TWM494963U - Touch panel - Google Patents

Abstract

A touch panel includes a first substrate, at least one first axis electrode, at least one second axis electrode and an insulation layer. The first axis electrode is disposed on the first substrate and extends along a first direction. The first axis electrode includes a plurality of first metal meshes. The second axis electrode is disposed on the first substrate and extends along a second direction. The second axis electrode includes a plurality of second metal meshes. The first axis electrode at least partially overlaps the second axis electrode along a direction perpendicular to the first substrate. An aperture ratio of a region where the first axis electrode overlaps the second axis electrode is substantially equal to an aperture ratio of a region where the first axis electrode does not overlap the second axis electrode. The insulation layer is disposed between the first axis electrode and the second axis electrode.

Description

Touch panel

The present invention relates to a touch panel, and more particularly to a touch panel that uses an aluminum mesh to form an electrode.

In recent years, touch sensing technology has rapidly developed, and many consumer electronic products such as mobile phones, GPS navigator systems, tablet PCs, personal digital assistants (PDAs), and notebook computers (laptop PC) and other products with touch function. Among the above electronic products, the original display function and the touch sensing function are mainly integrated to form a touch display device. At present, the more mainstream touch display devices are formed by a display panel and a touch panel being bonded to each other to form an external touch display panel.

At present, the technology development of touch panels is very diverse, and the more common technologies include resistive, capacitive, and optical. Among them, capacitive touch panels have become the mainstream touch technology used in middle and high-end consumer electronic products due to their high accuracy, multi-touch, high durability and high touch resolution. The operation principle of the capacitive touch panel is to use the sensing electrode to detect the change of the capacitance of the touch point, and to use the connecting line connecting the electrodes on different axes to transmit the signal back to complete the positioning. In the conventional capacitive touch panel technology, the sensing electrode is generally formed of a transparent conductive material such as indium tin oxide (ITO). Since the resistivity of the transparent conductive material is generally higher than that of the metal conductive material, it is used. When the transparent conductive material forms the sensing electrode, the overall resistance is too high and the reaction speed is affected. Therefore, at present, there is also a metal mesh in which metal wires are interwoven to replace the transparent conductive material to form a sensing electrode. Calculate the speed of the reaction. However, the use of the different axial sensing electrodes of the metal mesh is easy to grasp (overlap) where the aperture ratio is lowered due to the interaction of the metal mesh, so that the visibility of the handshake increases and affects the touch panel. Appearance quality.

One of the main purposes of the present invention is to provide a touch panel that uses metal meshes to form different axial electrodes. By adjusting the shape of the metal mesh or the bridge wires, the aperture ratio of the different axial electrode intersections is substantially equal to The aperture ratio of the different axial electrodes is not overlapped, thereby improving the appearance quality of the touch panel using the metal grid.

To achieve the above objective, a preferred embodiment of the present invention provides a touch panel including a first substrate, at least one first axial electrode, at least one second axial electrode, and an insulating layer. The first axial electrode is disposed on the first substrate and extends along a first direction. The first axial electrode includes a plurality of first metal meshes. The second axial electrode is disposed on the first substrate and extends along a second direction. The second axial electrode includes a plurality of second metal grids, the first axial electrode system and the second axial electrode at least partially overlapping in a direction perpendicular to the first substrate, and the first axial electrode and the second axial direction The aperture ratio of the region where the electrodes overlap each other is substantially equal to the aperture ratio of the region where the first axial electrode and the second axial electrode do not overlap each other. The insulating layer is disposed on the first substrate, the first axial electrode and the second axial electrode are disposed on the same surface of the first substrate, and the insulating layer is disposed between the first axial electrode and the second axial electrode .

Another preferred embodiment of the present invention provides a touch panel in which an insulating layer at least partially contacts a first substrate.

Another preferred embodiment of the present invention provides a touch panel in which a region where a first axial electrode and a second axial electrode overlap each other and a region where the first axial electrode and the second axial electrode do not overlap each other The difference in aperture ratio is less than 5%.

Another preferred embodiment of the present invention provides a touch panel in which a pattern of the first metal mesh is in a region where the first axial electrode and the second axial electrode overlap each other and the pattern of the second metal mesh.

Another preferred embodiment of the present invention provides a touch panel, wherein at least a portion of the first metal mesh and at least a portion of the second metal mesh overlap each other in a direction perpendicular to the first substrate, and each of the first The aperture ratio at which the metal mesh overlaps the corresponding second metal mesh is substantially equal to the aperture ratio at which the first metal mesh and each of the second metal meshes do not overlap each other.

Another preferred embodiment of the present invention provides a touch panel, wherein the first axial electrode further includes at least one bridge wire disposed between the two separated first metal grids for electrically connecting the first metal grid. .

Another preferred embodiment of the present invention provides a touch panel in which a bridge wire overlaps one edge of at least one second metal mesh in a direction perpendicular to the first substrate.

Another preferred embodiment of the present invention provides a touch panel, wherein the pattern of the bridge wire is in a region where the first axial electrode and the second axial electrode overlap each other and at an edge of at least one second metal mesh The graphics match.

Another preferred embodiment of the present invention provides a touch panel, wherein the first substrate further includes a plurality of unit matrices arranged in an array, and the first axial electrode, the second axial electrode, or the bridge line is disposed in the unit matrix. The opening ratios of the unit matrices are substantially equal to each other.

Another preferred embodiment of the present invention provides a touch panel in which each of the first metal mesh and each of the second metal meshes includes a metal mesh of a regular shape.

Another preferred embodiment of the present invention provides a touch panel in which each of the first metal mesh and each of the second metal meshes includes an irregularly shaped metal mesh.

Another preferred embodiment of the present invention provides a touch panel, wherein the first substrate comprises a glass substrate, a hard cover plate, a plastic substrate, a soft cover plate, a flexible plastic substrate, a thin glass substrate or a display. The substrate.

Another preferred embodiment of the present invention provides a touch panel including a first substrate, a second substrate, at least one first axial electrode, and at least one second axial electrode. The second substrate is disposed opposite to the first substrate. The first axial electrode is disposed on the first substrate and extends along a first direction. The first axial electrode includes a plurality of first metal meshes. The second axial electrode is disposed on the second substrate and extends along a second direction. The second axial electrode includes a plurality of second metal grids, the first axial electrode system and the second axial electrode at least partially overlapping in a direction perpendicular to the first substrate, and the first axial electrode and the second axial direction The aperture ratio of the region where the electrodes overlap each other is substantially equal to the aperture ratio of the region where the first axial electrode and the second axial electrode do not overlap each other.

Another preferred embodiment of the present invention provides a touch panel, wherein the first substrate or/and the second substrate comprises a glass substrate, a hard cover plate, a plastic substrate, a soft cover plate, a flexible plastic substrate, and a A thin glass substrate or a substrate of a display.

100‧‧‧ touch panel

110‧‧‧First substrate

110A‧‧‧Upper surface

110B‧‧‧ lower surface

120‧‧‧First axial electrode

120M‧‧‧First Metal Grid

130‧‧‧Second axial electrode

130M‧‧‧Second metal grid

200‧‧‧ touch panel

220‧‧‧First axial electrode

220M‧‧‧First Metal Grid

230‧‧‧second axial electrode

230M‧‧‧Second metal grid

240‧‧‧Insulation block

250‧‧‧Bridge wiring

300‧‧‧ touch panel

320‧‧‧First axial electrode

320M‧‧‧First Metal Grid

330‧‧‧Second axial electrode

330M‧‧‧Second metal grid

340‧‧‧Insulation block

350‧‧‧Bridge wiring

400‧‧‧ touch panel

410‧‧‧First substrate

410R‧‧‧Unit Matrix

420‧‧‧First axial electrode

420M‧‧‧First Metal Grid

430‧‧‧second axial electrode

430M‧‧‧Second metal grid

440‧‧‧insulation block

450‧‧‧Bridge wiring

500‧‧‧ touch panel

540‧‧‧Insulation

600‧‧‧ touch panel

610‧‧‧second substrate

610A‧‧‧ first surface

610B‧‧‧ second surface

640‧‧‧ adhesive layer

N‧‧‧ node

R1‧‧‧ area

R2‧‧‧ area

X‧‧‧ first direction

Y‧‧‧second direction

Z‧‧‧ direction

FIG. 1 is a schematic view showing a touch panel of the first preferred embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view taken along line A-A' in Fig. 1.

3 and 4 are schematic views showing a method of fabricating a touch panel according to a second preferred embodiment of the present invention.

Fig. 5 is a partially enlarged schematic view of Fig. 4.

Fig. 6 is a schematic cross-sectional view taken along line B-B' in Fig. 5.

Fig. 7 is a schematic cross-sectional view taken along line C-C' in Fig. 5.

FIG. 8 is a schematic diagram of a touch panel of a third preferred embodiment of the present invention.

FIG. 9 and FIG. 10 are schematic diagrams showing a method of fabricating a touch panel according to a fourth preferred embodiment of the present invention.

FIG. 11 is a schematic view showing a touch panel of a fifth preferred embodiment of the present invention.

FIG. 12 is a schematic view showing a touch panel of a sixth preferred embodiment of the present invention.

In order to make the present invention more familiar to those skilled in the art to which the present invention pertains, a number of preferred embodiments of the present invention are listed below, and the composition of the present invention is described in detail in conjunction with the drawings.

Please refer to Figure 1 and Figure 2. FIG. 1 is a schematic view showing a touch panel of the first preferred embodiment of the present invention. Fig. 2 is a schematic cross-sectional view taken along line A-A' in Fig. 1. For the convenience of description, the drawings of this creation are only for illustration to make it easier to understand the creation, and the detailed proportions can be adjusted according to the design requirements. As shown in FIG. 1 and FIG. 2 , the touch panel 100 includes a first substrate 110 , at least one first axial electrode 120 , and at least one second axial electrode 130 . The first substrate 110 may include a hard first substrate such as a glass substrate (which may be a tempered glass), a sapphire substrate, a ceramic substrate, or a flexible substrate such as a plastic substrate or other suitable material. The first axial electrode 120 is disposed on the first substrate 110 and extends along a first direction X, and the first axial electrode 120 includes a plurality of first metal meshes 120M. The second axial electrode 130 is disposed on the first substrate 110 and extends along a second direction Y, and the second axial electrode 130 includes a plurality of second metal meshes 130M. The first direction X is preferably substantially perpendicular to the second direction, but is not limited thereto. Please also note that for the convenience of explanation, In the drawings of the present invention, only a combination of a first axial electrode and a second axial electrode is illustrated, but the present invention does not limit the number of first axial electrodes and plurals as needed. Second axial electrodes. In this embodiment, the first axial electrode 120 and the second axial electrode 130 at least partially overlap in a direction Z of the vertical first substrate 110, and the first axial electrode 120 and the second axial electrode 130 are mutually The aperture ratio of the overlapped region R1 is substantially equal to the aperture ratio of the region where the first axial electrode 120 and the second axial electrode 130 do not overlap each other.

Further, as shown in FIG. 1 and FIG. 2 , the first axial electrode 120 is disposed on one lower surface 110B of the first substrate 110 , and the second axial electrode 130 is disposed on the first substrate 110 opposite to the first substrate 110 . An upper surface 110A of the lower surface 110B. In other words, the first axial electrode 120 and the second axial electrode 130 are disposed on different surfaces of the first substrate 110, but are not limited thereto. In other preferred embodiments of the present invention, the first axial electrode 120 and the second axial electrode 130 may be respectively formed on two different substrates, and then the two substrates are bonded to form a touch panel. . In the first axial electrode 120 of the present embodiment, each of the first metal meshes 120M is connected to each other. In the second axial electrode 130, each of the second metal meshes 130M is connected to each other. Each of the first metal mesh 120M and each of the second metal meshes 130M preferably have the same shape, and each of the first metal mesh 120M and each of the second metal meshes 130M has a regular shape such as a regular hexagon. Metal mesh, but the present invention is not limited thereto, and in other preferred embodiments of the present invention, the first metal mesh 120M and the second metal mesh having other regular or irregular shapes are also visually designed. 130M. In a region R1 in which the first axial electrode 120 and the second axial electrode 130 overlap each other, the first metal mesh 120M and the second metal mesh 130M are overlapped with each other in a direction Z perpendicular to the first substrate 110 and patterned. Correspondingly, the opening ratio of each of the first metal mesh 120M and the corresponding second metal mesh 130M may be substantially equal to the opening of each of the first metal mesh 120M and each of the second metal meshes 130M. rate. In other words, in this embodiment, the first metal grid 120M and the second metal grid 130M are designed to have the same size and shape such that the first axial electrode 120 and the second axial electrode 130 overlap each other. In R1 because of the first metal grid 120M and The degree to which the second metal mesh 130M interacts to cause an increase in the aperture ratio is improved. It should be noted that the process alignment variation condition when the first axial electrode 120 and the second axial electrode 130 are respectively formed on the upper and lower sides of the first substrate 110 is considered, and the first axial electrode 120 and the second axial electrode are considered. The difference in aperture ratio between the regions R1 overlapping 130 and the regions where the first axial electrodes 120 and the second axial electrodes 130 do not overlap each other is preferably less than 5%, which is used to reduce the decrease in the aperture ratio of the region R1. The problem of visibility is improved, thereby improving the appearance quality of the touch panel 100.

It should be noted that the first axial electrode 120 and the second axial electrode 130 of the embodiment preferably respectively include at least one of a metal material such as gold, aluminum, copper, silver, chromium, titanium, molybdenum, and niobium. a composite layer of the above materials, an alloy of the above materials, or a composite layer of the above materials and an alloy of the above materials, but not limited thereto, other conductive materials may be used. Further, the composite layer described above may be, for example, molybdenum. A three-layer stack structure consisting of aluminum-bismuth alloy and molybdenum or ITO/Ag/ITO, but not limited thereto, as long as the stacking structure capable of achieving the conductive effect is within the protection scope of the present invention. In addition, the first axial electrode 120 and the second axial electrode 130 of the foregoing metal material may be surface-treated to reduce the reflectance to light. The surface treatment may be performed by introducing oxygen into the coating film, forming an oxidized metal such as copper oxide, molybdenum oxide, or even forming a metal oxide such as nitrogen oxide, thereby atomizing or blackening the surface of the metal electrode to reduce the reflectance to light. The first axial electrode 120 and the second axial electrode 130 are formed by coating or ink-jet metal materials, and may be doped with an organic or inorganic material to reduce the reflectance of the metal material to light. Preferably, the first metal mesh 120M and the second metal mesh 130M have the same line width, the line width is substantially less than 4 microns, and the line width of the first metal mesh 120M and the second metal mesh 130M Preferably, it is between 2 and 3 microns, but is not limited thereto. The first axial electrode 120 and the second axial electrode 130 can be a touch signal transmitting electrode and a touch signal receiving electrode for transmitting the touch sensing signal and receiving the touch sensing signal. In other words, the touch panel 100 can be used for performing a mutual capacitive touch sensing, but is not limited thereto. The touch panel 100 of the present embodiment constitutes the first axial electrode 120 by the first metal mesh 120M and the second metal mesh 130M, respectively. And the second axial electrode 130, and adjusting the shape of the first metal mesh 120M and the second metal mesh 130M to reduce the aperture ratio of the region R1 where the first axial electrode 120 and the second axial electrode 130 overlap each other The touch panel 100 can achieve an effect of improving the appearance quality under the condition that the touch response speed is increased by the first metal mesh 120M and the second metal mesh 130M.

The different implementations of the present invention will be described below, and the following description is mainly for the sake of simplification of the description, and the details of the various embodiments will not be 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 Figures 3 to 7. 3 and 4 are schematic views showing a method of fabricating a touch panel according to a second preferred embodiment of the present invention. Fig. 5 is a partially enlarged schematic view of Fig. 4. Fig. 6 is a schematic cross-sectional view taken along line B-B' in Fig. 5. Fig. 7 is a schematic cross-sectional view taken along line C-C' in Fig. 5. The manufacturing method of the touch panel of this embodiment includes the following steps. First, as shown in FIG. 3, a plurality of first metal meshes 220M and a second axial electrode 230 are formed on the first substrate 110. The second axial electrode 230 includes a plurality of interconnected second metal meshes 230M. At least a portion of the first metal mesh 220M are separated from each other. In other words, the first metal mesh 220M and the second metal mesh 230M of the present embodiment may be formed by patterning a metal material layer, but not limited thereto. Then, as shown in FIG. 4, an insulating block 240 and a bridge wire 250 are sequentially formed, and a first axial electrode 220 is formed by electrically connecting two mutually separated first metal meshes 220M by a bridge wire 250. It should be noted that, in other preferred embodiments of the present invention, the insulating block 240 and the bridge wire 250 may be formed on the first substrate 110 as needed, and then the first metal mesh 220M is formed to separate the two. The first metal mesh 220M can be electrically connected by a bridge wire 250.

As shown in FIG. 4 to FIG. 6 , the embodiment provides a touch panel 200, including A substrate 110, a first axial electrode 220, and a second axial electrode 230. The first axial electrode 220 is disposed on the first substrate 110 and extends along the first direction X, and the first axial electrode 220 includes a plurality of first metal meshes 220M and at least one bridge wire 250. The second axial electrode 230 is disposed on the first substrate 110 and extends along the second direction Y, and the second axial electrode 230 includes a plurality of second metal meshes 230M. The first axial electrode 220 is at least partially overlapped with the second axial electrode 230 in the direction Z perpendicular to the first substrate 110, and the aperture ratio of the region R2 where the first axial electrode 220 and the second axial electrode 230 overlap each other Generally, it is equal to the aperture ratio of a region where the first axial electrode 220 and the second axial electrode 230 do not overlap each other. In this embodiment, the first axial electrode 220 and the second axial electrode 230 are disposed on the upper surface 110A of the first substrate 110, that is, the first axial electrode 220 and the second axial electrode 230 are It is disposed on the same surface of the first substrate 110, but is not limited thereto. The bridge wire 250 is disposed between the two first metal meshes 220M separated from each other for electrically connecting the first metal mesh 220M. The bridge wire 250 preferably includes at least one of a metal material such as aluminum, copper, silver, chromium, titanium, molybdenum, a composite layer of the above materials, or an alloy of the above materials, but is not limited thereto. A material of conductive nature. In addition, the touch panel 200 may further include at least one insulating block 240 disposed between the bridge wire 250 and the corresponding second metal mesh 230M for electrically isolating the bridge wire 250 from the corresponding second metal mesh 230M. In other words, the bridge wire 250 is electrically connected to the insulating block 240 disposed on the second metal mesh 230M to be in contact with the two separated first metal meshes 220M.

As shown in FIG. 5 and FIG. 7 , in the region R2 where the first axial electrode 220 and the second axial electrode 230 overlap each other, the bridge wire 250 is in the direction Z perpendicular to the first substrate 110 and at least one One of the edges of the two metal grid 230M overlaps each other and the pattern matches. In other words, the line width of the bridge wire 250 is preferably substantially equal to the line width of the first metal mesh 220M and the second metal mesh 230M, but is not limited thereto. With the above design, the aperture ratio in the vicinity of the bridge wire 250, for example, the region R2 in FIG. 5, can be substantially equal to the aperture ratio of each of the first metal mesh 220M and each of the second metal meshes 230M. In other words, this embodiment is based on the bridge wire 250 One of the edge patterns of the second metal mesh 230M underneath is adjusted such that the area of the region R2 where the first axial electrode 220 and the second axial electrode 230 overlap each other is reduced due to the influence of the bridge wire 250. improve. For example, when the second metal mesh 230M is a regular hexagon, the bridge wire 250 is preferably a fold line to conform to the edge shape of the second metal mesh 230M. It should be noted that, considering the process alignment variation condition when the bridge wire 250 is fabricated, the region R2 where the first axial electrode 220 and the second axial electrode 230 overlap each other and the first axial electrode 220 and the second axial electrode are considered. The difference in aperture ratio between the regions that do not overlap each other is preferably less than 5%, which is used to reduce the visibility problem caused by the decrease in the aperture ratio of the region R2, thereby improving the appearance quality of the touch panel 200. In addition, the first axial electrode 220 and the second axial electrode 230 of the present embodiment can be a touch signal transmitting electrode and a touch signal receiving electrode for transmitting the touch sensing signal and receiving the touch sensing signal. In other words, the touch panel 200 can be used for performing a mutual capacitive touch sensing, but is not limited thereto.

Please refer to Figure 8. FIG. 8 is a schematic diagram of a touch panel of a third preferred embodiment of the present invention. As shown in FIG. 8 , the touch panel 300 includes a first substrate 110 , a first axial electrode 320 , a second axial electrode 330 , and an insulating block 340 . The first axial electrode 320 is disposed on the first substrate 110 and extends along the first direction X, and the first axial electrode 320 includes a plurality of first metal meshes 320M and a bridge wire 350. The second axial electrode 330 is disposed on the first substrate 110 and extends along the second direction Y, and the second axial electrode 330 includes a plurality of second metal meshes 330M. The first metal mesh 320M and the second metal mesh 330M are respectively an irregularly shaped metal mesh, and each of the first metal meshes is different from the second preferred embodiment. The grid 320M and each of the second metal grids 330M are different in pattern from each other. In contrast, the bridge wire 350 is preferably an irregular shaped line segment to conform to the shape of the edge of the second metal mesh 330M. In addition to the shapes of the first metal mesh 320M, the second metal mesh 330M, and the bridge wire 350, the touch panel 300 of the present embodiment has the features, the installation locations, and the material properties of the remaining components. The preferred embodiment is similar and will not be described again here.

Please refer to Figure 9 and Figure 10. FIG. 9 and FIG. 10 are schematic diagrams showing a method of fabricating a touch panel according to a fourth preferred embodiment of the present invention. The manufacturing method of the touch panel of this embodiment includes the following steps. First, as shown in FIG. 9, a first substrate 410 is provided. A plurality of unit matrices 410R arranged in an array are defined on the first substrate 410, and a plurality of uniform arrays are defined in each unit matrix 410R. Node N, the distance between each adjacent node N is a certain value. Then, as shown in FIG. 10, a first axial electrode 420 and a second axial electrode 430 are formed on the first substrate 410 to form the touch panel 400. The first axial electrode 420 extends along the first direction X, and the first axial electrode 420 includes a plurality of first metal meshes 420M and a bridge wire 450. The second axial electrode 430 extends in the second direction Y, and the second axial electrode 430 includes a plurality of interconnected second metal meshes 430M. At least a portion of the first metal mesh 420M are separated from each other. The bridge wire 450 is disposed between the two first metal meshes 420M separated from each other for electrically connecting the first metal mesh 420M. In addition, the touch panel 400 further includes an insulating block 440 disposed between the bridge wire 450 and the corresponding second metal mesh 430M for electrically isolating the bridge wire 450 and the corresponding second metal mesh 430M. In other words, the bridge wire 450 is connected across the insulating block 440 disposed on the second metal mesh 430M to form an electrical connection with the two first metal meshes 420M separated from each other.

In the present embodiment, the first axial electrode 420 is at least partially overlapped with the second axial electrode 430 in the direction Z perpendicular to the first substrate 410. The first axial electrode 420, the second axial electrode 430 or the bridge wire 450 is disposed in each of the unit matrix 410R, and each unit can be adjusted by adjusting the shapes of the first metal mesh 420M and each of the second metal meshes 430M. The aperture ratios of the matrix 410R are substantially equal to each other, that is, the aperture ratio of the region where the first axial electrode 420 and the second axial electrode 430 overlap each other is substantially equal to the first axial electrode 420 and the second axis. The aperture ratio of the region where the electrodes 430 do not overlap each other. For example, as shown in FIG. 9, the first substrate 410 can define a plurality of unit matrices 410R arranged in a 5 by 5 array manner, and each unit matrix 410R can be A node N that is evenly arranged in a 5 by 5 array is defined. As shown in FIG. 10, the bridge wire 450 of the present embodiment has a straight line shape, but is not limited thereto. Except for the unit matrix 410R where the bridge wire 450 is located, that is, the second row of the third row in the tenth row to the unit matrix 410R of the fourth row of the third column, each of the remaining unit matrices 410R The total number of nodes N occupied by the first metal mesh 420M or/and each of the second metal meshes 430M is 15 points. Since the bridge line 450 in the third row of the second row of the unit matrix 410R, the third column of the third row of the unit matrix 410R, and the third column of the fourth row of the unit matrix 410R affects three nodes N, five nodes N and 3 nodes N, so according to this situation, the total number of nodes N occupied by each first metal mesh 420M in the unit matrix 410R of the second row of the third row can be adjusted to 12 points, and the unit matrix of the third row of the third row The total number of nodes N occupied by each of the first metal grids 420M and the second metal grids 430M in the 410R is adjusted to 10 points and the first metal grids 420M in the unit matrix 410R of the fourth row of the third row are occupied. The total number of nodes N is adjusted to 12 points, so that the aperture ratio of each unit matrix 410R of the presence or absence of the bridge line 450 can be substantially maintained in an equal condition, so that the first axial electrode 420 and the second axial electrode 430 can be mutually The degree of decrease in the aperture ratio due to the influence of the bridge wire 450 in the overlap region is improved. In addition, the difference in aperture ratio between each unit matrix 410R is preferably less than 5%, so as to reduce the visibility problem caused by the decrease of the aperture ratio in the region where the first axial electrode 420 and the second axial electrode 430 overlap each other. Further, the effect of improving the appearance quality of the touch panel 400 is achieved. It should be noted that the creation is not limited to the above-mentioned unit matrix 410R and the number and arrangement of the corresponding nodes N, and the visual design needs to be adjusted.

Please refer to Figure 11. FIG. 11 is a schematic view showing a touch panel of a fifth preferred embodiment of the present invention. As shown in FIG. 11 , the touch panel 500 includes a first substrate 110 , a first axial electrode 120 , a second axial electrode 130 , and an insulating layer 540 . The first axial electrode 120 is disposed on the first substrate 110, the insulating layer 540 is disposed on the first axial electrode 120 and the first substrate 110, and the second axial electrode 130 is disposed on the insulating layer 540. The insulating layer 540 at least partially contacts the first substrate 110 for enhancing the strength of the first substrate 110 against impact. In other words, the first axial electrode 120 and the second axial electrode 130 are disposed on the same surface of the first substrate 110, and the insulating layer 540 is disposed on the first axial electrode 120 and the second axial electrode 130. The first axial electrode 120 and the second axial electrode 130 are electrically insulated. The insulating layer 540 may include an inorganic material such as silicon nitride, silicon oxide, silicon oxynitride and titanium oxide (for example, titanium oxide, TiO ₂ ), and an organic material such as a lanthanide (SiOR). _x , wherein R is an alkyl group), Polyimide (PI), Polypropylene (PP), Polyethylene (PE), Polycarbonate (PC), Polymethyl methacrylate (methyl methacrylate, PMMA), polyether ketone (PEK) or cyclic olefin copolymer (COC) or photosensitive resin, for example, positive and negative photoresist, and the resin may be, for example, an acrylic system. The epoxy resin, the phenolic system, and the thermoplastic or thermosetting resin may be, for example, an acrylic, epoxy, phenolic or other suitable insulating material. The substrate 110 includes a glass substrate, a sapphire substrate, a cover lens, a plastic substrate, a soft cover plate, a flexible plastic substrate such as a plastic film, a thin glass substrate (thickness less than 0.25 mm), or a substrate of a display. The cover plate is provided with a decorative layer (not shown) on at least one side, and the substrate of the display may be a color filter substrate of a liquid crystal display or a package cover of an organic light emitting display. The above plastic film may include a polyimide (PI) film, but is not limited thereto. The detailed features of the first axial electrode 120 and the second axial electrode 130 of the present embodiment have been described in the above embodiments, and thus will not be described herein. It should be noted that the first axial electrode and the second axial electrode of the second preferred embodiment, the third preferred embodiment and the fourth preferred embodiment (such as the first axial electrode in FIG. 4) 220 and the second axial electrode 230, the first axial electrode 320 and the second axial electrode 330 in FIG. 8 and the first axial electrode 420 and the second axial electrode 430 in FIG. 10 may also be The embodiment is disposed on the same surface of the first substrate 110, and the insulating layer 540 is disposed between the first axial electrode and the second axial electrode. In addition, the insulating blocks in the above embodiments may be replaced by the insulating layer 540 of the embodiment, and the bridge wires in the above embodiments may be integrally formed with the connected first metal mesh without the interface. In other words, the bridge wires in the above embodiments may be formed together with the first metal mesh by performing a patterning process on the same metal layer, but are not limited thereto.

Please refer to Figure 12. FIG. 12 is a schematic view showing a touch panel of a sixth preferred embodiment of the present invention. As shown in FIG. 12 , the touch panel 600 includes a first substrate 110 , a second substrate 610 , a first axial electrode 120 , a second axial electrode 130 , and an adhesive layer 640 . The second substrate 610 is disposed opposite to the first substrate 110. The second substrate 610 has a first surface 610A and an opposite second surface 610B. The first surface 610A faces the upper surface 110A of the first substrate 110. At least one of the first substrate 110 and the second substrate 610 may include a glass substrate, a hard cover plate, a plastic substrate, a soft cover plate, a flexible plastic substrate such as a plastic film, and a thin glass substrate (thickness less than 0.25 mm) Or a substrate of a display, wherein the cover plate is provided with a decorative layer (not shown) on at least one side, and the substrate of the display may be a color filter substrate of a liquid crystal display or a package cover of an organic light emitting display. The above plastic film may include a polyimide (PI) film, but is not limited thereto. In the embodiment, the first axial electrode 120 is disposed on the first substrate 110, and the second axial electrode 130 is disposed on the second substrate 610. More specifically, the first axial electrode 120 of the embodiment is disposed on the upper surface 110A of the first substrate 110, and the second axial electrode 130 is disposed on the first surface 610A of the second substrate 610, but This creation is not limited to this. In other embodiments of the present invention, the first axial electrode 120 may be disposed on the lower surface 110B of the first substrate 110 or/and the second axial electrode 130 may be disposed on the second surface 610B of the second substrate 610. . The detailed features of the first axial electrode 120 and the second axial electrode 130 of the present embodiment have been described in the above embodiments, and thus will not be described herein. It should be noted that the first axial electrode and the second axial electrode of the second preferred embodiment, the third preferred embodiment and the fourth preferred embodiment (such as the first axial electrode in FIG. 4) 220 and the second axial electrode 230, the first axial electrode 320 and the second axial electrode 330 in FIG. 8 and the first axial electrode 420 and the second axial electrode 430 in FIG. 10 may also be The embodiment is disposed on the first substrate 110 and the second substrate 610, respectively. In addition, the adhesive layer 640 is disposed between the first substrate 110 and the second substrate 610 for bonding the first substrate 110 and the second substrate 610. The adhesive layer 640 preferably includes an optical clear adhesive (OCA), a pressure sensitive adhesive (PSA) or other adhesive material suitable for bonding or/and insulating effects. In addition, the insulating block in the above embodiment can be The adhesive layer 640 of the embodiment is replaced, and in the above embodiment, the bridge wire can be integrally formed with the connected first metal mesh without the interface. In other words, the bridge wire in the above embodiment may be formed together with the first metal mesh by performing a patterning process on the same metal layer, but is not limited thereto.

In summary, the touch panel of the present invention utilizes a metal mesh to form different axial electrodes, and adjusts the shape of the metal mesh or the bridge wire so that the aperture ratios of the different axial electrode intersections are substantially equal to different The aperture ratio of the axial electrode is not overlapped, so that the effect of improving the appearance quality can be achieved by using the metal mesh to improve the touch reaction speed of the touch panel.

110‧‧‧First substrate

110A‧‧‧Upper surface

110B‧‧‧ lower surface

120‧‧‧First axial electrode

120M‧‧‧First Metal Grid

130‧‧‧Second axial electrode

130M‧‧‧Second metal grid

500‧‧‧ touch panel

540‧‧‧Insulation

Z‧‧‧ direction

Claims (23)

A touch panel includes: a first substrate; at least one first axial electrode disposed on the first substrate and extending along a first direction, wherein the first axial electrode comprises a plurality of first metal grids The at least one second axial electrode is disposed on the first substrate and extends along a second direction, wherein the second axial electrode comprises a plurality of second metal grids, the first axial electrode system and the first The two axial electrodes at least partially overlap in a direction perpendicular to the first substrate, and an opening ratio of a region where the first axial electrode and the second axial electrode overlap each other is substantially equal to the first axial electrode and The opening ratio of the region where the second axial electrodes do not overlap each other; and an insulating layer disposed on the first substrate, wherein the first axial electrode and the second axial electrode are disposed on the first substrate On the same surface, the insulating layer is disposed between the first axial electrode and the second axial electrode. The touch panel of claim 1, wherein the insulating layer at least partially contacts the first substrate. The touch panel of claim 1, wherein a region where the first axial electrode and the second axial electrode overlap each other and a region where the first axial electrode and the second axial electrode do not overlap each other The difference in aperture ratio is less than 5%. The touch panel of claim 1, wherein the pattern of the first metal mesh is in a region where the first axial electrode and the second axial electrode overlap each other and the pattern of the second metal mesh. The touch panel of claim 1, wherein at least a portion of the first metal mesh and at least a portion of the second metal mesh overlap each other in a direction perpendicular to the first substrate, and each The aperture ratio of the first metal mesh and the corresponding second metal mesh is substantially equal to each An aperture ratio at which the first metal mesh and each of the second metal meshes do not overlap each other. The touch panel of claim 1, wherein the first axial electrode further comprises at least one bridge wire disposed between the first metal meshes separated from each other for electrically connecting the first metal meshes grid. The touch panel of claim 6, wherein the bridge wire overlaps one of the edges of the at least one second metal mesh in a direction perpendicular to the first substrate. The touch panel of claim 6, wherein the pattern of the bridge wire is in an area where the first axial electrode and the second axial electrode overlap each other and at least one edge of the second metal mesh The graphics match. The touch panel of claim 6, wherein the first substrate further comprises a plurality of unit matrices arranged in an array, and the first axial electrode, the second axial electrode or the bridging system is disposed on the first In the unit matrix, the aperture ratios of the unit matrices are substantially equal to each other. The touch panel of claim 1, wherein each of the first metal mesh and each of the second metal meshes comprises a metal mesh of a regular shape. The touch panel of claim 1, wherein each of the first metal mesh and each of the second metal meshes comprises an irregularly shaped metal mesh. The touch panel of claim 1, wherein the first substrate comprises a glass substrate, a sapphire substrate, a hard cover plate, a plastic substrate, a soft cover plate, a flexible plastic substrate, a thin glass substrate or a The substrate of the display. A touch panel includes: a first substrate; a second substrate disposed opposite to the first substrate; at least one first axial electrode disposed on the first substrate and extending along a first direction, wherein the The first axial electrode includes a plurality of first metal grids; and the at least one second axial electrode is disposed on the second substrate and extends along a second direction, wherein the second axial electrode comprises a plurality of second a metal mesh, the first axial electrode and the second axial electrode at least partially overlapping in a direction perpendicular to the first substrate, and the first axial electrode and the second axial electrode overlap each other The aperture ratio is substantially equal to the aperture ratio of the region where the first axial electrode and the second axial electrode do not overlap each other. The touch panel of claim 13, wherein a region where the first axial electrode and the second axial electrode overlap each other and a region where the first axial electrode and the second axial electrode do not overlap each other The difference in aperture ratio is less than 5%. The touch panel of claim 13, wherein the pattern of the first metal mesh is in a region where the first axial electrode and the second axial electrode overlap each other and the pattern of the second metal mesh. The touch panel of claim 13, wherein at least a portion of the first metal mesh and at least a portion of the second metal mesh overlap each other in a direction perpendicular to the first substrate, and each The aperture ratio of the first metal grid overlapping the corresponding second metal grid is substantially equal to the aperture ratio of each of the first metal grid and each of the second metal grids not overlapping each other. The touch panel of claim 13, wherein the first axial electrode further comprises at least one bridge wire disposed between the first metal meshes separated from each other for electrically connecting the first metal meshes grid. The touch panel of claim 17, wherein the bridge wire overlaps one of the edges of the at least one second metal mesh in a direction perpendicular to the first substrate. The touch panel of claim 17, wherein the pattern of the bridge wire is in a region where the first axial electrode and the second axial electrode overlap each other and at least one edge of the second metal mesh The graphics match. The touch panel of claim 17, wherein the first substrate further comprises a plurality of unit matrices arranged in an array, and the first axial electrode, the second axial electrode or the bridge line is disposed on the first In the unit matrix, the aperture ratios of the unit matrices are substantially equal to each other. The touch panel of claim 13, wherein each of the first metal mesh and each of the second metal meshes comprises a metal mesh of a regular shape. The touch panel of claim 13, wherein each of the first metal mesh and each of the second metal meshes comprises an irregularly shaped metal mesh. The touch panel of claim 13, wherein the first substrate or/and the second substrate comprises a glass substrate, a sapphire substrate, a hard cover plate, a plastic substrate, a soft cover plate, and a flexible plastic substrate. a thin glass substrate or a substrate of a display.