TW201638745A - Touch device - Google Patents

Abstract

A touch device includes a light transmissive cover, a tenacious transparent layer, a touch function layer, and a hard transparent layer. The tenacious transparent layer is located on a surface of the light transmissive cover, and the elastic modulus of the tenacious transparent layer is smaller than that of the light transmissive cover. The hard transparent layer and the touch function layer are at a side of the tenacious transparent layer facing away from the light transmissive cover, and the elastic modulus of the hard transparent layer is greater than that of the tenacious transparent layer.

Description

Touch device

The invention relates to a touch device.

In a touch device of a TOL (touch on lens) or OGS (one glass solution) structure, a touch function layer (for example, an ITO layer) is directly formed on a cover glass. Generally, the thickness of the touch function layer is very thin and the brittleness is high. When the glass cover is broken by the external force in the vertical direction, the touch function layer on the glass cover is also broken, resulting in the malfunction of the touch device, for example, The touch function is disabled, causing inconvenience to the user.

In addition, in some designs, a tough protective layer is added between the glass cover and the touch function layer to enhance the impact capability of the touch device. In such a design, when the glass cover is broken by the external force in the vertical direction, the touch function layer may not be damaged by the external force in the vertical direction due to the buffer protection of the protective layer. However, the force or crack of the glass cover plate produces a lateral tensile force. Since the protective layer has toughness, the lateral tensile force may not cause the tough protective layer to be cracked, but the thickness of the touch function layer is very thin, and generally A hard, brittle material, which causes the protective layer to not break but the touch function layer breaks due to lateral tension. Or when the crack formed by the glass cover is broken, the protective layer and the touch functional layer may both be broken due to the lateral pulling force.

One aspect of the present invention is a touch device.

According to an embodiment of the invention, a touch device includes a transparent cover, a tough transparent layer, a touch function layer, and a rigid transparent layer. The tough transparent layer is located on the surface of the transparent cover plate, and the elastic modulus of the tough transparent layer is smaller than the elastic modulus of the transparent cover plate. The rigid transparent layer and the touch function layer are located on a side of the tough transparent layer facing away from the transparent cover, and the elastic modulus of the rigid transparent layer is greater than the elastic modulus of the tough transparent layer.

In an embodiment of the invention, the elastic modulus of the tough transparent layer is smaller than the elastic modulus of the touch function layer, and the elastic modulus of the rigid transparent layer is greater than the elastic modulus of the touch function layer.

In an embodiment of the invention, the rigid transparent layer has an elastic modulus of from 5.0 x 10 ⁷ Pa to 5.0 x 10 ⁹ Pa.

In an embodiment of the invention, the rigid transparent layer has a Shore hardness of from 50 to 100.

In an embodiment of the invention, the hard transparent layer has a thickness of from 1 μm to 30 μm.

In one embodiment of the invention, the material of the rigid transparent layer contains a resin.

In an embodiment of the invention, the tough transparent layer has an elastic modulus of from ⁴ x ^{10 6} Pa to 5 x ^{10 8} Pa.

In an embodiment of the invention, the tough transparent layer has a thickness of from 0.01 μm to 35 μm.

In one embodiment of the present invention, the material of the tough transparent layer comprises polyimide, polymethyl methacrylate, polycarbonate or polyethylene terephthalate.

In an embodiment of the invention, the touch function layer is located between the tough transparent layer and the rigid transparent layer.

In an embodiment of the invention, the touch function layer has an electrode pattern layer and a circuit layer. The circuit layer is located on at least one side of the electrode pattern layer, and is electrically connected to the electrode pattern layer. The touch device further includes a light shielding layer. The light shielding layer is located between the tough transparent layer and the rigid transparent layer, and the circuit layer and a portion of the electrode pattern layer cover the light shielding layer.

In an embodiment of the invention, the vertical projected area of the tough transparent layer on the surface of the transparent cover is greater than or equal to the vertical projected area of the electrode pattern layer on the surface of the transparent cover.

In an embodiment of the invention, the tough transparent layer and the light shielding layer are retracted and substantially aligned with respect to an edge of the transparent cover plate to expose a part of the surface of the transparent cover plate. The touch device further includes a stop layer. The stop layer covers at least the exposed portion of the surface of the transparent cover plate, the stop layer and the light shielding layer are of the same color, and the viscosity of the stop layer is greater than the viscosity of the light shielding layer.

In an embodiment of the invention, the rigid transparent layer is retracted relative to the edge of the transparent cover, and at least a portion of the rigid transparent layer is located between the stop layer and the touch function layer.

In an embodiment of the invention, the at least part of the stop layer is located between the touch function layer and the rigid transparent layer.

In an embodiment of the invention, the rigid transparent layer is located between the tough transparent layer and the touch function layer, and the tough transparent layer is located between the rigid transparent layer and the transparent cover.

In an embodiment of the invention, the touch function layer has an electrode pattern layer and a circuit layer. The circuit layer is located on at least one side of the electrode pattern layer, and is electrically connected to the electrode pattern layer. The touch device further includes a light shielding layer. The light shielding layer is located on a portion of the surface of the rigid transparent layer facing away from the tough transparent layer, and the circuit layer and a portion of the electrode pattern layer cover the light shielding layer.

In an embodiment of the invention, the tough transparent layer, the rigid transparent layer and the light shielding layer are retracted and substantially aligned with respect to the edge of the transparent cover, so that the surface portion of the transparent cover is exposed. The touch device further includes a stop layer. The stop layer covers at least a portion exposed by the surface of the transparent cover plate, the stop layer and the light shielding layer are of the same color, and the viscosity of the stop layer is greater than the viscosity of the light shielding layer.

In an embodiment of the invention, the material of the transparent cover plate comprises glass, and the material of the touch function layer comprises indium tin oxide.

In the above embodiment of the present invention, the touch device includes a rigid transparent layer and a tough transparent layer having specific properties. When the glass cover is subjected to an external force or rupture in the vertical direction, the tough transparent layer can absorb part of the stress to prevent the touch function layer from being damaged by the external force in the vertical direction. At the same time, due to the high hardness of the rigid transparent layer, the touch function layer has a support and protection function, which ensures that the touch function layer does not break due to the lateral tension of the glass cover plate. In other words, when the glass cover of the touch device of the present invention is impacted, the hard transparent layer and the tough transparent layer cooperate to reduce the impact on the touch function layer, thereby improving the impact resistance of the touch device. And service life, reducing the cost of repairs.

100, 100a, 100b‧‧‧ touch devices

110‧‧‧ display module

120‧‧‧adhesive layer

130‧‧‧hard transparent layer

132, 134‧‧‧ surface

140‧‧‧Transparent cover

142‧‧‧ surface

150‧‧‧Tough transparent layer

160‧‧‧ touch function layer

162‧‧‧electrode pattern layer

164‧‧‧Line layer

170‧‧‧Lighting layer

180‧‧‧stop layer

C1, C2‧‧‧ crack

F, F1~F9‧‧‧ force

FIG. 1 is a cross-sectional view of a touch device according to an embodiment of the invention.

FIG. 2 is a partial enlarged view of the touch device of FIG. 1 .

FIG. 3 is a schematic view showing the touch device of FIG. 2 subjected to an external force in a vertical direction.

FIG. 4 is a schematic view showing the touch device of FIG. 3 subjected to an external force in a vertical direction.

FIG. 5 is a cross-sectional view of a touch device according to an embodiment of the invention.

FIG. 6 is a cross-sectional view of a touch device according to an embodiment of the invention.

FIG. 7 is a partial enlarged view of the touch device of FIG. 6.

FIG. 8 is a schematic view showing the touch device of FIG. 7 subjected to an external force in a vertical direction.

FIG. 9 is a schematic view showing the touch device of FIG. 8 after being subjected to an external force in a vertical direction.

The embodiments of the present invention are disclosed in the following drawings, and the details of However, it should be understood that these practical details are not intended to limit the invention. and also That is, in some embodiments of the invention, these practical details are not necessary. In addition, some of the conventional structures and elements are shown in the drawings in a simplified schematic manner in order to simplify the drawings.

FIG. 1 is a cross-sectional view of a touch device 100 according to an embodiment of the invention. FIG. 2 is a partial enlarged view of the touch device 100 of FIG. 1 . Referring to FIGS. 1 and 2 , the touch device 100 includes a transparent cover 140 , a tough transparent layer 150 , a touch function layer 160 , and a rigid transparent layer 130 . The tough transparent layer 150 is located on the surface 142 of the light transmissive cover 140. The rigid transparent layer 130 and the touch function layer 160 are located on a side of the tough transparent layer 150 facing away from the transparent cover 140. In the present embodiment, the touch function layer 160 is located between the tough transparent layer 150 and the rigid transparent layer 130 and has a sandwich structure, but is not limited to a sandwich structure.

The light transmissive cover plate 140 may be a chemically and/or physically strengthened cover glass having a modulus of elasticity of approximately 5.5 x ^{10 10} Pa. The other surface of the transparent cover 140 opposite the surface 142 is a touch operation surface of the user.

The touch function layer 160 has an electrode pattern layer 162 and a wiring layer 164. The electrode pattern layer 162 is a light-transmissive conductive structure, and may be a single layer or multiple layers for generating a corresponding sensing signal according to a user's touch operation. The circuit layer 164 is located on at least one side of the electrode pattern layer 162 and is electrically connected to the electrode pattern layer 162. The sensing signal is transmitted to the external circuit through the circuit layer 164, thereby implementing calculation and recognition of the touch position. The material of the electrode pattern layer 162 may include a conductive oxide having a good light transmittance, such as indium tin oxide (ITO).

The vertical projected area of the tough transparent layer 150 on the surface 142 of the transparent cover 140 is greater than or equal to the electrode pattern layer 162 on the surface 142 of the transparent cover 140. Vertical projection area. Therefore, the tough transparent layer 150 can at least block the electrode pattern layer 162 from directly contacting the surface 142 of the transparent cover 140, and the high-temperature process of the touch function layer 160 can be prevented from affecting the strength of the transparent cover 140.

The tough transparent layer 150 is a coating or coating of a light-transmitting and heat-resistant material, and has high toughness characteristics. The material is a transparent polymer elastic material, and includes a plastic polymer and an elastomer (Elastomer), for example, a poly Polyimide, polymethyl methacrylate (PMMA), polycarbonate (PC) or polyethylene terephthalate (PET). Elastic Modulus is a physical quantity that characterizes the tensile or compressive resistance of a material material within elastic limits. Within the elastic limit, the stress should be proportional to the ratio. The ratio is called the elastic modulus of the material. Its size indicates the rigidity of the material. The larger the elastic modulus, the less likely it is to deform. The toughness of the tough transparent layer 150 is greater than the toughness of the transparent cover 140, the toughness of the rigid transparent layer 130, and the toughness of the touch function layer 160, that is, the elastic modulus of the tough transparent layer 150 is smaller than that of the transparent cover 140 and the rigid transparent layer. 130. The elastic modulus of the touch function layer 160. Compared with the transparent cover 140, the tough transparent layer 150 is softer in material and more susceptible to deformation, so that the stress from the transparent cover 140 can be absorbed. Specifically, the tough transparent layer 150 has a modulus of elasticity of ⁴ × ^{10 6} Pa to 5× ^{10 8} Pa. The tough transparent layer 150 has a thickness of from 0.01 micrometers (μm) to 35 micrometers. When the transparent cover 140 is impacted or broken by an external force, the high toughness of the tough transparent layer 150 can resist the transmission of the external force in the vertical direction to the touch function layer 160, and the touch function layer 160 can be prevented from being damaged by the external force in the vertical direction.

In the embodiment of the present invention, the elastic modulus of the rigid transparent layer 130 is greater than the elastic modulus of the tough transparent layer 150, and relatively high hardness. The rigid transparent layer 130 may have a Shore hardness of 50 to 100 and an elastic modulus of 5.0 x 10 ⁷ Pa to 5.0 x 10 ⁹ Pa. The material of the rigid transparent layer 130 may include a resin having a thickness of from 1 μm to 30 μm. The elastic modulus of the rigid transparent layer 130 is also greater than the elastic modulus of the touch function layer 160. When the transparent cover 140 is impacted or broken by an external force, the hardness of the rigid transparent layer 130 is high, and the tensile force and the supporting force are provided to the touch function layer 160, so that the touch function layer 160 does not follow the transparent cover. 140 broke and broke.

In the embodiment of the present invention, the touch function layer 160 which is easily affected by the external force and is broken is sandwiched between the tough transparent layer 150 and the rigid transparent layer 130, and the tough transparent layer 150 with better elastic modulus, that is, the toughness is better. The vertical stress is absorbed to prevent the touch function layer 160 from being damaged. At the same time, by the tensile force and the supporting force of the rigid transparent layer 130 having a large elastic modulus, that is, a hardness or a rigidity, the touch function layer 160 is reduced in deformation due to a large deformation of the lateral tensile force, thereby improving the touch. The impact resistance and service life of the device. In addition, the tough transparent layer 150, the touch function layer 160, and the rigid transparent layer 130 can be formed in sequence. Since the rigid transparent layer 130 is formed after the touch function layer 160, the high-temperature process and the acid-base pair of the touch function layer 160 can be avoided. The effect of the rigid transparent layer 130 also provides a greater choice of material for the rigid transparent layer 130.

In one or more embodiments, the touch device 100 can further include a light shielding layer 170. The light shielding layer 170 is located between the tough transparent layer 150 and the rigid transparent layer 160, and the wiring layer 164 and a portion of the electrode pattern layer 162 cover the light shielding layer 170. The light shielding layer 170 can divide the touch device 100 into a visible area and a non-visible area, and an area overlapping the light shielding layer 170 is a non-visible area, and an inner area of the light shielding layer 170 is a visible area. Most of the electrode pattern layer 162 is located in the viewable area, and a small portion of the electrode pattern layer 162 covers the light shielding layer 170 to be connected to the wiring layer 164 located in the non-visible area. cover The primary function of the optical layer 170 is to mask opaque wire traces and other opaque components. In addition, the light shielding layer 170 may be a black matrix (Black Matrix; BM), and the material thereof may be a photoresist.

In one or more embodiments, the tough transparent layer 150, the light shielding layer 170 and the rigid transparent layer 130 are retracted relative to the edge of the transparent cover 140, and the two are substantially aligned, so that the surface 142 of the transparent cover 140 is partially exposed. . The touch device 100 can also include a stop layer 180. The stopper layer 180 covers at least a portion exposed by the surface 142 of the transparent cover plate 140. The stopper layer 180 and the light shielding layer 170 are of the same color, and the viscosity of the stopper layer 180 is greater than the viscosity of the light shielding layer 170. In addition, at least a portion of the rigid transparent layer 130 is located between the stop layer 180 and the touch function layer 160 . For example, a portion of the rigid transparent layer 130 is located on the surface 132 of the rigid transparent layer 130 facing away from the touch function layer 160 . The viscosity of the stopper layer 180 is high, and it is difficult to retract at the surface 142 of the transparent cover 140, and light can be prevented from penetrating the exposed surface 142 to cause chromatic aberration. The color of the stop layer 180 and the light shielding layer 170 may be the same, for example, all black, but not limited to black, and other dark colors (for example, brown) may also be used. The material of the stopper layer 180 is, for example, ink or insulating glue. The outer surface of the flexible transparent layer 150 and the light shielding layer 170 are retracted relative to the side surface of the transparent cover 140, and the two are substantially aligned, so that the tough transparent layer 150 and the light shielding layer 170 can be reduced at the edge of the transparent cover 140. Irregular indentation of edge effects produces chromatic aberration caused by multiple bright edges.

In addition, the touch device 100 can further include the display module 110 and the adhesive layer 120 in one or more embodiments. The adhesive layer 120 is located between the rigid transparent layer 130 and the display module 110. The transparent cover 140 is disposed opposite to the display module 110, for example, in an approximately parallel manner. In this embodiment, the display module 110 may be a liquid crystal display module (LCM), or may be, for example, a light emitting diode display module or an organic light emitting diode (OLED) display module. The adhesive layer 120 may be an Optical Clear Adhesive (OCA).

FIG. 3 is a schematic view showing the touch device 100 of FIG. 2 subjected to an external force F in the vertical direction. FIG. 4 is a schematic diagram of the touch device 100 of FIG. 3 after being subjected to an external force F in a vertical direction. Referring to FIGS. 3 and 4, when the external force F in the vertical direction is applied to the touch device 100 (for example, an object falls onto the transparent cover 140 or the transparent cover 140 hits an object), The light cover plate 140 is directly stressed, and its toughness is not high, so the transparent cover plate 140 is broken to generate lateral tensile forces F1, F2.

Since the tough transparent layer 150 is located under the transparent cover 140, the high toughness of the tough transparent layer 150 can resist or absorb the vertical external force F to be transmitted to the touch function layer 160, thereby avoiding the external force of the touch function layer 160 due to the vertical direction. F is damaged. In addition, although the lateral tensions F1 and F2 are generated when the transparent cover 140 of the touch device 100 is broken, the reverse tensile force F3 and F4 may be provided to the touch function layer 160 due to the high hardness of the rigid transparent layer 130. It can be ensured that the touch function layer 160 does not break due to the lateral pulling force F1, F2 breaking with the transparent cover plate 140.

In other words, when the transparent cover 140 of the touch device 100 of the present invention is impacted, a crack C1 as shown in FIG. 4 may be formed, but the hard transparent layer 130 and the tough transparent layer 150 cooperate to reduce contact. The control function layer 160 has an influence, so that the impact resistance and the service life of the touch device 100 can be improved, and even if the transparent cover 140 breaks the touch function, the maintenance cost is reduced.

It should be understood that in the following description, the relationship between the component materials and the components that have been described will not be repeated, and will be described first. In the following description, other types of touch devices will be described.

FIG. 5 is a cross-sectional view of a touch device 100a according to an embodiment of the invention. As shown in the figure, the touch device 100a includes a display module 110, an adhesive layer 120, a rigid transparent layer 130, a transparent cover 140, a tough transparent layer 150, a touch function layer 160, a light shielding layer 170, and a stop layer 180. . The difference from the embodiment of FIG. 1 is that at least part of the touch function layer 160 of FIG. 5 is located between the stop layer 180 and the light shielding layer 170, and at least a portion of the stop layer 180 is located on the touch function layer 160 and is rigidly transparent. Between layers 130. In the present embodiment, only the tough transparent layer 150 and the light shielding layer 170 are retracted relative to the edge of the transparent cover 140, so that part of the surface 142 of the transparent cover 140 is exposed, and the rigid transparent layer 130 is not retracted. The stop layer 180 covers a portion of the surface 142 exposed by the transparent cover 140.

In the fifth embodiment, when the transparent cover 140 of the touch device 100a is impacted, the hard transparent layer 130 and the tough transparent layer 150 cooperate to reduce the damage to the touch function layer 160.

FIG. 6 is a cross-sectional view of a touch device 100b according to an embodiment of the invention. FIG. 7 is a partial enlarged view of the touch device 100b of FIG. 6. Referring to FIG. 6 and FIG. 7 , the touch device 100b includes a display module 110 , an adhesive layer 120 , a rigid transparent layer 130 , a transparent cover 140 , a tough transparent layer 150 , a touch function layer 160 , and a light shielding layer 170 . With the stop layer 180. The difference from the embodiment of FIG. 1 is that the rigid transparent layer 130 of FIG. 6 is located between the tough transparent layer 150 and the touch function layer 160, that is, the tough transparent layer 150 is located on the rigid transparent layer 130 and the transparent cover plate. Between 140. In addition, the adhesive layer 120 Located between the display module 110 and the touch function layer 160. In the present embodiment, the light shielding layer 170 is located on a portion of the surface 134 of the rigid transparent layer 130 facing away from the tough transparent layer 150, and the wiring layer 164 and a portion of the electrode pattern layer 162 cover the light shielding layer 170. Similarly, the tough transparent layer 150, the rigid transparent layer 130, and the light shielding layer 170 are retracted relative to the edge of the transparent cover 140 to expose a portion of the surface 142 of the transparent cover 140. The stop layer 180 covers a portion of the exposed surface 142 of the transparent cover 140 , and at least a portion of the touch function layer 160 is located between the stop layer 180 and the light shielding layer 170 .

FIG. 8 is a schematic view showing the touch device 100b of FIG. 7 subjected to the external force F5 in the vertical direction. FIG. 9 is a schematic diagram showing the touch device 100b of FIG. 8 after being subjected to the external force F5 in the vertical direction. Referring to FIG. 8 and FIG. 9 , when the external force F5 in the vertical direction is applied to the touch device 100 b (for example, an object falls onto the transparent cover 140 or the transparent cover 140 hits an object), The toughness of the light cover plate 140 is not high, and thus the transparent cover plate 140 is broken to generate lateral tensile forces F6 and F7.

Since the tough transparent layer 150 is located under the transparent cover 140, the high toughness of the tough transparent layer 150 can be transmitted to the touch function layer 160 against the vertical force F5, thereby avoiding the external force F5 of the touch function layer 160 due to the vertical direction. damage. In addition, although the transverse tensile force F6, F7 is generated when the transparent cover 140 of the touch device 100b is broken, the reverse tensile force F8, F9 can be provided to the touch function layer 160 due to the high hardness of the rigid transparent layer 130. It can be ensured that the touch function layer 160 does not break due to the lateral pulling force F6, F7 breaking with the transparent cover plate 140.

In other words, when the transparent cover 140 of the touch device 100b of the present invention is impacted, the crack C2 as shown in FIG. 9 is formed, but through the interaction of the rigid transparent layer 130 and the tough transparent layer 150, the touch can be reduced. Functional layer 160 The impact can therefore improve the service life of the touch device 100b and reduce the cost of maintenance.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧ touch device

110‧‧‧ display module

120‧‧‧adhesive layer

130‧‧‧hard transparent layer

132‧‧‧ surface

140‧‧‧Transparent cover

142‧‧‧ surface

150‧‧‧Tough transparent layer

160‧‧‧ touch function layer

162‧‧‧electrode pattern layer

164‧‧‧Line layer

170‧‧‧Lighting layer

180‧‧‧stop layer

Claims (19)

A touch device comprising: a transparent cover; a tough transparent layer on a surface of the transparent cover, and the elastic modulus of the flexible transparent layer is smaller than the elastic modulus of the transparent cover; a touch function layer; and a hard transparent layer, wherein the touch function layer is located on a side of the tough transparent layer facing the transparent cover, and the elastic modulus of the rigid transparent layer is greater than the elastic mode of the tough transparent layer the amount. The touch device of claim 1, wherein the tough transparent layer has a modulus of elasticity that is less than a modulus of elasticity of the touch function layer, and the modulus of elasticity of the rigid transparent layer is greater than a modulus of elasticity of the touch function layer. The touch device of claim 1, wherein the rigid transparent layer has a modulus of elasticity of from 5.0 x 10 ⁷ Pa to 5.0 x 10 ⁹ Pa. The touch device of claim 1, wherein the rigid transparent layer has a Shore hardness of 50 to 100. The touch device of claim 1, wherein the thickness of the rigid transparent layer is between 1 μm and 30 μm. The touch device of claim 3, wherein the material of the rigid transparent layer comprises a resin. The touch device of claim 1, wherein the tough transparent layer has a modulus of elasticity of from ⁴ × ^{10 6} Pa to 5× ^{10 8} Pa. The touch device of claim 1, wherein the tough transparent layer has a thickness of from 0.01 μm to 35 μm. The touch device of claim 7, wherein the material of the tough transparent layer comprises polyimide, polymethyl methacrylate, polycarbonate or polyethylene terephthalate. The touch device of claim 1, wherein the touch function layer is located between the tough transparent layer and the rigid transparent layer. The touch device of claim 10, wherein the touch function layer has an electrode pattern layer and a circuit layer, the circuit layer is located on at least one side of the electrode pattern layer, and is electrically connected to the electrode pattern layer. The touch device further includes: a light shielding layer between the tough transparent layer and the rigid transparent layer, and the circuit layer and a portion of the electrode pattern layer cover the light shielding layer. The touch device of claim 11, wherein a vertical projected area of the tough transparent layer on the surface of the transparent cover is greater than or equal to a vertical projected area of the electrode pattern layer on the surface of the transparent cover. The touch device of claim 11, wherein the tough transparent layer and the light shielding layer are retracted and substantially aligned with respect to an edge of the transparent cover to expose the surface portion of the transparent cover, the touch device The method further includes: a stop layer covering at least the exposed portion of the surface of the transparent cover plate, the stop layer and the light shielding layer being of the same color, and the viscosity of the stop layer is greater than the viscosity of the light shielding layer. The touch device of claim 13, wherein the rigid transparent layer is retracted relative to an edge of the transparent cover, and at least a portion of the rigid transparent layer is located between the stop layer and the touch function layer. The touch device of claim 13, wherein at least a portion of the stop layer is between the touch function layer and the rigid transparent layer. The touch device of claim 1, wherein the rigid transparent layer is located between the tough transparent layer and the touch function layer, and the tough transparent layer is located between the rigid transparent layer and the transparent cover. The touch device of claim 16, wherein the touch function layer has an electrode pattern layer and a circuit layer, the circuit layer is located on at least one side of the electrode pattern layer, and is electrically connected to the electrode pattern layer. The touch device further includes: a light shielding layer on a portion of the surface of the rigid transparent layer facing the tough transparent layer, and the circuit layer and a portion of the electrode pattern layer cover the light shielding layer. The touch device of claim 17, wherein the tough transparent layer, the rigid transparent layer and the light shielding layer are retracted and substantially aligned with respect to an edge of the transparent cover, so that the surface portion of the transparent cover is exposed. The touch device further includes: a stop layer covering at least the exposed portion of the surface of the transparent cover plate, the stop layer and the light shielding layer being of the same color, and the viscosity of the stop layer is greater than the light shielding The viscosity of the layer. The touch device of claim 1, wherein the material of the transparent cover comprises glass, and the material of the touch function layer comprises indium tin oxide.