TWI526896B - Touch display and touch panel thereof - Google Patents

Description

Touch display and touch panel thereof

The invention relates to a touch display and a touch panel thereof.

The sensing principle of the touch panel mainly detects changes in electrical signals or optical signals generated by the touch, and determines the position of the touch by calculating the changes.

In an electronic device (for example, a touch display) that is combined with a touch panel, a mask electrode is usually disposed outside the sensing function area of the touch panel to prevent static electricity from the electronic device from entering the sensing function area, thereby avoiding The touch function of the device is invalid.

During the assembly process of the electronic device, the mask electrode on the outer side of the touch panel sensing functional area abuts against other components such as the outer casing, and is easily crushed by the crushing, thereby eventually causing the mask electrode to completely break and losing the ability to prevent static electricity interference. This reduces the reliability of the device.

In view of the foregoing problems, an embodiment of the present invention provides a touch panel including a substrate, a sensing electrode structure disposed on the substrate, and a mask electrode disposed on the substrate and surrounding the foregoing A periphery of the sensing electrode structure, wherein at least one hollow portion is formed in the mask electrode.

In an embodiment, the mask electrode is annular.

In an embodiment, the annular shape is a rectangle, and the hollow portion is formed on one short side, one long side or a corner of the rectangle.

In one embodiment, a plurality of hollow portions are further formed in the mask electrode, and the hollow portions are formed in one of a group of the short side, the long side, and the corner.

In one embodiment, the hollow portion has an elongated structure and extends in a short axis direction of one of the mask electrodes.

In one embodiment, the mask electrode further includes a plurality of hollow portions, and the hollow portions are arranged in parallel in a longitudinal direction of one of the mask electrodes.

In one embodiment, the mask electrode further includes a plurality of hollow portions each having an elongated structure and disposed at a distance from each other in a longitudinal direction of one of the mask electrodes.

In one embodiment, the hollow portions are arranged in parallel in a short axis direction of the mask electrodes, and the hollow portions are arranged in a misaligned manner in the long axis direction.

In one embodiment, the touch panel further includes a plurality of wires and at least one ground wire, and the sensing electrode structure includes a plurality of sensing electrodes, wherein the wires are electrically connected to the sensing electrodes, and the ground wires are respectively The aforementioned mask electrodes are electrically connected.

According to another embodiment of the present invention, a touch panel includes the touch panel of any one of the preceding embodiments, and a housing, wherein the touch panel is disposed inside the housing, and the mask electrode is abutted The aforementioned outer casing.

The touch display and the touch panel provided by the invention can have prevention and treatment by providing a mask electrode around the sensing electrode structure of the touch panel The electrostatic interference effect, in addition, the design of at least one hollow portion formed in the mask electrode can also avoid the situation that the entire electrode is broken due to the extrusion of the outer casing during the assembly process, and the antistatic capability of the product can be solved. The problem of failure, which in turn increases the reliability of the product.

The above described objects, features, and advantages of the invention will be apparent from the description and appended claims

10‧‧‧Touch panel

20‧‧‧ Shell

102‧‧‧Sensor electrode structure

102a‧‧‧First axial electrode

102b‧‧‧second axial electrode

104‧‧‧Insulation structure

106‧‧‧mask electrode

1061‧‧‧ long sides of the mask electrode

1062‧‧‧ corners of the mask electrode

106a‧‧‧镂空部

108‧‧‧Substrate

110‧‧‧Wire

112‧‧‧ Grounding wire

D‧‧‧ touch display

S‧‧‧Sensor Functional Area

FIG. 1 is a schematic view showing a touch panel according to an embodiment of the present invention.

Fig. 2A is an enlarged view showing a portion A in Fig. 1.

Fig. 2B is a view showing a hollow portion of another embodiment of the present invention.

FIG. 3 is a schematic view showing the assembly of the touch display according to an embodiment of the present invention (the sensing electrode structure is omitted).

As shown in FIG. 1 , the touch panel 10 of the embodiment of the present invention mainly includes a substrate 108 , and a sensing electrode structure 102 and a mask electrode 106 disposed on the substrate 108 . The sensing electrode structure 102 includes at least a first first axial electrode 102a and at least one second axial electrode 102b (in this embodiment, a plurality of first axial electrodes 102a and a plurality of second axial electrodes 102b) The first axial electrodes 102a (sensing electrodes) are arranged parallel to the Y axis, and the second axial electrodes 102b (sensing electrodes) are arranged parallel to the X axis. The first axial electrode 102a and the second axial electrode 102b are non-parallel, and are preferably perpendicular to each other in this embodiment. The mask electrode 106 surrounds the periphery of the sensing electrode structure 102.

Continuing to refer to FIG. 1 , the substrate 108 is also provided with a plurality of wires 110 and at least one grounding wire 112 (including two grounding wires 112 in this embodiment), wherein one of the wires 110 is electrically connected. The first axial electrode 102a and the second axial electrode 102b are connected, and the other end thereof is connected to a circuit on a circuit board (for example, a flexible circuit board, not shown). The range covered by the first axial electrode 102a and the second axial electrode 102b can form a sensing functional area S, can sense the touch from the outside, and transmit the position information to the circuit board through the electronic signal. Thereby, a human-machine interface for touch sensing is realized. In addition, the grounding wire 112 is electrically connected to the shielding electrode 106 and the grounding end of the circuit board, so that the shielding electrode 106 can provide the function of preventing static electricity interference, and can prevent static electricity from entering the sensing functional area S and affecting the device. The performance of the touch function.

In the present embodiment, the sensing electrode structure 102, the mask electrode 106, the wire 110, and the grounding wire 112 are all disposed on the lower surface of the substrate 108, thereby preventing the electrodes from being scratched and affecting the reliability of the device. . In addition, the intersection of the first axial electrode 102a and the second axial electrode 102b is also provided with an insulating structure 104 to prevent the two axial electrodes from forming a short circuit.

Referring to FIGS. 1 and 2A, the mask electrode 106 is annular. In this embodiment, the annular shape is a rectangle, and the short side (such as the side of the A portion shown in FIG. 1). Two elongated hollow portions 106a are formed on the upper portion. In the present embodiment, the slit-shaped hollow portions 106a are preferably arranged in parallel along the long-axis direction (X-axis) of the mask electrode 106, and extend in the short-axis direction (Y-axis) of the mask electrode 106. In an embodiment, the hollow portions 106a may be singular or more.

In another embodiment of the present invention (as shown in FIGS. 1 and 2B), a plurality of elongated hollow portions 106a may be formed in the mask electrode 106, and the hollow portions 106a are attached to the mask electrode 106. The short-axis directions (Y-axis) are spaced apart by a distance and are arranged in parallel in the long-axis direction (X-axis) of the mask electrode 106, wherein the short rows of the rows (in the short-axis direction) are hollowed out The portion 106a can be formed in a misalignment in the short axis direction (Y axis). Alternatively, the hollow portions 106a in an embodiment may be arranged only on a single row and spaced apart in the short-axis direction (Y-axis) at a distance.

It should be understood that the hollow portion 106a may be formed on the long side 1061 of the mask electrode 106, the corner 1062, or a group of the above combinations (including the short side, the long side 1061, and the corner 1062 of the mask electrode 106). One of them is distributed according to the assembly condition of the touch panel 10 in a touch display (described later in the description).

In the above embodiment, the present invention will be described in detail by taking a rectangular shape of the mask electrode as a rectangular shape. In fact, the annular shape of the mask electrode can also be circular, polygonal or other irregular patterns depending on the needs of the actual product.

Through the structural design of the above embodiment, when the touch panel 10 is assembled with the outer casing 20 of a touch display D (refer to the assembly diagram of the display shown in FIG. 3), despite the mask electrode 106 (short side, long The side or corner may be abutted against the outer casing 20 to generate a crack under the action of an external force applied during assembly (such as the arrow shown in FIG. 3), but a partial digging is formed due to the intersection of the mask electrode 106 and the outer casing 20. Empty (the hollow portion 106a), the hollow portion 106a can hinder the spread of the crack, thereby preventing the entire mask electrode 106 from being broken, thereby solving the problem of failure of the antistatic ability of the product, and further improving the reliability of the product.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. Those skilled in the art having the ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

10‧‧‧Touch panel

20‧‧‧ Shell

106‧‧‧mask electrode

106a‧‧‧镂空部

108‧‧‧Substrate

D‧‧‧ touch display

Claims (6)

A touch panel includes: a substrate; a sensing electrode structure disposed on the substrate; and a mask electrode disposed on the substrate and surrounding a periphery of the sensing electrode structure, wherein the mask electrode is formed a plurality of unconnected hollow portions, wherein the hollow portions are spaced apart from each other in a short axis direction of the mask electrode, and are arranged in parallel along a long axis direction of the mask electrode, and the hollow portions are A misalignment is formed in the short axis direction. The touch panel of claim 1, wherein the mask electrode is annular. The touch panel of claim 2, wherein the annular shape is a rectangle, and the hollow portions are formed at a short side, a long side, and a corner of the rectangle. One of the groups. The touch panel of claim 1, wherein each of the hollow portions has an elongated structure extending in the short axis direction of the mask electrode. The touch panel of claim 1, wherein the touch panel further comprises a plurality of wires and at least one ground wire, and the sensing electrode structure comprises a plurality of sensing electrodes, wherein the wires are respectively electrically The sensing electrodes are connected, and the grounding wire is electrically connected to the mask electrode. A touch panel, comprising: the touch panel according to any one of claims 1 to 5; An outer casing, wherein the touch panel is disposed inside the outer casing, and the mask electrode abuts the outer casing.