present invention, but the thinner the thinner the thinner the flexible color filter and the flexible display device to be applied, the better the thickness of each organic layer is several micrometers ( ⁇ m) or less. .
  • the flexible color filter 100 according to the embodiment of the present invention
  • Epoxy-modified acrylate-based material and the adhesive layer 103 of 0.5 to 30 ⁇ m thickness Epoxy-modified acrylate-based material and the adhesive layer 103 of 0.5 to 30 ⁇ m thickness
  • Polycycloolefin-based material and a protective layer 107 of 0.5 to 5 ⁇ m thickness Polycycloolefin-based material and a protective layer 107 of 0.5 to 5 ⁇ m thickness
  • a pixel layer 109 0.5 to 5 mu m thick
  • the polyacrylic material may be a planarization layer 111 having a thickness of 0.5 to 5 ⁇ m.
  • the flexible color filter 100 does not directly manufacture a flexible plastic base film, but first forms a separation layer (and a protective layer) on a glass substrate, and then forms a color thereon. A filter is made and later the separation layer is peeled off to bond the base film.
  • FIGS. 2 to 11 illustrate cross-sectional views of each step according to a method of manufacturing the flexible color filter 100 according to an exemplary embodiment of the present invention.
  • a black matrix (BM) layer 113 is formed on the passivation layer 107, and red, green, and blue colors therebetween. ), Forming a white pixel layer 109,
  • planarization layer 111 by coating the composition for forming the planarization layer over the entire pixel layer 109;
  • the adhesive layer 117 is bonded to the planarization layer 111 with the protective film 119 coated on one side thereof.
  • the forming of the protective layer 107 and the forming of the planarization layer 111 may be omitted if necessary, and the black matrix layer 113 and the pixel layer 109 may be referred to as color filter layers.
  • a separation layer 105 is formed by coating a composition for forming a separation layer (see FIG. 2).
  • the coating method may use a conventional wet coating method to obtain a desired thickness, wherein the wet coating method is a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater), an ink jet, etc. Coating apparatus may be used.
  • the separation layer forming composition is cured after coating to form a separation layer (105).
  • the curing step is performed by heating with an oven, a hot plate or the like.
  • the temperature and time may vary depending on the composition, but, for example, is made through heat treatment under conditions of 10 to 120 minutes at 80 to 250 ° C.
  • the protective layer forming composition is coated on the separation layer 105 to form a protective layer 107 (see FIG. 3).
  • the separation layer 105 may be peeled off by a physical force, and since the peeling force is very weak, the protective layer 107 may be formed in a form that surrounds both sides of the separation layer 105.
  • the coating method and the curing process of the protective layer-forming composition are as described above.
  • a black matrix layer 113 is formed on the formed separation layer 105 or the protective layer 107, and red, green, blue, and white pixels are interposed therebetween.
  • Form layer 109 (see FIGS. 4 and 5).
  • the respective composition for forming the pixel layer for color expression is applied and exposed, developed and thermally cured in a predetermined pattern.
  • the order of the colors of the pixel layer 109 may be arbitrarily selected.
  • the black matrix layer 113 and the pixel layer 109 may be changed according to the purpose of forming the aforementioned order.
  • the coating method and the curing process of the black matrix layer 113 and the pixel layer 109 are as described above.
  • planarization layer forming composition is coated on the entire formed pixel layer 109 to form the planarization layer 111 (see FIG. 6).
  • the planarization layer 111 is formed over the entire pixel layer 109 to protect the patterned pixel layer and to planarize the color filter surface when forming the pixel electrode.
  • the planarization layer 111 coating method and the curing process are as described above.
  • the protective film 119 coated on one side of the adhesive layer 117 is bonded to the planarization layer 111 (see FIG. 7).
  • the protective film 119 uses a material whose physical properties are controlled to have appropriate mechanical strength, thermal stability, moisture shielding, and transparency so as to protect the flexible color filter 100 of the present invention.
  • a material whose physical properties are controlled to have appropriate mechanical strength, thermal stability, moisture shielding, and transparency so as to protect the flexible color filter 100 of the present invention.
  • Examples thereof include polyethylene, polypropylene, polystyrene, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polyetherimide, polyvinyl chloride, and the like.
  • the pressure-sensitive adhesive layer 117 is not particularly limited in the present invention, a composition commonly used in this field is possible. Typically, one selected from the group consisting of acrylic resins, silicone resins, polyesters, polyurethanes, polyamides, polyvinyl ethers, modified polyolefins, vinyl acetate / vinyl chloride copolymers, epoxy, fluorine, rubber, and combinations thereof Can be.
  • the pressure-sensitive adhesive layer 117 may be directly applied to the protective film 119, or may be formed by applying an adhesive sheet to the protective film 110, the thickness of the protective film 119 and the pressure-sensitive adhesive layer 117 is protected It can be adjusted according to the material and adhesive force of the film.
  • the glass substrate 115 and the separation layer 105 are separated (see FIG. 8).
  • the separation layer 105 is peeled off to remove the glass substrate 115 used for color filter formation.
  • the peeling process is carried out at room temperature, for example, it may be performed by a physical peeling method for removing the glass substrate.
  • the adhesive layer 103 is adhered to the base film 101 coated on one side with the separation layer 105 (see Fig. 9).
  • the base film 101 is flexible and can be selected to suit the desired purpose from the above materials.
  • the adhesive layer 103 is used to bond the base film 101 and the color filter, and is disposed on one surface of the base film 101 or the separation layer 105.
  • the adhesive which can be used is a photocurable adhesive, and since a separate drying process is not required after photocuring, productivity is improved by simplifying a manufacturing process.
  • the photocurable adhesive used in the embodiment of the present invention may be formed using a photocurable adhesive used in the art without particular limitation.
  • the composition may include an epoxy compound or an acrylic monomer.
  • electron beams, proton rays, neutral magnetic rays, and the like may be used in addition to electromagnetic waves such as ultraviolet rays such as far ultraviolet rays, ultraviolet rays, near ultraviolet rays, infrared rays, X rays, and ⁇ rays. Curing by ultraviolet irradiation is advantageous from the curing rate, the availability of the irradiation apparatus, the price, and the like.
  • a high pressure mercury lamp an electrodeless lamp, an ultra high pressure mercury lamp carbon arc lamp, a xenon lamp, a metal halide lamp, a chemical lamp, a black light, or the like can be used.
  • the protective film 119 and the pressure-sensitive adhesive layer 117 bonded in the previous step are removed in order to stack the touch sensor, the POL (polarizing plate) integrated touch sensor, or the window film, and finally, as illustrated in FIG.
  • the color filter 100 can be obtained.
  • the color filter formation including the high temperature process is performed on the glass substrate, and then the glass is separated using the separation layer 105 at room temperature.
  • the substrate is removed and the base film 101 made of plastic is laminated.
  • the flexible color filter according to an embodiment of the present invention not only prevents thermal deformation of the conventional base film but also ensures high reliability because there is no degradation or malfunction of the conventional base film, and the dimension of the color filter pattern is precise and fine. More precise pixels can be realized.
  • various plastic materials may be applied as the base film according to the purpose.
  • the flexible color filter having the above-described structure may be sold in the state before the glass substrate is peeled off according to the needs of the manufacturer or the request of the purchaser.
  • the protective layer 107 is formed on the separation layer 105.
  • This protective layer 107 may be optional.
  • the black matrix layer 113 is formed on the separation layer 105 or the protective layer 107, and the pixel layer 109 is formed between the black matrix layers 113 (see FIGS. 4 and 5).
  • the planarization layer forming composition is coated on the entire formed pixel layer 109 to form the planarization layer 111 (see FIG. 6).
  • the planarization layer 111 is also optional.
  • the adhesive layer 117 is bonded to one side of the protective film 119 is applied to the flattening layer 111 (see Fig.
  • a touch sensor or a POL-integrated touch sensor may be bonded and shipped.
  • the product may be shipped as a flexible color filter in which a window film is bonded on the bonded touch sensor or the POL integrated touch sensor.
  • the flexible color filter according to the embodiment of the present invention may be manufactured to have a cross-sectional structure as shown in FIG. 12 as another modified embodiment.
  • a protective layer 107 may be further formed by coating a composition for forming a protective layer on the separation layer 105.
  • the planarization layer 111 is formed on the entire pixel layer 109 to form a planarization layer 111.
  • the base film coated on one surface of the adhesive layer is bonded to the planarization layer 111.
  • the base film is directly bonded on the pixel layer 109.
  • the flexible color filter manufactured according to the manufacturing process may include a pixel formed between the base film, the adhesive layer, the planarization layer 111, the black matrix layer 113, and the black matrix layer 113.
  • the color filter layer, the separation layer 105, and the glass substrate 115 including the layer 109 are sequentially stacked in a downward direction.
  • the flexible color filter having such a structure may be sold in a state before the glass substrate 115 is peeled off at the request of a manufacturer or a purchaser, and may be sold in a state in which the glass substrate 115 is peeled off.
  • a protective layer may be further formed between the color filter layer and the separation layer 105 to protect the separation layer 105.
  • At least one layer selected from the group consisting of the base film, the separation layer 105, the black matrix layer 113, the pixel layer 109, the planarization layer 111, and a combination thereof is a shear stress represented by Equation 1 above.
  • the change rate is characterized by including a polymer material satisfying the range of 40 to 95%.
  • At least one layer selected from the group consisting of the base film, the separation layer 105, the black matrix layer 113, the pixel layer 109, the planarization layer 111, and a combination thereof has a tensile modulus of 2 to 10 MPa. It is another feature to include a phosphorus polymer material,
  • Peeling force of the separation layer 105 to the glass substrate 115 is 1N / 25mm or less, the separation layer 105 is characterized in that the surface energy after peeling the glass substrate in the range of 30 to 70 mN / m.
  • An additional process may be added to the flexible color filter manufactured according to the first embodiment of the flexible color filter described above to manufacture a flexible color filter in which a touch sensor or a POL integrated touch sensor or window film is laminated.
  • a flexible color filter in which a touch sensor or POL (polarizer) integrated touch sensor or touch sensor and window film, or POL (polarizer) integrated touch sensor and window film are laminated on the planarization layer 111 illustrated in FIG. 11 is manufactured. You can also sell. If the formation of the planarization layer 111 is omitted, the touch sensor or the POL integrated touch sensor or the touch sensor and the window film or the POL integrated polarization plate and the window film may be laminated on the pixel layer 109. have.
  • the 700 ⁇ m soda-lime glass substrate was cleaned with isopropyl alcohol, and then subjected to an O 2 plasma treatment (300 sec at a DC power of 500 sc of O 2 gas, 10 mTorr process pressure) to modify the substrate surface to hydrophilicity.
  • composition for forming a separation layer including the composition shown in Table 1 on the glass substrate subjected to the plasma treatment and dried for 230 minutes 30 minutes to form a separation layer of 0.3 ⁇ m thickness.
  • a cycloolefin protective layer was applied on the formed separation layer and then baked at 230 ° C. for 30 minutes to obtain a film having a thickness of 2 ⁇ m.
  • the rate of change of shear stress at 25 ° C. was measured for the obtained film using a rheometer (MCR-302, manufactured by Anton Paar). Shear stress was set to 10 MPa. The stress after the initial measurement and after 5 hours was obtained, and the change rate is shown in Table 1 below.
  • the film was made into a sample having a length of 5 cm and a width of 1 cm, and then loaded using a Autograph device (manufactured by Shimadzu Co., Ltd.) at 25 ° C. at a speed of 4 mm / min in a vertical direction to increase the chuck spacing.
  • a Autograph device manufactured by Shimadzu Co., Ltd.
  • Tensile modulus was calculated from the thickness, force, and amount of calculation of the film previously measured in micrometers, and the results are shown in Table 1 below.
  • the 700 ⁇ m soda-lime glass substrate was cleaned with isopropyl alcohol, and then subjected to an O 2 plasma treatment (300 sec at a DC power of 500 sc of O 2 gas, 10 mTorr process pressure) to modify the substrate surface to hydrophilicity.
  • a protective film (15 ⁇ m PSA / 38 ⁇ m PET, manufactured by Fujimori) coated with pressure-sensitive adhesive was separated from the protective layer After bonding to the formed soda-lime glass substrate, the film and the glass substrate were cut to a width * length of 25 mm * 100 mm size to prepare a specimen, and then the peel force on the glass substrate and the surface energy after peeling were measured.
  • the peeling force with respect to the glass substrate was measured on the conditions of the peeling speed of 300 mm / min, and 90 degrees using the measuring machine (Auto gragh (UTM) equipment, the same Shimadzu Corporation make).
  • a black matrix layer (TBK-04) and patterned pixel layers (TR-800, YG-800, and YB-800) were formed on the passivation layer.
  • a flattening film (DW-LT09) was formed on the pixel layer, and then the flattening layer and the adhesive were attached to a protective film (15 ⁇ m PSA / 38 ⁇ m PET, Fujimori).
  • the glass substrate was separated from the separation layer at room temperature and separated, and then a base film coated with an adhesive (KR15P, ADEKA) was laminated to prepare a color filter.
  • Example 1 The composition for forming a separation layer of Example 1 was prepared in the same manner except for using the composition of Table 1 in Table 1 instead of Table 1.
  • the flexible color filter according to the embodiment of the present invention was able to perform the process at a heat treatment temperature of 230 °C by using a glass substrate instead of a conventional plastic substrate.
  • the flexible color filter according to an exemplary embodiment of the present invention may be formed together on an organic light-emitting diode or a white organic light emitting diode substrate to implement a flexible (white) organic light emitting diode display.
  • FIG. 13 illustrates a cross-sectional structure diagram of a flexible organic light emitting diode display including a flexible color filter according to an exemplary embodiment of the present invention
  • FIG. 14 illustrates a detailed cross-sectional view of the flexible organic light emitting diode display illustrated in FIG. 13.
  • the flexible organic light emitting display device including the flexible color filter according to the exemplary embodiment of the present invention includes an organic light emitting diode in which an organic light emitting layer of R (red), G (green), and B (blue) is formed.
  • OLED organic light emitting diode
  • the flexible color filter assembly B is bonded to the film assembly A by the adhesive layer 240.
  • FIG. 13 first, at least a thin film transistor 210 and an organic light emitting layer of R, G, and B (or W, R, G, and B) on a film 200 of an organic light emitting diode (OLED) film assembly (A). 220, an encapsulation 230, and one or more insulating layers (such as an interlayer insulating film) are formed.
  • OLED organic light emitting diode
  • FIG. 14 Detailed configuration of the organic light emitting device (OLED) film assembly (A) shown in FIG. 14 is just one example to help understanding of the present invention, and the configuration and structure of the organic light emitting device (OLED) film assembly (A) It is not limited to this.
  • a gate electrode is formed on the film 200 of the OLED film assembly A, and a gate insulating layer INS is formed on the film 200 including the gate electrode. Formed.
  • An active layer (Active) is formed on the gate insulating layer (INS), the active layer (Active) is doped with n-type or p-type impurities in the source (S) / drain (D) region, and the source (S) region and And a channel region connecting the drain (D) region.
  • An insulating layer Buffer1 is formed on the active layer Active.
  • the insulating layer Buffer1 is for protecting a channel of the active layer, and the active layer except for a region in contact with the source (S) / drain (D) electrode. It may cover the entirety, but is not necessarily limited thereto, and may be formed only on the upper portion of the channel.
  • Source (S) and drain (D) electrodes contacting the active layer (Active) are formed on the insulating layer (Buffer1), so as to cover the source (S) and drain (D) electrodes on the insulating layer (Buffer1).
  • the passivation layer Buffer2 is formed. Through this process, it can be seen that a thin film transistor is formed in the OLED film assembly (A).
  • an organic light emitting diode is formed to be electrically connected to one of the source (S) and drain (D) electrodes.
  • the organic light emitting diode forms a first electrode (Anode) connected to one of the source (S) and drain (D) electrodes, and forms the organic layers (R, G, B) on the first electrode (Anode).
  • the second electrode (Cathode) is formed on the organic layers R, G, and B.
  • An encapsulation portion may be further formed on the second electrode as a protective layer.
  • the OLED film assembly A shown in FIG. 14 has the same technical configuration as the OLED film assembly A shown in FIG. 13 (that is, at least the thin film transistors 210 and R on the film 200). , G, B organic light emitting layer 220, an encapsulation portion 230, and at least one insulating layer (interlayer insulating film, etc.) is formed.
  • an OLED in which at least the thin film transistor 210, the R, G, and B organic light emitting layers 220, the encapsulation 230, and one or more insulating layers (such as an interlayer insulating layer) are formed on the film 200.
  • the flexible color filter (FCF) 100 is adhered to the film array A via the adhesive layer 240, the flexible organic light emitting diode display may be obtained.
  • the flexible color filter (FCF) 100 is disposed between the base film 101, the adhesive layer 103, the separation layer 105, the black matrix layer 113, and the black matrix layer 113.
  • the pixel layer 109 and the planarization layer 111 formed thereon are a flexible color filter sequentially stacked. Of course, the planarization layer 111 may be removed as necessary.
  • one of an anti-reflection (AR) film, a touch sensor, or a touch sensor and a window film may be further laminated on the flexible color filter FCF 100.
  • the flexible color filter FCF 100 in which the AR film, the touch sensor, or the “touch sensor and window film” is laminated may be referred to as the flexible color filter assembly B.
  • the flexible color filter (FCF) 100 may have a structure in which a protective layer is further formed to protect the separation layer between the separation layer 105 and the black matrix layer 113.
  • a separation layer 105 is formed on a glass substrate (not shown in the process, and thus is not shown), and a pixel is formed between the black matrix layer 113 and the black matrix layer 113 on the separation layer 105.
  • a color filter layer including the layer 109 is formed, and a planarization layer 111 is formed on the color filter layer.
  • the glass substrate is separated from the separation layer 105.
  • the second base film 101 having the adhesive layer 103 coated on one surface thereof is adhered to the separation layer 105 to manufacture a flexible color filter (FCF, 100).
  • the flexible color filter (FCF) 100 When the flexible color filter (FCF) 100 is manufactured as described above, the thin film transistor 210, the organic light emitting layer 220 of R, G, and B, the encapsulation unit 230, and the at least one insulating layer are formed on the film 200.
  • the flexible organic light emitting display device including the flexible color filter 100 as illustrated in FIG. 14 may be manufactured. have.
  • the 'reflection prevention (AR) film' or 'touch sensor on the planarization layer 111 on the second base film One of the 'touch sensor and window film' can be laminated.
  • the anti-reflective (AR) film or the touch on the planarization layer 111 After adhering the protective film or the first base film before adhering the flexible color filter 100 on the OLED film assembly A, the anti-reflective (AR) film or the touch on the planarization layer 111. After laminating and bonding one of the sensor or the touch sensor and the window film, the flexible color filter 100 and the OLED film assembly A may be adhered to each other.
  • AR anti-reflective
  • FIG. 15 illustrates another cross-sectional structure diagram of a flexible organic light emitting diode display including a flexible color filter according to an exemplary embodiment of the present invention, and particularly illustrates a cross section of the flexible white organic light emitting diode display.
  • a white organic light emitting diode (W-OLED) film having at least a thin film transistor 310, a white (W) organic light emitting layer 320, an encapsulation portion 330, and at least one insulating layer formed on the film 300.
  • Assembly (C)
  • FCF, 100 a flexible color filter adhered to the white organic light emitting element (W-OLED) film assembly (C) through an adhesive 340.
  • the flexible color filter (FCF, 100) is illustrated in FIG.
  • the pixel layer 109 and the planarization layer 111 formed between the base film 101, the adhesive layer 103, the separation layer 105, the black matrix layer 113, and the black matrix layer 113 are formed.
  • Flexible color filters stacked sequentially.
  • the planarization layer 111 may be removed as necessary.
  • the flexible white organic light emitting diode display as a deformable embodiment may further include a polarizing plate integrated touch sensor POL-TS bonded on the flexible color filter FCF 100.
  • the flexible white organic light emitting diode display may further include a touch sensor TS or a touch sensor and a window film bonded to the flexible color filter FCF 100.
  • the flexible color filter (FCF) 100 may further include a protective layer formed to protect the separation layer between the separation layer 105 and the black matrix layer 113.
  • the flexible color filter (FCF) 100 in which the polarizing plate integrated touch sensor (POL-TS) or the touch sensor or 'touch sensor and window film' are bonded may be referred to as a flexible color filter assembly (D).
  • the flexible white organic light emitting diode display illustrated in FIG. 15 may also be regarded as belonging to the category of the flexible organic light emitting diode display, and may be collectively referred to as one of the flexible organic light emitting diode display.
  • the material, the peeling force of the separation layer on the glass substrate, the surface energy range after the separation layer peeling, etc. are the same as the flexible color filter 100 described in detail with reference to Figures 1 to 11 will be omitted below.
  • the detailed configuration of the white organic light emitting diode (W-OLED) film assembly (A) shown in FIG. 15 is also merely one example to help understanding of the present invention, and the white organic light emitting diode (W-OLED) film assembly (A) is shown. ) Is not limited thereto.
  • a separation layer 105 is formed on a glass substrate in order to manufacture a flexible color filter (FCF) 100.
  • FCF flexible color filter
  • a color filter layer including a black matrix layer 113 and a pixel layer 109 formed between the black matrix layer 113 is formed on the separation layer 105, and the planarization layer 111 is formed on the color filter layer. To form.
  • a protective film or a first base film coated on one surface of the adhesive layer is bonded to the planarization layer 111, and then the separation layer 105 is separated from the glass substrate.
  • a W-OLED film assembly (C) having at least a thin film transistor 310, a red, green, blue, and white organic light emitting layer 320, an encapsulation portion 330, and at least one insulating layer formed on the film 300.
  • the second base film 101 is bonded to the flexible substrate to manufacture the flexible white organic light emitting diode display in which the flexible color filter (FCF, 100) is adhered to the W-OLED film assembly (C).
  • the protective film or the first base film is separated before or after the flexible color filter (FCF, 100) is adhered to the W-OLED film assembly (C), and the upper portion of the second base film
  • the flexible white organic light emitting diode display may be manufactured by laminating and bonding one of a 'polarizing plate integrated touch sensor (POL-TS)', 'touch sensor', or 'touch sensor and window film' on the planarization layer 111.
  • POL-TS 'polarizing plate integrated touch sensor
  • the method may further include forming a protective layer for protecting the separation layer between the separation layer 105 and the black matrix layer 113.
  • the flexible organic light emitting display device including the flexible color filter 100 according to the embodiment of the present invention has been solved due to thermal deformation of a plastic material, an automatic device requiring bending and flexibility, It can be freely applied to various fields such as smart phones, displays, solar cells, and electronic paper.
  • the flexible color filter according to an exemplary embodiment of the present invention may be applied as a color filter of a flexible (white) organic light emitting display device.

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  • Optical Filters (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

La présente invention concerne un filtre coloré souple pour un dispositif d'affichage souple, un dispositif d'affichage électroluminescent organique souple comprenant le filtre coloré, et son procédé de fabrication et, plus spécifiquement, un filtre coloré souple présentant une structure dans laquelle un film de base, une couche adhésive, une couche de séparation, une couche protectrice, une couche de matrice noire, une couche de pixels formée entre la couche de matrice noire et une couche de planarisation sont empilés séquentiellement. Le filtre coloré souple présentant la structure peut être fabriqué sur un substrat de verre, ces qui permet d'assurer les avantages de la résolution d'un problème de déformation thermique d'un substrat en matière plastique dans un traitement à haute température pour la mise en oeuvre d'un filtre coloré, permettant un pas fin d'un motif, qui ne peut pas être mis en oeuvre sur un substrat en matière plastique, et permettant une diversification sans limitations pour un matériau d'un film de base .
PCT/KR2016/005601 2015-06-03 2016-05-27 Filtre coloré souple, dispositif d'affichage électroluminescent organique souple comprenant ce dernier et son procédé de fabrication WO2016195323A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201680031577.6A CN107667441B (zh) 2015-06-03 2016-05-27 柔性滤色器、包括该柔性滤色器的柔性有机发光显示设备及其制作方法
US15/579,091 US11069750B2 (en) 2015-06-03 2016-05-27 Flexible color filter, flexible organic light emitting display device comprising same, and manufacturing method therefor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20150078385 2015-06-03
KR10-2015-0078385 2015-06-03
KR10-2016-0058290 2016-05-12
KR1020160058290A KR102146271B1 (ko) 2015-06-03 2016-05-12 플렉서블 컬러필터와 그를 포함하는 플렉서블 유기 발광 표시 장치 및 그 제조방법

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000039656A (ko) * 1998-12-15 2000-07-05 김영환 기판 외측에 부착되는 컬러필터를 포함하는 액정표시장치
KR20050011944A (ko) * 2003-07-24 2005-01-31 주식회사 하이닉스반도체 반도체 소자의 제조방법
KR20050068794A (ko) * 2003-12-30 2005-07-05 엘지.필립스 엘시디 주식회사 유기전계 발광소자와 그 제조방법
KR20130049106A (ko) * 2011-11-03 2013-05-13 엘지디스플레이 주식회사 플렉서블 표시장치 및 이의 제조방법
KR20140085306A (ko) * 2012-12-27 2014-07-07 엘지디스플레이 주식회사 플렉서블 유기 발광 표시 장치 및 플렉서블 유기 발광 표시 장치 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000039656A (ko) * 1998-12-15 2000-07-05 김영환 기판 외측에 부착되는 컬러필터를 포함하는 액정표시장치
KR20050011944A (ko) * 2003-07-24 2005-01-31 주식회사 하이닉스반도체 반도체 소자의 제조방법
KR20050068794A (ko) * 2003-12-30 2005-07-05 엘지.필립스 엘시디 주식회사 유기전계 발광소자와 그 제조방법
KR20130049106A (ko) * 2011-11-03 2013-05-13 엘지디스플레이 주식회사 플렉서블 표시장치 및 이의 제조방법
KR20140085306A (ko) * 2012-12-27 2014-07-07 엘지디스플레이 주식회사 플렉서블 유기 발광 표시 장치 및 플렉서블 유기 발광 표시 장치 제조 방법

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