TW201506743A - Touch panel and touch display device - Google Patents

Abstract

The present invention relates to a touch panel and a touch display device including the touch panel. The touch panel includes a plurality of first electrodes configured to provide a driving signal, and a plurality of second electrodes dielectrically with the first electrodes and configured to output a touch-sensitive signal. The first electrodes cooperate with the second electrodes to form a touch capacitor structure. A minimum area formed by two adjacent first electrodes and two adjacent second electrode defines a dummy field. A dummy pattern insolated to the first electrodes and the second electrodes is disposed in at least a portion art of the dummy field. The dummy pattern are segmented by a first cutting strip and a second cutting strip crossed to each other so as to form a plurality of sub-dummy patterns. At each intersection of the first cutting strip and the second cutting strip, two parts of the second cutting strip located at two opposite sides of the first cutting strip shift are deviated from each other.

Description

Touch panel and touch display device

The present invention relates to a touch panel, and a touch display device having the same.

In recent years, display devices having touch functions have been widely used. At present, the touch panel can be roughly classified into a capacitive type, a resistive type, an optical type, etc., and a capacitive type is a mainstream product. When the touch panel is disposed on the display device, in order to improve the clarity of the image display, the touch panel is made of a material having good light transmittance. However, the position where the touch sensing electrode is disposed in the touch panel and the split band where the touch sensing electrode is not disposed are different in transmittance or reflectance, and the difference is large, resulting in the touch sensing electrode. The visibility is increased and the display is more noticeable, thereby affecting the effect of image display in the display device.

In view of the above, a touch panel having a small difference in transmittance and a small visibility of an electrode structure is provided.

Further, a touch display device having the aforementioned touch panel is provided.

A touch panel includes a plurality of first electrode structures for providing a touch driving signal, and a plurality of second electrode structures electrically separated from the first electrode structure to output a touch sensing signal, the first electrode structure and the The second electrode structure cooperates to form a touch capacitor, and the adjacent two first electrode structures and the adjacent two second electrode structures define a redundant area, and at least a portion of the redundant area is provided with a redundant structure. The redundant structure is electrically separated from the first electrode structure and the second electrode structure, and the redundant structure is divided into a plurality of sub-redundant blocks by a first divided band and a second divided band that intersect each other, wherein the first The dividing strip is at the intersection with the second dividing strip, and the second dividing strips located on both sides of the first dividing strip are offset from each other.

A touch display device includes the above touch panel and a display module for displaying an image, and the touch panel is located at one side of the display module.

Compared with the prior art, the redundant area of the touch panel not provided with the electrode structure is filled with a redundant structure, and the first dividing strip is at the intersection with the second dividing strip, and the two sides of the first dividing strip are located The second dividing strips are offset from each other such that the edges of the plurality of sub-redundant blocks are not visually continuous, thereby reducing the visibility of the electrode structure and the redundant structure.

1 is a schematic plan view showing an embodiment of a touch panel of the present invention.

2 is an enlarged schematic view of the redundant structure shown in FIG. 1.

3 is a schematic exploded view of a modified embodiment of the touch panel of the present invention.

4 is an exploded structure of the touch display device having the touch panel shown in FIG. 1 or 3.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

1 is a schematic view of a planar structure of a touch panel 10 according to the present invention. The touch panel 10 includes a transparent substrate 110 and a touch electrode 120. The touch electrode 120 is disposed on one side of the substrate 110. The touch electrode 120 is configured to sense a touch operation of the user, and output a corresponding touch sensing signal according to the touch operation to identify a location of the touch operation.

The touch electrode 120 includes a first electrode structure 121 disposed parallel to the first direction (Y direction) and spaced apart by the first gap T1; and a second electrode structure 122 disposed parallel to the second direction (X direction) and spaced apart by the second gap R1 . The first electrode structure is electrically separated from the second electrode structure 122. The first direction is perpendicular to the second direction. A redundant area (not labeled) is defined at the intersection of the first gap T1 and the second gap R1, and a redundant structure 123 is disposed in the partially redundant area to fill the adjacent first electrode structure 121 and the second electrode structure. The redundant regions in 122 reduce the visibility of the first electrode structure 121 and the second electrode structure 122.

The first electrode structure 121 is configured to receive a touch driving signal, and a capacitance structure is formed between the first electrode structure 121 and the second electrode structure 122. When the user touches the first electrode structure 121 or the second electrode structure 122 The capacitance between the two electrode structures changes, and the second electrode structure 122 outputs a touch sensing signal corresponding to the change in capacitance.

In this embodiment, the first electrode structure 121 is a plurality of hexagonal sensing blocks (not labeled) formed by a plurality of electrode strings (not labeled) of bridge wires (not labeled), and the plurality of electrode strings are electrically separated from each other. At the same time, the second electrode structure 122 is also composed of a plurality of hexagonal sensing blocks through a plurality of electrode strings (not labeled) of the bridge wires, and the plurality of electrode strings are electrically separated from each other. The first electrode structure 121, the second electrode structure 122, and the redundant structure 123 are all located on the same side of the substrate 110, and are located in the same layer structure, that is, the distance between the first electrode structure 121, the second electrode structure 122, and the redundant structure 123. The height of the substrate 110 is the same.

The material of the redundant structure 123 is the same as that of the first electrode structure 121 and the second electrode structure 122, and is, for example, a transparent ITO (Indium Tin Oxides) conductive material.

In this embodiment, the redundant structure 123 has a rectangular structure, and the rectangular edges thereof and the first electrode structure 121 and the second electrode structure 122 are parallel to each other. Of course, in other modified embodiments of the present invention, the redundant structure 123 may also be a parallelogram or a diamond structure, and is not limited thereto.

Further, please refer to FIG. 2, which is an enlarged schematic view of the redundant structure 123 shown in FIG. 1. The redundant structure 123 is divided into multiple sub-redundant blocks S through the first dividing strip V1 and the second dividing strip V2 that intersect each other. In this embodiment, the first dividing strip V1 penetrates the point on the two opposite sides of the redundant structure 123 in the first direction, and the second dividing strip V2 penetrates the other two opposite sides of the redundant structure 123 in the second direction. The point on the side. The plurality of first dividing strips V1 are separated by a certain distance, and the number of the first dividing strip V1 and the second dividing strip V2 are both two, and the plurality of second dividing strips V2 are also spaced apart by a certain distance, and Includes 4 interchanges. In other embodiments of the present invention, the number of the first dividing strip V1 and the second dividing strip V2 may also be one, and at least one intersection.

At the intersection of the first dividing zone V1 and the second dividing zone V2, the second dividing zone V2 located on both sides of the first dividing zone V1 is offset, that is, the contact point of the second dividing zone V2 and the first dividing zone V1. Do not coincide.

In this embodiment, the first dividing strip V1 and the second dividing strip V2 are each composed of a plurality of sub-dividing strips V11, V12, ..., V1n, and V21, V22, ..., V2m of a straight line segment connected end to end. Where n and m are both natural numbers greater than 1, and the extending directions of the adjacent two sub-dividing strips are perpendicular to each other. The sub-redundant block S is divided into irregular polygon structures combined by a cross-shaped structure via the first divided strip V1 and the second divided strip V2. At the same time, at the intersection, the second dividing strips V2 located on both sides of the first dividing strip V1 are not on the same straight line.

It should be noted that the redundant structure 123 is cut along the first dividing tape V1 and the second dividing tape V2 by an external cutting device, and is divided into a plurality of sub-redundant blocks S separated from each other. The external cutting device can be a laser cutting device.

More specifically, taking the intersection C1 of the first dividing strip V1 and the second dividing strip V2 as an example, the intersection C1 includes the sub-dividing strip V14 in the first dividing strip V1, and the sub-dividing strip V14 is divided into two. a partial sub-dividing zone V25 in the second partial strip V2, wherein the divided sub-dividing strips V25 are respectively located on both sides of the sub-dividing strip V14, and at the same time, there is an offset between the divided sub-dividing strips V25. That is, the contact points of the divided sub-segment tape V25 and the sub-segment tape V14 do not coincide, and are not on the same straight line.

Alternatively, at the intersection, the sub-dividing zone V14 in the first dividing zone V1 may also be divided into two parts by the second dividing zone V2, and the divided sub-segmenting belts V14 are not on the same straight line, and The contact point with the second dividing strip V2 does not coincide.

In addition, the extending directions of the two adjacent sub-dividing strips in the first dividing strip V1 and the second dividing strip V2 may be combined by an acute angle or an obtuse angle, and the shape of the sub-dividing strip may also be The curve shape, correspondingly, the sub-redundant block S can also be an irregular curved multilateral structure.

Compared with the prior art, in the redundant structure 123 formed by the first redundant strip S1 and the sub-redundant block S divided by the second divided strip V2, the second splitting strip has an offset at the intersection of the two divided strips. Therefore, in the sub-redundant block S divided by the plurality of divided bands, the edges of the adjacent sub-redundant blocks S are not continuous in visual effect, thereby reducing the first electrode structure 121, the second electrode structure 122, and the redundancy. Visibility of the remaining structure 123.

FIG. 3 is a schematic exploded view of a touch panel of the present invention. The structure of the touch panel 20 is basically the same as that of the touch panel 10 . The difference is only in the first electrode structure 221 . On the different layer structure of the second electrode structure 222 on the same side of the substrate 210, the first gap T2 of the first electrode structure 221 is provided with a redundant structure 223 at the intersection of the second gap R2 of the second electrode structure 222, and The second gap R2 of the second electrode structure 222 is also provided with a redundant structure 223 at the intersection of the first gap T2 of the first electrode structure 221, and is located in the shape of the first gap T2 and the redundant structure 223 located in the second gap R2. , material and structure, and splicing methods are the same.

It should be noted that, in the modified embodiment, when the first electrode structure 221 and the second electrode structure 222 are located on the same side of the substrate 210, an insulating layer is further disposed between the first electrode structure 221 and the second electrode structure 222. (not shown) such that the two electrode structures are electrically separated from each other.

Alternatively, the first electrode structure 221 and the second electrode structure 222 may also be located on opposite sides of the substrate 210.

Please refer to FIG. 4 , which is a schematic structural diagram of a touch display device having a touch panel as shown in FIG. 1 or FIG. 4 . The touch display device 30 includes a touch panel 10 or a touch panel 20 , and a display module 40 . The display module 40 is used to display an image. In the embodiment, the display module 40 can be implemented by using a liquid crystal display module. The touch panels 10 and 20 are disposed on one side of the display module 40 to implement touch position detection and image display.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and it is not possible to limit the scope of the patent application of the present invention. Equivalent modifications or variations made by persons skilled in the art in light of the spirit of the invention are intended to be included within the scope of the following claims.

10, 20‧‧‧ touch panel

110, 210‧‧‧ substrate

120, 220‧‧‧ touch electrodes

121, 221‧‧‧ first electrode structure

T1, T2‧‧‧ first gap

122, 222‧‧‧ two electrode structure

R1, R2‧‧‧ second gap

123, 223‧‧‧ redundant structure

S‧‧‧Subredundant block

30‧‧‧Touch display device

40‧‧‧Display module

C1‧‧‧ Interchange

V1‧‧‧ first split belt

V2‧‧‧Second division

V14, V25‧‧ ‧ sub-segment

X, Y‧‧ direction

no

10‧‧‧Touch panel

110‧‧‧Substrate

120‧‧‧Touch electrode

121‧‧‧First electrode structure

T1‧‧‧ first gap

122‧‧‧Second electrode structure

R1‧‧‧ second gap

123‧‧‧Redundant structure

X, Y‧‧ direction

Claims (10)

A touch panel includes a plurality of first electrode structures for providing a touch driving signal, and a plurality of second electrode structures electrically separated from the first electrode structure to output a touch sensing signal, the first electrode structure and the first electrode structure The two electrode structures cooperate to form a touch capacitor, and the two adjacent first electrode structures and the adjacent two second electrode structures define a redundant area, and at least a portion of the redundant area is provided with a redundant structure. The redundant structure is electrically separated from the first electrode structure and the second electrode structure, wherein the redundant structure is divided into a plurality of sub-redundant blocks by the first and second divided bands that intersect each other, wherein At the intersection of the first dividing strip and the second dividing strip, the second dividing strips located on both sides of the first dividing strip are offset from each other. The touch panel of claim 1, wherein the number of the first dividing strips is at least one, the number of the second dividing strips is at least one, and the first dividing strip and the second dividing strip comprise at least one Interchange. The touch panel of claim 2, wherein the first dividing strip and the second dividing strip are respectively composed of a sub-dividing strip of a plurality of straight line segments, and an adjacent extending direction of the sub-dividing strip Differently, at the intersection, the contact points of the second dividing strips on both sides of the first dividing strip and in contact with the first dividing strip do not coincide. The touch panel of claim 3, wherein the first dividing strip and the second dividing strip respectively pass through two different positions on the side of the redundant structure, and one sub-divided in the first dividing strip The strip is divided into two parts by the second dividing strip, and the one sub-dividing strip divided into two parts in the first dividing strip does not coincide with the contact point of the second dividing strip. The touch panel of claim 3, wherein the first dividing strip and the adjacent sub-dividing strips of the second dividing strip extend perpendicular to each other. The touch panel of claim 1, wherein the redundant structure is made of the same material as the first electrode structure and the second electrode structure. The touch panel of claim 1, wherein the first electrode structure and the second electrode structure are disposed on a same side of a substrate and are in the same layer structure. The touch panel of claim 1, wherein the first electrode structure and the second electrode structure are disposed on the same side or different sides of a substrate, and the first gap between the adjacent first electrode structures has a first gap. The adjacent second electrode structural member has a second gap, and the redundant portion is disposed at an intersection of the first gap corresponding to the second gap, and at the same time, the second gap corresponds to the first gap The redundant structure is also disposed at the intersection, and the shape, material, structure, and division manner of the redundant structure located in the first gap and the second gap are the same. The touch panel of claim 1, wherein the redundant structure is a quadrilateral structure, and sides of the redundant structure are parallel to the adjacent first electrode structure and the second electrode structure. A touch display device, comprising: the touch panel of any one of the touch panels of claim 1-9, and a display module for displaying an image, wherein the touch panel is located at the display One side of the module.