WO2017142188A1 - 폴더블 터치 센서 및 그 제조방법 - Google Patents

폴더블 터치 센서 및 그 제조방법 Download PDF

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Publication number
WO2017142188A1
WO2017142188A1 PCT/KR2016/015454 KR2016015454W WO2017142188A1 WO 2017142188 A1 WO2017142188 A1 WO 2017142188A1 KR 2016015454 W KR2016015454 W KR 2016015454W WO 2017142188 A1 WO2017142188 A1 WO 2017142188A1
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WIPO (PCT)
Prior art keywords
touch sensor
region
layer
protective layer
foldable
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PCT/KR2016/015454
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English (en)
French (fr)
Korean (ko)
Inventor
이진구
윤호동
최병진
Original Assignee
동우화인켐 주식회사
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Publication of WO2017142188A1 publication Critical patent/WO2017142188A1/ko

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes

Definitions

  • the present invention relates to a foldable touch sensor. More specifically, the present invention relates to a foldable touch sensor and a method of manufacturing the same, which can improve foldable characteristics while maintaining durability.
  • a touch sensor is a device that detects a touch point in response to the touch when a user touches an image displayed on a screen with a finger or a touch pen.
  • the touch sensor is generally manufactured in a structure that is overlaid on a display device such as a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • a display device such as a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • the thickness of the protective layer protecting the internal components should be reduced, but the durability of the touch sensor is deteriorated in proportion to the reduction in the thickness of the protective layer.
  • An object of the present invention is to provide a foldable touch sensor and a method of manufacturing the same, which can improve foldable characteristics while maintaining durability.
  • the foldable touch sensor according to the present invention is formed on a base layer, a touch sensor layer formed on the base layer and the touch sensor layer, and is thicker than the first area and the first area formed along one direction.
  • the protective layer has a thickness of 0.5 ⁇ m or more and 10 ⁇ m or less.
  • the minimum thickness of the first region is 0.5 ⁇ m or more and 1.5 ⁇ m or less.
  • the thickness of the second region is 1.5 ⁇ m or more and 10 ⁇ m or less.
  • the first region has an inclined surface shape in which the thickness becomes thinner as it approaches the folding line.
  • the first region has a curved shape in which the thickness becomes thinner as it approaches the folding line.
  • the first region has a planar shape.
  • a touch sensor layer forming step of forming a touch sensor layer on a base layer and a first region along one direction on the touch sensor layer using a halftone mask are performed.
  • the protective layer in the method for manufacturing a foldable touch sensor according to the present invention, in the forming of the protective layer, the protective layer may be formed to have a thickness of 0.5 ⁇ m or more and 10 ⁇ m or less.
  • the minimum thickness of the first region is formed to be 0.5 ⁇ m or more and 1.5 ⁇ m or less.
  • the thickness of the second region may be formed to be 1.5 ⁇ m or more and 10 ⁇ m or less.
  • the first region is formed to have an inclined surface shape that becomes thinner as the first region approaches the folding line.
  • the first region is formed to have a curved shape that becomes thinner as the first region approaches the folding line.
  • the first region in the forming of the protective layer, may be formed to have a planar shape.
  • FIG. 1 is a view schematically showing the overall planar shape of a foldable touch sensor according to an embodiment of the present invention
  • FIG. 2 is an enlarged view of a region A shown in FIG. 1,
  • 3A is a cross-sectional view of a foldable touch sensor according to an embodiment of the present invention.
  • 3B and 3C are cross-sectional views of a foldable touch sensor according to modified embodiments of an embodiment of the present invention.
  • FIG. 4 is a flowchart illustrating a method of manufacturing a foldable touch sensor according to an exemplary embodiment of the present invention.
  • 5 to 9C are cross-sectional views illustrating a method of manufacturing a foldable touch sensor according to an exemplary embodiment.
  • first or second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another, for example without departing from the scope of the rights according to the inventive concept, and the first component may be called a second component and similarly the second component. The component may also be referred to as the first component.
  • FIG. 1 is a view schematically showing an overall planar shape of a foldable touch sensor according to an exemplary embodiment.
  • a foldable touch sensor may be divided into a display area and a non-display area based on whether visual information is displayed.
  • the non-display area is represented to be larger than the actual one in order to improve visibility of the components included in the non-display area.
  • the display area is an area where an image provided by a device coupled to the touch sensor is displayed, and an area for capacitively detecting touch signals input from a user.
  • the display area includes a plurality of sensing areas formed in directions crossing each other. Components comprising patterns are formed.
  • electrode pads electrically connected to the sensing patterns, sense lines electrically connected to the electrode pads, and bonding pads electrically connected to the sensing lines are formed.
  • the bonding pad is connected to a flexible printed circuit (FPC) that transmits a touch signal sensed in the display area to a driver (not shown).
  • FPC flexible printed circuit
  • FIG. 2 is an enlarged view of a region A shown in FIG. 1.
  • the touch sensor layer 40 constituting the foldable touch sensor according to the exemplary embodiment of the present invention is disclosed, and the touch sensor layer 40 includes the first sensing patterns 41. ), Second sensing patterns 42, an insulating layer 45, and connection patterns 47.
  • the first sensing patterns 41 are formed along the first direction while being electrically connected to each other, and the second sensing patterns 42 are formed along the second direction while being electrically separated from each other.
  • the two directions are directions crossing with the first direction.
  • the first direction is the X direction
  • the second direction may be the Y direction.
  • the insulating layer 45 is formed between the first sensing patterns 41 and the second sensing patterns 42, and electrically insulates the first sensing patterns 41 and the second sensing patterns 42. Let's do it.
  • the connection patterns 47 electrically connect adjacent second sensing patterns 42.
  • 3A is a cross-sectional view of a foldable touch sensor according to an exemplary embodiment.
  • a foldable touch sensor includes a base layer 80, a touch sensor layer 40, and a protective layer 51.
  • the base layer 10 is a substrate on which the components of the touch sensor are formed, and may be a transparent material having a hard or soft material.
  • the base layer 10 may be a transparent optical 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 resin
  • thermosetting resin or ultraviolet curable resin such as (meth) acrylic-type, urethane type, acrylurethane type, epoxy type, and silicone type
  • the thickness of such a transparent optical film can be suitably determined, generally, it can be determined to 1-500 micrometers in consideration of workability, thinness, etc., such as intensity
  • Such a transparent optical film may contain an appropriate one or more additives.
  • 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 optical 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, and various functional layers may be formed depending on the purpose. It may include.
  • the transparent optical film may be surface-treated as needed.
  • Such surface treatments include, for example, plasma treatments, corona treatments, dry treatments such as primer treatments, and chemical treatments such as alkali treatments including saponification treatments.
  • the transparent optical film may be an isotropic film, a retardation film or a protective film.
  • Retardation film is a film produced by the method of uniaxial stretching, biaxial stretching, polymer coating, liquid crystal coating of a polymer film, and is generally used for improving and controlling optical properties such as viewing angle compensation, color improvement, light leakage, and color taste control of a display. do.
  • Types of the retardation film include 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 touch sensor surface and improving processability.
  • a polarizing plate As a polarizing plate, a well-known thing used for a display panel can be used. Specifically, a polyvinyl alcohol film is drawn to form a protective layer on at least one surface of a polarizer dyed iodine or a dichroic dye, made by orienting the liquid crystal to have the performance of the polarizer, polyvinyl film on a transparent film And coating the alignment resin such as alcohol, stretching and dyeing the same, and the like, but are not limited thereto.
  • a polarizer dyed iodine or a dichroic dye made by orienting the liquid crystal to have the performance of the polarizer, polyvinyl film on a transparent film
  • the alignment resin such as alcohol, stretching and dyeing the same, and the like, but are not limited thereto.
  • the touch sensor layer 40 is formed on the base layer 10 and is a component for detecting a touch signal input by a user.
  • the sensing patterns constituting the touch sensor layer 40 may be formed in an appropriate shape according to the requirements of the electronic device to which the touch sensor layer 40 is applied. For example, when applied to a touch screen panel, the sensing pattern and the y coordinate may be detected. It may be formed of two types of patterns to detect, but is not limited thereto.
  • the touch sensor layer 40 may include first sensing patterns 41, second sensing patterns 42, insulating layer 45, and connection patterns 47.
  • the first sensing patterns 41 are formed along the first direction while being electrically connected to each other, and the second sensing patterns 42 are formed along the second direction while being electrically separated from each other.
  • the two directions are directions crossing with the first direction.
  • the first direction is the X direction
  • the second direction may be the Y direction.
  • the insulating layer 45 is formed between the first sensing patterns 41 and the second sensing patterns 42, and electrically insulates the first sensing patterns 41 and the second sensing patterns 42. Let's do it.
  • connection patterns 47 electrically connect adjacent second sensing patterns 42.
  • the first sensing patterns 41, the second sensing patterns 42, and the connection patterns 47 may be used without limitation as long as it is a transparent conductive material.
  • indium tin oxide (ITO) and indium zinc oxide may be used.
  • IZO indium zinc tin oxide
  • IZTO aluminum zinc oxide
  • AZO aluminum zinc oxide
  • GZO gallium zinc oxide
  • florin tin oxide (FTO) indium tin oxide-silver-indium tin oxide
  • ITO-Ag-ITO Indium zinc oxide-silver-indium zinc oxide
  • IZO-Ag-IZO Indium zinc oxide-silver-indium zinc oxide
  • IZTO-Ag-IZTO indium zinc tin oxide-silver-indium zinc tin oxide
  • AZO-Ag- AZO aluminum zinc oxide-silver-aluminum zinc oxide
  • metal oxides selected from the group consisting of; Metals selected from the group consisting of gold (Au), silver
  • the thickness of the touch sensor layer 40 is not particularly limited, but in consideration of flexibility of the touch sensor, the thickness of the touch sensor layer 40 is preferably as thin as possible.
  • the thickness of the touch sensor layer 40 may be 0.01 to 5 ⁇ m, preferably 0.03 to 0.5 ⁇ m.
  • the first sensing patterns 41 and the second sensing patterns 42 constituting the touch sensor layer 40 may be trigonal, pentagonal, pentagonal, hexagonal, or more than seven polygons independently of each other. It may be a pattern.
  • the touch sensor layer 40 may include a rule pattern.
  • a regular pattern means that the pattern form has regularity.
  • the sensing patterns may include, independently of each other, a mesh shape such as a rectangle or a square, or a pattern shape such as a hexagon.
  • the touch sensor layer 40 may include an irregular pattern.
  • Irregular pattern means that the shape of the pattern does not have regularity.
  • the sensing patterns constituting the touch sensor layer 40 are formed of a material such as metal nanowires, carbon-based materials, polymer materials, or the like, the sensing patterns may have a network structure.
  • the sensing patterns may have a network structure, signals are sequentially transmitted to adjacent patterns in contact with each other, thereby realizing a pattern having high sensitivity.
  • the sensing patterns constituting the touch sensor layer 40 may be formed of a single layer or a plurality of layers.
  • an insulating material known in the art may be used without limitation, for example, silicon oxide, A photosensitive resin composition or a thermosetting resin composition containing a metal oxide or an acrylic resin can be used.
  • the insulating layer 45 may be formed using an inorganic material such as silicon oxide (SiOx), and in this case, the insulating layer 45 may be formed by deposition, sputtering, or the like.
  • the protective layer 51 is formed on the touch sensor layer 40 and includes a first region formed along one direction and a second region that is thicker than the first region and excludes the first region.
  • the protective layer 51 is formed of an insulating material and includes the first sensing patterns 41, the second sensing patterns 42, the insulating layer 45, and the connection patterns 47 constituting the touch sensor layer 40. ) Is formed to cover, to insulate and protect the touch sensor layer 40 from the outside.
  • the protective layer 51 may be formed of a single layer or a plurality of layers of two or more layers.
  • one direction which is a direction in which the first region is formed, may be a first direction in which the first sensing patterns 41 are formed or a second direction in which the second sensing patterns 42 are formed.
  • it is not necessarily limited thereto.
  • the first area formed along one direction becomes a folding line which is a line where the touch sensor is folded when the user folds the touch sensor.
  • the thickness of the protective layer 51 is not reduced as a whole to reduce the foldable characteristics of the touch sensor, only the thickness A of the first region serving as the folding line is reduced to a predetermined level. While meeting the durability requirements of the sensor, it is possible to ensure foldable characteristics.
  • the thickness of the protective layer 51 is preferably 0.5 ⁇ m or more and 10 ⁇ m or less.
  • the thickness of the protective layer 51 is less than 0.5 ⁇ m, the durability of the protective layer 51 is weakened, so that elements constituting the touch sensor layer 40 cannot be sufficiently protected from external factors such as impact, and the like.
  • the thickness of 51 exceeds 10 micrometers, the foldable characteristic of a touch sensor will fall, the uniformity of the protective layer 51 will fall largely, and the performance quality of a touch sensor will fall.
  • region is 0.5 micrometer or more and 1.5 micrometers or less. Since the first area is an area excluding the second area from the entire area of the protective layer 51, when the user folds the touch sensor, the first area becomes an folding line which is a folding line of the touch sensor. Compared to the thinner configuration. When the thickness A of the first region is less than 0.5 ⁇ m, durability of the first region of the protective layer 51, that is, the folding line, is weakened, so that elements constituting the touch sensor layer 40 may not be sufficiently protected.
  • the thickness A of the first region is less than 0.5 ⁇ m
  • cracks may be formed in the elements constituting the first region and the touch sensor layer 40 thereunder. cracks) and the durability of the touch sensor is degraded.
  • region exceeds 1.5 micrometers, the foldable characteristic in a 1st area
  • region is 1.5 micrometers or more and 10 micrometers or less.
  • the thickness B of the second region is less than 1.5 ⁇ m, the durability of the second region of the protective layer 51 is weakened to sufficiently protect the elements constituting the touch sensor layer 40 from external factors such as impact. If the thickness B of the second region exceeds 10 ⁇ m, the foldable property of the touch sensor is lowered, the uniformity of the protective layer 51 is greatly lowered, and the performance quality of the touch sensor is lowered.
  • the thickness A of the first area which is a folding line, which is a line where the touch sensor is folded, is made thinner than the thickness B of the second area.
  • the foldable characteristics can be further improved while maintaining the durability of the touch sensor.
  • Examples of the specific shape of the first region are as follows.
  • the first region may have an inclined surface shape in which the thickness becomes thinner as it approaches the folding line.
  • the first region may have a curved shape in which the thickness becomes thinner as it approaches the folding line.
  • the first region may have a planar shape.
  • 3A, 3B, and 3C only disclose examples of the shape of the first region of the protective layers 51, 52, 53, in addition to these examples the first region may be characterized by the durability of the protective layers 51, 52, 53. It may have various shapes to secure the foldable characteristics.
  • an insulating material known in the art may be used without limitation, and for example, an excellent material in transparency, flexibility, mechanical strength, thermal stability, moisture shielding, and isotropy may be used. Can be.
  • an organic insulating film may be applied as the material of the protective layers 51, 52, and 53, and may be formed of a curable composition including a polyol and a melamine curing agent. It doesn't happen.
  • polyol examples include, but are not limited to, polyether glycol derivatives, polyester glycol derivatives, polycaprolactone glycol derivatives, and the like.
  • 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.
  • the protective layers 51, 52, and 53 may be formed of an organic-inorganic hybrid curable composition, and when using an organic compound and an inorganic compound at the same time, cracks generated during peeling may be reduced. desirable.
  • 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.
  • FIGS. 5 to 9A are cross-sectional views illustrating a method of manufacturing a foldable touch sensor according to an embodiment of the present invention.
  • the method of manufacturing a foldable touch sensor includes a touch sensor layer forming step S10 and a protective layer forming step S20.
  • a process of forming the touch sensor layer 40 on the base layer 10 is performed.
  • the touch sensor layer 40 is a component for detecting a touch signal input by a user.
  • the sensing patterns constituting the touch sensor layer 40 may be formed in an appropriate shape according to a request of an applied electronic device, and for example, when applied to a touch screen panel, a pattern for sensing x coordinates. And it may be formed of two kinds of patterns of the pattern for detecting the y coordinate, but is not limited thereto.
  • the first sensing patterns 41 connected to each other along the first direction and the second sensing patterns 42 separated from each other along the second direction crossing the first direction are formed.
  • the process is carried out.
  • the first direction is the X direction
  • the second direction may be the Y direction.
  • the insulating layer 45 electrically insulates the first sensing patterns 41 and the second sensing patterns 42.
  • connection patterns 47 for electrically connecting adjacent second sensing patterns 42 is performed.
  • the first sensing patterns 41, the second sensing patterns 42, and the connection patterns 47 may be used without limitation as long as it is a transparent conductive material.
  • indium tin oxide (ITO) and indium zinc oxide may be used.
  • IZO indium zinc tin oxide
  • IZTO aluminum zinc oxide
  • AZO aluminum zinc oxide
  • GZO gallium zinc oxide
  • florin tin oxide (FTO) indium tin oxide-silver-indium tin oxide
  • ITO-Ag-ITO Indium zinc oxide-silver-indium zinc oxide
  • IZO-Ag-IZO Indium zinc oxide-silver-indium zinc oxide
  • IZTO-Ag-IZTO indium zinc tin oxide-silver-indium zinc tin oxide
  • AZO-Ag- AZO aluminum zinc oxide-silver-aluminum zinc oxide
  • metal oxides selected from the group consisting of; Metals selected from the group consisting of gold (Au), silver
  • the thickness of the touch sensor layer 40 is not particularly limited, but in consideration of flexibility of the touch sensor, the thickness of the touch sensor layer 40 is preferably as thin as possible.
  • the thickness of the touch sensor layer 40 may be 0.01 to 5 ⁇ m, preferably 0.03 to 0.5 ⁇ m.
  • the first sensing patterns 41 and the second sensing patterns 42 constituting the touch sensor layer 40 may be trigonal, pentagonal, pentagonal, hexagonal, or more than seven polygons independently of each other. It may be a pattern.
  • the touch sensor layer 40 may include a rule pattern.
  • a regular pattern means that the pattern form has regularity.
  • the sensing patterns may include, independently of each other, a mesh shape such as a rectangle or a square, or a pattern shape such as a hexagon.
  • the touch sensor layer 40 may include an irregular pattern.
  • Irregular pattern means that the shape of the pattern does not have regularity.
  • the sensing patterns constituting the touch sensor layer 40 are formed of a material such as metal nanowires, carbon-based materials, polymer materials, or the like, the sensing patterns may have a network structure.
  • the sensing patterns may have a network structure, signals are sequentially transmitted to adjacent patterns in contact with each other, thereby realizing a pattern having high sensitivity.
  • the sensing patterns constituting the touch sensor layer 40 may be formed of a single layer or a plurality of layers.
  • an insulating material known in the art may be used without limitation, for example, silicon oxide, A photosensitive resin composition or a thermosetting resin composition containing a metal oxide or an acrylic resin can be used.
  • the insulating layer 45 may be formed using an inorganic material such as silicon oxide (SiOx), and in this case, the insulating layer 45 may be formed by deposition, sputtering, or the like.
  • 9A, 9B, and 9C are diagrams for describing the protective layer forming step S20.
  • a protective layer forming material layer 50 is formed on the entire surface of the touch sensor layer 40, and a halftone mask M is formed on the protective layer forming material layer 50.
  • a process of differentially exposing and developing the protective layer forming material layer 50 using the halftone mask M is performed.
  • the halftone mask M has a light transmittance pattern corresponding to the shape of the target pattern. That is, when the light emitted from the exposure machine reaches the halftone mask M, the light reaching the halftone mask M corresponds to the light transmittance pattern of the halftone mask M. Since the light passes through the protective layer forming material layer 50, the protective layer forming material layer 50 is exposed in correspondence with the light transmittance pattern of the halftone mask M.
  • the protective layer forming material layer 50 may be formed to a thickness of 10 ⁇ m or less.
  • 9A, 9B, and 9C illustrate examples of various shapes of the protective layer that may be obtained through the protective layer forming step S20.
  • the first region may have an inclined surface shape in which the thickness becomes thinner as it approaches the folding line.
  • the first region may have a curved shape in which the thickness becomes thinner as it approaches the folding line.
  • the first region may have a planar shape.
  • 9A, 9B, and 9C only disclose examples of the shape of the first region of the protective layer.
  • the first region may have various shapes to secure durability and foldable characteristics of the protective layer. .
  • a foldable touch sensor and a method of manufacturing the same may be provided while maintaining durability and improving foldable characteristics.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
PCT/KR2016/015454 2016-02-16 2016-12-29 폴더블 터치 센서 및 그 제조방법 WO2017142188A1 (ko)

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KR10-2016-0017896 2016-02-16

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KR20230133049A (ko) * 2022-03-10 2023-09-19 동우 화인켐 주식회사 전극 접속 구조, 이의 제조 방법 및 이를 포함하는 디지타이저

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