Display panel, display apparatus, and terminal device

Abstract

A display panel, a display apparatus, and a terminal device, relating to the technical field of display. In the display panel, light-emitting devices are distributed on a driving backplane in an array; a packaging layer covers the light-emitting devices; a touch function layer is arranged on the surface of the packaging layer distant from the driving backplane, and comprises a plurality of conductive layers; the touch function layer further comprises a plurality of mutually independent touch electrodes at least partially located in a display area, first induction coils and second induction coils which extend in different directions and are insulated from each other, a touch lead, a first induction lead, and a second induction lead; the touch lead is connected to the touch electrodes; the first induction lead is connected to the first induction coils, and the second induction lead is connected to the second induction coils; the touch electrodes, the induction coils, the touch lead, and the induction leads are distributed on the plurality of conductive layers; the first induction coils are arranged on a same layer, the second induction coils are arranged on a same layer, and the first induction lead and the second induction lead are located on different conductive layers; and the touch electrodes and the induction coils are at most partially overlapped.

Description

Display panel, display device and terminal equipment Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display panel, a display device, and a terminal device. Background Art

[0002] Currently, display panels that use independent light-emitting devices to achieve direct display are widely used. The light-emitting devices may be organic light-emitting diodes (OLEDs), etc. Existing display panels with touch functions have a single touch function.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0004] Summary of the Invention

[0005] The present disclosure provides a display panel, a display device, and a terminal device.

[0006] According to one aspect of the present disclosure, a display panel is provided, comprising a display area and a peripheral area outside the display area, wherein the peripheral area includes a fan-out area; the display panel comprises:

[0007] Driver backplane;

[0008] A plurality of light-emitting devices are distributed in an array on the driving backplane and located in the display area;

[0009] an encapsulation layer, covering each of the light-emitting devices;

[0010] A touch function layer is provided on a surface of the packaging layer away from the driving backplane, and includes multiple conductive layers distributed in a direction away from the driving backplane; the touch function layer also includes multiple independent touch electrodes and multiple induction coils at least partially located in the display area, and touch leads and induction leads extending to the fan-out area; the touch leads are connected to the touch electrodes; the induction coils include multiple first induction coils and multiple second induction coils; the first induction coils and the second induction coils extend in different directions and are insulated; the induction leads include first induction leads and second induction leads; the first induction leads are connected to the first induction coils, and the second induction leads are connected to the second induction coils;

[0011] The touch electrodes, the sensing coils, the touch leads, and the sensing leads are distributed on a plurality of the conductive layers; the first sensing coils are disposed on the same layer, the second sensing coils are disposed on the same layer, and the first sensing leads and the second sensing leads are located on different conductive layers; the touch electrodes and the sensing coils overlap at most.

[0012] In an exemplary embodiment of the present disclosure, the conductive layer includes a first conductive layer and a second conductive layer sequentially distributed in a direction away from the driving back plate;

[0013] The touch electrodes are arranged in the same layer and are distributed in an array along the row direction and the column direction; the first induction coils extend along the row direction, and the second induction coils extend along the column direction;

[0014] The touch electrode is located within a range surrounded by the first induction coil or the second induction coil.

[0015] In an exemplary embodiment of the present disclosure, the induction coil has a disconnected gap, and the induction lead is connected to both ends of the gap;

[0016] The gap of the first induction coil faces one side of the display area along the row direction, and the gaps of two adjacent first induction coils face opposite directions. The first induction leads connecting the two adjacent first induction coils are located on both sides of the display area.

[0017] The gap of the second induction coil faces the fan-out area.

[0018] In an exemplary embodiment of the present disclosure, the induction coil has a disconnected gap; the gap of at least part of the induction coil located in different layers faces the fan-out area; the induction lead is connected to both ends of the gap, and at least part of the induction lead extends from the display area to the fan-out area.

[0019] In an exemplary embodiment of the present disclosure, the touch electrodes and the touch leads are located in different layers; a touch lead overlaps with a column of touch electrodes in which the touch electrode connected thereto is located.

[0020] In an exemplary embodiment of the present disclosure, the touch electrodes and the touch leads are arranged in the same layer; a touch lead and a column of touch electrodes in which the touch electrode connected thereto is located do not overlap.

[0021] In an exemplary embodiment of the present disclosure, the first sensing coil and the first sensing lead are located in the first conductive layer; the touch electrodes, the touch leads, the second sensing coil and the second sensing lead are located in the second conductive layer;

[0022] A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

[0023] In an exemplary embodiment of the present disclosure, a distance between two adjacent rows of touch electrodes is smaller than a distance between two adjacent columns of touch electrodes; and a row of touch electrodes overlaps with one of the first induction coils.

[0024] In an exemplary embodiment of the present disclosure, the second sensing coil and the second sensing lead are located in the first conductive layer; the touch electrode is located in the second conductive layer; at least a portion of at least one of the touch lead, the first sensing coil, and the first sensing lead is located in the second conductive layer;

[0025] A row of touch electrodes is located within a range surrounded by the first induction coil in the display area;

[0026] A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

[0027] In an exemplary embodiment of the present disclosure, at least part of the first induction coil includes a plurality of induction conductive segments located on the second conductive layer and an induction connecting segment located on the first conductive layer; the induction conductive segments are connected by the induction connecting segments; the touch leads overlap with the induction connecting segments and are spaced apart from the induction conductive segments;

[0028] At least part of the first sensing leads includes a plurality of sensing lead segments located in the second conductive layer and lead connecting segments located in the first conductive layer; the sensing lead segments are connected by the lead connecting segments; the touch leads overlap with the lead connecting segments and are spaced apart from the sensing lead segments.

[0029] In an exemplary embodiment of the present disclosure, the touch lead, the second sensing coil, and the second sensing lead are located in the first conductive layer; the touch electrode, the first sensing coil, and the first sensing lead are located in the second conductive layer;

[0030] A row of touch electrodes is located within a range surrounded by the first induction coil in the display area;

[0031] A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

[0032] In an exemplary embodiment of the present disclosure, at least a portion of at least one of the touch lead, the first sensing coil, and the first sensing lead is located in the first conductive layer; the touch electrode, the second sensing coil, and the second sensing lead are located in the second conductive layer;

[0033] A row of touch electrodes is located within a range surrounded by the first induction coil in the display area;

[0034] A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

[0035] In an exemplary embodiment of the present disclosure, at least a portion of the first induction coil includes a plurality of induction conductive segments located in the first conductive layer and an induction connecting segment located in the second conductive layer; the induction conductive segments are connected by the induction connecting segments; and the touch leads overlap with the induction connecting segments and are spaced apart from the induction conductive segments.

[0036] In an exemplary embodiment of the present disclosure, the touch leads connected to the touch electrodes in the same column are spaced apart along the row direction and overlap with the touch electrodes connected thereto.

[0037] In an exemplary embodiment of the present disclosure, at least a portion of the induction coil overlaps with at least a portion of the touch electrode;

[0038] The touch electrode overlapping the induction coil is provided with a through hole, and the induction coil overlaps the through hole.

[0039] In an exemplary embodiment of the present disclosure, the boundary of the orthographic projection of the through hole on the driving backplane is elliptical; or

[0040] The boundary of the orthographic projection of the through hole on the driving backplane includes two arc segments and a straight line segment connecting the two arc segments; the straight line segment overlaps the induction coil, and the extension direction of the straight line segment is perpendicular to the extension direction of the induction coil overlapping with it.

[0041] In an exemplary embodiment of the present disclosure, the induction coil extends along a specified direction, and the specified direction is the row direction or the column direction;

[0042] The touch electrode is provided with a plurality of through holes spaced apart along the designated direction, and the induction coil overlaps with each of the through holes at the same time; and a dimension of the through hole perpendicular to the designated direction is larger than a line width of the induction coil.

[0043] In an exemplary embodiment of the present disclosure, the touch electrode is provided with a break connecting two adjacent through-holes in the row direction; and / or the touch electrode is provided with a break connecting the outermost through-hole in a row of through-holes;

[0044] The induction coil overlaps with the fracture.

[0045] In an exemplary embodiment of the present disclosure, a dummy electrode is provided in the through hole and is disposed in the same layer as the touch electrode, and the dummy electrode is spaced apart from the touch electrode.

[0046] In an exemplary embodiment of the present disclosure, the boundary of the touch electrode is polygonal; part of the touch electrode is located within a range surrounded by the induction coil, and the touch electrode has a concave area near the boundary of the induction coil.

[0047] In an exemplary embodiment of the present disclosure, the boundary of the orthographic projection of the recessed area on the driving backplate is arc-shaped;

[0048] Boundaries of the orthographic projections of two adjacent recessed areas on the driving backplane intersect.

[0049] According to one aspect of the present disclosure, a display device is provided, comprising any one of the display panels described above.

[0050] According to one aspect of the present disclosure, a terminal device is provided, including:

[0051] The display device according to any one of the above;

[0052] An input device for transmitting electromagnetic signals.

[0053] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0055] FIG1 is a schematic diagram of an embodiment of a terminal device disclosed herein.

[0056] FIG2 is a schematic top view of an embodiment of the display device disclosed herein.

[0057] FIG3 is a schematic diagram of partitions of an embodiment of a display panel disclosed herein.

[0058] FIG4 is a schematic top view of a first embodiment of the display panel disclosed herein.

[0059] FIG5 is a schematic cross-sectional view of a first embodiment of a display panel according to the present disclosure.

[0060] FIG6 is a cross-sectional view taken along line AA in FIG4 .

[0061] FIG7 is a BB cross-sectional view of FIG4 .

[0062] FIG8 is a CC cross-sectional view of FIG4 .

[0063] FIG9 is a DD cross-sectional view of FIG4 .

[0064] FIG10 is a cross-sectional view taken along line EE in FIG4 .

[0065] FIG11 is a cross-sectional view taken along line FF of FIG4 .

[0066] FIG12 is a schematic top view of a second embodiment of the display panel disclosed herein.

[0067] FIG13 is a schematic cross-sectional view of a second embodiment of the display panel disclosed herein.

[0068] FIG14 is a cross-sectional view taken along line AA in FIG12 .

[0069] FIG15 is a cross-sectional view taken along line BB in FIG12 .

[0070] FIG16 is a cross-sectional view taken along line CC in FIG12 .

[0071] FIG17 is a DD cross-sectional view of FIG12.

[0072] FIG18 is a cross-sectional view taken along line EE in FIG12 .

[0073] FIG19 is a sectional view taken along line FF of FIG12 .

[0074] FIG20 is a cross-sectional view taken along line GG in FIG12 .

[0075] FIG21 is a schematic top view of a third embodiment of the display panel disclosed herein.

[0076] FIG22 is a schematic cross-sectional view of a third embodiment of the display panel disclosed herein.

[0077] FIG23 is a cross-sectional view taken along line AA of FIG21 .

[0078] FIG24 is a cross-sectional view taken along line BB in FIG21 .

[0079] FIG25 is a CC cross-sectional view of FIG21.

[0080] FIG26 is a DD cross-sectional view of FIG21.

[0081] FIG27 is a cross-sectional view taken along line EE of FIG21 .

[0082] FIG28 is a schematic top view of a fourth embodiment of the display panel disclosed herein.

[0083] FIG29 is a schematic cross-sectional view of a fourth embodiment of the display panel disclosed herein.

[0084] FIG30 is a cross-sectional view taken along line AA of FIG28 .

[0085] FIG31 is a BB cross-sectional view of FIG28.

[0086] FIG32 is a CC cross-sectional view of FIG28.

[0087] FIG33 is a DD cross-sectional view of FIG28.

[0088] FIG34 is a cross-sectional view taken along line EE of FIG28 .

[0089] FIG35 is a partially enlarged view of an embodiment of the display panel disclosed herein.

[0090] FIG36 is a partially enlarged view of an embodiment of the display panel disclosed herein.

[0091] 37-40 are schematic diagrams of the first type of touch electrodes in the display panel of the present disclosure.

[0092] FIG41 is a partially enlarged view of a display panel using the first type of touch electrodes.

[0093] FIG42 is a schematic diagram of the second type of touch electrodes in the display panel of the present disclosure.

[0094] FIG43 is a partially enlarged view of another embodiment of the display panel disclosed herein. DETAILED DESCRIPTION

[0095] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0096] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0097] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0098] The row direction X and column direction Y herein are two intersecting directions. In the drawings of this disclosure, the row direction X is horizontal and the column direction Y is vertical, and the two are perpendicular to each other. However, this is not limiting. The row direction X and the column direction Y may also be non-perpendicular. Furthermore, those skilled in the art will appreciate that, as the display panel rotates, the actual orientations of the row direction X and the column direction Y may change, but their relative positions remain unchanged.

[0099] The "overlap" of feature A and feature B in this article means that the orthographic projection of feature A on a plane and the orthographic projection of feature B on the same plane at least partially overlap; the plane can be the surface of the driving backplane, the surface of the substrate that will drive the backplane, or other planes parallel to the driving backplane.

[0100] In this article, A and B are "set in the same layer" means that A and B belong to different continuous or disconnected regions in the same film layer, and each region can be formed at the same time; A and B are located in "different layers" means that A and B belong to different film layers, and different film layers refer to film layers that are not formed at the same time.

[0101] The touch leads, sensing coils, and sensing leads in this document are drawn with specific line widths for the sole purpose of distinguishing them, and do not limit their actual line widths.

[0102] Embodiments of the present disclosure provide a display panel, as shown in Figures 2 and 3 . The display panel includes a display area AA and a peripheral area WA located outside the display area AA. The peripheral area WA can be a continuous annular area surrounding the display area AA, or it can be a discontinuous area surrounding the display area AA. For example, the peripheral area WA can be distributed on both sides of the display area AA. The display area AA can be used to emit light to display images, while the peripheral area WA does not emit light.

[0103] The peripheral area WA is a continuous annular region surrounding the display area AA. It can be enclosed by the fan-out area FA and the peripheral area. The fan-out area FA has a binding portion, which can include multiple conductive contacts PA. The conductive contacts PA can be bound to the driver circuit board PC. The driver circuit board PC has a display chip DIC that controls image display. The driver circuit board PC and the display chip thereon can control the display panel to display images. Of course, the display chip DIC can also be located in the fan-out area FA and bound to some of the conductive contacts PA. These contacts can then be bound to the driver circuit board PC. The driver circuit board PC and the display chip DIC can control the display panel to display images. For example, the display panel has a rectangular outline, and the fan-out area FA is located on one side of the rectangle.

[0104] Furthermore, in some embodiments, the fan-out area FA may include a bending region extending along the row direction X. The bending region is a flexible, bendable structure, and the binding portion is located on the side of the bending region away from the display area AA. By bending the bending region, the fan-out area FA can be bent toward the backlight side of the display panel, i.e., the side opposite the light-emitting direction; thereby, the driver circuit board can be connected to the binding portion on the backlight side of the display panel.

[0105] As shown in FIG5, FIG13, FIG22 and FIG29, the display panel may include a driving backplane PNL and a plurality of light-emitting devices LD provided on one side of the driving backplane PNL, wherein:

[0106] The driver backplane PNL includes a driver circuit that drives the light-emitting devices LD to emit light, thereby displaying an image. In some embodiments of the present disclosure, the driver backplane PNL may include a substrate and a circuit layer located on one side of the substrate. The substrate may be a flat plate made of either a rigid material such as glass or a flexible material such as polyimide. The substrate may have a single-layer or multi-layer structure.

[0107] The circuit layer includes the aforementioned drive circuit. For example, the drive circuit may include a pixel circuit located in the display area AA and a peripheral circuit located in the peripheral area WA. The pixel circuit may have a 3T1C, 7T1C, 8T1C, or other structure, as long as it can drive the light-emitting device LD to emit light. There is no specific limitation on its structure. nTmC indicates that a pixel circuit includes n thin-film transistors (represented by the letter "T") and m capacitors (represented by the letter "C"). The number of pixel circuits may be the same as the number of light-emitting devices LD, and each light-emitting device LD is connected in a one-to-one correspondence. Of course, the same pixel circuit may also be connected to multiple light-emitting devices LD, and there is no specific limitation on this.

[0108] The peripheral circuit is connected to the pixel circuit and is used to input a drive signal to the pixel circuit to control the light emitting device LD to emit light. The peripheral circuit may include a gate drive circuit and a light emitting control circuit. Of course, it may also include other circuits. The specific structure of the peripheral circuit is not particularly limited here.

[0109] The aforementioned driving circuit may include multiple thin-film transistors and capacitors. The thin-film transistors may be top-gate or bottom-gate thin-film transistors. Each thin-film transistor may include an overlapping active layer and a gate electrode. The active layers of each thin-film transistor may be disposed in the same semiconductor layer. Alternatively, the active layers may be disposed in multiple semiconductor layers, with the active layers of different thin-film transistors located in different semiconductor layers. The semiconductor layer may be made of polycrystalline silicon or a metal oxide, without particular limitation.

[0110] The circuit layer may also include traces for transmitting signals connected to the pixel circuits and peripheral circuits. For example, a column of pixel circuits may be connected to a data line extending along the column direction Y, and a data signal may be transmitted through the data line. The data line may extend to the fan-out area FA and be connected to the binding part. The gate drive circuit and the light-emitting control circuit may be connected to multiple traces such as the clock signal line. These traces may also extend to the fan-out area FA and be connected to the binding part.

[0111] As shown in Figure 2, taking a top-gate thin-film transistor as an example, in some embodiments, the circuit layer may include a semiconductor layer, a first gate insulating layer, a first gate layer, a second gate insulating layer, a second gate layer, an interlayer dielectric layer, a first source and drain layer, a passivation layer, a first flat layer, a second source and drain layer, and a second flat layer stacked in sequence along a direction away from the substrate. The active layer of the thin-film transistor is located in the semiconductor layer, the gate is located in the first gate layer, and the two plates of the capacitor are located in the first gate layer and the second gate layer. The first source and drain layer and the second source and drain layer are used to connect at least part of the thin-film transistors and between the thin-film transistor and the capacitor, and are used to transmit driving signals. The type of driving signal and the specific pattern of each film layer depend on the specific composition of the driving circuit and are not specifically limited here.

[0112] As shown in Figures 5, 13, 22, and 29, the light-emitting device LD can be an OLED (organic light-emitting diode) using organic light-emitting materials, or a Mini LED (sub-millimeter light-emitting diode, 100μm-200μm in size), a Micro LED (micro light-emitting diode, 100μm or less in size), or an LED (light-emitting diode, 200μm or greater in size) using inorganic light-emitting materials. No particular limitation is imposed herein, as long as it can emit light. The light-emitting device LD is located within the display area AA. Of course, some of the light-emitting devices LD may also be located in the peripheral area WA. However, the light-emitting devices LD located in the peripheral area WA may be floating and non-emitting.

[0113] Taking the light-emitting device LD as an example, the light-emitting device LD may include a first electrode, a light-emitting layer, and a second electrode stacked in sequence in a direction away from the driving backplane PNL. By applying an electrical signal to the first electrode and the second electrode, the light-emitting layer can be stimulated to emit light. The specific light-emitting principle will not be described in detail here. The first electrode can serve as an anode and the second electrode can serve as a cathode. The materials of both include conductive materials such as metals and metal oxides. The light-emitting layer may include a hole injection layer, a hole transport layer, a light-emitting material layer, an electron transport layer, and an electron injection layer stacked in sequence in a direction away from the driving backplane PNL. Of course, other structures can also be used as long as they can cooperate with the first electrode and the second electrode to emit light.

[0114] The display substrate may further include a pixel definition layer that separates the light-emitting devices LD. The pixel definition layer and the light-emitting devices LD may be disposed on the same surface of the driver backplane PNL. For example, the pixel definition layer and the first electrodes may be disposed on a surface of the second planar layer that is distal from the substrate. The pixel definition layer is thicker than the first electrodes and covers a portion of each first electrode. The pixel definition layer has pixel openings that expose each first electrode, with each pixel opening exposing one first electrode.

[0115] The light-emitting layer and the second electrode are sequentially stacked on the first electrode within the pixel opening. In some embodiments, the light-emitting layer has a discontinuous structure, with the light-emitting layers of each light-emitting device LD independently spaced apart, allowing different light-emitting devices LD to emit different colors. The second electrode has a continuous, single-layer structure, with the portion of the second electrode located within the pixel opening covering the light-emitting layer, and the portion of the second electrode located outside the pixel opening further covering the pixel definition layer. The combined thickness of the light-emitting layer and the second electrode is less than the thickness of the pixel definition layer, resulting in the second electrode being recessed within the pixel opening.

[0116] As shown in Figures 5, 13, 22, and 29, the display panel further includes an encapsulation layer TFE, which can cover each light-emitting device LD to block external moisture and oxygen and prevent the light-emitting device LD from being corroded. In some embodiments of the present disclosure, the encapsulation layer TFE can be a thin film encapsulation method, which can include a first inorganic layer, an organic layer, and a second inorganic layer, wherein:

[0117] The first inorganic layer can cover each light-emitting device LD, that is, the first inorganic layer can cover the surface of the second electrode away from the driving backplane PNL. For a second electrode with a discontinuous structure, the first inorganic layer can also cover the area of ​​the pixel definition layer not covered by the second electrode. The thickness of the first inorganic layer is less than that of the pixel definition layer and can be recessed at the pixel opening. The material of the first inorganic layer can include inorganic insulating materials such as silicon nitride and silicon oxide.

[0118] The organic layer may be disposed on a surface of the first inorganic layer away from the driving backplane PNL, and a boundary of the orthographic projection of the organic layer on the driving backplane PNL may be located in the peripheral area WA to ensure that the organic layer can cover each light emitting device LD.

[0119] The second inorganic layer can cover the organic layer and the first inorganic layer not covered by the organic layer, and can block the intrusion of water and oxygen through the second inorganic layer, and achieve planarization through the organic layer having fluidity before curing. The material of the second inorganic layer can include inorganic insulating materials such as silicon nitride and silicon oxide.

[0120] As shown in Figures 1, 2, 5, 13, 22, and 29, the display panel of the present disclosure can realize the functions of finger touch and electromagnetic touch. A touch function layer TEL can be set on the surface of the packaging layer TFE away from the driver backplane PNL. The touch function layer TEL can sense the touch operation of the finger and generate a touch sensing signal. The touch sensing signal can be processed by the touch chip TIC to determine the touch position. The touch chip TIC can be located in the fan-out area FA and bound to the binding part, or it can be located on the driver circuit board PC. At the same time, it can also sense the electromagnetic signal of an input device 20 that can emit electromagnetic signals, such as an electromagnetic pen, and generate an electromagnetic induction signal when the input device 20 moves. The electromagnetic induction signal can be processed by the electromagnetic chip EIC to determine the position of the input device 20. The electromagnetic chip EIC can be located in the fan-out area FA and bound to the binding part, or it can be located on the driver circuit board PC. The touch chip TIC, the electromagnetic chip EIC and the display chip DIC mentioned above can be independently provided. Of course, two or three of the touch chip TIC, the electromagnetic chip EIC and the display chip DIC can also be integrated into one chip.

[0121] The touch function layer TEL is described in detail below:

[0122] The touch function layer TEL can adopt a capacitive touch structure and an electromagnetic induction structure, wherein:

[0123] The capacitive touch structure can be a mutual capacitance structure or a self-capacitance structure. The touch function layer TEL may include multiple touch electrodes TP, at least some of which are located in the display area AA. The touch electrodes TP can sense the capacitance changes caused by fingers and generate touch sensing signals. The multiple touch electrodes TP and touch leads TL are connected to the touch electrodes TP, and the touch leads TL extend to the fan-out area FA. The touch leads TL can be connected to the conductive contact pad PA to transmit the touch sensing signal.

[0124] Taking a self-capacitive structure as an example, as shown in Figures 4, 12, 21, and 28, the touch function layer TEL may include multiple touch electrodes TP. Each touch electrode TP may be arranged in an array along the row direction X and the column direction Y in the display area AA. The number of touch leads TL may be the same as the number of touch electrodes TP. One end of each touch lead TL is connected to a touch electrode TP, and the other end may extend through the display area AA to the fan-out area FA. The shape of the touch electrode TP may be rectangular or other polygonal. Each touch electrode TP may be arranged on the same layer, and the touch lead TL may be arranged on the same layer as the touch electrode TP or on a different layer. Capacitance may be generated between the touch electrode TP and a finger. When a finger touches the touch area, the capacitance of the touch area may change, thereby generating a touch sensing signal.

[0125] Taking the mutual capacitance structure as an example, the touch function layer TEL may include multiple touch electrodes, including multiple first touch electrodes and second touch electrodes. Each first touch electrode may extend along the row direction X and be spaced apart along the column direction Y. Each second touch electrode may extend along the column direction Y and be spaced apart along the row direction X, such that each second touch electrode intersects with a first touch electrode and the two are insulated at the intersection. The first touch electrode may include multiple first electrode blocks connected sequentially along the row direction X, and the second touch electrode may include multiple second electrode blocks connected sequentially along the column direction Y. The first electrode blocks and the second electrode blocks may be arranged in the same layer. In the area where the second touch electrode intersects the first touch electrode, the second touch electrode and the first touch electrode are located on different layers to achieve insulation.

[0126] The number of touch leads can be the same as the number of touch electrodes, and includes first touch leads and second touch leads. One end of each first touch lead is connected to a first touch electrode, and the other end can extend through the display area AA to the fan-out area FA. One end of each second touch lead is connected to a second touch electrode, and the other end can extend through the display area AA to the fan-out area FA.

[0127] One of the first touch electrode and the second touch electrode can be used as a transmitting electrode, and the other can be used as a receiving electrode. The receiving electrode can receive a driving signal to form a capacitor between adjacent first electrode blocks and second electrode blocks. When a finger touches the touch area, the capacitance of the touch area can change, and the transmitting electrode can send a touch sensing signal.

[0128] In some embodiments of the present disclosure, the touch electrode TP may be a grid structure having multiple meshes. The grid structure may be formed by connecting grid lines. A mesh may be surrounded by multiple grid lines, and a mesh may overlap with at least one light-emitting device, so that light emitted by the light-emitting device can pass through the mesh. The shape of the mesh may be circular, elliptical, or polygonal, such as rectangular, rhombus, or pentagonal. To avoid affecting the light emission of the light-emitting device LD, the shape of the mesh may be the same as the pixel opening, and a mesh may overlap with one or more light-emitting devices LD to allow light to pass through.

[0129] In some embodiments of the present disclosure, the touch electrode TP and the touch lead TL are located in different layers, that is, the touch lead TL and the touch electrode TP are distributed in a direction away from or close to the driving backplane PNL. At this time, the touch lead TL and the touch electrode TP can be overlapped and then connected through a contact hole without routing the touch lead TL from the outside of the touch electrode TP.

[0130] Furthermore, as shown in FIG12 and FIG21 , for a column of touch electrodes TP, the touch lead TL connected to one touch electrode TP may overlap with the touch electrodes TP on the side of the touch electrode TP connected to it that is closer to the fan-out area FA. The lengths of the touch leads TL connecting the touch electrodes TP in the same column decrease as they approach the fan-out area FA, and the touch leads TL are spaced apart along the row direction X to prevent short circuits. Of course, the touch lead TL connected to the touch electrode TP closest to the fan-out area FA overlaps only with that touch electrode TP.

[0131] In some embodiments of the present disclosure, the touch electrode TP and the touch lead TL can be arranged in the same layer. In this case, a touch lead TL can be connected to the edge of a touch electrode TP, and the touch lead TL can be routed outside the touch electrode TP, so that the touch lead TL and the touch electrode TP connected to it are in a column of touch electrodes TP and do not overlap.

[0132] The electromagnetic induction structure described above may include multiple induction coils and induction leads. The induction coils may be connected to the induction leads, and the induction leads extend to the fan-out area FA and may be connected to the conductive contact pad PA. The induction coil may be an open coil structure having a notch EH that disconnects it. The induction leads may be connected to both ends of the notch EH to transmit the electromagnetic induction signal. Specifically, both ends of the notch EH may serve as wiring terminals. Each induction lead may include two independent induction lines, which are connected to two wiring terminals in a one-to-one correspondence and extend to the fan-out area FA. One induction line may be connected to one conductive contact pad PA. The induction lines of the induction leads form an electrical loop with the induction coils. When the input device 20 approaches the area on the display panel corresponding to the induction coil, the induction coil will generate an electromagnetic induction signal.

[0133] An induction coil with a notch EH can be regarded as a “C”-shaped structure with a notch EH, and the direction of the notch EH in the “C”-shaped structure is the direction of the induction coil.

[0134] As shown in Figures 2, 4, 12, 21, and 28, in some embodiments of the present disclosure, the induction coil includes multiple first induction coils EM1 and multiple second induction coils EM2. Each first induction coil EM1 can be rectangular, extend along the row direction X, and be spaced apart along the column direction Y. Each second induction coil EM2 can be rectangular, extend along the column direction Y, and be spaced apart along the row direction X. Furthermore, each first induction coil EM1 and each second induction coil EM2 can be arranged on the same layer, and each first induction coil EM1 and each second induction coil EM2 can be located on different layers. A first induction coil EM1 can simultaneously intersect multiple second induction coils EM2 in space, and a second induction coil EM2 can simultaneously intersect multiple first induction coils EM1 in space. When an input device 20 emitting a magnetic field moves, the first induction coil EM1 and the second induction coil EM2 cut through the magnetic flux lines, generating electromagnetic induction signals. The electromagnetic induction signals generated by the first induction coils EM1 and the second induction coils EM2, which extend in different directions, can be used to determine the corresponding position of the input device 20.

[0135] Each induction coil includes the aforementioned notch EH. The notch EH of the first induction coil EM1 may face one side of the display area AA along the row direction X; the notch EH of the second induction coil EM2 may face the fan-out area FA along the column direction Y. Accordingly, the induction leads may include first induction leads EL1 and second induction leads EL2. A first induction lead EL1 is connected to a first induction coil EM1, and a second induction lead EL2 is connected to a second induction coil EM2. Furthermore, each first induction lead EL1 includes two first induction lines EL11, each connected to one end of the notch EH of the first induction coil EM1. Each second induction lead EL2 includes two second induction lines EL21, each connected to one end of the notch EH of the second induction coil EM2.

[0136] It should be noted that the induction coil and the induction lead connected thereto are located on the same layer and are an integrated structure. That is, the induction coil and the induction lead connected thereto may be formed by winding the same wire along a certain track, and there may be no visible physical boundary between the two.

[0137] As shown in Figures 12, 21, and 28, the first sensing leads EL1 and the second sensing leads EL2 can extend from one or both sides of the display area AA to the fan-out area FA. In some embodiments of the present disclosure, the notches EH of two adjacent first sensing coils EM1 face opposite directions, i.e., the notches EH face opposite sides of the display area AA. Accordingly, the first sensing leads EL1 connecting the two adjacent first sensing coils EM1 are located on opposite sides of the display area AA. This prevents all first sensing leads EL1 from being located on the same side of the display area AA, thus reducing overcrowding. Of course, in other embodiments, the open ends of two adjacent first sensing coils EM1 face the same direction, and all first sensing leads EL1 are located on the same side of the display area AA, which helps narrow the border on the side where the first sensing leads EL1 are not located.

[0138] The touch function layer TEL may include multiple conductive layers, and each conductive layer is distributed in a direction away from the driving backplane PNL. Each conductive layer can be a single-layer or multi-layer structure, and its material may include metals such as titanium, aluminum, molybdenum, silver, copper, etc., and may also include metal oxides such as indium tin oxide, and may also include other conductive materials, which are not specifically limited here. For example, at least one conductive layer may include three sub-layers stacked in sequence in a direction away from the driving backplane PNL. In the direction away from the driving backplane PNL, the materials of the three sub-layers are titanium, aluminum, and titanium, or molybdenum, aluminum, and molybdenum. In addition, adjacent conductive layers may be separated by an insulating layer.

[0139] The aforementioned touch electrodes TP, induction coils, touch leads TL, and induction leads are distributed across multiple conductive layers, with the touch electrodes TP and induction coils overlapping at most. Thus, both finger touch and electromagnetic touch functions can be integrated into the same display panel via the touch function layer TEL, enabling human-computer interaction via both fingers and input device 20. Furthermore, the touch electrodes TP and induction coils are independently configured, preventing the touch electrodes TP from being reused as induction coils and vice versa. This allows both to operate simultaneously, rather than in a time-sharing manner.

[0140] In some embodiments of the present disclosure, a touch electrode TP can be located within the area surrounded by an induction coil, which can be the first induction coil EM1 or the second induction coil EM2. If the induction coil and touch electrode TP are located on different layers, overlap between the touch electrode TP and the induction coil can be avoided, which helps reduce signal interference between the two. If the induction coil and touch electrode TP are located on the same layer, short circuits between the two can be avoided. Of course, for induction coils and touch electrodes TP located on different layers, at least part of the induction coil and touch electrode TP can overlap, which helps reduce the gap between the touch electrodes TP. While maintaining the same size of the touch electrodes TP, it is also possible to provide more touch electrodes TP.

[0141] It should be noted that the aforementioned "touch electrodes TP are located within the range surrounded by the induction coils" means that the orthographic projection of the touch electrodes TP on the driving backplane PNL is within the range surrounded by the orthographic projection of the induction coils on the driving backplane PNL, and the two do not overlap. If the induction coils and touch electrodes TP are arranged on the same layer, the induction coils can be located between the touch electrodes TP.

[0142] As shown in Figures 5, 13, 22 and 29, in some embodiments of the present disclosure, the number of conductive layers may be two, and include a first conductive layer ML1 and a second conductive layer ML2 distributed in a direction away from the driving backplane PNL; the touch electrode TP, the induction coil, the touch lead TL and the induction lead are distributed in the first conductive layer ML1 and the second conductive layer ML2, wherein the induction coil includes a first induction coil EM1 and a second induction coil EM2 located in different layers, and the induction leads include a first induction lead EL1 and a second induction lead EL2.

[0143] In addition, the touch function layer TEL may further include a first insulating layer IS1, a second insulating layer IS2 and a third insulating layer IS3, wherein:

[0144] The first insulating layer IS1 can be disposed on the surface of the packaging layer away from the driver backplane PNL. Its material can be inorganic materials such as silicon nitride, silicon oxide, silicon oxynitride, or organic materials such as optical adhesive. The first conductive layer ML1 can be disposed on the surface of the first insulating layer IS1 away from the driver backplane PNL.

[0145] The second insulating layer IS2 can cover the first conductive layer ML1 and can be made of inorganic materials such as silicon nitride, silicon oxide, silicon oxynitride, or organic materials such as optical adhesive. The second conductive layer ML2 can be disposed on a surface of the second insulating layer IS2 away from the driving backplane PNL.

[0146] The third insulating layer IS3 may cover the second conductive layer ML2 , and its material may be inorganic materials such as silicon nitride, silicon oxide, silicon oxynitride, or organic materials such as optical adhesive.

[0147] In addition, as shown in FIG5, FIG13, FIG22 and FIG29, the display panel may further include a reflection reduction layer POL and a transparent cover plate CG, wherein:

[0148] The anti-reflection layer POL is provided on the side of the touch function layer TEL away from the driving backplane PNL, and can be used to reduce the reflection of the ambient light by the second electrode and other film layers. The anti-reflection layer POL can adopt a circular polarizer, which can prevent the second electrode and other film layers from reflecting the ambient light and emitting it. The specific structure will not be described in detail here. Alternatively, the anti-reflection layer POL can also adopt a filter material to reduce the reflection of the ambient light. For example, the anti-reflection layer POL may include multiple filter parts and light absorbing parts separating the filter parts. A filter part can overlap with a light-emitting device, and the color of the filter part can be the same as the light-emitting color of the light-emitting device it overlaps with. The filter part can reduce the ambient light irradiated to the second electrode and other film layers, and make the ambient light reflected by the second electrode and other film layers difficult to be emitted.

[0149] The transparent cover plate CG may be disposed on the side of the anti-reflection layer POL away from the driving back plate PNL, and may play a protective role and be bonded to the surface of the anti-reflection layer POL away from the driving back plate PNL via an adhesive layer OC.

[0150] In addition, as shown in Figures 5, 13, 22, and 29, the display panel may further include a support layer SU, which may be attached to the side of the driver backplane PNL away from the light-emitting devices. This layer serves to enhance the strength of the display panel and also provides heat dissipation. For example, the support layer SU may include an adhesive layer, a buffer layer, a reinforcement layer, and a heat dissipation layer stacked in sequence away from the driver backplane PNL. The adhesive layer may be made of a material with adhesive properties such as mesh glue. The buffer layer may be made of a flexible material such as foam. The reinforcement layer may be made of polyimide or other flexible materials to increase strength and resist breakage. The heat dissipation layer may be made of copper or other metals with good thermal conductivity, or materials such as graphene. Of course, the stacking order of the adhesive layer, buffer layer, reinforcement layer, and heat dissipation layer may be varied, and one or more of these layers may be omitted. Furthermore, in some embodiments, the support layer SU may not be provided.

[0151] The touch function layer TEL is described below by way of example based on the film layers where the touch electrodes TP, the touch leads TL, the induction coils, and the induction leads are located.

[0152] As shown in Figures 4-11, in the first embodiment of the present disclosure, the first sensing coil EM1 and the first sensing lead EL1 are arranged on the same layer; the touch electrode TP, the touch lead TL, the second sensing coil EM2, and the second sensing lead EL2 are arranged on the same layer, but on a different layer from the first sensing coil EM1 and the first sensing lead EL1. For example, the first sensing coil EM1 and the first sensing lead EL1 are located on the first conductive layer ML1, and the two first sensing lines of the first sensing lead EL1 are both located on the first conductive layer ML1. The touch electrode TP, the touch lead TL, the second sensing coil EM2 and the second sensing lead EL2 are located on the second conductive layer ML2, and the two second sensing lines of the second sensing lead EL2 are both located on the second conductive layer ML2.

[0153] Furthermore, as shown in Figures 4, 6, and 7, a column of touch electrodes TP and the touch leads TL connected thereto are located within the range encompassed by a second sensing coil EM2 within the display area AA. Accordingly, a segment of the second sensing coil EM2 is disposed on each side of a column of touch electrodes TP. In some embodiments, the touch leads TL of any two columns of touch electrodes TP may be located on the same side of the touch electrodes TP to which they are connected. For example, the touch leads TL may be located to the right of the touch electrodes TP to which they are connected. Of course, the touch leads TL may also be located on both sides of the touch electrodes TP to which they are connected.

[0154] Furthermore, in some embodiments, as shown in FIG4 and FIG8 , a row of touch electrodes TP overlaps with a first sensing coil EM1. That is, the orthographic projection of the first sensing coil EM1 on the driving backplane PNL passes through the orthographic projection of the row of touch electrodes TP on the driving backplane PNL along the row direction X, rather than being located outside the orthographic projection of the row of touch electrodes TP on the driving backplane PNL. In this way, the spacing between two adjacent rows of touch electrodes TP can be reduced. For example, the spacing between two adjacent rows of touch electrodes TP can be smaller than the spacing between two adjacent columns of touch electrodes TP.

[0155] In the first embodiment described above, the touch lead TL is located within the range surrounded by the second sensing coil EM2 on the same layer, and the two do not need to cross, and the first sensing coil EM1 does not need to cross with the second sensing lead EL2. The first sensing coil EM1 is located on the first conductive layer ML1, and is located on a different layer from the touch electrode TP, the touch lead TL, the second sensing coil EM2, and the second sensing lead EL2. Even if there is overlap, there will be no short circuit. Therefore, in this embodiment, there is no crossing of the same-layer routing, and thus the insulation of the crossing routing on the same layer can be avoided by using cross-layer jumpers, which is conducive to simplifying the structure, reducing the process difficulty, and also avoiding signal interference caused by crossing layers in the crossing area.

[0156] It should be noted that, to ensure clarity of the traces in the drawings, not all first sensing leads EL1 are shown in FIG4 , but this does not imply their non-existence. Consequently, some first sensing leads EL1 in the cross-sectional views of FIG6-FIG11 are omitted from FIG4 . However, this does not affect a person skilled in the art's understanding of the technical solution based on the textual description and drawings herein, and the person skilled in the art can understand how to implement the technical solution of the present disclosure in the presence of such omissions based on the directly recorded content. Similar omissions may also exist in other drawings of the present disclosure, which will not be specifically addressed here.

[0157] As shown in Figures 12-20, in a second embodiment of the present disclosure, the second sensing coil EM2 and the second sensing lead EL2 are located in the first conductive layer ML1, and both second sensing lines of the second sensing lead EL2 are located in the first conductive layer ML1. The touch electrode TP is located in the second conductive layer ML2, and at least a portion of at least one of the touch lead TL, the first sensing coil EM1, and the first sensing lead EL1 is located in the second conductive layer ML2. For example:

[0158] As shown in Figure 12, the touch lead TL is located on one side of the touch electrode TP to which it is connected and can extend along the column direction Y to the fan-out area FA. The first sensing coil EM1 intersects the touch lead TL. To prevent a short circuit between the two, one of the first sensing coil EM1 and the touch lead TL can be jumpered to the first conductive layer ML1 at the intersection. This means that the second conductive layer ML2 and the first conductive layer jointly form the first sensing coil EM1 or the touch lead TL. Furthermore, at least a portion of the first sensing lead EL1 intersects the touch lead TL. To prevent a short circuit between the two, one of the first sensing lead EL1 and the touch lead TL can be jumpered to the first conductive layer ML1 at the intersection. This means that the second conductive layer ML2 and the first conductive layer jointly form the first sensing lead EL1 or the touch lead TL.

[0159] In some embodiments, as shown in FIG17 , the touch lead TL is located in the second conductive layer ML2. At least a portion of the first sensing coil EM1 includes multiple sensing conductive segments EMm located in the second conductive layer ML2 and a sensing connection segment EMc located in the first conductive layer ML1. Two adjacent sensing conductive segments EMm are connected to the same sensing connection segment EMc via contact holes penetrating the second insulating layer IS2, with the sensing connection segment EMc interconnecting all the sensing conductive segments EMm. The touch lead TL overlaps the sensing connection segment EMc and is spaced apart from the sensing conductive segments EMm. In other words, the touch lead TL can pass between two sensing conductive segments EMm and intersect the sensing connection segment EMc within a space, thereby achieving insulation while intersecting the first sensing coil EM1. Intersecting and insulating the touch lead TL are achieved through a cross-layer jumper in the first sensing coil EM1.

[0160] In some embodiments, the touch lead TL is located in the second conductive layer ML2. At least a portion of the first sensing lead EL1 may include multiple sensing lead segments located in the second conductive layer ML2 and a lead connection segment located in the first conductive layer ML1. Two adjacent sensing lead segments are connected to the same lead connection segment via contact holes passing through the second insulating layer IS2, and the lead connection segment connects the sensing lead segments. The touch lead TL overlaps the lead connection segment and is spaced apart from the sensing lead segments. In other words, the touch lead TL can pass between two sensing lead segments and intersect the lead connection segment within a space, thereby achieving insulation while intersecting with the first sensing lead EL1. Cross-layer jumpers on the first sensing lead EL1 achieve cross-layer insulation and cross-connection with the touch lead TL. The specific jumper principle can be referenced with the cross-layer jumper arrangement of the first sensing coil EM1 in FIG17 .

[0161] Of course, in other embodiments of the present disclosure, the first sensing coil EM1 and the first sensing lead EL1 may be located in the second conductive layer ML2, the touch lead TL may be divided into multiple segments, and respectively disposed in the first conductive layer ML1 and the second conductive layer ML2, and the cross-layer jumper of the touch lead TL may be used to achieve crossing and insulation with the first sensing coil EM1 and the first sensing lead EL1.

[0162] In some embodiments of the present disclosure, as shown in FIG12 , a row of touch electrodes TP is located within a range surrounded by a first sensing coil EM1 in the display area AA. Accordingly, a segment of the first sensing coil EM1 is disposed on each side of a row of touch electrodes TP, such that the first sensing coil EM1 and the touch electrodes TP do not overlap.

[0163] A column of touch electrodes TP and its connected touch leads TL are located within the range encompassed by a second sensing coil EM2 within the display area AA. Accordingly, a segment of the second sensing coil EM2 is disposed on each side of a column of touch electrodes TP. In some embodiments, the touch leads TL of any two columns of touch electrodes TP may be located on the same side of the touch electrodes TP to which they are connected. For example, the touch leads TL may be located to the right of the touch electrodes TP to which they are connected. Of course, the touch leads TL may also be located on both sides of the touch electrodes TP to which they are connected.

[0164] As shown in Figures 21-27, in a third embodiment of the present disclosure, the touch lead TL, the second sensing coil EM2, and the second sensing lead EL2 are arranged on the same layer; the touch electrode TP, the first sensing coil EM1, and the first sensing lead EL1 are arranged on the same layer, but on a different layer from the touch lead TL, the second sensing coil EM2, and the second sensing lead EL2. For example, the touch lead TL, the second sensing coil EM2, and the second sensing lead EL2 are located on the first conductive layer ML1, and the two second sensing lines of the second sensing lead EL2 are both located on the first conductive layer ML1; the touch electrode TP, the first sensing coil EM1, and the first sensing lead EL1 are located on the second conductive layer ML2, and the two first sensing lines of the first sensing lead EL1 are both located on the second conductive layer ML1.

[0165] In some embodiments of the present disclosure, the touch electrodes TP and touch leads TL are located in different layers, and the touch leads TL are arranged overlapping with the touch electrodes TP. The touch electrodes TP can be connected to the touch leads TL via contact holes passing through the second insulating layer IS2. For a column of touch electrodes TP, the touch leads TL connected to each touch electrode TP extend along the column direction Y and are spaced apart along the row direction X. Accordingly, the contact holes connecting the touch electrodes TP and the touch leads TL are also distributed along the row direction X, rather than lying in a straight line in the column direction Y. Each touch lead TL overlaps with the column of touch electrodes TP, so that the space between two adjacent columns of touch electrodes TP does not require a touch lead TL, which helps to reduce the spacing between the two adjacent columns of touch electrodes TP.

[0166] The touch leads TL connected to the touch electrodes TP in the same column can have the same length, and the length of each touch lead TL is no less than the length of the touch lead TL connected to the touch electrode TP farthest from the fan-out area FA. This eliminates the need for touch leads TL of varying lengths, which helps improve the uniformity of the film layer. This ensures that the number of touch leads TL under each touch electrode TP in the same column is the same, which helps maintain a flat surface for the touch electrodes TP. Of course, in other embodiments of the present disclosure, the touch leads TL connected to the touch electrodes TP in the same column can have different lengths, with the touch leads TL connected to touch electrodes TP closer to the fan-out area FA being shorter.

[0167] In some embodiments of the present disclosure, a row of touch electrodes TP is located within the display area AA within the range encompassed by a first sensing coil EM1. Accordingly, a segment of the first sensing coil EM1 is disposed on either side of each row of touch electrodes TP, ensuring that the first sensing coil EM1 and the touch electrodes TP do not overlap. Simultaneously, a column of touch electrodes TP and the touch leads TL connected thereto are located within the range encompassed by a second sensing coil EM2 within the display area AA. Accordingly, a segment of the second sensing coil EM2 is disposed on either side of each column of touch electrodes TP.

[0168] In the third embodiment described above, within the area surrounded by the second sensing coil EM2 located on the same layer as the touch lead TL, the two do not cross, and the touch lead TL and the second sensing lead EL2 do not cross. Furthermore, the second sensing coil EM2, the touch electrode TP, the first sensing coil EM1, and the first sensing lead EL1 are located on different layers. Even if they overlap, they will not short-circuit. Therefore, in this embodiment, there is no crossing of traces on the same layer, thereby avoiding the need for cross-layer jumpers to achieve insulation of cross-layer traces on the same layer. This simplifies the structure, reduces process difficulty, and avoids signal interference caused by cross-layer crossing in the crossing area.

[0169] As shown in FIG. 28 to FIG. 34 , in the fourth embodiment of the present disclosure, the touch electrode TP, the second sensing coil EM2 and the second sensing lead EL2 are located in the second conductive layer ML2 , and the two second sensing lines of any second sensing lead EL2 are located in the second conductive layer ML2 .

[0170] At least a portion of at least one of the touch lead TL, the first sensing coil EM1, and the first sensing lead EL1 is located in the first conductive layer ML1. For example, the touch electrode TP and the touch lead TL are located in different layers. A touch lead TL overlaps with the touch electrode TP connected to it and can be connected through a contact hole passing through the second insulating layer IS2. The relationship between the touch lead TL and the touch electrode TP can be referred to the third embodiment above and will not be described in detail here.

[0171] The first sensing coil EM1 intersects the touch lead TL. To prevent a short circuit between the two, one of the first sensing coil EM1 and the touch lead TL can be jumpered to the second conductive layer ML2 at the intersection. Thus, the second conductive layer ML2 and the first conductive layer jointly form the first sensing coil EM1 or the touch lead TL. Furthermore, at least a portion of the first sensing lead EL1 intersects the touch lead TL. To prevent a short circuit between the two, one of the first sensing lead EL1 and the touch lead TL can be jumpered to the second conductive layer ML2 at the intersection. Thus, the second conductive layer ML2 and the first conductive layer jointly form the first sensing lead EL1 or the touch lead TL.

[0172] In some embodiments, as shown in FIG31 , the touch lead TL is located in the first conductive layer ML1. At least a portion of the first sensing coil EM1 includes multiple sensing conductive segments EMm located in the first conductive layer ML1 and a sensing connection segment EMc located in the second conductive layer ML2. Two adjacent sensing conductive segments EMm are connected to the same sensing connection segment EMc via contact holes penetrating the second insulating layer IS2, with the sensing connection segment EMc interconnecting all the sensing conductive segments EMm. The touch lead TL overlaps the sensing connection segment EMc and is spaced apart from the sensing conductive segments EMm. In other words, the touch lead TL can pass between two sensing conductive segments EMm and intersect the sensing connection segment EMc within a space, thereby achieving insulation while intersecting the first sensing coil EM1. Intersecting and insulating the touch lead TL are achieved through a cross-layer jumper in the first sensing coil EM1.

[0173] Of course, in other embodiments of the present disclosure, the first induction coil EM1 is located in the first conductive layer ML1, and the touch lead TL can be divided into multiple sections, which are respectively arranged in the first conductive layer ML1 and the second conductive layer ML2, and the cross-layer jumper of the touch lead TL is used to achieve crossing and insulation with the first induction coil EM1.

[0174] In some embodiments of the present disclosure, as shown in FIG28 , a row of touch electrodes TP is located within the display area AA within the range encompassed by a first sensing coil EM1. Accordingly, a segment of the first sensing coil EM1 is disposed on either side of each row of touch electrodes TP, ensuring that the first sensing coil EM1 and the touch electrodes TP do not overlap. Simultaneously, a column of touch electrodes TP and the touch leads TL connected thereto are located within the range encompassed by a second sensing coil EM2 within the display area AA. Accordingly, a segment of the second sensing coil EM2 is disposed on either side of each column of touch electrodes TP.

[0175] In addition, in other embodiments of the present disclosure, the first induction coil EM1 and the first induction lead EL1 may also be located in different layers, and the second induction coil EM2 and the second induction lead EL2 may also be located in different layers. That is, the touch electrodes TP, the touch leads TL, the first induction coil EM1 and the first induction lead EL1, and the second induction coil EM2 and the second induction lead EL2 may be distributed in the first conductive layer ML1 and the second conductive layer ML2 in any reasonable manner, and are not limited to the above four embodiments.

[0176] Furthermore, in some embodiments of the present disclosure, as shown in FIG43 , the first sensing lead EL1 may extend directly from the display area AA into the fan-out area FA along the column direction Y. For example, the notch EH of the first sensing coil EM1 is oriented toward the fan-out area FA along the column direction Y, rather than toward the display area AA along the row direction X. The two first sensing lines EL11 of the first sensing lead EL1 are connected to the two ends of the notch EH in a one-to-one correspondence.

[0177] As shown in FIG35 , in some embodiments of the present disclosure, when the induction coil and touch electrode TP are located on different layers and overlap, to reduce signal interference, a through hole TPh can be provided in the region where the touch electrode TP and the induction coil overlap. The induction coil and through hole TPh overlap, thereby reducing the effective overlapping area between the two, minimizing coupling and signal interference. The shape of the through hole TPh can be circular, arched, elliptical, oval, or round, or it can also be a diamond, rectangle, or other polygon, without particular limitation herein.

[0178] Furthermore, in some embodiments, as shown in FIG35 , the induction coil may extend along a specified direction, which may be the row direction X or the column direction Y. The touch electrode TP is provided with a plurality of through holes TPh spaced apart along the specified direction. The induction coil overlaps with each of the through holes TPh, thereby reducing the overlap area between the induction coil and the touch electrode TP. Furthermore, the dimension of the through holes TPh perpendicular to the specified direction is greater than the line width of the induction coil, further reducing the overlap area between the induction coil and the touch electrode TP.

[0179] The shape of the boundary of the orthographic projection of the through hole TPh on the driver backplane BP can be circular, elliptical, polygonal, or other shapes, without particular limitation herein. Furthermore, the through hole TPh preferably has a smaller dimension in the direction of extension of the overlapping induction coil than in a direction perpendicular to the extension direction, ensuring that the induction coil does not extend beyond the boundary of the through hole TPh. Therefore, the through hole TPh can adopt an elliptical, oval, or other shape.

[0180] As shown in Figure 35, in some embodiments of the present disclosure, the boundary of the positive projection of the through hole TPh on the driving backplane BP includes two arc segments TPh1 and a straight line segment TPh2 connecting the two arc segments TPh1; the straight line segment TPh2 overlaps with the induction coil, and the extension direction of the straight line segment TPh2 is perpendicular to the extension direction of the induction coil overlapping with it; further, the number of straight line segments TPH2 can be two, and the two arc segments TPh1 are connected by two straight line segments TPh2 to form a closed figure; the arc segment TPh1 is tangent to the straight line segment TPh2, and the closed figure is a waisted circle.

[0181] In some embodiments, the boundary of the touch electrode TP may be a polygon having sides extending in a straight line along a specified direction. That is, the arrangement direction of the through holes TPh is the same as the extension direction of one side of the touch electrode TP.

[0182] Furthermore, as shown in FIG. 35 , in some embodiments, a break TPc may be provided in the portion of the touch electrode TP located between two adjacent through holes TPh in the same row of through holes TPh. This break TPc connects the two through holes TPh. A break TPc may also be provided along the edge of the touch electrode TP corresponding to one or two outermost through holes TPh in a row of through holes TPh, connecting these one or two through holes TPh to the outside world. The induction coil may overlap with the break TPc, further reducing the overlap area between the induction coil and the touch electrode TP. The width of the break TPc is no less than the line width of the induction coil.

[0183] When setting the break TPc, it should be ensured that the touch electrode TP is not completely cut off, and the number of break TPc is not greater than the number of through holes TPh in the same row. At the same time, since the break TPc will partially cut off the touch electrode TP, the area connecting the two sides of the through hole TPh will be reduced, resulting in increased resistance. Therefore, in order to avoid excessive resistance, the number of break TPc can be limited. For example, the number of break TPc can be no more than 2, which can prevent excessive resistance while reducing the overlapping area.

[0184] As shown in FIG35 , taking the first embodiment described above as an example, the boundaries of the touch electrodes TP are rectangular, and the first sensing coil EM1 overlaps a row of touch electrodes TP in the row direction X. In a row of touch electrodes TP and the overlapping first sensing coil EM1, multiple through holes TPh can be provided on the touch electrodes TP. The multiple through holes TPh can be arranged in two rows, with each row having the same number of through holes TPh. The first sensing coil EM1 has two sections distributed along the column direction Y and extending along the row direction X. These two sections overlap the two rows of through holes TPh. At least some of the through holes TPh are shaped like an oval circle.

[0185] Furthermore, as shown in FIG36 , in some embodiments of the present disclosure, dummy electrodes TPd may be provided in through-holes TPh. These dummy electrodes TPd are arranged in the same layer as the touch electrodes TP and spaced apart, making them floating, meaning they are not connected to any electrical signals. The first sensing coil EM1 overlaps both the through-hole TPh and the dummy electrodes TPd. The presence of the dummy electrodes TPd reduces the hollowed-out area within the through-hole TPh, improving film uniformity and preventing collapse of the first sensing coil EM1. Furthermore, because the dummy electrodes TPd are floating, they do not interfere with the signals of the touch electrodes TP and the first sensing coil EM1.

[0186] Furthermore, as shown in FIG36 , the shape of the dummy electrode TPd can be the same as that of the through-hole TPh, so that the gap between the two extends uniformly. The dummy electrode TPd can also adopt a grid structure, that is, having multiple meshes. The grid structure can be formed by connecting grid lines, and a mesh can be surrounded by multiple grid lines. During manufacturing, the dummy electrode TPd and the touch electrode TP can adopt the same grid structure. By partially disconnecting, that is, by disconnecting some grid lines, the dummy electrode TPd and the touch electrode TP are separated. Of course, the dummy electrode TPd and the touch electrode TP can also adopt a structure without meshes.

[0187] In some embodiments of the present disclosure, as shown in Figures 37-42 , the boundaries of touch electrodes TP are polygonal. Part of the touch electrodes TP are located within the area surrounded by an induction coil and are arranged on the same layer as the induction coil surrounding the touch electrodes TP. The touch electrodes TP have multiple recessed areas TPs near the boundaries of the induction coil surrounding them. These recessed areas TPs increase the distance between the touch electrodes TP and the induction coil, thereby reducing signal coupling and interference.

[0188] Regarding the shape of the recessed regions TPs, the inventors have proposed a variety of solutions, for example:

[0189] The first type of depression

[0190] As shown in Figures 37 to 41, the orthographic projection of the recessed area TPs on the driving backplane PNL may be in the shape of an arc, which may be a circular arc or an elliptical arc. The boundaries of the orthographic projections of two adjacent recessed areas TPs on the driving backplane PNL intersect; for example, as shown in Figures 37 and 38, the boundaries of the orthographic projections of two adjacent recessed areas TPs on the driving backplane PNL and their extension lines may be two circumscribed circles with the same radius, or two intersecting circles with equal radius as shown in Figures 39 and 40. This structure can be regarded as being formed by cutting the edge S1 of a rectangular touch electrode TP. In the first type of embodiment, the recessed area TPs has a larger range, which can minimize the distance from the adjacent induction coil, thereby reducing signal coupling and interference.

[0191] The second type of depression

[0192] As shown in FIG42 , the recessed area TPs can divide the touch electrode TP near the boundary of the induction coil surrounding it into a plurality of protrusions protruding toward the induction coil. The space between two adjacent protrusions is the recessed area TPs. The orthographic projection of the protrusion on the driving backplane PNL can be an arc. For example, the arc can be a circular arc, and the orthographic projections of the multiple protrusions on the driving backplane PNL are tangent and intersecting circular arcs. Of course, the orthographic projection of the protrusion on the driving backplane PNL can also be the two waists of a trapezoid or the two sides of a triangle. The shape of the protrusion is not specifically limited here. Although there are protrusions in the second type of recessed area, it can still be regarded as being formed by cutting the edge of a rectangular touch electrode TP. It can also reduce the distance from the adjacent induction coil, thereby reducing signal coupling and reducing interference.

[0193] It should be noted that the shapes of the above-mentioned through holes TPh, fractures TPc and recessed areas TPs are only descriptions of their overall shapes, and do not limit their contours to standard geometric figures. Moreover, for the virtual electrodes TPd and touch electrodes TP using a grid structure, the through holes TPh, fractures TPc and recessed areas TPs are formed by disconnecting some grid lines, and therefore may not be smooth and continuous linear boundaries.

[0194] The present disclosure also provides a display device, which may include a display panel. The display panel may be any of the above embodiments, and its specific structure and beneficial effects are not further described herein. The display device may be a television, a laptop computer, a tablet computer, or a display such as an electronic whiteboard, and the details are not further detailed here.

[0195] The present disclosure also provides a terminal device, which can be a television, a laptop, a tablet computer, or an electronic whiteboard or other device with display and human-computer interaction functions. As shown in FIG1 , the terminal device may include a display device 10 and an input device 20, wherein:

[0196] The structure and function of the display device 10 can be referenced above in the embodiments of the display panel and display device, and will not be further described here. The input device 20 can be configured to transmit electromagnetic signals. It can be an electromagnetic pen having a circuit capable of transmitting electronic signals, thereby generating a magnetic field around it. When the input device 20 moves within a certain range on the display device 10, the induction coil cuts the magnetic flux lines, generating an electrical signal based on the principle of electromagnetic induction, i.e., an electromagnetic induction signal. The electromagnetic induction signal can be used to determine the position of the input device 20, thereby realizing the electromagnetic touch function.

[0197] Of course, the input device 20 can also be replaced by other devices that can perform functions similar to those of an electromagnetic pen. For example, by setting a circuit that can generate a magnetic field in wearable devices such as smart gloves, smart bracelets, and smart finger sleeves, the function of electromagnetic touch can also be realized. No special limitation is imposed on the input device 20 here.

[0198] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel, wherein: The display panel comprises a display area and a peripheral area outside the display area, wherein the peripheral area includes a fan-out area; and Driver backplane; A plurality of light-emitting devices are distributed in an array on the driving backplane and located in the display area; an encapsulation layer, covering each of the light-emitting devices; A touch function layer is provided on a surface of the packaging layer away from the driving backplane, and includes multiple conductive layers distributed in a direction away from the driving backplane; the touch function layer also includes multiple independent touch electrodes and multiple induction coils at least partially located in the display area, and touch leads and induction leads extending to the fan-out area; the touch leads are connected to the touch electrodes; the induction coils include multiple first induction coils and multiple second induction coils; the first induction coils and the second induction coils extend in different directions and are insulated; the induction leads include first induction leads and second induction leads; the first induction leads are connected to the first induction coils, and the second induction leads are connected to the second induction coils; The touch electrodes, the sensing coils, the touch leads, and the sensing leads are distributed on a plurality of the conductive layers; the first sensing coils are disposed on the same layer, the second sensing coils are disposed on the same layer, and the first sensing leads and the second sensing leads are located on different conductive layers; the touch electrodes and the sensing coils overlap at most.

2. The display panel according to claim 1, wherein The conductive layer includes a first conductive layer and a second conductive layer sequentially distributed in a direction away from the driving backplane; The touch electrodes are arranged in the same layer and are distributed in an array along the row direction and the column direction; the first induction coils extend along the row direction, and the second induction coils extend along the column direction; The touch electrode is located within a range surrounded by the first induction coil or the second induction coil.

3. The display panel according to claim 2, wherein: The induction coil has a disconnected gap, and the induction lead is connected to both ends of the gap; The gap of the first induction coil faces one side of the display area along the row direction, and the gaps of two adjacent first induction coils face opposite directions. The first induction leads connecting the two adjacent first induction coils are located on both sides of the display area. The gap of the second induction coil faces the fan-out area.

4. The display panel according to claim 2, wherein: The induction coil has a disconnected gap; at least part of the gaps of the induction coils located in different layers face the fan-out area; the induction leads are connected to both ends of the gaps, and at least part of the induction leads extend from the display area to the fan-out area.

5. The display panel according to claim 2, wherein: The touch electrodes and the touch leads are located in different layers; a touch lead overlaps with a column of touch electrodes where the touch electrode connected to the touch lead is located. The display panel according to claim 2 , wherein: The touch electrodes and the touch leads are arranged in the same layer; a touch lead and a column of touch electrodes in which the touch electrodes connected thereto are located do not overlap.

7. The display panel according to claim 2, wherein: The first induction coil and the first induction lead are located in the first conductive layer; the touch electrodes, the touch leads, the second induction coil and the second induction lead are located in the second conductive layer; A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

8. The display panel according to claim 7, wherein: The distance between two adjacent rows of touch electrodes is smaller than the distance between two adjacent columns of touch electrodes; and one row of touch electrodes overlaps with one of the first induction coils.

9. The display panel according to claim 2, wherein: The second sensing coil and the second sensing lead are located in the first conductive layer; the touch electrode is located in the second conductive layer; at least a portion of at least one of the touch lead, the first sensing coil, and the first sensing lead is located in the second conductive layer; A row of touch electrodes is located within a range surrounded by the first induction coil in the display area; A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

10. The display panel according to claim 9, wherein: At least part of the first induction coil includes a plurality of induction conductive segments located on the second conductive layer and an induction connecting segment located on the first conductive layer; the induction conductive segments are connected by the induction connecting segment; the touch lead overlaps with the induction connecting segment and is spaced apart from the induction conductive segments; At least part of the first sensing leads includes a plurality of sensing lead segments located in the second conductive layer and lead connecting segments located in the first conductive layer; the sensing lead segments are connected by the lead connecting segments; the touch leads overlap with the lead connecting segments and are spaced apart from the sensing lead segments.

11. The display panel according to claim 2, wherein: The touch lead, the second induction coil and the second induction lead are located in the first conductive layer; the touch electrode, the first induction coil and the first induction lead are located in the second conductive layer; A row of touch electrodes is located within a range surrounded by the first induction coil in the display area; A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

12. The display panel according to claim 2, wherein: At least a portion of at least one of the touch lead, the first sensing coil, and the first sensing lead is located in the first conductive layer; the touch electrode, the second sensing coil, and the second sensing lead are located in the second conductive layer; A row of touch electrodes is located within a range surrounded by the first induction coil in the display area; A row of the touch electrodes and the touch leads connected thereto are located within a range surrounded by the second induction coil in the display area.

13. The display panel according to claim 12, wherein: At least part of the first induction coil includes a plurality of induction conductive segments located in the first conductive layer and an induction connecting segment located in the second conductive layer; the induction conductive segments are connected by the induction connecting segments; the touch leads overlap with the induction connecting segments and are spaced apart from the induction conductive segments.

14. The display panel according to claim 5, wherein: The touch leads connected to the touch electrodes in the same column are spaced apart along the row direction and overlap the touch electrodes connected thereto.

15. The display panel according to claim 2, wherein: At least a portion of the induction coil overlaps with at least a portion of the touch electrode; The touch electrode overlapping with the induction coil is provided with a through hole. The through holes overlap.

16. The display panel according to claim 15, wherein: The boundary of the orthographic projection of the through hole on the driving backplane is elliptical; or The boundary of the orthographic projection of the through hole on the driving backplane includes two arc segments and a straight line segment connecting the two arc segments; the straight line segment overlaps the induction coil, and the extension direction of the straight line segment is perpendicular to the extension direction of the induction coil overlapping with it.

17. The display panel according to claim 15, wherein: The induction coil extends along a specified direction, which is the row direction or the column direction; The touch electrode is provided with a plurality of through holes spaced apart along the designated direction, and the induction coil overlaps with each of the through holes at the same time; and a dimension of the through hole perpendicular to the designated direction is larger than a line width of the induction coil.

18. The display panel according to claim 17, wherein: The touch electrode is provided with a break connecting two adjacent through-holes in the row direction; and / or the touch electrode is provided with a break connecting the outermost through-hole in a row of through-holes; The induction coil overlaps with the fracture.

19. The display panel according to claim 15, wherein: A dummy electrode is provided in the through hole and is arranged on the same layer as the touch electrode. The dummy electrode is spaced apart from the touch electrode.

20. The display panel according to claim 1, wherein The boundary of the touch electrode is polygonal; part of the touch electrode is located within a range surrounded by the induction coil, and the touch electrode has a concave area near the boundary of the induction coil.

21. The display panel according to claim 20, wherein: The boundary of the orthographic projection of the recessed area on the driving back plate is arc-shaped; Boundaries of the orthographic projections of two adjacent recessed areas on the driving backplane intersect.

22. A display device, wherein: The display panel comprises the display panel according to any one of claims 1 to 20.

23. A terminal device, wherein: include: The display device according to claim 22; An input device for transmitting electromagnetic signals.

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