CN108519696B

CN108519696B - Display panel and display device

Info

Publication number: CN108519696B
Application number: CN201810292515.1A
Authority: CN
Inventors: 李敏; 朱家柱
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2021-04-06
Anticipated expiration: 2038-03-30
Also published as: CN108519696A

Abstract

The invention discloses a display panel and a display device, comprising: a display area and a non-display area surrounding the display area; the non-display area includes: a metal layer disposed along an outer edge of the display area; the metal layer is electrically connected with a signal wire with fixed potential; the metal layer is provided with at least one hollow groove; the display area includes: a first corner; the hollow groove is arranged at least along the first corner. Therefore, the anti-static capacity of the display panel can be improved through the arrangement of the hollow groove, so that the display effect of the display panel is improved, and the production yield of products is improved.

Description

Display panel and display device

Technical Field

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

Background

The types of the existing displays include a Liquid Crystal Display (LCD) and an Organic electroluminescent Display (OLED), wherein the LCD is a non-self-luminous Display, and a backlight module is required to provide a backlight source to realize a Display function, so that the development of the LCD in the aspects of ultra-thin and ultra-light is limited; the OLED display is a self-luminous display, so that a backlight module is not needed, and the OLED display has great development advantages in the aspects of ultrathin property and ultra-light property.

At present, with the development of display technology, the requirements for the display effect of a display are increasingly improved; therefore, how to improve the display effect of the display and the manufacturing yield of the display is an important technical problem to be solved urgently.

Disclosure of Invention

The embodiment of the invention provides a display panel and a display device, which are used for improving the display effect of a display and improving the manufacturing yield of the display.

An embodiment of the present invention provides a display panel, including:

a display area and a non-display area surrounding the display area;

the non-display area includes: a metal layer disposed along an outer edge of the display area;

the metal layer is electrically connected with a signal wire with fixed potential; the metal layer is provided with at least one hollow groove;

the display area includes: a first corner;

the hollow-out groove is arranged at least along the first corner.

On the other hand, an embodiment of the present invention further provides a display device, including: the display panel provided by the embodiment of the invention.

The invention has the following beneficial effects:

the embodiment of the invention provides a display panel and a display device, comprising: a display area and a non-display area surrounding the display area; the non-display area includes: a metal layer disposed along an outer edge of the display area; the metal layer is electrically connected with a signal wire with fixed potential; the metal layer is provided with at least one hollow groove; the display area includes: a first corner; the hollow groove is arranged at least along the first corner. Therefore, the anti-static capacity of the display panel can be improved through the arrangement of the hollow groove, so that the display effect of the display panel is improved, and the production yield of products is improved.

Drawings

Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 3 is a third schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 4 is a fourth schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 5 is a fifth schematic view illustrating a structure of a display panel according to an embodiment of the present invention;

FIG. 6 is a sixth schematic structural view of a display panel according to an embodiment of the present invention;

fig. 7 is a seventh schematic structural diagram of a display panel according to an embodiment of the present invention;

fig. 8 is an eighth schematic structural diagram of a display panel according to an embodiment of the present invention;

FIG. 9 is an enlarged partial schematic view within the dashed box shown in FIG. 8;

fig. 10 is a schematic structural diagram of a display device provided in an embodiment of the present invention.

Detailed Description

A detailed description will be given below of a display panel and a display device according to an embodiment of the present invention with reference to the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The inventor finds in research that, in the array substrate of the current OLED display panel, an encapsulation Metal layer (Frit Metal) is generally disposed in a non-display region, and the encapsulation Metal layer is disposed along an outer edge of the display region and grounded to improve laser utilization rate and simultaneously play a role of static electricity prevention.

However, the inventors have also found that static charge is more likely to accumulate at the corners of the display panel due to the higher density of the face charge at the corners; therefore, through the action of electrostatic induction, induced charges are generated on one side of the packaging metal layer close to the driving circuit, so that an electric field is generated between one side of the packaging metal layer close to the driving circuit and the driving circuit; along with the accumulation of static charge, the induced charge of one side of the packaging metal layer close to the driving circuit is increased, if the gathering speed of the induced charge is high, and when the induced charge cannot be conducted out quickly through the grounding arrangement, electrostatic breakdown is easily caused, the packaging metal layer and the driving circuit are damaged, the normal work of the driving circuit is influenced, the performance of the packaging metal layer is influenced, the display effect of the display panel is further influenced, and meanwhile, the manufacturing yield of the display panel is also influenced.

Accordingly, the embodiment of the invention provides a display panel, which is used for improving the display effect of the display panel and improving the manufacturing yield of the display panel.

Specifically, an embodiment of the present invention provides a display panel, as shown in fig. 1 to 8, which may include:

a display region 10 and a non-display region surrounding the display region 10 (both regions other than the dotted line frame 10 are non-display regions);

the non-display area includes: a metal layer 20 disposed along an outer edge of the display area 10;

the metal layer 20 is electrically connected to a signal line S0 having a fixed potential; the metal layer 20 has at least one hollow-out groove 30;

the display area 10 includes: a first corner (e.g., a1 or b 1);

the hollow-out groove 30 is disposed along at least a first corner (e.g., a1 or b 1).

According to the display panel provided by the embodiment of the invention, through the arrangement of the hollow-out grooves 30 in the metal layer 20, induced charges of static charges can be effectively prevented from being completely and directly acted on one side of the metal layer close to the display area, but the induced charges are respectively acted on all parts of the metal layer separated by the hollow-out grooves layer by layer through the spacing action of the hollow-out grooves, so that the electrostatic discharge capacity of the metal layer 20 is increased, the induced charges acted on one side of the metal layer close to the display area are effectively reduced, an electric field between the metal layer and a driving circuit (between the metal layer and the display area) is weakened, the electrostatic prevention capacity of the metal layer 20 is improved, the electrostatic prevention capacity of the display panel is improved, the display effect of the display panel is improved, and the manufacturing yield of products is improved.

It should be noted that, in the embodiment of the present invention, the hollow-out groove 30 is disposed at least along the first corner (e.g. a1 or b1), and it can be understood that: the shape of the hollow-out groove 30 at the corner position may be parallel to the corresponding corner (as shown in fig. 2 to 8), or the shape of the hollow-out groove 30 at the corner position may not be parallel to the corresponding corner (as shown in fig. 1); for example, when the first corner is a right-angled corner, the shape of the hollow groove 30 at the first corner may be a right-angled shape, or may be a non-right-angled shape; or, when the first corner is a non-right corner, the shape of the hollow groove 30 at the first corner may be the same as the first corner, or may be different from the first corner; therefore, in the embodiment of the present invention, the specific shape of the hollow-out groove is not limited as long as the capability of the metal layer 20 to discharge static charge can be increased through the hollow-out groove 30, and the anti-static capability of the metal layer 20 can be further improved.

It should be further noted that the metal layer 20 mentioned in the embodiment of the present invention may be a closed structure disposed along the outer edge of the display area 10, as shown in fig. 1 and fig. 3 to fig. 8, and of course, the metal layer 20 is not limited thereto, and may also be a non-closed structure disposed along the outer edge of the display area 10, as shown in fig. 2, that is, the metal layer 20 is made of multiple segments of metal, and the number of metal segments included in the metal layer 20 is not limited to two segments shown in fig. 2, and may also be three, four, or five segments, and the like, and is not limited thereto.

In a specific implementation, the shape of the display panel may be a rounded rectangle, as shown in fig. 8, where the first corner may be denoted by b1, and in addition to the first corner (b1), the second corner (denoted by b2), the third corner (denoted by b3), and the fourth corner (denoted by b4) are included; as shown in fig. 8, the hollow grooves 30 are not only disposed along the first corner (b1), but also disposed along the second corner (b2), the third corner (b3) and the fourth corner (b4), that is, the hollow grooves 30 shown in fig. 8 are closed hollow grooves, and two such closed hollow grooves are provided, and the metal layer 20 is split into three split regions, which are a, b and c, respectively, and the split regions are grounded, respectively, so that the split regions can release static charges, thereby improving the static electricity prevention capability of the metal layer.

Of course, when the shape of the display panel is a rounded rectangle, the arrangement manner of the hollow groove 30 is not limited to that shown in fig. 8, and other manners capable of improving the antistatic capability of the metal layer may be used, which is not limited herein.

In addition, the shape of the display panel is not limited to that shown in fig. 8, and may be other shapes other than a rounded rectangle; for example, in the embodiment of the present invention, as shown in fig. 1 to 7, the display area 10 may include: two first display regions a1 and one second display region a 2; the two first display regions a1 are located on the same side of the second display region a 2; the two first display regions a1 have a middle region B0 therebetween; the middle area B0 belongs to the non-display area; the first corner (a1) may be a corner of the first display area a1 on a side away from the middle area B0 and the second display area a2, respectively. Of course, the first corner (a1) may be a right-angled corner (as shown in fig. 2 and 3) or a non-right-angled corner (as shown in fig. 1, 4 to 7), and is not limited herein.

Specifically, in the embodiment of the present invention, as shown in fig. 1 to 7, the first display region a1 may further include, in addition to the first corner a 1: a second corner (a2) and a third corner (a3) disposed proximate the intermediate region B0; the second display area a2 may further include: a fourth corner (a4) and a fifth corner (a5) disposed away from the first display area a 1; the second corner (a2) to the fifth corner (a5) may be non-right-angle corners, may also be right-angle corners (as shown in fig. 2), and may also be shown in fig. 1, 3 to 7, which is not limited herein.

Alternatively, when the hollow groove 30 is provided, in order to greatly improve the static electricity prevention capability of the display panel, thereby improving the display effect, the hollow groove 30 may be further provided along at least one of the second corner (a2), the third corner (a3), the fourth corner (a4), and the fifth corner (a 5).

For example, referring to fig. 3, the hollow-out groove 30 may be disposed along the first corner (a1) and the second corner (a2), and the hollow-out groove 30 may be connected between the first corner (a1) and the second corner (a2), although the hollow-out groove 30 may be discontinuous (not shown) between the first corner (a1) and the second corner (a2), which is not limited herein; for another example, referring to fig. 4, the hollow-out groove 30 may be disposed along the first corner (a1), the second corner (a2) and the third corner (a3), and the hollow-out groove 30 may be connected or discontinuous between the first corner (a1), the second corner (a2) and the third corner (a3) (not shown); for another example, referring to fig. 5, the hollow-out groove 30 may be disposed along the first corner (a1), the second corner (a2), the third corner (a3) and the fourth corner (a4), and the hollow-out groove 30 may be connected or discontinuous between the first corner (a1), the second corner (a2), the third corner (a3) and the fourth corner (a4) (not shown); for another example, referring to fig. 6, the hollow-out groove 30 is disposed along the first corner (a1), the second corner (a2), the third corner (a3), the fourth corner (a4) and the fifth corner (a5), and at this time, the hollow-out groove 30 may be an open hollow-out groove disposed around the display area 10 (as shown in fig. 6).

Of course, in the embodiment of the present invention, in order to maximally improve the anti-static capability of the display panel, thereby improving the display effect of the display panel, as shown in fig. 7 and 8, the hollow groove 30 may be a closed hollow groove disposed around the display area 10. At this time, the metal layer 20 can be split into a plurality of split areas through the closed hollow-out grooves, and the split areas are independent of each other, so that the split areas need to be electrically connected with signal lines with fixed potentials, static charges can be released from the split areas, the anti-static capacity of the metal layer 20 is improved, and the anti-static capacity of the display panel is improved.

In addition, referring to fig. 6, the hollow-out groove 30 is a non-closed hollow-out groove disposed around the display area 10, and at this time, in order to increase the capability of the metal layer 20 to discharge static charges, the spacing portions formed by the non-closed hollow-out grooves in the metal layer 20 may be grounded or electrically connected to the signal line S0, respectively, so as to improve the anti-static capability of the metal layer 20.

In the embodiment of the present invention, when each split region is electrically connected to the signal line S0 with a fixed potential, the signal line S0 may be a ground signal line or a low-potential signal line; in addition, among the splitting areas split by the hollow groove 30, a part of the splitting areas can be electrically connected with the grounding signal line, and the other part of the splitting areas is electrically connected with the low potential signal line; referring to fig. 7, if the signal line S0 is a low potential signal line, the split region close to the display region 10 is electrically connected to the low potential signal line, and the split region far from the display region 10 is grounded, so that static charge is discharged through the two split regions; alternatively, all the split areas are electrically connected to the ground signal line (as shown in fig. 8); or, all the splitting areas are electrically connected with the low-potential signal line; as long as it can be ensured that the static charges in each partition area can be released through the signal lines, the anti-static capability of the metal layer 20 is improved, the display effect of the display panel is further improved, and the production yield of the product is improved, which is not limited herein.

Of course, when each of the split regions is electrically connected to the signal line S0 or the metal layer 20 is electrically connected to the signal line S0, in order to enable the metal layer 20 (or the split region) to discharge static charge relatively quickly, the metal layer 20 (or the split region) may be electrically connected to the signal line S0 at a plurality of positions, as shown in fig. 1 to 8, so as to improve the static electricity prevention capability of the metal layer 20. However, in the specific implementation, when the metal layer 20 (or the split region) is electrically connected to the signal line S0 at a plurality of positions, the positions and the number of the signal lines S0 are not limited to those shown in fig. 1 to 8, as long as the metal layer 20 (or the split region) can rapidly discharge static charges, and the static electricity prevention capability is improved, and the present invention is not limited thereto.

In specific implementation, in the embodiment of the present invention, the metal layer 20 may have one closed hollow-out groove, as shown in fig. 7, of course, the metal layer 20 may also have a plurality of closed hollow-out grooves, as shown in fig. 8, and when the metal layer 20 has a plurality of closed hollow-out grooves, the closed hollow-out grooves are independent from each other; with such an arrangement, induced charges firstly act on a through the action of electrostatic induction in each splitting area, such as splitting areas a, b and c shown in fig. 8, split by the closed hollow-out groove in the metal layer 20, and a part of electrostatic charges can be discharged through a because a, b and c are all grounded; similarly, a part of the static charge can be discharged again by b and c respectively; therefore, through the three splitting areas (a, b and c), static charges can be gradually and effectively released, so that the closer to the splitting area of the display area 10, the less the residual static charges are, the electrostatic breakdown is effectively avoided, and the driving circuit m (shown in fig. 9) between the display area 10 and the metal layer 20 is protected, thereby being beneficial to improving the display effect of the display panel and improving the production yield of products.

Of course, the description is given only by taking the example with three splitting regions as shown in fig. 8, but it is not described that the metal layer 20 in the embodiment of the present invention can be split into only three splitting regions.

Furthermore, the hollow-out groove 30 is arranged in the metal layer 20, so that the electrostatic discharge capacity of the metal layer 20 is improved, and the driving circuit m between the display area 10 and the metal layer 20 is effectively protected, therefore, on the basis, the distance between the driving circuit m and the metal layer 20 can be reduced, the occupied area of the frame is reduced, the anti-electrostatic capacity is improved, meanwhile, the design of a narrow frame is realized, and the display effect is improved; based on this, in the embodiment of the present invention, as shown in a partially enlarged view in fig. 9, the non-display region may further include: when the driving circuit m is disposed between the metal layer 20 and the display region 10, the distance W between the metal layer 20 (i.e., the splitting region c close to the display region 10) and the driving circuit m may be between 3 micrometers and 100 micrometers. The inventors have conducted extensive studies and found that the relationship between the distance between the metal layer 20 and the driving circuit m and the capability of the display effect to be improved is shown in table 1.

TABLE 1

Distance between the metal layer and the driving circuit	Capability of improving display effect
		1 micron	Difference (D)
2 micron	Difference (D)
		3 micron	Good wine
20 micron	Good wine
		40 micron	Superior food
60 micron	Superior food
		80 micron	Good wine
100 micron	Good wine
		150 micron	Difference (D)
200 micron	Difference (D)

Referring to table 1, the researchers found that the ability to improve the display effect can be understood as: whether the narrow frame design is facilitated or not and whether the anti-static capability is improved or not are facilitated; with the increase of the distance W between the metal layer 20 and the driving circuit m, the risk of electrostatic breakdown of the driving circuit m can be gradually reduced, but the area of the frame occupied by the driving circuit m also increases, and vice versa; therefore, when the distance W between the metal layer 20 and the driving circuit m is between 3 micrometers and 100 micrometers, the risk that the driving circuit m is subjected to electrostatic breakdown can be greatly reduced, the occupied area of the frame is also reduced, and the display effect is greatly improved.

Specifically, whether one closed hollow-out groove or a plurality of closed hollow-out grooves are formed in the metal layer 20, the width of each split area split by the closed hollow-out groove in the metal layer 20 may be not less than 1 micrometer; the widths of the splitting areas may be equal, and certainly may not be equal, which is not limited herein. The inventors have intensively studied and found that the relationship between the width of the splitting region and the improved antistatic ability is shown in table 2.

TABLE 2

Width of the splitting region	Improve the antistatic ability
		0.1 micron	Difference (D)
0.5 micron	Difference (D)
		1 micron	Good wine
5 micron	Good wine
		10 micron	Superior food
20 micron	Superior food
		50 micron	Superior food

Referring to table 2, the researchers found that the ability to improve the antistatic property can be understood as: whether it is advantageous to reduce the manufacturing difficulty and whether it is advantageous to increase the amount of static charge discharged; wherein, on the basis that the width of fretwork groove keeps unchangeable, along with the increase of the width in split region, the preparation degree of difficulty can reduce gradually, nevertheless can make the regional share of split reduce gradually for the volume of the static charge of release reduces gradually, and then makes antistatic capacity reduce gradually. However, although the number of parts of the splitting region is gradually reduced along with the increase of the width of the splitting region, the metal layer provided with the hollowed-out grooves still has excellent antistatic capability compared with the metal layer not provided with the hollowed-out grooves; therefore, on the basis that the width of the hollow groove is kept unchanged, when the width of the splitting area is not less than 1 micrometer, the manufacturing difficulty can be reduced, the amount of released static charges can be increased, and the anti-static capacity is greatly improved.

Further, when the widths of the split areas are not equal, the split area with the smallest width needs to be disposed close to the display area 10, as shown in fig. 8, in the split areas a, b, and c, the width of c is smallest, so that c is disposed close to the display area 10; this is due to: since the divided region having the smallest width has a larger resistance, the divided region has a smaller ability to discharge static charge than the divided region having a larger width, and thus, if the divided region having the smallest width is disposed on the side away from the display region 10, the capability of discharging static charge is limited, and the capability of discharging static charge of the entire metal layer 20 is impaired; if the split region having the smallest width is provided on the side close to the display region 10, since the split region on the side far from the display region 10 has already discharged the electrostatic charge to a large extent, even if the split region having the smallest width has a limited ability to discharge the electrostatic charge, the ability to discharge the electrostatic charge to the entire metal layer 20 is not greatly affected; moreover, because the width of the split region with the smallest width is limited, the manufacturing difficulty is increased, and the split region with the smallest width may be broken to influence the capability of releasing static charge, so that the split region with the smallest width is arranged close to the display region 10, and the influence of the occurrence of the problems on the capability of releasing static charge of the whole metal layer 20 can be effectively reduced; therefore, the split area with the smallest width is arranged close to the display area 10, so that the reliability of the metal layer 20 is improved, and the metal layer 20 is ensured to have excellent anti-static capability.

In specific implementation, in the embodiment of the present invention, in order to improve the anti-static capability of the metal layer 20, the width of the hollow groove 30 may be not less than 0.1 μm, so that the anti-static capability of the metal layer 20 may be effectively improved; moreover, the larger the width of the hollow groove 30 is, the larger the anti-static capability of the metal layer 20 is, so in the embodiment of the present invention, the upper limit of the width of the hollow groove 30 is not specifically limited, and may be determined according to a specific actual situation when the embodiment is specifically implemented.

Alternatively, in the embodiment of the present invention, the width of the hollow groove 30 may be not less than 1 μm. The inventors have found, through intensive studies, that the relationship between the width of the hollow-out groove 30 and the improved antistatic ability is shown in table 3; in a specific implementation, when the metal layer 20 has a plurality of hollow-out grooves 30, the widths of the hollow-out grooves 30 may be equal to each other, or certainly may not be equal to each other, and the disclosure is not limited thereto.

Referring to table 3, the researchers found that the ability to improve the antistatic property can be understood as: whether the manufacturing difficulty is reduced or not and whether the antistatic capability is improved or not are facilitated; the manufacturing difficulty is gradually reduced along with the increase of the width of the hollow groove, and the anti-static capacity is gradually increased; therefore, when the width of the hollow groove is not less than 0.1 micrometer, the manufacturing difficulty can be reduced, and the amount of released static charges can be increased, so that the anti-static capacity is greatly improved.

It should be noted that, when there are a plurality of closed hollow-out grooves in the metal layer 20, the shape, width, and number of parts of each split region among the plurality of split regions split by the closed hollow-out grooves are all the same

TABLE 3

Width of the hollow groove	Improve the antistatic ability
		0.05 micron	Difference (D)
0.1 micron	Good wine
		0.5 micron	Good wine
1 micron	Superior food
		5 micron	Superior food
10 micron	Superior food
		20 micron	Superior food

This may be done in practice and is not limited to the illustration in fig. 7 and 8.

It should be noted that, in the embodiment of the present invention, when the display panel is an electroluminescent display panel, the metal layer may be a package metal layer, and the package metal layer not only can improve the laser utilization rate of the electroluminescent display panel during packaging, but also can effectively improve the anti-static capability of the electroluminescent display panel.

In addition, in the related art at present, in order to increase the packaging effect, generally, discrete holes (e.g. k in fig. 1) are provided in the package metal layer, and the size of the holes k may be the same or different, which may be determined according to specific practical situations; it should be noted that the hollow-out grooves 30 mentioned in the embodiments of the present invention are different from the discrete holes k in the prior art, and the hollow-out grooves 30 in the present invention are different from the holes k in the prior art in terms of shape and length, as shown in fig. 1, wherein the hollow-out grooves 30 are larger than the size of the holes k, so that the hollow-out grooves 30 can be disposed at least along the first corner (a1), while a single hole k cannot be disposed at least along the first corner (a1) due to the shape limitation. In addition, although the hole k may play a certain role in preventing static electricity, the role that it can play is very limited, and the hollow groove 30 in the embodiment of the present invention can greatly improve the static electricity preventing capability of the metal layer 20, thereby greatly improving the display effect of the display panel.

Certainly, when the display panel is a liquid crystal display panel, the metal layer mainly functions as an antistatic layer, so as to improve the display effect of the liquid crystal display panel and improve the production yield of products.

Based on the same inventive concept, an embodiment of the present invention further provides a display device, as shown in fig. 10, which may include: the display panel 100 according to the embodiment of the present invention is provided. The display device may be: any product or component with a display function, such as a mobile phone (as shown in fig. 10), a tablet computer, a television, a display, a notebook computer, a digital photo frame, and a navigator. The display device can be implemented by referring to the above embodiments of the display panel, and repeated descriptions are omitted.

The embodiment of the invention provides a display panel and a display device, comprising: a display area and a non-display area surrounding the display area; the non-display area includes: a metal layer disposed along an outer edge of the display area; the metal layer is electrically connected with a signal wire with fixed potential; the metal layer is provided with at least one hollow groove; the display area includes: a first corner; the hollow groove is arranged at least along the first corner. Therefore, the capacity of the metal layer for releasing static electricity can be increased through the arrangement of the hollow groove, the anti-static capacity of the metal layer is improved, the anti-static capacity of the display panel is further improved, the display effect of the display panel is improved, and the production yield of products is improved.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A display panel, comprising:

a display area and a non-display area surrounding the display area;

the display area includes: a first corner;

the hollow groove is at least arranged along the first edge;

the display panel is an electroluminescent display panel;

the metal layer is a packaging metal layer.

2. The display panel of claim 1, wherein the display area comprises: two first display areas and one second display area; the two first display areas are positioned on the same side of the second display area; a middle area is arranged between the two first display areas; the middle area belongs to the non-display area;

the first corner is a corner on one side of the first display area, which is far away from the middle area and the second display area respectively.

3. The display panel of claim 2, wherein the first display region further comprises: a second corner and a third corner disposed proximate the intermediate region;

the second display area further includes: a fourth corner and a fifth corner disposed away from the first display area;

the hollow groove is further disposed along at least one of the second corner, the third corner, the fourth corner, and the fifth corner.

4. The display panel of claim 1, wherein the hollow-out groove is a closed hollow-out groove disposed around the display area.

5. The display panel according to claim 4, wherein the metal layer has a plurality of the closed via-grooves;

the closed hollow-out grooves are mutually independent.

6. The display panel according to claim 4, wherein in each split area split by the closed hollow groove in the metal layer, the width of the split area is not less than 1 micron.

7. The display panel according to claim 6, wherein the splitting region having the smallest width is disposed near the display region.

8. The display panel according to claim 1, wherein the signal line is a ground signal line or a low potential signal line.

9. The display panel of claim 1, wherein the width of the hollow-out groove is not less than 0.1 micron.

10. The display panel of claim 9, wherein the width of the hollow-out groove is not less than 1 micron.

11. The display panel according to claim 1, wherein the non-display area further comprises: the driving circuit is arranged between the metal layer and the display area;

the distance between the metal layer and the driving circuit is between 3 micrometers and 100 micrometers.

12. A display device, comprising: the display panel of any one of claims 1-11.