TW201602854A - Touch panel - Google Patents

Abstract

A touch panel includes a plurality of touch electrodes. Each touch electrode includes a plurality of first mesh units electrically connected to each other and a plurality of second mesh units electrically connected to each other. The second mesh units are electrically connected to the first mesh units. The second mesh units are disposed on an edge of each touch electrode and surround the first mesh units. Each second mesh unit is a closed pattern being non-rectangular.

Description

Touch panel

The present invention relates to a touch panel, and more particularly to a touch panel including a grid unit.

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. At present, the technology development of touch panels is very diverse, and the more common technologies include resistive, capacitive, and optical. In a conventional resistive or capacitive touch panel, the sensing electrodes for performing touch detection are generally formed of a transparent conductive material such as indium tin oxide (ITO) in order to avoid affecting the display effect. Since the resistivity of the transparent conductive material is generally higher than that of the metal conductive material, the use of the transparent conductive material to form the sensing electrode may cause an overall high resistance value and affect the reaction speed. Therefore, in the related art, a metal mesh configured by a metal line has been developed to replace the transparent conductive material to form an electrode to improve the reaction speed. As shown in FIG. 1 , in a conventional touch panel having a metal mesh, two or two electrically independent touch sensing electrodes 110 are separated at predetermined intervals, wherein each touch sensing electrode 110 is connected to each other. The metal mesh 110M is configured, and a plurality of phase-separated linear auxiliary electrodes 110D are further disposed in the predetermined interval between the touch sensing electrodes 110. However, for the sake of design, the predetermined intervals may be arranged in a straight line along a predetermined axial direction, so that the tip 110T is easily formed at the edge of each touch sensing electrode 110, and the tip 110T is easily tip-discharged with the linear auxiliary electrode 110D. The phenomenon causes static electricity damage and reduces the reliability of the touch panel.

One of the objectives of the present invention is to provide a touch panel for arranging a grid unit having a closed pattern on the edge of the touch electrode to prevent electrostatic damage caused by an instantaneous large current intrusion, thereby improving the processing of the touch panel. Rate and product reliability.

An embodiment of the invention provides a touch panel including a plurality of touch electrodes. Each of the touch electrodes includes a plurality of first grid cells electrically connected to each other and a plurality of second grid cells electrically connected to each other. The second grid cells are electrically connected to the first grid cells, and the second grid cells are located at the edges of the touch electrodes and surround the first grid cells. Each of the second grid cells is a non-rectangular and closed pattern.

Another embodiment of the present invention provides a touch panel in which each of the first grid cells is different in shape from each of the second grid cells.

Another embodiment of the present invention provides a touch panel, wherein each of the second grid cells includes at least two side edges and a connecting side edge, and the two ends of the connecting side edges are respectively connected to the two side edges.

Another embodiment of the present invention provides a touch panel in which the connecting sides are in a straight line.

Another embodiment of the present invention provides a touch panel in which a connecting side is a sine wave curve.

Another embodiment of the present invention provides a touch panel in which a connecting side has a circular arc structure at a joint with one side.

Another embodiment of the present invention provides a touch panel in which a radius of curvature of a circular arc structure is greater than 0 and less than 30 mm.

Another embodiment of the present invention provides a touch panel, which further includes at least one auxiliary electrode disposed between two adjacent touch electrodes and insulated from the touch electrodes.

Another embodiment of the present invention provides a touch panel, wherein the auxiliary electrode includes at least one branch.

Another embodiment of the present invention provides a touch panel having a light transmissive area and a light shielding area on at least one side of the light transmissive area. The touch panel further includes a substrate and a decorative layer, and the decorative layer is disposed on the substrate. The touch electrodes are disposed on the substrate, and the substrate comprises a tempered glass, a transparent ceramic substrate, an alumina substrate or a composite plastic laminate, and the thickness of the substrate is between 0.2 mm and 2 mm.

Another embodiment of the present invention provides a touch panel, further comprising a light absorbing layer disposed between the substrate and each of the first grid cells and between the substrate and each of the second grid cells, and each of the first grid cells and Each of the second grid units is made of a metal material.

Another embodiment of the present invention provides a touch panel, further comprising a substrate, wherein the touch electrodes are disposed on the substrate, and the substrate comprises a polyimide film, a thin glass substrate or a display substrate, and The substrate of the display comprises a color filter substrate, an active array substrate or a package cover of an organic light emitting display.

Another embodiment of the present invention provides a touch panel, wherein the touch electrode includes a plurality of first axial electrodes and a plurality of second axial electrodes that are staggered and insulated from each other.

Another embodiment of the present invention provides a touch panel, wherein each of the first axial electrodes includes a plurality of first sub-electrodes and at least one first connecting portion, and the first connecting portion is disposed on the two adjacent first sub-electrodes. For electrically connecting the first sub-electrodes, each of the second axial electrodes includes a plurality of second sub-electrodes and at least one second connecting portion, and the second connecting portion is disposed between the two adjacent second sub-electrodes, The second sub-electrode is electrically connected.

Another embodiment of the present invention provides a touch panel, further comprising an insulating member disposed between the first axial electrode and the second axial electrode for electrically insulating the first axial electrode and the second axial electrode .

Another embodiment of the present invention provides a touch panel, wherein materials of each of the first mesh unit and each of the second mesh units respectively include at least one of aluminum, copper, silver, chromium, titanium, and molybdenum, and the above materials. a composite layer or an alloy of the above materials.

Another embodiment of the present invention provides a touch panel, wherein an opening area surrounded by each first grid unit is larger than an opening area surrounded by each second grid unit.

Another embodiment of the present invention provides a touch panel, wherein each of the first grid cells is a non-rectangular pattern.

Another embodiment of the present invention provides a touch panel, wherein a material of the touch electrode includes at least one composite layer of a transparent conductive material layer and a metal material layer, and the first mesh unit and the second mesh The unit is composed of a metal material layer, and the transparent conductive material layer overlaps with the metal material layer and covers an opening surrounded by each of the first mesh units and an opening surrounded by each of the second mesh units.

110‧‧‧Touch sensing electrode

110D, 223‧‧‧ auxiliary electrode

110M‧‧‧Metal Grid

110T‧‧‧ cutting-edge

201-204, 301-309, 401‧‧‧ touch panel

210‧‧‧Touch electrode

210C‧‧‧ signal wire

210R‧‧‧ touch signal receiving electrode

210T‧‧‧ touch signal drive electrode

210X‧‧‧first axial electrode

210Y‧‧‧second axial electrode

221‧‧‧First grid unit

221H‧‧‧ first opening

222‧‧‧Second grid unit

222A‧‧‧ side

222B‧‧‧Connected side

222C‧‧‧Arc structure

222H‧‧‧ second opening

230‧‧‧Substrate

230M‧‧‧decorative layer

240‧‧‧Insulating components

240P‧‧‧Insulation block

250‧‧‧ adhesive layer

260‧‧‧ opposite substrate

271‧‧‧Metal material layer

272‧‧‧Transparent conductive material layer

310‧‧‧Light absorbing layer

PD‧‧‧ scheduled interval

R‧‧‧ radius of curvature

R1‧‧‧Light transmission area

R2‧‧‧ shading area

X‧‧‧ first direction

X1‧‧‧ first subelectrode

X2‧‧‧ first connection

Y‧‧‧second direction

Y1‧‧‧Second subelectrode

Y2‧‧‧Second connection

Z‧‧‧Vertical projection direction

FIG. 1 is a schematic view showing a metal grid of a conventional touch panel.

FIG. 2 is a schematic view of a touch panel according to a first embodiment of the present invention.

Fig. 3 is a partially enlarged schematic view of Fig. 2.

FIG. 4 is a schematic view of a touch panel according to a second embodiment of the present invention.

FIG. 5 is a schematic diagram of a touch panel according to a third embodiment of the present invention.

FIG. 6 is a schematic diagram of a touch panel according to a fourth embodiment of the present invention.

FIG. 7 is a schematic diagram of a touch panel according to a fifth embodiment of the present invention.

FIG. 8 is a schematic diagram of a touch panel according to a sixth embodiment of the present invention.

FIG. 9 is a top plan view of a touch panel according to a seventh embodiment of the present invention.

FIG. 10 is a side view showing the touch panel of the seventh embodiment of the present invention.

11 is a schematic view of a touch panel according to an eighth embodiment of the present invention.

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

FIG. 13 is a schematic view showing a touch panel according to a tenth embodiment of the present invention.

FIG. 14 is a schematic view showing a touch panel of an eleventh embodiment of the present invention.

Figure 15 is a partial enlarged view of Figure 14

FIG. 16 is a schematic view showing a touch panel of a twelfth embodiment of the present invention.

Figure 17 is a schematic view showing a touch panel of a thirteenth embodiment of the present invention.

FIG. 18 is a schematic view showing a touch panel of a fourteenth 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 Figures 2 and 3. FIG. 2 is a partial schematic view showing the touch panel of the first embodiment of the present invention. Fig. 3 is a partially enlarged schematic view of Fig. 2. For convenience of explanation, this The various figures of the invention are merely illustrative for easier understanding of the invention, and the detailed proportions thereof can be adjusted as required by the design. As shown in FIG. 2 and FIG. 3 , the touch panel 201 includes a plurality of touch electrodes 210 . Each of the touch electrodes 210 includes a plurality of first grid cells 221 electrically connected to each other and a plurality of second grid cells 222 electrically connected to each other. The first grid cells 221 are electrically connected to the plurality of second grid cells 222. The second grid unit 222 is located at the edge of each touch electrode 210 and surrounds the first grid unit 221 . Each of the second grid units 222 is a non-rectangular and closed pattern. In this embodiment, by designing both the first mesh unit 221 and the second mesh unit 222 to be non-rectangular, the touch electrode 210 and the pixel can be prevented from generating a moire effect. The touch electrodes 210 may be disposed on the same surface of the same substrate, on opposite sides of the same substrate, or on different substrates. Each of the first grid unit 221 and each of the second grid units 222 is preferably a grid unit made of a metal material, thereby effectively reducing the impedance of the system, facilitating detection of the touch signal and improving sensitivity, and further The size of the touch panel is increased, but the invention is not limited thereto. In detail, the material of the touch electrode 210 may include at least one of a metal material such as aluminum (Al), copper (Cu), silver (Ag), chromium (Cr), titanium (Ti), and molybdenum (Mo), respectively. An alloy of the above materials, a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), conductive particles, carbon nanotubes , nano-silver, graphene, terpene, a composite layer of the above materials (for example, a composite layer composed of three layers of ITO/Ag/ITO or Mo/Al/Mo) or other suitable conductive materials. Wherein, in the composite layer composed of the transparent conductive material layer and the metal material layer, the first mesh unit 221 and each of the second mesh units 222 may be formed by the metal material layer, and the transparent conductive material layer overlaps with the metal material layer and The opening surrounded by the first mesh unit 221 and the opening surrounded by the second mesh unit 222 are covered. Further, when the touch electrode 210 is made of a highly reflective material such as metal, the visibility of the first mesh unit 221 and the second mesh unit 222 is increased to avoid reflection of the light on the touch electrode 210. In the embodiment of the change, the touch panel 201 may further include a light absorbing layer for reducing the visibility of the touch electrode 210. In detail, the pattern of the light absorbing layer may be substantially the same as the pattern of the first mesh unit 221 and the second mesh unit 222, but is not limited thereto. In other changes In an embodiment, the pattern of the light absorbing layer may also be larger than the pattern of the first grid unit 221 and the second grid unit 222 to increase the shielding rate of the light absorbing layer to prevent the user from observing the first view when viewed from a side view angle. Grid unit 221 and second grid unit 222. For example, the material of the light absorbing layer may be a metal oxide, a resin light absorbing material, a black paint of carbon black or a metal, metal alloy or resin material having a scattering structure on the surface to scatter or absorb ambient light, thereby reducing the first network. The visibility of the cell unit 221 and the second grid unit 222. The metal oxide may, for example, comprise a copper oxide, a chromium oxide, a titanium oxide, a molybdenum oxide or a stacked layer of at least two of the foregoing.

In this embodiment, each of the first mesh units 221 is a hexagonal mesh unit, but the invention is not limited thereto. It is also possible in other embodiments of the invention to use first mesh elements of different shapes such as triangles, rectangles, non-rectangular polygons or irregular shapes. In addition, the shape of the first mesh unit 221 of the embodiment is preferably different from the shape of the second mesh unit 222. Further, each of the first mesh units 221 has an opening area larger than each second mesh. The area of the opening surrounded by the cell unit 222. That is, the aperture ratio provided by any of the second grid cells 222 at the edges of the touch electrodes 210 is lower than the aperture ratio provided by each of the first grid cells 221 . Thereby, it helps to make the edges of the touch electrodes 210 not easily recognized by the human eye. However, the invention is not limited thereto. In other embodiments of the invention, the first grid unit 221 and the second grid unit 222 having the same pattern may also be used as needed.

In this embodiment, since the second grid unit 222 located at the edge of each touch electrode 210 is a closed pattern and does not have a protruding tip, the state of the tip discharge can be avoided, and the static electricity caused by the transient large current intrusion can be reduced. The possibility of destruction further improves the process yield and reliability of the touch panel 201. Further, each of the second mesh units 222 includes at least two side edges 222A and a connecting side edge 222B. The two ends of the connecting side edges 222B are respectively connected to the two side edges 222A, so that the second mesh units 222 are respectively Become a closed loop to achieve the effect of avoiding tip discharge fruit. In this embodiment, each side 222A and the connecting side 222B are respectively a straight line, but the invention is not limited thereto. In other embodiments of the present invention, each of the side edges 222A and the connecting side edges 222B may also be a curved line or an irregular line, respectively. In other words, when designing the grid unit of the embodiment, a plurality of hexagons may be adjacent to each other, and then the edge of the touch electrode 210 is defined by the connection side 222B, that is, a second pattern having a closed pattern is formed. The grid unit 222 is at the edge of the touch electrode 210, and then sets a predetermined interval PD between adjacent touch electrodes 210 of predetermined insulation, wherein the predetermined interval PD is set by removing the grid. This predetermined interval PD is not limited to a single pitch. In addition, in this embodiment, the connection between the connecting side 222B and at least one of the side edges 222A may have a circular arc structure 222C, and the radius of curvature R of the circular arc structure 222C is preferably greater than 0 and less than 30 mm (mm). ), but the invention is not limited thereto. By the arrangement of the arc structure 222C, the state of tip discharge at the junction between the connection side 222B and the side 222A can be further avoided, and the effect of further improving the process yield and product reliability can be achieved.

The different embodiments of the touch panel 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 Figure 4. FIG. 4 is a partial schematic view of a touch panel according to a second embodiment of the present invention. As shown in FIG. 4 , the touch panel 202 of the present embodiment is different from the first embodiment in that the touch panel 202 further includes a plurality of auxiliary electrodes 223 disposed on two adjacent and insulated touch electrodes 210 . Between and insulated from the touch electrode 210. The material of the auxiliary electrode 223 may be the same as the material of the touch electrode 210. Each of the auxiliary electrodes 223 is preferably in an electrically floating state, but is not limited thereto. The auxiliary electrode 223 can be used to fill the gap between the touch electrodes 210 and improve the visual consistency between the touch electrode 210 and the area where the touch electrode 210 is not disposed, thereby reducing the contour of the touch electrode 210, thereby achieving The effect of improving the appearance quality of the touch panel 202. For example, the auxiliary electrode 223 of the embodiment may include at least one branch. For example, the auxiliary electrode 223 may have four branches to form a fishbone electrode, and the extending direction of each branch and the side 222A of each second grid unit 222. The extending direction is the same. Since the spacing between the auxiliary electrode 223 and the second grid unit 222 is very small, the auxiliary electrode 223 can be visually regarded as an extension of the second grid unit 222, thereby compensating the second grid unit 222 and The difference between the graphics in the first grid unit 221 is not limited thereto. In addition, the auxiliary electrode 223 having branches can make the electric field of the touch panel 202 uniform, thereby reducing the complexity of the subsequent controller operation coordinates.

In the above embodiment, when the auxiliary electrode 223 exists in the predetermined interval PD between the adjacent touch electrodes 210, the predetermined interval PD may preferably be between 30 micrometers and 350 micrometers, and the auxiliary electrode 223 and the second grid The distance of unit 222 is preferably less than 30 microns. When the auxiliary electrode 223 is absent from the predetermined interval PD between the adjacent touch electrodes 210, the predetermined interval PD may preferably be less than 30 micrometers. With the above design, the capacitance between the touch electrodes 210 can be prevented from being too large or too small to affect the touch detection, and the human eye can be prevented from distinguishing between the conductive material and the region where the conductive material is disposed.

Please refer to Figure 5. FIG. 5 is a schematic diagram of a touch panel according to a third embodiment of the present invention. As shown in FIG. 5, the touch panel 203 of the present embodiment is different from the first embodiment in that each of the connection sides 222B of the embodiment is preferably a sine wave curve for forming. The second grid unit 222 has a closed pattern, thereby achieving the effect of avoiding tip discharge caused by the edge of the touch electrode 210. In general, since the pixels of the display panel are mostly designed to have straight edges (including vertical and horizontal directions), when the edge of the touch electrode 210 is also designed in a straight line, it is easy to produce a moire effect with the pixels. Accordingly, in this embodiment, the connecting side 222B of the second mesh unit 222 is designed to be sinusoidal, stepped, curved or other shape, which can reduce the occurrence of the moiré effect.

Please refer to Figure 6. FIG. 6 is a schematic diagram of a touch panel according to a fourth embodiment of the present invention. As shown in FIG. 6 , the touch panel 204 of the present embodiment is different from the third embodiment in that the touch panel 204 further includes a plurality of auxiliary electrodes 223 disposed between two adjacent touch electrodes 210 . And insulated from the touch electrode 210. The material of the auxiliary electrode 223 may be the same as the material of the touch electrode 210. The auxiliary electrode 223 is preferably in an electrically floating state, and the auxiliary electrode 223 can be used to fill the gap between the touch electrodes 210 and improve the visual consistency between the touch electrode 210 and the region where the touch electrode 210 is not disposed. Thereby, the contour visibility of the touch electrode 210 is reduced, thereby achieving the effect of improving the appearance quality of the touch panel 204. For example, the auxiliary electrode 223 of the embodiment may include at least one branch. For example, the auxiliary electrode 223 may have four branches to form a fishbone electrode, and the extending direction of each branch and the side 222A of each second grid unit 222. The extending direction is the same. Since the spacing between the auxiliary electrode 223 and the second grid unit 222 is very small, the auxiliary electrode 223 can be visually regarded as an extension of the second grid unit 222, thereby compensating the second grid unit 222 and The difference between the graphics in the first grid unit 221 is not limited thereto. In addition, the auxiliary electrode 223 having branches can make the electric field of the touch panel uniform, thereby reducing the complexity of the subsequent controller operation coordinates.

Please refer to Figure 7. FIG. 7 is a schematic diagram of a touch panel according to a fifth embodiment of the present invention. As shown in FIG. 7 , the touch panel 301 of the present embodiment is different from the first embodiment in that the touch panel 301 further includes a substrate 230 and a plurality of signal wires 210C. The signal wire 210C and the material of the touch electrode 210 can be the same and are produced in the same step. The signal wire 210C may include a mesh structure or a conductive wire having a width of 5 to 40 micrometers, but the invention is not limited thereto. The touch electrodes 210 and the signal wires 210C are disposed on the substrate 230, that is, the substrate 230 serves as a carrier for the touch electrodes 210 and the signal wires 210C. The material of the substrate 230 can be glass or plastic. The substrate 230 may further have a cover protection function, which is provided by a material having high mechanical strength to protect (for example, scratch-resistant) covering materials, which may be a hard material or a flexible toughness. plastic film. Such a substrate 230 having high mechanical strength is, for example, tempered glass, high-hardness plastic, transparent ceramic substrate, alumina substrate or composite plastic laminate. For example, a double-layer composite sheet composed of a stack of methyl methacrylate (PMMA) and polycarbonate (PC) or polyimide (PI), and other known cover sheets. The tempered glass may be formed by chemical or physical strengthening of the glass. However, the substrate 230 can be protected by the cover sheet attached thereto without providing cover protection. In this case, the selection of the substrate 230 can be more diverse. For example, the substrate 230 can include polyimide (Polyimide). A film, a thin glass substrate, a substrate for a display, or other suitable glass or plastic substrate. Preferably, the cover plate is partially provided with a decorative layer (not shown), and the substrate of the display may be a color filter substrate, an active array substrate or a package cover of an organic light emitting display, but This is limited. It should be noted that the thickness of the substrate 230 having the cover protection may be between 0.2 mm and 2 mm, and may be a planar shape or a curved shape, for example, a 2.5D cover glass, but is not limited thereto. In addition, a film layer such as an anti-smudge coating may be selectively disposed on one side of the substrate 230 having a cover protection effect, and the thickness of the film layer is smaller than the thickness of the substrate 230. . In this embodiment, the touch panel 301 can have a light-transmissive region R1 and a light-shielding region R2. The light-shielding region R2 surrounds the light-transmitting region R1, but is not limited thereto. The light-shielding region R2 can be located in the light-transmitting region R1. At least one side. The touch electrodes 210 are mainly disposed in the light-transmitting region R1, and a portion of the touch electrodes 210 may also partially extend to the light-shielding region R2. The signal wire 210C extends from the light-transmitting region R1 to the light-shielding region R2 for electrically connecting with the corresponding touch electrode 210 and electrically connected to an external circuit board (not shown). The width of the signal wire 210C disposed in the light blocking region R2 may be greater than the width of the signal wire 210C disposed in the light transmitting region R1. The touch electrodes 210 are electrically separated from each other on the substrate 230, and can be detected by a self-capacitance touch detection principle, but not limited thereto. . It should be noted that, in addition to the touch electrode 210, each of the signal wires 210C may be formed by the first mesh unit or the second mesh unit as needed, but is not limited thereto.

Please refer to Figure 8. 8 is a diagram showing a touch panel of a sixth embodiment of the present invention. intention. As shown in FIG. 8 , the touch panel 302 of the present embodiment is different from the fifth embodiment in that the touch electrode 210 of the embodiment includes a plurality of touch signal driving electrodes 210T and a plurality of touch signals receiving. Electrode 210R. Each of the signal wires 210C is electrically connected to the corresponding touch signal driving electrode 210T or the touch signal receiving electrode 210R and electrically connected to an external circuit board (not shown). Each of the touch signal driving electrodes 210T and the touch signal receiving electrodes 210R are electrically separated from each other on the substrate 230 for detecting the position of the contact with the mutual capacitance touch detection principle, but This is limited to this. It should be noted that at least one of each of the touch signal driving electrodes 210T, the touch signal receiving electrodes 210R, and the signal wires 210C is composed of at least a portion of the first mesh unit or/and the second mesh unit. Composition. In other words, each of the touch signal driving electrodes 210T, the touch signal receiving electrodes 210R, and the respective signal wires 210C may be formed by the first mesh unit or the second mesh unit as needed, thereby avoiding The state of the tip discharge occurs, but not limited to this.

Please refer to Figure 9 and Figure 10. FIG. 9 is a top view of the touch panel of the seventh embodiment of the present invention, and FIG. 10 is a side view of the touch panel of the embodiment. As shown in FIG. 9 and FIG. 10 , the touch panel 303 of the present embodiment is different from the fifth embodiment in that the touch electrode 210 of the embodiment includes a plurality of first axial electrodes 210X and a plurality of strips. The second axial electrodes 210Y are staggered and insulated from each other for self-capacitive or mutual capacitive touch detection. Each of the first axial electrodes 210X extends along a first direction X, and each of the second axial electrodes 210Y extends along a second direction Y, and the first direction X is substantially perpendicular to the second direction Y, but is not This is limited to this. The first axial electrode 210X and the second axial electrode 210Y are formed on opposite sides of the substrate 230 so as to be electrically separated from each other. The thickness of the substrate 230 may be substantially less than or equal to 0.5 mm, but is not limited thereto. It should be noted that each of the first axial electrodes 210X or/and each of the second axial electrodes 210Y is composed of at least a portion of the first grid unit and the second grid unit, thereby avoiding the state of tip discharge. Occurs, but not limited to this.

Please refer to Figure 11. 11 is a schematic view of a touch panel according to an eighth embodiment of the present invention. As shown in FIG. 11 , the touch panel 304 of the present embodiment is different from the seventh embodiment in that the first axial electrode 210X and the second axial electrode 210Y are stacked on the same surface of the substrate 230 . And insulated by an insulating member 240. The insulating member 240 is preferably a layer of insulating material, such as a transparent organic insulating material or a transparent inorganic insulating material, covering the first axial electrode 210X and the substrate 230. Preferably, the dielectric layer having a relatively high thickness can be formed by the transparent organic insulating material, and can be used to absorb an external force from the outside, thereby improving the mechanical strength of the touch panel 304. The substrate 230 of the present embodiment may further have a cover protection function. By providing the decorative layer 230M on the substrate 230 and located in the light shielding region, the signal wire 210C may be shielded by being disposed on the decorative layer 230M, but not This is limited. The signal wire 210C and the material of the touch electrode 210 can be the same and are produced in the same step. The signal wire 210C may include a mesh structure or a conductive wire having a width of 5 to 40 micrometers, but the invention is not limited thereto. On the other hand, in the embodiment, a light absorbing layer 310 is disposed between the substrate 230 and the first axial electrode 210X and between the insulating member 240 and the second axial electrode 210Y, thereby concealing the first axial electrode 210X. And the second axial electrode 210Y, and the light is prevented from being reflected by the first axial electrode 210X and the biaxial electrode 210Y. As shown in FIG. 11 and FIG. 2, since the first axial electrode 210X is composed of a portion of the first mesh unit 221 and the second mesh unit 222, the light absorbing layer 310 is disposed on the substrate 230 and Each of the first mesh unit 221 and the substrate 230 and each of the second mesh units 222, and each of the first mesh units 221 and each of the second mesh units 222 may be made of a highly reflective material such as metal. In addition, the details of the light absorbing layer 310 can be referred to the foregoing, and will not be described herein.

Please refer to Figure 12. FIG. 12 is a schematic view showing a touch panel of a ninth embodiment of the present invention. As shown in FIG. 12 , the touch panel 305 of the present embodiment is different from the seventh embodiment in that the touch panel 305 of the embodiment further includes a pair of substrates 260 , a counter substrate 260 and a substrate 230 . The first axial electrode 210X and the second axial electrode 210Y are respectively disposed on the substrate 230 and the opposite substrate 260, and then bonded to the substrate 230 by an adhesive layer 250. The opposite substrate 260. The adhesive layer 250 preferably comprises a solid or liquid optical adhesive (OCA), a pressure sensitive adhesive (PSA) or other suitable bonding material.

Please refer to Figure 13. FIG. 13 is a schematic view showing a touch panel according to a tenth embodiment of the present invention. As shown in FIG. 13 , the touch panel 306 of the present embodiment is different from the eighth embodiment in that each of the first axial electrodes 210X includes a plurality of first sub-electrodes X1 and a plurality of first connecting portions X2 . The first connecting portion X2 is disposed between the two adjacent first sub-electrodes X1 for electrically connecting the first sub-electrodes X1. Each of the second axial electrodes 210Y includes a plurality of second sub-electrodes Y1 and a plurality of second connecting portions Y2. The second connecting portion Y2 is disposed between the two adjacent second sub-electrodes Y1 for electrically connecting the second sub-electrodes Y1. The insulating member 240 of the present embodiment may include a plurality of insulating blocks 240P respectively disposed between the first connecting portion X2 and the second connecting portion Y2 for electrically isolating the first axial electrode 210X and the second axial electrode 210Y. But it is not limited to this. The insulating block 240P may include inorganic materials such as tantalum nitride, tantalum oxide and hafnium oxynitride, organic materials such as acrylic resins or other suitable materials. In addition, it should be noted that at least one of each of the first sub-electrode X1, the first connection portion X2, each of the second sub-electrodes Y1, and each of the second connection portions Y2 of the embodiment is at least partially The first grid unit and the second grid unit are formed. In other words, each of the first sub-electrode X1, each of the first connecting portions X2, each of the second sub-electrodes Y1, and each of the second connecting portions Y2 may be at least partially composed of at least a portion of the first mesh unit and the second mesh. The unit is constructed to avoid the occurrence of tip discharge, but is not limited thereto.

Please refer to Figure 14 and Figure 15. FIG. 14 is a partial schematic view showing the touch panel of the eleventh embodiment of the present invention. Fig. 15 is a partially enlarged schematic view of Fig. 14. As shown in FIG. 14 and FIG. 15 , in the touch panel 307 of the embodiment, the first sub-electrode X1 and the second sub-electrode Y1 are both by the first grid unit 221 and the second grid unit 222 . Composition. The insulating blocks 240P are respectively disposed between the first connecting portion X2 and the second connecting portion Y2. The auxiliary electrode 223 is disposed between the first axial electrode 210X and the second axial electrode 210Y, thereby reducing the first axial electrode 210X and the first The pattern of the two-axis electrode 210Y is conspicuous, thereby achieving the effect of improving the appearance quality of the touch panel 307. The second grid cells 222 are respectively disposed at edges of the first sub-electrode X1 and the second sub-electrode Y1 to avoid between the first sub-electrode X1 and the auxiliary electrode 223 and between the second sub-electrode Y1 and the auxiliary electrode 223. The state of the tip discharge occurs.

Please refer to Figure 16. FIG. 16 is a schematic view showing a touch panel of a twelfth embodiment of the present invention. As shown in FIG. 16 , the touch panel 308 of the present embodiment is different from the eleventh embodiment in that the touch panel 308 can include a plurality of first connecting portions X2 disposed on two adjacent first sub-electrodes. Between X1, the two adjacent first sub-electrodes X1 are electrically connected. The plurality of first connecting portions X2 are disposed on the insulating blocks 240P and are in contact with the first sub-electrodes X1 provided on the substrate 230. Since the line width of each of the first connecting portions X2 is less than 10 micrometers, the insulating blocks 240P are likely to be broken, the line width is thinner than a predetermined size, or easily peeled off, and the plurality of first connecting portions X2 can be disposed. The effect of disconnection when a single strip of the first connecting portion X2 is broken is reduced, thereby improving process yield and product reliability.

Please refer to Figure 17. Figure 17 is a schematic view showing a touch panel of a thirteenth embodiment of the present invention. As shown in FIG. 17, the touch panel 309 of the present embodiment is different from the above-described twelfth embodiment in that the touch panel 309 can include a plurality of second connecting portions Y2 disposed on two adjacent second sub-electrodes. Between the two adjacent sub-electrodes. The insulating block 240P exposes both ends of the second connecting portion Y2, and the second sub-electrode may cover both ends of the second connecting portion Y2 and the insulating block 240P and is isolated from the first connecting portion X2. By the arrangement of the plurality of second connecting portions Y2, the influence when the single second connecting portion Y2 is broken can be reduced, thereby improving the process yield and the reliability of the product.

Please refer to Figure 18. FIG. 18 is a schematic view showing a touch panel of a fourteenth embodiment of the present invention. As shown in FIG. 18, the touch panel 401 of this embodiment is different from the first embodiment described above. The material of the touch electrode 210 may include a composite layer composed of a transparent conductive material layer 272 and a metal material layer 271. The first mesh unit 221 and the second mesh unit 222 are composed of a metal material layer 271. The transparent conductive material layer 272 overlaps the metal material layer 271 in a vertical projection direction Z and covers an opening surrounded by each of the first mesh units 221 (for example, one of the first openings 221H shown in FIG. 18) and each An opening surrounded by the second mesh unit 222 (for example, one of the second openings 222H shown in FIG. 18). In addition, the area of the first opening 221H surrounded by the first grid unit 221 is preferably larger than the area of the second opening 222H surrounded by the second grid unit 222, but is not limited thereto.

In summary, the touch panel of the present invention is configured to provide a grid unit with a closed pattern on the edge of the touch electrode to avoid electrostatic damage caused by an instantaneous large current intrusion, thereby improving the processing yield of the touch panel. With product reliability. In addition, the present invention further utilizes an auxiliary electrode disposed between the touch electrodes to fill the gap between the touch electrodes and improve the pattern consistency between the touch electrodes and the region where the touch electrodes are not disposed, thereby reducing the touch. The pattern of the control electrode is conspicuous, thereby achieving the effect of improving the appearance quality of the touch panel.

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.

201‧‧‧ touch panel

210‧‧‧Touch electrode

221‧‧‧First grid unit

222‧‧‧Second grid unit

X‧‧‧ first direction

Y‧‧‧second direction

Z‧‧‧Vertical projection direction

Claims (19)

A touch panel includes: a plurality of touch electrodes, each of the touch electrodes includes: a plurality of first grid cells, the first grid cells are electrically connected to each other; and a plurality of second grid cells, The second grid cells are electrically connected to each other, wherein the second grid cells are electrically connected to the first grid cells, and the second grid cells are located at edges of the touch electrodes and surround the The first grid cells are equal, and each of the second grid cells is a non-rectangular and closed pattern. The touch panel of claim 1, wherein each of the first grid cells is different in shape from each of the second grid cells. The touch panel of claim 1, wherein each of the second grid units comprises at least two sides and a connecting side, and the two ends of the connecting side are respectively connected to the two sides. The touch panel of claim 3, wherein the connecting side is a straight line. The touch panel of claim 3, wherein the connecting side is a sine wave curve. The touch panel of claim 3, wherein the connection side has a circular arc structure at a connection with one of the side edges. The touch panel of claim 6, wherein the radius of curvature of the circular arc structure is greater than 0 and less than 30 mm. The touch panel of claim 1, further comprising at least one auxiliary electrode disposed on two adjacent ones And between the touch electrodes, and the auxiliary electrode is insulated from the touch electrodes. The touch panel of claim 8, wherein the auxiliary electrode comprises at least one branch. The touch panel of claim 1 , wherein the touch panel has a light-transmissive area and a light-shielding area, the light-shielding area is located on at least one side of the light-transmissive area, and the touch panel further comprises a substrate and a decoration a layer of the decorative layer disposed on the substrate and located in the light-shielding region, the touch electrodes are disposed on the substrate, and the substrate comprises a tempered glass, a transparent ceramic substrate, an alumina substrate or a composite plastic layer plate, and The substrate has a thickness of between 0.2 mm and 2 mm. The touch panel of claim 1, further comprising a light absorbing layer disposed between the substrate and each of the first grid unit and the substrate and each of the second grid units, and each of the first grids The cell unit and each of the second grid cells are made of a metal material. The touch panel of claim 1, further comprising a substrate, wherein the touch electrodes are disposed on the substrate, the substrate comprising a polyimide film, a thin glass substrate or a display substrate, and The substrate of the display comprises a color filter substrate, an active array substrate or a package cover of an organic light emitting display. The touch panel of claim 1, wherein the touch electrodes comprise a plurality of first axial electrodes and a plurality of second axial electrodes are staggered and insulated from each other. The touch panel of claim 13, wherein each of the first axial electrodes comprises a plurality of first sub-electrodes and at least one first connecting portion, wherein the first connecting portion is disposed at two adjacent first ones Between the electrodes, for electrically connecting the first sub-electrodes, each of the second axial electrodes includes a plurality of second sub-electrodes and at least one second connecting portion, the second connecting portion being disposed at two adjacent ones Between the second sub-electrodes, the second sub-electrodes are electrically connected. The touch panel of claim 13 further comprising an insulating member disposed between the first axial electrodes and the second axial electrodes for electrically insulating the first axial electrodes from the Wait for the second axial electrode. The touch panel of claim 1, wherein the materials of each of the first grid unit and each of the second grid units comprise at least one of aluminum, copper, silver, chromium, titanium, and molybdenum, respectively. a composite layer or an alloy of the above materials. The touch panel of claim 1, wherein an opening area surrounded by each of the first grid units is larger than an opening area surrounded by each of the second grid units. The touch panel of claim 1, wherein each of the first grid cells is a non-rectangular pattern. The touch panel of claim 1, wherein the material of the touch electrodes comprises at least one composite layer of a transparent conductive material layer and a metal material layer, and the first grid unit and the second layer The grid unit is composed of the metal material layer, and the at least one transparent conductive material layer overlaps the metal material layer and covers the opening surrounded by the first grid unit and the second grid unit Opening.