TWI668613B - Touch sensing module - Google Patents

Abstract

A touch sensing module includes a first touch electrode layer. The first touch electrode layer includes a plurality of first touch channels insulated from each other, and each first touch channel is formed of a metal grid. Each of the metal grids is formed by staggering a plurality of metal lines; at least one first boundary line is formed of a conductive material, and each first boundary line is disposed along an extension direction of a first touch channel, and is A touch channel is electrically connected, and a vertex of a metal grid on a side of the first touch channel near the first boundary line is located on the first boundary line; and a plurality of auxiliary lines including a first end and a distance from the first end At the second end, the first end of each auxiliary line is electrically connected to a first boundary line, and the second end is electrically connected to a metal grid adjacent to the first end.

Description

Touch sensing module

The present invention relates to a touch sensing module, and more particularly to a touch sensing module using a metal mesh.

Touch sensing is widely used in various electronic devices as a simple human-computer dialogue mode, such as mobile phones, IPAD, etc., especially capacitive touch sensing, which is covered with a layer of metal conductive material on the upper and lower surfaces of the insulating material. When a conductive object (finger) touches, the current sensing of the human body will work, so that the surface capacitance at the surface of the electric shock changes, so the position of the touch point can be measured, and it is affected by the sensitive response of the capacitive touch screen. More and more people are favoring it. At present, metal conductive materials on insulating materials mostly use metal grids. The metal grid is composed of a plurality of metal grid blocks arranged at intervals, and each metal grid block is composed of multiple metal wires, metal meshes. Technology is popular because of its low cost and good electrical conductivity.

As shown in FIG. 6, it is a partially enlarged schematic diagram of a touch sensing module 6. The touch sensing module 6 includes a plurality of main touch channels 622 provided in the display area AA and an edge touch channel 621 provided in the display area AA near the edge of the non-display area NA. The edge touch channel 621 is formed by a single metal grid. The extending direction of the edge touch channel 621 is repeatedly arranged. Correspondingly, there is only one metal connection point 620 in any area perpendicular to the extending direction of the edge touch channel 62. It can be understood that one metal connection point 620 is formed by the intersection of two metal lines. When one of them is disconnected, only one metal line is left, so that the entire edge touch channel cannot work normally.

A touch sensing module includes a first touch electrode layer. The first touch electrode layer includes a plurality of first touch channels insulated from each other, and each first touch channel is formed of a metal grid. Each of the metal grids is formed by staggering a plurality of metal lines; at least one first boundary line is formed of a conductive material, and each first boundary line is disposed along an extension direction of a first touch channel, and is A touch channel is electrically connected, and a vertex of a metal grid on a side of the first touch channel near the first boundary line is located on the first boundary line; and a plurality of auxiliary lines including a first end and a distance from the first end At the second end, the first end of each auxiliary line is electrically connected to a first boundary line, and the second end is electrically connected to a metal grid adjacent to the first end.

Compared with the conventional touch sensing module, the touch sensing module provided by the present invention has a lower probability of signal short circuit and is more durable.

1, 6‧‧‧ touch sensing module

11‧‧‧ substrate

12‧‧‧first touch electrode layer

13‧‧‧Second touch electrode layer

15‧‧‧Optical glue

X‧‧‧ first direction

Y‧‧‧ second direction

AA‧‧‧display area

NA‧‧‧Non-display area

120‧‧‧first touch channel

121‧‧‧First edge touch channel

122‧‧‧The first main touch channel

123‧‧‧Auxiliary line

124‧‧‧ Second boundary

125‧‧‧ first boundary

126‧‧‧Second connection point

128‧‧‧ the first connection point

130‧‧‧Second Touch Channel

131‧‧‧Second edge touch channel

132‧‧‧Second main touch channel

134‧‧‧ Fourth border line

135‧‧‧ Third border line

621‧‧‧Edge touch channel

622‧‧‧Main Touch Channel

620‧‧‧metal connection point

FIG. 1 is a schematic cross-sectional view of a touch sensing module according to the present invention.

FIG. 2 is a schematic plan view of a first touch electrode layer of the touch sensing module of the present invention.

FIG. 3 is a partially enlarged schematic diagram of the first touch electrode layer of FIG. 2.

FIG. 4 is a schematic plan view of a second touch electrode layer of the touch sensing module of the present invention.

FIG. 5 is a partially enlarged schematic diagram of the second touch electrode layer of FIG. 4.

FIG. 6 is a partially enlarged schematic diagram of a touch sensing module with a conventional structure.

The drawings show embodiments of the present invention, and the present invention can be implemented in many different forms, and should not be construed as being limited to the embodiments set forth herein. Instead, the embodiments are provided In order to make the present disclosure more comprehensive and complete, and to enable those skilled in the art to more fully understand the scope of the present invention. For clarity, the dimensions of layers and regions have been exaggerated in the figure.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, elements, regions, layers and / or sections, such elements, elements, regions, layers and / or sections should not be limited to Those terms. These terms are only used to distinguish one element, element, region, layer and / or part from another element, element, region, layer and / or part. Accordingly, the first part, element, region, layer, and / or part discussed below can be referred to as the second element, element, region, layer, and / or part without departing from the teachings of the present invention.

The proper nouns used herein are only used to describe specific embodiments and are not intended to limit the present invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that when the terms "comprising" and "including" are used in the specification, the presence of stated features, integers, steps, operations, elements and / or components is indicated, but one or more other features, integers, The presence of steps, operations, elements and / or components.

Embodiments of the present invention are described here with reference to cross-sectional views, which are schematic diagrams of idealized embodiments (and intermediate structures) of the present invention. Thus, variations in the shapes of the illustrations as a result of manufacturing processes and / or tolerances are to be expected. Therefore, the embodiments of the present invention should not be interpreted as being limited to the specific shape of the region illustrated here, but should include deviations in the shape due to, for example, manufacturing. The regions shown in the figures are only schematic, and their shapes are not intended to illustrate the actual shape of the device, and are not intended to limit the scope of the invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in the general dictionary should be interpreted to have meanings consistent with their meaning in the context of the relevant field, and should not be interpreted in an overideal or overly formal sense Unless explicitly defined in this article.

Hereinafter, specific embodiments of the present invention will be described in further detail with reference to the accompanying drawings.

Please refer to FIG. 1, which is a schematic cross-sectional view of a touch sensing module of the present invention. The touch sensing module 1 of the present invention includes an insulating substrate 11, and a first touch electrode layer 12 and a second touch electrode layer 13 provided on opposite sides of the substrate 11. The second touch electrode layer 13 and the first A touch electrode layer 12 is disposed at an insulating interval.

The substrate 11 may be a flexible material or a non-flexible material. In this embodiment, the substrate 11 is a flexible material and has flexibility, so that the touch sensing module 1 can be applied to a curved display device or a flexible display. Device. In an embodiment, the material of the substrate 11 may be an organic substance, such as polyimide (PI), polyethylene naphthalate two formic acid glycol ester (PEN), or polyethylene terephthalate. Polyethylene glycol terephthalate (PET). In one embodiment, the substrate 11 may be a non-flexible material, which has a certain rigidity, and the substrate 11 may be silicon dioxide (SiO2) or polycarbonate (Polycarbonate, PC).

A display area AA and a non-display area NA are defined on a surface of the first substrate 11, the display area AA is located in a central area, and the non-display area NA surrounds the display area AA. The first touch electrode layer 12 and the second touch electrode layer 13 are disposed corresponding to the display area AA, and a user operates in an area corresponding to the display area AA. The first touch electrode layer 12 and the The second touch electrode layer 13 cooperates with each other to form a mutual-capacitive touch sensing structure to sense a user's touch operation.

Please refer to FIG. 2 and FIG. 3 together. FIG. 2 is a schematic plan view of the first touch electrode layer 12 of the touch sensing module 1 of the present invention, and FIG. 3 is a schematic diagram of the first touch electrode layer 12 of FIG. 2. Partially enlarged schematic diagram. The first touch electrode layer 12 includes a plurality of mutually isolated first touch channels 120 and at least one first boundary line 125. Each first touch channel 120 is composed of a metal mesh, and each of the metal meshes is formed by a plurality of metal lines intersecting each other. The first boundary lines 125 are formed of a conductive material. Each first boundary line 125 is disposed along an extending direction of a first touch channel 120 and is electrically connected to the first touch channel 120. Then, the vertex of the metal grid on the side of the first touch channel 120 near the first boundary line 125 is located on the first boundary line 125.

The first touch channel 120 includes a plurality of first main touch channels 122 located in the display area AA and at least one first edge touch channel 121 located at an edge of the display area AA and close to the non-display area NA. The channels 122 and the first edge touch channels 121 are arranged parallel to each other along the first direction X.

Referring to FIG. 3, the first touch electrode layer 12 includes a plurality of metal grids formed by intersecting a plurality of metal lines. A connection point between any two adjacent metal grids is defined as a first connection point 128. .

The first touch channel 120 further includes at least a first main touch channel 122 and at least a second boundary line 124. Each second boundary line 124 is electrically connected to a first main touch channel 122 or a first The edge touch channel 121 is electrically connected.

In one embodiment, the first touch channel 120 includes a plurality of first main touch channels 122 located in the display area AA, and at least one first edge touch channel 121 located at the edge of the display area AA and close to the non-display area NA. In other embodiments, the number of the first edge touch channels 121 may be two or more. In an embodiment, a second boundary line 124 is provided on each side of each first main touch channel 122 along its extension direction (first direction X). The second boundary line 124 and the first main touch channel 122 maintains an electrical connection; in other embodiments, one of two sides of each first main touch channel 122 along its extending direction is provided with a second boundary line 124 electrically connected thereto, or each first There are no second boundary lines 124 on both sides of the main touch channel 122 along the extending direction, or at least part of each first main touch channel 122 is electrically connected to the first boundary line 125. In one embodiment, each first edge touch channel 121 is provided with a first boundary line 125 and a second boundary line 124 along both sides of the extending direction. In other embodiments, each first edge touch channel The channel 121 is provided with two first boundary lines 125 on both sides along the extending direction thereof. In an embodiment, the metal mesh on the side of the first edge touch channel 121 near the first boundary line 125 The vertex of the grid is located on the first boundary line 125, and there is only one first connection point 128 in the first edge touch channel 121 in a direction perpendicular to its extension direction (a second direction Y perpendicular to the first direction X).

The first touch electrode layer 12 further includes a plurality of auxiliary lines 123. Each auxiliary line 123 includes a first end and a second end far from the first end. The first end of each auxiliary line 123 and a first boundary line 125. The second end is electrically connected to a metal grid adjacent to the first end. The first boundary line 125 and the auxiliary line 123 are thicker than the second boundary line 124. In one embodiment, the auxiliary line 123 is disposed in the first edge touch channel 121. A first end of each auxiliary line 123 is electrically connected to a first boundary line 125, and a second end is adjacent to the first end. A metal grid is electrically connected, specifically, the second end is connected to a metal wire, and the connection point is a second connection point 126. Moreover, the two metal lines connected to the second ends of any two adjacent auxiliary lines 123 respectively do not intersect, and there is also a second connection on one of the two metal lines intersecting at each of the first connection points 128. Point 126.

In one embodiment, the first touch electrode layer 12 may be a metal, such as aluminum (Al), silver (Ag), gold (Au), cobalt (Co), chromium (Cr), copper (Cu), Indium (In), manganese (Mn), molybdenum (Mo), nickel (Ni), neodymium (Nd), (pd) palladium, platinum (Pt), titanium (Ti), tungsten (W), and zinc (Zn) At least one of them is not limited thereto. In this embodiment, the first touch electrode layer 12 is copper.

Please refer to FIG. 4, which is a schematic plan view of the second touch electrode layer 13 of the touch sensing module of the present invention. The second touch electrode layer 13 includes a plurality of second touch channels 130 that are insulated from each other. The second touch electrode layer 13 includes a plurality of second touch channels 130 that are insulated from each other. It is perpendicular to the extending direction of the first touch channel 120.

The second touch electrode layer 13 includes a plurality of insulated second touch channels 130 and at least one third boundary line 135. Each second touch channel 130 is composed of a metal mesh, and each of the metal meshes is formed by a plurality of metal lines crossing each other. The third boundary lines 135 are formed of a conductive material, and each third boundary line 135 is disposed along an extension direction of a second touch channel 130 and is in contact with the second touch channel. The channel 130 is electrically connected, and the vertex of the metal grid on the side of the second touch channel 130 near the third boundary line 135 is located on the third boundary line 135.

The second touch channel 130 includes a plurality of second main touch channels 132 located in the display area AA and at least one second edge touch channel 131 located at the edge of the display area AA and close to the non-display area NA. The channels 132 and the second edge touch channels 131 are arranged in parallel with each other along the second direction Y.

Please refer to FIG. 5. FIG. 5 is a partially enlarged schematic diagram of the second touch electrode layer 13 of FIG. 4. The second touch electrode layer 13 includes a plurality of metal grids formed by intersecting a plurality of metal lines. The connection point connected by two adjacent metal grids is the first connection point 128.

The second touch channel 130 further includes at least a second main touch channel 132 and at least a fourth boundary line 134. Each fourth boundary line 134 is electrically connected to a second main touch channel 132 or a second The edge touch channel 131 is electrically connected.

In one embodiment, the second touch channel 130 includes a plurality of second main touch channels 132 located in the display area AA, and at least one second edge touch channel 131 located at the edge of the display area AA and close to the non-display area NA. In other embodiments, the number of the second edge touch channels 131 may be two or more. In an embodiment, a fourth boundary line 134 is provided on each side of each second main touch channel 132 along its extension direction (second direction Y). The fourth boundary line 134 and the second main touch channel 132 maintains an electrical connection; in other embodiments, one of two sides of each of the second main touch channels 132 along the extending direction is provided with a fourth boundary line 134 electrically connected thereto, or each second A fourth boundary line 134 is not provided on both sides of the main touch channel 132 along its extending direction. In one embodiment, each second edge touch channel 131 is provided with a third boundary line 135 and a fourth boundary line 134 along both sides of the extending direction. In other embodiments, each second edge touch channel The channel 131 is provided with two third boundary lines 135 on both sides along the extending direction thereof. In an embodiment, the vertex of the metal grid on the side of the second edge touch channel 131 near the third boundary line 135 is located on the third boundary line 135, and the inner edge of the second edge touch channel 131 is perpendicular to the extending direction ( There is only one first connection point 128 in a first direction X) perpendicular to the second direction Y.

The second touch electrode layer 13 is also provided with a plurality of auxiliary lines 123. Each auxiliary line 123 includes a first end and a second end far from the first end. The first end of each auxiliary line 123 and a third boundary line. 135 is electrically connected, the second end is electrically connected to a metal grid adjacent to the first end, and the third boundary line 135 and the auxiliary line 123 are thicker than the fourth boundary line 134. In one embodiment, the auxiliary line 123 is disposed in the second edge touch channel 131. The first end of each auxiliary line 123 is electrically connected to a third boundary line 135, and the second end is adjacent to the first end. A metal grid is electrically connected, specifically, the second end is connected to a metal wire, and the connection point is a second connection point 126. Moreover, the two metal lines connected to the second ends of any two adjacent auxiliary lines 123 respectively do not intersect, and there is also a second connection on one of the two metal lines intersecting at each of the first connection points 128. Point 126.

The second touch electrode layer 13 may be a metal, such as aluminum (Al), silver (Ag), gold (Au), cobalt (Co), chromium (Cr), copper (Cu), indium (In), and manganese. (Mn), molybdenum (Mo), nickel (Ni), neodymium (Nd), (pd) palladium, platinum (Pt), titanium (Ti), tungsten (W), and zinc (Zn), then Not limited to this, in this embodiment, the second touch electrode layer 13 is copper.

The auxiliary line 123 may be a straight line, a curved line, or an irregular line.

The touch sensing module further includes an optical adhesive 15, which covers the first touch electrode layer 12 and the second touch electrode layer 13 which are oppositely disposed.

Hereinabove, specific embodiments of the present invention have been described with reference to the drawings. However, those skilled in the art can understand that, without departing from the spirit and scope of the present invention, various changes and substitutions can be made to the specific embodiments of the present invention. Such changes and substitutions fall within the scope limited by the scope of patent application of the present invention.

Claims (8)

An improvement of a touch sensing module includes: a first touch electrode layer, the first touch electrode layer includes a plurality of first touch channels insulated from each other, and each first touch channel is A metal grid is formed, and each of the metal grids is formed by intersecting a plurality of metal lines; at least one first boundary line is formed of a conductive material, and each first boundary line is along an extending direction of a first touch channel. And is electrically connected to the first touch channel, and the vertex of the metal grid on the side of the first touch channel near the first boundary line is located on the first boundary line; and a plurality of auxiliary lines including the first end And the second end far from the first end, the first end of each auxiliary line is electrically connected to a first boundary line, and the second end is electrically connected to a metal grid adjacent to the first end, arbitrarily adjacent The two metal lines respectively connected to the second ends of the two auxiliary lines do not intersect. The touch sensing module according to claim 1, wherein the first touch channel includes at least one first edge touch channel located at an edge of the first touch electrode layer, and each of the first boundary lines It is located on one side of a first edge touch channel and is electrically connected to the first edge touch channel. The touch sensing module according to claim 2, wherein the first touch channel further includes at least a first main touch channel and at least a second boundary line; each second boundary line and a first The main touch channel is electrically connected to or connected to a first edge touch channel; the first boundary line and the auxiliary line are thicker than the second boundary line. The touch sensing module according to claim 2, wherein: along the extending direction of the first edge touch channel, a connection point connected by any two adjacent metal grids is defined as a first connection point; The edge touch channel has only one first connection point in a direction perpendicular to the extending direction. The touch sensing module according to claim 1, wherein the touch sensing module further includes a second touch electrode layer, and the second touch electrode layer and the first touch electrode are disposed at an insulation distance from each other. The second touch electrode layer includes a plurality of mutually isolated second touch channels, an extension direction of the second touch touch channels is perpendicular to an extension direction of the first touch channels, and each second touch channel is formed by A metal grid is formed, each of the metal grids is formed by staggering a plurality of metal lines; at least one first boundary line is formed of a conductive material, and each first boundary line is disposed along an extension direction of a second touch channel, And is electrically connected to the second touch channel, the vertex of the metal grid on the side of the second touch channel close to the first boundary line is located on the first boundary line; and a plurality of auxiliary lines, including the first end and away from The second end of the first end, the first end of each auxiliary line is electrically connected to a first boundary line, the second end is electrically connected to a metal grid adjacent to the first end, and any adjacent two The two metal wires connected to the second ends of the auxiliary wires are not in phase cross. The touch sensing module according to claim 5, wherein the second touch channel includes at least one second edge touch channel located at an edge of the second touch electrode layer, and each third boundary line It is located on one side of a second edge touch channel and is electrically connected to the second edge touch channel. The touch sensing module according to claim 6, wherein the second touch electrode layer further includes at least a second main touch channel and at least a fourth border line; each fourth border line and a first border line The two main touch channels are electrically connected or connected to a second edge touch channel; the third boundary line and the auxiliary line are thicker than the fourth boundary line. The touch sensing module according to claim 6, wherein: the second edge touch channel extends in a direction extending along the second edge, and the second edge touch channel has only one first connection point in a direction perpendicular to the extending direction.