CN104156127A - Touch panel - Google Patents
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- CN104156127A CN104156127A CN201310250340.5A CN201310250340A CN104156127A CN 104156127 A CN104156127 A CN 104156127A CN 201310250340 A CN201310250340 A CN 201310250340A CN 104156127 A CN104156127 A CN 104156127A
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- sensing serials
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Abstract
The invention provides a touch panel which comprises a substrate, a plurality of first sensing series and a plurality of second sensing series. The first sensing serials are arranged on the substrate. Each first sensing serial extends along a first direction and comprises a plurality of first sensing pads and a plurality of bridging structures. Each bridging structure connects two adjacent first sensing pads in series along a first direction, wherein each bridging structure comprises a conductive pattern and an optical matching pattern, and the optical matching pattern is configured on the surface of the conductive pattern facing a user so as to reduce the reflectivity of light rays in the area where the bridging structure is located in the viewing direction.
Description
Technical field
The invention relates to a kind of contact panel, and particularly relevant for a kind of contact panel that reduces the reflectivity of bridging structure.
Background technology
Fast development and application along with infotech, wireless mobile communications and information household appliances, in order to reach, carrying convenience, volume are lightly changed and object user-friendly for operation, many information products, by input medias such as traditional keyboard or mouses, change into and use contact panel as input media.
Generally speaking, contact panel mainly can be divided into electric resistance touch-control panel and capacitance type touch-control panel.Take capacitance type touch-control panel as example, existing capacitance type touch-control panel comprises substrate and is arranged at a plurality of the first sensing serials on substrate, a plurality of the second sensing serials and a plurality of insulating pattern, wherein these first sensing serials are also interlaced with each other along different direction extensions respectively from these second sensing serials, and are electrically insulated each other by being arranged at the insulating pattern of both staggered places.
Conventionally these first sensing serials and these the second sensing serials are consisted of a plurality of sensor pads and connecting portion, the application category (being for example to use with display panel collocation) of wherein considering contact panel, the material of sensor pad is selected the good electrically conducting transparent material of light transmittance conventionally.In addition, due to the connecting portion of these the first sensing serials and the connecting portion of these the second sensing serials interlaced, the connecting portion of the wherein one of these first sensing serials and these the second sensing serials need to be made to be different from the material of sensor pad.Now, such connecting portion can build bridge to form to have the good metal of conduction, and metal is built bridge to cross over insulating pattern and the sensor pad that is positioned at metal bridge formation opposite end is electrically connected.Yet, the reflectivity of building bridge due to metal, much larger than the reflectivity of the sensor pad made from electrically conducting transparent material in the first sensing serials and the second sensing serials (metal build bridge reflectivity conventionally surpass 50%), is affected the visual effect of contact panel.
Summary of the invention
The invention provides a kind of contact panel, it has good visual effect.
A kind of contact panel of the present invention, it comprises substrate, a plurality of the first sensing serials and a plurality of the second sensing serials.These first sensing serials are disposed on substrate.Each first sensing serials is extended along first direction.Each first sensing serials comprises a plurality of the first sensor pads and a plurality of bridging structure.Each bridging structure is connected in series adjacent two the first sensor pads along first direction, wherein each bridging structure comprises conductive pattern and optical match pattern, and optical match pattern is positioned at conductive pattern on user's surface, to reduce view direction glazed thread at the reflectivity of bridging structure region.These second sensing serials are electrically insulated from these the first sensing serials, and these second sensing serials are disposed on substrate, and each second sensing serials is extended along second direction, and wherein first direction and second direction are crossing.Each second sensing serials comprises a plurality of the second sensor pads and a plurality of connecting portion, and each connecting portion is connected in series adjacent two the second sensor pads along second direction.
In one embodiment of this invention, above-mentioned contact panel also comprises insulation course, and insulation course is disposed between these first sensing serials and these the second sensing serials.
In one embodiment of this invention, above-mentioned optical match pattern is between conductive pattern and substrate.
In one embodiment of this invention, the refractive index of above-mentioned optical match pattern drops in 1.5 to 2.5 scope, and the extinction coefficient of optical match pattern drops in 0.5 to 2.5 scope.
In one embodiment of this invention, the thickness of the optical match pattern of each above-mentioned bridging structure is greater than
and be less than
In one embodiment of this invention, above-mentioned contact panel also comprises the insulation course between these first sensing serials and these the second sensing serials.Be configured on substrate to these bridging structures, these first sensor pads and these the second sensor pad coplines, and these bridging structure positions, between insulation course and substrate, make each connecting portion cross over corresponding bridging structure to be electrically connected adjacent two the second sensor pads.
In one embodiment of this invention, above-mentioned contact panel also comprises delustring layer, and these first sensing serials and these the second sensing serials are between delustring layer and substrate.
In one embodiment of this invention, above-mentioned contact panel also comprises the insulation course between these first sensing serials and these the second sensing serials.Be configured on substrate to these connecting portions, these first sensor pads and these the second sensor pad coplines, and these connecting portions are between insulation course and substrate, make each bridging structure cross over corresponding connecting portion to be electrically connected adjacent two the first sensor pads.
In one embodiment of this invention, above-mentioned contact panel also comprises the delustring layer being covered on substrate, and delustring layer is between substrate and these the first sensing serials and between substrate and these the second sensing serials.
In one embodiment of this invention, the sidewall of the sidewall of the conductive pattern of each above-mentioned bridging structure and optical match pattern trims.
In one embodiment of this invention, the sidewall of the optical match pattern of each above-mentioned bridging structure is coated by conductive pattern.
In one embodiment of this invention, each above-mentioned bridging structure also comprises the protection pattern being disposed on conductive pattern, and conductive pattern is between protection pattern and optical match pattern.
In one embodiment of this invention, above-mentioned light is less than 20% at the reflectivity of bridging structure region.
In one embodiment of this invention, above-mentioned light is less than 10% at the reflectivity of bridging structure region.
In one embodiment of this invention, the material of the conductive pattern of each above-mentioned bridging structure comprise nitride, the oxide of gold, silver, copper, aluminium, chromium, platinum, rhodium, molybdenum, titanium, nickel, indium, tin or its alloy or above-mentioned metal, one of them person of oxides of nitrogen or conductive pattern by the above-mentioned at least stack layer of the two.
In one embodiment of this invention, the material of the optical match pattern of each above-mentioned bridging structure comprises the material identical with conductive pattern.
In one embodiment of this invention, the material of the optical match pattern of each above-mentioned bridging structure is oxide, nitride or the oxides of nitrogen of conductive pattern material.
In one embodiment of this invention, the thickness of the optical match pattern of each above-mentioned bridging structure is less than
In one embodiment of this invention, each above-mentioned first sensor pad is between the optical match pattern and substrate of each bridging structure.
In one embodiment of this invention, the sidewall of each above-mentioned bridging structure is covered and contacts by these first sensor pads of correspondence.
In one embodiment of this invention, the thickness of the conductive pattern of each above-mentioned bridging structure is greater than
In one embodiment of this invention, the light transmittance of the optical match pattern of each above-mentioned bridging structure is greater than the light transmittance of conductive pattern.
In one embodiment of this invention, the material of the first above-mentioned sensor pad and the second sensing serials comprises indium tin oxide, indium-zinc oxide, aluminium tin-oxide, aluminium zinc oxide, indium germanium zinc oxide, grid-shaped metal or the above-mentioned at least stack layer of the two.
In one embodiment of this invention, above-mentioned these the first sensor pad and these the second sensing serials comprise respectively grid-shaped metal layer and optical match layer, and optical match layer is positioned at grid-shaped metal aspect on user's surface.
In one embodiment of this invention, the peripheral region that above-mentioned substrate has Touch Zone and is positioned at least one side of Touch Zone, and contact panel also comprises decorative layer, wherein decorative layer is positioned at peripheral region.
In one embodiment of this invention, above-mentioned decorative layer is positioned at a side identical with these first sensing serials and these the second sensing serials on substrate.
In one embodiment of this invention, above-mentioned decorative layer is positioned at a side relative with these first sensing serials and these the second sensing serials on substrate.
Based on above-mentioned, contact panel of the present invention is realized the bridging structure of sensing serials and by optical match pattern being set at conductive pattern on user's surface, is reduced view direction glazed thread at the reflectivity of this bridging structure region with conductive pattern and optical match pattern.Thus, can make contact panel have good visual effect, namely user is not easy to discover the profile that bridge joint connects structure.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate accompanying drawing to be described in detail below.
Accompanying drawing explanation
Fig. 1 looks schematic diagram on a kind of part of contact panel of the first embodiment of the present invention;
Fig. 2 A and Fig. 2 B are respectively the diagrammatic cross-sections of Fig. 1 Vertical Centre Line A-A ' and hatching line B-B ';
Fig. 3 A and Fig. 3 B are the diagrammatic cross-sections of a kind of contact panel of the second embodiment of the present invention;
Fig. 4 looks schematic diagram on a kind of part of contact panel of the third embodiment of the present invention;
Fig. 5 A and Fig. 5 B are respectively the diagrammatic cross-sections of Fig. 4 Vertical Centre Line C-C ' and hatching line D-D ';
Fig. 6 A and Fig. 6 B are the diagrammatic cross-sections of a kind of contact panel of the fourth embodiment of the present invention;
Fig. 7 A and Fig. 7 B are the diagrammatic cross-sections of a kind of contact panel of the fifth embodiment of the present invention;
Fig. 8 looks schematic diagram on the part of contact panel of sixth embodiment of the invention.
Description of reference numerals:
100,400,800: contact panel;
110,810: substrate;
120,420,820: the first sensing serials;
122,422: the first sensor pads;
124,424: bridging structure;
124a, 424a: conductive pattern;
124b, 424b: optical match pattern;
124c, 424c: protection pattern;
130,430,830: the second sensing serials;
132,432: the second sensor pads;
134,434: connecting portion;
140,440,840: insulation course;
150,450: delustring layer;
850: decorative layer;
D1: first direction;
D2: second direction;
G: gap;
Ha, Hb, Hc: thickness;
L: light;
A1: Touch Zone;
A2: peripheral region;
A-A ', B-B ', C-C ', D-D ': hatching line.
Embodiment
Fig. 1 looks schematic diagram on a kind of part of contact panel of the first embodiment of the present invention.Fig. 2 A and Fig. 2 B are respectively the diagrammatic cross-sections of Fig. 1 Vertical Centre Line A-A ' and hatching line B-B '.Please refer to Fig. 1, the contact panel 100 of the present embodiment comprises substrate 110, a plurality of the first sensing serials 120 and a plurality of the second sensing serials 130.
In the present embodiment, these first sensing serials 120 and these the second sensing serials 130 are disposed on the same surface of substrate 110, wherein the material of substrate 110 can be glass, sapphire glass, polyethylene terephthalate (polyethylene terephthalate, hereinafter to be referred as PET), polymethylmethacrylate (polymethylmethacrylate, hereinafter to be referred as PMMA), carbonic allyl ester (propylene carbonate, hereinafter to be referred as PC), triacetyl cellulose (cellulose triacetate, hereinafter to be referred as TAC) or by the stacking substrate forming of said two devices.
In addition, each first sensing serials 120 is extended and is electrically insulated each other along first direction D1.Each second sensing serials 130 is extended and is electrically insulated each other along second direction D2, and wherein first direction D1 and second direction D2 are crossing, and the first direction D1 of the present embodiment is for example perpendicular to second direction D2, but the invention is not restricted to this.
Particularly, each first sensing serials 120 comprises a plurality of the first sensor pads 122 and a plurality of bridging structure 124, and wherein each bridging structure 124 is connected in series adjacent two the first sensor pads 122 along first direction D1.Each second sensing serials 130 comprises a plurality of the second sensor pads 132 and a plurality of connecting portion 134, and each connecting portion 134 is connected in series adjacent two the second sensor pads 132 along second direction D2.
In the present embodiment, contact panel 100 can further comprise insulation course 140.Insulation course 140 is disposed between these first sensing serials 120 and these the second sensing serials 130, so that these first sensing serials 120 are electrically insulated each other with these second sensing serials 130.Particularly, the insulation course 140 of the present embodiment for example comprises the insulation system of a plurality of islands, and these insulation systems are disposed between bridging structure interlaced with each other 124 and corresponding connecting portion 134, but the present invention is not in order to limit the shape of insulation course 140.In other embodiments, insulation course 140 can be also the insulation system of strip or be covered in by entire surface in Touch Zone (being the region at these first sensing serials 120 and these the second sensing serials 130 places).In addition, the material of the insulation course 140 of the present embodiment is for example organic material or transparent photoresistance, and its refractive index approximately drops in 1.5 to 1.9 scope, and its thickness approximately drops on 1um (micron) to the scope of 2um.
Please refer to Fig. 1, Fig. 2 A and Fig. 2 B, in the present embodiment, the order that forms these first sensing serials 120, these second sensing serials 130 and insulation course 140 on substrate 110 is for example each bridging structure 124 that first forms the first sensing serials 120, connect and form insulation course 140, finally forming the first sensor pad 122 and second sensing serials 130 of these the first sensing serials 120.
In other words, the first sensor pad 122 of first sensing serials 120 of the present embodiment can be form simultaneously and can have identical material with the second sensor pad 132 of the second sensing serials 130 and connecting portion 134, and the second sensor pad 132 of the second sensing serials 130 and connecting portion 134 are for example integrally formed.For example, the material of the first sensor pad 122 and the second sensing serials 130 can be metal oxide or grid-shaped metal or the above-mentioned at least stack layer of the two that indium tin oxide, indium-zinc oxide, aluminium tin-oxide, aluminium zinc oxide, indium germanium zinc oxide etc. can conduct electricity and light transmittance is good.In the present embodiment, the material of the first sensor pad 122 and the second sensing serials 130 illustrates with the metal oxide that can conduct electricity and light transmittance is good.
On the other hand, each bridging structure 124 of first sensing serials 120 of the present embodiment and the first sensor pad 122 and the second sensing serials 130 are for form simultaneously, and the material of each bridging structure 124 is different from the material of the first sensor pad 122.For example, the material of each bridging structure 124 can be the good metal material of conduction.
Furthermore, be configured on substrate 110 to these bridging structures 124 of the present embodiment, these first sensor pads 122 and these the second sensor pad 132 coplines, and 124 of these bridging structures, between these insulation courses 140 and substrate 110, make each connecting portion 134 cross over corresponding bridging structure 124 to be electrically connected adjacent two the second sensor pads 132.In addition, the sidewall of each bridging structure 124 is covered and contacts (as shown in Figure 2 A) by these the first sensor pads 122 of correspondence, and the sidewall of the insulation system of each island (insulation course 140) is covered and contact (as shown in Figure 2 B) by these connecting portions 134 of correspondence.
In the present embodiment, each bridging structure 124 comprises conductive pattern 124a and optical match pattern 124b, wherein optical match pattern 124b configuration conductive pattern 124a is on user's surface, to reduce view direction glazed thread L at the reflectivity of bridging structure 124 regions.In the present embodiment, user carries out touch-control from the outside surface of substrate 110, and the outside surface (surface relative with said elements configuration plane) that is to say substrate 110 is touch surface.Therefore, the optical match pattern 124b of the present embodiment is for example between conductive pattern 124a and substrate 110.In other embodiments, when user is while carrying out touch-control by a side of said elements configuration plane, by conductive pattern 124a being arranged between optical match pattern 124b and substrate 110, (make optical match pattern 124b be positioned at conductive pattern 124a on user's surface), reduce view direction glazed thread L at the reflectivity of bridging structure 124 regions.
In addition, the optical match pattern 124b of the present embodiment has identical in fact profile with conductive pattern 124a.Particularly, the sidewall of the conductive pattern 124a of each bridging structure 124 is for example to trim with the sidewall of optical match pattern 124b.
In the prior art, with metal material, make the bridging structure that connects two adjacent sensor pads, and this metal bridge connecting structure is built bridge also referred to as metal.The reflectivity that metal is built bridge is high, causes light to be reflected in metal bridge formation place major part, and causes the visual effect of contact panel bad (being for example to see bright spot in the region at metal bridge formation place).By contrast, the present embodiment can be by arranging optical match pattern 124b between conductive pattern 124a and substrate 110, utilizes the mating of refractive index of conductive pattern 124a and optical match pattern 124b, in order to reduce the reflectivity of conductive pattern 124a region.
Particularly, conductive pattern 124a is made by metal, and has low light transmittance.The light transmittance of the optical match pattern 124b of each bridging structure 124 is relatively greater than the light transmittance of conductive pattern 124a.Therefore, when light L by substrate 110 when the first sensing serials 120 is irradiated, light L can and expose to conductive pattern 124a through optical match pattern 124b.That is to say, optical match pattern 124b not is deliberately used for stopping the member of light L, but the member that can allow light L to pass through.In addition, the conductive pattern 124a making due to metal material can be considered a reflecting surface, so light L is not easy by conductive pattern 124a, and is subject to stopping of conductive pattern 124a.Thus, the present embodiment can consider to be positioned at the reflex that conductive pattern 124a top rete causes light L, and can only consider to be positioned at the reflectivity of the optical match pattern 124b between substrate 110 and conductive pattern 124a, judge the visual effect at bridging structure 124 places, positions.
Specifically, by following reflectance formula (comprising formula 1, formula 2 and formula 3), the present embodiment can be derived ranges of indices of refraction and the extinction coefficient scope of optical match pattern 124b, with so that light L by substrate 110 when the first sensing serials 120 is irradiated, the reflectivity of light L in bridging structure 124 regions be approximately identical to light L at bridging structure 124 reflectivity with exterior domain.
N
1=n
1+ ik
1(formula 3)
Wherein, R is reflectivity, r
01for the reflection coefficient of light L at substrate 110 and optical match pattern 124b intersection, r
12for the reflection coefficient of light L at optical match pattern 124b and conductive pattern 124a intersection, λ is the wavelength of light L, d
1for the thickness of optical match pattern 124b, n
1for the refractive index of optical match pattern 124b, and k
1extinction coefficient for optical match pattern 124b.
Via analog result, in the refractive index of optical match pattern 124b drops on 1.5 to 2.5 scope, and the extinction coefficient of optical match pattern 124b drops in 0.5 to 2.5 scope etc. under condition, light L can be less than 20% at the reflectivity of bridging structure 124 regions.Moreover, under these conditions, if the thickness Hb of the optical match pattern 124b of each bridging structure 124 is greater than
and be less than
light L further can be reduced to below 10% at the reflectivity of bridging structure 124 regions.That is to say, the present embodiment can mate with thickness with refractive index, the extinction coefficient of optical match pattern 124b by conductive pattern 124a, reduce the reflectivity of conductive pattern 124a (bridging structure 124) region, and make light L by substrate 110 when the first sensing serials 120 is irradiated, the reflectivity of light L in bridging structure 124 regions be approximately identical to light L at bridging structure 124 reflectivity with exterior domain.Thus, can make the contact panel 100 of the present embodiment there is good visual effect.
In the present embodiment, conductive pattern 124a can be single layer structure.The material of described single layer structure can be selected from nitride, oxide, the oxides of nitrogen of gold, silver, copper, aluminium, chromium, platinum, rhodium, molybdenum, titanium, nickel, indium, tin or its alloy or above-mentioned metal.Or conductive pattern 124a can be multiple-level stack layer, and these a little stack layers have different materials, and these materials can be selected from the material of above-mentioned single layer structure.On the other hand, the material of the optical match pattern 124b of each bridging structure 124 can be selected the material identical with above-mentioned single layer structure.Yet, the material of optical match pattern 124b need have different mixing ratios from the material of conductive pattern 124a, to there is different refractive indexes, under matching in order to the refractive index at both, reduce the reflectivity of conductive pattern 124a (bridging structure 124) region.
For example, at general bridging structure, be under the structure of molybdenum aluminium molybdenum or aluminium molybdenum, light L at the reflectivity of bridging structure up to 50～90%.By contrast, for example, if the design that adopts the present embodiment changes the molybdenum that approaches user in molybdenum aluminium molybdenum or aluminium molybdenum structure most to take optical match pattern oxide, nitride or the oxides of nitrogen of molybdenum (as) while configuring, light L will reduce to below 20% at the reflectivity of bridging structure 124, or under the structure of molybdenum aluminium molybdenum or aluminium molybdenum structure, on the molybdenum that approaches most user, configure optical match pattern (being for example the oxide of molybdenum, nitride or oxides of nitrogen), reflectivity can be reduced to below 10% more again.In addition, consider the electric conductivity of conductive pattern 124a, so that contact panel 100 maintains certain sensing sensitivity, the thickness Ha of conductive pattern 124a is for example greater than
and the thickness Hb of optical match pattern 124b is for example less than
In addition, each bridging structure 124 of the present embodiment can further comprise the protection pattern 124c being disposed on conductive pattern 124a.That is to say, conductive pattern 124a is between protection pattern 124c and optical match pattern 124b.Protection pattern 124c can be used for protecting conductive pattern 124a, increases the structural strength of bridging structure 124 and avoid conductive pattern 124a oxidation etc.In addition, protection pattern 124c can also be used to increase the tack between conductive pattern 124a and insulation course 140.Therefore, the material of the better adhesion effect of the protection optional apparatus of pattern 124c, for example, be the material of aforementioned optical match pattern 124b.In addition, the thickness Hc of protection pattern 124c is for example less than
It should be noted that, the design concept of the conductive pattern 124a in above-mentioned bridging structure 124 and optical match pattern 124b is also applicable to the first sensor pad 122 and the second sensing serials 130.Particularly, in other embodiments, when the material of the first sensor pad 122 and the second sensing serials 130 adopt be the relatively high grid-shaped metal of reflectivity time, these first sensor pads 122 and these the second sensing serials 130 can further comprise optical match layer.Namely, these first sensor pads 122 and these the second sensing serials 130 comprise respectively grid-shaped metal layer and optical match layer, and optical match layer is positioned at grid-shaped metal aspect on user's surface.Thus, by grid-shaped metal layer, mate with thickness with refractive index, the extinction coefficient of optical match layer, can reduce view direction glazed thread at the reflectivity of grid-shaped metal layer region, and make contact panel there is good visual effect.
On the other hand, except metal, build bridge and can affect the visual effect of contact panel, these first sensing serials 120 also may affect the visual effect of contact panel with the profile of these the second sensing serials 130.Therefore, in another embodiment, as shown in Fig. 3 A and Fig. 3 B, aforesaid contact panel 100 also can further comprise delustring layer 150.Fig. 3 A and Fig. 3 B are the diagrammatic cross-sections of a kind of contact panel of the second embodiment of the present invention.Please refer to Fig. 3 A and Fig. 3 B, delustring layer 150 is for example on the Touch Zone (i.e. the region at the first sensing serials 120 and the second sensing serials 130 places) that is covered in all sidedly contact panel 100, and these of the present embodiment the first sensing serials 120 and these the second sensing serials 130 are for example between delustring layer 150 and substrate 110, but the invention is not restricted to this.In other embodiments, delustring layer 150 can be to be also covered on substrate 110, and between substrate 110 and these the first sensing serials 120 and substrate 110 and these the second sensing serials 130.In addition, the material of delustring layer 150 can be general insulation material, as the stack layer of monox, silicon nitride, silicon oxynitride, sieve and silica-sesquioxide or above-mentioned at least two kinds of materials.
By the setting of delustring layer 150, the clearance G (please refer to Fig. 1) of light L between sensor pad (comprising the first sensor pad 122 and the second sensor pad 132) can obtain compensation with sensing serials (referring to the first sensing serials 120 and the second sensing serials 130) difference in reflectivity between the two.Thus, can reduce the profile of each sensing serials 120 and 130 for the visuality of human eye, and further promote the visual effect of contact panel 100.Working as the first sensor pad 122 and the second sensing serials 130 is in addition grid-shaped metals, for example when being formed with the identical material of conductive pattern, can on the first sensor pad 122 and the corresponding view direction of the second sensing serials 130, (namely between user and the first sensor pad 122 and the second sensing serials 130) configure above-mentioned optical match pattern equally, to reduce the reflectivity of contact panel.
Fig. 4 looks schematic diagram on a kind of part of contact panel of the third embodiment of the present invention.Fig. 5 A and Fig. 5 B are respectively the diagrammatic cross-sections of Fig. 4 Vertical Centre Line C-C ' and hatching line D-D '.Please refer to Fig. 4, Fig. 5 A and Fig. 5 B, the contact panel 400 of the present embodiment and aforementioned contact panel 100 have similar rete, similar material and similar effect.Both difference is mainly, these first sensing serials 420 of contact panel 400, the formation of these second sensing serials 430 and insulation course 440 is sequentially: the first sensor pad 422 and these the second sensing serials 430 that first form these the first sensing serials 420, connect and form insulation course 440, finally form each bridging structure 424 of the first sensing serials 420, above-mentioned the first sensing serials 420 wherein, the second sensing serials 430, the material of insulation course 440 and structure can be with reference to the first sensing serials 120 of aforementioned contact panel 100, the second sensing serials 130, the material of insulation course 140 and structure, at this, just repeat no more.
Furthermore, these connecting portions 434 of the present embodiment, these first sensor pads 422 and these the second sensor pad 432 coplines, and 434 of these connecting portions, between insulation course 440 and substrate 110, make each bridging structure 424 cross over corresponding connecting portion 434 to be electrically connected adjacent two the first sensor pads 422.That is to say, the subregion of each connecting portion 434 of the present embodiment is covered by corresponding bridging structure 424.(as shown in Figure 5 B).In addition, the subregion of each first sensor pad 422 is between the optical match pattern 424b of each bridging structure 424 and substrate 110 (as shown in Figure 5A).
In addition, the optical match pattern 424b of each bridging structure 424 of the present embodiment has identical in fact profile with conductive pattern 424a.Particularly, the sidewall of the conductive pattern 424a of each bridging structure 424 is for example to trim with the sidewall of optical match pattern 424b, but the invention is not restricted to this.In another embodiment, as shown in Fig. 6 A and 6B, the sidewall of the optical match pattern 424b of each bridging structure 424 also can be coated by conductive pattern.Fig. 6 A and Fig. 6 B are the diagrammatic cross-sections of a kind of contact panel of the fourth embodiment of the present invention, the difference of Fig. 5 A, Fig. 5 B and Fig. 6 A, Fig. 6 B is whether the optical match pattern 424b of each bridging structure 424 and conductive pattern 424a are that patterning forms simultaneously, and the present invention is not for example, in order to limit the method for making (processing the number of number) of each bridging structure 424.
In the embodiment of Fig. 5 A, Fig. 5 B and Fig. 6 A, Fig. 6 B, by the setting of optical match pattern 424b, and under the design of above-mentioned parameter, (the thickness Hb that refers to each optical match pattern 424b is greater than
and be less than
and refractive index drops in 1.5 to 2.5 scope, and extinction coefficient drops in 0.5 to 2.5 scope), light L also can be less than 20% at the reflectivity of bridging structure 424 regions.That is to say, the present embodiment also can mate with thickness with refractive index, the extinction coefficient of optical match pattern 424b by conductive pattern 424a, reduce the reflectivity of conductive pattern 424a (bridging structure 124) region, and make light L by substrate 110 when the first sensing serials 420 is irradiated, light L significantly reduces at the reflectivity of bridging structure 424 regions.Thus, can make the contact panel 400 of the present embodiment there is good visual effect.
In addition; the bridging structure 424 of contact panel 400 can further comprise the protection pattern 424c being disposed on conductive pattern 424a, be used for protecting conductive pattern 424a, increase bridging structure 424 structural strength, avoid conductive pattern 424a oxidation (protecting pattern 424c directly to contact with insulation course 440) herein.The material of protection pattern 424c and thickness Hc can be identical with material and the thickness Hc of protection pattern 124c in Fig. 2 A and Fig. 2 B, at this, just repeat no more.
In addition, as shown in Fig. 7 A and Fig. 7 B, in another embodiment, contact panel 400 can further comprise the delustring layer 450 being covered on substrate 110.Fig. 7 A and Fig. 7 B are the diagrammatic cross-sections of a kind of contact panel of the fifth embodiment of the present invention.Please refer to Fig. 7 A and Fig. 7 B, the delustring layer 450 of the present embodiment is between substrate 110 and these the first sensing serials 420 and between substrate 110 and these the second sensing serials 430.Yet, in other embodiments, delustring layer 450 also can cover in these first sensing serials 420 and these the second sensing serials 430, and makes these first sensing serials 420 and these the second sensing serials 430 between delustring layer 450 and substrate 110.
By the setting of delustring layer 450, the clearance G (please refer to Fig. 4) of light L between sensor pad (comprising the first sensor pad 422 and the second sensor pad 432) can obtain compensation with sensing serials (referring to the first sensing serials 420 and the second sensing serials 430) difference in reflectivity between the two.Thus, can reduce each sensing serials for the visuality of human eye, and further promote the visual effect of contact panel 400.
Fig. 8 looks schematic diagram on the part of contact panel of sixth embodiment of the invention.Please refer to Fig. 8, the contact panel 800 of the present embodiment comprises substrate 810, a plurality of the first sensing serials 820 and a plurality of the second sensing serials 830, and wherein substrate 810 can be used as cover plate (cover lens) use.That is to say, when practical operation, these first sensing serials 820, these second sensing serials 830 and insulation course 840 are positioned at the inside surface of substrate 810, and user's touching is the outside surface of substrate 810.Particularly, the peripheral region A2 that substrate 810 has Touch Zone A1 and is positioned at least one side of Touch Zone A1, and these first sensing serials 820 and these the second sensing serials 830 are positioned at Touch Zone A1.In the present embodiment, these first sensing serials 820 and these the second sensing serials 830 can adopt the configuration relation of aforementioned the first embodiment to the five embodiment similar member in any one, and the contact panel 800 of the present embodiment can further comprise insulation course 840 so that these first sensing serials 820 are electrically insulated with these second sensing serials 830.Moreover the contact panel 800 of the present embodiment also optionally comprises that aforesaid delustring layer is to promote the visual effect of contact panel 800.
Be with the difference of aforementioned the first embodiment to the five embodiment, the contact panel 800 of the present embodiment also comprises decorative layer 850, and wherein decorative layer 850 is positioned at peripheral region A2.Particularly, decorative layer 850 power are covered the shading element (not shown) that is positioned at peripheral region A2 as tried out.In other embodiments, in peripheral region A2, also touch control component can be optionally optionally set.
In the present embodiment, decorative layer 850 is for example positioned at a side identical with these first sensing serials 820 and these the second sensing serials 830 on substrate 810.That is to say, the decorative layer 810 of the present embodiment, these first sensing serials 820 and these the second sensing serials 830 are positioned on the same surface (inside surface) of substrate 810.Yet, in other embodiments, decorative layer 850 also can be arranged on a side relative with these first sensing serials 820 and these the second sensing serials 830 on substrate 810, and namely decorative layer 850 also can be positioned on the outside surface (touch surface) of substrate 810.In addition, in other embodiments, contact panel 800 can further comprise that a board (not indicating) is arranged on a side relative with these first sensing serials 820 and these the second sensing serials 830 on substrate 810, namely board is configured on the outside surface (touch surface) of substrate 810, and decorative layer 850 is for example arranged on board and between substrate 810 and board, wherein the orthogonal projection of decorative layer 850 on substrate 810 is positioned at the peripheral region A2 of substrate 810.
In sum, contact panel of the present invention is realized the bridging structure of sensing serials with conductive pattern and optical match pattern and by optical match pattern being set at conductive pattern on user's surface, reduce view direction glazed thread at the reflectivity of bridging structure region, and then allow user be not easy to discover the profile that bridge joint connects structure, and make contact panel there is good visual effect.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (28)
1. a contact panel, is characterized in that, comprising:
One substrate;
A plurality of the first sensing serials, be disposed on this substrate, respectively this first sensing serials is extended along a first direction, respectively this first sensing serials comprises a plurality of the first sensor pads and a plurality of bridging structure, respectively this bridging structure is connected in series adjacent two the first sensor pads along this first direction, wherein respectively this bridging structure comprises a conductive pattern and an optical match pattern, and this optical match pattern arrangement is between user and conductive pattern, to reduce view direction glazed thread at the reflectivity of this bridging structure region; And
A plurality of the second sensing serials, be electrically insulated from those the first sensing serials, and those second sensing serials are disposed on this substrate, respectively this second sensing serials is extended along a second direction, this first direction and this second direction intersect, respectively this second sensing serials comprises a plurality of the second sensor pads and a plurality of connecting portion, and respectively this connecting portion is connected in series adjacent two the second sensor pads along this second direction.
2. contact panel according to claim 1, is characterized in that, also comprises an insulation course, and this insulation course is disposed between those first sensing serials and those the second sensing serials.
3. contact panel according to claim 1, is characterized in that, this optical match pattern is between this conductive pattern and this substrate.
4. contact panel according to claim 1, is characterized in that, the refractive index of this optical match pattern drops in 1.5 to 2.5 scope, and respectively the extinction coefficient of this optical match pattern drops in 0.5 to 2.5 scope.
5. contact panel according to claim 4, is characterized in that, the thickness of this optical match pattern of each bridging structure is greater than
and be less than
6. contact panel according to claim 1, it is characterized in that, also comprise an insulation course, be disposed between those first sensing serials and those the second sensing serials, be configured on this substrate to those bridging structures, those first sensor pads and those the second sensor pad coplines, and those bridging structure positions, between this insulation course and this substrate, make respectively this connecting portion cross over this corresponding bridging structure to be electrically connected adjacent two the second sensor pads.
7. contact panel according to claim 1, is characterized in that, also comprises a delustring layer, and those first sensing serials and those the second sensing serials are between this delustring layer and this substrate.
8. contact panel according to claim 1, it is characterized in that, also comprise an insulation course, this insulation course is disposed between those first sensing serials and those the second sensing serials, be configured on this substrate to those connecting portions, those first sensor pads and those the second sensor pad coplines, and those connecting portions, between this insulation course and this substrate, make respectively this bridging structure cross over this corresponding connecting portion to be electrically connected adjacent two the first sensor pads.
9. contact panel according to claim 1, is characterized in that, also comprises a delustring layer, be covered on this substrate, and between this substrate and those the first sensing serials and between this substrate and those the second sensing serials.
10. contact panel according to claim 1, is characterized in that, respectively the sidewall of the sidewall of this conductive pattern of this bridging structure and this optical match pattern trims.
11. contact panels according to claim 1, is characterized in that, respectively the sidewall of this optical match pattern of this bridging structure is coated by this conductive pattern.
12. contact panels according to claim 1, is characterized in that, respectively this bridging structure also comprises a protection pattern, be disposed on this conductive pattern, and this conductive pattern are between this protection pattern and this optical match pattern.
13. contact panels according to claim 1, is characterized in that, this light is less than 20% at the reflectivity of this bridging structure region.
14. contact panels according to claim 1, is characterized in that, this light is less than 10% at the reflectivity of this bridging structure region.
15. contact panels according to claim 1, it is characterized in that, respectively the material of this conductive pattern of this bridging structure comprises nitride, the oxide of gold, silver, copper, aluminium, chromium, platinum, rhodium, molybdenum, titanium, nickel, indium, tin or its alloy or above-mentioned metal, one of them person or the above-mentioned at least stack layer of the two of oxides of nitrogen.
16. contact panels according to claim 1, is characterized in that, respectively the material of this optical match pattern of this bridging structure comprises the material identical with this conductive pattern.
17. contact panels according to claim 1, is characterized in that, respectively the material of this optical match pattern of this bridging structure is oxide, nitride or the oxides of nitrogen of this conductive pattern material.
18. contact panels according to claim 1, is characterized in that, respectively the thickness of this optical match pattern of this bridging structure is less than
19. contact panels according to claim 1, is characterized in that, respectively this first sensor pad is between this optical match pattern and this substrate of this bridging structure respectively.
20. contact panels according to claim 1, is characterized in that, respectively the sidewall of this bridging structure is covered and contacts by those first sensor pads of correspondence.
21. contact panels according to claim 1, is characterized in that, respectively the thickness of this conductive pattern of this bridging structure is greater than
22. contact panels according to claim 1, is characterized in that, respectively the light transmittance of this optical match pattern of this bridging structure is greater than the light transmittance of this conductive pattern.
23. contact panels according to claim 1, it is characterized in that, the material of this first sensor pad and the second sensing serials comprises indium tin oxide, indium-zinc oxide, aluminium tin-oxide, aluminium zinc oxide, indium germanium zinc oxide, grid-shaped metal or the above-mentioned at least stack layer of the two.
24. contact panels according to claim 1, it is characterized in that, those first sensor pads and those the second sensing serials comprise respectively a grid-shaped metal layer and an optical match layer, and this optical match layer is positioned at this grid-shaped metal aspect on user's surface.
25. contact panels according to claim 1, is characterized in that, this substrate has the peripheral region that a Touch Zone and is positioned at least one side of this Touch Zone, and this contact panel also comprises a decorative layer, and this decorative layer is positioned at this peripheral region.
26. contact panels according to claim 25, is characterized in that, this decorative layer is positioned at a side identical with those first sensing serials and those the second sensing serials on this substrate.
27. contact panels according to claim 25, is characterized in that, this decorative layer is positioned at a side relative with those first sensing serials and those the second sensing serials on this substrate.
28. contact panels according to claim 25, it is characterized in that, also comprise a board, this board is positioned at a side relative with those first sensing serials and those the second sensing serials on this substrate, and this decorative layer is disposed on this board, and between this substrate and this board, wherein the orthogonal projection of this decorative layer on this substrate is positioned at this peripheral region.
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| TW102116922 | 2013-05-13 | ||
| TW102116922 | 2013-05-13 |
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| CN111902800A (en) * | 2018-03-23 | 2020-11-06 | 阿尔卑斯阿尔派株式会社 | Input device and display device with input device |
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Application publication date: 20141119 |