Display panel and display device

Abstract

The invention provides a display panel and a display device, the display panel comprises a substrate and a first type signal line extending along a first direction, and the first type signal line comprises a first part and a second part; the first parts are located on the first metal layer, and adjacent first parts are mutually disconnected; the second part is located on the second metal layer which is located on the side, away from the substrate, of the first metal layer. Wherein the adjacent first parts are electrically connected through the second parts. According to the display panel, the breaking design of the adjacent first parts can prevent electrostatic charges from being transferred from the edge of the panel to the interior through the first parts, and the electrostatic charge amount in the display panel is reduced; and on the other hand, the second parts arranged on different layers can realize electric connection between the adjacent first parts, so that the effective electric signal transmission function of the first type signal lines is ensured.

Description

Technical Field

[0001] This application relates to the field of display technology, specifically to a display panel and display device. Background Technology

[0002] In existing display panels, due to limitations in manufacturing processes, static charge is often generated during the fabrication of some signal lines. Excessive static charge can easily lead to electrostatic discharge (ESD) and damage to internal components. In particular, for frameless display panels, the scan signal lines can traverse the panel laterally, allowing static charge to transfer into the panel's interior, further increasing the amount of static charge and the risk of ESD. Summary of the Invention

[0003] In view of this, this application provides a display panel and a display device to help solve the problem of high electrostatic discharge risk in the aforementioned display panel.

[0004] In a first aspect, this application provides a display panel including a substrate and a first type of signal line extending along a first direction. The first type of signal line includes a first portion and a second portion. The first portion is located in a first metal layer, and adjacent first portions are disconnected from each other. The second portion is located in a second metal layer, and the second metal layer is located on the side of the first metal layer away from the substrate.

[0005] The adjacent first parts are electrically connected through the second part.

[0006] Secondly, this application provides a display device, including a display panel as provided in the first aspect.

[0007] In this application, the interruption design of adjacent first parts can prevent static charge from transferring from the edge of the panel to the inside through the first part, which helps to relatively reduce the amount of static charge inside the display panel; on the other hand, the second part set in a different layer can realize the electrical connection between adjacent first parts, ensuring the effective electrical signal transmission function of the first type of signal line. Attached Figure Description

[0008] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0009] Figure 1 This is a schematic diagram of a partial structure of a display panel related to this application;

[0010] Figure 2A schematic diagram of a partial structure of a display panel provided in this application;

[0011] Figure 3 for Figure 2 The diagram shows a cross-sectional view of the display panel along section line AA'.

[0012] Figure 4 A schematic diagram of a partial structure of a display panel provided in this application;

[0013] Figure 5 for Figure 4 The diagram shows a cross-sectional view of the display panel along section line BB'.

[0014] Figure 6 A schematic diagram of a partial structure of a display panel provided in this application;

[0015] Figure 7 for Figure 6 The diagram shows a cross-sectional view of the display panel along section line CC'.

[0016] Figure 8 A schematic diagram of a partial structure of a display panel provided in this application;

[0017] Figure 9 A schematic diagram of a partial structure of a display panel provided in this application;

[0018] Figure 10 The equivalent circuit diagram corresponding to the pixel circuit provided in this application;

[0019] Figure 11 A schematic diagram of a display device provided in this application;

[0020] Figure 12 A schematic diagram of another display device provided in this application. Detailed Implementation

[0021] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0022] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0023] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0025] Various modifications and variations can be made to this application without departing from its spirit or scope, which will be apparent to those skilled in the art. Therefore, this application is intended to cover modifications and variations falling within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in this application can be combined with each other without contradiction.

[0026] Figure 1 This is a schematic diagram of a partial structure of a display panel related to this application.

[0027] For the existing display panel 10', when fabricating a portion of the scan signal lines 01', considering that the metal film layer where these scan signal lines 01' are located often has a large sheet resistance, the static charge generated during the fabrication process is difficult to dissipate, easily leading to the accumulation of static charge on the signal lines. Specifically, such as... Figure 1 As shown, when the scan signal line 01' passes through the display panel 10', static charge can invade the interior of the panel from the edge of the panel through the scan signal line 01', thereby further aggravating the static charge accumulation problem. In severe cases, it can cause electrostatic breakdown and damage the internal structure of the panel.

[0028] Figure 2 This is a schematic diagram of a partial structure of a display panel provided in this application. Figure 3 for Figure 2 The diagram shows a cross-sectional view of the display panel along section line AA'.

[0029] To address the aforementioned problems, this application provides a display panel 10, such as... Figure 2 As shown, the display panel 10 includes a substrate 01 and a first type of signal line 02 extending along a first direction X. The first type of signal line 02 can be a scan signal line. During the operation of the display panel 10, the pixel circuit 03 in the display panel 10 can receive the electrical signals transmitted by the first type of signal line 02. The electrical signals transmitted by the first type of signal line 02 can be used to control the on / off state of the transistors in the pixel circuit 03.

[0030] Combination Figure 2 and Figure 3The first type of signal line 02 includes a first portion 021 and a second portion 022. The first portion 021 is located in the first metal layer m1, and adjacent first portions 021 are disconnected from each other. It should be noted that, considering that the first type of signal line 02 penetrates the display panel 10, the edge portion of the first type of signal line 02 can contact or approach the edge of the display panel 10. The interruption design between adjacent first portions 021 adopted in this embodiment can prevent static charge from further penetrating into the panel interior from the panel edge through the aforementioned edge portion.

[0031] The second part 022 is located in the second metal layer m2. The second metal layer m2 is located on the side of the first metal layer m1 away from the substrate 01. In the process of manufacturing the display panel 10, the process of manufacturing the second metal layer m2 can be later than the process of manufacturing the first metal layer m1.

[0032] The adjacent first portions 021 are electrically connected through the second portion 022. Since the first portions 021 and the second portions 022 are arranged in different layers, they can be connected across the film layers through a through-hole structure.

[0033] In this embodiment, the interruption design of adjacent first portions 021 can reduce static charge intrusion from the panel edge into the panel interior. On the other hand, the dissimilarly layered second portion 022 can achieve electrical connection between adjacent first portions 021, ensuring the effective electrical signal transmission function of the first type of signal line 02.

[0034] In one embodiment of this application, the sheet resistance of the first metal layer m1 is greater than the sheet resistance of the second metal layer m2. The first metal layer m1 may include molybdenum.

[0035] The higher the sheet resistance of a metal layer, the more difficult it is to remove static charge from the traces when fabricating them. Therefore, this embodiment utilizes the second portion 022 of the second metal layer m2 as a "bridging structure" between adjacent first portions 021. This not only reduces the overall impedance of the first type of signal line 02 but also facilitates the removal of static charge accumulated in the first portion 01. This is because the display panel 10 can be equipped with an electrostatic discharge (ESD) protection device, which can be used to remove static charge from the first type of signal line 02. When all structures on the second metal layer m2 are fabricated, the first portion 021 and the second portion 022 are electrically connected, thus connecting the entire first type of signal line 02. Furthermore, the first type of signal line 02 can be connected to the aforementioned ESD protection device, allowing the static charge in the first type of signal line 02 to be removed by the ESD protection device.

[0036] In one embodiment of this application, the second metal layer m2 may be composed of multiple metal film layers, and the components corresponding to the multiple metal film layers may include titanium, aluminum, etc.

[0037] In one embodiment of this application, such as Figure 2 As shown, the first type of signal line 02 passes through the display panel 10 in the first direction X. At this time, the display panel 10 can be a borderless display panel.

[0038] In this embodiment, when the first part 021 is used to interrupt and the second part 022 is used for bridging, as provided in this application, to prepare the first type of signal line 02 that penetrates the display panel 10, it can both prevent static charge from transferring to the inside of the panel through the first part 021 and ensure the connectivity effectiveness of the first type of signal line 02 under the design that penetrates the panel.

[0039] Figure 4 This is a schematic diagram of a partial structure of a display panel provided in this application. Figure 5 for Figure 4 The diagram shows a cross-sectional view of the display panel along section line BB'.

[0040] In one embodiment of this application, such as Figure 4 As shown, the display panel 10 also includes a shift register circuit 04, which is located in the display area AA. The shift register circuit 04 can be used to transmit a scan signal to the pixel circuit 03, which can be used to control the on / off state of the transistors in the pixel circuit 03. It should be noted that in this application, the shift register circuit 04, the light-emitting device, and the pixel circuit 03 can all be located within the display area AA.

[0041] Combination Figure 4 and Figure 5 The output of the shift register circuit 04 is electrically connected to a second type of signal line 05, which is located in the second metal layer m2 and extends along the second direction Y, intersecting the first direction X. The second type of signal line 05 can connect to a scan signal line, and the scan signal line can connect to multiple pixel circuits 03 located in the same pixel row. In this case, the scan signal output by the shift register circuit 04 can be transmitted to the scan signal line via the second type of signal line 05, and then to the pixel circuit 03. At this time, the aforementioned scan signal line can refer to the first type of signal line 02. Furthermore, the multiple pixel circuits 03 in the same pixel row can be arranged along the first direction X.

[0042] Among them, combined Figure 4 and Figure 5 The multiple second portions 022 include a first bridging portion 221, and some adjacent first portions 021 of some first type signal lines 02 are electrically connected to the second type signal lines 05 through the first bridging portion 221.

[0043] In this embodiment, the first bridging portion 221 can support electrical connection between adjacent first portions 021, enabling conduction of the first type signal line 02 to which the adjacent first portions 021 belong in its extension direction. Furthermore, the first portion 021 is electrically connected to the second type signal line 05 via the first bridging portion 221, meaning that the first type signal line 02 and the second type signal line 05 described above can transmit the same electrical signal; that is, the first type signal line 02 can be a gating signal line.

[0044] In one embodiment of this application, such as Figure 4 As shown, along the first direction X, the width w1 of the first bridging portion 221 is greater than the width W1 of the second type signal line 05.

[0045] It is worth noting that during the fabrication of the first part 021, to ensure complete disconnection between adjacent first parts 021, the gap between adjacent first parts 021 can have a certain width to avoid short circuits due to process errors. Furthermore, considering limited space, the width W1 of the second type signal line 05 can be smaller, which helps save space and increase pixel distribution density (PPI, Pixels Per Inch). In this embodiment, since the first part 021 can be electrically connected to the second type signal line 05 through the first bridging portion 221, the design of w1 > W1 means that the second type signal line 05 can be widened at the gap (between adjacent first parts 021) to obtain the first bridging portion 221. At this time, the second type signal line 05 can be widened only at the aforementioned gap, which helps to maintain a high PPI while ensuring electrical connection between adjacent first parts 021 and between the first part 021 and the second type signal line 05.

[0046] Figure 6 This is a schematic diagram of a partial structure of a display panel provided in this application. Figure 7 for Figure 6 The diagram shows a cross-sectional view of the display panel along section line CC'.

[0047] In one embodiment of this application, combined with Figure 6 and Figure 7The display panel 10 also includes a third type of signal line 06, which is located in the second metal layer m2 and extends along the second direction Y, which intersects the first direction X. The third type of signal line 06 transmits a fixed voltage signal; optionally, the transmitted electrical signal can be a power supply voltage signal or other fixed voltage signals. Furthermore, based on the resistance formula R = ρ * L / S, without considering the resistivity ρ and cross-sectional area S of the conductor, the greater the extension length L of the conductor, the greater the resistance R of the corresponding conductor. Correspondingly, for conductors with a larger extension length L, the resistance R of the conductor is also larger, resulting in a larger voltage drop when transmitting electrical signals. Considering the large extension length of the third type of signal line 06 within the display panel 10, to solve the problem of large voltage drop, the line width of the third type of signal line 06 can be increased to increase the cross-sectional area S corresponding to the third type of signal line 06, thereby offsetting the impedance increase caused by the larger extension length L and improving the voltage drop problem of the third type of signal line 06.

[0048] Among them, the plurality of second portions 022 include a second bridging portion 222, and a portion of the third type signal line 06 is multiplexed as at least a portion of the second bridging portion 222.

[0049] In this embodiment, since both the third type signal line 06 and the second portion 022 are located in the second metal layer m2, a portion of the third type signal line 06 can be reused as the second bridging portion 222. This arrangement eliminates the need for an additional bridging portion, saving space. Furthermore, the electrical signal transmitted by the first type signal line 02 to which the second bridging portion 222 belongs can be the same as the electrical signal transmitted by the third type signal line 06. It is worth noting that since the first type signal line 02 can extend along the first direction X and the third type signal line 06 can extend along the second direction Y, the design of this embodiment allows the first type signal line 02 and the third type signal line 06 to form a mesh structure, which helps reduce overall impedance and improve the transmission efficiency of fixed voltage signals.

[0050] Figure 8 This is a schematic diagram of a partial structure of a display panel provided in this application.

[0051] In one embodiment of this application, such as Figure 8 As shown, a portion of the third type signal line 06 is multiplexed as a portion of the second bridging portion 222. Along the first direction X, the width of the third type signal line 06 is W2. At this time, the width of the second bridging portion 222 can be greater than the width of the third type signal line 06.

[0052] The plurality of first portions 021 include adjacent first sub-portions 211 and second sub-portions 212, which are electrically connected by a second bridging portion 222. The distance between the first sub-portions 211 and the second sub-portions 212 along the first direction X is L1.

[0053] Where W2 < L1 < w2, w2 is the width of the second bridging portion 222.

[0054] In this embodiment, L1 < w2 means that the orthographic projection of the second bridging portion 222 on the substrate 01 overlaps with the orthographic projections of the first sub-part 211 and the second sub-part 212 on the substrate 01, which is beneficial for the implementation of the bridging process between the second bridging portion 222 and the first part 021. Furthermore, the second bridging portion 222 can be obtained by widening a portion of the third type signal line 06. Considering the relatively large line width of the third type signal line 06, only the portion corresponding to the gap between the third type signal line 06 and the first sub-part 211 and the second sub-part 212 can be widened, resulting in W2 < w2. This design is beneficial for saving as much space as possible corresponding to the third type signal line 06 while ensuring the electrical connection between the first sub-part 211 and the second sub-part 212, thus improving the PPI.

[0055] In one embodiment of this application, such as Figure 8 As shown, along the thickness direction of the display panel 10, the connecting portion 222a of the second bridging portion 222 overlaps with the first portion 021.

[0056] The width of the orthographic projection of the first sub-part 211 and the second sub-part 212 on the substrate 01 in the second direction Y is h1, and the width of the orthographic projection of the connecting part 222a on the substrate 01 in the second direction Y is h2, where h2 > h1. At this time, the orthographic projection of the second bridging part 222 on the substrate 01 can cover the orthographic projection of the gap between the first sub-part 211 and the second sub-part 212 on the substrate 01.

[0057] With other conditions fixed, the larger the trace width, the lower the impedance of the trace can be. In the embodiments of this application, the second bridging portion 222 serves as a bridging structure connecting the first sub-part 211 and the second sub-part 212. When h2 > h1, it means that the width of the second bridging portion 222 can be larger, and the impedance corresponding to the second bridging portion 222 can be smaller. This is beneficial for reducing the overall impedance of the first type signal line 02 and offsetting the impedance increase caused by the bridging design.

[0058] Figure 9 This is a schematic diagram of a partial structure of a display panel provided in this application.

[0059] In one embodiment of this application, such as Figure 9 As shown, the plurality of first portions 021 include a first sub-part 211, a second sub-part 212 and a third sub-part 213 arranged adjacently, with the second sub-part 212 located between the first sub-part 211 and the third sub-part 213.

[0060] The multiple third-type signal lines 06 include a first sub-line 061 and a second sub-line 062 arranged along the first direction X. The first sub-part 211 and the second sub-part 212 are electrically connected through a second bridging portion 222 multiplexed by the first sub-line 061, and the second sub-part 212 and the third sub-part 213 are electrically connected through a second bridging portion 222 multiplexed by the second sub-line 062. In this embodiment, multiple second bridging portions 222 are provided in the first-type signal lines 02 to realize the electrical connection between the first parts 021, that is, multiple disconnection structures (referring to the disconnection structures between the first parts 021) are provided, which helps to further reduce the transfer of static charge from the edge of the panel to the interior of the panel.

[0061] Among them, the length of the second sub-part 212 can be smaller than that of the first sub-part 211 and the third sub-part 213. For multiple sets of two adjacent third-type signal lines 06, the spacing between the first sub-line 061 and the second sub-line 062 is smaller; when a portion of the third-type signal line 06 is multiplexed as the second bridging portion 222, the length of the second sub-part 212 can be smaller accordingly.

[0062] In one embodiment of this application, such as Figure 6 As shown, part of the third type signal line 06 is multiplexed as part of the second bridging portion 222. Along the first direction X, the width of the third type signal line 06 is W2.

[0063] Where W2 = w2, w2 is the width of the second bridging part 222.

[0064] In one possible implementation, such as Figure 6 As shown, W1 < W2 = w2, where W1 is the width of the second type signal line 05. It should be noted that the second type signal line 05 can transmit scan signals, while the third type signal line 06 can transmit fixed voltage signals. Based on the aforementioned voltage drop issue of the third type signal line 06, the line width of the third type signal line 06 can be set to be greater than the line width of the second type signal line 05.

[0065] In this embodiment, when a portion of the third-type signal line 06 is reused as the second bridging portion 222, W2 = w2 means that it is not necessary to widen the third-type signal line 06 additionally. This saves space, increases PPI, and helps reduce the coupling risk between the third-type signal line 06 and other structures within the display panel 10, thus reducing crosstalk. Since the third-type signal line 06 has a larger linewidth, the second bridging portion 222 can also overlap with the adjacent first portion 021. That is, this arrangement helps to further simplify the manufacturing process while ensuring the second bridging portion 222 provides good bridging.

[0066] In one embodiment of this application, such as Figure 6 As shown, the plurality of first portions 021 include adjacent first sub-parts 211 and second sub-parts 212, and the first sub-parts 211 and the second sub-parts 212 are electrically connected through a second bridging portion 222.

[0067] Along the first direction X, the distance between the first sub-part 211 and the second sub-part 212 is L1, and w2 > L1.

[0068] In this embodiment, the setting of L1 < W2 = w2 means that the multiplexed portion on the third type signal line 06 can overlap with the first sub-part 211 and the second sub-part 212, which helps to reduce the bridging difficulty between the second bridging portion 222 and the first sub-part 211 and the second sub-part 212.

[0069] In one embodiment of this application, such as Figure 2 As shown, the display panel 10 also includes a pixel circuit 03, which receives electrical signals transmitted by the first type of signal line 02. The electrical signals transmitted by the first type of signal line 02 can be used to control the on / off state of some transistors in the pixel circuit 03, that is, the first type of signal line 02 can be electrically connected to the gate of some transistors in the pixel circuit 03.

[0070] In particular, along the direction perpendicular to the plane where the display panel 10 is located, the disconnected portion between adjacent first portions 021 does not overlap with the pixel circuit 03.

[0071] In this embodiment, the location of the cross-layer bridging structure (second part 022) generally corresponds to the location of the gap between adjacent first parts 021. Considering that there are many via structures in the area where the pixel circuit 03 is located (the pixel circuit 03 contains a large number of transistors, and the transistors themselves have cross-layer structures), the arrangement of this embodiment helps to avoid the area where the pixel circuit 03 is located to realize the fabrication of the second part 022, avoids the via structure distribution in the area where the pixel circuit 03 is located being too dense, and simplifies the design.

[0072] Figure 10The equivalent circuit diagram corresponding to the pixel circuit provided in this application.

[0073] like Figure 10 As shown, the pixel circuit 03 may include a pulse width modulation sub-circuit 031 and an amplitude modulation sub-circuit 032. With the participation of the electrical signal output by the pulse width modulation sub-circuit 031, the amplitude modulation sub-circuit 032 can output a driving current to drive the light-emitting device to emit light.

[0074] The pulse width modulation sub-circuit 031 may include a first driving transistor T11, a first transistor T12, a second transistor T13, a third transistor T14, a first reset transistor T15, a fourth transistor T16, a fifth transistor T17, and a first capacitor C1. Furthermore, the pulse width modulation sub-circuit 031 can also receive electrical signals transmitted through the following signal lines: a first power signal line P1, a first data signal line D1, a first signal line G1, a second signal line S1, a first reset line V1, a first scan line EM1, a second scan line S2, and a third scan line S3. Please refer to [reference needed] for the connection methods of the aforementioned transistors, capacitors, and signal lines. Figure 11 This will not be elaborated upon here.

[0075] The amplitude modulation sub-circuit 032 may include a second driving transistor T21, a sixth transistor T18, a seventh transistor T19, an eighth transistor T20, a first selection transistor T22, a second selection transistor T23, a second capacitor C2, a third capacitor C3, a ninth transistor T24, a second reset transistor T25, a tenth transistor T26, and an eleventh transistor T27. Furthermore, the amplitude modulation sub-circuit 032 can also receive electrical signals transmitted through the following signal lines: the fourth scan line EM2, the aforementioned first scan line EM1, the second power signal line P2, the second data signal line D2, the fifth scan line S4, the sixth scan line S5, the second reset line V2, and the third signal line V3. Please refer to [reference needed] for the connection methods of the aforementioned transistors, capacitors, and signal lines. Figure 11 This will not be elaborated upon here.

[0076] At least a portion of the switch signal lines (where switch signal lines refer to signal lines electrically connected to the gate of a transistor) connected to the aforementioned pixel circuit 03 can be first-type signal lines 02. Furthermore, the first power supply signal line P1, the second power supply signal line P2, the third signal line V3, the first reset line V1, and the second reset line V2 can be the aforementioned third-type signal lines 06.

[0077] Figure 11 This is a schematic diagram of a display device provided in this application. Figure 12 A schematic diagram of another display device provided in this application.

[0078] This application provides a display device 20, combined with... Figure 11and Figure 12 The display device 20 includes the display panel provided in the above embodiments. For example... Figure 11 As shown, the display device 20 can be a borderless display device; such as Figure 12 As shown, the display device 20 can also be a video wall display, which may include multiple interconnected display panels 10. Furthermore, the display device 20 can also be an electronic device such as a computer or television.

[0079] When fabricating some of the signal lines in the display device 20 provided in this application embodiment, the risk of electrostatic breakdown is effectively reduced.

[0080] The same or similar parts between the various embodiments in this specification can be referred to mutually. In particular, the device embodiments and terminal embodiments are basically similar to the method embodiments, so the description is relatively simple, and the relevant parts can be referred to the description in the method embodiments.

Claims

1. A display panel, characterized in that, include: Substrate; A first type of signal line extending along a first direction, the first type of signal line comprising a first portion and a second portion; The first portion is located in the first metal layer, and adjacent first portions are disconnected from each other; the second portion is located in the second metal layer, and the second metal layer is located on the side of the first metal layer away from the substrate; The adjacent first portions are electrically connected through the second portion.

2. The display panel according to claim 1, characterized in that, The sheet resistance of the first metal layer is greater than that of the second metal layer.

3. The display panel according to claim 1, characterized in that, The first type of signal line passes through the display panel in the first direction.

4. The display panel according to claim 1, characterized in that, The display panel further includes a shift register circuit located in the display area; the output terminal of the shift register circuit is electrically connected to a second type of signal line located in the second metal layer and extending along a second direction, the second direction intersecting the first direction; Among them, a plurality of second portions include a first bridging portion, and a portion of the first type of signal line adjacent to the first portion is electrically connected to the second type of signal line through the first bridging portion.

5. The display panel according to claim 4, characterized in that, Along the first direction, the width w1 of the first bridging portion is greater than the width W1 of the second type of signal line.

6. The display panel according to claim 1, characterized in that, The display panel also includes a third type of signal line, which is located in the second metal layer and extends along a second direction, the second direction intersecting the first direction; Among them, the plurality of second portions include a second bridging portion, and a portion of the third type of signal line is multiplexed as at least a portion of the second bridging portion, wherein the third type of signal line transmits a fixed voltage signal.

7. The display panel according to claim 6, characterized in that, The third type of signal line is partially multiplexed as part of the second bridging portion; along the first direction, the width of the third type of signal line is W2; The plurality of first portions include adjacent first sub-parts and second sub-parts, the first sub-parts and the second sub-parts being electrically connected via the second bridging portion; along the first direction, the distance between the first sub-parts and the second sub-parts is L1; Where W2 < L1 < w2, and w2 is the width of the second bridging portion.

8. The display panel according to claim 7, characterized in that, Along the thickness direction of the display panel, the connecting portion of the second bridging portion overlaps with the first portion; The width of the orthographic projection of the first sub-part and the second sub-part onto the substrate in the second direction is h1, and the width of the orthographic projection of the connecting part onto the substrate in the second direction is h2, where h2 > h1.

9. The display panel according to claim 6, characterized in that, The plurality of first portions include a first sub-part, a second sub-part, and a third sub-part arranged adjacently, wherein the second sub-part is located between the first sub-part and the third sub-part; The plurality of third-type signal lines include a first sub-line and a second sub-line arranged along the first direction. The first sub-part and the second sub-part are electrically connected by a second bridging portion multiplexed by the first sub-line, and the second sub-part and the third sub-part are electrically connected by a second bridging portion multiplexed by the second sub-line.

10. The display panel according to claim 6, characterized in that, The third type of signal line is partially multiplexed as part of the second bridging portion; along the first direction, the width of the third type of signal line is W2; Where W2 = w2, w2 is the width of the second bridging portion.

11. The display panel according to claim 10, characterized in that, The plurality of first portions include adjacent first sub-parts and second sub-parts, the first sub-parts and the second sub-parts being electrically connected via the second bridging portion; along the first direction, the distance between the first sub-parts and the second sub-parts is L1, w2 > L1.

12. The display panel according to claim 1, characterized in that, The display panel further includes a pixel circuit, which receives the electrical signals transmitted by the first type of signal lines; Wherein, along the direction perpendicular to the plane where the display panel is located, the disconnected portion between adjacent first portions does not overlap with the pixel circuit.

13. A display device, characterized in that, Includes the display panel as described in any one of claims 1-12.

Images