Touch display panel, touch display device and electronic system

Abstract

This application relates to the field of display technology, and more particularly to a touch display panel, a touch display device, and an electronic system. The touch display panel includes a touch electrode layer, which includes a plurality of touch repeating units. Each touch repeating unit includes a first grid and a second grid that are insulated from each other. The first grid includes a plurality of first touch electrodes and a plurality of first sub-touch electrodes. The plurality of first touch electrodes are spaced apart along a first direction, and each pair of adjacent first touch electrodes is electrically connected through at least one first sub-touch electrode. The second grid includes a plurality of second touch electrodes, which are spaced apart along the first direction. Along the first direction, the first and second touch electrodes are arranged alternately. The ratio of the width of the first touch electrode or the width of the second touch electrode to the width of the touch repeating unit is less than a preset value. The magnetic field distribution between the first and second touch electrodes in the touch display panel is uniform, improving the consistency of stylus writing.

Description

Touch display panel, touch display device and electronic system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of the People's Republic of China on December 27, 2023, with application number 202311831805.6 and application name "A touch display panel, touch display device and electronic system", the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of display technology, and in particular to a touch display panel, a touch display device, and an electronic system. Background Art

[0004] With the advancement of display technology, touch-enabled display devices have become widely used in electronic products such as foldable phones and foldable laptops. To ensure that touch-enabled display devices can be folded with the electronic devices, the thickness of these devices needs to be reduced to meet the foldability requirements of these electronic devices. However, this thinning of touch-enabled display devices results in poor writing performance when using a capacitive stylus pen on them. Summary of the Invention

[0005] Embodiments of the present application provide a touch display panel, a touch display device, and an electronic system. In the touch display panel, the magnetic field between the first touch electrode and the second touch electrode is evenly distributed, thereby improving the consistency of writing with a stylus pen.

[0006] In a first aspect, the present application provides a touch display panel comprising a touch electrode layer, the touch electrode layer comprising a plurality of touch repeating units, the touch repeating units comprising a first grid and a second grid, each insulated from each other. The first grid comprises a plurality of first touch electrodes and a plurality of first sub-touch electrodes, the plurality of first touch electrodes being spaced apart along a first direction and extending along a second direction, with each two adjacent first touch electrodes being electrically connected via at least one first sub-touch electrode. The second grid comprises a plurality of second touch electrodes, the plurality of second touch electrodes being spaced apart along the first direction and extending along the second direction, wherein: along the first direction, the first touch electrodes are staggered with the second touch electrodes, and the ratio of the width of the first touch electrodes or the width of the second touch electrodes to the width of the touch repeating unit is less than a preset value. This arrangement can achieve a more uniform magnetic field distribution between the first touch electrodes and the second touch electrodes. When a touch signal from a stylus is transmitted to the surface of the touch display panel, the fluctuation of the touch signal is minimized, resulting in more consistent writing with the stylus.

[0007] In one embodiment, the preset value is 0.25. Specifically, the preset value can be 0.25, 0.2, about 0.17 or 0.1, etc.

[0008] In one embodiment, in each touch repeating unit, the number of the first touch electrodes or the second touch electrodes is at least four. Specifically, the number of the first touch electrodes and the number of the second touch electrodes can be adjusted according to actual needs.

[0009] In one embodiment, the first touch electrodes and the second touch electrodes are in the shape of bars in the projection of the touch electrode layer, wherein the bars of the first touch electrodes and the second touch electrodes can be understood as rectangles or squares.

[0010] In one embodiment, a first sub-touch electrode is disposed between two adjacent first touch electrodes. The first sub-touch electrode electrically connects the two adjacent first touch electrodes. One first sub-touch electrode divides the gap between the two adjacent first touch electrodes into two first gaps. The two first gaps are spaced apart along the second direction, and multiple first sub-touch electrodes are spaced apart along the first direction. The second touch electrode includes a bridge arm and two second main touch electrodes. A second main touch electrode is disposed in each first gap, and the two second main touch electrodes are electrically connected via the bridge arm. One first sub-touch electrode electrically connects two adjacent first touch electrodes, thereby ensuring uniformity of the magnetic field between the first touch electrode and the second touch electrode while simplifying the structure of the first grid.

[0011] In one embodiment, two first sub-touch electrodes are disposed between two adjacent first touch electrodes. Each of the first sub-touch electrodes is used to electrically connect the two adjacent first touch electrodes. The two first sub-touch electrodes are spaced apart along the second direction. The two first sub-touch electrodes divide the gap between the two adjacent first touch electrodes into three first gaps. The three first gaps are spaced apart along the second direction, and the multiple first sub-touch electrodes are spaced apart along the first direction. The second touch electrode includes two bridge arms and three second main touch electrodes. A second main touch electrode is disposed in each first gap. Along the second direction, two adjacent second main touch electrodes are electrically connected via a bridge arm. This arrangement can improve the strength of the first grid while ensuring the uniformity of the magnetic field between the first touch electrode and the second touch electrode.

[0012] In one embodiment, along the first direction, among the multiple first touch electrodes located between the first touch electrode at the leading end and the first touch electrode at the trailing end, each first touch electrode includes a first segment and a second segment. Along the second direction, a second gap exists between the first segment and the second segment, and the second gap is used to connect two adjacent first gaps. The first gap is the first gap located between the leading end and the trailing end along the second direction. Along the first direction, two adjacent first segments are electrically connected via a first sub-touch electrode, and two adjacent second segments are electrically connected via another first sub-touch electrode.

[0013] In the above embodiment, the second grid includes at least one second sub-touch electrode, which is disposed in a second gap. The second sub-touch electrode is used to electrically connect two adjacent second main touch electrodes along the second direction. In the second direction, the second main touch electrode among the three second main touch electrodes is electrically connected to the second sub-touch electrode. In one embodiment, a second sub-touch electrode may be disposed in each second gap, or in some of the second gaps.

[0014] In one embodiment, three first sub-touch electrodes are disposed between two adjacent first touch electrodes. The three first sub-touch electrodes are spaced apart along the second direction. Each of the three first sub-touch electrodes is used to electrically connect two adjacent first touch electrodes. The three first sub-touch electrodes divide the gap between the two adjacent first touch electrodes into four first gaps. The four first gaps are spaced apart along the second direction, and the multiple first sub-touch electrodes are spaced apart along the first direction. The second touch electrode includes three bridge arms and four third main touch electrodes. One second main touch electrode is disposed in each first gap, and two adjacent second main touch electrodes are electrically connected via a bridge arm. This arrangement improves the strength of the first grid while ensuring uniformity of the magnetic field between the first touch electrodes and the second touch electrodes.

[0015] In one embodiment, along the first direction, among the multiple first touch electrodes located between the first touch electrode at the leading end and the first touch electrode at the trailing end, each first touch electrode includes a first segment, a second segment, and a third segment. Along the second direction, a third gap exists between the first segment and the second segment, and between the second segment and the third segment. The third gap along the first direction is used to connect two adjacent first gaps, wherein the first gap is the first gap located between the leading end and the trailing end along the second direction. It can be understood that the first gap is the second first gap and the third first gap along the second direction.

[0016] In one embodiment, the second grid includes at least one second sub-touch electrode, which is disposed in the third gap and electrically connects two adjacent second main touch electrodes. The number of second sub-touch electrodes can also be adjusted based on actual needs, i.e., the number of second sub-touch electrodes can be adjusted based on the number of first touch electrodes and second touch electrodes.

[0017] In a second aspect, the present application further provides a touch display device comprising the touch display panel of any technical solution of the first aspect. The touch display device further comprises a display screen, an encapsulation layer, and a barrier layer stacked in sequence, with the touch display panel disposed on a side of the barrier layer facing away from the encapsulation layer. The magnetic field generated by the touch display panel is uniformly distributed, ensuring consistent writing with a stylus pen on the display screen.

[0018] In a third aspect, the present application further provides an electronic system comprising an electronic device and a stylus. The electronic device comprises a middle frame and a touch display device, wherein the touch display device is fixed to the middle frame, and the middle frame is used to accommodate the stylus. When the stylus writes on the touch display device, the writing consistency is high. The electronic device may be a foldable mobile phone, a foldable tablet, or a foldable notebook. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of an electronic system provided in an embodiment of the present application;

[0020] FIG2 is a schematic structural diagram of a touch display device provided in an embodiment of the present application;

[0021] FIG3 is a schematic structural diagram of a touch electrode layer provided in an embodiment of the present application;

[0022] FIG4 is a schematic structural diagram of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0023] FIG5 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0024] FIG6 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0025] FIG7 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0026] FIG8 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0027] FIG9 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0028] FIG10 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0029] FIG11 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application;

[0030] FIG12 is a schematic diagram of another structure of a touch-sensitive repeating unit provided in an embodiment of the present application.

[0031] Icons: 1-touch display device; 10-touch display panel; 11-touch electrode layer; 11a-touch repeating unit; 110-first touch electrode; 1100-first segment; 1101-second segment; 1102-second gap; 1103-third segment; 1104-third gap; 111-first sub-touch electrode; 112-second touch electrode; 1120-bridge arm; 1121-second main touch electrode; 113a, 113b, 113c, 113-first gap; 114-second sub-touch electrode; 12-insulating layer; 20-barrier layer; 30-encapsulation layer; 40-display screen; 50-coating; 2-middle frame; 3-stylus pen. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0033] With technological advancements, foldable electronic devices are becoming increasingly popular. During the folding process, the various film layers of the touch display device contained within the device are subjected to forces that generate varying degrees of stress and deformation. These stress and deformation increase as the bending radius decreases. To reduce the stress generated by the touch display device, the thickness of the touch display device is typically reduced to make it suitable for foldable electronic devices.

[0034] However, after the touch display device is thinned, a certain degree of capacitive stylus signal distortion may occur when the capacitive stylus is used to write on the touch display device, resulting in poor consistency in the writing of the capacitive stylus.

[0035] Based on this, the embodiments of the present application provide a touch display panel, a touch display device, and an electronic system to solve the above problems. In order to make the purpose, technical solution, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0036] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the", and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise.

[0037] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0038] FIG1 is a schematic diagram of the structure of an electronic system provided in an embodiment of the present application. Referring to FIG1 , the electronic system includes an electronic device and a stylus 3. The electronic device can generally be a mobile phone, a tablet, or a laptop computer. Specifically, the mobile phone, tablet, and laptop computer can be a foldable mobile phone, a foldable tablet, or a foldable laptop computer. The electronic device includes a middle frame and a touch display device. The touch display device 1 is fixed to the middle frame 2, which is also used to accommodate the stylus 3.

[0039] The present application also provides a touch display device 1, comprising a touch display panel 10, a barrier layer 20, an encapsulation layer 30, and a display screen 40, which are stacked in this order. The touch display device 1 also includes a coating 50, which is disposed on the side of the touch display panel 10 facing away from the barrier layer 20. When used in a foldable electronic device, this touch display device 1 can ensure consistent writing on the display screen using a stylus.

[0040] The structure of the touch display panel is introduced in detail below.

[0041] Continuing with reference to Figure 2, the touch display panel includes a touch electrode layer and an insulating layer, and the bridge arm in the touch electrode layer passes through the insulating layer. Figure 3 is a schematic structural diagram of the touch electrode layer provided in an embodiment of the present application, and Figure 4 is a schematic structural diagram of a touch repeating unit provided in an embodiment of the present application. In Figure 3, the X direction is the first direction, and the Y direction is the second direction. Referring to Figures 3 and 4, the touch electrode layer includes a plurality of touch repeating units 11a, and the touch repeating unit 11a includes a first grid and a second grid. The first grid includes a plurality of first touch electrodes 110 and a plurality of first sub-touch electrodes 111. The plurality of first touch electrodes 110 are arranged at intervals along the first direction X, and the plurality of first touch electrodes 110 all extend along the second direction Y. Every two adjacent first touch electrodes 110 along the first direction X are electrically connected by at least one first sub-touch electrode 111. The second grid includes a plurality of second touch electrodes 112, which are spaced apart along a first direction X and extend along a second direction Y. The first touch electrodes 110 and the second touch electrodes 112 are arranged in an alternating pattern along the first direction X. The ratio of the width a of the first touch electrodes 110 or the width b of the second touch electrodes 112 to the width of the touch repeating unit 11a is less than a predetermined value. This arrangement allows the magnetic field between the first touch electrodes 110 and the second touch electrodes 112 to be more evenly distributed across the surface of the touch display panel. When a touch signal from a stylus is transmitted to the surface of the touch display panel, the touch signal does not undergo drastic changes. This means that the fluctuation in the touch signal is minimal, resulting in more consistent stylus writing.

[0042] It is worth mentioning that the first grid and the second grid are insulated from each other, which can be understood as no electrical connection between the first touch electrode 110 , the first sub-touch electrode 111 and the second touch electrode 112 .

[0043] In one embodiment, the preset value is 0.25, 0.2, or approximately 0.17. Specifically, the number of first touch electrodes 110 is at least four. When there are four first touch electrodes 110, the ratio of the width a of the first touch electrode 110 to the width of the touch repeating unit 11a along the first direction X is 0.25. When there are five first touch electrodes 110, the ratio of the width a of the first touch electrode 110 to the width of the touch repeating unit 11a along the first direction X is 0.2. When there are six first touch electrodes 110, the ratio of the width a of the first touch electrode 110 to the width of the touch repeating unit 11a along the first direction X is approximately 0.17. Similarly, the number of second touch electrodes 112 is at least four. When there are four second touch electrodes 112, the ratio of the width b of the second touch electrode 112 to the width of the touch repeating unit 11a along the first direction is 0.25. When there are five second touch electrodes 112, the ratio of the width b of the second touch electrodes 112 to the width of the touch repeating unit 11a along the first direction is 0.2. When there are six second touch electrodes 112, the ratio of the width b of the second touch electrodes 112 to the width of the touch repeating unit 11a along the first direction is approximately 0.17. The greater the number of first touch electrodes 110 and second touch electrodes 112, the more uniformly the magnetic field between the first touch electrodes 110 and the second touch electrodes 112 is distributed on the surface of the touch display panel, and the more consistent the stylus writing is.

[0044] In the above embodiment, the first touch electrodes 110 and the second touch electrodes 112 are in the shape of bars in the projection of the touch electrode layer, where the bars can be understood as shapes such as rectangles or squares.

[0045] The specific layout of the first and second grids can be various. For this example, there are six second touch electrodes 112. Five first touch electrodes 110 are located between two adjacent second touch electrodes 112 along the first direction X, and the first touch electrodes 110 located at both ends along the first direction X can be considered to divide a single first touch electrode 110 into two parts. This ensures that the first touch electrodes 110 and the second touch electrodes 112 are alternately distributed at least six times along the first direction X, thereby improving the uniformity of the magnetic field between the first touch electrodes 110 and the second touch electrodes 112 on the surface of the touch display panel.

[0046] Continuing with FIG. 4 , in one embodiment, a first sub-touch electrode 111 is disposed between two adjacent first touch electrodes 110 . The plurality of first sub-touch electrodes 111 are spaced apart along a first direction X. The first sub-touch electrodes 111 electrically connect the two adjacent first touch electrodes 110 . Each first sub-touch electrode 111 divides the gap between the two adjacent first touch electrodes 110 into two first gaps 113 . The two first gaps 113 are spaced apart along a second direction Y. The second touch electrode 112 includes a bridge arm 1120 and two second main touch electrodes 1121 . Each first gap 113 is disposed in a second main touch electrode 1121 , and the two second main touch electrodes 1121 are electrically connected via the bridge arm 1120 . When the bridge arm 1120 electrically connects two adjacent second main touch electrodes 1121 along the second direction Y, an insulating layer may be disposed between the bridge arm 1120 and the first grid to prevent electrical connection between the bridge arm 1120 and the first touch electrode 110 or the first sub-touch electrode 111 . In this way, when the touch display panel is applied to a touch display device and the touch display device is foldable, after the barrier layer, packaging layer and display screen included in the touch display device are thinned, when the stylus writes on the display screen, the distortion of the touch signal between the stylus and the display screen is small, thereby improving the consistency of the stylus writing.

[0047] FIG5 is another schematic diagram of the structure of a touch repeating unit provided in an embodiment of the present application. Referring to FIG5 , in one embodiment, two first sub-touch electrodes 111 are disposed between two adjacent first touch electrodes 110. The two first sub-touch electrodes 111 electrically connect the two adjacent first touch electrodes 110. The two first sub-touch electrodes 111 between each pair of adjacent first touch electrodes 110 are spaced apart along the first direction X. The two first sub-touch electrodes 111 are spaced apart along the second direction Y. The two first sub-touch electrodes 111 divide the gap between the two adjacent first touch electrodes 110 into three first gaps 113. The three first gaps 113 are spaced apart along the second direction Y. The second touch electrode 112 includes two bridge arms 1120 and three second main touch electrodes 1121. The three second main touch electrodes 1121 are spaced apart along the second direction Y. A second main touch electrode 1121 is disposed in each first gap 113. A bridge arm 1120 is used to electrically connect two second main touch electrodes 1121 spaced apart along the second direction Y. When the bridge arm 1120 electrically connects two adjacent second main touch electrodes 1121 along the second direction Y, an insulating layer may be provided between the bridge arm 1120 and the first grid to prevent the bridge arm 1120 from electrically connecting to the first touch electrode 110 or the first sub-touch electrode 111. In this manner, when the touch display panel is used in a foldable touch display device, and the barrier layer, encapsulation layer, and display screen of the touch display device are reduced in thickness, when a stylus is used to write on the display, the distortion of the touch signal between the stylus and the display is minimized, thereby improving the consistency of stylus writing.

[0048] FIG6 is another structural schematic diagram of a touch repeating unit provided in an embodiment of the present application. Referring to FIG6 , in one embodiment, along the first direction X, among the multiple first touch electrodes 110 located between the first touch electrode 110 at the head end and the first touch electrode 110 at the tail end, each first touch electrode 110 includes a first segment 1100 and a second segment 1101. It can be understood that the first touch electrode 110 located between two adjacent second touch electrodes 112 includes a first segment 1100 and a second segment 1101. Along the second direction Y, a second gap 1102 exists between the first segment 1100 and the second segment 1101. The second gap 1102 is used to connect two adjacent first gaps 113a. The first gap 113a is the first gap 113 along the second direction Y for arranging the second second main touch electrode 1121, i.e., the second first gap 113a among the three first gaps 113 along the second direction Y.

[0049] It is worth mentioning that the portion of the first touch electrode located between two adjacent second touch electrodes 112 includes a first segment 1100 and a second segment 1101 , that is, the number of the second gaps 1102 can be one, two, three or four.

[0050] Figure 7 is another schematic diagram of the structure of a touch repeating unit provided in an embodiment of the present application. Referring to Figures 6 and 7, in one embodiment, the second grid includes at least one second sub-touch electrode 114. This second sub-touch electrode 114 is disposed in a second gap 1102 and electrically connects two adjacent second main touch electrodes 1121 along the second direction Y. Two adjacent second main touch electrodes 1121 along the first direction X are electrically connected via a bridge arm 1120. The number of second sub-touch electrodes 114 can be one, two, three, four, or five. When there are five second sub-touch electrodes 114, a second sub-touch electrode 114 is disposed in each of the five second gaps 1102 included in the five first touch electrodes 110. The five second sub-touch electrodes 114 electrically connect the six second touch electrodes 112 spaced apart along the first direction X. When there are four second sub-touch electrodes 114, the four second sub-touch electrodes 114 can be disposed in any four second gaps 1102. Figure 8 is a schematic diagram of another embodiment of the touch repeating unit provided in the present application. Referring to Figure 8 , a second gap 1102 located in the middle along the first direction X is not provided with a second touch sub-electrode 114. The configurations for one, two, and three second touch sub-electrodes 114 are similar to those for four second touch sub-electrodes 114 and can be adjusted based on actual needs, so further explanation is omitted here.

[0051] FIG9 is another schematic diagram of the structure of a touch repeating unit provided in an embodiment of the present application. Referring to FIG9 , in one embodiment, three first sub-touch electrodes 111 are disposed between two adjacent first touch electrodes 110. The plurality of first sub-touch electrodes 111 are spaced apart along a first direction X. Three first sub-touch electrodes 111 are disposed between each pair of adjacent first touch electrodes 110. The three first sub-touch electrodes 111 are used to electrically connect the two adjacent first touch electrodes 110. The three first sub-touch electrodes 111 between two first touch electrodes 110 are spaced apart along a second direction Y. The three first sub-touch electrodes 111 divide the gap between the two adjacent first touch electrodes 110 into four first gaps 113. The four first gaps 113 are spaced apart along the second direction Y. The second touch electrode 112 includes three bridge arms 1120 and four second main touch electrodes 1121. The four second main touch electrodes 1121 are arranged at intervals along the second direction Y. A second main touch electrode 1121 is disposed in each first gap 113. One bridge arm 1120 is used to electrically connect two second main touch electrodes 1121 spaced apart along the second direction Y. When the bridge arm 1120 electrically connects two adjacent second main touch electrodes 1121 along the second direction Y, an insulating layer may be disposed between the bridge arm 1120 and the first grid to prevent electrical connection between the bridge arm 1120 and the first touch electrode 110 or the first sub-touch electrode 111.

[0052] It is worth mentioning that the number of first sub-touch electrodes 111 between two adjacent first touch electrodes 110 can be four, five, or more, and the specific number can be adjusted according to actual needs. In addition, along the first direction X, the number of first sub-touch electrodes 111 between each two adjacent first touch electrodes 110 can be the same or different.

[0053] FIG10 is another structural schematic diagram of a touch repeating unit provided in an embodiment of the present application. Referring to FIG10 , in one embodiment, along a first direction X, among the multiple first touch electrodes 110 located between the first touch electrode 110 at the leading end and the first touch electrode 110 at the trailing end, each first touch electrode 110 includes a first segment 1100, a second segment 1101, and a third segment 1103. It can be understood that the first touch electrode 110 located between two adjacent second touch electrodes 112 includes a first segment 1100, a second segment 1101, and a third segment 1103. Along a second direction Y, two third gaps 1104 are present between the first segment 1100, the second segment 1101, and the third segment 1103. The third gaps 1104 are used to connect two adjacent first gaps 113 along the first direction. The first gap 113 is a first gap 113 b and a first gap 113 c along the second direction Y for arranging the second second main touch electrode 1121 and the third second main touch electrode 1121 .

[0054] FIG11 is another structural schematic diagram of a touch repeating unit provided in an embodiment of the present application. Referring to FIG10 and FIG11, in one embodiment, the second grid includes at least one second sub-touch electrode 114. The second sub-touch electrode 114 is disposed in the third gap 1104 to electrically connect two second main touch electrodes 1121 adjacent along the second direction Y. Two second main touch electrodes 1121 adjacent along the first direction X are electrically connected via a bridge arm 1120. The number of second sub-touch electrodes 114 can be 1 to 10. When the number of second sub-touch electrodes 114 is ten, a second sub-touch electrode 114 is disposed in each of the ten third gaps 1104 included in the five first touch electrodes 110. The ten second sub-touch electrodes 114 electrically connect the six second touch electrodes 112 spaced apart along the first direction X. Specifically, the second sub-touch electrode 114 electrically connects to the second main touch electrode 1121 disposed in the first gap 113b, and also electrically connects to the second main touch electrode 1121 disposed in 113c. When there are eight second sub-touch electrodes 114, four of the second sub-touch electrodes 114 are disposed in any four third gaps 1104 between the five first gaps 113b, and the remaining four second sub-touch electrodes 114 are disposed in any four third gaps 1104 between the five first gaps 113c. FIG12 is another structural schematic diagram of a touch repeating unit provided in an embodiment of the present application. Referring to FIG12, the two third gaps 1104 located in the middle along the first direction X are not provided with second sub-touch electrodes 114. The configuration for other numbers of second sub-touch electrodes 114 is similar to that for eight and ten second sub-touch electrodes 114, and can be adjusted according to actual needs, which will not be further described here.

[0055] Obviously, those skilled in the art may make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include these modifications and variations.

Claims

1. A touch display panel, characterized in that, Comprising: A touch electrode layer, the touch electrode layer includes a plurality of touch repeating units, each touch repeating unit includes a first grid and a second grid that are insulated from each other, the first grid includes a plurality of first touch electrodes and a plurality of first sub-touch electrodes, the plurality of first touch electrodes are arranged at intervals in a first direction, the first touch electrodes extend in a second direction, and every two adjacent first touch electrodes are electrically connected by at least one first sub-touch electrode; The second grid includes a plurality of second touch electrodes, the plurality of second touch electrodes are arranged at intervals in the first direction, the second touch electrodes extend in the second direction, wherein: In the first direction, the first touch electrodes and the second touch electrodes are arranged alternately, and the ratio of the width of the first touch electrode or the width of the second touch electrode to the width of the touch repeating unit is less than a preset value.

2. The touch display panel according to claim 1, wherein The preset value is 0.

25.

3. The touch display panel according to claim 1 or 2, characterized in that In each touch repeating unit, the number of the first touch electrodes or the second touch electrodes is at least four.

4. The touch display panel according to claim 1, wherein In the projection of the first touch electrodes and the second touch electrodes on the touch electrode layer, they are strip-shaped.

5. The touch display panel according to any one of claims 1 to 4, characterized in that One first sub-touch electrode is arranged between two adjacent first touch electrodes, the first sub-touch electrode electrically connects the two adjacent first touch electrodes, one first sub-touch electrode divides the gap between the two adjacent first touch electrodes into two first gaps, the two first gaps are arranged at intervals in the second direction, and the plurality of first sub-touch electrodes are arranged at intervals in the first direction; The second touch electrode includes a bridge arm and two second main touch electrodes, one second main touch electrode is arranged in each first gap, and the two second main touch electrodes are electrically connected by the bridge arm.

6. The touch display panel according to any one of claims 1 to 4, characterized in that, Two first sub-touch electrodes are arranged between two adjacent first touch electrodes, both of the two first sub-touch electrodes are used to electrically connect the two adjacent first touch electrodes, the two first sub-touch electrodes are arranged at intervals in the second direction, the two first sub-touch electrodes divide the gap between the two adjacent first touch electrodes into three first gaps, the three first gaps are arranged at intervals in the second direction, and the plurality of first sub-touch electrodes are arranged at intervals in the first direction; The second touch electrode includes two bridge arms and three second main touch electrodes, one second main touch electrode is arranged in each first gap, and two adjacent second main touch electrodes are electrically connected by one bridge arm.

7. The touch display panel according to claim 6, wherein, In the first direction, among the plurality of first touch electrodes between the first touch electrode at the head end and the first touch electrode at the tail end, each first touch electrode includes a first section and a second section, there is a second gap between the first section and the second section in the second direction, and the second gap is used to connect two adjacent first gaps, wherein: The first gap is the first gap located between the head end and the tail end in the second direction.

8. The touch display panel according to claim 7, wherein The second grid includes at least one second sub-touch electrode disposed in the second gap, and the second sub-touch electrode is configured to electrically connect two adjacent second main touch electrodes along the second direction.

9. The touch display panel according to any one of claims 1 to 4, characterized in that Three first sub-touch electrodes are disposed between two adjacent first touch electrodes. The three first sub-touch electrodes are arranged at intervals along the second direction, and all three first sub-touch electrodes are configured to electrically connect two adjacent first touch electrodes. The three first sub-touch electrodes divide the gap between two adjacent first touch electrodes into four first gaps. The four first gaps are arranged at intervals along the second direction, and multiple first sub-touch electrodes are arranged at intervals along the first direction. The second touch electrode includes three bridge arms and four third main touch electrodes. One second main touch electrode is disposed in each first gap, and two adjacent second main touch electrodes are electrically connected through one bridge arm.

10. The touch display panel according to claim 9, wherein Along the first direction, among multiple first touch electrodes between the first touch electrode at the head end and the first touch electrode at the tail end, each first touch electrode includes a first segment, a second segment, and a third segment. There are third gaps between the first segment and the second segment and between the second segment and the third segment along the second direction. The third gaps are configured to connect two adjacent first gaps along the first direction, where: The first gap is the first gap located between the head end and the tail end along the second direction.

11. The touch display panel according to claim 10, wherein The second grid includes at least one second sub-touch electrode disposed in the third gap, and the second sub-touch electrode is configured to electrically connect two adjacent second main touch electrodes.

12. A touch display device, characterized in that, A touch display panel as claimed in any one of claims 1 to 11 is included.

13. The touch display device according to claim 12, wherein The touch display device further includes a display screen, a packaging layer, and a barrier layer stacked in sequence. The touch display panel is disposed on a side of the barrier layer facing away from the packaging layer.

14. An electronic system, characterized in that, The electronic system includes an electronic device and a stylus. The electronic device includes a middle frame and a touch display device as claimed in claim 12 or 13. The touch display device is fixed to the middle frame, and the middle frame is configured to accommodate the stylus.

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