Touch panel and display device

Abstract

The embodiment of the utility model discloses a touch panel and a display device. The touch panel comprises a circular touch electrode layer. The circular touch electrode layer comprises a cross-shaped cutting line, a plurality of arc-shaped cutting lines and a plurality of special-shaped touch electrodes; the cross-shaped cutting lines and the arc-shaped cutting lines are used for dividing the circular touch electrode layer into a plurality of special-shaped touch electrodes with approximately equal areas. According to the scheme, the uniformity of each touch signal generated by the touch panel and the display effect of the display panel can be improved.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to display panel technical field, especially touch panel and display device. BACKGROUND

[0002] Touch technology is commonly used in mobile phone panel, and the single-layer touch panel sensor is distributed in the effective display area, and the electrode block cutting mode of the touch panel sensor is close to horizontal and vertical. When the touch panel is a circular panel, the electrode blocks around the touch panel present irregular shapes, and the area difference with the middle electrode block is too large, resulting in poor uniformity of the touch signals generated between each touch electrode. CONTENT

[0003] The embodiment of the utility model provides a kind of touch panel and display device to improve the uniformity of each touch signal generated by touch panel.

[0004] In the first aspect, the utility model provides a kind of touch panel, and the touch panel includes circular touch electrode layer;

[0005] The circular touch electrode layer includes cross cutting line, multiple arc cutting lines and multiple irregular touch electrodes;

[0006] The cross cutting line and the arc cutting line are used to divide the circular touch electrode layer into multiple irregular touch electrodes with approximately equal areas.

[0007] Optionally, the edge of the circular touch electrode layer includes multiple circumferential division points;

[0008] The cross cutting line includes horizontal reference cutting straight line extending along horizontal direction and longitudinal reference cutting straight line extending along vertical direction;

[0009] The straight line between two circumferential division points in the same horizontal direction as the center of the circular touch electrode layer is the horizontal reference cutting straight line;

[0010] The straight line between two circumferential division points in the same vertical direction as the center of the circular touch electrode layer is the longitudinal reference cutting straight line.

[0011] Optionally, the horizontal reference cutting straight line and the longitudinal reference cutting straight line both include multiple reference division points;

[0012] Each reference division point on the longitudinal reference cutting straight line on the same side of the center of the circular touch electrode layer and the two circumferential division points on the same side of the center of the circular touch electrode layer closest to the horizontal line where the reference division point is located are a circular arc where the two circumferential division points are located, which is an arc cutting line;

[0013] Each of the reference bisecting points on the same side of the center of the circular touch electrode layer as the transverse reference cutting straight line is located and two of the two circumferential bisecting points on the same side of the center of the circular touch electrode layer as the reference bisecting points and closest to a horizontal line on which the reference bisecting points are located form an arc cutting line.

[0014] Optionally, the reference bisecting points divide the transverse reference cutting straight line and the longitudinal reference cutting straight line into a plurality of bisecting line segments.

[0015] The number of the circumferential bisecting points is equal to twice the diameter of the circular touch electrode layer divided by the length of the bisecting line segment.

[0016] Optionally, the length of the bisecting line segment is less than or equal to 5 mm, the length of the bisecting line segment is greater than or equal to 3 mm, and the length of the bisecting line segment is a positive integer.

[0017] Optionally, the circular touch electrode layer is symmetrical about the transverse reference cutting straight line, and the circular touch electrode layer is symmetrical about the longitudinal reference cutting straight line.

[0018] Optionally, each of the irregular touch electrodes further comprises an electrical connection hole.

[0019] The electrical connection hole is arranged at a position away from an edge of the irregular touch electrode.

[0020] Optionally, the irregular touch electrode further comprises a touch signal line.

[0021] The touch signal line is connected with the electrical connection hole, and the extension direction of the touch signal line is the same as the extension direction of the longitudinal reference cutting straight line.

[0022] Optionally, the touch panel further comprises a flexible circuit board, and the flexible circuit board is arranged on one side of the circular touch electrode layer and the extension direction of the longitudinal reference cutting straight line.

[0023] Each of the touch signal lines is connected with the flexible circuit board.

[0024] In a second aspect, the utility model embodiment further provides a display device, the display device comprises the touch panel provided by any embodiment of the utility model.

[0025] This embodiment of the invention divides the circular touch electrode layer into multiple irregularly shaped touch electrodes with approximately equal areas using cross-cutting lines and arc-shaped cutting lines. This reduces the signal intensity differences between the various irregularly shaped touch electrodes in the circular touch electrode layer, thereby improving the uniformity of the touch signals generated by the touch panel. Furthermore, the approximately equal area of ​​each irregularly shaped touch electrode in the circular touch electrode layer results in smaller capacitance differences, causing the common voltage of the electrode blocks around the perimeter and the central electrode block of the touch panel to be essentially the same, thus improving the display effect of the display panel. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of a touch panel provided in the prior art;

[0028] Figure 2 A schematic diagram of the structure of a touch panel provided for any embodiment of this utility model;

[0029] Figure 3 This is a schematic diagram of another touch panel provided in an embodiment of the present utility model;

[0030] Figure 4 This is a schematic diagram of the distribution of irregularly shaped touch electrodes provided for an embodiment of the present utility model. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] Figure 1 A schematic diagram of the structure of a touch panel provided for the prior art, such as Figure 1 As shown, the electrode blocks are cut in a near-horizontal and vertical manner, with the electrode blocks around the touch panel (such as...) Figure 1 The red dot is irregularly shaped and its area differs greatly from that of the central electrode block. This results in a large difference in the signal quantity of the touch signals generated by the electrode blocks around the perimeter of the touch panel and the central electrode block. Consequently, the uniformity of the touch signals generated by the electrode blocks around the perimeter and the central electrode block is poor, leading to difficulties in debugging and a decrease in touch trigger sensitivity.

[0034] In addition, the different areas of the electrode blocks around the perimeter and the middle electrode block of the touch panel result in a large difference in capacitance between them. This causes a difference in the common voltage between the electrode blocks around the perimeter and the middle electrode block, thus affecting the display effect of the display panel.

[0035] To address the aforementioned issues, this utility model provides a touch panel to improve the uniformity of various touch signals generated by the touch panel and the display effect of the display panel. Figure 2 A schematic diagram of the structure of a touch panel provided for any embodiment of this utility model, such as... Figure 2 As shown, the touch panel includes a circular touch electrode layer;

[0036] The circular touch electrode layer includes a cross-shaped cutting line 110, multiple arc-shaped cutting lines 120, and multiple irregularly shaped touch electrodes 130; the cross-shaped cutting line 110 and the arc-shaped cutting line 120 are used to divide the circular touch electrode layer into multiple irregularly shaped touch electrodes 130 with approximately equal areas.

[0037] The cross cutting lines 110 and the arc cutting lines 120 are the dividing lines of each adjacent irregular touch control electrode 130 to isolate the adjacent irregular touch control electrode 130 from being electrically connected. In addition, the cross cutting lines 110 and the arc cutting lines 120 can divide the circular touch control electrode layer into a plurality of irregular touch control electrodes 130 with approximately equal areas, so as to reduce the signal amount difference of the touch control signals generated by each irregular touch control electrode 130 of the circular touch control electrode layer, thereby improving the uniformity of each touch control signal generated by the touch control panel.

[0038] In addition, the areas of each irregular touch control electrode 130 of the circular touch control electrode layer are approximately equal, so that the capacitance difference of each irregular touch control electrode 130 of the circular touch control electrode layer is small, causing the common voltage of the electrode blocks at the four corners of the touch control panel and the electrode blocks in the middle to be substantially consistent, thereby improving the display effect of the display panel.

[0039] On the basis of the above embodiment, optionally, with reference to Figure 2 , the edge of the circular touch control electrode layer comprises a plurality of circumferential division points 140;

[0040] The cross cutting lines 110 include a horizontal reference cutting straight line 111 extending along the horizontal direction and a vertical reference cutting straight line 112 extending along the vertical direction.

[0041] The straight line between two circumferential division points 140 in the same horizontal direction as the center of the circular touch control electrode layer is the horizontal reference cutting straight line 111; and the straight line between two circumferential division points 140 in the same vertical direction as the center of the circular touch control electrode layer is the vertical reference cutting straight line 112.

[0042] The horizontal reference cutting straight line 111 and the vertical reference cutting straight line 112 each include a plurality of reference division points 1111.

[0043] The circular arc between each reference division point 1111 on the same side of the center of the circular touch control electrode layer as the vertical reference cutting straight line 112 and the two circumferential division points 140 on the same side of the center of the circular touch control electrode layer as the two reference division points 1111 and closest to the horizontal line on which the two reference division points 1111 are located is an arc cutting line 120.

[0044] The circular arc between each reference division point 1111 on the same side of the center of the circular touch control electrode layer as the horizontal reference cutting straight line 111 and the two circumferential division points 140 on the same side of the center of the circular touch control electrode layer as the two reference division points 1111 and closest to the horizontal line on which the two reference division points 1111 are located is an arc cutting line 120.

[0045] On the basis of the above embodiment, optionally, with reference to Figure 2The reference dividing point 1111 divides the transverse reference cutting line 111 and the longitudinal reference cutting line 112 into multiple equal segments; the number of circumferential dividing points 140 is equal to twice the diameter of the circular touch electrode layer divided by the length of the equal segments.

[0046] For example, Figure 2 The touch electrode layer has a diameter of 40mm, the length of the equally divided line segment is 5mm, and the number of 140 equally divided points on the circumference is N = 2 * 40 / 5 = 16.

[0047] Based on the above embodiments, optionally, the length of the equally divided line segment is less than or equal to 5mm, the length of the equally divided line segment is greater than or equal to 3mm, and the length of the equally divided line segment is a positive integer.

[0048] Based on the above embodiments, optionally, the circular touch electrode layer is symmetrical about the transverse reference cutting line 111, and the circular touch electrode layer is symmetrical about the longitudinal reference cutting line 112.

[0049] like Figure 2 As shown, the circular touch electrode layer is symmetrical about the horizontal reference cutting line 111 and about the vertical reference cutting line 112, and the circular touch electrode layer can be divided into 40 irregularly shaped touch electrodes 130.

[0050] Based on the above embodiments, optionally, each irregularly shaped touch electrode 130 further includes an electrical connection hole; the electrical connection hole is disposed at a position away from the edge of the irregularly shaped touch electrode 130.

[0051] The electrical connection hole is located at a position away from the edge of the irregularly shaped touch electrode 130, thereby improving the effective outlet of each irregularly shaped touch electrode 130.

[0052] Based on the above embodiments, optionally, Figure 3 This is a schematic diagram of another touch panel provided in an embodiment of the present invention. Figure 3 As shown, each irregularly shaped touch electrode 130 also includes a touch signal line 150; the touch signal line is connected to an electrical connection hole, and the extension direction of the touch signal line 150 is the same as the extension direction of the longitudinal reference cutting line 112.

[0053] The touch signal line 150 extends in the same direction as the vertical reference cutting line 112, which enables the display panel to have a narrow bezel in the direction of the horizontal reference cutting line 111.

[0054] Based on the above embodiments, the touch panel may optionally include a flexible circuit board, which is disposed on one side of the circular touch electrode layer and the extension direction of the longitudinal reference cutting line 112; each touch signal line is connected to the flexible circuit board.

[0055] The flexible circuit board is connected with each of the irregular touch electrodes 130 through a touch signal line of each of the irregular touch electrodes 130, and is used for receiving a touch signal of each of the irregular touch electrodes 130 and sending a common signal for display of the display panel.

[0056] On the basis of the above-mentioned embodiments, optionally, Figure 4 A distribution diagram of the irregular touch electrodes is provided in the embodiments of the present application. Figure 4 The connection sequence and connection serial number of each of the irregular touch electrodes 130 and the flexible circuit board are exemplarily shown. In addition, it should be noted that the connection sequence and connection serial number of each of the irregular touch electrodes 130 and the flexible circuit board can be set by itself according to actual conditions, and the present scheme does not limit this.

[0057] The embodiments of the present application further provide a display device, which comprises the touch panel provided by any of the embodiments of the present application, and therefore has the beneficial effects of the touch panel provided by any of the embodiments of the present application, which will not be repeated here.

[0058] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present application can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions of the present application can be achieved, which are not limited herein.

[0059] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A touch panel, characterized in that, Includes a circular touch electrode layer; The circular touch electrode layer includes a cross-shaped cutting line, multiple arc-shaped cutting lines, and multiple irregularly shaped touch electrodes; The cross-shaped cutting line and the arc-shaped cutting line are used to divide the circular touch electrode layer into multiple irregularly shaped touch electrodes with approximately equal areas.

2. The touch panel according to claim 1, characterized in that, The edge of the circular touch electrode layer includes multiple circumferentially divided points; The cross-cutting line includes a horizontal reference cutting line extending in the horizontal direction and a vertical reference cutting line extending in the vertical direction. The straight line between two equally divided points on the same horizontal direction as the center of the circular touch electrode layer is the horizontal reference cutting line; The straight line between two equally divided points on the circumference of the circular touch electrode layer, which are in the same vertical direction as the center of the circular touch electrode layer, is the longitudinal reference cutting line.

3. The touch panel according to claim 2, characterized in that, Both the transverse reference cutting line and the longitudinal reference cutting line include multiple reference division points; The arc-shaped cutting line is formed by the arc of each of the reference division points on the same side of the center of the circular touch electrode layer and the two circumferential division points on the same side of the center of the circular touch electrode layer that are closest to the horizontal line where the reference division points are located. The arc-shaped cutting line is formed by the arc of each of the reference division points on the same side as the center of the circular touch electrode layer and the two circumferential division points on the same side as the center of the circular touch electrode layer that are closest to the horizontal line where the reference division points are located.

4. The touch panel according to claim 3, characterized in that, The reference dividing points divide the transverse reference cutting line and the longitudinal reference cutting line into multiple equally divided line segments; The number of the circumference division points is equal to twice the diameter of the circular touch electrode layer divided by the length of the dividing line segment.

5. The touch panel according to claim 4, characterized in that, The length of the equally divided line segment is less than or equal to 5 mm, the length of the equally divided line segment is greater than or equal to 3 mm, and the length of the equally divided line segment is a positive integer.

6. The touch panel according to claim 2, characterized in that, The circular touch electrode layer is symmetrical about the horizontal reference line and about the vertical reference line.

7. The touch panel according to claim 2, characterized in that, Each of the aforementioned irregularly shaped touch electrodes also includes an electrical connection hole; The electrical connection hole is located at a position away from the edge of the irregularly shaped touch electrode.

8. The touch panel according to claim 7, characterized in that, Each of the irregularly shaped touch electrodes also includes a touch signal line; The touch signal line is connected to the electrical connection hole, and the extension direction of the touch signal line is the same as the extension direction of the longitudinal reference cutting line.

9. The touch panel according to claim 8, characterized in that, It also includes a flexible circuit board, which is disposed on one side of the circular touch electrode layer and the extension direction of the longitudinal reference cutting line; Each of the aforementioned touch signal lines is connected to the flexible circuit board.

10. A display device, characterized in that, Includes the touch panel as described in any one of claims 1-9.

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