DISPLAY PANEL AND DISPLAY DEVICE

A display panel and a display device are provided. The display panel is divided into an active area and a non-active area. The non-active area is divided into a first area, a flexible area and a second area sequentially arranged towards the active area. The display panel includes a substrate, an array layer, a touch wiring and a first signal wiring. The touch wiring includes a first touch lead, a second touch lead and a third touch lead that are electrically connected. The first touch lead is at least partially arranged in the array layer on a side of a first via hole group away from the flexible area. This display panel is developed into an in-cell touch panel.

The present application claims the priority to Chinese Patent Application No. 202310898696.3, titled “DISPLAY PANEL AND DISPLAY DEVICE”, filed on Jul. 20, 2023 with the China National Intellectual Property Administration, which is incorporated herein by reference in its entirety.

FIELD

The present disclosure relates to the field of display, and in particular to a display panel, and a display device including the display panel.

BACKGROUND

As the touchscreen technology advances, increasing display panels have developed into touch panels. That is, these display panels are sensitive to touch on themselves in addition to display information. At present, out-cell touch panels are fairly common while in-cell touch panels are rare.

SUMMARY

The following embodiments are provided according to the present disclosure, to solve the above problem.

A display panel is provided. The display panel is divided into an active area and a non-active area. The non-active area is divided into a first area, a flexible area and a second area, the first area. The flexible area and the second area are sequentially arranged towards the active area. The display panel includes a substrate, an array layer arranged on a side of the substrate, a touch wiring and a first signal wiring. The touch wiring includes a first touch lead, a second touch lead and a third touch lead that are electrically connected. The first touch lead is at least partially arranged in the first area. The second touch lead is at least partially arranged in the flexible area. The third touch lead is at least partially arranged in the second area. The first signal wiring is arranged in the array layer and includes a first segment and a second segment that are electrically connected. The first segment is at least partially arranged in the first area. The second segment is at least partially arranged in the flexible area. The first segment is arranged in a different layer from the second segment and is electrically connected to the second segment through a first via hole group. The first touch lead is at least partially arranged in the array layer on a side of the first via hole group away from the flexible area.

A display device is further provided. The display device includes the display panel described above.

DETAILED DESCRIPTION

The embodiments of the present disclosure are described clearly and completely in conjunction with the drawings in the embodiments of the present disclosure hereinafter. It is apparent that only some embodiments rather than all the embodiments of the present disclosure are described herein.

Various details are set forth in the following description to facilitate a full understanding of the present disclosure. In fact, the present disclosure may be implemented in other ways different from those described herein. Therefore, the present disclosure is not limited to the embodiments disclosed below.

The present disclosure is described in detail in conjunction with the drawings. For ease of illustration, sectional views of the device structure is partially enlarged instead of draw to scale in the embodiments of the present disclosure. The drawings are merely illustrative, and thus are not intended to limit the protection scope of the present disclosure. In addition, spatial dimensions of length, width and depth should be taken into account in practice.

As described in the BACKGROUND, out-cell touch panels are fairly common while in-cell touch panels are rare at present.

In view of this, a display panel is provided according to embodiments of the present disclosure.FIG.1is a schematic diagram illustrating the display panel according to an embodiment of the present disclosure.FIG.2is a schematic diagram illustrating the display panel when being bent according to an embodiment of the present disclosure. In the embodiments, the display panel is divided into an active area100and a non-active area200.

The non-active area200includes a first area201, a flexible area202, and a second area203.

The first area201, the flexible area202and the second area203are arranged sequentially towards the active area. That is, the non-active area200includes the first area201, the flexible area202, and the second area203that are arranged in a direction X from the non-active area200towards the active area100. The first area201is arranged on a side of the flexible area202away from the active area100. The flexible area202is arranged on a side of the second area203away from the active area100.

FIG.3is a sectional view of the display panel when cut along a line AA′ as shown inFIG.1.FIG.4is a sectional view of the display panel along a line BB′ as shown inFIG.1. The display panel according to the embodiments of the present disclosure includes a substrate10, an array layer20, a touch wiring30and a first signal wiring40. The array layer20is arranged on a side of the substrate10. The touch wiring30includes a first touch lead31, a second touch lead32, and a third touch lead33that are electrically connected. The first touch lead31is at least partially arranged in the first area201. The second touch lead32is at least partially arranged in the flexible area202. The third touch lead33is at least partially arranged in the second area203. The first signal wiring40is arranged in the array layer20, and includes a first segment41and a second segment42that are electrically connected. The first segment41is at least partially arranged in the first area201. The second segment42is at least partially arranged in the flexible area202. The first segment41and the second segment42are arranged in different layers and are electrically connected through a first via hole43. It should be noted that in the embodiments, the first area201is arranged on a side of the first via hole43away from the active area100. The flexible area202is arranged on a side of the first via hole43facing the active area100.

In some embodiments, as shown inFIG.4, the first signal wiring40includes a third segment44arranged in the second area203. The third segment44is electrically connected to the second segment42through a third via hole45. The flexible area202is arranged between the first via hole43and the third via hole45.

From the above description, it can be seen that the display panel according to the embodiment of the present disclosure includes the touch wiring. That is, the display panel embedded inside with the touch wiring functions as a touch panel . In one embodiment, on the side of the first via hole away from the active area, the first touch lead is at least partially arranged in the array layer, that is, a part of the first touch lead arranged in the first area is at least partially arranged in the array layer, and the touch wiring is at least partially arranged in the array layer.

As shown inFIG.4, in some embodiments, the array layer includes the signal wiring, multiple pixel circuits arranged in an array, and multiple display units205arranged in an array. Each of the pixel circuits includes a thin film transistor204. The thin film transistor204includes a gate g, a source s, and a drain d. The display unit205includes an anode layer, a light-emitting layer and a cathode layer that are arranged along a direction Z perpendicular to a plane where the substrate10is located. The anode layer is electrically connected to the drain d of the thin film transistor204. One thin film transistor204corresponds to at least one display unit205, to control a display state of the display unit205. That is, the display units are separately controlled.

As shown inFIG.4, in some embodiments, the array layer20includes a first metal layer21, a second metal layer22, and a third metal layer23that are arranged along the direction Z perpendicular to the plane where the substrate10is located. A first insulation layer24is arranged between the first metal layer21and the second metal layer22. A second insulation layer25is arranged between the second metal layer22and the third metal layer23.

In the embodiments, the gate g of the thin film transistor204is arranged in the first metal layer21, and the source s and the drain d of the thin film transistor204are arranged in the second metal layer22.

In some embodiments of the present disclosure, the first metal layer includes a molybdenum layer. The second metal layer includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked. The third metal layer includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked. For example, the first metal layer has a thickness of 3000 angstroms. In the second metal layer, the first titanium metal layer, the aluminum metal layer, and the second titanium metal layer have a thickness of 500 angstroms, a thickness of 7000 angstroms, and a thickness of 400 angstroms, respectively. That is, in the second metal layer, the aluminum metal layer has the thickness of 7000 angstroms, the first titanium metal layer arranged on a side of the aluminum metal layer facing the substrate has the thickness of 500 angstroms, and the second titanium metal layer arranged on a side of the aluminum metal layer away from the substrate has the thickness of 400 angstroms. In the third metal layer, the first titanium metal layer, the aluminum metal layer, and the second titanium metal layer have a thickness of 600 angstroms, a thickness of 6500 angstroms, and a thickness of 400 angstroms, respectively.

That is, in the third metal layer, the aluminum metal layer has the thickness of 6500 angstroms, the first titanium metal layer arranged on a side of the aluminum metal layer facing the substrate has the thickness of 600 angstroms, and the second titanium metal layer arranged on a side of the aluminum metal layer away from the substrate has the thickness of 400 angstroms. However, the thickness of each of the layers is not limited in the present disclosure but depends on the situations.

Based on the above embodiments, as shown inFIG.4, in some embodiments of the present disclosure, the array layer20further includes a fourth metal layer26arranged between the first metal layer21and the second metal layer22. The first insulation layer24is arranged between the first metal layer21and the fourth metal layer26. A third insulation  layer27is provided between the fourth metal layer26and the second metal layer22.

As shown inFIG.4, the array layer20further includes a first planarization layer arranged between the third metal layer23and the anode layer, and a pixel definition layer arranged between the anode layer and the cathode layer. The pixel definition layer is provided with multiple openings, and the light-emitting layer is arranged in the openings.

Based on the above embodiments, in some embodiments of the present disclosure, the display panel further includes a sealing layer50for encapsulating the active area100of the display panel, to protect the display units in the display panel from water and oxygen. In some embodiments of the present disclosure, the sealing layer50includes a first sealing layer51, a second sealing layer52, and a third sealing layer53that are arranged along the direction perpendicular to the plane where the substrate10is located. The first sealing layer51and the third sealing layer53are inorganic for watertight and airtight purposes, and the second sealing layer52is organic.

In some embodiments of the present disclosure, the display panel further includes a retaining wall structure arranged in the second area. The retaining wall structure includes a first retaining wall and a second retaining wall that are arranged along the direction X from the non-active area200towards the active area100. The second retaining wall is configured to locate the second sealing layer52. The first retaining wall is configured to prevent the second sealing layer52from extending into the flexible area.

Based on any one of the above embodiments, in some embodiments of the present disclosure, as shown inFIG.5, the signal wiring includes a first power supply signal wiring21(PVEE), a gate driving signal wiring22, a second power supply signal wiring23(PVDD), a data wiring24, and the like. In some embodiments, the gate driving signal wiring22is a clock signal wiring or a low-level signal wiring that is electrically connected to a gate driving circuit25, which is not limited in the present disclosure but depends on the situations.

As shown inFIG.5, the display panel further includes multiple touch electrodes60arranged in the active area100. The touch electrodes60are configured to sense a touch.

As shown inFIG.4, in some embodiments of the present disclosure, the multiple touch electrodes60are arranged on a side of the sealing layer50away from the substrate10, which is not limited in the present disclosure. In other embodiments of the present disclosure, the multiple touch electrodes are arranged on a side of the sealing layer facing the substrate, depending on the situations.

FIG.6is a sectional view of the display panel cut along a line DD′ as shown inFIG.5. In some embodiments of the present disclosure, the multiple touch electrodes are divided into first touch electrodes61and second touch electrodes62. In some embodiments of the present disclosure, the first touch electrodes61and the second touch electrodes62are arranged in a same layer. In the first direction X, one first touch electrode61is directly electrically connected to another first touch electrode61. In the second direction Y, one second touch electrode62is electrically connected to another second touch electrode62through a bridge63.

In an embodiment of the present disclosure, each of the touch electrodes includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked, and have a thickness of 500 angstroms, a thickness of 3000 angstroms, and a thickness of 500 angstroms, respectively. That is, in the touch electrode, the aluminum metal layer has the thickness of 3000 angstroms, the first titanium metal layer arranged on a side of the aluminum metal layer facing the substrate has the thickness of 500 angstroms, and the second titanium metal layer arranged on a side of the aluminum metal layer away from the substrate has the thickness of 500 angstroms. The bridge also includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked and have a thickness of 500 angstroms, a thickness of 1500 angstroms, and a thickness of 700 angstroms, respectively. That is, in the bridge, the aluminum metal layer has the thickness of 1500 angstroms, the first titanium metal layer arranged on a side of the aluminum metal layer facing the substrate has the thickness of 500 angstroms, and the second titanium metal layer arranged on a side of the aluminum metal layer away from the substrate has the thickness of 700 angstroms. However, the thickness of each of the layers is not limited in the present disclosure but depends on the situations.

Based on any one of the above embodiments, in some embodiments of the present disclosure, the first signal wiring is the data wiring, which is not limited in the present disclosure. In other embodiments of the present disclosure, the first signal wiring is the second power supply signal wiring or the gate driving signal wiring, depending on the situations. The display panel according to the embodiments of the present disclosure is described below with the first signal wiring as the data wire.

Reference is made toFIG.7, which shows the lower margin of the display panel as shown inFIG.5being partially enlarged. The first signal wiring includes a first signal wire401and a second signal wire402. The first via hole group includes a first via hole431and a second via hole432. The first signal wire401includes a first segment4011and a second segment4012that are electrically connected through the first via hole431. The second signal wire402includes a first segment4021and a second segment4022that are electrically connected through the second via hole432. It should be noted that althoughFIG.7illustrates an example that the first signal wiring is the data wiring, which is not limited in the present disclosure. In other embodiments of the present disclosure, the first signal wiring is another signal wiring, depending on the situations. In some embodiments of the present disclosure, the first signal wiring is the data wiring, and the display panel includes multiple data wires. Each of the multiple data wires includes a first segment and a second segment that are arranged in different layers. The first segments are electrically connected to the corresponding second segments through respective via holes. For example, the multiple data wires include a first data wire (i.e., the first signal wire401) and a second data wire (i.e., the second signal wire402). The first data wire includes the first segment4011and the second segment4012that are electrically connected through the first via hole431. The second data wiring includes the first segment4021and the second segment4022that are electrically connected through the second via hole432.

In some embodiments of the present disclosure, as shown inFIG.7, the first via hole431and the second via hole432are arranged on a same straight line. The straight line is parallel to a fold of the flexible area202. That is, in the first direction X, a distance from the first via hole431to the fold of the flexible area202is equal to a distance from the second via hole432to the fold of the flexible area202. In other embodiments of the present disclosure, as shown inFIG.8, the first via hole431and the second via hole432are arranged in a same straight line. The straight line intersects with the fold of the flexible area202. That is, in the first direction X, the distance from the first via hole431to the fold of the flexible area202is different from the distance from the second via hole432to the fold of the flexible area202. This is not limited in the present disclosure but depends on the situation.

Reference is made toFIG.9, which is a sectional view of the lower margin of the display panel as shown inFIG.8being partially enlarged. In some embodiments, the first via hole431and the second via hole432are arranged in a same straight line, and the straight line intersects with the fold of the flexible area202. A minimum distance from the first via hole431to the second via hole432in the first direction X is L. The first via hole is L1 in diameter, where 0≤L≤5L1. Therefore, a distance from the first via hole431corresponding to the first sub-signal wire401to the second via hole432corresponding to the second sub-signal wire402is short in the first direction. That is, the via hole for electrically connecting the first and second segments of one data wire is arranged at a short distance from the via hole for electrically connecting the first and second segments of another data wire.

It should be noted that in practice a diameter of the first via hole varies in the direction perpendicular to the plane where the substrate is located. In some embodiments of the present disclosure, the diameter of the first via hole is a longest chord of the first via hole, as shown inFIG.9, which is not limited in the present disclosure. In other embodiments of the present disclosure, the diameter of the first via hole is a middle chord of the first via hole or an average of chords of the first via hole in the first direction, depending on the situations.

Based on any one of the above embodiments, in some embodiments of the present disclosure, as shown inFIG.10, the display panel further includes a second planarization layer70covering the flexible area202and the first area201, and a protection layer80arranged on a side of the second planarization layer70away from the substrate10. The protection layer80covers the flexible area202and at least partially covers the first area201, to remove stresses of the flexible area of the display panel to a certain extent, to prevent the metal wires arranged in the flexible are of the display panel from being broken. In some embodiments of the present disclosure, the protection layer80completely covers the flexible area202and the first area201, as shown inFIG.10. In other embodiments of the present disclosure, the protection layer80covers the flexible area202and partially covers the first area201, as shown inFIG.11. This is not limited in the present disclosure but depends on the situations. Reference is made toFIG.12, which is a sectional view of the first area201, the flexible area202, and the second area203in the display panel as shown inFIG.11.206indicates that the protection layer is arranged at the edge of the first area201.

In some embodiments of the present disclosure, the protection layer is a UV adhesive layer. The touch wiring includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked. For example, in the touch wiring, the aluminum metal layer has a thickness of 3000 angstroms, the first titanium metal layer arranged on a side of the aluminum metal layer facing the substrate has a thickness of 500 angstroms, and the second titanium metal layer arranged on a side of the aluminum metal layer away from the substrate has a thickness of 500 angstroms. However, the thickness of each of the layers is not limited in the present disclosure but depends on the situations.

It should be noted that the UV adhesive layer has a sulfhydryl group. The sulfhydryl group in the protection layer diffuses in the aluminum metal layer in the touch wiring, and consequently corrodes the aluminum metal layer in the touch wiring. As a result, the titanium metal layer arranged on the aluminum metal layer fractures. Since the titanium metal layer arranged beneath the aluminum metal layer is thin and then the impedance of the touch wiring is increased after the aluminum metal layer is corroded, resulting in poor performance of the touch wiring.

It should further be noted that the sulfhydryl group from the protection layer does not corrode the titanium metal layer in the touch wiring due to chemical stability of titanium.

Therefore, the sulfhydryl group from the protection layer is likely to corrode the aluminum metal layer of the touch wiring from sides of the touch wiring instead of directly above the aluminum metal layer.

FIG.13is a sectional view of the display panel cut along a line EE′ inFIG.12.FIG.14is a cross-sectional view along a line FF′ inFIG.12. The touch wiring30includes a first touch wire310and a second touch wire34. The first touch wire310is a part of the first touch lead31arranged in the array layer20, and has a first end311close to the flexible area202and a second end312away from the flexible area202. The second touch wire34is arranged from a different layer from the first touch wire310, and is electrically connected to the first touch wire310through a second through hole35.

In some embodiments, the first touch lead31is completely arranged in the array layer20, as shown inFIG.13. The second touch wire34is a part of the touch wiring30rather than a part of the first touch lead31. The second end312of the first touch wire310is connected in series with the second touch wire34through the second through hole35, to lengthen the part of the first touch lead31(i.e., the first touch wire310) arranged in the array layer20, to simplify the process of forming the first touch wire310.

In other embodiments of the present disclosure, as shown inFIG.15, the first touch lead31is partially arranged in the array layer20. That is, the first touch wire310is arranged in the array layer20while a part320of the first touch lead31is not arranged in the array layer20. In these embodiments, the second touch wire34partially belongs to the first touch lead31. The first touch wire310(i.e., the part of the first touch lead31in the array layer20) is connected in series with the part320of the first touch lead31not in the array layer20through the second through hole35, to shorten the part of the first touch lead31(i.e., the first touch wire310) in the array layer20. That is, the first touch wire310is small.

Therefore, the array layer20can have sufficient space to arrange other wirings. This is not limited in the present disclosure but depends on the situations. It should be noted that in other embodiments of the present disclosure, the first touch lead31is partially arranged in the array layer20, and the second touch wire completely belongs to the first touch lead. This is not limited in the present disclosure but depends on the situation.

Based on the above embodiments, in some embodiments of the present disclosure, as shown inFIGS.13and15, the display panel further includes a first dielectric layer90.

The first dielectric layer90is at least partially arranged between the first end311of the first touch wire310and the protection layer80. The first dielectric layer90includes at least one inorganic layer for protecting the first end311of the first touch wire310from being corroded by the sulfhydryl group from the protection layer80. That is, the aluminum metal layer in the touch wiring is protected from being corroded, for maintaining performance of the touch wiring.

It should be noted that in the above embodiments, the protection layer only covers the first end of the first touch wire. That is, the sulfhydryl group from the protection layer is likely to corrode the aluminum metal layer in the first touch lead from only the first end of the first touch wire. Therefore, the first dielectric layer90is at least partially arranged between the first end of the first touch wire and the protection layer. In other embodiments of the present disclosure, the protection layer further covers the second end of the first touch wire, and then the sulfhydryl group from the protection layer is likely to corrode the aluminum metal layer in the first touch lead from the second end of the first touch wire. Therefore, the first dielectric layer90is at least partially arranged between the second end of the first touch wire and the protection layer.

In some embodiments of the present disclosure, as shown inFIG.13, an orthographic projection of the first dielectric layer90on the plane where the substrate10is located covers an orthographic projection of the first touch wire310on the plane where the substrate10is located. An orthographic projection of the protection layer80on the plane where the substrate10is located does not overlap an orthographic projection of the second through hole35on the plane where the substrate10is located. That is, the first dielectric layer90completely covers the first touch wire310, and therefore the sulfhydryl group from the protection layer80cannot reach the aluminum metal layer in the first touch wire310through the second through hole35, therefore, the aluminum metal layer in the first touch wire310can be protected from corrosion, to maintain the performance of the touch wiring.

FIG.16is a sectional view of the display panel along a line EE′ inFIG.13.FIG.17is a sectional view of the display panel along a line FF′ inFIG.13. The first touch wire310is connected in parallel with the second touch wire34through the second through hole35. It should be noted that in the first direction X, a size d1of the second through hole35is less than or equal to a size d2of the first touch wire310. That is, the end of the first touch wire310close to the flexible area202is protected by the first dielectric layer90, and therefore the impedance of the touch wiring at the first touch wire310is small. The performance at the first touch wire310is improved.

In some embodiments, as shown inFIG.16, an edge of the protection layer80away from the flexible area202is at a first distance X1from a side of the flexible area202away from the second area (not shown inFIG.16). A side of the second through hole35away from the flexible area202is at a second distance X2from the side of the flexible area202away from the second area. The first distance X1is greater than the second distance X2.

In these embodiments, the sulfhydryl group from the protection layer80is likely to corrode the aluminum metal layer in the first touch wire310from both the first end (that is, the end close to the flexible area202) of the first touch segment310, and may further corrode the aluminum metal layer in the first touch wire310through the second end (that is the end away from the flexible area202) of the first touch wire310. Therefore, in the embodiment, the orthographic projection of the first dielectric layer90on the plane where the substrate10is located covers an orthographic projection of the first end of the first touch wire310and an orthographic projection of the second end of the first touch wire310on the plane where the substrate10is located. That is, both the end of the first touch wire310close to the flexible area202and the end of the first touch wire310away from the flexible area202are protected by the first dielectric layer90.

In other embodiments of the present disclosure, as shown inFIG.18, the edge of the protection layer80away from the flexible area202is at a first distance X1from the side of the flexible area202away from the second area (not shown inFIG.18). The side of the second through hole35away from the flexible area202is at a second distance X2from the side of the flexible area202away from the second area. The first distance X1is less than the second distance X2. In these embodiments, the sulfhydryl group from the protection layer80is likely to corrode the aluminum metal layer in the first touch wire310from the first end (that is, the end close to the flexible area202) of the first touch wire310rather than the second end (that is, the end away from the flexible area202) of the first touch wire310. In view of this, the orthographic projection of the first dielectric layer90on the plane where the substrate10is located at least covers the orthographic projection of the first end of the first touch wire310on the plane where the substrate10is located. That is, at least the end of the first touch wire310close to the flexible area202is protected by the first dielectric layer90.

Based on the above embodiments, in some embodiments of the present disclosure, as shown inFIG.18, the array layer further includes a third planarization layer28arranged between the third metal layer23and the first dielectric layer90. In some embodiments, the third planarization layer is an organic layer, which is not limited in the present disclosure but depends on the situations.

Based on any one of the above embodiments, in some embodiments of the present disclosure, as shown inFIG.3, a part of the second touch lead32in the flexible area202is arranged in a same layer as a part of the first touch lead31in the first area201. A part of the third touch lead33in the second area203are arranged in a same layer as the multiple touch electrodes60. Therefore, the third touch lead is fabricated along with the touch electrodes, to simplify the process of the touch wiring.

In some embodiments of the present disclosure, the third touch lead33includes a first part331and a second part332that are connected in parallel. The first part331is arranged in a same layer as the second touch electrodes. The second part332are arranged in a same layer as the bridges63for electrically connecting adjacent second touch electrodes62. In this way, impedance of the touch wiring is small and the process of the touch wiring is simplified.

From the above description, it can be seen that each of the touch electrodes includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked. Each of the bridges also includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked. The third touch lead also includes a first titanium metal layer, an aluminum metal layer, and a second titanium metal layer that are stacked, in order to fabricate the third touch lead along with the touch electrodes.

The third touch lead and the third metal layer each include the first titanium metal layer, the aluminum metal layer, and the second titanium metal layer that are stacked. That is, the third touch lead has the identical structure as the third metal layer. Further, the third metal layer is relatively close to the third touch lead. Therefore, in some embodiments of the present disclosure, the part of the first touch lead in the first area is arranged in the third metal layer. That is, the part of the first touch lead in the first area is formed from the third metal layer. In this way, the display panel is thin and the process of the display panel is simplified.

In one embodiment, as described above, in the touch electrode, the aluminum metal layer has the thickness of 3000 angstroms, the first titanium metal layer arranged on the side of the aluminum metal layer facing the substrate has the thickness of 500 angstroms, and the second titanium metal layer arranged on the side of the aluminum metal layer away from the substrate has the thickness of 500 angstroms. In the third metal layer, the aluminum metal layer has the thickness of 6500 angstroms, the first titanium metal layer arranged on the side of the aluminum metal layer facing the substrate has the thickness of 600 angstroms, and the second titanium metal layer arranged on a side of the aluminum metal layer away from the substrate has the thickness of 400 angstroms. The third metal layer is thicker than the touch electrode. Therefore, in the embodiment, the first touch lead is fabricated from the third metal layer, and therefore the impedance of the first touch lead is small. Further, the impedance of the touch wiring is small.

Based on the above embodiments, in some embodiments of the present disclosure, as shown inFIG.19, the non-active area further includes a binding area207arranged on a side of the first area201away from the flexible area202. In these embodiments, the array layer further includes a first power supply signal wiring110. A part of the first power supply signal wiring110in the first area201is arranged in the second metal layer.

In some embodiments of the present disclosure, as shown inFIG.19, the first power supply signal wiring includes a first power supply segment1101and a second power supply segment1102that are connected in parallel. The first power supply segment1101and the second power supply segment1102are arranged in the binding area207. The first power supply segment1101is arranged in the second metal layer, and the second power supply segment1102is arranged in the third metal layer. The impedance of the part of the first power supply signal wiring in the binding area is small since the first power supply segment1101and the second power supply segment1102are connected in parallel. Therefore, the signal suffers from low transmission loss through the first power supply signal wiring.

Based on the above embodiments, in some embodiments of the present disclosure, as shown inFIG.20, the display panel further includes a circuit board120arranged in the binding area207. Signals are transmitted to the signal wirings in the display panel via the circuit board120, to control the display panel to display information and sense the touch.

Based on the above embodiments, in some embodiments of the present disclosure, as shown inFIG.20, the display panel further includes a conductive fabric130at least partially covering the circuit board120. In some embodiment, the conductive fabric is made of a material performing well in electricity conductivity and electromagnetic shielding.

However, the conductive fabric is not limited in the present disclosure but depends on the situations.

In addition, a display device is further provided according to embodiments of the present disclosure.FIG.21is a schematic structural diagram of the display device according to an embodiment of the present disclosure. As shown inFIG.21, the display device includes the display panel according to any one of the foregoing embodiments. Therefore, the display device according to the embodiments of the present disclosure has the same beneficial effects as described in the above embodiments, which are not repeated herein. For example, the display device is an electronic device including a mobile phone, a computer, a smart wearable device (e.g., a smart watch), and a vehicle-mounted display device. Alternatively, the display device is a liquid crystal display device, an electrophoresis display device, an organic light-emitting display device, an inorganic light-emitting display device, a field emission display device, a surface conductive electron emission display device, a plasma display device, a cathode ray display device, or the like, which is not limited in the embodiments of the present disclosure.

The embodiments in the specification are described in a progressive way, and each of the embodiments emphasizes the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.