TOUCH SCREEN AND TOUCH SENSING ASSEMBLY THEREOF

A touch screen and a touch sensing assembly thereof are provided, the touch sensing assembly includes a substrate and an electrode array disposed thereon, the electrode array includes a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along a second direction. Two first conductive bridges connect two adjacent first electrodes along the first direction, two second conductive bridges connect two adjacent second electrodes along the second direction. The touch sensing assembly further includes an insulating layer disposed between the first conductive bridges and the second conductive bridges. According to the touch sensing assembly provided by the disclosure, two adjacent first electrodes can still be conducted when one of the first conductive bridges is broken, identically, two adjacent second electrodes can also be conducted when one of the second conductive bridges is broken, improve sensing effects of the touch sensing assembly.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The disclosure relates to a touch screen manufacture technical field, and more particularly to a touch screen and a touch sensing assembly thereof.

2. Discussion of the Related Art

In recent years, a touch screen gradually substitutes a keyboard or a pointing device to be an input device of a portable terminal. An ITO transparent conductive thin film is plated on a surface of a substrate and patterned to form an ITO electrode layer in design of a conventional touch screen, the ITO electrode layer includes driving electrodes and sensing electrodes disposed vertically as columns, then adjacent driving electrodes and adjacent sensing electrodes are connected by a metallic conductive bridge respectively, so that the ITO electrode layer is connected and conducted. But in design of the touch screen, if errors occur during deposition of the metallic conductive bridge, an open circuit can be easily caused and the ITO electrode layer cannot be conducted, which affect sensing effects of the touch screen.

SUMMARY

In order to solve shortcomings of a conventional technique, the disclosure provides a touch screen and a touch sensing assembly thereof, which can improve sensing effects of the touch sensing assembly.

The disclosure provides a touch sensing assembly, including a substrate and an electrode array disposed on the substrate, the electrode array includes a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along a second direction. Two first conductive bridges connect two adjacent first electrodes along the first direction, two second conductive bridges connect two adjacent second electrodes along the second direction. The touch sensing assembly further includes an insulating layer disposed between the first conductive bridges and the second conductive bridges.

Wherein the two first conductive bridges are parallel and/or intersecting.

Wherein the two second conductive bridges are parallel and/or intersecting.

Wherein the first electrode includes a first part and a first conductive frame extending from the first part, the first conductive bridge is connected with the first conductive frame of the adjacent first electrode. The second electrode includes a second part and a second conductive frame extending from the second part, the second conductive bridge is connected with the second conductive frame of the adjacent second electrode.

Wherein the first conductive frames of the two adjacent first electrodes extend toward each other.

Wherein the first conductive frames of the two adjacent first electrodes are mutually parallel.

Wherein the second conductive frames of the two adjacent second electrodes extend toward each other.

Wherein the second conductive frames of the two adjacent second electrodes are mutually parallel.

Wherein the touch sensing assembly further includes a dummy section disposed among the first electrodes and the second electrodes, the dummy section is separated from the first electrodes and the second electrodes.

The disclosure further provides a touch screen, including the touch sensing assembly mentioned above.

The disclosure provides the touch screen and the touch sensing assembly thereof, two adjacent first electrodes are connected by two first conductive bridges, two adjacent second electrodes are connected by two second conductive bridges, so that the two adjacent first electrodes can still be conducted when one of the first conductive bridges is broken, identically, the two adjacent second electrodes can also be conducted when one of the second conductive bridges is broken, which can improve sensing effects of the touch sensing assembly.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

Embodiments of the disclosure will be described in detail with reference to the accompanying drawings as follows. However, the disclosure can be achieved in various forms, and the disclosure should not be explained to be limited by the described embodiments. In the contrary, the embodiments are provided for illustrating the principle and practical application of the disclosure, so that a person skilled in the art can understand all kinds of embodiments of the disclosure and modifications adapted to certain anticipation. In the figures, a same label will be utilized to represent an identical element.

A touch sensing assembly provided by the disclosure includes a substrate and an electrode array disposed on the substrate, the electrode array includes a plurality of first electrodes arranged along a first direction and a plurality of second electrodes arranged along a second direction, the first electrodes and the second electrodes are separated mutually, the first electrodes and the second electrodes are on a same side of the substrate. Two first conductive bridges connect two adjacent first electrodes along the first direction, two second conductive bridges connect two adjacent second electrodes along the second direction. The touch sensing assembly further includes an insulating layer disposed between the first conductive bridges and the second conductive bridges.

First Embodiment

Referring toFIG. 1,FIG. 2, a touch sensing assembly provided by the embodiment includes a substrate1and an electrode array2disposed on the substrate1. The substrate is a flexible substrate, material of which is flexible material such as PET, PI or enhanced polycarbonate. The electrode array2includes a plurality of first electrodes21arranged along a first direction and a plurality of second electrodes22arranged along a second direction, the first electrodes21and the second electrodes22are separated mutually, the first direction is an X direction inFIG. 1, the second direction is a Y direction inFIG. 1. The two adjacent first electrodes21along the X direction are connected by two first conductive bridges210, the two adjacent second electrodes22along the Y direction are connected by two second conductive bridges220, the touch sensing assembly further includes an insulating layer23disposed between the first conductive bridges210and the second conductive bridges220.

Specifically, the electrode array2is an ITO thin film, the first conductive bridges210and the second conductive bridges220are metallic wires, for instance, copper, molybdenum, aluminum or an alloy of them. A shape of the first electrodes21and the second electrodes22is rectangular or rhombic, diagonals of the two adjacent first electrodes21along the X direction are on a same line and a direction of the diagonals of the two adjacent first electrodes21and the X direction are parallel, the two first conductive bridges210are disposed between the two adjacent first electrodes21parallel and contacted with two opposite corners of the two adjacent first electrodes21. Identically, diagonals of the two adjacent second electrodes22along the Y direction are on a same line and a direction of the diagonals of the two adjacent second electrodes22and the Y direction are parallel, the two second conductive bridges220are disposed between the two adjacent second electrodes22parallel and contacted with two opposite corners of the two adjacent second electrodes22. The insulating layer23is disposed between the two first conductive bridges210and the two second conductive bridges220, a thickness of the insulating layer23is 50 nm, material of which is SiNx. The embodiment merely enumerates a situation that the two adjacent first electrodes21are connected by the two first conductive bridges210and the two adjacent second electrodes22are connected by the two second conductive bridges220, obviously, the two adjacent first electrodes21can be connected by more than two first conductive bridges210or the two adjacent second electrodes22can be connected by more than two second conductive bridges220according to realty.

In the embodiment, the two adjacent first electrodes21along the X direction are connected by the two first conductive bridges210, when one of the first conductive bridges210is broken, the two adjacent first electrodes21can be connected by the other first conductive bridge210, parallel, the two adjacent second electrodes22along the Y direction are connected by the two second conductive bridges220, when one of the second conductive bridges220is broken, the two adjacent second electrodes22can be connected by the other second conductive bridge220, so as to improve sensing effects of the touch sensing assembly.

The embodiment further provides a touch screen, including the touch sensing assembly mentioned above and FPC3, the first electrodes21arranged along the X direction and the second electrodes22arranged along the Y direction in the electrode array2are connected with FPC3respectively by wires disposed on the substrate1.

Second Embodiment

Referring toFIG. 3, the touch sensing assembly in the embodiment is an improvement of that in the first embodiment, a difference of the touch sensing assembly in the embodiment and the touch sensing assembly in the first embodiment is that the first electrode21includes a first part21aand a first conductive frame21bextending from the first part21a, the second electrode22includes a second part22aand a second conductive frame22bextending from the second part22a.

Specifically, the first conductive frames21bare achieved by extending two opposite parallel sides of the two adjacent first electrodes21respectively, and the first conductive frames21bare between the two adjacent first electrodes21. The two first conductive bridges210are disposed between the two first conductive frames21bparallel and connected with first conductive frames21b, the two first conductive bridges210and the two first conductive frames21bform a rectangle or a rhombus. One of the two first conductive frames21band one of the two first conductive bridges210form a first channel between the two adjacent first electrodes21, the other one of the two first conductive frames21band the other one of the two first conductive bridges210form a second channel between the two adjacent first electrodes21. Equally, the second conductive frames22bare achieved by extending two opposite parallel sides of the two adjacent second electrodes22respectively, and the second conductive frames22bare between the two adjacent second electrodes22. The two second conductive bridges220are disposed between the two second conductive frames22bparallel and connected with the second conductive frames22b, the two second conductive bridges220and the two second conductive frames22bform a rectangle or a rhombus. One of the two second conductive frames22band one of the two second conductive bridges220form a first channel between the two adjacent second electrodes22, the other one of the two second conductive frames22band the other one of the two second conductive bridges220form a second channel between the two adjacent second electrodes22. The insulating layer23(not shown inFIG. 3) is disposed between the two first conductive bridges210and the two conductive bridges220as well as between the two first conductive frames21band the two conductive frames22b.

The embodiment merely enumerates a situation that the two first conductive frames21bare disposed between the two adjacent first electrodes21and the two conductive frames22bare disposed between the two adjacent second electrodes22, obviously, more first conductive bridges210can be disposed between the two adjacent first electrodes21or more second conductive bridges220can be disposed between the two adjacent second electrodes22according to realty.

According to the embodiment, the two first conductive frames21bare disposed between the two first electrodes21and the two second conductive frames22bare disposed between the two second electrodes22, so that a certain distance exists between points of junction of the two first conductive bridges210and the first electrodes21respectively as well as a certain distance exists between points of junction of the two second conductive bridges220and the second electrodes22, which can prevent two points of junction from being too closed so as to cause the two conductive bridges and electrodes to break simultaneously, in order to further improve sensing effects of the touch sensing assembly.

Third Embodiment

Referring toFIG. 4, the touch sensing assembly in the embodiment is an improvement of those in the first embodiment and in the second embodiment, a difference of the touch sensing assembly in the embodiment and the touch sensing assembly in the first embodiment is that the two first conductive bridges210are disposed between the two adjacent first electrodes21across and contacted with two opposite corners of the two adjacent first electrodes21, the two second conductive bridges220are disposed between the two adjacent second electrodes22across and contacted with two opposite corners of the two adjacent second electrodes22. The two first conductive bridges210and the two second conductive bridges220are shown as “X” patterns, the two first conductive bridges210and the two second conductive bridges220are communicated at the points of junction, accordingly, four communication channels are formed between the two adjacent first electrodes21by the two first conductive bridges210and four communication channels are formed between the two adjacent second electrodes22by the two second conductive bridges220.

The two first conductive bridges210and the two conductive bridges220in the embodiment are communicated at the points of junction, four communication channels are formed between the two adjacent first electrodes21and the two adjacent second electrodes22respectively, so as to reduce possibility of fracture between two adjacent electrodes, further improving sensing effects of the touch sensing assembly.

Fourth Embodiment

Referring toFIG. 5, a difference of the embodiment and the first embodiment is that the touch sensing assembly further includes a dummy section24disposed among the first electrodes21and the second electrodes22, the dummy section24is separated from the first electrodes21and the second electrodes22. The dummy section24is disposed in a blank of the electrode array, which is not communicated with the first electrodes21or the second electrodes22.

The dummy section24added in the embodiment can blur boundaries of the adjacent first electrodes21as well as the first electrodes21and the second electrodes22, so as to improve visual effects of the touch sensing assembly.

Above are merely embodiments of the disclosure, improvement and modification obtained by a person skilled in the art according to the principle of the application should be covered by the protected scope of the disclosure.