CN104350450A - Capacitive touch panel substrate and display device - Google Patents

Capacitive touch panel substrate and display device Download PDF

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Publication number
CN104350450A
CN104350450A CN201380028127.8A CN201380028127A CN104350450A CN 104350450 A CN104350450 A CN 104350450A CN 201380028127 A CN201380028127 A CN 201380028127A CN 104350450 A CN104350450 A CN 104350450A
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CN
China
Prior art keywords
touch panel
conductive layer
layer
capacitive touch
transparency electrode
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Granted
Application number
CN201380028127.8A
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Chinese (zh)
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CN104350450B (en
Inventor
中泽伸介
鳄田宪彦
中村刚
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Publication of CN104350450A publication Critical patent/CN104350450A/en
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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate

Abstract

A capacitive touch panel substrate (10) according to the present invention includes a translucent substrate (1), a plurality of first-direction transparent electrode units (2a) provided on one surface of the translucent substrate (1), a first-direction connection part (3a) for connecting the first-direction transparent electrode units (2a), a plurality of second-direction transparent electrode units (2b) provided on the same surface as the first-direction transparent electrode units (2a), a second-direction connection part (3b) for connecting the second-direction transparent electrode units (2b), and a low reflective layer (6). The second-direction connection part (3b) is insulated from the first-direction connection part (3a) by an insulating layer (4) and includes a reflective and electrically conductive layer (5). The low reflective layer (6) shows low reflectivity in which the Y value is 10% or less in the Yxy color system with the standard light source (C), stipulated by the international commission on illumination (CIE), and at least partially overlaps the reflective and electrically conductive layer (5) when viewed from a direction perpendicular to the one surface of the translucent substrate (1).

Description

Capacitive touch panel substrate and display device
Technical field
The present invention relates to capacitive touch panel substrate and display device.The connecting portion particularly related between the transparency electrode unit of 2 direction arrangements is difficult to obvious capacitive touch panel substrate and comprises the display device of this capacitive touch panel substrate.
Background technology
In recent years, in the various display device such as smart phone, dull and stereotyped PC (personal computer), as the location input device used with display panel combination, touch panel obtains rapidly universal.About touch panel, there will be a known the various modes such as induction, resistance membrane type in the past, and used for various uses, but what wherein attracted attention especially recently is can the touch panel of electrostatic capacitive of multiple point touching (multiple spot inputs simultaneously).
Figure 11 (a) is the decomposition plan view of an example of the display device 200 illustrated in the past, and its formation had is: between the display panel 40 that the touch panel 30 comprising capacitive touch panel substrate 20 is in the past configured in the display such as display panels, EL panel (galvanoluminescence panel) image and the display device front surface fender 50 be made up of glass cover etc.
Figure 11 (b) is the close-up top view of the transparency electrode unit of the capacitive touch panel substrate 20 in the past noticed in Figure 11 (a), and Figure 11 (c) is the enlarged partial sectional view of the connecting portion noticed between the transparency electrode unit in Figure 11 (b).Figure 12 is the enlarged partial sectional view of the connecting portion along the C-C line in Figure 11 (c).
General in capacitive touch panel substrate 20, as shown in Figure 11 (b) He Figure 11 (c), have: the 1st direction transparency electrode unit 2a of i.e. Y-direction arrangement along the vertical direction in the accompanying drawings, the 2nd direction transparency electrode unit 2b of i.e. X-direction arrangement in left-right direction in the accompanying drawings.Herein, by Y-direction also referred to as the 1st direction, by X-direction also referred to as the 2nd direction.
Above-mentioned capacitive touch panel substrate 20 is in the past the examples (with reference to patent documentation 1) the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b being formed at the form of the same face side of light-transmitting substrate 1.The advantage that this form has is: the relative positional accuracy that can improve the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b.
That is, the capacitive touch panel substrate 20 in the past that above-mentioned accompanying drawing exemplifies has on the face of the 1st S1 of light-transmitting substrate 1: the 1st direction transparency electrode unit 2a arranged in the 1st direction (Y-direction in accompanying drawing); The same face is formed at, the 1st direction connecting portion 3a be connected to each other by 2a between the 1st direction transparency electrode unit by the material identical with the 1st direction transparency electrode unit 2a; The same face is formed at by the material identical with the 1st direction transparency electrode unit 2a, between the 1st direction transparency electrode unit 2a, and between the 1st direction connecting portion 3a, at the 2nd direction transparency electrode unit 2b that the 2nd direction (X-direction in accompanying drawing) intersected with the 1st direction (Y-direction) arranges; 2nd direction transparency electrode unit 2b is connected to each other, the 2nd direction connecting portion 3b insulated by insulation course 4 and the 1st direction connecting portion 3a.
Now, 2nd direction connecting portion 3b can obtain transparent in same with the 1st direction connecting portion 3a, there is the form formed by the material identical with the 2nd direction transparency electrode unit 2b, but it is little with each transparency electrode unit phase specific area as utilization, and realize the form of low cost, the known form simultaneously formed by the material identical with wiring 7, wiring 7 is made up of (with reference to patent documentation 1) the metal material of the peripheral part being located at the position surveyed area being arranged with the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b.
That is, as shown in the cut-open view of Figure 12, the reflection conductive layer 5 that the 2nd direction connecting portion 3b is made up of metal material is formed, and this reflection conductive layer 5 is made up of metal levels such as silver alloy and presents the metallic reflective of silver color.
Even if the 2nd direction connecting portion 3b is formed by the material identical with the 2nd direction transparency electrode unit 2b, owing to arranging the relation of insulation course 4, the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b can not be formed simultaneously, need additional 1 operation.But, if formed by the 2nd direction connecting portion 3b material that the wiring 7 of the peripheral part with position surveyed area is identical simultaneously, so correspondingly process number can be reduced.
Prior art document
Patent documentation
Patent documentation 1: Japanese Unexamined Patent Publication 2011-86122 publication.
Summary of the invention
The problem of invention for solving
But, as shown in the cut-open view of Figure 12, if the 2nd direction connecting portion 3b is formed by reflection conductive layer 5, then different from transparency electrode, because light L is mapped to just reflection, therefore obvious sometimes.Reflection conductive layer 5 significantly phenomenon has following tendency: the size of touch panel is less, because the beholder or touch panel watching display panel through it becomes near from the distance of the eyes of operator, therefore becomes more remarkable.
The object of the present invention is to provide a kind of capacitive touch panel substrate, the connecting portion between the transparency electrode unit of 2 the direction arrangements crossed one another is difficult to obviously.In addition, a kind of display device comprising this capacitive touch panel substrate is provided.
For the scheme of dealing with problems
Capacitive touch panel substrate involved in the present invention has:
Light-transmitting substrate, has the 1st and with described 1st opposition side the 2nd;
Multiple 1st direction transparency electrode unit, on any one face of described 1st and the 2nd of described light-transmitting substrate, along the 1st direction arrangement;
1st direction connecting portion, is formed at the same face by the material identical with described 1st direction transparency electrode unit, is connected to each other by described 1st direction transparency electrode unit;
Multiple 2nd direction transparency electrode unit, the same face is formed at by the material identical with described 1st direction transparency electrode unit, between described 1st direction transparency electrode unit, and between described 1st direction connecting portion, arrange in the 2nd direction intersected with described 1st direction;
2nd direction connecting portion, is connected to each other described 2nd direction transparency electrode unit, is insulated, and comprise reflection conductive layer by insulation course and described 1st direction connecting portion; And
Low reflection layer, have according to the Y value in the Yxy chromatic diagram of the standard sources C of International Commission on Illumination CIE defined be less than 10% low reflectivity, when the direction vertical from the described face with described light-transmitting substrate is watched, overlapping at least partially with described reflection conductive layer.
In capacitive touch panel substrate involved in the present invention, also can be that the area of the lap of described low reflection layer and described reflection conductive layer is more than 30% of the area of described reflection conductive layer.
In capacitive touch panel substrate involved in the present invention, also can be the outer contour shape of described low reflection layer when watching from the direction that the described face with described light-transmitting substrate is vertical, comprise the outer contour shape of described reflection conductive layer in inner side.
In capacitive touch panel substrate involved in the present invention, also can be the position surveyed area being arranged with described 1st direction transparency electrode unit and the 2nd direction transparency electrode unit peripheral part, the described face of described light-transmitting substrate has ornamental portion, described low reflection layer is formed by the material identical with described ornamental portion.
In capacitive touch panel substrate involved in the present invention, also can be the position surveyed area being arranged with described 1st direction transparency electrode unit and the 2nd direction transparency electrode unit peripheral part, the described face of described light-transmitting substrate has wiring, described reflection conductive layer is formed by the material identical with described wiring.
In capacitive touch panel substrate involved in the present invention, also can be described low reflection layer at thickness direction, be formed at described light-transmitting substrate side relative to described reflection conductive layer.
In capacitive touch panel substrate involved in the present invention, also can be that described low reflection layer is formed between described reflection conductive layer and described light-transmitting substrate.
In capacitive touch panel substrate involved in the present invention, also can be described light-transmitting substrate play function with the face of opposition side, a described face as the input face of touch panel.
In capacitive touch panel substrate involved in the present invention, also can be described low reflection layer at thickness direction, be formed at the side of the distance from described light-transmitting substrate compared with described reflection conductive layer.
In addition, display device involved in the present invention comprises: display panel; Be configured in the described capacitive touch panel substrate of the beholder side of described display panel.
The effect of invention
According to capacitive touch panel substrate of the present invention, the connecting portion between the transparency electrode unit of 2 the direction arrangements crossed one another can be made to be difficult to obviously.
According to display device of the present invention, the capacitive touch panel substrate that it comprises has above-mentioned effect.
Accompanying drawing explanation
Fig. 1 (a) is the diagrammatic top view of the embodiment (connecting portion first formed) that capacitive touch panel substrate involved in the present invention is described, Fig. 1 (b) is the enlarged partial sectional view of the connecting portion along the C-C line in Fig. 1 (a).
Fig. 2 (a) is the diagrammatic top view of another embodiment (the rear connecting portion formed) that capacitive touch panel substrate involved in the present invention is described, Fig. 2 (b) is the enlarged partial sectional view of the connecting portion along the C-C line in Fig. 2 (a).
Fig. 3 (a) is the diagrammatic top view of another embodiment (connecting portion first formed, through hole connect) that capacitive touch panel substrate involved in the present invention is described, Fig. 3 (b) is the enlarged partial sectional view of the connecting portion along the C-C line in Fig. 3 (a).
Fig. 4 (a) is the diagrammatic top view of another embodiment (connecting portion, the through hole of rear formation connect) that capacitive touch panel substrate involved in the present invention is described, Fig. 4 (b) is the enlarged partial sectional view of the connecting portion along the C-C line in Fig. 4 (a).
Fig. 5 (a) is the diagrammatic top view of another embodiment (reflection conductive layer exposes a part from low reflection layer) that capacitive touch panel substrate involved in the present invention is described, Fig. 5 (b) is the enlarged partial sectional view of the connecting portion along the C-C line in Fig. 5 (a).
Fig. 6 (a), (b) illustrate the vertical view exposing the example of situation reflecting conductive layer in the form of Fig. 5 respectively.
Fig. 7 (a) is the vertical view of another embodiment (low reflection layer and ornamental portion are identical materials) that capacitive touch panel substrate involved in the present invention is described, Fig. 7 (b) illustrates the enlarged partial sectional view of infrared ray through the part of window, and Fig. 7 (c) is the enlarged partial sectional view of the connecting portion corresponding with Fig. 1 (b).
Fig. 8 is the enlarged partial sectional view of another embodiment (with overlayer) (corresponding with the formation of Fig. 1 (b)) that capacitive touch panel substrate involved in the present invention is shown.
Fig. 9 is the cut-open view of the embodiment that display device involved in the present invention is described.
Figure 10 is the cut-open view of another embodiment that display device involved in the present invention is described.
Figure 11 (a) illustrates the touch panel employing capacitive touch panel substrate, display panel and the display device front surface fender that comprise in the past; the decomposition plan view of an example of display device in the past; Figure 11 (b) is the close-up top view of an example of the transparency electrode unit that capacitive touch panel substrate is shown, Figure 11 (c) is the close-up top view of an example of the connecting portion illustrated between transparency electrode unit.
Figure 12 is the enlarged partial sectional view of the connecting portion along the C-C line in Figure 11 (c).
Embodiment
Below, with reference to accompanying drawing, embodiments of the present invention are described.In addition, accompanying drawing is schematic diagram, and in order to the convenience illustrated, the proportionate relationship, transverse and longitudinal ratio etc. of inscape are suitably exaggerated sometimes.
The definition of [A] term:
Below, about the main term used in the present invention, first illustrate that it defines herein.
" face side " refers in capacitive touch panel substrate 10 or other inscapes, when capacitive touch panel substrate 10 and display panel 40 are combinationally used, sending display light side from display panel 40, is the beholder side of the display of viewing display panel 40.
In addition, " face side " refers in capacitive touch panel substrate 10 or other inscapes, and operation employs the operator side of the touch panel 30 of capacitive touch panel substrate 10.
" rear side " refers to the opposition side with described " face side ", refers to that the display light of display panel 40 enters side in capacitive touch panel substrate 10 or other inscapes.
Which face in " the 1st face " and " the 2nd face " becomes described " face side ", and it is arbitrary which face becomes described " face side ".
Which face in " the 1st face " and " the 2nd face " becomes in " face ", and it is arbitrary which face becomes " another face ".
But, in this manual, the face arranging the 1st direction transparency electrode unit 2a and the 2nd transparency electrode unit 2b side, direction is called in " face "." face " described " face side " should be become still become " rear side " and depend on and form relevant use-pattern to the layer of capacitive touch panel substrate 10.The low reflection layer 6 of capacitive touch panel substrate 10 uses relative to reflection conductive layer 5 with becoming face side.
In this manual, the form that main explanation described " face " uses as " rear side ", also illustrates the form used as " face side ".
[B] capacitive touch panel substrate 10:
Capacitive touch panel substrate 10 involved in the present invention is described in each embodiment.
" the 1st embodiment: the connecting portion first formed "
Fig. 1 (a) is the diagrammatic top view of the 1st embodiment of capacitive touch panel substrate 10 involved in the present invention, and Fig. 1 (b) is the enlarged partial sectional view along the C-C line in Fig. 1 (a).
Present embodiment first forms the 2nd direction connecting portion 3b, rear formation the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b and the form of the structure obtained.
The formation of the capacitive touch panel substrate 10 of the embodiment shown in Fig. 1 is:
Light-transmitting substrate 1;
On a face of this light-transmitting substrate 1, along multiple 1st direction transparency electrode unit 2a of the 1st direction arrangement;
The same face is formed at, by the 1st direction connecting portion 3a that the 1st direction transparency electrode unit 2a is connected to each other by the material identical with the 1st direction transparency electrode unit 2a;
The same face is formed at by the material identical with the 1st direction transparency electrode unit 2a, between the 1st direction transparency electrode unit 2a and between the 1st direction connecting portion 3a, at multiple 2nd direction transparency electrode unit 2b that the 2nd direction intersected with the 1st direction arranges;
2nd direction transparency electrode unit 2b is connected to each other, is insulated by insulation course 4 and the 1st direction connecting portion 2a, comprise the 2nd direction connecting portion 3b of reflection conductive layer 5;
Use is the low reflectivity of less than 10% according to the Y value in the Yxy chromatic diagram of International Commission on Illumination CIE specified standard light source C, from when that is the 1st direction that S1 is vertical is watched with the described face of light-transmitting substrate 1, overlapping at least partially with reflection conductive layer 5.
And, in the present embodiment, reflection conductive layer 5 and low reflection layer 6 described overlapping: from when that is the 1st direction that S1 is vertical is watched with the described face of light-transmitting substrate 1, the outer contour shape of low reflection layer 6 comprises the overlapping degree of the outer contour shape reflecting conductive layer 5 in inner side.In other words, this be reflection conductive layer 5 area 100%, namely overlapping with low reflection layer 6 at gamut.
In the present embodiment, the 1st S1 becoming a face of light-transmitting substrate 1 is the face above accompanying drawing in the cut-open view of Fig. 1 (b).So, capacitive touch panel substrate 10 in this cut-open view, be imagination using the S2 of the 2nd on the downside of accompanying drawing as face side, the form that the beholder V of display panel towards the operator being also touch panel uses.
In the figure, in XY vertical coordinate system, Y-direction is the 1st direction, and X-direction is the 2nd direction.
In addition, in the present invention, the 1st direction crossed one another and the 2nd direction not necessarily must be vertical.
The diagrammatic top view of Fig. 1 (a), in the surveyed area Ap of position, is not all depicted in multiple 1st direction transparency electrode unit 2a of the 1st direction arrangement and the multiple 2nd direction transparency electrode unit 2b in the 2nd direction arrangement.Notice the part of the 2nd direction connecting portion 3b be connected to each other by the 2nd direction transparency electrode unit 2b, depict 1 the 2nd direction connecting portion 3b and periphery thereof with only representing.In addition, be formed at the wiring 7 of the peripheral part of position surveyed area Ap as the wiring be connected with the 1st direction transparency electrode unit 2a, also only schematically depict 1, the diagram of the wiring 7 be connected with the 2nd direction transparency electrode unit 2b is omitted.
In addition, in the figure, in the peripheral part of position surveyed area Ap, be connected overlappingly with wiring 7, be located at the peripheral part of position surveyed area Ap by the material identical with the 1st direction transparency electrode unit 2a the 1st direction transparency electrode enlarged portion 7a that pattern is formed at the same face simultaneously.
Fig. 1 (a) watches the vertical view of capacitive touch panel substrate 10 from being formed with the reflection side " rear side " such as conductive layer 5, low reflection layer 6.In Fig. 1 (a), the insulation course 4 formed at the opposite side of the hyaline layers such as the 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b, reflection conductive layer 5 and low reflection layer 6 dotted line are described, because if this hyaline layer is the opaque position relationship that so originally can become hiding layer.But, represent just for ease of understanding with dotted line, the not position relationship of accurate presentation layer.
Between the enlarged partial sectional view of the vertical view of Fig. 1 (a), Fig. 1 (b), the magnitude relationship of the size in accompanying drawing between each inscape such as left and right directions is not constant.
The explanation relevant to these Reference numerals for other embodiments involved in the present invention accompanying drawing too.
In the present embodiment, as long as low reflection layer 6 comprise from outer contour shape when that is the 1st direction that S1 is vertical is watched with the described face of light-transmitting substrate 1 outer contour shape reflecting conductive layer 5 in inner side, also can be identical and overlap each other completely.
In the present embodiment shown in Fig. 1, the outer contour shape of low reflection layer 6 is rectangular shape, and the outer contour shape of reflection conductive layer 5 is also rectangular shape.And the outer contour shape of low reflection layer 6 is larger than the outer contour shape of reflection conductive layer 5.And the outer contour shape of low reflection layer 6 exposes relative to the outer contour shape of reflection conductive layer 5 laterally its all-round enclosing.In addition, in the present invention, the outer contour shape of low reflection layer 6 is arbitrary, is not limited to rectangle.Reflection conductive layer 5 too.
The outer contour shape of low reflection layer 6 has in position alignment accuracy in the meaning of some surpluses, preferably relative to the outer contour shape of reflection conductive layer 5 in the all-round shape exposed laterally of enclosing more than 0.5 μm, preferably more than 1 μm, more preferably more than 2 μm, preferably more than 4 μm further.Just, even if preferably expose, also below 100 μm, preferably less than 30 μm, more preferably less than 10 μm.If this is because expose excessively, then the part of low reflection layer 6 can block the display of the display panel through touch panel viewing, can bring adverse effect to display quality.
In the present embodiment, be that low reflection layer 6 is formed at light-transmitting substrate 1 side at thickness direction relative to reflection conductive layer 5, be more specifically formed at the form between reflection conductive layer 5 and light-transmitting substrate 1.
Just, in the present invention, described " relative to reflection conductive layer 5 in light-transmitting substrate 1 side " is also contained in the form of another face, i.e. the 2nd the S2 upper formation low reflection layer 6 of light-transmitting substrate 1.In a word, the formation of capacitive touch panel substrate 10 of the present invention is: the operator that operation employs the touch panel of capacitive touch panel substrate 10 is also the beholder V that viewing has been suitable for the display panel 40 of capacitive touch panel substrate 10, has low reflection layer 6 at the nearside of this beholder V compared with reflection conductive layer 5.
[material and forming method]
[light-transmitting substrate 1]
Described light-transmitting substrate 1 can use known material, and representative is glass plate, but also can be the resin materials such as vibrin.
[the 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b and the 1st direction connecting portion 3a]
Described 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b and the 1st direction connecting portion 3a can adopt known material and forming method.Such as, can use and lithographically wait ITO (Indium Tin Oxide; Indium tin oxide), IZO (Indium Zinc Oxide; Indium-zinc oxide), AZO (Aluminum Zinc Oxide; Aluminium zinc oxide) etc. electrically conducting transparent film patterns formed material.
[the 2nd direction connecting portion 3b and reflection conductive layer 5]
2nd direction connecting portion 3b at least comprises reflection conductive layer 5.
Reflection conductive layer 5 can adopt known material and the forming methods such as the metal line material beyond described electrically conducting transparent body thin film.Such as, reflect conductive layer 5 and can use the metals such as silver, gold, copper, chromium, platinum, aluminium, palladium, molybdenum (comprising these alloy) etc.Such as, the metal level of the alloy (also referred to as APC) be made up of silver, palladium and copper can be used as to utilize sputtering method masking after, the layer of lithographically pattern formation.The reflection conductive layer 5 formed by these metal materials presents the distinctive reflectivity of metal, in addition, normally opaque.Therefore, because light easily reflects and obviously, be therefore difficult to obviously at low reflection layer 6.
The reflectivity of reflection conductive layer 5 refers to that reflectivity is at visible-range (380 ~ 780nm) average out to more than 50%.Such as, generally speaking, silver is more than 90%, and aluminium is more than 80%, and gold drops to close to 50% in short wavelength range, but average out to more than 50%.
Reflection conductive layer 5 is not limited to metal material, if such as illustrate reflectivity, also can be electroconductive polymer.
In the present embodiment, reflection conductive layer 5 also can be formed as the silver alloy (also referred to as APC) by being made up of silver, palladium and copper, utilizes the metal level of photoetching process and pattern formation.
In the present embodiment, reflection conductive layer 57 to be formed by identical material with wiring, and be formed at the same face simultaneously, be specifically a face i.e. the 1st S1 of light-transmitting substrate 1.
The size of the outer shape of reflection conductive layer 5, such as in the present embodiment shown in Fig. 1, is the rectangle of width 5 ~ 20 μm, length 20 ~ 500 μm.Described width is the size of the 1st direction (accompanying drawing Y-direction), and described length is the size of the 2nd direction (accompanying drawing X-direction).
2nd direction connecting portion 3b, except reflection conductive layer 5, also comprises the electrically conducting transparent body thin films such as above-mentioned ITO, can be electrically conducting transparent body thin film and reflect conductive layer 5 and be connected and the lit-par-lit structure that connects.
[insulation course 4]
Insulation course 4 is layers of electrical insulating property, can adopt known material and forming method.Insulation course 4, such as resin bed, can use ultraviolet hardening acrylic resin to utilize photoetching process to carry out pattern and be formed.
In addition, in this manual, " insulation " and " connection " all use as the term in electric meaning.
Insulation course 4 can be transparent or opaque, but preferably transparent.This is because the transparency of capacitive touch panel substrate 10 can not be made to decline.In the present embodiment, insulation course 4 is formed as transparent layer.
[low reflection layer 6]
Low reflection layer 6 be with reference to have the standard sources C according to International Commission on Illumination CIE defined JIS-Z8701 Yxy chromatic diagram in Y value be less than 10% low reflexive layer.In addition, measure that yes from 2 faces of the aspect of low reflection layer 6, watch the face side far away with reflecting conductive layer 5 to carry out.Low reflection layer 6 also illustrates light-proofness (opacity) simultaneously.This is because the reflected light carrying out self-reflection conductive layer 5 can be reduced.So low reflection layer 6 illustrates low reflectivity and light-proofness, also can be referred to as hidden for reflection conductive layer 5 " hidden layer ".Low reflection layer 6 can as in order to make the unconspicuous layer of described reflection conductive layer 5 play function.
Described light-proofness is from making the unconspicuous viewpoint of reflection conductive layer 5, with transmitance preferably maximum also below 10% (optical concentration OD is for more than 1), more preferably transmitance is less than 1% (optical concentration OD is more than 2.0), and preferably transmitance is less than 0.01% (optical concentration OD is more than 4.0) further.
Low reflection layer 6 comprises the dark-coloured layer such as the black of the black pigments such as carbon black as presenting in the resin binder that is made up of the solidfied material of curable resin, and photoetching process can be utilized to carry out pattern formation.Curable resin can use the photoresists such as ultraviolet hardening acrylic resin.In the present embodiment, low reflection layer 6 uses the ultraviolet hardening acrylic resin comprising carbon black to carry out pattern by photoetching process to be formed.
The dead color such as be black to make low reflection layer 6, also can become and use the color pigment such as red, yellow, blue, green beyond multiple carbon black to present the layer of black.Such as, the coloring pigment of these 3 kinds of colors red, yellow, blue also can be used to present black.Dead color refers to except black, and the colour such as mazarine, bottle green, brightness is low, and described Y illustrates the color of less than 10%.
So, as the coloring pigment that low reflection layer 6 uses, can use black pigment, Chinese white, red pigment, yellow uitramarine, blue pigment, viridine green, violet pigment etc. a kind or two or more.
By nitrogen chromium oxide etc., low reflection layer 6 also himself can illustrate that dark-coloured inorganic material is formed.
Low reflection layer 6 is preferably electrical insulating property.If this is because low reflection layer 6 is electric conductivity, then forms and the combination of pattern form according to layer, be difficult to the insulativity of the part guaranteeing to need insulativity.Such as, although no problem in the present embodiment shown in Fig. 1, in the 2nd embodiment of aftermentioned Fig. 2, be difficult to the insulativity guaranteeing the 2nd direction transparency electrode unit 2b and the 1st direction connecting portion 3a.
[wiring 7]
Wiring 7 can adopt known material and forming method.Such as, wiring 7 can use the metals such as silver, gold, copper, chromium, platinum, aluminium, palladium, molybdenum (comprising these alloy) etc.Such as, the metal level of the alloy (also referred to as APC) be made up of silver, palladium and copper can be used as to utilize sputtering method masking after, the layer of lithographically pattern formation.
In the present embodiment, 7 silver alloy (also referred to as APC) be made up of silver, palladium and copper that connect up are formed as metal level.That is, in the present embodiment, described reflection conductive layer 57 to be formed by identical material with wiring, and be formed at the same face simultaneously, be specifically a face i.e. the 1st S1 of light-transmitting substrate 1.
[manufacture method]
Capacitive touch panel substrate 10 so above can manufacture as follows.
First, in a face of light-transmitting substrate 1, that is the 1st S1 is formed with low reflection layer 6.Next, the reflection conductive layer 5 as the 2nd direction connecting portion 3b is carried out pattern by identical material simultaneously formed with wiring 7.Next, insulation course 4 carries out pattern formation.Next, the 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b carry out pattern with the 1st direction connecting portion 3a by identical material are simultaneously formed.By like this, capacitive touch panel substrate 10 can be manufactured.
[effect of present embodiment]
By becoming above formation like this, in the capacitive touch panel substrate 10 of present embodiment, owing to being configured to reflection conductive layer 5 Hide All that the connecting portion between transparency electrode unit uses by low reflection layer 6, therefore, it is possible to effectively make connecting portion be difficult to obviously.
And, in the present embodiment, because reflection conductive layer 5 is formed by the material identical with wiring 7, therefore reflect conductive layer 5 does not increase process number with wiring 7 and just can arrange in same operation, can not increase cost and make the unconspicuous structure of reflection conductive layer 5 with regard to realization.
" the 2nd embodiment: the rear connecting portion formed "
Fig. 2 (a) is the diagrammatic top view of the 2nd embodiment of capacitive touch panel substrate 10 involved in the present invention, and Fig. 2 (b) is the enlarged partial sectional view along the C-C line in Fig. 2 (a).
Present embodiment first forms the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b, rear formation the 2nd direction connecting portion 3b and the form of the structure obtained.
The capacitive touch panel substrate 10 of the embodiment shown in Fig. 2 is relative to the 1st embodiment shown in above-mentioned Fig. 1, all identical except putting as follows except difference.Therefore, the explanation of same section is omitted.
A) formation of conductive layer 5 and wiring 7 is reflected; With order this point contrary of the formation of the 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b and the 1st direction connecting portion 3a.(in other words, contrary with the position relationship of back layer by the superficial layer of insulation course 4)
B) due to above-mentioned a), the formation of insulation course 4; Order this point contrary of the formation of the 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b and the 1st direction connecting portion 3a, and the formation of insulation course 4; Order this point contrary of the formation of reflection conductive layer 5 and wiring 7.
[manufacture method]
Capacitive touch panel substrate 10 so above can manufacture as follows.
First, in a face of light-transmitting substrate 1, that is the 1st S1 is formed with low reflection layer.Next, the 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b carry out pattern with the 1st direction connecting portion 3a by identical material are simultaneously formed.Next, insulation course 4 carries out pattern formation.Next, the reflection conductive layer 5 as the 2nd direction connecting portion 3b is carried out pattern by identical material simultaneously formed with wiring 7.By like this, capacitive touch panel substrate 10 can be manufactured.
[material of reflection conductive layer 5 and wiring 7]
The advantage had in the present embodiment is: carry out after pattern formation relative to while the 1st direction transparency electrode unit 2a, the 2nd direction transparency electrode unit 2b and the 1st direction connecting portion 3a because the pattern reflecting conductive layer 5 and wiring 7 is formed, the patience relative to etching solution when the material of therefore reflection conductive layer 5 and wiring 7 does not need the pattern of consideration the 1st direction transparency electrode unit 2a etc. to be formed.
Therefore, in the present embodiment, as the material of reflection conductive layer 5 with wiring 7,3 layers of wiring material (being called MAM) constructed of molybdenum (Mo), aluminium (Al), molybdenum (Mo) can also be adopted.
[effect of present embodiment]
By becoming above formation like this, in the capacitive touch panel substrate 10 of present embodiment, owing to being configured to reflection conductive layer 5 Hide All that the connecting portion between transparency electrode unit uses by low reflection layer 6, therefore, it is possible to effectively make connecting portion be difficult to obviously.
And, in the present embodiment, because reflection conductive layer 5 is formed by the material identical with wiring 7, therefore reflect conductive layer 5 does not increase process number with wiring 7 and just can arrange in same operation, can not increase cost and make the unconspicuous structure of reflection conductive layer 5 with regard to realization.
" the 3rd embodiment: the connecting portion first formed, through hole connect "
Fig. 3 (a) is the diagrammatic top view of the 3rd embodiment of capacitive touch panel substrate 10 involved in the present invention, and Fig. 3 (b) is the enlarged partial sectional view along the C-C line in Fig. 3 (a).
Present embodiment first forms the 2nd direction connecting portion 3b, the insulation course 4 with through hole 4h is formed afterwards at the gamut of position surveyed area Ap, next, form the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b, with through hole 4h, the 2nd direction transparency electrode unit 2b is connected with the 2nd direction connecting portion 3b and the form of the structure obtained.
The capacitive touch panel substrate 10 of the embodiment shown in Fig. 3 is relative to the 1st embodiment shown in above-mentioned Fig. 1, all identical except putting as follows except difference.Therefore, the explanation of same section is omitted.
A) insulation course 4 is not only formed at connecting portion, and is formed at the gamut of position surveyed area Ap, but is not formed at this point of part that the 2nd direction transparency electrode unit 2b and the 2nd direction connecting portion 3b carry out the through hole 4h be connected.
B) due to above-mentioned a), the reflection conductive layer 5 as the 2nd direction connecting portion 3b is connected this point in the part of through hole 4h with the 2nd direction transparency electrode unit 2b.
[manufacture method]
Capacitive touch panel substrate 10 so is above when carrying out pattern and being formed by insulation course 4, through hole 4h is formed as the non-formation portion of layer simultaneously, be formed at the gamut of position surveyed area Ap, can manufacture equally with above-mentioned 1st embodiment in addition.
[effect of present embodiment]
By becoming above formation like this, in the capacitive touch panel substrate 10 of present embodiment, owing to being configured to reflection conductive layer 5 Hide All that the connecting portion between transparency electrode unit uses by low reflection layer 6, therefore, it is possible to effectively make connecting portion be difficult to obviously.
And, in the present embodiment, because reflection conductive layer 5 is formed by the material identical with wiring 7, therefore reflect conductive layer 5 does not increase process number with wiring 7 and just can arrange in same operation, can not increase cost and make the unconspicuous structure of reflection conductive layer 5 with regard to realization.
" the 4th embodiment: connecting portion, the through hole of rear formation connect "
Fig. 4 (a) is the diagrammatic top view of the 4th embodiment of capacitive touch panel substrate 10 involved in the present invention, and Fig. 4 (b) is the enlarged partial sectional view along the C-C line in Fig. 4 (a).
Present embodiment first forms the 1st direction transparency electrode unit 2a and the 2nd direction transparency electrode unit 2b, after the insulation course 4 with through hole 4h is formed at the gamut of position surveyed area Ap, following formation the 2nd direction connecting portion 3b, is connected with the 2nd direction transparency electrode unit 2b with through hole 4h and the form of the structure obtained.
The capacitive touch panel substrate 10 of the embodiment shown in Fig. 4 is relative to the 2nd embodiment shown in above-mentioned Fig. 2, all identical except putting as follows except difference.Therefore, the explanation of same section is omitted.
A) insulation course 4 is not only formed at connecting portion, and is formed at the gamut of position surveyed area Ap, but is not formed at this point of part that the 2nd direction transparency electrode unit 2b and the 2nd direction connecting portion 3b carry out the through hole 4h be connected.
B) due to above-mentioned a), the reflection conductive layer 5 as the 2nd direction connecting portion 3b is connected this point in the part of through hole 4h with the 2nd direction transparency electrode unit 2b.
[manufacture method]
Capacitive touch panel substrate 10 so is above when carrying out pattern and being formed by insulation course 4, through hole 4h is formed as the non-formation portion of layer simultaneously, be formed at the gamut of position surveyed area Ap, can manufacture equally with above-mentioned 2nd embodiment in addition.
[effect of present embodiment]
Do by becoming above formation like this, in the capacitive touch panel substrate 10 of present embodiment, owing to being configured to reflection conductive layer 5 Hide All that the connecting portion between transparency electrode unit uses by low reflection layer 6, therefore, it is possible to effectively make connecting portion be difficult to obviously.
And, in the present embodiment, because reflection conductive layer 5 is formed by the material identical with wiring 7, therefore reflect conductive layer 5 does not increase process number with wiring 7 and just can arrange in same operation, can not increase cost and make the unconspicuous structure of reflection conductive layer 5 with regard to realization.
" the 5th embodiment: reflection conductive layer 5 exposes a part from low reflection layer 6 "
Fig. 5 (a) is the diagrammatic top view of the 5th embodiment of capacitive touch panel substrate 10 involved in the present invention, and Fig. 5 (b) is the enlarged partial sectional view along the C-C line in Fig. 5 (a).
It is overlapping with a part for reflection conductive layer 5 that present embodiment is low reflection layer 6, and result reflection conductive layer 5 exposes a part of and visible form from low reflection layer 6.
The capacitive touch panel substrate 10 of the embodiment shown in Fig. 5 is relative to the 1st embodiment shown in above-mentioned Fig. 1, all identical except putting as follows except difference.Therefore, the explanation of same section is omitted.
A) low reflection layer 6 is overlapping with a part for reflection conductive layer 5, reflects conductive layer 5 and exposes a part and this point as seen from low reflection layer 6.
[overlapping degree of low reflection layer 6 and reflection conductive layer 5]
So far each embodiment illustrated is all that low reflection layer 6 is overlapping at the gamut of reflection conductive layer 5, and the outer contour shape of low reflection layer 6 is comprised in the form of the inner side of the outer contour shape of reflection conductive layer 5.Therefore, reflection conductive layer 5 is completely hidden by low reflection layer 6 at its gamut, and reflection conductive layer 5 is invisible.
Making, reflection conductive layer 5 is in this point not obvious, preferably reflect conductive layer 5 overlapping with low reflection layer 6 at its gamut, even if but reflection conductive layer 5 is how many visible, as long as in fact slight to the adverse effect of the display quality involved by reflection conductive layer 5, as long as the purposes that the display quality of reflection involved by conductive layer 5 declines can be allowed in addition, it so also can be reflection conductive layer 5 exposes part form from low reflection layer 6.
Such as, though owing to being that low reflection layer 6 also can block display frame, therefore consider the adverse effect to display quality, preferably low reflection layer 6 is little as far as possible.That is, when considering the adverse effect to display quality that low reflection layer 6 causes self, reflection conductive layer 5 can be adopted from low reflection layer 6 to expose the form of a part.That is, from viewpoint reflection conductive layer 5 hidden completely, the minimum shape of low reflection layer 6 is with the reflection same shape of conductive layer 5 and same size.But, if allow and generate some exposed division E, so the outer contour shape of low reflection layer 6 is less than the outer contour shape of reflection conductive layer 5, departs from, also can reduce the total area of the area of low reflection layer 6 and the area of exposed division E even if make to produce some positions like this.Therefore, it is possible to reduce the key element of blocking display frame.
In addition, also consider have because aligned in position precision is insufficient, reflection conductive layer 5 departs from the position of the relative position relation of low reflection layer 6, makes the situation that the part reflecting conductive layer 5 is exposed from low reflection layer 6.
This 5th embodiment is in such a case etc., and reflection conductive layer 5 exposes the form of a part from low reflection layer 6.
Reflect shown in Fig. 5 (a) and Fig. 5 (b) conductive layer 5 relative to low reflection layer 6 in the accompanying drawings to the right position depart from, result produces reflection conductive layer 5 exposes the exposed division E of a part situation from low reflection layer 6.Consequently, exposed division E can by beholder V visual to.This figure is the situation that reflection conductive layer 5 departs from bearing of trend (X-direction) position of its line, but when the relation that reflection conductive layer 5 and the relative position of low reflection layer 6 depart from is to reflect conductive layer 5 for benchmark, what have departs from its position, line width direction, and bearing of trend and this both direction position, line width direction of the line in reflection conductive layer 5 had are departed from.
Fig. 6 is the direction of departing from the relative position of low reflection layer 6 about reflection conductive layer 5, the figure exemplified with the situation in 2 directions.Fig. 6 (a) illustrates the situation of the bearing of trend (being X-direction in this figure) of the line of reflection conductive layer 5, and Fig. 6 (b) illustrates the situation in the line width direction (being Y direction in this figure) of the line of reflection conductive layer 5.In Fig. 6 (a) and Fig. 6 (b), the direction shown in two arrows is the direction that reflection conductive layer 5 departs from the relative position of low reflection layer 6.Fig. 6 (a) is equivalent to the position offset relation of described Fig. 5.
Fig. 6 (a) be low reflection layer 6 relative to reflection conductive layer 5 X-direction the offset of accompanying drawing right bit from situation, produce exposed division E in the left side of reflection conductive layer 5.Fig. 6 (b) is the situation that low reflection layer 6 departs from accompanying drawing lower position in Y direction relative to reflection conductive layer 5, produces exposed division E in the upside of reflection conductive layer 5.In the drawings, for ease of understanding, reflection conductive layer 5 and low reflection layer 6 do not apply shade in the inner side of outer contour shape respectively, are only applied with shade in the part of exposed division E.In addition, the outer contour of the reflection conductive layer 5 of the part hidden by low reflection layer 6 is shown in broken lines.
(reflection conductive layer 5 is by the hidden area ratio of low reflection layer 6)
Like this, overlapping with a part for reflection conductive layer 5 at low reflection layer 6, reflection conductive layer 5 is exposed the form of a part from low reflection layer 6, the area of the part that low reflection layer 6 is overlapping with reflection conductive layer 5 is more than 30% of the area reflecting conductive layer 5, preferably more than 50%, more preferably more than 70%, further preferably more than 80% area ratio.If this is because described area ratio is less than described value, then display quality can be made to decline.
As can be seen from Figure 6, even if reflection conductive layer 5 is such as 1 μm of grade, is independently same size with the direction of exposing from the size that low reflection layer 6 exposes, when the line direction (being X-direction in accompanying drawing) reflecting conductive layer 5 is exposed; And online Width (being Y direction in accompanying drawing) is when exposing, the area of the exposed division E that reflection conductive layer 5 is exposed from low reflection layer 6, also different relative to the area ratio of the area of reflection conductive layer 5.Especially, it is when the position, line width direction shown in Fig. 6 (b) is departed from and exposes that the adverse effect to display quality that the exposed division E reflecting conductive layer 5 causes increases.Even if in such a case, making by the described area ratio that low reflection layer 6 is hidden is more than described value, thus can suppress the decline of display quality.
Concrete example is shown, relative to the line width 15 μm of the line of reflection conductive layer 5, the online Width of the total length of this line have 3 μm unhidden by low reflection layer 6 and expose time, described area ratio is { (15 μm-3 μm)/15 μm } × 100=80%.
[effect of present embodiment]
By becoming above formation like this, in the capacitive touch panel substrate 10 of present embodiment, reflection conductive layer 5 part used by connecting portion between transparency electrode unit owing to being configured to low reflection layer 6 is hidden, therefore, it is possible to make connecting portion be difficult to obviously.In addition, the adverse effect to display quality that low reflection layer 6 also can be suppressed self to cause.
And, in the present embodiment, because reflection conductive layer 5 is formed by the material identical with wiring 7, therefore reflect conductive layer 5 does not increase process number with wiring 7 and just can arrange in same operation, can not increase cost and make the unconspicuous structure of reflection conductive layer 5 with regard to realization.
Further, by allowing exposing of the reflection conductive layer 5 of a certain degree, can release position alignment accuracy, can suppress the adverse effect of display quality and manufacture to become easier, realize cost degradation further.
" deformation form "
Capacitive touch panel substrate 10 of the present invention can take other forms beyond above-mentioned form.Below, its part is described.
[reflection conductive layer 5 exposes the form of a part from low reflection layer 6]
Expose from low reflection layer 6 deformation form that the form of a part and the 5th embodiment that illustrates also are the 1st embodiments as reflection conductive layer 5.
But in the present invention, reflect conductive layer 5 and expose from low reflection layer 6 deformation form that a part of form is not limited to the 1st embodiment.Reflection conductive layer 5 exposes a part of form from low reflection layer 6 also can as the deformation form for the 2nd embodiment, the 3rd embodiment, the 4th other forms such as embodiment or aftermentioned deformation form.
[exposed division E is utilized the form as reflecting part]
Expose the form of a part from low reflection layer 6 in reflection conductive layer 5, also the part of the reflection conductive layer 5 exposed from low reflection layer 6 and exposed division E can be utilized energetically as reflecting part.
Such as, in the game machine of shooting game etc., the touch panel comprising capacitive touch panel substrate 10 is configured in the display device of the beholder side of display panel, utilize and penetrate from the illumination of gun shaped optical controller the optional position indicated in this display frame, additionally can take the involved reflection position detecting unit such as two-dimensional image sensor such as the CCD of display frame, thus the reflecting part involved by the exposed division E of this reflection position detecting unit and capacitive touch panel substrate 10 forms optical touchless indicating positions detecting unit, can as shooting game machine, wherein, reflection position detecting unit receives the reflected light of the reflecting part reflection of light involved by exposed division E sent from this gun shaped optical controller, thus the position of instruction in detection display picture.In addition, if irradiate light use infrared light, then can easily and visible ray distinguish.
Utilize meaning as reflecting part from using reflection conductive layer 5, low reflection layer 6 is not set and can strengthens this point of intensity of reflected light on the contrary better, but the light of surrounding environment is easy to be mapped to and reflects conductive layer 5 and is easy to obvious.But, be configured to hide by the part of low reflection layer 6 by reflection conductive layer 5, thus the balance that can make the various performances such as easness in the manufacture that significantly difficulty, reflection conductive layer 5 are relevant to the aligned in position precision of low reflection layer 6 of the basic electrical property of the original electrical connecting unit as reflection conductive layer 5, the intensity of reflected light as 1 inscape of the optical touchless indicating positions detecting unit in display frame, the reflection conductive layer 5 as display frame quality and cost more easily, can increase the degree of freedom of design.
And, if the reflecting part of an inscape as optical touchless indicating positions detecting unit and reflection conductive layer 5 are separated independent setting, so process number can correspondingly increase, cost can raise, but by the exposed division E of reflection conductive layer 5 is utilized as reflecting part, be configured to reflecting part formed by the material identical with reflection conductive layer 5 simultaneously, do not increase process number and just can arrange.
Such exposed division E is applied to the reflecting part of an inscape as the optical touchless indicating positions detecting unit in display frame, except game machine purposes, also can be used in as the optional position in instruction display frame, thus carry out the purposes of controller waiting and operate that zooms in or out of the picture centered by this part.Such as, arrange exposed division E regularly, thus exposed division E can play the function as the mesh lines in display frame.
In addition, in above-mentioned form example, about the use of the function of an inscape as optical touchless indicating positions detecting unit, in the purposes of the using method used when being divided into touch panel function and using, be positioned at when hand reaches the position of display frame operator to carry out; In the purposes also by the using method of two functions, be positioned at when hand accesses the position of display frame operator to carry out.
[the additional and display device of ornamental portion 8 dual-purpose of front surface fender]
As exemplified in Fig. 7, in the present invention, capacitive touch panel substrate 10 can have ornamental portion 8 at the peripheral part of position surveyed area Ap.
Ornamental portion 8 be by the touch panel comprising capacitive touch panel substrate 10, employ this touch panel display device in be positioned at the peripheral part of position surveyed area Ap wiring 7, control circuit etc. hide, make for the beholder V of display device or the operator of touch panel invisible, do not affect outward appearance, and show the part of any appearance design.
Capacitive touch panel substrate 10 has ornamental portion 8 at the peripheral part of position surveyed area Ap; thus can play the display device 200 in the past that Figure 11 (a) exemplifies, glass cover etc. as the function of display device front surface fender 50, display device front surface fender 50 can be also used as.
The capacitive touch panel substrate 10 being also used as the formation of display device front surface fender 50 can be called the one-piece type touch panel substrate of display device front surface fender.In this case, the contacting (or close) go forward side by side input face (touching face, surface of contact) of touch panel that line position inputs with the face (another face, the 2nd S2) being provided with the face of the 1st direction transparency electrode 2a with the 2nd direction transparency electrode 2b (face, the 1st S1) opposition side with touch panel sensor as the external conductor such as finger of operator and play function of light-transmitting substrate 1.
Capacitive touch panel substrate 10 is also used as display device front surface fender 50 and integration, thus can obtain the effect of the minimizing of further number of devices, slimming.
[low reflection layer 6, same with the material of ornamental portion 8]
Also have in the form of ornamental portion 8 at capacitive touch panel substrate 10, have in its ornamental portion 8, there is the inscape of the low reflectivity same with low reflection layer 6 and light-proofness time, low reflection layer 6 can be formed by the material identical with ornamental portion 8.In addition, preferably low reflection layer 6 is formed by the material identical with ornamental portion 8.This is because owing to being formed by the material identical with ornamental portion 8 by low reflection layer 6, thus low reflection layer 6 and ornamental portion 8 do not increase process number in same operation just can arrange, therefore, it is possible to do not increase cost just realization make the unconspicuous structure of reflection conductive layer 5.Certainly, in this case, low reflection layer 6 and ornamental portion 8 are formed at (with reference to Fig. 7 (c)) on the same face of light-transmitting substrate 1, thus can be formed in same operation simultaneously.In addition, Fig. 7 (c) illustrates the example that the low reflection layer 6 of the form of Fig. 1 is formed with ornamental portion 8 simultaneously, but the low reflection layer 6 of other forms also can be formed with ornamental portion 8 simultaneously.
Ornamental portion 8, in order to hidden wiring 7 etc., at least has the light shield layer 8a for light-proofness, but in addition, usually also has infrared ray through window 8b etc.When ear during call is attached to mobile phone, need to prevent the misoperation of touch panel, also has the display of closing display panel with the viewpoint etc. of extending battery life, the part of the infrared ray sensor that infrared ray is arranged through window 8b is arranged on the close human body sensor of perceptually human skin.
As the inscape of the ornamental portion 8 formed by the material identical with low reflection layer 6, such as, there is light shield layer 8a; Be formed at the infrared ray transmission layer 8bL of infrared ray through the part of window 8b.
[light shield layer 8a]
The light-proofness of light shield layer 8a is specification, apparent color and different as requested, but with transmitance preferably maximum also below 3% (optical concentration OD is for more than 1.5), more preferably transmitance is less than 1% (optical concentration OD is more than 2.0), and preferably transmitance is less than 0.01% (optical concentration OD is more than 4.0) further.If this is because transmitance exceedes above-mentioned scope, then the device etc. should hidden can become visible.
Light shield layer 8a can be formed with known material and forming method.Such as, the layer comprising coloring pigment in the resin binder that light shield layer 8a can be made up of the solidfied material of curable resin is formed.As curable resin, the photoresists such as ultraviolet hardening acrylic resin can be used.
As the coloring pigment that light shield layer 8a uses, as long as use the coloring pigment corresponding to the color that light shield layer 8a shows, be not particularly limited.Such as, as coloring pigment, black pigment, Chinese white, red pigment, yellow uitramarine, blue pigment, viridine green, violet pigment etc. can be used.Coloring pigment can be used alone with a kind, can also use the coloring pigment of multiple congener color or different colours.
The color presented by light shield layer 8a when being formed with low reflection layer 6 same material is not white such reflective color, but the dark-coloured color that black is such.In addition, the appearance design look that black shows as ornamental portion 8 is also the one of preferred colors.
[infrared ray is through window 8b]
As Fig. 7 (a) and Fig. 7 (b) exemplify, in ornamental portion 8, as visible ray, light-proofness being shown and illustrating that the infrared ray of permeability can arrange infrared ray transmission layer 8bL through the part of window 8b for infrared light.This is because when light shield layer 8a is black, if owing to using carbon black as black pigment, then not only also become light-proofness for visible ray but also for infrared light, the infrared ray transmission layer 8bL of the layer therefore needing material different from light shield layer 8a.
As the permeability for infrared light of infrared ray through window 8b, as requested specification, apparent color, be adapted to infrared ray and utilize device through the infrared ray such as infrared ray sensor of window 8b and different, but an example is shown, the transmitance of region of ultra-red is more than 70%.Described transmitance be more than 70% region of ultra-red must be not necessarily the region of more than 780nm, as long as the region of such as more than 850nm, just can give full play to function.In addition, transmitance is the upper limit of the region of ultra-red of more than 70% is near-infrared region, and it meets 1300nm usually.
Infrared ray is through specification, the apparent color and different as requested of the light-proofness for visible ray of window 8b, but it is less that infrared ray is generally point-like through the part of window 8b, therefore not necessarily needs consistent through the level of the light-proofness of window 8b and light shield layer 8a with infrared ray.Therefore, the example of infrared ray through the light-proofness for visible ray of window 8b is shown, with transmitance preferably maximum also below 50% (optical concentration OD is for more than 0.2), more preferably transmitance is less than 25% (optical concentration OD is more than 0.6), and preferably transmitance is less than 10% (optical concentration OD is more than 1.0) further.
So, infrared ray such as infrared light region, has the transmitance of more than 70% through window 8b at above below the 1300nm of wavelength 850nm; Visible region is had to the transmitance of less than 10%.In addition, this transmitance is not mean value, is the value of each each wavelength.
(infrared ray transmission layer 8bL)
Infrared ray transmission layer 8bL, in order to make infrared ray not obvious through existing of window 8b, is formed by the color similar with light shield layer 8a usually.And infrared ray transmission layer 8bL illustrates light-proofness for visible ray, and for infrared light, permeability is shown.
The color presented by infrared ray transmission layer 8bL when being formed with low reflection layer 6 same material is not white such reflective color, but the dark-coloured color that black is such.In addition, the appearance design look that black shows as ornamental portion 8 is also the one of preferred colors.
Infrared ray transmission layer 8bL does not contain the such black pigment of carbon black, and the coloring pigment containing the mutually different colour of multiple color, such as red, yellow, blue, thus the layer as dead colors such as performance black can be formed.
Due to low reflection layer 6 is formed by the material identical with infrared ray transmission layer 8bL, thus low reflection layer 6 does not increase process number with the infrared ray transmission layer 8bL of ornamental portion 8 in same operation just can arrange, therefore, it is possible to do not increase cost just realization make the unconspicuous structure of reflection conductive layer 5.
And when being also provided with wiring 7, in order to light shield layer 8a hidden wiring 7, light shield layer 8a and wiring 7 relative to the formation order of light-transmitting substrate 1 be subject to surface back side relative to beholder V when employing capacitive touch panel substrate 10 or operator towards restriction, but when wiring 7 does not have overlapping infrared ray transmission layer 8bL, infrared ray transmission layer 8bL and wiring 7 are not subject to the such restriction of the situation of described light shield layer 8a relative to the formation order of light-transmitting substrate 1.Such as, (a) forms wiring 7 after can forming low reflection layer 6 and light shield layer 8a at the same time on light shield layer 8a, forms infrared ray transmission layer 8bL afterwards at the infrared ray of light shield layer 8a through the part of window 8b; Or contrary with it, after (b) can form low reflection layer 6 and light shield layer 8a at the same time, form infrared ray transmission layer 8bL at the infrared ray of light shield layer 8a through the part of window 8b, on light shield layer 8a, form wiring 7 afterwards.In this regard, in the form formed by the material identical with infrared ray transmission layer 8bL by low reflection layer 6, there is the advantage of the degree of freedom not hindering Products Design.
[overlayer 9]
Capacitive touch panel substrate 10, as exemplified in Fig. 8, can comprise transparent overlayer 9.This figure is the form example formed as the superiors on a face i.e. face of the 1st S1 of light-transmitting substrate 1 by overlayer 9.This figure is the form of additional overlayer 9 relative to the form of Fig. 1, but also can add overlayer 9 in other forms.Utilize overlayer 9, can reliability be improved.
Overlayer 9 can adopt known material and forming method.Such as, overlayer 9 is transparent resins, and preferably curable resin in thermotolerance, can use thermosetting epoxy resin, ultraviolet hardening acrylic resin etc.When carrying out pattern formation, can be formed by photoetching process.
[C] display device:
Display device involved in the present invention at least comprises: display panel, be configured in the display device of the above-mentioned capacitive touch panel substrate 10 of the beholder side of this display panel.Below, be described for representational 2 forms.
" the first embodiment "
The display device 100 involved in the present invention that Fig. 9 exemplifies at least sequentially comprises display panel 40; The touch panel 30 of above-mentioned capacitive touch panel substrate 10 is comprised in the beholder V side of this display panel 40; The display device such as the glass cover configuration example of front surface fender 50.
Display panel 40 is display panels, electroluminescence (EL) panel typically, but can be the display equipment involved by electronic paper panel, Braun tube in addition, also can be known various display panels.
Touch panel 30 comprises capacitive touch panel substrate 10, also comprise the control circuit in order to realize touch panel function, connector etc. known needed for device.
In this formation; owing to being that there is the form of separating the display device front surface fender 50 formed with touch panel 30, therefore the formation of capacitive touch panel substrate 10 are low reflection layers 6 relative to its reflection conductive layer 5 be configured to close to beholder V towards.That is, it is arbitrary which the distance light-transmitting substrate 1 reflecting conductive layer 5 and low reflection layer 6 is positioned at position far away at thickness direction, a face of light-transmitting substrate 1 i.e. the 1st S1 except with rear side towards except, can also with face side towards configuration.
Display device front surface fender 50 can adopt known structure; such as the resin plates such as glass plate, acryl resin such as chemically reinforced glass are used as transparent matrix material; the central portion of this matrix material can be adopted as display region, and the peripheral part in this display region has the structure of opaque ornamental portion 8 with the arbitrary colors such as black and pattern decoration.
As display device front surface fender 50, comprise the touch panel 30 of capacitive touch panel substrate 10 when the peripheral part of position surveyed area Ap comprises ornamental portion 8, ornamental portion 8 can be that abridged is formed.
By becoming such formation, the connecting portion between the transparency electrode unit that can become the capacitive touch panel substrate 10 that touch panel 30 comprises is difficult to obvious display device.
" the second embodiment "
The display device 100 involved in the present invention that Figure 10 exemplifies at least comprises: display panel 40; The configuration example of the touch panel 30 of the above-mentioned capacitive touch panel substrate 10 of the form being also used as the display device front surface fenders 50 such as glass cover is comprised in the beholder side of this display panel 40.
By becoming such formation, except the effect that the formation of described Fig. 9 obtains, can obtain that number of devices reduces, the effect of slimming.
In addition, be identical material in the wiring 7 being formed at ornamental portion 8 with reflection conductive layer 5; Or make low reflection layer 6 be in the form of the material identical with ornamental portion 8, owing to not increasing process number in same operation, the layer that formed by identical material just can be set each other, just realize making the unconspicuous structure of reflection conductive layer 5 therefore, it is possible to do not increase cost.
" existence of the resin beds such as adhesion sheet material "
Such as; in display device 100 involved by the embodiment that Fig. 8 exemplifies; be configured to comprising between the touch panel 30 of capacitive touch panel substrate 10 and display panel 40 and between described touch panel 30 and display device front surface fender 50, there is space and there is air layer; but in display device 100 of the present invention, also can fill with known resin beds such as adhering agent layers between each component parts.Utilize resin bed to reduce and reflect at the light of parts surface, thus can be easier to see display clearly.
[D] purposes:
Capacitive touch panel substrate 10 involved in the present invention and the purposes of display device 100 are not particularly limited.Such as the personal digital assistant devices such as mobile phone, dull and stereotyped PC such as smart phone, personal computer, vehicle navigator, digital camera, electronic notebook, game machine, automatic machine, ATM terminal, POS terminal etc.

Claims (10)

1. a capacitive touch panel substrate, has:
Light-transmitting substrate, has the 1st and with described 1st opposition side the 2nd;
Multiple 1st direction transparency electrode unit, on any one face of described 1st and the 2nd of described light-transmitting substrate, along the 1st direction arrangement;
1st direction connecting portion, is formed at the same face by the material identical with described 1st direction transparency electrode unit, is connected to each other by described 1st direction transparency electrode unit;
Multiple 2nd direction transparency electrode unit, the same face is formed at by the material identical with described 1st direction transparency electrode unit, between described 1st direction transparency electrode unit, and between described 1st direction connecting portion, arrange in the 2nd direction intersected with described 1st direction;
2nd direction connecting portion, is connected to each other described 2nd direction transparency electrode unit, is insulated, and comprise reflection conductive layer by insulation course and described 1st direction connecting portion; And
Low reflection layer, have according to the Y value in the Yxy chromatic diagram of the standard sources C of International Commission on Illumination CIE defined be less than 10% low reflectivity, when the direction vertical from the described face with described light-transmitting substrate is watched, overlapping at least partially with described reflection conductive layer.
2. capacitive touch panel substrate as claimed in claim 1, the area of the lap of described low reflection layer and described reflection conductive layer is more than 30% of the area of described reflection conductive layer.
3. capacitive touch panel substrate as claimed in claim 1 or 2, the outer contour shape of described low reflection layer when watching from the direction that the described face with described light-transmitting substrate is vertical, comprises the outer contour shape of described reflection conductive layer in inner side.
4. the capacitive touch panel substrate as described in any one of claims 1 to 3, be arranged with described 1st direction transparency electrode unit and the 2nd direction transparency electrode unit position surveyed area peripheral part, the described face of described light-transmitting substrate has ornamental portion
Described low reflection layer is formed by the material identical with described ornamental portion.
5. the capacitive touch panel substrate as described in any one of Claims 1-4, be arranged with described 1st direction transparency electrode unit and the 2nd direction transparency electrode unit position surveyed area peripheral part, the described face of described light-transmitting substrate has wiring
Described reflection conductive layer is formed by the material identical with described wiring.
6. the capacitive touch panel substrate as described in any one of claim 1 to 5, described low reflection layer, at thickness direction, is formed at described light-transmitting substrate side relative to described reflection conductive layer.
7. capacitive touch panel substrate as claimed in claim 6, described low reflection layer is formed between described reflection conductive layer and described light-transmitting substrate.
8. the capacitive touch panel substrate as described in any one of claim 1 to 7, described light-transmitting substrate play function with the face of opposition side, a described face as the input face of touch panel.
9. the capacitive touch panel substrate as described in any one of claim 1 to 5, described low reflection layer, at thickness direction, is formed at the side of the distance from described light-transmitting substrate compared with described reflection conductive layer.
10. a display device, comprises:
Display panel;
Be configured in the capacitive touch panel substrate described in any one of the claim 1 to 9 of the beholder side of described display panel.
CN201380028127.8A 2012-05-31 2013-05-21 Capacitive touch panel substrate and display device Active CN104350450B (en)

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CN104350450B (en) 2018-01-26
KR102186807B1 (en) 2020-12-04
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TW201403436A (en) 2014-01-16
KR20150027039A (en) 2015-03-11

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