TW201531890A - Touch device - Google Patents

Abstract

A touch device includes a first substrate and a first patterned composite material conductive layer. The first patterned composite material conductive layer is disposed on the first substrate. The first patterned composite material conductive layer includes a first multilayer structure. The first multilayer structure includes a first metal conductive layer, a first transparent conductive layer and a second metal conductive layer sequentially disposed on the first substrate in a stacked configuration. The first transparent conductive layer is disposed between the first metal conductive layer and the second metal conductive layer so as to form an optical microcavity between the first metal conductive layer and the second metal conductive layer.

Description

Touch device

The present invention relates to a touch device, and more particularly to a touch device that achieves the purpose of reducing electrical impedance and improving transmittance by using a patterned composite conductive layer having a transparent conductive layer sandwiched between two metal conductive layers.

In the structure of the touch panel, in order to prevent the touch sensing component from affecting the display effect matched by the touch panel, a transparent conductive material having low resistance and high light transmittance is generally used to form the touch sensing element. At present, the more common transparent conductive material in the industry is indium tin oxide (ITO). Although indium tin oxide has high light transmittance, its resistance value is still higher than that of general metal conductive materials, which makes the design limited. In addition, in a general touch panel, a metal bridge wire is used to connect the touch sensing element formed of a transparent conductive material, thereby reducing the overall electrical impedance. However, this metal bridge wiring has a poor transmittance due to its low transmittance and reflective characteristics, which may cause adverse effects on the visual appearance of the touch panel. In order to reduce the electrical impedance of the touch sensing element, a metal mesh is also proposed in the industry to form a touch sensing element, but the metal material forming the metal mesh itself has low transmittance and high reflectivity. Therefore, it will also cause adverse effects on the visual appearance of the appearance.

One of the main purposes of the present invention is to provide a touch device that utilizes a patterned composite conductive layer having a transparent conductive layer sandwiched between two metal conductive layers to reduce electrical impedance and enhance transmittance.

To achieve the above objective, a preferred embodiment of the present invention provides a touch device including a first substrate and a first patterned composite conductive layer. The first patterned composite conductive layer is disposed on the first substrate. The first patterned composite conductive layer includes a first multilayer structure, and the first multilayer structure includes a first metal conductive layer, a first transparent conductive layer, and a second metal conductive layer sequentially stacked on the first substrate. on. The first transparent conductive layer is disposed between the first metal conductive layer and the second metal conductive layer to form an optical micro-resonant cavity between the first metal conductive layer and the second metal conductive layer.

The touch device of the present invention uses a two-metal conductive layer to sandwich a patterned conductive material conductive layer of a transparent conductive layer to form a touch electrode or/and a connecting wire, and uses two metal conductive layers to reduce the overall electrical resistance and the two metals. An optical micro-resonance cavity is formed between the conductive layers to achieve the effect of improving the transmittance.

101-106‧‧‧ touch device

111‧‧‧First substrate

111A‧‧‧ first side

111B‧‧‧ second side

112‧‧‧second substrate

112A‧‧‧ third side

112B‧‧‧ fourth side

120‧‧‧First patterned composite conductive layer

120C‧‧‧First connecting wire

120M‧‧‧ grid pattern

120R‧‧‧ touch signal receiving electrode

120S‧‧‧first touch electrode

120T‧‧‧ touch signal drive electrode

121‧‧‧First metal conductive layer

122‧‧‧First transparent conductive layer

123‧‧‧Second metal conductive layer

124‧‧‧First optical layer

125‧‧‧Second optical layer

141, 142‧‧ ‧ protective layer

190‧‧‧ Covering board

201-202‧‧‧ touch device

220‧‧‧Second patterned composite conductive layer

220S‧‧‧second touch electrode

221‧‧‧ Third metal conductive layer

222‧‧‧Second transparent conductive layer

223‧‧‧4th metal conductive layer

224‧‧‧ Third optical layer

225‧‧‧The fourth optical layer

230‧‧‧Insulation

241‧‧‧First axial electrode

241C‧‧‧First connecting wire

241X‧‧‧Subelectrode

242‧‧‧Second axial electrode

301-302‧‧‧ touch device

351‧‧‧First touch electrode

352‧‧‧Second touch electrode

M1‧‧‧hexagonal grid unit

M2‧‧‧Rectangular grid unit

M3‧‧‧Rhombus grid unit

R1‧‧‧Light transmission area

R2‧‧‧ surrounding area

S1‧‧‧ first multi-layer structure

S2‧‧‧Second multilayer structure

X‧‧‧ first direction

Y‧‧‧second direction

Z‧‧‧Vertical projection direction

FIG. 1 is a schematic view of a touch device according to a first embodiment of the present invention.

2 to 4 are schematic views showing a grid pattern of the touch device according to the first embodiment of the present invention.

FIG. 5 is a schematic diagram of a touch electrode of the touch device according to the first embodiment of the present invention.

FIG. 6 is a schematic diagram of a touch device according to a second embodiment of the present invention.

FIG. 7 is a schematic diagram of a touch device according to a third embodiment of the present invention.

FIG. 8 is a schematic diagram of a touch device according to a fourth embodiment of the present invention.

FIG. 9 is a schematic diagram of a touch device according to a fifth embodiment of the present invention.

FIG. 10 is a schematic diagram of a touch device according to a sixth embodiment of the present invention.

11 is a schematic view of a touch device according to a seventh embodiment of the present invention.

Fig. 12 is a schematic cross-sectional view taken along line A-A' of Fig. 11.

FIG. 13 is a schematic view showing a touch device according to an eighth embodiment of the present invention.

FIG. 14 is a schematic view showing a touch device according to a ninth embodiment of the present invention.

FIG. 15 is a schematic top plan view of a touch device according to a ninth embodiment of the present invention.

FIG. 16 is a schematic diagram of a touch device according to a tenth embodiment of the present invention.

The present invention will be described in detail with reference to the preferred embodiments of the invention,

Please refer to Figure 1. FIG. 1 is a schematic view of a touch device according to a first embodiment of the present invention. For the convenience of description, the drawings of the present invention are only for the purpose of understanding the present invention, and the detailed proportions thereof can be adjusted according to the design requirements. As shown in FIG. 1 , the embodiment provides a touch device 101 . The touch device 101 includes a first substrate 111 and a first patterned composite conductive layer 120. The first substrate 111 includes a glass substrate, a plastic substrate, a glass film, a plastic film, a cover plate or a display substrate. The cover plate is provided with a decorative layer on at least one side, and the substrate of the display may include a color filter substrate, an active array substrate or a package cover of an organic light emitting display, but is not limited thereto. The first patterned composite conductive layer 120 is disposed on the first substrate 111. The first patterned composite conductive layer 120 has a first multilayer structure S1. The first multilayer structure S1 includes a first metal conductive layer 121, a first transparent conductive layer 122, and a second metal conductive layer 123. The stack is disposed on the first substrate 111. For example, the first substrate 111 of the embodiment may have a first surface 111A and a second surface 111B. The second surface 111B is perpendicular to the first surface 111A of the vertical projection direction Z of a vertical first substrate 111. On the other hand, the first metal conductive layer 121, the first transparent conductive layer 122, and the second metal conductive layer 123 are sequentially stacked on the first surface 111A of the first substrate 111. That is, the first metal conductive layer 121 is disposed between the first transparent conductive layer 122 and the first substrate 111, and the first transparent conductive layer 122 is disposed on the first metal conductive layer 121 and the second metal conductive layer 123. between. The first transparent conductive layer 122 directly contacts the first metal conductive layer 121 and the second metal conductive layer 123, respectively, that is, the thickness of the first transparent conductive layer 122 is substantially equal to the first metal conductive layer 121 and the second metal. The spacing of the conductive layers 123 in the vertical projection direction Z. Therefore, the thickness of the first transparent conductive layer 122 is substantially controlled between 500 nm and 40 nm, and an optical micro-resonance cavity can be formed between the first metal conductive layer 121 and the second metal conductive layer 123 ( Optical microcavity), by which the optical microcavity can increase the transmittance of light passing through the first patterned composite conductive layer 120 in a specific wavelength range (for example, visible light having an average wavelength of about 550 nm).

Further, the first metal conductive layer 121 and the second metal conductive layer 123 of the present embodiment may preferably include silver or a silver alloy, thereby reducing the overall electrical impedance of the first patterned composite conductive layer 120, but the present invention Not limited to this. Other metal conductive materials such as at least one of aluminum, copper, palladium, chromium, titanium, molybdenum, composite layers of the above materials, or alloys of the foregoing may also be used in other embodiments of the invention. In addition, the thicknesses of the first metal conductive layer 121 and the second metal conductive layer 123 are preferably less than or equal to 60 nm, respectively, thereby aligning with the thickness of the first transparent conductive layer 122 to form the optical micro-resonator described above. Light transmittance, but not limited to this. The first transparent conductive layer 122 may include indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO) or other suitable transparent conductive materials such as graphite. Alkene, decene, carbon nanotubes, nanosilver, and the like. In addition, the first patterned composite conductive layer 120 of the embodiment is composed of the stacked first metal conductive layer 121, the first transparent conductive layer 122, and the second metal conductive layer 123, and thus the first metal conductive layer 121, The patterns of the first transparent conductive layer 122 and the second metal conductive layer 123 in the vertical projection direction Z are substantially identical to each other. In this embodiment, the touch device 101 can have a light transmissive area R1 and a surrounding area R2. The surrounding area R2 is located on at least one side of the light transmitting area R1, and the surrounding area R2 preferably surrounds the light transmitting area R1, but is not limited thereto. It should be noted that the first patterned composite conductive layer 120 of the present embodiment can be used to form a touch electrode or/and a connecting wire on the first substrate 111. For example, the first patterned composite conductive layer 120 of the embodiment may include a first touch electrode 120S and a first connecting wire 120C. The first touch electrode 120S is at least partially disposed in the light-transmitting region R1, and the first connecting wire 120C is at least partially disposed in the surrounding area R2, but is not limited thereto, for example, the first The touch electrode 120S and the first connecting wire 120C may also extend from the light transmitting region R1 to the surrounding region R2. In addition, if the first connecting wire 120C located in the surrounding area R2 can be shielded by the decorative layer or the light shielding layer and cannot be seen by the human eye, the first connecting wire 120C can be made of the first metal conductive layer 121, At least one of the group consisting of the first transparent conductive layer 122 and the second metal conductive layer 123 may be formed. For example, the first connecting wire 120C may be only one of them (such as the second metal conductive layer 123). In other words, the first connecting wire 120C is not limited to have to be a three-layer conductive structure. The first patterned composite conductive layer 120 may include a grid pattern or a block pattern, that is, the first touch electrode 120S and the first connection line 120C may be formed by a grid pattern or a block pattern, but Not limited to this. For example, please refer to FIG. 2 to FIG. 4 , and FIG. 2 to FIG. 4 are schematic diagrams showing a grid pattern of the touch device of the embodiment. As shown in FIGS. 2 to 4, the first patterned composite conductive layer 120 may include a grid pattern 120M, and the grid pattern 120M may be a regularly arranged polygonal grid unit (as shown in FIG. 2). a hexagonal grid unit M1, a rectangular grid unit M2 shown in FIG. 3, and a diamond grid unit M3 shown in FIG. 4, an irregular shape grid such as an irregularly arranged irregular polygon grid unit , a circular grid unit or other grid element suitable for regular or irregular shapes. Since the grid pattern 120M described above is formed by the first patterned composite conductive layer 120, the light transmittance thereof can be further improved.

Please refer to Figures 1 and 5. FIG. 5 is a schematic diagram of a touch electrode of the touch device of the embodiment. As shown in FIG. 1 and FIG. 5 , the first patterned composite conductive layer 120 of the embodiment may include a plurality of first touch electrodes 120S and a plurality of first connecting wires 120C. Each of the first connecting wires 120C is electrically connected to the corresponding first touch electrode 120S. Each of the first touch electrodes 120S is electrically insulated from each other for performing a self-capacitive touch detection, but is not limited thereto. The shape of each of the first touch electrodes 120S may be a rectangle, a diamond, a triangle, or other suitable geometric shape. Since the first touch electrode 120S and the first connecting wire 120C are formed by the first patterned composite material conductive layer 120, the first metal conductive layer 121, the first transparent conductive layer 122, and the second metal conductive layer 123 are stacked on each other. First The multilayer structure S1, so that the first touch electrode 120S and the first connecting wire 120C are formed by a grid pattern or a block pattern, the first multilayer structure S1 can be used to reduce electrical impedance and enhance light penetration. The purpose of penetration. Therefore, when the touch device 101 of the present embodiment is integrated or integrated with a display device, the adverse effect of the grid pattern or the block pattern on the display effect can be reduced by the first multilayer structure S1. In addition, the touch device 101 further includes a protective layer 141 disposed on the first substrate 111 and at least partially covering the first patterned composite conductive layer 120. The protective layer 141 may be a single layer or a multi-layer structure, and the protective layer 141 may include an organic material, an inorganic material or an organic-inorganic composite material, and the refractive index of the protective layer 141 is preferably between 1.4 and 2.5, thereby reducing the first layer. The light reflectivity of the patterned composite conductive layer 120, in turn, achieves the effect of reducing the pattern visibility of the first patterned composite conductive layer 120.

The different embodiments of the present invention are described below, and the following description is mainly for the sake of simplification of the description of the embodiments, and the details are not repeated. In addition, the same elements in the embodiments of the present invention are denoted by the same reference numerals to facilitate the comparison between the embodiments.

Please refer to FIG. 6. FIG. 6 is a schematic diagram of the touch device 102 according to the second embodiment of the present invention. As shown in FIG. 6 , the touch device 102 of the present embodiment is different from the first embodiment in that the first touch electrode 120S of the embodiment may include at least one touch signal driving electrode 120T and at least one touch. The signal receiving electrodes 120R are disposed apart from each other for performing a mutual capacitive touch detection, but are not limited thereto.

Please refer to FIG. 7. FIG. 7 is a schematic diagram of the touch device 103 according to the third embodiment of the present invention. As shown in FIG. 7 , the touch device 103 of the present embodiment is different from the first embodiment in that the first multilayer structure S1 of the embodiment further includes a first optical layer 124 disposed on the first metal. The conductive layer 121 is between the first substrate 111. The first optical layer 124 can include a transparent guide An electrical layer, a transparent semiconductor layer or a transparent insulating layer. The transparent conductive layer may preferably comprise indium tin oxide, indium zinc oxide, aluminum zinc oxide or other suitable transparent conductive material, and the transparent semiconductor layer may preferably comprise an oxide semiconductor material such as zinc oxide (ZnO) or zinc oxide. Magnesium (ZnMgO), indium gallium zinc oxide (IGZO), antimony tin oxide (SnSbO2), zinc selenide (ZnSeO), zinc zirconium oxide (ZnZrO) or other suitable transparent semiconductor material, and the above transparent insulating layer is preferred. Oxides such as titanium oxide (TiO2) and yttrium oxide (SiOx), nitrides such as tantalum nitride (SiNx), oxynitrides such as yttrium oxynitride (SiOxNy) or other suitable transparent insulating materials may be included. In addition, the refractive index of the first optical layer 124 is preferably between 1.6 and 2.5, thereby forming an index matching effect with the first substrate 111 and the first patterned composite conductive layer 120, thereby reducing the first patterning. The light reflectivity of the composite conductive layer 120 and the effect of reducing the pattern visibility of the first patterned composite conductive layer 120. It should be noted that in other embodiments, the first optical layer 124 and the other film layers in the first multilayer structure S1 may be different in the vertical projection direction Z, for example, the first optical layer 124 may be at least The light transmissive area R1 is completely covered, but is not limited thereto.

Please refer to FIG. 8. FIG. 8 is a schematic diagram of the touch device 104 according to the fourth embodiment of the present invention. As shown in FIG. 8 , the touch device 104 of the present embodiment is different from the first embodiment in that the first multilayer structure S1 of the embodiment further includes a second optical layer 125 disposed on the second metal. On the layer 123, the second metal conductive layer 123 is disposed between the second optical layer 125 and the first transparent conductive layer 122. The material properties of the second optical layer 125 may be similar to the first optical layer described above and may include a transparent conductive layer, a transparent semiconductor layer or a transparent insulating layer. In addition, the refractive index of the second optical layer 125 is preferably between 1.6 and 2.5, thereby forming an index matching effect with the protective layer 141, thereby reducing the light reflectance of the first patterned composite conductive layer 120 and reducing The effect of the patterning of the first patterned composite conductive layer 120 is significant. Similarly, in other embodiments, the second optical layer 125 and the other film layers in the first multilayer structure S1 may be different in pattern in the vertical projection direction Z, for example, the second optical layer 125 may be at least fully covered. Light zone R1, but is not limited thereto.

Please refer to FIG. 9. FIG. 9 is a schematic diagram of a touch device 105 according to a fifth embodiment of the present invention. As shown in FIG. 9, the touch device 105 of the present embodiment is different from the first embodiment in that the first multilayer structure S1 of the embodiment further includes the first optical layer 124 of the third embodiment. The second optical layer 125 of the fourth embodiment described above. In other words, the first patterned composite conductive layer 120 of the present embodiment is composed of the first optical layer 124, the first metal conductive layer 121, the first transparent conductive layer 122, the second metal conductive layer 123, and the second optical layer. 125 is sequentially stacked on the first substrate 111. Therefore, the patterns of the first optical layer 124, the first metal conductive layer 121, the first transparent conductive layer 122, the second metal conductive layer 123, and the second optical layer 125 in the vertical projection direction Z of the present embodiment are substantially in contact with each other. the same. The effect of further reducing the light reflectivity of the first patterned composite conductive layer 120 can be achieved by the arrangement of the first optical layer 124 and the second optical layer 125 of the present embodiment. For example, when the first substrate 111 is a glass substrate, the first metal conductive layer 121 and the second metal conductive layer 123 are respectively formed of silver, and the first transparent conductive layer 122, the first optical layer 124, and the second When the optical layer 125 is formed of indium tin oxide, respectively, the resistance value, the light transmittance, and the light reflectance required for the first patterned composite conductive layer 120 can be obtained by controlling the thickness of each layer. For example, when the first optical layer 124, the first metal conductive layer 121, the first transparent conductive layer 122, the second metal conductive layer 123, and the second optical layer 125 have thicknesses of 60 nm, 25 nm, and 100 nm, respectively. At 25 nm and 60 nm, a first patterned composite with a resistance value of less than 1.5 ohm/sq, a wavelength of 550 nm, a light transmittance of about 65%, and a light reflectance of about 550 nm at a wavelength of about 10% can be obtained. Material conductive layer 120. When the thickness of the first optical layer 124, the first metal conductive layer 121, the first transparent conductive layer 122, the second metal conductive layer 123, and the second optical layer 125 are respectively 35 nm, 17 nm, 87 nm, and 17 For nanometers and 35 nm, a first patterned composite conductive layer with a resistance value of less than 3 ohm/sq, a 550 nm wavelength light transmittance of about 71%, and a 550 nm wavelength light reflectance of about 8% can be obtained. 120. That is, by adjusting the material and thickness of each layer in the first patterned composite conductive layer 120, the desired resistance value, light transmittance, and light reflectivity can be obtained. It is worth noting that the first, third and fourth above The stacked condition of the different first multilayer structures S1 described in the fifth embodiment can be applied to other subsequent embodiments as needed.

Please refer to FIG. 10, which illustrates a schematic diagram of a touch device 106 according to a sixth embodiment of the present invention. As shown in FIG. 10, the touch device 106 of the present embodiment is different from the fifth embodiment in that the touch device 106 further includes a cover plate 190, and the first patterned composite conductive layer 120 is disposed on the first embodiment. The cover plate 190 is interposed between the first substrate 111. The protective layer 141 of the present embodiment may also have adhesive properties for bonding the cover plate 190 and the first substrate 111, but is not limited thereto.

Please refer to FIG. 11 and FIG. 12 . FIG. 11 is a schematic diagram of a touch device 201 according to a seventh embodiment of the present invention, and FIG. 12 is a cross-sectional view taken along line A-A′ of FIG. 11 . Schematic diagram of the section. As shown in FIG. 11 and FIG. 12 , the touch device 201 of the present embodiment is different from the fifth embodiment in that the touch device 201 includes at least one first axial electrode 241 and at least one second axial electrode. 242 and an insulating layer 230. The first axial electrode 241 and the second axial electrode 242 are interdigitated and insulated from each other on the first substrate 111. The first axial electrode 241 extends along a first direction X, the second axial electrode 242 extends along a second direction Y, and the first direction X is substantially perpendicular to the second direction Y, but is not limit. In the embodiment, the first axial electrode 241 may include a plurality of sub-electrodes 241X and a first connecting wire 241C. The sub-electrodes 241X are arranged in the first direction X, and the first connecting wires 241C are disposed between the two sub-electrodes 241X for electrically connecting the two sub-electrodes 241X. The insulating layer 230 is at least partially disposed between the first connecting wire 241C and the second axial electrode 242 for electrically insulating the first axial electrode 241 and the second axial electrode 242. It should be noted that the second axial electrode 242 and the sub-electrode 241X of the embodiment are preferably formed of a transparent conductive material, and the first connecting wire 241C is preferably formed by the first patterned composite conductive layer 120, but Not limited to this. Since the first connecting wire 241C can be formed by the first patterned composite material conductive layer 120 and has the first multilayer structure S1, the first connecting wire can be reduced. The electrical impedance of the 241C increases the light transmittance of the first connecting wire 241C and the effect of reducing the light reflectance of the first connecting wire 241C. That is to say, the pattern visibility of the first connecting wires 241C for bridging the two sub-electrodes 241X of the present embodiment can be lowered by having the first multilayer structure S1. In addition, the impedance of the first connecting wire 241C of the present embodiment may be lowered by having the first multilayer structure S1, thereby improving the height of the first connecting wire 241C of the embodiment which is smaller than the average width of the sub-electrode 241X. Impedance problem.

Please refer to FIG. 11 and FIG. 13 . FIG. 13 is a schematic diagram of the touch device 202 according to the eighth embodiment of the present invention. As shown in FIG. 13 , the touch device 202 of the present embodiment is different from the seventh embodiment in that the touch device 202 further includes a second patterned composite conductive layer 220 disposed on the first substrate 111 . The second composite conductive layer 160 has a second multilayer structure S2, and the second multilayer structure S2 includes a third metal conductive layer 221, a second transparent conductive layer 222, and a fourth metal conductive layer 223 stacked on each other. . The third metal conductive layer 221 and the fourth metal conductive layer 223 may preferably include silver or a silver alloy, thereby reducing the overall electrical resistance of the second patterned composite conductive layer 220, but is not limited thereto. The second transparent conductive layer 222 is disposed between the third metal conductive layer 221 and the fourth metal conductive layer 223 to form another optical micro cavity between the third metal conductive layer 221 and the fourth metal conductive layer 223. . The second transparent conductive layer 222 directly contacts the third metal conductive layer 221 and the fourth metal conductive layer 223, respectively, that is, the thickness of the second transparent conductive layer 222 is substantially equal to the third metal conductive layer 221 and the fourth metal conductive layer. 223 is the pitch in the vertical projection direction Z. Therefore, the thickness of the second transparent conductive layer 222 is substantially controlled between 500 nm and 40 nm, and another optical micro-resonant cavity can be formed between the third metal conductive layer 221 and the fourth metal conductive layer 223. . In addition, the thicknesses of the third metal conductive layer 221 and the fourth metal conductive layer 223 are preferably less than or equal to 60 nm, respectively, thereby aligning with the thickness of the second transparent conductive layer 222 to form the optical micro-resonator described above. Light transmittance, but not limited to this. In addition, the second multilayer structure S2 may also further include a third optical layer 224 and a fourth optical layer 225. In other words, the second patterned composite conductive layer 220 of the embodiment may be the third optical layer 224, The third metal conductive layer 221, the second transparent conductive layer 222, the fourth metal conductive layer 223, and the fourth optical layer 225 are sequentially stacked on the first substrate 111. Therefore, the patterns of the third optical layer 224, the third metal conductive layer 221, the second transparent conductive layer 222, the fourth metal conductive layer 223, and the fourth optical layer 225 in the vertical projection direction Z are substantially in contact with each other. the same. The effect of further reducing the light reflectivity of the second patterned composite conductive layer 220 can be achieved by the arrangement of the third optical layer 224 and the fourth optical layer 225 of the present embodiment. In other words, the second patterned composite conductive layer 220 and the second multilayer structure S2 thereof are similar to the first patterned composite conductive layer 120 and the first multilayer structure S1 thereof, and thus are no longer Narration.

It should be noted that, in this embodiment, the first patterned composite conductive layer 120 and the second patterned composite conductive layer 220 are disposed on the same side of the first substrate 111, and the first patterned composite conductive layer The 120 series is at least partially disposed between the first substrate 111 and the second patterned composite conductive layer 220. The second patterned conductive material conductive layer 220 may include a plurality of second touch electrodes 220S disposed on the first substrate 111 and arranged along the first direction X. The first connecting wires 241C are disposed on the two second touch electrodes 220S. For electrically connecting the two second touch electrodes 220S. In other words, the second touch electrode 220S and the first connecting wire 241C can be used to constitute the first axial electrode 241 of the embodiment. In addition, the second axial electrode 242 of the present embodiment is preferably formed by the second patterned composite conductive layer 220. Since the first axial electrode 241 and the second axial electrode 242 may be formed by the first patterned composite conductive layer 120 or the second patterned composite conductive layer 220, the first multilayer structure S1 or the second multilayer structure is formed. S2, the effect of reducing the electrical impedance of the first axial electrode 241 and the second axial electrode 242, increasing the light transmittance thereof, and reducing the light reflectance thereof can be achieved. In addition, considering the electrical connection between the second touch electrode 220S and the first connecting wire 241C, the second optical layer 125 and the third optical layer 224 are preferably transparent conductive layers, but limit. In another embodiment, the first connecting wire 241C and the second axis electrode 242 may have a multi-layer structure.

Please refer to Figure 14 and Figure 15. FIG. 14 is a schematic diagram of a touch device 301 according to a ninth embodiment of the present invention, and FIG. 15 is a schematic top view of the touch device of the embodiment. As shown in FIG. 14 and FIG. 15 , the touch device 301 of the present embodiment is different from the eighth embodiment in that the first patterned composite conductive layer 120 and the second patterned composite are electrically conductive in this embodiment. The layers 220 are respectively disposed on opposite sides of the first substrate 111. More specifically, the first patterned composite conductive layer 120 is disposed on the first surface 111A of the first substrate 111, and the second patterned composite conductive layer 220 is disposed on the second surface 111B of the first substrate 111. on. In addition, the first patterned composite conductive layer 120 includes a plurality of first touch electrodes 351 , and the second patterned composite conductive layer 220 includes a plurality of second touch electrodes 352 . Each of the first touch electrodes 351 is preferably a strip electrode extending in the first direction X, and each of the second touch electrodes 352 is preferably a strip electrode extending in the second direction Y, but is not limited thereto. . In addition, the touch device 301 further includes a protective layer 141 and a protective layer 142 disposed on the first surface 111A and the second surface 111B respectively for protecting the first touch electrode 351 and the second touch electrode 352 respectively. . The material properties of the protective layer 142 are similar to those of the protective layer 141, and therefore will not be described herein. In addition, the protective layer 141 and the protective layer 142 may also be replaced by an optical adhesive, for example, the touch device 301 and the upper cover plate (not shown) and the lower display (not shown). Show) the glue.

Please refer to FIG. 16. FIG. 16 is a schematic diagram of a touch device 302 according to a tenth embodiment of the present invention. As shown in FIG. 16 , the touch device 302 of the present embodiment is different from the ninth embodiment in that the touch device 302 further includes a second substrate 112 disposed opposite to the first substrate 111 . The second substrate 112 has a third surface 112A and an opposite fourth surface 112B. The third surface 112A of the second substrate 112 faces the second surface 111B of the first substrate 111. In the touch device 302 , the second patterned composite conductive layer 220 is disposed on the second substrate 112 . That is, the first touch electrode 351 and the second touch electrode 352 are respectively disposed on different first substrates 111 and second substrates 112. In addition, the touch device 302 can further include a cover plate 190. The protective layer 142 is disposed between the first substrate 111 and the second substrate 112, and the protective layer 142 may also have a selective adhesion. The feature is used to bond the first substrate 111 and the second substrate 112, but is not limited thereto. The protective layer 141 is disposed between the first substrate 111 and the cover plate 190, and the protective layer 141 may also selectively have adhesive properties for bonding the first substrate 111 and the cover plate 190. In this embodiment, the first patterned composite conductive layer 120 is disposed on the first surface 111A of the first substrate 111, and the second patterned composite conductive layer 220 is disposed on the third surface of the second substrate 112. Upper 112A, but the invention is not limited thereto. In other embodiments of the present invention, the first patterned composite conductive layer 120 may be disposed on the second surface 111B of the first substrate 111 or the second patterned composite conductive layer 220 may be disposed on the first The fourth surface 112B of the second substrate 112 is combined with a structure for obtaining a desired first touch electrode 351 and a second touch electrode 352. In addition, since the first patterned composite conductive layer 120 and the second patterned composite conductive layer 220 are respectively disposed on different substrates, respectively, different substrates can be directly used for patterning processes such as lithography and etching processes. The first patterned composite conductive layer 120 and the second patterned composite conductive layer 220 are respectively formed, and then combined with each other through the protective layer 142 to achieve the effect of simplifying the overall process step. The second substrate 112 of the present embodiment may preferably include a glass substrate, a plastic substrate, a glass film, a plastic film or a display substrate, but is not limited thereto. In another embodiment, only one of the first touch electrode 351 and the second touch electrode 352 may adopt the first patterned composite conductive layer 120 or the second patterned composite. The material conductive layer 220, and not necessarily both, must employ the first patterned composite conductive layer 120 and the second patterned composite conductive layer 220.

In summary, the touch device of the present invention uses a two-metal conductive layer to sandwich a conductive layer of a transparent conductive layer to form a touch electrode or/and a connecting wire, and the two metal conductive layers are used to reduce the overall electricity. The impedance forms an optical micro-resonant cavity between the two metal conductive layers to achieve the effect of improving the transmittance. In addition, the present invention further utilizes an optical layer disposed in the multilayer structure of the patterned composite conductive layer, and by reducing the refractive index matching effect of the optical layer, the light reflectance and pattern visibility of the patterned composite conductive layer are reduced, thereby The line width of the grid-like touch electrodes or/and the connecting wires can be appropriately increased.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

105‧‧‧Touch device

111‧‧‧First substrate

111A‧‧‧ first side

111B‧‧‧ second side

120‧‧‧First patterned composite conductive layer

120S‧‧‧first touch electrode

121‧‧‧First metal conductive layer

122‧‧‧First transparent conductive layer

123‧‧‧Second metal conductive layer

124‧‧‧First optical layer

125‧‧‧Second optical layer

141‧‧‧Protective layer

S1‧‧‧ first multi-layer structure

Z‧‧‧Vertical projection direction

Claims (18)

A touch device includes: a first substrate; and a first patterned composite conductive layer disposed on the first substrate, wherein the first patterned composite conductive layer comprises a first multilayer structure, The first multilayer structure includes a first metal conductive layer, a first transparent conductive layer, and a second metal conductive layer, which are sequentially stacked on the first substrate, wherein the first transparent conductive layer is disposed on the first Between the metal conductive layer and the second metal conductive layer, an optical microcavity is formed between the first metal conductive layer and the second metal conductive layer. The touch device of claim 1, wherein the first metal conductive layer and the second metal conductive layer comprise silver or a silver alloy. The touch device of claim 1, wherein the thickness of the first metal conductive layer and the second metal conductive layer are respectively less than or equal to 60 nm. The touch device of claim 1, wherein the first transparent conductive layer has a thickness of between 500 nm and 40 nm. The touch device of claim 1, wherein the first metal conductive layer is disposed between the first transparent conductive layer and the first substrate, and the first multilayer structure further includes a first optical layer. And between the first metal conductive layer and the first substrate. The touch device of claim 5, wherein the first optical layer comprises a transparent conductive layer, a transparent semiconductor layer or a transparent insulating layer, and the first optical layer has a refractive index of between 1.6 and 2.5 . The touch device of claim 1, wherein the first metal conductive layer is disposed between the first transparent conductive layer and the first substrate, the first multilayer structure further includes a second optical layer, and The second metal conductive layer is disposed between the second optical layer and the first transparent conductive layer. The touch device of claim 7, wherein the second optical layer is a transparent conductive layer, a transparent semiconductor layer or a transparent insulating layer, and the second optical layer has a refractive index of between 1.6 and 2.5. The touch device of claim 1, wherein the first patterned composite conductive layer comprises at least one first touch electrode or a first connecting wire. The touch device of claim 1, wherein the first patterned composite conductive layer comprises a grid pattern or a block pattern. The touch device of claim 1, further comprising a protective layer disposed on the first substrate and at least partially covering the first patterned composite conductive layer, wherein the protective layer has a refractive index of 1.4 to Between 2.5. The touch device of claim 1, wherein the first substrate comprises a glass substrate, a plastic substrate, a glass film, a plastic film, a cover plate or a display substrate. The touch device of claim 1, further comprising a second patterned composite conductive layer, wherein the second patterned composite conductive layer has a second multilayer structure, the second multilayer structure comprises a first a third metal conductive layer, a second transparent conductive layer, and a fourth metal conductive layer are disposed on each other, wherein the second transparent conductive layer is disposed between the third metal conductive layer and the fourth metal conductive layer. Another optical micro-resonant cavity is formed between the third metal conductive layer and the fourth metal conductive layer. The touch device of claim 13, wherein the first patterned composite conductive layer and the second patterned composite conductive layer are disposed on the same side of the first substrate. The touch device of claim 13, wherein the first patterned composite conductive layer and the second patterned composite conductive layer are respectively disposed on opposite sides of the first substrate, and the second The patterned composite conductive layer includes at least one second touch electrode. The touch device of claim 13 further comprising a second substrate disposed opposite the first substrate, wherein the second patterned composite conductive layer is disposed on the second substrate, and the second pattern The conductive layer of the composite material includes at least one second touch electrode. The touch device of claim 13, wherein the second substrate comprises a glass substrate, a plastic substrate, a glass film, a plastic film or a display substrate. The touch device of claim 1, further comprising a light transmissive region and a surrounding region on at least one side of the light transmissive region, wherein the first patterned composite material conductive layer comprises at least partially disposed on the transparent region a first touch electrode of the light region, the touch device further includes a first connecting wire disposed at least partially in the surrounding area, the first connecting wire being the first metal conductive layer, the first transparent conductive One of a group consisting of a layer and the second metal conductive layer.