WO2015093643A1 - Touch panel sensor - Google Patents

Touch panel sensor Download PDF

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Publication number
WO2015093643A1
WO2015093643A1 PCT/KR2013/011791 KR2013011791W WO2015093643A1 WO 2015093643 A1 WO2015093643 A1 WO 2015093643A1 KR 2013011791 W KR2013011791 W KR 2013011791W WO 2015093643 A1 WO2015093643 A1 WO 2015093643A1
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WO
WIPO (PCT)
Prior art keywords
electrode pattern
transparent electrode
metal
insulating substrate
touch panel
Prior art date
Application number
PCT/KR2013/011791
Other languages
French (fr)
Korean (ko)
Inventor
박철
신용철
Original Assignee
(주)삼원에스티
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
Application filed by (주)삼원에스티 filed Critical (주)삼원에스티
Priority to PCT/KR2013/011791 priority Critical patent/WO2015093643A1/en
Publication of WO2015093643A1 publication Critical patent/WO2015093643A1/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
    • 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
    • G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material

Definitions

  • the present invention relates to a touch panel sensor for sensing a contact position of an object.
  • FIG. 1 is a perspective view illustrating a conventional mutual touch panel sensor.
  • the lower insulating sheet 10 and the upper insulating sheet 20 are bonded at predetermined intervals, or in some cases, a transparent optical adhesive film is interposed between the sheets.
  • the lower ITO electrode 30 and the upper ITO electrode 40 are vertically arranged on the opposite surfaces of the lower insulating sheet 10 and the upper insulating sheet 20, and specifically, the lower ITO electrode 30 is The upper surface of the lower insulating sheet 10 is oriented from left to right, and the upper ITO electrode 40 is oriented from the upper side to the lower side on the bottom surface of the upper insulating sheet 20.
  • the touch panel sensor 1 has a predetermined capacitance, that is, a capacitance value, corresponding to the area of each intersection at each intersection of the lower ITO electrode 10 and the upper ITO electrode 20 arranged to cross each other.
  • a capacitance value corresponding to the area of each intersection at each intersection of the lower ITO electrode 10 and the upper ITO electrode 20 arranged to cross each other.
  • the capacitance of the body part may be changed by adding the area of the body part to the area of the upper ITO electrode 20 disposed above.
  • the lower ITO electrode 30 may be used as a transmitter line that is intermittently provided with a current.
  • the upper ITO electrode 20 is provided with current to the lower ITO electrode 30, a part of the body approaches. It can be used as a receiver electrode for measuring the difference between the output signal, that is, the current value generated by the change in the capacitance value of the lower ITO electrode 30 and the upper ITO electrode 40 changed depending on the presence or absence.
  • the role of the lower and upper ITO electrodes is not determined, and in some cases, may play the opposite role.
  • a method of detecting a contact position of a part of a body by detecting a change in an output signal that is changed is a mutual method.
  • a mutual capacitance touch sensing method it is referred to as a mutual capacitance touch sensing method.
  • the upper ITO electrode 40 may be adjusted so that the input signal or the output signal that is intermittently transmitted has a resistance value that can be sufficiently transmitted to an external controller.
  • the controller inputs an input signal to either the lower ITO electrode 30 or the upper ITO electrode 40, and detects a contact position of a part of the body using the output signal output to the other side.
  • the width of the upper ITO electrode 40 is formed to be narrower than the lower ITO electrode 30 so that a change in capacitance value occurs at an intersection point, a rapid increase in resistance may occur as the length thereof becomes longer. As a result, it is difficult to lengthen the upper ITO electrode 40, thereby limiting the total area of the touch panel sensor 1.
  • the thickness of the ITO can be increased in order to lower the resistance of the ITO, but in this case, there is a problem in that the transmittance is lowered. Big problems can arise.
  • the width of the upper ITO electrode 40 is increased to reduce the resistance value, the width of the upper ITO electrode 40 is limited in consideration of the occurrence of the change in the capacitance value generated by interacting with the lower ITO electrode 30. There is a restriction that cannot be made wider than the width of the electrode 30. Furthermore, when the width is widened, a problem that is visible from the outside may occur.
  • the ITO and IZO used for manufacturing the transparent electrode of the touch panel sensor 1 are higher in resistance than the metal, the ITO and IZO are generated by the input signal provided to the touch panel sensor 1 and the changed capacitance value.
  • the sensitivity of the touch panel sensor 1 may be greatly reduced by the loss of the output signal.
  • the present invention provides a touch panel sensor that can overcome the limitation that the area of the touch panel sensor is limited by the increase in the resistance value according to the increase in the length of the electrode disposed in the touch panel sensor.
  • the present invention provides a touch panel sensor that can improve touch error, touch feeling, and touch efficiency limited by structural limitations of a conventional touch panel sensor having electrodes crossing each other up and down.
  • a touch panel sensor placed on a display and detecting a contact position of an object is disposed to be electrically separated from a transparent electrode pattern provided in a line and a transparent electrode pattern, and the transparent electrode It may include a metal electrode pattern of the mesh (mesh) provided to cross the pattern.
  • a transparent electrode pattern using a conductive ceramic, such as ITO is used as the lower electrode that is disposed to cross each other and induces a change in capacitance. Since the limit of is less than that of the conventional upper electrode using ITO, it is relatively free from the limitation of the total area of the touch panel sensor.
  • the metal electrode pattern may be provided with a width that is relatively free to increase the length even if it is thin, so that it is not visible from the outside (a width of about 100 ⁇ m or less). It is provided in a (mesh) shape, so it is hard to check with the naked eye from the outside.
  • the metal electrode pattern not having a mesh shape is at least 50 ⁇ m or less in width, and it is hard to see the naked eye.
  • the metal electrode pattern on the mesh is slightly wider than the metal electrode pattern without a mesh shape. Even if it grows, it is not visually confirmed. This is because fine metal wires of about 0.5 to 1 ⁇ m entangled with each other serve to scatter light.
  • the transparent electrode pattern and the metal electrode pattern described above may be disposed within a range intersecting each other, and the touch panel sensor includes a lower insulating substrate on the display and an upper insulating substrate disposed on the lower insulating substrate.
  • the transparent electrode pattern and the metal electrode pattern may be disposed on one surface of the lower insulating substrate and the upper insulating substrate, respectively, wherein the 'one surface' may include both an upper surface and a lower surface.
  • the transparent electrode pattern is disposed on the upper surface of the lower insulating substrate
  • the metal electrode pattern is preferably disposed on the bottom surface of the upper insulating substrate.
  • the transparent electrode pattern and the metal electrode pattern may be disposed on the bottom and top surfaces, respectively.
  • the transparent electrode pattern and the metal electrode pattern may be disposed on any one surface, and both the transparent electrode pattern and the metal electrode pattern may be disposed on the upper surface.
  • an insulating pattern may be disposed at a portion where the positive electrode patterns cross each other to electrically short the positive electrode patterns.
  • the touch panel sensor may be provided on an upper surface of the transparent electrode pattern, and may include a low resistance electrode pattern having a metal mesh having a lower specific resistance than the transparent electrode pattern.
  • Low-resistance electrode patterns include PEDOT (polyethylenedioxythiophene), silver nanowires, indium tin oxide (ITO), indium zinc oxide (IZO), al-doped tin oxide (ATO), al-doped zinc oxide (AZO), and carbon
  • PEDOT polyethylenedioxythiophene
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ATO al-doped tin oxide
  • AZO al-doped zinc oxide
  • the conductivity of the transparent electrode pattern which may include any one of the nanotubes (CNT) may be improved.
  • the dummy electrode pattern may include a dummy electrode pattern disposed between the transparent electrode pattern and the metal electrode pattern and having a mesh shape of a metal that is electrically separated from the transparent electrode pattern and the metal electrode pattern.
  • the dummy electrode pattern may be formed of the same material as the metal electrode pattern or another metal or alloy material, and may be formed in an area where the transparent electrode pattern or the metal electrode pattern is not formed on the upper surface of the lower insulating substrate.
  • the dummy electrode pattern can keep the signal sensitivity almost the same without variation.
  • the sensitivity of the signal can be greatly improved.
  • the dummy between the metal electrode pattern and the transparent electrode pattern When the electrode pattern is formed, the improved signal sensitivity can be measured with almost the same sensitivity without deviation.
  • Measuring the signal sensitivity without deviation means that the program can quickly and accurately determine the contact with the body, which may mean that the program speed and touch sensitivity are improved.
  • the upper insulating substrate may be further disposed on the lower insulating substrate to protect both electrode patterns.
  • an optical adhesive layer for bonding two insulating substrates to each other may be used between the lower insulating substrate and the upper insulating substrate.
  • the optical adhesive layer may have a light diffusion function.
  • the contour of the metal electrode pattern may be prevented from being visible from the outside by light emitted from the display disposed under the touch panel sensor.
  • a low resistance electrode pattern having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern may be disposed on the upper surface of the transparent electrode pattern.
  • the dummy electrode pattern having a mesh shape of a metal electrically separated from the transparent electrode pattern and the metal electrode pattern may be disposed between the transparent electrode pattern and the metal electrode pattern.
  • the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern are provided on the transparent electrode pattern for the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern after providing the transparent electrode pattern on the upper surface of the lower insulating substrate.
  • the laminated metal layers can be patterned at one time.
  • the metal layer may be formed using at least one of copper / titanium (Cu / Ti), molybdenum (Mo), chromium (Cr), and black chromium (Black Chrome), and copper / titanium, molybdenum, and chromium.
  • the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern provided with a metal capable of preventing reflection of light or dark color, such as, and black chrome, may be prevented from shining externally.
  • the transparent electrode pattern may include a plurality of extension portions provided in a line and a plurality of bridge portions connecting the plurality of extension portions, and the metal electrode pattern may include crossing portions disposed across the extension portions.
  • opposite edges between the extensions adjacent to each other may be parallel to each other, and the intersection may have a constant width in the longitudinal direction of the intersection, and the edge along the longitudinal direction of the intersection and the edge of the extension may be parallel to each other.
  • the transmitter electrode pattern of the touch panel sensor and the outer edge of the receiver electrode pattern pass as close as possible, so that the change in the electric field may be larger than when using the conventional upper and lower ITO electrodes having a simple straight structure.
  • it induces a more active capacitance change, increases the sensitivity of the touch panel sensor, and reduces the touch error to near 0%.
  • the metal electrode pattern may be provided in the form of grouped parallel lines in which at least one of the upper and lower ends of two or more intersections adjacent to each other is electrically connected.
  • a method of manufacturing a touch panel sensor which is placed on a display and senses a contact position of an object, provides a transparent electrode pattern by patterning a transparent electrode layer provided on one surface of a lower insulating substrate. Step, patterning the insulating layer provided on the transparent electrode pattern to provide an insulating pattern, and patterning a metal layer provided on the transparent electrode pattern and electrically separated from the transparent electrode pattern by the insulating pattern, and the transparent electrode pattern and It may include providing a metal electrode pattern of the mesh shape provided to cross.
  • the metal layer provided on the upper surface of the transparent electrode pattern may be patterned into a low resistance electrode pattern having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern.
  • the metal layer disposed between the transparent electrode pattern and the metal electrode pattern may be patterned into a dummy electrode pattern having a mesh shape of metal electrically separated from the transparent electrode pattern and the metal electrode pattern.
  • a low resistance electrode pattern provided on an upper surface of the transparent electrode pattern and having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern, and disposed between the transparent electrode pattern and the metal electrode pattern to be electrically connected to the transparent electrode pattern and the metal electrode pattern.
  • the dummy electrode pattern may have a mesh shape of a metal separated by the metal, and the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern may be provided at a time by patterning a metal layer.
  • a transparent electrode pattern using a conductive ceramic, such as ITO is used as the lower electrode that is disposed to cross each other and induces a change in capacitance. Since the limit of is less than that of the conventional upper electrode using ITO, it is relatively free from the limitation of the total area of the touch panel sensor.
  • the metal electrode pattern is relatively free to increase the length even if it is thin can be provided in a width that is not visible from the outside, moreover, the metal electrode pattern according to the present invention is provided in a mesh (mesh) shape to the naked eye from the outside Not well checked
  • the transparent electrode pattern or the metal electrode pattern may be disposed on the upper surface of the lower insulating substrate, and the upper insulating substrate for protecting both electrode patterns may be bonded to the lower insulating substrate by using an optical adhesive layer.
  • the optical adhesive layer having a light diffusion function it is possible to prevent the contour of the metal electrode pattern from being visible from the outside by the light irradiated from the display.
  • the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern may be formed on the upper surface of the lower insulating substrate.
  • Metal layers for the electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern may be patterned and provided at a time.
  • the touch panel sensor according to the present invention crosses the transparent electrode pattern and the metal electrode pattern.
  • the transparent electrode pattern is not a simple linear shape but has a different width and the extension portion connecting the bridge portion, and by placing the metal electrode pattern across the bridge portion, to reduce the touch error that is limited in the prior art, Alternatively, the touch efficiency can be greatly improved.
  • the touch panel sensor of the present invention allows the outer edges of the transparent electrode pattern and the metal electrode pattern to pass as close as possible, so that the change in the electric field may be greater than when using the conventional upper and lower ITO electrodes having a simple straight structure. By inducing a change in the capacitance which is more active, the sensitivity of the touch panel sensor is further increased, and the touch error can be reduced to near 0%.
  • the metal electrode pattern is provided in a grouped parallel line shape in which at least one side of the upper and lower ends of two or more intersections adjacent to each other is electrically connected, thereby reducing the electric field than the conventional upper ITO electrode. Induce a large change, thereby further increasing the sensitivity of the touch panel sensor.
  • a control unit having fewer leads than the total number of intersections may be used by tying several intersections together while greatly increasing the number of intersections to improve sensitivity.
  • FIG. 1 is a perspective view illustrating a conventional mutual touch panel sensor.
  • FIG. 2 is an exploded perspective view of a touch panel sensor according to an exemplary embodiment of the present invention.
  • FIG 3 is an exploded perspective view of a touch panel sensor according to another exemplary embodiment of the present invention.
  • FIG. 4 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate.
  • FIG. 5 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate in a touch panel sensor according to another exemplary embodiment of the present invention.
  • FIG. 6 is a front view of a lower insulating substrate of a touch panel sensor according to another exemplary embodiment of the present invention.
  • FIG. 7 is a front view of an upper insulating substrate of a touch panel sensor according to another embodiment of the present invention.
  • the touch panel sensor 100 includes a lower insulating substrate 110, a transparent electrode pattern 120, an upper insulating substrate 130, a metal electrode pattern 140, and an optical adhesive layer 150. .
  • the touch panel sensor 100 may detect this when the user touches the touch panel sensor 100, and since the touch panel sensor 100 is positioned on the upper portion of the display, the lower insulation substrate 110, the transparent electrode pattern 120, and the upper insulation are basically provided.
  • the substrate 130, the metal electrode pattern 140, and the optical adhesive layer 150 should not obstruct the backside display.
  • the lower insulating substrate 110 is disposed on the upper portion of the display, and the upper insulating substrate 130 is bonded through the lower insulating substrate 110 and the optical adhesive layer 150, and is transparent by the insulating optical adhesive layer 150.
  • the metal electrode patterns 120 and 140 are electrically shorted to each other.
  • the optical adhesive layer 150 may use an optical adhesive film or an optically clear adhesive (OCA) film, and may optically bond the lower insulating substrate 110 and the upper insulating substrate 130 to each other.
  • OCA optically clear adhesive
  • the plurality of transparent electrode patterns 120 are arranged side by side in one direction on the upper surface of the lower insulating substrate 110, and the metal electrode patterns 140 are disposed on the lower surface of the upper insulating substrate 130.
  • the plurality is arranged side by side to intersect.
  • the metal electrode pattern 140 is relatively smaller than the width of the transparent electrode pattern 120, when a part of the body approaches the metal electrode pattern 140 positioned on the transparent electrode pattern 120, the transparent electrode pattern 120 ) And a change in capacitance value formed at the intersection of the metal electrode pattern 140 and the touch panel sensor 100 may check the change and calculate the touch position.
  • a transparent electrode pattern 120 using a conductive ceramic such as ITO is used as a lower electrode intersecting each other to induce a capacitance change, but the metal electrode pattern ( By using 140, the length limit is less than that of the conventional upper electrode using ITO, which makes it relatively free from the limitation of the total area of the touch panel sensor.
  • the metal electrode pattern 140 may be provided with a width that is relatively free to increase the length even if it is thin, so that it is not visible from the outside (a width of about 100 ⁇ m or less), and furthermore, the metal electrode according to the present invention.
  • the pattern 140 is provided in a mesh shape and is hardly visually recognized from the outside.
  • the metal electrode pattern 140 that does not have a mesh shape may not be visually confirmed when the width of the metal electrode pattern 140 is at least 50 ⁇ m or less, but the metal electrode pattern 140 that has a mesh shape does not have a mesh shape. Compared with, even if the width is slightly larger, it is not visually confirmed. This is because the fine metal wires 142 having a thickness of about 0.5 to 1 ⁇ m entangled with each other serve to scatter light.
  • the transparent electrode pattern 120 and the metal electrode pattern 140 are electrically connected through a connecting line made of a metal material connecting the ends and the external control unit, and are covered by window decoration described in detail in the following embodiments. Can lose.
  • a method of forming the transparent electrode pattern 120 and the metal electrode pattern 140 will be described.
  • a transparent electrode layer for the transparent electrode pattern 120 may be applied to the entire lower insulating substrate 110, and may be formed by patterning the transparent electrode pattern 120. do.
  • the metal electrode pattern 140 may also be provided through the above-described patterning process, and in some cases, a method of mixing and printing a metal powder with a curing agent may be used.
  • FIG. 3 is an exploded perspective view of a touch panel sensor according to another exemplary embodiment of the present invention
  • FIG. 4 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate.
  • the touch panel sensor 200 may include a lower insulating substrate 210, a transparent electrode pattern 220, an insulating pattern 270, a metal electrode pattern 240, an optical adhesive layer 250, and The upper insulating substrate 230 is included.
  • the upper insulating substrate 230 is placed on the uppermost layer of the sensor to directly touch the user, and it is preferable to use tempered glass as a material having high surface strength, and the lower insulating substrate 210 may be ordinary glass. Of course, it is also possible to use reinforced plastics for both insulating substrates.
  • the transparent electrode pattern 220 and the metal electrode pattern 240 may be disposed to cross each other on the upper surface of the lower insulating substrate 210.
  • the transparent electrode pattern 220 is disposed on the upper surface of the lower insulating substrate 210.
  • the insulating pattern 270 may be disposed at a portion where the transparent electrode pattern 220 and the metal electrode pattern 240 cross each other. Thereafter, the metal electrode pattern 240 may be disposed.
  • the transparent electrode pattern 220 may serve as a transmitter electrode, and the metal electrode pattern 240 may serve as a receiver electrode.
  • the transparent electrode pattern 220 may be manufactured using ITO or IZO, ATO, AZO, carbon nanotube, etc., which have both light transmittance and conductivity, and the metal electrode pattern 240 may be provided in a mesh shape using a metal material. have.
  • a separate cover needs to be provided on the lower insulating substrate 210 because both the transparent electrode pattern 220 and the metal electrode pattern 240 are disposed on the upper surface of the lower insulating substrate 210.
  • the upper insulating substrate 230 is disposed on the lower insulating substrate 210.
  • the upper insulating substrate 230 may be bonded to the lower insulating substrate 210 through the optical adhesive layer 250, and the optical adhesive layer 250 may be used to bond the lower insulating substrate 210 and the upper insulating substrate 230.
  • An optical adhesive film or an OCA film can be used.
  • the optical adhesive layer 250 is optically transmissive, but in this embodiment, by using the optical adhesive layer 250 having a light diffusing function, the contour of the metal electrode pattern 240 is externalized by the light emitted from the display. Can be prevented from
  • a window decoration 232 is provided on the bottom of the upper insulating substrate 230 along its edge, and the window decoration 232 corresponds to the periphery of the center touch area and is formed of a wire pattern 212 using silver paste. ) To block visually. 3, the transparent electrode pattern 220 and the metal electrode pattern 240 may be electrically connected to the flexible circuit board 260 by the wire pattern 212.
  • the configuration of the touch panel sensor 200 according to the present embodiment has been described above, and the detailed shapes and effects of the transparent electrode pattern 220 and the metal electrode pattern 240 will be described below.
  • the transparent electrode pattern 220 is disposed to be electrically separated from the metal electrode pattern 240 by the insulating pattern 270, and specifically, the transparent electrode pattern 220 is in one direction. It includes a plurality of expansion portion 222 and a plurality of bridge portion 224 connecting between the plurality of expansion portion 222 provided in a line, is provided on the upper surface of the lower insulating substrate (210).
  • the metal electrode pattern 240 includes a plurality of crossing portions 241 which are provided in a line perpendicular to one direction across the expansion portions 222 and are provided on an upper surface of the lower insulating substrate 210.
  • the transparent electrode pattern 220 and the metal electrode pattern 240 is a design choice which is disposed above the intersection point, in this embodiment the transparent electrode pattern 220 is below the insulating pattern 270 at the intersection point. It is described as an example.
  • the extension part 222 of the transparent electrode pattern 220 is formed to have a relatively or significantly wider width than the bridge part 224, and the bridge part 224 is the extension part 222.
  • the bridge part 224 is the extension part 222.
  • the touch error, the touch feeling, or the touch efficiency are greatly limited by the area where two electrodes arranged up and down cross each other.
  • the transparent electrode pattern 220 and the metal are up and down.
  • the electrode pattern 240 is disposed, but the transparent electrode pattern 220 is not a simple linear shape, but has extension portions 222 having different widths and bridge portions 224 connecting them, and the metal electrode pattern 240.
  • the cross between the bridge portion 224 it is possible to reduce the touch error, which is limited in the prior art, and greatly improve the sense of touch or touch efficiency.
  • the area in which the two electrodes arranged up and down intersect with each other does not vary significantly, but the electrode structure according to the present invention greatly changes the capacitance value even though the electrode structure according to the present invention has the same crossing area. It can be derived, and will be described in detail below.
  • the conventional touch panel sensor having a simple linear structure electrode or a touch panel sensor having a transparent electrode pattern and a metal electrode pattern of the present invention are common parts.
  • the change in the capacitance value does not occur only at the portion where the two electrodes disposed completely up and down overlap, but also occurs between the transparent electrode pattern 220 and the metal electrode pattern 240 adjacent to each other.
  • the bridge portion 224 of the transparent electrode pattern 220 and the metal electrode pattern 240 overlap the expansion portion 222 in addition to the intersecting areas that are completely overlapped with each other.
  • a change in electric field that is, a change in capacitance value, occurs between the crossing portions 241 passing adjacent to the bridge portion 224 adjacently.
  • the change in the electric field is greater than in the case of using the conventional upper and lower ITO electrodes having a simple straight structure. Can be.
  • the transparent electrode pattern 220 and the metal electrode pattern 240 are not provided in a simple straight structure, but the width is widened and narrowed to provide the transparent electrode pattern 220, and a bridge having a narrow width. It is further activated by providing a metal electrode pattern 240 so as to form an intersecting area over the portions 224, and simultaneously placing the metal electrode pattern 240 and the side of the extension 222 of the transparent electrode pattern 220 in close proximity. It can lead to a change in capacitance.
  • the sensitivity of the touch panel sensor 200 can be further increased by activating a change in capacitance, and in fact, the sensitivity of the touch panel sensor 200 can be confirmed to increase.
  • the touch panel sensor 200 having the electrode structure of the present invention can improve the sensitivity and reduce the touch error to near 0%.
  • the crossing portion 241 of the metal electrode pattern 240 may be provided with a constant width in the longitudinal direction, so that the opposite edges between the adjacent extension portions 222 are parallel to each other, the intersection An edge along the longitudinal direction of the portion 241 and an edge of the extension 222 may be provided in parallel with each other.
  • the touch efficiency is not simply controlled by the crossing area, but the intersecting electrodes are not overlapped, but the electrode structure is provided to be as close to each other as possible and to increase the length adjacent to each other, thereby making the touch error close to 0%.
  • FIG. 5 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate in a touch panel sensor according to another exemplary embodiment of the present invention.
  • the basic configuration according to the present embodiment can refer to the description and the drawings of the previous embodiment, in the present embodiment will be described with respect to the metal electrode pattern which is different from the previous embodiment.
  • the metal electrode pattern 340 may be provided in a grouped parallel line shape in which at least one of upper and lower ends of two or more intersections 341 adjacent to each other is electrically connected. The upper and lower ends of the three intersections 341 are connected.
  • crossings 341 of the multiple strands are provided in an electrically connected state at the same unit interval, and the extension portion 322 and the bridge portion 324 where each intersection portion 341 is disposed thereunder are provided.
  • the finger end when the finger is positioned adjacent to the upper part of the touch panel sensor, the finger end also forms a capacitance, and the capacitance of the plurality of transparent intersections 341 and the transparent electrode pattern 320 is changed.
  • the change in electric field may be larger than in the case of use.
  • the metal electrode pattern having a grouped parallel line shape By using the metal electrode pattern having a grouped parallel line shape through this it is possible to induce a change in the more active capacitance, it is possible to further increase the sensitivity of the touch panel sensor by activating the change in capacitance.
  • the number of the intersections 341 increases to 18, which is larger than the six of the previous embodiment, so that the area of the intersection between the intersections 341 and the bridge 324 is increased.
  • the length of the side edge of the intersection 341 disposed adjacent to the side edge of the extension 322 also increases significantly. Therefore, the sensitivity of the touch panel sensor can be greatly increased.
  • a control unit having fewer leads than the total number of the intersections 341 may be used by tying three intersections 341 in a pair while greatly increasing the number of the intersections 341.
  • one wire is connected to each of the crossing portions 341 and the capacitive sensor chip from the end of each crossing portion 341 so as to electrically connect the capacitive sensor chips that can be used as the controller. It is connected through the connecting line.
  • the number of the intersections 341 of the present embodiment is larger than that of the previous embodiment.
  • the same capacitive sensor chip as in the previous embodiments can be used.
  • FIG. 6 is a front view of a lower insulating substrate of a touch panel sensor according to another exemplary embodiment of the present invention.
  • the basic configuration according to the present embodiment can refer to the description and the drawings of the previous embodiment, in this embodiment, the low resistance electrode pattern and dummy that is different from the touch panel sensor shown in the drawings of Figures 3 and 4 It demonstrates centering on an electrode pattern.
  • the transparent electrode pattern 420 including the extension part 422 and the bridge part 424, the insulating pattern 480, and the metal electrode pattern 440 are sequentially disposed on the upper surface of the lower insulating substrate of the touch panel sensor of the present embodiment. do.
  • a low resistance electrode pattern 470 having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern 420 is provided on the top surface of the transparent electrode pattern 420.
  • the low resistance electrode pattern 470 may improve conductivity of the transparent electrode pattern 420.
  • the low resistance electrode pattern 470 extends to the upper portion of the insulating pattern 480 via the upper portion of the transparent portion 422 and the bridge portion 424 of the transparent electrode pattern 420. Not all of the low resistance electrode patterns 470 are formed on the upper surface of the bridge portion 424, which prevents the transparent electrode pattern 420 and the dummy electrode pattern 490 from being electrically connected through the low resistance electrode patterns 470. For that.
  • a dummy electrode pattern 490 having a mesh shape of a metal electrically separated from the transparent electrode pattern 420 and the metal electrode pattern 440 is disposed between the transparent electrode pattern 420 and the metal electrode pattern 440. do.
  • the dummy electrode pattern 490 may be formed of the same material as the metal electrode pattern 440 or a different metal or alloy material, and the transparent electrode pattern 420 or the metal electrode pattern 440 may be formed on the upper surface of the lower insulating substrate 410. It is formed in the non-formed area, and a part of it is also formed on the insulating pattern 480 within a range capable of maintaining insulation with the transparent electrode pattern 420 or the metal electrode pattern 440.
  • a space in an area in which the optically transparent electrode pattern 420 or the metal electrode pattern 440 is not formed may be compensated for, and the light may be prevented from being distorted.
  • a transparent electrode layer for the transparent electrode pattern 420 may be formed on the entire surface of the lower insulating substrate. Thereafter, a transparent electrode pattern 420 having a desired pattern may be obtained through a photolithography process using a photosensitive film.
  • an insulating layer for the insulating pattern 480 is formed on the entire surface of the lower insulating substrate so that the transparent electrode pattern 420 and the metal electrode pattern 440 are not electrically connected to each other.
  • an insulating pattern 480 may be obtained by patterning the insulating layer.
  • a metal layer for the metal electrode pattern 440 is provided over the entire upper surface of the lower insulating substrate 410, and patterned to obtain a mesh metal electrode pattern 440.
  • the dummy electrode pattern 490 may be provided together.
  • FIG. 7 is a front view of an upper insulating substrate of a touch panel sensor according to another embodiment of the present invention.
  • the description of the basic components according to the present embodiment may refer to the description of the foregoing embodiment described with reference to FIG. 2, which is different from the touch panel sensor illustrated in FIG. 2.
  • the dummy electrode pattern is described.
  • the touch panel sensor 500 includes a lower insulating substrate 510, a transparent electrode pattern 520, an upper insulating substrate 530, a metal electrode pattern 540, and an optical adhesive layer 550.
  • the dummy electrode pattern 590 is disposed between the metal electrode patterns 540 having a width narrower than that of the transparent electrode patterns 520.
  • the dummy electrode pattern 590 may be formed of the same material as the metal electrode pattern 540 or a different metal or alloy material, and may be formed to be electrically separated from the metal electrode pattern 540.
  • the touch panel sensor according to the present invention can be widely applied to a display for the purpose of detecting a contact position of an object.

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Abstract

A touch panel sensor, disposed on a display, for sensing a contact position of an object may comprise: a transparent electrode pattern provided in a line; and a metal electrode pattern having a mesh shape, arranged so as to be electrically separated from the transparent electrode pattern, and provided so as to intersect with the transparent electrode pattern.

Description

터치패널센서Touch panel sensor
본 발명은 피대상물의 접촉 위치를 감지하기 위한 터치패널센서에 관한 것이다.The present invention relates to a touch panel sensor for sensing a contact position of an object.
도 1은 종래의 뮤츄얼 방식의 터치패널센서를 설명하기 위한 사시도이다.1 is a perspective view illustrating a conventional mutual touch panel sensor.
도 1을 참조하면, 종래의 터치패널센서(1)는 하부 절연시트(10) 및 상부 절연시트(20)가 소정 간격 이격되어 접합되거나, 경우에 따라서, 양 시트 사이에 투명한 광학접착필름이 개재될 수 있다. 하부 절연시트(10) 및 상부 절연시트(20)의 마주보는 면에는 각각 하부 ITO전극(30)과 상부 ITO전극(40)이 상호 수직하게 배열되어 있으며, 구체적으로, 하부 ITO전극(30)은 하부 절연시트(10)의 상면에 좌측에서 우측으로 배향되어 있으며, 상부 ITO전극(40)은 상부 절연시트(20)의 저면에 상측에서 하측으로 배향되어 있다.Referring to FIG. 1, in the conventional touch panel sensor 1, the lower insulating sheet 10 and the upper insulating sheet 20 are bonded at predetermined intervals, or in some cases, a transparent optical adhesive film is interposed between the sheets. Can be. The lower ITO electrode 30 and the upper ITO electrode 40 are vertically arranged on the opposite surfaces of the lower insulating sheet 10 and the upper insulating sheet 20, and specifically, the lower ITO electrode 30 is The upper surface of the lower insulating sheet 10 is oriented from left to right, and the upper ITO electrode 40 is oriented from the upper side to the lower side on the bottom surface of the upper insulating sheet 20.
상술한 터치패널센서(1)는 상호 교차하도록 배치되는 하부 ITO전극(10) 및 상부 ITO전극(20)의 각 교차지점마다 각 교차지점의 면적에 대응하는 소정의 정전 용량 즉, 커패시턴스 값이 존재하는데, 신체 일부가 근접하면 상부에 배치된 상부 ITO전극(20)의 면적에 신체 일부의 면적이 더해져 커패시턴스 값이 변경될 수 있다. The touch panel sensor 1 has a predetermined capacitance, that is, a capacitance value, corresponding to the area of each intersection at each intersection of the lower ITO electrode 10 and the upper ITO electrode 20 arranged to cross each other. When the body part is close, the capacitance of the body part may be changed by adding the area of the body part to the area of the upper ITO electrode 20 disposed above.
이때, 하부 ITO전극(30)은 간헐적으로 전류가 제공되는 트랜스미터 전극(transmitter line)으로 사용될 수 있으며, 상부 ITO전극(20)은 하부 ITO전극(30)으로 전류가 제공될 때, 신체 일부의 접근 유무에 의해서 변경되는 하부 ITO전극(30)과 상부 ITO전극(40)의 커패시턴스 값의 변화에 의해서 발생하는 출력 신호 즉, 전류 값의 차이를 측정하는 리시버 전극(receiver line)으로 사용될 수 있다. 물론, 하부 및 상부 ITO전극의 역할이 정해진 것은 아니며, 경우에 따라서, 반대의 역할을 할 수도 있다. In this case, the lower ITO electrode 30 may be used as a transmitter line that is intermittently provided with a current. When the upper ITO electrode 20 is provided with current to the lower ITO electrode 30, a part of the body approaches. It can be used as a receiver electrode for measuring the difference between the output signal, that is, the current value generated by the change in the capacitance value of the lower ITO electrode 30 and the upper ITO electrode 40 changed depending on the presence or absence. Of course, the role of the lower and upper ITO electrodes is not determined, and in some cases, may play the opposite role.
상술한 바와 같이, 디스플레이 상부에 배치되어, 간헐적으로 전달되는 전류와 같은 입력 신호에 대응하여, 변화되는 출력 신호의 변화를 감지함으로써, 신체 일부의 접촉 위치를 감지하는 방식을 뮤츄얼(mutual) 방식 또는 뮤츄얼 커패시턴스 터치센싱(mutual capacitance touch sensing) 방식이라 한다.As described above, in response to an input signal such as an electric current intermittently transmitted over the display, a method of detecting a contact position of a part of a body by detecting a change in an output signal that is changed is a mutual method. Alternatively, it is referred to as a mutual capacitance touch sensing method.
또한, 상부 ITO전극(40)은 간헐적으로 전달되는 입력 신호 혹은 출력 신호가 충분히 외부의 제어부로 전달시킬 수 있는 저항 값을 갖도록 조절할 수 있다. 여기서, 제어부는 입력 신호를 하부 ITO전극(30) 혹은 상부 ITO전극(40) 어느 한쪽으로 입력하고, 다른 한쪽으로 출력된 출력 신호를 이용하여 신체 일부의 접촉 위치를 감지하는 역할을 한다. In addition, the upper ITO electrode 40 may be adjusted so that the input signal or the output signal that is intermittently transmitted has a resistance value that can be sufficiently transmitted to an external controller. Here, the controller inputs an input signal to either the lower ITO electrode 30 or the upper ITO electrode 40, and detects a contact position of a part of the body using the output signal output to the other side.
다만, 상부 ITO전극(40)은 교차지점에서 커패시턴스 값의 변화가 발생하도록 그 폭이 하부 ITO전극(30) 보다 좁게 형성되기 때문에, 그 길이가 길어질수록 급격한 저항 값의 상승이 발생할 수 있다. 이에 상부 ITO전극(40)을 길게 하기 어려워서 터치패널센서(1)의 전체 면적의 제한이 따른다. However, since the width of the upper ITO electrode 40 is formed to be narrower than the lower ITO electrode 30 so that a change in capacitance value occurs at an intersection point, a rapid increase in resistance may occur as the length thereof becomes longer. As a result, it is difficult to lengthen the upper ITO electrode 40, thereby limiting the total area of the touch panel sensor 1.
한편, ITO의 저항을 낮추기 위해 ITO의 두께를 증가시킬 수 있으나, 이러한 경우 투과도가 저하되는 문제점이 있고, 그 폭을 300㎛ 이하가 되도록 제조하는 경우에는, 길이 증가에 따른 저항 값의 증가가 너무 큰 문제점이 발생할 수 있다. On the other hand, the thickness of the ITO can be increased in order to lower the resistance of the ITO, but in this case, there is a problem in that the transmittance is lowered. Big problems can arise.
또한, 상부 ITO전극(40)의 저항 값을 줄이기 위하여 그 폭을 넓게 하는 것은, 하부 ITO전극(30)과 상호 작용하여 발생하는 커패시턴스 값의 변화 발생을 고려하여 제한되기 때문에, 그 폭을 하부 ITO전극(30)의 폭 보다 넓게 할 수 없는 제약이 있으며, 더욱이, 그 폭을 넓게 하면 외부에서 가시되는 문제가 발생할 수도 있다. Further, since the width of the upper ITO electrode 40 is increased to reduce the resistance value, the width of the upper ITO electrode 40 is limited in consideration of the occurrence of the change in the capacitance value generated by interacting with the lower ITO electrode 30. There is a restriction that cannot be made wider than the width of the electrode 30. Furthermore, when the width is widened, a problem that is visible from the outside may occur.
또한, 상술한 터치패널센서(1)의 투명한 전극 제조에 사용되는 ITO 및 IZO는 금속과 비교하여 저항이 높기 때문에, 터치패널센서(1)로 제공되는 입력 신호, 및 변경된 커패시턴스 값에 의해서 발생되는 출력 신호의 손실에 의해서 터치패널센서(1)의 감도가 크게 저하될 수 있다.In addition, since the ITO and IZO used for manufacturing the transparent electrode of the touch panel sensor 1 are higher in resistance than the metal, the ITO and IZO are generated by the input signal provided to the touch panel sensor 1 and the changed capacitance value. The sensitivity of the touch panel sensor 1 may be greatly reduced by the loss of the output signal.
본 발명은 터치패널센서에 배치되는 전극의 길이 증가에 따른 저항 값의 증가로 터치패널센서의 면적이 제한되는 한계를 극복할 수 있는 터치패널센서를 제공한다.The present invention provides a touch panel sensor that can overcome the limitation that the area of the touch panel sensor is limited by the increase in the resistance value according to the increase in the length of the electrode disposed in the touch panel sensor.
본 발명은 아래위로 서로 교차하는 전극을 갖는 종래의 터치패널센서의 구조적인 한계에 의해서 제한되는 터치 오차나 터치 감, 터치 효율을 향상시킬 수 있는 터치패널센서를 제공한다.The present invention provides a touch panel sensor that can improve touch error, touch feeling, and touch efficiency limited by structural limitations of a conventional touch panel sensor having electrodes crossing each other up and down.
본 발명의 예시적인 일 실시예에 따르면, 디스플레이 상에 놓여 피대상물의 접촉 위치를 감지하는 터치패널센서는, 일렬로 제공되는 투명 전극패턴, 및 투명 전극패턴과 전기적으로 분리되게 배치되며, 투명 전극패턴과 교차하게 제공되는 메쉬(mesh) 형상의 금속 전극패턴을 포함할 수 있다. According to an exemplary embodiment of the present invention, a touch panel sensor placed on a display and detecting a contact position of an object is disposed to be electrically separated from a transparent electrode pattern provided in a line and a transparent electrode pattern, and the transparent electrode It may include a metal electrode pattern of the mesh (mesh) provided to cross the pattern.
종래의 터치패널센서에서는 피대상물의 접근에 의해서 커패시턴스 변화를 유도하는 상부나 하부 전극패턴을 모두 ITO를 사용하여 상부 ITO전극을 길게 하기 어려웠고, 이에 터치패널센서의 전체 면적이 제한되는 한계가 있었다. In the conventional touch panel sensor, it is difficult to lengthen the upper ITO electrode by using ITO in both the upper and lower electrode patterns inducing capacitance change by the approach of the object, and thus, the total area of the touch panel sensor is limited.
하지만, 본 발명에 따른 터치패널센서에서는 서로 교차 배치되어 커패시턴스 변화를 유도하는 하부 전극으로는 ITO와 같은 도전성 세라믹을 이용한 투명 전극패턴을 그대로 사용하되, 상부 전극으로 금속 전극패턴을 사용함으로써, 그 길이의 제한이 ITO를 사용하던 종래의 상부 전극과는 적어서 터치패널센서의 전체 면적의 제한으로부터 비교적 자유로워진다. However, in the touch panel sensor according to the present invention, a transparent electrode pattern using a conductive ceramic, such as ITO, is used as the lower electrode that is disposed to cross each other and induces a change in capacitance. Since the limit of is less than that of the conventional upper electrode using ITO, it is relatively free from the limitation of the total area of the touch panel sensor.
또한, 금속 전극패턴은 앞서 언급했듯이 얇게 하여도 길이를 늘리는데 비교적 자유로워 외부에서 가시되지 않을 만큼(대략 100㎛이하의 폭)의 폭으로 제공할 수 있고, 더욱이 본 발명에 따른 금속 전극패턴은 메쉬(mesh) 형상으로 제공되어 외부에서 육안으로 잘 확인되지 않는다. 참고로, 메쉬 형태를 갖지 않는 금속 전극패턴은 적어도 50㎛이하의 폭이 되어야 육안으로 잘 확인이 되지 않으나, 그물망상의 금속 전극패턴은 메쉬 형태를 갖지 않는 금속 전극패턴과 비교할 때 그 폭이 다소 더 커지더라도 육안으로 확인되지 않는다. 이는 서로 얽혀 그물망을 이루는 0.5 내지 1㎛ 정도의 미세한 금속선이 빛을 산란하는 역할을 하기 때문이다. In addition, as mentioned above, the metal electrode pattern may be provided with a width that is relatively free to increase the length even if it is thin, so that it is not visible from the outside (a width of about 100 μm or less). It is provided in a (mesh) shape, so it is hard to check with the naked eye from the outside. For reference, the metal electrode pattern not having a mesh shape is at least 50 μm or less in width, and it is hard to see the naked eye. However, the metal electrode pattern on the mesh is slightly wider than the metal electrode pattern without a mesh shape. Even if it grows, it is not visually confirmed. This is because fine metal wires of about 0.5 to 1 μm entangled with each other serve to scatter light.
지금껏 설명한 투명 전극패턴 및 금속 전극패턴은 서로 교차하게 배치되는 범위 내에서 배치가 가능하며, 터치패널센서가 디스플레이 상에 놓이는 하부 절연기판 및 하부 절연기판 상부에 배치되는 상부 절연기판을 포함하는 경우에, 투명 전극패턴 및 금속 전극패턴은 상기 하부 절연기판 및 상부 절연기판의 일면에 각각 배치될 수 있고, 여기서 상기 ‘일면’은 상면 및 저면을 모두 포함할 수 있다. 특히, 투명 전극패턴은 하부 절연기판의 상면에 배치되며, 금속 전극패턴은 상부 절연기판의 저면에 배치되는 것이 바람직하다. The transparent electrode pattern and the metal electrode pattern described above may be disposed within a range intersecting each other, and the touch panel sensor includes a lower insulating substrate on the display and an upper insulating substrate disposed on the lower insulating substrate. The transparent electrode pattern and the metal electrode pattern may be disposed on one surface of the lower insulating substrate and the upper insulating substrate, respectively, wherein the 'one surface' may include both an upper surface and a lower surface. In particular, the transparent electrode pattern is disposed on the upper surface of the lower insulating substrate, the metal electrode pattern is preferably disposed on the bottom surface of the upper insulating substrate.
또한, 터치패널센서가 하부 절연기판을 포함하는 경우, 투명 전극패턴 및 금속 전극패턴이 각각 저면 및 상면에 배치될 수 있다. In addition, when the touch panel sensor includes a lower insulating substrate, the transparent electrode pattern and the metal electrode pattern may be disposed on the bottom and top surfaces, respectively.
또한, 터치패널센서가 하부 절연기판을 포함하는 경우, 투명 전극패턴 및 금속 전극패턴이 어느 일면에 배치되는 것이 가능하며, 투명 전극패턴 및 금속 전극패턴이 모두 상면에 배치될 수도 있다. 이때에는 양 전극패턴이 서로 교차되는 부분에 절연패턴이 배치되어 양 전극패턴을 전기적으로 단락 시킬 수 있다. In addition, when the touch panel sensor includes a lower insulating substrate, the transparent electrode pattern and the metal electrode pattern may be disposed on any one surface, and both the transparent electrode pattern and the metal electrode pattern may be disposed on the upper surface. In this case, an insulating pattern may be disposed at a portion where the positive electrode patterns cross each other to electrically short the positive electrode patterns.
또한, 터치패널센서는 투명 전극패턴 상면에 제공되며, 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴을 포함할 수 있다. 저저항 전극패턴은 PEDOT(폴리에틸렌디옥시티오펜), 은나노 와이어, ITO(Indium Tin Oxide), IZO(indium zinc oxide), ATO(Al-doped Tin Oxide), AZO(Al-doped Zinc Oxide), 및 탄소나노튜브(CNT) 중 어느 하나를 포함할 수 있는 투명 전극패턴의 도전성을 향상시킬 수 있다.In addition, the touch panel sensor may be provided on an upper surface of the transparent electrode pattern, and may include a low resistance electrode pattern having a metal mesh having a lower specific resistance than the transparent electrode pattern. Low-resistance electrode patterns include PEDOT (polyethylenedioxythiophene), silver nanowires, indium tin oxide (ITO), indium zinc oxide (IZO), al-doped tin oxide (ATO), al-doped zinc oxide (AZO), and carbon The conductivity of the transparent electrode pattern which may include any one of the nanotubes (CNT) may be improved.
또한, 투명 전극패턴 및 금속 전극패턴 사이에 배치되어 투명 전극패턴 및 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴을 포함할 수 있다. The dummy electrode pattern may include a dummy electrode pattern disposed between the transparent electrode pattern and the metal electrode pattern and having a mesh shape of a metal that is electrically separated from the transparent electrode pattern and the metal electrode pattern.
더미 전극패턴은 금속 전극패턴과 동일한 재질 또는 다른 금속이나 합금 재질로 형성될 수 있으며, 하부 절연기판의 상면에서 투명 전극패턴이나 금속 전극패턴이 형성되지 않은 영역에 형성될 수 있다. 더미 전극패턴에 의해서 광학적으로 투명 전극패턴이나 금속 전극패턴이 형성되지 않은 영역의 공간이 보상될 수 있으며, 빛이 왜곡되는 것을 방지할 수 있다. The dummy electrode pattern may be formed of the same material as the metal electrode pattern or another metal or alloy material, and may be formed in an area where the transparent electrode pattern or the metal electrode pattern is not formed on the upper surface of the lower insulating substrate. By the dummy electrode pattern, a space in an area in which the optically transparent electrode pattern or the metal electrode pattern is not formed can be compensated and light can be prevented from being distorted.
또한, 더미 전극패턴은 신호의 감도를 편차 없이 거의 동일하게 유지할 수가 있다. 특히, 2개 이상의 금속 전극패턴으로 그룹을 형성하고, 그룹의 금속 전극패턴이 균일한 간격을 유지하도록 형성하는 경우, 신호의 감도를 크게 향상시킬 수가 있는데, 그러한 금속 전극패턴과 투명 전극패턴 사이로 더미 전극패턴을 형성하는 경우 향상된 신호 감도를 편차 없이 거의 동일한 감도로 측정할 수가 있다. In addition, the dummy electrode pattern can keep the signal sensitivity almost the same without variation. In particular, when the group is formed of two or more metal electrode patterns, and the metal electrode patterns of the group are formed to maintain a uniform interval, the sensitivity of the signal can be greatly improved. The dummy between the metal electrode pattern and the transparent electrode pattern When the electrode pattern is formed, the improved signal sensitivity can be measured with almost the same sensitivity without deviation.
신호 감도가 편차 없이 측정하는 것은 프로그램에서 신체 접촉에 대한 판단을 정확하게 빠르게 할 수 있다는 것을 의미하며, 결국 프로그램의 구동속도 및 터치 감도를 향상시킨다는 것을 의미할 수 있다.Measuring the signal sensitivity without deviation means that the program can quickly and accurately determine the contact with the body, which may mean that the program speed and touch sensitivity are improved.
또한, 상술한 바와 같이 투명 전극패턴이나 금속 전극패턴이 하부 절연기판의 상면에 모두 적층 배치되는 경우, 양 전극패턴의 보호를 위해서 하부 절연기판 위로 상부 절연기판이 더 배치될 수도 있다. 이 경우 하부 절연기판 및 상부 절연기판 사이에는 2개의 절연기판을 서로 접합하기 위한 광학접착층을 사용할 수 있다. In addition, when the transparent electrode pattern or the metal electrode pattern is stacked on the upper surface of the lower insulating substrate as described above, the upper insulating substrate may be further disposed on the lower insulating substrate to protect both electrode patterns. In this case, an optical adhesive layer for bonding two insulating substrates to each other may be used between the lower insulating substrate and the upper insulating substrate.
광학접착층은 빛의 확산 기능을 가질 수 있는데, 이 경우 터치패널센서 하부에 배치되는 디스플레이로부터 조사되는 빛에 의해서 금속 전극패턴의 윤곽이 외부에서 가시되는 것을 방지할 수 있다. The optical adhesive layer may have a light diffusion function. In this case, the contour of the metal electrode pattern may be prevented from being visible from the outside by light emitted from the display disposed under the touch panel sensor.
또한, 앞서 언급한대로 투명 전극패턴이나 금속 전극패턴이 하부 절연기판의 같은 면에 배치되는 경우, 투명 전극패턴 상면에 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴이 배치될 수 있고, 투명 전극패턴 및 금속 전극패턴 사이에 투명 전극패턴 및 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴이 배치될 수 있다. 여기서, 금속 전극패턴, 저저항 전극패턴, 및 더미 전극패턴은, 하부 절연기판 상면에 투명 전극패턴을 제공한 후에, 금속 전극패턴, 저저항 전극패턴, 및 더미 전극패턴을 위하여 투명 전극패턴 상에 적층된 금속층을 패터닝하여 한꺼번에 제공될 수 있다. In addition, as described above, when the transparent electrode pattern or the metal electrode pattern is disposed on the same surface of the lower insulating substrate, a low resistance electrode pattern having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern may be disposed on the upper surface of the transparent electrode pattern. The dummy electrode pattern having a mesh shape of a metal electrically separated from the transparent electrode pattern and the metal electrode pattern may be disposed between the transparent electrode pattern and the metal electrode pattern. Here, the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern are provided on the transparent electrode pattern for the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern after providing the transparent electrode pattern on the upper surface of the lower insulating substrate. The laminated metal layers can be patterned at one time.
또한, 상기 금속층은 구리/티타늄(Cu/Ti), 몰리브덴(Mo), 크롬(Cr), 및 블랙크롬(Black Chrome) 중 적어도 어느 하나를 이용하여 형성될 수 있으며, 구리/티타늄, 몰리브덴, 크롬, 및 블랙크롬 등과 같이 어두운 색이나 빛의 반사를 방지할 수 있는 금속으로 제공되는 금속 전극패턴, 저저항 전극패턴, 및 더미 전극패턴은 외부에서 반짝여 가시되는 것을 방지할 수도 있다.In addition, the metal layer may be formed using at least one of copper / titanium (Cu / Ti), molybdenum (Mo), chromium (Cr), and black chromium (Black Chrome), and copper / titanium, molybdenum, and chromium. The metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern provided with a metal capable of preventing reflection of light or dark color, such as, and black chrome, may be prevented from shining externally.
또한, 투명 전극패턴은 일렬로 제공되는 복수의 확장부 및 복수의 확장부 사이를 연결하는 복수의 브릿지부를 포함하고, 금속 전극패턴은 확장부 사이를 가로질러 배치되는 교차부를 포함할 수 있다. In addition, the transparent electrode pattern may include a plurality of extension portions provided in a line and a plurality of bridge portions connecting the plurality of extension portions, and the metal electrode pattern may include crossing portions disposed across the extension portions.
또한, 서로 인접한 상기 확장부 간의 마주보는 가장자리는 서로 평행하며, 교차부는 교차부의 길이방향으로 폭이 일정하되, 교차부의 길이방향을 따르는 가장자리와 확장부의 가장자리는 서로 평행할 수 있다. 이 경우 터치패널센서의 트랜스미터 전극패턴과 리시버 전극패턴의 외곽 가장자리가 최대한 인접해서 지나가게 함으로써, 단순한 직선 구조를 갖는 종래의 상부 및 하부 ITO전극을 사용하는 경우보다 전기장의 변화가 크게 나타날 수 있도록 하여, 더 활성화된 커패시턴스의 변화를 유도하고, 터치패널센서의 감도를 더욱 증가시킴은 물론, 터치 오차를 0%에 가깝게 줄일 수 있다. In addition, opposite edges between the extensions adjacent to each other may be parallel to each other, and the intersection may have a constant width in the longitudinal direction of the intersection, and the edge along the longitudinal direction of the intersection and the edge of the extension may be parallel to each other. In this case, the transmitter electrode pattern of the touch panel sensor and the outer edge of the receiver electrode pattern pass as close as possible, so that the change in the electric field may be larger than when using the conventional upper and lower ITO electrodes having a simple straight structure. In addition, it induces a more active capacitance change, increases the sensitivity of the touch panel sensor, and reduces the touch error to near 0%.
또한, 금속 전극패턴은 서로 인접한 2 이상의 교차부의 상단 및 하단 중 적어도 어느 일측이 전기적으로 연결되는 그룹화된 평행 라인(grouped parallel lines) 형상으로 제공될 수 있다. In addition, the metal electrode pattern may be provided in the form of grouped parallel lines in which at least one of the upper and lower ends of two or more intersections adjacent to each other is electrically connected.
본 발명의 예시적인 다른 실시예에 따르면, 디스플레이 상에 놓여 피대상물의 접촉 위치를 감지하는 터치패널센서의 제조방법은, 하부 절연기판의 일면에 제공되는 투명 전극층을 패터닝하여 투명 전극패턴을 제공하는 단계, 투명 전극패턴 상부에 제공되는 절연층을 패터닝하여 절연패턴을 제공하는 단계, 및 투명 전극패턴 상부에 제공되는 금속층을 패터닝하여 절연패턴에 의해서 투명 전극패턴과 전기적으로 분리되며, 투명 전극패턴과 교차하게 제공되는 메쉬 형상의 금속 전극패턴을 제공하는 단계를 포함할 수 있다. According to another exemplary embodiment of the present invention, a method of manufacturing a touch panel sensor, which is placed on a display and senses a contact position of an object, provides a transparent electrode pattern by patterning a transparent electrode layer provided on one surface of a lower insulating substrate. Step, patterning the insulating layer provided on the transparent electrode pattern to provide an insulating pattern, and patterning a metal layer provided on the transparent electrode pattern and electrically separated from the transparent electrode pattern by the insulating pattern, and the transparent electrode pattern and It may include providing a metal electrode pattern of the mesh shape provided to cross.
금속 전극패턴을 제공하는 단계에서, 투명 전극패턴 상면에 제공되는 금속층을 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴으로 패터닝할 수 있다. In the providing of the metal electrode pattern, the metal layer provided on the upper surface of the transparent electrode pattern may be patterned into a low resistance electrode pattern having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern.
금속 전극패턴을 제공하는 단계에서, 투명 전극패턴 및 금속 전극패턴 사이에 배치되는 금속층을 투명 전극패턴 및 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴으로 패터닝할 수 있다. In the providing of the metal electrode pattern, the metal layer disposed between the transparent electrode pattern and the metal electrode pattern may be patterned into a dummy electrode pattern having a mesh shape of metal electrically separated from the transparent electrode pattern and the metal electrode pattern.
특히, 투명 전극패턴 상면에 제공되며, 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴, 및 투명 전극패턴 및 금속 전극패턴 사이에 배치되어 투명 전극패턴 및 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴을 포함할 수 있고, 금속 전극패턴, 저저항 전극패턴, 더미 전극패턴은, 금속층을 패터닝하여 한꺼번에 제공할 수 있다.In particular, a low resistance electrode pattern provided on an upper surface of the transparent electrode pattern and having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern, and disposed between the transparent electrode pattern and the metal electrode pattern to be electrically connected to the transparent electrode pattern and the metal electrode pattern. The dummy electrode pattern may have a mesh shape of a metal separated by the metal, and the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern may be provided at a time by patterning a metal layer.
종래의 터치패널센서에서는 피대상물의 접근에 의해서 커패시턴스 변화를 유도하는 상부나 하부 전극패턴을 모두 ITO를 사용하여 상부 ITO전극을 길게 하기 어려웠고, 이에 터치패널센서의 전체 면적이 제한되는 한계가 있었다. In the conventional touch panel sensor, it is difficult to lengthen the upper ITO electrode by using ITO in both the upper and lower electrode patterns inducing capacitance change by the approach of the object, and thus, the total area of the touch panel sensor is limited.
하지만, 본 발명에 따른 터치패널센서에서는 서로 교차 배치되어 커패시턴스 변화를 유도하는 하부 전극으로는 ITO와 같은 도전성 세라믹을 이용한 투명 전극패턴을 그대로 사용하되, 상부 전극으로 금속 전극패턴을 사용함으로써, 그 길이의 제한이 ITO를 사용하던 종래의 상부 전극과는 적어서 터치패널센서의 전체 면적의 제한으로부터 비교적 자유로워진다. However, in the touch panel sensor according to the present invention, a transparent electrode pattern using a conductive ceramic, such as ITO, is used as the lower electrode that is disposed to cross each other and induces a change in capacitance. Since the limit of is less than that of the conventional upper electrode using ITO, it is relatively free from the limitation of the total area of the touch panel sensor.
또한, 금속 전극패턴은 얇게 하여도 길이를 늘리는데 비교적 자유로워 외부에서 가시되지 않을 만큼의 폭으로 제공할 수 있고, 더욱이 본 발명에 따른 금속 전극패턴은 메쉬(mesh) 형상으로 제공되어 외부에서 육안으로 잘 확인되지 않는다. In addition, the metal electrode pattern is relatively free to increase the length even if it is thin can be provided in a width that is not visible from the outside, moreover, the metal electrode pattern according to the present invention is provided in a mesh (mesh) shape to the naked eye from the outside Not well checked
또한, 투명 전극패턴이나 금속 전극패턴을 하부 절연기판의 상면에 배치하고, 양 전극패턴을 보호하기 위한 상부 절연기판을 광학접착층을 사용하여 하부 절연기판과 접합할 수 있다. 이때, 빛의 확산 기능을 가지는 광학접착층을 사용함으로써, 디스플레이로부터 조사되는 빛에 의해서 금속 전극패턴의 윤곽이 외부에서 가시되는 것을 방지할 수 있다. In addition, the transparent electrode pattern or the metal electrode pattern may be disposed on the upper surface of the lower insulating substrate, and the upper insulating substrate for protecting both electrode patterns may be bonded to the lower insulating substrate by using an optical adhesive layer. At this time, by using the optical adhesive layer having a light diffusion function, it is possible to prevent the contour of the metal electrode pattern from being visible from the outside by the light irradiated from the display.
또한, 투명 전극패턴이나 금속 전극패턴이 하부 절연기판의 같은 면에 배치되는 경우, 금속 전극패턴, 저저항 전극패턴, 및 더미 전극패턴은, 하부 절연기판 상면에 투명 전극패턴을 제공한 후에, 금속 전극패턴, 저저항 전극패턴, 및 더미 전극패턴을 위한 금속층을 패터닝하여 한꺼번에 제공될 수 있다.In addition, when the transparent electrode pattern or the metal electrode pattern is disposed on the same surface of the lower insulating substrate, the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern may be formed on the upper surface of the lower insulating substrate. Metal layers for the electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern may be patterned and provided at a time.
또한, 종래에는 아래위로 배치되는 2개의 전극이 서로 교차하는 면적에 의해서 터치 오차, 터치 감 혹은 터치 효율이 크게 제한되었으나, 본 발명에 따른 터치패널센서에서는 투명 전극패턴과 금속 전극패턴을 서로 교차 배치하되, 투명 전극패턴이 단순한 직선 형상이 아닌 폭이 서로 다른 확장부들과 이를 연결하는 브릿지부를 갖도록 하고, 금속 전극패턴을 브릿지부 사이를 가로질러 배치함으로써, 종래에 제한되던 터치 오차를 줄이고, 터치 감 혹은 터치 효율을 크게 향상시킬 수 있다. In addition, although the touch error, the touch feeling, or the touch efficiency are greatly limited by the area where two electrodes disposed up and down cross each other, the touch panel sensor according to the present invention crosses the transparent electrode pattern and the metal electrode pattern. However, the transparent electrode pattern is not a simple linear shape but has a different width and the extension portion connecting the bridge portion, and by placing the metal electrode pattern across the bridge portion, to reduce the touch error that is limited in the prior art, Alternatively, the touch efficiency can be greatly improved.
본 발명의 터치패널센서는 투명 전극패턴과 금속 전극패턴의 외곽 가장자리가 최대한 인접해서 지나가게 함으로써, 단순한 직선 구조를 갖는 종래의 상부 및 하부 ITO전극을 사용하는 경우보다 전기장의 변화가 크게 나타날 수 있도록 함으로써, 더 활성화된 커패시턴스의 변화를 유도하고, 터치패널센서의 감도를 더욱 증가시킴은 물론, 터치 오차를 0%에 가깝게 줄일 수 있다. The touch panel sensor of the present invention allows the outer edges of the transparent electrode pattern and the metal electrode pattern to pass as close as possible, so that the change in the electric field may be greater than when using the conventional upper and lower ITO electrodes having a simple straight structure. By inducing a change in the capacitance which is more active, the sensitivity of the touch panel sensor is further increased, and the touch error can be reduced to near 0%.
본 발명의 터치패널센서에서 금속 전극패턴은 서로 인접한 2 이상의 교차부의 상단 및 하단 중 적어도 어느 일측이 전기적으로 연결되는 그룹화된 평행 라인형상으로 제공함으로써, 종래의 상부 ITO전극을 사용하는 경우보다 전기장의 변화를 크게 유도하고, 이를 통해 터치패널센서의 감도를 더욱 증가시킬 수 있다. In the touch panel sensor of the present invention, the metal electrode pattern is provided in a grouped parallel line shape in which at least one side of the upper and lower ends of two or more intersections adjacent to each other is electrically connected, thereby reducing the electric field than the conventional upper ITO electrode. Induce a large change, thereby further increasing the sensitivity of the touch panel sensor.
본 발명의 터치패널센서에서는 감도 향상을 위해서 교차부의 개수를 크게 늘리면서도 교차부를 여러 개 묶어서 외부와 연결하여 교차부의 총 개수보다 적은 수의 리드선을 가진 제어부를 사용할 수 있다.In the touch panel sensor of the present invention, a control unit having fewer leads than the total number of intersections may be used by tying several intersections together while greatly increasing the number of intersections to improve sensitivity.
도 1은 종래의 뮤츄얼 방식의 터치패널센서를 설명하기 위한 사시도이다.1 is a perspective view illustrating a conventional mutual touch panel sensor.
도 2는 본 발명의 일 실시예에 따른 터치패널센서의 분해 사시도이다.2 is an exploded perspective view of a touch panel sensor according to an exemplary embodiment of the present invention.
도 3은 본 발명의 다른 실시예에 따른 터치패널센서의 분해 사시도이다.3 is an exploded perspective view of a touch panel sensor according to another exemplary embodiment of the present invention.
도 4는 하부 절연기판 상면에 배치되는 투명 전극패턴 및 금속 전극패턴의 배치 구조를 설명하기 위한 정면도이다. 4 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate.
도 5는 본 발명의 또 다른 실시예에 따른 터치패널센서에서 하부 절연기판 상면에 배치되는 투명 전극패턴 및 금속 전극패턴의 배치 구조를 설명하기 위한 정면도이다. FIG. 5 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate in a touch panel sensor according to another exemplary embodiment of the present invention.
도 6은 본 발명의 또 다른 실시예에 따른 터치패널센서 중 하부 절연기판의 정면도이다. 6 is a front view of a lower insulating substrate of a touch panel sensor according to another exemplary embodiment of the present invention.
도 7은 본 발명의 또 다른 실시예에 따른 터치패널센서 중 상부 절연기판의 정면도이다. 7 is a front view of an upper insulating substrate of a touch panel sensor according to another embodiment of the present invention.
이하 첨부된 도면들을 참조하여 본 발명의 바람직한 실시예들을 상세하게 설명하지만, 본 발명이 실시예들에 의해 제한되거나 한정되는 것은 아니다. 참고로, 본 설명에서 동일한 번호는 실질적으로 동일한 요소를 지칭하며, 이러한 규칙 하에서 다른 도면에 기재된 내용을 인용하여 설명할 수 있고, 당업자에게 자명하다고 판단되거나 반복되는 내용은 생략될 수 있다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. For reference, in the present description, the same numbers refer to substantially the same elements, and may be described by referring to the contents described in the other drawings under these rules, and the contents determined to be obvious to those skilled in the art or repeated may be omitted.
도 2를 참조하면, 터치패널센서(100)는 하부 절연기판(110), 투명 전극패턴(120), 상부 절연기판(130), 금속 전극패턴(140), 및 광학접착층(150)을 포함한다. 2, the touch panel sensor 100 includes a lower insulating substrate 110, a transparent electrode pattern 120, an upper insulating substrate 130, a metal electrode pattern 140, and an optical adhesive layer 150. .
터치패널센서(100)는 사용자가 터치패널센서(100)를 터치하면 이를 감지할 수 있으며, 디스플레이의 상부에 위치되기 때문에, 기본적으로 하부 절연기판(110), 투명 전극패턴(120), 상부 절연기판(130), 금속 전극패턴(140), 및 광학접착층(150)들은 배면의 디스플레이를 가리지 않아야 한다. The touch panel sensor 100 may detect this when the user touches the touch panel sensor 100, and since the touch panel sensor 100 is positioned on the upper portion of the display, the lower insulation substrate 110, the transparent electrode pattern 120, and the upper insulation are basically provided. The substrate 130, the metal electrode pattern 140, and the optical adhesive layer 150 should not obstruct the backside display.
하부 절연기판(110)은 디스플레이의 상부에 배치되며, 상부 절연기판(130)은 하부 절연기판(110)와 광학접착층(150)을 매개로 접합되며, 절연성의 광학접착층(150)에 의해서 투명 및 금속 전극패턴(120, 140)들이 서로 전기적으로 단락 된다. 광학접착층(150)은 광학접착필름 또는 OCA(Optically Clear Adhesive)필름을 이용할 수 있으며, 하부 절연기판(110) 및 상부 절연기판(130)을 광학적으로 우수하게 접합할 수 있다. The lower insulating substrate 110 is disposed on the upper portion of the display, and the upper insulating substrate 130 is bonded through the lower insulating substrate 110 and the optical adhesive layer 150, and is transparent by the insulating optical adhesive layer 150. The metal electrode patterns 120 and 140 are electrically shorted to each other. The optical adhesive layer 150 may use an optical adhesive film or an optically clear adhesive (OCA) film, and may optically bond the lower insulating substrate 110 and the upper insulating substrate 130 to each other.
투명 전극패턴(120)은 하부 절연기판(110)의 상면에 일 방향으로 나란하게 복수개가 배열되어 있으며, 금속 전극패턴(140)은 상부 절연기판(130)의 저면에 투명 전극패턴(120)과 교차하도록 나란하게 복수개가 배열되어 있다. The plurality of transparent electrode patterns 120 are arranged side by side in one direction on the upper surface of the lower insulating substrate 110, and the metal electrode patterns 140 are disposed on the lower surface of the upper insulating substrate 130. The plurality is arranged side by side to intersect.
금속 전극패턴(140)은 투명 전극패턴(120)의 폭보다 상대적으로 작기 때문에, 투명 전극패턴(120)의 상부에 위치한 금속 전극패턴(140)에 신체의 일부가 접근하면, 투명 전극패턴(120)과 금속 전극패턴(140)이 교차하는 부분에서 형성되는 커패시턴스 값의 변화가 발생하며, 터치패널센서(100)의 제어부에서는 이러한 변화를 체크하여 터치 위치를 계산할 수 있다. Since the metal electrode pattern 140 is relatively smaller than the width of the transparent electrode pattern 120, when a part of the body approaches the metal electrode pattern 140 positioned on the transparent electrode pattern 120, the transparent electrode pattern 120 ) And a change in capacitance value formed at the intersection of the metal electrode pattern 140 and the touch panel sensor 100 may check the change and calculate the touch position.
종래의 터치패널센서에서는 피대상물의 접근에 의해서 커패시턴스 변화를 유도하는 상부나 하부 전극패턴을 모두 ITO를 사용하여 상부 ITO전극을 길게 하기 어려웠고, 이에 터치패널센서의 전체 면적이 제한되는 한계가 있었다. In the conventional touch panel sensor, it is difficult to lengthen the upper ITO electrode by using ITO in both the upper and lower electrode patterns inducing capacitance change by the approach of the object, and thus, the total area of the touch panel sensor is limited.
하지만, 본 발명에 따른 터치패널센서(100)에서는 서로 교차 배치되어 커패시턴스 변화를 유도하는 하부 전극으로는 ITO와 같은 도전성 세라믹을 이용한 투명 전극패턴(120)을 사용하되, 상부 전극으로 금속 전극패턴(140)을 사용함으로써, 그 길이의 제한이 ITO를 사용하던 종래의 상부 전극과는 적어서 터치패널센서의 전체 면적의 제한으로부터 비교적 자유로워진다. However, in the touch panel sensor 100 according to the present invention, a transparent electrode pattern 120 using a conductive ceramic such as ITO is used as a lower electrode intersecting each other to induce a capacitance change, but the metal electrode pattern ( By using 140, the length limit is less than that of the conventional upper electrode using ITO, which makes it relatively free from the limitation of the total area of the touch panel sensor.
또한, 금속 전극패턴(140)은 앞서 언급했듯이 얇게 하여도 길이를 늘리는데 비교적 자유로워 외부에서 가시되지 않을 만큼(대략 100㎛이하의 폭)의 폭으로 제공할 수 있고, 더욱이 본 발명에 따른 금속 전극패턴(140)은 메쉬(mesh) 형상으로 제공되어 외부에서 육안으로 잘 확인되지 않는다. 참고로, 메쉬 형태를 갖지 않는 금속 전극패턴(140)은 적어도 50㎛이하의 폭이 되어야 육안으로 잘 확인이 되지 않으나, 그물망상의 금속 전극패턴(140)은 메쉬 형태를 갖지 않는 통짜의 금속 전극패턴과 비교할 때 그 폭이 다소 더 커지더라도 육안으로 확인되지 않는다. 이는 서로 얽혀 그물망을 이루는 0.5 내지 1㎛ 정도의 미세한 금속선(142)이 빛을 산란하는 역할을 하기 때문이다. In addition, as described above, the metal electrode pattern 140 may be provided with a width that is relatively free to increase the length even if it is thin, so that it is not visible from the outside (a width of about 100 μm or less), and furthermore, the metal electrode according to the present invention. The pattern 140 is provided in a mesh shape and is hardly visually recognized from the outside. For reference, the metal electrode pattern 140 that does not have a mesh shape may not be visually confirmed when the width of the metal electrode pattern 140 is at least 50 μm or less, but the metal electrode pattern 140 that has a mesh shape does not have a mesh shape. Compared with, even if the width is slightly larger, it is not visually confirmed. This is because the fine metal wires 142 having a thickness of about 0.5 to 1 μm entangled with each other serve to scatter light.
참고로, 투명 전극패턴(120) 및 금속 전극패턴(140)은 그 단부와 외부의 제어부를 연결하는 금속 재질의 연결선을 통해서 전기적으로 연결되며, 다음 실시예에서 구체적으로 설명되는 윈도우 데코레이션에 의해서 가려질 수 있다. For reference, the transparent electrode pattern 120 and the metal electrode pattern 140 are electrically connected through a connecting line made of a metal material connecting the ends and the external control unit, and are covered by window decoration described in detail in the following embodiments. Can lose.
참고로, 투명 전극패턴(120) 및 금속 전극패턴(140)을 형성하는 방법을 설명한다. 투명 전극패턴(120)의 경우, 투명 전극패턴(120)을 위한 투명전극층을 하부 절연기판(110) 전체에 도포하고, 이를 패터닝하여 형성할 수 있고, 이는 당업자에게 자명한 사항이므로 구체적인 설명은 생략한다. 마찬가지로, 금속 전극패턴(140) 또한 상술한 패터닝 과정을 통해서 제공할 수도 있으며, 경우에 따라서는 금속 파우더를 경화제에 혼합하여 인쇄하는 방법 등을 사용할 수도 있다. For reference, a method of forming the transparent electrode pattern 120 and the metal electrode pattern 140 will be described. In the case of the transparent electrode pattern 120, a transparent electrode layer for the transparent electrode pattern 120 may be applied to the entire lower insulating substrate 110, and may be formed by patterning the transparent electrode pattern 120. do. Similarly, the metal electrode pattern 140 may also be provided through the above-described patterning process, and in some cases, a method of mixing and printing a metal powder with a curing agent may be used.
도 3은 본 발명의 다른 실시예에 따른 터치패널센서의 분해 사시도이며, 도 4는 하부 절연기판 상면에 배치되는 투명 전극패턴 및 금속 전극패턴의 배치 구조를 설명하기 위한 정면도이다. 3 is an exploded perspective view of a touch panel sensor according to another exemplary embodiment of the present invention, and FIG. 4 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate.
도 3 및 도 4를 참조하면, 터치패널센서(200)는 하부 절연기판(210), 투명 전극패턴(220), 절연패턴(270), 금속 전극패턴(240), 광학접착층(250), 및 상부 절연기판(230)를 포함한다. 3 and 4, the touch panel sensor 200 may include a lower insulating substrate 210, a transparent electrode pattern 220, an insulating pattern 270, a metal electrode pattern 240, an optical adhesive layer 250, and The upper insulating substrate 230 is included.
상부 절연기판(230)은 센서 최상층에 놓여 사용자의 터치가 직접 이루어지는 부분으로 높은 표면 강도를 갖는 재료로서 강화 유리를 사용하는 것이 좋고, 하부 절연기판(210)은 일반 유리도 가능하다. 물론, 양 절연기판은 강화 플라스틱을 사용하는 것도 가능하다. The upper insulating substrate 230 is placed on the uppermost layer of the sensor to directly touch the user, and it is preferable to use tempered glass as a material having high surface strength, and the lower insulating substrate 210 may be ordinary glass. Of course, it is also possible to use reinforced plastics for both insulating substrates.
하부 절연기판(210)의 상면으로 투명 전극패턴(220) 및 금속 전극패턴(240)이 서로 교차하게 배치될 수 있는데, 본 실시예에서는 투명 전극패턴(220)이 하부 절연기판(210) 상면에 먼저 형성되고, 투명 전극패턴(220) 및 금속 전극패턴(240)이 교차하는 부분에는 절연패턴(270)이 배치될 수 있다. 그 후에 금속 전극패턴(240)이 배치될 수 있다. The transparent electrode pattern 220 and the metal electrode pattern 240 may be disposed to cross each other on the upper surface of the lower insulating substrate 210. In this embodiment, the transparent electrode pattern 220 is disposed on the upper surface of the lower insulating substrate 210. First, the insulating pattern 270 may be disposed at a portion where the transparent electrode pattern 220 and the metal electrode pattern 240 cross each other. Thereafter, the metal electrode pattern 240 may be disposed.
본 실시예에서 투명 전극패턴(220)은 트랜스미터 전극의 역할을 하고, 금속 전극패턴(240)은 리시버 전극의 역할을 할 수 있다. 투명 전극패턴(220)은 투광성과 도전성을 모두 갖춘 ITO 또는 IZO, ATO, AZO, 탄소나노튜브 등을 사용하여 제조될 수 있으며, 금속 전극패턴(240)은 금속 재질을 이용한 메쉬 형상으로 제공될 수 있다. In the present embodiment, the transparent electrode pattern 220 may serve as a transmitter electrode, and the metal electrode pattern 240 may serve as a receiver electrode. The transparent electrode pattern 220 may be manufactured using ITO or IZO, ATO, AZO, carbon nanotube, etc., which have both light transmittance and conductivity, and the metal electrode pattern 240 may be provided in a mesh shape using a metal material. have.
투명 전극패턴(220)이나 금속 전극패턴(240)은 모두 외부에서 가시되지 않기 때문에, 터치패널센서의 하부에 배치되는 유기전계발광장치(organic light emitting diode), 액정표시장치(liquid crystal display device), 및 플라즈마 디스플레이 패널(plasma display panel)과 같은 디스플레이의 영상을 가리지 않고 노출시킬 수 있다. Since neither the transparent electrode pattern 220 nor the metal electrode pattern 240 is visible from the outside, an organic light emitting diode or a liquid crystal display device disposed under the touch panel sensor. And an image of a display such as a plasma display panel can be exposed.
한편, 본 실시예에서 투명 전극패턴(220) 및 금속 전극패턴(240)이 모두 하부 절연기판(210) 상면에 배치되는 이유로 별도의 커버가 하부 절연기판(210) 위에 제공될 필요가 있으며, 이에 본 실시예에서는 하부 절연기판(210) 위에 상부 절연기판(230)가 배치된다. Meanwhile, in the present exemplary embodiment, a separate cover needs to be provided on the lower insulating substrate 210 because both the transparent electrode pattern 220 and the metal electrode pattern 240 are disposed on the upper surface of the lower insulating substrate 210. In the present embodiment, the upper insulating substrate 230 is disposed on the lower insulating substrate 210.
상부 절연기판(230)은 광학접착층(250)을 매개로 하부 절연기판(210)과 접합될 수 있으며, 광학접착층(250)은 하부 절연기판(210)과 상부 절연기판(230)을 접합하기 위한 광학접착필름 또는 OCA 필름을 이용할 수 있다. 이러한 광학접착층(250)은 광학적으로 투광성을 가지되, 본 실시예에서는 빛의 확산 기능을 가지는 광학접착층(250)을 사용함으로써, 디스플레이로부터 조사되는 빛에 의해서 금속 전극패턴(240)의 윤곽이 외부에서 가시되는 것을 방지할 수 있다. The upper insulating substrate 230 may be bonded to the lower insulating substrate 210 through the optical adhesive layer 250, and the optical adhesive layer 250 may be used to bond the lower insulating substrate 210 and the upper insulating substrate 230. An optical adhesive film or an OCA film can be used. The optical adhesive layer 250 is optically transmissive, but in this embodiment, by using the optical adhesive layer 250 having a light diffusing function, the contour of the metal electrode pattern 240 is externalized by the light emitted from the display. Can be prevented from
참고로, 상부 절연기판(230)의 저면에는 그 가장자리를 따라서 윈도우 데코레이션(232)이 제공되는데, 윈도우 데코레이션(232)은 중앙의 터치 영역 주변에 대응하며, 실버 페이스트를 이용하여 형성된 와이어패턴(212)을 시각적으로 차단하는 기능을 한다. 도 3을 보면, 와이어패턴(212)에 의해서 투명 전극패턴(220) 및 금속 전극패턴(240)이 연성회로기판(260)과 전기적으로 연결될 수 있다. For reference, a window decoration 232 is provided on the bottom of the upper insulating substrate 230 along its edge, and the window decoration 232 corresponds to the periphery of the center touch area and is formed of a wire pattern 212 using silver paste. ) To block visually. 3, the transparent electrode pattern 220 and the metal electrode pattern 240 may be electrically connected to the flexible circuit board 260 by the wire pattern 212.
이상, 본 실시예에 따른 터치패널센서(200)의 구성을 개략적으로 살펴보았으며, 아래에서는 투명 전극패턴(220) 및 금속 전극패턴(240)의 구체적인 형상 및 그로 인한 효과를 살펴본다. The configuration of the touch panel sensor 200 according to the present embodiment has been described above, and the detailed shapes and effects of the transparent electrode pattern 220 and the metal electrode pattern 240 will be described below.
도 3 및 도 4에 도시된 바와 같이, 투명 전극패턴(220)은 절연패턴(270)에 의해서 금속 전극패턴(240)과 전기적으로 분리되게 배치되며, 구체적으로 투명 전극패턴(220)은 일 방향으로 일렬로 제공되는 복수의 확장부(222) 및 복수의 확장부(222) 사이를 연결하는 복수의 브릿지부(224)를 포함하며, 하부 절연기판(210)의 상면에 제공된다. 3 and 4, the transparent electrode pattern 220 is disposed to be electrically separated from the metal electrode pattern 240 by the insulating pattern 270, and specifically, the transparent electrode pattern 220 is in one direction. It includes a plurality of expansion portion 222 and a plurality of bridge portion 224 connecting between the plurality of expansion portion 222 provided in a line, is provided on the upper surface of the lower insulating substrate (210).
금속 전극패턴(240)은 확장부(222) 사이를 가로질러 일 방향에 수직하게 일렬로 제공되는 복수개의 교차부(241)를 포함하며, 하부 절연기판(210)의 상면에 제공된다. The metal electrode pattern 240 includes a plurality of crossing portions 241 which are provided in a line perpendicular to one direction across the expansion portions 222 and are provided on an upper surface of the lower insulating substrate 210.
여기서, 투명 전극패턴(220) 및 금속 전극패턴(240)은 교차 지점에서 어느 것이 위에 배치되는 가는 설계상의 선택이며, 본 실시예에서는 투명 전극패턴(220)이 교차 지점에서 절연패턴(270) 아래에 놓이는 것을 일 예로 설명한다. Here, the transparent electrode pattern 220 and the metal electrode pattern 240 is a design choice which is disposed above the intersection point, in this embodiment the transparent electrode pattern 220 is below the insulating pattern 270 at the intersection point. It is described as an example.
그리고, 도 4에 도시된 바와 같이, 투명 전극패턴(220)의 확장부(222)는 브릿지부(224)보다 상대적으로 또는 현저하게 넓은 폭으로 형성되며, 브릿지부(224)는 확장부(222)들의 사이에 형성되어 일련의 확장부(222)를 전기적으로 연결할 수가 있다. As shown in FIG. 4, the extension part 222 of the transparent electrode pattern 220 is formed to have a relatively or significantly wider width than the bridge part 224, and the bridge part 224 is the extension part 222. Are formed between the plurality of wires to electrically connect the series of extension portions 222.
종래에는 아래위로 배치되는 2개의 전극이 서로 교차하는 면적에 의해서 터치 오차나 터치 감 혹은 터치 효율이 크게 제한되었으나, 본 발명에 따른 터치패널센서(200)에서는 아래위로 투명 전극패턴(220)과 금속 전극패턴(240)을 배치하되, 투명 전극패턴(220)이 단순한 직선 형상이 아닌 폭이 서로 다른 확장부(222)들과 이를 연결하는 브릿지부(224)를 갖도록 하고, 금속 전극패턴(240)을 브릿지부(224) 사이를 가로질러 배치함으로써, 종래에 제한되던 터치 오차를 줄이고, 터치 감 혹은 터치 효율을 크게 향상시킬 수 있다. Conventionally, the touch error, the touch feeling, or the touch efficiency are greatly limited by the area where two electrodes arranged up and down cross each other. However, in the touch panel sensor 200 according to the present invention, the transparent electrode pattern 220 and the metal are up and down. The electrode pattern 240 is disposed, but the transparent electrode pattern 220 is not a simple linear shape, but has extension portions 222 having different widths and bridge portions 224 connecting them, and the metal electrode pattern 240. By interposing the cross between the bridge portion 224, it is possible to reduce the touch error, which is limited in the prior art, and greatly improve the sense of touch or touch efficiency.
물론, 본 발명에서도 아래위로 배치되는 2개의 전극이 서로 교차하는 면적이 크게 달라지는 것은 아니나, 본 발명에 따른 전극 구조는 종래의 전극 구조와 비교할 때, 동일한 교차 면적을 갖더라도 커패시턴스 값의 변화를 크게 유도할 수 있으며, 이하, 이에 대해서 상세하게 설명한다. Of course, in the present invention, the area in which the two electrodes arranged up and down intersect with each other does not vary significantly, but the electrode structure according to the present invention greatly changes the capacitance value even though the electrode structure according to the present invention has the same crossing area. It can be derived, and will be described in detail below.
먼저, 기본적으로 아래위로 배치되는 투명 전극패턴(220)과 금속 전극패턴(240)에서도 교차하는 지점에서 피대상물이 접근하게 되면 커패시턴스 값의 변화가 온다. 이는 앞서 언급했듯 종래의 단순한 직선 구조의 전극을 갖는 터치패널센서나 본 발명의 투명 전극패턴과 금속 전극패턴을 갖는 터치패널센서 모두 공통적인 부분이다. First, when the object approaches at a point where the transparent electrode pattern 220 and the metal electrode pattern 240 which are basically disposed up and down cross each other, a change in capacitance value comes. As mentioned above, the conventional touch panel sensor having a simple linear structure electrode or a touch panel sensor having a transparent electrode pattern and a metal electrode pattern of the present invention are common parts.
다만, 커패시턴스 값의 변화는 온전하게 아래위로 배치되는 2개의 전극이 겹쳐지는 부분에서만 발생하는 것이 아니고, 서로 인접한 투명 전극패턴(220)과 금속 전극패턴(240) 간에도 발생하게 된다. However, the change in the capacitance value does not occur only at the portion where the two electrodes disposed completely up and down overlap, but also occurs between the transparent electrode pattern 220 and the metal electrode pattern 240 adjacent to each other.
구체적으로, 도 4에 도시된 바와 같이, 투명 전극패턴(220)의 브릿지부(224)와 금속 전극패턴(240)의 서로 온전하게 아래위로 겹쳐 배치되는 교차 면적 외에 확장부(222)와 겹쳐지지는 않으나 브릿지부(224) 바로 옆을 인접해서 지나가는 교차부(241) 사이에도 전기장의 변화 즉, 커패시턴스 값의 변화가 발생하게 된다. Specifically, as shown in FIG. 4, the bridge portion 224 of the transparent electrode pattern 220 and the metal electrode pattern 240 overlap the expansion portion 222 in addition to the intersecting areas that are completely overlapped with each other. However, a change in electric field, that is, a change in capacitance value, occurs between the crossing portions 241 passing adjacent to the bridge portion 224 adjacently.
본 발명에서는 투명 전극패턴(220)과 금속 전극패턴(240)의 외곽 가장자리가 최대한 인접해서 지나가게 함으로써, 단순한 직선 구조를 갖는 종래의 상부 및 하부 ITO전극을 사용하는 경우보다 전기장의 변화가 크게 나타날 수 있다. In the present invention, by making the outer edges of the transparent electrode pattern 220 and the metal electrode pattern 240 pass as close as possible, the change in the electric field is greater than in the case of using the conventional upper and lower ITO electrodes having a simple straight structure. Can be.
구체적으로, 본 발명에서 투명 전극패턴(220)과 금속 전극패턴(240)을 단순한 직선 구조로 제공하는 것이 아니라, 폭이 넓어졌다 좁아지게 투명 전극패턴(220)을 제공하고, 좁은 폭을 갖는 브릿지부(224)들 위로 교차 면적을 형성하도록 금속 전극패턴(240)을 제공함과 동시에 투명 전극패턴(220)의 확장부(222) 측면과 금속 전극패턴(240)을 매우 인접하게 배치함으로써 더 활성화된 커패시턴스의 변화를 유도할 수 있다. Specifically, in the present invention, the transparent electrode pattern 220 and the metal electrode pattern 240 are not provided in a simple straight structure, but the width is widened and narrowed to provide the transparent electrode pattern 220, and a bridge having a narrow width. It is further activated by providing a metal electrode pattern 240 so as to form an intersecting area over the portions 224, and simultaneously placing the metal electrode pattern 240 and the side of the extension 222 of the transparent electrode pattern 220 in close proximity. It can lead to a change in capacitance.
이에, 커패시턴스의 변화를 활성화하여 터치패널센서(200)의 감도를 더욱 증가시킬 수 있음을 예측할 수 있고, 실제로 터치패널센서(200)의 감도가 증가함을 확인할 수 있다. 또한, 본 발명의 전극 구조를 갖는 터치패널센서(200)는 감도 향상은 물론 터치 오차를 0%에 가깝게 줄일 수 있다. Thus, it can be predicted that the sensitivity of the touch panel sensor 200 can be further increased by activating a change in capacitance, and in fact, the sensitivity of the touch panel sensor 200 can be confirmed to increase. In addition, the touch panel sensor 200 having the electrode structure of the present invention can improve the sensitivity and reduce the touch error to near 0%.
또한, 본 발명에 따른 금속 전극패턴(240)의 교차부(241)는 그 길이방향으로 폭이 일정하게 제공될 수 있고, 서로 인접한 확장부(222) 간의 마주보는 가장자리가 서로 평행하도록 하고, 교차부(241)의 길이방향을 따르는 가장자리와 확장부(222)의 가장자리가 서로 평행하게 제공할 수 있다. In addition, the crossing portion 241 of the metal electrode pattern 240 according to the present invention may be provided with a constant width in the longitudinal direction, so that the opposite edges between the adjacent extension portions 222 are parallel to each other, the intersection An edge along the longitudinal direction of the portion 241 and an edge of the extension 222 may be provided in parallel with each other.
이렇게 단순하게 교차 면적만으로 터치 효율을 조절하는 것이 아니라 교차하는 전극들을 포개지지는 않되, 최대한 인접하게 하고, 서로 인접한 길이를 늘리는 전극 구조를 제공하여 터치 오차를 0%에 가깝게 할 수 있다.In this way, the touch efficiency is not simply controlled by the crossing area, but the intersecting electrodes are not overlapped, but the electrode structure is provided to be as close to each other as possible and to increase the length adjacent to each other, thereby making the touch error close to 0%.
도 5는 본 발명의 또 다른 실시예에 따른 터치패널센서에서 하부 절연기판 상면에 배치되는 투명 전극패턴 및 금속 전극패턴의 배치 구조를 설명하기 위한 정면도이다. 참고로, 본 실시예에 따른 기본적인 구성들은 앞선 실시예의 설명 및 도면을 참조할 수 있고, 본 실시예에서는 앞선 실시예와 차이가 있는 금속 전극패턴을 중심으로 설명한다. FIG. 5 is a front view illustrating an arrangement structure of a transparent electrode pattern and a metal electrode pattern disposed on an upper surface of a lower insulating substrate in a touch panel sensor according to another exemplary embodiment of the present invention. For reference, the basic configuration according to the present embodiment can refer to the description and the drawings of the previous embodiment, in the present embodiment will be described with respect to the metal electrode pattern which is different from the previous embodiment.
도 5를 참조하면, 금속 전극패턴(340)은 서로 인접한 2 이상의 교차부(341)의 상단 및 하단 중 적어도 어느 일측이 전기적으로 연결되는 그룹화된 평행 라인 형상으로 제공될 수 있는데, 본 실시예에서는 3개의 교차부(341)의 상단과 하단이 연결되어 있다. Referring to FIG. 5, the metal electrode pattern 340 may be provided in a grouped parallel line shape in which at least one of upper and lower ends of two or more intersections 341 adjacent to each other is electrically connected. The upper and lower ends of the three intersections 341 are connected.
이는 동일한 단위 간격에서 여러 가닥의 교차부(341)가 전기적으로 연결된 상태로 제공되는 것을 의미하고, 각각의 교차부(341)가 그 하부에 배치되는 확장부(322) 및 브릿지부(324)를 포함하는 투명 전극패턴(320)과 전기장을 형성하는 것을 의미한다. 여기서 손가락이 터치패널센서 상부에 인접하게 위치하면, 손가락 단부 역시 커패시턴스를 형성하며, 여러 개의 투명한 교차부(341)와 투명 전극패턴(320)에서 커패시턴스의 변화가 발생하기 때문에 종래의 상부 ITO전극을 사용하는 경우보다 전기장의 변화가 크게 나타날 수 있다. This means that the crossings 341 of the multiple strands are provided in an electrically connected state at the same unit interval, and the extension portion 322 and the bridge portion 324 where each intersection portion 341 is disposed thereunder are provided. This means forming an electric field with the transparent electrode pattern 320. In this case, when the finger is positioned adjacent to the upper part of the touch panel sensor, the finger end also forms a capacitance, and the capacitance of the plurality of transparent intersections 341 and the transparent electrode pattern 320 is changed. The change in electric field may be larger than in the case of use.
이를 통해 그룹화된 평행 라인 형상을 갖는 금속 전극패턴을 사용함으로써 더 활성화된 커패시턴스의 변화를 유도할 수 있으며, 커패시턴스의 변화를 활성화하여 터치패널센서의 감도를 더욱 증가시킬 수 있다. By using the metal electrode pattern having a grouped parallel line shape through this it is possible to induce a change in the more active capacitance, it is possible to further increase the sensitivity of the touch panel sensor by activating the change in capacitance.
특히, 본 실시예에서는 교차부(341)의 개수가 도면에 표시된 바와 같이, 그 수가 18개로 앞선 실시예의 6개보다 크게 늘어 나기 때문에, 교차부(341)와 브릿지부(324)간의 교차 면적의 증가와 더불어 확장부(322)의 측면 가장자리와 인접하게 배치되는 교차부(341)의 측면 가장자리의 길이도 크게 늘어난다. 따라서, 터치패널센서의 감도가 크게 증가할 수 있다. In particular, in the present embodiment, as the number of the intersections 341 is shown in the figure, the number of the intersections increases to 18, which is larger than the six of the previous embodiment, so that the area of the intersection between the intersections 341 and the bridge 324 is increased. Along with the increase, the length of the side edge of the intersection 341 disposed adjacent to the side edge of the extension 322 also increases significantly. Therefore, the sensitivity of the touch panel sensor can be greatly increased.
더욱이, 교차부(341)의 개수를 크게 늘리면서도 교차부(341) 3개를 한 쌍으로 묶어서 외부와 연결하여 교차부(341)의 총 개수보다 적은 수의 리드선을 가진 제어부를 사용할 수 있다. In addition, a control unit having fewer leads than the total number of the intersections 341 may be used by tying three intersections 341 in a pair while greatly increasing the number of the intersections 341.
구체적으로, 앞선 실시예의 터치패널센서에서는 각각의 교차부(341)와 제어부로 사용될 수 있는 정전용량 센서칩을 전기적으로 연결시키기 위하여 각각의 교차부(341) 단부로부터 정전용량 센서칩을 하나의 와이어 연결선을 통해서 연결하고 있다. 하지만, 본 실시예에서는 3개의 교차부(341)를 쌍으로 묶어서 연결하고, 이를 하나의 와이어 연결선을 통해서 정전용량 센서칩에 연결함으로써, 본 실시예의 교차부(341)의 수가 앞선 실시예보다 많더라도 앞선 실시예들과 동일한 정전용량 센서칩을 사용할 수 있다. Specifically, in the touch panel sensor of the previous embodiment, one wire is connected to each of the crossing portions 341 and the capacitive sensor chip from the end of each crossing portion 341 so as to electrically connect the capacitive sensor chips that can be used as the controller. It is connected through the connecting line. However, in the present embodiment, by connecting three intersections 341 in pairs, and connecting them to the capacitive sensor chip through one wire connection line, the number of the intersections 341 of the present embodiment is larger than that of the previous embodiment. The same capacitive sensor chip as in the previous embodiments can be used.
도 6은 본 발명의 또 다른 실시예에 따른 터치패널센서 중 하부 절연기판의 정면도이다. 참고로, 본 실시예에 따른 기본적인 구성들은 앞선 실시예의 설명 및 도면을 참조할 수 있고, 본 실시예에서는 도 3 및 도 4의 도면에 도시된 터치패널센서와 차이가 있는 저저항 전극패턴 및 더미 전극패턴을 중심으로 설명한다. 6 is a front view of a lower insulating substrate of a touch panel sensor according to another exemplary embodiment of the present invention. For reference, the basic configuration according to the present embodiment can refer to the description and the drawings of the previous embodiment, in this embodiment, the low resistance electrode pattern and dummy that is different from the touch panel sensor shown in the drawings of Figures 3 and 4 It demonstrates centering on an electrode pattern.
본 실시예의 터치패널센서의 하부 절연기판 상면에는 확장부(422) 및 브릿지부(424)를 포함하는 투명 전극패턴(420), 절연패턴(480), 및 금속 전극패턴(440)이 순차로 배치된다. The transparent electrode pattern 420 including the extension part 422 and the bridge part 424, the insulating pattern 480, and the metal electrode pattern 440 are sequentially disposed on the upper surface of the lower insulating substrate of the touch panel sensor of the present embodiment. do.
그리고, 투명 전극패턴(420)의 상면에는 투명 전극패턴(420)보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴(470)이 제공된다. 저저항 전극패턴(470)은 투명 전극패턴(420)의 도전성을 향상시킬 수 있다. 저저항 전극패턴(470)은 정확히 본 실시예에서 투명 전극패턴(420)의 확장부(422) 상면과 브릿지부(424)를 거쳐 절연패턴(480)의 상면 일부까지 연장되어 제공된다. 브릿지부(424) 상면에 저저항 전극패턴(470)을 전부 형성하지는 않으며, 이는 저저항 전극패턴(470)을 통해서 투명전극 패턴(420)과 더미 전극패턴(490)이 전기적으로 연결되는 것을 막기 위해서이다. A low resistance electrode pattern 470 having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern 420 is provided on the top surface of the transparent electrode pattern 420. The low resistance electrode pattern 470 may improve conductivity of the transparent electrode pattern 420. The low resistance electrode pattern 470 extends to the upper portion of the insulating pattern 480 via the upper portion of the transparent portion 422 and the bridge portion 424 of the transparent electrode pattern 420. Not all of the low resistance electrode patterns 470 are formed on the upper surface of the bridge portion 424, which prevents the transparent electrode pattern 420 and the dummy electrode pattern 490 from being electrically connected through the low resistance electrode patterns 470. For that.
또한, 투명 전극패턴(420) 및 금속 전극패턴(440) 사이에 투명 전극패턴(420) 및 금속 전극패턴(440)과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴(490)이 배치된다. In addition, a dummy electrode pattern 490 having a mesh shape of a metal electrically separated from the transparent electrode pattern 420 and the metal electrode pattern 440 is disposed between the transparent electrode pattern 420 and the metal electrode pattern 440. do.
더미 전극패턴(490)은 금속 전극패턴(440)과 동일한 재질 또는 다른 금속이나 합금 재질로 형성될 수 있으며, 하부 절연기판(410)의 상면에서 투명 전극패턴(420)이나 금속 전극패턴(440)이 형성되지 않은 영역에 형성되며, 일부는 투명 전극패턴(420)이나 금속 전극패턴(440)과 절연을 유지할 수 있는 범위 내에서 절연패턴(480) 상에도 형성된다. 더미 전극패턴(490)에 의해서 광학적으로 투명 전극패턴(420)이나 금속 전극패턴(440)이 형성되지 않은 영역의 공간이 보상될 수 있으며, 빛이 왜곡되는 것을 방지할 수 있다. The dummy electrode pattern 490 may be formed of the same material as the metal electrode pattern 440 or a different metal or alloy material, and the transparent electrode pattern 420 or the metal electrode pattern 440 may be formed on the upper surface of the lower insulating substrate 410. It is formed in the non-formed area, and a part of it is also formed on the insulating pattern 480 within a range capable of maintaining insulation with the transparent electrode pattern 420 or the metal electrode pattern 440. By the dummy electrode pattern 490, a space in an area in which the optically transparent electrode pattern 420 or the metal electrode pattern 440 is not formed may be compensated for, and the light may be prevented from being distorted.
이하, 본 실시예의 투명 전극패턴(420), 절연패턴(480), 및 금속 전극패턴(440)을 제공하는 방법을 살펴본다. Hereinafter, a method of providing the transparent electrode pattern 420, the insulating pattern 480, and the metal electrode pattern 440 according to the present embodiment will be described.
먼저, 하부 절연기판 상면에 투명 전극패턴(420)을 위한 투명 전극층을 전면에 형성할 수 있다. 그 후에, 감광막을 이용한 사진식각 공정을 통해서 원하는 패턴을 갖는 투명 전극패턴(420)을 얻을 수 있다. First, a transparent electrode layer for the transparent electrode pattern 420 may be formed on the entire surface of the lower insulating substrate. Thereafter, a transparent electrode pattern 420 having a desired pattern may be obtained through a photolithography process using a photosensitive film.
그 후에, 투명 전극패턴(420)과 금속 전극패턴(440)이 교차하는 부분에서 서로 전기적으로 연결되지 않도록 하는 절연패턴(480)을 위한 절연층을 하부 절연기판 전면에 형성한다. 그리고 절연층을 패터닝하여 절연패턴(480)을 얻을 수 있다. Thereafter, an insulating layer for the insulating pattern 480 is formed on the entire surface of the lower insulating substrate so that the transparent electrode pattern 420 and the metal electrode pattern 440 are not electrically connected to each other. In addition, an insulating pattern 480 may be obtained by patterning the insulating layer.
다음으로, 하부 절연기판(410) 상면 전체에 걸쳐 금속 전극패턴(440)을 위한 금속층을 제공하고, 이를 패터닝하여 망상의 금속 전극패턴(440)을 얻을 수 있다. 이때, 금속 전극패턴(440)을 패터닝하면서 투명 전극패턴(420)의 확장부(422) 상에 형성되는 저저항 전극패턴(470)과 투명 전극패턴(420)과 금속 전극패턴(440) 사이 공간에 형성되는 더미 전극패턴(490)을 함께 제공할 수 있다. Next, a metal layer for the metal electrode pattern 440 is provided over the entire upper surface of the lower insulating substrate 410, and patterned to obtain a mesh metal electrode pattern 440. In this case, a space between the low resistance electrode pattern 470 and the transparent electrode pattern 420 and the metal electrode pattern 440 formed on the extension 422 of the transparent electrode pattern 420 while patterning the metal electrode pattern 440. The dummy electrode pattern 490 may be provided together.
도 7은 본 발명의 또 다른 실시예에 따른 터치패널센서 중 상부 절연기판의 정면도이다. 참고로, 본 실시예에 따른 기본적인 구성들에 대한 설명은 도 2를 참조하여 설명하고 있는 앞선 실시예의 설명을 참조할 수 있고, 본 실시예에서는 도 2의 도면에 도시된 터치패널센서와 차이가 있는 더미 전극패턴을 중심으로 설명한다. 7 is a front view of an upper insulating substrate of a touch panel sensor according to another embodiment of the present invention. For reference, the description of the basic components according to the present embodiment may refer to the description of the foregoing embodiment described with reference to FIG. 2, which is different from the touch panel sensor illustrated in FIG. 2. The dummy electrode pattern is described.
본 실시예의 터치패널센서(500)는 하부 절연기판(510), 투명 전극패턴(520), 상부 절연기판(530), 금속 전극패턴(540), 및 광학접착층(550)을 포함한다. The touch panel sensor 500 according to the present exemplary embodiment includes a lower insulating substrate 510, a transparent electrode pattern 520, an upper insulating substrate 530, a metal electrode pattern 540, and an optical adhesive layer 550.
투명 전극패턴(520)들의 폭보다 상대적으로 폭이 좁은 금속 전극패턴(540) 사이에는 더미 전극패턴(590)이 배치된다. The dummy electrode pattern 590 is disposed between the metal electrode patterns 540 having a width narrower than that of the transparent electrode patterns 520.
더미 전극패턴(590)은 금속 전극패턴(540)과 동일한 재질 또는 다른 금속이나 합금 재질로 형성될 수 있으며, 금속 전극패턴(540)과 전기적으로 분리되게 형성될 수 있다. The dummy electrode pattern 590 may be formed of the same material as the metal electrode pattern 540 or a different metal or alloy material, and may be formed to be electrically separated from the metal electrode pattern 540.
상술한 바와 같이, 본 발명의 바람직한 실시예를 참조하여 설명하였지만 해당 기술분야의 숙련된 당업자라면 하기의 청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 이해할 수 있을 것이다.As described above, although described with reference to the preferred embodiment of the present invention, those skilled in the art various modifications and variations of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.
본 발명에 따른 터치패널센서는 대상체의 접촉 위치를 감지하기 위한 용도로 디스플레이에 널리 적용될 수 있다. The touch panel sensor according to the present invention can be widely applied to a display for the purpose of detecting a contact position of an object.

Claims (21)

  1. 디스플레이 상에 놓여 피대상물의 접촉 위치를 감지하는 터치패널센서에 있어서,A touch panel sensor placed on a display to sense a contact position of an object,
    투명 전극패턴; 및Transparent electrode patterns; And
    상기 투명 전극패턴과 전기적으로 분리되게 배치되며, 상기 투명 전극패턴과 교차하게 제공되는 메쉬(mesh) 형상의 금속 전극패턴;A metal electrode pattern having a mesh shape and disposed to be electrically separated from the transparent electrode pattern and provided to cross the transparent electrode pattern;
    을 포함하는 것을 특징으로 하는 터치패널센서.Touch panel sensor comprising a.
  2. 제1항에 있어서, The method of claim 1,
    상기 디스플레이 상에 놓이는 하부 절연기판 및 상기 하부 절연기판 상부에 배치되는 상부 절연기판을 포함하며, A lower insulating substrate disposed on the display and an upper insulating substrate disposed on the lower insulating substrate;
    상기 투명 전극패턴 및 상기 금속 전극패턴은 상기 하부 절연기판 및 상부 절연기판의 일면에 각각 배치되는 것을 특징으로 하는 터치패널센서. And the transparent electrode pattern and the metal electrode pattern are disposed on one surface of the lower insulating substrate and the upper insulating substrate, respectively.
  3. 제2항에 있어서, The method of claim 2,
    상기 투명 전극패턴은 상기 하부 절연기판의 상면에 배치되며, 상기 금속 전극패턴은 상기 상부 절연기판의 저면에 배치되는 것을 특징으로 하는 터치패널센서. And the transparent electrode pattern is disposed on an upper surface of the lower insulating substrate, and the metal electrode pattern is disposed on a bottom surface of the upper insulating substrate.
  4. 제1항에 있어서, The method of claim 1,
    상기 투명 전극패턴 및 상기 금속 전극패턴이 각각 저면 및 상면에 배치되는 하부 절연기판을 포함하는 것을 특징으로 하는 터치패널센서. And a lower insulating substrate having the transparent electrode pattern and the metal electrode pattern disposed on a bottom surface and an upper surface thereof, respectively.
  5. 제1항에 있어서, The method of claim 1,
    상기 투명 전극패턴 및 상기 금속 전극패턴이 일면에 배치되는 하부 절연기판을 포함하는 것을 특징으로 하는 터치패널센서.And a lower insulating substrate having the transparent electrode pattern and the metal electrode pattern disposed on one surface thereof.
  6. 제5항에 있어서, The method of claim 5,
    상기 투명 전극패턴 상면에 제공되며, 상기 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴을 포함하는 것을 특징으로 하는 터치패널센서. And a low resistance electrode pattern provided on an upper surface of the transparent electrode pattern and having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern.
  7. 제5항에 있어서, The method of claim 5,
    상기 투명 전극패턴 및 상기 금속 전극패턴 사이에 배치되어 상기 투명 전극패턴 및 상기 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴을 포함하는 것을 특징으로 하는 터치패널센서. And a dummy electrode pattern disposed between the transparent electrode pattern and the metal electrode pattern and having a mesh shape of a metal electrically separated from the transparent electrode pattern and the metal electrode pattern.
  8. 제5항에 있어서, The method of claim 5,
    상기 하부 절연기판 상부에 배치되는 상부 절연기판 및 상기 하부 절연기판과 상기 상부 절연기판을 접합하기 위한 광학접착층을 포함하며, An upper insulating substrate disposed on the lower insulating substrate and an optical adhesive layer for bonding the lower insulating substrate and the upper insulating substrate,
    상기 투명 전극패턴 및 상기 금속 전극패턴은 상기 하부 시트의 상면에서부터 적층되는 것을 특징으로 하는 터치패널센서. And the transparent electrode pattern and the metal electrode pattern are stacked from an upper surface of the lower sheet.
  9. 제8항에 있어서, The method of claim 8,
    상기 광학접착층은 빛의 확산 기능을 갖는 것을 특징으로 하는 터치패널센서.The optical adhesive layer is a touch panel sensor, characterized in that it has a light diffusion function.
  10. 제5항에 있어서, The method of claim 5,
    상기 투명 전극패턴 상면에 제공되며, 상기 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴; 및 A low resistance electrode pattern provided on an upper surface of the transparent electrode pattern and having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern; And
    상기 투명 전극패턴 및 상기 금속 전극패턴 사이에 배치되어 상기 투명 전극패턴 및 상기 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴을 포함하며, A dummy electrode pattern disposed between the transparent electrode pattern and the metal electrode pattern and having a mesh shape of a metal that is electrically separated from the transparent electrode pattern and the metal electrode pattern;
    상기 금속 전극패턴, 상기 저저항 전극패턴, 및 상기 더미 전극패턴은, The metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern,
    상기 하부 절연기판 상면에 상기 투명 전극패턴을 제공한 후에, 상기 금속 전극패턴, 상기 저저항 전극패턴, 및 상기 더미 전극패턴을 위한 금속층을 패터닝하여 한꺼번에 제공하는 것을 특징으로 하는 터치패널센서.And after providing the transparent electrode pattern on the lower insulating substrate, patterning the metal layers for the metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern.
  11. 제1항에 있어서, The method of claim 1,
    상기 투명 전극패턴은 일렬로 제공되는 복수의 확장부 및 복수의 상기 확장부 사이를 연결하는 복수의 브릿지부를 포함하고, The transparent electrode pattern includes a plurality of extension portions provided in a line and a plurality of bridge portions connecting the plurality of extension portions,
    상기 금속 전극패턴은 상기 확장부 사이를 가로질러 배치되는 교차부를 포함하는 것을 특징으로 하는 터치패널센서. The metal electrode pattern includes a crossing portion disposed across the expansion portion.
  12. 제11항에 있어서, The method of claim 11,
    상기 금속 전극패턴은 서로 인접한 2 이상의 상기 교차부의 상단 및 하단 중 적어도 어느 일측이 전기적으로 연결되는 그룹화된 평행 라인(grouped parallel lines) 형상으로 제공되는 것을 특징으로 하는 터치패널센서.The metal electrode pattern is a touch panel sensor, characterized in that provided in the form of grouped parallel lines in which at least one side of the top and bottom of the two or more intersections adjacent to each other are electrically connected.
  13. 제1항에 있어서, The method of claim 1,
    상기 투명 전극패턴 및 상기 금속 전극패턴이 교차하는 부분에 상기 투명 전극패턴 및 상기 금속 전극패턴을 전기적으로 분리하기 위하여 배치되는 절연패턴을 포함하는 것을 특징으로 하는 터치패널센서. And an insulating pattern disposed at the intersection of the transparent electrode pattern and the metal electrode pattern to electrically separate the transparent electrode pattern and the metal electrode pattern.
  14. 디스플레이 상에 놓여 피대상물의 접촉 위치를 감지하는 터치패널센서의 제조방법에 있어서,In the manufacturing method of the touch panel sensor which is placed on the display to sense the contact position of the object,
    하부 절연기판의 일면에 제공되는 투명 전극층을 패터닝하여 투명 전극패턴을 제공하는 단계;Patterning the transparent electrode layer provided on one surface of the lower insulating substrate to provide a transparent electrode pattern;
    상기 투명 전극패턴 상부에 제공되는 절연층을 패터닝하여 절연패턴을 제공하는 단계; 및 Patterning an insulating layer provided on the transparent electrode pattern to provide an insulating pattern; And
    상기 투명 전극패턴 상부에 제공되는 금속층을 패터닝하여 상기 절연패턴에 의해서 상기 투명 전극패턴과 전기적으로 분리되며, 상기 투명 전극패턴과 교차하게 제공되는 메쉬 형상의 금속 전극패턴을 제공하는 단계;Patterning a metal layer provided on the transparent electrode pattern to provide a mesh-shaped metal electrode pattern electrically separated from the transparent electrode pattern by the insulating pattern and provided to intersect the transparent electrode pattern;
    를 포함하는 것을 특징으로 하는 터치패널센서의 제조방법.Method of manufacturing a touch panel sensor comprising a.
  15. 제14항에 있어서, The method of claim 14,
    상기 금속 전극패턴을 제공하는 단계에서, In the step of providing the metal electrode pattern,
    상기 투명 전극패턴 상면에 제공되는 상기 금속층을 상기 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴으로 패터닝하는 것을 특징으로 하는 터치패널센서의 제조방법.And manufacturing the metal layer provided on the transparent electrode pattern on a low resistance electrode pattern having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern.
  16. 제14항에 있어서, The method of claim 14,
    상기 금속 전극패턴을 제공하는 단계에서, In the step of providing the metal electrode pattern,
    상기 투명 전극패턴 및 상기 금속 전극패턴 사이에 배치되는 상기 금속층을 상기 투명 전극패턴 및 상기 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴으로 패터닝하는 것을 특징으로 하는 터치패널센서의 제조방법.And patterning the metal layer disposed between the transparent electrode pattern and the metal electrode pattern into a dummy electrode pattern having a mesh shape of a metal electrically separated from the transparent electrode pattern and the metal electrode pattern. Manufacturing method.
  17. 제14항에 있어서, The method of claim 14,
    상기 하부 절연기판 상부에 배치되는 상부 절연기판 및 상기 하부 절연기판과 상기 상부 절연기판을 접합하기 위한 광학접착층을 포함하며, An upper insulating substrate disposed on the lower insulating substrate and an optical adhesive layer for bonding the lower insulating substrate and the upper insulating substrate,
    상기 광학접착층은 빛의 확산 기능을 갖는 것을 특징으로 하는 터치패널센서의 제조방법.The optical adhesive layer is a manufacturing method of the touch panel sensor, characterized in that it has a light diffusion function.
  18. 제14항에 있어서, The method of claim 14,
    상기 투명 전극패턴 상면에 제공되며, 상기 투명 전극패턴보다 비저항이 낮은 금속의 메쉬 형상을 가지는 저저항 전극패턴; 및 A low resistance electrode pattern provided on an upper surface of the transparent electrode pattern and having a mesh shape of a metal having a lower specific resistance than the transparent electrode pattern; And
    상기 투명 전극패턴 및 상기 금속 전극패턴 사이에 배치되어 상기 투명 전극패턴 및 상기 금속 전극패턴과는 전기적으로 분리되는 금속의 메쉬 형상을 가지는 더미 전극패턴을 포함하며, A dummy electrode pattern disposed between the transparent electrode pattern and the metal electrode pattern and having a mesh shape of a metal that is electrically separated from the transparent electrode pattern and the metal electrode pattern;
    상기 금속 전극패턴, 상기 저저항 전극패턴, 상기 더미 전극패턴은, 상기 금속층을 패터닝하여 한꺼번에 제공하는 것을 특징으로 하는 터치패널센서의 제조방법.The metal electrode pattern, the low resistance electrode pattern, and the dummy electrode pattern, the method of manufacturing a touch panel sensor, characterized in that provided by patterning the metal layer at a time.
  19. 제14항에 있어서, The method of claim 14,
    상기 투명 전극패턴은 일렬로 제공되는 복수의 확장부 및 복수의 상기 확장부 사이를 연결하는 복수의 브릿지부를 포함하고, The transparent electrode pattern includes a plurality of extension portions provided in a line and a plurality of bridge portions connecting the plurality of extension portions,
    상기 금속 전극패턴은 상기 확장부 사이를 가로질러 배치되는 교차부를 포함하는 것을 특징으로 하는 터치패널센서의 제조방법.The metal electrode pattern is a manufacturing method of the touch panel sensor, characterized in that it comprises a crossing portion disposed across the extension.
  20. 제19항에 있어서, The method of claim 19,
    상기 금속 전극패턴은 서로 인접한 2 이상의 상기 교차부의 상단 및 하단 중 적어도 어느 일측이 전기적으로 연결되는 그룹화된 평행 라인 형상으로 제공되는 것을 특징으로 하는 터치패널센서의 제조방법.The metal electrode pattern is a manufacturing method of the touch panel sensor, characterized in that provided in a grouped parallel line shape in which at least one side of the top and bottom of the two or more intersections adjacent to each other are electrically connected.
  21. 제14항에 있어서, The method of claim 14,
    상기 투명 전극패턴은 은나노 와이어, 폴리에틸렌디옥시티오펜, ITO, IZO, CNT 및 AZO 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 터치패널센서의 제조방법. The transparent electrode pattern is a manufacturing method of a touch panel sensor, characterized in that it comprises at least one of silver nanowires, polyethylene dioxythiophene, ITO, IZO, CNT and AZO.
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