JP2014021522A - Touch panel substrate, and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a touch panel substrate and a display device in which even when a mesh electrode, in which an opaque reflective conductive layer such as metal is formed in a mesh state is used as a position-detecting electrode, the mesh electrode is inconspicuous.SOLUTION: A touch panel substrate 10 is configured so that: on one surface of a translucent substrate 1, a position detecting electrode 2 including a reflective conductive layer 3, in which the layer itself is opaque and exhibits visible light reflectance; in a part of a mesh electrode 2M, in which at least a reflective conductive layer 3 is formed in a mesh state, a low reflection layer 5 whose visible light reflection is lower than that of the reflective conductive layer 3, such as a color of black, is provided so that it superimposes on the reflective conductive layer 3 and that it is located nearer to an observer, who is a touch panel operator as well, than to the reflective conductive layer 3 in the thickness direction. An electrode other than the mesh electrode 2M, such as a bridge connection 2B of an intersection part 2C in a bridge structure, may be configured in the same way. A display device uses the touch panel substrate.

Description

  The present invention relates to a touch panel substrate and a display device. In particular, the present invention relates to a touch panel substrate in which a mesh electrode is hardly noticeable even when a mesh electrode in which an opaque reflective conductive layer such as metal is formed in a mesh shape is used as a position detection electrode, and a display device including the touch panel substrate.

  In recent years, touch panels have been rapidly spread as position input devices used in combination with display panels in various display devices such as smartphones and tablet PCs (personal computers). Various types of touch panels, such as electromagnetic induction type and resistive film type, have been known for a long time, and they have been used for various purposes. Among them, multi-touch (multi-point simultaneous input) has attracted particular attention recently. This is a capacitive touch panel capable of

16A shows a front panel protection for a display device in which a touch panel 30 including a conventional touch panel substrate 20 includes a display panel 40 for displaying an image such as a liquid crystal display panel or an EL panel (electrolytic light emitting panel), and a cover glass. FIG. 10 is an exploded plan view schematically showing an example of a conventional display device 200 having a configuration arranged between a plate 50 and the plate 50. The touch panel substrate 20 shown in the figure is a case where the position detection electrode is a capacitance type.
The partial enlarged plan views of FIGS. 16B and 16C are diagrams schematically showing an example of the electrode pattern shape in the capacitance method. FIG. 16D is a partially enlarged plan view paying attention to the transparent electrode element, and FIG. 16E is a partially enlarged plan view paying attention to the connection part between the transparent electrode elements in FIG. .
FIG. 17 is a partially enlarged cross-sectional view of the periphery of the connection portion taken along line CC in FIG.

In general, in a capacitive touch panel, as illustrated in FIGS. 16B to 16E, a plurality of first electrodes extending in the X direction, which is the left-right direction in the drawing, as the position detection electrode 2. 2a and a plurality of second electrodes 2b which are orthogonal to the X direction and extend in the Y direction which is the vertical direction in the drawing. The plurality of first electrodes 2a extending in the X direction are arranged in the Y direction, and the plurality of second electrodes 2b extending in the Y direction are arranged in the X direction. Here, an electrode extending in the X direction is referred to as a first electrode 2a, and an electrode extending in the Y direction is referred to as a second electrode 2b.
As a capacitive touch panel, the first electrode 2a and the second electrode 2b may be formed on different translucent substrates, but the same substrate is also formed on the same surface of the same substrate. By adopting such a configuration, there is an advantage that the relative positional accuracy of each other can be improved.
The conventional touch panel substrate 20 illustrated in the figure also has a form in which the first electrode 2a and the second electrode 2b are formed on the same surface of one translucent substrate.

  As the pattern of the first electrode 2a and the second electrode 2b, various patterns are known in the projection capacitive method, but in the pattern illustrated in FIG. ), A plurality of rhombus-shaped first transparent electrode elements 2aE and first transparent electrode elements 2aE adjacent to each other and having a smaller area than the first transparent electrode element 2aE, And an unillustrated take-out portion that extends to the outer periphery of the position detection region and electrically connects the first transparent electrode element 2aE to the wiring 7. Similarly, as shown in FIG. 16 (c), one second electrode 2b also connects a plurality of rhombus-shaped second transparent electrode elements 2bE and the second transparent electrode elements 2bE adjacent to each other to form a first transparent electrode. The second connecting portion 2bC has a smaller area than the electrode element 2aE, and a take-out portion (not shown) that electrically connects the second transparent electrode element 2bE to the wiring 7.

  The first electrode 2a and the second electrode 2b whose extending directions intersect each other are portions of the intersecting portion 2C where the first connecting portion 2aC and the second connecting portion 2bC intersect with each other by a bridge structure with the insulating layer 4 interposed therebetween. Are formed insulated from each other.

The first electrode 2a and the second electrode 2b are usually patterned by a transparent conductive thin film whose layer itself such as ITO (Indium Tin Oxide) is transparent.
However, as the area of the touch panel increases, the transparent electrode is required to have a smaller area resistivity. However, a transparent conductor thin film such as ITO has a problem in that the transparency decreases when the area resistivity is reduced.

As a technique that can solve this problem, a transparent electrode has been proposed in which transparency is secured by forming a conductive layer made of a metal or the like that is opaque in a mesh shape (Patent Document 1).
Such a conductive layer using a metal exhibits reflectivity specific to the metal and can be said to be a reflective conductive layer that reflects visible light.

  In the touch panel substrate 10 of FIG. 16, as shown in FIG. 16D and FIG. 16E, the first transparent electrode element 2aE and the second transparent electrode element 2bE have a layer made of metal or the like which is opaque and has visible light. The reflective conductive layer 3 that reflects light is formed of a mesh electrode 2M that is formed in a mesh shape to ensure transparency.

JP 2010-108878 A

  However, as shown in the cross-sectional view of FIG. 17, when the mesh electrode 2M is formed of the reflective conductive layer 3, unlike the transparent conductive thin film such as ITO, the mesh electrode 2M is reflected when irradiated with the light L. , May stand out. The phenomenon in which the reflective conductive layer 3 is conspicuous is conspicuous because the distance from the observer V who sees the display panel through the display panel or the touch panel operator becomes smaller as the size of the touch panel becomes smaller. Tend to be.

  An object of the present invention is to provide a touch panel substrate in which a mesh electrode is not noticeable even when a mesh electrode in which an opaque reflective conductive layer such as a metal is formed in a mesh shape is used as a position detection electrode. Moreover, it is providing a display apparatus provided with this.

In the present invention, a touch panel substrate and a display device having the following configurations are provided.
(1) a translucent substrate having a first surface and a second surface opposite to the first surface;
An electrode for position detection formed on one of the first surface and the second surface of the translucent substrate;
The electrode includes a reflective conductive layer that is opaque in itself and exhibits visible light reflectivity,
The reflective conductive layer includes a mesh electrode formed in a mesh shape,
Further, at least in the mesh electrode portion, on the at least one of the first surface and the second surface of the translucent substrate and in the thickness direction, the translucent substrate is more than the reflective conductive layer. Is formed on the side of the transparent substrate with respect to the reflective conductive layer, the outer contour shape when observed from a direction perpendicular to the one surface of the transparent substrate. A low-reflection layer having a portion overlapping the outer contour shape of the reflective conductive layer, and having a lower visible light reflectance than the reflective conductive layer;
A touch panel substrate.
(2) The outer peripheral portion of the position detection region where the electrode is formed, and on the one surface of the translucent substrate, has a decorative portion,
The touch panel substrate according to (1), wherein the low reflective layer is formed of the same material as the layer constituting the decorative portion.
(3) On the one surface of the translucent substrate at the outer periphery of the position detection region where the electrode is formed,
The touch panel substrate according to (1), wherein the reflective conductive layer is formed of the same material as the wiring.
(4) A display device comprising: a display panel; and the touch panel substrate according to any one of (1) to (3) disposed on an observer side of the display panel.

According to the touch panel substrate of the present invention, even if a mesh electrode in which an opaque reflective conductive layer such as metal is formed in a mesh shape is used for the position detection electrode, the mesh electrode can be made inconspicuous.
According to the display device of the present invention, the touch panel substrate included therein has the above-described effect.

Partial enlarged plan views (a) and (b) showing an electrode pattern of an embodiment of a touch panel substrate according to the present invention (a low reflection layer is also applied to an intersection), and a partially enlarged plan view schematically illustrating a mesh electrode (C), The partial expanded sectional view in the CC line in a top view (d), and the partial enlarged plan view (e) demonstrated in a crossing periphery periphery. The partial enlarged plan view explaining the lamination | stacking order of each layer with respect to the touchscreen board | substrate of FIG. Sectional drawing explaining the dimensional relationship in the surface direction of the low reflection layer with respect to a reflective conductive layer. A partially enlarged plan view (a) schematically illustrating another embodiment of a touch panel substrate according to the present invention (applying a low reflection layer to an intersecting portion, bridge reverse structure) around the intersecting portion, and a partially enlarged sectional view (b) ). Partially enlarged plan view schematically illustrating another embodiment of a touch panel substrate according to the present invention (a low reflection layer is also applied to a part of an intersection and a transparent conductive layer is laminated on a mesh electrode) around the intersection (a) And a partial enlarged sectional view (b). FIG. 5A is a partial enlarged plan view showing a pattern (a) of a low reflection layer and a pattern (b) of a transparent conductive layer in FIG. Partial enlarged plan view (a) schematically illustrating another embodiment of the touch panel substrate according to the present invention (low reflection layer excluding the conductive portion between the mesh electrode and the bridge connection) around the intersection, and a partial enlarged cross-sectional view (B). Partially enlarged plan view (a) schematically illustrating another embodiment of the touch panel substrate according to the present invention (a low reflection layer is also applied to a part of the intersection, and the low reflection layer also serves as an insulating layer) around the intersection. The partial expanded sectional view (b). The top view (a) which shows another embodiment (a low reflective layer is the same material as a decorating part; front surface protection board integrated touch panel board), the decorating part, wiring, and a mesh electrode of another embodiment of the touchscreen board | substrate by this invention The partial expanded sectional view (b) explaining 2M. A plan view (a) showing the whole of another embodiment of the touch panel substrate according to the present invention (the low reflection layer is the same material as the decorative layer constituting layer; the front protective plate integrated touch panel substrate), and the infrared transmission window portion The partial expanded sectional view (b) shown. As a modified embodiment, a partially enlarged plan view (a) and a partially enlarged sectional view (b) for schematically explaining a low reflective layer formed later than the reflective conductive layer around the intersection. Sectional drawing explaining the positional relationship in the thickness direction of the low reflective layer with respect to a reflective conductive layer as a deformation | transformation form. The partial expanded sectional view which illustrates typically the low reflection layer of double-sided formation with the electrode of double-sided formation on the translucent board | substrate as a deformation | transformation form. Sectional drawing explaining one Embodiment of the display apparatus by this invention. Sectional drawing explaining another embodiment (front surface protective plate integrated touch panel substrate) of the display apparatus by this invention. An exploded plan view (a) showing an example of a conventional display device including a touch panel using a conventional touch panel substrate, a display panel, and a front protective plate for the display device, and a partially enlarged plan view showing an example of an electrode pattern of the touch panel (B) And (c), The partial enlarged plan view (d) which shows an example of a mesh electrode, The partial enlarged plan view (e) which shows an example of an intersection part periphery. In FIG.16 (e), the mesh electrode in CC line and the partial expanded sectional view of a cross | intersection part.

    Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the drawings are conceptual diagrams, and the scale relations, aspect ratios, and the like of components may be exaggerated as appropriate for convenience of explanation.

[A] Definition of terms:
Hereinafter, definitions of main terms used in the present invention will be described here.
The “front side” is a side from which display light is emitted from the display panel 40 when the touch panel substrate 10 is used in combination with the display panel 40 in the touch panel substrate 10 or other components. It means the side of the observer to observe.
At the same time, the “front side” means the side of the operator who operates the touch panel 30 using the touch panel substrate 10 in the touch panel substrate 10 or other components.
The “back side” means the side opposite to the “front side”, and means the side on the touch panel substrate 10 or other components where the display light of the display panel 40 enters.
Any one of the “first surface” and the “second surface” is the “front side”, and which surface is the “front side” is arbitrary.
Any of the “first surface” and the “second surface” is “one surface”, and which surface is the “other surface” is arbitrary.
However, in the present specification, in a form in which the position detection electrode 2 is provided only on one side of the translucent substrate 1, the surface on which the position detection electrode 2 is necessarily provided is referred to as “one surface”. I have to. Whether “one side” is the “front side” or the “back side” depends on the usage related to the layer configuration of the touch panel substrate 10. The touch panel substrate 10 is used such that the low reflective layer 5 is on the front side with respect to the reflective conductive layer 3.
In the present specification, an embodiment in which the electrode 2 for position detection is provided on one side of the translucent substrate 1 and the “one side” is used as the “back side” will be mainly described. The form used as “is also explained.

[B] Touch panel substrate 10:
A touch panel substrate 10 according to the present invention will be described for each embodiment.

<< First Embodiment: Applying Low Reflective Layer to Intersections >>
In the present embodiment, the low reflective layer 5 is formed before the reflective conductive layer 3, and is applied to the intersection 2C in addition to the mesh electrode 2M. Further, the bridge structure of the intersecting portion 2 </ b> C is a form in which both the upper electrode 2 and the lower electrode 2 of the insulating layer 4 are formed as the reflective conductive layers 3.

FIG. 1A and FIG. 1B are partially enlarged plan views showing patterns of electrodes 2 in the touch panel substrate 10 of the present embodiment.
FIG. 1C is a schematic partially enlarged plan view of the touch panel substrate 10 of the present embodiment as viewed from the “back side” on the side where the reflective conductive layer 3, the low reflective layer 5, and the like are formed. FIG. 1C is a partially enlarged plan view corresponding to FIG. 16E described as the conventional example, and a part of the first transparent electrode element 2aE composed of the mesh electrode 2M of the electrode 2 and A part of the second transparent electrode element 2bE, a first connection part 2aC that connects the first transparent electrode elements 2aE, a second connection part 2bC that connects the second transparent electrode elements 2bE, and a first connection part 2aC It is the elements on larger scale which paid attention to crossing part 2C which is insulated mutually from the 2nd connection part 2bC, and solid-crosses by a bridge structure.
FIG. 1D is a partially enlarged sectional view taken along the line CC in FIG. 1C, and FIG. 1E is a partially enlarged plan view showing the periphery of the intersecting portion 2C in an enlarged manner.

Between the partially enlarged plan view of FIGS. 1C and 1E and the partially enlarged cross-sectional view of FIG. It is not maintained.
The same applies to the drawings in other embodiments according to the present invention.

The touch panel substrate 10 of the embodiment shown in FIG.
A translucent substrate 1 having a first surface S1 and a second surface S2 opposite to the first surface S1,
As one of the first surface S and the second surface S2 of the translucent substrate 1, it has a position detecting electrode 2 formed on the surface of the first surface S1,
The electrode 2 includes a reflective conductive layer 3 that is opaque and exhibits visible light reflectivity,
The reflective conductive layer 3 includes a mesh electrode 2M formed in a mesh shape.
Furthermore, this electrode base material 10 for touch panels is light-transmitting with respect to the reflective conductive layer 3 in the thickness direction on the surface of the first surface S1 of the translucent substrate 1 in the mesh electrode 2M. The transparent substrate 1 is formed so as to be positioned between the reflective conductive layer 3 and the translucent substrate 1 and observed from a direction perpendicular to the first surface S1 which is one surface of the translucent substrate 1. The outer contour shape at this time includes the outer contour shape of the reflective conductive layer 3 inside, and has a low reflective layer 5 having a lower visible light reflectance than the reflective conductive layer 3.

  In the present embodiment, the first surface S1 which is one surface of the translucent substrate 1 is a surface above the drawing in the cross-sectional view of FIG. Therefore, in this cross-sectional view, the touch panel substrate 10 is assumed to be used toward the viewer V of the display panel who is also the operator of the touch panel, with the second surface S2 on the lower side of the drawing as the front side. .

In the present embodiment, the position detection electrode 2 is an example of a projected capacitive pattern. The pattern of the electrode 2 includes a plurality of first electrodes 2a extending in the X-axis direction as the first direction shown in FIG. 1A and a plurality of first electrodes extending in the Y direction as the second direction shown in FIG. The two electrodes 2b are formed so as to cross each other while being insulated from each other.
In FIG. 1, in the XY orthogonal coordinate system, the X direction that is the first direction is the horizontal direction in the drawing, and the Y direction that is the second direction is the vertical direction in the drawing.

  As shown in FIG. 1A, one first electrode 2a connects a plurality of rhombus-shaped first transparent electrode elements 2aE and the first transparent electrode elements 2aE adjacent to each other to form a first transparent electrode element 2aE. The first connection portion 2aC has a smaller area than the first connection portion 2aC and an extraction portion (not shown) that extends to the outer periphery of the position detection region and electrically connects the first transparent electrode element 2aE to the wiring 7. The Similarly, as shown in FIG. 1 (b), one second electrode 2b also connects a plurality of rhombus-shaped second transparent electrode elements 2bE and the second transparent electrode elements 2bE adjacent to each other to form a first transparent electrode. The second connecting portion 2bC has a smaller area than the electrode element 2aE, and an unillustrated extraction portion that electrically connects the second transparent electrode element 2bE to the wiring 7 (see FIG. 9 described later).

  FIG. 1C shows an intersecting portion 2C where the first connecting portion 2aC and the second connecting portion 2bC are insulated from each other, and the surrounding first transparent electrode element 2aE and second transparent electrode element 2bE. ing. In FIG. 1 (d), the rhombus-shaped first transparent electrode element 2aE is shown about half of the intersecting portion 2C side. Similarly, the rhombus-shaped second transparent electrode element 2bE is also located on the intersecting portion 2C side. About half are shown.

  In the present embodiment, all of the first transparent electrode element 2aE, the first connection portion 2aC, and the extraction portion that constitute the first electrode 2a are constituted by the reflective conductive layer 3, and the second electrode 2b is similarly formed. The second transparent electrode element 2bE, the second connection portion 2bC, and the take-out portion that are configured are all configured from the reflective conductive layer 3. Among these, the reflective conductive layer 3 is the mesh electrode 2M in the first transparent electrode element 2aE and the second transparent electrode element 2bE.

[Mesh electrode 2M]
The mesh electrode 2M is an electrode in which the reflective conductive layer 3 is formed in a mesh shape.
As a result, the mesh electrode 2M appears to be transparent, in other words, when the mesh electrode 2M is viewed as a whole.
There is no restriction | limiting in particular as a shape of the mesh pattern of the mesh electrode 2M, A well-known pattern can be employ | adopted suitably. For example, a pattern shape in which a large number of linear openings are arranged in two directions, such as a square lattice shape, can be employed. In addition to the square, the shape of the opening may be a polygon such as a triangle, a quadrangle, a pentagon, or a hexagon, and the shape of the opening may be a shape including a curve other than a shape consisting of only a straight line like a polygon.
The mesh electrode 2M is translucent at the opening and is apparently transparent, in other words, a pseudo transparent electrode.
When the area of the applied touch panel is increased, the transparent electrode is required to have a smaller area resistivity. In the case of a transparent conductive thin film such as ITO, the mesh electrode 2M can solve the problem that the transparency is lowered when the sheet resistivity is lowered.
The line width of the mesh electrode 2M and the size of the opening may be set appropriately according to the required sheet resistivity and transparency. For example, the line width can be 5 to 30 μm, preferably 5 to 20 μm, and the size of the opening can be 300 to 1500 μm. When the line width exceeds the range, mesh lines are likely to be noticeable, and when the line width is less than the range, the sheet resistivity may be too large. If the size of the opening exceeds the above range, the sheet resistivity may be too large, and if it is less than the above range, the transparency may be too low.

  The mesh electrode 2M is not essential for the first connection portion 2aC and the second connection portion 2bC, and the extraction portion of the first electrode 2a and the extraction portion of the second electrode 2b. These portions are narrower than the first transparent electrode element 2aE and the second transparent electrode element 2bE. For example, as long as the line width is the same as the line width of the mesh electrode 2M, it is not necessary to use a mesh. It is.

[Intersection 2C and bridge structure]
In the present embodiment, the first electrode 2a and the second electrode 2b extending in different directions are formed, and the first transparent electrode element 2aE and the second transparent electrode element 2bE are formed on the same surface. In relation, the intersection 2C where the first electrode 2a and the second electrode 2b intersect has a bridge structure that is insulated from each other with the insulating layer 4 interposed between the layers. The intersection 2C is the pattern shown in FIGS. 1A and 1B because the electrode 2 of this embodiment is described with reference to FIGS. 1A and 1B. For example, the electrode 2 corresponding to the first connection portion 2aC and the second connection portion 2bC is applicable.
In this embodiment, the reflective conductive layer 3 is used also in the intersection 2C, and the low reflection layer 5 is applied to the reflective conductive layer 3 in the intersection 2C to The part 2C also makes the reflective conductive layer 3 inconspicuous.

[Bridge connection 2B]
In the present invention, in the intersecting portion 2C having a bridge structure, a portion that is not formed as a continuous layer with a portion other than the intersecting portion 2C but is connected to electrode portions that are formed apart from each other is referred to as a “bridge connection 2B”. I will call it.
The bridge connection 2B has a configuration in which a bridge structure has a structure straddling the insulating layer 4 in the thickness direction and a configuration in which the insulating layer 4 is passed through. Above the insulating layer 4 means a position farther from the translucent substrate 1 than the insulating layer 4, and below the insulating layer 4 means a position between the insulating layer 4 and the translucent substrate 1.
In the present embodiment, the bridge connection 2 </ b> B is a form example straddling the insulating layer 4.

  In the present embodiment, in the bridge structure of the intersection 2C, both the lower bridge portion passing under the insulating layer 4 and the upper bridge portion passing above the insulating layer 4 are both formed using the reflective conductive layer 3. is there. However, for the reflective conductive layer 3 on the upper side of the bridge passing over the insulating layer 4, which is not formed as a continuous layer with the portion other than the intersection 2C, the reflective conductive material constituting the mesh electrode 2M is used. The reflective layer 3 may be the same material as the reflective layer 3 or may not be the same material. In any case, in the present embodiment, since the bridge connection 2B is formed of the reflective conductive layer 3, the low reflection layer 5 is also applied to the bridge connection 2B.

  The dimensions of the external shape of the bridge connection 2B are, for example, a rectangle having a width of 5 to 20 μm and a length of 20 to 500 μm in the present embodiment shown in FIG. The width is a dimension in the first direction (X direction in the drawing), and the length is a dimension in the second direction (Y direction in the drawing).

[Shape relationship between the reflective conductive layer 3 and the low reflective layer 5 in the surface direction]
In the present embodiment, the pattern shape of the low reflection layer 5 includes the first electrode 2a including the first transparent electrode element 2aE and the second transparent electrode element 2bE when the line width is regarded as a shape having zero thickness. The second electrode 2b has the same pattern shape as that observed from the direction perpendicular to the first surface S1, which is one surface of the translucent substrate 1, but the line width is low in all portions. The reflective layer 5 is thicker than the reflective conductive layer 3.
For this reason, the outer contour shape of the low reflection layer 5 is thicker in all the portions than the outer contour shape in which the first electrode 2a and the second electrode 2b are overlapped, and the first in all the portions. The outer contour shapes of the electrode 2a and the second electrode 2b are included inside.

  In the present invention, the low reflection layer 5 has an outer contour shape when observed from a direction perpendicular to the first surface S2 which is the one surface of the translucent substrate 1, and the outer contour of the reflective conductive layer. It suffices to have a portion that overlaps the shape, and it may be the same and completely overlapped. For example, the outer contour shape of the partially reflective conductive layer 3 may protrude from the outer contour shape of the low reflective layer 5 as in a portion to be a conductive portion 2D described later.

3 is a diagram for explaining the dimensional relationship of the low reflective layer 5 with respect to the reflective conductive layer 3. This figure is a cross-sectional view in a cross section orthogonal to the extending direction with respect to the line-like reflective conductive layer 3 extending in a certain arbitrary direction. In this cross-sectional view, the low reflective layer 5 protrudes on both sides of the reflective conductive layer 3. In the same figure, it is a case where it protrudes substantially equally on both sides.
The amount of protrusion dW on one side is 0.5 μm or more in all parts of the reflective conductive layer 3 in order to give the outer contour shape of the low reflective layer 5 a slight margin in alignment accuracy, preferably The thickness is preferably 1 μm or more. However, even if it protrudes, the protrusion amount dW is preferably 100 μm or less, preferably 50 μm or less, more preferably 10 μm or less. This is because if the protrusion is excessive, the transmittance is lowered, and the display of the display panel viewed through the touch panel is blocked at the low reflection layer 5 portion, which may adversely affect the display quality.
On the contrary, if the protrusion amount dW is too small than the above value, the reflective conductive layer 3 that cannot be concealed by the low reflective layer 5 may be visually recognized when the alignment accuracy is poor and the position is shifted. Because.

  The portion where the low reflective layer 5 is applied to the reflective conductive layer 3 is reflective at least in the position detection region Ap (see FIG. 9 described later) from the viewpoint of making the reflective conductive layer 3 inconspicuous. It is preferable to apply to all parts of the conductive layer 3. In this embodiment, this is the case. However, in the present invention, it is not necessary to apply the low reflection layer 5 to all portions of the reflective conductive layer 3. What is necessary is just to apply to the part of the reflective conductive layer 3 which comprises the mesh electrode 2M at least. In this case, it is preferable to apply to all the portions of the reflective conductive layer 3 constituting the mesh electrode 2M, but some portions may not be applied as in the embodiment described later. That is, in the present invention, the reflective conductive layer 3 does not have to be applied to all of the mesh electrode 2M in the mesh electrode 2M. This includes, for example, a structure left as a portion of the conductive portion 2D exposed from the low reflection layer 5 for connection with the bridge connection 2B in consideration of the layer configuration and the manufacturing process. This configuration is shown in a fourth embodiment described later.

〔Production method〕
FIG. 2 is a partially enlarged plan view for explaining the stacking order of each layer as a manufacturing method for the touch panel substrate 10 of the present embodiment shown in FIG.
As shown in FIG. 2A, first, a low reflection layer 5 is formed on a light-transmitting substrate 1, and then, as shown in FIG. The conductive conductive layer 3 is formed. Next, as shown in FIG. 2C, the insulating layer 4 is formed at the intersection 2C, and then, as shown in FIG. 2D, the bridge connection 2B is formed across the insulating layer 4. Thus, the touch panel substrate 10 of the present embodiment is obtained.

[Effect in this embodiment]
With the configuration as described above, in the touch panel substrate 10 according to the present embodiment, the reflective conductive layer 3 used for the electrode 2 is configured to be hidden by the low reflective layer 5. 3 can be made inconspicuous.
In the present embodiment, the reflective conductive layer 3 is used not only for the mesh electrode 2M but also for the non-mesh intersection 2C, and the low reflection layer 5 also intersects with the mesh electrode 2M. The reflective conductive layer 3 can be made inconspicuous not only at the mesh electrode 2M but also at the intersection 2C.

<Material and forming method>
Hereinafter, materials and forming methods will be described for each layer used in the present embodiment.

[Translucent substrate 1]
The translucent substrate 1 can be made of a known material, typically a glass plate,
Resin materials such as polyester resin, acrylic resin, and polycarbonate resin may be used.

[Electrode 2]
The electrode 2 for position detection includes a reflective conductive layer 3 which is opaque and has visible light reflectivity, and the reflective conductive layer 3 includes a mesh electrode 2M formed in a mesh shape.

[Reflective conductive layer 3]
For the reflective conductive layer 3, known materials and formation methods can be employed. For example, the reflective conductive layer 3 can be made of a metal (including alloys thereof) such as silver, gold, copper, chromium, platinum, aluminum, palladium, and molybdenum other than a transparent conductive material such as ITO. . The reflective conductive layer 3 can be formed into a pattern by a photolithography method after being formed as a metal layer of a silver alloy (also referred to as APC) made of silver, palladium and copper, for example, by a sputtering method.
As the reflective conductive layer 3, a conductive layer (referred to as MAM) having a three-layer structure of molybdenum (Mo) / aluminum (Al) / molybdenum (Mo) can also be used.
In the present embodiment, the reflective conductive layer 3 is formed as a metal layer by a silver alloy (also referred to as APC) made of silver, palladium, and copper.
There is no restriction | limiting in particular as a formation method of the reflective conductive layer 3, You may form by printing methods, such as a screen printing method and an inkjet printing method, besides the photolithography method.

  The reflectivity of the reflective conductive layer 3 indicates that the reflectance is 50% or more on average in the visible light region (380 to 780 nm). For example, in general, silver falls to 90% or more, aluminum falls to 80% or more, and gold falls to nearly 50% in the short wavelength region, but on average shows 50% or more.

  The reflective conductive layer 3 is not limited to a metal material, and may be, for example, a conductive polymer as long as it exhibits reflectivity.

  The pattern forming method for forming the reflective conductive layer 3 in a mesh shape to form the mesh electrode 2M is not particularly limited, and is formed by a printing method such as a screen printing method or an ink jet printing method in addition to the photolithography method. You may do it.

[Insulating layer 4]
The insulating layer 4 is an electrically insulating layer, and known materials and forming methods can be employed.
The insulating layer 4 can be patterned by, for example, a photolithography method using an ultraviolet curable acrylic resin as a resin layer.
Note that in this specification, “insulation” and “connect” are both used in terms of electrical meaning.
The insulating layer 4 may be either transparent or opaque, but is preferably transparent. This is because the transparency of the touch panel substrate 10 is not lowered. In the present embodiment, the insulating layer 4 is formed as a transparent layer.

[Low reflective layer 5]
The low reflective layer 5 exhibits a visible light reflectance that is smaller than the visible light reflectance of the reflective conductive layer 3. Here, the visible light reflectance can be an average value of the light reflectance in the visible light region (380 to 780 nm). Alternatively, the Y value in the Yxy color system using the standard light source C by the International Lighting Commission CIE can be used as the luminous reflectance closer to the human eye sensitivity. In terms of this Y value, the low reflective layer 5 preferably exhibits low reflectivity with a Y value of 10% or less.
Of course, the visible light reflectivity is measured from the front side where the surface far from the reflective conductive layer 3 is observed among the two layer surfaces of the low reflective layer 5 (the present embodiment). In this case, the reflectivity at the interface between the low reflective layer 5 and the translucent substrate 1 corresponds). Therefore, the reflection on the surface of the translucent substrate 1 is excluded from the front side.
The low reflection layer 5 also exhibits light shielding (opacity) at the same time. This is because the reflected light from the reflective conductive layer 3 can be reduced. Therefore, the low reflective layer 5 can also be referred to as a “hidden layer” that exhibits low reflectivity and light shielding properties and conceals the reflective conductive layer 3.
From the viewpoint of making the reflective conductive layer 3 inconspicuous, the light shielding property is 10% or less (1 or more at the optical density OD) in terms of transmittance, more preferably 1% or less (optical). Density OD2.0 or more), and more preferably 0.01% or less (optical density OD4.0 or more) in terms of transmittance.

The low reflection layer 5 can be patterned by a photolithography method as a layer exhibiting a dark color such as black containing a black pigment such as carbon black in a resin binder made of a cured curable resin. As the curable resin, a photosensitive resin such as an ultraviolet curable acrylic resin can be used. In the present embodiment, the pattern is formed by a photolithography method using an ultraviolet curable acrylic resin containing the low reflection layer 5 and carbon black.
In order to make the low reflection layer 5 dark, such as black, a plurality of chromatic pigments such as red, yellow, blue, and green other than carbon black may be used to form a black color. For example, black may be formed using three color pigments of red, yellow, and blue. The dark color means a color other than black, such as dark blue or dark green, which has a low lightness and the Y is 10% or less.
Therefore, as the color pigment used for the low reflection layer 5, one or more kinds such as a black pigment, a white pigment, a red pigment, a yellow pigment, a blue pigment, a green pigment, and a purple pigment can be used.
The low reflective layer 5 may be formed of an inorganic material that itself exhibits a dark color, such as chromium oxynitride.

  In the present invention, the low reflection layer 5 may basically be either insulating or conductive. However, since there is a configuration that requires insulation, the insulating low reflective layer 5 is used at this time. However, the insulating low-reflection layer 5 has an advantage that it can be used even in a configuration that may be conductive unless the conductivity is positively utilized.

In the present embodiment, the low reflection layer 5 is provided as an insulating layer. In the present embodiment, the low reflection layer 5 needs to be provided as an insulating layer. The reason for this is that the pattern of the low reflection layer 5 should be provided so as to be insulated from each other as shown in FIG. 2A, and the portion of the mesh electrode 2M relative to the first electrode 2a in the X direction and the second in the Y direction. In addition to the portion of the mesh electrode 2M with respect to the electrode 2b, the crossing portion 2C is also formed as a continuous layer. For this reason, when the low reflection layer 5 is conductive, the first electrode 2a and the second electrode 2b are electrically connected by the low reflection layer 5 at the intersection 2C.
On the other hand, for example, in the third embodiment exemplified in FIGS. 5 to 6 described later, a layer exhibiting conductivity can be used as the low reflection layer 5.

<< Second Embodiment: Applying Low Reflective Layer to Crossing, Bridge Reverse Structure >>
In the present embodiment shown in FIG. 4, the vertical relationship of the bridge connection 2 </ b> B of the bridge structure at the intersection 5 </ b> C is an inverse structure with respect to the first embodiment shown in FIG. 1.
FIG. 4A is a partially enlarged plan view schematically illustrating the touch panel substrate 10 according to the present embodiment around the intersection, and FIG. 4B is a partially enlarged cross section taken along the line CC in the plan view. FIG.

This embodiment is the same as the first embodiment shown in FIG. 1 except for the following points. Therefore, the description of the same part is omitted.
a) The bridge structure at the intersection 2C has an inverted structure above and below the insulating layer 4. As a result, the bridge connection 2B is formed prior to the insulating layer 4. However, the bridge connection 2 </ b> B is formed after the low reflection layer 5.

〔Production method〕
The touch panel substrate 10 as described above can be manufactured as follows.
First, the low reflection layer 5 is formed on the translucent substrate 1. Next, as a part of the electrode 2, the bridge connection 2 </ b> B at the intersection 2 </ b> C is formed with the reflective conductive layer 3. Next, the insulating layer 4 is formed at the intersection 2C. Next, the reflective conductive layer 3 to be used as the electrode 2 including the mesh electrode 2M is formed on the low reflective layer 5, and the touch panel substrate 10 of this embodiment is obtained.

[Effect in this embodiment]
Even in the configuration as described above, the touch panel substrate 10 according to the present embodiment has a structure in which the reflective conductive layer 3 used for the electrode 2 is hidden by the low reflective layer 5. 3 can be made inconspicuous.
In the present embodiment, the reflective conductive layer 3 is used not only for the mesh electrode 2M but also for the non-mesh intersection 2C, and the low reflection layer 5 also intersects with the mesh electrode 2M. The reflective conductive layer 3 can be made inconspicuous not only at the mesh electrode 2M but also at the intersection 2C.

<< Third embodiment: Applying a low reflective layer to a part of the intersection, laminating a transparent conductive layer on the mesh electrode >>
The present embodiment shown in FIG. 5 uses the transparent conductive layer 6 for the bridge connection 2B at the intersection 5C, so that the low reflection layer 5 for the bridge connection 2B is not formed. As a result, the first electrode 2a and the second electrode 2b It is a form in which independent low reflective layers 5 that are not continuous layers are applied to each.
FIG. 5A is a partially enlarged plan view schematically illustrating the touch panel substrate 10 according to the present embodiment around the intersection, and FIG. 5B is a partially enlarged cross section taken along the line CC in the plan view. FIG.
6A is a partially enlarged plan view showing only the reflective conductive layer 3 in FIG. 5A, and FIG. 6B is only the transparent conductive layer 6 in FIG. 5A. FIG.

This embodiment is the same as the first embodiment shown in FIG. 1 except for the following points. Therefore, the description of the same part is omitted.
a) The bridge connection 2B at the intersection 2C is formed by the transparent conductive layer 6.
b) The same material as that of the transparent conductive layer 6 and a solid pattern including the mesh opening of the mesh electrode 2M in the portion of the mesh electrode 2M is formed in contact with the reflective conductive layer 3 at the same time.
c) For the transparent conductive layer 6 forming the bridge connection 2B of the intersection 2C, the low reflective layer 5 is not applied as a non-formation, and the reflective conductive layer 3 is applied to one electrode 2 of the intersection 2C. The point where is applied.

[Reflective conductive layer 3]
In the present invention, part or all of the electrodes 2 at the intersection 2C may not be the reflective conductive layer 3. In the present embodiment, the reflective conductive layer 3 is used for one electrode 2 that constitutes the intersection 2C and extends in the X direction, and the other electrode 2 that constitutes the intersection 2C and extends in the Y direction includes A transparent conductive layer 6 is used.

[Low reflective layer 5]
In the present invention, the low reflective layer 5 is applied to the reflective conductive layer 3 of at least the mesh electrode 2 </ b> M of the reflective conductive layer 3.
In the present embodiment, as shown in FIG. 6A, the low reflection layers 5 for the first electrode 2a and the second electrode 2b are independent layers that are discontinuous with each other. The low reflection layer 5 formed in contact with the first electrode 2a and the second electrode 2b provided so as to be insulated from each other is thus formed as an independent layer with respect to the first electrode 2a and the second electrode 2b. In this case, a conductive layer can be used for the low reflective layer 5.

  The low reflective layer 5 that can be a conductive layer is formed in contact with the reflective conductive layer 3, so that the area resistivity of the mesh electrode 2M and the like, compared to the conductivity of the reflective conductive layer 3 alone, It is possible to increase the conductivity and reduce the sheet resistivity. As described above, when the conductivity is also improved, the effect can be increased as the thickness of the low reflection layer 5 is increased.

As the low reflection layer 5 that can be a conductive layer, for example, a chromium oxynitride film can be used. The chromium oxynitride film can be used, for example, as a black matrix of a color filter. Specifically, from the light-transmitting substrate 1 side, 1) the chromium oxynitride film is made of chromium oxide with an atomic percentage of chromium of 30 to 50%. A first antireflective film, 2) a second antireflective film made of chromium nitride having an atomic percentage of chromium larger than that of the first antireflective film and 45 to 60%, and 3) a chromium film having 100% chromium and a thickness of 80 nm. It is a chromium oxynitride film having a layer structure.
With each antireflection film, the difference in refractive index between the translucent substrate 1 and the chromium film can be changed stepwise, and the visible light reflectance can be reduced. Simply, the chromium film alone has a high visible light reflectance, but can still be used as the black low-reflection layer 5. Since the chromium film is conductive, it can be used when the surface on the chromium film side may be conductive. Note that if the layer structure is formed by laminating one or more of the first antireflection layer and the second antireflection layer on the chromium film side surface, it can be used as an insulating layer.
In addition, each antireflection film has one or more of oxygen, nitrogen, and carbon, such as oxynitride and carbide, in addition to oxide and nitride, as the atomic percentage of chromium increases as the distance from the translucent substrate 1 increases. A compound with a combination of

[Transparent conductive layer 6]
As the transparent conductive layer 6, a known material and a forming method can be employed. For example, ITO (Indium Tin Oxide), IZO (registered trademark; Idemitsu Kosan Co., Ltd.) (Indium Zinc Oxide), AZO (Aluminum Zinc Oxide), IGZO (Indium Gallium) A transparent conductor thin film such as Zinc Oxide or indium gallium zinc oxide) can be used.

In the present embodiment, as shown in FIG. 6B, the transparent conductive layer 6 of the bridge connection 2B is formed in contact with the reflective conductive layer 3 as a continuous layer up to the entire area of the mesh electrode 2M. On the other hand, a transparent conductive layer made of the same material as an independent layer from the transparent conductive layer 6 is simultaneously formed in contact with the reflective conductive layer 3 in the entire area of the other mesh electrode 2M not connected by the bridge connection 2B. ing.
In the present invention, the transparent conductive layer 6 may be in contact with the reflective conductive layer 3 and may also be formed in a mesh shape. In this case as well, the mesh electrode 2M portion (specifically, in this embodiment, the first The area resistivity of the first transparent electrode element 2aE and the second transparent electrode element 2bE) can be made smaller than that of the mesh electrode 2M of the reflective conductive layer 3 alone. However, as in the present embodiment, the transparent conductive layer 6 is positively utilized in the non-formation portion of the reflective conductive layer 3 at the mesh electrode 2M portion by actively utilizing the transparency of the transparent conductive layer 6. By forming the entire surface including a certain opening, that is, by forming it with a solid pattern, the area resistivity of the mesh electrode 2M can be further reduced.
In addition, since the transparent conductive layer 6 is formed on a surface that can be formed simultaneously with the transparent conductive layer 6 of the bridge connection 2B, it can be formed simultaneously with the same material, so that it can be formed without an increase in manufacturing cost.

〔Production method〕
The touch panel substrate 10 as described above can be manufactured as follows.
First, the low reflection layer 5 is formed on the translucent substrate 1. Next, the reflective conductive layer 3 is formed as a part of the electrode 2 leaving the bridge connection 2B. Next, the insulating layer 4 is formed at the intersection 2C. Next, the bridge connection 2B of the intersection 2C is formed by the transparent conductive layer 6, and at the same time, the same transparent conductive layer 6 is formed on the entire surface of the mesh electrode 2M, thereby obtaining the touch panel substrate 10 of the present embodiment. It is done.

[Effect in this embodiment]
Even in the configuration described above, the touch panel substrate 10 according to the present embodiment has a structure in which the reflective conductive layer 3 used for the electrode 2 is hidden by the low reflective layer 5. 3 can be made inconspicuous.
In this embodiment, in addition to the mesh electrode 2M, the reflective conductive layer 3 is formed on a part of the intersecting portion 2C that is not mesh-shaped, specifically on an electrode portion extending in the X direction in FIG. The low reflection layer 5 is also applied to the portion of the intersection 2C in addition to the mesh electrode 2M, and the reflective conductive layer is applied not only to the mesh electrode 2M but also to the intersection 2C. 3 can be made inconspicuous.
Furthermore, since the bridge connection 2B extending in the Y direction at the intersection 2C is formed of the transparent conductive layer 6, the low reflection layer 5 is not formed for this portion because it is not necessary. In this respect, a conductive layer can be used for the low reflection layer 5.
Further, since the transparent conductive layer 6 at the intersection 2C is formed in a solid shape including both the mesh electrode 2M and the mesh opening, the area resistivity of the mesh electrode 2M can be lowered. Accordingly, the line width of the mesh electrode 2M can be narrowed to increase transparency.
In addition, since the reflective conductive layer 3 is covered with the transparent conductive layer 6, the reflective conductive layer 3 functions as a protective layer against being altered by being exposed to the atmosphere or being damaged by an external force. You can also As a result, the transparent conductive layer 6 can also serve as an overcoat layer.

<< 4th Embodiment: The low reflection layer which excluded the conduction | electrical_connection part of a mesh electrode and bridge | bridging connection >>
In the present embodiment shown in FIG. 7, with respect to the bridge connection 2B at the intersection 5C, as a result of forming the bridge connection 2B before the low reflection layer 5, in order to make the bridge connection 2B and the mesh electrode 2M conductive, The portion of the reflective conductive layer 3 that is the conductive portion 2D to be connected is in a form excluding the formation of the low reflective layer 5. In other words, in the portion of the mesh electrode 2M, a part of the outer contour shape of the reflective conductive layer 3 is present outside the outer contour shape of the low reflective layer 5, so that the outer contour shape of the low reflective layer 5 is present. Is a form that does not include the outer contour shape of the reflective conductive layer 3 inside.
Further, in the present embodiment, as a result of using the transparent conductive layer 6 for the bridge connection 2B at the intersection 5C, the low reflection layer 5 for the bridge connection 2B is not formed. As a result, each of the first electrode 2a and the second electrode 2b In this embodiment, the low reflective layer 5 is formed independently.
FIG. 7A is a partially enlarged plan view schematically illustrating the touch panel substrate 10 according to the present embodiment around the intersection, and FIG. 7B is a partially enlarged cross section taken along the line CC in the plan view. FIG.

This embodiment is the same as the first embodiment shown in FIG. 1 except for the following points. Therefore, the description of the same part is omitted.
a) For the reflective conductive layer 3 of the mesh electrode 2M connected by the bridge connection 2B, the conductive portion 2D for the connection is excluded and the low reflective layer 5 is formed.
b) The bridge connection 2B at the intersection 2C is formed by the transparent conductive layer 6.
c) The low-reflection layer 5 is not applied to the transparent conductive layer 6 forming the bridge connection 2B of the intersection 2C, and the reflective conductive layer 3 is not applied to one electrode 2 of the intersection 2C. The point where is applied.

[Low reflective layer 5]
As in the present embodiment, in the portion of the mesh electrode 2M, with respect to the reflective conductive layer 3, the low-reflection layer 5 includes the outer contour shape of the reflective conductive layer 3 on the inner side. There may be missing parts. In the portion where the outer contour shape of the reflective conductive layer 3 protrudes from the outer contour shape of the low reflective layer 5, the reflective conductive layer 3 can be visually recognized. However, as in this embodiment, the mesh electrode If it is small with respect to the total area of 2M, the reflective conductive layer 3 is not so conspicuous.

  In the present embodiment, the low reflection layer 5 is an independent layer independent of the first electrode 2a and the second electrode 2b, but a conductive layer cannot be applied to the low reflection layer 5. The reason is that the bridge structure is different from the third embodiment described above, and as can be seen from FIG. 7B, the low reflection layer 5 is formed on the insulating layer 4 together with the portion formed in contact with the bridge connection 2B. It is because it has the part formed in contact also with the reflective conductive layer 3 formed ranging over.

[Transparent conductive layer 6]
The transparent conductive layer 6 can employ known materials and forming methods described in the section of the transparent conductive layer 6 of the third embodiment. Therefore, further explanation is omitted.
However, in the present invention, in the form of the shape relationship in the surface direction between the reflective conductive layer 3 and the low reflective layer 5, the bridge connection 2 </ b> B includes, for example, the reflective conductive layer in addition to the transparent conductive layer 6. A conductive layer such as the conductive layer 3 may be used. When the bridge connection 2B is formed of the reflective conductive layer 3, the low reflection layer 5 is not applied to the bridge connection 2B, but the bridge connection 2B is in any case a mesh electrode 2M, etc. This is because the total area is small, so that the effect of providing the low reflection layer 5 is obtained as a whole.

〔Production method〕
The touch panel substrate 10 as described above can be manufactured as follows.
First, a bridge connection 2 </ b> B of the intersection 2 </ b> C is formed with a transparent conductive layer 6 as a part of the electrode 2 on the translucent substrate 1. Next, the low reflection layer 5 is formed by excluding the bridge connection 2B and the conduction portion 2D. Next, the insulating layer 4 is formed at the intersection 2C. Next, the reflective conductive layer 3 is formed as a part of the electrode 2 while leaving the bridge connection 2B, and the touch panel substrate 10 of the present embodiment is obtained.

[Effect in this embodiment]
Even in the configuration described above, the touch panel substrate 10 according to the present embodiment has a structure in which the reflective conductive layer 3 used for the electrode 2 is hidden by the low reflective layer 5. 3 can be made inconspicuous.
In this embodiment, in addition to the mesh electrode 2M, the reflective conductive layer 3 is formed on a part of the intersecting portion 2C that is not mesh-like, specifically on an electrode portion extending in the X direction in FIG. The low reflection layer 5 is also applied to the portion of the intersecting portion 2C in addition to the portion of the mesh electrode 2M excluding the conductive portion 2D. In addition, the reflective conductive layer 3 can be made inconspicuous even at the intersection 2C.
Furthermore, since the bridge connection 2B extending in the Y direction at the intersection 2C is formed of the transparent conductive layer 6, the low reflection layer 5 can be omitted for this portion.

<< Fifth embodiment: Low reflection layer is also applied to a part of the intersection, and the low reflection layer also serves as an insulating layer >>
In the present embodiment shown in FIG. 8, the insulating layer 4 at the intersection 2 </ b> C is also used as the low reflection layer 5. At the same time, as in the fourth embodiment, as a result of forming the bridge connection 2B before the low reflection layer 5 for the bridge connection 2B at the intersection 5C, the bridge connection 2B and the mesh electrode 2M are made conductive. For this reason, the portion of the reflective conductive layer 3 that is the conductive portion 2D that connects the two is a form in which the formation of the low reflective layer 5 is excluded. In other words, in the portion of the mesh electrode 2M, a part of the outer contour shape of the reflective conductive layer 3 is present outside the outer contour shape of the low reflective layer 5, so that the outer contour shape of the low reflective layer 5 is present. Is a form that does not include the outer contour shape of the reflective conductive layer 3 inside.
Further, in the present embodiment, as a result of using the transparent conductive layer 6 for the bridge connection 2B at the intersection 5C, the low reflection layer 5 for the bridge connection 2B is not formed. As a result, each of the first electrode 2a and the second electrode 2b In this embodiment, the low reflective layer 5 is formed independently.
FIG. 8A is a partially enlarged plan view schematically illustrating the touch panel substrate 10 according to the present embodiment around the intersection, and FIG. 8B is a partially enlarged cross section taken along the line CC in the plan view. FIG.

This embodiment is the same as the first embodiment shown in FIG. 1 except for the following points. The following b), c) and d) are the same as those in the fourth embodiment.
Therefore, the description of the same part as the first embodiment or the fourth embodiment is omitted.
a) The low reflection layer 5 is also used as the insulating layer 4.
b) For the reflective conductive layer 3 of the mesh electrode 2M connected by the bridge connection 2B, the conductive portion 2D for the connection is excluded and the low reflective layer 5 is formed.
c) The bridge connection 2B at the intersection 2C is formed by a transparent conductive layer.
d) The low-reflection layer 5 is not applied to the transparent conductive layer 6 forming the bridge connection 2B of the intersection 2C, and the reflective conductive layer 3 is not applied to one electrode 2 of the intersection 2C. The point where is applied.

[Low reflective layer 5 also used as insulating layer 4]
Since the low reflective layer 5 also serves as the insulating layer 4, the low reflective layer 5 may be an insulating material among those described in the above embodiments.

〔Production method〕
The touch panel substrate 10 as described above can be manufactured as follows.
First, a bridge connection 2 </ b> B of the intersection 2 </ b> C is formed with a transparent conductive layer 6 as a part of the electrode 2 on the translucent substrate 1. Next, the low reflection layer 5 is formed by excluding the bridge connection 2B and the conduction portion 2D. The low reflection layer 5 also serves as the insulating layer 4 at the intersection 2C. Next, the reflective conductive layer 3 is formed as a part of the electrode 2 while leaving the bridge connection 2B, and the touch panel substrate 10 of the present embodiment is obtained.

[Effect in this embodiment]
Even in the configuration described above, the touch panel substrate 10 according to the present embodiment has a structure in which the reflective conductive layer 3 used for the electrode 2 is hidden by the low reflective layer 5. 3 can be made inconspicuous.
In the present embodiment, the reflective conductive layer 3 is not only a part of the mesh electrode 2M but also a part of the intersecting part 2C that is not mesh-shaped, specifically, an electrode part extending in the X direction in FIG. The low reflection layer 5 is also applied to the portion of the intersecting portion 2C in addition to the portion of the mesh electrode 2M excluding the conductive portion 2D. In addition, the reflective conductive layer 3 can be made inconspicuous even at the intersection 2C.
Furthermore, since the low reflective layer 5 also serves as the insulating layer 4 at the intersection 2C, the step of forming the insulating layer 4 alone can be omitted.
Furthermore, since the bridge connection 2B extending in the Y direction at the intersection 2C is formed of the transparent conductive layer 6, the low reflection layer 5 can be omitted for this portion.

<< Sixth embodiment: Low reflection layer is also used as a decorative layer constituent layer; touch panel substrate with integrated front protective plate >>
In the present embodiment shown in FIG. 9, the touch panel substrate 10 is also used as a front protective plate for a display device. The touch panel substrate 10 has a decorative portion 8 on the outer periphery of the position detection region Ap, and the low reflection layer 5 It is the form simultaneously formed with the same material as the constituent layer of the decoration part 8.
In the present embodiment, as a modification of the third embodiment described with reference to FIG. 5, an example in which the low reflection layer 5 also serves as the decoration portion 8 will be described. Therefore, please refer also to FIG. Here, since what has been described in the third embodiment is the same, a description thereof will be omitted, and different points will be described.
Fig.9 (a) is the top view which looked at the whole touch panel board | substrate 10 by this embodiment from the back side, FIG.9 (b) is a decorating part in CC line in Fig.9 (a). FIG. 5 is a partially enlarged cross-sectional view schematically illustrating a wiring and a mesh electrode 2M.

This embodiment is the same as the third embodiment shown in FIG. 5 except for the following points. Therefore, the description of the same part is omitted.
a) The low reflective layer 5 is simultaneously formed of the same material as the light shielding layer 8a which is one of the constituent layers of the decorative portion 8.
b) The point that the reflective conductive layer 3 is simultaneously formed with the same material as the wiring 7 formed in the decorative portion 8.
c) The insulating layer 4 is simultaneously formed with the same material as the overcoat layer 9 which is one of the constituent layers of the decorative portion 8.

[Combination of addition of decoration part 8 and front protective plate for display device]
As exemplified in the present embodiment, in the present invention, the touch panel substrate 10 can have a decorative portion 8 on the outer peripheral portion of the position detection region Ap.
The decoration unit 8 includes a touch panel including the touch panel substrate 10, a display device using the touch panel, the wiring 7 and the control circuit positioned on the outer periphery of the position detection area Ap, and the observer V or the touch panel of the display device. It is a portion that is hidden from the operator so as not to be visible so that the appearance is not impaired and an arbitrary design is expressed.
The touch panel substrate 10 has the decoration portion 8 on the outer periphery of the position detection area Ap, so that the function as the front protective plate 50 for a display device such as a cover glass in the conventional display device 200 illustrated in FIG. And can also be used as the front protective plate 50 for a display device.
The touch panel substrate 10 configured to also serve as the display device front protective plate 50 can be referred to as a “front protective plate integrated touch panel substrate”.
The touch panel substrate 10 is combined with the front protective plate 50 for the display device and integrated, thereby further reducing the number of parts and reducing the thickness.

[Material identification of the low reflection layer 5 and the decorative portion 8]
In the form in which the touch panel substrate 10 also has the decorative portion 8, when the decorative portion 8 has a component having low reflection and light shielding properties similar to the low reflective layer 5, the low reflective layer 5 is used as the decorative portion. 8 and the same material. The low reflective layer 5 is preferably formed of the same material as the decorative portion 8. By forming the low reflective layer 5 with the same material as the decorative portion 8, the low reflective layer 5 can be provided in the same process as the decorative portion 8 without increasing the number of steps, and thus the reflective conductive layer 3. This is because it is possible to realize a structure that does not stand out without cost. Of course, in this case, since the low reflection layer 5 and the decorative portion 8 are formed on the same surface of the translucent substrate 1, they can be simultaneously formed in the same process.

Furthermore, if it explains in detail about simultaneous formation, it can be formed simultaneously in the same process by setting it as the low reflection layer 5 and the decoration part 8 of the structure provided in contact with the "surface which can be formed simultaneously." This is paradoxical, but if it can be easily understood by the reverse “surface that cannot be formed simultaneously”, for example, the transparent substrate 1 of the overcoat layer 9 with respect to the surface of the overcoat layer 9 described later. The decorative portion 8 is formed in contact with one surface such as the side, and the low reflective layer 5 is formed in contact with the other surface. The decorative portion 8 and the low reflective layer 5 are “simultaneously formed”. The structure is not provided in contact with the “possible surface”. Therefore, the layers formed simultaneously with each other can also be referred to as layers formed in contact with “surfaces that can be formed simultaneously”.
Note that “in contact with the surface that can be formed simultaneously” is the same for the relationship between the reflective conductive layer 3 and the wiring 7 and the relationship between the insulating layer 4 and the decorative portion 8. In addition, although it demonstrated as the "decoration part 8" above, the decoration part 8 is the meaning of the layer which specifically comprises the decoration part 8. FIG.

In order to conceal the wiring 7 and the like, the decoration unit 8 has at least a light-shielding layer 8a having a light-shielding property in a mobile phone or the like. In addition to this, as clearly shown in FIG. Usually also have. The infrared transmission window 8b is necessary to prevent malfunction of the touch panel when the mobile phone is put on the ear during a call, and from the viewpoint of extinguishing the display panel and extending the battery life. It is provided in the part of the infrared sensor provided as a human sensor that senses.
As a constituent layer of the decorative portion 8 formed of the same material as the low reflective layer 5, for example, a light shielding layer 8a and an infrared transmission layer 8bL formed in a portion of an infrared transmission window 8b described later with reference to FIG. There is.

[Light shielding layer 8a]
The light shielding property as the light shielding layer 8a itself depends on the required specifications and expression color, but in terms of transmittance, it is 3% or less (1.5 or more at the optical density OD), more preferably transmittance. 1% or less (optical density OD2.0 or more), more preferably 0.01% or less (optical density OD4.0 or more) in terms of transmittance is desirable. This is because if the transmittance exceeds the above, parts to be hidden may be seen.

  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 from a layer containing a color pigment in a resin binder made 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 color pigment used for the light shielding layer 8a may be any color pigment corresponding to the color expressed by the light shielding layer 8a, and is not particularly limited. For example, as a colored pigment, a black pigment, a white pigment, a red pigment, a yellow pigment, a blue pigment, a green pigment, a purple pigment, or the like can be used. The color pigments may be used alone, or a plurality of types of color pigments of the same type or different colors may be used.

  When the light-shielding layer 8a is formed of the same material as the low-reflection layer 5, a dark color such as black is preferable instead of a reflective color such as white. Moreover, black is also a kind of preferable color as a design color expressed by the decorative portion 8.

[Infrared transmission window 8b]
As illustrated in FIG. 10A and FIG. 10B, the decorative portion 8 has an infrared transmission window that has a light shielding property for visible light and a light transmittance for infrared light. An infrared transmission layer 8bL may be provided in the portion 8b. When the light shielding layer 8a is black, if carbon black is used as a black pigment, it becomes light shielding not only for visible light but also for infrared light. This is because the transmissive layer 8bL may be required.

The transmittance of the infrared transmission window 8b with respect to infrared light depends on the required specifications, expression color, and infrared components such as an infrared sensor applied to the infrared transmission window 8b. The transmittance is 70% or more. The infrared region having a transmittance of 70% or more is not necessarily a region of 780 nm or more. For example, an infrared region of 850 nm or more can be sufficiently handled. Note that the upper limit of the infrared region where the transmittance is 70% or more can be dealt with if the near-infrared region is satisfied, usually up to 1300 nm.
The light shielding property of the infrared transmission window 8b with respect to visible light depends on the required specifications and the expression color. However, since the infrared transmission window 8b is usually small in spot, the infrared transmission window 8b and the light shielding layer are not necessarily used. It is not necessary to match the light shielding level of 8a. For this reason, as an example, the light shielding property with respect to visible light of the infrared transmission window 8b is 50% or less (0.2 or more in optical density OD) in terms of transmittance, more preferably transmittance. It is desirably 25% or less (optical density OD 0.6 or more), more preferably 10% or less (optical density OD 1.0 or more) in terms of transmittance.
Thus, for example, the infrared transmission window 8b is provided at a wavelength of 850 nm to 1300 nm for the infrared light region and 70% or more for the visible light region, and 10% or less for the visible light region. The transmittance is not an average value but a value for each wavelength.

(Infrared transmission layer 8bL)
The infrared transmission layer 8bL is usually formed in a similar color to the light shielding layer 8a in order to make the presence of the infrared transmission window 8b inconspicuous. The infrared transmission layer 8bL exhibits a light shielding property with respect to visible light and a transparency with respect to infrared light.
The color that the infrared transmission layer 8bL exhibits when formed of the same material as the low reflection layer 5 is not a reflective color such as white but a dark color such as black. Moreover, black is also a kind of preferable color as a design color expressed by the decorative portion 8.
The infrared transmission layer 8bL does not contain a black pigment such as carbon black, but contains a plurality of types of chromatic color pigments having different colors, for example, red, yellow, and blue, thereby providing a dark color such as black. It can be formed as an expressed layer.

  By forming the low reflection layer 5 with the same material as the infrared transmission layer 8bL, the low reflection layer 5 can be provided without increasing the number of steps in the same process as the infrared transmission layer 8bL of the decorative portion 8. The structure in which the reflective conductive layer 3 is not conspicuous can be realized without cost.

[Wiring 7]
The wiring 7 is made of the same material as the reflective conductive layer 3. That is, in this embodiment, the wiring 7 is formed as a metal layer by a silver alloy (also referred to as APC) made of silver, palladium, and copper.
However, if the reflective conductive layer 3 and the low reflective layer 5 are not formed simultaneously, a known material and a forming method can be used for the wiring 7 in the present invention. For example, the wiring 7 can be made of metal (including alloys thereof) such as silver, gold, copper, chromium, platinum, aluminum, palladium, and molybdenum. For example, a metal layer of an alloy (also referred to as APC) made of silver, palladium, and copper, which is formed by sputtering and then patterned by photolithography, can be used.
For the wiring 7, molybdenum (Mo) / aluminum (Al) / molybdenum (Mo) and a three-layered conductive layer (called MAM) can be used.
The method for forming the wiring 7 is not particularly limited, and it may be formed by a printing method such as a screen printing method or an ink jet printing method in addition to the photolithography method.

[Overcoat layer 9]
The touch panel substrate 10 can include a transparent overcoat layer 9 as in the present embodiment. FIG. 9B shows an example in which the overcoat layer 9 is formed as a protective film for the wiring 7 formed on the surface of the light shielding layer 8 a in the decorative portion 8.
In the present invention, the overcoat layer 9 can also be formed on the entire surface of the touch panel substrate 10 in order to protect them after all other layers are formed. Moreover, it can also provide suitably also between layers. The area | region and thickness direction position which provide the overcoat layer 9 can be set suitably. Accordingly, the overcoat layer 9 may be applied to other embodiments.
Reliability can be improved by the overcoat layer 9.

  For the overcoat layer 9, known materials and forming methods can be employed. For example, the overcoat layer 9 is preferably a transparent resin, preferably a curable resin in terms of heat resistance, and a thermosetting epoxy resin, an ultraviolet curable acrylic resin, or the like can be used. When forming a pattern, it can be formed by photolithography.

〔Production method〕
The touch panel substrate 10 as described above can be manufactured as follows.
First, the low reflection layer 5 and the light shielding layer 8a of the decorative portion 8 are simultaneously formed on the translucent substrate 1 using the same material.
Next, the reflective conductive layer 3 and the wiring 7 on the light shielding layer 8a of the decorative portion 8 are simultaneously formed of the same material as a part of the electrode 2 leaving the bridge connection 2B.
Next, the insulating layer 4 at the intersection 2C and the overcoat layer 9 at the decoration 8 are simultaneously formed of the same material.
Next, the bridge connection 2B of the intersection 2C is formed by the transparent conductive layer 6, and at the same time, the same transparent conductive layer 6 is formed on the entire surface of the mesh electrode 2M, thereby obtaining the touch panel substrate 10 of the present embodiment. It is done.

[Effect in this embodiment]
Even in the configuration described above, the touch panel substrate 10 according to the present embodiment has a structure in which the reflective conductive layer 3 used for the electrode 2 is hidden by the low reflective layer 5. 3 can be made inconspicuous.
Moreover, in addition to the effects described in the third embodiment, the decoration unit 8 is provided, and the touch panel substrate 10 that also serves as the front protective plate for the display device is provided, but the decoration unit 8 for that purpose is provided. Regarding the light shielding layer 8a, the wiring 7 and the overcoat layer 9, the light shielding layer 8a is also used as the low reflection layer 5, the wiring 7 is also used as the reflective conductive layer 3, and the overcoat layer 9 is also used as the insulating layer 4. Since all these layers are simultaneously formed of the same material, the front protective plate-integrated touch panel substrate can be obtained without cost.

<Deformation>
The touch panel substrate 10 of the present invention may take other forms other than the above-described forms. Some of these will be described below.

[Positional relationship between the reflective conductive layer 3 and the low reflective layer 5 in the thickness direction]
In all of the above-described embodiments, the low reflective layer 5 is the pre-formed low reflective layer 5 formed before the reflective conductive layer 3 with respect to the translucent substrate 1. However, in the present invention, the low reflection layer 5 may be a post-formation low reflection layer 5 formed after the reflective conductive layer 3. For example, FIG. 11A and FIG. 11B are different from FIGS. 4A and 4B of the second embodiment in that the pre-formed low reflection layer 5 is formed in a post-formed low layer. This is an example in which the reflective layer 5 is used.
The form shown in FIG. 11 is a form in which the first surface S1, which is one surface on the side having the electrode 2, is not the “back side” but the “front side”.

In the present invention, the meaning that the low reflective layer 5 is formed on the “translucent substrate 1 side with respect to the reflective conductive layer 3” means that the low reflective layer 5 is on one surface of the translucent substrate 1. For example, the low reflective layer 5 may be formed on the other surface of the translucent substrate 1, that is, the second surface S2, with respect to the reflective conductive layer 3 formed on the first surface S1. For example, the cross-sectional view of FIG. 12 is an example corresponding to FIG. 1D of the first embodiment.
In short, in the touch panel substrate 10 of the present invention, an operator who operates the touch panel using the touch panel substrate 10, which is also an observer V who observes the display panel 40 to which the touch panel substrate 10 is applied. The low reflection layer 5 is provided on the side closer to the reflective conductive layer 3 than V.
The various positional relationships in the thickness direction between the reflective conductive layer 3 and the low reflective layer 5 as described above can improve the degree of freedom in product design according to the application to which the touch panel substrate 10 is applied. .

[Electrode 2 and Low Reflective Layer 5 Formed on Both Sides of Translucent Substrate 1]
In all the embodiments described above, the electrode 2 was formed on one side of the translucent substrate 1. However, in the present invention, the electrodes 2 may be formed on both surfaces of the translucent substrate 1. FIG. 13 is a partial enlarged cross-sectional view schematically showing an example of the embodiment. For example, in the first embodiment illustrated in FIG. 1, the first electrode 2 a illustrated in FIG. 1A and the second electrode 2 b illustrated in FIG. By being formed separately, the light-transmitting substrate 1 is formed so as to be insulated from each other.
In the form illustrated in FIG. 13, the low reflective layer 5 is also formed separately on both surfaces of the translucent substrate 1, and the reflective conductive layer formed on the same surface side as the low reflective layer 5 on the translucent substrate 1. 3 is applied.
The form of FIG. 13 has an advantage that it is not necessary to form a single insulating layer 4 because the translucent substrate 1 also serves as a substrate function for the insulation between both electrodes 2 by the bridge structure.

[Constituting material of electrode 2 and presence / absence of application of low reflection layer 5 at intersection 2C]
In the present invention, the reflective conductive layer 3 is used for the mesh electrode 2M as the constituent material of the electrode 2. However, the constituent material of the electrode 2 at the intersection 2C is not particularly limited, and the reflective conductive layer 3 is used. Alternatively, materials other than the reflective conductive layer 3 such as the transparent conductive layer 6 may be used.
In the present invention, even when the reflective conductive layer 3 is used for the electrode 2 at the intersection 2C, the low reflective layer 5 may be applied to the reflective conductive layer 3 in this portion. It is not necessary. Even if the low reflective layer 5 is not applied to the reflective conductive layer 3 at the intersection 2C, the reflective conductive layer 3 is smaller in area than the other portions. This is because it is inconspicuous. However, it is preferable to apply the low reflective layer 5 to such a reflective conductive layer 3 in that the reflective conductive layer 3 is less noticeable.

[Multi-layered electrode 2]
The electrode 2 is composed of a conductive layer called the reflective conductive layer 3 at least in the mesh electrode 2M. However, in the present invention, the electrode 2 may have a configuration in which conductive layers of different materials are laminated. For example, in the third embodiment, the reflective conductive layer 3 and the transparent conductive layer 6 are laminated in the mesh electrode 2M (specifically, the first transparent electrode element 2aE and the second transparent electrode element 2bE). It was a configuration. Furthermore, since the low reflective layer 5 is formed in contact with the reflective conductive layer 3 in the third embodiment, the reflective conductive layer 3 side of the low reflective layer 5 is made of a single chromium film 3. When the chromium oxynitride film having a layer structure is used, the electrode 2 having a three-layer structure in which a chromium single film is also laminated as a conductive layer.
Thus, the area resistivity of the electrode 2 can be lowered by making the electrode 2 have a multilayer structure of two or more layers.

[C] Display device:
The display device according to the present invention is a display device including at least the display panel and the above-described touch panel substrate 10 disposed on the viewer side of the display panel. Hereinafter, two typical modes will be described as examples.

<< First Embodiment >>
A display device 100 according to the present invention illustrated in FIG. 14 includes a display panel 40, a touch panel 30 including the touch panel substrate 10 on the viewer V side of the display panel 40, and a front protective plate 50 for a display device such as a cover glass. Are at least a configuration example provided in this order.
The display panel 40 is typically a liquid crystal display panel or an electroluminescent (EL) panel, but in addition to this, an electronic paper panel, a display device using a cathode ray tube or various known display panels may be used.
The touch panel 30 includes the touch panel substrate 10 and further includes known necessary components such as a control circuit and a connector for realizing a touch panel function.

  In this configuration, since the front protective plate 50 for a display device is provided separately from the touch panel 30, the touch panel substrate 10 has the low reflective layer 5 for the observer V with respect to the reflective conductive layer 3. Any of the reflective conductive layer 3 and the low reflective layer 5 may be located at a position far from the translucent substrate 1 in the thickness direction. The first surface S1, which is one surface, can be arranged in the direction of the front side in addition to the direction of the back side.

A well-known thing can be employ | adopted for the front-surface protective plate 50 for display apparatuses, for example, uses glass plates, such as chemically strengthened glass, and resin plates, such as an acrylic resin, as a transparent base material, The center part of this base material As the display area, it is possible to adopt an opaque decoration portion 8 decorated with an arbitrary color and pattern such as black on the outer periphery of the display area.
As the front protective plate 50 for a display device, when the touch panel 30 including the touch panel substrate 10 includes the decoration portion 8 on the outer peripheral portion of the position detection region Ap, the decoration portion 8 may be omitted.

  By setting it as such a structure, the reflective conductive layer 3 used for the electrode 2 in the touch panel board | substrate 10 with which the touch panel 30 is provided can be set as a display device which is not conspicuous.

<< Second Embodiment >>
The display device 100 according to the present invention illustrated in FIG. 15 includes the display panel 40 and the touch panel substrate 10 in the form of using the front protective plate 50 for a display device such as a cover glass on the viewer side of the display panel 40. 2 is a configuration example including at least a touch panel 30.
With such a configuration, in addition to the effects of the first embodiment as the display device, the effects of reducing the number of parts and reducing the thickness can be obtained.
Moreover, in the form which made the wiring 7 formed in the decoration part 8 and the reflective conductive layer 3 into the same material, or made the low reflection layer 5 into the same material as the decoration part 8, it forms with the same material. Since the layers can be provided in the same step without increasing the number of steps, a structure in which the reflective conductive layer 3 is less noticeable can be realized without cost.

《Interposition of resin layer such as adhesive sheet》
For example, in the display device 100 according to the embodiment illustrated in FIG. 14, there is a gap between the touch panel 30 including the touch panel substrate 10 and the display panel 40 and between the touch panel 30 and the display device front protective plate 50. However, in the display device 100 of the present invention, the constituent members may be filled with a known resin layer such as an adhesive layer. Since the light reflection on the surface of the member is reduced by the resin layer, the display can be more easily seen.

[D] Application:
Applications of the touch panel substrate 10 and the display device 100 according to the present invention are not particularly limited. For example, mobile phones such as smartphones, portable information terminals such as tablet PCs, personal computers, car navigation systems, digital cameras, electronic notebooks, electronic book terminals, electronic signboards, electronic blackboards, game machines, automatic ticket machines, ATM terminals, POS terminals , Vending machines, etc.

DESCRIPTION OF SYMBOLS 1 Translucent board | substrate 2 Electrode for position detection 2a 1st electrode 2aC 1st connection part 2aE 1st transparent electrode element 2b 2nd electrode 2bC 2nd connection part 2bE 2nd transparent electrode element 2B Bridge connection 2C Crossing part 2D Conductive part 2M Mesh electrode 3 Reflective conductive layer 4 Insulating layer 5 Low reflective layer 6 Transparent conductive layer 7 Wiring 8 Decorating part 8a Light shielding layer 8b Infrared transmission window 8bL Infrared transmission layer 9 Overcoat layer 10 Touch panel substrate 20 Conventional touch panel substrate 30 Touch panel 40 Display panel 50 Front protective plate for display device 100 Display device 200 Conventional display device Ap Position detection area dW Extrusion amount L Light S1 First surface S2 Second surface V Observer

Claims (4)

A translucent substrate having a first surface and a second surface opposite to the first surface;
An electrode for position detection formed on one of the first surface and the second surface of the translucent substrate;
The electrode includes a reflective conductive layer that is opaque in itself and exhibits visible light reflectivity,
The reflective conductive layer includes a mesh electrode formed in a mesh shape,
Further, at least in the mesh electrode portion, on the at least one of the first surface and the second surface of the translucent substrate and in the thickness direction, the translucent substrate is more than the reflective conductive layer. Is formed on the side of the transparent substrate with respect to the reflective conductive layer, the outer contour shape when observed from a direction perpendicular to the one surface of the transparent substrate. A low-reflection layer having a portion overlapping the outer contour shape of the reflective conductive layer, and having a lower visible light reflectance than the reflective conductive layer;
A touch panel substrate. On the one surface of the translucent substrate at the outer periphery of the position detection region where the electrodes are formed, have a decorative portion,
The touch panel substrate according to claim 1, wherein the low reflective layer is formed of the same material as that of the layer constituting the decorative portion. On the one surface of the translucent substrate at the outer periphery of the position detection region where the electrode is formed,
The touch panel substrate according to claim 1, wherein the reflective conductive layer is formed of the same material as the wiring.   The display apparatus containing a display panel and the touchscreen substrate in any one of Claims 1-3 arrange | positioned at the observer side of this display panel.

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