CN113161401A

CN113161401A - Display panel and display device

Info

Publication number: CN113161401A
Application number: CN202110435887.7A
Authority: CN
Inventors: 李雪
Original assignee: Wuhan Tianma Microelectronics Co Ltd
Current assignee: Wuhan Tianma Microelectronics Co Ltd
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-07-23
Anticipated expiration: 2041-04-22
Also published as: CN113161401B

Abstract

The invention discloses a display panel and a display device, belonging to the technical field of display, wherein the display panel comprises a display area and a non-display area, and the non-display area is at least partially arranged around the display area; the non-display area comprises a bending area and a binding area, and the bending area is positioned between the binding area and the display area along the first direction; the display panel comprises a plurality of signal lines, wherein the signal lines at least comprise a first subsection positioned in the bending area; the display panel at least comprises a first area, and at least part of the bending area is positioned in the first area; the display panel further comprises a first shielding ring positioned in the first area, and at least one first sub-segment is positioned in the first shielding ring along the thickness direction of the display panel. The display device comprises the display panel. The first shielding ring plays a role in shielding an electric field, and avoids the corrosion influence of an external electric field on the first subsegment in the first shielding ring, so that the probability of corrosion problems in a bending area can be reduced, and the signal transmission effect and the display quality are 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

Flexible devices are becoming more and more widely used in modern life. Flexible electronic devices, especially flexible display panels, are increasingly receiving attention from people due to their characteristics of being light and thin, bendable or even foldable, and good in mechanical properties. With the development of flexible display technology, flexible display devices have become the development trend of future display terminals. The flexible display panel is usually manufactured on a flexible carrier, and due to the bending characteristic of the flexible display panel, the design that four sides are narrow frames is facilitated.

In the existing flexible display, in order to improve the screen occupation ratio of a display area and reduce the edge width below the display area, an area on a flexible substrate, which is bound with a control chip, is bent to the back of the display area. Bending a Bending Area (Bending Area) of the flexible display device, and further Bending a non-display Area of the flexible display screen, namely, a routing and binding Area to the back of the flexible display screen, so that the width of a frame of the display screen is reduced, the narrow frame design of the binding Area is realized, and the screen occupation ratio is increased.

In the present conventional design, after the flexible display screen is powered on, because some factors, such as impedance sudden change caused by via wire changing, residual impurities in the process of manufacturing, external water and oxygen entering, electric field action and other influencing factors, easily cause the phenomenon of metal layer corrosion to occur in a bending area, and under the promotion action of a strong electric field, the corrosion problem is aggravated more easily, and then the problems of poor signal transmission and influence on display quality of the metal layer are caused.

Therefore, it is an urgent technical problem to provide a display panel and a display device capable of reducing the aggravation of the corrosion problem caused by the electric field, further reducing the probability of the occurrence of the corrosion phenomenon of the metal layer, and improving the signal transmission effect.

Disclosure of Invention

In view of the above, the present invention provides a display panel and a display device to solve the problem in the prior art that a metal layer in a bending region is easy to corrode, which affects signal transmission.

The invention discloses a display panel, comprising: the display device comprises a display area and a non-display area, wherein the non-display area is at least partially arranged around the display area; the non-display area comprises a bending area and a binding area, and the bending area is positioned between the binding area and the display area along the first direction; the display panel comprises a plurality of signal lines, wherein the signal lines at least comprise a first subsection positioned in the bending area; the display panel at least comprises a first area, and at least part of the bending area is positioned in the first area; the display panel further comprises a first shielding ring positioned in the first area, and at least one first sub-segment is positioned in the first shielding ring along the thickness direction of the display panel.

Based on the same inventive concept, the invention also discloses a display device, which comprises the display panel.

Compared with the prior art, the display panel and the display device provided by the invention at least realize the following beneficial effects:

the display panel comprises a display area and a non-display area, wherein the non-display area comprises a bending area and a binding area, and the bending area is positioned between the binding area and the display area along a first direction. The display panel comprises a plurality of signal lines, various signal lines in the display area extend to the bending area, the bending area is connected to the binding area after being collected, the bending area is bent, at least the binding area of the display panel can be bent to the back of the display panel, and therefore the width of a frame of the display panel is reduced. The signal line at least comprises a first subsection positioned in the bending area, the display panel at least comprises a first area, a first shielding ring can be arranged in the first area, at least one first subsection is positioned in the first shielding ring along the thickness direction of the display panel, the first shielding ring plays a role in shielding an electric field, the aggravation of the corrosion problem of the surrounding electric field to the first subsection in the bending area is weakened by utilizing the principle of electrostatic shielding, the corrosion influence of the external electric field to the first subsection in the first shielding ring is avoided, the probability of the corrosion problem in the bending area can be further reduced, and the signal transmission effect and the display quality are improved.

Of course, it is not necessary for any product in which the present invention is practiced to specifically achieve all of the above-described technical effects simultaneously.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

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

fig. 2 is a schematic plan view of another display panel according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of the first region of FIG. 2;

FIG. 4 is a schematic plan view of another display panel according to an embodiment of the present invention;

FIG. 5 is a partial enlarged view of the non-display area of FIG. 4;

FIG. 6 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;

FIG. 7 is a partial enlarged view of the non-display area of FIG. 6;

FIG. 8 is a schematic diagram of a planar structure of another display panel according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view taken along line M-M' in FIG. 8;

FIG. 10 is a schematic view of another cross-sectional structure taken along line M-M' in FIG. 8;

FIG. 11 is a schematic view of the cross-sectional structure in the direction of N-N' in FIG. 8;

FIG. 12 is an enlarged partial view of the inflection and binding regions of FIG. 6;

FIG. 13 is another enlarged partial view of the inflection and binding regions of FIG. 6;

FIG. 14 is another enlarged partial view of the inflection and binding regions of FIG. 6;

FIG. 15 is another enlarged partial view of the inflection and binding regions of FIG. 6;

fig. 16 is a schematic plan view of a display device according to an embodiment of the present invention.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1 to fig. 3, fig. 1 is a schematic plan view of a display panel according to an embodiment of the present invention, fig. 2 is a schematic plan view of another display panel according to an embodiment of the present invention, fig. 3 is an enlarged view of a portion of a first area in fig. 2, and a display panel 000 according to an embodiment of the present invention includes: a display area AA and a non-display area NA, wherein the non-display area NA is at least partially arranged around the display area AA; the non-display area NA comprises a bending area BA and a binding area BR, and the bending area BA is positioned between the binding area BR and the display area AA along the first direction Y;

the display panel 000 includes a plurality of signal lines 10, and the signal lines 10 at least include a first sub-segment 101 located in the bending area BA; it can be understood that, in the figure of this embodiment, only a part of the signal lines 10 are illustrated, and optionally, the rest of the signal lines 10 except for the first subsection 101 may be located in the display area AA, or may be located in the non-display area NA at the periphery of the display area AA, that is, the signal lines 10 may be scan lines for providing scan driving signals or data lines for providing data voltage signals, or may be other traces at the periphery of the display area AA for providing driving signals for the pixel driving circuit or the gate driving circuit, which is not limited in this embodiment.

The display panel 000 of the present embodiment at least includes a first area BA1, and at least a portion of the bending area BA is located in the first area BA 1; the display panel 000 further includes a first shielding ring 201 positioned in the first area BA1, and at least one of the first subsections 101 is positioned in the first shielding ring 201 along the thickness direction of the display panel 000.

Specifically, the display panel 000 of the present embodiment may be a flexible display panel, and the display panel 000 may include a display area AA and a non-display area NA, where the non-display area NA is at least partially disposed around the display area AA, and is exemplified by the non-display area NA surrounding the display area AA in fig. 1 and 2. The display panel 000 includes a plurality of signal lines 10, and optionally, the signal lines 10 may be scan lines for transmitting scan driving signals or data lines for providing data voltage signals for implementing the display effect of the display panel 000, or other various driving signal lines for implementing the periphery of the display area AA of the display function, and the present embodiment is not limited in particular. The display area AA of the display panel 000 of this embodiment may further include other structures capable of displaying, such as a driving transistor and a pixel unit, and the non-display area NA may also include other peripheral traces capable of implementing the display function, which may be understood with reference to the structure of the display panel in the related art, which is not described in detail in this embodiment.

In the present embodiment, the various signal lines 10 in the display area AA extend to the bending area BA, and are connected to the binding area BR after the bending areas BA are collected. Optionally, the binding region BR may be used to bind a flexible printed circuit board or a driver chip, where the flexible printed circuit board or the driver chip provides a driving signal required by the display panel 000 to implement display, and performs signal transmission through the signal line 10.

The display panel 000 provided in this embodiment may bend the bending area BA, so that at least the bonding area BR of the display panel 000 may be bent to the back side of the display panel 000 (i.e., the side facing away from the light emitting surface of the display panel 000), thereby reducing the frame width of the display panel 000, even if the number of Pixels in the display area AA is increased as the PPI (pixel density, which represents the number of Pixels in a unit area) of the display panel 000 is further increased, the number of the signal lines 10 is also increased, and since the bonding area BR may be bent to the back side of the display panel 000, the frame width of the display panel 000 is not affected, so that the frame width of the display panel 000 provided in this embodiment can be reduced to the greatest extent by bending the bending area BA, and is more suitable for displaying high PPI, and the application range is wider.

The signal line 10 of this embodiment at least includes the first sub-segment 101 located in the bending area BA, and optionally, the first sub-segment 101 of the signal line 10 may be made of a material with a strong bending capability, which may facilitate the first sub-segment 101 to achieve a better bending in the bending area BA, and reduce the possibility of the signal line 10 breaking due to bending.

The display panel 000 of the embodiment at least includes a first area BA1, at least a portion of the bending area BA is located in the first area BA1, a first shielding ring 201 may be disposed in the first area BA1, along a thickness direction of the display panel 000 (i.e., a direction perpendicular to a plane where a light emitting surface of the display panel 000 is located), at least one first sub-section 101 is located in the first shielding ring 201, the first sub-section 101 is not in contact with the first shielding ring 201, so as to avoid short circuit, the first shielding ring 201 may be a closed ring structure made of a conductive material, and plays a role in shielding an electric field.

It can be understood that, in fig. 1 of this embodiment, an example that one first sub-segment 101 is located in the first shielding ring 201 is taken as an example for illustration, but not limited to this, the number of the first sub-segments 101 in the first shielding ring 201 may be set according to actual requirements, and the first sub-segments 101 transmitting the same type of signal may be located in the same first shielding ring 101. As shown in fig. 2 and 3, four exemplary first subsegments 101 are disposed in one first shielding ring 201, for example, signals transmitted by the four first subsegments 101 are all positive voltage signals, or signals transmitted by the four first subsegments 101 are all other types of signals, and the embodiment is not particularly limited.

Optionally, in this embodiment, the signal transmitted on the first sub-section 101 of the signal line 10 and the signal received in the first shielding ring 201 disposed around the first sub-section 101 may be the same type of signal, for example, when the signal transmitted on the first sub-section 101 of the signal line 10 is a positive voltage signal, the signal received in the first shielding ring 201 disposed around the first sub-section 101 is also a positive voltage signal; when the signal transmitted on the first subsection 101 of the signal line 10 is a negative voltage signal, the signal accessed by the first shielding ring 201 arranged around the first subsection 101 is also a negative voltage signal; when the signal transmitted on the first subsection 101 of the signal line 10 is an ac signal, the signal received by the first shielding ring 201 arranged around this first subsection 101 is also an ac signal, the first subsection 101, which is surrounded by the first shielding ring 201, is thus protected by the shielding effect of the first shielding ring 201, from the corrosive influence of the surrounding electric field, namely, the aggravation of the corrosion problem of the first subsection 101 in the bending area BA caused by the surrounding electric field is weakened, so that the probability of the corrosion problem in the bending area BA is reduced, the signal transmission effect and the display quality are improved, and simultaneously, since the signal transmitted on the first subsection 101 of the signal line 10 may be the same type of signal as the signal accessed by the first shield ring 201 disposed around the first subsection 101, so that the electric field between the first screening ring 201 and the first subsection 101 surrounded by it can be further reduced, thereby better reducing the occurrence probability of the corrosion problem of the first sub-section 101 in the bending area BA by the surrounding electric field.

In fig. 1 and 2 of the present embodiment, the signal lines 10 are illustrated only, and the actual number of the signal lines 10 is not shown, and the number of the signal lines 10 in the display panel 000 is not limited to this in the specific implementation. The display panel 000 of this embodiment may further include other structures capable of implementing a display function, which is not described in detail in this embodiment.

Alternatively, as shown in fig. 1, the signal lines 10 on the display panel 000 may be gathered and converged along the second direction X in the bending area BA (the second direction X intersects with the first direction Y in a direction parallel to the plane of the light-emitting surface of the display panel 000, which is exemplified in fig. 1 by the second direction X being perpendicular to the first direction Y), or, as shown in fig. 1 and fig. 2, a first fan-out area SA1 may be included between the display area AA and the first area BA1, a second fan-out area SA2 may be included between the first area BA1 and the binding area BR, after the signal lines 10 come out of the display area AA of the display panel 000, the signal lines may be gathered and converged along the second direction X in the first fan-out area SA1, then enter the bending area BA, and then enter the second fan-out area SA2 for further gathering and converging along the second direction X (as shown in the manner of fig. 1 and fig. 2 schematically illustrating data lines, it can be understood that, fig. 1 and fig. 2 are only illustrated by taking the moving direction of the data line of the display panel from the display area AA to the binding area BR as an example, and it is also only illustrated that the data line is moved close and gathered along the second direction X by adopting an oblique routing manner, and other manners that can be moved close and gathered along the second direction X such as a fold line routing manner may also be adopted, which is not described herein in detail in this embodiment), so that the width of the binding area BR in the second direction X may be reduced, and the reduction of the volume of the flexible circuit board or the drive chip that is subsequently bound is facilitated.

Optionally, the display panel 000 may include a plurality of film layers made of different metal materials, such as a metal film layer where the scan line is located, a metal film layer where the data line is located, a metal film layer where the storage capacitor is located, and the like. The signal lines 10 can be located on different metal film layers in a segmented mode or on the same metal film layer, and because the metal material of some metal film layers is resistant to bending and the metal material of some metal film layers is not easy to bend, if the rest parts of the signal lines 10 are made of materials with strong bending capability, the first subsection 101 of the bending area BA and the rest parts of the signal lines 10 can be arranged on the same film layer; if the rest of the signal line 10 is made of a material that is not easily bent, the first sub-section 101 of the bending area BA may be made of a material having a strong bending capability through the film changing layer, so as to ensure that the material of the first sub-section 101 of the bending area BA is bending-resistant. Fig. 3 of this embodiment is only illustrated by taking an example that the first sub-section 101 of the bending area BA and the rest of different film layers (represented by different filling patterns) of the signal line 10 are arranged, and part of the signal lines located in different film layers are electrically connected through vias, at this time, along the thickness direction of the display panel 000, the first shielding ring 201 arranged around the first sub-section 101 may not overlap with the first sub-section 101, and the first shielding ring 201 arranged around the first sub-section 101 may overlap with the part of the signal line 10 other than the first sub-section 101 and be arranged in different film layers, so that the effect of shielding an electric field is achieved, and meanwhile, the first shielding ring 201 is prevented from contacting and short-circuiting with the signal line 10. It can be understood that, in order to improve the signal transmission effect of the signal lines 10 located in the display area AA and the binding area BR, the signal lines 10 of the display area AA and the binding area BR, such as the data lines, may adopt a double-layer wiring parallel connection mode (not shown in the drawings), for example, at least one data line may be manufactured by connecting two metal film layers, that is, a metal film layer where the scan line is located and a metal film layer where the storage capacitor is located in parallel, so as to achieve the purpose of reducing impedance, and at this time, the metal film layer where the scan line is located and a part of the film layer where the data line is located may be the same metal layer. In this embodiment, the trace film layer disposed on the signal line 10 is not specifically limited, and only the film layer where the first sub-segment 101 in the BA range of the bending area is located has a strong bending capability, so that the bending effect can be achieved.

Optionally, the first shielding ring 201 and the first sub-segment 101 may be located on the same film layer, that is, the first shielding ring 201 and the first sub-segment 101 may be made of the same material as the film layer, and the first shielding ring 201 and the first sub-segment 101 are made of a conductive material with a strong bending capability, which is beneficial to achieving the bending effect of the bending area BA, and at the same time, the manufacturing process may be simplified, and the manufacturing efficiency may be improved.

In some optional embodiments, please continue to refer to fig. 2 and fig. 3 in combination, in this embodiment, the first sub-segment 101 in the first area BA1 is accessed with the first type of signal, and the first shielding ring 201 is accessed with the first shielding signal; the first type of signal is a negative voltage signal and the first mask signal is a negative voltage signal.

The embodiment explains that the first subsection 101 in the first zone BA1 is switched into the first type of signal, and the first shielding ring 201 is switched into the first shielding signal; the first type of signal and the first shielding signal are the same type of signal, for example, when the first type of signal is a dc positive voltage signal, the first shielding signal is also a dc positive voltage signal, when the first type of signal is a dc negative voltage signal, the first shielding signal is also a dc negative voltage signal, and when the first type of signal is an ac signal, the first shielding signal is also an ac signal, so that the first shielding ring 201 plays a role in shielding an electric field, and at the same time, the voltage difference between the electric signal transmitted by the first shielding ring 201 and the electric signal transmitted on the first subsection 101 surrounding the first shielding ring 201 can be reduced as much as possible, so as to reduce the electric field intensity around the first subsection 101, and further reduce the aggravation of the corrosion problem of the first subsection 101 in the bending area BA by the surrounding electric field.

Optionally, the first-type signal is a negative voltage signal, the first shielding signal is a negative voltage signal, when the first subsection 101 in the first area BA1 is connected to the negative voltage signal, if the first shielding ring 201 is not disposed to surround the first subsection 101, under the promotion of an electric field around the first subsection 101, the metal material of the first subsection 101 is prone to generate an electrochemical corrosion reaction, and especially on the first subsection 101 connected to the negative voltage signal, after an electron is precipitated (taking the first subsection 101 as metal aluminum for example, the metal aluminum loses electrons through the electrochemical corrosion reaction), the electron is accumulated and precipitated in the first subsection 101 (which is equivalent to a negative electrode) of the negative voltage signal under the action of the electric field, and the electron and water oxygen will react to generate hydroxyl (OH) radicals^-) Further, electrochemical corrosion reversal occurs, and the corrosion problem is exacerbated. Therefore, in the embodiment, the first shielding ring 201 is arranged around the first subsection 101 connected to the negative voltage signal to shield the electric field around the first subsection 101 of the negative voltage signal, so that the probability of occurrence of the corrosion problem can be better reduced.

In some alternative embodiments, please refer to fig. 4 and 5, fig. 4 is a schematic plan view of another display panel provided in the embodiments of the present invention, fig. 5 is a partially enlarged view of the non-display area in fig. 4, in this embodiment, the display panel 000 further includes at least a second area BA2, the second area BA2 and the first area BA1 are arranged along the second direction X, and at least a portion of the bending area BA is located in the second area BA 2; the first direction Y intersects with the second direction X, and optionally, the first direction Y and the second direction X are perpendicular to each other on a plane parallel to the light emitting surface of the display panel 000;

the second area BA2 includes a second shielding ring 202, and at least one of the first subsections 101 is located in the second shielding ring 202 along the thickness direction of the display panel 000;

the first sub-section 101 in the second area BA2 is switched in the second type of signal, and the second shielding ring 202 is switched in the second shielding signal;

the second type of signal is a positive voltage signal, and the second shielding signal is a positive voltage signal; or the second type signal is an alternating current signal, and the second shielding signal is zero potential.

This embodiment explains that the driving signals in the display panel 000 may have positive voltage signals, negative voltage signals, and some ac signals, so the non-display area NA of the display panel 000 is divided into a plurality of areas, that is, the display panel 000 at least includes a first area BA1 and a second area BA2, the second area BA2 and the first area BA1 are arranged along the second direction X, at least a part of the bending area BA is located in the first area BA1 and the second area BA2, a second shielding ring 202 is arranged in the second area BA2, along the thickness direction of the display panel 000, at least one first sub-segment 101 is located in the second shielding ring 202, at this time, the first sub-segment 101 in the first area BA1 is accessed to the first type of signals, the first shielding ring 201 is accessed to the first shielding signals, the first type of signals is negative voltage signals, the first shielding signals are negative voltage signals, and the first sub-segment 101 in the second area BA2 is accessed to the second type of signals, the second shielding ring 202 is connected to a second shielding signal, and the second type of signal may be a positive voltage signal, and the second shielding signal is a positive voltage signal; or the first subsection 101 in the first area BA1 is connected to a first type of signal, the first shielding ring 201 is connected to a first shielding signal, the first type of signal is a negative voltage signal, the first shielding signal is a negative voltage signal, the first subsection 101 in the second area BA2 is connected to a second type of signal, the second shielding ring 202 is connected to a second shielding signal, the second type of signal is an alternating current signal, and the second shielding signal is at zero potential. In this embodiment, the first subsections 101 in the bending area BA are classified according to the signal types accessed by the first subsections 101, so that the first subsections 101 of the same type (for example, all positive voltage signals, all negative voltage signals, or all alternating current signals) are grouped and arranged, for example, the first subsections 101 in the first area BA1 are all accessed with negative voltage signals, the first shielding ring 201 arranged around the first subsections 101 in the first area BA1 is also accessed with negative voltage signals, the first subsections 101 in the second area BA2 in another area are all accessed with positive voltage signals, the second shielding ring 202 arranged around the first subsections 101 in the second area BA2 is also accessed with positive voltage signals, so that the first shielding ring 201 and the second shielding ring 202 can play a role in electric field shielding in the area, and the voltage difference between the electric signals transmitted by the first shielding ring and the electric signals transmitted on the first subsections 101 around the first shielding ring 201 can be reduced as much as possible, The voltage difference between the electrical signal transmitted by the second shielding ring 202 and the electrical signal transmitted on the first sub-section 101 surrounding the second shielding ring is used to reduce the electric field intensity around the first sub-section 101 accessing different types of signals in the bending area BA, thereby more comprehensively avoiding the corrosion phenomenon in the bending area BA.

In this embodiment, the first sub-segment 101 in the first area BA1 is switched in to a negative voltage signal, then the first shielding ring 201 in the first area BA1 disposed around the first sub-segment 101 is also switched in to a negative voltage signal, while the first sub-segment 101 in the second area BA2 in another area is switched in to an ac signal, the alternative ac signal may be a square wave signal, or may be another type of ac signal that has positive and negative changes with respect to a reference potential (generally, ground potential), and since the ac signal is an alternating high potential and low potential, in general, the second shielding ring 202 disposed around the first sub-segment 101 in the second area BA2 is switched in to a zero potential, so that the second shielding ring 202 plays a role of electric field shielding in the second area BA2, and at the same time, the voltage difference between the electrical signal transmitted by the second shielding ring 202 and the ac signal transmitted on the first sub-segment 101 surrounding it can be reduced as much as possible, so as to weaken the influence of the electric field and avoid the corrosion phenomenon in the bending area BA.

It is understood that the negative voltage signal accessed by the first sub-segment 101 of the first area BA1 in this embodiment may be a driving signal with a negative potential, such as a low voltage signal (VGL), a first-stage Scan start signal (STV1), an emission control output signal (Emit _ Out), or a reference voltage signal (Vref), which is required by the display panel 000 to implement a display function, the positive voltage signal accessed by the first sub-segment 101 of the second area BA2 may be a driving signal with a positive potential, such as a high voltage signal (VGH), a power supply signal (PVDD), or a Scan driving circuit output signal (Scan _ Out), which is required by the display panel 000 to implement a display function, or the ac signal accessed by the first sub-segment 101 of the second area BA2 may be a clock signal, such as a square wave clock signal (CK1, XCK1, 2, and XCK2), which drives the gate driving circuit to operate, but is not limited to the above driving signal, the display device can also be any other driving signals for realizing the display function, and only the first type of signals need to be negative voltage signals, and the second type of signals need to be positive voltage signals or alternating current signals.

In some alternative embodiments, please refer to fig. 4 and 5 in combination, in this embodiment, the signal values of the first type of signal received in the first sub-segment 101 of the first area BA1 at least include a and B, and the signal value of the first shielding signal received in the first shielding ring 201 is C, wherein | a-C ≦ 3, | B-C ≦ 3;

when the second type of signal received in the first sub-section 101 of the second area BA2 is a positive voltage signal and the second shielding signal received in the second shielding ring 202 is a positive voltage signal, the signal values of the second type of signal at least include D and E, the signal value of the second shielding signal is F, wherein | -D-F |. is ≦ 6, and |. E-F ≦ 6.

This embodiment explains that the first sub-section 101 in the first area BA1 is switched in to the negative voltage signal, and the first shield ring 201 arranged around the first sub-section 101 in the first area BA1 is also switched in to the negative voltage signal, when the signal values of the first type of signals include at least a and B, and the signal value of the first shield signal switched in by the first shield ring 201 is C, satisfying-a-C ≦ 3, | B-C ≦ 3, for example, if the first sub-section 101 in the first area BA1 is switched in to the first stage scan start signal STV1, -7V low voltage signal VGL, -7V emission control output signal Emit _ Out, -4.5V reference voltage signal Vref, respectively, -7V, the signal value of the first shield signal switched in by the first shield ring 201 may be C-7V, satisfying-a-C ≦ 3, | B-C ≦ 3, the difference between the signal value C of the first shielding signal and the signal value a of the first-class signal and the difference between the signal value C of the first shielding signal and the signal value B of the first-class signal are all made as small as possible, so that an electric field is not generated between the first shielding ring 201 and the first subsection 101 surrounded by the first shielding ring, and the generated electric field is prevented from aggravating corrosion. Similarly, if the first sub-section 101 in the second zone BA2 is switched in to a positive voltage signal, and the second shielding ring 202 disposed around the first sub-section 101 in the second zone BA2 is also switched in to a positive voltage signal, and the signal values of the signals of the second type at this time include at least D and E, the signal value of the second shielding signal switched in by the second shielding ring 202 is F, and satisfies | D-F | ≦ 6, and | E-F ≦ 6, for example, if the first sub-section 101 in the second zone BA2 is switched in to the power signal PVDD of 8V, the high voltage signal VGH of 8V, the second test signal 2 of 2.5V, and the power signal PVDD of 4.6V, respectively, the signal value F of the second shielding signal switched in by the second shielding ring 202 may take 8V, satisfies | D-F | 6, and | E-F ≦ 6, so that the difference between the signal value F of the second shielding signal and the D-like signal value of the second test signal PCD1, satisfies | D6, The difference between the signal value F of the second shielding signal and the signal value E of the second type signal is as small as possible, so that an electric field is not generated between the second shielding ring 202 and the first subsection 101 surrounding the second shielding ring, and the generated electric field is prevented from aggravating corrosion.

In some alternative embodiments, please refer to fig. 4 and 5 in combination, in this embodiment, when the second type of signal is an ac signal and the second shielding signal is at zero potential, the first area BA1 is disposed adjacent to the second area BA2, among the plurality of first subsegments 101 in the bending area BA, the first area BA1 includes a first subsection a 101A adjacent to the second area BA2, and the second area BA2 includes a first subsection B adjacent to the first area BA 1; along the second direction X, the distance L between the first sub-segment a 101A and the first sub-segment B101B is 100-170 um.

This embodiment explains that when the first subsegments 101 in the first area BA1 are all connected to a negative voltage signal, the first shielding rings 201 disposed around the first subsegment 101 in the first area BA1 are also connected to a negative voltage signal, the first subsegments 101 in the second area BA2 are all connected to an ac signal, and the second shielding rings 202 disposed around the first subsegment 101 in the second area BA2 are connected to a zero potential, the first area BA1 and the second area BA2 are disposed adjacently, that is, the first area BA1 is bordered by the second area BA2, and the border of the first area BA1 and the border of the second area BA2 are in contact with each other, so that in a plurality of the first subsegments 101, the group connected to a negative potential signal is closest to the group connected to an ac signal, and even if the first shielding rings 201 connected to a negative potential signal and the second shielding rings 202 connected to a zero potential are close to each other, the voltage difference between them is small, the electric field difference is generated, and the shadow of the corrosion potential generated in the corrosion area BA 10 generated by the bent shielding rings in the different areas BA 3510 can be reduced as much as possible And (6) sounding. Optionally, in the first area BA1 and the second area BA2 that are adjacently disposed in the present embodiment, the first area BA1 includes a first sub-segment a 101A adjacent to the second area BA2, the second area BA2 includes a first sub-segment B101B adjacent to the first area BA1, and along the second direction X, a distance (which may be understood as a distance between a boundary 101A1 of the first sub-segment a 101A near the first sub-segment B side and a boundary 101B1 of the first sub-segment B101B near the first sub-segment a 101A side) L between the first sub-segment a 101A and the first sub-segment B101B is 100-170um, so that the distance between the first sub-segment a 101A and the first sub-segment B may be enlarged as much as possible, and mutual interference between the first sub-segment a accessing the negative potential signal and the first sub-segment B accessing the alternating current signal is avoided. Because the distance of 100-.

In some alternative embodiments, please refer to fig. 6 and 7 in combination, in which fig. 6 is a schematic plan view of another display panel according to an embodiment of the present invention, and fig. 7 is a partially enlarged view of a non-display region in fig. 6, in this embodiment, the second type signal is a positive voltage signal, and the second shielding signal is a positive voltage signal; the display panel 000 further includes a third area BA3, the third area BA3 is aligned with the first area BA1 and the second area BA2 along the second direction X, the third area BA3 is located between the first area BA1 and the second area BA2, and at least a portion of the bending area BA is located in the third area BA 3;

the third area BA3 includes a third shielding ring 203, and at least one (it is understood that, in the illustration, only 4 first subsections are taken as examples, and in a specific implementation, the number of the first subsections in each shielding ring may be set according to an actual structure of the panel) first subsection 101 is located in the third shielding ring 203 along a thickness direction of the display panel 000;

the first subsection 101 in the third section BA3 is connected to a third type of signal, which is an alternating current signal; the third shielding ring 203 is connected to a third shielding signal, and the third shielding signal is at zero potential.

This embodiment explains that the driving signals in the display panel 000 may have positive voltage signals, negative voltage signals, and some ac signals, and thus, the non-display area NA of the display panel 000 may be divided into a plurality of areas, that is, the display panel 000 at least includes a first area BA1, a second area BA2, and a third area BA3, the third area BA3 is arranged along the second direction X with the first area BA1 and the second area BA2, and the third area BA3 is located between the first area BA1 and the second area BA2, optionally the first area BA1, the third area BA3, and the second area BA2 are arranged adjacently, the bending area BA is located in the area formed by the first area BA1, the second area BA2, and the third area BA3, the third shielding ring 203 is located in the third shielding ring 3, and at least one first area BA 101 is located in the third shielding ring 203 along the thickness direction of the display panel 000, and at this time, the first area BA 101 in the first area BA1 is connected to the first shielding ring 201, the first type of signals are negative voltage signals, the first shielding signals are negative voltage signals, the first subsegments 101 in the second area BA2 are accessed with the second type of signals, the second shielding ring 202 is accessed with the second shielding signals, the second type of signals can be positive voltage signals, the second shielding signals are positive voltage signals, the first subsegments 101 in the third area BA3 are accessed with the third type of signals, the third type of signals can be alternating current signals, the third shielding ring 203 is accessed with the third shielding signals, the third shielding signals are zero potential, therefore, in each first subsegment 101 grouped according to signal types, each first subsegment 101 accessed with the alternating current signals is positioned between each first subsegment 101 accessed with the positive voltage signals and each first subsegment 101 accessed with the negative voltage signals (the third area BA3 is positioned between the first area BA1 and the second area BA 2), thereby, each first subsegment 101 accessed with the positive voltage signals and each first subsegment 101 accessed with the negative voltage signals can be transited through each first subsegment 101 accessed with the alternating current signals, the corrosion is prevented from being aggravated due to the fact that an electric field generated by a large pressure difference is too strong when each first subsection 101 connected with the positive voltage signal is adjacent to each first subsection 101 connected with the negative voltage signal. And since the third area BA3 is located between the first area BA1 and the second area BA2, in each shielding ring, the third shielding ring 203 connected to the alternating current signal is located between the first shielding ring 201 connected to the positive voltage signal and the second shielding ring 202 connected to the negative voltage signal, so that the third shielding ring 203 is adjacent to the first shielding ring 201, and the third shielding ring 203 is adjacent to the second shielding ring 202, which is beneficial to reducing the voltage difference between two adjacent shielding ring wires, and avoiding that when the first shielding ring 201 is adjacent to the second shielding ring 202, the voltage difference between the second shielding ring 202 connected to the positive voltage signal and the first shielding ring 201 connected to the negative voltage signal is too large, the generated electric field is too strong, and corrosion of the shielding rings is caused.

It can be understood that the number of the divided areas in the present embodiment is only an example of one first area BA1, one second area BA2, and one third area BA3, and in specific implementation, the number of the first area BA1, the second area BA2, and the third area BA3 may be flexibly set according to the specific arrangement of the signal lines in the display panel, and the fourth area that is accessed to other types of signals may be further divided according to specific requirements.

Alternatively, the divided areas of the present embodiment may include two groups in the form of one first area BA1, one second area BA2, and one third area BA3, as shown in fig. 8, fig. 8 is a schematic plan view illustrating another display panel according to an embodiment of the present invention, in which a first area BA1, a second area BA2, and a third area BA3 of one group are located at one end of the non-display area NA along the second direction X, a first area BA1, a second area BA2, and a third area BA3 of another group are located at the other end of the non-display area NA along the second direction X, and the two groups are in a mirror image dividing structure, the first area BA1 where each first sub-section 101 accessing the negative potential signal is located at a position close to the center of the non-display area NA in the second direction X, and the second area BA2 in which each first sub-section 101 switched in the positive potential signal is located at an edge end of the non-display area NA in the second direction X. In the flexible organic light emitting display panel, when the signal line for providing the second power signal PVEE is a trace led out through the cathode of the whole organic light emitting diode, and the signal line (not shown) for providing the second power signal PVEE connected to the cathode of the whole organic light emitting diode is connected to the bending area BA, along the second direction X, the signal lines on the left and right sides of the display area AA can be connected to the side of the first area BA1 away from the third area BA3, so that the voltage difference between the negative potential signal on the signal line for providing the second power signal PVEE and each of the first sub-segments 101 in the first area BA1 is small (at this time, the first area BA1, the third area BA3, and the second area BA2 in fig. 6 and 7 can be respectively connected to various types of signal lines located at the periphery of the display area AA for providing the driving signal for the pixel driving circuit or the gate driving circuit as described in the above embodiments), thereby avoiding the signal line for providing the driving signal to the cathode to be connected to the bending area BA, and the electric field generated when the adjacent high-voltage signal is high is strong, which causes the phenomenon that the signal wire is easy to corrode.

In some optional embodiments, please refer to fig. 8, 9 and 10 in combination, fig. 9 is a schematic cross-sectional structure of the direction M-M 'in fig. 8, and fig. 10 is another schematic cross-sectional structure of the direction M-M' in fig. 8, in this embodiment, along a light emitting direction Z1 of the display panel 000, the display panel 000 further includes at least the substrate 30, the first metal layer M1, the first inorganic layer 40, the capacitor metal layer Mc, the second inorganic layer 50, the second metal layer M2, the third inorganic layer 60, the first organic layer 70, and the third metal layer M3, and optionally, a planarization layer PLN may be further included on a side of the third metal layer M3 away from the first organic layer 70;

the signal line 10 is located in the third metal layer M3 in the first sub-segment 101 of the bending area BA;

in a direction Z perpendicular to the plane of the substrate 30, the first inorganic layer 40, the second inorganic layer 50, and the third inorganic layer 60 do not overlap the bending area BA, and the first organic layer 70 is at least located in the bending area BA.

This embodiment explains that the display panel 000 at least includes a first metal layer M1, a first inorganic layer 40, a capacitor metal layer Mc, a second inorganic layer 50, a second metal layer M2, a third inorganic layer 60, a first organic layer 70, and a third metal layer M3 along a light-emitting direction Z1, i.e. a direction from the substrate 30 to a light-emitting surface of the display panel 000, wherein the first metal layer M1 can be used to fabricate a scan line of the display panel 000, a gate of a driving transistor, and the like, the capacitor metal layer Mc can be used to fabricate a capacitor layer of the display panel 000, the second metal layer M2 can be used to fabricate a data line of the display panel 000, a source and a drain of the driving transistor, the third metal layer M3 can be used to fabricate the rest of the display panel 000, such as a touch signal line, and the like, the first inorganic layer 40 can be an interlayer insulating layer ILD, and is located between the first metal layer M1 and the capacitor metal layer Mc to perform an insulating function, the second inorganic layer 50 may be an interlayer insulating metal layer IMD serving as an insulation between the capacitor metal layer Mc and the second metal layer M2, the third inorganic layer 60 may be a passivation layer PV over the second metal layer M2, and the first organic layer 70 may be a bending protection layer BPL for protecting the respective film layers thereunder. In the signal line 10 of this embodiment, the first subsection 101 of the bending area BA is located on the third metal layer M3, and by being disposed in the direction Z perpendicular to the plane of the substrate 30, the first inorganic layer 40, the second inorganic layer 50, and the third inorganic layer 60 under the third metal layer M3 are not overlapped with the bending area BA, the first organic layer 70 is located at least in the bending area BA, that is, the inorganic layers (not filled in the figure) under the third metal layer M3 in the bending area BA are all hollowed out, and the first organic layer 70 under the third metal layer M3 extends to the bending area BA to fill the segment difference after the inorganic layers are hollowed out, so that the bending resistance of the bending area BA can be increased by the bending resistance of the first organic layer 70. In this embodiment, the first subsection 101 of the bending area BA is manufactured by using the third metal layer M3, which is convenient for filling the bending area BA in the first organic layer 70 in the panel structure before the third metal layer M3 is manufactured, thereby increasing the bending performance, and avoiding the need of adding an additional organic layer mask in the manufacturing process when the first subsection 101 is manufactured by using the second metal layer M2 or other metal layers, thereby increasing the cost.

It is understood that, as shown in fig. 9 and 10, in the direction Z perpendicular to the plane of the substrate 30, the first metal layer M1, the capacitor metal layer Mc, the second metal layer M2 and the bending area BA do not overlap, so that the bending area BA only includes the third metal layer M3 and the organic layer where the first sub-segment 101 is located, so as to further improve the bending resistance of the bending area BA.

Optionally, as shown in fig. 7-8 and 11, fig. 11 is a schematic cross-sectional structure of the signal line 10 in the direction from N to N' in fig. 8, where the signal line further includes a second sub-segment 102 located in the display area AA and a third sub-segment 103 located in the binding area BR, the second sub-segment 102 is arranged in a different layer from the first sub-segment 101, and the third sub-segment 103 is arranged in a different layer from the first sub-segment 101;

the display panel 000 further includes a first via K1 and a second via K2, the first subsection 101 is connected to the second subsection 102 through the first via K1, and the first subsection 101 is connected to the third subsection 103 through the second via K2;

the first area BA1 includes a first line change area BA01, and the first line change area BA01 is located at both sides of the bending area BA along the first direction Y; in a direction Z perpendicular to the plane of the substrate 10, at least one first via K1 and at least one second via K2 are located in the first wire swap area BA01, and at least a portion of the first shield ring 201 is located in the first wire swap area BA 01.

This embodiment explains that the same signal line 10 in the display panel 000 may be arranged in different layers in segments, that is, the signal line 10 may further include at least a second sub-segment 102 located in the display area AA and a third sub-segment 103 located in the binding area BR, where the first sub-segment 101 is located in the third metal layer M3, the second sub-segment 102 is arranged in different layers from the first sub-segment 101, the third sub-segment 103 is arranged in different layers from the first sub-segment 101, the first sub-segment 101 is connected to the second sub-segment 102 through the first via K1, the first sub-segment 101 is connected to the third sub-segment 103 through the second via K2, and optionally, the second sub-segment 102 and the third sub-segment 103 may be arranged in the same layer (the example that the second sub-segment 102 and the third sub-segment 103 are both located in the second metal layer M2 in fig. 11) or in different layers, which this embodiment is not specifically limited. Since the signal lines 10 are of a plurality of types to realize the display function of the display panel 000, different driving signals need to be connected, and different signal lines 10 need to be electrically connected by wire replacement or need to be electrically connected by wire replacement while avoiding some panel structures, the second sub-section 102 in the display area AA is disposed on another metal film layer below the third metal layer M3, so that the signal lines 10 can be conveniently replaced by wires to avoid mutual interference.

Optionally, the second sub-segment 102 is located in the first metal layer M1; alternatively, the second sub-segment 102 is located at the capacitance metal layer Mc; alternatively, second sub-segment 102 is located at second metal layer M2;

the third sub-segment 103 is located at the first metal layer M1; alternatively, the third sub-segment 103 is located at the capacitance metal layer Mc; alternatively, the third sub-segment 103 is located at the second metal layer M2.

In fig. 11 of this embodiment, taking the second sub-segment 102 located on the second metal layer M2 and the third sub-segment 103 located on the second metal layer M2 as an example, the resistance of the metal material of the second metal layer M2 generally used for manufacturing the data line and the source/drain of the driving transistor is about 1/10 of the first metal layer M1 or the capacitance metal layer Mc, so that the second sub-segment 102 connected to the first sub-segment 101 in the display area AA and the third sub-segment 103 connected to the first sub-segment 101 in the binding area BR are manufactured as much as possible by using the second metal layer M2 (except for the trace that must be manufactured by using the first metal layer M1 and the capacitance metal layer Mc), which can greatly reduce the impedance. And because the third inorganic layer 60 is arranged above the second metal layer M2, the second metal layer M2 can be protected, the possibility of water-oxygen corrosion is reduced, and the signal transmission is more stable, and the protection effect is smaller than that of the third inorganic layer 60 because the third inorganic layer 60 is arranged above the third metal layer M3, so that the second subsection 102 and the third subsection 103 can be arranged on the second metal layer M2 as much as possible.

It can be understood that, along the first direction Y, the end of the second sub-segment 102 in the display area AA, which is far away from the bending area BA, may be connected to another metal film layer by a line change, the end of the third sub-segment 103 in the binding area BR, which is far away from the bending area BA, may be connected to another metal film layer by a line change, and the line change positions are far away from the bending area BA, that is, the region F1 in fig. 9 and 10, the region F2 in fig. 11, and the region F3 in fig. 11 are all longer (not drawn to scale due to space limitations), so that line change vias are not arranged as much as possible near the two sides of the bending area BA, and the corrosion phenomenon of the nearby metal layer is prevented from being aggravated due to the large number of vias.

Alternatively, as shown in fig. 7 to 11, the first area BA1 includes a first line change area BA01, the second area BA2 includes a second line change area BA02, the third area BA3 includes a third line change area BA03, and along the first direction Y, the first line change area BA01, the second line change area BA02, and the third line change area BA03 are all located at two sides of the bending area BA, that is, the first line change area BA01 includes an area close to the display area AA at one side of the bending area BA and an area close to the binding area BR at one side of the bending area BA, the second line change area BA02 includes an area close to the display area AA at one side of the bending area BA and an area close to the binding area BR at one side of the bending area BA, and the third line change area BA03 includes an area close to the display area AA at one side of the bending area BA and an area close to the binding area BR at one side of the bending area BA; in a direction Z perpendicular to the plane of the substrate 10, the first via hole K1 and the second via hole K2 connected to the first sub-section 101 in the first area BA1 are located in the first wire swap area BA01, the first via hole K1 and the second via hole K2 connected to the first sub-section 101 in the second area BA2 are located in the second wire swap area BA02, and the first via hole K1 and the second via hole K2 connected to the first sub-section 101 in the third area BA3 are located in the third wire swap area BA03, that is, the first wire swap area BA01, the second wire swap area BA02, and the third wire swap area BA03 are used to locate the first via hole K1 and the second via hole K2, at least a portion of the first shield ring 201 may be located in the first wire swap area BA1, at least a portion of the second shield ring 202 may be located in the second wire swap area 02, at least a portion of the third shield ring 203 may be located in the third wire swap area BA03, and the remaining portion of the shield ring may be located in the BA 01. Optionally, the first via hole K1 connecting the first subsection 101 and the second subsection 102 and the second via hole K2 connecting the first subsection 101 and the third subsection 103 may both be designed to include a plurality of sub holes, so that sufficient electrical connection between different layers of subsections is facilitated, and a signal transmission effect is ensured.

In some alternative embodiments, please continue to refer to fig. 7-11, in the present embodiment, in the direction Z perpendicular to the plane of the substrate 30, at least one first via K1 is located in the first shielding ring 201, and at least one second via K2 is located in the first shielding ring 201. It is to be understood that fig. 7-11 are only illustrated by way of example that the first via K1 and the second via K2 are both within the shield ring.

This embodiment explains that the line-change vias of the first subsection 101, the second subsection 102, and the third subsection 103, i.e., the first via K1 and the second via K2, may be disposed in the first shielding ring 201, because there is a sudden change in impedance when the line is changed through the via, and the positions of the first via K1 and the second via K2 are both formed by opening holes in the first organic layer 70, impurities in the process of forming holes are easily left at the edge of the via, and water and oxygen are easily introduced in the process of forming holes, and the phenomenon that metal is easily corroded occurs at the line-change position of the via due to the promoting effect of the surrounding electric field. Therefore, the present embodiment is disposed in a direction Z perpendicular to a plane of the substrate 30, at least one first via hole K1 is located in the first shielding ring 201, and at least one second via hole K2 is located in the first shielding ring 201, so that the wire-changing via holes of the first subsection 101, the second subsection 102, and the third subsection 103 are all protected, a better electric field shielding effect is achieved, and a corrosion situation is avoided as much as possible at the position of the wire-changing via hole.

It can be understood that, since the first shielding ring 201, the second shielding ring 202, and the third shielding ring 203 in the above embodiments are all used to weaken or shield the electric field between the first subsegments 101 connected to different types of signals, and are used as an auxiliary functional structure of the display panel 000, even if the electric field generated between the shielding rings (such as the electric field generated between the first shielding ring 201 and the third shielding ring 203) is corroded, the functionality of each signal line 10 in the display panel 000 is not affected, and thus the normal display operation of the display panel 000 is not affected. And because the potential signals connected with the first subsegment 101 in the same shield ring are relatively close between two adjacent wire-changing vias in the same shield ring (such as two adjacent first vias K1 in the first shield ring 201), even if the electric field generated between two adjacent first subsegments 101 is weak, the probability of corrosion is low.

In some alternative embodiments, please refer to fig. 1-11 and 12 in combination, fig. 12 is a partially enlarged view of the bending region and the bonding region in fig. 6, in this embodiment, the bonding region BR includes a plurality of conductive pads 80, and the third sub-segment 103 is coupled to the conductive pads 80; optionally, one end of the third sub-segment 103 may be directly connected to the conductive pad 80 in a contact manner, or one end of the third sub-segment 103 may also be electrically connected to the conductive pad 80 through another connection portion, which is not limited in this embodiment;

the conductive pad 80 includes a first pad 801;

the first shield ring 201 is connected to the first pad 801 through a first connection line 901, the first connection line 901 is arranged in a different layer from the first shield ring 201, and the first connection line 901 is electrically connected to the first shield ring 201 through a third via K3; the third via K3 does not overlap the first shield ring 201 in a direction Z perpendicular to the plane of the substrate 30.

This embodiment explains that the bonding region BR includes a plurality of conductive pads 80, and the third subsections 103 of the signal line 10 are respectively coupled to the conductive pads 80 of the bonding region BR in a one-to-one correspondence, so that the first shielding signal can be provided to the first shielding ring 201 through the flexible circuit board or the driving chip bonded by the bonding region BR. The first shielding ring 201 is connected to the first pad 801 of the binding region BR through the first connection line 901, the first connection line 901 and the first shielding ring 201 are arranged in different layers, the optional first shielding ring 201 and the first subsection 101 are arranged in the third metal layer M3 in the same layer, and the first connection line 901 is arranged in the second metal layer M2, which is beneficial to reducing the impedance of the first connection line 901 and improving the signal transmission effect and the signal transmission stability. In this embodiment, the first connection line 901 is electrically connected to the first shielding ring 201 through the third via K3, in the direction Z perpendicular to the plane of the substrate 30, the third via K3 does not overlap with the first shielding ring 201, and the optional third via K3 is located outside the first shielding ring 201 (as shown in fig. 12), so that it can be avoided that the integrity of the first shielding ring 201 is damaged by the opened third via K3, and the shielding effect is affected.

Optionally, the conductive pad 80 further includes a second pad 802 and a third pad 803; the second shielding ring 202 is connected to the second pad 802 through a second connection line 902, the second connection line 902 is disposed in a different layer from the second shielding ring 202, and the second connection line 902 is electrically connected to the second shielding ring 202 through a fourth via K4; in the direction Z perpendicular to the plane of the substrate 30, the fourth via K4 does not overlap with the second shield ring 202; the third shielding ring 203 is connected to the third pad 803 through a third connection line 903, the third connection line 903 is arranged in a different layer from the third shielding ring 203, and the third connection line 903 is electrically connected to the third shielding ring 203 through a fifth via K5; in the direction Z perpendicular to the plane of the substrate 30, the fifth through hole K5 does not overlap with the third shield ring 203; the first shielding ring 201, the second shielding ring 202, and the third shielding ring 203 may be disposed on the same layer as the first sub-segment 101 and all disposed on the third metal layer M3, and the first connecting line 901, the second connecting line 902, and the third connecting line 903 may be disposed on the same layer and disposed on the second metal layer M2, so as to be beneficial to reducing the impedance of the first connecting line 901, the second connecting line 902, and the third connecting line 903, and improve the signal transmission effect.

It can be understood that, because the line-changing via hole position is easy to be corroded due to water and oxygen entering or impurity residue in general, especially under the action of a strong electric field, the line-changing via hole position is easy to be corroded. However, the design of the additional shielding ring in the above embodiment can not only shield the influence of the electric field on the first subsection 101 by the shielding ring, but also make the distance between the line-changing vias accessing the shielding rings of different signal groups longer (as the distance between the third via K3 of the first shielding ring 201 and the fifth via K5 of the third shielding ring 203, which is denoted by W in fig. 12), so even if an electric field is generated between the shielding rings (as the electric field generated between the first shielding ring 201 and the third shielding ring 203), the probability of corrosion is smaller because the distance between the third via K3 and the fifth via K5 is longer. Therefore, the design of the embodiment that the line-changing via hole is arranged in the shielding ring can better play a role in reducing the occurrence probability of corrosion.

In some alternative embodiments, please refer to fig. 1 to 11 and fig. 13 in combination, fig. 13 is another enlarged partial view of the bending region and the binding region in fig. 6, in this embodiment, the first sub-segment 101 includes a plurality of first holes 101K.

This embodiment explains that a plurality of first hollow holes 101K may be formed in the first subsection 101 of the bending area BA, optionally, the first hollow holes 101K may penetrate through the first subsection 101 along the thickness direction of the first subsection 101, and the first hollow holes 101K play a role in releasing stress, so that cracks can be prevented from occurring in the first subsection 101 when the bending area BA is bent.

It can be understood that, in fig. 13 of the present embodiment, only the shape of the first hollow hole 101K is taken as a circular example, but is not limited to this shape, and the shape of the first hollow hole 101K may also be other shapes such as an ellipse, a square, and the like.

In some alternative embodiments, please refer to fig. 1-11 and fig. 14 in combination, fig. 14 is another enlarged partial view of the bending region and the binding region in fig. 6, in this embodiment, the first shielding ring 201 includes a plurality of second holes 201K. Optionally, the second shielding ring 202 includes a plurality of third hollowed holes 202K, and the third shielding ring 203 includes a plurality of fourth hollowed holes 203K, so that the second hollowed holes 201K, the third hollowed holes 202K, and the fourth hollowed holes 203K can play a role in releasing stress, and further cracks can be prevented from occurring in the first shielding ring 201, the second shielding ring 202, and the third shielding ring 203 when the bending area BA is bent.

In some optional embodiments, please refer to fig. 1 to 11 and fig. 15 in combination, fig. 15 is another partial enlarged view of the bending region and the binding region in fig. 6, in this embodiment, the first sub-segment 101 includes a plurality of first hollow holes 101K, the first shielding ring 201 includes a plurality of second hollow holes 201K, and in a direction Z perpendicular to the display panel 000, at least one of the first hollow holes 101K and at least one of the second hollow holes 201K have the same shape and size.

In this embodiment, it is explained that, in the plurality of first hollow holes 101K formed in the first sub-segment 101 and the plurality of second hollow holes 201K formed in the first shielding ring 201, the shapes and sizes of at least one first hollow hole 101K and at least one second hollow hole 201K are the same (fig. 15 illustrates that the shapes and sizes of the first hollow hole 101K and the second hollow hole 201K are both circular and the same), so that the first hollow hole 101K and the second hollow hole 201K can be etched and formed in the same process in the process, uniformity of the hollow holes is achieved, and the process efficiency can be improved.

In some alternative embodiments, please refer to fig. 16, where fig. 16 is a schematic plane structure diagram of a display device according to an embodiment of the present invention, and the display device 111 according to this embodiment includes the display panel 000 according to the above embodiment of the present invention. The embodiment of fig. 16 is only an example of a mobile phone, and the display device 111 is described, it is understood that the display device 111 provided in the embodiment of the present invention may be another display device 111 having a display function, such as a computer, a television, and a vehicle-mounted display device, and the present invention is not limited thereto. The display device 111 provided in the embodiment of the present invention has the beneficial effects of the display panel 000 provided in the embodiment of the present invention, and specific reference may be made to the specific description of the display panel 000 in the above embodiments, which is not described herein again.

As can be seen from the above embodiments, the display panel and the display device provided by the present invention at least achieve the following beneficial effects:

Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A display panel, comprising: a display area and a non-display area, the non-display area being at least partially disposed around the display area; the non-display area comprises a bending area and a binding area, and the bending area is positioned between the binding area and the display area along a first direction;

the display panel comprises a plurality of signal lines, and the signal lines at least comprise a first subsection positioned in the bending area; the display panel at least comprises a first area, and at least part of the bending area is positioned in the first area;

the display panel further comprises a first shielding ring positioned in the first area, and at least one first subsection is positioned in the first shielding ring along the thickness direction of the display panel.

2. The display panel according to claim 1,

the first subsegment in the first area is accessed to a first type of signal, and the first shielding ring is accessed to a first shielding signal;

the first type of signal is a negative voltage signal, and the first shielding signal is a negative voltage signal.

3. The display panel according to claim 2, wherein the display panel further comprises at least a second region, the second region and the first region are arranged along a second direction, and at least a part of the bending region is located in the second region; wherein the first direction and the second direction intersect;

the second area comprises a second shielding ring, and at least one first subsection is positioned in the second shielding ring along the thickness direction of the display panel;

the first subsegment in the second area is accessed to a second type of signal, and the second shielding ring is accessed to a second shielding signal;

the second type of signal is a positive voltage signal, and the second shielding signal is a positive voltage signal; or,

the second type of signal is an alternating current signal, and the second shielding signal is zero potential.

4. The display panel according to claim 3,

the signal values of said first class of signals comprise at least a and B, the signal value of said first mask signal is C, wherein | a-C | ≦ 3, and | B-C | ≦ 3;

when the second type signal is a positive voltage signal and the second shielding signal is a positive voltage signal, the signal value of the second type signal at least includes D and E, the signal value of the second shielding signal is F, wherein | D-F | ≦ 6, and | E-F | ≦ 6.

5. The display panel according to claim 3,

when the second-type signal is an alternating-current signal and the second shielding signal is zero potential, the first region and the second region are adjacently arranged, among a plurality of first subsegments of the bending region, one first subsegment A adjacent to the second region is included in the first region, and one first subsegment B adjacent to the first region is included in the second region; along the second direction, the distance between the first subsection A and the first subsection B is 100-170 um.

6. The display panel of claim 3, wherein the second type of signal is a positive voltage signal and the second mask signal is a positive voltage signal;

the display panel further comprises a third area, the first area and the second area are arranged along the second direction, the third area is located between the first area and the second area, and at least part of the bending area is located in the third area;

the third area comprises a third shielding ring, and at least one first subsection is positioned in the third shielding ring along the thickness direction of the display panel;

a third type of signal is accessed to the first subsegment in the third area, and the third type of signal is an alternating current signal; and the third shielding ring is connected with a third shielding signal, and the third shielding signal is zero potential.

7. The display panel of claim 1, wherein the first shield ring is located at a same film layer as the first sub-segment.

8. The display panel according to claim 1, wherein the display panel further comprises at least a substrate, a first metal layer, a first inorganic layer, a capacitor metal layer, a second inorganic layer, a second metal layer, a third inorganic layer, a first organic layer, and a third metal layer along a light exit direction of the display panel;

the first subsegment is located at the third metal layer;

in a direction perpendicular to a plane of the substrate, the first inorganic layer, the second inorganic layer and the third inorganic layer are not overlapped with the bending region, and the first organic layer is at least located in the bending region.

9. The display panel according to claim 8, wherein the signal line further comprises a second sub-segment located in the display area and a third sub-segment located in the bonding area, the second sub-segment is arranged in a different layer from the first sub-segment, and the third sub-segment is arranged in a different layer from the first sub-segment;

the display panel further comprises a first through hole and a second through hole, the first subsection is connected with the second subsection through the first through hole, and the first subsection is connected with the third subsection through the second through hole;

the first area comprises a first wire changing area, and the first wire changing area is positioned on two sides of the bending area along the first direction; in the direction perpendicular to the plane of the substrate, at least one first via hole and at least one second via hole are located in the first wire changing area, and at least part of the first shielding ring is located in the first wire changing area.

10. The display panel of claim 9, wherein at least one of the first vias is located within the first shielding ring and at least one of the second vias is located within the first shielding ring in a direction perpendicular to a plane of the substrate.

11. The display panel according to claim 9,

the second subsegment is located at the first metal layer; or the second subsegment is located at the capacitor metal layer; or, the second subsegment is located in the second metal layer;

the third subsegment is located at the first metal layer; or, the third subsegment is located at the capacitor metal layer; or, the third sub-segment is located in the second metal layer.

12. The display panel according to claim 8,

the bonding region comprises a plurality of conductive pads, and the third subsection is coupled with the conductive pads;

the conductive pad comprises a first pad;

the first shielding ring is connected to a first bonding pad through a first connecting wire, the first connecting wire and the first shielding ring are arranged in different layers, and the first connecting wire is electrically connected with the first shielding ring through a third through hole; the third via hole is not overlapped with the first shielding ring in a direction perpendicular to the plane of the substrate.

13. The display panel of claim 1, wherein the first sub-segment comprises a plurality of first via holes.

14. The display panel according to claim 13, wherein the first shielding ring comprises a plurality of second hollow holes.

15. The display panel according to claim 14, wherein at least one of the first and second apertures has the same shape and size in a direction perpendicular to the display panel.

16. A display device characterized by comprising the display panel according to any one of claims 1 to 15.