WO2015174686A1 - Panneau tactile - Google Patents

Panneau tactile Download PDF

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Publication number
WO2015174686A1
WO2015174686A1 PCT/KR2015/004581 KR2015004581W WO2015174686A1 WO 2015174686 A1 WO2015174686 A1 WO 2015174686A1 KR 2015004581 W KR2015004581 W KR 2015004581W WO 2015174686 A1 WO2015174686 A1 WO 2015174686A1
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WO
WIPO (PCT)
Prior art keywords
trace
pattern
touch panel
sensing pattern
metal
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Application number
PCT/KR2015/004581
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English (en)
Korean (ko)
Inventor
안기환
백성호
임정구
Original Assignee
동우화인켐 주식회사
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Application filed by 동우화인켐 주식회사 filed Critical 동우화인켐 주식회사
Publication of WO2015174686A1 publication Critical patent/WO2015174686A1/fr

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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
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices

Definitions

  • the present invention relates to a touch panel.
  • the touch panel is a screen panel equipped with a special input device that receives a position when touched by hand.
  • These touch panels can receive input data directly from the screen so that when a person's hand or object touches a character or a specific location on the screen without using a keyboard, the location can be detected and processed by the stored software.
  • it is configured to be laminated in multiple layers.
  • the use of the transparent sensing electrode is essential, and typically, a transparent sensing electrode formed in a predetermined pattern is used.
  • Various transparent sensing electrode structures used in the touch panel have been introduced, and examples thereof include glass-ITO film-ITO film (GFF), glass-ITO film (G1F), and glass-only (G2) structures. .
  • a structure shown in FIG. 1 may be cited as a conventional transparent sensing electrode structure.
  • the transparent sensing electrode may be formed of the first sensing pattern 10 and the second sensing pattern 20.
  • the first sensing pattern 10 and the second sensing pattern 20 are disposed in different directions to provide information about the X and Y coordinates of the touched point. Specifically, when a person's hand or an object comes into contact with the transparent substrate, a change in capacitance according to the contact position is caused to the driving circuit via the first sensing pattern 10, the second sensing pattern 20, and the position detecting line. Delivered. Then, the contact position is grasped by the change of the capacitance converted into an electrical signal by the X and Y input processing circuit (not shown) or the like.
  • the first sensing pattern 10 and the second sensing pattern 20 are formed on the same substrate, and each pattern must be electrically connected to sense a touched point.
  • the second sensing patterns 20 are connected to each other, but the first sensing patterns 10 are separated in an island form, a separate connection is required to electrically connect the first sensing patterns 10.
  • An electrode (bridge) 50 is required.
  • connection electrode 50 should not be electrically connected to the second sensing pattern 20, the connection electrode 50 should be formed on a different layer from the second sensing pattern 20.
  • FIG. 2 an enlarged view of a portion where the connection electrode 50 is formed in the A-A 'cross section of FIG. 1 is shown in FIG. 2.
  • the first sensing pattern 10 and the second sensing pattern 20 are electrically insulated from each other by the insulating layer 30 formed thereon. As described above, since the first sensing pattern 10 needs to be electrically connected, the first sensing pattern 10 may be electrically connected using the connection electrode 50.
  • connection electrode 50 In order to connect the first sensing pattern 10 separated in an island form with the connection electrode 50 while being electrically disconnected from the second sensing pattern 20, a contact hole 40 is formed on the insulating layer 30. Afterwards, it is necessary to go through the step of forming a separate connection electrode (50).
  • the transparent sensing electrode having the connection electrode 50 separately requires a separate process for forming the contact hole 40 and the connection electrode 50, and the first sensing pattern 10 and the 2 may cause a problem that the sensing pattern 20 is electrically shorted, there is a problem that the electrical conductivity is reduced due to the contact resistance between the connection electrode and the sensing pattern.
  • Korean Laid-Open Patent Publication No. 2010-84263 proposes a structure in which an insulating layer and a contact hole are formed after forming a connection electrode on a substrate first, and then a first sensing pattern and a second sensing pattern are formed. To solve this problem, the number of masks and the complexity of the process were solved.
  • Korean Patent Publication No. 2010-84263 also has to provide a separate connection electrode, it does not fundamentally solve the above problems.
  • Patent Document 1 Korean Patent Publication No. 2010-84263
  • An object of the present invention is to provide a touch panel having a high electrical conductivity.
  • Another object of the present invention is to provide a touch panel with low visibility according to the difference in reflectance for each location.
  • a touch panel disposed on the viewer side of the display panel
  • a sensing pattern formed on one side of the viewer's side of the substrate is formed on one side of the viewer's side of the substrate
  • the touch panel of claim 1 wherein the display panel comprises a first black matrix layer defining an inter pixel boundary.
  • the sensing pattern is disposed spaced apart into a plurality of unit sensing patterns
  • the trace extends from each unit sensing pattern to the nearest bezel portion to connect the sensing pattern with the pad portion on the bezel portion.
  • the touch panel of claim 1 further comprising a second black matrix layer disposed adjacent to a trace and a sensing pattern on an upper side of the inter-pixel boundary corresponding area of the one surface.
  • the sensing pattern and the trace independently of each other indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc oxide (IZTO) and cadmium tin oxide (CTO) Touch panel formed of at least one material selected from the group consisting of.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • IZTO indium zinc oxide
  • CTO cadmium tin oxide
  • the touch panel of claim 1 wherein the sensing pattern and the trace have a thickness of 10 to 150 nm independently of each other.
  • the metal auxiliary pattern is formed of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium or alloys thereof, the touch panel.
  • the touch panel is a third black matrix layer or a metal oxide layer.
  • the metal oxide is an oxide of at least one metal selected from the group consisting of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium, and niobium.
  • the touch panel 10. In the above 8, wherein the metal oxide layer has a refractive index of 1.0 to 3.1, the touch panel.
  • the touch panel 11. In the above 8, wherein the metal oxide layer has a thickness of 15 to 100nm, the touch panel.
  • the sensing pattern is formed to be spaced apart from the plurality of unit sensing patterns,
  • the trace extends from each unit sensing pattern to a nearest bezel portion to connect the sensing pattern with a driving circuit on the bezel portion.
  • the sensing pattern and the trace are indium tin oxide (ITO), indium zinc oxide (IZO), zinc oxide (ZnO), indium zinc oxide (IZTO) and cadmium tin oxide (CTO), respectively Forming from at least one material selected from the group consisting of, the manufacturing method of the touch panel.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • IZTO indium zinc oxide
  • CTO cadmium tin oxide
  • the metal auxiliary pattern is formed of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium or alloys thereof, the method of manufacturing a touch panel.
  • the light blocking layer is an oxide of one or more metals selected from the group consisting of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium and niobium on the metal auxiliary pattern
  • the touch panel of the present invention may be provided with a metal auxiliary pattern to increase the electrical conductivity of the sensing pattern to implement improved touch sensitivity.
  • the touch panel of the present invention exhibits a markedly improved transmittance by arranging the metal auxiliary pattern on the black matrix on the pixel portion.
  • the touch panel of the present invention can minimize the visibility problem according to the difference in reflectance for each position.
  • 1 is a schematic plan view of a conventional transparent sensing electrode.
  • FIG. 2 is a schematic vertical cross-sectional view of a conventional transparent sensing electrode.
  • FIG 3 is a schematic vertical cross-sectional view of a touch panel according to an embodiment of the present invention disposed on one surface of a display panel.
  • FIG. 4 is a plan view schematically illustrating an arrangement of a metal auxiliary pattern and a sensing pattern in a touch panel according to an exemplary embodiment of the present invention.
  • FIG. 5 is a schematic vertical cross-sectional view of a touch panel according to an embodiment of the present invention disposed on one surface of a display panel.
  • FIG. 6 is a schematic vertical cross-sectional view of the laminate of Preparation Examples 1 to 4.
  • FIG. 6 is a schematic vertical cross-sectional view of the laminate of Preparation Examples 1 to 4.
  • FIG. 7 is a schematic vertical cross-sectional view of the laminate of Preparation Example 5.
  • the present invention is a touch panel disposed on the viewer side of the display panel, the sensing pattern formed on one surface of the viewer side of the substrate, disposed above the boundary corresponding area between pixels of the display panel on the one surface, and connecting the sensing pattern to the pad unit.
  • the present invention relates to a touch panel that can exhibit improved touch sensitivity and excellent transmittance as well as minimize visibility problems.
  • FIG. 3 and 5 are schematic vertical cross-sectional views of a touch panel according to an embodiment of the present invention disposed on one surface of a display panel
  • FIG. 4 schematically illustrates the arrangement of a metal auxiliary pattern and a sensing pattern in a touch panel according to an embodiment. It is a top view shown by.
  • the touch panel 200 of the present invention is disposed on the viewer side of the display panel 100.
  • the display panel 100 is not particularly limited and may be a liquid crystal panel, an OLED panel, or the like commonly used in the art.
  • the OLED panel may be an RGB OLED panel having red, green, or blue light emitting diodes or a WHITE OLED panel having a white light emitting diode.
  • the display panel 100 When the display panel 100 is a liquid crystal panel or a white OLED panel, the display panel 100 includes a color filter having a color pattern, and the red, green, and blue color patterns are arranged to correspond to the red, green, and blue sub-pixels, respectively, to implement colors. have.
  • red, green, and blue light emitting diodes are disposed to correspond to red, green, and blue sub-pixels, respectively, to implement colors.
  • the display panel 100 may include a first black matrix layer (not shown) that defines a boundary between pixels.
  • the first black matrix layer defines a boundary between each pixel and each sub-pixel, and improves contrast.
  • the display panel 100 according to the present invention may further include a configuration that is commonly used in the art.
  • the touch panel 200 includes a sensing pattern 220 formed on one side of the viewer side of the substrate 210.
  • the sensing pattern 220 provides information about the X coordinate and the Y coordinate of the touched point. Specifically, when a person's hand or an object comes into contact, a change in capacitance depending on the contact position is transmitted to the driving circuit via the sensing pattern 220, the trace 230, and a pad unit (not shown). Then, the contact position is grasped by the change of the capacitance converted into an electrical signal by the X and Y input processing circuit (not shown) or the like.
  • the pad part may be positioned on one side of the viewer side of the substrate 210 and include one or more pads (not shown) connected to each trace 230 and a flexible circuit board (not shown).
  • the sensing pattern 220 may be applied to a transparent electrode material known in the art without limitation.
  • a transparent electrode material known in the art without limitation.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • IZTO indium zinc tin oxide
  • CTO cadmium tin oxide
  • PEDOT poly (3,4-ethylenedioxythiophene)
  • Carbon nanotubes CNT
  • graphene grapheme
  • the thickness of the sensing pattern 220 is not particularly limited, and may be, for example, 10 to 150 nm independently of each other. If the thickness is less than 10nm, the resistance may be high and the touch sensitivity may be lowered. If the thickness is greater than 150nm, the transmittance may be lowered to increase power consumption.
  • the substrate 210 may be a material that is commonly used in the art without limitation, for example, glass, polyethersulphone (PES), polyacrylate (PAR, polyacrylate), polyether imide (PEI, polyetherimide, polyethylene naphthalate (PEN, polyethyelenen napthalate), polyethylene terephthalate (PET, polyethyelene terepthalate), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate ( PC, polycarbonate), cellulose tri acetate (TAC), cellulose acetate propionate (CAP), and the like.
  • PES polyethersulphone
  • PAR polyacrylate
  • PEI polyether imide
  • PEN polyethylene naphthalate
  • PET polyethyelene terepthalate
  • PPS polyphenylene sulfide
  • PC polycarbonate
  • TAC cellulose tri acetate
  • CAP cellulose acetate propionate
  • the substrate 210 may be one surface of the viewer side of the display panel 100.
  • the trace 230 is disposed above the boundary corresponding area between pixels of the display panel 100 on the one surface, and connects the sensing pattern 220 to the driving circuit.
  • a metal auxiliary pattern 240 which will be described later, is formed on the trace 230.
  • the metal may reflect internal light from a light source of the display device to reduce transmittance of the display device.
  • the trace 230 according to the present invention is disposed above the inter-pixel boundary corresponding region of the display panel 100, and the inter-pixel boundary corresponding region of the display panel 100 is the first black matrix layer (not shown).
  • the transmittance decrease problem caused by the metal auxiliary pattern 240 does not occur.
  • the arrangement between the unit sensing patterns 220 and the arrangement or direction of the traces 230 connecting the unit sensing patterns 220 to the pad unit are not particularly limited, and are considered in consideration of sheet resistance, touch sensitivity, and the like. May be appropriately selected.
  • the sensing pattern 220 is disposed to be spaced apart from the plurality of unit sensing patterns 220, and the trace 230 extends from each unit sensing pattern 220 to the nearest bezel part, so that the sensing part is detected on the bezel part.
  • the pattern 220 may be connected to the driving circuit.
  • the touch panel 200 When the touch panel 200 is applied to an image display device, the touch panel 200 is divided into a display unit, which is an area where an image is displayed, and a bezel unit, which is an edge area where an image is not displayed. ) Is formed in the display portion, and a circuit or the like is formed in the bezel portion.
  • the trace 230 extends from each unit sensing pattern 220 to the nearest bezel portion, the length of the trace formed on the display portion is shortened, thereby lowering the resistance, thereby improving touch sensitivity.
  • the uppermost row of the sensing patterns 220 are illustrated as extending the metal wires to the left and right bezel portions. However, when the upper bezel portions are closer to each other than the bezel portions on the left and right sides, The wiring may extend to the upper bezel portion.
  • the touch panel according to the present invention is adjacent to the trace 230 and the sensing pattern 220 above the boundary corresponding area between the pixels of the display panel 100 on one side of the viewer 210 of the viewer 210. It may further include a second black matrix layer 260 disposed.
  • the second black matrix layer 260 may be selectively included with the first black matrix layer (not shown) of the display panel 100. Like the first black matrix layer (not shown), the second black matrix layer 260 serves to improve contrast.
  • the trace 230 may be applied to a transparent electrode material known in the art without limitation.
  • a transparent electrode material known in the art without limitation.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • IZTO indium zinc tin oxide
  • CTO cadmium tin oxide
  • ITO indium tin oxide
  • ITO indium tin oxide
  • the thickness of the trace 230 is not particularly limited, and may be, for example, 10 to 150 nm. If the thickness is less than 10nm, the resistance may be high and the touch sensitivity may be lowered. If the thickness is greater than 150nm, the transmittance may be lowered to increase power consumption.
  • a metal auxiliary pattern 240 is formed on the trace 230.
  • ITO Indium tin oxide
  • the touch panel 200 of the present invention may be provided with the metal auxiliary pattern 240 to implement excellent electrical conductivity.
  • the thickness of the metal auxiliary pattern 240 is not particularly limited, and may be, for example, 10 nm to 1,000 nm. If the thickness is less than 10 nm, the resistance may be high, and if it is more than 1,000 nm, the manufacturing cost may increase.
  • the metal auxiliary pattern 240 according to the present invention is formed of a metal material.
  • a metal material for example, molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium or alloys thereof.
  • the transmittance of the touch panel may be reduced by reflecting light from the light source.
  • the trace 230 is disposed above the boundary correspondence region between the pixels of the display panel, the metal auxiliary pattern The problem of lowering transmittance by 240 does not occur.
  • the touch sensitivity may be improved by lowering the resistance.
  • the light blocking layer 250 is formed on the metal auxiliary pattern 240.
  • the metal auxiliary pattern 240 When the metal auxiliary pattern 240 is disposed on the trace 230, since the metal has a high reflectance, the metal auxiliary pattern 240 may be recognized by reflecting light from the outside.
  • the touch panel according to the present invention may be a metal auxiliary pattern.
  • the light blocking layer 250 is formed on the pattern 240 to minimize the visibility problem of the metal auxiliary pattern 240.
  • the light blocking layer 250 may be a third black matrix layer or a metal oxide layer.
  • the light blocking layer 250 is a third black matrix layer, it is used for forming a black matrix layer including colorants, alkali-soluble resin binders, polyfunctional monomers, photopolymerization initiators, surfactants, solvents, and other additives commonly used in the art.
  • the composition may be formed by applying and curing the composition on the metal auxiliary pattern 240.
  • the light blocking layer 250 is a metal oxide layer
  • it may be formed of a metal oxide known in the art, for example, made of molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium, and niobium. It may be formed of an oxide of one or more metals selected from the group.
  • the metal oxide layer preferably has a refractive index of 1.0 to 3.1 in terms of minimizing the visibility of the metal auxiliary pattern 240. In such a case, even when a transparent metal oxide other than black is used, the visibility of the metal auxiliary pattern 240 may be minimized regardless of the color.
  • the thickness of the light blocking layer 250 is not particularly limited.
  • the thickness of the light blocking layer 250 may be 10 to 100 nm. If the thickness of the metal oxide layer is less than 10 nm or more than 100 nm, the metal auxiliary pattern 240 may be viewed due to high reflectance.
  • the light blocking layer 250 may have a thickness of about 10 nm to about 5,000 nm. If the thickness of the black matrix layer is less than 10 nm, the metal auxiliary pattern 240 may be visually recognized. If the thickness of the black matrix layer is greater than 5,000 nm, the thickness and the production cost of the touch panel may increase.
  • the metal auxiliary pattern 240 may be formed on the sensing pattern 220. Even in such a case, the metal auxiliary pattern 240 may be disposed above the boundary corresponding area between pixels of the display panel, and may be formed in the above-described material and thickness range. Similarly, the light blocking layer 250 is also formed on the metal auxiliary pattern 240 in the above-described material and thickness range.
  • the touch sensitivity may be further improved, and when connected to the metal auxiliary pattern 240 formed on the trace 230, the touch sensitivity may be improved. Can be maximized.
  • the present invention also provides a method for manufacturing a touch panel.
  • the sensing pattern 220 is formed on one surface of the viewer 210 of the viewer 210.
  • the material of the substrate 210 is not particularly limited, and may be, for example, the substrate 210 formed of a material within the aforementioned range.
  • the method of forming the sensing pattern 220 is not particularly limited, and a method known in the art may be applied.
  • various thin film deposition techniques such as physical vapor deposition (PVD) and chemical vapor deposition (CVD) may be used. It can be formed by. For example, it may be formed by reactive sputtering, which is an example of physical vapor deposition. Or it may be formed using a photolithography method.
  • the sensing pattern 220 may be applied to a transparent electrode material known in the art without limitation.
  • a transparent electrode material known in the art without limitation.
  • ITO indium tin oxide
  • IZO indium zinc oxide
  • ZnO zinc oxide
  • IZTO indium zinc tin oxide
  • CTO cadmium tin oxide
  • ITO indium tin oxide
  • ITO indium tin oxide
  • the thickness of the sensing pattern 220 is not particularly limited, and may be, for example, 10 to 150 nm. If the thickness of the sensing pattern 220 is less than 10 nm, the resistance may be high, and thus the touch sensitivity may be lowered. If the thickness of the sensing pattern 220 is greater than 150 nm, the transmittance may be decreased to increase power consumption.
  • a trace 230 for connecting the sensing pattern 220 to the pad part is formed on the one surface.
  • the sensing pattern 220 is formed to be spaced apart from the plurality of unit sensing patterns 220, and the traces 230 are adjacent to the bezel part from each unit sensing pattern 220. It may extend to connect the sensing pattern 220 to the driving circuit on the bezel. In such a case, the length of the trace formed on the display portion is shortened, thereby lowering the resistance, thereby improving touch sensitivity.
  • the trace 230 may be formed of the same material as the sensing pattern 220, and in such a case, may be simultaneously formed in one process.
  • a metal auxiliary pattern 240 is formed on the trace 230.
  • ITO Indium tin oxide
  • the touch panel of the present invention may be provided with the metal auxiliary pattern 240 to implement excellent electrical conductivity.
  • the method of forming the metal auxiliary pattern 240 is not particularly limited, and a method known in the art may be applied.
  • various thin film deposition methods such as physical vapor deposition (PVD) and chemical vapor deposition (CVD) may be performed.
  • PVD physical vapor deposition
  • CVD chemical vapor deposition
  • it may be formed by reactive sputtering, which is an example of physical vapor deposition.
  • it may be formed using a photolithography method.
  • the thickness of the metal auxiliary pattern 240 is not particularly limited, and may be, for example, 10 nm to 1,000 nm. If the thickness is less than 10nm, the resistance is high, the touch sensitivity may be lowered, and if it is more than 1,000nm, the manufacturing cost may increase.
  • the light blocking layer 250 is formed on the metal auxiliary pattern 240.
  • the metal auxiliary pattern 240 When the metal auxiliary pattern 240 is disposed on the sensing pattern 220, since the metal has a high reflectance, the metal auxiliary pattern 240 may be recognized by reflecting light from the outside, but the touch panel according to the present invention may be made of metal. By forming the light blocking layer 250 on the auxiliary pattern 240, the visibility problem of the metal auxiliary pattern 240 may be minimized.
  • the light blocking layer 250 may be a third black matrix layer or a metal oxide layer.
  • the light blocking layer 250 is a third black matrix layer, it is used for forming a black matrix layer including colorants, alkali-soluble resin binders, polyfunctional monomers, photopolymerization initiators, surfactants, solvents, and other additives commonly used in the art.
  • the composition may be formed by applying and curing the metal auxiliary pattern 240, but is not limited thereto.
  • the light blocking layer 250 is a metal oxide layer, it may be formed by depositing a metal oxide on the metal auxiliary pattern 240 or by oxidizing the surface of the metal auxiliary pattern 240, but is not limited thereto.
  • the light blocking layer 250 is a metal oxide layer
  • a metal oxide known in the art may be used, and for example, molybdenum, silver, aluminum, copper, palladium, gold, platinum, zinc, tin, titanium, and niobium may be used.
  • the oxide of the 1 or more types of metal chosen from is mentioned.
  • the metal oxide layer preferably has a refractive index of 1.0 to 3.1 in terms of minimizing the visibility of the metal auxiliary pattern 240. In such a case, even when a transparent metal oxide other than black is used, the visibility of the metal auxiliary pattern 240 may be minimized regardless of the color.
  • the thickness of the light blocking layer 250 is not particularly limited.
  • the light blocking layer 250 when the light blocking layer 250 is a metal oxide layer, the light blocking layer 250 may be 15 to 100 nm. If the thickness of the metal oxide layer is less than 15 nm or more than 100 nm, the metal auxiliary pattern 240 may be viewed.
  • the thickness may be 20 to 5,000 nm.
  • the auxiliary metal pattern 240 may be visually recognized. If the thickness of the black matrix layer is greater than 5,000 nm, the thickness and the production cost of the touch panel may increase.
  • the touch panel 200 manufactured by including the above steps is disposed such that the traces 230 are positioned above the boundary corresponding area between pixels of the display panel 100.
  • the transmittance of the display device may be reduced by reflecting the internal light from the light source of the display device.
  • the touch panel 200 is disposed on one side of the viewer side of the display panel 100 such that the trace 230 is positioned above the inter-pixel boundary corresponding area of the display panel 100.
  • the region corresponding to the boundary between pixels of the display panel 100 is a region where the internal light is not transmitted through the first black matrix layer (not shown) or the second black matrix layer 260 described later. ), There is no problem of a decrease in transmittance.
  • the present invention may further include forming a second black matrix layer 260 in contact with the trace 230 and the sensing pattern 220 above the inter-pixel boundary corresponding area of the display panel 100.
  • the second black matrix layer 260 may be selectively included with the first black matrix layer (not shown). Like the first black matrix layer (not shown), the second black matrix layer 260 serves to improve contrast.
  • the second black matrix layer 260 and the third black matrix layer may be formed in the same process.
  • the process efficiency is remarkably increased by simultaneously forming them in one process. It can be improved.
  • the specific method is not particularly limited and may be, for example, a method of applying the composition for forming the black matrix layer on the upper side of the inter-pixel boundary corresponding region and the metal auxiliary pattern of the display panel.
  • touch panel may be formed through additional processes known in the art.
  • the sensing pattern 220 is formed on one side of the viewer side of the display panel 100.
  • the sensing pattern 220 may be formed by the same method as described above, and may be formed of a thickness and a material in the above-described range.
  • the display panel 100 may further include a separate substrate 210 on one side of the viewer.
  • the substrate 210 may be a substrate 210 having a material in the above range.
  • a trace 230 for connecting the sensing pattern 220 to the pad part is formed on an upper side of the pixel corresponding area between the pixels of the display panel 100.
  • the trace 230 may be formed by the same method as described above, and may be formed of a thickness and a material in the aforementioned range.
  • the trace 230 may be formed of the same material as the sensing pattern 220, and in this case, the sensing pattern 220 and the trace 230 may be simultaneously formed in one process.
  • the metal auxiliary pattern 240 is formed on the trace 230.
  • the metal auxiliary pattern 240 may be formed using a method, a thickness, and a material in the above-described range.
  • the light blocking layer 250 is formed on the metal auxiliary pattern 240.
  • the light blocking layer 250 is a third black matrix layer or a metal oxide layer, and may be formed using a method, a thickness, and a material in the above-described range.
  • the method may further include forming a second black matrix layer 260 in contact with the trace 230 and the sensing pattern 220 above the inter-pixel boundary corresponding area of the display panel 100.
  • the second black matrix layer 260 may be selectively included with the first black matrix layer (not shown). Like the first black matrix layer (not shown), the second black matrix layer 260 serves to improve contrast.
  • the second black matrix layer 260 and the third black matrix layer may be formed in the same process.
  • the process efficiency is remarkably increased by simultaneously forming them in one process. It can be improved.
  • touch panel may be formed through additional processes known in the art.
  • a pattern was formed of 35 nm thick indium tin oxide (ITO) (refractive index 1.89) on a glass substrate (refractive index: 1.51), and a metal pattern of 300 nm thick was formed on moltendenum (refractive index 3.78) on the ITO pattern. Thereafter, a light blocking layer was formed of niobium oxide (Nb 2 O 5 , a refractive index of 2.28) on the metal pattern to prepare a laminate shown in FIG. 6.
  • ITO indium tin oxide
  • a pattern was formed of 35 nm thick indium tin oxide (ITO) (refractive index 1.89) on a glass substrate (refractive index 1.51), and a metal pattern of 300 nm thick was formed on moltendenum (refractive index 3.78) on the ITO pattern.
  • ITO indium tin oxide
  • a laminate shown in FIG. 6 was manufactured in the same manner as in Preparation Example 1, except that the light blocking layer was formed of Al 2 O 3 to Al 2 O 5 (refractive index 1.66).
  • a laminate shown in FIG. 6 was manufactured in the same manner as in Preparation Example 1, except that the light blocking layer was formed of Cu 2 O to Cu 4 O (refractive index 3.10).
  • a laminate as shown in FIG. 7 was prepared in the same manner as in Preparation Example 1, except that the light blocking layer was not formed.
  • Reference Examples 1 to 15 were prepared to measure the resistance of the ITO pattern.
  • the laminate was deposited on a glass substrate with an ITO pattern having a thickness of 5 cm x 30 ⁇ m, and a molybdenum pattern was deposited with a thickness as shown in Table 1 below.
  • the reflectance in the wavelength range of 400 nm to 700 nm at the A position shown in FIGS. 6 and 7 was measured by ST-4000 (KMAC).
  • the laminate of Production Example 5 had a very high reflectance at the A position.
  • trace 240 metal auxiliary pattern

Abstract

La présente invention concerne un panneau tactile et, plus particulièrement, un panneau tactile disposé du côté visible d'un panneau d'affichage, le panneau tactile comportant: un motif de détection formé sur une surface du côté visible d'un substrat; une trace disposée sur la surface en question au-dessus d'une zone correspondant à une frontière inter-pixels du panneau d'affichage, de façon à relier le motif de détection à une partie de plage; un motif auxiliaire métallique formé sur la trace; et une couche d'occultation de lumière formée sur le motif auxiliaire métallique, le panneau tactile présentant ainsi non seulement une sensibilité tactile améliorée et un excellent facteur de transmission, mais étant également capable de minimiser le problème de la visibilité.
PCT/KR2015/004581 2014-05-15 2015-05-08 Panneau tactile WO2015174686A1 (fr)

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KR1020140058516A KR20150131610A (ko) 2014-05-15 2014-05-15 터치 패널
KR10-2014-0058516 2014-05-15

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KR102277792B1 (ko) * 2021-01-25 2021-07-15 동우 화인켐 주식회사 터치 패널 및 이를 갖는 적층체
CN113391485B (zh) * 2021-06-29 2022-09-23 昆山龙腾光电股份有限公司 阵列基板及制作方法、显示面板

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TW201546680A (zh) 2015-12-16

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