Display Panel and Display Device

A display panel includes an active region and an edge region located on at least one side of the active region. The edge region includes an antenna projection region and a non-antenna projection region located at least one side of the antenna projection region. The active region includes a base substrate, and a display structure layer and a touch structure layer arranged on the base substrate sequentially. The edge region includes isolation dams and edge ground traces arranged on the base substrate. The edge ground traces are located on a side of the isolation dam away from the active region. An overlapping area between the edge ground traces and the antenna projection region is smaller than an overlapping area between the edge ground traces and the non-antenna projection region.

TECHNICAL FIELD

The present disclosure relates to, but is not limited to, the field of display technology, in particular to a display panel and a display device.

BACKGROUND

With development of portable electronic display devices, a new man-machine interaction interface is provided by a touch technology, which is more direct and more humanized in use. The touch technology is integrated with flat display technology to form a display touch device, enabling a flat display device to have a touch function.

SUMMARY

The following is a summary of subject matter described herein in detail. The summary is not intended to limit the protection scope of claims.

An embodiment of the present disclosure provides a display panel and a display device.

In one aspect, an embodiment provides a display panel, including an active region and an edge region located on at least one side of the active region, wherein the edge region includes an antenna projection region and a non-antenna projection region located on at least one side of the antenna projection region. The active region includes a base substrate, and a display structure layer and a touch structure layer arranged sequentially on the base substrate. The edge region includes an isolation dam and edge ground traces arranged on the base substrate. The edge ground traces are located on a side of the isolation dam far away from the active region. An overlapping area between the edge ground traces and the antenna projection region is smaller than an overlapping area between the edge ground traces and the non-antenna projection region.

In some exemplary implementations, a proportion of the overlapping area between the edge ground traces and the antenna projection region in the antenna projection region is less than or equal to 7%.

In some exemplary implementations, a portion of the edge ground traces located on a side of the antenna projection region close to the active region are first traces, and a portion of the edge ground traces located on a side of the non-antenna projection region close to the active region are second traces. A distance between an edge of a side of the first traces close to the active region and an edge of the base substrate is greater than a distance between an edge of a side of the second traces close to the active region and the edge of the base substrate.

In some exemplary implementations, the edge ground traces include an outer ring trace, an inner ring trace, and a plurality of first connection traces; the plurality of first connection traces are connected to the inner ring trace and the outer ring trace; the outer ring trace is located on a side of the inner ring trace away from the active region; and the plurality of first connection traces are located in the non-antenna projection region.

In some exemplary implementations, the inner ring trace includes at least two inner ring trace segments and an inner ring connection segment connected to adjacent inner ring trace segments; and a distance between the inner ring connection segment and the edge of the base substrate is larger than a distance between an inner ring trace segment and the edge of the base substrate.

In some exemplary implementations, the inner ring trace is not overlapped with the antenna projection region, and the inner ring connection segment of the inner ring trace is located on a side of the antenna projection region close to the active region.

In some exemplary implementations, the inner ring trace is provided with a plurality of first openings, which are arranged in at least one column along a direction from the active region towards the edge region.

In some exemplary implementations, the outer ring trace is not overlapped with the antenna projection region, and the outer ring trace at least includes two outer ring trace segments located in the non-antenna projection region.

In some exemplary implementations, the outer ring trace includes at least two outer ring trace segments and an outer ring connection segment connected to adjacent outer ring trace segments; and the at least two outer ring trace segments are located in the non-antenna projection region. A distance between the outer ring connection segment and the edge of the base substrate is larger than a distance between an outer ring trace segment and the edge of the base substrate.

In some exemplary implementations, a width of the outer ring connection segment of the outer ring trace is less than a width of the outer ring trace segment.

In some exemplary implementations, a width of the outer ring connection segment of the outer ring trace is substantially the same as a width of the inner ring connection segment of the inner ring trace.

In some exemplary implementations, the outer ring connection segment of the outer ring trace is located on a side of the antenna projection region close to the inner ring trace.

In some exemplary implementations, the outer ring connection segment is provided with a plurality of second openings, which are arranged in at least one column along a direction from the active region towards the edge region.

In some exemplary implementations, the outer ring connection segment of the outer ring trace is at least partially overlapped with the antenna projection region.

In some exemplary implementations, the outer ring trace further includes a plurality of outer ring extension segments, which are connected to a side of the outer ring connection segment close to the edge of the base substrate, respectively, and extend to the edge of the base substrate; and the plurality of outer ring extension segments are at least partially overlapped with the antenna projection region.

In some exemplary implementations, an orthographic projection of at least one of the plurality of outer ring extension segments on the base substrate is rectangular or T-shaped.

In some exemplary implementations, the outer ring trace further includes: at least one second connection trace; the outer ring connection segment of the outer ring trace is connected to the inner ring connection segment of the inner ring trace through the at least one second connection trace; and a resistance of a second connection trace is substantially the same as that of a first connection trace.

In some exemplary implementations, an orthographic projection of each of the first connection traces and the second connection traces on the base substrate is a zigzag trace.

In some exemplary implementations, a plurality of anti-static capacitors are arranged between the outer ring trace segments of the outer ring trace and the inner ring trace segments of the adjacent inner ring trace, and at least one anti-static capacitor includes a first plate and a second plate, wherein the first plate and the outer ring trace segments are of an integral structure, and the second plate is located on a side of the first plate close to the inner ring trace segments.

In some exemplary implementations, the first plate has a plurality of first comb portions facing the second plate, and the second plate has a plurality of second comb portions facing the first plate, and the plurality of first comb portions and the plurality of second comb portions are interspersed with each other.

In some exemplary implementations, the first plate of the at least one anti-static capacitor is grounded and the second plate is a dummy conductive structure.

In some exemplary implementations, the touch structure layer includes at least one touch conductive layer and a second touch insulation layer located on a side of the at least one touch conductive layer away from the base substrate, and an edge of the second touch insulation layer is overlapped with the anti-static capacitors.

In some exemplary implementations, the touch structure layer includes at least one touch conductive layer; and the edge ground traces and the touch conductive layer are disposed in a same layer.

In some exemplary implementations, the at least one touch conductive layer includes touch traces, and the edge ground traces are located on a side of the touch traces away from the active region.

In some exemplary implementations, the touch structure layer includes a first touch conductive layer, a second touch conductive layer, and a first touch insulation layer located between the first touch conductive layer and the second touch conductive layer, and a boundary of the first touch insulation layer is located on a side of the edge ground traces close to the active region.

In some exemplary implementations, an edge of the base substrate is flush with an edge of the edge ground traces in the edge region.

In another aspect, embodiments of the present disclosure provide a display device including the display panel as described above and an antenna structure, wherein the antenna structure is located on a side of a base substrate of the display panel away from the touch structure layer, and an antenna projection region of the display panel is overlapped with an orthographic projection of the antenna structure on the display panel.

In another aspect, an embodiment of the present disclosure provides a display device including a display panel and an antenna structure. The display panel includes an active region and an edge region located on at least one side of the active region, wherein the edge region includes an antenna projection region and a non-antenna projection region located on at least one side of the antenna projection region. The active region of the display panel includes a base substrate, and a display structure layer and a touch structure layer arranged sequentially on the base substrate. The edge region of the display panel includes touch leads and edge ground traces which are arranged on the base substrate, wherein the edge ground traces are located on a side of the touch lead away from the active region. The touch leads and the edge ground traces are at least partially arranged on a same layer. An orthographic projection of the antenna structure on the display panel is overlapped with the antenna projection region of the display panel. An overlapping area between the edge ground traces and the antenna projection region is smaller than an overlapping area between the edge ground traces and the non-antenna projection region.

In some exemplary implementations, the antenna structure is located on a side of the base substrate of the display panel away from the touch structure layer.

In some exemplary implementations, a portion of the edge ground traces located on a side of the antenna projection region close to the active region are first traces, and a portion of the edge ground traces located on a side of the non-antenna projection region close to the active region are second traces; and a distance between an edge of a side of the first traces close to the active region and an edge of the base substrate is greater than a distance between an edge of a side of the second traces close to the active region and the edge of the base substrate.

Other aspects may be understood upon reading and understanding of the drawings and detailed description.

DETAILED DESCRIPTION

The embodiments of the present disclosure will be described below with reference to the drawings in detail. Implementations may be practiced in a plurality of different forms. Those of ordinary skills in the art may easily understand such a fact that implementations and contents may be transformed into one or more forms without departing from the purpose and scope of the present disclosure. Therefore, the present disclosure should not be explained as being limited to contents described in following implementations only. The embodiments in the present disclosure and features in the embodiments may be combined randomly with each other if there is no conflict.

In the drawings, a size of one or more constituent elements, a thickness of a layer, or a region is sometimes exaggerated for clarity. Therefore, one implementation of the present disclosure is not necessarily limited to the dimensions, and shapes and sizes of various components in the drawings do not reflect actual scales. In addition, the drawings schematically illustrate ideal examples, and one implementation of the present disclosure is not limited to shapes, numerical values, or the like shown in the drawings.

Ordinal numerals such as “first”, “second” and “third” in the present disclosure are set to avoid confusion between constituent elements, but not intended for restriction in quantity. In the present disclosure, “a plurality/multiple” represents two or more than two.

In the present disclosure, for convenience, wordings “central”, “up”, “down”, “front”, “back”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside” and the like indicating orientation or positional relationships are used to illustrate positional relationships between constituent elements with reference to the drawings, which are only used to facilitate describing the present specification and simplify the description, rather than indicating or implying that involved devices or elements must have specific orientations and be structured and operated in the specific orientations, and thus should not be understood as limitations on the present disclosure. The positional relationships between the constituent elements are changed as appropriate based on directions for describing the constituent elements. Therefore, appropriate replacements may be made according to situations without being limited to the wordings described in the specification.

In the present disclosure, unless otherwise specified and defined, terms “mount”, “mutual connection” and “connect” should be understood in a broad sense. For example, a connection may be a fixed connection, or a detachable connection, or an integrated connection. It may be a mechanical connection or an electrical connection. It may be a direct mutual connection, or an indirect connection through a middleware, or an internal communication between two elements. Those of ordinary skills in the art may understand meanings of the above-mentioned terms in the present disclosure according to situations. Among them, an “electrical connection” includes a case where constituent elements are connected together through an element with a certain electrical effect. The “element with the certain electrical effect” is not particularly limited as long as electrical signals between the connected constituent elements may be transmitted. Examples of the “element with the certain electrical effect” not only include electrodes and wirings, but also include switching elements such as transistors, resistors, inductors, capacitors, and other elements with one or more functions, etc.

In the present disclosure, a transistor refers to an element including at least three terminals, namely, a gate electrode, a drain electrode and a source electrode. The transistor has a channel region between the drain electrode (drain electrode terminal, drain region, or drain) and the source electrode (source electrode terminal, source region, or source), and a current can flow through the drain electrode, the channel region and the source electrode. In the present disclosure, the channel region refers to a region through which the current mainly flows.

In the present disclosure, to distinguish two electrodes of a transistor except the gate electrode, one of the two electrodes is referred to as a first electrode and the other electrode is referred to as a second electrode. The first electrode may be a source electrode or a drain electrode, and the second electrode may be a drain electrode or a source electrode. In addition, the gate electrode of the transistor is referred to as a control electrode. In cases that transistors with opposite polarities are used, a current direction changes during operation of a circuit, or the like, functions of the “source electrode” and the “drain electrode” are sometimes interchangeable. Therefore, the “source electrode” and the “drain electrode” are interchangeable in the present disclosure.

In the present disclosure, “parallel” refers to a state in which an angle formed by two straight lines is above −10° and below 10°, and thus also includes a state in which the angle is above −5° and below 5°. In addition, “perpendicular” refers to a state in which an angle formed by two straight lines is above 80° and below 100°, and thus also includes a state in which the angle is above 85° and below 95°.

In the present disclosure, “film” and “layer” are interchangeable. For example, a “conductive layer” may be replaced with a “conductive film” sometimes. Similarly, an “insulation film” may be replaced with an “insulation layer” sometimes.

In the present disclosure, “about” and “substantially” refer to that a boundary is not defined strictly and a case within a range of process and measurement errors is allowed. In the present disclosure, “substantially the same” refers to a case where values differ by less than 10%.

In the present disclosure, “width” means a length in a direction perpendicular an extension direction of a trace in a plane of extension of the trace.

In the present specification, “A extends along a B direction” means that A may include a main portion and a secondary portion connected to the main portion, the main portion is a line, a line segment, or a strip-shaped body, the main portion extends along the B direction, and a length of the main portion extending along the B direction is greater than a length of the secondary portion extending along another direction. “A extends in a B direction” in the present specification always means “a main portion of A extends in a B direction”.

A display panel according to an embodiment of the present disclosure may be integrated with a touch structure. The display panel may include an organic light emitting diode (OLED) display substrate, or may be a Quantum Dot Light Emitting Diodes (QLED) display substrate, or may be a plasma display panel (PDP) display substrate, or may be an electrophoretic display (EPD) display substrate, or may be a liquid crystal display (LCD) substrate. In some examples, the display panel may include an OLED display substrate, and the OLED display substrate may include a base substrate, a drive circuit layer arranged on the base substrate, a light emitting element layer arranged on the drive circuit layer, and an encapsulation layer arranged on the light emitting element layer. The touch structure is arranged on the encapsulation layer of the display substrate to form a structure of Touch on Thin Film Encapsulation (Touch on TFE for short), and the touch structure is integrated with a display structure, which has advantages of lightness and thinness, and foldability, and may meet products requirements such as flexible folding and narrow bezels.

Structures of Touch on TFE mainly include a Flexible Multi-Layer On Cell (FMLOC for short) structure and a Flexible Single-Layer On Cell (FSLOC for short) structure. The FMLOC structure is based on a working principle of mutual capacitance detection, a drive (Tx) electrode and a sensing (Rx) electrode are generally formed by two layers of metal, and an Integrated Circuit (IC) achieves a touch action by detecting mutual capacitance between the drive electrode and the sensing electrode. The FSLOC structure is based on a working principle of self-capacitance (or voltage) detection, a touch electrode is generally formed by using a single layer of metal, and an integrated circuit achieves a touch action by detecting self-capacitance (or voltage) of the touch electrode.

FIG.1Ais a schematic diagram showing conduction of negative charges generated by friction on a surface of a cover plate of a display panel.FIG.1Bis a schematic diagram of a negative electric field in a display panel formed by negative charges generated by friction on a surface of a cover plate. Each ofFIG.1AandFIG.1Bshow a cross-sectional structure of a display panel.

As shown inFIG.1AandFIG.1B, the display panel may include a heat dissipation film layer (SCF)11, a carrier film layer (U-film)12, a display touch substrate13, a Polarizer (POL for short)14, an Optically Clear Adhesive (OCA for short) layer15, and a cover plate (CG)16which are arranged sequentially. The cover plate16may be a glass cover plate. The heat dissipation film layer11may include a conductive heat dissipation layer111and a non-conductive heat dissipation layer112which are stacked sequentially. The carrier film layer12may include a first carrier layer121and a second carrier layer122which are stacked sequentially. For example, a material of the first carrier layer121may be polyethylene terephthalate (PET), and a material of the second carrier layer122may be Pressure Sensitive Adhesive (PSA for short). The display touch substrate13may include a base substrate131, a display structure layer132and a touch structure layer133which are arranged sequentially. The display structure layer132may include a drive circuit layer (e.g. including a plurality of pixel circuits) and a light emitting element layer (e.g. including a plurality of light emitting elements). Each pixel circuit is electrically connected to a light emitting element, and is configured to drive the light emitting element to emit light. The drive circuit layer may at least include a semiconductor layer134(e.g. an active layer including a transistor), a power supply trace135(e.g. a low-voltage line VSS), and a signal trace136. Ink17is coated between the cover plate16and the optical adhesive layer15in a bezel region of the display panel.

As shown inFIG.1AandFIG.1B, a large number of negative charges are generated when a user's finger (corresponding to a metal rod) is rubbed against a surface of the cover plate16. Since charges of a same polarity repel each other, negative charges will diffuse. Since most of the material of the film layer the display panel is a high-resistance material, static electricity is more easily conducted up and down (i.e. conducted along a vertical cross-sectional direction) than conducted transversely (i.e. conducted along a horizontal plane direction), and therefore static electricity accumulates on the surface of the cover plate16and then conducts to a lower layer. Since a metal film layer of the display structure layer132(for example, the power supply trace135and the signal trace136) and a metal film layer of the touch structure layer133of the display touch substrate13may lead out static electricity, most of the static electricity is more likely to be transmitted sequentially to the lower layer from a position at an edge of the display panel where there is no metal layer. As shown inFIG.1B, the cover plate16, the optical adhesive layer15, the polarizer14, the display touch substrate13, and the second carrier layer122of the carrier film layer12all have high conductivity against negative charges, the ink17and the non-conductive heat dissipation layer112of the heat dissipation film layer11have medium conductivity against negative charges, and the first carrier layer121of the carrier film layer12has low conductivity against negative charges. Therefore, the negative charges generated on the surface of the cover plate16is transferred from the edge of the display panel to the lower layer, passes through the optical adhesive layer15, the polarizer14, an insulation layer of the display touch substrate13, and the base substrate131sequentially, and accumulates on a side of the base substrate131of the display touch substrate13away from the cover plate16(i.e., the back surface) to form a negative electric field. The negative electric field formed on the display touch substrate13causes a threshold voltage (Vth) of the transistor of the drive circuit layer to be biased forward, thereby making the display touch substrate13be illuminated. For example, since the green sub-pixel is sensitive to start, the display panel often shows poor display with greenish screen.

In some implementations, the display panel needs to be assembled with an antenna structure. After the display panel is assembled with the antenna structure, a metal film layer in the display panel which is overlapped with the antenna structure will affect the antenna structure, which will attenuate a Total Isotropic Sensitivity (TIS for short) and a signal reception and transmission of the antenna structure, and affect performance of the antenna structure.

In one aspect, an embodiment provides a display panel, including an active region and an edge region located on at least one side of the active region. The edge region includes an antenna projection region and a non-antenna projection region located on at least one side of the antenna projection region. The active region includes a base substrate, and a display structure layer and a touch structure layer arranged sequentially on the base substrate. The edge region includes an isolation dam and edge ground traces arranged on the base substrate. The edge ground traces are located on a side of the isolation dam away from the active region. An overlapping area between the edge ground traces and the antenna projection region is smaller than an overlapping area between the edge ground traces and the non-antenna projection region.

In some examples, the antenna projection region may be a projection region of the antenna structure on the display panel. The antenna projection region and the non-antenna projection region may both be located on a side of the isolation dam in the edge region away from the active region. The antenna projection region may not be overlapped with the non-antenna projection region. For example, the non-antenna projection region may surround a periphery of the antenna projection region, or the non-antenna projection region and the antenna projection region may be adjacent along one direction. This embodiment is not limited thereto.

In the display panel according to the embodiment, the negative charges generated on the surface of the cover plate of the display panel may be led out by arrangement of the edge ground traces in the edge region of the display panel, thereby blocking an electrostatic conduction path, reducing the negative electric field formed inside the display panel, and improving the illumination of the display structure layer caused by the negative electric field. Moreover, by reducing the overlapping area between the edge ground traces and the antenna projection region, influence of the edge ground traces on the Total Isotropic Sensitivity and the signal reception and transmission of the antenna structure may be reduced, and a shielding and interference of the edge ground traces on antenna signals may be reduced, thus ensuring the performance of the antenna structure.

In some exemplary implementations, the overlapping area between the edge ground traces and the antenna projection region may be less than or equal to 7% of the antenna projection region. Among them, a proportion of the overlapping area between the edge ground traces and the antenna projection region in the antenna projection region may be equal to a proportion of the overlapping area between the edge ground traces and the antenna projection region to a total area of the antenna projection region. In some examples, the edge ground traces may be not overlapped with the antenna projection region. In other words, the overlapping area between the edge ground traces and the antenna projection region may be 0. In this example, by providing the edge ground traces to completely avoid the antenna structure, the negative charges generated on the surface of the cover plate of the display panel may be led out and the shielding and interference to antenna signals may be avoided. In some examples, the proportion of the overlapping area between the edge ground traces and the antenna projection region in the antenna projection region may be about 7%. In this example, by providing the edge ground traces to completely avoid the antenna structure, not only an effect that the negative charges generated on the surface of the cover plate of the display panel are led out may be ensured, but also the shielding and interference to antenna signals may be reduced, so that the leading out of the electrostatic of the display panel and the performance of the antenna structure may achieve better effects.

In some exemplary implementations, the edge ground traces may include an outer ring trace, an inner ring trace, and a plurality of first connection traces. The plurality of first connection traces are connected to the inner ring trace and the outer ring trace. For example, the inner ring trace, the outer ring trace and the plurality of first connection traces may be of an integral structure. The outer ring trace may be located on a side of the inner ring trace away from the active region. The plurality of first connection traces may be located in the non-antenna projection region, and in other words, the plurality of first connection traces may not be overlapped with the antenna projection region. In this example, the inner ring trace, the first connection trace and the outer ring trace may be used to lead out the negative charges generated on the surface of the cover plate of the display panel, thereby blocking the electrostatic conduction path and improving a display effect of the display panel.

In some exemplary implementations, an orthographic projection of the first connection trace on the base substrate may be a zigzag trace. Among them, the zigzag trace is a bending curve. For example, after one end of the trace extends along one direction for a certain distance, it bends circuitously and extends along an opposite direction of this direction for a certain distance, bends circuitously again and extends along this direction, and in this way, repeatedly bends circuitously several times to form a zigzag trace. In this example, by providing the first connection trace as a zigzag trace, a resistance of the edge ground traces may be increased, thus preventing electrostatic breakdown and serving a protective function.

In some exemplary implementations, the inner ring trace may include at least two inner ring trace segments and an inner ring connection segment connected to adjacent inner ring trace segments. A distance between the inner ring connection segment and an edge of the base substrate may be greater than a distance between an inner ring trace segment and the edge of the base substrate. In some examples, the inner ring trace may not be overlapped with the antenna projection region, and the inner ring connection segment of the inner ring trace may be located on a side of the antenna projection region close to the active region. In this example, the overlapping area between the edge ground traces and the antenna projection region may be reduced by providing the inner ring connection segment to be retracted into the active region to bypass the antenna projection region, thus improving the shielding and interference of the edge ground traces to antenna signals. Moreover, keeping the inner ring trace continuous near the antenna projection region may ensure that the negative charges generated on the surface of the cover plate of the display panel are led out, thereby blocking the electrostatic conduction path and improving the display effect of the display panel.

In this example, the distance between a certain trace and an edge of the base substrate may be referred to a distance between the trace and a nearest edge of the base substrate. In the edge region, the edge of the base substrate may be flush with the edge of the edge ground traces.

In some exemplary implementations, the outer ring trace may be not overlapped with the antenna projection region. For example, the outer ring trace may include two outer ring trace segments located in the non-antenna projection region. The two outer ring trace segments are not overlapped with the antenna projection region. In other words, the antenna projection region may not be provided with the outer ring trace. In this example, by cutting off the outer ring trace in the antenna projection region to avoid the antenna projection region, the overlapping area between the edge ground traces and the antenna projection region may be reduced, thus improving the shielding and interference of the edge ground traces to antenna signals.

In some exemplary implementations, the outer ring trace may include at least two outer ring trace segments, and an outer ring connection segment connected to adjacent outer ring trace segments. The at least two outer ring trace segments are located in the non-antenna projection region. A distance between the outer ring connection segment and an edge of the base substrate may be greater than a distance between an outer ring trace segment and the edge of the base substrate. In some examples, the outer ring connection segment of the outer ring trace may be located on a side of the antenna projection region close to the inner ring trace. For example, the outer ring connection segment and the antenna projection region may not be overlapped with each other. In this example, the overlapping area between the edge ground traces and the antenna projection region is thus reduced by providing the outer ring connection segment to be retracted into the active region to bypass the antenna projection region, thus improving the shielding and interference of the edge ground traces to antenna signals. Moreover, keeping the outer ring trace continuous near the antenna projection region may ensure that the negative charges generated on the surface of the cover plate of the display panel are led out, thereby blocking the electrostatic conduction path and improving the display effect of the display panel. In some other examples, the outer ring connection segment of the outer ring trace may be overlapped with the antenna projection region. For example, a width of the outer ring connection segment may be smaller than a width of an outer ring trace segment. In this example, by reducing the overlapping area between the outer ring trace and the antenna projection region, the shielding and interference of the edge ground traces to antenna signals may be improved.

In some exemplary implementations, a portion of the edge ground traces located on a side of the antenna projection region close to the active region are first traces, and a portion of the edge ground traces located on a side of the non-antenna projection region close to the active region are second traces. A distance between an edge at a side of the first traces close to the active region and an edge of the base substrate may be greater than a distance between an edge at a side of the second traces close to the active region and the edge of the base substrate. In some examples, the first traces may only include inner ring trace, or may include an inner ring trace and an outer ring trace that are not connected to each other, or may include an inner ring trace and an outer ring trace that are connected to each other. The second traces may include an inner ring trace, an outer ring trace, and a first connection trace connected to the inner ring trace and the outer ring trace. This embodiment is not limited thereto. In this example, the edge ground traces are provided to be retracted towards one side of the active region to completely avoid or partially avoid the antenna projection region, which may ensure an effect of leading out the negative charges generated on the surface of the cover plate of the display panel and reduce the shielding and interference to antenna signals.

In some exemplary implementations, the touch structure layer may include at least one touch conductive layer, and the edge ground traces and the touch conductive layer may be disposed in a same layer. For example, the touch structure layer may include a plurality of touch conductive layers, and the edge ground traces may be in a same layer as a touch conductive layer closest to the cover plate, and the cover plate may be located on a side of the touch structure layer away from the base substrate. In this example, by providing the edge ground traces to be in the same layer as the touch conductive layer, most of the static electricity may be effectively led out, thus reducing the negative electric field formed inside the display panel, and improving the illumination problem caused by the negative electric field.

In some exemplary implementations, at least one touch conductive layer may include touch traces, and the edge ground traces may be located on a side of the touch traces away from the active region. For example, the touch traces may include a plurality of second panel crack detection lines. In the edge region, a plurality of touch leads, a guard line, a first ground line and a plurality of second panel crack detection lines may be arranged sequentially along a direction away from the active region.

The display panel according to this embodiment will be illustrated by some examples below.

In some examples, a flexible display panel is taken as an example. In a preparation process of the flexible display panel, a display motherboard is prepared firstly, and then the display motherboard is cut, so that the display motherboard is divided into a plurality of display touch substrates, and the separated display touch substrates may be used to form a single display panel.FIG.2is a schematic diagram of an arrangement of a plurality of display touch substrates included on a display motherboard. As shown inFIG.2, a plurality of substrate regions200on the display mother plate100are periodically and regularly arranged, and a cutting region300is located outside the substrate regions200. Each substrate region200at least includes an active region AA and a bonding region B1located on at least one side of the active region AA. For example, the active region AA may include a plurality of sub-pixels arranged regularly and the bonding region B1may include a fan-out region and bonding pins. A first cutting path X1and a second cutting path X2are provided in the cutting region300. After all the film layers of the display motherboard are prepared, a cutting equipment performs rough cutting and fine cutting along the first cutting path X1and the second cutting path X2to form a display touch substrate.

FIG.3is a schematic diagram of a display panel according to at least one embodiment of the present disclosure. The display panel of this example is illustrated by taking an FMLOC structure as an example. However, this embodiment is not limited thereto. In some other examples, the display panel may be in an FSLOC structure with a single touch conductive layer.

In some examples, as shown inFIG.3, in a plane parallel to the display panel, the display panel may include an active region AA, and a peripheral region located at a periphery of the active region AA. The peripheral region may include a bonding region B1located on one side of the active region AA and an edge region B2located on another side of the active region AA. For the stacked display substrate and touch structure, the active region AA may be either a touch region or a display region, and both the touch region and the display region in the following description refer to active regions AA.

In some examples, as shown inFIG.3, the touch region may at least include a plurality of touch electrodes arranged regularly, the edge region B2at least includes a plurality of touch leads, and the edge ground traces35, and the bonding region B1at least includes pins connecting the plurality of touch leads and the edge ground traces35to an external control device. The negative charges generated on the surface of the cover plate may be led out by arranging the edge ground traces35in the peripheral region of the display panel, thereby blocking the electrostatic conduction path, reducing the negative electric field formed inside the display panel, and improving the illumination of the display structure layer caused by the negative electric field.

In some examples, the touch structure may be in a mutual capacitance structure. As shown inFIG.3, the touch region may include a plurality of first touch units310and a plurality of second touch units320. The first touch units310may have a linear shape extending along a first direction D1and the plurality of first touch units310may be arranged sequentially along a second direction D2. The second touch units320may have a linear shape extending along the second direction D2and the plurality of second touch units320may be arranged sequentially along the first direction D1. Among them, the first direction D1intersects with the second direction D2, for example, the first direction D1may be perpendicular to the second direction D2. Each first touch unit310may include a plurality of first touch electrodes311and first connection portions312which are arranged sequentially along the first direction D1, and the first touch electrodes311and the first connection portion312are alternately arranged and electrically connected sequentially. Each second touch unit320may include a plurality of second touch electrodes321arranged sequentially along the second direction D2, and the plurality of second touch electrodes321are arranged at intervals. Adjacent second touch electrodes321are electrically connected to each other by a second connection portion322. In some examples, a film layer where the second connection portions322are located may be different from film layers where the first touch electrodes311and the second touch electrodes321are located. The first touch control electrodes311and the second touch control electrodes321may be alternately arranged in a third direction D3, and the third direction D3may intersect with both the first direction D1and the second direction D2.

In some examples, the plurality of first touch electrodes311, the plurality of second touch electrodes321, and the plurality of first connection portions312may be arranged on a same layer, i.e., a touch layer, and may be formed through a same patterning process, and the first touch electrodes311and the first connection portions312may be connected to each other in an integrated structure. The second connection portions322may be arranged on a bridging layer, and adjacent second touch electrodes321are electrically connected to each other through a via. A touch insulation layer is arranged between the touch layer and the bridging layer. In some possible implementations, the plurality of first touch electrodes311, the plurality of second touch electrodes321and the plurality of second connection portions322may be arranged on a same layer, i.e., the touch layer, and the second touch electrodes321and the second connection portions322may be connected to each other in an integrated structure. The first connection portions312may be arranged on the bridging layer and adjacent first touch electrodes311are electrically connected to each other through vias. In some examples, the first touch control electrodes may be drive (Tx) electrodes and the second touch control electrodes may be sensing (Rx) electrodes. Or, the first touch control electrodes may be sensing (Rx) electrodes and the second touch control electrodes may be drive (Tx) electrodes. However, this embodiment is not limited thereto.

In some examples, the first touch control electrodes311and the second touch control electrodes321may each have a rhombus shape, such as a regular rhombus, a horizontally longer rhombus, or a vertically longer rhombus. In some possible implementations, the first touch electrodes311and the second touch electrodes321may have any one or more of shapes of triangles, squares, trapezoids, parallelograms, pentagons, hexagons, and other polygons, which are not limited in the present disclosure.

In some examples, the first touch electrodes311and the second touch electrodes321may be in a form of transparent conductive electrodes. In some examples, the first touch electrodes311and the second touch electrodes321may be in a form of metal meshes. The metal mesh is formed by a plurality of interweaving metal wires and includes a plurality of mesh patterns. The mesh patterns are polygons formed by a plurality of metal wires. The first touch electrodes311and the second touch electrodes321in the form of the metal mesh have advantages of small resistance, small thickness, fast response speed, and the like.

In some examples, as shown inFIG.3, the bonding region B1is located on a side of the active region AA, and in a direction away from the active region AA (e.g., the second direction D2), the bonding region B1may include a first fan-out region201, a bending region202, a second fan-out region203, an anti-static region204, a drive chip region205, and a bonding pin region206arranged sequentially. The first fan-out region201may be provided with signal transmission lines and touch leads of the display substrate. The signal transmission lines of the display substrate may at least include a high-voltage line VDD, a low-voltage line VSS and a plurality of data transmission lines. The plurality of data transmission lines are configured to be connected to data lines of the display region in a fan-out tracing manner, and the high-voltage line VDD and the low-voltage line VSS are configured to be connected to a high-level power line and a low-level power line of the display substrate respectively. The plurality of touch leads are configured to be correspondingly connected to a plurality of pins of the bonding pin region206. A groove may be formed in the bending region202. The groove is configured to bend the second fan-out region203, the anti-static region204, the drive chip region205, and the bonding pin region206to a back surface of the active region AA. The second fan-out region203may be provided with a plurality of touch leads and a plurality of data transmission lines which are led out in a fan-out manner. An anti-static circuit may be provided in the anti-static region204. The anti-static circuit is configured to eliminate static electricity. A source drive circuit (Driver IC) may be provided in the drive chip region205. The source drive circuit is configured to be electrically connected to the plurality of data transmission lines in the second fan-out region203. In some possible implementations, the driver chip region205may be provided with a Touch and Display Driver Integration (TDDI for short) circuit. The bonding pin region206may be provided with a plurality of pins, which are correspondingly connected to the plurality of touch leads and a plurality of signal transmission lines of the source drive circuit, and are connected to an external control device through a flexible printed circuit board (FPC) bound thereto.

In some examples, as shown inFIG.3, the edge region B2is located on several sides of the active region AA away from the bonding region B1. For example, the bonding region B1may be located on a lower side of the active region AA, and the edge region B2may be located on an upper side, a left side and a right side of the active region AA. The edge region B2is at least provided with edge ground traces35and a plurality of touch leads. The edge ground traces35may extend from the edge region B2to the bonding region B1, and are electrically connected to ground pins in the bonding pin region206of the bonding region B1.

In some examples, the plurality of touch leads may include a plurality of drive leads and a plurality of sensing leads. Taking the first touch electrodes being drive electrodes and the second touch electrodes being sensing electrodes as an example, first ends of the drive leads are electrically connected to the first touch electrodes respectively, and second ends of the drive leads extends to the bonding region B1along the edge region B2. First ends of the sensing leads are electrically connected to second touch control electrodes, and second ends of the sensing leads extend along the edge region B2to the bonding region B1. However, this embodiment is not limited thereto.

In some examples, the outer sides of the bonding region B1and the edge region B2are provided with a first cutting line and a second cutting line. The second cutting line is a fine cutting line located at a periphery of the bonding region B1and the edge region B2, and a shape of the second cutting line is the same as outer contours of the bonding region B1and the edge region B2. The first cutting line is a rough cutting line and is located at a periphery of the second cutting line, and a shape of the first cutting line may be approximately the same as a contour of the second cutting line. In this example, the edge of the edge ground traces35away from the active region AA may be obtained by the second cut line. However, this embodiment is not limited thereto.

FIG.4is a partial cross-sectional view along direction P-P′ inFIG.3. In some examples, as shown inFIG.3andFIG.4, in a direction perpendicular to the display panel, the display panel of the active region AA may include a base substrate30, a display structure layer41and a touch structure layer31that are arranged sequentially on the base substrate30. The display structure layer41may include a drive circuit layer42, a light emitting structure layer43and an encapsulation layer44that are arranged sequentially on the base substrate30. The touch structure layer31takes the encapsulation layer44as a base substrate. In some possible implementations, the display structure layer may include other film layers and other film layers may also be arranged between the touch control structure layer and the encapsulation layer, which is not limited here in the present disclosure.

In some examples, the base substrate30may include a first flexible material layer, a first inorganic material layer, a semiconductor layer, a second flexible material layer, and a second inorganic material layer which are stacked, materials of the first flexible material layer and the second flexible material layer may be Polyimide (PI), Polyethylene Terephthalate (PET), or a polymer soft film after a surface treatment, etc. Materials of the first inorganic material layer and the second inorganic material layer may be Silicon Nitride (SiNx) or Silicon Oxide (SiOx), etc., for improving capabilities of water-resistance and oxygen-resistance of the base substrate, and a material of the semiconductor layer may be amorphous silicon (a-si). However, this embodiment is not limited thereto.

In some examples, the drive circuit layer42of the active region AA may include transistors and storage capacitors constituting a pixel circuit.FIG.4illustrates one transistor (e.g. a first transistor421) of a pixel circuit of one sub-pixel of the active region AA as an example. In some examples, as shown inFIG.4, the drive circuit layer42of the active region AA may include a semiconductor layer, a first insulation layer411, a first gate metal layer, a second insulation layer412, a second gate metal layer, a third insulation layer413, a first source-drain metal layer, a fourth insulation layer414, a first planarization layer415, a second source-drain metal layer, and a second planarization layer416which are arranged sequentially on the base substrate30. In some examples, the semiconductor layer at least includes an active layer of the first transistor421. The first gate metal layer at least includes a gate electrode of the first transistor421, and a first capacitor plate of a capacitor of the pixel circuit. The second gate metal layer at least includes a second capacitor plate of a capacitor of the pixel circuit. The first source-drain metal layer at least includes a first electrode and a second electrode of the first transistor421. The second source-drain metal layer at least includes an anode connection electrode428, and the anode connection electrode428is configured to be connected to an anode of the light emitting element and the pixel circuit.

In some examples, the first insulation layer411, the second insulation layer412, the third insulation layer413, and the fourth insulation layer414may be inorganic insulation layers, and first planarization layer415and the second planarization layer416may be organic insulation layers. For examples, the first insulation layer411, the second insulation layer412, the third insulation layer413, and the fourth insulation layer414may be made of any one or more of Silicon Oxide (SiOx), Silicon Nitride (SiNx), and Silicon Oxynitride (SiON), and may be a single layer, a multi-layer, or a composite layer. Among them, the first insulation layer411and the second insulation layer412may be referred to as Gate Insulation (GI) layers, the third insulation layer413may be referred to as an Interlayer Dielectric (ILD) layer, and the fourth insulation layer414may be referred to as a passivation (PVX) layer. The first gate metal layer, the second gate metal layer, the first source-drain metal layer, and the second source-drain metal layer may be made of a metal material, such as any one or more of silver (Ag), copper (Cu), aluminum (Al), titanium (Ti), and molybdenum (Mo), or an alloy material of the above metals, such as an Aluminum Neodymium (AlNd) alloy or a Molybdenum Niobium (MoNb) alloy, and may be in a single-layer structure or a multi-layer composite structure, such as Ti/Al/Ti. The semiconductor layer may be made of a material, such as an amorphous indium gallium zinc oxide material (a-IGZO), zinc oxynitride (ZnON), indium zinc tin oxide (IZTO), amorphous silicon (a-Si), polycrystalline silicon (p-Si), sexithiophene or polythiophene, that is, the present disclosure is applicable to transistors manufactured based on oxide technology, silicon technology or organic technology.

In some examples, as shown inFIG.4, the light emitting structure layer43of the active region AA may include an anode431, a pixel definition layer434, an organic light emitting layer432, and a cathode433. The anode431is arranged on the second planarization layer416, and is electrically connected to an anode connection electrode428through a via formed in the second planarization layer416. The pixel definition layer434is arranged on the anode431and the second planarization layer416, on which a pixel opening is formed, and the pixel opening exposes at least a portion of a surface of the anode431. The organic light emitting layer432is arranged within the pixel opening, and the cathode433is arranged on the organic light emitting layer432, wherein the organic light emitting layer432emits light with corresponding colors under the action of voltages applied by the anode431and the cathode433. In some examples, the pixel definition layer434may be made of a material such as polyimide, acrylic, or polyethylene terephthalate.

In some exemplary implementations, as shown inFIG.4, the encapsulation layer44of the active region AA may include a first encapsulation layer441, a second encapsulation layer442and a third encapsulation layer443that are stacked. The first encapsulation layer441and the third encapsulation layer443may be made of an inorganic material, the second encapsulation layer442may be made of an organic material, and the second encapsulation layer82is arranged between the first encapsulation layer441and the third encapsulation layer443, which may ensure that external vapor can not enter into the light emitting structure layer43.

In some examples, as shown inFIG.4, the touch structure layer31of the active region AA may include a buffer layer (omitted inFIG.4), a first touch conductive layer (TMA), a first touch insulation layer (TLD)301, a second touch conductive layer (TMB), and a second touch insulation layer (TOC)302that are stacked sequentially. For example, the first touch conductive layer may be the bridging layer above described, and the second touch conductive layer may be the touch layer above described. The first touch conductive layer may include the second connection portions322, and the second touch conductive layer may include the first touch electrodes311, the second touch electrodes321, and the first connection portions312. In some examples, the buffer layer and the first touch insulation layer301may be made of an inorganic material, and the second touch insulation layer302may be made of an organic material. For example, the buffer layer and the first touch insulation layer301may be made of any one or more of silicon oxide (SiOx), silicon nitride (SiNx), and silicon oxynitride (SiON), and may be in a single layer, a plurality of layers, or a composite layer. The second touch insulation layer302may be made of polyimide (PI) or the like. However, this embodiment is not limited thereto.

In some examples, as shown inFIG.4, the edge region B2may include a first sub-edge region B21, a second sub-edge region B22, and a third sub-edge region B23along a direction away from the active region AA. The first sub-edge region B21at least includes a gate drive circuit, a plurality of touch leads313, and a first ground trace331. In some examples, the touch leads313and the first ground trace331may be of a double-layer trace structure. For example, one touch lead313may include a first sub-lead313aand a second sub-lead313belectrically connected to each other. The first ground trace331may include a first sub-ground trace331aand a second sub-ground trace331belectrically connected to each other. The second sub-edge region B22is located on a side of the first sub-edge region B21away from the active region AA, and the second sub-edge region B22at least includes a first isolation dam513, a second isolation dam514, and at least one (e.g. three) first Panel Crack Detection (PCD for short) line516. The at least one first panel crack detection line516may be configured to detect the display structure layer41. The third sub-edge region B23is located on a side of the second sub-edge region B22away from the active region AA, and the third sub-edge region B23may at least include a crack dam515and edge ground traces35.

In some examples, as shown inFIG.4, the display panel of the first sub-edge region B21may include a base substrate30, and a drive circuit layer42, a first planarization layer415, a second planarization layer416, a first connection electrode512, an isolation post511, a cathode433, an encapsulation layer44, a plurality of first sub-leads313aand a first sub-ground trace331arranged on the encapsulation layer44, a first touch insulation layer301, a plurality of second sub-leads313band a second sub-ground trace331barranged on the first touch insulation layer301, and a second touch insulation layer302which are arranged sequentially on the base substrate30. The drive circuit layer42of the first sub-edge region B21may include a transistor and a storage capacitor constituting a gate drive circuit. In some examples, the gate drive circuit of the first sub-edge region B21may include a scan drive circuit and a light emitting control drive circuit. The edge region B2is illustrated inFIG.4by taking one transistor (e.g. a second transistor422) and one capacitor (e.g. a first capacitor424) of the scan drive circuit, and one transistor (e.g. a third transistor423) and one capacitor (e.g. a second capacitor425) of the light emission control drive circuit as an example. A film layer structure of the drive circuit layer of the first sub-edge region B21may be similar to a film layer structure of the drive circuit layer of the active region AA, and therefore will not be described here.

In some examples, as shown inFIG.4, the first sub-ground trace331aand the plurality of first sub-leads313amay be disposed in a same layer as the first touch conductive layer, the second sub-ground trace331band the plurality of second sub-leads313bmay be disposed in a same layer as the second touch conductive layer, and the plurality of first sub-leads313aand the plurality of second sub-leads313bmay be electrically connected in a one to one correspondence, thereby achieving the touch leads313of the double-layer trace structure. The first sub-ground trace331aand the second sub-ground trace331bare electrically connected to each other to achieve the first ground trace331of the double-layer trace structure. A guard line may be provided between the touch leads313and the first ground trace331, and the guard line315may include a first guard sub-line315aand a second guard sub-line315belectrically connected, wherein the first guard sub-line315aand the first touch conductive layer may be disposed in a same layer, and the second guard sub-line315band the second touch conductive layer may be disposed in a same layer. In other words, in this example, the guard line315may be in a double-layer trace structure. At least one (e.g. two) second panel crack detection lines314may also be arranged on a side of the first ground line331away from the touch leads313and the guard line315. The at least one second panel crack detection line314may be configured to detect the touch structure layer31. The At least one second panel crack detection line314may be disposed in a same layer as the second touch conductive layer. However, this embodiment is not limited thereto. In some other examples, the first ground trace331, the touch leads313, and the guard line315may be in a single-layer trace structure, which may be, for example, in a same layer structure as the first touch conductive layer or may be disposed in a same layer as the second touch conductive layer.

In some examples, as shown inFIG.4, the display panel of the second sub-edge region B22may include a base substrate30, and a composite insulation layer, a first panel crack detection line516, a low-voltage line426, a second connection electrode427, isolation dams (e.g., a first isolation dam513and a second isolation dam514), a first encapsulation layer441, a third encapsulation layer443, a first touch insulation layer301and a second touch insulation layer302which arranged on the base substrate30. The composite insulation layer may include a first insulation layer411to a third insulation layer413that are stacked on the base substrate30. The first panel crack detection line516may be arranged on the second insulation layer412, and may be disposed in a same layer as the second gate metal layer. The low-voltage line426may be disposed in a same layer as the first source-drain metal layer of the drive circuit layer42, and the second connection electrode427may be disposed in a same layer as the second source-drain metal layer of the drive circuit layer42. The cathode433may be electrically connected to the second connection electrode427through the first connection electrode512which may be electrically connected to the low-voltage line426through the second connection electrode427. The first isolation dam513is located on a side of the second isolation dam514close to the active region AA. The second isolation dam514may be formed by stacking a first dam foundation, a second dam foundation, a third dam foundation, and a fourth dam foundation. The first isolation dam513may be formed by stacking a second dam foundation, a third dam foundation, and a fourth dam foundation. The first dam foundation may be disposed in a same layer as the first planarization layer415, the second dam foundation may be disposed in a same layer as the second planarization layer416, the third dam foundation may be disposed in a same layer as the pixel definition layer434, and the fourth dam foundation may be disposed in a same layer as the isolation post511. However, this embodiment is not limited thereto.

In some examples, as shown inFIG.4, the display panel of the third sub-edge region B23may include a crack dam515arranged on the base substrate30, and edge ground traces35. The crack dam515is formed on the composite insulation layer, and may include a plurality of cracks which are arranged at intervals, and the cracks may expose the base substrate30. The first planarization layer415may cover the crack dam515. The edge ground traces35may be arranged on the first planarization layer415covering the crack dam515. The second touch insulation layer302may expose a portion of surfaces of the edge ground traces35. In some examples, an orthographic projection of the first touch insulation layer301on the base substrate30may not be overlapped with an orthographic projection of the edge ground traces35on the base substrate30. A boundary of the first touch insulation layer301may be located on a side of the edge ground traces35close the active region AA. The orthographic projection of the edge ground traces35on the base substrate30may be partially overlapped with an orthographic projection of the crack dam515on the base substrate30. However, this embodiment is not limited thereto. For example, the orthographic projection of the first touch insulation layer301on the base substrate30may be partially overlapped with an orthographic projection of the edge ground traces35on the base substrate30. In this example, the crack dam515in a concave-convex shape formed in the edge region B2is a film layer structure for avoiding an influence on the active region AA and the first sub-edge region B21during cutting of the display motherboard. The plurality of cracks arranged at intervals can not only reduce stresses on the active region AA and the first sub-edge region B21, but also cut off propagation of cracks towards a direction of the active region AA and the first sub-edge region B21.

In some examples, as shown inFIG.4, the edge ground traces35and the second touch conductive layer may be disposed in a same layer. However, this embodiment is not limited thereto. In some other examples, the edge ground traces may be disposed in a same layer as any conductive layer of the touch structure layer close to the base substrate.

In this exemplary embodiment, by arranging the edge ground traces35in the third sub-edge region B23of the peripheral region, the negative charges generated by the friction on the surface of the cover plate may be led out by using the edge ground traces35. Moreover, since the second touch conductive layer has a larger thickness and a smaller resistance than the first touch conductive layer, and the second touch conductive layer is closer to the cover plate than other conductive layers, most static electricity may be effectively led out by arranging the edge ground traces35to be in the same layer as the second touch conductive layer, thereby reducing a negative electric field formed inside the display panel and improving the illumination problem caused by the negative electric field.

In some examples, the orthographic projection of the edge ground traces35on the base substrate30may not be overlapped with an orthographic projection of other conductive layers on the base substrate30. By providing the edge ground traces35to avoid all the metal film layer layers below, electrostatic damage to metal film layers below the edge ground traces35can be prevented.

FIG.5is a partial enlarged view of a region S1inFIG.3. InFIG.5, positions of a gate drive electrode420and a plurality of traces (including, for example, a first ground trace331, a plurality of touch leads313, a guard line315, a plurality of first panel crack detection lines516, a plurality of second panel crack detection lines314, and edge ground traces35) in the edge region B2are briefly illustrated, and the rest of the structures are omitted.

In some examples, as shown inFIG.5, the first ground trace331may be located on a side of the plurality of touch leads313away from the active region AA, the guard line315may be located between the first ground trace331and the plurality of touch leads313, and the second panel crack detection lines314may be located on a side of the first ground trace331away from the guard line315and the plurality of touch leads313. An orthographic projection of the first ground trace331and the second panel crack detection lines314on the base substrate may be overlapped with an orthographic projection of the gate drive circuit420on the base substrate. An orthographic projection of the first panel crack detection lines516on the base substrate may be located between an orthographic projection of the edge ground traces35on the base substrate and the orthographic projection of the second panel crack detection lines314on the base substrate. A closest metal trace on a side of the orthographic projection of the edge ground traces35close to the active region AA may be a first panel crack detection line516. In some examples, the edge ground traces35and the first ground trace331may be electrically connected to a same ground pin in the bonding region or may be electrically connected to different ground pins. This embodiment is not limited thereto.

In some examples, as shown inFIG.5, a width of an edge ground trace35may be greater than a width of the first ground trace331. In this example, a width of a trace refers to a width of the trace on the display touch substrate formed after being cut by a cutting equipment. In some examples, a pitch L1between the edge ground traces35and the closest first panel crack detection line516may be about 65 microns to 150 microns, which may be, for example, about 120 microns. A pitch L2between the edge ground traces35and a closest second panel crack detection line314may be about 220 microns to 280 microns, which may be, for example, about 256 microns. However, this embodiment is not limited thereto.

FIG.6is a schematic diagram of planar positions of a display panel and an antenna structure according to at least one embodiment of the present disclosure.FIG.7is a schematic diagram of cross-sectional positions of a display panel and an antenna structure according to at least one embodiment of the present disclosure. InFIG.7, only a base substrate30, a display structure layer41, a touch structure layer31, a polarizer14, an optical adhesive layer15, and a cover plate16of a display panel10are illustrated, and other structures are omitted.

In some examples, as shown inFIG.6andFIG.7, the antenna structure50may be located on a side of the base substrate30of the display panel10away from the touch structure layer31. For example, the antenna structure50may be partially overlapped with the display panel10. An orthographic projection of the antenna structure50on the display panel10may be located in the edge region B2of the peripheral region. An overlapping region between the antenna structure50and the display panel10may be an antenna projection region500of the display panel10. For example, the antenna projection region500may be located in the edge region B2on the right side of the display panel10. In some examples, the antenna projection region500may be rectangular. For example, a length of the antenna projection region500may be about 100 mm (mm) to 140 mm, which may be, for example, about 122 mm, and a width of the antenna projection region500may be about 0.10 mm to 0.17 mm, which may be, for example, about 0.15 mm. The antenna projection region500may include an upper edge, a lower edge, a left edge, and a right edge, wherein the right edge of the antenna projection region500may be flush with a right edge of the display panel10. For example, the left edge of the antenna projection region500may be parallel to the right edge, and the upper edge may be parallel to the lower edge. An orthographic projection of an upper edge of the antenna structure50on the display panel10may coincide with the upper edge of the antenna projection region500, an orthographic projection of a lower edge of the antenna structure50on the display panel10may coincide with the lower edge of the antenna projection region500, an orthographic projection of a left edge of the antenna structure50on the display panel10may coincide with the left edge of the antenna projection region500, a right edge of the antenna structure50may not be overlapped with the display panel10, and in other words, a right portion of the antenna structure50may protrude from the right edge of the display panel10. However, this embodiment is not limited thereto. In some other examples, the orthographic projection of the right edge of the antenna structure50on the display panel10may coincide with the right edge of the antenna projection region500. In some other examples, the orthographic projection of the antenna structure50on the display panel10may be located in the edge region B2on the left side of the display panel10. In some examples, as shown inFIG.6, the non-antenna projection region501may surround the antenna projection region500on two sides of the second direction D2and on one side of the first direction D1. For example, a region within the third sub-edge region of the edge region B2other than the antenna projection region500may be the non-antenna projection region501.

In some examples, as shown inFIG.4andFIG.7, the display structure layer41has no metal film layer in the antenna projection region500, and the metal film layer in the antenna projection region500includes only the edge ground traces35. By arranging the edge ground traces35to bypass the antenna projection region500, or by reducing an overlapping area between the edge ground traces35and the antenna projection region500, metal film layers above the antenna structure50may be reduced, thereby improving the shielding and interference of the display panel10to antenna signals.

The structure of the edge ground traces is illustrated by several examples below. In the following example, an example that the edge ground traces and the second touch conductive layer being disposed in a same layer structure is taken. In this example, a direction along the active region AA toward the edge region B2may be a fourth direction D4, and a direction which is in a same plane as the fourth direction D4and intersects with the fourth direction D4is a fifth direction D5. For example, the fifth direction D5is in the same plane as the fourth direction D4, and the fifth direction D5may be perpendicular to the fourth direction D4. In the region S2and the region S3, the first direction D1may be parallel to the fourth direction D4, and the second direction D2may be parallel to the fifth direction D5.

FIG.8Ais a partial plan view of the region S2inFIG.6.FIG.8Bis a schematic diagram of the edge ground traces ofFIG.8A.FIG.9is a partial cross-sectional view along Q-Q′ direction inFIG.8A.FIG.8AandFIG.8Bshow partial structures of edge ground traces in a non-antenna projection region.FIG.10is a partial plan view of the edge ground traces of the region S3inFIG.6.FIG.11is partial plan view of the region S3inFIG.6before it is not subjected to fine cutting according to a second cutting path X2.FIG.10shows a structure of edge ground traces in an antenna projection region and an adjacent non-antenna projection region. The dotted line inFIG.10identifies a region as an antenna projection region500, and the region shown outside the antenna projection region500is the non-antenna projection region. The region500ainFIG.11may be a projection region corresponding to the antenna structure on the display motherboard. In some examples, the antenna structure may be assembled with the display panel after the display motherboard has been cut to obtain the display panel. This embodiment is not limited thereto.

In some examples, as shown inFIG.8A,FIG.8B,FIG.10, andFIG.11, the edge ground traces35may include an outer ring trace351and an inner ring trace352. The outer ring trace351may be located on a side of the inner ring trace352away from the active region. An edge of the outer ring trace351away from the inner ring trace352may be obtained after being cut according to the second cutting line X2. The outer ring trace351may include outer ring trace segments (e.g. outer ring trace segments3511and3512) located in the non-antenna projection region, an outer ring connection segment3513connected to adjacent outer ring trace segments, and an outer ring extension segment3514which is at least partially located in the antenna projection region500. The inner ring trace352may include inner ring trace segments (e.g. inner ring trace segments3521and3522) located in the non-antenna projection region and an inner ring connection segment3523connected with adjacent inner ring trace segments.

In some examples, as shown inFIG.8AandFIG.8B, the outer ring trace segment3512of the outer ring trace351and the inner ring trace segment3522of the inner ring trace352may be electrically connected to each other through a plurality of first connection traces353. The plurality of first connection traces353may be located between the outer ring trace segment3512of the outer ring trace351and the inner ring trace segment3522of the inner ring trace352. A single first connection trace353has one end electrically connected to the outer ring trace segment3512of the outer ring trace351, and has the other end electrically connected to the inner ring trace segment3522of the inner ring trace352. The outer ring trace segment3512of the outer ring trace351, the inner ring trace segment3522of the inner ring trace352, and the plurality of first connection traces353may be of an integral structure.

In some examples, as shown inFIG.8AandFIG.8B, a plurality of first openings3520may be formed on the inner ring trace segment3522of the inner ring trace352. The plurality of first openings3520may be arranged in one column along the fourth direction D4. The plurality of first openings3520may be arranged sequentially along the fifth direction D5perpendicular to the fourth direction D4. In some examples, an orthographic projection of the first openings3520on the base substrate may be rectangular. For example, a size of a first opening3520may be substantially the same as a dimension of a sub-pixel of the active region, and a spacing between adjacent first opening3520may be substantially the same as a spacing between adjacent sub-pixels of the active region. For example, a dimension of the orthographic projection of the first opening3520on the base substrate may be about 5 microns ×5 microns. However, this embodiment is not limited thereto. For example, the orthographic projection of the first openings on the base substrate may be in another shape, such as a circle or an ellipse. For another example, the plurality of first openings may be arranged in a plurality of columns (e.g., two or three columns) along the fourth direction. In this example, by providing the first openings on the inner ring trace segment, a direct contact area between the edge ground traces and the second touch insulation layer can be reduced, thereby reducing a risk of peeling of film layers.

In some examples, as shown inFIG.8AandFIG.8B, a resistance of a single first connection trace353may be about 10 ohms to 20 ohms, which may be, for example, about 10 ohms. An orthographic projection of the first connection trace353on the base substrate may be a zigzag trace. For example, a single first connection trace353may include a plurality of first extension segments353aand second extension segments353bwhich are connected sequentially. The first extension segments353amay extend along the fourth direction D4, and the second extension segments353bmay extend along the fifth direction D5. The second extension segments353b, the first extension segments353aand the second extension segment353bwhich are connected sequentially may form a circuitry. A plurality of circuities may be arranged sequentially along the fourth direction D4. A single first connection trace353may include a plurality of circuities. For example, the number of circuities of a single first connection trace353may be about 3 to 5. As shown inFIG.8B, a single first connection trace353may include three circuities. In some examples, a length of a first extension segment353a(i.e. a length in the fourth direction D4) may be less than a length of a second extension segment353b(i.e. a length in the fifth direction D5). A width of the first extension segment353a(i.e. a length in the fifth direction D5) may be substantially the same as a width of the second extension segment353b(i.e. a length in the fourth direction D4). For example, the width of the first extension segment353amay be about 3 microns to 5 microns, which may be, for example, about 5 microns. A pitch between adjacent second extension segments353bmay be about 3 microns to 5 microns, which may be, for example, about 5 microns. A pitch between a second extension segment353band an outer ring trace segment3512of an adjacent outer ring trace351, and a pitch between the second extension segment353band an inner ring trace segment3522of an adjacent inner ring trace352may be substantially the same as a pitch between the adjacent second extension segments353b. However, this embodiment is not limited thereto. For example, a length of the first extension segment of the first connection trace may be greater than a length of the second extension segment, and the first extension segment, the second extension segment, and the first extension which are connected sequentially may form one circuitry, a plurality of which may be arranged sequentially along the fifth direction. In this exemplary embodiment, the first connection trace is configured to electrically connect the outer ring trace segment of the outer ring trace and the inner ring trace segment of the inner ring trace, and the length of the first connection trace is extended by back several times of bending, so that the ground resistance may be increased, thereby increasing the resistance of the edge ground traces and improving an electrostatic protection effect.

In some examples, as shown inFIG.8AandFIG.8B, a plurality of anti-static capacitors354may be arranged between the outer ring trace segment3512of the outer ring trace351and the inner ring trace segment3522of the inner ring trace352. The anti-static capacitors354may be arranged within a spacing between adjacent first connection traces353. At least one anti-static capacitor354may include a first plate354aand a second plate354b. The first plate354aand the outer ring trace segment3512of the outer ring trace351may be of an integral structure. The second plate354bmay be located on a side of the first plate354aclose to the inner ring trace segment3522of the inner ring trace352. The first plate354amay be grounded, and the second plate354bmay be a dummy conductive structure. In this example, the outer ring trace segment3512of the outer ring trace351, the inner ring trace segment3522of the inner ring trace352, the first connection traces353, and the first plate354aof the anti-static capacitor354may be of an integral structure. The first plate354amay have a plurality of first comb portions facing the second plate354b, and the second plate354bmay have a plurality of second comb portions facing the first plate354a. A plurality of first comb portions and second comb portions may be interspersed with each other. In this way, an overlapping area between the two plates may be increased in a limited space, and a capacitance pitch may be reduced, thus increasing the capacitance. However, this embodiment is not limited thereto. In this example, by arranging the anti-static capacitors between the inner ring trace segment of the inner ring trace and the outer ring trace segment of the outer ring trace, the anti-static capacitor may be charged when instantaneous high-voltage static electricity passes, which plays a role in dividing voltage and improves a risk of electrostatic breakdown.

In some examples, as shown inFIG.10, the outer ring trace segments3511and3512may be located on opposite sides of the antenna projection region500along the fifth direction D5. The structures of the outer ring trace segment3511and the inner ring trace segment3521can be referred to as the structures between the outer ring trace segment3512and the inner ring trace segment3522, and thus will not be repeated here.

In some examples, as shown inFIG.10andFIG.11, a distance between the inner ring trace segment3521(or3522) of the inner ring trace352and the second cutting path X2may be less than a distance between the inner ring connection segment3523and the second cutting path X2. InFIG.11, the position where the second cutting path X2is located may form the right edge of the display panel.

In some examples, as shown inFIG.10, the antenna projection region500of the display panel may be rectangular, and the antenna projection region500may include an upper edge, a lower edge, a left edge and a right edge. The upper edge and the lower edge of the antenna projection region500may be substantially parallel, which may extend, for example, along the fourth direction D4, and the left edge and right edge may be substantially parallel, which may extend, for example, along the fifth direction D5. The left edge of the antenna projection region500may be located on a side of the right edge close to the active region. The right edge of the antenna projection region500may be flush with the right edge of the base substrate of the display panel.

In some examples, as shown inFIG.10, the inner ring connection segment3523is connected between the inner ring trace segments3521and3522. The inner ring connection segment3523, and the inner ring trace segments3521and3522may be of an integral structure. In the region S3, the inner ring trace segments3521and3522of the inner ring trace352may extend along the fifth direction D5, and the inner ring connection segment3523may be retracted inwardly along the opposite direction of the fourth direction D4, i.e. retracted towards a side close to the active region, so as to bypass the antenna projection region500.

In some examples, as shown inFIG.10, the inner ring connection segment3523may include a first connection segment3523a, a second connection segment3523b, and a third connection segment3523cwhich are connected sequentially. The first connection segment3523amay be connected to the inner ring trace segment3521, and the third connection segment3523cmay be connected to the inner ring trace segment3522. The second connection segment3523bis connected between the first connection segment3523aand the third connection segment3523c. The first connection segment3523amay extend along a sixth direction D6, the second connection segment3523bmay extend along the fifth direction D5, and the third connection segment3523cmay extend along a seventh direction D7. A clockwise angle between the first connection segment3523aand the second connection segment3523bmay be greater than 90 degrees and less than 180 degrees, and a clockwise angle between the second connection segment3523band the third connection segment3523cmay be greater than 90 degrees and less than 180 degrees. Among them, the sixth direction D6may intersect with the fifth direction D5and the fourth direction D4, and the seventh direction D7may intersect with all of the fourth direction D4, the fifth direction D5and the sixth direction D6, for example, the sixth direction D6may be perpendicular to the seventh direction D7. However, this embodiment is not limited thereto. In some other examples, the first connection segment3523aand the third connection segment3523cmay both extend along the fourth direction D4, such that the clockwise angle between the first connection segment3523aand the second connection segment3523bmay be about 90 degrees, and the clockwise angle between the second connection segment3523band the third connection segment3523cmay be about 90 degrees.

In some examples, as shown inFIG.10, the first connection segment3523a, the second connection segment3523b, and the third connection segment3523cof the inner ring connection segment3523may all be straight line segments. However, this embodiment is not limited thereto. In some other examples, the first connection segment and third connection segment of the inner ring connection segment may be broke line segments or arc segments.

In some examples, as shown inFIG.10, a width of the inner ring connection segment3523and a width of the inner ring trace segment3521(or3522) may be substantially the same. The inner ring connection segment3523may be provided with a plurality of first openings3520. The plurality of first openings3520may be arranged in one column along the fourth direction D4. An arrangement mode of the first opening in the inner ring connection segment may be the same as an arrangement mode of the first openings on the inner ring trace segment, and thus will not be repeated here. However, this embodiment is not limited thereto. In some other examples, the number of columns of first openings provided on the inner ring trace segment may be greater than the number of columns of first openings provided on the inner ring connection segment. For example, the plurality of first openings of the inner ring trace segment may be arranged in a plurality of columns, and the plurality of first openings of the inner ring connection segment may be arranged in one column.

In some examples, as shown inFIG.10andFIG.11, a distance between the outer ring trace segment3511(or3512) of the outer ring trace351and the second cutting path X2may be less than a distance between the outer ring connection segment3523and the second cutting path X2. Edges of the outer ring trace segments3511and3512away from the active region are obtained by being cut according to the second cutting path X2.

In some examples, as shown inFIG.10, the outer ring connection segment3513is connected between the outer ring trace segments3511and3512. The outer ring connection segment3513, and the outer ring trace segments3511and3512may be of an integral structure. In the region S3, the outer ring trace segments3511and3512of the outer ring trace351may extend along the fifth direction D5, and the outer ring connection segment3513may be retracted inwardly along the opposite direction of the fourth direction D4, i.e. retracted towards a side close to the active region, to bypass the antenna projection region500, so that the outer ring connection segment3523of the outer ring trace351is located on a side of the antenna projection region500close to the inner ring trace352.

In some examples, as shown inFIG.10, the outer ring connection segment3513may include a fourth connection segment3513a, a fifth connection segment3513b, and a sixth connection segment3513cwhich are connected sequentially. The fourth connection segment3513amay be connected to the outer ring trace segment3511, and the sixth connection segment3513cmay be connected to the outer ring trace segment3512. The fifth connection segment3513bis connected between the fourth connection segment3513aand the sixth connection segment3513c. The fourth connection segment3513amay extend along the sixth direction D6, the fifth connection segment3513bmay extend along the fifth direction D5, and the sixth connection segment3513cmay extend along the seventh direction D7. A clockwise angle between the fourth connection segment3513aand the fifth connection segment3513bmay be greater than 90 degrees and less than 180 degrees, and a clockwise angle between the fifth connection segment3513band the sixth connection segment3513cmay be greater than 90 degrees and less than 180 degrees. However, this embodiment is not limited thereto. In some other examples, the fourth connection segment3513aand the sixth connection segment3513cmay both extend along the fourth direction D4, such that the clockwise angle between the fourth connection segment3513aand the fifth connection segment3513bmay be about 90 degrees, and the clockwise angle between the fifth connection segment3513band the sixth connection segment3513cmay be about 90 degrees.

In some examples, as shown inFIG.10, the fourth connection segment3513a, the fifth connection segment3513b, and the sixth connection segment3513cof the outer ring connection segment3513may all be straight line segments. However, this embodiment is not limited thereto. In some other examples, the fourth connection segment and sixth connection segment of the outer ring connection segment may be broke line segments or arc segments. In this example, a trace form of the outer ring connection segment3513may be similar to a trace form of the inner ring connection segment3523. However, this embodiment is not limited thereto.

In some examples, as shown inFIG.10, a width of the outer ring connection segment3513may be less than a width of the outer ring trace segment3511(or3512). A width of the outer ring connection segment3513may be substantially the same as a width of the inner ring connection segment3523. For example, the width of the outer ring connection segment3513and the width of the inner ring connection segment3523may be about 15 microns to 25 microns, which may be, for example, about 20 microns. In this example, by providing the width of the outer ring connection segment and the width of the inner ring connection segment to be approximately the same, both electrical connection between adjacent outer ring trace segments and electrical connection between adjacent inner ring trace segments can be ensured, and space occupation can also be avoided.

In some examples, as shown inFIG.10, a plurality of second openings3510may be provided on the outer ring connection segment3513. The plurality of second openings3510may be arranged in one column along the fourth direction D4. A structure of the second openings3510may be referred to as the structure of the first openings3520, and the arrangement mode of the second openings3510on the outer ring connection segment3513may be the same as the arrangement mode of the first openings on the inner ring connection segment, and thus will not be repeated here. However, this embodiment is not limited thereto. In some other examples, the number of columns of first openings provided on the inner ring connection segment may be different from the number of columns of second openings provided on the outer ring connection segment.

In some examples, as shown inFIG.10, one end of each of the plurality of outer ring extension segments3514of the outer ring trace351is connected to the outer ring connection segment3513, and the other end may extend to an edge of the base substrate along the fourth direction D4. A plurality of outer ring extension segments3514and outer ring connection segments3513may be connected to form a comb-like structure. A plurality of outer ring extension segments3514may be arranged sequentially between outer ring trace segments3511and3512along the fifth direction D5. Shapes and dimensions of the plurality of outer ring extension segments3514may be substantially the same. For example, an orthographic projection of a single outer ring extension segment3514on the base substrate may be rectangular. However, this embodiment is not limited thereto. In some other examples, the shapes or dimensions of the plurality of outer ring extension segments may be different.

In some examples, as shown inFIG.10, a width F1of the outer ring trace segment3511(or3512) of the outer ring trace351may be about 50 microns to 70 microns, which may be, for example, about 60 microns. A distance F2between the outer ring connection segment3513of the outer ring trace352and an edge of the display panel may be about 130 microns to 170 microns, which may be, for example, about 150 microns. A distance F3between adjacent outer ring extension segments3514may be about 1500 microns to 2300 microns, which may be, for example, about 2000 microns. A distance between an outer ring extension segment3514and an adjacent outer ring trace segment3511(or3512) may be approximately the same as a distance between the adjacent outer ring extension segments. A length of at least one outer ring extension segment3514along the fourth direction D4may be substantially the same as a distance between the outer ring connection segment3513and the edge of the display panel. A length F4of at least one outer ring extension segment3514along the fifth direction D5may be about 130 microns to 170 microns, which may be, for example, about 150 microns. A distance F5between the outer ring connection segment3513of the outer ring trace351and the inner ring connection segment3523of the inner ring trace352may be about 30 microns to 40 microns, which may be, for example, about 35 microns. However, this embodiment is not limited thereto.

In some examples, as shown inFIG.11, the outer ring trace segment may be obtained by cutting off a portion of an outer ring metal layer361along the second cutting path X2, and the outer ring extension segments3514may be obtained by cutting off a portion of the outer ring metal layer361along the second cutting path X2. Among them, a width F7of the portion of the outer ring metal layer361which is cut off to form the outer ring trace segment may be about 60 microns to 80 microns, which may be, for example, about 70 microns. A width F8of the portion of the outer ring metal layer361which is cut off to form the outer ring extension segment may be about 50 microns to 70 microns, which may be, for example, about 60 microns.

In some examples, as shown inFIG.10, the fifth connection segment3513bof the outer ring connection segment3513and the second connection segment3523bof the inner ring connection segment3523may be electrically connected through a plurality of second connection traces355. Only two second connection traces355are illustrated inFIG.11A. The plurality of second connection traces355may be located between the outer ring connection segment3513of the outer ring trace351and the inner ring connection segment3523of the inner ring trace352. A single second connection trace355has one end electrically connected to the outer ring connection segment3513of the outer ring trace351, and has the other end electrically connected to the inner ring connection segment3523of the inner ring trace352. The outer ring connection segment3513of the outer ring trace351, the inner ring connection segment3523of the inner ring trace352and the plurality of second connection traces355may be of an integral structure. A resistance of the single second connection trace355and a resistance of a single first connection trace353may be approximately the same, which may be, for example, about 10 ohms. By arranging the resistances of the second connection trace and the first connection trace to be approximately the same, uniformity of the effect of leading out the electrostatic around the display panel can be ensured.

In some examples, as shown inFIG.10, an orthographic projection of the second connection trace355on the base substrate may be a zigzag trace. A length F6of the second connection trace355along the fifth direction D5may be about 120 microns to 150 microns, which may be, for example, about 135 microns. In this exemplary embodiment, the second connection trace is configured to electrically connect the outer ring connection segment of the outer ring trace and the inner ring connection segment of the inner ring trace, and a length of the second connection trace is extended by several times of bending, so that the ground resistance may be increased, thereby increasing the resistance of the edge ground traces and improving an electrostatic protection effect.

In some examples, the number of the first connection traces353and that of the second connection traces355may be matched according to the number of total resistance and capacitance of the edge ground traces to avoid providing too many connection traces, which leads to introduction of external charges due to too small parallel resistance, invalidating an Electric-Static Discharge (ESD for short) test, or providing too few connection traces, which leads to the circuit being burned out and invalid by an instantaneous ESD surge current due to process risk. In some examples, the total number of first connection traces and second connection traces may be less than or equal to 40. For example, the total number of the first connection traces and the second connection traces may be about 20 to 40, such as about 6, 19 or 40.

FIG.12is a schematic diagram of an arrangement of connection traces according to at least one embodiment of the present disclosure. In some examples, as shown inFIG.12, the edge ground traces may include nineteen connection traces. The nineteen connection traces may be arranged in the upper, left and right edge regions, respectively. Among them, five first connection traces353may be arranged in the upper edge region, seven first connection traces353may be arranged in the left edge region, respectively, and one first connection trace353and six second connection traces355may be arranged in the right edge region, respectively. However, this embodiment is not limited thereto. For example, the upper, left and right edge regions may have two connection traces, respectively. For another example, 10 connection traces may be arranged in the upper edge region, and 15 connection traces may be arranged in the left edge region and the right edge region, respectively.

In some examples, arrangement positions of the connection traces in the left edge region and right edge region may be symmetrical with respect to a centerline of the display panel in the first direction D1, and the arrangement positions of the connection traces in the upper edge region may be symmetrical with respect to the centerline of the display panel in the first direction D1. However, this embodiment is not limited thereto. In this exemplary implementation, by controlling the number of connection traces, it is possible to increase the resistance of the edge ground traces and reduce a risk of electrostatic breakdown of adjacent metal film layers.

In some examples, as shown inFIG.9, an orthographic projection of the second touch insulation layer302on the base substrate30may be partially overlapped with an orthographic projection of the edge ground traces on the base substrate30. For example, the second touch insulation layer302may cover the inner ring trace352, and not cover the outer ring trace351. The edge of the second touch insulation layer302may be overlapped with the anti-static capacitor354. In this example, by using a perforated design on the outer ring connection segment3512between the inner ring trace352and the outer ring trace351, it is possible to avoid the edge ground traces from being in direct contact with the second touch insulation layer302over a large area, and it is possible to avoid peeling of the film layer.

In some examples, as shown inFIG.10, the overlapping area between the edge ground traces and the antenna projection region500may be less than or equal to 7% of the total region of the antenna projection region500. In this example, a proportion of an overlapping area between a plurality of outer ring extension segments of the outer ring trace and the antenna projection region in the antenna projection region may be less than 7%. In some examples, a proportion of the overlapping area between the edge ground traces and the antenna projection region in the antenna projection region may be less than a proportion of the overlapping area between the edge ground traces and the non-antenna projection region to the non-antenna projection region. By controlling the area of the edge ground traces in the antenna projection region, an interference effect on the antenna structure can be reduced and the effect of leading out of the electrostatic can be ensured.

FIG.13is another partial plan view of the edge ground traces of the region S3inFIG.6. In some examples, as shown inFIG.13, an orthographic projection of an outer ring extension segment3514of the outer ring trace351on the base substrate may be T-shaped. A single outer ring extension segment3514may include a first outer ring extension portion3514aand a second outer ring extension portion3514bconnected to each other. The first outer ring extension portion3514amay be located on a side of the second outer ring extension portion3514bclose to the inner ring trace352. The first outer ring extension portion3514amay be electrically connected to the outer ring connection segment3513. The second outer ring extension portion3514bhas one end electrically connected to the firstouter ring extension portion3514a, and the other end extending to an edge of the display panel. A length of the first outer ring extension portion3514aalong the fifth direction D5may be smaller than a length of the second outer ring extension portion3514balong the fifth direction D5. In this example, by providing a T-shaped outer ring extension segment, a larger length of the outer ring extension segment can be retained along the edge of the display panel, thereby facilitating leading out of edge charges of the display panel.

In some examples, as shown inFIG.13, a length F14of the first outer ring extension portion3514aalong the fifth direction D5may be about 130 microns to 170 microns, which may be, for example, about 150 microns. A distance F13between adjacent second outer ring extension portions3514bmay be about 900 microns to 1100 microns, which may be, for example, about 1000 microns. A length of the second outer ring extension portion3514balong the fourth direction D4may be approximately the same as a width of the outer ring trace segment3511. For example, the length F12of the second outer ring extension portion3514balong the fourth direction D4may be about 50 microns to 70 microns, which may be, for example, about 60 microns, and a length F11along the fifth direction D5may be about 1000 microns to 1300 microns, which may be, for example, about 1150 microns.

The remaining structures of the edge ground traces of this embodiment may be described with reference to the foregoing embodiments, and thus will not be described here.

FIG.14is another partial plan view of the edge ground traces of the region S3inFIG.6. In some examples, as shown inFIG.14, outer ring trace may include outer ring trace segments (e.g. outer ring trace segments3511and3512) located in non-antenna projection region, an outer ring connection segment3513at least partially located in antenna projection region500, and a plurality of outer ring extension segments3514located in antenna projection region500.

In some examples, as shown inFIG.14, the outer ring connection segment3513may extend along the fifth direction D5. In the region S3, the outer ring connection segment3513may be a straight line segment. In some other examples, the outer ring connection segment may be a broke line segment or a curve segment. A pitch F15between the outer ring connection segment3513and the inner ring connection segment3523may be about 80 microns to 100 microns, which may be, for example, 90 microns. A width of the outer ring connection segment3513and a width of the inner ring connection segment3523may be substantially the same, which may, for example, about 20 microns. A distance between a side of the outer ring connection segment3513away from an edge of the display panel and the edge of the display panel may be substantially the same as a distance between a side of the outer ring trace segment3511(or3512) away from the edge of the display panel. In other words, the side of the outer ring connection segment3513away from the edge of the display panel may be substantially flush with the side of the outer ring trace segment3511(or3512) away from the edge of the display panel. However, this embodiment is not limited thereto.

In some examples, as shown inFIG.14, each of the plurality of outer ring extension segments3514is connected to the outer ring connection segment3513, and the other end may extend to the edge of the display panel. For example, a plurality of outer ring extension segments3514and outer ring connection segments3513may be connected to form a comb-like structure. For example, a length F17of a single outer ring extension segment3514along the fifth direction D5may be about 130 microns to 170 microns, which may be, for example, about 150 microns, and a spacing F18between adjacent outer ring extension segments3514may be about 1800 microns to 2200 microns, which may be, for example, about 2000 microns. However, this embodiment is not limited thereto.

In some examples, as shown inFIG.14, the outer ring connection segment3513and the inner ring connection segment3523may be electrically connected through a plurality of second connection traces355. Only two second connection traces355are illustrated inFIG.14. The plurality of second connection traces355may be located between the outer ring connection segment3513of the outer ring trace351and the inner ring connection segment3523of the inner ring trace352. One end of a single second connection trace355is electrically connected to the outer ring connection segment3513of the outer ring trace351, and the other end of the second connection trace355is electrically connected to the inner ring connection segment3523of the inner ring trace352. The outer ring connection segment3513of the outer ring trace351, the inner ring connection segment3523of the inner ring trace352and the plurality of second connection traces355may be of an integral structure. At least a portion of the single second connection trace355may be located in the antenna projection region500. A resistance of the single second connection trace355and a resistance of a single first connection trace353may be approximately the same, which may be, for example, about 10 ohms. An orthographic projection of the second connection trace355on the base substrate may be a zigzag trace. A length F16of the second connection trace355along the fifth direction D5may be about 100 microns to 120 microns, which may be, for example, about 109 microns. In this exemplary embodiment, the second connection trace is configured to electrically connect the outer ring connection segment of the outer ring trace and the inner ring connection segment of the inner ring trace, and a length of the second connection trace is extended by several times of bending, so that the ground resistance may be increased, thereby increasing the resistance of the edge ground traces and improving an electrostatic protection effect.

The outer ring connection segment and the outer ring extension segments of the edge ground traces of this example are located in the antenna projection region, and an area of the edge ground traces located in the antenna projection region is smaller than an area of the edge ground traces located in the non-antenna projection region, so that antenna signals will not be shielded by metals over a large area, and moreover, the outer ring connection segment and the inner ring trace are electrically connected by the second connection traces, so that static electricity can be better led out and the static electricity damages caused in ESD test can be prevented.

The remaining structures of the edge ground traces of this embodiment may be described with reference to the foregoing embodiments, and thus will not be described here.

FIG.15is another partial plan view of the edge ground traces of the region S3inFIG.6. In some examples, as shown inFIG.15, the outer ring trace351may include outer ring trace segments3511and3512located in non-antenna projection region. In this example, the outer ring trace351is not overlapped with the antenna projection region500, and the outer ring trace segments3511and3512of the outer ring trace351may be disconnected in the antenna projection region500. A distance F19between the inner ring connection segment3523of the inner ring trace352and an edge of the display panel may be about 40 microns to 50 microns, which may be, for example, about 45 microns. The antenna projection region is avoided by inwardly retracting a side of the inner ring trace352towards the active region side. In this example, the inner ring trace is retracted inwardly for avoiding the antenna projection region and the outer ring trace is disconnected for avoiding the antenna projection region, so that there is no metal film layer in the antenna projection region, and the edge ground traces are not overlapped with the antenna projection region, thereby reducing the shielding and interference of the edge ground traces to antenna signals and ensuring the performance of the antenna structure. In the non-antenna projection region, the inner ring trace352and the outer ring trace351may be electrically connected through the first connection traces, thereby ensuring that negative charges generated on the surface of the cover plate of the display panel may be led out, blocking the electrostatic conduction path, reducing the negative electric field formed inside the display panel, and improving the illumination of the display structure layer due to the negative electric field.

The remaining structures of the edge ground traces of this embodiment may be described with reference to the foregoing embodiments, and thus will not be described here.

FIG.16is another partial plan view of the edge ground traces of the region S3inFIG.6. In some examples, as shown inFIG.16, the outer ring trace351may include outer ring trace segments (e.g. outer ring trace segments3511and3512) and an outer ring connection segment3513connected to adjacent outer ring trace segments. The outer ring trace segments3511and3512, and the outer ring connection segment3513may be located in the non-antenna projection region. In this example, the outer ring trace351is not overlapped with the antenna projection region500, and the outer ring trace segments3511and3512of the outer ring trace351may be disconnected in the antenna projection region500, which are connected through the outer ring connection segment3513of the non-antenna projection region. A width of the outer ring connection segment3513may be smaller than a width of an outer ring trace segment, and may be substantially the same as a width of the inner ring connection segment3523. The outer ring connection segment3513and the inner ring connection segment3523may be electrically connected through the plurality of second connection traces355.

In this example, the inner ring trace and the outer ring trace are retracted inwardly for avoiding, so that there is no metal film layer in the antenna projection region, and the edge ground traces are not overlapped with the antenna projection region, thereby reducing the shielding and interference of the edge ground traces to antenna signals and ensuring the performance of the antenna structure. In the non-antenna projection region, the inner ring trace and the outer ring trace may be electrically connected through the first connection trace and the second connection trace, thereby ensuring that negative charges generated on the surface of the cover plate of the display panel can be led out, blocking the electrostatic conduction path, reducing the negative electric field formed inside the display panel, and improving the illumination of the display structure layer due to the negative electric field.

The remaining structures of the edge ground traces of this embodiment may be described with reference to the foregoing embodiments, and thus will not be described here.

In the display panel according to this embodiment, by arranging edge ground traces and making the edge ground traces partially or completely avoid the antenna projection region, the shielding and interference of the display panel to antenna signals may be reduced on the basis of ensuring that the negative charges generated on the surface of the cover plate of the display panel are led out to ensure the display effect of the display panel, thereby ensuring the performance of the antenna structure.

The present disclosure further provides a display panel, including a display panel and an antenna structure. The display panel includes an active region and an edge region located on at least one side of the active region. The edge region includes an antenna projection region and a non-antenna projection region located on at least one side of the antenna projection region. The active region of the display panel includes a base substrate, and a display structure layer and a touch structure layer arranged sequentially on the base substrate. The edge region of the display panel includes touch leads and edge ground traces which are arranged on the base substrate, wherein the edge ground traces are located on a side of the touch leads away from the active region. The touch leads and the edge ground traces are at least partially arranged on the same layer. An orthographic projection of the antenna structure on the display panel is overlapped with the antenna projection region of the display panel. An overlapping area between the edge ground traces and the antenna projection region is smaller than an overlapping area between the edge ground traces and the non-antenna projection region.

In some exemplary implementations, the antenna structure may be located on a side of the base substrate of the display panel away from the touch structure layer.

In some exemplary implementations, a portion of the edge ground traces located on a side of the antenna projection region close to the active region are first traces, and a portion of the edge ground traces located on a side of the non-antenna projection region close to the active region are second traces. A distance between an edge of a side of the first traces close to the active region and an edge of the base substrate is greater than a distance between an edge of a side of the second traces close to the active region and the edge of the base substrate.

The structure of the display panel according to this embodiment may be referred to descriptions of the aforementioned embodiments, and thus will not be repeated here.

In the display panel according to this embodiment, by arranging the edge ground traces on a side of the touch leads away from the active region and making the edge ground traces partially or completely avoid the antenna projection region, the shielding and interference of the display panel to the antenna signal can be reduced on the basis of ensuring that the negative charges generated on the surface of the cover plate of the display panel are led out to ensure the display effect of the display panel, thereby ensuring the performance of the antenna structure.

FIG.17is a schematic diagram of a display device according to at least one embodiment of the present disclosure. As shown inFIG.17, this embodiment provides a display device91, including the display panel910of any of the aforementioned embodiments and an antenna structure920. An orthographic projection of the antenna structure920on the display panel910may be overlapped with the antenna projection region of the display panel910. In some examples, the display panel910may be an OLED display panel with an integrated touch structure. The display device91may be: any product or component with a display and touch function, such as a mobile phone, a tablet computer, a television, a display, a laptop, a digital photo frame, or a navigator. In some exemplary implementations, the display device91may be a wearable display device, for example, which may be worn on a human body in some manners. For example, the display device91may be a smart watch, a smart bracelet, and the like. However, this embodiment is not limited thereto.

The drawings of the present disclosure only involve structures involved in the present disclosure, and other structures may refer to conventional designs. The embodiments of the present disclosure and features in the embodiments may be combined to each other to obtain new embodiments if there is no conflict.

Those of ordinary skills in the art should understand that modifications or equivalent replacements may be made to the technical solutions of the present disclosure without departing from the essence and scope of the technical solutions of the present disclosure, and shall all fall within the scope of the claims of the present disclosure.