WO2017171324A1 - Flexible color filter and manufacturing method therefor - Google Patents

Flexible color filter and manufacturing method therefor Download PDF

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Publication number
WO2017171324A1
WO2017171324A1 PCT/KR2017/003251 KR2017003251W WO2017171324A1 WO 2017171324 A1 WO2017171324 A1 WO 2017171324A1 KR 2017003251 W KR2017003251 W KR 2017003251W WO 2017171324 A1 WO2017171324 A1 WO 2017171324A1
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WO
WIPO (PCT)
Prior art keywords
layer
color filter
separation
flexible color
protective layer
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PCT/KR2017/003251
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French (fr)
Korean (ko)
Inventor
박성호
송선영
Original Assignee
동우 화인켐 주식회사
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Publication of WO2017171324A1 publication Critical patent/WO2017171324A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J3/00—Spectrometry; Spectrophotometry; Monochromators; Measuring colours
    • G01J3/46—Measurement of colour; Colour measuring devices, e.g. colorimeters
    • G01J3/50—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors
    • G01J3/51—Measurement of colour; Colour measuring devices, e.g. colorimeters using electric radiation detectors using colour filters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G02B5/3033—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid
    • G02B5/3041—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state in the form of a thin sheet or foil, e.g. Polaroid comprising multiple thin layers, e.g. multilayer stacks

Definitions

  • the present invention relates to a flexible color filter and a method of manufacturing the same, and more particularly, to a flexible color filter and a method of manufacturing the same on a carrier substrate.
  • flat panel displays include liquid-crystal displays (LCDs) and organic light-emitting diode (OLED) displays.
  • LCDs liquid-crystal displays
  • OLED organic light-emitting diode
  • OLED has the advantages of being able to realize very light and thin screen, wide color reproduction range, fast response time, high contrast ratio, etc., as well as the most suitable display for flexible display. Is being developed.
  • a white OLED display using a white light source has high efficiency, high resolution, and long life, and is being researched in earnest by domestic and foreign researchers because of its wide application of high resolution and wide application possibilities for general lighting.
  • the color filter is used to realize full color in the white OLED display.
  • the color filter includes red, green, and blue colored areas, and combines the light passing through them to express color, and black is generally used to block light in portions except pixel areas and to prevent color mixing at the boundary of each colored layer.
  • a matrix pattern is formed and a colored layer is patterned on it.
  • the black matrix pattern when the adhesion of the black matrix pattern is not sufficient, the black matrix pattern may be damaged when the patterning is repeated to form the colored region, which may cause problems such as light leakage or poor color reproducibility. .
  • the technique of using the buffer layer to improve the adhesion of the membrane is disclosed in Korean Patent No. 10-0325119.
  • the disclosed method forms a buffer layer on the overcoat layer in order to improve the adhesion between the overcoat layer for maintaining the protection and surface smoothness of the colored layer in the color filter substrate of the liquid crystal display and the transparent conductive film layer to which the voltage for driving the liquid crystal is applied. It forms a transparent conductive film layer on it.
  • the present invention is to solve the problems of the prior art, to provide a flexible color filter and a method of manufacturing the same to improve the color reproducibility by improving the adhesion between the black matrix layer and the lower layer or the substrate of the color filter. Let's do that task.
  • Another object of the present invention is to provide a flexible color filter and a method of manufacturing the same, which can achieve a fine resolution of the color filter by improving the adhesion between the black matrix layer and the lower layer or the substrate of the color filter, thereby obtaining a high resolution.
  • an aspect of the present invention is a separation layer; A protective layer formed on the separation layer; A black matrix (BM) layer formed on the protective layer; And it comprises a colored layer formed between the BM layer, the separation load with the lower layer of the BM layer provides a flexible color filter of 2.5 N / mm 2 or more.
  • BM black matrix
  • the protective layer may be formed to surround the side of the separation layer.
  • the flexible color filter of the present invention may further include a base film disposed under the separation layer, and may further include an overcoat layer formed on the BM layer and the colored layer.
  • the protective layer may include at least one of an organic insulating layer and an inorganic insulating layer.
  • a flexible display device including the flexible color filter as described above.
  • a method of manufacturing a flexible color filter may include forming a separation layer by applying a composition for forming a separation layer on a carrier substrate; Forming a protective layer on the separation layer; Forming a black matrix (BM) layer on the passivation layer, and forming a colored layer therebetween; And removing the carrier substrate, wherein the separation load with the lower layer of the BM layer is at least 2.5 N / mm 2 .
  • BM black matrix
  • the protective layer may be formed by applying or depositing a protective layer forming composition.
  • the method of manufacturing the flexible color filter of the present invention may further include forming an overcoat layer on the BM layer and the colored layer.
  • the method may further include attaching a base film on a surface from which the carrier substrate is removed.
  • the protective layer is formed before the BM layer is formed, thereby improving the adhesion between the BM layer and the lower layer or the substrate.
  • the adhesion of the BM layer is improved, damage to the BM layer can be reduced in a subsequent process, so that the BM layer and thus the colored layer can be fine-patterned and light leakage can be prevented.
  • FIG. 1 is a cross-sectional view of a flexible color filter according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a flexible color filter according to another embodiment of the present invention.
  • 3A to 3G are cross-sectional views illustrating a method of manufacturing a flexible color filter according to an embodiment of the present invention.
  • 4A and 4B are sectional views and a plan view, respectively, of a test piece of an experimental example of the present invention.
  • FIG. 5 is a cross-sectional view of a test piece of a comparative example.
  • the present invention provides a flexible color filter capable of improving the adhesion of the BM layer by forming a protective layer under the BM layer of the color filter which is processed on the carrier substrate.
  • FIG. 1 is a cross-sectional view of a flexible color filter according to an embodiment of the present invention.
  • a flexible color filter may include a black matrix (BM) layer (patterned on the separation layer 120, the protection layer 130, and the protection layer 130). 140, and a colored layer 150 formed in the pixel region between the BM layers 140.
  • BM black matrix
  • the separation layer 120 is a layer formed for peeling with the carrier substrate after the manufacture of the color filter in the manufacturing process of the present invention. Therefore, the separation layer 120 may be separated from the carrier substrate through physical force, and after the separation layer 120 is laminated with the base film.
  • the peeling force of the separation layer 120 is 1 N / 25 mm or less, and it is more preferable that it is 0.1 N / 25 mm or less. That is, the separation layer 120 may be formed of a material such that the physical force applied when the separation layer 120 and the carrier substrate are separated does not exceed 1 N / 25 mm, particularly 0.1 N / 25 mm.
  • the separation layer 120 may not be neatly separated upon separation from the carrier substrate, and the separation layer 120 may remain on the carrier substrate, and the separation layer 120 and Cracks may occur in at least one of the protective layer 130, the BM layer 140, the colored layer 150, and the overcoat layer 160 formed thereon.
  • the peeling force of the separation layer 120 is more preferably 0.1N / 25mm or less, more preferably 0.1N / 25mm or less in terms of the controllable curl (curl) generated after peeling from the carrier substrate.
  • the separation layer 120 may be formed of a polymer material, for example, polyacrylate, polymethacrylate (eg PMMA), polyimide, polyamide, Polyvinyl alcohol, polyamic acid, polyolefin (e.g. PE, PP), polystyrene, polynorbornene, phenylmaleimide copolymer , Polyazobenzene, polyphenylenephthalamide, polyester (e.g. PET, PBT), polyarylate, cinnamate polymer, coumarin system It may include at least one material selected from the group consisting of a polymer, a phthalimidine-based polymer, a chalcone (chalcone) -based polymer and an aromatic acetylene-based polymer.
  • a polymer material for example, polyacrylate, polymethacrylate (eg PMMA), polyimide, polyamide, Polyvinyl alcohol, polyamic acid, polyolefin (e.g. PE, PP), polystyren
  • the thickness of the separation layer 120 is preferably 10 to 1000 nm, more preferably 50 to 500 nm. If the thickness of the separation layer 120 is less than 10 nm, the uniformity during application of the separation layer is uneven, or the pattern formation at the top is uneven, or the peeling force is increased due to locally peeling force, or the curl is controlled after separation from the carrier substrate. There is a problem. And when the thickness exceeds 1000nm, the peeling force is no longer lowered, there is a problem that the flexibility is lowered.
  • the separation layer 120 preferably has a surface energy of 30 to 70 mN / m after peeling off the carrier substrate, and the difference in surface energy between the separation layer 120 and the carrier substrate is preferably 10 mN / m or more.
  • the separation layer 120 should be stably in close contact with the carrier substrate in the process until it is peeled off from the carrier substrate, and it is easy to prevent tearing or curling of the color filter when peeling from the carrier substrate. It must be peeled off.
  • the surface energy of the separation layer 120 is 30 to 70 mN / m, the peeling force can be adjusted, and the adhesion between the separation layer 120 and the adjacent protective layer 130 is secured, thereby improving process efficiency.
  • the surface energy difference between the separation layer 120 and the carrier substrate is 10mN / m or more can be peeled off smoothly from the carrier substrate to prevent the tear or crack of the color filter.
  • the protective layer 130 is formed on the separation layer 120 and serves to improve the adhesion of the BM layer formed thereon.
  • the protective layer 130 may be formed of an organic insulating film or an inorganic insulating film.
  • the protective layer 130 may be the same as described above with respect to the separation layer 120. Polymeric materials can be used.
  • the protective layer 130 may have a thickness of 0.5 to 5 ⁇ m.
  • the BM layer 140 is a light shielding layer that serves to block light in portions other than the pixel region and to prevent color mixing at the boundary of each color layer. Therefore, the BM layer 140 is formed of an opaque material and is patterned to surround the pixel area.
  • the BM layer 140 is formed on the protective layer 130 to improve adhesion with the lower layer.
  • the separation load of the BM layer 140 formed on the protective layer 130 is an average of 2.5 N / mm 2 or more.
  • the coloring layer 150 is a layer for color implementation for color display, and is typically patterned with red, green, and blue, and is disposed between the BM layers 140. However, the colored layer does not have to include all the patterns of red, green, and blue, or only the patterns of red, green, and blue, and only some of these patterns may be used depending on the color representation of the flexible display device. A pattern of another color, such as a white pattern or the like, may be further included.
  • the BM layer 140 and the colored layer 150 may also be formed of the above-described polymer material.
  • the color filter according to an embodiment of the present invention shown in FIG. 1 may form a flexible color filter substrate by attaching a flexible base film under the separation layer 120.
  • the base film may be a transparent film or a polarizing plate.
  • polyester-based resins such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, and polybutylene terephthalate; Cellulose resins such as diacetyl cellulose and triacetyl cellulose; Polycarbonate resins; Acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene resins such as polystyrene and acrylonitrile-styrene copolymers; Polyolefin-based resins such as polyethylene, polypropylene, cyclo-based or norbornene-structured polyolefins, ethylene-propylene copolymers; Vinyl chloride-based resins; Amide resins such as nylon and aromatic polyamides; Imide resin; Polyether sulfone resin; Sulfone resins; Polyether ether ketone resins;
  • the thickness of such a transparent film can be determined suitably, it is about 1-500 micrometers generally from the points of workability, thinness, etc., such as strength and handleability. 1-300 micrometers is especially preferable, and 5-200 micrometers is more preferable.
  • Such a transparent film may contain a suitable one or more additives.
  • a ultraviolet absorber, antioxidant, a lubricant, a plasticizer, a mold release agent, a coloring agent, a flame retardant, a nucleating agent, an antistatic agent, a pigment, a coloring agent, etc. are mentioned, for example.
  • the transparent film may have a structure including various functional layers such as a hard coating layer, an antireflection layer, and a gas barrier layer on one or both surfaces of the film, and the functional layer is not limited to the above-described ones. It may include.
  • the transparent film may be surface treated.
  • Such surface treatments include dry treatments such as plasma treatments, corona treatments, primer treatments, and chemical treatments such as alkali treatments including saponification treatments.
  • the transparent film may be an isotropic film, a retardation film or a protective film.
  • in-plane retardation [(nx-ny) ⁇ d], nx, ny are principal refractive indices in the film plane, nz is refractive index in the film thickness direction, and d is film thickness
  • Retardation film is a film manufactured by the method of uniaxial stretching, biaxial stretching, polymer coating, liquid crystal coating of polymer film, and is generally used for improving and adjusting optical characteristics such as viewing angle compensation, color improvement, light leakage improvement, color taste control of display. do.
  • the type of retardation film includes a wave plate such as 1/2 or 1/4, a positive C plate, a negative C plate, a positive A plate, a negative A plate, and a biaxial wave plate.
  • the protective film may be a film including an adhesive layer on at least one surface of a film made of a polymer resin, or a film having self-adhesiveness such as polypropylene, and may be used for protecting the color filter surface and improving processability.
  • a polarizing plate As a polarizing plate, a well-known thing used for a display apparatus can be used.
  • PVA polyvinyl alcohol
  • TAC triacetylcellulose
  • COP cycloolefin polymer
  • an overcoat layer may be further included on the BM layer 140 and the colored layer 150 to protect the pattern when the color filter is adhered to the base film.
  • FIG. 2 is a cross-sectional view of a flexible color filter in accordance with another embodiment of the present invention including an overcoat layer.
  • the flexible color filter according to another embodiment of the present invention may include a separation layer 120, a protective layer 130, and a patterned BM layer 140 and a colored layer on the protective layer 130. And an overcoat layer 160 covering the BM layer 140 and the colored layer 150.
  • the overcoat layer 160 may also be formed of the above-described polymer material.
  • 3A to 3G are cross-sectional views illustrating a method of manufacturing a flexible color filter according to an embodiment of the present invention.
  • a separation layer 120 is formed by applying a composition for forming a separation layer.
  • a glass substrate as the carrier substrate 170, other materials may be used without being limited thereto. However, a material having heat resistance that does not deform even at high temperatures, that is, maintains flatness, to withstand the subsequent process temperature is preferable.
  • a well-known coating method can be used as a method of apply
  • spin coating, die coating, spray coating, roll coating, screen coating, slit coating, dip coating, gravure coating, etc. are mentioned.
  • an inkjet method may be used.
  • the composition for forming the separation layer is cured after coating to form the separation layer 120.
  • the curing process may be used by thermosetting or UV curing alone, or a combination of thermosetting and UV curing.
  • the thermal curing it may be heated by an oven, a hot plate, etc., and the heating temperature and time may vary depending on the composition, but may be heat-treated under conditions of 10 to 120 minutes at 80 to 250 ° C.
  • the protective layer 130 may be formed by applying an organic insulating film or by depositing an inorganic insulating film.
  • a coating method when using an organic insulating film a well-known coating method can be used. For example, spin coating, die coating, spray coating, roll coating, screen coating, slit coating, dip coating, gravure coating, etc. are mentioned. Alternatively, an inkjet method may be used.
  • the protective layer 130 is formed to surround both sides of the separation layer 120. .
  • the BM layer 140 is formed on the formed protective layer 130.
  • the BM layer 140 may be formed by patterning with an opaque organic material.
  • the colored layer 150 of red (R), green (G), and blue (B) is formed in the region between the patterns of the BM layer 140.
  • the color constituting the colored layer 150 may be arbitrarily selected, and the order of formation for each color may also be arbitrarily selected.
  • the BM layer 140 and the colored layer 150 may be implemented in a fine pattern, and the BM layer 140 may be formed in the process of forming the colored layer 150. Damage is minimized.
  • an overcoat layer 160 for pattern protection is formed on the formed BM layer 140 and the colored layer 150.
  • the carrier substrate 170 is separated from the separation layer 120.
  • the process of separating the carrier substrate 170 from the separation layer 120 is performed at room temperature, for example, may be performed by a physical peeling method of removing the carrier substrate 170, which is a glass substrate, from the separation layer 120. have.
  • the peeling method is a method of lift-off or peel-off, but is not limited thereto.
  • the base film 110 is attached to the surface of the separation layer 120 from which the carrier substrate 170 is removed.
  • the base film 110 may be adhered to the separation layer 120 by using an adhesive layer, and the usable adhesive is a photocurable adhesive and does not require a separate drying process after photocuring. Simple process improves productivity.
  • a photocurable adhesive used in the present invention a photocurable adhesive used in the art may be used without particular limitation.
  • a composition containing an epoxy compound or an acrylic monomer can be used.
  • rays such as ultraviolet rays, ultraviolet rays, near-ultraviolet rays, and infrared rays, may be used. Curing by ultraviolet irradiation is advantageous from the ease of obtaining the irradiation device, the price, and the like.
  • a high pressure mercury lamp As a light source at the time of ultraviolet irradiation, a high pressure mercury lamp, an electrodeless lamp, an ultrahigh pressure mercury lamp, a carbon arc lamp, a xenon lamp, a metal halide lamp, a chemical lamp, a black light, etc. can be used.
  • a 5 ⁇ 5 cm (thickness: 0.7 mm) glass substrate was prepared, and the substrate was washed with ethanol and DI water, followed by air blow drying.
  • the plate was left in a horizontal place for about 3 minutes, precured at 100 degrees for 90 seconds, exposed, and cured at 230 degrees for 20 minutes to form a protective layer of 1.15 ⁇ m.
  • the mixture was left to stand at room temperature for at least 4 hours, aged, and the sealant, which was frozen and stored at ⁇ 20 ° C., was applied to a diameter of 3-4 mm, and the upper glass substrate was attached and pressed for 1 minute with a weight.
  • the illuminance was exposed to 7000mJ at 18mW and cured at 200 ° C for 1 hour to complete the test piece of the experimental example.
  • FIGS. 4A and 4B are cross-sectional views and plan views, respectively, of completed test pieces.
  • the test piece has a structure in which a lower glass substrate 710, a protective layer 720, a BM layer 730, a sealant 740, and an upper glass substrate 750 are sequentially stacked. As shown, the upper glass substrate 750 and the lower glass substrate 710 are stacked to intersect.
  • Comparative Example prepared the test specimen under the same conditions as above but without the protective layer As a structure in which a BM layer is formed on a substrate, its cross section is shown in FIG.
  • the protective layer is not formed in the comparative example, and only the lower glass substrate 810, the BM layer 830, the sealant 840, and the upper glass substrate 850 are sequentially stacked.
  • the adhesion of the black matrix was measured through a test using a UTM tester INSTRON 5567. Specifically, the maximum load value until the upper and lower glass substrates were pulled up and down, respectively, at a speed of 10 mm / min and the lower glass substrate was separated from the black matrix was calculated as the sealant area ratio.
  • Table 1 shows the measurement results.
  • the average load is 2.61 N / mm 2 It can withstand an additional load of 0.52 N / mm 2 compared to the comparative example without a protective layer formed
  • the range of the maximum load and the minimum load (0.77) and the standard deviation (0.22) of the experimental example of the present invention shows a very stable adhesion performance about half as compared to the comparative example.
  • overcoat layer 170 carrier substrate

Abstract

The present invention relates to a flexible color filter and a manufacturing method therefor, the method forming a protective layer before a black matrix layer is formed in the manufacture of a color filter being processed on a carrier substrate, and forming the black matrix layer and a coloring layer, subsequently, thereon.

Description

유연성 컬러필터 및 그 제조 방법 Flexible color filter and its manufacturing method
본 발명은 유연성 컬러필터 및 그 제조 방법에 관한 것으로, 구체적으로 캐리어 기판 상에 공정을 진행하는 유연성 컬러필터와 그 제조 방법에 관한 것이다.The present invention relates to a flexible color filter and a method of manufacturing the same, and more particularly, to a flexible color filter and a method of manufacturing the same on a carrier substrate.
인터넷이 보편화되고 소통되는 정보의 양이 폭발적으로 증가하면서 미래에는 언제 어디서나 정보를 접할 수 있는 ‘유비쿼터스 디스플레이(ubiquitous display)’의 환경이 창출될 것이며, 그에 따라 정보를 출력하는 매개체인 노트북, 전자수첩 및 PDA 등과 같은 휴대용 디스플레이의 역할이 중요하게 되었다. 이러한 유비쿼터스 디스플레이 환경을 구현하기 위해서는 원하는 때와 장소에서 정보를 바로 접할 수 있도록 디스플레이의 휴대성이 요구됨과 동시에, 각종 멀티미디어 정보를 표시하기 위한 대화면 특성도 요구된다. 따라서, 이러한 휴대성 및 대화면 특성을 동시에 만족시키기 위해서는, 디스플레이에 유연성을 부여하여 디스플레이로서의 기능을 할 때에는 펼쳐서 이용할 수 있고 휴대시에는 접어서 보관할 수 있는 형태의 디스플레이가 개발될 필요성이 있다.As the Internet becomes more popular and the amount of information communicated explosively, the future will create an environment of 'ubiquitous display' where people can access information anytime and anywhere. And the role of portable displays such as PDAs have become important. In order to implement such a ubiquitous display environment, the portability of the display is required to directly access information at a desired time and place, and a large screen characteristic for displaying various multimedia information is required. Accordingly, in order to simultaneously satisfy such portability and large screen characteristics, there is a need to develop a display in a form that can be expanded and used when functioning as a display by giving flexibility to the display and folded and stored when carrying.
평판 표시 장치의 대표적인 예로는 액정 디스플레이(liquid-crystal display; LCD) 및 유기 발광 소자(organic light-emitting diode, OLED) 디스플레이를 들 수 있다. Representative examples of flat panel displays include liquid-crystal displays (LCDs) and organic light-emitting diode (OLED) displays.
OLED는 기존의 LCD에 비하여 매우 가볍고 얇은 화면을 구현할 수 있으며, 색재현 범위가 넓고, 응답 속도가 빠르며, 높은 명암비를 갖는 등의 장점이 있으며, 이외에도 유연성 디스플레이를 구현하는데도 가장 적합한 디스플레이로서 현재 활발하게 개발되고 있다. OLED has the advantages of being able to realize very light and thin screen, wide color reproduction range, fast response time, high contrast ratio, etc., as well as the most suitable display for flexible display. Is being developed.
특히, 백색 광원을 사용하는 백색 OLED 디스플레이는 고효율, 고해상도, 장수명 특성을 가지며 대면적 고화질의 디스플레이로 구현뿐만 아니라 일반 조명으로의 다양한 응용 가능성으로 인하여 국내외 연구자들에 의하여 본격적으로 연구가 이루어지고 있다. In particular, a white OLED display using a white light source has high efficiency, high resolution, and long life, and is being researched in earnest by domestic and foreign researchers because of its wide application of high resolution and wide application possibilities for general lighting.
백색 OLED 디스플레이에 있어 풀 컬러(full color) 구현을 위하여 컬러필터를 사용한다. 컬러필터는 적색, 녹색, 청색 착색 영역을 포함하며 이를 통과한 빛을 조합하여 색상을 표현하는데, 통상 화소 영역을 제외한 부분의 빛을 차단하고 각 착색층의 경계에서 혼색을 방지하는 역할을 하도록 블랙 매트릭스 패턴을 형성하고, 그 위에 착색층을 패터닝하여 형성한다. The color filter is used to realize full color in the white OLED display. The color filter includes red, green, and blue colored areas, and combines the light passing through them to express color, and black is generally used to block light in portions except pixel areas and to prevent color mixing at the boundary of each colored layer. A matrix pattern is formed and a colored layer is patterned on it.
이때, 블랙 매트릭스 패턴의 밀착성이 충분하지 않은 경우, 착색 영역을 형성하기 위하여 패터닝을 반복할 때 블랙 매트릭스 패턴이 손상될 수 있어 이에 따라 빛샘 현상이 발생하거나 색재현성이 떨어지는 등의 문제가 발생할 수 있다.In this case, when the adhesion of the black matrix pattern is not sufficient, the black matrix pattern may be damaged when the patterning is repeated to form the colored region, which may cause problems such as light leakage or poor color reproducibility. .
또한, 이러한 문제점은 컬러필터의 미세 패턴 구현에 장애가 된다.In addition, this problem is an obstacle to the implementation of the fine pattern of the color filter.
막의 밀착성을 향상시키기 위하여 버퍼층을 사용하는 기술이 대한민국 등록특허 제10-0325119호에서 개시되어 있다. 개시된 방법은 액정표시장치의 컬러필터 기판에서 착색층의 보호와 표면 평활성을 유지시키는 오버코트층과 액정 구동을 위한 전압이 인가되는 투명 전도막층의 밀착성을 향상시키기 위하여 오버코트층 상에 버퍼층을 형성하고 그 위에 투명 전도막층을 형성하는 것이다.The technique of using the buffer layer to improve the adhesion of the membrane is disclosed in Korean Patent No. 10-0325119. The disclosed method forms a buffer layer on the overcoat layer in order to improve the adhesion between the overcoat layer for maintaining the protection and surface smoothness of the colored layer in the color filter substrate of the liquid crystal display and the transparent conductive film layer to which the voltage for driving the liquid crystal is applied. It forms a transparent conductive film layer on it.
본 발명은 이와 같은 종래 기술의 문제점을 해결하기 위한 것으로서, 컬러필터의 블랙 매트릭스층과 그 하부층 또는 기판 사이의 밀착성을 개선하여 색재현성을 향상시킬 수 있는 유연성 컬러필터와 그 제조 방법을 제공하는 것을 그 과제로 한다.The present invention is to solve the problems of the prior art, to provide a flexible color filter and a method of manufacturing the same to improve the color reproducibility by improving the adhesion between the black matrix layer and the lower layer or the substrate of the color filter. Let's do that task.
본 발명의 다른 과제는 컬러필터의 블랙 매트릭스층과 그 하부층 또는 기판 사이의 밀착성을 개선함으로써 컬러필터의 미세패턴을 구현할 수 있도록 하여 높은 해상도를 얻을 수 있는 유연성 컬러필터와 그 제조 방법을 제공하는 것이다.Another object of the present invention is to provide a flexible color filter and a method of manufacturing the same, which can achieve a fine resolution of the color filter by improving the adhesion between the black matrix layer and the lower layer or the substrate of the color filter, thereby obtaining a high resolution. .
이와 같은 과제를 해결하기 위하여, 본 발명의 일 양상은 분리층; 상기 분리층 상에 형성된 보호층; 상기 보호층 상에 형성된 블랙 매트릭스(black matrix, BM)층; 및 상기 BM층 사이에 형성된 착색층을 포함하며, 상기 BM층의 하부층과의 분리 하중은 2.5 N/mm2 이상인 유연성 컬러필터를 제공한다.In order to solve this problem, an aspect of the present invention is a separation layer; A protective layer formed on the separation layer; A black matrix (BM) layer formed on the protective layer; And it comprises a colored layer formed between the BM layer, the separation load with the lower layer of the BM layer provides a flexible color filter of 2.5 N / mm 2 or more.
여기에서, 상기 보호층은 상기 분리층의 측면까지 감싸도록 형성될 수 있다.Here, the protective layer may be formed to surround the side of the separation layer.
본 발명의 유연성 컬러필터는 상기 분리층의 하부에 배치된 기재필름을 더 포함할 수 있으며, 상기 BM층 및 착색층 위에 형성된 오버코트층을 더 포함할 수도 있다. The flexible color filter of the present invention may further include a base film disposed under the separation layer, and may further include an overcoat layer formed on the BM layer and the colored layer.
상기 보호층은 유기 절연막 또는 무기 절연막 중 적어도 하나를 포함할 수 있다.The protective layer may include at least one of an organic insulating layer and an inorganic insulating layer.
본 발명의 다른 양상에 의하면, 상술한 것과 같은 유연성 컬러필터를 포함하는 유연성 디스플레이 장치가 제공된다.According to another aspect of the present invention, there is provided a flexible display device including the flexible color filter as described above.
본 발명의 또 다른 양상에 따른 유연성 컬러필터의 제조 방법은, 캐리어 기판 상에 분리층 형성용 조성물을 도포하여 분리층을 형성하는 단계; 상기 분리층 상에 보호층을 형성하는 단계; 상기 보호층 상에 블랙 매트릭스(black matrix, BM)층을 형성하고, 그 사이에 착색층을 형성하는 단계; 및 상기 캐리어 기판을 제거하는 단계를 포함하며, 상기 BM층의 하부층과의 분리 하중은 2.5 N/mm2 이상이다.According to another aspect of the present invention, a method of manufacturing a flexible color filter may include forming a separation layer by applying a composition for forming a separation layer on a carrier substrate; Forming a protective layer on the separation layer; Forming a black matrix (BM) layer on the passivation layer, and forming a colored layer therebetween; And removing the carrier substrate, wherein the separation load with the lower layer of the BM layer is at least 2.5 N / mm 2 .
여기에서, 상기 보호층은 보호층 형성용 조성물을 도포하거나 증착하여 형성할 수 있다.Here, the protective layer may be formed by applying or depositing a protective layer forming composition.
본 발명의 유연성 컬러필터의 제조 방법은 상기 BM층 및 착색층 위에 오버코트층을 형성하는 단계를 더 포함할 수 있다.The method of manufacturing the flexible color filter of the present invention may further include forming an overcoat layer on the BM layer and the colored layer.
또한, 상기 캐리어 기판을 제거하는 단계 이후에, 상기 캐리어 기판이 제거된 면 상에 기재필름을 부착하는 단계를 더 포함할 수도 있다.In addition, after removing the carrier substrate, the method may further include attaching a base film on a surface from which the carrier substrate is removed.
이와 같은 본 발명에 따른 유연성 컬러필터에 의하면, BM층을 형성하기 전에 보호층을 형성하여, BM층과 그 하부층 또는 기판 사이의 밀착성이 향상된다. According to such a flexible color filter according to the present invention, the protective layer is formed before the BM layer is formed, thereby improving the adhesion between the BM layer and the lower layer or the substrate.
BM층의 밀착성이 향상되면 이후 공정에서 BM층의 손상을 줄일 수 있으므로 BM층 및 따라서 착색층의 미세패턴화가 가능하며 빛샘 현상을 방지할 수 있다.If the adhesion of the BM layer is improved, damage to the BM layer can be reduced in a subsequent process, so that the BM layer and thus the colored layer can be fine-patterned and light leakage can be prevented.
이에 따라 높은 해상도와 우수한 색재현성을 갖는 유연성 컬러필터 및 이를 포함하는 유연성 디스플레이 장치를 얻을 수 있다. Accordingly, a flexible color filter having high resolution and excellent color reproducibility and a flexible display device including the same can be obtained.
도 1은 본 발명의 일 실시예에 따른 유연성 컬러필터의 단면도이다.1 is a cross-sectional view of a flexible color filter according to an embodiment of the present invention.
도 2는 본 발명의 다른 실시예에 따른 유연성 컬러필터의 단면도이다.2 is a cross-sectional view of a flexible color filter according to another embodiment of the present invention.
도 3a 내지 도 3g는 본 발명의 일 실시예에 따른 유연성 컬러필터의 제조 방법의 공정 단면도이다. 3A to 3G are cross-sectional views illustrating a method of manufacturing a flexible color filter according to an embodiment of the present invention.
도 4a 및 도 4b는 각각 본 발명의 실험예의 시험편의 단면도와 평면도이다.4A and 4B are sectional views and a plan view, respectively, of a test piece of an experimental example of the present invention.
도 5는 비교예의 시험편의 단면도이다.5 is a cross-sectional view of a test piece of a comparative example.
이하, 도면을 참조하여 본 발명에 따른 유연성 컬러필터와 그 제조방법의 바람직한 실시예에 관하여 상세히 설명한다. 다만 본 명세서에 첨부된 도면들은 본 발명을 설명하기 위한 예시일 뿐, 본 발명이 도면에 의해 한정되는 것은 아니다. 또한, 설명 상의 편의를 위해 일부 구성요소들은 도면 상에서 과장되게 표현되거나, 축소 또는 생략되어 있을 수 있다.Hereinafter, with reference to the drawings will be described in detail a preferred embodiment of the flexible color filter and the manufacturing method according to the present invention. However, the drawings attached to the present specification are only examples for describing the present invention, and the present invention is not limited to the drawings. In addition, some of the components may be exaggerated, reduced or omitted in the drawings for convenience of description.
본 발명은 캐리어 기판 상에 공정을 진행하는 컬러필터의 BM층 하부에 보호층을 형성하여 BM층의 밀착성을 향상시킬 수 있는 유연성 컬러필터를 제시한다.The present invention provides a flexible color filter capable of improving the adhesion of the BM layer by forming a protective layer under the BM layer of the color filter which is processed on the carrier substrate.
도 1은 본 발명의 일 실시예에 따른 유연성 컬러필터의 단면도이다.1 is a cross-sectional view of a flexible color filter according to an embodiment of the present invention.
도 1을 참조하면, 본 발명의 일 실시예에 따른 유연성 컬러필터는, 분리층(120), 보호층(130), 보호층(130) 상에 패터닝된 블랙 매트릭스(black matrix, BM)층(140), 및 BM층(140) 사이의 화소 영역에 형성된 착색층(150)을 포함하여 이루어진다. Referring to FIG. 1, a flexible color filter according to an exemplary embodiment of the present invention may include a black matrix (BM) layer (patterned on the separation layer 120, the protection layer 130, and the protection layer 130). 140, and a colored layer 150 formed in the pixel region between the BM layers 140.
분리층(120)은 본 발명의 제조공정에서 컬러필터의 제조가 완료된 후에 캐리어 기판과의 박리를 위해 형성하는 층이다. 따라서 분리층(120)은 캐리어 기판과는 물리적인 힘을 통해 분리될 수 있으며 분리된 후에는 기재 필름과 적층된다. The separation layer 120 is a layer formed for peeling with the carrier substrate after the manufacture of the color filter in the manufacturing process of the present invention. Therefore, the separation layer 120 may be separated from the carrier substrate through physical force, and after the separation layer 120 is laminated with the base film.
분리층(120)의 박리력은 1N/25mm 이하인 것이 바람직하며, 0.1N/25mm 이하인 것이 보다 바람직하다. 즉, 분리층(120)과 캐리어 기판의 분리시에 가해지는 물리적 힘이 1N/25mm, 특히 0.1N/25mm을 넘지 않도록 하는 물질로 분리층(120)이 형성되는 것이 바람직하다.It is preferable that the peeling force of the separation layer 120 is 1 N / 25 mm or less, and it is more preferable that it is 0.1 N / 25 mm or less. That is, the separation layer 120 may be formed of a material such that the physical force applied when the separation layer 120 and the carrier substrate are separated does not exceed 1 N / 25 mm, particularly 0.1 N / 25 mm.
분리층(120)의 박리력이 1N/25mm 초과인 경우에는 캐리어 기판과의 분리시 깔끔하게 분리되지 않아, 분리층(120)이 캐리어 기판상에 잔존할 가능성이 있으며, 또한 분리층(120) 및 그 위에 형성된 보호층(130), BM층(140), 착색층(150), 오버코트층(160) 중 한 곳 이상에서 크랙이 생길 가능성도 있다.When the separation force of the separation layer 120 is greater than 1 N / 25mm, the separation layer 120 may not be neatly separated upon separation from the carrier substrate, and the separation layer 120 may remain on the carrier substrate, and the separation layer 120 and Cracks may occur in at least one of the protective layer 130, the BM layer 140, the colored layer 150, and the overcoat layer 160 formed thereon.
특히, 분리층(120)의 박리력은 0.1N/25mm 이하인 것이 보다 바람직한데, 0.1N/25mm 이하인 경우에는 캐리어 기판으로부터 박리 후에 발생하는 컬(curl)이 제어 가능하다는 측면에서 보다 바람직하다. In particular, the peeling force of the separation layer 120 is more preferably 0.1N / 25mm or less, more preferably 0.1N / 25mm or less in terms of the controllable curl (curl) generated after peeling from the carrier substrate.
분리층(120)은 고분자 재질로 형성될 수 있으며, 예를 들면, 폴리아크릴레이트(polyacrylate), 폴리메타크릴레이트(polymethacrylate, 예를 들면 PMMA), 폴리이미드(polyimide), 폴리아미드(polyamide), 폴리비닐알코올(poly vinyl alcohol), 폴리아믹산(polyamic acid), 폴리올레핀(polyolefin, 예를 들면, PE, PP), 폴리스티렌(polystyrene), 폴리노보넨(polynorbornene), 페닐말레이미드 공중합체(phenylmaleimide copolymer), 폴리아조벤젠(polyazobenzene), 폴리페닐렌프탈아미드(polyphenylenephthalamide), 폴리에스테르(polyester, 예를 들면, PET, PBT), 폴리아릴레이트(polyarylate), 신나메이트(cinnamate)계 고분자, 쿠마린(coumarin)계 고분자, 프탈리미딘(phthalimidine)계 고분자, 칼콘(chalcone)계 고분자 및 방향족 아세틸렌계 고분자로 이루어진 군에서 선택된 1종 이상의 물질을 포함할 수 있다.The separation layer 120 may be formed of a polymer material, for example, polyacrylate, polymethacrylate (eg PMMA), polyimide, polyamide, Polyvinyl alcohol, polyamic acid, polyolefin (e.g. PE, PP), polystyrene, polynorbornene, phenylmaleimide copolymer , Polyazobenzene, polyphenylenephthalamide, polyester (e.g. PET, PBT), polyarylate, cinnamate polymer, coumarin system It may include at least one material selected from the group consisting of a polymer, a phthalimidine-based polymer, a chalcone (chalcone) -based polymer and an aromatic acetylene-based polymer.
분리층(120)의 두께는 10 내지 1000nm가 바람직하고, 50 내지 500nm인 것이 보다 바람직하다. 분리층(120)의 두께가 10nm 미만이면 분리층 도포시의 균일성이 떨어져 상부의 패턴 형성이 불균일하거나, 국부적으로 박리력이 상승하여 찢겨짐이 발생하거나, 캐리어 기판과 분리 후, 컬이 제어되지 않는 문제점이 있다. 그리고 두께가 1000nm를 초과하면 박리력이 더 이상 낮아지지 않으며, 유연성이 저하되는 문제점이 있다.The thickness of the separation layer 120 is preferably 10 to 1000 nm, more preferably 50 to 500 nm. If the thickness of the separation layer 120 is less than 10 nm, the uniformity during application of the separation layer is uneven, or the pattern formation at the top is uneven, or the peeling force is increased due to locally peeling force, or the curl is controlled after separation from the carrier substrate. There is a problem. And when the thickness exceeds 1000nm, the peeling force is no longer lowered, there is a problem that the flexibility is lowered.
분리층(120)은 캐리어 기판과 박리 후의 표면에너지가 30 내지 70mN/m인 것이 바람직하며, 분리층(120)과 캐리어 기판과의 표면에너지 차이는 10mN/m 이상인 것이 바람직하다. 분리층(120)은 유연성 컬러필터의 제조 공정에서, 캐리어 기판과 박리될 때까지는 공정에서 캐리어 기판과 안정적으로 밀착되어야 하고, 캐리어 기판으로부터 박리 시에는 컬러필터의 찢김이나 컬이 발생하지 않도록 용이하게 박리되어야 한다. 분리층(120)의 표면에너지를 30 내지 70mN/m이 되도록 하면 박리력 조절이 가능하고, 분리층(120)과 인접하는 보호층(130)과의 밀착력이 확보되어 공정 효율이 향상된다. 또한 분리층(120)과 캐리어 기판과의 표면에너지 차이가 10mN/m 이상일 경우 캐리어 기판으로부터 원활하게 박리되어 컬러필터의 찢김이나 크랙을 방지할 수 있다.The separation layer 120 preferably has a surface energy of 30 to 70 mN / m after peeling off the carrier substrate, and the difference in surface energy between the separation layer 120 and the carrier substrate is preferably 10 mN / m or more. In the manufacturing process of the flexible color filter, the separation layer 120 should be stably in close contact with the carrier substrate in the process until it is peeled off from the carrier substrate, and it is easy to prevent tearing or curling of the color filter when peeling from the carrier substrate. It must be peeled off. When the surface energy of the separation layer 120 is 30 to 70 mN / m, the peeling force can be adjusted, and the adhesion between the separation layer 120 and the adjacent protective layer 130 is secured, thereby improving process efficiency. In addition, when the surface energy difference between the separation layer 120 and the carrier substrate is 10mN / m or more can be peeled off smoothly from the carrier substrate to prevent the tear or crack of the color filter.
보호층(130)은 분리층(120) 상에 형성되어 그 위에 형성되는 BM층의 밀착성을 향상시키는 역할을 한다. The protective layer 130 is formed on the separation layer 120 and serves to improve the adhesion of the BM layer formed thereon.
상기 보호층(130)은 유기 절연막 또는 무기 절연막으로 형성될 수 있으며, 유연성 컬러필터로서의 기능을 확보하기 위하여 보호층(130)이 유기층으로 형성될 때에는 분리층(120)과 관련하여 상술한 것과 같은 고분자 재질이 사용될 수 있다. 보호층(130)의 두께는 0.5 내지 5 ㎛ 으로 형성될 수 있다. The protective layer 130 may be formed of an organic insulating film or an inorganic insulating film. When the protective layer 130 is formed of an organic layer in order to secure a function as a flexible color filter, the protective layer 130 may be the same as described above with respect to the separation layer 120. Polymeric materials can be used. The protective layer 130 may have a thickness of 0.5 to 5 μm.
BM층(140)은 화소 영역을 제외한 부분의 빛을 차단하고 각 착색층의 경계에서 혼색을 방지하는 역할을 하는 차광층이다. 따라서, BM층(140)은 불투명 물질로 형성되며, 화소 영역을 둘러싸도록 패터닝되어 있다.The BM layer 140 is a light shielding layer that serves to block light in portions other than the pixel region and to prevent color mixing at the boundary of each color layer. Therefore, the BM layer 140 is formed of an opaque material and is patterned to surround the pixel area.
BM층(140)은 하부층과의 밀착성을 향상하기 위하여 보호층(130) 상부에 형성된다. 본 발명의 일 실시예에 따르면, 보호층(130) 상부에 형성된 BM층(140)의 분리 하중은 평균 2.5 N/mm2 이상이다. The BM layer 140 is formed on the protective layer 130 to improve adhesion with the lower layer. According to one embodiment of the present invention, the separation load of the BM layer 140 formed on the protective layer 130 is an average of 2.5 N / mm 2 or more.
착색층(150)은 컬러 디스플레이를 위한 색 구현을 위한 층으로 통상적으로 적색(Red), 녹색(Green), 청색(Blue)이 패턴화되어 있으며, BM층(140) 사이에 배치된다. 그러나, 착색층이 적색, 녹색, 청색의 패턴을 모두 포함하여야 하거나 적색, 녹색, 청색의 패턴만을 포함하여야 하는 것은 아니며, 유연성 디스플레이 장치의 색상 표현 방식에 따라 이 중 임의의 일부 색상의 패턴만이 포함되거나 백색(White) 패턴 등과 같은 다른 색상의 패턴이 더 포함될 수도 있다. The coloring layer 150 is a layer for color implementation for color display, and is typically patterned with red, green, and blue, and is disposed between the BM layers 140. However, the colored layer does not have to include all the patterns of red, green, and blue, or only the patterns of red, green, and blue, and only some of these patterns may be used depending on the color representation of the flexible display device. A pattern of another color, such as a white pattern or the like, may be further included.
한편, 외광이 각 색상의 착색층에 도달하면 해당 색상의 파장을 갖는 광만 투과하고 나머지 두 색상의 파장을 갖는 광은 흡수되므로,　외광의 입사 광량을 효과적으로 줄일 수 있어,　착색층이 외광반사 방지용 편광판을 대신하는 기능을 수행할 수도 있다.On the other hand, when the external light reaches the colored layer of each color, only the light having the wavelength of the corresponding color is transmitted and the light having the wavelength of the other two colors is absorbed. You can also perform a function that replaces.
BM층(140)과 착색층(150) 또한 상술한 고분자 재질로 형성될 수도 있다.The BM layer 140 and the colored layer 150 may also be formed of the above-described polymer material.
도면 상에 도시되어 있지는 않지만, 도 1에 도시된 본 발명의 일 실시예에 따른 컬러필터는, 분리층(120) 하부에 유연성 기재필름을 부착하여 유연성 컬러필터 기판을 구성할 수 있다. Although not shown in the drawings, the color filter according to an embodiment of the present invention shown in FIG. 1 may form a flexible color filter substrate by attaching a flexible base film under the separation layer 120.
기재 필름은 투명필름이나 편광판일 수 있다. The base film may be a transparent film or a polarizing plate.
투명필름은 투명성, 기계적 강도, 열안정성이 우수한 필름이 사용될 수 있으며, 구체적인 예로는, 폴리에틸렌테레프탈레이트, 폴리에틸렌이소프탈레이트, 폴리에틸렌나프탈레이트, 폴리부틸렌테레프탈레이트 등의 폴리에스테르계 수지; 디아세틸셀룰로오스, 트리아세틸셀룰로오스 등의 셀룰로오스계 수지; 폴리카보네이트계 수지; 폴리메틸(메타)아크릴레이트, 폴리에틸(메타)아크릴레이트 등의 아크릴계 수지; 폴리스티렌, 아크릴로니트릴-스티렌 공중합체 등의 스티렌계 수지; 폴리에틸렌, 폴리프로필렌, 시클로계 또는 노보넨 구조를 갖는 폴리올레핀, 에틸렌-프로필렌 공중합체 등의 폴리올레핀계 수지; 염화비닐계 수지; 나일론, 방향족 폴리아미드 등의 아미드계 수지; 이미드계 수지; 폴리에테르술폰계 수지; 술폰계 수지; 폴리에테르에테르케톤계 수지; 황화 폴리페닐렌계 수지; 비닐알코올계 수지; 염화비닐리덴계 수지; 비닐부티랄계 수지; 알릴레이트계 수지; 폴리옥시메틸렌계 수지; 에폭시계 수지 등과 같은 열가소성 수지로 구성된 필름을 들 수 있으며, 상기 열가소성 수지의 블렌드물로 구성된 필름도 사용할 수 있다. 또한, (메타)아크릴계, 우레탄계, 아크릴우레탄계, 에폭시계, 실리콘계 등의 열경화성 수지 또는 자외선 경화형 수지로 된 필름을 이용할 수도 있다. As the transparent film, a film having excellent transparency, mechanical strength and thermal stability may be used. Specific examples thereof include polyester-based resins such as polyethylene terephthalate, polyethylene isophthalate, polyethylene naphthalate, and polybutylene terephthalate; Cellulose resins such as diacetyl cellulose and triacetyl cellulose; Polycarbonate resins; Acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate; Styrene resins such as polystyrene and acrylonitrile-styrene copolymers; Polyolefin-based resins such as polyethylene, polypropylene, cyclo-based or norbornene-structured polyolefins, ethylene-propylene copolymers; Vinyl chloride-based resins; Amide resins such as nylon and aromatic polyamides; Imide resin; Polyether sulfone resin; Sulfone resins; Polyether ether ketone resins; Sulfided polyphenylene resins; Vinyl alcohol-based resins; Vinylidene chloride-based resins; Vinyl butyral resin; Allyl resins; Polyoxymethylene resin; And films composed of thermoplastic resins such as epoxy resins, and the like, and films composed of blends of the above thermoplastic resins may also be used. Moreover, the film of thermosetting resin or ultraviolet curable resin, such as (meth) acrylic-type, urethane type, acrylurethane type, epoxy type, and silicone type, can also be used.
이와 같은 투명 필름의 두께는 적절히 결정할 수 있지만, 일반적으로는 강도나 취급성 등의 작업성, 박층성 등의 점에서 1 ∼ 500㎛ 정도이다. 특히 1 ∼ 300㎛가 바람직하고, 5 ∼ 200㎛가 보다 바람직하다.Although the thickness of such a transparent film can be determined suitably, it is about 1-500 micrometers generally from the points of workability, thinness, etc., such as strength and handleability. 1-300 micrometers is especially preferable, and 5-200 micrometers is more preferable.
이러한 투명 필름은 적절한 1종 이상의 첨가제가 함유된 것일 수도 있다. 첨가제로는, 예컨대 자외선흡수제, 산화방지제, 윤활제, 가소제, 이형제, 착색방지제, 난연제, 핵제, 대전방지제, 안료, 착색제 등을 들 수 있다. 상기 투명 필름은 필름의 일면 또는 양면에 하드코팅층, 반사방지층, 가스배리어층과 같은 다양한 기능성층을 포함하는 구조일 수 있으며, 기능성층은 전술한 것으로 한정되는 것은 아니며, 용도에 따라 다양한 기능성층을 포함할 수 있다.Such a transparent film may contain a suitable one or more additives. As an additive, a ultraviolet absorber, antioxidant, a lubricant, a plasticizer, a mold release agent, a coloring agent, a flame retardant, a nucleating agent, an antistatic agent, a pigment, a coloring agent, etc. are mentioned, for example. The transparent film may have a structure including various functional layers such as a hard coating layer, an antireflection layer, and a gas barrier layer on one or both surfaces of the film, and the functional layer is not limited to the above-described ones. It may include.
또한, 필요에 따라 투명 필름은 표면 처리된 것일 수 있다. 이러한 표면 처리로는 플라즈마 처리, 코로나 처리, 프라이머 처리 등의 건식 처리, 검화 처리를 포함하는 알칼리 처리 등의 화학 처리 등을 들 수 있다.In addition, if necessary, the transparent film may be surface treated. Such surface treatments include dry treatments such as plasma treatments, corona treatments, primer treatments, and chemical treatments such as alkali treatments including saponification treatments.
또한, 투명필름은 등방성필름, 위상차필름 또는 보호필름(Protective Film)일 수 있다.In addition, the transparent film may be an isotropic film, a retardation film or a protective film.
등방성필름일 경우 면내 위상차(Ro, Ro=[(nx-ny)×d], nx, ny는 필름 평면 내의 주굴절률, nz는 필름 두께 방향의 굴절률, d는 필름 두께이다)가 40nm 이하이고, 15nm 이하가 바람직하며, 두께방향 위상차(Rth, Rth=[(nx+ny)/2-nz]×d ) 가 -90nm ∼ +75nm 이며, 바람직하게는 -80nm ∼ +60nm, 특히 -70nm ∼ +45nm 가 바람직하다.In the case of an isotropic film, in-plane retardation (Ro, Ro = [(nx-ny) × d], nx, ny are principal refractive indices in the film plane, nz is refractive index in the film thickness direction, and d is film thickness) is 40 nm or less, 15 nm or less is preferable, and thickness direction retardation (Rth, Rth = [(nx + ny) / 2-nz] xd) is -90nm-+ 75nm, Preferably it is -80nm-+ 60nm, especially -70nm-+ 45 nm is preferable.
위상차필름은 고분자필름의 일축 연신, 이축 연신, 고분자코팅, 액정코팅의 방법으로 제조된 필름이며, 일반적으로 디스플레이의 시야각보상, 색감개선, 빛샘개선, 색미조절 등의 광학특성 향상 및 조절을 위하여 사용된다.Retardation film is a film manufactured by the method of uniaxial stretching, biaxial stretching, polymer coating, liquid crystal coating of polymer film, and is generally used for improving and adjusting optical characteristics such as viewing angle compensation, color improvement, light leakage improvement, color taste control of display. do.
위상차필름의 종류에는 1/2 이나 1/4 등의 파장판, 양의 C플레이트, 음의 C플레이트, 양의 A플레이트, 음의 A플레이트, 이축성 파장판을 포함한다.The type of retardation film includes a wave plate such as 1/2 or 1/4, a positive C plate, a negative C plate, a positive A plate, a negative A plate, and a biaxial wave plate.
보호필름은 고분자수지로 이루어진 필름의 적어도 일면에 점착층을 포함하는 필름이거나 폴리프로필렌 등의 자가점착성을 가진 필름일 수 있으며, 컬러필터 표면의 보호, 공정성 개선을 위하여 사용될 수 있다.The protective film may be a film including an adhesive layer on at least one surface of a film made of a polymer resin, or a film having self-adhesiveness such as polypropylene, and may be used for protecting the color filter surface and improving processability.
편광판은 디스플레이 장치에 사용되는 공지의 것이 사용될 수 있다. As a polarizing plate, a well-known thing used for a display apparatus can be used.
구체적으로는 PVA(폴리비닐알코올), TAC(트리아세틸셀룰로스)나 COP(시클로올레핀폴리머) 계열 필름을 사용할 수 있으나, 이에 한정되는 것은 아니다. Specifically, PVA (polyvinyl alcohol), TAC (triacetylcellulose) or COP (cycloolefin polymer) based film may be used, but is not limited thereto.
본 발명의 다른 실시예에 따르면, 컬러필터를 기재필름과 접착할 때 패턴을 보호하기 위하여 BM층(140)과 착색층(150) 상부에 오버코트층을 더 포함할 수도 있다.According to another embodiment of the present invention, an overcoat layer may be further included on the BM layer 140 and the colored layer 150 to protect the pattern when the color filter is adhered to the base film.
도 2는 오버코트층을 포함하는 본 발명의 다른 실시예에 따른 유연성 컬러필터의 단면도이다.2 is a cross-sectional view of a flexible color filter in accordance with another embodiment of the present invention including an overcoat layer.
도 2에 도시된 바와 같이, 본 발명의 다른 실시예에 따른 유연성 컬러필터는, 분리층(120), 보호층(130), 보호층(130) 상에 패터닝된 BM층(140)과 착색층(150) 및 BM층(140)과 착색층(150)을 덮고 있는 오버코트층(160)을 포함하여 이루어진다. As shown in FIG. 2, the flexible color filter according to another embodiment of the present invention may include a separation layer 120, a protective layer 130, and a patterned BM layer 140 and a colored layer on the protective layer 130. And an overcoat layer 160 covering the BM layer 140 and the colored layer 150.
오버코트층(160) 또한 상술한 고분자 재질로 형성될 수도 있다.The overcoat layer 160 may also be formed of the above-described polymer material.
이제 이러한 구조를 갖는 본 발명의 실시예에 따른 유연성 컬러필터의 제조 방법을 상세히 설명한다.Now, a method of manufacturing a flexible color filter according to an embodiment of the present invention having such a structure will be described in detail.
도 3a 내지 도 3g는 본 발명의 일 실시예에 따른 유연성 컬러필터의 제조 방법의 공정 단면도이다. 3A to 3G are cross-sectional views illustrating a method of manufacturing a flexible color filter according to an embodiment of the present invention.
먼저, 도 3a에 나타난 바와 같이, 캐리어 기판(170)을 준비한 후, 분리층 형성용 조성물을 도포하여 분리층(120)을 형성한다. First, as shown in FIG. 3A, after preparing the carrier substrate 170, a separation layer 120 is formed by applying a composition for forming a separation layer.
캐리어 기판(170)으로는 유리 기판을 사용하는 것이 바람직하지만, 이에 제한되지 않고 다른 재질을 사용할 수도 있다. 다만, 이후의 공정 온도를 견딜 수 있도록 고온에서도 변형이 되지 않는, 즉 평탄성을 유지할 수 있는 내열성을 가진 재료가 바람직하다.Although it is preferable to use a glass substrate as the carrier substrate 170, other materials may be used without being limited thereto. However, a material having heat resistance that does not deform even at high temperatures, that is, maintains flatness, to withstand the subsequent process temperature is preferable.
분리층 형성용 조성물을 도포하는 방법으로는 공지의 코팅 방법을 사용할 수 있다. 예를 들면, 스핀 코팅, 다이 코팅, 스프레이 코팅, 롤 코팅, 스크린 코팅, 슬릿 코팅, 딥 코팅, 그라비아 코팅 등을 들 수 있다. 또는 잉크젯 방식이 사용될 수도 있다. A well-known coating method can be used as a method of apply | coating the composition for separation layer formation. For example, spin coating, die coating, spray coating, roll coating, screen coating, slit coating, dip coating, gravure coating, etc. are mentioned. Alternatively, an inkjet method may be used.
분리층 형성용 조성물은 코팅 후 경화시켜 분리층(120)을 형성한다. 이때 경화 공정은 열경화 또는 UV경화를 단독으로 사용하거나, 열경화 및 UV 경화를 조합하여 사용할 수 있다. 열경화를 사용할 경우 오븐, 핫 플레이트 등에 의해 가열할 수 있으며, 가열 온도 및 시간은 조성물에 따라 달라질 수 있으나 일례로 80 내지 250 ℃에서 10 내지 120 분의 조건으로 열처리할 수 있다.The composition for forming the separation layer is cured after coating to form the separation layer 120. At this time, the curing process may be used by thermosetting or UV curing alone, or a combination of thermosetting and UV curing. In the case of using the thermal curing, it may be heated by an oven, a hot plate, etc., and the heating temperature and time may vary depending on the composition, but may be heat-treated under conditions of 10 to 120 minutes at 80 to 250 ° C.
다음으로, 도 3b에 나타난 바와 같이, 형성된 분리층(120) 상에 보호층(130)을 형성한다. Next, as shown in Figure 3b, to form a protective layer 130 on the separation layer 120 formed.
보호층(130)은 유기 절연막을 도포하여 형성하거나 무기 절연막을 증착하여 형성할 수 있다. 유기 절연막을 사용할 때의 도포 방법으로는 공지의 코팅 방법을 사용할 수 있다. 예를 들면, 스핀 코팅, 다이 코팅, 스프레이 코팅, 롤 코팅, 스크린 코팅, 슬릿 코팅, 딥 코팅, 그라비아 코팅 등을 들 수 있다. 또는 잉크젯 방식이 사용될 수도 있다. The protective layer 130 may be formed by applying an organic insulating film or by depositing an inorganic insulating film. As a coating method when using an organic insulating film, a well-known coating method can be used. For example, spin coating, die coating, spray coating, roll coating, screen coating, slit coating, dip coating, gravure coating, etc. are mentioned. Alternatively, an inkjet method may be used.
한편, 앞서 설명한 바와 같이 분리층(120)은 물리적인 힘에 의해 박리될 수 있으며 박리력이 매우 약하기 때문에 보호층(130)이 분리층(120)의 양 측면을 감싸는 형태로 형성되는 것이 바람직하다.On the other hand, as described above, since the separation layer 120 may be peeled off by physical force and the peeling force is very weak, it is preferable that the protective layer 130 is formed to surround both sides of the separation layer 120. .
다음, 도 3c에 나타난 바와 같이, 형성된 보호층(130) 상에 BM층(140)을 형성한다. BM층(140)은 불투명 유기 재료로 패터닝하여 형성할 수 있다.Next, as shown in FIG. 3C, the BM layer 140 is formed on the formed protective layer 130. The BM layer 140 may be formed by patterning with an opaque organic material.
이제, 도 3d에 나타난 바와 같이, BM층(140)의 패턴 사이의 영역에 적색(R), 녹색(G), 청색(B)의 착색층(150)을 형성한다. 착색층(150)을 구성하는 색상은 임의로 선택될 수 있으며, 각 색상별 형성의 순서 또한 임의로 선택할 수 있다. As shown in FIG. 3D, the colored layer 150 of red (R), green (G), and blue (B) is formed in the region between the patterns of the BM layer 140. The color constituting the colored layer 150 may be arbitrarily selected, and the order of formation for each color may also be arbitrarily selected.
본 발명의 실시예에 의하면, BM층(140)의 밀착성이 향상되므로 BM층(140)과 착색층(150)을 미세 패턴으로 구현할 수 있으며, 착색층(150) 형성 과정에서 BM층(140)의 손상이 최소화된다.According to the embodiment of the present invention, since the adhesion of the BM layer 140 is improved, the BM layer 140 and the colored layer 150 may be implemented in a fine pattern, and the BM layer 140 may be formed in the process of forming the colored layer 150. Damage is minimized.
다음으로, 도 3e에 나타난 바와 같이, 형성된 BM층(140)과 착색층(150) 상에 패턴 보호를 위한 오버코트층(160)을 형성한다.Next, as shown in FIG. 3E, an overcoat layer 160 for pattern protection is formed on the formed BM layer 140 and the colored layer 150.
다음, 도 3f에 나타난 바와 같이, 캐리어 기판(170)을 분리층(120)으로부터 분리한다.Next, as shown in FIG. 3F, the carrier substrate 170 is separated from the separation layer 120.
캐리어 기판(170)을 분리층(120)으로부터 분리하는 공정은 상온에서 진행되며, 예를 들면 유리 기판인 캐리어 기판(170)을 분리층(120)으로부터 떼어내는 물리적인 박리 방식에 의해 수행될 수 있다.The process of separating the carrier substrate 170 from the separation layer 120 is performed at room temperature, for example, may be performed by a physical peeling method of removing the carrier substrate 170, which is a glass substrate, from the separation layer 120. have.
박리하는 방법은 리프트오프(Lift-off) 또는 필오프(Peel-off)의 방법이 있으며 이에 한정되는 것은 아니다.The peeling method is a method of lift-off or peel-off, but is not limited thereto.
다음으로, 도 3g에 나타난 바와 같이, 캐리어 기판(170)이 제거된 분리층(120) 면에 기재 필름(110)을 부착한다. Next, as shown in FIG. 3G, the base film 110 is attached to the surface of the separation layer 120 from which the carrier substrate 170 is removed.
도면 상에 도시되지는 않았지만, 기재 필름(110)은 접착제층을 사용하여 분리층(120)에 접착될 수 있는데, 사용 가능한 접착제는 광경화형 접착제이며 광경화 후 별도의 건조 공정이 필요하지 않으므로 제조공정이 단순하여 생산성이 향상된다. 본 발명에서 사용되는 광경화형 접착제로는 해당 분야에서 사용되는 광경화형 접착제를 특별한 제한 없이 사용할 수 있다. 예를 들면, 에폭시 화합물 또는 아크릴계 단량체를 포함하는 조성물을 사용할 수 있다.Although not shown in the drawings, the base film 110 may be adhered to the separation layer 120 by using an adhesive layer, and the usable adhesive is a photocurable adhesive and does not require a separate drying process after photocuring. Simple process improves productivity. As the photocurable adhesive used in the present invention, a photocurable adhesive used in the art may be used without particular limitation. For example, a composition containing an epoxy compound or an acrylic monomer can be used.
또한, 상기 접착제층의 광경화에 있어서, 원자외선, 자외선, 근자외선, 적외선 등의 광선, X선, γ선 등의 전자파 외에, 전자선, 프로톤선, 중성자선 등을 이용할 수 있으나, 경화 속도, 조사 장치의 입수의 용이성, 가격 등으로부터 자외선 조사에 의한 경화가 유리하다.In addition, in the photocuring of the adhesive layer, electron beams, proton rays, neutron beams, etc., in addition to electromagnetic waves such as X-rays and γ-rays, rays such as ultraviolet rays, ultraviolet rays, near-ultraviolet rays, and infrared rays, may be used. Curing by ultraviolet irradiation is advantageous from the ease of obtaining the irradiation device, the price, and the like.
자외선 조사를 행할 때의 광원으로서는, 고압 수은등, 무전극 램프, 초고압 수은등, 카본 아크 램프, 제논 램프, 메탈할라이드 램프, 케미컬 램프, 블랙라이트 등이 이용될 수 있다.As a light source at the time of ultraviolet irradiation, a high pressure mercury lamp, an electrodeless lamp, an ultrahigh pressure mercury lamp, a carbon arc lamp, a xenon lamp, a metal halide lamp, a chemical lamp, a black light, etc. can be used.
이하에서, 본 발명의 보호층이 BM층의 밀착성을 향상시키는 효과를 확인하기 위하여 수행한 실험예와 비교예를 설명한다. 그러나, 이는 본 발명의 이해를 돕기 위하여 제시된 것으로서, 본 발명을 한정하고자 하는 의도는 아니다.Hereinafter, the experimental and comparative examples performed to confirm the effect of the protective layer of the present invention to improve the adhesion of the BM layer will be described. However, these are presented to aid the understanding of the present invention and are not intended to limit the present invention.
실험예 및 비교예Experimental Example and Comparative Example
실험예Experimental Example
5x5cm(두께: 0.7mm) 유리 기판을 준비하여 에탄올과 DI수로 기판을 세정한 다음, 열풍(Air blow) 건조하였다.A 5 × 5 cm (thickness: 0.7 mm) glass substrate was prepared, and the substrate was washed with ethanol and DI water, followed by air blow drying.
다음, 보호층의 도막을 형성하는데, 마이크로 피펫으로 0.70ml 방울을 떨어뜨리고 450rpm으로 10초 동안 스핀하여 5x5 스핀 코팅하였다. Next, to form a coating of the protective layer, by dropping 0.70ml drop with a micro pipette and spin for 10 seconds at 450rpm 5x5 spin coating.
스핀 후 약 3분 수평한 곳에서 방치하고, 100도에서 90초간 사전경화한 후 노광하고 230도에서 20분간 경화하여 1.15μm의 보호층을 형성하였다. After spin, the plate was left in a horizontal place for about 3 minutes, precured at 100 degrees for 90 seconds, exposed, and cured at 230 degrees for 20 minutes to form a protective layer of 1.15 μm.
다음에는 보호층 상부에 블랙 매트릭스층을 형성하였다. Next, a black matrix layer was formed on the protective layer.
이어서 상부 유리 기판과의 합착을 위하여, 상온에서 4시간 이상 방치하여 에이징하고 -20도에서 냉동 보관된 실런트를 지름 3-4mm로 도포하고 상부 유리 기판을 부착한 후 무게추로 1분간 가압하였다.Subsequently, in order to bond with the upper glass substrate, the mixture was left to stand at room temperature for at least 4 hours, aged, and the sealant, which was frozen and stored at −20 ° C., was applied to a diameter of 3-4 mm, and the upper glass substrate was attached and pressed for 1 minute with a weight.
다음 조도 18mW에서 7000mJ로 노광하고 200도에서 1시간 동안 경화하여 실험예의 시험편을 완성하였다. Next, the illuminance was exposed to 7000mJ at 18mW and cured at 200 ° C for 1 hour to complete the test piece of the experimental example.
이와 같이 형성된 시험편의 구조가 도 4a 및 도 4b에 나타나 있다. 도 4a 및 도 4b는 각각 완성된 시험편의 단면도와 평면도이다.The structure of the test piece thus formed is shown in FIGS. 4A and 4B. 4A and 4B are cross-sectional views and plan views, respectively, of completed test pieces.
도 4a에 나타난 바와 같이, 시험편은 하부 유리 기판(710)과 보호층(720), BM층(730), 실런트(740), 상부 유리 기판(750)이 차례로 적층된 구조를 가지며, 도 4b에 나타난 바와 같이, 상부 유리 기판(750)과 하부 유리 기판(710)이 교차되도록 적층되어 있다.As shown in FIG. 4A, the test piece has a structure in which a lower glass substrate 710, a protective layer 720, a BM layer 730, a sealant 740, and an upper glass substrate 750 are sequentially stacked. As shown, the upper glass substrate 750 and the lower glass substrate 710 are stacked to intersect.
비교예Comparative example
비교예는 위와 동일한 조건으로 시험편을 제조하되 보호층이 없이 유리 기판 상에 BM층을 형성한 구조로서, 그 단면도가 도 5에 나타나 있다.Comparative Example prepared the test specimen under the same conditions as above but without the protective layer As a structure in which a BM layer is formed on a substrate, its cross section is shown in FIG.
도 5에 나타난 바와 같이, 비교예에는 보호층이 형성되어 있지 않고, 하부 유리 기판(810)과 BM층(830), 실런트(840), 상부 유리 기판(850)만이 차례로 적층된 구조를 갖는다.As shown in FIG. 5, the protective layer is not formed in the comparative example, and only the lower glass substrate 810, the BM layer 830, the sealant 840, and the upper glass substrate 850 are sequentially stacked.
다음, UTM 시험기 INSTRON 5567을 사용한 테스트를 통하여 블랙 매트릭스의 밀착성을 측정하였다. 구체적으로 10mm/min의 속도로 상부 및 하부 유리 기판을 각각 위 아래로 잡아당겨 블랙 매트릭스로부터 하부 유리 기판이 분리되기까지의 최대 하중 값을 실런트 면적 비율로 계산하였다.Next, the adhesion of the black matrix was measured through a test using a UTM tester INSTRON 5567. Specifically, the maximum load value until the upper and lower glass substrates were pulled up and down, respectively, at a speed of 10 mm / min and the lower glass substrate was separated from the black matrix was calculated as the sealant area ratio.
다음의 표 1에 측정 결과가 도시되어 있다. Table 1 shows the measurement results.
하중(N/mm2)Load (N / mm 2 ) 비교예Comparative example 본 발명(실험예)Invention (Experimental Example)
AVEAVE 2.092.09 2.612.61
MAXMAX 2.752.75 2.892.89
MINMIN 1.441.44 2.132.13
RNGRNG 1.311.31 0.770.77
STDEVSTDEV 0.440.44 0.220.22
표 1에서 나타난 바와 같이, 비교예와 비교할 때 본 발명의 실험예에서는 평균 하중이 2.61 N/mm2로 보호층이 형성되지 않은 비교예에 비해 0.52 N/mm2의 추가 하중을 견딜 수 있음을 알 수 있으며, 본 발명의 실험예의 최대 하중과 최소 하중의 범위(0.77)와 표준편차(0.22)는 비교예에 비해 절반 정도로 매우 안정된 밀착 성능을 나타내는 것을 보여준다.As shown in Table 1, in the experimental example of the present invention compared to the comparative example, the average load is 2.61 N / mm 2 It can withstand an additional load of 0.52 N / mm 2 compared to the comparative example without a protective layer formed As can be seen, the range of the maximum load and the minimum load (0.77) and the standard deviation (0.22) of the experimental example of the present invention shows a very stable adhesion performance about half as compared to the comparative example.
이상에서 구체적인 실시예와 실험예를 참조하여 본 발명을 설명하였으나, 본 발명의 본질적인 특성에서 벗어나지 않는 범위에서 다양하게 변형된 형태로 본 발명이 구현될 수 있음을 이해할 수 있을 것이다.Although the present invention has been described above with reference to specific examples and experimental examples, it will be understood that the present invention can be implemented in various modified forms without departing from the essential characteristics of the present invention.
그러므로 명시된 실시예들은 한정적인 관점이 아니라 설명적인 관점에서 고려되어야 하고, 본 발명의 범위는 전술한 설명이 아니라 특허청구 범위에 나타나 있으며, 그와 동등한 범위 내에 있는 모든 차이점은 본 발명에 포함된 것으로 해석되어야 할 것이다.Therefore, the described embodiments should be considered in descriptive sense only and not for purposes of limitation, and the scope of the present invention is shown in the claims rather than the foregoing description, and all differences within the equivalent scope are included in the present invention. It should be interpreted.
[부호의 설명][Description of the code]
110: 기재 필름110: base film
120: 분리층 130: 보호층 120: separation layer 130: protective layer
140: 블랙 매트릭스층 150: 착색층 140: black matrix layer 150: colored layer
160: 오버코트층 170: 캐리어 기판160: overcoat layer 170: carrier substrate

Claims (10)

  1. 분리층;Separation layer;
    상기 분리층 상에 형성된 보호층;A protective layer formed on the separation layer;
    상기 보호층 상에 형성된 블랙 매트릭스층; 및A black matrix layer formed on the protective layer; And
    상기 블랙 매트릭스층 사이에 형성된 착색층; A colored layer formed between the black matrix layers;
    을 포함하며,Including;
    상기 블랙 매트릭스층의 하부층과의 분리 하중은 2.5 N/mm2 이상인,Separation load with the lower layer of the black matrix layer is 2.5 N / mm 2 or more,
    유연성 컬러필터.Flexible color filter.
  2. 제 1 항에 있어서,The method of claim 1,
    상기 보호층은 상기 분리층의 측면까지 감싸도록 형성된,The protective layer is formed to surround the side of the separation layer,
    유연성 컬러필터.Flexible color filter.
  3. 제 1 항에 있어서,The method of claim 1,
    상기 분리층의 하부에 배치된 기재필름을 더 포함하는, Further comprising a base film disposed under the separation layer,
    유연성 컬러필터.Flexible color filter.
  4. 제 1 항에 있어서,The method of claim 1,
    상기 블랙 매트릭스층 및 착색층 위에 형성된 오버코트층을 더 포함하는,Further comprising an overcoat layer formed on the black matrix layer and the colored layer,
    유연성 컬러필터.Flexible color filter.
  5. 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,The method according to any one of claims 1 to 4,
    상기 보호층은 유기 절연막 또는 무기 절연막 중 적어도 하나를 포함하는,The protective layer includes at least one of an organic insulating film or an inorganic insulating film,
    유연성 컬러필터.Flexible color filter.
  6. 제 1 항 내지 제 4 항 중 어느 한 항에 따른 유연성 컬러필터를 포함하는 유연성 디스플레이 장치.A flexible display device comprising the flexible color filter according to any one of claims 1 to 4.
  7. 캐리어 기판 상에 분리층 형성용 조성물을 도포하여 분리층을 형성하는 단계;Applying a composition for forming a separation layer on a carrier substrate to form a separation layer;
    상기 분리층 상에 보호층을 형성하는 단계;Forming a protective layer on the separation layer;
    상기 보호층 상에 블랙 매트릭스층을 형성하고, 그 사이에 착색층을 형성하는 단계; 및Forming a black matrix layer on the protective layer, and forming a colored layer therebetween; And
    상기 캐리어 기판을 제거하는 단계; Removing the carrier substrate;
    를 포함하며,Including;
    상기 블랙 매트릭스층의 하부층과의 분리 하중은 2.5 N/mm2 이상인,Separation load with the lower layer of the black matrix layer is 2.5 N / mm 2 or more,
    유연성 컬러필터의 제조 방법.Method for producing a flexible color filter.
  8. 제 7 항에 있어서,The method of claim 7, wherein
    상기 보호층은 보호층 형성용 조성물을 도포하거나 증착하여 형성하는,The protective layer is formed by coating or depositing a composition for forming a protective layer,
    유연성 컬러필터의 제조 방법. Method for producing a flexible color filter.
  9. 제 7 항에 있어서,The method of claim 7, wherein
    상기 블랙 매트릭스층 및 착색층 위에 오버코트층을 형성하는 단계Forming an overcoat layer on the black matrix layer and the colored layer
    를 더 포함하는 유연성 컬러필터의 제조 방법. Method of manufacturing a flexible color filter further comprising.
  10. 제 7 항에 있어서,The method of claim 7, wherein
    상기 캐리어 기판을 제거하는 단계 이후에, After removing the carrier substrate,
    상기 캐리어 기판이 제거된 면 상에 기재필름을 부착하는 단계Attaching a base film on a surface from which the carrier substrate is removed
    를 더 포함하는 유연성 컬러필터의 제조 방법. Method of manufacturing a flexible color filter further comprising.
PCT/KR2017/003251 2016-03-31 2017-03-27 Flexible color filter and manufacturing method therefor WO2017171324A1 (en)

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