TWI622917B - Touch device - Google Patents

Abstract

A touch device includes a substrate, a first insulating layer, a conductive pattern layer, a second insulating layer, and an ink layer. The first insulating layer is on the substrate. A conductive pattern layer is formed on the first insulating layer. A second insulating layer is formed on the conductive pattern layer. The ink layer is formed on the second insulating layer, wherein the second insulating layer has a first opening and / or the conductive pattern layer has a second opening.

Description

Touch device

The present invention relates to a touch device, and more particularly, to a touch device having an ink layer.

In some electronic products, manufacturers use a patterning process to form specific patterns at specific locations. These patterns are, for example, the manufacturer's own unique marks, so that users can know which manufacturer the product is made from. These patterns can also be used to facilitate users to understand how to operate the product's markings, for example, different patterns can be formed on the keys of the product with different functions.

However, in existing electronic products, these patterns are easily damaged and peeled off. Therefore, there is an urgent need for a method that can improve the aforementioned problems.

At least one embodiment of the present invention provides a touch device, which can improve the problem that the ink layer is easily peeled off.

The touch device of at least one embodiment of the present invention includes a substrate, a first insulating layer, a conductive pattern layer, a second insulating layer, and an ink layer. The first insulating layer is on the substrate. A conductive pattern layer is formed on the first insulating layer. A second insulating layer is formed on the conductive pattern layer. The ink layer is formed on the second insulating layer, wherein the second insulating layer has a first opening and / or the conductive pattern layer has a second opening.

An object of the present invention is to improve the problem that the ink layer on the second insulating layer is easily peeled off.

An object of the present invention is to improve the problem that the second insulating layer on the conductive pattern layer is easily peeled off.

In order to make the above features and advantages of the present invention more comprehensible, embodiments are hereinafter described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic top view of a touch device according to an embodiment of the invention.

Referring to FIG. 1, the touch device 10 includes a substrate 100, a driving circuit DR, a wire L, a touch electrode array PA, and a touch element ICN.

The substrate 100 has a main touch area AA and a peripheral area BA located on at least one side of the main touch area AA. The material of the substrate 100 may be glass, quartz, organic polymer, or other applicable materials. In this embodiment, the base 100 is, for example, a special-shaped substrate, but the present invention is not limited thereto. The shape of the substrate 100 may further include a triangle, a rectangle, an oval, or other geometric shapes or a combination of multiple geometric shapes.

The touch electrode array PA is located on the main touch area AA of the substrate 100. Examples of the touch electrode array PA include a plurality of horizontal touch electrode strings and a vertical touch electrode string that intersect each other.

The driving circuit DR is located on the peripheral area BA of the substrate 100. The peripheral area BA of the substrate 100 has a plurality of touch elements ICN, and the lead wire L is electrically connected between the driving circuit DR and the touch element ICN.

FIG. 2 is a schematic enlarged partial top view of a touch device according to an embodiment of the present invention, for example, a schematic top view of a part of a region R1 in FIG. 1. It must be noted here that, in order to make the conductive pattern layer 150 in the touch device ICN clearly visible in FIG. 2, other components are omitted in FIG. 2.

FIG. 3A is a partially enlarged top view of a touch device according to an embodiment of the present invention, for example, a top view of a portion corresponding to a region R2 in FIG. 2. Fig. 3B is a schematic cross-sectional view taken along the line AA 'of Fig. 3A. It must be noted that, in order to make FIG. 3A clearly display the second insulating layer 160 and the ink layer 170 in the touch device ICN, other components are omitted in FIG. 3A.

Please refer to FIGS. 2, 3A, and 3B at the same time. The touch device 10 includes a substrate 100, a first buffer layer 110, a light-shielding layer 120, a second buffer layer 130, a first insulating layer 140, a conductive pattern layer 150, and a second insulation. The layer 160, the ink layer 170, the light emitting element 210, and the counter substrate 200.

The first buffer layer 110 is formed on the substrate 100. The material of the first buffer layer 110 includes, for example, silicon oxynitride, an organic material, or other suitable materials or a combination of the foregoing materials. In some embodiments, the first buffer layer 110 has a function of adjusting chromatic aberration.

The light shielding layer 120 is formed on the first buffer layer 110. The light shielding layer 120 has a light transmitting hole H, and the shape of the light transmitting hole H corresponds to a pattern. In some embodiments, the pattern corresponding to the transparent hole H includes, for example, text, numbers, or other marks.

Please refer to FIG. 3B. In this embodiment, the transparent hole H can be filled with a filling material (not labeled), but the present invention is not limited thereto. In a modified example, the second buffer formed on the light shielding layer 120 The layer 130 may be filled in the light-transmitting hole H, that is, the second buffer layer 130 is located on the upper surface of the light-shielding layer 120 and fills the light-transmitting hole H and is in contact with the first buffer layer 110. limit.

The touch device 10 may optionally include a second buffer layer 130. The second buffer layer 130 is formed on the light shielding layer 120. In some embodiments, the material of the second buffer layer 130 includes, for example, silicon oxynitride, silicon oxide, organic materials, or other suitable materials or a combination of the foregoing materials.

The first insulating layer 140 is located on the substrate 100 and is formed on the second buffer layer 130. In some embodiments, the material of the first insulating layer 140 includes, for example, silicon oxynitride, silicon oxide, organic materials, or other suitable materials or a combination of the foregoing materials.

The conductive pattern layer 150 is formed on the first insulating layer 140. The conductive pattern layer 150 is, for example, a transparent conductive material. In some embodiments, the material of the conductive pattern layer 150 includes, for example, indium tin oxide, copper, silver, or other suitable materials or a combination of the foregoing materials.

The conductive pattern layer 150 includes a first touch electrode 150A and a second touch electrode 150B that are not in contact with each other. In this embodiment, the first touch electrode 150A is I-shaped, and the second touch electrode 150B substantially surrounds the first touch electrode 150A, but the present invention is not limited thereto. In other embodiments, the first touch electrodes 150A and the second touch electrodes 150B may have other different geometric shapes.

In some embodiments, the first touch electrode 150A has a contact structure C1, and the contact structure C1 is electrically connected to a wire located in another film layer, for example, it is electrically connected to a wire L (shown in FIG. 1). In some embodiments, the second touch electrode 150B has a contact structure C2. The contact structure C2 is electrically connected to a wire located in another film layer, for example, it is electrically connected to another wire L (shown in FIG. 1). In some embodiments, the conductive line L is located between the first insulating layer 140 and the second buffer layer 130, but is not limited thereto. The first touch electrodes 150A and the second touch electrodes 150B are respectively electrically connected to different wires L, and the first touch electrodes 150A and the second touch electrodes 150B transmit different signals.

Although in this embodiment, it is exemplified that the conductive pattern layer 150 includes a self-capacitive touch electrode, the present invention is not limited thereto. In other embodiments, the conductive pattern layer 150 may also include a mutual-capacitance touch electrode.

The second insulating layer 160 is formed on the conductive pattern layer 150. In this embodiment, the first buffer layer 110, the light shielding layer 120, the second buffer layer 130, the first insulating layer 140, and the conductive pattern layer 150 are all located under the second insulating layer 160. In some embodiments, the second insulation layer 160 has characteristics such as moisture resistance, high hardness, and high adhesion, and the touch device can adjust the optical properties of the touch insulation device through the second insulation layer 160. The material of the second insulating layer 160 includes, for example, silicon oxynitride, silicon oxide, organic materials, other suitable materials, or a combination of the foregoing materials. In some embodiments, the second buffer layer 130, the first insulating layer 140, and the second insulating layer 160 have the same material.

The second insulating layer 160 has a plurality of first openings O1. In this embodiment, the shape of the first opening O1 is rectangular, the first opening O1 has a width m and a width n in different directions, and the opening size of the first opening O1 is , Where m is greater than 0 micrometer (µm) and less than 10000µm, and n is greater than 0µm and less than 10000µm, preferably 24µm ≦ m ≦ 36µm and 24µm ≦ n ≦ 36µm. Examples of the first opening O1 area equal to or greater than 576μm ² and less than or equal to 1296μm ^2. Although the shape of the first opening O1 is rectangular in this embodiment, the present invention is not limited thereto. In other embodiments, the shape is a triangle, a pentagon, a hexagon, a heptagon, Round, oval, or other geometric shapes.

The ink layer 170 is formed on the second insulating layer 160. In some embodiments, the color of the ink layer 170 includes, for example, black, gray, or white, but is not limited thereto. In this embodiment, the ink layer 170 is in contact with the conductive pattern layer 150 through the first opening O1.

In some embodiments, the ink layer 170 that is in contact with the conductive pattern layer 150 is less likely to peel (or peel off) than the ink layer 170 formed on the second insulating layer 160. Therefore, the first opening of this embodiment O1 can improve the problem that the ink layer 170 on the second insulating layer 160 is easily peeled off.

Although in this embodiment, only the touch element ICN on the peripheral area BA is shown as having a conductive pattern layer 150, a second insulating layer 160, and an ink layer 170, the invention is not limited thereto. In some embodiments, part of the conductive pattern layer 150, part of the second insulating layer 160, and part of the ink layer 170 are also located on the main touch area AA, and the second insulating layer 160 on the main touch area AA may also have a first The opening O1 allows a part of the ink layer 170 on the main touch area AA to be in contact with a part of the conductive pattern layer 150 on the main touch area AA.

In some embodiments in which the ink layer 170 is in contact with the conductive pattern layer 150, a 100 grid test is performed on the ink layer 170. The damage rate of the ink layer 170 is less than or equal to five percent. Grade, most of which is about 4B grade.

The light emitting element 210 is located above the ink layer 170. In some embodiments, the light emitting element 210 is, for example, formed on the opposite substrate 200, but is not limited thereto. In some embodiments, the light emitting element 210 is, for example, a light emitting diode, but is not limited thereto. In some embodiments, the opposite substrate 200 is, for example, a color filter substrate, a blank substrate, a circuit board, or an insulating film layer, but is not limited thereto. In some embodiments, the light emitted by the light emitting element 210 passes through the light transmitting holes of the ink layer 170, the second insulating layer 160, the conductive pattern layer 150, the first insulating layer 140, the second buffer layer 130, and the light shielding layer 120. H, the first buffer layer 110 and the substrate 100 can then reach the naked eye of the user, so that the user can know the pattern of the light transmitting hole H.

FIG. 4 is a schematic partially enlarged top view of a touch device according to an embodiment of the present invention. It must be noted here that the embodiment of FIG. 4 follows the component numbers and parts of the embodiments of FIGS. 3A and 3B, in which the same or similar reference numerals are used to indicate the same or similar components, and the same technical content is omitted. Instructions. For the description of the omitted parts, reference may be made to the foregoing embodiments, and details are not described herein. In order to make FIG. 4 clearly display the second insulating layer 160 and the ink layer 170 in the touch-sensitive component ICN, other components are omitted in FIG. 4.

Please refer to FIG. 4. In this embodiment, the shape of the first opening O1 of the second insulating layer 160 is a cross shape. The ink layer 170 is in contact with the conductive pattern layer 150 through the first opening O1.

In this embodiment, the second insulating layer 160 has a plurality of first openings O1 having a cross shape, but the present invention is not limited thereto. In some embodiments, the second insulation layer 160 includes a plurality of cross-shaped island structures separated from each other, and a space between the cross-shaped island structures is a first opening.

FIG. 5A is a partially enlarged top view of a touch device according to an embodiment of the present invention. Fig. 5B is a schematic cross-sectional view taken along the line BB 'of Fig. 5A. It must be noted here that the embodiments of FIG. 5A and FIG. 5B inherit the component numbers and parts of the embodiments of FIG. 3A and FIG. Description of technical content. For the description of the omitted parts, reference may be made to the foregoing embodiments, and details are not described herein. In order to make FIG. 5A clearly display the conductive pattern layer 150 and the second insulating layer 160 in the touch device ICN, other components are omitted in FIG. 5A.

Please refer to FIGS. 5A and 5B. In this embodiment, the conductive pattern layer 150 has a plurality of second openings O2, but the second insulating layer 160 does not have the first openings O1. The second insulating layer 160 is in contact with the first insulating layer 140 through the second opening O2. In some embodiments, the first insulating layer 140 and the second insulating layer 160 have similar or the same material characteristics. For example, the first insulating layer 140 and the second insulating layer 160 have the same material, as compared to those formed on the conductive pattern layer. The second insulating layer 160 on 150 is relatively difficult to peel off (or peel off) the second insulating layer 160 that is in contact with the first insulating layer 140 through the second opening O2. Therefore, the second opening O2 of this embodiment can improve the problem that the second insulating layer 160 on the conductive pattern layer 150 is easily peeled off. The second insulating layer 160 and the ink layer 170 located thereon can be less easily removed from the conductive pattern layer 150. Peel off, thereby increasing the quality of the touch device.

In some embodiments, part of the first insulating layer 140, part of the conductive pattern layer 150, and part of the second insulating layer 160 are also located on the main touch area AA, and the conductive pattern layer 150 on the main touch area AA may also have The second opening O2 allows a part of the second insulating layer 160 on the main touch area AA to be in contact with a part of the first insulating layer 140 on the main touch area AA.

FIG. 6 is a schematic partially enlarged top view of a touch device according to an embodiment of the present invention. It must be noted here that the embodiment of FIG. 6 follows the component numbers and parts of the embodiments of FIGS. 5A and 5B, in which the same or similar reference numerals are used to indicate the same or similar components, and the same technical content is omitted. Instructions. For the description of the omitted parts, reference may be made to the foregoing embodiments, and details are not described herein. In order to make FIG. 6 clearly display the conductive pattern layer 150 and the second insulating layer 160 in the touch device ICN, other components are omitted in FIG. 6.

In this embodiment, the conductive pattern layer 150 includes a plurality of conductive thin lines. In some embodiments, the first touch electrode 150A and the second touch electrode 150B may include one or more conductive thin wires, respectively, or may be one of the first touch electrode 150A and the second touch electrode 150B. It contains one or more thin conductive wires. In this embodiment, the conductive thin lines on the conductive pattern layer 150 form a mesh structure, and the space between the conductive thin lines is the second opening O2. The second insulating layer 160 is in contact with the first insulating layer 140 through the second opening O2.

FIG. 7 is a schematic partial cross-sectional view of a touch device according to an embodiment of the present invention. It must be noted here that the embodiment of FIG. 7 inherits the component numbers and parts of the embodiments of FIGS. 5A and 5B. The same or similar reference numerals are used to indicate the same or similar components, and the same technical content is omitted. Instructions. For the description of the omitted parts, reference may be made to the foregoing embodiments, and details are not described herein.

In this embodiment, the second insulating layer 160 has a first opening O1 and the conductive pattern layer 150 has a second opening O2. The first opening O1 and the second opening O2 overlap in the normal direction of the substrate 100 to form a common opening. . The ink layer 170 is in contact with the first insulating layer 140 through the first opening O1 and the second opening O2. In this embodiment, the second opening O2 exposes a part of the first insulating layer 140, but the present invention is not limited thereto. In other embodiments, the depth of the second opening O2 is smaller than the thickness of the conductive pattern layer 150, the second opening O2 does not expose the first insulating layer 140, and the ink layer 170 does not contact the first insulating layer 140.

FIG. 8 is a schematic partial cross-sectional view of a touch device according to an embodiment of the present invention. The embodiment of FIG. 8 inherits the component numbers and part of the content of the embodiment of FIG. 7, wherein the same or similar reference numerals are used to indicate the same or similar components, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and details are not described herein.

In this embodiment, the second insulating layer 160 has a first opening O1, and the conductive pattern layer 150 has a second opening O2. The first opening O1 and the second opening O2 are staggered. For example, the first opening O1 and the second opening O2 do not overlap in the normal direction of the substrate 100. In this embodiment, the ink layer 170 is in contact with the conductive pattern layer 150 through the first opening O1, and the second insulating layer 160 is in contact with the first insulating layer 140 through the second opening O2.

FIG. 9 is a schematic top view of a light-shielding layer according to an embodiment of the present invention. The embodiment of FIG. 9 inherits the component numbers and parts of the embodiments of FIGS. 3A and 3B. The same or similar symbols are used to represent the same or similar components, and the description of the same technical content is omitted. For the description of the omitted parts, reference may be made to the foregoing embodiments, and details are not described herein.

In this embodiment, the light shielding layer 120 has a light transmitting hole H, and the shape of the light transmitting hole H corresponds to a pattern. In this embodiment, the pattern corresponding to the light transmitting hole H includes English characters, but the present invention is not limited thereto. The pattern corresponding to the light-transmitting hole H may also be other characters, numbers, marks, or a combination of the foregoing patterns.

In some embodiments, the light emitted by the light-emitting element 210 can pass through the light-transmitting hole H on the light-shielding layer 120, so that the user can see the pattern corresponding to the light-transmitting hole H. In some embodiments, the transparent holes H of the light-shielding layer 120 correspond to different patterns in different touch element ICNs, which makes it difficult for a user to confuse functions corresponding to different touch element ICNs.

In at least one embodiment of the present invention, the touch device can improve the problem that the ink layer on the second insulating layer is easily peeled off.

In at least one embodiment of the present invention, the touch device can improve the problem that the second insulating layer on the conductive pattern layer is easily peeled off.

Although the present invention has been disclosed as above with the examples, it is not intended to limit the present invention. Any person with ordinary knowledge in the technical field can make some modifications and retouching without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be determined by the scope of the attached patent application.

10‧‧‧ touch device

100‧‧‧ substrate

110‧‧‧first buffer layer

120‧‧‧ light-shielding layer

130‧‧‧Second buffer layer

140‧‧‧first insulating layer

150‧‧‧ conductive pattern layer

150A‧‧‧First touch electrode

150B‧‧‧Second touch electrode

160‧‧‧Second insulation layer

170‧‧‧Ink layer

AA‧‧‧Main Touch Area

BA‧‧‧Peripheral area

C1, C2‧‧‧ contact structure

DR‧‧‧Drive circuit

H‧‧‧light transmission hole

ICN‧‧‧Touch parts

L‧‧‧ lead

m, n‧‧‧ width

O1‧‧‧First opening

O2‧‧‧Second opening

PA‧‧‧Touch electrode array

R1, R2‧‧‧ area

FIG. 1 is a schematic top view of a touch device according to an embodiment of the invention. FIG. 2 is a partially enlarged schematic diagram of a touch device according to an embodiment of the present invention. FIG. 3A is a partially enlarged top view of a touch device according to an embodiment of the present invention. Fig. 3B is a schematic cross-sectional view taken along the line AA 'of Fig. 3A. FIG. 4 is a schematic partially enlarged top view of a touch device according to an embodiment of the present invention. FIG. 5A is a partially enlarged top view of a touch device according to an embodiment of the present invention. Fig. 5B is a schematic cross-sectional view taken along the line BB 'of Fig. 5A. FIG. 6 is a schematic partially enlarged top view of a touch device according to an embodiment of the present invention. FIG. 7 is a schematic partial cross-sectional view of a touch device according to an embodiment of the present invention. FIG. 8 is a schematic partial cross-sectional view of a touch device according to an embodiment of the present invention. FIG. 9 is a schematic top view of a light-shielding layer according to an embodiment of the present invention.

Claims (31)

A touch device includes: a substrate; a first insulating layer on the substrate; a conductive pattern layer formed on the first insulating layer; a second insulating layer formed on the conductive pattern layer; and An ink layer is formed on the second insulating layer, wherein the second insulating layer has a first opening, and the ink layer is in contact with the conductive pattern layer through the first opening. The touch device according to item 1 of the scope of patent application, wherein the opening size of the first opening is m × n , where 24 μm ≦ m ≦ 36 μm and 24 μm ≦ n ≦ 36 μm. The touch device according to item 1 of the patent application, wherein the shape of the first opening is a cross shape. The touch device according to item 1 of the scope of patent application, wherein the area of the first opening is greater than or equal to 576 μm ² and less than or equal to 1296 μm ² . According to the touch device of claim 1, wherein the conductive pattern layer has a second opening, the ink layer is in contact with the first insulating layer through the first opening and the second opening. The touch device according to item 1 of the application, wherein the conductive pattern layer has a second opening, and the first opening is staggered from the second opening. The touch device according to item 1 of the application, wherein the conductive pattern layer includes a first touch electrode and a second touch electrode that are not in contact with each other. The touch device according to item 7 of the scope of patent application, wherein the first touch electrode is an I-shape, and the second touch electrode substantially surrounds the first touch electrode. The touch device according to item 7 of the scope of patent application, wherein the first touch electrode and the second touch electrode each include a plurality of conductive thin wires. The touch device according to item 1 of the scope of patent application, further includes: a light-shielding layer located below the second insulating layer, and the light-shielding layer has a light-transmitting hole, and the shape of the light-transmitting hole corresponds to a pattern. The touch device according to item 10 of the patent application, wherein the pattern includes text and / or numbers. The touch device according to item 10 of the scope of patent application, further comprising: a first buffer layer formed on the substrate, wherein the light shielding layer is formed on the first buffer layer; and a second buffer layer is formed. On the light-shielding layer, the first insulating layer is formed on the second buffer layer. The touch device according to item 1 of the patent application scope further includes: a light-emitting element located above the ink layer. The touch device according to item 1 of the scope of patent application, wherein the material of the first insulating layer is silicon oxynitride, silicon oxide, or an organic material, and the material of the second insulating layer is silicon oxynitride. , Silicon oxide or organic material, and the material of the conductive pattern layer is indium tin oxide, copper or silver. The touch device according to item 1 of the scope of patent application, wherein the color of the ink layer is white, gray, or black. The touch device according to item 1 of the patent application scope further includes a touch electrode array on the substrate, wherein the conductive pattern layer is located on one side of the touch electrode array. The touch device according to item 1 of the scope of patent application, wherein the number of the first openings is multiple. The touch device according to item 1 of the scope of patent application, wherein the first insulating layer and the second insulating layer have the same material. A touch device includes: a substrate; a first insulating layer on the substrate; a conductive pattern layer formed on the first insulating layer; a second insulating layer formed on the conductive pattern layer; and An ink layer is formed on the second insulating layer, wherein the conductive pattern layer has a second opening, and the second insulating layer is in contact with the first insulating layer through the second opening. The touch device according to item 19 of the application, wherein the conductive pattern layer includes a first touch electrode and a second touch electrode which are not in contact with each other. The touch device according to item 20 of the application, wherein the first touch electrode is an I-shape, and the second touch electrode substantially surrounds the first touch electrode. The touch device according to item 20 of the application, wherein the first touch electrode and the second touch electrode each include a plurality of conductive thin wires. The touch device according to item 19 of the scope of patent application, further comprising: a light-shielding layer located below the second insulating layer, and the light-shielding layer has a light-transmitting hole, and the shape of the light-transmitting hole corresponds to a pattern. The touch device according to item 23 of the patent application, wherein the pattern includes text and / or numbers. The touch device according to item 23 of the scope of patent application, further comprising: a first buffer layer formed on the substrate, wherein the light shielding layer is formed on the first buffer layer; and a second buffer layer is formed On the light-shielding layer, the first insulating layer is formed on the second buffer layer. The touch device according to item 19 of the scope of patent application, further comprising: a light emitting element located above the ink layer. The touch device according to item 19 of the application, wherein the material of the first insulating layer is silicon oxynitride, silicon oxide, or an organic material, and the material of the second insulating layer is silicon oxynitride. , Silicon oxide or organic material, and the material of the conductive pattern layer is indium tin oxide, copper or silver. The touch device according to item 19 of the application, wherein the color of the ink layer is white, gray, or black. The touch device according to item 19 of the patent application scope further includes a touch electrode array on the substrate, wherein the conductive pattern layer is located on one side of the touch electrode array. The touch device according to item 19 of the scope of patent application, wherein the number of the second openings is multiple. The touch device according to item 19 of the application, wherein the first insulating layer and the second insulating layer have the same material.