CN117241621A - Display panel, manufacturing method thereof and display device - Google Patents

Abstract

The application relates to a display panel, a manufacturing method thereof and a display device. The display panel is provided with a display area and a non-display area surrounding the display area, wherein the display area comprises a plurality of data lines which extend along a first direction and are arranged at intervals along a second direction, the non-display area comprises a fan-out area and a bonding pad area, the fan-out area is positioned at one side of the display area in the first direction, the fan-out area comprises a laser cutting area, and the laser cutting area extends along the second direction. The display panel includes: a substrate; a first metal layer located on one side of the substrate, the first metal layer comprising a plurality of metal traces located in the fan-out region, each metal trace comprising a first section located in the laser cut region; and a second metal layer located on a side of the first metal layer facing away from the substrate, an orthographic projection of the second metal layer on the substrate covering at least a portion of the first section. The application is beneficial to improving the production yield of the display panel.

Description

Display panel, manufacturing method thereof and display device

Technical Field

The application relates to the technical field of display, in particular to a display panel, a manufacturing method thereof and a display device.

Background

Along with the continuous development of science and technology, more and more display devices with display functions are widely applied to daily life and work of people, bring great convenience to daily life and work of people, and become an indispensable important tool for people at present.

The main component of the display device for realizing the display function is a display panel. In general, a cover plate is attached to the display panel to protect the display panel. During packaging, the cover plate is also required to be cut so that a plurality of binding pins of the bonding area of the display panel are exposed. However, the metal wire used for connecting the binding pins in the display panel is easily cut when the cover plate is cut, or the metal wire is easily cut after the cover plate fragments fall down, so that the metal wire is broken, the display effect is affected, even the display cannot be performed, and the production yield of the display panel is not improved.

Disclosure of Invention

Based on the above problems, the application provides a display panel, a manufacturing method thereof and a display device, which are beneficial to reducing the probability of cutting off a metal wire, and further beneficial to improving the production yield of the display panel.

An embodiment of a first aspect of the present application proposes a display panel having a display area and a non-display area surrounding the display area, the display area including a plurality of data lines extending in a first direction and arranged at intervals in a second direction, the non-display area including a fan-out area and a pad area located at one side of the display area in the first direction, the fan-out area including a laser cut area extending in the second direction, the first direction intersecting the second direction. The display panel includes: a substrate; a first metal layer on one side of the substrate, the first metal layer including a plurality of metal traces on the fan-out region, the metal trace arrangement connecting the data lines to the pad region, each metal trace including a first section on the laser cut region; and a second metal layer located on a side of the first metal layer facing away from the substrate, an orthographic projection of the second metal layer on the substrate covering at least a portion of the first section.

In some embodiments, an orthographic projection of the second metal layer on the substrate covers the entire first section.

In some embodiments, the second metal layer includes a first power signal line configured to provide a power signal to the display panel, a front projection of the first power signal line on the substrate covering the first section.

In some embodiments, the first power signal line is a cathode signal line.

In some embodiments, the first power signal line includes a first body portion located in the fan-out region and a plurality of first power wires connected to the first body portion, the first power wires extending from the fan-out region to the display region and being spaced apart from the data line;

an orthographic projection of the first body portion on the substrate covers the first section.

In some embodiments, the data line and the first power signal line are located at different layers, and the data line and the metal trace are located at the same layer.

In some embodiments, the second metal layer includes a first power signal line and a metal routing protection block, the first power signal line includes a first main body portion located in the fan-out region and a plurality of first power routing wires connected with the first main body portion, the first power routing wires extend from the fan-out region to the display region and are spaced apart from the data line;

an orthographic projection of the metal wire protection block on the substrate covers the first section.

In some embodiments, the metal trace protection block is connected to a fixed potential.

In some embodiments, the display panel further includes an inorganic insulating layer between the first metal layer and the second metal layer, an orthographic projection of the inorganic insulating layer on the substrate covering the metal traces.

In some embodiments, the fan-out region includes a first sub-fan-out region and a second sub-fan-out region located on both sides of the laser cut region in the first direction;

each metal wire further comprises a second section located in the first sub-fan-out area and a third section located in the second sub-fan-out area, the first section comprises at least two first sub-sections arranged along the second direction, and the second section is connected with the third section through the first sub-sections.

An embodiment of a second aspect of the present application provides a display device, including the display panel of the first aspect.

An embodiment of a third aspect of the present application provides a method for manufacturing a display panel, which is applied to the display panel described in the first aspect. The manufacturing method of the display panel comprises the following steps:

providing a substrate;

fabricating a first metal layer on the substrate, the first metal layer including a plurality of metal traces in the fan-out region, the metal trace arrangement connecting the data lines to the pad region, each of the metal traces including a first section in the laser cutting region;

and manufacturing a second metal layer on one side of the first metal layer, which is away from the substrate, and enabling the orthographic projection of the second metal layer on the substrate to cover at least one part of the first section.

In the application, the display panel comprises a substrate, a first metal layer and a second metal layer, wherein the orthographic projection of the second metal layer on the substrate covers at least one part of the first section. When the cover plate is cut, the position, corresponding to the cutting line, on the first section of the metal wiring can be shielded by the second metal layer, so that the probability of breakage and virtual connection of the metal wiring due to cutting or scratching by fragments of the cover plate can be reduced, and the production yield of the display panel can be improved while the display effect is ensured.

Drawings

FIG. 1 is a top view of a display panel according to the related art;

FIG. 2 is a schematic diagram of a structure of a display panel and a cover plate in the related art without bonding;

FIG. 3 is a schematic diagram of a structure of a second metal layer and a first metal layer of a display panel according to an embodiment of the application;

FIG. 4 is a schematic cross-sectional view taken along line A-A in FIG. 3;

FIG. 5 is a schematic diagram of a second metal layer and a first metal layer of a display panel according to an embodiment of the application;

fig. 6 is a schematic structural diagram of a first power signal line according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a first power signal line and a metal routing protection block according to an embodiment of the present application;

FIG. 8 is a schematic view of another cross-sectional structure along A-A in FIG. 3;

FIG. 9 is a schematic view of the structure of a first section according to an embodiment of the present application;

fig. 10 is a flowchart illustrating a method for manufacturing a display panel according to an embodiment of the application.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Further, the drawings are not 1:1, and the relative dimensions of the various elements are drawn by way of example only in the drawings and are not necessarily drawn to true scale.

As shown in fig. 1, fig. 1 is a top view of an associated display panel 1. The display panel 1 includes a display area 1a and a non-display area 1b. Non-display area 1b includes fan-out area 2 and bonding area 3. The data line of the display area 1a is connected to a binding pin (not shown) of the bonding area 3 through a fan-out line 21 of the fan-out area 2. With continued reference to fig. 2, fig. 2 is a schematic diagram illustrating a structure in which the display panel 1 and the cover 5 are not attached. The cover plate 5 and the display panel 1 need to be aligned and attached to protect the display panel 1. After the cover plate 5 is attached to the display panel 1, the cover plate 5 is cut, so that the binding pins 4 of the bonding area 3 of the display panel 1 are leaked out, and the bonding area 3 can be bonded with an external circuit. Therefore, the cutting line M1 is disposed on the cover 5, and the fan-out area 2 of the display panel 1 is further provided with a laser cutting area 6 corresponding to the cutting line M1 of the cover 5. Like this, when apron 5 and display panel 1 laminate the back to apron 5 cutting, fan-out is walked the line 21 and is in the part in laser cutting region 6 and is cut off easily, perhaps is broken by the apron piece easily to influence display panel 1's display effect, can't show even, and then be unfavorable for improving display panel 1's production yield.

Based on the above problems, the application provides a display panel, a manufacturing method thereof and a display device, which are beneficial to reducing the probability of cutting off a metal wire, and further beneficial to improving the production yield of the display panel.

An embodiment of the first aspect of the present application proposes a display panel 100. As shown in fig. 3, the display panel 100 has a display area 101 and a non-display area 102 surrounding the display area 101, the display area 101 including a plurality of data lines 1011 extending in a first direction X and arranged at intervals in a second direction Y, the non-display area 102 including a fan-out area 102a and a pad area 102b located at one side of the display area 101 in the first direction X. The fan-out area 102a includes a laser cut area 1021, the laser cut area 1021 extending along a second direction Y, the first direction X intersecting the second direction Y. As shown in fig. 3 and 4, the display panel 100 includes a substrate 110, a first metal layer 120 disposed on a side of the substrate 110, and a second metal layer 130 disposed on a side of the first metal layer 120 facing away from the substrate 110, the first metal layer 120 includes a plurality of metal traces 121 disposed on the fan-out region 102a, the metal traces 121 are configured to connect the data lines 1011 to the pad regions 102b, and the metal traces 121 include a first section 1211 disposed in the laser cutting region 1021. The orthographic projection of the second metal layer 130 on the substrate 110 covers at least a portion of the first section 1211.

In the present application, the display panel 100 has a display area 101 and a non-display area 102. The display area 101 is an area for displaying a screen. The display area 101 includes a plurality of data lines 1011 extending in the first direction X and arranged at intervals in the second direction Y. In general, a pixel circuit and a light emitting element connected to the pixel circuit are provided in the display region 101. The data line 1011 is electrically connected to the pixel circuit, thereby supplying a data driving signal to the light emitting element. Further, the pixel circuit may be a 7T1C circuit, and the light emitting element may include an OLED device, a Micro LED device, a Mini LED device, a QLED (Quantum Dots Light Emitting Diode Display) device, an inorganic light emitting display device, etc., and the shape of the light emitting element may include a polygon, a circle, an ellipse, an irregular pattern, etc., which is not limited in the present application.

The non-display area 102 refers to an area not used for displaying a screen. That is, the non-display area 102 is a frame area of the display panel 100 for arranging various driving circuits and circuit traces. Further, the non-display area 102 includes a fan-out area 102a and a pad area 102b located at one side of the display area 101 in the first direction X. That is, the fan-out region 102a and the pad region 102b are one sub-region of the non-display region 102. For example, the fan-out region 102a and the pad region 102b may be one of an upper frame, a lower frame, a left frame, or a right frame in the non-display region 102, which is not limited by the present application. Preferably, in the present application, the fan-out region 102a and the pad region 102b are lower frames in the non-display region 102.

The fan-out area 102a refers to an area connecting the data line 1011 and the pad area 102b in the display area 101. The fan-out area 102a includes a laser cutting area 1021, and the laser cutting area 1021 refers to an area of the display panel 100 opposite to a cutting line of the cover plate when the cover plate is cut. The laser cutting region 1021 extends in the second direction Y. It can be seen that the laser cut region 1021 intersects the data line 1011. It should be noted that, referring to fig. 2, the dimension of the laser cutting area 1021 in the first direction X, that is, the width of the laser cutting area 1021 is larger than the dimension of the cutting line M1 in the first direction X, that is, the width of the cutting line M1. In this way, even if an alignment error occurs between the cover plate and the display panel 100, the front projection of the cutting line M1 on the cover plate on the display panel 100 is located in the laser cutting area 1021.

The pad region 102b is a region for bonding with an external circuit such as a driving chip or a circuit board, so that signals of the external circuit are sequentially transferred to the data line 1011 in the display region 101 through the pad region 102b and the fan-out region 102a, and finally transferred to the pixel circuit. Pad area 102b typically includes a plurality of bonding pins (not shown).

Further, the display panel 100 includes a substrate 110, a first metal layer 120, and a second metal layer 130. The first metal layer 120 includes a plurality of metal traces 121 located in the fan-out region 102a. That is, the metal trace 121 is used to connect the data line 1011 and the pad region 102b. Further, the metal trace 121 includes a first section 1211 located within the laser cut region 1021, the first section 1211 being a portion of the metal trace 121.

The second metal layer 130 refers to a metal layer that is different from the first metal layer 120, and is located on a side of the first metal layer 120 facing away from the substrate 110. The second metal layer 120 may be used to fabricate one or more of the first power signal line VDD, the second power signal line VSS, the data line 1011, and the source/drain metal layers of the thin film transistor. When the second metal layer 120 is used for manufacturing the data line 1011, the data line 1011 is overlapped with the metal trace 121 of the first metal layer 120 through the via hole. It should be noted that, the front projection of the second metal layer 130 on the substrate 110 covers at least a portion of the first section 1211, which means that, as shown in fig. 3, the front projection of the second metal layer 130 on the substrate 110 may cover a small section of the first section 1211. Since the width of the laser cutting area 1021 is greater than the width of the cutting line M1, in a limited case, the front projection of the second metal layer 130 on the substrate 110 only needs to cover a small section of the first section 1211 corresponding to the laser cutting line M1, so as to protect the metal trace 121. Alternatively, as shown in fig. 5, the orthographic projection of the entire first section 1211 of the metal trace 121 onto the substrate 110 is located within the orthographic projection of the second metal layer 130 onto the substrate 110. In this way, the second metal layer 130 may form a barrier to the entire first section 1211 of each metal trace 121 that is located within the laser cut region 1021.

In the present application, the display panel 100 includes a substrate 110, a first metal layer 120, and a second metal layer 130. Since the laser cutting area 1021 is located in the fan-out area 102a and intersects the data line 1011, and the metal trace 121 connects the data line 1011 and the pad area 102b, the metal trace 121 intersects the laser cutting area 1021. In this way, when the cover plate is cut, the front projection of the cutting line on the cover plate on the display panel 100 is located in the laser cutting area 1021, and the position of the metal trace 121 corresponding to the cutting line on the first section 1211 located in the laser cutting area 1021 is easily cut off or easily broken by the cover plate fragments. Thus, the present application provides a second metal layer 130 on a side of the first metal layer 120 facing away from the substrate 110, the orthographic projection of the second metal layer 130 on the substrate 110 covering at least a portion of the first section 1211. When the cover plate is cut, the position on the first section 1211 of the metal trace 121 corresponding to the cutting line may be blocked by the second metal layer 130, so that the probability of breakage and virtual connection of the metal trace 121 due to cutting or scratching by fragments of the cover plate may be reduced, thereby facilitating improvement of the production yield of the display panel 100 while ensuring the display effect.

In some embodiments, as shown in fig. 4 and 5, the orthographic projection of the second metal layer 130 on the substrate covers the entire first section 1211. In this way, even if the overlay and the display panel 100 have an alignment error, the orthographic projection of the cutting line on the overlay on the display panel 100 is also located in the laser cutting area 1021, so that the second metal layer 130 can still form protection for the first section 1211, thereby being beneficial to improving the reliability of the metal trace 121.

In some embodiments, as shown in fig. 6, the second metal layer 130 includes a first power signal line 131, the first power signal line 131 being configured to provide a power signal to the display panel 100, a front projection of the first power signal line 131 on the substrate 110 covering the first section 1211. In this embodiment, the second metal layer 130 includes a first power signal line 131. Since the first power signal line 131 needs to be electrically connected to the pad region 102b. Therefore, the first power signal line 131 also needs to pass through the fan-out area 102a. In this way, the first section 1211 is shielded by the first power signal line 131, which is advantageous in improving convenience in shielding the first section 1211 of the metal wire 121 by the first power signal line 131. Alternatively, the first power signal line may be a cathode signal line, thereby providing a cathode signal to a cathode of the light emitting device.

Specifically, as shown in fig. 6, the first power signal line 131 includes a first body portion 1311 located in the fan-out area 102a and a plurality of first power traces 1312 connected to the first body portion 1311, and the first power traces 1312 extend from the fan-out area 102a to the display area 101 and are arranged at intervals from the data lines 1011. An orthographic projection of the first body portion 1311 onto the substrate 110 covers the first section 1211.

The present embodiment proposes a specific structure in which the first power signal line 131 shields the first section 1211 of the metal trace 121. As shown in fig. 6, the first power signal line 131 includes a first body 1311 and a plurality of first power traces 1312, and each of the plurality of first power traces 1312 is connected to the first body 1311. The plurality of first power traces 1312 are arranged in the display area 101 at intervals from the data lines 1011 so as to supply power signals to the pixel circuits in the display area 101 without overlapping the data lines 1011. The first body 1311 is located in the fan-out area 102a, and the first body 1311 functions to connect the plurality of first power traces 1312 on the one hand and to connect the pad area 102b on the other hand, so that the convenience of connecting the first body 1311 to the pad area 102b can be improved.

In this embodiment, the orthographic projection of the first body portion 1311 on the substrate 110 covers the first section 1211. That is, the first body portion 1311 has a plate-like structure, and thus, the first body portion 1311 of the first power signal line 131 only needs to be extended a distance in the first direction X until it covers the first section 1211 of the metal trace 121, so that the first section 1211 of the metal trace 121 is shielded by the first power signal line 131 without an additional step and only by increasing the coverage area of the first body portion 1311 when the first body portion 1311 is manufactured. In this way, the probability of breakage and virtual connection of the metal trace 121 due to cutting or scratching by fragments of the cover plate is reduced without increasing the manufacturing cost of the display panel 100, and the production yield of the display panel 100 is improved while the display effect is ensured.

In some embodiments, the data line 1011 and the first power signal line 131 are located at different layers, and the data line 1011 and the metal trace 121 are located at the same layer. In this way, on the one hand, the data line 1011 and the metal trace 121 do not need to be connected through a via hole, thereby being beneficial to improving the connection convenience of the data line 1011 and the metal trace 121. In the second aspect, the data line 1011 and the first power signal line 131 are located in different layers, so that when the first power signal line 131 shields the first section 1211 of the metal trace 121, a space reserved for the first power signal line 131 to be arranged is larger, and thus the convenience of wiring the first power signal line 131 is further improved.

In some embodiments, as shown in fig. 7, the second metal layer 130 includes a first power signal line 131 and a metal trace protection block 132, the first power signal line 131 includes a first body portion 1311 located in the fan-out area 102a and a plurality of first power traces 1312 connected to the first body portion 1311, the first power traces 1312 extend from the fan-out area 102a to the display area 101 and are arranged at intervals from the data lines 1011, and a front projection of the metal trace protection block 132 on the substrate 110 covers the first section 1211.

In this embodiment, the second metal layer 130 includes a first power signal line 131 and a metal trace protection block 132, and an orthographic projection of the metal trace protection block 132 on the substrate 110 covers the first section 1211. That is, one metal trace protection block 132 is separately prepared in the second metal layer 130 to shield the first section 1211 of each metal trace 121. In this way, the protection of the first section 1211 of the metal wire 121 can be achieved, so that the probability of breakage and virtual connection of the metal wire 121 due to cutting or scratching by fragments of the cover plate can be reduced, and the production yield of the display panel 100 can be improved while the display effect is ensured.

In the present application, the first power signal line 131 may be one of a VDD (high level) power signal line and a VSS (low level) power signal line. That is, the second metal layer 130 may further include a second power signal line (not shown). One of the first power signal line 131 and the second power signal line is a VDD (high level) power signal line, and the other is a VSS (low level) power signal line. The light emitting element comprises an anode, a cathode and a light emitting functional layer arranged between the anode and the cathode, the VDD power supply signal line supplies a high-level voltage signal to the anode of the light emitting element, and the VSS power supply signal line supplies a low-level voltage signal to the cathode of the light emitting element.

In some embodiments, the metal trace protection block 132 is connected to a fixed potential. Since the metal wiring protection block 132 alone does not have a channel for discharging charges, the metal wiring protection block 132 is prone to accumulate static electricity during a long-time use of the display panel 100, thereby causing a static breakdown phenomenon of the display panel 100 and damaging components in the display panel 100. Thus, the present embodiment connects the metal wiring protection block 132 to a fixed potential to form a circuit path, thereby contributing to an improvement in reliability of the display panel 100. Alternatively, the metal wiring protection block 132 may be connected to the first power signal line 131 or the second power signal line, thereby obtaining a high level voltage signal or a low level voltage signal.

In some embodiments, as shown in fig. 8, the display panel 100 further includes an inorganic insulating layer 140 between the first metal layer 120 and the second metal layer 130, and an orthographic projection of the inorganic insulating layer 140 on the substrate 110 covers the metal traces 121. By disposing the inorganic insulating layer 140, the metal wire 121 is covered by the orthographic projection of the inorganic insulating layer 140 on the substrate 110, so that the inorganic insulating layer 140 can form a first layer of protection for the metal wire 121 to isolate water and oxygen. The second metal layer 130 may form a second protection layer for the metal wire 121, so as to reduce the probability of breakage and virtual connection of the metal wire 121 due to being cut or scratched by fragments of the cover plate. In addition, since the temperature of the laser cutting is higher, the inorganic insulating layer 140 is not carbonized when being cut by the laser, compared with the organic insulating layer, so that the problem of film detachment of the inorganic insulating layer 140 can be avoided, and the reliability of the display panel 100 can be improved.

Alternatively, as shown in fig. 8, the inorganic insulating layer 140 includes a first inorganic insulating layer 141 covering the metal traces 121 and a second inorganic insulating layer 142 covering the first inorganic insulating layer 141. In this way, the ability of the metal trace 121 to isolate water from oxygen is advantageously further enhanced.

In some embodiments, as shown in fig. 9, the fan-out region 102a includes a first sub-fan-out region 1022 and a second sub-fan-out region 1023 located on both sides of the laser cut region 1021 in the first direction X. Each metal trace 121 also includes a second section 1212 located in the first sub-fan-out region 1022 and a third section 1213 located in the second sub-fan-out region 1023. The first section 1211 comprises at least two first sub-sections 1211a arranged in the second direction Y, the second section 1212 being connected to the third section 1213 by the first sub-sections 1211a.

In this embodiment, along the direction of the display area 101 pointing to the fan-out area 102a, the fan-out area 102a includes a first sub-fan-out area 1022, a laser cutting area 1021, and a second sub-fan-out area 1023 in sequence. Correspondingly, the metal trace 121 comprises a second section 1212 located in the first sub-fan-out region 1022, a first section 1211 located in the laser cut area 1021, and a third section 1213 located in the second sub-fan-out region 1023. The first section 1211 comprises at least two first sub-sections 1211a arranged in the second direction Y, i.e. the first section 1211 is divided into a plurality of sub-branches. Thus, only any one of the plurality of sub-branches needs to be ensured not to be cut off, so that normal signal transmission of the metal wire 121 can be realized. In this way, the probability of breakage and virtual connection of the metal wires 121 due to cutting or scratching by fragments of the cover plate is further reduced, and the production yield of the display panel 100 is improved while the display effect is ensured. In the present embodiment, at least two first sub-sections 1211a means that the first section 1211 may be divided into two sub-branches, or may be more than two sub-branches, which is not limited in the present application. Preferably, as shown in fig. 9, the first section 1211 includes three first sub-sections 1211a arranged in the second direction Y.

An embodiment of the second aspect of the present application proposes a display device comprising the display panel 100 of the first aspect. The display panel 100 includes a substrate 110, a first metal layer 120, and a second metal layer 130. Since the laser cutting area 1021 is located in the fan-out area 102a and intersects the data line 1011, and the metal trace 121 connects the data line 1011 and the pad area 102b, the metal trace 121 intersects the laser cutting area 1021. In this way, when the cover plate is cut, the front projection of the cutting line on the cover plate on the display panel 100 is located in the laser cutting area 1021, and the position of the metal trace 121 corresponding to the cutting line on the first section 1211 located in the laser cutting area 1021 is easily cut off or easily broken by the cover plate fragments. Thus, the present application provides a second metal layer 130 on a side of the first metal layer 120 facing away from the substrate 110, the orthographic projection of the second metal layer 130 on the substrate 110 covering at least a portion of the first section 1211. When the cover plate is cut, the position on the first section 1211 of the metal trace 121 corresponding to the cutting line may be blocked by the second metal layer 130, so that the probability of breakage and virtual connection of the metal trace 121 due to cutting or scratching by fragments of the cover plate may be reduced, thereby facilitating improvement of the production yield of the display panel 100 while ensuring the display effect.

As shown in fig. 10, an embodiment of the third aspect of the present application proposes a manufacturing method of a display panel 100, which is applied to the display panel 100 of the first aspect. The manufacturing method of the display panel 100 includes:

providing a substrate 110;

fabricating a first metal layer 120 on a substrate 110, the first metal layer 120 including a plurality of metal traces 121 located in a fan-out region 102a, the metal traces 121 configured to connect a data line 1011 to a pad region 102b, the metal traces 121 including a first section 1211 located in a laser cut region 1021;

a second metal layer 130 is fabricated on a side of the first metal layer 120 facing away from the substrate 110, an orthographic projection of a portion of the second metal layer 130 on the substrate 110 covering at least a portion of the first section 1211.

The display panel 100 includes a substrate 110, a first metal layer 120 and a second metal layer 130. The orthographic projection of the second metal layer 130 on the substrate 110 covers at least a portion of the first section 1211. When the cover plate is cut, the position on the first section 1211 of the metal trace 121 corresponding to the cutting line may be blocked by the second metal layer 130, so that the probability of breakage and virtual connection of the metal trace 121 due to cutting or scratching by fragments of the cover plate may be reduced, thereby facilitating improvement of the production yield of the display panel 100 while ensuring the display effect.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (10)

1. A display panel having a display area and a non-display area surrounding the display area, the display area including a plurality of data lines extending in a first direction and arranged at intervals in a second direction, the non-display area including a fan-out area and a pad area located at one side of the display area in the first direction, the fan-out area including a laser cut area extending in the second direction, the first direction intersecting the second direction, the display panel comprising:

a substrate;

a first metal layer on one side of the substrate, the first metal layer including a plurality of metal traces on the fan-out region, the metal trace arrangement connecting the data lines to the pad region, each metal trace including a first section on the laser cut region; and

and a second metal layer positioned on one side of the first metal layer away from the substrate, wherein the orthographic projection of the second metal layer on the substrate covers at least one part of the first section.

2. The display panel of claim 1, wherein an orthographic projection of the second metal layer on the substrate covers the entire first section;

preferably, the second metal layer includes a first power signal line configured to provide a power signal to the display panel, an orthographic projection of the first power signal line on the substrate covering the first section;

preferably, the first power signal line is a cathode signal line.

3. The display panel of claim 2, wherein the first power signal line includes a first body portion located at the fan-out region and a plurality of first power traces connected to the first body portion, the first power traces extending from the fan-out region to the display region and being spaced apart from the data line;

an orthographic projection of the first body portion on the substrate covers the first section.

4. The display panel of claim 2, wherein the data line and the first power signal line are located at different layers, and the data line and the metal trace are located at the same layer.

5. The display panel of claim 1, wherein the second metal layer comprises a first power signal line and a metal trace protection block, the first power signal line comprising a first body portion located in the fan-out region and a plurality of first power traces connected to the first body portion, the first power traces extending from the fan-out region to the display region and being spaced apart from the data line;

an orthographic projection of the metal wire protection block on the substrate covers the first section.

6. The display panel of claim 5, wherein the metal trace protection block is connected to a fixed potential.

7. The display panel of claim 1, further comprising an inorganic insulating layer between the first metal layer and the second metal layer, wherein an orthographic projection of the inorganic insulating layer on the substrate covers the metal traces.

8. The display panel of claim 1, wherein the fanout area comprises a first sub-fanout area and a second sub-fanout area located on both sides of the laser cut area in the first direction;

each metal wire further comprises a second section located in the first sub-fan-out area and a third section located in the second sub-fan-out area, the first section comprises at least two first sub-sections arranged along the second direction, and the second section is connected with the third section through the first sub-sections.

9. A display device comprising the display panel according to any one of claims 1-8.

10. A method for manufacturing a display panel, applied to the display panel according to any one of claims 1 to 8, comprising:

providing a substrate;

fabricating a first metal layer on the substrate, the first metal layer including a plurality of metal traces in the fan-out region, the metal trace arrangement connecting the data lines to the pad region, each of the metal traces including a first section in the laser cutting region;

and manufacturing a second metal layer on one side of the first metal layer, which is away from the substrate, and enabling the orthographic projection of the second metal layer on the substrate to cover at least one part of the first section.