WO2015102349A1 - Touch screen panel - Google Patents

Touch screen panel Download PDF

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Publication number
WO2015102349A1
WO2015102349A1 PCT/KR2014/012997 KR2014012997W WO2015102349A1 WO 2015102349 A1 WO2015102349 A1 WO 2015102349A1 KR 2014012997 W KR2014012997 W KR 2014012997W WO 2015102349 A1 WO2015102349 A1 WO 2015102349A1
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WO
WIPO (PCT)
Prior art keywords
pattern
touch screen
screen panel
auxiliary
unit
Prior art date
Application number
PCT/KR2014/012997
Other languages
French (fr)
Korean (ko)
Inventor
이진구
이철훈
박동필
Original Assignee
동우화인켐 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020140190265A external-priority patent/KR102194607B1/en
Application filed by 동우화인켐 주식회사 filed Critical 동우화인켐 주식회사
Priority to US15/038,182 priority Critical patent/US9880689B2/en
Priority to CN201480070319.XA priority patent/CN105830004B/en
Publication of WO2015102349A1 publication Critical patent/WO2015102349A1/en

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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
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • 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
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

Definitions

  • the present invention relates to a touch screen panel.
  • the touch screen panel is a screen panel equipped with a special input device to receive the position when touched by hand.
  • the touch screen panel receives input data directly from the screen so that when a person's hand or an object touches a character or a specific location displayed on the screen without using a keyboard, the touch screen panel can identify the location and perform specific processing by the stored software. It is made possible by being laminated
  • a transparent touch sensing electrode In order to recognize the touched portion without degrading the visibility of the image displayed on the screen, the use of a transparent touch sensing electrode is essential, and typically, a sensing pattern formed in a predetermined pattern is used.
  • the sensing pattern may be generally formed of a first pattern and a second pattern.
  • the first pattern and the second pattern are disposed in different directions to provide information about the X and Y coordinates of the touched point.
  • a change in capacitance according to the contact position is transmitted to the driving circuit side via the first pattern, the second pattern, and the position detection line.
  • the contact position is grasped by the change of the capacitance by the X and Y input processing circuit and the like converted into an electrical signal.
  • capacitive touch panels use indium tin oxide (ITO) or conductive polymers as transparent touch sensing electrodes.
  • ITO indium tin oxide
  • conductive polymers conductive polymers
  • an electrode made of ITO or a conductive polymer or the like has a high sheet resistance problem.
  • Korean Patent Publication No. 2013-0078065 discloses a touch panel.
  • Patent Document 1 Korean Patent Publication No. 2013-0078065
  • An object of the present invention is to provide a touch screen panel with a significantly lower resistance of a sensing electrode, thereby improving touch sensitivity.
  • an object of this invention is to provide the touch screen panel with few fall of a transmittance
  • the touch sensing electrode may include a sensing pattern having a first pattern formed in a first direction and a second pattern formed in a second direction;
  • At least one auxiliary pattern provided above or below at least one of the first pattern and the second pattern.
  • the pixel unit includes a plurality of unit pixels
  • P1 is 0.01 to 40 ⁇ m in the width of the auxiliary pattern
  • P2 is 0.005 to 20 ⁇ m in the thickness of the auxiliary pattern
  • P3 is 5 to 500 ⁇ m as the length of the auxiliary pattern in the upper region of the unit pixel
  • A is The length of the unit pixel).
  • P1 is 1 to 10 ⁇ m
  • P2 is 0.1 to 1.5 ⁇ m
  • P3 is 10 to 300 ⁇ m
  • A is 20 to 400 ⁇ m
  • touch screen panel
  • the second auxiliary pattern provided in the second pattern is formed in a second direction, the touch screen panel.
  • the touch screen panel In the above 1, wherein the first and second auxiliary pattern is formed of the same material as the bridge electrode, the touch screen panel.
  • the touch screen panel 14. In the above 1, wherein the unit pattern of the first pattern and the second pattern has a sheet resistance of 50 ⁇ 500 ⁇ / ⁇ , the touch screen panel.
  • first and second auxiliary patterns further include one or more separate additional auxiliary patterns independently of each other.
  • the touch screen panel of claim 12 wherein the first auxiliary pattern is separated into two or more unit patterns on the upper or lower unit pattern of the first pattern, two of which are disposed to be biased toward the bridge electrode.
  • the line width of the unit bridge electrode is 1 to 30 ⁇ m, touch screen panel.
  • the touch screen panel of 1, wherein the bridge electrode is made of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium, or an alloy thereof.
  • An image display device comprising the touch screen panel of any one of claims 1 to 22 above.
  • the touch screen panel of the present invention has a remarkably low resistance of the sensing electrode, which is excellent in touch sensitivity and excellent in transmittance.
  • FIG. 1 is a plan view of a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 2 is a vertical cross-sectional view of a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 3 is a vertical cross-sectional view of the touch sensing electrode according to the embodiment of the present invention.
  • FIG. 4 is a plan view of a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 5 is a vertical cross-sectional view of a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 6 is a vertical cross-sectional view of a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 7 is a plan view of a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 8 is a plan view illustrating a unit pattern of a first pattern in a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 9 is a plan view illustrating a unit pattern of a first pattern in a touch sensing electrode according to an embodiment of the present invention.
  • FIG. 10 is a schematic plan view illustrating a first pattern, a first auxiliary pattern, an additional auxiliary pattern, and a unit pixel in a touch screen panel according to an embodiment of the present invention.
  • FIG. 11 is a plan view illustrating a line width and a length of a unit pixel of an auxiliary pattern in a touch screen panel according to an exemplary embodiment of the present invention.
  • 12 and 13 are graphs showing the resistance and transmittance according to the Y values of the manufacturing groups, respectively.
  • the present invention includes a touch sensing electrode and a pixel unit disposed below the touch sensing electrode, the touch sensing electrode comprising: a sensing pattern having a first pattern formed in a first direction and a second pattern formed in a second direction; A bridge electrode electrically connecting the spaced unit patterns of the second pattern; And an auxiliary pattern disposed above or below at least one of the first pattern and the second pattern, wherein the pixel unit includes a plurality of unit pixels, and the auxiliary pattern satisfies Equation 1, respectively.
  • the resistance of the electrode is significantly low, and relates to a touch screen panel having excellent touch sensitivity and excellent transmittance.
  • the touch screen panel of the present invention includes a pixel portion 90 which is commonly used in the art.
  • the pixel unit 90 is a portion capable of implementing red, green, and blue colors, and the structure and position of the pixel unit 90 are not particularly limited, and include a structure that is commonly used in the art and is commonly formed. It may be formed at a position, and specifically, may be positioned below the touch sensing electrode (opposite to the viewing side with respect to the touch sensing electrode) based on the viewer side.
  • the pixel unit 90 includes a plurality of unit pixels 80.
  • the unit pixel 80 may include subpixels of R, G, and B colors.
  • the length A of the unit pixel 80 means the length of the unit pixel 80 in a direction crossing the subpixels of R, G, and B colors.
  • the length of the unit pixel 80 is not particularly limited as long as it is within a range satisfying the range of Equation 1 to be described later.
  • the unit pixel 80 may be 20 to 500 ⁇ m, preferably 20 to 400 ⁇ m, but is not limited thereto. It is not a matter of course and may vary depending on the image display apparatus used.
  • the sensing pattern may include a first pattern 10 formed in a first direction and a second pattern 20 formed in a second direction.
  • the first pattern 10 and the second pattern 20 are disposed in different directions.
  • the first direction may be an X-axis direction
  • the second direction may be a Y-axis direction intersecting with the second direction, but is not limited thereto.
  • the first pattern 10 and the second pattern 20 provide information about the X coordinate and the Y coordinate of the touched point. Specifically, when a human hand or an object contacts the cover window substrate, a change in capacitance according to the contact position is transmitted to the driving circuit via the first pattern 10, the second pattern 20, and the position detection line. do. Then, the contact position is grasped by the change of the capacitance converted into an electrical signal by the X and Y input processing circuit (not shown) or the like.
  • the first pattern 10 and the second pattern 20 are formed on the same layer, and the respective patterns must be electrically connected to detect a touched point.
  • the unit patterns of the first pattern 10 are connected to each other through the joints, the unit patterns of the second pattern 20 are separated from each other in an island form to electrically connect the second pattern 20.
  • a separate bridge electrode 30 is required. The bridge electrode 30 will be described later.
  • the thickness of the sensing pattern is not particularly limited and may be, for example, 10 to 200 nm. When the thickness of the sensing pattern is less than 10 nm, the electrical resistance may increase, and thus the touch sensitivity may be lowered.
  • the sensing pattern may be applied without limitation to the transparent electrode material known in the art.
  • indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc oxide (IZTO), cadmium tin oxide (CTO), PEDOT (poly (3,4-ethylenedioxythiophene)) , Carbon nanotubes (CNT), graphene (grapheme), metal wires and the like these may be used alone or in combination of two or more.
  • ITO indium tin oxide
  • the metal used for a metal wire is not specifically limited, For example, silver (Ag), gold, aluminum, copper, iron, nickel, titanium, telenium, chromium, etc. are mentioned. These can be used individually or in mixture of 2 or more types.
  • the sensing pattern may have a sheet resistance of 50 to 500 ⁇ / ⁇ of the unit pattern. If the sheet resistance is less than 50 ⁇ / ⁇ , the transmittance may be low and the resolution may be reduced. If the sheet resistance is 500 ⁇ / ⁇ or more, the touch sensitivity may be reduced.
  • the method for adjusting the sheet resistance of the sensing pattern is not particularly limited, and may be based on methods known in the art, for example, changing materials, further mixing other materials, or thickening the pattern. It can be by.
  • the bridge electrode 30 electrically connects the unit patterns spaced apart from the second pattern 20.
  • the bridge electrode 30 may be formed above or below the second pattern 20.
  • the bridge electrode 30 according to the present invention is formed of a metal material, and preferably formed of the same material as the metal wiring and the position detection line. In such a case, the bridge electrodes 30 may be formed together in forming the metal lines and the position detection lines, thereby simplifying the process.
  • the metal is not particularly limited as long as it has excellent electrical conductivity and low resistance, and examples thereof include molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, and titanium. These can be used individually or in mixture of 2 or more types.
  • the line width of the unit bridge electrode 30 is not particularly limited, and may be, for example, 1 to 30 ⁇ m, preferably 1 to 20 ⁇ m, but is not limited thereto. If the line width of the bridge is less than 1 ⁇ m, the resistance may be excessively high, and if it is more than 30 ⁇ m, the pattern may be viewed.
  • the thickness of the bridge electrode 30 is not particularly limited, and may be, for example, 0.05 to 1.5 ⁇ m, preferably 0.1 to 1 ⁇ m, but is not limited thereto. If the thickness of the bridge is less than 0.05 ⁇ m the resistance is not low enough may lower the touch sensitivity, if it is more than 1.5 ⁇ m may cause thickness non-uniformity in subsequent processes.
  • the bridge electrode 30 may have a form in which two or more metals are stacked in two or more layers.
  • two or more metals may be formed in a multilayer structure such as two layers or three layers.
  • three layers of molybdenum / aluminum / molybdenum may be mentioned. It doesn't happen.
  • the touch sensing electrode according to the present invention includes at least one auxiliary pattern disposed above or below at least one of the first pattern and the second pattern.
  • the auxiliary pattern can be formed to lower the resistance, but the excessively large auxiliary pattern reduces the transmittance.
  • the first and second auxiliary patterns 40 and 50 satisfy the following Equation 1, thereby significantly reducing the resistance of the sensing pattern without significantly reducing the transmittance, thereby solving the above problem.
  • P1 is 0.01 to 40 ⁇ m in the width of the auxiliary pattern
  • P2 is 0.005 to 20 ⁇ m in the thickness of the auxiliary pattern
  • P3 is 5 to 500 ⁇ m as the length of the auxiliary pattern in the upper region of the unit pixel
  • A is The length of the unit pixel).
  • FIG. 10 illustrates a schematic arrangement of the touch sensing pattern (first pattern 10), the first auxiliary pattern 40, and the unit pixel 80
  • FIG. 11 shows the line width P1 of the auxiliary pattern and the length of the unit pixel. The definition of A is shown.
  • two or more auxiliary patterns may be formed on one unit pixel 80 area, and in this case, P3 is a value obtained by adding the length of each auxiliary pattern.
  • the line widths P1 of the first and second auxiliary patterns 40 and 50 may be 1 to 30 ⁇ m, and preferably 1 to 10 ⁇ m. If the line width of the auxiliary pattern is less than 1 ⁇ m, the resistance may be excessively high, and if the line width is more than 30 ⁇ m, the pattern may be visually recognized.
  • the thickness P2 of the first and second auxiliary patterns 40 may be 0.05 to 1.5 ⁇ m, and preferably 0.1 to 1.5 ⁇ m. When the thickness of the auxiliary pattern is less than 0.05 ⁇ m, the resistance may not be low enough, so the touch sensitivity may be lowered.
  • the length P3 of the first and second auxiliary patterns 40 and 50 may be 5 to 400 ⁇ m, and preferably 10 to 300 ⁇ m. If the length of the auxiliary pattern is less than 5 ⁇ m the effect of the resistance reduction may be insignificant, if it is more than 400 ⁇ m the transmittance may be lowered.
  • the spacing between the auxiliary patterns on each unit pixel 80 may be the same.
  • the intervals between the auxiliary patterns may have the same interval.
  • the line width P1 of the first and second auxiliary patterns 40 and 50 is 1 to 10 ⁇ m, and the thickness P2 of the first and second auxiliary patterns 40 and 50 is 0.1 to 1.5.
  • the length P3 of the first and second auxiliary patterns 40 and 50 is 10 to 300 ⁇ m, and the length A of the unit pixel 80 may be 20 to 400 ⁇ m, and excellent transmittance and remarkably in the above range. It can have a low resistance.
  • the length P3 of the auxiliary patterns 40 and 50 may be equal to or larger than A of the unit pixel 80, and in this case, may have excellent transmittance and significantly low resistance.
  • the direction of the first and second auxiliary patterns 40 and 50 is not particularly limited.
  • the first auxiliary pattern 40 is formed in the first direction and the second auxiliary pattern 50 is formed in the second direction.
  • the first pattern 10 is connected in the first direction to transmit the sensing signal
  • the second pattern 20 is connected in the second direction by the bridge electrode 30 to transmit the sensing signal.
  • the first auxiliary pattern 40 may be formed to pass through the center of gravity of the unit pattern of the first pattern 10 and the second auxiliary pattern 40.
  • the extension line may be formed such that the extension line passes the unit bridge electrode center of gravity.
  • FIGS. 1 and 2 and 3 are each an implementation of the present invention.
  • the first and second auxiliary patterns 40 and 50 may be formed on the sensing pattern.
  • the bridge electrode 30 and the second auxiliary pattern 50 may be separated from each other, or may be connected as shown in FIG. 3.
  • the first auxiliary patterns 40 and 50 are formed on the sensing pattern, the first auxiliary patterns 40 are formed to be separated from the bridge electrodes 30 and cross the bridge electrodes 30. It may be selectively formed on the joint between the unit patterns of the first pattern 10.
  • FIGS. 4 and 5 are respective implementations of the present invention.
  • the first and second auxiliary patterns 40 and 50 may be formed under the sensing pattern.
  • the bridge electrode 30 and the second auxiliary pattern 50 may be separated from each other, or may be connected as shown in FIG. 6.
  • first auxiliary pattern 40 may be separated into two or more unit patterns on the upper or lower part of the unit pattern of the first pattern 10, and two of them may be positioned to be biased toward the bridge electrode 30. .
  • the second auxiliary pattern 50 may be separated into two or more unit patterns on the upper or lower part of the unit pattern of the second pattern 20, two of which may be positioned to be biased toward the bridge electrode 30. .
  • the first pattern 10 and the second pattern 20 cross each other with an insulator interposed by a bridge electrode 30 that electrically connects the second pattern 20 in the second direction. Since the resistance of the sensing pattern is increased, the resistance reduction effect can be maximized when formed as described above.
  • FIG. 7 is a plan view of a touch sensing electrode according to an embodiment of the present invention, in which the first and second sensing patterns 40 and 50 are formed below the first and second patterns 10 and 20.
  • a structure in which the first auxiliary pattern 40 under the unit pattern of the first pattern 10 is separated into two unit patterns so that the separated unit patterns are biased to the bridge electrode 30 is illustrated.
  • first and second auxiliary patterns 40 and 50 may further include one or more additional auxiliary patterns 70 separated from each other.
  • the additional auxiliary pattern 70 means a pattern other than the pattern formed in the first direction in the first auxiliary pattern 40 and a pattern other than the pattern formed in the second direction in the second auxiliary pattern 50.
  • FIGS. 8 and 9 illustrate a case in which the first auxiliary pattern 40 further includes an additional auxiliary pattern 70 in a second direction in addition to the pattern formed in the first direction in the structure of FIG. 7.
  • An additional auxiliary pattern 70 may be further provided, and only the case in which the additional auxiliary pattern 70 is further included in FIGS. 8 and 9 is formed in the second direction. It is not limited.
  • the additional auxiliary pattern 70 may be formed in various shapes and directions.
  • circular; Elliptical; It may have various shapes such as a polygon such as a triangle, a quadrangle, a pentagon, and the like, but is not limited thereto.
  • first auxiliary pattern 40 may be formed in the first direction except for a portion where the bridge electrode 30 is formed so as not to contact the bridge electrode 30, and the second auxiliary pattern 50 may be a bridge electrode. It may be formed in connection with the (30).
  • the first and second auxiliary patterns 40 and 50 may be formed of metals exemplified as the material of the bridge electrode 30, and preferably, may be formed of the same material as the bridge electrode 30. In such a case, the first and second auxiliary patterns 40 and 50 may be formed together at the time of forming the bridge electrode 30, so that the process efficiency may be significantly improved.
  • the insulator 60 is formed between the first pattern 10 and the bridge electrode 30 to prevent electrical connection between the first pattern 10 and the bridge electrode 30.
  • the insulator may be formed in the form of a pattern only on the local region between the first pattern 10 and the bridge electrode 30, specifically, on the joint portion of the unit pattern of the first pattern 10.
  • the insulator 60 according to the present invention may be applied without limitation to a transparent insulating material known in the art.
  • it may be formed in a required pattern using a transparent photosensitive resin composition or a thermosetting resin composition containing a metal oxide such as silicon oxide or an acrylic resin.
  • the touch sensing electrode of the present invention is formed on the substrate 1.
  • the substrate 1 may be any material commonly used in the art without limitation, for example, glass, polyethersulphone (PES), polyacrylate (PAR, polyacrylate), polyether imide (PEI, polyetherimide, polyethylene naphthalate (PEN, polyethyelenen napthalate), polyethylene terephthalate (PET, polyethyelene terepthalate), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate ( PC, polycarbonate), cellulose tri acetate (TAC), cellulose acetate propionate (CAP), and the like.
  • PES polyethersulphone
  • PAR polyacrylate
  • PEI polyether imide
  • PEN polyethylene naphthalate
  • PET polyethyelene terepthalate
  • PPS polyphenylene sulfide
  • PC polycarbonate
  • TAC cellulose tri acetate
  • CAP cellulose acetate propionate
  • the substrate may be a cover window substrate or a display panel forming the outermost surface of the touch screen panel.
  • the present invention provides a method of manufacturing the touch sensing electrode.
  • a first pattern formed by connecting a unit pattern to a joint part in a first direction and a unit pattern are separated from the joint part to form a sensing pattern including a second pattern formed in a second direction.
  • the first pattern 10 and the second pattern 20 are disposed in different directions.
  • the first direction may be an X-axis direction
  • the second direction may be a Y-axis direction intersecting with the second direction, but is not limited thereto.
  • the first pattern 10 and the second pattern 20 are formed on the same layer, the unit pattern of the first pattern 10 is connected to each other through the joint portion, the unit pattern of the second pattern 20 is island ) To form a structure separated from each other.
  • the sensing pattern may be formed by various thin film deposition techniques such as physical vapor deposition (PVD) and chemical vapor deposition (CVD). For example, it may be formed by reactive sputtering, which is an example of physical vapor deposition.
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • the sensing pattern may be formed by a printing process.
  • various printing methods such as gravure off set, reverse off set, inkjet printing, screen printing, and gravure printing may be used.
  • the sensing pattern when the sensing pattern is formed by a printing process, the sensing pattern may be formed of a printable paste material.
  • it may be formed of carbon nanotubes (CNTs), conductive polymers, and silver nano wire inks.
  • it may be formed by photolithography.
  • the sensing pattern may be appropriately selected and formed within the aforementioned materials and thickness ranges.
  • an insulator 60 is formed on the joint of the unit pattern of the first pattern 10.
  • the insulator 60 serves to electrically insulate the bridge electrode 30 and the first pattern 10 to be described later.
  • the insulator 60 may be formed of a material within the above range.
  • a bridge electrode 30 is formed on the insulator 60 to electrically connect the unit pattern of the second pattern 20.
  • the bridge electrode 30 may be formed within the above-described line width, thickness and material range.
  • a first auxiliary pattern 40 and a second auxiliary pattern 50 are formed on the second pattern 20 on the first pattern 10.
  • the direction of the first and second auxiliary patterns 40 and 50 is not particularly limited.
  • the first auxiliary pattern 40 is formed in the first direction and the second auxiliary pattern 50 is formed in the second direction. Can be.
  • the first auxiliary pattern 40 is preferably formed in the second direction in terms of reducing resistance and improving touch sensitivity. More preferably, the first auxiliary pattern 40 is formed in the first pattern 10.
  • the second auxiliary pattern 40 may be formed such that its extension line passes the center of gravity of the unit bridge electrode.
  • the first and second auxiliary patterns 40 and 50 may be formed within the above-described line width, thickness, length, and material range, and preferably, may be formed of the same material as the bridge electrode 30. In such a case, separate equipment and processes are not required for the formation of the bridge electrode 30 and the auxiliary pattern 40, and they can be simultaneously formed in the same equipment in the same process, and the process efficiency is significantly improved.
  • first auxiliary pattern 40 may be separated into two or more unit patterns on the upper or lower unit pattern of the first pattern 10, and two of them may be formed to be biased toward the bridge electrode 30. .
  • the second auxiliary pattern 50 may be separated into two or more unit patterns on the upper or lower unit pattern of the second pattern 20, two of which may be formed to be biased toward the bridge electrode 30. .
  • the first pattern 10 and the second pattern 20 cross each other with an insulator interposed by a bridge electrode 30 that electrically connects the second pattern 20 in the second direction. Since the resistance of the sensing pattern is increased, the resistance reduction effect can be maximized when formed as described above.
  • the second auxiliary pattern 50 may be formed to be spaced apart from the bridge electrode 30, or may be connected to the bridge electrode 30 on the same line.
  • the method of forming the bridge electrode 30, the first and second auxiliary patterns 40 and 50, and the insulator 60 is not particularly limited, and is formed by a method within the range exemplified by the above-described sensing method. Can be.
  • the bridge electrode 30 is formed.
  • the bridge electrode 30 serves to electrically connect the unit pattern of the second pattern 20 to be described later. Since the unit pattern of the second pattern 20 to be described later is electrically connected by partially overlapping both sides of the unit bridge electrode, the predetermined interval overlaps the width of the unit pattern of the second pattern 20 and both unit bridge electrodes. It is like difference with length to become.
  • the bridge electrode 30 may be formed within the above-described line width, thickness and material range.
  • the second auxiliary pattern 50 is formed in the same second direction as the first auxiliary pattern 40 and the bridge electrode 30 in the first direction.
  • the first auxiliary pattern 40 and the second auxiliary pattern 50 are arranged in different directions.
  • the first direction may be an X-axis direction
  • the second direction may be a Y-axis direction intersecting with the second direction, but is not limited thereto.
  • the first pattern 10 is formed in a first direction. Are connected to each other to transmit a sensing signal, and the second pattern 20 is connected to the second direction by the bridge electrode 30 to transmit a sensing signal, so that the first and second auxiliary patterns 40 and 50 are respectively When formed in the direction of the resistance can be maximized to reduce the resistance and improve the touch sensitivity.
  • the first and second auxiliary patterns 40 and 50 may be formed within the above-described line width, thickness, and material range, and preferably, may be formed of the same material as the bridge electrode 30. In such a case, separate equipment and processes are not required for the formation of the bridge electrode 30 and the auxiliary pattern 40, and they can be simultaneously formed in the same equipment in the same process, and the process efficiency is significantly improved.
  • first auxiliary pattern 40 may be separated into two or more unit patterns between two adjacent bridge electrodes 30, two of which may be biased toward the bridge electrode 30.
  • 7 is a top view of a touch sensing electrode made according to one embodiment of such a method.
  • the second auxiliary pattern 50 may be separated into two or more unit patterns between two adjacent bridge electrodes 30, two of which may be biased toward the bridge electrode 30.
  • the first pattern 10 and the second pattern 20 cross each other with an insulator interposed by a bridge electrode 30 that electrically connects the second pattern 20 in the second direction. Since the resistance of the sensing pattern is increased, the resistance reduction effect can be maximized when formed as described above.
  • an insulator 60 is formed on the bridge electrode 30.
  • the insulator 60 serves to electrically insulate the first pattern 10 to be described later from the bridge electrode 30.
  • a first pattern is formed to cover the first auxiliary pattern in a first direction
  • a second pattern is formed to cover the second auxiliary pattern in a second direction.
  • the joint of the unit pattern is formed to pass over the insulator 60.
  • the method of forming the bridge electrode 30, the first and second auxiliary patterns 40 and 50, and the insulator 60 is not particularly limited, and is formed by a method within the range exemplified by the above-described sensing method. Can be.
  • the present invention provides a touch screen panel including the touch sensing electrode and the pixel unit.
  • the touch screen panel of the present invention further includes a configuration commonly used in the art, in addition to the touch sensing electrode and the pixel portion.
  • the present invention provides an image display device including the touch screen panel.
  • the 1st and 2nd patterns were formed by ITO (refractive index: 1.8, extinction coefficient: 0) in thickness of 20 nm.
  • an insulator is formed on the joint part of the unit pattern of the first pattern with an acrylic insulating material (refractive index: 1.51, extinction coefficient: 0), and the line bridge width of the unit bridge electrode is 8 ⁇ m and thickness is 0.2 ⁇ m with molybdenum on the insulator.
  • a bridge electrode was formed.
  • the bridge electrode and the auxiliary pattern were simultaneously formed in the same process.
  • the auxiliary pattern is molybdenum so that the first auxiliary pattern on the first pattern passes through the center of gravity of the first pattern, and the second auxiliary pattern on the second pattern forms a touch sensing electrode such that its extension line passes through the center of gravity of the bridge electrode. It was.
  • the refractive index and the extinction coefficient are described based on light of 550 nm wavelength.
  • a touch screen panel was manufactured by bonding the above-described touch sensing electrode to the pixel portion having the length of the unit pixel shown in Table 1.
  • An electric simulator (Q3D, Ansys) was used to calculate the line resistance between one end and the other end of the sensing electrode located in the unit pixel of the manufacturing groups.
  • Unit resistances according to Y values are illustrated in FIGS. 12 and 13.
  • the total light transmittance of the touch sensing electrodes of the manufacturing groups was measured using a haze meter (HM-150, Murakamisa), and the transmittance relative to the glass substrate was calculated.
  • the transmittance according to the Y value is shown in FIGS. 12 and 13.
  • the touch screen panel of the manufactured manufacturing group rapidly decreases at a value of 0.06 or less.
  • the Y value was 0.06 or more, the unit resistance was significantly lowered, and thus, the touch sensitivity could be expected to be remarkably improved, and it was confirmed that the Y value exhibited excellent transmittance (90% or more) in the range of 0.06 to 0.135. If the transmittance is 90% or more, it is preferable in view of excellent brightness of the display.
  • the unit resistance decreases in the order of manufacturing groups 1, 2, and 3, and the unit resistance of manufacturing group 3 is the smallest, and transmittance is manufacturing group 1,2,3. Lowering in order, it was confirmed that the transmittance of the manufacturing group 1 is the highest.
  • the unit resistance decreases in the order of manufacturing group 4, 5, 6, and 7, so that the unit resistance of manufacturing group 7 is the smallest, and transmittance is manufacturing group 4, 6 It was confirmed that the transmittance of manufacturing group 4 was the highest, in order of decreasing the order of 7,7.
  • the touch screen panel of the manufacturing group outside the scope of the present invention was confirmed that the unit resistance is large or the transmittance is not excellent.
  • substrate 10 first pattern
  • first auxiliary pattern 50 second auxiliary pattern

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Abstract

The present invention relates to a touch screen panel and, more specifically, to a touch screen panel which meets mathematical equation 1, thereby having remarkably low sensing electrode resistance and thus having excellent touch sensibility, the touch screen panel comprising: a touch sensing electrode; and a pixel part arranged on the lower section of the touch sensing electrode, wherein the touch sensing electrode comprises: a sensing pattern provided with a first pattern formed in a first direction and a second pattern formed in a second direction; a bridge electrode for electrically connecting spaced unit patterns of the second pattern; and an auxiliary pattern provided to the upper section or the lower section of at least one of the first pattern and the second pattern, and the pixel part comprises a plurality of unit pixels.

Description

터치 스크린 패널Touch screen panel
본 발명은 터치 스크린 패널에 관한 것이다.The present invention relates to a touch screen panel.
통상적으로 터치스크린 패널은 손으로 접촉(touch)하면 그 위치를 입력 받도록 하는 특수한 입력장치를 장착한 스크린 패널이다. 이러한 터치스크린 패널은 키보드를 사용하지 않고 스크린에 나타난 문자나 특정 위치에 사람의 손 또는 물체가 닿으면, 그 위치를 파악하여 저장된 소프트웨어에 의해 특정 처리를 할 수 있도록, 화면에서 직접 입력자료를 받을 수 있게 한 것으로 다층으로 적층되어 구성된다.In general, the touch screen panel is a screen panel equipped with a special input device to receive the position when touched by hand. The touch screen panel receives input data directly from the screen so that when a person's hand or an object touches a character or a specific location displayed on the screen without using a keyboard, the touch screen panel can identify the location and perform specific processing by the stored software. It is made possible by being laminated | stacked in multiple layers.
스크린에 표시되는 영상의 시인성을 저하시키지 않으면서 터치된 부분을 인식하기 위해서는 투명한 터치 감지 전극의 사용이 필수적이며, 통상적으로 소정의 패턴으로 형성된 감지 패턴이 사용된다.In order to recognize the touched portion without degrading the visibility of the image displayed on the screen, the use of a transparent touch sensing electrode is essential, and typically, a sensing pattern formed in a predetermined pattern is used.
이러한 감지 패턴은 통상 제1 패턴과 제2 패턴으로 형성될 수 있다. 제1 패턴과 제2 패턴은 서로 다른 방향으로 배치되어, 터치되는 지점의 X 좌표 및 Y 좌표에 대한 정보를 제공하게 된다. 구체적으로는, 사람의 손 또는 물체가 커버 윈도우 기판에 접촉되면, 제1 패턴, 제2 패턴 및 위치 검출라인을 경유하여 구동회로 측으로 접촉위치에 따른 정전용량의 변화가 전달된다. 그리고, X 및 Y 입력처리회로 등에 의해 정전용량의 변화가 전기적 신호로 변환됨에 의해 접촉위치가 파악된다.The sensing pattern may be generally formed of a first pattern and a second pattern. The first pattern and the second pattern are disposed in different directions to provide information about the X and Y coordinates of the touched point. Specifically, when a human hand or an object contacts the cover window substrate, a change in capacitance according to the contact position is transmitted to the driving circuit side via the first pattern, the second pattern, and the position detection line. Then, the contact position is grasped by the change of the capacitance by the X and Y input processing circuit and the like converted into an electrical signal.
현재, 정전용량 방식의 터치패널에서는 투명 터치 감지 전극으로 ITO(Indium-Tin Oxide)나 전도성 고분자(Conductive Polymer)등을 사용하고 있다. 그러나, ITO 또는 전도성 고분자 등으로 이루어진 전극은 높은 면저항 문제가 발생된다.At present, capacitive touch panels use indium tin oxide (ITO) or conductive polymers as transparent touch sensing electrodes. However, an electrode made of ITO or a conductive polymer or the like has a high sheet resistance problem.
또한, 브릿지 전극을 사용하는 경우 터치 스크린 패널의 투과율이 저하되는 문제가 있다.In addition, when using a bridge electrode, there is a problem that the transmittance of the touch screen panel is lowered.
한국공개특허 제2013-0078065호에는 터치패널이 개시되어 있다.Korean Patent Publication No. 2013-0078065 discloses a touch panel.
[선행기술문헌][Preceding technical literature]
[특허문헌][Patent Documents]
(특허문헌 1) 한국공개특허 제2013-0078065호(Patent Document 1) Korean Patent Publication No. 2013-0078065
본 발명은 감지 전극의 저항이 현저히 낮아져, 터치 민감성이 개선된 터치 스크린 패널을 제공하는 것을 목적으로 한다.SUMMARY OF THE INVENTION An object of the present invention is to provide a touch screen panel with a significantly lower resistance of a sensing electrode, thereby improving touch sensitivity.
또한, 본 발명은 투과율의 저하가 적은 터치 스크린 패널을 제공하는 것을 목적으로 한다.Moreover, an object of this invention is to provide the touch screen panel with few fall of a transmittance | permeability.
1. 터치 감지 전극 및 상기 터치 감지 전극 하부에 배치된 화소부를 포함하며,1. A touch sensing electrode and a pixel unit disposed below the touch sensing electrode.
상기 터치 감지 전극은 제1 방향으로 형성된 제1 패턴 및 제2 방향으로 형성된 제2 패턴을 구비한 감지패턴;The touch sensing electrode may include a sensing pattern having a first pattern formed in a first direction and a second pattern formed in a second direction;
상기 제2 패턴의 이격된 단위 패턴을 전기적으로 연결하는 브릿지 전극; 및A bridge electrode electrically connecting the spaced unit patterns of the second pattern; And
상기 제1 패턴 및 제2 패턴 중 적어도 하나의 상부 또는 하부에 구비된 적어도 하나의 보조패턴;을 포함하고, And at least one auxiliary pattern provided above or below at least one of the first pattern and the second pattern.
상기 화소부는 복수의 단위화소를 포함하고,The pixel unit includes a plurality of unit pixels,
상기 보조패턴은 각각 하기 수학식 1을 만족하는, 터치 스크린 패널:Each of the auxiliary patterns satisfies Equation 1 below:
[수학식 1][Equation 1]
0.06 ≤ (P2/P1)* (P3/A)≤ 0.1350.06 ≤ (P2 / P1) * (P3 / A) ≤ 0.135
(식 중에서, P1은 보조패턴의 선폭으로 0.01 내지 40㎛이며, P2는 보조패턴의 두께로 0.005 내지 20㎛이며, P3는 단위화소 상부 영역 내 보조패턴의 길이로 5 내지 500 ㎛이고, A는 단위화소의 길이임).(Wherein P1 is 0.01 to 40 µm in the width of the auxiliary pattern, P2 is 0.005 to 20 µm in the thickness of the auxiliary pattern, P3 is 5 to 500 µm as the length of the auxiliary pattern in the upper region of the unit pixel, and A is The length of the unit pixel).
2. 위 1에 있어서, 상기 P1은 1 내지 30㎛인, 터치 스크린 패널.2. In the above 1, wherein P1 is 1 to 30㎛, touch screen panel.
3. 위 1에 있어서, 상기 P2는 0.05 내지 1.5㎛인, 터치 스크린 패널.3. In the above 1, wherein the P2 is 0.05 to 1.5㎛, touch screen panel.
4. 위 1에 있어서, 상기 P3는 5 내지 400㎛인, 터치 스크린 패널.4. In the above 1, wherein the P3 is 5 to 400㎛, touch screen panel.
5. 위 1에 있어서, 상기 A는 20 내지 500㎛인, 터치 스크린 패널.5. In the above 1, wherein A is 20 to 500㎛, touch screen panel.
6. 위 1에 있어서, 상기 P1은 1 내지 10㎛인, 터치 스크린 패널.6. In the above 1, wherein P1 is 1 to 10㎛, touch screen panel.
7. 위 1에 있어서, 상기 P2는 0.1 내지 1.5㎛인, 터치 스크린 패널.7. In the above 1, wherein the P2 is 0.1 to 1.5㎛, touch screen panel.
8. 위 1에 있어서, 상기 P3는 10 내지 300㎛인, 터치 스크린 패널.8. In the above 1, wherein the P3 is 10 to 300㎛, touch screen panel.
9. 위 1에 있어서, 상기 A는 20 내지 400㎛인, 터치 스크린 패널.9. In the above 1, wherein A is 20 to 400㎛, touch screen panel.
10. 위 1에 있어서, P1은 1 내지 10㎛이고, P2는 0.1 내지 1.5㎛이고, P3는 10 내지 300㎛이고, A는 20 내지 400㎛인, 터치 스크린 패널.10. In the above 1, P1 is 1 to 10㎛, P2 is 0.1 to 1.5㎛, P3 is 10 to 300㎛, A is 20 to 400㎛, touch screen panel.
11. 위 1에 있어서, 상기 P3는 A와 동일하거나 큰 값을 갖는, 터치 스크린 패널.11. The touch screen panel of 1 above, wherein the P3 has a value equal to or greater than A.
12. 위 1에 있어서, 상기 제1 패턴에 구비되는 제1 보조패턴은 제1 방향으로 형성되고, 상기 제2 패턴에 구비되는 제2 보조패턴은 제2 방향으로 형성되는, 터치 스크린 패널.12. In the above 1, wherein the first auxiliary pattern provided in the first pattern is formed in a first direction, the second auxiliary pattern provided in the second pattern is formed in a second direction, the touch screen panel.
13. 위 1에 있어서, 상기 제1 및 제2 보조패턴은 브릿지 전극과 동일한 소재로 형성되는, 터치 스크린 패널.13. In the above 1, wherein the first and second auxiliary pattern is formed of the same material as the bridge electrode, the touch screen panel.
14. 위 1에 있어서, 상기 제1 패턴 및 제2 패턴의 단위 패턴은 면저항이 50 내지 500Ω/□인, 터치 스크린 패널.14. In the above 1, wherein the unit pattern of the first pattern and the second pattern has a sheet resistance of 50 ~ 500Ω / □, the touch screen panel.
15. 위 12에 있어서, 상기 제2 보조패턴은 브릿지 전극과 연결되는, 터치 스크린 패널.15. The touch screen panel as set forth in 12 above, wherein the second auxiliary pattern is connected to a bridge electrode.
16. 위 12에 있어서, 상기 제2 보조패턴은 브릿지 전극과 분리되는, 터치 스크린 패널.16. The touch screen panel as set forth in 12 above, wherein the second auxiliary pattern is separated from the bridge electrode.
17. 위 12에 있어서, 제1 및 제2 보조패턴은 서로 독립적으로 1개 이상의 분리된 추가 보조 패턴을 더 구비한, 터치 스크린 패널.17. The touch screen panel of claim 12, wherein the first and second auxiliary patterns further include one or more separate additional auxiliary patterns independently of each other.
18. 위 12에 있어서, 상기 제1 패턴의 단위 패턴 상부 또는 하부에서 제1 보조패턴은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극 쪽으로 치우치도록 위치한, 터치 스크린 패널.18. The touch screen panel of claim 12, wherein the first auxiliary pattern is separated into two or more unit patterns on the upper or lower unit pattern of the first pattern, two of which are disposed to be biased toward the bridge electrode.
19. 위 12에 있어서, 상기 제2 패턴의 단위 패턴 상부 또는 하부에서 제2 보조패턴은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극 쪽으로 치우치도록 위치한, 터치 스크린 패널.19. The touch screen panel as set forth in 12 above, wherein the second auxiliary pattern is separated into two or more unit patterns on the upper or lower part of the unit pattern of the second pattern, two of which are disposed to be biased toward the bridge electrode.
20. 위 1에 있어서, 단위 브릿지 전극의 선폭이 1 내지 30㎛인, 터치 스크린 패널.20. In the above 1, the line width of the unit bridge electrode is 1 to 30㎛, touch screen panel.
21. 위 1에 있어서, 상기 브릿지 전극은 두께가 0.05 내지 1.5㎛인, 터치 스크린 패널.21. In the above 1, wherein the bridge electrode has a thickness of 0.05 to 1.5㎛, touch screen panel.
22. 위 1에 있어서, 상기 브릿지 전극은 몰리브덴, 은, 알루미늄, 구리, 팔라듐, 금, 백금, 아연, 주석, 티타늄 또는 이들의 합금으로 제조된, 터치 스크린 패널.22. The touch screen panel of 1, wherein the bridge electrode is made of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium, or an alloy thereof.
23. 위 청구항 1 내지 22 중 어느 한 항의 터치 스크린 패널을 포함하는 화상 표시 장치.23. An image display device comprising the touch screen panel of any one of claims 1 to 22 above.
본 발명의 터치 스크린 패널은, 감지 전극의 저항이 현저히 낮아 터치 민감성이 우수하고, 투과율이 우수하다. The touch screen panel of the present invention has a remarkably low resistance of the sensing electrode, which is excellent in touch sensitivity and excellent in transmittance.
도 1은 본 발명의 일 구현예에 따른 터치 감지 전극의 평면도이다.1 is a plan view of a touch sensing electrode according to an embodiment of the present invention.
도 2는 본 발명의 일 구현예에 따른 터치 감지 전극의 수직 단면도이다.2 is a vertical cross-sectional view of a touch sensing electrode according to an embodiment of the present invention.
도 3은 본 발명의 일 구현예에 따른 터치 감지 전극의 수직 단면도이다.3 is a vertical cross-sectional view of the touch sensing electrode according to the embodiment of the present invention.
도 4는 본 발명의 일 구현예에 따른 터치 감지 전극의 평면도이다.4 is a plan view of a touch sensing electrode according to an embodiment of the present invention.
도 5는 본 발명의 일 구현예에 따른 터치 감지 전극의 수직 단면도이다.5 is a vertical cross-sectional view of a touch sensing electrode according to an embodiment of the present invention.
도 6은 본 발명의 일 구현예에 따른 터치 감지 전극의 수직 단면도이다.6 is a vertical cross-sectional view of a touch sensing electrode according to an embodiment of the present invention.
도 7은 본 발명의 일 구현예에 따른 터치 감지 전극의 평면도이다.7 is a plan view of a touch sensing electrode according to an embodiment of the present invention.
도 8은 본 발명의 일 구현예에 따른 터치 감지 전극에서 제1 패턴의 단위 패턴을 나타내는 평면도이다.8 is a plan view illustrating a unit pattern of a first pattern in a touch sensing electrode according to an embodiment of the present invention.
도 9는 본 발명의 일 구현예에 따른 터치 감지 전극에서 제1 패턴의 단위 패턴을 나타내는 평면도이다.9 is a plan view illustrating a unit pattern of a first pattern in a touch sensing electrode according to an embodiment of the present invention.
도 10은 본 발명의 일 구현예에 따른 터치 스크린 패널에서 제1 패턴, 제1 보조패턴, 추가 보조 패턴 및 단위화소를 나타내는 개략적인 평면도이다.10 is a schematic plan view illustrating a first pattern, a first auxiliary pattern, an additional auxiliary pattern, and a unit pixel in a touch screen panel according to an embodiment of the present invention.
도 11은 본 발명의 일 구현예에 따른 터치 스크린 패널에서 보조패턴의 선폭 및 단위화소의 길이를 나타내는 평면도이다.FIG. 11 is a plan view illustrating a line width and a length of a unit pixel of an auxiliary pattern in a touch screen panel according to an exemplary embodiment of the present invention. FIG.
도 12 및 13은 제조군의 각각 Y값에 따른 저항 및 투과율을 나타낸 그래프이다. 12 and 13 are graphs showing the resistance and transmittance according to the Y values of the manufacturing groups, respectively.
본 발명은 터치 감지 전극 및 상기 터치 감지 전극 하부에 배치된 화소부를 포함하며, 상기 터치 감지 전극은 제1 방향으로 형성된 제1 패턴 및 제2 방향으로 형성된 제2 패턴을 구비한 감지패턴; 상기 제2 패턴의 이격된 단위 패턴을 전기적으로 연결하는 브릿지 전극; 및 상기 제1 패턴 및 제2 패턴 중 적어도 하나의 상부 또는 하부에 구비된 보조패턴;을 포함하고, 상기 화소부는 복수의 단위화소를 포함하고, 상기 보조패턴은 각각 수학식 1을 만족함으로써, 감지 전극의 저항이 현저히 낮아 터치 민감성이 우수하고, 투과율이 우수한 터치 스크린 패널에 관한 것이다.The present invention includes a touch sensing electrode and a pixel unit disposed below the touch sensing electrode, the touch sensing electrode comprising: a sensing pattern having a first pattern formed in a first direction and a second pattern formed in a second direction; A bridge electrode electrically connecting the spaced unit patterns of the second pattern; And an auxiliary pattern disposed above or below at least one of the first pattern and the second pattern, wherein the pixel unit includes a plurality of unit pixels, and the auxiliary pattern satisfies Equation 1, respectively. The resistance of the electrode is significantly low, and relates to a touch screen panel having excellent touch sensitivity and excellent transmittance.
이하 도면을 참조하여, 본 발명을 상세히 설명하기로 한다.Hereinafter, the present invention will be described in detail with reference to the drawings.
<화소부><Pixel part>
본 발명의 터치 스크린 패널은 당 분야에서 통상적으로 사용되는 화소부(90)를 포함한다.The touch screen panel of the present invention includes a pixel portion 90 which is commonly used in the art.
화소부(90)는 적, 녹, 청색의 색상을 구현할 수 있는 부위로서, 화소부(90)의 구성 및 위치는 특별히 한정되지 않고, 당 분야에 통상적으로 사용되는 구성을 포함하고 통상적으로 형성되는 위치에 형성될 수 있으며, 구체적으로 시인자측 기준으로 터치 감지 전극의 하부(터치 감지 전극을 기준으로 시인측의 반대편)에 위치될 수 있다. The pixel unit 90 is a portion capable of implementing red, green, and blue colors, and the structure and position of the pixel unit 90 are not particularly limited, and include a structure that is commonly used in the art and is commonly formed. It may be formed at a position, and specifically, may be positioned below the touch sensing electrode (opposite to the viewing side with respect to the touch sensing electrode) based on the viewer side.
도 10에 도시된 바와 같이 화소부(90)는 복수의 단위화소(80)를 포함한다. 단위 화소(80)의 구성은 R,G,B 색상의 서브화소로 이루어질 수 있다. As illustrated in FIG. 10, the pixel unit 90 includes a plurality of unit pixels 80. The unit pixel 80 may include subpixels of R, G, and B colors.
단위화소(80)의 길이 A는 도 11에 도시된 바와 같이 R,G,B 색상의 서브화소를 가로지르는 방향의 단위화소(80)의 길이를 의미한다.As shown in FIG. 11, the length A of the unit pixel 80 means the length of the unit pixel 80 in a direction crossing the subpixels of R, G, and B colors.
단위화소(80)의 길이는 후술하는 수학식 1의 범위를 만족하는 범위 내라면 특별히 한정되지 않으며, 예를 들면 20 내지 500㎛일 수 있고, 바람직하게는 20 내지 400㎛일 수 있으나 이에 제한되는 것은 아니며, 사용되는 화상 표시 장치에 따라 달라질 수 있다. The length of the unit pixel 80 is not particularly limited as long as it is within a range satisfying the range of Equation 1 to be described later. For example, the unit pixel 80 may be 20 to 500 μm, preferably 20 to 400 μm, but is not limited thereto. It is not a matter of course and may vary depending on the image display apparatus used.
<터치 감지 전극><Touch Sensing Electrode>
감지패턴Detection pattern
감지 패턴은 제1 방향으로 형성된 제1 패턴(10) 및 제2 방향으로 형성된 제2 패턴(20)을 구비할 수 있다.The sensing pattern may include a first pattern 10 formed in a first direction and a second pattern 20 formed in a second direction.
제1 패턴(10)과 제2 패턴(20)은 서로 다른 방향으로 배치된다. 예를 들면, 제1 방향은 X축 방향, 제2 방향은 이와 교차하는 Y축 방향일 수 있으나, 이에 제한되는 것은 아니다.The first pattern 10 and the second pattern 20 are disposed in different directions. For example, the first direction may be an X-axis direction, and the second direction may be a Y-axis direction intersecting with the second direction, but is not limited thereto.
제1 패턴(10)과 제2 패턴(20)은 터치되는 지점의 X 좌표 및 Y 좌표에 대한 정보를 제공하게 된다. 구체적으로는, 사람의 손 또는 물체가 커버 윈도우 기판에 접촉되면, 제1 패턴(10), 제2 패턴(20) 및 위치 검출라인을 경유하여 구동회로 측으로 접촉위치에 따른 정전용량의 변화가 전달된다. 그리고, X 및 Y 입력처리회로(미도시) 등에 의해 정전용량의 변화가 전기적 신호로 변환됨에 의해 접촉위치가 파악된다.The first pattern 10 and the second pattern 20 provide information about the X coordinate and the Y coordinate of the touched point. Specifically, when a human hand or an object contacts the cover window substrate, a change in capacitance according to the contact position is transmitted to the driving circuit via the first pattern 10, the second pattern 20, and the position detection line. do. Then, the contact position is grasped by the change of the capacitance converted into an electrical signal by the X and Y input processing circuit (not shown) or the like.
이와 관련하여, 제1 패턴(10) 및 제2 패턴(20)은 동일층에 형성되며, 터치되는 지점을 감지하기 위해서는 각각의 패턴들이 전기적으로 연결되어야 한다. 그런데, 제1 패턴(10)의 단위 패턴은 이음부를 통해 서로 연결된 형태이지만 제2 패턴(20)의 단위 패턴은 섬(island) 형태로 서로 분리된 구조로 되어 있으므로 제2 패턴(20)을 전기적으로 연결하기 위해서는 별도의 브릿지 전극(30)이 필요하다. 브릿지 전극(30)에 대해서는 후술하도록 한다.In this regard, the first pattern 10 and the second pattern 20 are formed on the same layer, and the respective patterns must be electrically connected to detect a touched point. However, since the unit patterns of the first pattern 10 are connected to each other through the joints, the unit patterns of the second pattern 20 are separated from each other in an island form to electrically connect the second pattern 20. In order to connect with a separate bridge electrode 30 is required. The bridge electrode 30 will be described later.
감지 패턴의 두께는 특별히 한정되지 않으며, 예를 들면 각각 10 내지 200nm일 수 있다. 감지 패턴의 두께가 10nm 미만이면 전기저항이 커져 터치 민감도가 저하될 수 있고, 200nm 초과이면 반사율이 커져 시인성의 문제가 생길 수 있다.The thickness of the sensing pattern is not particularly limited and may be, for example, 10 to 200 nm. When the thickness of the sensing pattern is less than 10 nm, the electrical resistance may increase, and thus the touch sensitivity may be lowered.
감지 패턴은 당 분야에 알려진 투명 전극 소재가 제한 없이 적용될 수 있다. 예를 들면, 인듐주석산화물(ITO), 인듐아연산화물(IZO), 아연산화물(ZnO), 인듐아연주석산화물(IZTO), 카드뮴주석산화물(CTO), PEDOT(poly(3,4-ethylenedioxythiophene)), 탄소나노튜브(CNT), 그래핀(grapheme), 금속와이어 등을 들 수 있으며, 이들은 단독 또는 2종 이상 혼합하여 사용할 수 있다. 바람직하게는 인듐주석산화물(ITO)이 사용될 수 있다. 금속와이어에 사용되는 금속은 특별히 한정되지 않으며, 예를 들면 은(Ag), 금, 알루미늄, 구리, 철, 니켈, 티타늄, 텔레늄, 크롬 등을 들 수 있다. 이들은 단독 또는 2종 이상 혼합하여 사용할 수 있다.The sensing pattern may be applied without limitation to the transparent electrode material known in the art. For example, indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc oxide (IZTO), cadmium tin oxide (CTO), PEDOT (poly (3,4-ethylenedioxythiophene)) , Carbon nanotubes (CNT), graphene (grapheme), metal wires and the like, these may be used alone or in combination of two or more. Preferably indium tin oxide (ITO) may be used. The metal used for a metal wire is not specifically limited, For example, silver (Ag), gold, aluminum, copper, iron, nickel, titanium, telenium, chromium, etc. are mentioned. These can be used individually or in mixture of 2 or more types.
감지 패턴은 그 단위 패턴의 면저항이 50 내지 500Ω/□일 수 있다. 면저항이 50Ω/□ 미만이면 투과율이 낮아서 해상도가 저하될 수 있고, 500Ω/□ 이상이면 터치 감도가 저하될 수 있다.The sensing pattern may have a sheet resistance of 50 to 500 Ω / □ of the unit pattern. If the sheet resistance is less than 50Ω / □, the transmittance may be low and the resolution may be reduced. If the sheet resistance is 500Ω / □ or more, the touch sensitivity may be reduced.
감지 패턴의 면저항을 조절하는 방법은 특별히 한정되지 않고 당 분야에 공지된 방법에 의할 수 있으며, 예를 들면 소재를 바꾸거나, 다른 소재를 더 혼합한다거나, 패턴의 두께를 더 두껍게 하는 등의 방법에 의할 수 있다.The method for adjusting the sheet resistance of the sensing pattern is not particularly limited, and may be based on methods known in the art, for example, changing materials, further mixing other materials, or thickening the pattern. It can be by.
브릿지 전극Bridge electrode
브릿지 전극(30)은 제2 패턴(20)의 이격된 단위 패턴을 전기적으로 연결한다.The bridge electrode 30 electrically connects the unit patterns spaced apart from the second pattern 20.
이때, 브릿지 전극(30)은 감지 패턴 중 제1 패턴(10)과는 전기적으로 차단되어야 하므로, 이를 위해 절연체가 형성된다. 이에 대해서는 후술하도록 한다.In this case, since the bridge electrode 30 must be electrically blocked from the first pattern 10 of the sensing pattern, an insulator is formed for this purpose. This will be described later.
브릿지 전극(30)은 제2 패턴(20)의 상부 또는 하부에 형성될 수 있다.The bridge electrode 30 may be formed above or below the second pattern 20.
본 발명에 따른 브릿지 전극(30)은 금속 소재로 형성되고, 바람직하게는 금속 배선 및 위치 검출라인과 동일 소재로 형성된다. 그러한 경우에 금속 배선 및 위치 검출라인의 형성 시에 브릿지 전극(30)을 함께 형성할 수 있어 공정을 보다 단순화 할 수 있다.The bridge electrode 30 according to the present invention is formed of a metal material, and preferably formed of the same material as the metal wiring and the position detection line. In such a case, the bridge electrodes 30 may be formed together in forming the metal lines and the position detection lines, thereby simplifying the process.
상기 금속은 전기 전도도가 우수하고 저항이 낮은 것이라면 특별히 한정되지 않으며, 예를 들면 몰리브덴, 은, 알루미늄, 구리, 팔라듐, 금, 백금, 아연, 주석, 티타늄 등을 들 수 있다. 이들은 단독 또는 2종 이상 혼합하여 사용할 수 있다.The metal is not particularly limited as long as it has excellent electrical conductivity and low resistance, and examples thereof include molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, and titanium. These can be used individually or in mixture of 2 or more types.
단위 브릿지 전극(30)의 선폭은 특별히 한정되지 않으며, 예를 들면 1 내지 30㎛일 수 있고, 바람직하게는 1 내지 20㎛일 수 있으나 이에 제한되는 것은 아니다. 브릿지의 선폭이 1㎛ 미만이면 저항이 과도하게 높아질 수 있고, 30㎛ 초과이면 패턴이 시인될 수 있다.The line width of the unit bridge electrode 30 is not particularly limited, and may be, for example, 1 to 30 μm, preferably 1 to 20 μm, but is not limited thereto. If the line width of the bridge is less than 1 μm, the resistance may be excessively high, and if it is more than 30 μm, the pattern may be viewed.
브릿지 전극(30)의 두께는 특별히 한정되지 않으며, 예를 들면 0.05 내지 1.5㎛일 수 있고, 바람직하게는 0.1 내지 1㎛일 수 있으나 이에 제한되는 것은 아니다. 브릿지의 두께가 0.05㎛ 미만이면 저항이 충분히 낮아지지 않아 터치 감도가 낮아질 수 있고, 1.5㎛ 초과이면 이후 공정시 두께 불균일을 초래할 수 있다. The thickness of the bridge electrode 30 is not particularly limited, and may be, for example, 0.05 to 1.5 μm, preferably 0.1 to 1 μm, but is not limited thereto. If the thickness of the bridge is less than 0.05㎛ the resistance is not low enough may lower the touch sensitivity, if it is more than 1.5㎛ may cause thickness non-uniformity in subsequent processes.
또한, 브릿지 전극(30)은 2종 이상의 금속을 2층 이상 적층한 형태일 수 있다. 전술한 금속 소재의 범위 내에서 2종 이상의 금속으로 2층, 3층 등의 다층의 구조로 형성될 수 있으며, 예를 들면, 몰리브덴/알루미늄/몰리브덴의 3층의 구조를 들 수 있으나, 이에 제한되는 것은 아니다.In addition, the bridge electrode 30 may have a form in which two or more metals are stacked in two or more layers. Within the range of the metal material described above, two or more metals may be formed in a multilayer structure such as two layers or three layers. For example, three layers of molybdenum / aluminum / molybdenum may be mentioned. It doesn't happen.
보조패턴Auxiliary pattern
본 발명에 따른 터치 감지 전극은 상기 제1 패턴 및 제2 패턴 중 적어도 하나의 상부 또는 하부에 구비된 적어도 하나의 보조패턴을 포함한다.The touch sensing electrode according to the present invention includes at least one auxiliary pattern disposed above or below at least one of the first pattern and the second pattern.
본 발명의 일 구현예에 있어서, 상기 제1 패턴의 상부 또는 하부에 구비된 보조패턴을 제1 보조패턴(40)으로, 제2 패턴의 상부 또는 하부에 구비된 보조패턴을 제2 보조패턴(50)으로 지칭한다.In one embodiment of the present invention, the auxiliary pattern provided on the upper or lower portion of the first pattern as the first auxiliary pattern 40, the auxiliary pattern provided on the upper or lower portion of the second pattern (second auxiliary pattern ( 50).
전술한 바와 같이 터치 감지 전극의 저항이 높아 터치 스크린 패널의 터치 민감도가 떨어지는 문제가 있다. 이에, 보조패턴을 형성하여 저항을 낮출 수 있으나 지나치게 큰 보조패턴은 투과율을 저하시킨다As described above, there is a problem that the touch sensitivity of the touch screen panel is inferior due to the high resistance of the touch sensing electrode. Thus, the auxiliary pattern can be formed to lower the resistance, but the excessively large auxiliary pattern reduces the transmittance.
본 발명은 제1 및 제2 보조패턴(40, 50)은 하기 수학식 1을 만족함으로써 투과율의 큰 감소 없이 감지패턴의 저항을 현저히 낮춰 상기 문제를 해결한다.In the present invention, the first and second auxiliary patterns 40 and 50 satisfy the following Equation 1, thereby significantly reducing the resistance of the sensing pattern without significantly reducing the transmittance, thereby solving the above problem.
[수학식 1][Equation 1]
0.06 ≤ (P2/P1)* (P3/A)≤ 0.1350.06 ≤ (P2 / P1) * (P3 / A) ≤ 0.135
(식 중에서, P1은 보조패턴의 선폭으로 0.01 내지 40㎛이며, P2는 보조패턴의 두께로 0.005 내지 20㎛이며, P3는 단위화소 상부 영역 내 보조패턴의 길이로 5 내지 500 ㎛이고, A는 단위화소의 길이임).(Wherein P1 is 0.01 to 40 µm in the width of the auxiliary pattern, P2 is 0.005 to 20 µm in the thickness of the auxiliary pattern, P3 is 5 to 500 µm as the length of the auxiliary pattern in the upper region of the unit pixel, and A is The length of the unit pixel).
도 10에는 터치 감지 패턴(제1 패턴, 10), 제1 보조패턴(40) 및 단위화소(80)의 개략적인 배치관계가 도시되어 있으며, 도 11에는 보조패턴의 선폭 P1 및 단위화소의 길이 A의 정의가 도시되어 있다. 10 illustrates a schematic arrangement of the touch sensing pattern (first pattern 10), the first auxiliary pattern 40, and the unit pixel 80, and FIG. 11 shows the line width P1 of the auxiliary pattern and the length of the unit pixel. The definition of A is shown.
본 발명에 있어서, 하나의 단위화소(80) 영역 상에 보조패턴이 2개 이상 형성될 수 있고, 이 경우에는 P3는 각각의 보조패턴 길이를 더한 값이 된다.In the present invention, two or more auxiliary patterns may be formed on one unit pixel 80 area, and in this case, P3 is a value obtained by adding the length of each auxiliary pattern.
상기 수학식 1의 (P2/P1)* (P3/A) 값인 Y값(이하 명세서에서 (P2/P1)* (P3/A)를 Y값으로 언급한다)이 0.06미만이면, 감지패턴의 저항이 현저히 높아지며, 0.135를 초과하면 투과율이 낮아진다. 이와 같이, 본 발명의 수학식 1을 만족하는 경우에 터치 스크린 패널의 투과율의 큰 감소없이 터치 민감도를 현저히 개선한다.When the Y value (hereinafter referred to as (P2 / P1) * (P3 / A) as the Y value) of the value of (P2 / P1) * (P3 / A) in Equation 1) is less than 0.06, the resistance of the sensing pattern Is significantly higher, and when it exceeds 0.135, the transmittance is lowered. As such, when the equation 1 of the present invention is satisfied, the touch sensitivity is remarkably improved without greatly reducing the transmittance of the touch screen panel.
제1 및 제2 보조패턴(40, 50)의 선폭 P1은 1 내지 30㎛일 수 있고, 바람직하게는 1 내지 10㎛일 수 있다. 보조패턴의 선폭이 1㎛ 미만이면 저항이 과도하게 높아질 수 있고, 30㎛ 초과이면 패턴이 시인될 수 있다.The line widths P1 of the first and second auxiliary patterns 40 and 50 may be 1 to 30 μm, and preferably 1 to 10 μm. If the line width of the auxiliary pattern is less than 1 μm, the resistance may be excessively high, and if the line width is more than 30 μm, the pattern may be visually recognized.
제1 및 제2 보조패턴(40)의 두께 P2는 0.05 내지 1.5㎛일 수 있고, 바람직하게는 0.1 내지 1.5㎛일 수 있다. 보조패턴의 두께가 0.05㎛ 미만이면 저항이 충분히 낮아지지 않아 터치 감도가 낮아질 수 있고, 1.5㎛ 초과이면 이후 공정시 두께 불균일을 초래할 수 있다.The thickness P2 of the first and second auxiliary patterns 40 may be 0.05 to 1.5 μm, and preferably 0.1 to 1.5 μm. When the thickness of the auxiliary pattern is less than 0.05㎛, the resistance may not be low enough, so the touch sensitivity may be lowered.
제1 및 제2 보조패턴(40, 50)의 길이 P3은 5 내지 400㎛일 수 있고, 바람직하게는 10 내지 300㎛일 수 있다. 보조패턴의 길이가 5㎛ 미만이면 저항 감소의 효과가 미비할 수 있고, 400㎛ 초과이면 투과율이 낮아질 수 있다. The length P3 of the first and second auxiliary patterns 40 and 50 may be 5 to 400 μm, and preferably 10 to 300 μm. If the length of the auxiliary pattern is less than 5㎛ the effect of the resistance reduction may be insignificant, if it is more than 400㎛ the transmittance may be lowered.
본 발명의 일 구현예에 있어서, 단위화소(80) 상부 영역 내에 2개 이상의 보조패턴을 형성되는 단위화소(80)가 복수인 경우 각 단위화소(80) 상의 보조패턴 간의 간격을 동일할 수 있으며, 단위화소(80) 상부 영역 내에 3개 이상의 보조패턴을 형성하는 경우 보조패턴 간의 간격은 동일한 간격을 가질 수 있다.In one embodiment of the present invention, when there are a plurality of unit pixels 80 in which two or more auxiliary patterns are formed in the upper region of the unit pixels 80, the spacing between the auxiliary patterns on each unit pixel 80 may be the same. In the case where three or more auxiliary patterns are formed in an upper region of the unit pixel 80, the intervals between the auxiliary patterns may have the same interval.
본 발명의 일 구현예에 있어서, 제1 및 제2 보조패턴(40, 50)의 선폭 P1은 1 내지 10㎛이고, 제1 및 제2 보조패턴(40, 50)의 두께 P2는 0.1 내지 1.5㎛이고, 제1 및 제2 보조패턴(40, 50)의 길이 P3는 10 내지 300㎛이고, 단위화소(80)의 길이 A는 20 내지 400㎛일 수 있으며, 상기 범위에서 우수한 투과율 및 현저하게 낮은 저항을 가질 수 있다.In one embodiment of the present invention, the line width P1 of the first and second auxiliary patterns 40 and 50 is 1 to 10 μm, and the thickness P2 of the first and second auxiliary patterns 40 and 50 is 0.1 to 1.5. Μm, the length P3 of the first and second auxiliary patterns 40 and 50 is 10 to 300 μm, and the length A of the unit pixel 80 may be 20 to 400 μm, and excellent transmittance and remarkably in the above range. It can have a low resistance.
본 발명의 다른 일 구현예에 있어서, 보조패턴(40, 50)의 길이 P3는 단위화소(80)의 A와 동일하거나 클 수 있으며, 이 경우 우수한 투과율 및 현저하게 낮은 저항을 가질 수 있다.In another embodiment of the present invention, the length P3 of the auxiliary patterns 40 and 50 may be equal to or larger than A of the unit pixel 80, and in this case, may have excellent transmittance and significantly low resistance.
제1 및 제2 보조패턴(40, 50)은 그 방향은 특별히 한정되지 않으며, 예를 들면 제1 보조패턴(40)은 제1 방향으로, 제2 보조패턴(50)은 제2 방향으로 형성될 수 있다. 제1 패턴(10)은 제 1방향으로 연결되어 감지 신호를 전달하고, 제2 패턴(20)은 브릿지 전극(30)에 의해 제2 방향으로 연결되어 감지 신호를 전달하므로, 제1 및 제2 보조패턴(40, 50)이 상기 각각의 방향으로 형성되는 경우 저항 저하 및 터치 민감도 개선 효과를 극대화 할 수 있다. The direction of the first and second auxiliary patterns 40 and 50 is not particularly limited. For example, the first auxiliary pattern 40 is formed in the first direction and the second auxiliary pattern 50 is formed in the second direction. Can be. The first pattern 10 is connected in the first direction to transmit the sensing signal, and the second pattern 20 is connected in the second direction by the bridge electrode 30 to transmit the sensing signal. When the auxiliary patterns 40 and 50 are formed in the respective directions, resistance reduction and touch sensitivity improvement may be maximized.
또한, 상기 저항 저하 및 터치 민감도 개선의 측면에서 바람직하게는 제1 보조패턴(40)은 제1 패턴(10)의 단위 패턴의 무게중심을 지나도록 형성될 수 있고, 제2 보조패턴(40)은 그 연장선이 단위 브릿지 전극 무게 중심을 지나도록 형성될 수 있다.In addition, in view of lowering resistance and improving touch sensitivity, the first auxiliary pattern 40 may be formed to pass through the center of gravity of the unit pattern of the first pattern 10 and the second auxiliary pattern 40. The extension line may be formed such that the extension line passes the unit bridge electrode center of gravity.
도 1은 본 발명의 일 구현예에 따른 제1 및 제2 보조패턴(40, 50)이 감지 패턴 상에 형성된 경우의 터치 감지 전극의 평면도이고, 도 2 및 3은 본 발명의 각각의 일 구현예에 따른 터치 감지 전극의 단면도이다. 도 1 내지 3에 나타난 바와 같이, 제1 및 제2 보조패턴(40, 50)은 감지 패턴 상에 형성될 수 있다. 그리고 도 2와 같이 브릿지 전극(30)과 제2 보조패턴(50)이 서로 분리되어 있을 수도 있고, 도 3과 같이 연결되어 있을 수도 있다.1 is a plan view of a touch sensing electrode when the first and second auxiliary patterns 40 and 50 are formed on a sensing pattern according to an embodiment of the present invention, and FIGS. 2 and 3 are each an implementation of the present invention. A cross-sectional view of a touch sensing electrode according to an example. As illustrated in FIGS. 1 to 3, the first and second auxiliary patterns 40 and 50 may be formed on the sensing pattern. As shown in FIG. 2, the bridge electrode 30 and the second auxiliary pattern 50 may be separated from each other, or may be connected as shown in FIG. 3.
제1 및 제2 보조패턴(40, 50)이 감지 패턴 상에 형성된 경우, 제1 보조패턴(40)은 브릿지 전극(30)과는 서로 분리되도록 형성되는 것이고, 브릿지 전극(30)과 교차하는 제1 패턴(10)의 단위 패턴 사이의 이음부 상에는 선택적으로 형성될 수 있다.When the first and second auxiliary patterns 40 and 50 are formed on the sensing pattern, the first auxiliary patterns 40 are formed to be separated from the bridge electrodes 30 and cross the bridge electrodes 30. It may be selectively formed on the joint between the unit patterns of the first pattern 10.
또한, 도 4는 본 발명의 일 구현예에 따른 제1 및 제2 보조패턴(40)이 감지 패턴 하부에 형성된 경우의 터치 감지 전극의 평면도이고, 도 5 및 6은 본 발명의 각각의 일 구현예에 따른 터치 감지 전극의 단면도이다. 도 4 내지 6에 나타난 바와 같이, 제1 및 제2 보조패턴(40, 50)은 감지 패턴 하부에 형성될 수 있다. 그리고 도 5와 같이 브릿지 전극(30)과 제2 보조패턴(50)이 서로 분리되어 있을 수도 있고, 도 6과 같이 연결되어 있을 수도 있다.4 is a plan view of a touch sensing electrode when the first and second auxiliary patterns 40 are formed below the sensing pattern according to an embodiment of the present invention, and FIGS. 5 and 6 are respective implementations of the present invention. A cross-sectional view of a touch sensing electrode according to an example. As shown in FIGS. 4 to 6, the first and second auxiliary patterns 40 and 50 may be formed under the sensing pattern. 5, the bridge electrode 30 and the second auxiliary pattern 50 may be separated from each other, or may be connected as shown in FIG. 6.
또한, 제1 패턴(10)의 단위 패턴 상부 또는 하부에서 제1 보조패턴(40)은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브리지 전극(30) 쪽으로 치우치도록 위치할 수 있다.In addition, the first auxiliary pattern 40 may be separated into two or more unit patterns on the upper or lower part of the unit pattern of the first pattern 10, and two of them may be positioned to be biased toward the bridge electrode 30. .
마찬가지로, 제2 패턴(20)의 단위 패턴 상부 또는 하부에서 제2 보조패턴(50)은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극(30) 쪽으로 치우치도록 위치할 수 있다.Similarly, the second auxiliary pattern 50 may be separated into two or more unit patterns on the upper or lower part of the unit pattern of the second pattern 20, two of which may be positioned to be biased toward the bridge electrode 30. .
제1 패턴(10)과 제2 패턴(20)은, 제2 패턴(20)을 제2 방향으로 전기적으로 연결하는 브릿지 전극(30)에 의해 절연체를 사이에 두고 서로 교차하게 되는데, 그러한 교차점에서 감지 패턴의 저항이 높아지므로, 상기와 같이 형성되는 경우 저항 감소 효과를 극대화할 수 있다.The first pattern 10 and the second pattern 20 cross each other with an insulator interposed by a bridge electrode 30 that electrically connects the second pattern 20 in the second direction. Since the resistance of the sensing pattern is increased, the resistance reduction effect can be maximized when formed as described above.
도 7은 제1 및 제2 감지 패턴(40, 50)이 제1 및 제2 패턴(10, 20) 하부에 형성된, 본 발명의 일 구현예에 따른 터치 감지 전극의 평면도인데, 도 7에는 제1 패턴(10)의 단위 패턴 하부의 제1 보조패턴(40)이 2개의 단위 패턴으로 분리되어, 분리된 단위 패턴들이 브릿지 전극(30)에 치우치도록 위치한 구조가 예시되어 있다.7 is a plan view of a touch sensing electrode according to an embodiment of the present invention, in which the first and second sensing patterns 40 and 50 are formed below the first and second patterns 10 and 20. A structure in which the first auxiliary pattern 40 under the unit pattern of the first pattern 10 is separated into two unit patterns so that the separated unit patterns are biased to the bridge electrode 30 is illustrated.
추가로, 제1 및 제2 보조패턴(40, 50)은 서로 독립적으로 1개 이상의 분리된 추가 보조 패턴(70)을 더 구비할 수 있다.In addition, the first and second auxiliary patterns 40 and 50 may further include one or more additional auxiliary patterns 70 separated from each other.
추가 보조 패턴(70)은 제1 보조패턴(40)에서 제1 방향으로 형성된 패턴 이외의 패턴, 제2 보조패턴(50)에서 제2 방향으로 형성된 패턴 이외의 패턴을 의미한다.The additional auxiliary pattern 70 means a pattern other than the pattern formed in the first direction in the first auxiliary pattern 40 and a pattern other than the pattern formed in the second direction in the second auxiliary pattern 50.
도 8 및 도 9는 도 7의 구조에서 제1 보조패턴(40)이 제1 방향으로 형성된 패턴 외에도 제2 방향의 추가 보조 패턴(70)을 더 포함하는 경우를 나타낸 것으로서, 이와 같이 1개 이상의 추가 보조 패턴(70)을 더 구비할 수 있고, 도 8 및 9에는 제2 방향으로 형성된 추가 보조 패턴(70)을 더 포함하고 있는 경우만 도시되어 있으나, 이는 일 예시일 뿐, 그 방향은 특별히 한정되지 않는다.8 and 9 illustrate a case in which the first auxiliary pattern 40 further includes an additional auxiliary pattern 70 in a second direction in addition to the pattern formed in the first direction in the structure of FIG. 7. An additional auxiliary pattern 70 may be further provided, and only the case in which the additional auxiliary pattern 70 is further included in FIGS. 8 and 9 is formed in the second direction. It is not limited.
추가 보조 패턴(70)은 다양한 형상 및 방향으로 형성될 수 있다.The additional auxiliary pattern 70 may be formed in various shapes and directions.
그 형상의 예를 들면 원형; 타원형; 삼각형, 사각형, 오각형 등의 다각형 등의 다양한 형상을 가질 수 있으나, 이에 제한되는 것은 아니다.For example, circular; Elliptical; It may have various shapes such as a polygon such as a triangle, a quadrangle, a pentagon, and the like, but is not limited thereto.
또한, 제1 보조패턴(40)은 브릿지 전극(30)과 접하지 않도록, 브릿지 전극(30)이 형성된 부위만 제외하고 제1 방향으로 형성될 수 있고, 제2 보조패턴(50)은 브릿지 전극(30)과 연결되어 형성될 수도 있다.In addition, the first auxiliary pattern 40 may be formed in the first direction except for a portion where the bridge electrode 30 is formed so as not to contact the bridge electrode 30, and the second auxiliary pattern 50 may be a bridge electrode. It may be formed in connection with the (30).
제1 및 제2 보조패턴(40, 50)은 브릿지 전극(30)의 소재로 예시한 금속들로 형성될 수 있으며, 바람직하게는 브릿지 전극(30)과 동일한 소재로 형성될 수 있다. 그러한 경우에 브릿지 전극(30) 형성시에 제1 및 제2 보조패턴(40, 50)을 함께 형성할 수 있어, 공정 효율이 현저히 개선될 수 있다.The first and second auxiliary patterns 40 and 50 may be formed of metals exemplified as the material of the bridge electrode 30, and preferably, may be formed of the same material as the bridge electrode 30. In such a case, the first and second auxiliary patterns 40 and 50 may be formed together at the time of forming the bridge electrode 30, so that the process efficiency may be significantly improved.
절연체Insulator
절연체(60)는 제1 패턴(10)과 브릿지 전극(30)의 전기적 연결을 방지하기 위해서 제1 패턴(10)과 브릿지 전극(30) 사이에 형성된다.The insulator 60 is formed between the first pattern 10 and the bridge electrode 30 to prevent electrical connection between the first pattern 10 and the bridge electrode 30.
절연체는 제1 패턴(10)과 브릿지 전극(30) 사이의 국소 부위, 구체적으로 제1 패턴(10)의 단위 패턴의 이음부 상에만 패턴의 형태로 형성될 수 있다.The insulator may be formed in the form of a pattern only on the local region between the first pattern 10 and the bridge electrode 30, specifically, on the joint portion of the unit pattern of the first pattern 10.
본 발명에 따른 절연체(60)는 당 분야에 알려진 투명 절연 소재가 제한 없이 적용될 수 있다. 예를 들면 실리콘 산화물과 같은 금속 산화물이나 아크릴계 수지를 포함하는 투명한 감광성 수지 조성물 혹은 열경화성 수지 조성물을 사용하여 필요한 패턴으로 형성될 수 있다.The insulator 60 according to the present invention may be applied without limitation to a transparent insulating material known in the art. For example, it may be formed in a required pattern using a transparent photosensitive resin composition or a thermosetting resin composition containing a metal oxide such as silicon oxide or an acrylic resin.
기판Board
본 발명의 터치 감지 전극은 기판(1) 상에 형성된다.The touch sensing electrode of the present invention is formed on the substrate 1.
기판(1)은 당 분야에서 통상적으로 사용되는 소재가 제한 없이 사용될 수 있으며, 예를 들면 유리, 폴리에테르술폰(PES, polyethersulphone), 폴리아크릴레이트(PAR, polyacrylate), 폴리에테르 이미드(PEI, polyetherimide), 폴리에틸렌 나프탈레이트(PEN, polyethyelenen napthalate), 폴리에틸렌 테레프탈레이트(PET, polyethyelene terepthalate), 폴리페닐렌 설파이드(polyphenylene sulfide: PPS), 폴리아릴레이트(polyallylate), 폴리이미드(polyimide), 폴리카보네이트(PC, polycarbonate), 셀룰로오스 트리 아세테이트(TAC), 셀룰로오스 아세테이트 프로피오네이트(cellulose acetate propionate,CAP) 등을 들 수 있다.The substrate 1 may be any material commonly used in the art without limitation, for example, glass, polyethersulphone (PES), polyacrylate (PAR, polyacrylate), polyether imide (PEI, polyetherimide, polyethylene naphthalate (PEN, polyethyelenen napthalate), polyethylene terephthalate (PET, polyethyelene terepthalate), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate ( PC, polycarbonate), cellulose tri acetate (TAC), cellulose acetate propionate (CAP), and the like.
또한, 상기 기판은 터치스크린 패널의 최외면을 형성하는 커버 윈도우 기판 또는 디스플레이 패널일 수 있다.In addition, the substrate may be a cover window substrate or a display panel forming the outermost surface of the touch screen panel.
<터치 감지 전극의 제조 방법><Method for Manufacturing Touch Sensing Electrode>
또한, 본 발명은 상기 터치 감지 전극의 제조 방법을 제공한다.In addition, the present invention provides a method of manufacturing the touch sensing electrode.
이하, 본 발명의 일 구현예에 따른 터치 감지 전극의 제조 방법을 설명한다.Hereinafter, a method of manufacturing a touch sensing electrode according to an embodiment of the present invention will be described.
먼저, 제1 방향으로 단위 패턴이 이음부로 연결되어 형성된 제1 패턴 및 단위 패턴이 상기 이음부를 기준으로 이격되어 제2 방향으로 형성된 제2 패턴을 구비한 감지패턴을 형성한다.First, a first pattern formed by connecting a unit pattern to a joint part in a first direction and a unit pattern are separated from the joint part to form a sensing pattern including a second pattern formed in a second direction.
제1 패턴(10)과 제2 패턴(20)은 서로 다른 방향으로 배치된다. 예를 들면, 제1 방향은 X축 방향, 제2 방향은 이와 교차하는 Y축 방향일 수 있으나, 이에 제한되는 것은 아니다.The first pattern 10 and the second pattern 20 are disposed in different directions. For example, the first direction may be an X-axis direction, and the second direction may be a Y-axis direction intersecting with the second direction, but is not limited thereto.
제1 패턴(10) 및 제2 패턴(20)은 동일층에 형성되며, 제1 패턴(10)의 단위 패턴은 이음부를 통해 서로 연결된 형태, 제2 패턴(20)의 단위 패턴은 섬(island) 형태로 서로 분리된 구조로 형성된다.The first pattern 10 and the second pattern 20 are formed on the same layer, the unit pattern of the first pattern 10 is connected to each other through the joint portion, the unit pattern of the second pattern 20 is island ) To form a structure separated from each other.
감지 패턴은 물리적 증착법(Physical Vapor Deposition, PVD), 화학적 증착법(Chemical VaporDeposition, CVD) 등 다양한 박막 증착 기술에 의하여 형성될 수 있다. 예를 들면, 물리적 증착법의 한 예인 반응성 스퍼터링(reactive sputtering)에 의하여 형성될 수 있다. The sensing pattern may be formed by various thin film deposition techniques such as physical vapor deposition (PVD) and chemical vapor deposition (CVD). For example, it may be formed by reactive sputtering, which is an example of physical vapor deposition.
또한, 감지 패턴은 인쇄 공정으로 형성될 수 있다. 이러한 인쇄 공정 시, 그라비아 오프 셋(gravure off set), 리버스 오프 셋(reverse off set), 잉크젯 인쇄, 스크린 인쇄 및 그라비아(gravure) 인쇄 등 다양한 인쇄 방법이 이용될 수 있다. 특히, 인쇄 공정으로 감지 패턴을 형성할 경우 인쇄 가능한 페이스트 물질로 형성할 수 있다. 일례로, 탄소 나노 튜브(carbon nano tube, CNT), 전도성 폴리머 및 은 나노 와이어 잉크(Ag nano wire ink)로 형성할 수 있다.In addition, the sensing pattern may be formed by a printing process. In this printing process, various printing methods such as gravure off set, reverse off set, inkjet printing, screen printing, and gravure printing may be used. In particular, when the sensing pattern is formed by a printing process, the sensing pattern may be formed of a printable paste material. For example, it may be formed of carbon nanotubes (CNTs), conductive polymers, and silver nano wire inks.
상기 방법 외에 포토리소그래피에 의해서 형성될 수도 있다.In addition to the above method, it may be formed by photolithography.
감지 패턴은 전술한 소재 및 두께 범위 내에서 적절히 선택되어 형성될 수 있다.The sensing pattern may be appropriately selected and formed within the aforementioned materials and thickness ranges.
이후에, 제1 패턴(10)의 단위 패턴의 이음부 상에 절연체(60)를 형성한다.Thereafter, an insulator 60 is formed on the joint of the unit pattern of the first pattern 10.
절연체(60)는 후술할 브릿지 전극(30)과 제1 패턴(10)을 전기적으로 절연시키는 역할을 한다.The insulator 60 serves to electrically insulate the bridge electrode 30 and the first pattern 10 to be described later.
절연체(60)는 전술한 범위 내의 소재로 형성될 수 있다.The insulator 60 may be formed of a material within the above range.
다음으로, 상기 절연체(60) 상에 제2 패턴(20)의 단위 패턴을 전기적으로 연결하는 브릿지 전극(30)을 형성한다.Next, a bridge electrode 30 is formed on the insulator 60 to electrically connect the unit pattern of the second pattern 20.
브릿지 전극(30)은 전술한 선폭, 두께 및 소재 범위 내에서 형성될 수 있다.The bridge electrode 30 may be formed within the above-described line width, thickness and material range.
그리고, 상기 제1 패턴(10) 상에 제1 보조패턴(40), 제2 패턴(20) 상에 제2 보조패턴(50)을 형성한다.A first auxiliary pattern 40 and a second auxiliary pattern 50 are formed on the second pattern 20 on the first pattern 10.
제1 및 제2 보조패턴(40, 50)은 그 방향은 특별히 한정되지 않으며, 예를 들면 제1 보조패턴(40)은 제1 방향으로, 제2 보조패턴(50)은 제2 방향으로 형성될 수 있다.The direction of the first and second auxiliary patterns 40 and 50 is not particularly limited. For example, the first auxiliary pattern 40 is formed in the first direction and the second auxiliary pattern 50 is formed in the second direction. Can be.
제1 패턴(10)은 제 1방향으로 연결되어 감지 신호를 전달하고, 제2 패턴(20)의 단위 패턴은 브릿지 전극(30)에 의해 제2 방향으로 연결되므로, 제1 보조패턴(40)은 제1 방향으로, 제2 보조패턴(50)은 제2 방향으로 형성되는 것이 저항 감소 및 터치 민감도 개선의 측면에서 바람직하고, 보다 바람직하게는 제1 보조패턴(40)은 제1 패턴(10)의 단위 패턴의 무게중심을 지나도록 형성될 수 있고, 제2 보조패턴(40)은 그 연장선이 단위 브릿지 전극 무게 중심을 지나도록 형성될 수 있다.Since the first pattern 10 is connected in the first direction to transmit the sensing signal, and the unit pattern of the second pattern 20 is connected in the second direction by the bridge electrode 30, the first auxiliary pattern 40 In the first direction, the second auxiliary pattern 50 is preferably formed in the second direction in terms of reducing resistance and improving touch sensitivity. More preferably, the first auxiliary pattern 40 is formed in the first pattern 10. The second auxiliary pattern 40 may be formed such that its extension line passes the center of gravity of the unit bridge electrode.
제1 및 제2 보조패턴(40, 50)은 전술한 선폭, 두께, 길이 및 소재 범위 내에서 형성될 수 있으며, 바람직하게는 브릿지 전극(30)과 동일한 소재로 형성될 수 있다. 그러한 경우에, 브릿지 전극(30)과 보조패턴(40)의 형성을 위해 각각 별도의 설비 및 공정을 요하지 않고, 동일 설비로 한 공정 내에서 동시에 형성할 수 있어, 공정 효율이 현저히 개선된다.The first and second auxiliary patterns 40 and 50 may be formed within the above-described line width, thickness, length, and material range, and preferably, may be formed of the same material as the bridge electrode 30. In such a case, separate equipment and processes are not required for the formation of the bridge electrode 30 and the auxiliary pattern 40, and they can be simultaneously formed in the same equipment in the same process, and the process efficiency is significantly improved.
또한, 제1 패턴(10)의 단위 패턴 상부 또는 하부에서 제1 보조패턴(40)은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브리지 전극(30) 쪽으로 치우치도록 형성할 수 있다.In addition, the first auxiliary pattern 40 may be separated into two or more unit patterns on the upper or lower unit pattern of the first pattern 10, and two of them may be formed to be biased toward the bridge electrode 30. .
마찬가지로, 제2 패턴(20)의 단위 패턴 상부 또는 하부에서 제2 보조패턴(50)은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극(30) 쪽으로 치우치도록 형성할 수 있다.Similarly, the second auxiliary pattern 50 may be separated into two or more unit patterns on the upper or lower unit pattern of the second pattern 20, two of which may be formed to be biased toward the bridge electrode 30. .
제1 패턴(10)과 제2 패턴(20)은, 제2 패턴(20)을 제2 방향으로 전기적으로 연결하는 브릿지 전극(30)에 의해 절연체를 사이에 두고 서로 교차하게 되는데, 그러한 교차점에서 감지 패턴의 저항이 높아지므로, 상기와 같이 형성하는 경우 저항 감소 효과를 극대화 할 수 있다.The first pattern 10 and the second pattern 20 cross each other with an insulator interposed by a bridge electrode 30 that electrically connects the second pattern 20 in the second direction. Since the resistance of the sensing pattern is increased, the resistance reduction effect can be maximized when formed as described above.
제2 보조패턴(50)은 브릿지 전극(30)과 이격되어 형성될 수도 있고, 브릿지 전극(30)과 동일 선상에서 연결되어 형성될 수도 있다.The second auxiliary pattern 50 may be formed to be spaced apart from the bridge electrode 30, or may be connected to the bridge electrode 30 on the same line.
브릿지 전극(30), 제1 및 제2 보조패턴(40,50) 및 절연체(60)의 형성 방법은 특별히 한정되지 않으며, 예를 들면 전술한 감지 패턴의 형성 방법으로 예시한 범위 내의 방법으로 형성될 수 있다.The method of forming the bridge electrode 30, the first and second auxiliary patterns 40 and 50, and the insulator 60 is not particularly limited, and is formed by a method within the range exemplified by the above-described sensing method. Can be.
또한, 이하 본 발명의 터치 감지 전극의 제조 방법의 다른 일 구현예를 상세히 설명한다.In addition, another embodiment of the method of manufacturing the touch sensing electrode of the present invention will be described in detail.
먼저, 브릿지 전극(30)을 형성한다.First, the bridge electrode 30 is formed.
브릿지 전극(30)은 후술할 제2 패턴(20)의 단위 패턴을 전기적으로 연결하는 역할을 한다. 후술할 제2 패턴(20)의 단위 패턴은 단위 브릿지 전극의 양쪽에서 일부 중첩됨으로써 전기적으로 연결되는 것이므로, 상기 소정 간격은 제2 패턴(20)의 단위 패턴의 폭과 양쪽의 단위 브릿지 전극과 중첩되는 길이와의 차와 같다.The bridge electrode 30 serves to electrically connect the unit pattern of the second pattern 20 to be described later. Since the unit pattern of the second pattern 20 to be described later is electrically connected by partially overlapping both sides of the unit bridge electrode, the predetermined interval overlaps the width of the unit pattern of the second pattern 20 and both unit bridge electrodes. It is like difference with length to become.
브릿지 전극(30)은 전술한 선폭, 두께 및 소재 범위 내에서 형성될 수 있다.The bridge electrode 30 may be formed within the above-described line width, thickness and material range.
다음으로, 제1 방향으로 제1 보조패턴(40) 및 상기 브릿지 전극(30)과 동일한 제2 방향으로 제2 보조패턴(50)을 형성한다.Next, the second auxiliary pattern 50 is formed in the same second direction as the first auxiliary pattern 40 and the bridge electrode 30 in the first direction.
제1 보조패턴(40)과 제2 보조패턴(50)은 서로 다른 방향으로 배치된다. 예를 들면, 제1 방향은 X축 방향, 제2 방향은 이와 교차하는 Y축 방향일 수 있으나, 이에 제한되는 것은 아니다.The first auxiliary pattern 40 and the second auxiliary pattern 50 are arranged in different directions. For example, the first direction may be an X-axis direction, and the second direction may be a Y-axis direction intersecting with the second direction, but is not limited thereto.
후술할 제1 패턴(10)이 제1 보조패턴(40) 상에 형성되고, 제2 패턴(20)이 제2 보조패턴(50) 상에 형성되는데, 제1 패턴(10)은 제 1방향으로 연결되어 감지 신호를 전달하고, 제2 패턴(20)은 브릿지 전극(30)에 의해 제2 방향으로 연결되어 감지 신호를 전달하므로, 제1 및 제2 보조패턴(40, 50)이 상기 각각의 방향으로 형성되는 경우 저항 저하 및 터치 민감도 개선 효과를 극대화 할 수 있다.A first pattern 10, which will be described later, is formed on the first auxiliary pattern 40, and a second pattern 20 is formed on the second auxiliary pattern 50. The first pattern 10 is formed in a first direction. Are connected to each other to transmit a sensing signal, and the second pattern 20 is connected to the second direction by the bridge electrode 30 to transmit a sensing signal, so that the first and second auxiliary patterns 40 and 50 are respectively When formed in the direction of the resistance can be maximized to reduce the resistance and improve the touch sensitivity.
제1 및 제2 보조패턴(40, 50)은 전술한 선폭, 두께 및 소재 범위 내에서 형성될 수 있으며, 바람직하게는 브릿지 전극(30)과 동일한 소재로 형성될 수 있다. 그러한 경우에, 브릿지 전극(30)과 보조패턴(40)의 형성을 위해 각각 별도의 설비 및 공정을 요하지 않고, 동일 설비로 한 공정 내에서 동시에 형성할 수 있어, 공정 효율이 현저히 개선된다.The first and second auxiliary patterns 40 and 50 may be formed within the above-described line width, thickness, and material range, and preferably, may be formed of the same material as the bridge electrode 30. In such a case, separate equipment and processes are not required for the formation of the bridge electrode 30 and the auxiliary pattern 40, and they can be simultaneously formed in the same equipment in the same process, and the process efficiency is significantly improved.
또한, 상기 제1 보조패턴(40)은 인접한 2개의 브릿지 전극(30) 사이에서 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극(30) 쪽으로 치우치도록 형성할 수 있다. 도 7은 그러한 방법의 일 구현예에 따라 제조된 터치 감지 전극의 평면도이다.In addition, the first auxiliary pattern 40 may be separated into two or more unit patterns between two adjacent bridge electrodes 30, two of which may be biased toward the bridge electrode 30. 7 is a top view of a touch sensing electrode made according to one embodiment of such a method.
마찬가지로, 제2 보조패턴(50)은 인접한 2개의 브릿지 전극(30) 사이에서 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극(30) 쪽으로 치우치도록 형성할 수 있다.Similarly, the second auxiliary pattern 50 may be separated into two or more unit patterns between two adjacent bridge electrodes 30, two of which may be biased toward the bridge electrode 30.
제1 패턴(10)과 제2 패턴(20)은, 제2 패턴(20)을 제2 방향으로 전기적으로 연결하는 브릿지 전극(30)에 의해 절연체를 사이에 두고 서로 교차하게 되는데, 그러한 교차점에서 감지 패턴의 저항이 높아지므로, 상기와 같이 형성하는 경우 저항 감소 효과를 극대화 할 수 있다.The first pattern 10 and the second pattern 20 cross each other with an insulator interposed by a bridge electrode 30 that electrically connects the second pattern 20 in the second direction. Since the resistance of the sensing pattern is increased, the resistance reduction effect can be maximized when formed as described above.
이후에, 상기 브릿지 전극(30) 상에 절연체(60)를 형성한다.Thereafter, an insulator 60 is formed on the bridge electrode 30.
절연체(60)는 후술할 제1 패턴(10)을 브릿지 전극(30)과 전기적으로 절연시키는 역할을 한다.The insulator 60 serves to electrically insulate the first pattern 10 to be described later from the bridge electrode 30.
다음으로, 제1 방향으로 상기 제1 보조패턴을 덮도록 제1 패턴을 형성하고, 제2 방향으로 상기 제2 보조패턴을 덮도록 제2 패턴을 형성한다.Next, a first pattern is formed to cover the first auxiliary pattern in a first direction, and a second pattern is formed to cover the second auxiliary pattern in a second direction.
제1 패턴(10)은 브릿지 전극(30)과 절연되어야 하므로, 단위 패턴의 이음부가 절연체(60) 상부를 지나도록 형성된다.Since the first pattern 10 must be insulated from the bridge electrode 30, the joint of the unit pattern is formed to pass over the insulator 60.
브릿지 전극(30), 제1 및 제2 보조패턴(40,50) 및 절연체(60)의 형성 방법은 특별히 한정되지 않으며, 예를 들면 전술한 감지 패턴의 형성 방법으로 예시한 범위 내의 방법으로 형성될 수 있다.The method of forming the bridge electrode 30, the first and second auxiliary patterns 40 and 50, and the insulator 60 is not particularly limited, and is formed by a method within the range exemplified by the above-described sensing method. Can be.
<터치 스크린 패널 및 화상표시장치><Touch screen panel and image display device>
또한, 본 발명은 상기 터치 감지 전극 및 화소부를 포함하는 터치 스크린 패널을 제공한다.In addition, the present invention provides a touch screen panel including the touch sensing electrode and the pixel unit.
본 발명의 터치스크린 패널은 상기 터치 감지 전극 및 화소부 외에는 당 분야에서 통상적으로 사용되는 구성을 더 포함한다.The touch screen panel of the present invention further includes a configuration commonly used in the art, in addition to the touch sensing electrode and the pixel portion.
또한, 본 발명은 상기 터치스크린 패널을 포함하는 화상표시장치를 제공한다.In addition, the present invention provides an image display device including the touch screen panel.
이하, 본 발명의 이해를 돕기 위하여 바람직한 실시예를 제시하나, 이들 실시예는 본 발명을 예시하는 것일 뿐 첨부된 특허청구범위를 제한하는 것이 아니며, 본 발명의 범주 및 기술사상 범위 내에서 실시예에 대한 다양한 변경 및 수정이 가능함은 당업자에게 있어서 명백한 것이며, 이러한 변형 및 수정이 첨부된 특허청구범위에 속하는 것도 당연한 것이다.Hereinafter, preferred examples are provided to aid the understanding of the present invention, but these examples are merely illustrative of the present invention and are not intended to limit the scope of the appended claims, which are within the scope and spirit of the present invention. It is apparent to those skilled in the art that various changes and modifications can be made to the present invention, and such modifications and changes belong to the appended claims.
제조군 1 내지 7 Production group 1 to 7
유리(굴절률: 1.51, 소멸계수: 0) 기판 상에 ITO(굴절률: 1.8, 소멸계수: 0)로 제1 및 제2 패턴을 두께 20nm로 형성하였다.On the glass (refractive index: 1.51, extinction coefficient: 0) substrate, the 1st and 2nd patterns were formed by ITO (refractive index: 1.8, extinction coefficient: 0) in thickness of 20 nm.
이후에, 아크릴계 절연물질(굴절률: 1.51, 소멸계수: 0)로 제1 패턴의 단위 패턴의 이음부 상에 절연체를 형성하고, 절연체 상에 몰리브덴으로 단위 브릿지 전극의 선폭 8㎛, 두께 0.2㎛인 브릿지 전극을 형성하였다.Subsequently, an insulator is formed on the joint part of the unit pattern of the first pattern with an acrylic insulating material (refractive index: 1.51, extinction coefficient: 0), and the line bridge width of the unit bridge electrode is 8 µm and thickness is 0.2 µm with molybdenum on the insulator. A bridge electrode was formed.
그리고, 제1 패턴 및 제2 패턴 상에 하기 표 1에 기재된 선폭, 두께 및 길이를 가지는 보조 패턴을 형성하였다.And the auxiliary pattern which has the line | wire width, thickness, and length of the following Table 1 was formed on the 1st pattern and the 2nd pattern.
상기 브릿지 전극과 보조 패턴은 동일 공정 내에서 동시에 형성하였다.The bridge electrode and the auxiliary pattern were simultaneously formed in the same process.
보조패턴은 몰리브덴으로, 제1 패턴 상의 제1 보조패턴은 제1 패턴의 무게 중심을 지나도록, 제2 패턴 상의 제2 보조패턴은 그 연장선이 브릿지 전극의 무게 중심을 지나도록 터치 감지 전극을 형성하였다.The auxiliary pattern is molybdenum so that the first auxiliary pattern on the first pattern passes through the center of gravity of the first pattern, and the second auxiliary pattern on the second pattern forms a touch sensing electrode such that its extension line passes through the center of gravity of the bridge electrode. It was.
상기 굴절률과 소멸계수는 550nm 파장의 광을 기준으로 기재하였다.The refractive index and the extinction coefficient are described based on light of 550 nm wavelength.
표 1에 기재된 단위화소의 길이를 갖는 화소부에 상기 제조한 터치 감지 전극을 접합하여 터치 스크린 패널을 제조하였다.A touch screen panel was manufactured by bonding the above-described touch sensing electrode to the pixel portion having the length of the unit pixel shown in Table 1.
표 1
Figure PCTKR2014012997-appb-T000001
 Table 1
Figure PCTKR2014012997-appb-T000001
실험예Experimental Example
(1) Y값에 따른 단위 저항 및 투과율 측정(1) Unit resistance and transmittance measurement according to Y value
수학식 1에 P1, P1, P1 및 A값을 대입하여 제조군들의 Y값을 계산하고 그에 따른 단위 저항 및 투과율을 측정하여 얻은 그래프를 도 12 및 13에 나타내었다. 12 and 13 show graphs obtained by calculating Y values of manufacturing groups by substituting P1, P1, P1, and A values into Equation 1, and measuring unit resistance and transmittance.
1) 단위 저항 측정 1) Unit resistance measurement
전기 시뮬레이터(Q3D, Ansys)를 사용하여 제조군들의 단위화소 내 위치하는 감지 전극의 일단과 타단의 사이의 선저항을 산출하였다.An electric simulator (Q3D, Ansys) was used to calculate the line resistance between one end and the other end of the sensing electrode located in the unit pixel of the manufacturing groups.
Y값에 따른 단위 저항을 도 12 및 도 13에 도시하였다.Unit resistances according to Y values are illustrated in FIGS. 12 and 13.
2) 투과율 측정 2) transmittance measurement
헤이즈 미터(HM-150, 무라카미사)를 사용하여 제조군들의 터치 감지 전극의 전광선 투과율을 측정하였고, 유리 기판 대비 투과율을 계산하였다.The total light transmittance of the touch sensing electrodes of the manufacturing groups was measured using a haze meter (HM-150, Murakamisa), and the transmittance relative to the glass substrate was calculated.
Y값에 따른 투과율을 도 12 및 도 13 에 도시하였다.The transmittance according to the Y value is shown in FIGS. 12 and 13.
도 12 및 13을 참조하면, 제조된 제조군의 터치 스크린 패널은 Y값이 0.06 이하에서 급격히 작아지는 것을 확인 할 수 있었다. Y값이 0.06이상인 경우에 단위 저항이 현저하게 저하되어 이에 따라 터치 민감도가 현저히 향상될 것을 기대할 수 있고, Y값이 0.06 내지 0.135의 범위에서 우수한 투과율(90% 이상)을 나타내는 것을 확인할 수 있었다. 투과율이 90%이상이면 디스플레이의 밝기가 우수하다는 측면에서 바람직하다.12 and 13, it was confirmed that the touch screen panel of the manufactured manufacturing group rapidly decreases at a value of 0.06 or less. When the Y value was 0.06 or more, the unit resistance was significantly lowered, and thus, the touch sensitivity could be expected to be remarkably improved, and it was confirmed that the Y value exhibited excellent transmittance (90% or more) in the range of 0.06 to 0.135. If the transmittance is 90% or more, it is preferable in view of excellent brightness of the display.
구체적으로 도 12를 참조하면, Y값이 0.06 내지 0.135의 범위에서 단위저항은 제조군 1, 2,3 순으로 감소하여 제조군 3의 단위저항이 가장 작고, 투과율은 제조군 1,2,3 순으로 낮아져 제조군 1의 투과율이 가장 높음을 확인할 수 있었다.In detail, referring to FIG. 12, in the range of Y to 0.06 to 0.135, the unit resistance decreases in the order of manufacturing groups 1, 2, and 3, and the unit resistance of manufacturing group 3 is the smallest, and transmittance is manufacturing group 1,2,3. Lowering in order, it was confirmed that the transmittance of the manufacturing group 1 is the highest.
구체적으로 도 13을 참조하면, Y값이 0.06 내지 0.135의 범위에서 단위저항은 제조군 4,5,6,7 순으로 감소하여 제조군 7의 단위저항이 가장 작고, 투과율은 제조군 4,6,7,5 순으로 낮아져 제조군 4의 투과율이 가장 높음을 확인할 수 있었다.Specifically, referring to FIG. 13, in the range of Y value of 0.06 to 0.135, the unit resistance decreases in the order of manufacturing group 4, 5, 6, and 7, so that the unit resistance of manufacturing group 7 is the smallest, and transmittance is manufacturing group 4, 6 It was confirmed that the transmittance of manufacturing group 4 was the highest, in order of decreasing the order of 7,7.
그러나, 본 발명의 범위를 벗어나는 제조군의 터치 스크린 패널의 경우에는 단위 저항이 크거나 투과율이 우수하지 않음을 확인할 수 있었다. However, the touch screen panel of the manufacturing group outside the scope of the present invention was confirmed that the unit resistance is large or the transmittance is not excellent.
[부호의 설명][Description of the code]
1: 기판 10: 제1 패턴1: substrate 10: first pattern
20: 제2 패턴 30: 브릿지 전극20: second pattern 30: bridge electrode
40: 제1 보조패턴 50: 제2 보조패턴40: first auxiliary pattern 50: second auxiliary pattern
60: 절연체 70: 추가 보조 패턴60: insulator 70: additional auxiliary pattern
80: 단위화소 90: 화소부80: unit pixel 90: pixel portion

Claims (23)

  1. 터치 감지 전극 및 상기 터치 감지 전극 하부에 배치된 화소부를 포함하며,A touch sensing electrode and a pixel unit disposed under the touch sensing electrode,
    상기 터치 감지 전극은 제1 방향으로 형성된 제1 패턴 및 제2 방향으로 형성된 제2 패턴을 구비한 감지패턴;The touch sensing electrode may include a sensing pattern having a first pattern formed in a first direction and a second pattern formed in a second direction;
    상기 제2 패턴의 이격된 단위 패턴을 전기적으로 연결하는 브릿지 전극; 및A bridge electrode electrically connecting the spaced unit patterns of the second pattern; And
    상기 제1 패턴 및 제2 패턴 중 적어도 하나의 상부 또는 하부에 구비된 적어도 하나의 보조패턴;을 포함하고, And at least one auxiliary pattern provided above or below at least one of the first pattern and the second pattern.
    상기 화소부는 복수의 단위화소를 포함하고,The pixel unit includes a plurality of unit pixels,
    상기 보조패턴은 각각 하기 수학식 1을 만족하는, 터치 스크린 패널:Each of the auxiliary patterns satisfies Equation 1 below:
    [수학식 1][Equation 1]
    0.06 ≤ (P2/P1)* (P3/A)≤ 0.1350.06 ≤ (P2 / P1) * (P3 / A) ≤ 0.135
    (식 중에서, P1은 보조패턴의 선폭으로 0.01 내지 40㎛이며, P2는 보조패턴의 두께로 0.005 내지 20㎛이며, P3는 단위화소 상부 영역 내 보조패턴의 길이로 5 내지 500 ㎛이고, A는 단위화소의 길이임).(Wherein P1 is 0.01 to 40 µm in the width of the auxiliary pattern, P2 is 0.005 to 20 µm in the thickness of the auxiliary pattern, P3 is 5 to 500 µm as the length of the auxiliary pattern in the upper region of the unit pixel, and A is The length of the unit pixel).
  2. 청구항 1에 있어서, 상기 P1은 1 내지 30㎛인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein P1 is 1 to 30 μm.
  3. 청구항 1에 있어서, 상기 P2는 0.05 내지 1.5㎛인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein P2 is 0.05 to 1.5 μm.
  4. 청구항 1에 있어서, 상기 P3는 5 내지 400㎛인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein P3 is 5 to 400 μm.
  5. 청구항 1에 있어서, 상기 A는 20 내지 500㎛인, 터치 스크린 패널.The touch screen panel of claim 1, wherein A is 20 to 500 μm.
  6. 청구항 1에 있어서, 상기 P1은 1 내지 10㎛인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein P1 is 1 to 10 μm.
  7. 청구항 1에 있어서, 상기 P2는 0.1 내지 1.5㎛인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein the P 2 is 0.1 to 1.5 μm.
  8. 청구항 1에 있어서, 상기 P3는 10 내지 300㎛인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein the P3 is 10 to 300 μm.
  9. 청구항 1에 있어서, 상기 A는 20 내지 400㎛인, 터치 스크린 패널.The touch screen panel of claim 1, wherein A is 20 to 400 μm.
  10. 청구항 1에 있어서, P1은 1 내지 10㎛이고, P2는 0.1 내지 1.5㎛이고, P3는 10 내지 300㎛이고, A는 20 내지 400㎛인, 터치 스크린 패널.The touch screen panel according to claim 1, wherein P1 is 1 to 10 µm, P2 is 0.1 to 1.5 µm, P3 is 10 to 300 µm, and A is 20 to 400 µm.
  11. 청구항 1에 있어서, 상기 P3는 A와 동일하거나 큰 값을 갖는, 터치 스크린 패널.The touch screen panel of claim 1, wherein P3 has a value equal to or greater than A. 3.
  12. 청구항 1에 있어서, 상기 제1 패턴에 구비되는 제1 보조패턴은 제1 방향으로 형성되고, 상기 제2 패턴에 구비되는 제2 보조패턴은 제2 방향으로 형성되는, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein the first auxiliary pattern provided in the first pattern is formed in a first direction, and the second auxiliary pattern provided in the second pattern is formed in a second direction.
  13. 청구항 1에 있어서, 상기 제1 및 제2 보조패턴은 브릿지 전극과 동일한 소재로 형성되는, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein the first and second auxiliary patterns are formed of the same material as the bridge electrode.
  14. 청구항 1에 있어서, 상기 제1 패턴 및 제2 패턴의 단위 패턴은 면저항이 50 내지 500Ω/□인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein the unit patterns of the first pattern and the second pattern have a sheet resistance of 50 to 500 Ω / square.
  15. 청구항 12에 있어서, 상기 제2 보조패턴은 브릿지 전극과 연결되는, 터치 스크린 패널.The touch screen panel of claim 12, wherein the second auxiliary pattern is connected to a bridge electrode.
  16. 청구항 12에 있어서, 상기 제2 보조패턴은 브릿지 전극과 분리되는, 터치 스크린 패널.The touch screen panel of claim 12, wherein the second auxiliary pattern is separated from the bridge electrode.
  17. 청구항 12에 있어서, 제1 및 제2 보조패턴은 서로 독립적으로 1개 이상의 분리된 추가 보조 패턴을 더 구비한, 터치 스크린 패널.The touch screen panel of claim 12, wherein the first and second auxiliary patterns further include one or more separate additional auxiliary patterns independently of each other.
  18. 청구항 12에 있어서, 상기 제1 패턴의 단위 패턴 상부 또는 하부에서 제1 보조패턴은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극 쪽으로 치우치도록 위치한, 터치 스크린 패널.The touch screen panel as set forth in claim 12, wherein the first auxiliary pattern is divided into two or more unit patterns on the upper or lower part of the unit pattern of the first pattern, two of which are disposed to be biased toward the bridge electrode.
  19. 청구항 12에 있어서, 상기 제2 패턴의 단위 패턴 상부 또는 하부에서 제2 보조패턴은 2개 이상의 단위 패턴으로 분리되고, 이 중 2개는 브릿지 전극 쪽으로 치우치도록 위치한, 터치 스크린 패널.The touch screen panel as set forth in claim 12, wherein the second auxiliary pattern is divided into two or more unit patterns on the upper or lower part of the unit pattern of the second pattern, two of which are positioned to be biased toward the bridge electrode.
  20. 청구항 1에 있어서, 단위 브릿지 전극의 선폭이 1 내지 30㎛인, 터치 스크린 패널.The touch screen panel according to claim 1, wherein the line width of the unit bridge electrodes is 1 to 30 μm.
  21. 청구항 1에 있어서, 상기 브릿지 전극은 두께가 0.05 내지 1.5㎛인, 터치 스크린 패널.The touch screen panel as set forth in claim 1, wherein the bridge electrode has a thickness of 0.05 to 1.5 μm.
  22. 청구항 1에 있어서, 상기 브릿지 전극은 몰리브덴, 은, 알루미늄, 구리, 팔라듐, 금, 백금, 아연, 주석, 티타늄 또는 이들의 합금으로 제조된, 터치 스크린 패널.The touch screen panel of claim 1, wherein the bridge electrode is made of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium, or an alloy thereof.
  23. 청구항 1 내지 22 중 어느 한 항의 터치 스크린 패널을 포함하는 화상 표시 장치.An image display device comprising the touch screen panel of claim 1.
PCT/KR2014/012997 2013-12-30 2014-12-29 Touch screen panel WO2015102349A1 (en)

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WO2010002202A2 (en) * 2008-07-04 2010-01-07 Ahn Young Soo Capacitive touch panel device of a high-sensitivity digital system
KR20110095669A (en) * 2010-02-19 2011-08-25 (주)삼원에스티 Touch panel sensor including low resistant line pattern
US20110290547A1 (en) * 2010-05-28 2011-12-01 Chimei Innolux Corporation Electrode structure of multiple dielectric island layer and manufacturing method thereof
US20130201348A1 (en) * 2012-02-08 2013-08-08 Wintek Corporation Capacitive touch panel

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WO2010002202A2 (en) * 2008-07-04 2010-01-07 Ahn Young Soo Capacitive touch panel device of a high-sensitivity digital system
KR20110095669A (en) * 2010-02-19 2011-08-25 (주)삼원에스티 Touch panel sensor including low resistant line pattern
US20110290547A1 (en) * 2010-05-28 2011-12-01 Chimei Innolux Corporation Electrode structure of multiple dielectric island layer and manufacturing method thereof
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