Touch display panel and touch display device

Abstract

This application discloses a touch display panel and a touch display device in which the electromagnetic touch device includes multiple electromagnetic touch signal lines. These multiple electromagnetic touch signal lines include first signal lines and multiple second signal lines. The first signal lines are located in the side bezel area, and the second signal lines are located in the display area. In the first direction, the distance between two adjacent first signal lines is less than the distance between two adjacent second signal lines. This application improves the electromagnetic induction accuracy of the bezel area by adding electromagnetic touch signal lines to the side bezel area, thereby reducing the distortion of edge lines. On the other hand, utilizing the original layout of the electromagnetic touch device, by adding coil signals and sharing electromagnetic touch signal lines, a compensation coil is added to improve the electromagnetic induction accuracy of the bezel area, thereby reducing the distortion of edge lines.

Description

Technical Field

[0001] This application relates to the field of touch display technology, and more particularly to a touch display panel and a touch display device. Background Technology

[0002] With the increasing demand for educational tablets (learning machines, learning and practice machines, etc.), the demand for styluses is also increasing. For educational scenarios, electromagnetic pens offer a better writing experience and eliminate battery anxiety.

[0003] To reduce the overall thickness, existing technologies integrate electromagnetic circuitry into the display panel. However, due to the need for narrow bezels, the maximum number of coil channels x outside the display area xs (bezel area bk) is limited to one channel. Figure 1 As shown. However, the border area has only one channel x, resulting in a smaller signal at the edges, causing significant distortion of written lines at the display edges, such as... Figure 2 As shown. Summary of the Invention

[0004] This application provides a touch display panel and a touch display device to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a touch display panel is provided, including a display area and a side bezel area, wherein the side bezel area is located on one side of the display area, and the touch display panel includes an array substrate, the array substrate comprising: An electromagnetic touch device includes a signal connection line and multiple electromagnetic touch signal lines. The multiple electromagnetic touch signal lines are arranged at intervals along a first direction and extend along a second direction. The first direction and the second direction intersect. The signal connection line is connected to one end of the multiple electromagnetic touch signal lines. The multiple electromagnetic touch signal lines include a first signal line and multiple second signal lines. The first signal line is located in the side frame area and is disposed on the opposite side of the multiple second signal lines. The second signal lines are located in the display area. In one of the side frame regions, there are at least two first signal lines, and in the first direction, the distance between two adjacent first signal lines is less than the distance between two adjacent second signal lines.

[0006] Optionally, in some embodiments of this application, a first signal line is provided at the junction of the display area and the side frame area, and in the first direction, the distance between the first signal lines located at the outermost edges on both sides of the side frame area is less than the distance between two adjacent second signal lines.

[0007] Optionally, in some embodiments of this application, the first signal lines are arranged at equal intervals in the first direction.

[0008] Optionally, in some embodiments of this application, the first signal lines are arranged at non-equidistant intervals in the first direction.

[0009] Optionally, in some embodiments of this application, the distance between two adjacent first signal lines further away from the display area is smaller in the first direction.

[0010] Optionally, in some embodiments of this application, the width of the first signal line is greater than the width of the second signal line.

[0011] Optionally, in some embodiments of this application, the electromagnetic touch device includes a plurality of electromagnetic coils and at least one compensation coil. The electromagnetic coils include the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line, where n ≥ 1, k1 ≥ 2, and n and k1 are both integers. The compensation coil includes the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line, where m ≥ 1, k2 ≥ 2, and m and k2 are both integers. In the first direction, the distance between the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line is different from the distance between the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line. In the side frame area, the area range of one compensation coil and the area range of one electromagnetic coil partially overlap. One electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the electromagnetic coil, and another electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the other electromagnetic coil.

[0012] Optionally, in some embodiments of this application, a first signal line is provided at the junction of the display area and the side frame area, the compensation coil and one of the electromagnetic coils share a first signal line, and the compensation coil and another of the electromagnetic coils share a second signal line.

[0013] According to a second aspect of this application, a touch display panel is provided, including a display area and a side bezel area, wherein one of the side bezel areas is located on one side of the display area, and the touch display panel includes an array substrate, the array substrate comprising: An electromagnetic touch device is disposed in the display area and the side bezel area. The electromagnetic touch device includes a signal connection line and multiple electromagnetic touch signal lines. The multiple electromagnetic touch signal lines are arranged at intervals along a first direction and extend along a second direction. The first direction and the second direction intersect. The signal connection line is connected to one end of the multiple electromagnetic touch signal lines. The electromagnetic touch device includes a plurality of electromagnetic coils and at least one compensation coil. The electromagnetic coils include the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line, where n ≥ 1, k1 ≥ 2, and n and k1 are both integers. The compensation coil includes the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line, where m ≥ 1, k2 ≥ 2, and m and k2 are both integers. In the first direction, the distance between the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line is different from the distance between the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line. In the side frame area, the area range of one compensation coil and the area range of one electromagnetic coil partially overlap. One electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the electromagnetic coil, and another electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the other electromagnetic coil.

[0014] Optionally, in some embodiments of this application, the compensation coil and one of the electromagnetic coils share an electromagnetic touch signal line located in the side frame area, and the compensation coil and another electromagnetic coil share an electromagnetic touch signal line located in the display area.

[0015] Optionally, in some embodiments of this application, the plurality of electromagnetic touch signal lines include a first signal line and a plurality of second signal lines. The first signal line is located in the side frame area and is disposed on the opposite side of the plurality of second signal lines. The second signal lines are located in the display area. A first signal line is disposed at the junction of the display area and the side frame area. The compensation coil and one electromagnetic coil share a first signal line. The compensation coil and another electromagnetic coil share a second signal line.

[0016] Optionally, in some embodiments of this application, the distance between the m-th electromagnetic touch signal line and the (m+k2)-th electromagnetic touch signal line of the compensation coil is less than the distance between the n-th electromagnetic touch signal line and the (n+k1)-th electromagnetic touch signal line of the electromagnetic coil.

[0017] Optionally, in some embodiments of this application, each of the electromagnetic touch signal lines is connected to a signal input terminal and a signal output terminal. In the electromagnetic coil, one of the two electromagnetic touch signal lines is connected to a first signal through the signal input terminal, and the other is connected to output the first signal through the signal output terminal. In the compensation coil, one of the two electromagnetic touch signal lines is connected to a second signal through the signal input terminal, and the other is connected to output the second signal through the signal output terminal.

[0018] According to a third aspect of this application, a touch display device is also provided, comprising the touch display panel and electromagnetic pen described in any of the above embodiments.

[0019] Optionally, in some embodiments of this application, the electromagnetic pen includes a pen body and an electromagnetic coil, the electromagnetic coil being disposed on the pen body, and in the electromagnetic pen, the distance from the edge of the electromagnetic coil near the pen tip to the pen tip is less than or equal to 10 mm.

[0020] In the touch display panel and touch display device of this application embodiment, on the one hand, by adding electromagnetic touch signal lines in the side frame area, the electromagnetic induction accuracy of the frame area is improved, thereby reducing the degree of deformation of the edge lines; on the other hand, by utilizing the original layout of the electromagnetic touch device, by adding coil signals and sharing electromagnetic touch signal lines, a compensation coil is added to improve the electromagnetic induction accuracy of the frame area, thereby reducing the degree of deformation of the edge lines.

[0021] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0024] Figure 1 This is a structural diagram of a touch screen display based on related technologies; Figure 2 This is a display illustration of a touch screen with lines drawn on the edge, based on related technologies; Figure 3 This is a top view of the touch display panel provided in an exemplary embodiment of this disclosure; Figure 4 This is a cross-sectional structural diagram of the array substrate of the touch display panel provided in an exemplary embodiment of this disclosure; Figure 5 This is a top view of another structure of the touch display panel provided in an exemplary embodiment of this disclosure; Figure 6 This is a cross-sectional structural diagram of the array substrate of the touch display panel provided in an exemplary embodiment of this disclosure; Figure 7 This is a schematic diagram of the structure of the touch display device provided in an exemplary embodiment of this disclosure; Figure 8 This is an image showing the effect of drawing lines on the edge of a touch display device provided in an exemplary embodiment of this disclosure.

[0025] Explanation of reference numerals in the attached figures: Touch display panel 100; display area AA; side bezel area NA; array substrate 10; electromagnetic touch device u1; signal connection line u10; electromagnetic touch signal line u20; first signal line u2a; second signal line u2c; first direction F1; second direction F2; first electromagnetic touch group u01; second electromagnetic touch group u02; signal input terminal in1; signal output terminal out1; electromagnetic coil xq1; compensation coil bc1; substrate 101; light shielding layer 111; buffer layer 102; active layer 112; gate insulating layer 103; gate metal layer 113; dielectric layer 104; source / drain metal layer 114; planarization layer 105; wiring metal layer 115; passivation layer 106; common electrode layer 121; protective layer 107; pixel electrode 122; touch display device 1000; electromagnetic pen 200; pen body 21. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0027] This application provides a touch display panel 100; please refer to [link / reference]. Figure 3 and Figure 4 , Figure 3 This is a top view of the touch display panel 100 provided in an exemplary embodiment of this disclosure; Figure 4 This is a cross-sectional structural diagram of the array substrate 10 of the touch display panel 100 provided in an exemplary embodiment of this disclosure.

[0028] This application provides a touch display panel 100. The touch display panel 100 can also be an electroluminescent display panel, a liquid crystal display panel, etc., and this article uses a liquid crystal display panel as an example.

[0029] The touch display panel 100 includes a display area AA and a side bezel area NA. The side bezel area NA is located on one side of the display area AA.

[0030] The touch display panel 100 includes an array substrate 10. If the array substrate 10 is used in a liquid crystal panel, then the array substrate 10 includes pixel electrodes 122. If the array substrate 10 is used in an electroluminescent display panel, such as an organic light-emitting panel, then the array substrate 10 includes an anode.

[0031] Optionally, in some embodiments of this application, the array substrate 10 includes an electromagnetic touch device u1.

[0032] It is understandable that integrating the electromagnetic touch device u1 onto the array substrate 10 avoids the need for external attachment and can reduce the thickness of the display module.

[0033] Optionally, in some embodiments of this application, the electromagnetic touch device u1 includes a signal connection line u10 and multiple electromagnetic touch signal lines u20. The multiple electromagnetic touch signal lines u20 are arranged at intervals along a first direction F1 and extend along a second direction F2, where the first direction F1 and the second direction F2 intersect. The signal connection line u10 is connected to one end of the multiple electromagnetic touch signal lines u20.

[0034] The multiple electromagnetic touch signal lines u20 include a first signal line u2a and multiple second signal lines u2c. The first signal line u2a is located in the side frame area NA and is positioned on the opposite side of the multiple second signal lines u2c. The second signal lines u2c are located in the display area AA.

[0035] Specifically, in one side frame region NA, there are at least two first signal lines u2a. In the first direction F1, the distance d1 between two adjacent first signal lines u2a is less than the distance d2 between two adjacent second signal lines u2c.

[0036] It is understood that in the touch display panel 100 of this application embodiment, by adding an electromagnetic touch signal line u20 to the side bezel area NA, the electromagnetic induction accuracy of the bezel area is improved, thereby reducing the degree of deformation of the edge lines.

[0037] Optionally, the first direction F1 may be perpendicular to the second direction F2.

[0038] It should be noted that the electromagnetic touch device u1 may include a first electromagnetic touch group u01 and a second electromagnetic touch group u02, which are arranged in different layers and intersected. Specifically, in the first electromagnetic touch group u01, multiple electromagnetic touch signal lines u20 are arranged at intervals along a first direction F1 and extend along a second direction F2. A signal connection line u10 is connected to one end of each of the multiple electromagnetic touch signal lines u20 and extends along the first direction F1. In the second electromagnetic touch group u02, multiple electromagnetic touch signal lines u20 are arranged at intervals along the second direction F2 and extend along the first direction F1. A signal connection line u10 is connected to one end of each of the multiple electromagnetic touch signal lines u20 and extends along the second direction F2. The electromagnetic touch signal lines u20 of the first electromagnetic touch group u01 and the electromagnetic touch signal lines u20 of the second electromagnetic touch group u02 are arranged in different layers and intersected. The electromagnetic touch coordinates are jointly determined by the coordinates identified by the first electromagnetic touch group u01 and the second electromagnetic touch group u02.

[0039] Secondly, it's important to understand that during the electromagnetic touch control process, the driving signal is scanned coil by coil. For example, taking an equidistant coil as an example, the driving chip sequentially selects the electromagnetic coil xq1 formed by the 1st and 4th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 2nd and 5th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 3rd and 6th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 4th and 7th electromagnetic touch signal lines u20, and the nth and (n+3rd)th coils. That is, each electromagnetic touch signal line u20 is selected for at most one input and one output.

[0040] Each electromagnetic touch signal line u20 is connected to a signal input terminal in1 and a signal output terminal out1. A complete electromagnetic coil xq1 requires a signal input terminal in1 and a signal output terminal out1 to form a circuit. That is, in the electromagnetic coil xq1, one of the two electromagnetic touch signal lines u20 is connected to the first signal through the signal input terminal in1, and the other outputs the first signal through the signal output terminal out1. In the compensation coil bc1, one of the two electromagnetic touch signal lines u20 is connected to the second signal through the signal input terminal in1, and the other outputs the second signal through the signal output terminal out1.

[0041] For example, if the driver chip scans step by step from left to right, and selects the first and fourth electromagnetic touch signal lines u20 to form a coil, then the signal enters from the signal input terminal in1 of the first electromagnetic touch signal line u20 and exits from the signal output terminal out1 of the fourth electromagnetic touch signal line u20. Similarly, if the fourth and seventh electromagnetic touch signal lines u20 are selected to form a coil, then the signal enters from the signal input terminal in1 of the fourth electromagnetic touch signal line u20 and exits from the signal output terminal out1 of the seventh electromagnetic touch signal line u20.

[0042] Therefore, the embodiments of this application add an electromagnetic touch signal line u20 to the side frame area NA to add a set of gating signals and an electromagnetic coil xq1, thereby improving the recognition accuracy of the edge area of ​​the display area AA and reducing the degree of writing distortion.

[0043] Optionally, in some embodiments of this application, in the first direction F1, the distance between the first signal lines u2a located at the outermost edges on both sides of the side frame area NA is less than the distance between two adjacent second signal lines u2c.

[0044] Understandably, the distance between the first signal lines u2a at the outermost edges of the side bezel area NA is less than the distance between the second signal lines u2c within the display area AA, in order to reduce the bezel width and achieve a narrow bezel. For example, the distance between the first signal lines u2a at the outermost edges of the side bezel area NA can be 2 millimeters.

[0045] Optionally, a first signal line u2a is provided at the junction of the display area AA and the side bezel area NA. However, it is not limited to this; for example, the first signal line u2a closest to the display area AA can also be located at the junction of the display area AA and the side bezel area NA, closer to the side bezel area NA.

[0046] Optionally, in some embodiments of this application, the first signal lines u2a are arranged at equal intervals in the first direction F1.

[0047] It is understandable that the first signal lines u2a are arranged at equal intervals to improve the uniformity of the arrangement of the first signal lines u2a, thereby improving the uniformity of signal sensing.

[0048] Optionally, in some embodiments of this application, the second signal lines u2c are arranged at equal intervals to improve the uniformity of signal sensing.

[0049] Optionally, in some embodiments of this application, the first signal lines u2a are arranged at non-equidistant intervals along the first direction F1. This arrangement can be adjusted according to the sensing intensity of different areas of the side frame region NA, thereby improving the accuracy of sensing.

[0050] Optionally, in some embodiments of this application, the distance d1 between two adjacent first signal lines u2a further away from the display area AA is smaller in the first direction F1.

[0051] It is understandable that increasing the density of the electromagnetic coil xq1 is beneficial for accurate coordinate positioning. Since the electromagnetic signal received at the edge is weaker and the positioning accuracy is lower, the positioning accuracy is improved by reducing the distance d1 of the first signal line u2a, thereby reducing the degree of distortion in the writing.

[0052] Optionally, in some embodiments of this application, the width of the first signal line u2a is greater than the width of the second signal line u2c.

[0053] It is understandable that a larger width of the first signal line u2a is needed to reduce the impedance of the first signal line u2a, increase the energy stored in the coil, and improve the ability to capture electromagnetic signals.

[0054] Optionally, in some embodiments of this application, the electromagnetic touch device u1 includes a plurality of electromagnetic coils xq1 and at least one compensation coil bc1. The electromagnetic coils xq1 include the nth electromagnetic touch signal line u20 and the (n+k1)th electromagnetic touch signal line u20, where n ≥ 1, k1 ≥ 2, and both n and k1 are integers. The compensation coil bc1 includes the mth electromagnetic touch signal line u20 and the (m+k2)th electromagnetic touch signal line u20, where m ≥ 1, k2 ≥ 2, and both m and k2 are integers. In the first direction F1, the distance between the nth electromagnetic touch signal line u20 and the (n+k1)th electromagnetic touch signal line u20 is different from the distance between the mth electromagnetic touch signal line u20 and the (m+k2)th electromagnetic touch signal line u20.

[0055] In the side frame area NA, the area of ​​a compensation coil bc1 and the area of ​​an electromagnetic coil xq1 partially overlap. One electromagnetic touch signal line u20 of the compensation coil bc1 is shared with one electromagnetic touch signal line u20 of the electromagnetic coil xq1, and another electromagnetic touch signal line u20 of the compensation coil bc1 is shared with one electromagnetic touch signal line u20 of the other electromagnetic coil xq1.

[0056] It is understandable that conventional driving scanning methods involve step-by-step scanning, while some embodiments of this application improve the ability to sense electromagnetic signals and enhance the accuracy of sensing by adding a gating signal group instead of an electromagnetic touch signal line u20.

[0057] For example, if compensation coil bc1 is selected as the 2nd and 4th electromagnetic touch signal lines u20, then in the driving scan timing, the driving chip selects sequentially, such as selecting the electromagnetic coil xq1 formed by the 1st and 4th electromagnetic touch signal lines u20, the compensation coil bc1 formed by the 2nd and 4th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 2nd and 5th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 3rd and 6th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 4th and 7th electromagnetic touch signal lines u20, and the nth and (n+3rd)th electromagnetic coil xq1.

[0058] For example, compensation coil bc1 can be used to select the 3rd and 5th electromagnetic touch signal lines u20. Then, during the drive scan timing, the driver chip sequentially selects the electromagnetic coils xq1 formed by the 1st and 4th electromagnetic touch signal lines u20, the electromagnetic coils xq1 formed by the 2nd and 5th electromagnetic touch signal lines u20, the compensation coil bc1 formed by the 3rd and 5th electromagnetic touch signal lines u20, the electromagnetic coils xq1 formed by the 3rd and 6th electromagnetic touch signal lines u20, the electromagnetic coils xq1 formed by the 4th and 7th electromagnetic touch signal lines u20, and the nth and (n+3rd)th electromagnetic coils xq1.

[0059] That is, at least a portion of the first signal line u2a in the side frame region NA is selected at least twice as a signal input line or a signal output line, once to form the electromagnetic coil xq1 and once to form the compensation coil bc1. For example, in the left side frame region NA, at least a portion of the first signal line u2a is selected at least twice as a signal input line. In the right side frame region NA, at least a portion of the first signal line u2a is selected at least twice as a signal output line.

[0060] Optionally, in some embodiments of this application, the compensation coil bc1 and an electromagnetic coil xq1 share a first signal line u2a, and the compensation coil bc1 and another electromagnetic coil xq1 share a second signal line u2c.

[0061] Understandably, due to the need for narrow bezels, the number of electromagnetic touch signal lines u20 that can be arranged in the side bezel area NA is relatively small. Therefore, based on the requirements of sensing range and sensing accuracy of the side bezel area NA, the compensation coil bc1 needs to include a first signal line and a second signal line u2c, and the second signal line u2c of the compensation coil bc1 is closer to the side bezel area NA to reduce the degree of distortion of writing in the edge area of ​​the display area AA.

[0062] Optionally, in some embodiments of this application, the distance d3 between the m-th electromagnetic touch signal line u20 and the (m+k2)-th electromagnetic touch signal line u20 of the compensation coil bc1 is less than the distance d4 between the n-th electromagnetic touch signal line u20 and the (n+k1)-th electromagnetic touch signal line u20 of the electromagnetic coil xq1.

[0063] It is understandable that the distance d3 is less than the distance d4, which makes the width of the compensation coil bc1 smaller than the width of the electromagnetic coil xq1, in order to improve the accuracy of the compensation coil bc1 in recognizing electromagnetic signals.

[0064] Optionally, in some embodiments of this application, the array substrate 10 further includes a substrate 101, a light-shielding layer 111, a buffer layer 102, an active layer 112, a gate insulating layer 103, a gate metal layer 113, a dielectric layer 104, a source / drain metal layer 114, a planarization layer 105, a wiring metal layer 115, a passivation layer 106, a common electrode layer 121, a protective layer 107, and a pixel electrode 122.

[0065] The first electromagnetic touch group u01 is formed on the source / drain metal layer 114, and the second electromagnetic touch group u02 is formed on the trace metal layer 115.

[0066] Please refer to the root. Figure 5 and Figure 6 , Figure 5 This is another top view of the touch display panel 100 provided in an exemplary embodiment of this disclosure; Figure 6 This is a cross-sectional structural diagram of the array substrate 10 of the touch display panel 100 provided in an exemplary embodiment of this disclosure.

[0067] According to a second aspect of this application, an embodiment of this application provides a touch display panel 100, which may also be an electroluminescent display panel, a liquid crystal display panel, etc. This article uses a liquid crystal display panel as an example.

[0068] The touch display panel 100 includes a display area AA and a side bezel area NA. The side bezel area NA is located on one side of the display area AA.

[0069] The touch display panel 100 provided in this application embodiment includes an array substrate 10. Wherein, if the array substrate 10 is used in a liquid crystal panel, the array substrate 10 includes pixel electrodes 122. If the array substrate 10 is used in an electroluminescent display panel, such as an organic light-emitting panel, the array substrate 10 includes an anode.

[0070] Optionally, in some embodiments of this application, the array substrate 10 includes an electromagnetic touch device u1.

[0071] It is understandable that integrating the electromagnetic touch device u1 onto the array substrate 10 avoids the need for external attachment and can reduce the thickness of the display module.

[0072] Optionally, in some embodiments of this application, the electromagnetic touch device u1 includes a signal connection line u10 and multiple electromagnetic touch signal lines u20. The multiple electromagnetic touch signal lines u20 are arranged at intervals along a first direction F1 and extend along a second direction F2, where the first direction F1 and the second direction F2 intersect. The signal connection line u10 is connected to one end of the multiple electromagnetic touch signal lines u20.

[0073] The electromagnetic touch device u1 includes multiple electromagnetic coils xq1 and at least one compensation coil bc1. The electromagnetic coils xq1 include the nth electromagnetic touch signal line u20 and the (n+k1)th electromagnetic touch signal line u20, where n ≥ 1, k1 ≥ 2, and both n and k1 are integers. The compensation coil bc1 includes the mth electromagnetic touch signal line u20 and the (m+k2)th electromagnetic touch signal line u20, where m ≥ 1, k2 ≥ 2, and both m and k2 are integers. In the first direction F1, the distance between the nth and (n+k1)th electromagnetic touch signal lines u20 is different from the distance between the mth and (m+k2)th electromagnetic touch signal lines u20.

[0074] In the side frame area NA, the area of ​​a compensation coil bc1 and the area of ​​an electromagnetic coil xq1 partially overlap. One electromagnetic touch signal line u20 of the compensation coil bc1 is shared with one electromagnetic touch signal line u20 of the electromagnetic coil xq1, and another electromagnetic touch signal line u20 of the compensation coil bc1 is shared with one electromagnetic touch signal line u20 of the other electromagnetic coil xq1.

[0075] It is understood that in the touch display panel 100 of this application embodiment, by using the original layout of the electromagnetic touch device u1, and by adding coil signals and sharing the electromagnetic touch signal line u20, a compensation coil bc1 is added to improve the electromagnetic induction accuracy of the frame area, thereby reducing the degree of deformation of the edge lines.

[0076] Optionally, the first direction F1 may be perpendicular to the second direction F2.

[0077] It should be noted that the electromagnetic touch device u1 may include a first electromagnetic touch group u01 and a second electromagnetic touch group u02, which are arranged in different layers and intersected. Specifically, in the first electromagnetic touch group u01, multiple electromagnetic touch signal lines u20 are arranged at intervals along a first direction F1 and extend along a second direction F2. A signal connection line u10 is connected to one end of each of the multiple electromagnetic touch signal lines u20 and extends along the first direction F1. In the second electromagnetic touch group u02, multiple electromagnetic touch signal lines u20 are arranged at intervals along the second direction F2 and extend along the first direction F1. A signal connection line u10 is connected to one end of each of the multiple electromagnetic touch signal lines u20 and extends along the second direction F2. The electromagnetic touch signal lines u20 of the first electromagnetic touch group u01 and the electromagnetic touch signal lines u20 of the second electromagnetic touch group u02 are arranged in different layers and intersected. The electromagnetic touch coordinates are jointly determined by the coordinates identified by the first electromagnetic touch group u01 and the second electromagnetic touch group u02.

[0078] Secondly, it's important to understand that in the conventional electromagnetic touch driving process, the driving signal is scanned coil by coil. For example, taking an equidistant coil as an example, the driving chip sequentially selects the electromagnetic coil xq1 formed by the 1st and 4th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 2nd and 5th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 3rd and 6th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 4th and 7th electromagnetic touch signal lines u20, and the nth and (n+3rd)th coils. That is, each electromagnetic touch signal line u20 is selected for at most one input and one output.

[0079] Specifically, each electromagnetic touch signal line u20 is connected to a signal input terminal in1 and a signal output terminal out1. A complete electromagnetic coil xq1 requires a signal input terminal in1 and a signal output terminal out1 to form a path. That is, in the electromagnetic coil xq1, one of the two electromagnetic touch signal lines u20 is connected to the first signal through the signal input terminal in1, and the other outputs the first signal through the signal output terminal out1. In the compensation coil bc1, one of the two electromagnetic touch signal lines u20 is connected to the second signal through the signal input terminal in1, and the other outputs the second signal through the signal output terminal out1.

[0080] For example, if the driver chip scans step by step from left to right, and selects the first and fourth electromagnetic touch signal lines u20 to form a coil, then the signal enters from the signal input terminal in1 of the first electromagnetic touch signal line u20 and exits from the signal output terminal out1 of the fourth electromagnetic touch signal line u20. Similarly, if the fourth and seventh electromagnetic touch signal lines u20 are selected to form a coil, then the signal enters from the signal input terminal in1 of the fourth electromagnetic touch signal line u20 and exits from the signal output terminal out1 of the seventh electromagnetic touch signal line u20.

[0081] It is understandable that conventional driving scanning methods involve step-by-step scanning, while the embodiments of this application improve the ability to sense electromagnetic signals and enhance the accuracy of sensing by adding a gating signal group instead of an electromagnetic touch signal line u20.

[0082] For example, if compensation coil bc1 is selected as the first and third electromagnetic touch signal lines u20, then in the driving scan timing, the driving chip sequentially selects the electromagnetic coil xq1 formed by the first and fourth electromagnetic touch signal lines u20, the compensation coil bc1 formed by the first and third electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the second and fifth electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the third and sixth electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the fourth and seventh electromagnetic touch signal lines u20, and the nth and n+3rd electromagnetic coil xq1.

[0083] For example, compensation coil bc1 can be used to select the 2nd and 4th electromagnetic touch signal lines u20. Then, in the driving scan timing, the driving chip sequentially selects the electromagnetic coil xq1 formed by the 1st and 4th electromagnetic touch signal lines u20, the compensation coil bc1 formed by the 2nd and 4th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 2nd and 5th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 3rd and 6th electromagnetic touch signal lines u20, the electromagnetic coil xq1 formed by the 4th and 7th electromagnetic touch signal lines u20, and the nth and (n+3rd)th electromagnetic coil xq1.

[0084] That is, at least a portion of the first signal line u2a in the side frame region NA is selected at least twice as a signal input line or a signal output line, once to form the electromagnetic coil xq1 and once to form the compensation coil bc1. For example, in the left side frame region NA, at least a portion of the first signal line u2a is selected at least twice as a signal input line. In the right side frame region NA, at least a portion of the first signal line u2a is selected at least twice as a signal output line.

[0085] Optionally, in some embodiments of this application, in the first direction F1, the distance between the first signal lines u2a located at the outermost edges on both sides of the side frame area NA is less than the distance between two adjacent second signal lines u2c.

[0086] Understandably, the distance between the first signal lines u2a at the outermost edges of the side bezel area NA is less than the distance between the second signal lines u2c within the display area AA, in order to reduce the bezel width and achieve a narrow bezel. For example, the distance between the first signal lines u2a at the outermost edges of the side bezel area NA can be 2 millimeters.

[0087] Optionally, a first signal line u2a is provided at the junction of the display area AA and the side bezel area NA. However, it is not limited to this; for example, the first signal line u2a closest to the display area AA can also be located at the junction of the display area AA and the side bezel area NA, closer to the side bezel area NA.

[0088] Optionally, in some embodiments of this application, the compensation coil bc1 and an electromagnetic coil xq1 share an electromagnetic touch signal line u20 located in the side frame area NA, and the compensation coil bc1 and another electromagnetic coil xq1 share an electromagnetic touch signal line u20 located in the display area AA.

[0089] Understandably, due to the need for a narrow bezel, the number of electromagnetic touch signal lines u20 that can be arranged in the side bezel area NA is relatively small. Therefore, based on the requirements of sensing range and sensing accuracy of the side bezel area NA, the sensing range of the compensation coil bc1 needs to span the side bezel area NA and the display area AA. Furthermore, the portion of the compensation coil bc1 located in the display area AA is closer to the side bezel area NA to reduce the degree of distortion when writing in the edge area of ​​the display area AA.

[0090] Optionally, in some embodiments of this application, the multiple electromagnetic touch signal lines u20 include a first signal line u2a and multiple second signal lines u2c. The first signal line u2a is located in the side frame area NA and is disposed on the opposite side of the multiple second signal lines u2c. The second signal lines u2c are located in the display area AA. A first signal line u2a is disposed at the junction of the display area AA and the side frame area NA. The compensation coil bc1 and an electromagnetic coil xq1 share a first signal line u2a, and the compensation coil bc1 and another electromagnetic coil xq1 share a second signal line u2c.

[0091] Understandably, due to the need for narrow bezels, the number of electromagnetic touch signal lines u20 that can be arranged in the side bezel area NA is relatively small. Therefore, based on the requirements of sensing range and sensing accuracy of the side bezel area NA, the compensation coil bc1 needs to include a first signal line and a second signal line u2c, and the second signal line u2c of the compensation coil bc1 is closer to the side bezel area NA to reduce the degree of distortion of writing in the edge area of ​​the display area AA.

[0092] Optionally, in some embodiments of this application, the distance d3 between the m-th electromagnetic touch signal line u20 and the (m+k2)-th electromagnetic touch signal line u20 of the compensation coil bc1 is less than the distance d4 between the n-th electromagnetic touch signal line u20 and the (n+k1)-th electromagnetic touch signal line u20 of the electromagnetic coil xq1.

[0093] It is understandable that the distance d3 is less than the distance d4, which makes the width of the compensation coil bc1 smaller than the width of the electromagnetic coil xq1, in order to improve the accuracy of the compensation coil bc1 in recognizing electromagnetic signals.

[0094] Optionally, in some embodiments of this application, the array substrate 10 further includes a substrate 101, a light-shielding layer 111, a buffer layer 102, an active layer 112, a gate insulating layer 103, a gate metal layer 113, a dielectric layer 104, a source / drain metal layer 114, a planarization layer 105, a wiring metal layer 115, a passivation layer 106, a common electrode layer 121, a protective layer 107, and a pixel electrode 122.

[0095] The first electromagnetic touch group u01 is formed on the source / drain metal layer 114, and the second electromagnetic touch group u02 is formed on the trace metal layer 115.

[0096] Please refer to Figure 7 , Figure 7 This is a schematic diagram of the structure of a touch display device 1000 provided in an exemplary embodiment of this disclosure. According to a third aspect of this application, embodiments of this application also provide a touch display device 1000, including the touch display panel 100 and electromagnetic pen 200 described in any of the above embodiments.

[0097] The electromagnetic pen 200 and the touch display panel 100 can be used together to perform writing and other operations.

[0098] It should be noted that the structure of the touch display panel 100 of the touch display device 1000 provided in this application embodiment is similar to or the same as the structure of the touch display panel 100 provided in any of the above embodiments. For details, please refer to... Figures 3-6 The relevant explanations will not be repeated here.

[0099] Optionally, in some embodiments of this application, the electromagnetic pen 200 includes a pen body 21 and an electromagnetic coil xq1. The electromagnetic coil xq1 is disposed on the pen body 21. In the electromagnetic pen 200, the distance d5 from the edge of the electromagnetic coil xq1 near the pen tip to the pen tip is less than or equal to 10 mm.

[0100] It is understandable that the greater the distance between the electromagnetic coil xq1 of the electromagnetic pen 200 and the touch display panel 100, the more difficult it is for the energy emitted by the electromagnetic coil xq1 of the electromagnetic pen 200 to be received by the electromagnetic touch device u1, especially in the display edge area. Therefore, this application moves the electromagnetic coil xq1 of the electromagnetic pen 200 downward to reduce the distance between the electromagnetic coil xq1 of the electromagnetic pen 200 and the touch display panel 100, so that the display edge area can better receive the energy emitted by the electromagnetic pen 200 and increase the number of effective signal channels.

[0101] Optionally, in the electromagnetic pen 200, the distance d5 from the edge of the electromagnetic coil xq1 near the pen tip of the pen body 21 to the pen tip can be 10 mm, 9 mm, 8 mm, 7 mm, 6 mm, 5 mm, 4 mm, 3 mm, 2 mm, or 1 mm.

[0102] Optionally, in the electromagnetic pen 200, the distance d5 from the edge of the electromagnetic coil xq1 near the pen tip to the pen tip is greater than or equal to 5 mm to improve the appearance of the pen tip.

[0103] Optionally, based on Figure 5 In the embodiment shown, the touch display panel 100, combined with the electromagnetic coil xq1 of the electromagnetic pen 200, is lowered, which can better improve the degree of writing distortion in the display edge area, such as... Figure 8 As shown, comparison Figure 2 .

[0104] In the touch display device 1000 of this application embodiment, on the one hand, by adding an electromagnetic touch signal line u20 to the side frame area NA, the electromagnetic induction accuracy of the frame area is improved, thereby reducing the degree of deformation of the edge lines; on the other hand, by utilizing the original layout of the electromagnetic touch device u1, by adding a coil signal and sharing the electromagnetic touch signal line u20, a compensation coil bc1 is added to improve the electromagnetic induction accuracy of the frame area, thereby reducing the degree of deformation of the edge lines.

[0105] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0106] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0107] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0108] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A touch display panel, comprising a display area and a side bezel area, wherein the side bezel area is located on one side of the display area, characterized in that, The touch display panel includes an array substrate, the array substrate comprising: An electromagnetic touch device includes a signal connection line and multiple electromagnetic touch signal lines. The multiple electromagnetic touch signal lines are arranged at intervals along a first direction and extend along a second direction. The first direction and the second direction intersect. The signal connection line is connected to one end of the multiple electromagnetic touch signal lines. The plurality of electromagnetic touch signal lines include a first signal line and a plurality of second signal lines. The first signal line is located in the side frame area and is disposed on the opposite side of the plurality of second signal lines. The second signal lines are located in the display area. In one of the side frame regions, there are at least two first signal lines, and in the first direction, the distance between two adjacent first signal lines is less than the distance between two adjacent second signal lines.

2. The touch display panel according to claim 1, characterized in that, A first signal line is provided at the junction of the display area and the side frame area. In the first direction, the distance between the first signal lines located at the outermost edges on both sides of the side frame area is less than the distance between two adjacent second signal lines.

3. The touch display panel according to claim 1, characterized in that, In the first direction, the first signal lines are arranged at equal intervals.

4. The touch display panel according to claim 1, characterized in that, In the first direction, the first signal lines are arranged at non-equidistant intervals.

5. The touch display panel according to claim 4, characterized in that, In the first direction, the distance between two adjacent first signal lines that are further away from the display area is smaller.

6. The touch display panel according to any one of claims 1-5, characterized in that, The width of the first signal line is greater than the width of the second signal line.

7. The touch display panel according to any one of claims 1-5, characterized in that, The electromagnetic touch device includes a plurality of electromagnetic coils and at least one compensation coil. The electromagnetic coils include the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line, where n ≥ 1, k1 ≥ 2, and n and k1 are both integers. The compensation coil includes the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line, where m ≥ 1, k2 ≥ 2, and m and k2 are both integers. In the first direction, the distance between the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line is different from the distance between the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line. In the side frame area, the area range of one compensation coil and the area range of one electromagnetic coil partially overlap. One electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the electromagnetic coil, and another electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the other electromagnetic coil.

8. The touch display panel according to claim 7, characterized in that, A first signal line is provided at the junction of the display area and the side frame area. The compensation coil and one electromagnetic coil share a first signal line, and the compensation coil and another electromagnetic coil share a second signal line.

9. A touch display panel, comprising a display area and a side bezel area, wherein the side bezel area is located on one side of the display area, characterized in that, The touch display panel includes an array substrate, the array substrate comprising: An electromagnetic touch device is disposed in the display area and the side bezel area. The electromagnetic touch device includes a signal connection line and multiple electromagnetic touch signal lines. The multiple electromagnetic touch signal lines are arranged at intervals along a first direction and extend along a second direction. The first direction and the second direction intersect. The signal connection line is connected to one end of the multiple electromagnetic touch signal lines. The electromagnetic touch device includes a plurality of electromagnetic coils and at least one compensation coil. The electromagnetic coils include the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line, where n ≥ 1, k1 ≥ 2, and n and k1 are both integers. The compensation coil includes the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line, where m ≥ 1, k2 ≥ 2, and m and k2 are both integers. In the first direction, the distance between the nth electromagnetic touch signal line and the (n+k1)th electromagnetic touch signal line is different from the distance between the mth electromagnetic touch signal line and the (m+k2)th electromagnetic touch signal line. In the side frame area, the area range of one compensation coil and the area range of one electromagnetic coil partially overlap. One electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the electromagnetic coil, and another electromagnetic touch signal line of the compensation coil is shared with one electromagnetic touch signal line of the other electromagnetic coil.

10. The touch display panel according to claim 9, characterized in that, The compensation coil and one of the electromagnetic coils share an electromagnetic touch signal line located in the side frame area, and the compensation coil and another electromagnetic coil share an electromagnetic touch signal line located in the display area.

11. The touch display panel according to claim 10, characterized in that, The plurality of electromagnetic touch signal lines include a first signal line and a plurality of second signal lines. The first signal line is located in the side frame area and is disposed on the opposite side of the plurality of second signal lines. The second signal lines are located in the display area. A first signal line is disposed at the junction of the display area and the side frame area. The compensation coil and one electromagnetic coil share a first signal line. The compensation coil and another electromagnetic coil share a second signal line.

12. The touch display panel according to any one of claims 8-10, characterized in that, The distance between the m-th electromagnetic touch signal line and the (m+k2)-th electromagnetic touch signal line of the compensation coil is less than the distance between the n-th electromagnetic touch signal line and the (n+k1)-th electromagnetic touch signal line of the electromagnetic coil.

13. The touch display panel according to any one of claims 8-10, characterized in that, Each of the electromagnetic touch signal lines is connected to a signal input terminal and a signal output terminal. In the electromagnetic coil, one of the two electromagnetic touch signal lines is connected to a first signal through the signal input terminal, and the other is connected to output the first signal through the signal output terminal. In the compensation coil, one of the two electromagnetic touch signal lines is connected to a second signal through the signal input terminal, and the other is connected to output the second signal through the signal output terminal.

14. A touch display device, characterized in that, Including electromagnetic pens and touch display panels as described in any one of claims 1-13.

15. The touch display device according to claim 14, characterized in that, The electromagnetic pen includes a pen body and an electromagnetic coil. The electromagnetic coil is disposed on the pen body. In the electromagnetic pen, the distance from the edge of the electromagnetic coil near the pen tip to the pen tip is less than or equal to 10 mm.

Images