TWI559199B - Electrostatic capacitive touch panel substrate and display device - Google Patents

Description

Electrostatic capacitive touch panel substrate and display device

The present invention relates to a capacitive touch panel substrate and a display device. In particular, a capacitive touch panel substrate in which a connection portion between transparent electrode units arranged in two directions is difficult to be noticed, and a display device including the substrate.

In recent years, various display devices such as smart phones and tablet computers (personal computers) have been rapidly popularized as position input devices used in combination with display panels. The touch panel has been known for various types such as electromagnetic induction type and resistive film type, and has been used in various applications. However, recently, it has been particularly noticeable that it is possible to simultaneously input multi-touch static electricity. Capacitive touch panel.

FIG. 11( a ) shows a display panel having a touch panel 30 including the former capacitive touch panel substrate 20 and displayed on a display image such as a liquid crystal display panel or an electroluminescence (EL) panel (electroluminescence panel). An exploded plan view of an example of the front display device 200 of the panel 40 and the front protective plate 50 for a display device made of a cover glass or the like.

Fig. 11 (b) is a partially enlarged plan view showing the transparent electrode unit of the prior capacitive touch panel substrate 20 in Fig. 11 (a), and Fig. 11 (c) is focused on the transparent in Fig. 11 (b) A partially enlarged cross-sectional view of the joint between the electrode units. Fig. 12 is a partially enlarged cross-sectional view showing the joint portion of the line C-C in Fig. 11(c).

As shown in FIGS. 11(b) and 11(c), the capacitive touch panel substrate 20 has a first direction transparent electrode unit 2a arranged in the Y direction in the vertical direction of the drawing, and is The second direction transparent electrode unit 2b is arranged in the X direction in the left-right direction on the drawing surface. Here, the Y direction is also referred to as a first direction, and the X direction is referred to as a second direction.

In the above-described electrostatic capacitive touch panel substrate 20, an example in which the first direction transparent electrode unit 2a and the second direction transparent electrode unit 2b are formed on the same surface side of the light-transmitting substrate 1 is shown (see Patent Document 1). . This aspect has an advantage that the relative positional accuracy of the first direction transparent electrode unit 2a and the second direction transparent electrode unit 2b can be improved.

In other words, the capacitive touch panel substrate 20 of the prior art shown in the drawing has the first direction S1 (the Y direction in the drawing) on the first surface S1 of the light-transmitting substrate 1 The first direction transparent electrode unit 2a is formed on the same surface as the material of the first direction transparent electrode unit 2a, and connects the first direction connection portion 3a of the first direction transparent electrode unit 2a and the first direction transparent electrode unit. 2a the same material is formed on the same side, located in the first direction transparent electrode unit 2a Simultaneously located between the first direction connecting portions 3a, the second direction transparent electrode unit 2b is arranged in the second direction (the X direction in the drawing direction) intersecting with the first direction (Y direction), and the second direction is transparent. The electrode unit 2b is connected to the first direction connecting portion 3a via the insulating layer 4 and insulated from the first direction connecting portion 3a.

In this case, the second direction connecting portion 3b may be formed of the same material as the second direction transparent electrode unit 2b, similarly to the first direction connecting portion 3a, in order to obtain transparency, but each transparent electrode is formed. In the form of a small amount of the unit, the metal material of the outer peripheral portion of the position detecting region in which the first direction transparent electrode unit 2a and the second direction transparent electrode unit 2b are arranged is known. The wiring 7 is formed in the same material at the same time (see Patent Document 1).

That is, as shown in the cross-sectional view of Fig. 12, the second direction connecting portion 3b is composed of a reflective conductive layer 5 made of a metal material, and the reflective conductive layer 5 is made of a metal layer such as a silver alloy. Silver metallic reflective.

The second direction connecting portion 3b is formed of the same material as the second direction transparent electrode unit 2b, and the first direction transparent electrode unit 2b and the second direction transparent electrode unit 2b cannot be simultaneously provided in the relationship of providing the insulating layer 4. To form, you must add one more step. However, when the second direction connecting portion 3b is formed at the same time as the material of the wiring 7 on the outer peripheral portion of the position detecting portion, the number of steps can be reduced.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2011-86122

However, as shown in the cross-sectional view of Fig. 12, the second direction connecting portion 3b is formed of the reflective conductive layer 5, and unlike the transparent electrode, the light L is reflected when it is irradiated, so that it is conspicuous. The phenomenon that the reflective conductive layer 5 is conspicuous becomes smaller as the size of the touch panel becomes smaller, and the viewer who views the display panel passes through so that the distance from the operator's eyes of the touch panel becomes very close. Therefore, there is a tendency to become significant.

An object of the present invention is to provide a capacitive touch panel substrate in which a connecting portion between two transparent electrode units arranged in two directions is prevented from becoming conspicuous. Further, in order to provide a display device having the same.

The capacitive touch panel substrate according to the present invention includes: a translucent substrate having a first surface and a second surface opposite to the first surface; and the first surface and the first surface of the translucent substrate One of the two faces is arranged in a plurality of first direction transparent electrode units in the first direction; the same material as the first direction transparent electrode unit is formed on the same surface, and the first direction transparent electrode unit is connected a first direction connecting portion of each other; shaped by the same material as the first direction transparent electrode unit a plurality of second-direction transparent electrode units arranged in the second direction intersecting with the first direction and located between the first-direction transparent electrode units and between the first-direction transparent electrode units; The second direction transparent electrode unit is insulated from the first direction connecting portion by an insulating layer, and includes a second direction connecting portion of the reflective conductive layer; and Yxy using a standard light source C according to the International Commission on Illumination CIE The Y value of the color system exhibits a low reflectance of 10% or less, and a low reflection layer overlapping at least a part of the reflective conductive layer when viewed in a direction perpendicular to the surface of the light-transmitting substrate.

In the capacitive touch panel substrate of the present invention, the area of the overlapping portion between the low reflection layer and the reflective conductive layer may be 30% or more of the area of the reflective conductive layer.

In the capacitive touch panel substrate according to the present invention, the reflective conductive layer may be formed by the outer contour shape of the low reflection layer when viewed from a direction perpendicular to the surface of the light transmissive substrate. The outer contour shape is included on the inner side.

In the capacitive touch panel substrate of the present invention, the outer peripheral portion of the position detecting region in which the first direction transparent electrode unit and the second direction transparent electrode unit are arranged may be the one surface of the light transmissive substrate. And having a decorative portion, the low-reflection layer and the decorative portion being formed of the same material.

In the capacitive touch panel substrate according to the present invention, the outer peripheral portion of the position detecting region in which the first direction transparent electrode unit and the second direction transparent electrode unit are arranged may be the light transmissive substrate. The one surface has wiring, and the reflective conductive layer and the wiring are formed of the same material.

In the capacitive touch panel substrate according to the present invention, the low reflection layer may be formed on the light transmissive substrate side in the thickness direction with respect to the reflective conductive layer.

In the capacitive touch panel substrate of the present invention, the low reflection layer may be formed between the reflective conductive layer and the light transmissive substrate.

In the capacitive touch panel substrate according to the present invention, the surface of the light-transmitting substrate opposite to the one surface may function as an input surface of the touch panel.

In the capacitive touch panel substrate according to the present invention, the low reflection layer may be formed on the side farther from the light-transmitting substrate than the reflective conductive layer in the thickness direction.

Further, a display device according to the present invention includes a display panel and the capacitive touch panel substrate disposed on an observer side of the display panel.

According to the capacitive touch panel substrate of the present invention, the joint portion between the transparent electrode units arranged in two directions that intersect each other can be made less conspicuous.

According to the display device of the present invention, the capacitive touch panel substrate provided with the same has the aforementioned effects.

1‧‧‧Transmissive substrate

2a‧‧‧1st direction transparent electrode unit

2b‧‧‧2nd direction transparent electrode unit

3a‧‧‧1st direction connection

3b‧‧‧2nd direction continuation

4‧‧‧Insulation

5‧‧‧Reflective conductive layer

6‧‧‧Low reflection layer

7‧‧‧Wiring

7a‧‧‧1st direction transparent electrode expansion

10‧‧‧Electrostatic touch panel substrate

20‧‧‧Electrostatic touch panel substrate

30‧‧‧Touch panel

40‧‧‧ display panel

Ap‧‧‧Location Detection Area

C‧‧‧Standard light source

S1‧‧‧ first side

S2‧‧‧2nd

V‧‧‧ Observer

1(a) is a schematic plan view showing an embodiment (first formed connecting portion) of a capacitive touch panel substrate according to the present invention, and FIG. 1(b) is a continuation of the CC line in FIG. 1(a). Partially enlarged section of the section.

2(a) is a schematic plan view showing another embodiment of the capacitive touch panel substrate according to the present invention (a post-forming connecting portion), and FIG. 2(b) is a continuation of the CC line in FIG. 2(a). Partially enlarged section of the section.

Fig. 3 (a) is a schematic plan view showing another embodiment of the capacitive touch panel substrate according to the present invention (the first formed connecting portion, the through hole is continued), and Fig. 3 (b) is the view of Fig. 3 (a) A partially enlarged cross-sectional view of the splicing portion of the CC line.

4(a) is a schematic plan view showing another embodiment of the capacitive touch panel substrate according to the present invention (the succeeding portion formed after the through hole is connected), and FIG. 4(b) is a view in FIG. 4(a). A partially enlarged cross-sectional view of the splicing portion of the CC line.

Fig. 5 (a) is a schematic plan view showing another embodiment of the capacitive touch panel substrate according to the present invention (a portion of the reflective conductive layer is exposed by the low reflection layer), and Fig. 5 (b) is a diagram of Fig. 5 (a) A partially enlarged cross-sectional view of the splicing portion of the CC line.

6(a) and 6(b) illustrate the reflective guides in the form of Fig. 5, respectively. A plan view of an example of the exposed state of the electrical layer.

Fig. 7 (a) is a plan view showing another embodiment of the capacitive touch panel substrate according to the present invention (the same material as the low reflection layer and the decorative portion), and Fig. 7 (b) shows a portion of the infrared transmission window. Partially enlarged cross-sectional view, and Fig. 7(c) is a partially enlarged cross-sectional view corresponding to the joint of Fig. 1(b).

Fig. 8 is a partially enlarged cross-sectional view showing another embodiment (with an overcoat layer) of the capacitive touch panel substrate according to the present invention (corresponding to the configuration of Fig. 1(b)).

Figure 9 is a cross-sectional view showing an embodiment of a display device according to the present invention.

Figure 10 is a cross-sectional view showing another embodiment of a display device according to the present invention.

Fig. 11 (a) is an exploded plan view showing an example of a front display device using a touch panel, a display panel, and a front protective plate for a display device using the former capacitive touch panel substrate, Fig. 11 (b) A partially enlarged plan view showing an example of a transparent electrode unit of the capacitive touch panel substrate, and FIG. 11(c) is a partially enlarged plan view showing an example of a connection portion between the transparent electrode units.

Fig. 12 is a partially enlarged cross-sectional view showing the joint portion of the line C-C in Fig. 11(c).

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Further, the drawing is a conceptual diagram, and the scale relationship, the aspect ratio, and the like of the constituent elements are appropriately exaggerated in accordance with the convenience of the description.

[A] Definition of terms:

Hereinafter, the definitions of the main terms used in the present invention will be described first.

The "front side" is a capacitive touch panel substrate 10 or other components. When the capacitive touch panel substrate 10 is used in combination with the display panel 40, the display light is emitted from the display panel 40, meaning that the light is emitted from the display panel 40. The viewer side of the display of the display panel 40 is observed.

In addition, the "front side" means that the operator side of the touch panel 30 using the capacitive touch panel substrate 10 is operated on the capacitive touch panel substrate 10 or other components.

The term "back side" means the side opposite to the "front side", which means that the display light of the display panel 40 is incident on the side of the capacitive touch panel substrate 10 or other components.

Among the "first side" and the "second side", which is the "side of the table", and the side of the "surface side" is arbitrary.

Among the "1st side" and "2nd side", the side is "the side of one side" and the side of the "other side" is arbitrary.

However, in the present specification, a surface on which the first direction transparent electrode unit 2a and the second direction transparent electrode unit 2b are provided is referred to as "one surface". Whether the "face of one side" will become the "side of the watch" or the "back side" will depend on the capacitive touch panel substrate. The layer structure of 10 is used. The capacitive touch panel substrate 10 is used such that the low-reflection layer 6 has the reflective conductive layer 5 on the front side.

In the present specification, the form in which the "one side" is used as the "back side" is mainly described. However, the form used as the "front side" will be described.

[B] Electrostatic capacitive touch panel substrate 10:

The capacitance type touch panel substrate 10 according to the present invention will be described in each embodiment.

"First embodiment: a joint formed first"

Fig. 1(a) is a schematic plan view showing a first embodiment of a capacitive touch panel substrate 10 according to the present invention, and Fig. 1(b) is a partially enlarged cross-sectional view taken along line C-C of Fig. 1(a).

In the present embodiment, the first direction transparent electrode unit 2a and the second direction transparent electrode unit 2b are formed after the second direction connecting portion 3b is formed.

The capacitive touch panel substrate 10 of the embodiment shown in FIG. 1 is configured to include a translucent substrate 1 and a first surface of the translucent substrate 1 in a first direction. The direction transparent electrode unit 2a; the same material as the first direction transparent electrode unit 2a is formed on the same surface, and the first direction connecting portion 3a of the first direction transparent electrode unit 2a is connected; and the first direction transparent electrode unit 2a identical The material is formed on the same surface, and is located between the first-direction transparent electrode units 2a and between the first-direction connecting portions 3a, and is arranged in the second direction intersecting the first direction by the plurality of second-direction transparent electrode units 2b. The second direction transparent electrode unit 2b is connected to the first direction connecting portion 2a and insulated by the insulating layer 4, and includes the second direction connecting portion 3b of the reflective conductive layer 5; and according to the use of the International Lighting Commission CIE The Y value of the Yxy color system of the standard light source C exhibits a low reflectance of 10% or less, and is observed from the direction perpendicular to the first surface S1 of the one surface of the light-transmitting substrate 1 and the reflective conductive layer. At least some of the 5 overlap.

Further, in the present embodiment, the overlapping of the reflective conductive layer 5 and the low-reflection layer 6 is low-reflection when viewed from the direction perpendicular to the first surface S1 of the one surface of the light-transmitting substrate 1. The outer contour shape of the layer 6 is such that the outer contour shape of the reflective conductive layer 5 is included inside. This condition, in other words, is 100% of the area of the reflective conductive layer 5, and the low reflection layer 6 is superposed on the entire area.

In the present embodiment, the first surface S1 which is one surface of the light-transmitting substrate 1 is the surface above the drawing in the cross-sectional view of Fig. 1(b). In other words, the capacitive touch panel substrate 10 is assumed. In this cross-sectional view, the second surface S2 on the lower side of the drawing is used as the front side, and the operator facing the touch panel, that is, the viewer V of the display panel. .

In the figure, in the XY rectangular coordinate system, the Y direction is the first direction, and the X direction is the second direction.

Moreover, in the present invention, the first direction and the second direction intersect each other The directions are not necessarily orthogonal.

In the mode plan view of Fig. 1(a), in the position detection area Ap, the plurality of first direction transparent electrode units 2a arranged in the first direction and the plurality of second direction transparent electrode units arranged in the second direction are not drawn. All of 2b. Note that the portion connecting the second direction connecting portions 3b of the second direction transparent electrode unit 2b is shown, and only one of the second direction connecting portions 3b and its periphery are represented. In addition, the wiring 7 formed in the outer peripheral portion of the position detecting area Ap is also drawn as one pattern only in the first direction transparent electrode unit 2a, and the wiring 7 following the second direction transparent electrode unit 2b is omitted. .

In the figure, the outer peripheral portion of the position detecting region Ap is overlapped with the wiring 7, and the outer peripheral portion of the position detecting region Ap is formed of the same material as the first transparent electrode unit 2a and formed on the same surface. The first direction of the pattern is the transparent electrode expansion portion 7a.

Fig. 1(a) is a plan view showing the capacitive touch panel substrate 10 as seen from the "back side" on the side where the reflective conductive layer 5, the low reflection layer 6, and the like are formed. In FIG. 1(a), the insulating layer 4, the reflective conductive layer 5, and the low-reflection layer 6 formed on the other side of the transparent layer such as the first-direction transparent electrode unit 2a and the second-direction transparent electrode unit 2b are When the transparent layer is opaque, it should be in the positional relationship of the layer being covered, so it is indicated by a broken line. However, it is indicated by a broken line only for the sake of easy understanding, and the positional relationship of the layers is not correctly expressed.

Between the plan view of Fig. 1(a) and the partially enlarged cross-sectional view of Fig. 1(b), the dimensions between the constituent elements in the left and right direction in the drawing are not Being maintained in size relationship.

With regard to these drawings, the drawings relating to other embodiments of the present invention are also the same.

In the present embodiment, the outer contour shape of the low-reflection layer 6 when viewed from the direction perpendicular to the first surface S1 of the light-transmitting substrate 1 is as long as the reflective conductive layer 5 is used. The outer contour shape may be included on the inner side, and the same and completely overlapped.

In the present embodiment shown in Fig. 1, the outer contour shape of the low reflection layer 6 is a rectangular shape, and the outer contour shape of the reflective conductive layer 5 is also a rectangular shape. Next, the outer contour shape of the low reflection layer 6 is larger than the outer contour shape of the reflective conductive layer 5. Further, the outer contour shape of the low-reflection layer 6 protrudes outward from the outer contour shape of the reflective conductive layer 5 over the entire periphery thereof. Further, in the present invention, the outer contour shape of the low-reflection layer 6 is an arbitrary shape, and is not limited to a rectangular shape. The same applies to the reflective conductive layer 5.

The outer contour shape of the low-reflection layer 6 is somewhat wide in the alignment accuracy, and the outer contour shape of the reflective conductive layer 5 is large on the outer side and protrudes over the entire circumference by 0.5 μm or more, preferably 1 μm or more. More preferably, the shape is 2 μm or more, and more preferably 4 μm or more. However, even if it is protruded, it is preferably 100 μm or less, preferably 30 μm or less, and more preferably 10 μm or less. If it is too prominent, the portion of the low-reflection layer 6 will affect the display of the display panel seen through the touch panel, which has a bad influence on the display quality.

In the present embodiment, the low reflection layer 6 is in the thickness direction. The reflective conductive layer 5 is formed on the side of the light-transmitting substrate 1, and more specifically, is formed between the reflective conductive layer 5 and the light-transmitting substrate 1.

However, in the present invention, the "reflective conductive layer 5 on the side of the light-transmitting substrate 1" also includes the other surface of the light-transmitting substrate 1, that is, the low reflection is formed on the second surface S2. The form of layer 6. It is important that the operator of the touch panel using the capacitive touch panel substrate 10 is operated by the operator of the capacitive touch panel substrate 10 of the present invention, and is also suitable for viewing the display panel of the capacitive touch panel substrate 10. The observer V of 40 has a configuration in which the observer V has a low reflection layer 6 on the side closer to the reflective conductive layer 5.

[Materials and Forming Method] [Light-transmitting substrate 1]

As the light-transmitting substrate 1, a conventional material can be used, and a glass plate is typically used, and a resin material such as a polyester resin may be used.

[1st direction transparent electrode unit 2a, 2nd direction transparent electrode unit 2b, and 1st direction connection part 3a]

The first direction transparent electrode unit 2a, the second direction transparent electrode unit 2b, and the first direction connecting portion 3a can be formed by a known material and a forming method. For example, ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), AZO (Aluminium Zinc Oxide), etc. can be used by photolithography. The transparent conductor film forms a pattern.

[2nd direction connecting portion 3b and reflective conductive layer 5]

The second direction connecting portion 3b includes at least the reflective conductive layer 5.

As the reflective conductive layer 5, a metal wiring material other than the above-mentioned transparent conductor film, a known material, and a formation method can be used. For example, as the reflective conductive layer 5, a metal such as silver, gold, copper, chromium, platinum, aluminum, palladium or molybdenum (including an alloy thereof) or the like can be used. For example, a pattern formed by a sputtering method may be used as a metal layer of an alloy (also referred to as APC) composed of silver, palladium, and copper, and then patterned by photolithography. The reflective conductive layer 5 formed of these metal materials exhibits metal-specific reflectivity and is generally opaque. Therefore, the light is reflected and easily becomes conspicuous, and the low-reflection layer 6 makes it difficult to stand out.

The reflectivity of the reflective conductive layer 5 is such that the reflectance is 50% or more in the average value of the visible light region (380 to 780 nm). For example, in general, silver is 90% or more, and aluminum is 80% or more. Although gold is reduced to around 50% in a short-wavelength region, it is on average 50% or more.

The reflective conductive layer 5 is not limited to a metal material, and for example, a conductive polymer exhibiting reflectivity can be used.

In the present embodiment, the reflective conductive layer 5 is formed of a silver alloy (also referred to as APC) composed of silver, palladium, and copper, and a patterned metal layer is formed by photolithography.

In the present embodiment, the reflective conductive layer 5 and the wiring 7 are formed of the same material, and are simultaneously formed on the same surface, specifically In other words, the first surface S1 is formed on one side of the light-transmitting substrate 1 at the same time.

The size of the outer shape of the reflective conductive layer 5 is, for example, a rectangular shape having a width of 5 to 20 μm and a length of 20 to 500 μm in the embodiment shown in Fig. 1 . The width is the size of the first direction (the direction of the drawing surface Y), and the length is the size of the second direction (the direction of the plane X).

In addition to the reflective conductive layer 5, the second direction connecting portion 3b may further include a transparent conductive film such as ITO described above, or a structure in which the transparent conductive film is connected to the reflective conductive layer 5 and laminated. .

[insulation layer 4]

The insulating layer 4 is an electrically insulating layer, and a known material and a forming method can be used. For example, as the resin layer, the insulating layer 4 can be patterned by photolithography using an ultraviolet curable acrylic resin.

Also, in this specification, "insulation" and "connection" refer to the term "conductivity."

The insulating layer 4 may be transparent or opaque, and transparent is preferred. This is because the transparency of the capacitive touch panel substrate 10 is not lowered. In the present embodiment, the insulating layer 4 is formed as a transparent layer.

[Low reflection layer 6]

Low reflection layer 6, used according to the International Lighting Commission CIE The Y value of the Yxy color system of JIS-Z8701 of the standard light source C exhibits a low reflectivity layer of 10% or less. Further, the measurement is of course performed from the side on which the surface of the low-reflection layer 6 on the surface of the layer 2 away from the reflective conductive layer 5 is observed. The low reflection layer 6 also exhibits light blocking properties (opacity). This is because the reflected light from the reflective conductive layer 5 can be reduced. That is, the low reflection layer 6 may also be referred to as a "concealed layer" which exhibits low reflectivity and light blocking properties and conceals the reflective conductive layer 5. The low-reflection layer 6 can function as a layer for making the reflective conductive layer 5 inconspicuous.

The light-shielding property is preferably 10% or less in terms of transmittance (1 or more in terms of optical density OD) from the viewpoint of making the reflective conductive layer 5 unobtrusive, and preferably has a transmittance of 1% or less. (Optical density OD2.0 or more), and more preferably, the transmittance is 0.01% or less (optical density OD4.0 or more).

The low-reflection layer 6 is a layer which exhibits a dark color such as black in a resin binder composed of a cured product such as a curable resin, and can form a pattern by photolithography. A photosensitive resin such as an ultraviolet curable acrylic resin can be used for the curable resin. In the present embodiment, the low-reflection layer 6 is patterned by photolithography using an ultraviolet curable acrylic resin containing carbon black.

In order to make the low-reflection layer 6 appear dark or the like, it is also possible to use a plurality of colored pigments such as red, yellow, blue, and green other than carbon black to present a black layer. For example, a color pigment using three colors of red, yellow, and blue may be black. The so-called dark color means black, navy, The dark green color is low in color, and the above Y shows a color of 10% or less.

In other words, one or two or more of a black pigment, a white pigment, a red pigment, a yellow pigment, a blue pigment, a green pigment, and a violet pigment can be used as the coloring pigment used for the low-reflection layer 6.

The low-reflection layer 6 may be formed of an inorganic material such as chromium oxynitride which exhibits a dark color.

The low reflection layer 6 is preferably electrically insulating. When the low-reflection layer 6 is electrically conductive, it is difficult to ensure the insulation of the portion which is required to have insulation due to the combination of the layer structure and the pattern shape. For example, in the second embodiment shown in FIG. 1, the insulation of the second direction transparent electrode unit 2b and the first direction connection portion 3a is ensured in the second embodiment of FIG. difficult.

[Wiring 7]

For the wiring 7, a known material and a forming method can be employed. For example, a metal such as silver, gold, copper, chromium, platinum, aluminum, palladium or molybdenum (including an alloy thereof) or the like can be used for the wiring 7. For example, a pattern formed by a sputtering method may be used as a metal layer of an alloy (also referred to as APC) composed of silver, palladium, and copper, and then patterned by photolithography.

In the present embodiment, the wiring 7 is formed of a metal layer of a silver alloy (also referred to as APC) composed of silver, palladium, and copper. In short, in the present embodiment, the reflective conductive layer 5 and the wiring 7 are formed of the same material, and are simultaneously formed on the same surface, and specifically, are formed on one side of the light-transmitting substrate 1 at the same time. That is, the first surface S1.

〔Production method〕

The capacitive touch panel substrate 10 as described above can be manufactured as follows.

First, the low reflection layer 6 is formed on the first surface S1 which is one of the surfaces of the light-transmitting substrate 1. Next, the reflective conductive layer 5 as the second direction connecting portion 3b and the wiring 7 are simultaneously patterned by the same material. Next, the insulating layer 4 is patterned. Next, the first direction transparent electrode unit 2a, the second direction transparent electrode unit 2b, and the first direction connecting portion 3a are simultaneously patterned by the same material. In this manner, the capacitive touch panel substrate 10 can be manufactured.

[Effect of this embodiment]

By fabricating the above-described configuration, in the capacitive touch panel substrate 10 of the present embodiment, all of the reflective conductive layers 5 used in the connection portions between the transparent electrode units can be made of a low reflection layer. 6 to hide the structure, so the connection can be effectively increased to the extent of its difficulty.

Further, in the present embodiment, the reflective conductive layer 5 is formed of the same material as the wiring 7, and the reflective conductive layer 5 can be completed in the same step as the wiring 7 without increasing the number of steps, so that the reflection can be made. The structure in which the conductive layer 5 becomes unobtrusive is realized without increasing the cost.

<<Second Embodiment: A splicing portion formed later

Fig. 2 (a) is a schematic plan view showing a second embodiment of the capacitive touch panel substrate 10 according to the present invention, and Fig. 2 (b) is a partially enlarged cross-sectional view taken along line C-C of Fig. 2 (a).

In the present embodiment, the first direction transparent electrode unit 2a and the second direction transparent electrode unit 2b are formed first, and then the second direction connecting portion 3b is formed.

The capacitive touch panel substrate 10 of the embodiment shown in FIG. 2 is basically the same except for the first embodiment shown in FIG. Therefore, the description of the same portions will be omitted.

a) The formation of the reflective conductive layer 5 and the wiring 7, and the order of formation of the first-direction transparent electrode unit 2a, the second-direction transparent electrode unit 2b, and the first-direction splicing portion 3a are reversed. (In other words, the positional relationship of the layers of the front and back of the insulating layer 4 is reversed).

b) The formation of the insulating layer 4, the formation of the first-direction transparent electrode unit 2a, the second-direction transparent electrode unit 2b, and the first-direction splicing portion 3a are reversed due to the above a), and the insulating layer The formation of 4 is opposite to the order in which the reflective conductive layer 5 and the wiring 7 are formed.

〔Production method〕

The capacitive touch panel substrate 10 as described above can be manufactured as follows.

First, the low reflection layer 6 is formed on the first surface S1 which is one of the surfaces of the light-transmitting substrate 1. Next, the first direction transparent electrode unit 2a, the second direction transparent electrode unit 2b, and the first direction connecting portion 3a are simultaneously patterned by the same material. Next, the insulating layer 4 is patterned. Next, the reflective conductive layer 5 as the second direction connecting portion 3b and the wiring 7 are simultaneously patterned by the same material. In this manner, the capacitive touch panel substrate 10 can be manufactured.

[Material of Reflective Conductive Layer 5 and Wiring 7]

In the present embodiment, the pattern formation of the reflective conductive layer 5 and the wiring 7 is performed after the first direction transparent electrode unit 2a, the second direction transparent electrode unit 2b, and the first direction connecting portion 3a are simultaneously patterned. Therefore, in the materials of the reflective conductive layer 5 and the wiring 7, it is not necessary to take into consideration the advantage that the first direction transparent electrode unit 2a or the like is resistant to the etching liquid at the time of pattern formation.

Therefore, in the present embodiment, as the material of the reflective conductive layer 5 and the wiring 7, a wiring material (referred to as MAM) having a three-layer structure of molybdenum (Mo), aluminum (Al), or molybdenum (Mo) can be used.

[Effect of this embodiment]

By fabricating the above-described configuration, in the capacitive touch panel substrate 10 of the present embodiment, all of the reflective conductive layers 5 used in the connection portions between the transparent electrode units can be made of a low reflection layer. 6 to hide the structure, so the connection can effectively increase its difficult to see the eye degree.

Further, in the present embodiment, the reflective conductive layer 5 is formed of the same material as the wiring 7, and the reflective conductive layer 5 can be completed in the same step as the wiring 7 without increasing the number of steps, so that the reflection can be made. The structure in which the conductive layer 5 becomes unobtrusive is realized without increasing the cost.

<<Third Embodiment: Joints formed first and through holes are continued

Fig. 3 (a) is a schematic plan view showing a third embodiment of the capacitive touch panel substrate 10 according to the present invention, and Fig. 3 (b) is a partially enlarged cross-sectional view taken along line C-C of Fig. 3 (a).

In the present embodiment, after the second direction connecting portion 3b is formed, the insulating layer 4 having the through hole 4h is formed over the entire area of the position detecting area Ap, and thereafter, the first direction transparent electrode unit 2a and the second direction transparent electrode are formed. The unit 2b has a structure in which the second direction transparent electrode unit 2b and the second direction connecting portion 3b are connected by the through hole 4h.

The capacitive touch panel substrate 10 of the embodiment shown in FIG. 3 is basically the same except for the first embodiment shown in FIG. Therefore, the description of the same portions will be omitted.

a) The insulating layer 4 is formed not only in the joint portion but also in the entire region of the position detecting region Ap, and the portion of the through hole 4h in which the second-direction transparent electrode unit 2b and the second-direction connecting portion 3b are connected is not formed. a little.

b) Because the a), the reflective conductive layer 5 as the second direction connecting portion 3b is continuous with the second-direction transparent electrode unit 2b in the portion of the through hole 4h.

〔Production method〕

As described above, the capacitive touch panel substrate 10 can be formed with the through hole 4h as a non-formed portion of the layer at the same time as the formation of the insulating layer 4, and is formed outside the entire area of the position detecting area Ap. The first embodiment is manufactured in the same manner.

[Effect of this embodiment]

By fabricating the above-described configuration, in the capacitive touch panel substrate 10 of the present embodiment, all of the reflective conductive layers 5 used in the connection portions between the transparent electrode units can be made of a low reflection layer. 6 to hide the structure, so the connection can be effectively increased to the extent of its difficulty.

Further, in the present embodiment, the reflective conductive layer 5 is formed of the same material as the wiring 7, and the reflective conductive layer 5 can be completed in the same step as the wiring 7 without increasing the number of steps, so that the reflection can be made. The structure in which the conductive layer 5 becomes unobtrusive is realized without increasing the cost.

"Fourth Embodiment: Connections formed after the connection, through hole connection"

4(a) is a capacitive touch panel substrate according to the present invention Fig. 4(b) is a partially enlarged cross-sectional view taken along line C-C of Fig. 4(a).

In the present embodiment, after the first direction transparent electrode unit 2a and the second direction transparent electrode unit 2b are formed, the insulating layer 4 having the through holes 4h is formed in the entire area of the position detection area Ap, and thereafter, the second direction is formed. The portion 3b has a structure in which the through hole 4h and the second transparent electrode unit 2b are connected to each other.

The capacitive touch panel substrate 10 of the embodiment shown in FIG. 4 is basically the same except for the second embodiment shown in FIG. 2 described above. Therefore, the description of the same portions will be omitted.

a) The insulating layer 4 is formed not only in the joint portion but also in the entire region of the position detecting region Ap, and the portion of the through hole 4h in which the second-direction transparent electrode unit 2b and the second-direction connecting portion 3b are connected is not formed. a little.

b) Because the a), the reflective conductive layer 5 as the second direction connecting portion 3b is continuous with the second-direction transparent electrode unit 2b in the portion of the through hole 4h.

〔Production method〕

As described above, the capacitive touch panel substrate 10 can be formed with the through hole 4h as a non-formed portion of the layer at the same time as the formation of the insulating layer 4, and is formed outside the entire area of the position detecting area Ap. The second embodiment is manufactured in the same manner.

[Effect of this embodiment]

By fabricating the above-described configuration, in the capacitive touch panel substrate 10 of the present embodiment, all of the reflective conductive layers 5 used in the connection portions between the transparent electrode units can be made of a low reflection layer. 6 to hide the structure, so the connection can be effectively increased to the extent of its difficulty.

Further, in the present embodiment, the reflective conductive layer 5 is formed of the same material as the wiring 7, and the reflective conductive layer 5 can be completed in the same step as the wiring 7 without increasing the number of steps, so that the reflection can be made. The structure in which the conductive layer 5 becomes unobtrusive is realized without increasing the cost.

<<Fifth Embodiment: The reflective conductive layer 5 is partially exposed by the low reflection layer 6>>

Fig. 5 (a) is a schematic plan view showing a fifth embodiment of the capacitive touch panel substrate 10 according to the present invention, and Fig. 5 (b) is a partially enlarged cross-sectional view taken along line C-C of Fig. 5 (a).

In the present embodiment, one of the low-reflection layer 6 and the reflective conductive layer 5 partially overlaps, and as a result, the reflective conductive layer 5 is partially exposed by the low-reflection layer 6 and is visible.

The capacitive touch panel substrate 10 of the embodiment shown in FIG. 5 is basically the same except for the first embodiment shown in FIG. Therefore, the description of the same part Omitted.

a) The low-reflection layer 6 partially overlaps with one of the reflective conductive layers 5, and the reflective conductive layer 5 is partially exposed by the low-reflection layer 6, and this can be seen.

[degree of overlap between the low-reflection layer 6 and the reflective conductive layer 5]

In each of the embodiments described so far, the low-reflection layer 6 is overlapped over the entire area of the reflective conductive layer 5, and the outer contour shape of the low-reflection layer 6 is included inside the outer contour shape of the reflective conductive layer 5. form. Therefore, the reflective conductive layer 5 is completely concealed by the low reflection layer 6 in its entire region, and the reflective conductive layer 5 cannot be seen.

In order to make the reflective conductive layer 5 inconspicuous, it is preferable that the reflective conductive layer 5 overlaps the low-reflection layer 6 in its entire region, but even if the reflective conductive layer 5 is somewhat seen, Practically, if the adverse effect on the display quality caused by the reflective conductive layer 5 is slight, or the deterioration of the display quality due to the reflective conductive layer 5 is acceptable, the reflective conductive layer 5 is used. A form in which a part of the low reflection layer 6 is exposed is also possible.

For example, even if the low-reflection layer 6 covers the display screen, it is preferable that the low-reflection layer 6 is as small as possible in view of adverse effects on display quality. In other words, in consideration of the adverse effect on the display quality caused by the low-reflection layer 6 itself, a form in which the reflective conductive layer 5 is partially exposed by the low-reflection layer 6 may be employed. That is, from the viewpoint of completely concealing the reflective conductive layer 5, the minimum shape of the low reflection layer 6 is opposite. The radio conductive layers 5 have the same shape and the same size. However, if the occurrence of the exposed portion E is more or less, the outer contour shape of the low-reflection layer 6 is smaller than the outer contour shape of the reflective conductive layer 5, and even if a slight positional shift occurs, it can be made low. The total area of the area of the reflective layer 6 and the area of the exposed portion E is reduced. Therefore, it is possible to reduce the elements that block the display screen.

In addition, it should be considered that the positional alignment accuracy is not re-divided, and the positional relationship of the relative positional relationship between the reflective conductive layer 5 and the low-reflection layer 6 is shifted, resulting in a part of the reflective conductive layer 5 being composed of the low-reflection layer 6. Exposed occasions.

In the fifth embodiment, the reflective conductive layer 5 is partially exposed by the low-reflection layer 6 in such a state.

5(a) and 5(b), the reflective conductive layer 5 is shown, and as a result of the position of the low reflection layer 6 being shifted to the right in the drawing, the reflective conductive layer 5 is exposed by the low reflection layer 6. A part of the condition of the exposed portion E is generated. As a result, the exposed portion E becomes visually recognized by the observer V. In the figure, the position of the reflective conductive layer 5 in the direction in which the line extends (in the X-axis direction) is shifted, but the relationship between the relative positional shift of the reflective conductive layer 5 and the low-reflection layer 6 is reflected. When the conductive layer 5 is used as a reference, the position is shifted in the line width direction, and the position is shifted in both the extending direction of the line of the reflective conductive layer 5 and the line width direction.

Fig. 6 is a view showing a direction in which the relative positions of the reflective conductive layer 5 and the low-reflection layer 6 are shifted, and the two directions are illustrated. Figure 6 (a) shows the direction in which the lines of the reflective conductive layer 5 extend (in the figure In the case of the X-axis direction, FIG. 6(b) shows the case where the line width of the line of the reflective conductive layer 5 is in the Y-axis direction. The directions indicated by the two arrow marks in FIGS. 6(a) and 6(b) are directions in which the relative positions of the reflective conductive layer 5 and the low reflection layer 6 are shifted. Fig. 6(a) corresponds to the positional shift relationship of Fig. 5 described above.

Fig. 6(a) shows a state in which the low-reflection layer 6 is displaced from the X-axis direction in the right direction of the drawing by the low-reflection layer 6, and an exposed portion E is formed on the left side of the reflective conductive layer 5. 6(b) shows a state in which the low-reflection layer 6 is displaced from the reflective conductive layer 5 in the Y-axis direction in the downward direction of the drawing, and an exposed portion E is formed on the upper side of the reflective conductive layer 5. In these drawings, in order to make it easy to judge, the reflective conductive layer 5 and the low-reflection layer 6 are not shaded on the inner side of the outer contour shape, and only the portion of the exposed portion E is shaded. Further, the outer contour line of the portion of the reflective conductive layer 5 shielded by the low reflection layer 6 is indicated by a broken line.

(area ratio of the reflective conductive layer 5 masked by the low reflection layer 6)

In this manner, the low-reflection layer 6 overlaps with a part of the reflective conductive layer 5, the reflective conductive layer 5 is partially exposed by the low-reflection layer 6, and the low-reflection layer 6 is overlapped with the portion of the reflective conductive layer 5. The area is 30% or more, preferably 50% or more, more preferably 70% or more, and still more preferably 80% or more of the area of the area of the reflective conductive layer 5.

Since the aforementioned area ratio is less than the above-mentioned value, the display quality is lowered.

As can be seen from FIG. 6, the reflective conductive layer 5 is composed of a low reflection layer 6 The size of the protrusion, for example, 1 μm or the like, regardless of the direction of the protrusion, even if it is the same size, in the line direction of the reflective conductive layer 5 (in the X-axis direction of the drawing), and in the line width direction ( When the drawing is extended in the Y-axis direction, the ratio of the area of the exposed portion E of the reflective conductive layer 5 exposed by the low-reflection layer 6 to the area of the area of the reflective conductive layer 5 is different. In particular, the exposed portion E of the reflective conductive layer 5 has a large adverse effect on the display quality, and is extended when the position is shifted in the line width direction shown in FIG. 6(b). In such a case, the area ratio blocked by the low-reflection layer 6 can be made equal to or higher than the above value, thereby suppressing deterioration in display quality.

When the specific example is shown, the line width of the line of the reflective conductive layer 5 is 15 μm, and when the total length of the line is only 3 μm in the line width direction and is not concealed by the low reflection layer 6, the area ratio becomes {(15 μm - 3 μm) / 15 μm} × 100 = 80%.

[Effect of this embodiment]

By fabricating the above-described configuration, in the capacitive touch panel substrate 10 of the present embodiment, a portion of the reflective conductive layer 5 used in the connection portion between the transparent electrode units can be used as the low reflection layer. 6 to hide the structure, so the connection can increase the difficulty of eye-catching. Further, it is also possible to suppress the adverse effect of the low reflection layer 6 itself on the display quality.

Further, in the present embodiment, the reflective conductive layer 5 is formed of the same material as the wiring 7, and the reflective conductive layer 5 can be completed in the same step as the wiring 7 without increasing the number of steps, so that it can be made The structure in which the reflective conductive layer 5 becomes unobtrusive is realized without increasing the cost.

Further, by allowing a certain degree of exposure of the reflective conductive layer 5, the accuracy of the alignment can be alleviated, and the adverse effect on the display quality can be suppressed, and the manufacturing can be made easier, and the cost can be reduced.

Deformation Form

The capacitive touch panel substrate 10 of the present invention can adopt other forms than those described above. Hereinafter, a part thereof will be described.

[A form in which the reflective conductive layer 5 is partially exposed by the low reflection layer 6]

A fifth embodiment in which the reflective conductive layer 5 is partially exposed by the low-reflection layer 6 is a modification of the first embodiment.

However, in the present invention, the reflective conductive layer 5 is partially exposed by the low-reflection layer 6, and is not limited to the modified form of the first embodiment. The reflective conductive layer 5 is partially exposed by the low-reflection layer 6, and may be a modified form of another embodiment such as the second embodiment, the third embodiment, the fourth embodiment, or a modification described later.

[A form in which the exposed portion E is used as a reflecting portion]

In the form in which the reflective conductive layer 5 is partially exposed by the low-reflection layer 6, the portion of the reflective conductive layer 5 exposed by the low-reflection layer 6, that is, the exposed portion E, can be actively used as the reflection portion.

For example, in a game machine such as a shooting game, the touch panel including the capacitive touch panel substrate 10 is disposed on the viewer side of the display panel, and is instructed by light irradiation from the gun type light controller. A position detecting means for detecting an arbitrary position in the display screen by receiving the reflected light reflected by the reflecting portion formed by the exposed portion E by the light emitted from the gun type light controller, and detecting the position of the indication in the display screen A reflection position detecting means including a secondary element image sensor such as a CCD capable of photographing a display image, and the reflecting portion detecting means and the reflecting portion formed by the exposed portion E of the capacitive touch panel substrate 10 are provided. The optical non-contact indicating position detecting means can be used as a shooting game machine. Further, when infrared rays are used for the irradiation light, discrimination with visible light can be easily achieved.

When the reflective conductive layer 5 is used as a reflection portion, it is preferable that the reflection light intensity can be enhanced without providing the low reflection layer 6, but the reflective conductive layer 5 changes when the ambient light is irradiated. It must be eye-catching. However, by hiding a part of the reflective conductive layer 5 with the low-reflection layer 6, it is possible to more easily obtain the electrical properties of the substrate which is the electrical connection means of the reflective conductive layer 5, and the optical properties in the display screen. The intensity of the reflected light of one component of the contact indicating position detecting means is related to the positional accuracy of the reflective conductive layer 5 and the low-reflecting layer 6 as the reflective property of the reflective conductive layer 5 of the display quality. The balance of various functions such as ease of manufacture and cost can increase the freedom of design.

Moreover, the optical non-contact indicating position detecting means When the reflecting portion as one constituent element is provided separately from the reflective conductive layer 5, the number of steps is increased, and the cost is increased. However, the exposed portion E of the reflective conductive layer 5 is used for the reflecting portion to reflect The portion is formed at the same time as the same material as the reflective conductive layer 5, and can be provided without increasing the number of steps.

As one of the components of the optical non-contact indicating position detecting means in the display screen, the application of the exposed portion E to the reflecting portion can be used as an instruction to display an arbitrary position in the screen, in addition to the use of the game device. This part is applied to a controller that performs operations such as expanding or reducing the screen at the center. For example, by regularly arranging the exposed portions E, the exposed portion E can function as a grid line in the display screen.

Further, in the above-described type of example, the use of one of the constituent elements of the optical non-contact indicating position detecting means or the use of the touch panel function is that the operator is unable to construct the display screen by both hands. The position is used for remote control. When using the two functions in combination, the operator controls the position where both hands can touch the display screen.

[Addition of the decorative part 8 and use of the front protective plate for the display device]

As illustrated in FIG. 7, in the present invention, the capacitive touch panel substrate 10 may have a decorative portion 8 on the outer peripheral portion of the position detecting area Ap.

The decorative portion 8 is a touch panel including the capacitive touch panel substrate 10, and a display device using the touch panel, so that the observer V of the display device or even the operator of the touch panel is invisible The wiring 7 of the outer peripheral portion of the position detecting area Ap, the control circuit, and the like are hidden, and the appearance is not damaged, and an arbitrary new pattern is displayed.

The capacitive touch panel substrate 10 has the decorative portion 8 on the outer peripheral portion of the position detecting area Ap, and can cover the front cover of the display device 200 as exemplified in FIG. 11(a) as the front protective plate for the display device. The function of 50 can be used as the front protection plate 50 for the display device.

The capacitive touch panel substrate 10 having the configuration of the front protective plate 50 for a display device may be a front touch panel integrated touch panel substrate for a display device. In this case, the surface (the first surface, the first surface S1) of the light-transmitting substrate 1 and the first-direction transparent electrode 2a and the second-direction transparent electrode 2b are opposite sides (the other surface, the second surface) The surface S2) functions as an input surface (touch surface, contact surface) of the touch panel that is in contact with (or close to) the position input of the touch panel sensor as an external conductor such as an operator's finger.

The capacitive touch panel substrate 10 is integrated by the front protective plate 50 for a display device, and the effect of reducing the number of parts and reducing the thickness can be obtained.

[Low reflection layer 6, identical to the material of the decorative portion 8]

The capacitive touch panel substrate 10 also has a decorative portion 8 having a low reflectivity and light blocking property similar to that of the low reflective layer 6 , and the low reflective layer 6 can be combined with the decorative portion 8 Same material To form. Further, the low reflection layer 6 is preferably formed of the same material as the decorative portion 8. By forming the low-reflection layer 6 in the same material as the decorative portion 8, the low-reflection layer 6 can be disposed in the same step as the decorative portion 8 without increasing the number of steps, so that reflective conductivity can be realized without increasing the cost. The sex layer 5 becomes an unobtrusive structure. Of course, in this case, the low-reflection layer 6 and the decorative portion 8 are formed on the same surface of the light-transmitting substrate 1 (see FIG. 7(c)), and can be simultaneously formed in the same step. Further, although FIG. 7(c) shows an example in which the low-reflection layer 6 of the embodiment of FIG. 1 is formed simultaneously with the decorative portion 8, the other low-reflection layer 6 may be formed simultaneously with the decorative portion 8.

The decorative portion 8 has at least a light-shielding layer 8a having a light-shielding property for concealing the wiring 7 and the like, and usually has an infrared-ray transmission window 8b or the like. In the infrared ray transmission window 8b, when the mobile phone is placed in the ear during a call, it is necessary to prevent the erroneous operation of the touch panel or to extend the battery life by causing the display of the display panel to disappear. A portion of an infrared sensor that is provided to sense a human body sensing sensor that is close to the human skin.

The constituent elements of the decorative portion 8 formed of the same material as the low-reflection layer 6 include, for example, a light-shielding layer 8a, and an infrared-ray transmitting layer 8bL formed in a portion of the infrared-ray transmitting window 8b.

[Light shielding layer 8a]

The light-shielding property of the light-shielding layer 8a differs depending on the required specifications and display color, and is preferably 3% or less (in terms of optical density OD, 1.5 or more), and preferably 1% or less in transmittance. concentration It is more preferable that the transmittance is 0.01% or less (optical density OD4.0 or more). When the transmittance exceeds the above value, the parts to be concealed and the like become visible.

The light shielding layer 8a can be formed by a known material and a forming method. For example, the light shielding layer 8a can be formed of a layer in which a coloring pigment is contained in a resin binder composed of a cured product of a curable resin. As the curable resin, a photosensitive resin such as an ultraviolet curable acrylic resin can be used.

The coloring pigment used for the light shielding layer 8a is not particularly limited as long as it is used in accordance with the color expressed in the light shielding layer 8a. For example, as the coloring pigment, a black pigment, a white pigment, a red pigment, a yellow pigment, a blue pigment, a green pigment, a violet pigment, or the like can be used. The coloring pigment may be used singly or in combination of a plurality of colors of the same type or colored pigments of different colors.

The color of the light-shielding layer 8a which is formed of the same material as the low-reflection layer 6 is not a reflective color as white, but a dark color such as black. Further, black, as a new type of color expressed in the decorative portion 8, is also a preferred color.

[Infrared transmission window 8b]

As shown in Fig. 7 (a) and Fig. 7 (b), the decorative portion 8 is provided with an infrared ray transmitting layer 8bL in a portion which is a light transmitting window 8b which is transparent to visible light and which is transparent to infrared light. When the light-shielding layer 8a is black, if carbon black is used as the black pigment, it is not only visible. Since the light also has a light-shielding property to the infrared light, the infrared light transmitting layer 8bL is required as a layer different from the light shielding layer 8a.

The transmission of infrared light to the infrared ray transmission window 8b differs depending on the infrared ray-using components that are applied to the infrared sensor such as the required specification, the display color, and the infrared light transmission window 8b. However, if an example is displayed, The transmittance in the infrared region may be 70% or more. The infrared region having a transmittance of 70% or more is not necessarily required to be a region of 780 nm or more, and for example, a region of 850 nm or more can sufficiently function. Moreover, the upper limit of the infrared ray region having a transmittance of 70% or more is sufficient as long as it satisfies the near-infrared region, and it is usually sufficient to satisfy 1300 nm.

The light-shielding property of the infrared ray transmitting window 8b to visible light varies depending on the required specifications and the display color, but the portion of the infrared ray transmitting window 8b is usually dot-shaped and small, and does not necessarily have to match the infrared ray transmitting window 8b and the light shielding layer. The level of shading of 8a. Therefore, the light-shielding property of the infrared ray transmitting window 8b to visible light is, for example, a maximum of 50% or less in transmittance (expressed as 0.2 or more in optical density OD), and preferably a transmittance of 25% or less (optical The concentration is preferably OD 0.6 or more, and more preferably 10% or less (optical density OD 1.0 or more).

In this way, the infrared ray transmission window 8b has a transmittance of 70% or more at a wavelength of 850 nm or more and 1300 nm or less in the infrared light region, and has a transmittance of 10% or less in the visible light region. Moreover, this transmittance is not an average value but a value of each wavelength.

(Infrared transmission layer 8bL)

The infrared ray transmitting layer 8bL is usually formed in a color similar to that of the light shielding layer 8a in order to make the infrared ray permeable window 8b inconspicuous. Next, the infrared ray transmitting layer 8bL exhibits a light-shielding property to visible light while exhibiting transparency to infrared light.

The color of the infrared ray transmitting layer 8bL which is formed of the same material as that of the low-reflection layer 6 is not a reflective color as white, but a dark color such as black. Further, black, as a new type of color expressed in the decorative portion 8, is also a preferred color.

The infrared ray transmitting layer 8bL does not contain a black pigment such as carbon black, and can form a dark color such as black by making a plurality of types of chromatic colored pigments having different colors, for example, containing red, yellow, and blue. Floor.

By forming the low-reflection layer 6 in the same material as the infrared ray-transmissive layer 8bL, the low-reflection layer 6 can be disposed in the same step as the infrared ray-transmissive layer 8bL of the decorative portion 8 without increasing the number of steps, so that the cost can be increased without increasing the cost. On the other hand, the reflective conductive layer 5 is made into an unobtrusive structure.

Further, when the wiring 7 is also provided, in order to hide the wiring 7 by the light shielding layer 8a, the order in which the light shielding layer 8a and the wiring 7 are formed on the light-transmitting substrate 1 is observed when the capacitive touch panel substrate 10 is used. The direction of the front and back of the operator is limited. However, when the infrared ray transmitting layer 8bL in which the wiring 7 does not overlap, the order in which the infrared ray transmitting layer 8bL and the wiring 7 are formed on the light-transmitting substrate 1 is not covered as described above. The limitation is as in the case of the light layer 8a. For example, after the low-reflection layer 6 and the light-shielding layer 8a are simultaneously formed, after the wiring 7 is formed on the light-shielding layer 8a, the infrared-ray transmission layer 8bL is formed in the portion of the light-shielding layer 8a of the light-shielding layer 8a, or On the other hand, (b) After the low reflection layer 6 and the light shielding layer 8a are simultaneously formed, the infrared ray transmitting layer 8bL is formed in the portion of the light shielding layer 8a of the light shielding layer 8a, and then the wiring 7 is formed on the light shielding layer 8a. In this regard, in the form of forming the low-reflection layer 6 in the same material as the infrared ray transmitting layer 8bL, there is an advantage that the degree of freedom of product design is not hindered.

[Topcoat 9]

The capacitive touch panel substrate 10, as illustrated in FIG. 8, may include a transparent overcoat layer 9. In the figure, the outer coating layer 9 is formed as one of the upper surfaces of the surface of the first surface S1 which is one surface of the transparent substrate 1. In the figure, the form of the overcoat layer 9 is added to the form of Fig. 1, but the overcoat layer 9 may be added in other forms. By the overcoat 9, the reliability can be improved.

As the overcoat layer 9, a known material and a formation method can be employed. For example, a transparent resin is used for the overcoat layer 9, and a curable resin is preferably used from the viewpoint of heat resistance, and a thermosetting epoxy resin, an ultraviolet curable acrylic resin, or the like can be used. When a pattern is formed, it can be formed by photolithography.

[C] display device:

A display device according to the present invention includes at least a display panel and is equipped A display device of the capacitive touch panel substrate 10 placed on the viewer side of the display panel. Hereinafter, a representative two embodiment will be described as an example.

"First Embodiment"

The display device 100 according to the present invention illustrated in FIG. 9 includes at least the display panel 40, the viewer V side of the display panel 40, and the touch panel 30 including the capacitive touch panel substrate 10 described above. A configuration example of the front protective plate 50 for a display device such as a cover glass.

The display panel 40 is typically a liquid crystal display panel or an electroluminescence (EL) panel, and may be a display device of an electronic paper panel or a cathode ray tube, or may be any known display panel.

The touch panel 30 includes a capacitive touch panel substrate 10 and further includes necessary components such as a control circuit and a connector for realizing the function of the touch panel.

In this configuration, since the front protective plate 50 for the display device is additionally provided with the touch panel 30, the capacitive touch panel substrate 10 is provided with the low reflective layer 6 for the reflective conductive layer 5. It is sufficient to arrange it in the direction close to the observer V. In other words, one of the reflective conductive layer 5 and the low-reflection layer 6 may be located farther from the thickness direction of the light-transmitting substrate 1, and the one side of the light-transmitting substrate 1 may be the first surface. S1 can be arranged as the direction of the front side in addition to the direction of the back side.

For the front protection board 50 for the display device, conventional knowledge can be adopted. For example, a glass plate such as chemically strengthened glass or a resin plate such as an acrylic resin can be used as a transparent substrate. The central portion of the substrate serves as a display region, and the outer peripheral portion of the display region is black or the like. The color and the pattern are decorated with an opaque decorative part.

As the front protective plate 50 for a display device, the touch panel 30 including the capacitive touch panel substrate 10 may have a configuration in which the decorative portion 8 is omitted when the outer peripheral portion of the position detecting region Ap includes the decorative portion 8.

With such a configuration, the connection portion between the transparent electrode units of the capacitive touch panel substrate 10 included in the touch panel 30 can be a display device that is not easily noticeable.

"Second Embodiment"

The display device 100 according to the present invention illustrated in FIG. 10 includes at least the display panel 40 and the observer side of the display panel 40, and includes the above-described electrostatic capacitance type in which a front protective plate 50 for a display device such as a cover glass is used. A configuration example of the touch panel 30 of the touch panel substrate 10.

By adopting such a configuration, in addition to the effects of the configuration of Fig. 9, the number of parts can be reduced and the effect of thinning can be obtained.

Further, the wiring 7 formed on the decorative portion 8 is made of the same material as the reflective conductive layer 5, or the low-reflection layer 6 and the decorative portion 8 are made of the same material, and the same step can be performed without increasing the number of steps. , setting layers and layers formed of the same material, so no increase in cost On the other hand, the reflective conductive layer 5 is made in an unobtrusive structure.

"Intermediation of resin layers such as adhesive sheets"

For example, the display device 100 according to the embodiment illustrated in FIG. 8 is between the touch panel 30 including the capacitive touch panel substrate 10 and the display panel 40, and the front cover of the touch panel 30 and the display device. In the display device 100 of the present invention, a well-known resin layer such as an adhesive layer may be filled between the respective constituent members. By reducing the light reflection on the surface of the member by the resin layer, the display can be made easier to see.

[D] Use:

The use of the capacitive touch panel substrate 10 according to the present invention, that is, the display device 100 is not particularly limited. For example, it can be used for a mobile phone such as a smart phone, a portable information terminal such as a tablet computer, a personal computer, a car navigation device, a digital camera, an electronic manual, a game machine, a vending machine, an ATM terminal, a POS terminal, and the like.

1‧‧‧Transmissive substrate

2a‧‧‧1st direction transparent electrode unit

2b‧‧‧2nd direction transparent electrode unit

3a‧‧‧1st direction connection

3b‧‧‧2nd direction continuation

4‧‧‧Insulation

5‧‧‧Reflective conductive layer

6‧‧‧Low reflection layer

7‧‧‧Wiring

7a‧‧‧1st direction transparent electrode expansion

10‧‧‧Electrostatic touch panel substrate

Ap‧‧‧Location Detection Area

C‧‧‧Standard light source

S1‧‧‧ first side

S2‧‧‧2nd

V‧‧‧ Observer

Claims (9)

A capacitive touch panel substrate having a first surface and a second substrate having a second surface opposite to the first surface; and the first surface and the first surface of the light-transmitting substrate One of the two faces is arranged in a plurality of first direction transparent electrode units in the first direction; the same material as the first direction transparent electrode unit is formed on the same surface, and the first direction transparent electrode unit is connected a first direction connecting portion of each other; a material similar to the first direction transparent electrode unit is formed on the same surface, is located between the first direction transparent electrode units, and is disposed between the first direction connecting portions and arranged a plurality of second-direction transparent electrode units in the second direction intersecting the first direction; and the second-direction transparent electrode units are connected to each other, and the first direction connecting portion is insulated by an insulating layer, and includes reflective conductivity The second direction connecting portion of the layer; and the Y value of the Yxy color system using the standard light source C according to the International Commission on Illumination CIE exhibits a low reflectivity of 10% or less, which is perpendicular to the light transmissive substrate When viewed in the direction of one surface, the low-reflection layer overlapping at least a part of the reflective conductive layer is arranged on the outer peripheral portion of the position detecting region of the first-direction transparent electrode unit and the second-direction transparent electrode unit. The one surface of the light-transmitting substrate has a decorative portion, and the low-reflection layer and the decorative portion are formed of the same material. The capacitive touch panel substrate according to claim 1, wherein an area of the overlapping portion between the low reflection layer and the reflective conductive layer is 30% or more of an area of the reflective conductive layer. The capacitive touch panel substrate of claim 2, wherein the outer contour shape of the low-reflection layer when viewed from a direction perpendicular to a surface of the one of the light-transmitting substrates is the reflectivity The outer contour shape of the conductive layer is included on the inner side. The capacitive touch panel substrate according to the first aspect of the invention, wherein the outer peripheral portion of the position detecting region in which the first direction transparent electrode unit and the second direction transparent electrode unit are arranged is the aforementioned light transmissive substrate One of the surfaces has wiring, and the reflective conductive layer and the wiring are formed of the same material. The capacitive touch panel substrate according to any one of claims 1 to 4, wherein the low-reflection layer is formed on the light-transmissive substrate side with respect to the reflective conductive layer in a thickness direction. The capacitive touch panel substrate of claim 5, wherein the low reflection layer is formed between the reflective conductive layer and the light transmissive substrate. Such as the capacitive touch panel base of claim 1 The board in which the surface of the light-transmitting substrate opposite to the one surface is functioning as an input surface of the touch panel. The capacitive touch panel substrate according to any one of claims 1 to 4, wherein the low-reflection layer is formed in a thickness direction from a distance from the light-transmitting substrate to the reflective conductive layer. Farther side. A display device comprising: a display panel; and a capacitive touch panel substrate according to any one of claims 1 to 4, which is disposed on an observer side of the display panel.