WO2019160296A1 - Flexible touch sensor having color filter integrated therein, and manufacturing method therefor - Google Patents

Abstract

The present invention relates to a flexible touch sensor having a color filter integrated therein and a manufacturing method therefor, the flexible touch sensor having an intermediate substrate bonded on a color filter layer, and a touch sensor layer formed on the intermediate substrate.

Description

Color filter integrated flexible touch sensor and its manufacturing method

The present invention relates to a color filter integrated flexible touch sensor and a method of manufacturing the same.

As the touch input method is spotlighted as the next generation input method, the touch input method is introduced to various electronic devices.

In particular, as ultra-thin flexible displays that achieve ultra-light weight, low power, and improved portability are attracting attention as next-generation displays, development of touch sensors applicable to such displays is required.

The flexible display device refers to a display device fabricated on a flexible substrate that can bend, bend, or roll without loss of properties, and technology development is in progress in the form of flexible LCD, flexible OLED, and electronic paper.

In order to apply a touch input method to a flexible display device, a capacitive touch sensor panel overlaid on an LCD or an OLED can be used. The capacitive touch sensor panel is formed of a substantially transparent conductive material such as indium tin oxide (ITO). It may be formed of a matrix of predetermined touch driving lines and touch sensing lines. These touch drive lines and touch sense lines are often arranged in rows and columns on substantially transparent substrates. When an object such as a user's finger is near the intersection of the touch drive line and the touch sense line, the capacitance between the touch drive line and the touch sense line may change. This change in capacitance can indicate that a touch is taking place at this location.

However, when the capacitive touch sensor panel is overlaid on an LCD or an OLED, there are problems such as an increase in thickness and weight of a display device, a decrease in brightness, and an increase in manufacturing cost.

Accordingly, attempts have been made to integrate the touch sensor into the display device.

For example, Korean Patent Laid-Open No. 10-2017-0135174 includes: a plurality of color filters arranged in first and second directions on a substrate; A touch block electrode disposed on the color filter to sense a touch position of a user; A black matrix disposed on the touch block electrode between the color filters; Disclosed is a color filter array having a touch sensor disposed in one of the first and second directions and having a touch sensing line connected to the touch block electrode.

However, in such a method, since the color filter, the touch block electrode, the black matrix, and the touch sensing line are sequentially stacked on the substrate, the flatness of the process is lowered, which may cause a defect.

In addition, the uniformity of characteristics such as resistance value and transmittance cannot be maintained due to the influence of the lower step and bending toward the upper layer, which causes problems such as driving noise or pattern recognition.

In addition, a polarizing plate is generally attached to an organic light emitting display device to improve optical characteristics such as anti-reflection, and a touch sensor for implementing a touch interface with a user is attached to the organic light emitting display.

On the other hand, since the thickness of the polarizing plate is about 100-150 μm, which is considerably thick, no matter how thin the thickness of the touch sensor is, if the polarizing plate and the touch sensor are separately attached to the organic light emitting display device, the organic light emitting diode is emitted due to the thickness of the polarizing plate. There is a problem that the flexibility of the display device is lowered.

SUMMARY OF THE INVENTION The present invention has been made in the technical background as described above, and its object is to implement two functional devices on one flexible substrate by integrating a color filter and a touch sensor.

Another object of the present invention is to realize a thinner and more flexible flexible display device by integrating a color filter and a touch sensor using one flexible substrate.

Another object of the present invention is to provide a color filter integrated flexible touch sensor excellent in uniformity and reducing defects caused by lowering flatness, and a method of manufacturing the same.

Another object of the present invention is to replace the anti-reflective polarizing plate provided in the organic light emitting display with a color filter to reduce the external light reflectance of the organic light emitting display and to improve color reproducibility.

In order to solve this problem, in the present invention; A color filter layer on the separation layer; An adhesive layer on the color filter layer; An intermediate substrate on the adhesive layer; And it provides a color filter integrated flexible touch sensor comprising a touch sensor layer on the intermediate substrate.

The intermediate substrate may be a glass substrate or a film substrate.

The intermediate substrate may include a refractive index adjusting layer.

The adhesive layer may be made of a photocurable adhesive.

The color filter integrated flexible touch sensor may further include a protective layer between the separation layer and the color filter layer.

The color filter integrated flexible touch sensor may further include an overcoat layer between the color filter layer and the adhesive layer.

According to another aspect of the invention, forming a separation layer on a carrier substrate; Forming a color filter layer on the separation layer; Forming an adhesive layer on the color filter layer; Bonding an intermediate substrate on the adhesive layer; Forming a touch sensor layer on the intermediate substrate; And it provides a method of manufacturing a color filter integrated flexible touch sensor comprising the step of separating the carrier substrate.

The adhesive layer may be formed of a photocurable adhesive, and the bonding of the intermediate substrate may include disposing the intermediate substrate on the adhesive layer; And photocuring the adhesive layer.

The method of manufacturing a color filter integrated flexible touch sensor according to the present invention further includes attaching a protective film on the touch sensor layer after forming the touch sensor layer, and after separating the carrier substrate. The method may further include removing the protective film.

The method may further include forming a protective layer between the separation layer and the color filter layer.

The method of manufacturing the color filter integrated flexible touch sensor may further include forming a refractive index control layer on the intermediate substrate.

The method of manufacturing the color filter integrated flexible touch sensor may further include forming an overcoat layer on the color filter layer.

According to still another aspect of the present invention, there is provided a flexible display device including the color filter integrated flexible touch sensor as described above.

The flexible display device may be an organic light emitting display device.

In the color filter integrated flexible touch sensor of the present invention, two functional devices may be implemented with one flexible substrate by integrating the color filter and the touch sensor.

In the color filter integrated flexible touch sensor of the present invention, a thinner and more flexible display device can be obtained by integrating the color filter and the touch sensor using one flexible substrate.

In the color filter integrated flexible touch sensor of the present invention, the flatness is improved by using an intermediate substrate, thereby reducing the occurrence of defects, thereby obtaining a uniform and excellent touch input sensing performance.

When the color filter integrated flexible touch sensor of the present invention is applied to an organic light emitting display device, a color filter can be used to replace the anti-reflective polarizing plate, thereby reducing the external light reflectance and improving color reproducibility of the organic light emitting display device. The thickness can be significantly reduced.

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

2A to 2G are cross-sectional views of each step according to a method of manufacturing a color filter integrated flexible touch sensor according to an exemplary embodiment of the present invention.

3 is a cross-sectional view of a display device including a color filter integrated flexible touch sensor according to an exemplary embodiment.

Hereinafter, with reference to the drawings will be described in detail a preferred embodiment of the color filter integrated flexible touch sensor according to the present invention and a manufacturing method thereof. 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.

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

Referring to FIG. 1, the color filter integrated flexible touch sensor 10 according to an exemplary embodiment of the present invention may include a separation layer 110, a protective layer 120 on the separation layer 110, and an upper portion of the protective layer 120. A color filter layer formed on the black matrix 130 and the pixel region 140, an adhesive layer 150 on the color filter layer, an intermediate substrate 200 on the adhesive layer 150, and a touch sensor on the intermediate substrate 200. Layer 300.

The separation layer 110 is a layer formed for peeling with the carrier substrate after the manufacture of the color filter integrated flexible touch sensor in the manufacturing process of the present invention. Therefore, the separation layer 110 may be separated from the carrier substrate through physical force.

The material of the separation layer 110 is not particularly limited as long as a condition of providing a certain level of peeling force and transparency is satisfied. For example, the separation layer 110 may be a polyimide polymer, a polyvinyl alcohol polymer, a polyamic acid polymer, a polyamide polymer, polyethylene Polymer, polystylene polymer, polynorbornene polymer, phenylmaleimide copolymer polymer, polyazobenzene polymer, polyphenylenephthalamide polymer , Polyester (polyester) polymer, polymethyl methacrylate (polymer) polymer, polyarylate (polymer) polymer, cinnamate (polymer) polymer, coumarin (coumarin) polymer, phthalimidine (phthalimidine) ) -Based polymers, chalc (chalcone) -based polymers, aromatic acetylene (aromatic acetylene) may be made of a polymer such as polymers, these alone or 2 Or more may be mixed and used.

The peeling force of the separation layer 110 is not particularly limited, but may be, for example, 0.01N / 25mm or more and 1N / 25mm or less, preferably 0.01N / 25mm or more and 0.1N / 25mm or less. When satisfying the above range, in the manufacturing process of the color filter integrated flexible touch sensor of the present invention, it can be easily peeled off from the carrier substrate without residue, curl and crack due to the tension generated during peeling Can be reduced.

The thickness of the separation layer 110 is not particularly limited, but may be, for example, 10 to 1,000 nm, preferably 50 to 500 nm. When the said range is satisfied, peeling force is stable and a uniform pattern can be formed.

The protective layer 120 is a layer for protecting the separation layer 110 and is an optional component formed on the separation layer 110 and may be omitted as necessary.

The protective layer 120 is a process chemical, a developer, a process such as a solvent of a color filter photoresist for which the separation layer 110 is used to form a color filter during the process of manufacturing the color filter integrated flexible touch sensor of the present invention. It is prevented from being damaged by exposure to the cleaning liquid generated in the liver.

The material of the protective layer 120 may be a polymer known in the art without limitation, for example, an organic insulating film may be applied, and among these, a curable composition comprising a polyol and a melamine curing agent. It may be formed as, but is not limited thereto.

Specific examples of the polyol include, but are not limited to, polyether glycol derivatives, polyester glycol derivatives, polycaprolactone glycol derivatives, and the like.

Specific types of melamine curing agents include methoxy methyl melamine derivatives, methyl melamine derivatives, butyl melamine derivatives, isobutoxy melamine derivatives and butoxy melamine Derivatives and the like, but are not limited thereto.

As another example, the protective layer 120 may be formed of an organic-inorganic hybrid curable composition, and when using an organic compound and an inorganic compound at the same time, it is preferable in that the cracks generated during peeling may be reduced.

As the organic compound, the above-described components may be used, and the inorganic material may include silica-based nanoparticles, silicon-based nanoparticles, glass nanofibers, and the like, but is not limited thereto.

The color filter layer including the black matrix 130 and the pixel region 140 is formed on the protective layer 120, and functions to reduce external light reflectance and to improve color reproducibility of the display.

Meanwhile, when the protective layer 120 is omitted, the color filter layer may be disposed on the separation layer 110.

The black matrix 130 is a light blocking layer that blocks light in portions other than the pixel region 140 and prevents color mixing at the boundary of each pixel region. Therefore, the black matrix 130 is formed of an opaque material, and the pixel Patterned to surround area 140.

The pixel region 140 is a colored layer for color display for color display, and typically includes red, green, and blue regions, and the region is defined by a black matrix 130 pattern. .

However, the pixel area 140 does not have to include all of red, green, and blue, or only red, green, and blue, and may include only some of the colors or white (depending on the color representation of the display device). Other colors such as White) may be further included.

When the color filter integrated flexible touch sensor according to the exemplary embodiment of the present invention is applied to the organic light emitting display, the color filter layer may reduce the external light reflectance of the organic light emitting display and improve color reproducibility by replacing the anti-reflective polarizing plate.

Although not shown in the drawings, an overcoat layer may be further included on the color filter layer. However, in general, the overcoat layer is formed for flattening. In the color filter integrated flexible touch sensor according to the exemplary embodiment of the present invention, the flattening is more advantageously achieved by the adhesive layer 150 and the intermediate substrate 200 which will be described later. There is an advantage that does not need to form. This also enables the simplification of the process and the thinning of the device.

An adhesive layer 150 is formed on the color filter layer, and the intermediate substrate 200 is attached by the adhesive layer 150.

The adhesive layer 150 performs two functions of flattening the stepped portion of the surface of the color filter layer that is not planarized and attaching the intermediate substrate 200 on the color filter layer.

As the adhesive layer 150, a photocurable adhesive may be used, and the 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.

As the intermediate substrate 200, a thin glass substrate or a flexible film substrate may be used, and in particular, a transparent film may be used.

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, silicone type, can also be used.

Although the thickness of such a transparent film can be suitably determined, it is generally about 1-500 micrometers in terms of workability, thinness, etc., such as intensity | strength and handleability, and 1-300 micrometers is preferable, and 5-200 micrometers is More preferred.

Such a transparent film may contain an appropriate one or more additives. As an additive, a ultraviolet absorber, antioxidant, a lubricating agent, a plasticizer, a mold release agent, a coloring agent, a flame retardant, 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.

In addition, the transparent film may be surface-treated as needed. Such surface treatments include dry treatments such as plasma treatments, corona treatments, primer treatments, and chemical treatments such as alkali treatments including saponification treatments.

In addition, the intermediate substrate 200 may include an index matching layer (not shown).

The refractive index control layer is to improve the optical uniformity of the color filter integrated flexible touch sensor. Specifically, the refractive index control layer reduces the difference in optical characteristics due to the structural differences of the patterns of the touch sensor layer 300 on the intermediate substrate 200. In the case of including the refractive index adjusting layer, the visibility of the sensing pattern may be improved by reducing the difference in reflectance between the pattern portion and the non-patterning portion of the sensing pattern.

The refractive index control layer may be composed of a single film having a high refractive index of 1.5 to 1.87, the thickness may be 30nm-2000nm.

Alternatively, the refractive index adjusting layer may be formed by stacking at least two layers having different refractive indices. In the case of a multilayer film, high and low refractive materials may be repeatedly formed.

As one example, the refractive index control layer may be configured to include an inorganic insulating film, specific examples, SiO ₂ , Al ₂ O ₃ , MgO, NdF ₃ , SiON, Y ₂ O ₃ , ZnO, TiO ₂ , ZrO ₂ , Nb It may be configured to include one or more selected from the group consisting of ₂ O ₅ .

As another example, the refractive index control layer may be configured to include an organic insulating layer, and as a specific example, the refractive index control layer may be configured to include an organic material containing inorganic fine particles.

When the refractive index control layer comprises an organic material containing inorganic fine particles, for example, the organic material is one selected from the group consisting of acrylic resins, urethane resins, melamine resins, alkyd resins, siloxane-based polymers and organic silane condensates. It may include the above, but is not limited thereto.

When the refractive index control layer comprises an organic material containing inorganic fine particles, the inorganic fine particles are SiO ₂ , Al ₂ O ₃ , MgO, NdF ₃ , SiON, Y ₂ O ₃ , ZnO, TiO ₂ , ZrO ₂ , Nb ₂ It may be configured to include one or more selected from the group consisting of O ₅ , but is not limited thereto.

When the refractive index adjusting layer includes an organic material containing inorganic fine particles, for example, the refractive index of the refractive index adjusting layer may be adjusted by adjusting the content of the inorganic fine particles. For example, the refractive index of the refractive index control layer may be increased by increasing the content of the inorganic fine particles, and conversely, the refractive index of the refractive index control layer may be reduced by reducing the content of the inorganic fine particles.

The refractive index adjusting layer may be formed by a deposition process or a wet coating method.

The touch sensor layer 300 is formed on the intermediate substrate 200.

The touch sensor layer 300 has a structure of an electrode pattern used in a capacitive touch sensor, and a mutual capacitive type or a self-capacitive type may be applied.

In the case of the mutual capacitance type, the grid electrode structure may be a horizontal axis and a vertical axis. The intersection electrode of the horizontal axis and the vertical axis may include a bridge electrode.

In the case of the self capacitance method, an electrode pattern structure of a method of reading capacitance change using one electrode at each point may be provided.

The electrode of the touch sensor layer 300 may be formed of one or more materials selected from metals, metal nanowires, metal oxides, carbon nanotubes, graphene, conductive polymers, and conductive inks.

Here, the metal may be any one of gold, silver, copper, molybdenum, aluminum, palladium, neodium, platinum, zinc, tin, titanium, or an alloy thereof.

The metal nanowires may be any one of silver nanowires, copper nanowires, zirconium nanowires, and gold nanowires.

In addition, the metal oxide is indium tin oxide (ITO), indium zinc oxide (IZO), indium zinc tin oxide (IZTO), aluminum zinc oxide (AZO), gallium zinc oxide (GZO), florin tin oxide (FTO), zinc oxide (ZnO) can be any one.

The conductive polymer includes polypyrrole, polythiophene, polyacetylene, PODOT, and polyaniline, and the conductive ink includes an ink in which a metal powder and a curable polymer binder are mixed. Include.

In addition, the electrode of the touch sensor layer 300 may be made of a laminated structure of two or more conductive layers in some cases in order to reduce the electrical resistance.

When the electrode of the touch sensor layer 300 is formed of a metal or a metal mesh, the black matrix 130 pattern and the electrode pattern of the color filter layer may correspond to each other.

The thickness of the touch sensor layer 300 is not particularly limited, but in consideration of the flexibility of the color filter integrated flexible touch sensor, the touch sensor layer 300 is preferably a thin film.

For example, the sensing electrode patterns constituting the touch sensor layer 300 may be a polygonal pattern of three, four, five, six, or seven, respectively, independently of each other.

Also, for example, the touch sensor layer 300 may include a rule pattern. A regular pattern means that the pattern form has regularity. For example, the sensing electrode patterns may independently include a mesh shape such as a rectangle or a square, or a pattern like a hexagon.

Also, for example, the touch sensor layer 300 may include an irregular pattern. Irregular pattern means that the shape of the pattern does not have regularity.

Also, for example, when the sensing electrode patterns constituting the touch sensor layer 300 are formed of a material such as metal nanowires, carbon-based materials, polymer materials, or the like, the sensing electrode patterns may have a network structure. When the sensing electrode patterns have a network structure, signals are sequentially transmitted to adjacent patterns in contact with each other, thereby realizing a pattern having high sensitivity.

As such, since the touch sensor layer 300 is formed on the intermediate substrate 200, each electrode pattern of the touch sensor layer 300 is formed on a flattened surface that is not affected by the step of the color filter layer. This can minimize the influence of the lower layer in the deposition, photography, and etching process of manufacturing the touch sensor, and ensures uniformity of characteristics such as resistance value and transmittance of the touch sensor electrode.

That is, in the present invention, the thin film may be achieved by integrating the color filter and the touch sensor using a single flexible substrate.

In order to improve the flexible performance of the flexible device, the device should be designed in a structure that eliminates or reduces stress caused by bending and folding of the device. Cracks that are susceptible to stress in the flexible device are likely to cause cracks, and when cracks occur, deterioration deformation such as deterioration of the layer and disconnection of electrodes occurs, and corrosion occurs due to the penetration of moisture and oxygen into the crack generating part. It causes a decrease in reliability such as acceleration.

In other words, when the thickness of the flexible device is thick, it is located farther from the neutral surface than when it is thin, and thus the stress generated during bending and folding acts to a wide area, and the magnitude of the stress also increases. Therefore, the closer the portion vulnerable to the stress from the neutral plane, the smaller the stress is, thereby improving reliability.

In the present invention, through the thinning of the flexible device, it is possible to obtain an improvement in flexibility and an improvement in reliability.

In addition, by forming a color filter and a touch sensor on both sides of the substrate using a single flexible substrate, the alignment accuracy of the color filter and the touch sensor can be improved, and the color filter and the touch sensor can be formed on flat surfaces, respectively. The result is uniform visual and driving characteristics.

Now, a method of manufacturing a color filter integrated flexible touch sensor according to an embodiment of the present invention will be described in detail. 2A to 2G are cross-sectional views of respective steps according to a method of manufacturing a color filter integrated flexible touch sensor according to an exemplary embodiment of the present invention.

The method of manufacturing a color filter integrated flexible touch sensor according to an exemplary embodiment of the present invention uses a method of removing a carrier substrate by using a transfer method after performing a process on a carrier substrate.

First, as shown in FIG. 2A, after preparing a carrier substrate 400, a separation layer 110 is formed by applying a composition for forming a separation layer.

Although it is preferable to use a glass substrate as the carrier substrate 400, 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 | 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.

The composition for forming the separation layer is cured after coating to form the separation layer 110. 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 thermal curing, heating may be performed by an oven, a hot plate, or the like, and 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.

Next, the protective layer forming composition is applied to the formed separation layer 110 to form a protective layer 120.

The separation layer 110 may be peeled from the carrier substrate 400 by a physical force after the process on the carrier substrate 400, which is because the peeling force is very weak, the protective layer 120 for this purpose It is formed on the 110, the protective layer 120 may be formed to surround the separation layer 110 to its side.

The coating method and the curing process of the composition for forming a protective layer are as described above in connection with the formation of the separation layer.

As shown in FIG. 2B, the black matrix 130 and the pixel region 140 are formed on the formed protective layer 120. The black matrix 130 is formed by patterning with an opaque organic material, and forms the pixel regions 140 of red (R), green (G), and blue (B) in a region defined by the black matrix 130 pattern. . As described above, the color constituting the pixel region 140 may be arbitrarily selected, and the order of formation for each color may also be arbitrarily selected.

Next, as shown in FIG. 2C, an adhesive layer 150 is coated on the black matrix 130 and the pixel region 140. The adhesive used as the adhesive layer 150 is a photocurable adhesive as described above, which does not require a separate drying process after the photocuring, so that the manufacturing process is simple and productivity is improved.

Although not shown in the drawings, an overcoat layer may be further formed on the black matrix 130 and the pixel region 140 as needed. In this case, the adhesive layer 150 may be applied on the overcoat layer. Can be.

After applying the adhesive layer 150, as shown in FIG. 2D, the intermediate substrate 200 is disposed on the adhesive layer 150, and as shown in FIG. 2E, the adhesive layer 150 is photocured to form the intermediate substrate 200. Is bonded onto the color filter layer including the black matrix 130 and the pixel region 140.

In the photocuring of the adhesive layer, electron beams, proton rays, neutron beams, and the like can 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, γ-rays, etc. Hardening by ultraviolet irradiation is advantageous from the ease of use, price, and the like.

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.

2F, the touch sensor layer 300 is formed on the bonded intermediate substrate 200.

The structure of the touch sensor layer 300 and a method of manufacturing the same may be used without limitation in the art, which is not particularly limited in the present invention.

When the formation of the touch sensor layer 300 is completed, as shown in FIG. 2G, the color filter integrated flexible touch sensor is separated from the carrier substrate 400.

Although not shown in the drawings, in order to protect the touch sensor, the protective film may be attached to the touch sensor layer 300 and the protective film may be removed again after removing the carrier substrate 400.

The color filter integrated flexible touch sensor according to an exemplary embodiment of the present invention may be combined with a display layer to be used for a display device.

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

Referring to FIG. 3, a display device according to an embodiment of the present invention may include a color filter integrated flexible touch sensor 10 and a color filter integrated flexible touch sensor 10 according to an embodiment of the present invention as described above. The display layer 20 is formed.

As the display layer 20, any one applicable to a flexible display device may be used without limitation, and may be, for example, an OLED layer or an LCD layer. In particular, when the display layer 20 is an OLED layer, the color filter integrated flexible touch sensor 10 according to the exemplary embodiment of the present invention may have a function of replacing an antireflective polarizing plate.

The preferred embodiment of the present invention has been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiments, and it will be understood that the present invention can be implemented in a modified form without departing from the essential characteristics of the present invention. The above-described embodiments of the present invention may be applied independently or in combination with some or all of its features.

Therefore, the scope of the present invention is defined by the claims rather than the foregoing description, and all differences within the scope will be construed as being included in the present invention.

[Description of the code]

10: color filter integrated flexible touch sensor 20: display layer

110: separation layer 120: protective layer

130: black matrix 140: pixel area

150: adhesive layer 200: intermediate substrate

300: touch sensor layer 400: carrier substrate

Claims (14)

1. Separation layer;

   A color filter layer on the separation layer;

   An adhesive layer on the color filter layer;

   An intermediate substrate on the adhesive layer; And

   Color filter integrated flexible touch sensor comprising a touch sensor layer on the intermediate substrate.
2. The method of claim 1,

   The intermediate substrate is a color filter integrated flexible touch sensor is a glass substrate or a film substrate.
3. The method of claim 1,

   The intermediate substrate is a color filter integrated flexible touch sensor comprising a refractive index control layer.
4. The method of claim 1,

   The adhesive layer is a color filter integrated flexible touch sensor made of a photocurable adhesive.
5. The method of claim 1,

   A color filter integrated flexible touch sensor further comprising a protective layer between the separation layer and the color filter layer.
6. The method of claim 1,

   The color filter integrated flexible touch sensor further comprises an overcoat layer between the color filter layer and the adhesive layer.
7. Forming a separation layer on the carrier substrate;

   Forming a color filter layer on the separation layer;

   Forming an adhesive layer on the color filter layer;

   Bonding an intermediate substrate on the adhesive layer;

   Forming a touch sensor layer on the intermediate substrate; And

   The manufacturing method of a color filter integrated flexible touch sensor comprising the step of separating the carrier substrate.
8. The method of claim 7, wherein

   The adhesive layer is made of a photocurable adhesive;

   Bonding the intermediate substrate is

   Disposing the intermediate substrate on the adhesive layer; And

   The method of manufacturing a color filter integrated flexible touch sensor comprising the step of photocuring the adhesive layer.
9. The method of claim 7, wherein

   After forming the touch sensor layer,

   Attaching a protective film on the touch sensor layer;

   After separating the carrier substrate,

   The method of manufacturing a color filter integrated flexible touch sensor further comprising the step of removing the protective film.
10. The method of claim 7, wherein

    Forming a protective layer between the separation layer and the color filter layer further comprising a color filter integrated flexible touch sensor.
11. The method of claim 7, wherein

    Forming a refractive index control layer on the intermediate substrate further comprising the color filter integrated flexible touch sensor manufacturing method.
12. The method of claim 7, wherein

    And forming an overcoat layer on the color filter layer.
13. The flexible display device of claim 1, further comprising a color filter integrated flexible touch sensor.
14. The method of claim 13,

    The flexible display device is a liquid crystal display device or an organic light emitting display device.

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