TWM611278U - Self-capacitive touch structure, touch panel and display device - Google Patents

Abstract

A self-capacitive touch structure, which includes a plurality of touch electrode groups arranged along a first direction, and electrode pull-out areas are distributed between adjacent touch electrode groups; the plurality of touch electrode groups include a plurality of touch electrodes arranged along a second direction, the plurality of the touch electrodes include concave portions and/or convex portions, and a concave portion and a convex portion of adjacent touch electrodes are matched with each other, wherein the first direction is perpendicular to the second direction, and the concave portion and the convex portion are respectively located in the second direction. The self-capacitive touch structure in the present disclosure has an advantage of high accuracy in determining a touch position. In addition, a touch panel and a display device are also provided in the present disclosure.

Description

Self-contained touch structure, touch panel and display device

This creation relates to the field of touch technology, in particular to a self-capacitive touch structure, a touch panel and a display device.

In some electronic display devices, such as smart phones, tablet computers, smart watches, etc., electronic touch technology is widely used, and the touch structure is used to detect the touch position on the touch panel.

The current self-capacitive touch structure schematic diagram is shown in Figures 1 and 2, including touch electrodes arranged in an array. In the lateral direction, between adjacent touch electrodes is an electrode wire area, and the electrode wire area is The invalid touch area can also be referred to as a dead zone. When the touch area is shown as the contact 3 in Figure 1 and Figure 2, the contact 3 will touch the electrode pull-out area 2. The effective area of the touch electrode 1 is not touched, but because the pull of the touch electrode 1 is touched The line causes the touch data to appear, and the touch data is detected by the touch chip so that when the touch chip calculates the touch coordinates, the touch coordinates will shift to the direction of the touch electrode 1, and the calculated touch coordinates will be inaccurate. In addition, since the touch chip is required to change the touch position when judging the touch direction and position change, it must be greater than or equal to two touch electrodes. When the touch position is shown in Figure 2, only one touch can be touched. In the effective area of the electrode, the touch position will not change when the touch position in Figure 2 moves in the vertical direction, that is, the touch coordinates cannot be calculated.

Therefore, how to solve the above technical problems should be the focus of those skilled in the art.

The purpose of this creation is to provide a self-contained touch structure, touch panel and display device to improve touch accuracy.

In order to solve the above technical problems, the present creation provides a self-capacitive touch structure, which includes a plurality of touch electrode groups arranged along a first direction, and electrode wire areas are distributed between adjacent touch electrode groups;

The touch electrode group includes a plurality of touch electrodes arranged along a second direction, the plurality of touch electrodes include concave portions and/or convex portions, and the concave portions and convex portions of adjacent touch electrodes are matched with each other, wherein the first The direction is perpendicular to the second direction, and the concave portion and the convex portion are respectively located in the second direction.

Optionally, the touch electrode includes a plurality of concave portions and a plurality of convex portions.

Optionally, the shape of the concave portion and the convex portion is any one of the following:

Rectangle, triangle, square, trapezoid.

Optionally, when the shape of the concave portion and the convex portion is a rectangle, the length of the rectangle is between 0.5 mm and 7 mm, and the width is between 0.5 mm and 5 mm.

The present invention also provides a touch panel, including any one of the self-capacitive touch structures described above, and a touch chip connected to the touch electrodes.

The present creation also provides a display device, including the above-mentioned touch panel.

The self-capacitive touch structure provided by this creation includes a plurality of touch electrode groups arranged along a first direction, and electrode pull-out areas are distributed between adjacent touch electrode groups; the touch electrode group includes a plurality of The touch electrodes arranged along the second direction, the plurality of touch electrodes include concave portions and/or convex portions, and the concave portions and convex portions of adjacent touch electrodes are matched with each other, wherein the first direction is perpendicular to the second direction, The concave portion and the convex portion are respectively located in the second direction.

It can be seen that the touch electrodes in the self-capacitive touch structure in this creation include concave parts and convex parts. When a pull wire of a touch electrode is touched, the calculated touch coordinates shift to the direction of the touch electrode. Since the adjacent touch electrodes are combined with each other through the concave and convex portions, the convex portion of the touch electrode that is opposite to the direction of the touch electrode can be touched, so that the touch coordinates deviate to the direction of the touch electrode that is touched on the convex portion. Move, so that the final touch coordinates are close to the actual touch position, improving touch accuracy.

In addition, this creation also provides a touch panel and display device with the above-mentioned advantages.

In order to more clearly describe the technical solutions of the creative embodiment or the prior art, the following will briefly introduce the drawings that need to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are merely the creative In some of the embodiments, for those with ordinary knowledge in the field, they can also obtain other schemas based on these schemas without creative work.

In order to enable those with ordinary knowledge in the field to better understand the creation scheme, the creation will be further described in detail below in conjunction with the drawings and specific implementations. Obviously, the described embodiments are only a part of the embodiments of this creation, rather than all the embodiments. Based on the embodiments in this creation, all other embodiments obtained by those with ordinary knowledge in the field without creative work are within the scope of protection of this creation.

In the following description, many specific details are explained in order to fully understand the creation, but this creation can also be implemented in other ways different from those described here. Those with ordinary knowledge in the field can not violate the connotation of this creation. In the case of similar promotion, this creation is not limited by the specific embodiments disclosed below.

As mentioned in the background art section, when the existing self-capacitive touch structure determines the touch coordinates, the touch coordinates will move in the direction of the touch electrode touched by the pull wire, resulting in low touch accuracy.

In view of this, this creation provides a self-contained touch structure, please refer to FIG. 3, which is a schematic structural diagram of a self-contained touch structure provided by the creative embodiment, including:

A plurality of touch electrode groups 4 arranged along the first direction, and electrode pull-out areas 2 are distributed between adjacent touch electrode groups 4;

The touch electrode group 4 includes a plurality of touch electrodes 1 arranged along a second direction, and the plurality of touch electrodes 1 include concave portions 11 and/or convex portions 12, and the concave portions of the touch electrodes 1 are adjacent to each other. 11 and the convex portion 12 are matched with each other, wherein the first direction is perpendicular to the second direction, and the concave portion 11 and the convex portion 12 are respectively located in the second direction.

Specifically, the first direction is horizontal, and the second direction is vertical.

Preferably, the width of the touch electrode 1 is between 4 mm and 7.5 mm, and the purpose is to increase the distance between adjacent touch electrode groups 4, so that when the touch area is fixed, the number of touch electrodes 1 is reduced, thereby reducing The small FPC structure size improves the bonding yield of the FPC and reduces the production cost.

As a specific implementation manner, the touch electrode 1 includes a plurality of the concave portions 11 and a plurality of the convex portions 12, but this creation does not specifically limit this, the concave portion 11 and the convex portion 12 of the touch electrode 1 The number can also be one.

The self-contained touch structure is a single-layer touch structure, as shown in FIG. 2. The specific structure layout is well known to those with ordinary knowledge in the art, and will not be described in detail here.

The shapes of the concave portion 11 and the convex portion 12 include, but are not limited to, any one of a rectangle, a triangle, a square, and a trapezoid.

Optionally, when the shape of the concave portion 11 and the convex portion 12 is a rectangle, the length of the rectangle is between 0.5mm-7mm and the width is between 0.5mm-5mm; when the concave portion 11 and the convex portion When the shape of the portion 12 is a triangle, the side length of the triangle is between 0.5 mm and 7 mm; when the shape of the concave portion 11 and the convex portion 12 is a square, the side length is between 0.5 mm and 5 mm.

Optionally, when the shape of the concave portion 11 and the convex portion 12 is a trapezoid, the trapezoid is an isosceles trapezoid.

The schematic diagram of the touch structure shown in FIG. 3 is used to illustrate the process of improving the touch accuracy in this creation. For ease of description, the touch electrodes 1 in FIG. 2 are numbered with A and B. When the touch position of the contact 3 or the finger is shown in Fig. 3, the touch coordinates will shift to the B direction because the wire of the touch electrode 1 numbered B is touched. However, due to the touch In the structure of the control electrode, the contact 3 touches the convex portion 12 of the touch electrode 1 numbered A at the same time. Compared with the touch electrode structure of the prior art, the touch area of the touch electrode 1 numbered A touched in this embodiment will be Larger, which will cause the touch coordinates to shift to the A direction, so that the final touch coordinates are close to the actual touch position, and the touch accuracy is improved.

In addition, please refer to Fig. 4. The touch position in Fig. 4 is different from that in Fig. 3. For the touch structure in this creation, when the touch position is shown as the contact point 3 in Fig. 4, compared to Fig. 2, When the area of the contact 3 is fixed, the touch structure in this creation can touch the two touch electrodes 1 numbered C and D at the same time, and it will not appear during the movement of the contact 3 and only one touch can be touched. In the case of the effective area of the electrode 1, the direction of the touch position and the change of the position can be determined.

The present invention also provides a touch panel, which includes the self-capacitive touch structure described in the above embodiment and a touch chip connected to the touch electrode.

It should be pointed out that, except for other components in the touch panel of the self-contained touch structure, please refer to the prior art, which will not be described in detail in this creation.

The present creation also provides a display device, which includes the touch panel described in the foregoing embodiment.

Display devices include but are not limited to smart phones, tablets, smart watches, etc.

The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

The self-contained touch structure, touch panel and display device provided by this creation are described in detail above. In this article, specific examples are used to explain the principle and implementation of the creation. The description of the above examples is only used to help understand the methods and core ideas of the creation. It should be pointed out that for those with ordinary knowledge in the field, without departing from the principle of this creation, several improvements and modifications can be made to this creation, and these improvements and modifications also fall within the scope of protection of the patent application for this creation. .

1: touch electrode 2: Electrode pulling area 3: Contact 4: Touch electrode group 11: recess 12: Convex A: Number B: Number C: Number D: Number

FIG. 1 is a schematic diagram of a conventional self-capacitive touch structure at a touch position; FIG. 2 is a schematic diagram of the existing self-capacitive touch structure when it is at another touch position; 3 is a schematic structural diagram of a self-capacitive touch structure provided by an embodiment when a touch position is created; FIG. 4 is a schematic diagram of the structure of the self-capacitive touch structure provided by an embodiment of the creation when it is at another touch position.

1: touch electrode

2: Electrode pulling area

3: Contact

4: Touch electrode group

11: recess

12: Convex

A: Number

B: Number

Claims (6)

A self-contained touch structure, including: A plurality of touch electrode groups arranged along a first direction, and an electrode pull-out area is distributed between adjacent touch electrode groups; and The touch electrode group includes a plurality of one touch electrode arranged along a second direction, the touch electrode includes a concave portion and/or a convex portion, between the concave portion and the convex portion adjacent to the touch electrode Mutual matching, wherein the first direction is perpendicular to the second direction, and the concave portion and the convex portion are respectively located in the second direction. The self-capacitive touch structure according to claim 1, wherein the touch electrode includes a plurality of the concave portions and a plurality of the convex portions. The self-contained touch structure according to claim 1, wherein the shape of the concave portion and the convex portion is any one of the following: rectangle, triangle, square, and trapezoid. The self-contained touch structure according to claim 3, wherein when the shape of the concave portion and the convex portion is a rectangle, the length of the rectangle is between 0.5 mm and 7 mm, and the width is between 0.5 mm and 5 mm. A touch panel includes the self-capacitive touch structure according to any one of claims 1 to 4, and a touch chip connected to the touch electrode. A display device includes the touch panel as described in claim 5.

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