Display panel, preparation method thereof and display device

Abstract

Embodiments of the present application relate to the technical field of display, and disclose a display panel, a preparation method thereof and a display device. In the present application, the display panel comprises a substrate, a display layer and a touch layer which are arranged in layers, the touch layer comprises a first insulating layer, a plurality of first wires, a plurality of second wires, a transparent flat layer located on the side of the first insulating layer away from the substrate, and a through hole penetrating through the first insulating layer, the first wires extend along a first direction, the second wires extend along a second direction, the first direction intersects with the second direction, the orthographic projection of the through hole on the substrate does not overlap with the orthographic projection of the first wires on the substrate or the orthographic projection of the second wires on the substrate, and the transparent flat layer covers the second wires and fills the through hole. The display panel, the preparation method thereof and the display device provided by the present application can reduce the power consumption of the display panel while ensuring the display effect, and avoid the problem of energy waste.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of display, in particular to a display panel and a preparation method thereof, and a display device. BACKGROUND

[0002] With the development of display panel technology, high resolution, foldable and other technologies cause a substantial increase in display panel power consumption. For example, for the flexible OLED display panel which can be bent and folded, due to the more structural parts, the power consumption of the display panel is large when in use, causing the problem of energy waste.

[0003] Therefore, it is necessary to provide a new structure of display panel to reduce the power consumption of display, so as to avoid the problem of energy waste. SUMMARY

[0004] The embodiment of the present application aims to provide a display panel and a preparation method thereof, and a display device, which can reduce the power consumption of the display panel while ensuring the display effect, and avoid the problem of energy waste.

[0005] To solve the above technical problems, the embodiment of the present application provides a display panel, comprising: a substrate; a display layer located on one side of the substrate, the display layer comprising a plurality of light emitting units; a touch layer located on a side of the display layer away from the substrate, the touch layer comprising a first insulating layer, a plurality of first wires and a plurality of second wires, the first wires extending along a first direction, the second wires extending along a second direction, the first direction intersecting the second direction, each of the first wires being at least partially embedded in the first insulating layer, each of the second wires being located on a side of the first insulating layer away from the substrate, the first wires and the second wires being insulated by the first insulating layer; the touch layer further comprising a via hole penetrating through the first insulating layer, a projection of the via hole on the substrate and projections of the first wires and the second wires on the substrate do not overlap; the touch layer further comprising a transparent flat layer located on a side of the second wires away from the substrate, the transparent flat layer covering the second wires and filling the via hole.

[0006] The embodiment of the present application further provides a display device, comprising: the display panel as described above.

[0007] The embodiment of the present application further provides a preparation method of the display panel, comprising: providing a substrate; forming a display layer on one side of the substrate, the display layer comprising a plurality of light emitting units; forming a touch layer on the side of the display layer away from the substrate, the touch layer comprising a first insulating layer, a plurality of first wires and a plurality of second wires, the first wires extending along a first direction, the second wires extending along a second direction, the first direction intersecting the second direction, each of the first wires being at least partially embedded in the first insulating layer, each of the second wires being located on the side of the first insulating layer away from the substrate, the first wires and the second wires being insulated by the first insulating layer; forming a through hole penetrating through the first insulating layer, the through hole having a projection on the substrate which does not overlap with the projection of the first wires on the substrate or the projection of the second wires on the substrate; and forming a transparent flat layer on the side of the second wires away from the substrate, the transparent flat layer covering the second wires and filling the through hole.

[0008] The embodiment of the present application further provides a preparation method of the display panel, comprising: providing a substrate; forming a display layer on one side of the substrate, the display layer comprising a plurality of light emitting units; forming a touch layer on the side of the display layer away from the substrate, the touch layer comprising a first insulating layer, a plurality of first wires and a plurality of second wires, the first wires extending along a first direction, the second wires extending along a second direction, the first direction intersecting the second direction, each of the first wires being at least partially embedded in the first insulating layer, each of the second wires being located on the side of the first insulating layer away from the substrate, the first wires and the second wires being insulated by the first insulating layer; forming a through hole penetrating through the first insulating layer, the through hole having a projection on the substrate which does not overlap with the projection of the first wires on the substrate or the projection of the second wires on the substrate; and forming a transparent flat layer on the side of the second wires away from the substrate, the transparent flat layer covering the second wires and filling the through hole.

[0009] Optionally, the projection of the through hole on the substrate comprises a region surrounded by the projection of two adjacent first wires on the substrate and the projection of two adjacent second wires on the substrate.

[0010] Optionally, each of the first wires comprises a plurality of first metal grid units, and two adjacent first metal grid units are electrically connected; each of the second wires comprises a plurality of second metal grid units, and two adjacent second metal grid units are electrically connected; the first metal grid units and the second metal grid units are each surrounded by a metal wire; and the projection of the through hole on the substrate comprises at least one of the following: the projection of a region surrounded by the first metal grid units on the substrate or the projection of a region surrounded by the second metal grid units on the substrate.

[0011] Optionally, the first insulating layer is provided with a connecting hole; the first trace includes a trace on the first patterned metal layer and a part of traces on the second patterned metal layer, the trace on the first patterned metal layer and the part of traces on the second patterned metal layer are connected through the connecting hole; the second trace includes another part of traces on the second patterned metal layer.

[0012] Optionally, the touch layer further includes a second insulating layer on the side of the display layer away from the substrate, the first insulating layer, the plurality of first traces and the plurality of second traces are provided on the side of the second insulating layer away from the substrate, and the transparent flat layer is in contact with the second insulating layer through the through hole.

[0013] Optionally, the first trace is a touch trace, and the second trace is a sensing trace.

[0014] Optionally, the material of the transparent flat layer is any one of acrylate, polyurethane oligomer or any combination thereof. In this way, excessive light can be avoided from being absorbed by passing through the transparent flat layer, and light loss is reduced.

[0015] Optionally, a first patterned metal layer is formed on the side of the display layer away from the substrate; a first insulating layer is formed on the side of the first patterned metal layer away from the substrate, the first insulating layer fills the patterned area on the first patterned metal layer; a connecting hole is formed on the first insulating layer; a second patterned metal layer is formed on the first insulating layer, a part of traces on the second patterned metal layer are connected with the traces on the first patterned metal layer through the connecting hole to form the first trace, and another part of traces on the second patterned metal layer form the second trace. BRIEF DESCRIPTION OF DRAWINGS

[0016] One or more embodiments are illustrated by way of example in the figures that are part of this disclosure and which are illustrative, but not restrictive, of the embodiments, wherein elements having the same reference number designates like elements throughout the various figures, and wherein the figures do not necessarily bear a proportional relationship to each other.

[0017] Figure 1 is a top view of a display panel provided by the first embodiment of the present application;

[0018] Figure 2 is a sectional view along the direction of A-A in Figure 1 ;

[0019] Figure 3 is a sectional view along the direction of B-B in Figure 1 ;

[0020] Figure 4is a cross-sectional view along the direction of C-C in Figure 1

[0021] Figure 5 is a cross-sectional view along the direction of A-A of another display panel provided by the first embodiment of the present application;

[0022] Figure 6 is a flow chart of a manufacturing method of the display panel provided by the third embodiment of the present application. DETAILED DESCRIPTION

[0023] To make the objects, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the embodiments of the present application, many technical details are presented in order to make the readers better understand the present application. However, the technical solutions claimed by the present application can be implemented even without these technical details and based on various changes and modifications of the following embodiments.

[0024] The first embodiment of the present application relates to a display panel, as shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 The display panel includes a substrate 11, a display layer 12, and a touch layer 13 arranged in a stack, specifically, the display layer 12 is located on one side of the substrate 11, and the touch layer 13 is located on a side of the display layer 12 away from the substrate 11. The display layer 12 can include a plurality of light emitting units 121, and the touch layer 13 can include a first insulating layer 131, a plurality of first wires 132, a plurality of second wires 133, and a transparent flat layer 134. The first wires 132 extend along a first direction X, the second wires 133 extend along a second direction Y, and the first direction X intersects the second direction Y (for example, the first direction and the second direction can be perpendicular to each other), that is, the plurality of first wires 132 and the plurality of second wires 133 form a grid shape.

[0025] Each first wire 132 is at least partially embedded in the first insulating layer 131, and each second wire 133 is located on a side of the first insulating layer 131 away from the substrate 11. The first wires 132 and the second wires 133 are insulated by the first insulating layer 131. The transparent flat layer 134 is located on a side of the second wires 133 away from the substrate 11.

[0026] The touch layer 13 can further include a via hole 14 penetrating the first insulating layer 131. The orthogonal projection of the via hole 14 on the substrate 11 does not overlap with the orthogonal projection of the first wires 132 on the substrate 11 or the orthogonal projection of the second wires 133 on the substrate 11. The transparent flat layer 134 covers the second wires 133 and fills the via hole 14.

[0027] ​By setting a through hole 14 penetrating the first insulating layer 131, the orthographic projection of the through hole 14 on the substrate 11 does not overlap with the orthographic projections of the first trace 132 and the second trace 133 on the substrate 11. A transparent planarization layer 134 is set on the side of the first insulating layer 131 away from the substrate 11. The transparent planarization layer 134 covers the second trace 133 and fills the through hole 14, so that the through hole 14 contains only the transparent planarization layer 134. This reduces the number of film layers that light passes through, improves the problem of light refraction and light loss caused by light having to pass through the interface between the first insulating layer 131 and the transparent planarization layer 134 when passing through the area where the through hole 14 is located, improves the light transmittance of the area where the through hole 14 is located, improves the light emission efficiency of the display panel, reduces the luminous intensity of the display panel while ensuring the display effect, reduces power consumption, and avoids the problem of energy waste. Meanwhile, since the bending performance of the transparent planarization layer 134 is better than that of the first insulating layer 131, the bending performance of the display panel can be improved by replacing the first insulating layer 131 in the area where the through hole 14 is located with the transparent planarization layer 134.

[0028] The material of the first insulating layer 131 can be an inorganic material, such as silicon nitride and silicon oxide or any combination thereof. The material of the transparent planarization layer 134 can be a transparent organic material, such as acrylate, polyurethane oligomers or any combination thereof. This arrangement can prevent excessive light from being absorbed by the transparent planarization layer 134, thereby reducing light loss.

[0029] In this embodiment, the orthographic projection of the through hole 14 on the substrate 11 includes the region 40 enclosed by the orthographic projections of two adjacent first traces 132 on the substrate 11 and the orthographic projections of two adjacent second traces 133 on the substrate 11.

[0030] Specifically, such as Figure 1 As shown, each first trace 132 includes multiple first metal mesh units 132a, and adjacent first metal mesh units 132a are electrically connected. Specifically, adjacent first metal mesh units 132a can be electrically connected through a first connecting portion 132b. Each second trace 133 includes multiple second metal mesh units 133a, and adjacent second metal mesh units 133a are electrically connected. Specifically, adjacent second metal mesh units 133a can be electrically connected through a second connecting portion 133b. Both the first metal mesh units 132a and the second metal mesh units 133a are formed by metal wires.

[0031] The first metal mesh unit 132a and the second metal mesh unit 133a can be arranged opposite to the light emitting unit 121 respectively. For example, one first metal mesh unit 132a is arranged opposite to one light emitting unit 121, and one second metal mesh unit 133a is arranged opposite to one light emitting unit 121.

[0032] The orthographic projection of the first metal mesh unit 132a on the substrate 11 does not overlap with the orthographic projection of the second trace 133 on the substrate 11, and the orthographic projection of the second metal mesh unit 133a on the substrate 11 does not overlap with the orthographic projection of the first trace 132 on the substrate 11. The orthographic projection of the first connecting part 132b on the substrate 11 and the orthographic projection of the second connecting part 133b on the substrate 11 are arranged to overlap. That is, the position of the overlap of the first connecting part 132b and the second connecting part 133b is the position of the overlap of the first trace 132 and the second trace 133. The first insulating layer 131 is arranged between the first connecting part 132b and the second connecting part 133b, so that the first connecting part 132b and the second connecting part 133b are insulated and overlapped.

[0033] Further, the orthographic projection of the through hole 14 on the substrate 11 can include at least one of the orthographic projection of the area 20 enclosed by the first metal mesh unit 132a on the substrate 11 and the orthographic projection of the area 30 enclosed by the second metal mesh unit 133a on the substrate 11.

[0034] Optionally, as shown in Figure 2 , Figure 3 , Figure 4 The orthographic projection of the through hole 14 on the substrate 11 includes: the orthographic projection of the area 40 enclosed by the orthographic projection of the two adjacent first traces 132 on the substrate 11 and the orthographic projection of the two adjacent second traces 133 on the substrate 11, the orthographic projection of the area 20 enclosed by the first metal mesh unit 132a on the substrate 11, and the orthographic projection of the area 30 enclosed by the second metal mesh unit 133a on the substrate 11. The area 20 enclosed by the first metal mesh unit 132a can be a rhombus, a rectangle, a square, etc., and the area 30 enclosed by the second metal mesh unit 133a can be a rhombus, a rectangle, a square, etc., which are not limited here.

[0035] Each light emitting unit 121 can include a plurality of light emitting sub-pixels of different colors. Each light emitting sub-pixel can be a red light emitting sub-pixel, a green light emitting sub-pixel, or a blue light emitting sub-pixel. Specifically, each light emitting sub-pixel can include a first light emitting structure, a first electrode, and a second electrode. In an embodiment, the first electrode can be an anode, and the second electrode can be a cathode. The material of the first electrode can be an ITO / Ag / ITO stack structure, and the material of the second electrode can be a transparent conductive material (for example, ITO conductive glass).

[0036] Optionally, the first insulating layer 131 is provided with a connection hole 137, the first trace 132 includes a trace on the first patterned metal layer 135 (for example, the first patterned metal layer 135 is an M1 metal layer) and a part of traces on the second patterned metal layer 136 (for example, the second patterned metal layer 136 is an M2 metal layer), the trace on the first patterned metal layer 135 and the part of traces on the second patterned metal layer 136 are connected through the connection hole 137, and the second trace 133 includes another part of traces on the second patterned metal layer 136.

[0037] That is, the touch layer 13 can include the first patterned metal layer 135, the first insulating layer 131 located on the first patterned metal layer 135, and the second patterned metal layer 136 located on the first insulating layer 131, the first insulating layer 131 is provided with the connection hole 137, a part of traces on the second patterned metal layer 136 are connected with the traces on the first patterned metal layer 135 through the connection hole 137 to form the first trace 132 together, and another part of traces on the second patterned metal layer 136 form the second trace 133. Therefore, a part of the first trace 132 is located on the first patterned metal layer 135, another part is located on the second patterned metal layer 136, and the second trace 133 is located on the second patterned metal layer 136. It should be noted that, in addition to the first trace, the first patterned metal layer 135 can also form other traces or components, and in addition to the first trace and the second trace, the second patterned metal layer 136 can also form other traces or components.

[0038] Optionally, the first trace 132 can be a touch trace (i.e., a Tx trace), and the second trace 133 can be a sensing trace (i.e., an Rx trace). That is, the Rx trace and the Tx trace share the M2 metal layer, and the Tx trace is connected with the trace on the M1 metal layer at the overlapping position with the Rx trace, wherein a part of the Tx trace is connected with the trace on the M1 metal layer through the connection hole 137, so that the Rx trace and the Tx trace are insulated from each other.

[0039] Optionally, the touch layer 13 can further include a second insulating layer 138 located on the side of the display layer 12 away from the substrate 11, the first insulating layer 131, the plurality of first traces 132, and the plurality of second traces 133 are all located on the side of the second insulating layer 138 away from the substrate 11, specifically, the first patterned metal layer 135 and the first insulating layer 131 are both located on the side of the second insulating layer 138 away from the substrate 11. The transparent flat layer 134 is in contact with the second insulating layer 138 through the through hole 14. The material of the second insulating layer 138 can be inorganic matter, for example, any one or any combination of silicon nitride and silicon oxide.

[0040] In actual applications, the display layer 12 and the touch layer 13 can further include an encapsulation layer 15, such as a flexible encapsulation layer 15 (for example, a thin-film encapsulation (TFE) layer) or a hard encapsulation layer 15 (for example, a glass layer), and the substrate 11 and the display layer 12 can further include a device layer 16, and a pixel circuit for controlling the light-emitting unit 121 is located in the device layer 16.

[0041] As shown in FIG. 1, in another implementation manner, the orthogonal projection of the via hole 14 on the substrate 11 can further include a second region 50 in which the orthogonal projection (i.e., a first projection) of the wire on the first patterned metal layer 135 on the substrate 11 does not overlap with the orthogonal projection (i.e., a second projection) of the wire on the second patterned metal layer 136 on the substrate 11. In other words, the first projection is composed of a first part that overlaps with the second projection and a second part that does not overlap with the second projection, and the second region 50 can be the second part. Figure 5

[0042] Compared with the prior art, in the implementation manner of the present application, the orthogonal projection of the via hole 14 on the substrate 11 does not overlap with the orthogonal projection of the first wire 132 on the substrate 11 or the orthogonal projection of the second wire 133 on the substrate 11, the transparent planar layer 134 is arranged on the side of the second wire 133 away from the substrate 11, the transparent planar layer 134 covers the second wire 133 and fills the via hole 14, so that there is only the transparent planar layer 134 in the via hole 14, the number of film layers through which light passes is reduced, the problem of light loss caused by the light refraction effect when the light passes through the interface between the first insulating layer 131 and the transparent planar layer 134 in the area where the via hole 14 is located is improved, the light transmittance of the area where the via hole 14 is located is improved, the light extraction efficiency of the display panel is improved, the power consumption of the display panel is reduced while the display effect is ensured, and the problem of energy waste is avoided. At the same time, since the bending performance of the transparent planar layer 134 is better than that of the first insulating layer 131, the bending performance of the display panel can be improved by replacing the first insulating layer 131 in the area where the via hole 14 is located with the transparent planar layer 134.

[0043] The second implementation manner of the present application relates to a display device, which includes the display panel according to any one of the above implementation manners.

[0044] ​Since the present embodiment is a display device embodiment corresponding to the first embodiment, the present embodiment can be implemented in cooperation with the first embodiment. The technical details mentioned in the first embodiment are still valid in the present embodiment, and are not repeated here in order to reduce repetition. Correspondingly, the technical details mentioned in the present embodiment can also be applied in the first embodiment. In addition, those skilled in the art can understand that the present embodiment can achieve similar technical effects as the first embodiment, which will not be repeated here.

[0045] A third embodiment of the present application relates to a preparation method of a display panel, as shown in Figure 6 The preparation method of the display panel comprises the following steps:

[0046] S11: providing a substrate.

[0047] S12: forming a display layer on one side of the substrate, the display layer comprising a plurality of light emitting units.

[0048] S13: forming a touch layer on the side of the display layer away from the substrate.

[0049] In this step, the touch layer comprises a first insulating layer, a plurality of first wires, and a plurality of second wires, the first wires extend along a first direction, the second wires extend along a second direction, the first direction intersects the second direction, each first wire is at least partially embedded in the first insulating layer, each second wire is located on the side of the first insulating layer away from the substrate, and the first wires and the second wires are insulated by the first insulating layer.

[0050] Optionally, S13 can specifically comprise the following sub-steps: forming a first patterned metal layer on the side of the display layer away from the substrate; forming a first insulating layer on the side of the first patterned metal layer away from the substrate, the first insulating layer filling a patterned area on the first patterned metal layer; opening a connecting hole in the first insulating layer; forming a second patterned metal layer on the first insulating layer, a part of the wires on the second patterned metal layer being connected to the wires on the first patterned metal layer through the connecting hole to form the first wires, and another part of the wires on the second patterned metal layer forming the second wires.

[0051] In actual application, the first patterned metal layer and the second patterned metal layer can be formed by using a Metal Mesh process.

[0052] The preparation method of the display panel further comprises the following steps:

[0053] S14: forming a through hole penetrating through the first insulating layer, the orthographic projection of the through hole on the substrate not overlapping the orthographic projection of the first wires on the substrate or the orthographic projection of the second wires on the substrate.

[0054] S15: A transparent flat layer is formed on the side of the second trace away from the substrate, covering the second trace and filling the via hole.

[0055] In the embodiment of the present application, by forming the via hole penetrating through the first insulating layer, the orthographic projection of the via hole on the substrate does not overlap with the orthographic projection of the first trace on the substrate and the orthographic projection of the second trace on the substrate. Then, the transparent flat layer is arranged on the side of the second trace away from the substrate, covering the second trace and filling the via hole, so that there is only the transparent flat layer in the via hole, reducing the number of film layers through which light passes, improving the problem of light loss caused by the light refraction effect when the light passes through the interface between the first insulating layer and the transparent flat layer in the area where the via hole is located, improving the light transmittance of the area where the via hole is located, improving the light extraction efficiency of the display panel, reducing the power consumption of the display panel while ensuring the display effect, and avoiding the problem of energy waste. At the same time, since the bending performance of the transparent flat layer is better than that of the first insulating layer, the bending performance of the display panel can be improved by replacing the first insulating layer in the area where the via hole is located with the transparent flat layer.

[0056] Since the present embodiment is a method embodiment corresponding to the first embodiment, the present embodiment can be implemented in cooperation with the first embodiment. The related technical details mentioned in the first embodiment are still valid in the present embodiment, and in order to reduce repetition, they will not be repeated here. Correspondingly, the related technical details mentioned in the present embodiment can also be applied in the first embodiment. In addition, those skilled in the art can understand that the present embodiment can achieve similar technical effects as the first embodiment, which will not be repeated here.

[0057] Those skilled in the art can understand that the above embodiments are specific embodiments for implementing the present application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A display panel, characterized by, The display panel comprises: a substrate; a display layer located on one side of the substrate, the display layer comprising a plurality of light-emitting units; a touch control layer located on a side of the display layer away from the substrate, the touch control layer comprising a first insulating layer, a plurality of first wires and a plurality of second wires, the first wires being touch control wires, the second wires being sensing wires; the first wires extend along a first direction, the second wires extend along a second direction, the first direction intersects the second direction, each of the first wires is at least partially embedded in the first insulating layer, each of the second wires is located on a side of the first insulating layer away from the substrate, the first wires and the second wires are insulated by the first insulating layer; the first insulating layer is provided with a connecting hole; the first wires comprise wires on a first patterned metal layer and part of wires on a second patterned metal layer, the wires on the first patterned metal layer and the part of wires on the second patterned metal layer are connected through the connecting hole; the second wires comprise another part of wires on the second patterned metal layer; the touch control layer further comprises a through hole penetrating through the first insulating layer, a projection of the through hole on the substrate comprises an area that does not overlap with a projection of the first wires on the substrate, a projection of the second wires on the substrate and a second area in which a projection of the wires on the first patterned metal layer on the substrate does not coincide with a projection of the wires on the second patterned metal layer on the substrate; the touch control layer further comprises a transparent flat layer located on a side of the second wires away from the substrate, the transparent flat layer covers the second wires and fills the through hole.

2. The display panel of claim 1, wherein, The projection of the through hole on the substrate comprises an area enclosed by projections of two adjacent first wires on the substrate and projections of two adjacent second wires on the substrate.

3. The display panel of claim 1, wherein: each of the first wires comprises a plurality of first metal grid units, and adjacent two of the first metal grid units are electrically connected; each of the second wires comprises a plurality of second metal grid units, and adjacent two of the second metal grid units are electrically connected; the first metal grid units and the second metal grid units are each enclosed by a metal wire; the projection of the through hole on the substrate comprises at least one of a projection of an area enclosed by the first metal grid units on the substrate and a projection of an area enclosed by the second metal grid units on the substrate.

4. The display panel of claim 1, wherein, The touch control layer further comprises a second insulating layer located on a side of the display layer away from the substrate, the first insulating layer, the plurality of first wires and the plurality of second wires are all located on a side of the second insulating layer away from the substrate, and the transparent flat layer contacts the second insulating layer through the through hole.

5. The display panel of claim 1, wherein, The material of the transparent flat layer is any one of acrylate, polyurethane-based oligomer or any combination thereof.

6. A display device, characterized by comprising: The display panel of any one of claims 1 to 5. The display panel is provided by:

7. A method for manufacturing a display panel, characterized by, providing a substrate; ​ A display layer is formed on one side of the substrate, and the display layer comprises a plurality of light-emitting units; A touch layer is formed on the side of the display layer away from the substrate, and the touch layer comprises a first insulating layer, a plurality of first traces, and a plurality of second traces, the first traces are touch traces, and the second traces are sensing traces; the first traces extend in a first direction, and the second traces extend in a second direction, the first direction intersects the second direction, each of the first traces is at least partially embedded in the first insulating layer, and each of the second traces is located on the side of the first insulating layer away from the substrate, the first traces and the second traces are insulated by the first insulating layer; The first insulating layer is provided with a connecting hole; the first traces comprise traces on a first patterned metal layer and part of traces on a second patterned metal layer, the traces on the first patterned metal layer and the part of the traces on the second patterned metal layer are connected through the connecting hole; the second traces comprise another part of the traces on the second patterned metal layer; A through hole is formed through the first insulating layer, and a projection of the through hole on the substrate comprises an area that does not overlap with a projection of the first traces on the substrate, a projection of the second traces on the substrate, and a second area in which a projection of the traces on the first patterned metal layer on the substrate does not coincide with a projection of the traces on the second patterned metal layer on the substrate; A transparent flat layer is formed on the side of the second traces away from the substrate, and the transparent flat layer covers the second traces and fills the through hole.

8. The method of manufacturing a display panel according to claim 7, wherein, The touch layer formed on the side of the display layer away from the substrate comprises: A first patterned metal layer is formed on the side of the display layer away from the substrate; A first insulating layer is formed on the side of the first patterned metal layer away from the substrate, and the first insulating layer fills a patterned area on the first patterned metal layer; A connecting hole is formed in the first insulating layer; A second patterned metal layer is formed on the first insulating layer, part of the traces on the second patterned metal layer are connected to the traces on the first patterned metal layer through the connecting hole to form the first traces, and another part of the traces on the second patterned metal layer form the second traces.

Images