Source: https://patents.google.com/patent/JP5418130B2/en
Timestamp: 2020-02-28 12:15:50
Document Index: 774699673

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JP5418130B2 - Capacitive touch panel sensor and method for manufacturing the touch panel sensor - Google Patents
Capacitive touch panel sensor and method for manufacturing the touch panel sensor Download PDF
JP5418130B2
JP5418130B2 JP2009238575A JP2009238575A JP5418130B2 JP 5418130 B2 JP5418130 B2 JP 5418130B2 JP 2009238575 A JP2009238575 A JP 2009238575A JP 2009238575 A JP2009238575 A JP 2009238575A JP 5418130 B2 JP5418130 B2 JP 5418130B2
JP2009238575A
JP2011086122A (en
野 哲 朗 矢
嶋 雅 生 福
2009-10-15 Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
2009-10-15 Priority to JP2009238575A priority Critical patent/JP5418130B2/en
2011-04-28 Publication of JP2011086122A publication Critical patent/JP2011086122A/en
2014-02-19 Publication of JP5418130B2 publication Critical patent/JP5418130B2/en
The present invention relates to a capacitive touch panel sensor and a method for manufacturing the touch panel sensor. Moreover, this invention relates to the manufacturing method of the color filter provided with the said touch panel sensor, and the said color filter. Furthermore, the present invention relates to a display device provided with the color filter.
As a touch panel sensor for realizing a touch panel function, a capacitive touch panel sensor is known. In a capacitively coupled touch panel sensor, a change in capacitance generated when an external conductor such as a human finger contacts (approaches) the touch panel sensor is used to detect the external conductor such as a human finger on the touch panel sensor. Detect position. Capacitive touch panel sensors include a surface type and a projection type. The projection type is attracting attention because it is suitable for multi-touch recognition (multi-point recognition).
A projected capacitive touch panel sensor generally includes a transparent substrate, a number of x-direction transparent electrode units arranged in the x direction on the upper surface of the transparent substrate, and a lower surface of the transparent substrate. a plurality of y-direction transparent electrode units provided so as to be arranged in the y-direction. In this case, adjacent x-direction transparent electrode units are connected in the x-direction by the x-direction connecting portion, and adjacent y-direction transparent electrode units are connected in the y-direction by the y-direction connecting portion.
A projection capacitive touch panel sensor in which an x-direction transparent electrode unit and a y-direction transparent electrode unit are formed on the same plane has also been proposed (for example, Patent Document 1). The touch panel sensor described in Patent Document 1 includes a transparent base material, a large number of x-direction transparent electrode units arranged in the x direction on the upper surface of the transparent base material, and an x-direction transparent electrode unit on the upper surface of the transparent base material. A large number of transparent electrodes in the y direction. Among these, adjacent x-direction transparent electrode units are connected in the x-direction by an x-direction connecting portion provided on the same plane as the x-direction transparent electrode unit and the y-direction transparent electrode unit. Adjacent y-direction transparent electrode units are connected in the y-direction by a y-direction connection portion disposed above the x-direction connection portion via an insulating layer. In the touch panel sensor described in Patent Document 1, a transparent electrode material having transparency, such as indium tin oxide, is used as the y-direction connecting portion.
In addition, among the many x-direction transparent electrode units and y-direction transparent electrode units, the x-direction transparent electrode unit and the y-direction transparent electrode unit located at the periphery include an outer periphery for transmitting a current flowing through the touch panel sensor to an external control unit. Wiring is provided. The region where the outer peripheral wiring is provided is a non-display region of the liquid crystal display device when the liquid crystal display device is manufactured by combining the touch panel sensor with a TFT substrate or the like, and therefore the outer peripheral wiring is not required to be transparent. Therefore, a metal material with high electrical conductivity, such as silver, is used as the material for the peripheral wiring.
Utility Model Registration No. 3144241
When the touch panel sensor described in Patent Document 1 is manufactured, the transparent electrode material, the insulating layer, and the y-direction connection portion for configuring the x-direction transparent electrode unit, the y-direction transparent electrode unit, and the x-direction connection portion are configured. For this purpose, a second transparent electrode material and a metal material for forming the outer peripheral wiring are sequentially formed on the transparent substrate. Thus, since four layers are formed on a transparent substrate, the process is complicated.
An object of this invention is to provide the touchscreen sensor which can solve such a subject effectively, and the manufacturing method of a touchscreen sensor.
The first capacitive touch panel sensor according to the present invention is arranged so as to be aligned in the x-direction and the y-direction on the upper side of the transparent base material that extends in a plane, and in the x-direction via an x-direction connection portion. A large number of transparent electrode units composed of connected x-direction transparent electrode units, and a y-direction transparent electrode unit located between the x-direction transparent electrode units, and an x-direction transparent electrode unit positioned at the periphery of these many transparent electrode units And the peripheral wiring connected to the y-direction transparent electrode unit, and the x-direction connecting portion is formed on the same plane as the transparent electrode unit using the same material as that of the transparent electrode unit, and is adjacent to the y-direction. The transparent electrode units are connected in the y direction by a y direction connecting portion disposed via an insulating layer above the x direction connecting portion, and the y direction connecting portion is made of the same material as that of the peripheral wiring. With wiring A capacitive touch panel sensor, characterized in that it is made.
The first touch panel sensor manufacturing method according to the present invention includes a step of preparing the transparent substrate, a step of providing a transparent electrode material on the upper surface of the transparent substrate, and patterning the provided transparent electrode material. A step of forming the x-direction transparent electrode unit, the y-direction transparent electrode unit and the x-direction connection portion, a step of forming the insulating layer on the x-direction connection portion, and a transparent substrate from above the transparent substrate. A method for manufacturing a touch panel sensor, comprising: providing a conductive material on a material; and patterning the provided conductive material to form the outer peripheral wiring and the y-direction connecting portion. It is.
A second capacitive touch panel sensor according to the present invention is arranged so as to be aligned in the x direction and the y direction on the upper side of the transparent base material extending in a planar shape, and in the x direction via the x direction connecting portion. A large number of transparent electrode units composed of connected x-direction transparent electrode units, and a y-direction transparent electrode unit located between the x-direction transparent electrode units, and an x-direction transparent electrode unit positioned at the periphery of these many transparent electrode units And an outer peripheral wiring connected to the y-direction transparent electrode unit, the x-direction connection portion is formed using the same material as the material of the transparent electrode unit, and adjacent y-direction transparent electrode units are arranged in the x-direction. It is connected in the y direction by a y direction connecting portion disposed below the connecting portion via an insulating film, and the y direction connecting portion is formed together with the outer peripheral wiring using the same material as that of the outer peripheral wiring. To A capacitive touch panel sensor.
A second touch panel sensor manufacturing method according to the present invention includes a step of preparing the transparent substrate, a step of providing a conductive material on the upper surface of the transparent substrate, and patterning the provided conductive material. A step of forming the outer peripheral wiring and the y-direction connection portion, a step of forming the insulating layer on the y-direction connection portion, a step of providing a transparent electrode material on the transparent substrate from above the transparent substrate, And patterning the provided transparent electrode material to form the x-direction transparent electrode unit, the y-direction transparent electrode unit, and the x-direction connecting portion. It is.
In the first and second touch panel sensor manufacturing methods according to the present invention, the conductive material may be made of a metal material.
A color filter with a touch panel function according to the present invention includes the touch panel sensor described above, a black matrix layer provided on an upper side or a lower side of the transparent substrate of the touch panel sensor, and a plurality of colored layers provided between the black matrix layers. And.
In the color filter according to the present invention, preferably, the y-direction connecting portion of the touch panel sensor overlaps the black matrix layer when viewed from the normal direction of the color filter.
A method for producing a color filter according to the present invention includes a step of forming a touch panel sensor by the method for producing a touch panel sensor described above, a step of forming a black matrix layer on the upper side or the lower side of the transparent substrate of the touch panel sensor, and a black matrix. And a step of forming a colored layer of a plurality of colors between the layers.
In the color filter manufacturing method according to the present invention, preferably, in the black matrix layer forming step, the black-direction connection portion of the touch panel sensor is overlapped with the black matrix layer when viewed from the normal direction of the color filter. A matrix layer is formed.
A display device with a touch panel function according to the present invention includes the above-described color filter and a display substrate provided so as to face the color filter, and the y-direction connection portion of the touch panel sensor of the color filter is a method of a color filter. It is characterized by overlapping with the black matrix layer of the color filter when viewed from the line direction.
According to the first capacitive touch panel sensor of the present invention, adjacent y-direction electrode units are connected in the y-direction by the y-direction connecting portion disposed via the insulating layer above the x-direction connecting portion. The y-direction connecting portion is formed together with the peripheral wiring using the same material as that of the peripheral wiring. In this way, by forming the y-direction connection portion together with the outer peripheral wiring, a touch panel sensor having a simpler configuration can be provided.
According to the first method for manufacturing a capacitive touch panel sensor of the present invention, the step of preparing the transparent substrate, the step of providing a transparent electrode material on the upper surface of the transparent substrate, and the provided transparent Patterning an electrode material to form the x-direction transparent electrode unit, the y-direction transparent electrode unit, and the x-direction connection portion; forming the insulating layer on the x-direction connection portion; A touch panel sensor is manufactured by providing a conductive material on a transparent base material from above the material, and patterning the provided conductive material to form the outer peripheral wiring and the y-direction connection portion. be able to. In this way, by forming the y-direction connection portion together with the outer peripheral wiring, the touch panel sensor can be manufactured by a simpler process.
According to the second capacitive touch panel sensor of the present invention, adjacent y-direction electrode units are connected in the y-direction by the y-direction connecting portion disposed via the insulating layer below the x-direction connecting portion. The y-direction connecting portion is formed together with the peripheral wiring using the same material as that of the peripheral wiring. In this way, by forming the y-direction connection portion together with the outer peripheral wiring, a touch panel sensor having a simpler configuration can be provided.
According to the second method for manufacturing a capacitive touch panel sensor of the present invention, the step of preparing the transparent substrate, the step of providing a conductive material on the upper surface of the transparent substrate, and the provided conductivity Patterning a conductive material to form the outer peripheral wiring and the y-direction connection part, forming the insulating layer on the y-direction connection part, and transparent electrode on the transparent base material from above the transparent base material A touch panel sensor is manufactured by providing a material and patterning the provided transparent electrode material to form the x-direction transparent electrode unit, the y-direction transparent electrode unit, and the x-direction connection portion. be able to. In this way, by forming the y-direction connection portion together with the outer peripheral wiring, the touch panel sensor can be manufactured by a simpler process.
The display device with a touch panel function of the present invention includes a color filter having the touch panel sensor described above and a display substrate provided to face the color filter. Among these, in the color filter, the y-direction connecting portion of the touch panel sensor overlaps with the black matrix layer of the color filter when viewed from the normal direction of the color filter. For this reason, it can prevent that the display characteristic of a display apparatus is impaired by the y direction connection part.
FIG. 1A is a plan view showing a touch panel sensor according to the first embodiment, and FIG. 1B is a longitudinal sectional view of the touch panel sensor of FIG. 1A viewed from the Ib-Ib direction. FIG.1 (c) is the longitudinal cross-sectional view which looked at the touch-panel sensor of Fig.1 (a) from the Ic-Ic direction. 2A is a longitudinal sectional view showing the liquid crystal display device according to the first embodiment of the present invention, and FIG. 2B is a color filter of the liquid crystal display device of FIG. 2A indicated by arrows IIb-IIb. FIG. 2C is a view of the display substrate of the liquid crystal display device of FIG. 2A as viewed from arrows IIc-IIc. FIG. 3A is a diagram for explaining a method of manufacturing the touch panel sensor according to the first embodiment. FIG. 3B is a diagram for explaining a method of manufacturing the touch panel sensor according to the first embodiment. FIG. 3C is a diagram for explaining a method of manufacturing the touch panel sensor according to the first embodiment. FIG. 3D is a diagram for explaining a method of manufacturing the touch panel sensor according to the first embodiment. FIG. 3E is a diagram for explaining a method of manufacturing the touch panel sensor according to the first embodiment. 4A is a plan view showing a touch panel sensor in a comparative example, FIG. 4B is a longitudinal sectional view of the touch panel sensor of FIG. 4A viewed from the IVb-IVb direction, and FIG. FIG. 5 is a longitudinal sectional view of the touch panel sensor of FIG. 4A as viewed from the direction IVc-IVc. FIG. 5A is a diagram for explaining a method of manufacturing a touch panel sensor in a comparative example. FIG. 5B is a diagram for explaining a method of manufacturing a touch panel sensor in a comparative example. FIG. 5C is a diagram for explaining a method of manufacturing a touch panel sensor in a comparative example. FIG. 5D is a diagram for explaining a method of manufacturing a touch panel sensor in a comparative example. FIG. 6A is a plan view showing a touch panel sensor in a modification of the first embodiment, and FIG. 6B is a view of the touch panel sensor of FIG. 6A from the VIb-VIb direction. FIG. 6C is a longitudinal sectional view of the touch panel sensor of FIG. 6A viewed from the VIc-VIc direction. FIG. 7A is a plan view showing the touch panel sensor according to the second embodiment, and FIG. 7B is a longitudinal sectional view of the touch panel sensor of FIG. 7A viewed from the VIIb-VIIb direction. FIG.7 (c) is the longitudinal cross-sectional view which looked at the touch-panel sensor of Fig.7 (a) from the VIIc-VIIc direction. FIG. 8A is a diagram for explaining a method of manufacturing the touch panel sensor according to the second embodiment. FIG. 8B is a diagram for explaining a method of manufacturing the touch panel sensor according to the second embodiment. FIG. 8C is a diagram for explaining a method of manufacturing the touch panel sensor according to the second embodiment. FIG. 8D is a diagram for explaining a method of manufacturing the touch panel sensor according to the second embodiment. FIG. 8E is a diagram for explaining a method of manufacturing the touch panel sensor according to the second embodiment. 9A is a plan view showing a touch panel sensor according to the third embodiment, and FIG. 9B is a longitudinal sectional view of the touch panel sensor of FIG. 9A viewed from the IXb-IXb direction. 9 (c) is a longitudinal sectional view of the touch panel sensor of FIG. 9 (a) viewed from the IXc-IXc direction. FIG. 10A is a longitudinal sectional view showing a liquid crystal display device according to a third embodiment of the present invention, and FIG. 10B is a color filter of the liquid crystal display device of FIG. FIG. 10C is a view of the display substrate of the liquid crystal display device of FIG. 10A as viewed from arrows Xc-Xc.
First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, the entire liquid crystal display device (display device) 60 in the present embodiment will be described with reference to FIG. Although the liquid crystal display device 60 is shown as an example of the display device in the present embodiment, the present invention is not limited to this, and other display devices including color filters such as an organic EL display and a plasma display are used. In this case, the same effect as that of the liquid crystal display device 60 can be obtained by applying the present invention.
Liquid Crystal Display Device As shown in FIG. 2A, a liquid crystal display device 60 with a touch panel function includes a color filter 30 with a touch panel function, and a TFT substrate (display substrate) 50 provided to face the color filter 30. It has. A light source (not shown) that emits light toward the TFT substrate 50 is provided below the TFT substrate 50. Further, as shown in FIG. 2A, a liquid crystal 40 is filled between the color filter 30 and the TFT substrate 50, and the liquid crystal 40 is sealed with a sealing material 41.
Further, a protective cover (not shown) having translucency can be provided on the upper side (observation side) of the liquid crystal display device 60. The protective cover is for protecting a touch panel sensor (described later) of the color filter 30 and the liquid crystal display device 60, and functions as an input surface (touch surface, contact surface) of the liquid crystal display device 60 with a touch panel function.
2C shows a case where the TFT substrate 50 of the liquid crystal display device 60 shown in FIG. 2A is viewed from the normal direction of the color filter 30, that is, the direction of arrows IIc-IIc shown in FIG. FIG. As shown in FIG. 2C, the TFT substrate 50 includes a plurality of transparent electrode portions 52 that control the voltage applied to the liquid crystal 40 and a wiring portion 53 that applies a control voltage to the transparent electrode portion 52. ing. Among these, each of the transparent electrode portions 52 corresponds to a unit pixel of the display device 60.
Color Filter Next, the color filter 30 will be described with reference to FIG. 2B shows a case where the color filter 30 of the liquid crystal display device 60 shown in FIG. 2A is viewed from the normal direction of the color filter 30, that is, the direction of arrows IIb-IIb shown in FIG. FIG. As shown in FIG. 2B, the color filter 30 includes a transparent base material 11, a black matrix layer 31 provided on the lower side (TFT substrate 50 side) of the transparent base material 11, and a black matrix layer 31. A plurality of colored layers 32 provided and a touch panel sensor layer 12 provided on the upper side (observation side) of the transparent substrate 11 are provided. As will be described later, a touch panel sensor is composed of the transparent substrate 11 and the touch panel sensor layer 12.
Among these, the material of the transparent base material 11 is not particularly limited as long as the light emission of the TFT substrate 50 can be taken out and moisture and oxygen can be effectively blocked. For example, glass, polymer, etc. excellent in light transmittance, stability and durability can be used.
The black matrix layer 31 of the color filter 30 is disposed so as to overlap the wiring portion 53 of the TFT substrate 50 described above when viewed from the normal direction of the color filter 30. The black matrix layer 31 is formed by forming a metal thin film of chromium or the like having a thickness of about 1000 to 2000 mm by sputtering or vacuum deposition, and patterning the thin film. Forming a resin layer made of polyimide resin, acrylic resin, epoxy resin or the like containing particles, patterning this resin layer, and photosensitive containing light-shielding particles such as carbon fine particles or metal oxides A light-shielding material such as a light-sensitive resin layer formed and patterned by patterning the photosensitive resin layer can be used. The thickness of the black matrix layer 31 is appropriately adjusted according to the required light shielding properties.
The multi-colored colored layer 32 adjusts the color of light that has passed through the TFT substrate 50 and the liquid crystal 40, and includes at least a red colored layer, a blue colored layer, and a green colored layer.
Among these, examples of the colorant used in the red colored layer include perylene pigments, lake pigments, azo pigments, quinacridone pigments, anthraquinone pigments, anthracene pigments, and isoindoline pigments. These pigments may be used alone or in combination of two or more.
Examples of the colorant used in the blue colored layer include copper phthalocyanine pigments, anthraquinone pigments, indanthrene pigments, indophenol pigments, cyanine pigments, dioxazine pigments, and the like. These pigments may be used alone or in combination of two or more.
Examples of the colorant used in the green coloring layer include phthalocyanine pigments such as halogen polysubstituted phthalocyanine pigments or halogen polysubstituted copper phthalocyanine pigments, triphenylmethane basic dyes, isoindoline pigments, and isoindolinone pigments. And pigments. These pigments or dyes may be used alone or in combination of two or more.
The colored layers 32 of a plurality of colors are not limited to the above-described red colored layer, blue colored layer, and green colored layer, and other colored layers may be included.
A protective film (not shown) may be provided between the black matrix layer 31 and the colored layer 32 and the liquid crystal 40. Examples of the material for the protective film include a transparent material made of an oxide or oxynitride of silicon, aluminum, zinc or tin, or an organic insulating film such as an acrylic resin. Further, a common transparent electrode (not shown) for pixel display may be provided on the surfaces of the black matrix layer 31 and the colored layer 32. Furthermore, a spacer (not shown) may be provided on the black matrix layer 31 to hold a gap between the color filter 30 and the TFT substrate 50.
Touch Panel Sensor Next, the touch panel sensor 10 will be described with reference to FIGS. 1 (a), (b), and (c). As shown in FIGS. 1A, 1B, and 1C, the touch panel sensor 10 is arranged so as to be aligned in the x direction and the y direction on the transparent base material 11 extending in a planar shape and the upper surface 11a of the transparent base material 11. A plurality of transparent electrode units 13 comprising an x-direction transparent electrode unit 13 connected in the x-direction via an x-direction connecting portion 14 and a y-direction transparent electrode unit 15 positioned between the x-direction transparent electrode units 13; 15, and an outer peripheral wiring 17 connected to the x-direction transparent electrode unit 13 and the y-direction transparent electrode unit 15 located at the periphery of the large number of transparent electrode units 13, 15. As shown in FIG. 1A, each of the x-direction transparent electrode unit 13 and the y-direction transparent electrode unit 15 has a substantially square shape, and the dimensions of the x-direction transparent electrode unit 13 and the y-direction transparent electrode unit 15 are as follows. Is determined by the required resolution for the finger or pen detected by the touch panel sensor 10 and is, for example, 5 mm × 5 mm.
Here, as shown in FIG. 1 (a), the x-direction transparent electrode unit 13 and the outer peripheral wiring 17 positioned at the periphery of the large number of transparent electrode units 13 and 15 are the x-direction terminal portions of the x-direction transparent electrode unit 13. 13a is connected. Similarly, the y-direction transparent electrode unit 15 and the outer peripheral wiring 17 positioned at the periphery of the large number of transparent electrode units 13 and 15 are connected via the y-direction terminal portion 15 a of the y-direction transparent electrode unit 15. Electrical signals from the x-direction transparent electrode unit 13 and the y-direction transparent electrode unit 15 are transmitted to the control unit (not shown) of the display device 60 via the outer peripheral wiring 17.
Further, as shown in FIGS. 1B and 1C, the x-direction connecting portion 14 is the same as the transparent electrode units 13 and 15 using a transparent electrode material that is the same material as the transparent electrode units 13 and 15. It is formed on a plane. On the other hand, adjacent y-direction electrode units 15 are connected in the y-direction by a y-direction connecting portion 16 disposed via an insulating layer 18 above the x-direction connecting portion 14 as shown in FIG. ing. The y-direction connecting portion 16 is formed together with the outer peripheral wiring 17 using the same material as that of the outer peripheral wiring 17, and therefore, as described later, the y-direction connecting portion 16 and the outer peripheral wiring 17 are separated from each other. Compared with the case of forming in this way, the y-direction connecting portion 16 and the outer peripheral wiring 17 can be formed more easily. The transparent electrode units 13 and 15, the x-direction connection portion 14, the y-direction connection portion 16, the outer peripheral wiring 17, and the insulating layer 18 constitute the touch panel sensor layer 12 described above.
For convenience of explanation, the display of the insulating layer 18 is omitted in FIG.
In the touch panel sensor 10 shown in FIG. 1A, an area including the transparent electrode units 13, 15, the x-direction connection part 14, and the y-direction connection part 16 (area surrounded by a dotted line in FIG. 1A) is the observation side. Is a display area 20A through which light reaching an observer (not shown) passes, and an area outside the display area 20A is an outer periphery through which light to an observer (not shown) on the observation side does not pass. It is a non-display area 20B. As shown in FIG. 1A, the outer peripheral wiring 17 is provided in the non-display area 20B, and therefore the display of the liquid crystal display device 60 is not hindered by the outer peripheral wiring 17.
Next, each element constituting the touch panel sensor 10 will be described in detail.
Transparent electrode unit and x-direction connection portion First, the x-direction transparent electrode unit 13, the x-direction connection portion 14, and the y-direction transparent electrode unit 15 will be described in detail. As described above, the transparent electrode units 13 and 15 and the x-direction connecting portion 14 are formed on the same plane by the same transparent electrode material. As the transparent electrode material, a material having transparency and required conductivity is used. For example, as transparent electrode materials, indium tin oxide (ITO), zinc oxide, indium oxide, antimony-added tin oxide, fluorine-added tin oxide, aluminum-added zinc oxide, potassium-added zinc oxide, silicon-added zinc oxide, zinc oxide- Metal oxides such as tin oxide, indium oxide-tin oxide, and zinc oxide-indium oxide-magnesium oxide can be used. Two or more of these metal oxides may be combined.
The method for providing the transparent electrode material on the transparent substrate 11 is not particularly limited, and a sputtering method, a vacuum deposition method, an ion plating method, a CVD method, a coating method, a printing method, or the like can be used. In addition, the method of patterning the provided transparent electrode material to form the transparent electrode units 13 and 15 and the x-direction connection portion 14 is not particularly limited, and various patterning methods such as a photolithography method are appropriately used. Can do.
It will be described in detail the outer peripheral wiring then the outer peripheral wiring 17. As described above, the outer peripheral wiring 17 is for transmitting electrical signals from the x-direction transparent electrode unit 13 and the y-direction transparent electrode unit 15 to the control unit of the display device 60. A material with high conductivity is preferred. Further, as described above, the outer peripheral wiring 17 is provided in the non-display area 20B. Therefore, the material of the outer peripheral wiring 17 does not have to be transparent. For this reason, a metal material having a higher electric conductivity than that of the above-described transparent electrode material is preferably used as the material of the outer peripheral wiring 17. As the metal material, for example, a metal such as aluminum, molybdenum, palladium, silver, chromium, copper, an alloy containing them as a main component, or a laminate including these alloys can be used.
y-direction connection portion Next, the y-direction connection portion 16 will be described in detail. As described above, the y-direction connection portion 16 is formed of the same material as the material of the outer peripheral wiring 17, that is, a metal material. For this reason, the dimension (width) in the x-direction of the y-direction connection portion 16 is small. Even so, the adjacent y-direction transparent electrode units 15 can be connected with low resistance. Here, the dimension (width) in the x direction of the y-direction connecting portion 16 is in the range of 5 to 20 μm, for example, and the dimension (length) in the y direction is in the range of 20 to 500 μm, for example.
Thus, by forming the y-direction connection portion 16 from the same metal material as that of the outer peripheral wiring 17, the y-direction connection portion 16 is formed compared to the case of forming the y-direction connection portion 16 from a transparent electrode material such as ITO. The width of 16 can be reduced. For this reason, the display of the liquid crystal display device 60 is hardly hindered by the y-direction connecting portion 16.
Preferably, as shown in FIGS. 1B and 1C, the y-direction connecting portion 16 is provided so as to overlap the black matrix layer 31 of the color filter 30 when viewed from the normal direction of the color filter 30. This can further prevent the display of the liquid crystal display device 60 from being hindered by the y-direction connecting portion 16. In this case, the width of the black matrix layer 31 in the x direction is appropriately set according to the thickness of the transparent substrate 11, the width of the y direction connection portion 16 in the x direction, the viewing angle of the liquid crystal display device 60, and the like. For example, it is in the range of 5 to 100 μm.
Insulating Layer Next, the insulating layer 18 will be described in detail. As a material for forming the insulating layer 18, a material having transparency and electrical insulation is used, and for example, an acrylic resin is used. As will be described in detail later, a hole 18a penetrating in the vertical direction is formed in a portion corresponding to the end 15b in the y direction of the y-direction transparent electrode unit 15 in the insulating layer 18 (see FIG. 1C). ). In this hole 18a, a y-direction connecting portion 16 is provided as shown in FIG. 1C, and thus the y-direction connecting portion 16 and the y-direction transparent electrode unit are provided through the hole 18a of the insulating layer 18. 15 is connected.
Next, the operation of the present embodiment having such a configuration will be described. Here, the manufacturing method of the touch panel sensor 10 and the color filter 30 will be described.
Method for Manufacturing Touch Panel Sensor First, a method for manufacturing the touch panel sensor 10 will be described with reference to FIGS. 3A (a) (b) (c) to 3E (a) (b) (c). 3A (a) (b) (c) to FIG. 3E (a) (b) (c), the figure shown in (a) is a plan view showing a touch panel sensor during manufacture. (B) is a longitudinal sectional view of the touch panel sensor during manufacture of (a) as viewed from the direction of IIIAb-IIIAb to IIIEb-IIIEb, and FIG. It is the longitudinal cross-sectional view which looked at the touch panel sensor under manufacture of (a) from the IIIAc-IIIAc-IIIEc-IIIEc direction, respectively.
First, the transparent base material 11 is prepared, and then the transparent electrode material 21 is provided on the upper surface 11a of the transparent base material 11 as shown in FIGS. 3A (a) (b) (c). The method for providing the transparent electrode material 21 is not particularly limited. For example, the transparent electrode material 21 is provided on the upper surface 11a of the transparent substrate 11 by sputtering.
Next, the transparent electrode material 21 provided on the upper surface 11a of the transparent base material 11 is patterned, and as shown in FIG. The transparent electrode units 13 and 15 and the x-direction connecting portion 14 are formed. Here, as shown in FIGS. 3B (a) and 3 (b), the x-direction transparent electrode units 13 are arranged in the x-direction, and the adjacent x-direction transparent electrode units 13 are connected to each other in the x-direction connection portion 14. Connected by. Further, as shown in FIGS. 3B (a) and 3 (c), the y-direction transparent electrode units 15 are arranged in the y-direction and are positioned between the x-direction transparent electrode units 13 and between the x-direction connection portions 14. .
The method for patterning the transparent electrode material 21 is not particularly limited, and various known patterning methods can be used. For example, a photolithography method can be used. In this case, a photosensitive layer (not shown) is first formed on the transparent electrode material 21, and then a predetermined pattern corresponding to the pattern of the transparent electrode units 13, 15 and the x-direction connecting portion 14 is formed on the photosensitive layer. A mask (not shown) is provided. Thereafter, the photosensitive layer is irradiated with exposure light (for example, ultraviolet rays) through a mask, and then the photosensitive layer is developed. As a result, a photosensitive layer having a pattern corresponding to the pattern of the transparent electrode units 13 and 15 and the x-direction connecting portion 14 is formed on the transparent electrode material 21.
Next, the part which is not covered with the photosensitive layer among the transparent electrode materials 21 on the upper surface 11a of the transparent base material 11 is removed by etching. At this time, a liquid capable of dissolving the transparent electrode material 21 is used as the etching liquid. For example, when the transparent electrode material 21 is made of ITO, ferric chloride or the like is used as an etching solution.
Thereafter, the photosensitive layer remaining on the transparent electrode units 13 and 15 and the x-direction connecting portion 14 is removed with an alkaline solution such as 2% potassium hydroxide. As a result, the transparent electrode units 13 and 15 and the x-direction connecting portion 14 shown in FIGS. 3B (a), (b) and (c) are formed.
Next, as shown in FIGS. 3C (a), (b), and (c), an insulating layer 18 is formed on the transparent electrode units 13 and 15 and the x-direction connecting portion 14. Here, as shown in FIG. 3C (a), the insulating layer 18 includes the transparent electrode units 13 and 15 and the x direction terminal portion 13a of the x direction transparent electrode unit 13 and the y direction transparent electrode unit 15 of the x direction connecting portion 14. The y-direction terminal portion 15a is formed so as not to be covered. As shown in FIGS. 3C (a) and 3 (c), in the insulating layer 18, a hole 18a penetrating in the vertical direction is formed at a position corresponding to the end portion 15b in the y direction of the y direction transparent electrode unit 15. Yes.
The method for forming the insulating layer 18 is not particularly limited. For example, as in the case where the transparent electrode units 13 and 15 and the x-direction connecting portion 14 are formed, patterning by sputtering and photolithography is performed. By performing the above, the insulating layer 18 described above can be formed.
Next, a conductive material 22 made of a metal material is provided on the transparent substrate 11 from above the transparent substrate 11. In this case, as shown in FIGS. 3D (a), (b), and (c), an area corresponding to the outer peripheral non-display area 20B, the x-direction terminal portion 13a, and the y-direction terminal portion of the upper surface 11a of the transparent substrate 11 15 a, the end 15 b in the y direction of the transparent electrode unit 15 in the y direction, and the insulating layer 18 are in contact with the conductive material 22. On the other hand, the x-direction transparent electrode unit 13 and the x-direction connection portion 14 are covered with the insulating layer 18 from above, and therefore the x-direction transparent electrode unit 13 and the x-direction connection portion 14 are in contact with the conductive material 22. There is no.
The method for providing the conductive material 22 is not particularly limited, and the conductive material 22 is provided on the transparent substrate 11 by, for example, sputtering.
Next, the conductive material 22 provided on the transparent substrate 11 is patterned to form both the outer peripheral wiring 17 and the y-direction connecting portion 16 as shown in FIGS. 3E (a) (b) (c). To do. Here, the outer peripheral wiring 17 is arranged in a region corresponding to the outer peripheral non-display area 20B in the upper surface 11a of the transparent base material 11, and the outer peripheral wiring 17 is as shown in FIGS. 3E (b) and 3 (c). The x-direction terminal portion 13a and the y-direction terminal portion 15a are connected to each other. 3E (b) and 3 (c), the y-direction connection portion 16 is connected to the end portion 15b in the y-direction of the y-direction transparent electrode unit 15 through the hole 18a of the insulating layer 18.
The method for patterning the conductive material 22 is not particularly limited, and various known patterning methods can be used. For example, the photolithography method can be used similarly to the case where the transparent electrode units 13 and 15 and the x-direction connection portion 14 are formed. In this case, as the etching solution, a solution that can dissolve the conductive material 22 made of a metal material is used. For example, when the conductive material 22 is made of aluminum or molybdenum, phosphoric acid acetic acid (water) obtained by blending phosphoric acid, nitric acid, acetic acid, and water in a ratio of 5: 5: 5: 1 can be used as an etching solution. When the conductive material 22 is made of silver or a silver alloy, phosphoric acid acetic acid (water) in which phosphoric acid, nitric acid, acetic acid, and water are mixed at a ratio of 4: 1: 4: 4 is used as an etching solution. it can. Further, when the conductive material 22 is made of chromium, an etching solution in which cerium ammonium nitrate, perchloric acid, and water are blended at a ratio of 17: 4: 70 can be used.
The touch panel sensor 10 according to the present embodiment is manufactured through the steps described above with reference to FIGS. 3A (a) (b) (c) to 3E (a) (b) (c).
Method for producing a color filter Then, as shown in FIG. 1 (b) (c), on the lower surface 11b of the transparent substrate 11 of the touch panel sensor 10 obtained in the above steps, the black matrix layer 31 After that, a plurality of colored layers 32 are formed between the black matrix layers 31. Thereby, the color filter 30 with a touch panel function in the present embodiment is obtained.
At this time, the black matrix layer 31 is formed so that the y-direction connecting portion 16 of the touch panel sensor 10 overlaps the black matrix layer 31 when viewed from the normal direction of the color filter 30. Thereby, as described above, it is possible to prevent the display of the liquid crystal display device 60 from being obstructed by the y-direction connecting portion 16.
The method for forming the black matrix layer 31 and the colored layer 32 is not particularly limited. For example, the black matrix layer 31 and the colored layer 32 can be formed by a photolithography method.
Further, the above-described TFT substrate 50 is provided so as to face the color filter 30 with a touch panel function obtained in this way, and then the liquid crystal 40 is filled between the color filter 30 and the TFT substrate 50 to thereby obtain a touch panel. A liquid crystal display device 60 with a function can be manufactured.
Hereinafter, effects of the touch panel sensor 10, the color filter 30, and the liquid crystal display device 60 in the present embodiment will be summarized.
According to the present embodiment, in the touch panel sensor 10, the adjacent y-direction transparent electrode units 15 are arranged in the y-direction by the y-direction connection portion 16 disposed above the x-direction connection portion 14 via the insulating layer 18. The y-direction connection portion 16 is formed together with the outer peripheral wiring 17 using the same material as that of the outer peripheral wiring 17. In this way, by forming the y-direction connection portion 16 together with the outer peripheral wiring 17, the touch panel sensor 10 having a simpler configuration can be provided.
Moreover, according to this Embodiment, the manufacturing method of the touch panel sensor 10 was provided with the process of preparing the transparent base material 11, the process of providing the transparent electrode material 21 on the upper surface 11a of the transparent base material 11, and Patterning the transparent electrode material 21 to form a large number of transparent electrode units 13 and 15 and the x-direction connection portion 14, forming the insulating layer 18 on the x-direction connection portion 14, and the transparent substrate 11 A step of providing the conductive material 22 on the transparent substrate 11 from above and a step of patterning the provided conductive material 22 to form both the outer peripheral wiring 17 and the y-direction connection portion 16. Thus, by forming the y-direction connection portion 16 together with the outer peripheral wiring 17, the touch panel sensor 10 can be manufactured by a simpler process.
Furthermore, according to the present embodiment, the outer peripheral wiring 17 and the y-direction connecting portion 16 are made of the same metal material. For this reason, compared with the case where the y direction connection part 16 consists of transparent electrode materials, the electrical conductivity of the y direction connection part 16 can be made high, and, thereby, the y direction connection part 16 consists of transparent electrode materials. As compared with the above, the width of the y-direction connecting portion 16 can be reduced. Accordingly, it is possible to prevent the display of the liquid crystal display device 60 from being hindered by the y-direction connecting portion 16.
Further, according to the present embodiment, in the color filter 30 with the touch panel function, the y-direction connecting portion 16 of the touch panel sensor 10 overlaps the black matrix layer 31 when viewed from the normal direction of the color filter 30. This can further prevent the display of the liquid crystal display device 60 from being hindered by the y-direction connecting portion 16.
Next, with reference to FIGS. 4 to 5F, the effect of the present invention will be described in comparison with a comparative example. 4A, 4B, and 4C are diagrams showing the touch panel sensor 70 in the comparative example. The touch panel sensor 70 shown in FIGS. 4 (a), 4 (b), and 4 (c) is different only in that the y-direction connecting portion 71 is made of a transparent electrode material, and other configurations are the same as those of the embodiment shown in FIGS. It is substantially the same as the touch panel sensor 10 in the form.
With reference to FIG. 5A-FIG. 5F, the manufacturing method of the touch-panel sensor 70 in a comparative example is demonstrated.
First, the transparent substrate 11 is prepared, and then the transparent electrode material 21 is provided on the upper surface 11 a of the transparent substrate 11. Thereafter, the transparent electrode material 21 provided on the upper surface 11a of the transparent base material 11 is patterned, and on the upper surface 11a of the transparent base material 11, a large number of transparent electrode units 13, 15 and an x-direction connection are formed. Part 14 is formed. Next, the insulating layer 18 is formed on the transparent electrode units 13 and 15 and the x-direction connection portion 14. The steps so far are substantially the same as the manufacturing method of the touch panel sensor 10 in the present embodiment shown in FIGS. 3A to 3C, and thus detailed description thereof is omitted.
Next, as shown in FIGS. 5A (a), (b), and (c), a transparent electrode material 72 is provided on the insulating layer 18. Thereafter, by patterning the provided transparent electrode material 72, as shown in FIGS. 5B (a), (b), and (c), the y-direction connection portion 71 that connects the adjacent y-direction transparent electrode units 15 to each other is formed. Form.
Next, as shown in FIGS. 5C (a), (b), and (c), a conductive material 22 made of a metal material is provided on the transparent base material 11 from above the transparent base material 11. Thereafter, by patterning the provided conductive material 22, the outer peripheral wiring 17 is formed as shown in FIGS. 5D (a), (b), and (c).
Thus, according to the comparative example, in the manufacturing process of the touch panel sensor 70, the transparent electrode material 21 is first formed and patterned, and then the insulating layer 18 is formed and patterned, and then the transparent electrode material is formed. 72 is formed and patterned, and then conductive material 22 is formed and patterned. As described above, according to the comparative example, formation and patterning of four layers are performed in the manufacturing process of the touch panel sensor 70.
On the other hand, according to the present embodiment, the transparent electrode material 21 is first formed and patterned, then the insulating layer 18 is formed and patterned, and then the conductive material 22 is formed and patterned. By performing this, the touch panel sensor 10 can be manufactured. That is, according to the present embodiment, the touch panel sensor 10 can be manufactured by forming and patterning three layers. Thus, according to the present embodiment, the touch panel sensor 10 is manufactured by a simpler process by forming the y-direction connecting portion 16 together with the outer peripheral wiring 17 using the same material as that of the outer peripheral wiring 17. It is possible.
Further, according to the comparative example, when an etching solution is used in patterning the transparent electrode material 72, the transparent electrode units 13 and 15 and the x-direction connecting portion 14 made of the transparent electrode material 21 may be dissolved by the etching solution. is there. Therefore, according to the comparative example, when the transparent electrode material 72 is patterned by etching, the transparent electrode units 13 and 15 and the x-direction connecting portion 14 need to be masked. For example, when the transparent electrode material 72 is patterned by etching, the transparent electrode units 13 and 15 and the x-direction connection portion 14 need to be completely covered with the insulating layer 18.
On the other hand, according to the present embodiment, the transparent electrode material is formed and patterned by forming the transparent electrode units 13 and 15 and the x-direction connecting portion 14 from the transparent electrode material 21 as described above. It is only when you do. Therefore, when an etchant that does not attack the transparent electrode material is selected as the etchant for the conductive material 22, the patterning of the conductive material 22 is performed without masking the transparent electrode units 13 and 15 and the x-direction connection portion 14. It can be carried out. For this reason, for example, as shown in FIG. 6, the insulating layer 18 may be provided only in the vicinity of the x-direction connecting portion 14. That is, it is only necessary to provide the minimum insulating layer 18 that can prevent the x-direction connection portion 14 and the y-direction connection portion 16 from being short-circuited.
Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. 7 to 8E. 7A is a plan view showing the touch panel sensor according to the second embodiment, and FIG. 7B is a plan view of the touch panel sensor of FIG. 7A viewed from the VIIb-VIIb direction. FIG. 7C is a longitudinal sectional view of the touch panel sensor of FIG. 7A viewed from the VIIc-VIIc direction. 8A to 8E are diagrams for explaining a method of manufacturing the touch panel sensor according to the second embodiment.
The second embodiment shown in FIGS. 7 to 8E differs from the second embodiment only in that the y-direction connection portion is disposed below the x-direction connection portion with an insulating film interposed therebetween. This is substantially the same as the first embodiment shown in FIGS. In the second embodiment shown in FIG. 7 to FIG. 8E, the same parts as those in the first embodiment shown in FIG. 1 to FIG.
Color Filter First, the color filter 30A with a touch panel function in the present embodiment will be described. As shown in FIG. 7B, the color filter 30A is provided between the transparent matrix 11, the black matrix layer 31 provided on the lower side (display substrate side) of the transparent matrix 11, and the black matrix layer 31. And the touch panel sensor layer 12 </ b> A provided on the upper side (observation side) of the transparent substrate 11. As will be described later, the touch panel sensor 10A is configured by the transparent substrate 11 and the touch panel sensor layer 12A.
When a liquid crystal display device (not shown) is formed by the color filter 30A and the TFT substrate (not shown), a black matrix is formed as in the case of the first embodiment shown in FIGS. A protective film (not shown) may be provided between the layer 31 and the colored layer 32 and the liquid crystal. Examples of the material for the protective film include a transparent material made of an oxide or oxynitride of silicon, aluminum, zinc or tin, or an organic insulating film such as an acrylic resin. Further, a common transparent electrode (not shown) for pixel display may be provided on the surfaces of the black matrix layer 31 and the colored layer 32. Furthermore, a spacer (not shown) may be provided on the black matrix layer 31 to hold a gap between the color filter 30A and the TFT substrate.
Touch Panel Sensor Next, with reference to FIGS. 7A, 7B, and 7C, the touch panel sensor 10A in the present embodiment will be described. As shown in FIGS. 7A, 7B, and 7C, the touch panel sensor 10A is arranged so as to be aligned in the x direction and the y direction on the upper side of the transparent base material 11 and the transparent base material 11 that extends in a plane. A number of transparent electrode units 13 and 15 comprising an x-direction transparent electrode unit 13 connected in the direction via an x-direction connecting portion 14 and a y-direction transparent electrode unit 15 positioned between the x-direction transparent electrode units 13; An x-direction transparent electrode unit 13 and an outer peripheral wiring 17 connected to the y-direction transparent electrode unit 15 are provided at the periphery of the large number of transparent electrode units 13 and 15.
Here, as shown in FIGS. 7B and 7C, the x-direction connecting portion 14 is formed using a transparent electrode material that is the same material as the material of the transparent electrode units 13 and 15. Further, as shown in FIGS. 7B and 7C, the x-direction connecting portion 14 is formed on the same plane as the transparent electrode units 13 and 15 except for a part of the transparent electrode units 13 and 15 located at the periphery. Has been. On the other hand, adjacent y-direction electrode units 15 are connected in the y-direction by a y-direction connecting portion 16 disposed on the upper surface 11a of the transparent substrate 11, as shown in FIG. 7C. In this case, as shown in FIG. 7B, an insulating layer 18 is interposed between the y-direction connection portion 16 and the x-direction connection portion 14, thereby the y-direction connection portion 16 and the x-direction connection portion. 14 is prevented from being electrically short-circuited.
As in the case of the first embodiment shown in FIGS. 1 to 6, the y-direction connecting portion 16 is formed together with the peripheral wiring 17 using the same material as that of the peripheral wiring 17. For this reason, compared with the case where the y direction connection part 16 and the outer periphery wiring 17 are formed in a separate process, the y direction connection part 16 and the outer periphery wiring 17 can be formed more easily. The transparent electrode units 13 and 15, the x-direction connection portion 14, the y-direction connection portion 16, the outer peripheral wiring 17, and the insulating layer 18 constitute a touch panel sensor layer 12A of the touch panel sensor 10A.
y-direction connection portion Next, the y-direction connection portion 16 will be described in detail. As in the case of the first embodiment shown in FIGS. 1 to 6, the y-direction connection portion 16 is formed of the same material as the material of the outer peripheral wiring 17, that is, a metal material. Even when the dimension (width) in the x direction of the connecting portion 16 is small, the adjacent y-direction transparent electrode units 15 can be connected with low resistance. Here, the dimension (width) in the x direction of the y-direction connecting portion 16 is in the range of 5 to 20 μm, for example, and the dimension (length) in the y direction is in the range of 20 to 500 μm, for example.
Thus, by forming the y-direction connection portion 16 from the same metal material as that of the outer peripheral wiring 17, the y-direction connection portion 16 is formed compared to the case of forming the y-direction connection portion 16 from a transparent electrode material such as ITO. The width of 16 can be reduced. For this reason, in the liquid crystal display device (not shown) provided with the touch panel sensor 10 </ b> A in the present embodiment, the display of the liquid crystal display device is hardly hindered by the y-direction connecting portion 16.
Preferably, as shown in FIGS. 7B and 7C, the y-direction connecting portion 16 is provided so as to overlap the black matrix layer 31 of the color filter 30A when viewed from the normal direction of the color filter 30A. This can further prevent the display of the liquid crystal display device from being hindered by the y-direction connecting portion 16. In this case, the width of the black matrix layer 31 in the x direction is appropriately set according to the thickness of the transparent substrate 11, the width of the y direction connection portion 16 in the x direction, the viewing angle of the liquid crystal display device, etc. It is within the range of 5~100μ m.
Insulating Layer Next, the insulating layer 18 will be described in detail. As shown in FIG. 7C, a hole 18a penetrating in the vertical direction is formed in a portion of the insulating layer 18 corresponding to the end portion 16a in the y direction of the y direction connecting portion 16. The hole 18a is filled with a transparent electrode material constituting the y-direction transparent electrode unit 15 as shown in FIG. 7C. Thus, the y-direction connection is made through the hole 18a of the insulating layer 18. The part 16 and the y-direction transparent electrode unit 15 are connected.
Next, the operation of the present embodiment having such a configuration will be described. Here, the manufacturing method of the touch panel sensor 10A and the color filter 30A will be described.
The manufacturing method Introduction of a touch panel sensor, with reference to FIG. 8A (a) (b) ( c) ~ Figure 8E (a) (b) ( c), a method for manufacturing a touch panel sensor 10A. 8A (a) (b) (c) to FIG. 8E (a) (b) (c), the figure shown in (a) is a plan view showing a touch panel sensor during manufacture. The figure shown in (b) is a longitudinal sectional view of the touch panel sensor during manufacture of (a) as seen from the directions VIIIAb-VIIIAb to VIIIEb-VIIIEb, respectively, and the figure shown in (c) It is the longitudinal cross-sectional view which looked at the touch panel sensor under manufacture of (a) from the VIIIAc-VIIIAc-VIIIEc-VIIIEc direction, respectively.
First, a transparent base material 11 is prepared, and then a conductive material 22 made of a metal material is provided on the upper surface 11a of the transparent base material 11, as shown in FIGS. . The method for providing the conductive material 22 is not particularly limited. For example, the conductive material 22 is provided on the upper surface 11a of the transparent substrate 11 by sputtering.
Next, the conductive material 22 provided on the upper surface 11a of the transparent base material 11 is patterned, and as shown in FIG. 8B (a), the outer periphery is formed on the upper surface 11a of the transparent base material 11. The wiring 17 and the y-direction connection portion 16 are formed together. The outer periphery wiring 17 is arrange | positioned in the area | region corresponding to the outer periphery non-display area | region 20B among the upper surfaces 11a of the transparent base material 11 similarly to the case of 1st Embodiment shown in FIG.
The method for patterning the conductive material 22 is not particularly limited, and various known patterning methods can be used. For example, a photolithography method can be used as in the case of the first embodiment shown in FIGS.
Next, as shown in FIGS. 8C (a), (b), and (c), an insulating layer 18 is formed on the y-direction connecting portion 16. Here, as shown in FIGS. 8C (a) and 8 (c), in the insulating layer 18, a hole 18a penetrating in the vertical direction is formed at a position corresponding to the end portion 16a in the y direction of the y direction connecting portion 16. Yes.
Next, as shown in FIGS. 8D (a), (b), and (c), a transparent electrode material 21 is provided on the transparent substrate 11 from above the transparent substrate 11. The method for providing the transparent electrode material 21 is not particularly limited. For example, the transparent electrode material 21 is provided on the upper surface 11a of the transparent substrate 11 by sputtering.
Next, the transparent electrode material 21 provided on the transparent base material 11 is patterned, and as shown in FIG. 8E (a), the x-direction transparent electrode unit 13, the x-direction connecting portion 14, and the y-direction transparent electrode unit. 15 is formed. Here, as shown in FIGS. 8E (a) and 8 (b), the x-direction transparent electrode units 13 are arranged in the x-direction, and the adjacent x-direction transparent electrode units 13 are connected to each other in the x-direction connection portion 14. Connected by. Further, as shown in FIGS. 8E (a) and 8 (c), the y-direction transparent electrode units 15 are arranged in the y-direction and are positioned between the x-direction transparent electrode units 13 and between the x-direction connecting portions 14. . Further, as shown in FIG. 8E (c), adjacent y-direction transparent electrode units 15 are connected to each other by the y-direction connecting portion 16 formed in advance.
The touch panel sensor 10A according to the present embodiment is manufactured through the steps described above with reference to FIGS. 8A (a) (b) (c) to 8E (a) (b) (c).
Method for producing a color filter Then, as shown in FIG. 7 (b) (c), on the lower surface 11b of the transparent substrate 11 of the touch panel sensor 10A obtained by the above process, the black matrix layer 31 After that, a plurality of colored layers 32 are formed between the black matrix layers 31. Thus, the color filter 30A with a touch panel function in the present embodiment is obtained.
At this time, the black matrix layer 31 is formed so that the y-direction connecting portion 16 of the touch panel sensor 10A overlaps the black matrix layer 31 when viewed from the normal direction of the color filter 30A. Thereby, as described above, it is possible to prevent the display of the liquid crystal display device from being obstructed by the y-direction connecting portion 16.
Further, a display substrate (for example, a TFT substrate, not shown) is provided so as to face the color filter 30A with a touch panel function obtained in this way, and then a liquid crystal (not shown) is provided between the color filter 30A and the TFT substrate. A liquid crystal display device with a touch panel function (not shown) can be manufactured.
Hereinafter, effects of the touch panel sensor 10A and the color filter 30A in the present embodiment will be summarized.
According to the present embodiment, in the touch panel sensor 10 </ b> A, adjacent y-direction transparent electrode units 15 are arranged in the y-direction by the y-direction connection portion 16 disposed via the insulating layer 18 below the x-direction connection portion 14. The y-direction connection portion 16 is formed together with the outer peripheral wiring 17 using the same material as that of the outer peripheral wiring 17. In this way, by forming the y-direction connection portion 16 together with the outer peripheral wiring 17, the touch panel sensor 10A having a simpler configuration can be provided.
Moreover, according to this Embodiment, the manufacturing method of 10 A of touchscreen sensors was provided with the process of preparing the transparent base material 11, and the process of providing the electroconductive material 22 on the upper surface 11a of the transparent base material 11. Patterning the conductive material 22 to form both the peripheral wiring 17 and the y-direction connecting portion 16, forming the insulating layer 18 on the y-direction connecting portion 16, and transparent from above the transparent substrate 11 A step of providing the transparent electrode material 21 on the substrate 11, a step of patterning the provided transparent electrode material 21 to form the x-direction transparent electrode unit 13, the y-direction transparent electrode unit 15, and the x-direction connection portion 14; It has. By forming the y-direction connection portion 16 together with the outer peripheral wiring 17 in this manner, the touch panel sensor 10A can be manufactured by a simpler process.
Furthermore, according to the present embodiment, the outer peripheral wiring 17 and the y-direction connecting portion 16 are made of the same metal material. For this reason, compared with the case where the y direction connection part 16 consists of transparent electrode materials, the electrical conductivity of the y direction connection part 16 can be made high, and, thereby, the y direction connection part 16 consists of transparent electrode materials. As compared with the above, the width of the y-direction connecting portion 16 can be reduced. Thereby, it is possible to prevent the display of the liquid crystal display device from being hindered by the y-direction connecting portion 16.
Further, according to the present embodiment, in the color filter 30A with a touch panel function, the y-direction connection portion 16 of the touch panel sensor 10A overlaps the black matrix layer 31 when viewed from the normal direction of the color filter 30A. This can further prevent the display of the liquid crystal display device from being hindered by the y-direction connecting portion 16.
Third Embodiment Next, with reference to FIGS. 9 and 10, a third embodiment of the present invention will be described. FIG. 9A is a plan view showing the touch panel sensor according to the third embodiment, and FIG. 9B is a longitudinal section of the touch panel sensor of FIG. 9A viewed from the IXb-IXb direction. FIG. 9C is a longitudinal sectional view of the touch panel sensor of FIG. 9A viewed from the IXc-IXc direction. FIG. 10A is a longitudinal sectional view showing a liquid crystal display device according to the third embodiment of the present invention. FIG. 10B shows a color filter of the liquid crystal display device shown in FIG. FIG. 10C is a view of the display substrate of the liquid crystal display device of FIG. 10A viewed from the arrow Xc-Xc.
The third embodiment shown in FIG. 9 and FIG. 10 differs only in that the black matrix layer of the color filter and the colored layers of a plurality of colors are provided on the touch panel sensor layer. This is substantially the same as the first embodiment shown in FIGS. In the second embodiment shown in FIG. 9 and FIG. 10, the same parts as those in the first embodiment shown in FIG. 1 to FIG.
Liquid Crystal Display Device As shown in FIGS. 10A, 10B, and 10C, a liquid crystal display device 60B with a touch panel function includes a color filter 30B with a touch panel function and a TFT substrate provided to face the color filter 30B. (Display substrate) 50. A light source (not shown) that emits light toward the TFT substrate 50 is provided below the TFT substrate 50. Further, as shown in FIG. 10A, a liquid crystal 40 is filled between the color filter 30 </ b> B and the TFT substrate 50, and the liquid crystal 40 is sealed with a sealing material 41.
Color Filter Next, the color filter 30B in the present embodiment will be described with reference to FIGS. 9 (a), 9 (b), 9 (c) and FIG. 10 (a). As shown in FIGS. 9A, 9 </ b> B, and 9 </ b> C, the color filter 30 </ b> B includes a transparent substrate 11 and a touch panel sensor layer 12 provided on the surface 11 a of the transparent substrate 11. A black matrix layer 31 provided on the touch panel sensor layer 12 and a plurality of colored layers 32 provided between the black matrix layers 31 are provided. As in the case of the first embodiment shown in FIGS. 1 to 6, the touch panel sensor 10 is composed of the transparent substrate 11 and the touch panel sensor layer 12. Since the touch panel sensor layer 12 and the touch panel sensor 10 are substantially the same as the touch panel sensor layer 12 and the touch panel sensor 10 in the first embodiment shown in FIG. 1 to FIG.
As described above, in the color filter 30 </ b> B, the black matrix layer 31 and the colored layers 32 of a plurality of colors are formed on the touch panel sensor layer 12. In this case, as shown to Fig.10 (a), the surface 11a in which the touchscreen sensor layer 12 is formed among the surfaces of the transparent base material 11 is the TFT substrate 50 side, and the surface 11b on the opposite side is the surface 11b. It is the observation side.
In the touch panel sensor 10 according to the present embodiment, as shown in FIG. 9C, the adjacent y-direction transparent electrode units 15 are arranged in the y-direction above the x-direction connecting portion 14 via the insulating layer 18. The y-direction connection portion 16 is formed together with the outer peripheral wiring 17 by using the same material as that of the outer peripheral wiring 17. In this way, by forming the y-direction connection portion 16 together with the outer peripheral wiring 17, the touch panel sensor 10 having a simpler configuration can be provided.
In the present embodiment, the outer peripheral wiring 17 and the y-direction connecting portion 16 are made of the same metal material. For this reason, compared with the case where the y direction connection part 16 consists of transparent electrode materials, the electrical conductivity of the y direction connection part 16 can be made high, and, thereby, the y direction connection part 16 consists of transparent electrode materials. As compared with the above, the width of the y-direction connecting portion 16 can be reduced. Accordingly, it is possible to prevent the display of the liquid crystal display device 60B from being hindered by the y-direction connecting portion 16.
In the color filter 30B according to the present embodiment, as shown in FIG. 9B, the y-direction connecting portion 16 of the touch panel sensor 10 overlaps the black matrix layer 31 when viewed from the normal direction of the color filter 30B. . Thus, it is possible to further prevent the display of the liquid crystal display device 60B from being hindered by the y-direction connecting portion 16.
In the present embodiment, the color filter 30B includes the transparent base material 11, the touch panel sensor layer 12 provided on the surface 11a of the transparent base material 11, and the black matrix layer 31 provided on the touch panel sensor layer 12. An example is shown in which a plurality of colored layers 32 provided between the black matrix layers 31 are formed. However, the color filter 30B is not limited to this, and the color filter 30B includes the transparent base material 11 and the touch panel sensor layer 12A provided on the surface 11a of the transparent base material 11 (second embodiment shown in FIGS. 7 and 8). A configuration), a black matrix layer 31 provided on the touch panel sensor layer 12 </ b> A, and a plurality of colored layers 32 provided between the black matrix layers 31.
In each of the above-described embodiments, an example in which the display device with a touch panel function includes a liquid crystal display device including a color filter and a TFT substrate provided so as to face the color filter is shown. However, the present invention is not limited to this, and the display device may be another display device such as an organic EL display or a plasma display.
DESCRIPTION OF SYMBOLS 10 Touchscreen sensor 10A Touchscreen sensor 11 Transparent base material 11a Upper surface 11b of a transparent base material Lower surface 12 of a transparent base material Touch panel sensor layer 12A Touch panel sensor layer 13 X direction transparent electrode unit 13a X direction terminal part 14 X direction connection Portion 15 Y-direction transparent electrode unit 15a Y-direction terminal portion 15b End portion 16 in y-direction Y-direction connection portion 16a End portion 17 in y-direction Peripheral wiring 18 Insulating layer 21 Transparent electrode material 22 Conductive material 30 Color filter 30A Color filter 30B Color filter 31 Black matrix layer 32 Colored layer 40 Liquid crystal 41 Sealing material 50 TFT substrate 52 Transparent electrode portion 53 Wiring portion 60 Liquid crystal display device 60B Liquid crystal display device 70 Touch panel sensor 71 Y-direction connection portion 72 Transparent electrode material
In color filter with touch panel function,
A capacitive touch panel sensor comprising a transparent substrate extending in a planar shape;
A black matrix layer provided on the upper or lower side of the transparent substrate of the touch panel sensor;
A plurality of colored layers provided between the black matrix layers,
The touch panel sensor
An x-direction transparent electrode unit arranged so as to be aligned in the x-direction and the y-direction on the upper side of the transparent base material and connected in the x-direction via an x-direction connecting portion, and a y-direction transparent electrode positioned between the x-direction transparent electrode units A large number of transparent electrode units,
An outer peripheral wiring connected to the x-direction transparent electrode unit and the y-direction transparent electrode unit located at the periphery of the large number of transparent electrode units,
The x-direction connecting portion is formed using the same material as that of the transparent electrode unit,
Adjacent y-direction transparent electrode units are connected in the y-direction by a y-direction connection portion disposed via an insulating layer below the x-direction connection portion,
The y-direction connecting portion is formed together with the peripheral wiring using the same material as that of the peripheral wiring,
A color filter, wherein the y-direction connecting portion overlaps the black matrix layer as viewed from the normal direction of the color filter.
In the manufacturing method of the color filter with a touch-panel function of Claim 1,
Forming a capacitive touch panel sensor including a transparent substrate extending in a planar shape;
Forming a black matrix layer on the upper or lower side of the transparent substrate of the touch panel sensor;
Forming a colored layer of a plurality of colors between black matrix layers,
The step of forming the touch panel sensor includes:
Providing a conductive material on the upper surface of the transparent substrate;
Patterning the provided conductive material to form the peripheral wiring and the y-direction connecting portion;
forming the insulating layer on the y-direction connecting portion;
Providing a transparent electrode material on the transparent substrate from above the transparent substrate;
Patterning the provided transparent electrode material to form the x-direction transparent electrode unit, the y-direction transparent electrode unit, and the x-direction connection portion, and
In the black matrix layer forming step, the black matrix layer is formed so that the y-direction connection portion of the touch panel sensor overlaps the black matrix layer when viewed from the normal direction of the color filter. Manufacturing method.
The method for manufacturing a color filter according to claim 2 , wherein the conductive material is made of a metal material.
In a display device with a touch panel function,
A color filter according to claim 1 ;
A display substrate provided to face the color filter,
A display device, wherein a y-direction connection portion of a touch panel sensor of a color filter overlaps with a black matrix layer of the color filter when viewed from a normal direction of the color filter.
In capacitive touch panel sensors,
A transparent substrate extending in a planar shape;
The x-direction connecting portion is formed on the same plane as the transparent electrode unit using the same material as the transparent electrode unit,
Adjacent y-direction transparent electrode units are connected in the y-direction by a y-direction connection portion disposed via an insulating layer above the x-direction connection portion,
The y-direction connecting portion is formed together with the outer peripheral wiring by patterning the same material as that of the outer peripheral wiring using an etching solution.
The capacitive touch panel sensor, wherein an etchant that does not attack the material of the transparent electrode unit and the x-direction connecting portion is used as the etchant.
In the manufacturing method of the touch panel sensor according to claim 5 ,
Preparing the transparent substrate;
Providing a transparent electrode material on the upper surface of the transparent substrate;
Patterning the provided transparent electrode material to form the x-direction transparent electrode unit, the y-direction transparent electrode unit, and the x-direction connection portion;
forming the insulating layer on the x-direction connecting portion;
Providing a conductive material on the transparent substrate from above the transparent substrate;
Patterning the provided conductive material using an etching solution to form the outer peripheral wiring and the y-direction connection portion, and
A method for manufacturing a touch panel sensor, wherein an etchant that does not attack a transparent electrode material is used as the etchant.
JP2009238575A 2009-10-15 2009-10-15 Capacitive touch panel sensor and method for manufacturing the touch panel sensor Active JP5418130B2 (en)
JP2009238575A JP5418130B2 (en) 2009-10-15 2009-10-15 Capacitive touch panel sensor and method for manufacturing the touch panel sensor
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JP2009238575A Active JP5418130B2 (en) 2009-10-15 2009-10-15 Capacitive touch panel sensor and method for manufacturing the touch panel sensor
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