Display panel and display device

Abstract

The utility model provides a display panel and a display device.The display panel comprises a display area and a non-display area and further comprises a touch control layer arranged on a display substrate, the touch control layer comprises a plurality of first electrodes which extend in the first direction and are arranged in the second direction, and the first direction intersects with the second direction; a plurality of second electrodes extending in the second direction and arranged in the first direction; a plurality of third electrodes extending in the first direction and arranged in the second direction; the first electrodes extend in the first direction and are arranged in the first direction, the second electrodes extend in the second direction and are arranged in the first direction, the first electrodes and the second electrodes are capacitive touch electrodes, the third electrodes and the fourth electrodes are magnetic touch electrodes, and the magnetic touch electrodes are arranged in the edge area of the display area in the touch layer. Therefore, the orthographic projection of the magnetic touch electrode on the display substrate surrounds the orthographic projection of the capacitive touch electrode on the display substrate on the inner side of the display area. According to the display panel provided by the invention, the touch precision of the edge of the display area is improved.

Description

Technical Field

[0001] This disclosure relates to the field of display technology, and in particular to a display panel and display device. Background Technology

[0002] With the diversification of online education and work environments, portable electronic products are becoming increasingly popular in business and education, leading to higher demands for human-computer interaction, particularly for touch writing. However, current touch writing accuracy is low at the edges of the display area. Utility Model Content

[0003] To address at least one of the aforementioned problems, a first aspect of this disclosure provides a display panel including a display area and a non-display area surrounding the display area, and further including: a touch layer disposed on a display substrate, the touch layer comprising:

[0004] Multiple first electrodes extend along a first direction and are arranged along a second direction, the first direction intersecting the second direction;

[0005] Multiple second electrodes extend along a second direction and are arranged along a first direction;

[0006] Multiple third electrodes, extending along a first direction and arranged along a second direction; and

[0007] Multiple fourth electrodes, extending along a second direction and arranged along a first direction, include at least one sub-electrode connected in parallel.

[0008] Among them, the first and second electrodes are capacitive touch electrodes, and the third and fourth electrodes are magnetic touch electrodes.

[0009] In this layer, the edge area of ​​the display area is a magnetic touch electrode, so that the orthographic projection of the magnetic touch electrode on the display substrate surrounds the orthographic projection of the capacitive touch electrode on the display substrate inside the display area.

[0010] Optionally, the non-display area includes the corresponding first and second areas, as well as the corresponding third and fourth areas.

[0011] The display panel also includes:

[0012] The first auxiliary electrode includes a first sub-electrode and a second sub-electrode, which extend along a first direction and are respectively arranged in a first region and a second region on both sides of a plurality of third electrodes along a second direction.

[0013] The second auxiliary electrode includes a third sub-electrode and a fourth sub-electrode, which extend along a second direction and are respectively arranged in the third and fourth regions on both sides of a plurality of fourth electrodes along a first direction.

[0014] Optionally, the display panel further includes: a first trace disposed in the third area, wherein the first end of the third electrode and the first end of the first auxiliary electrode are electrically connected to the first trace.

[0015] Optionally, the display panel also includes: a first trace,

[0016] The first wiring includes a first wiring section and a second wiring section located in the third zone.

[0017] The first wiring section electrically connects the first end of a portion of the multiple third electrodes and the first end of the first sub-electrode.

[0018] The second wiring section electrically connects the first end of another portion of the plurality of third electrodes and the first end of the second sub-electrode.

[0019] Optionally, the sub-electrode located in the third region of the third and fourth sub-electrodes is disposed on the side of the first trace away from the display area.

[0020] Optionally, the display panel further includes: a second trace disposed in the first area, wherein the first end of the fourth electrode and the first end of the second auxiliary electrode are electrically connected to the second trace.

[0021] Optionally, the display panel further includes: a second trace, which includes a third trace portion and a fourth trace portion disposed in the first area.

[0022] The third wiring section electrically connects the first end of a portion of the multiple fourth electrodes and the first end of the third sub-electrode.

[0023] The fourth wiring section electrically connects the first end of another part of the plurality of fourth electrodes and the first end of the fourth sub-electrode.

[0024] Optionally, the display panel further includes: a second trace, which includes a third trace portion disposed in the first area and a fourth trace portion disposed in the second area.

[0025] The third wiring section electrically connects the first end of a portion of the multiple fourth electrodes and the first end of the third sub-electrode.

[0026] The fourth wiring section electrically connects the second end of another portion of the multiple fourth electrodes to the second end of the fourth sub-electrode.

[0027] Optionally, the 2a-1th fourth electrode among the plurality of fourth electrodes is electrically connected to the third trace portion, and the 2ath fourth electrode among the plurality of fourth electrodes is electrically connected to the fourth trace portion, where a is an integer greater than or equal to 1.

[0028] Optionally, the non-display area further includes: a plurality of first wirings, and a pad area disposed on the side of the fourth area away from the display area.

[0029] Multiple first wirings are configured one-to-one with the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode. The pad area includes first pads configured one-to-one with the first wirings.

[0030] One end of the first wiring is electrically connected to one of the corresponding first sub-electrode, second sub-electrode, third sub-electrode, and fourth sub-electrode, and the other end is electrically connected to the first pad.

[0031] The width of the first wiring is smaller than the width of the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode that are electrically connected to it.

[0032] Optionally, the width of each of the first and second sub-electrodes is greater than or equal to 60 μm, the width of each of the third and fourth sub-electrodes is greater than or equal to 60 μm, and / or

[0033] The resistance of each of the first and second sub-electrodes is equal to the resistance of the fourth electrode, and the resistance of each of the third and fourth sub-electrodes is equal to the resistance of the fourth electrode.

[0034] Optionally, the plurality of first pads include first sub-pads.

[0035] The length of the fourth sub-electrode is equal to the length of the fourth electrode.

[0036] A first wiring electrically connected to the fourth sub-electrode is disposed in the fourth region, and the extension direction of the connection region where the first wiring is electrically connected to the fourth sub-electrode intersects with the second direction.

[0037] A second aspect of this disclosure provides a display device including the display panel described above.

[0038] The beneficial effects of this disclosure are as follows:

[0039] This disclosure addresses existing problems by providing a display panel and display device. By placing magnetic touch electrodes at the edge of the display area and ensuring that the orthographic projection of the magnetic touch electrodes on the display substrate surrounds the orthographic projection of the capacitive touch electrodes on the display substrate within the display area, the touch accuracy of electromagnetic touch at the edge of the display area is improved without affecting the accuracy of capacitive touch, thus enhancing edge writing accuracy and having broad application prospects. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 A schematic cross-sectional view of a display panel according to an embodiment of the present disclosure is shown;

[0042] Figure 2 A schematic top view of a display panel according to an embodiment of the present disclosure is shown;

[0043] Figure 3 Show Figure 2 An example of the actual structure of region A in the middle;

[0044] Figure 4 A schematic top view of a display panel according to an embodiment of the present disclosure is shown;

[0045] Figure 5 Show Figure 2 An example of the actual structure of region B in the middle;

[0046] Figures 6 to 9 A schematic top view of a display panel according to other embodiments of the present disclosure is shown. Detailed Implementation

[0047] To more clearly illustrate this disclosure, the preferred embodiments and accompanying drawings will be used for further description. Similar components in the drawings are indicated by the same or similar reference numerals. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this disclosure.

[0048] It should be noted that the terms "having," "comprising," and "including" used in this disclosure are all open-ended, meaning that when a module is described as "having," "comprising," or "including" a first element, a second element, and / or a third element, it indicates that the module includes other elements besides the first, second, and / or third elements. Furthermore, the ordinal numbers "first," "second," and "third" used in this disclosure are not intended to define a specific order, but only to distinguish between the various parts. In this disclosure, when describing layer A and layer B as "co-located," it means that layer A and layer B are manufactured using the same materials and processes.

[0049] To further address one of the above problems, embodiments of this disclosure provide a display panel including a display area and a non-display area surrounding the display area, and further including: a touch layer disposed on a display substrate, the touch layer comprising:

[0050] Multiple first electrodes extend along a first direction and are arranged along a second direction, the first direction intersecting the second direction;

[0051] Multiple second electrodes extend along a second direction and are arranged along a first direction;

[0052] Multiple third electrodes, extending along a first direction and arranged along a second direction; and

[0053] Multiple fourth electrodes, extending along a second direction and arranged along a first direction, include at least one sub-electrode connected in parallel.

[0054] Among them, the first and second electrodes are capacitive touch electrodes, and the third and fourth electrodes are magnetic touch electrodes.

[0055] In this layer, the edge area of ​​the display area is a magnetic touch electrode, so that the orthographic projection of the magnetic touch electrode on the display substrate surrounds the orthographic projection of the capacitive touch electrode on the display substrate inside the display area.

[0056] In this embodiment, by placing the magnetic touch electrode in the edge area of ​​the display area and making the orthographic projection of the magnetic touch electrode on the display substrate surround the orthographic projection of the capacitive touch electrode on the display substrate inside the display area, the touch accuracy of electromagnetic touch at the edge of the display area is improved without affecting the accuracy of capacitive touch, thus enhancing the edge writing accuracy.

[0057] In a specific example, refer to Figure 1 As shown in the schematic cross-sectional view, the display panel includes a display substrate 10 and a touch layer 11 disposed on the display substrate.

[0058] In this example, the display substrate 10 may include a display substrate, a driving circuit layer, and a light-emitting functional layer stacked together. The light-emitting functional layer includes multiple light-emitting elements (represented by rectangles with different filling patterns) arranged in an array. These multiple light-emitting elements can emit light of different colors under the drive of circuits in the driving circuit layer to display images on the display panel. This disclosure is not intended to limit the type of light-emitting element, such as light-emitting diodes (LEDs), organic light-emitting diodes (OLEDs), quantum dot diodes (QLEDs), mini light-emitting diodes (Mini LEDs), etc.

[0059] Continue to refer to Figure 1As shown, the touch layer 11 can be disposed on the light-emitting side of the display substrate 10 for sensing touch input from the outside. The touch layer 11 may include a first touch sensing layer 111, a second touch sensing layer 113, and an insulating layer 113 disposed between the first touch sensing layer 111 and the second touch sensing layer 112.

[0060] Combination Figure 2 As shown, for example, the touch layer 11 includes: a plurality of first electrodes SR, a plurality of second electrodes ST, a plurality of third electrodes ER, and a plurality of fourth electrodes ET.

[0061] Among them, see Figure 2 As shown, a plurality of first electrodes SR extend along a first direction (Y direction in the figure) and are arranged along a second direction (X direction in the figure); a plurality of second electrodes ST extend along the second direction and are arranged along the first direction; a plurality of third electrodes ER extend along the first direction and are arranged along the second direction; and a fourth electrode ET extends along the second direction and is arranged along the first direction.

[0062] In embodiments of this disclosure, each fourth electrode ET includes at least one sub-electrode connected in parallel. When multiple sub-electrodes are connected in parallel, the sensing effect of each electrode can be increased, thereby improving sensing sensitivity.

[0063] It should be noted that although the first direction is shown as the Y direction and the second direction as the X direction in this example, this disclosure is not limited to this. In practical applications, the first direction can also be the X direction and the second direction can be the Y direction. In addition, the first direction and the second direction are not limited to the perpendicular relationship shown in this example; as long as they intersect, it is within the scope of the embodiments of this disclosure.

[0064] Combination Figure 1 and Figure 2 As shown, the first electrode SR is disposed in the first touch sensing layer 111, the second electrode ST is disposed in the second touch sensing layer 112 and electrically isolated by the insulating layer 113, the third electrode ER is disposed in the first touch sensing layer 111, and the fourth electrode ET is disposed in the second touch sensing layer 112 and electrically isolated by the insulating layer 113. Furthermore, the first electrode SR and the third electrode ER, also disposed in the first touch sensing layer 111, are electrically isolated from each other, and the second electrode ST and the fourth electrode ET, also disposed in the second touch sensing layer 112, are also electrically isolated from each other.

[0065] In this embodiment, the first electrode SR and the second electrode ST are capacitive touch electrodes, and the third electrode ER and the fourth electrode ET are magnetic touch electrodes. In this document, a capacitive touch electrode refers to an electrode that, based on the capacitance characteristics of the human body, changes the capacitance value around the electrode when a finger approaches or touches it, thereby determining the touch position of the finger. A magnetic touch electrode refers to an electrode that, based on the principle of electromagnetic induction, generates a resonant magnetic field through the electrode when touched by an electromagnetic pen, thereby generating an electromagnetic induction signal, which is used to determine the touch position of the electromagnetic pen. The electromagnetic pen can be an active or passive electromagnetic pen. The electromagnetic pen refers to a device that generates a magnetic field at a predetermined resonant frequency, and may include an LC resonant circuit of inductor and capacitor. In the embodiments of this disclosure, the inductor of the electromagnetic pen can be a variable inductor, and the capacitor can be a variable capacitor, but is not limited thereto.

[0066] For example, the first electrode SR can be a transmitting electrode and the second electrode ST can be a receiving electrode. The first electrode SR transmits a sensing signal at a predetermined frequency. When a finger approaches or touches the surface of the display panel, the second electrode ST senses (or reads) the change in capacitance value to determine the touch position of the finger.

[0067] For example, the third electrode ER can sense a first induced current based on the resonant magnetic field of the electromagnetic pen, while the fourth electrode ET can sense a second induced current based on the resonant magnetic field of the electromagnetic pen, thereby determining the magnetic touch position.

[0068] It should be noted that although in this example, the first electrode SR and the third electrode ER are disposed on the same layer, and the second electrode ST and the fourth electrode ET are disposed on the same layer, this disclosure is not limited to this. The first electrode SR and the fourth electrode ET can also be disposed on the same layer. That is, if we assume the first electrode SR is the transmitting electrode and the second electrode ST is the receiving electrode, then any specific transmitting or receiving electrode can be disposed on the same layer as the third electrode ER and the fourth electrode ET, with the overlapping positions connected by perforated bridges. Alternatively, the first electrode SR, the second electrode ST, the third electrode ER, and the fourth electrode ET can all be disposed on the same layer. Furthermore, although this example shows the first touch sensing layer 111 closer to the display substrate 10 than the second touch sensing layer 112, this disclosure is not intended to be limited to this, and will not be elaborated upon here. In addition, the layer structure diagram is only intended to illustrate the film layer relationships and is not intended to limit the patterns of each electrode; it does not correspond one-to-one with the patterns in the diagram.

[0069] Continue to refer to Figure 1As shown, a support plate 12 may also be disposed on the side of the display substrate 10 away from the touch layer 11. Although not shown, a magnetic conductive layer / magnetic shielding layer and a back film may also be disposed between the support plate 12 and the display substrate 10. An encapsulation layer 13 may also be disposed on the side of the display substrate 10 near the touch layer 11. The encapsulation layer 13 can be used to protect the light-emitting elements and circuit structures in the display substrate 10 from contamination by moisture and humidity. A cover plate layer 14 may also be disposed on the side of the touch layer 11 away from the substrate 10. Although not shown, a polarizing plate may also be included between the cover plate layer 14 and the touch layer 11. The cover plate layer 14 may be bonded to the polarizing plate or other film layers below it by an optical adhesive layer. Of course, the film layer structures illustrated here are merely exemplary and are not intended to be limiting.

[0070] In particular, in the embodiments of this disclosure, the edge region of the display area in the touch layer 11 is a magnetic touch electrode, such that the orthographic projection of the magnetic touch electrode on the display substrate surrounds the orthographic projection of the capacitive touch electrode on the display substrate 10 inside the display area.

[0071] Figure 3 for Figure 2 An enlarged view of the actual structure of a portion of region A within a schematic top view. It should be understood that... Figure 2 The top view in the diagram is only a schematic representation of the overall structure, while Figure 3 The two diagrams are actual structural diagrams of the relevant areas, and there is no one-to-one correspondence between them.

[0072] Specifically, the display panel includes a display area and a non-display area surrounding the display area, see reference. Figure 2 As shown, in the touch layer 11, the first electrode SR, the second electrode ST, the third electrode ER, and the fourth electrode ET are all disposed in the display area. In the embodiments of this disclosure, the edge region of the display area in the touch layer 11 is a magnetic touch electrode.

[0073] Continue to refer to Figure 2 As can be seen, the touch layer 11 includes third electrodes ER-1 to ER-m arranged along the X direction, where m represents the total number of third electrodes ER; the touch layer 11 also includes fourth electrodes ET-1 to ET-n arranged along the Y direction, where n represents the total number of fourth electrodes ET. When there is no need to distinguish them, the third electrodes will still be referred to as "ER" and the fourth electrodes will still be referred to as "ET" in the following text.

[0074] Reference Figure 2 As shown, the third electrode ER-1 and the third electrode ER-m are located at... Figure 2 The fourth electrode ET-1 and the fourth electrode ET-n are located in the left and right edge regions of the central display area, respectively. Figure 2The magnetic touch electrodes ER and ET form an enclosed area on the display substrate 10 by projecting their orthogonal patterns onto the upper and lower edges of the central display area. No capacitive touch electrodes are present to the left of the third electrode ER-1 and to the right of the third electrode ER-m, and also not to the lower side of the fourth electrode ET-1 or the upper side of the fourth electrode ET-n.

[0075] Combination Figure 3 As can be seen, in the embodiments of this disclosure, magnetic touch electrodes are disposed in the edge region of the display area, so that the orthographic projection of the magnetic touch electrodes on the display substrate 10 surrounds the orthographic projection of the capacitive touch electrodes on the display substrate 10 within the display area, which is equivalent to the third electrode ER-1, the third electrode ER-m, the fourth electrode ET-1, and the fourth electrode ET-n jointly defining the range of the display area AA.

[0076] It should be noted that, for ease of illustration, in the top view, the display area AA is represented by the range of the magnetic touch electrodes, and the outer perimeter of the range is marked with "NA" to indicate the non-display area.

[0077] By implementing the above settings, the coupling signal strength between the display area edge and the electromagnetic pen is enhanced, significantly improving the electromagnetic touch accuracy of the electromagnetic pen at the edge of display area AA. This avoids poor touch performance in edge areas due to the relatively small pen tip. Furthermore, since the area of ​​a human finger is larger than the touch area of ​​the display panel compared to the electromagnetic pen, the capacitive touch effect is almost unaffected even if capacitive touch electrodes are not provided in display area AA. Therefore, the settings of this embodiment significantly improve the edge touch accuracy of the display panel.

[0078] Optionally, combined Figure 2 and Figure 4 As shown, the non-display area NA includes the opposing first area NA1 and second area NA2, as well as the opposing third area NA3 and fourth area NA4. The display panel also includes a first auxiliary electrode and a second auxiliary electrode. Wherein, Figure 4 In order to be in Figure 2 This is a simplified view based on the top view, with some labels removed. It should be understood that the specific ranges of the first, second, third, and fourth zones are not limiting; they are intended to indicate the relative positional relationships and approximate locations of the first auxiliary electrode, the second auxiliary electrode, and subsequent wiring or traces in the non-display area.

[0079] Specifically, refer to Figure 2 As shown, the first auxiliary electrode includes a first sub-electrode ER-0 and a second sub-electrode ER-m+1. The first sub-electrode ER-0 and the second sub-electrode ER-m+1 extend along a first direction (Y direction in the figure) and are respectively arranged in the first and second regions on both sides of a plurality of third electrodes ER along a second direction (X direction in the figure).

[0080] The second auxiliary electrode includes a third sub-electrode ET-0 and a fourth sub-electrode ET-n+1, ​​which extend along a second direction and are respectively arranged in the third and fourth regions on both sides of a plurality of fourth electrodes ET along a first direction.

[0081] Continue to refer to Figure 2 As shown, the display panel may further include: a first trace EL1 disposed in the aforementioned third area. The first end of the third electrode ER and the first end of the first auxiliary electrode (including the first sub-electrode ER-0 and the second sub-electrode ER-m+1) are electrically connected to the first trace EL1.

[0082] Optionally, the electrode in the third sub-electrode and the fourth sub-electrode located in the third region is disposed on the side of the first trace away from the display area.

[0083] In this specific example, the third sub-electrode ET-0 is located in the third area, and the third sub-electrode ET-0 is located on the side of the first trace EL1 away from the display area AA.

[0084] The first trace EL1, which serves as a connecting line, is relatively close to the display area AA. When the third sub-electrode ET-0 is placed around the first trace EL1, the coil surrounding the second auxiliary electrode can be expanded as much as possible, thereby increasing the range of electromagnetic touch positioning and improving the accuracy of electromagnetic touch sensing.

[0085] Continue to refer to Figure 2 and Figure 4 As shown, the display panel may further include: a second trace EL2 disposed in the first area NA1, and the first terminal of the fourth electrode ET and the first terminal of the second auxiliary electrode (including the third sub-electrode ET-0 and the fourth sub-electrode ET-n+1) are electrically connected to the second trace EL2. It should be understood that, although in Figure 2 In the example, the first area is located to the left of the display area AA in the figure, but it is not limited to this. When the first area is located to the right of the display area AA, it is also within the scope of protection of this disclosure.

[0086] Optionally, the electrode in the first region of the first sub-electrode and the second sub-electrode is disposed on the side of the second trace EL2 away from the display area.

[0087] In this specific example, the first sub-electrode ER-0 is located in the first area, and the first sub-electrode ER-0 is located on the side of the second trace EL2 away from the display area AA.

[0088] The second trace EL2, which serves as a connecting line, is relatively close to the display area AA. When the first sub-electrode ER-0 is placed around the second trace EL2, the coil surrounding the first auxiliary electrode can be expanded as much as possible, thereby increasing the range of electromagnetic touch positioning and improving the accuracy of electromagnetic touch sensing.

[0089] This setup utilizes the first trace EL1 to form a comb-shaped sensing coil extending along the Y direction for electromagnetic sensing of the electromagnetic pen's touch. Importantly, by adding a first sub-electrode ER-0 and a second sub-electrode ER-m+1 to the display area NA, the layout range of the sensing coil is extended, thereby extending the sensing coil beyond the display area AA into the non-display area. This allows the smaller pen tip of the electromagnetic pen to still be detected when it touches the vicinity of the edge of the display area AA, further improving the accuracy of electromagnetic touch writing at the edge.

[0090] Optionally, the resistance of each of the first sub-electrode ER-0 and the second sub-electrode ER-m+1 is equal to the resistance of the third electrode ER; the resistance of each of the third sub-electrode ET-0 and the fourth sub-electrode ET-n+1 is equal to the resistance of the fourth electrode ET.

[0091] This setting enables each of the first sub-electrode ER-0 and the second sub-electrode ER-m+1 in the first auxiliary electrode located in the non-display area NA to be aligned with the channel impedance in the display area AA, thereby improving signal uniformity.

[0092] It should be noted that in the embodiments of this disclosure, impedance uniformity is not intended to limit the pattern structures to being exactly the same, for example... Figure 3 The third electrode ER in the display area AA is grid-shaped, while the first sub-electrode ER-0 and the second sub-electrode ER-m+1 in the non-display area NA can be non-grid-shaped electrodes with the same impedance as the third electrode ER. This will not be elaborated on in this article.

[0093] Optionally, when the width of each of the first sub-electrode ER-0 and the second sub-electrode ER-m+1 is greater than or equal to 60 μm, the width of each of the third sub-electrode ET-0 and the fourth sub-electrode ET-n+1 is greater than or equal to 60 μm.

[0094] When this setting is met, it is relatively easy to achieve resistance matching between the third electrode ER in the display area AA and the first sub-electrode ER-0 and the second sub-electrode ER-m+1 in the first auxiliary electrode in the non-display area NA, as well as resistance matching between the fourth electrode ET in the display area AA and the third sub-electrode ET-0 and the fourth sub-electrode ET-n+1 in the second auxiliary electrode in the non-display area NA.

[0095] Optionally, further refer to Figure 2 As shown, the non-display area NA in the display panel is also provided with trace lines that are electrically connected to the first electrode SR, second electrode ST, third electrode ER, and fourth electrode ET in the display area AA, as well as the first sub-electrode ER-0, second sub-electrode ER-m+1, third sub-electrode ET-0, and fourth sub-electrode ET-n+1 in the non-display area NA.

[0096] Specifically, the non-display area NA of the display panel also includes a pad area FA. The fourth area of ​​the non-display area is located between the display area AA and the pad area FA. That is, the pad area FA is located on the side of the fourth area away from the display area AA.

[0097] Reference Figure 2 As shown, the above wiring includes first wirings that correspond one-to-one with the first sub-electrode ER-0, the second sub-electrode ER-m+1, the third sub-electrode ET-0, and the fourth sub-electrode ET-n+1. The pad area FA includes a plurality of first pads that correspond one-to-one with the first wirings. For the sake of simplicity, the labels of the first pads are not shown.

[0098] Specifically, the first end of the first wiring EL3-0 is electrically connected to the first sub-electrode ER-0, and the other end is electrically connected to the corresponding first pad; the first end of the first wiring EL3-m+1 is electrically connected to the second sub-electrode ER-m+1, and the other end is electrically connected to the first pad; the first end of the first wiring EL4-0 is electrically connected to the third sub-electrode ET-0, and the other end is electrically connected to the first pad; the first end of the first wiring EL4-n+1 is electrically connected to the fourth sub-electrode ET-n+1, ​​and the other end is electrically connected to the first pad.

[0099] Furthermore, the display area AA includes m first electrodes SR and n second electrodes ST, and the non-display area NA includes wiring SL1-1, SL1-2, ..., SL1-m that are electrically connected to the m first electrodes SR in a one-to-one correspondence, and wiring SL2-1, SL2-2, ..., SL2-n that are electrically connected to the n second electrodes ST in a one-to-one correspondence. In the following text, when no distinction is needed, the symbol "SL1" indicates the wiring electrically connected to the second electrodes SR, and the symbol "SL2" indicates the wiring electrically connected to the second electrodes ST.

[0100] In addition, the display area AA includes m third electrodes ER and n fourth electrodes ET, and the non-display area NA includes wiring EL3-1, EL3-2, ..., EL3-m that are electrically connected to the m third electrodes ER-1 to ER-m in a one-to-one correspondence, and wiring EL4-1, EL4-2, ..., EL4-n that are electrically connected to the n fourth electrodes ET-1 to ET-n in a one-to-one correspondence.

[0101] In addition, refer to Figure 2 and Figure 4As shown, the non-display area NA also includes at least one wiring GND. In this example, one wiring GND is located in the first area NA1, the second area NA2, and the third area NA3 and electrically connected to two pads in the pad area FA, surrounding the display area AA. Another wiring GND is located in the fourth area NA4 and electrically connected to two pads in the pad area FA. The wiring GND can provide ground potential to the display panel and can be used for electrostatic discharge protection. Additionally, refer to... Figure 3 As shown, the non-display area AA also includes multiple redundant wirings Dml to balance impedance coupling and improve wiring uniformity, which will not be elaborated upon in this article.

[0102] Figure 5 The middle shows with Figure 2 The schematic top view shown is a diagram of the actual structure of region B. It should be understood that... Figure 2 The top view in the diagram is only a schematic representation of the overall structure, while Figure 5 The two diagrams are actual structural diagrams of the relevant areas, and there is no one-to-one correspondence between them.

[0103] from Figure 5 As can be seen, considering space constraints, the widths of wirings EL4-1 to EL4-n corresponding to the fourth electrode ET in the non-display area are typically smaller. However, the fourth sub-electrode ET-n+1, ​​in order to achieve resistance matching with the fourth electrode ET within the display area AA, is usually wider. Therefore, to ensure that the resistance of the first wiring EL4-n+1 matches the resistances of wirings EL4-1 to EL4-n, the width of the first wiring EL4-n+1 is smaller than the width of the fourth sub-electrode ET-n+1. Similarly, referring to... Figure 5 As shown, the second sub-electrode ER-m+1 is wider in order to form a resistance match with the third electrode ER in the display area AA. In order to match the resistance of the first wiring EL3-m+1 with the resistance of wirings EL3-1, EL3-2, ..., EL3-m, the width of the first wiring EL3-m+1 is smaller than the width of the second sub-electrode ER-m+1.

[0104] Similarly, the width of the first wiring EL3-0 is smaller than the width of the first sub-electrode ER-0, and the width of the first wiring EL4-0 is smaller than the width of the third sub-electrode ET-0.

[0105] The above settings enable the wiring electrically connected to the first and second auxiliary electrodes to form a resistance match with the wiring electrically connected to the corresponding third electrode ER and fourth electrode ET, thereby improving signal uniformity.

[0106] Reference Figure 2As shown, the fourth sub-electrode ET-n+1 is located in the fourth region between the pad area FA and the display area AA, and the first wiring EL4-n+1 is also located in the fourth region. The plurality of first pads also include first sub-pads. One end of the first wiring EL4-n+1 is electrically connected to the end of the fourth sub-electrode ET-n+1 that is not electrically connected to the second wiring EL2, and the other end of the first wiring EL4-n+1 is electrically connected to the first sub-pad.

[0107] Optionally, the length of the fourth sub-electrode EL4-n+1 is equal to the length of the fourth electrode ET, and the extension direction of the connection area between the first wiring EL4-n+1 electrically connected to the fourth sub-electrode EL4-n+1 and the fourth sub-electrode EL4-n+1 intersects with the second direction X. In other words, the connection area between the first wiring EL4-n+1 and the fourth sub-electrode EL4-n+1 is designed with a bend.

[0108] This setting ensures that the equivalent length of the fourth sub-electrode ET-n+1 is the same as that of the fourth electrode ET, thereby guaranteeing the electromagnetic touch accuracy at that location.

[0109] In some alternative embodiments, refer to Figure 6 As shown, the difference between the display panel structure of this embodiment and the embodiment described above is that the second trace in the display panel is divided into two parts. It should be noted that, although... Figure 6 The locations of Zone 1, Zone 2, Zone 3, and Zone 4 are not specifically marked. Figure 4 Consistent.

[0110] Specifically, refer to Figure 6 As shown, the second routing includes the third routing section EL2-1 and the fourth routing section EL2-2 located in the first area.

[0111] The third wiring section EL2-1 electrically connects the first end of a portion of the multiple fourth electrodes ET and the first end of the third sub-electrode ET-0, while the fourth wiring section EL2-2 electrically connects the first end of another portion of the multiple fourth electrodes ET and the first end of the fourth sub-electrode ET-n+1.

[0112] Specifically, in the example, the fourth electrode ET in the upper half of the diagram is electrically connected to the third trace EL2-1, and the fourth electrode ET in the lower half is electrically connected to the fourth trace EL2-2.

[0113] With this configuration, the fourth electrode ET and the third sub-electrode ET-0 in the upper half and the fourth electrode ET and the fourth sub-electrode ET-n+1 in the lower half can be configured as independently scanning electromagnetic induction coils, thereby allowing them to independently provide scanning signals and operate independently, thus increasing the number of channels that can operate simultaneously.

[0114] It should be noted that other structural features of the display panel in this embodiment are similar to those in the embodiments described above. To demonstrate this similarity, [details omitted]. Figure 6 The main feature parts are represented by similar labels. The wiring connected to the first electrode SR is marked as "SL1", the wiring connected to the second electrode ST is marked as "SL2", the first wiring connected to the third electrode ER, the first sub-electrode ER-0, and the third sub-electrode ET-m+1 is marked as "EL3", and the first wiring connected to the fourth electrode ET, the third sub-electrode ET-0, and the fourth sub-electrode ET-n+1 is marked as "EL4". These will not be described in detail here.

[0115] In some alternative embodiments, refer to Figure 7 As shown, the difference between the structure of the display panel in this embodiment and the embodiment described above is that the first and second traces in the display panel are both divided into two parts.

[0116] Specifically, refer to Figure 7 As shown, the first routing includes a first routing section EL1-1 and a second routing section EL1-2 located in the third zone. It should be noted that, although... Figure 7 The locations of Zone 1, Zone 2, Zone 3, and Zone 4 are not specifically marked. Figure 4 Consistent.

[0117] The first trace portion EL1-1 electrically connects the first end of a portion of the multiple third electrodes ER and the first end of the first sub-electrode ER-0, and the second trace portion EL1-2 electrically connects the first end of another portion of the multiple third electrodes ER and the first end of the second sub-electrode ER-m+1.

[0118] Optionally, the electrode in the third sub-electrode and the fourth sub-electrode located in the third region is disposed on the side of the first trace away from the display area.

[0119] Specifically in this example, the third sub-electrode ET-0 is located on the side of the first trace EL1 away from the display area AA. That is, the third sub-electrode ET-0 is located on the side of the first trace EL1-1 away from the display area AA and on the side of the second trace EL1-2 away from the display area AA.

[0120] This setup maximizes the area around the coil of the second auxiliary electrode, thereby increasing the range of electromagnetic touch positioning and improving the accuracy of electromagnetic touch sensing.

[0121] Additionally, in this example, the second routing includes a third routing section EL2-1 and a fourth routing section EL2-2 located in the first area.

[0122] The third wiring section EL2-1 electrically connects the first end of a portion of the multiple fourth electrodes ET and the first end of the third sub-electrode ET-0, while the fourth wiring section EL2-2 electrically connects the first end of another portion of the multiple fourth electrodes ET and the first end of the fourth sub-electrode ET-n+1.

[0123] Specifically, in the example, the fourth electrode ET in the upper half of the diagram is electrically connected to the third trace EL2-1, and the fourth electrode ET in the lower half is electrically connected to the fourth trace EL2-2.

[0124] Optionally, the electrode in the first region of the first sub-electrode and the second sub-electrode is disposed on the side of the second trace EL2 away from the display area.

[0125] Specifically in this example, the first sub-electrode ER-0 is located in the first area. The first sub-electrode ER-0 is located on the side of the second trace EL2 away from the display area AA. That is, the third trace portion EL2-1 is located on the side of the second trace EL2 away from the display area AA, and the fourth trace portion EL2-2 is located on the side of the second trace EL2 away from the display area AA.

[0126] By placing the first sub-electrode ER-0 around the second trace EL2, the coil surrounding the first auxiliary electrode can be expanded as much as possible, thereby increasing the range of electromagnetic touch positioning and improving the accuracy of electromagnetic touch sensing.

[0127] With the above settings, the third electrode ER and the first sub-electrode ER-0 in the left half and the third electrode ER and the second sub-electrode ER-m+1 in the lower half can be configured as independently scanning electromagnetic induction coils, thus allowing independent scanning signals to be given and independent operation; at the same time, the fourth electrode ET and the third sub-electrode ET-0 in the upper half and the fourth electrode ET and the fourth sub-electrode ET-n+1 in the lower half can be configured as independently scanning electromagnetic induction coils, thus allowing independent scanning signals to be given and independent operation, significantly increasing the number of channels operating simultaneously.

[0128] It should be noted that other structural features of the display panel in this embodiment are similar to those in the embodiments described above. To demonstrate this similarity, [details omitted]. Figure 6 The main feature parts are represented by similar labels. The wiring connected to the first electrode SR is marked as "SL1", the wiring connected to the second electrode ST is marked as "SL2", the first wiring connected to the third electrode ER, the first sub-electrode ER-0, and the third sub-electrode ER-m+1 is marked as "EL3", and the first wiring connected to the fourth electrode ET, the third sub-electrode ET-0, and the fourth sub-electrode ET-n+1 is marked as "EL4". These will not be described in detail here.

[0129] In some alternative embodiments, refer to Figure 8 As shown, in this embodiment, the display panel divides the first and second traces into two separate trace sections to independently form loops for the line weights in the display panel, respectively. Figure 7 The embodiment changed the positions of two trace portions in the second trace.

[0130] Specifically, refer to Figure 8 As shown, the second trace includes a third trace portion EL2-1 located in the first area and a fourth trace portion EL2-2 located in the second area. It should be noted that, although... Figure 8 The locations of Zone 1, Zone 2, Zone 3, and Zone 4 are not specifically marked. Figure 4 Consistent.

[0131] The third trace EL2-1 in the first region electrically connects the first end of a portion of the multiple fourth electrodes ET to the first end of the third sub-electrode ET-0, and the fourth trace EL2-2 electrically connects the second end of another portion of the multiple fourth electrodes ET to the second end of the fourth sub-electrode ET-n+1. The first end refers to the end located on the left side of the diagram, and the second end refers to the end located on the right side of the diagram.

[0132] Specifically, in the example, the fourth electrode ET in the upper half of the figure is electrically connected to the third sub-electrode ET-0 through the third trace portion EL2-1 located in the first region, and the fourth electrode ET in the lower half is electrically connected to the fourth sub-electrode ET-n+1 through the fourth trace portion EL2-2 located in the second region.

[0133] It should be noted that because the third trace section EL2-1 and the fourth trace section EL2-2 are located on different sides of the display area AA, the wiring for the fourth electrode ET, which connects the upper and lower parts, is also led out from different sides, for example... Figure 8 As shown, wiring EL4-2, which is electrically connected to the fourth electrode ET-2, is led out from the right side of the figure and arranged in the second region, while wiring EL4-n, which is electrically connected to the fourth electrode ET-n, is led out from the right side of the figure and arranged in the first region.

[0134] It should also be noted that the electrode located in the first region of the first and second sub-electrodes can be positioned on the side of the second trace EL2 (in this example, the third trace portion EL2-1) away from the display area, and the electrode located in the second region of the first and second sub-electrodes can be positioned on the side of the second trace EL2 (in this example, the fourth trace portion EL2-2) away from the display area. The electrode located in the third region of the third and fourth sub-electrodes is positioned on the side of the first traces EL1-1 and EL1-2 away from the display area.

[0135] This setup maximizes the area around the coil of the first auxiliary electrode, thereby increasing the range of electromagnetic touch positioning and improving the accuracy of electromagnetic touch sensing.

[0136] With the above settings, the third electrode ER and the first sub-electrode ER-0 in the left half and the third electrode ER and the second sub-electrode ER-m+1 in the lower half can be configured as independently scanning electromagnetic induction coils, thus allowing them to independently provide scanning signals and operate independently. At the same time, the fourth electrode ET and the third sub-electrode ET-0 in the upper half and the fourth electrode ET and the fourth sub-electrode ET-n+1 in the lower half can be configured as independently scanning electromagnetic induction coils, thus allowing them to independently provide scanning signals and operate independently, significantly increasing the number of channels that can operate simultaneously.

[0137] It should be noted that, although Figure 8 The diagram shows the first region on the left and the second region on the right, but this disclosure is not limited thereto. The embodiments of this disclosure also apply when the positions of the first and second regions are interchanged.

[0138] In some alternative embodiments, while dividing the first and second traces into two parts respectively, the electrode sequence connected to the third trace portion EL2-1 and the fourth trace portion EL2-2 can be adjusted.

[0139] Specifically, refer to Figure 9 As shown, the 2ath fourth electrode ET-2a of the plurality of fourth electrodes ET is electrically connected to the third routing section EL2-1, and the 2a-1th fourth electrode ET-2a-1 of the plurality of fourth electrodes ET is electrically connected to the fourth routing section EL2-2, where 'a' is an integer greater than or equal to 1. Simultaneously, the 2ath third electrode ER-2a of the plurality of third electrodes ER is electrically connected to the first routing section EL1-1, and the 2a-1th third electrode ER-2a-1 of the plurality of third electrodes ET is electrically connected to the second routing section EL1-2.

[0140] In other words, the odd-numbered fourth electrodes ET and the even-numbered fourth electrodes ET are electrically connected respectively, so that they can be cross-shorted together and work independently. This increases the number of independently working channels and allows for independent signal reception even when channels are cross-connected.

[0141] Furthermore, it should be specifically pointed out that although the figure shows the first trace including the first trace portion EL1-1 and the second trace portion EL1-2 disposed in the third region, and the second trace including the third trace portion EL2-1 and the fourth trace portion EL2-2 disposed in the first region, this disclosure is not limited thereto. In some other embodiments, the second trace can be a single unit, but the first trace is configured as two parts, so that only the even-numbered third electrode ER-2a and the first sub-electrode ER-0, and the odd-numbered third electrode ER-2a-1 and the second sub-electrode ER-m+1 constitute independently scanning electromagnetic induction coils, thereby allowing independent scanning signals to be given and independent operation, which can also increase the number of independently operating coils. Of course, the first trace can also be a single unit, but the second trace can be configured as two parts respectively connected to the odd and even electrodes, which will not be elaborated here.

[0142] It should also be noted that the electrode in the first region of the first and second sub-electrodes can be located on the side of the second trace EL2 away from the display area. The electrode in the third region of the third and fourth sub-electrodes is located on the side of the first trace EL1 away from the display area.

[0143] This setup maximizes the area around the coil of the first auxiliary electrode, thereby increasing the range of electromagnetic touch positioning and improving the accuracy of electromagnetic touch sensing.

[0144] Based on the same inventive concept, embodiments of this disclosure also provide a display device, wherein the display substrate described above is implemented.

[0145] Since the display panel included in the display device provided in this embodiment is the same as the display panel provided in the above embodiments, the usage method provided in this embodiment is also applicable to the previous embodiments, and will not be described in detail in this embodiment.

[0146] In this embodiment, the display device can be any display product or component with capacitive and electromagnetic touch functions, such as a mobile phone, tablet computer, television, monitor, laptop computer, in-vehicle display, digital photo frame, or navigator. By loading the above display substrate, the display device has good product touch accuracy.

[0147] Obviously, the above embodiments of this disclosure are merely examples for clearly illustrating this disclosure, and are not intended to limit the implementation of this disclosure. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all implementation methods here. Any obvious variations or modifications derived from the technical solutions of this disclosure are still within the protection scope of this disclosure.

Claims

1. A display panel, characterized in that, The display area includes a display area and a non-display area surrounding the display area, and further includes: a touch layer disposed on the display substrate, the touch layer comprising: Multiple first electrodes extend along a first direction and are arranged along a second direction, wherein the first direction intersects the second direction; Multiple second electrodes extend along the second direction and are arranged along the first direction; A plurality of third electrodes, extending along the first direction and arranged along the second direction; and Multiple fourth electrodes, extending along the second direction and arranged along the first direction, include at least one sub-electrode connected in parallel. Wherein, the first electrode and the second electrode are capacitive touch electrodes, and the third electrode and the fourth electrode are magnetic touch electrodes. The edge region of the display area in the touch layer is the magnetic touch electrode, such that the orthographic projection of the magnetic touch electrode on the display substrate surrounds the orthographic projection of the capacitive touch electrode on the display substrate inside the display area.

2. The display panel according to claim 1, characterized in that, The non-display area includes opposing first and second areas, as well as opposing third and fourth areas. The display panel also includes: The first auxiliary electrode includes a first sub-electrode and a second sub-electrode, the first sub-electrode and the second sub-electrode extending along the first direction and respectively arranged along the second direction in the first region and the second region on both sides of the plurality of third electrodes. The second auxiliary electrode includes a third sub-electrode and a fourth sub-electrode, the third sub-electrode and the fourth sub-electrode extending along the second direction and respectively arranged in the third region and the fourth region on both sides of the plurality of fourth electrodes along the first direction.

3. The display panel according to claim 2, characterized in that, Also includes: A first trace is disposed in the third region, and the first end of the third electrode and the first end of the first auxiliary electrode are electrically connected to the first trace.

4. The display panel according to claim 2, characterized in that, Also includes: First routing, The first trace includes a first trace portion and a second trace portion disposed in the third zone. The first trace electrically connects a portion of the first ends of the plurality of third electrodes and the first end of the first sub-electrode. The second wiring portion electrically connects the first end of another portion of the plurality of third electrodes and the first end of the second sub-electrode.

5. The display panel according to claim 3 or 4, characterized in that, The sub-electrode located in the third region of the third sub-electrode and the fourth sub-electrode is disposed on the side of the first trace away from the display area.

6. The display panel according to claim 3, characterized in that, Also includes: The second trace is disposed in the first region, and the first end of the fourth electrode and the first end of the second auxiliary electrode are electrically connected to the second trace.

7. The display panel according to claim 2, characterized in that, Also includes: The second routing includes a third routing portion and a fourth routing portion disposed in the first area. The third wiring portion electrically connects the first end of a portion of the plurality of fourth electrodes and the first end of the third sub-electrode. The fourth wiring portion electrically connects the first end of another portion of the plurality of fourth electrodes and the first end of the fourth sub-electrode.

8. The display panel according to claim 2, characterized in that, Also includes: The second routing includes a third routing portion disposed in the first area and a fourth routing portion disposed in the second area. The third wiring portion electrically connects the first end of a portion of the plurality of fourth electrodes and the first end of the third sub-electrode. The fourth wiring portion electrically connects the second end of another portion of the plurality of fourth electrodes and the second end of the fourth sub-electrode.

9. The display panel according to claim 7 or 8, characterized in that, The 2a-1th fourth electrode among the plurality of fourth electrodes is electrically connected to the third trace portion, and the 2ath fourth electrode among the plurality of fourth electrodes is electrically connected to the fourth trace portion, where a is an integer greater than or equal to 1.

10. The display panel according to claim 2, characterized in that, The non-display area further includes: a plurality of first wirings, and a pad area disposed on the side of the fourth area away from the display area. Multiple first wirings are configured one-to-one with the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode. The pad area includes first pads configured one-to-one with the first wirings. One end of the first wiring is electrically connected to one of the corresponding first sub-electrode, second sub-electrode, third sub-electrode, and fourth sub-electrode, and the other end is electrically connected to the first pad. The width of the first wiring is smaller than the width of the first sub-electrode, the second sub-electrode, the third sub-electrode, and the fourth sub-electrode electrically connected to it.

11. The display panel according to claim 2, characterized in that, The width of each of the first and second sub-electrodes is greater than or equal to 60 μm, and the width of each of the third and fourth sub-electrodes is greater than or equal to 60 μm, and / or The resistance of each of the first and second sub-electrodes is equal to the resistance of the third electrode, and the resistance of each of the third and fourth sub-electrodes is equal to the resistance of the fourth electrode.

12. The display panel according to claim 10, characterized in that, The plurality of first pads include first sub-pads. The length of the fourth sub-electrode is equal to the length of the fourth electrode. The first wiring electrically connected to the fourth sub-electrode is disposed in the fourth region, and the extension direction of the connection region where the first wiring is electrically connected to the fourth sub-electrode intersects with the second direction.

13. A display device, characterized in that, The display panel includes any one of claims 1-12.

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