Display panel and display device

Abstract

The invention discloses a display panel and a display device. The display panel comprises a substrate, a first signal line, a second signal line and a third signal line, wherein the second signal line is located on the side, away from the substrate, of the first signal line, the first signal line and the second signal line are at least partially overlapped in the direction perpendicular to the plane where the substrate is located, and the overlapped part is a first overlapped part. The third signal line is located on the side, away from the first signal line, of the second signal line, and the third signal line and the first overlapping part are at least partially not overlapped in the direction perpendicular to the plane where the substrate is located. The display panel can solve the problem that when multiple signal lines in an existing display panel are stacked up and down, the signal lines needing laser repair on the lower layer are blocked and cannot be repaired, it can be guaranteed that the positions needing laser repair are exposed, and laser repair is facilitated; display abnormity caused by damage or disconnection of the signal lines is eliminated, the display effect of the display panel is improved, and the yield of the display panel is increased.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more particularly to a display panel and a display device. Background Technology

[0002] With the continuous development of science and technology, more and more electronic devices with display functions are being widely used in people's daily lives and work, bringing great convenience to people's daily lives and work, and becoming an indispensable tool for people today.

[0003] In existing display panels, to improve display resolution and save space occupied by signal lines on the plane, signal lines from different layers are usually stacked in the same area. However, this stacking arrangement can obstruct lower-layer signal lines. If lower-layer signal lines are damaged or broken, they cannot be repaired due to obstruction, resulting in display abnormalities and affecting product yield. Summary of the Invention

[0004] The present invention provides a display panel and a display device that, through the design of the signal lines, pre-exposes the locations that need to be laser repaired, facilitating laser repair and improving display abnormalities caused by damage or breakage of the signal lines.

[0005] In a first aspect, embodiments of the present invention provide a display panel, including a substrate, a first signal line, a second signal line, and a third signal line; The second signal line is located on the side of the first signal line away from the substrate; along a direction perpendicular to the plane of the substrate, the first signal line and the second signal line at least partially overlap, and the overlapping portion is a first overlapping portion; The third signal line is located on the side of the second signal line away from the first signal line; wherein, along a direction perpendicular to the plane of the substrate, the third signal line does not overlap with the first overlapping portion at least partially.

[0006] Secondly, embodiments of the present invention also provide a display device, including a display panel provided in any embodiment of the present invention.

[0007] The technical solution of this invention, by providing a first signal line, a second signal line, and a third signal line in a display panel, wherein the second signal line is located on the side of the first signal line away from the substrate, and the first signal line and the second signal line at least partially overlap in a direction perpendicular to the plane of the substrate, and the overlapping portion is a first overlapping portion, can connect the two signal lines when the first signal line or the second signal line is damaged or broken, inputting the signal transmitted in the normal signal line to the damaged or broken signal line, thereby compensating for the problem of signal line damage or breakage. Simultaneously, with the third signal line located on the side of the second signal line away from the first signal line, and configured in a direction perpendicular to the plane of the substrate, the third signal line does not at least partially overlap with the first overlapping portion, ensuring that the third signal line does not obstruct the repair positions of the first and second signal lines. The embodiments of the present invention can solve the problem that when multiple signal lines are stacked on top of each other in existing display panels, the signal lines on the lower layer that need to be repaired are blocked and cannot be repaired. It can ensure that the position that needs to be repaired is exposed, making it convenient for repair, eliminating display abnormalities caused by damage or breakage of signal lines, improving the display effect of the display panel, and increasing the yield of the display panel. Attached Figure Description

[0008] Figure 1 This is a top view schematic diagram of a partial structure of a display panel provided in an embodiment of the present invention; Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the display panel along AA'. Figure 3 yes Figure 1 The diagram shows the structure of the pixel circuit in the display panel. Figure 4 and Figure 5 These are top views of two partial structures of the display panel provided in the embodiments of the present invention; Figure 6 yes Figure 4 The diagram shows a cross-sectional view of the display panel along BB'. Figure 7 yes Figure 5 The diagram shows a cross-sectional view of the display panel along CC'. Figure 8 and Figure 9 These are top views of partial structures of two other display panels provided in embodiments of the present invention; Figure 10 and Figure 11 These are top views of partial structures of two more display panels provided in embodiments of the present invention; Figure 12 and Figure 13These are top views of partial structures of two more display panels provided in embodiments of the present invention; Figure 14 and Figure 15 These are top views of partial structures of two more display panels provided in embodiments of the present invention; Figure 16 and Figure 17 These are top views of partial structures of two more display panels provided in embodiments of the present invention; Figure 18 yes Figure 16 The diagram shows a cross-sectional view of the display panel along DD'. Figure 19 yes Figure 17 The diagram shows a cross-sectional view of the display panel along EE'. Figure 20 and Figure 21 These are top views of partial structures of two more display panels provided in embodiments of the present invention; Figure 22 This is a top view of a partial structure of another display panel provided in an embodiment of the present invention; Figure 23 and Figure 24 These are top views of partial structures of two more display panels provided in embodiments of the present invention; Figure 25 These are top views of partial structures of two more display panels provided in embodiments of the present invention; Figure 26 This is a top view of a partial structure of another display panel provided in an embodiment of the present invention; Figure 27 This is a top view of a partial structure of another display panel provided in an embodiment of the present invention; Figure 28 and Figure 29 yes Figure 25 The diagram shows two cross-sectional structures of the display panel along FF'. Figure 30 yes Figure 25 The diagram shows another cross-sectional structure of the display panel along FF'. Figure 31 This is a cross-sectional view of a display panel provided in an embodiment of the present invention. Figure 32 This is a schematic diagram of another pixel circuit structure provided in an embodiment of the present invention; Figure 33 This is a cross-sectional view of another display panel provided in an embodiment of the present invention. Figure 34 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0009] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0010] The terminology used in the embodiments of this invention is for the purpose of describing specific embodiments only and is not intended to limit the invention. It should be noted that directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this invention are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this invention. Furthermore, in the context, it should be understood that when referring to an element being formed "on" or "below" another element, it can be formed not only directly on or below the other element, but also indirectly on or below it through intermediate elements. The terms "first," "second," etc., are used for descriptive purposes only and do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0011] The term "comprising" and its variations as used in this invention are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment".

[0012] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish the corresponding contents and are not used to limit the order or interdependence.

[0013] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0014] Figure 1 This is a top view schematic diagram of a partial structure of a display panel provided in an embodiment of the present invention. Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the display panel along AA'. Figure 3 yes Figure 1 The schematic diagram of the pixel circuit in the display panel shown is for reference. Figures 1-3The display panel has multiple pixel units 01 arranged in an array along the row and column directions. Each pixel unit 01 includes multiple sub-pixels 001 of different colors, such as red, green, and blue sub-pixels 001. To control the display of the image by the arrayed pixel units 01, a pixel circuit 70 is set up for each sub-pixel 001 to drive each sub-pixel 001 in each pixel unit 01 to emit light. By having different colored sub-pixels 001 emit light at their respective preset brightness, the color matching of the pixel units 01 can be achieved, so that a specific pixel unit 01 displays a specific color, and the overall display effect is a picture. Specifically, to control the brightness of each sub-pixel 001, a data signal line DATA, a first power supply voltage signal line PVDD, and a second power supply voltage signal line PVEE are provided. Each data signal line DATA provides a preset data signal Vdata to each sub-pixel 001, and the first power supply voltage signal line PVDD provides a fixed first power supply voltage signal V. PVDD The second power supply voltage signal line PVEE provides a fixed second power supply voltage signal V. PVEE Therefore, by writing the data signal Vdata into the pixel circuit 70, the conduction current in the series path formed by the first transistor, the third transistor, the sixth transistor, and the light-emitting element 60 can be controlled. The formula for the conduction current is: The brightness of the light-emitting element 60 is positively correlated with the conduction current, thereby enabling the adjustment of the brightness of the light-emitting element 60.

[0015] However, research has found that in certain display panel layout designs, the data signal line DATA, the first power supply voltage signal line PVDD, and the second power supply voltage signal line PVEE are typically arranged to extend along the column direction. Furthermore, in a direction perpendicular to the plane of the substrate, the first power supply voltage signal line PVDD is positioned above the data signal line DATA, and the second power supply voltage signal line PVEE is positioned above the first power supply voltage signal line PVDD. The orthographic projections of the data signal line DATA and the first power supply voltage signal line PVDD onto the plane of the substrate are both located within the orthographic projection of the second power supply voltage signal line PVEE onto the plane of the substrate. This creates a stacked arrangement of the second power supply voltage signal line PVEE, the first power supply voltage signal line PVDD, and the data signal line DATA from top to bottom. This concentrates the three signal lines in a specific area along the row direction, compressing their occupied space and helping to increase the number of sub-pixels 001, thereby improving the resolution of the display panel. Furthermore, since three data signal lines DATA corresponding to the red, green, and blue sub-pixels 001 need to be set between adjacent pixel units 01, and based on the high resolution requirements of the display panel, not only is the size of the pixel unit 01 required to be small, but the data signal lines DATA also need to have a narrow line width. In the actual manufacturing process, the narrow data signal lines DATA are prone to damage and breakage, causing the data signal Vdata to be unable to be written into the pixel circuits 70 of each sub-pixel 001 arranged along the column direction and connected to the data signal line DATA, thus preventing these sub-pixels 001 from emitting light normally. Moreover, as can be seen from the conduction current formula, the data signal Vdata and the driving current I in the pixel circuit 70 are actually negatively correlated; the smaller the data signal Vdata voltage, the larger the driving current. This causes the sub-pixels 001 that cannot receive the data signal Vdata to remain in a constantly lit state, and their brightness is at its maximum, which will macroscopically present as an abnormal display phenomenon of bright lines.

[0016] Based on this, to address the issue of bright lines caused by damage or breakage of the data signal line DATA, the inventors propose a laser repair solution. This involves connecting the data signal line DATA to other signal lines, using these other lines to provide signals to the data signal line DATA. This reduces the brightness of the entire row of sub-pixels 001 connected to the data signal line DATA, resulting in a dark line display. Since the sub-pixels 001 are small, the dark lines have minimal impact on the display panel's appearance, thus achieving a repair effect. For example, the first power supply voltage signal line PVDD can be connected to the data signal line DATA at a specific location using laser melting, providing the first power supply voltage signal V to the data signal line DATA. PVDD The first power supply voltage signal V with a higher voltage PVDDThe data is written to each sub-pixel 001 connected to the data signal line DATA, making it appear in a dark state, thus achieving the repair effect.

[0017] However, further research revealed that due to the stacking arrangement of the second power supply voltage signal line PVEE, the first power supply voltage signal line PVDD, and the data signal line DATA, the projection of the second power supply voltage signal line PVEE covers the first power supply voltage signal line PVDD. If a laser is projected from above onto the first power supply voltage signal line PVDD for laser repair, the second power supply voltage signal line PVEE, the first power supply voltage signal line PVDD, and the data signal line DATA will be fused together simultaneously. This will not only prevent the data signal line DATA from receiving the first power supply voltage signal V, but also... PVDD This can also cause a short circuit between the first power supply voltage signal line PVDD and the second power supply voltage signal line PVEE, resulting in signal abnormalities and causing display abnormalities across the entire display panel. In other words, because the second power supply voltage signal line PVEE blocks the laser repair area of ​​the first power supply voltage signal line PVDD and the data signal line DATA, damaged or broken data signal lines DATA cannot be repaired by laser, and the problem of bright lines on the display panel cannot be resolved.

[0018] To address the technical problems described above, embodiments of the present invention also provide a display panel. The display panel includes a substrate, a first signal line, a second signal line, and a third signal line; the second signal line is located on the side of the first signal line away from the substrate; along a direction perpendicular to the plane of the substrate, the first signal line and the second signal line at least partially overlap, and the overlapping portion is a first overlapping portion; the third signal line is located on the side of the second signal line away from the first signal line; wherein, along a direction perpendicular to the plane of the substrate, the third signal line and the first overlapping portion at least partially do not overlap.

[0019] First, the first, second, and third signal lines are traces in the display panel used to drive and control the emission of sub-pixels, providing driving or control signals to the corresponding driving and control circuits. The signals provided on them directly or indirectly affect the display effect of the display panel. The second signal line is located on the side of the first signal line furthest from the substrate, indicating that the second signal line is on top of the first signal line. Along the direction perpendicular to the plane of the substrate, the first and second signal lines at least partially overlap. This means that when either the first or second signal line is damaged or broken, and needs to be connected to compensate for the damage or breakage preventing signal input, laser melting can be performed at the overlapping location. In other words, the first overlapping portion formed by the first and second signal lines is actually the laser repair area for both signal lines. Furthermore, when a third signal line is also provided in the display panel, and this third signal line is located on the side of the second signal line away from the first signal line, indicating that the third signal line is on top of the second signal line, in order to avoid the third signal line obscuring the laser repair area of ​​the first and second signal lines, i.e., the first overlapping portion, the third signal line needs to be additionally designed. That is, it is set to be at least partially non-overlapping with the first overlapping portion along the direction perpendicular to the plane of the substrate, avoiding at least a portion of the first overlapping portion. Thus, the part of the first overlapping portion that does not overlap with the third signal line will not be obscured by the third signal line. In other words, the positions of the second and first signal lines that need to be laser repaired can be exposed, facilitating laser repair. By connecting the second signal line to the first signal line, a signal is provided to the damaged or broken first or second signal line, ensuring that the load connected to the first or second signal line receives the corresponding signal, compensating for the impact of damage or breakage on the load.

[0020] Taking the first signal line as the data signal line, the second signal line as the first power supply voltage signal line, and the third signal line as the second power supply voltage signal line as an example, when the data signal line of the lower layer is damaged or broken, by designing the second power supply voltage signal line to avoid the first overlapping part where the first power supply voltage signal line and the data signal line overlap, the first power supply voltage signal line and the data signal line can be connected at the avoided position by laser melting to realize the laser repair operation. In this way, the data signal line receives the first power supply voltage signal, controls the sub-pixel connected to the data signal line to be in a dark state, and solves the problem of the sub-pixel being constantly lit caused by damage or breakage of the data signal line.

[0021] The above technical solution, by setting a first signal line, a second signal line, and a third signal line in the display panel, wherein the second signal line is located on the side of the first signal line away from the substrate, and the first signal line and the second signal line at least partially overlap in a direction perpendicular to the plane of the substrate, and the overlapping part is the first overlapping portion, can be used to connect the two signal lines when the first signal line or the second signal line is damaged or broken, by using a laser repair scheme at the first overlapping portion formed by the first and second signal lines, and inputting the signal transmitted in the normal signal line into the damaged or broken signal line, thereby compensating for the problem of signal line damage or breakage. Simultaneously, with the third signal line located on the side of the second signal line away from the first signal line, and the third signal line positioned in a direction perpendicular to the plane of the substrate, at least partially not overlapping the first overlapping portion, it can be ensured that the third signal line will not obstruct the position of the first and second signal lines that needs laser repair. Therefore, laser repair can be performed from top to bottom to fuse and connect the second signal line and the first signal line. The embodiments of the present invention can solve the problem that when multiple signal lines are stacked on top of each other in existing display panels, the lower layer signal lines that need laser repair are blocked and cannot be repaired. It can ensure that the position that needs laser repair is exposed, making it convenient for laser repair, eliminating display abnormalities caused by damage or breakage of signal lines, improving the display effect of the display panel, and increasing the yield of the display panel.

[0022] The above is the core idea of ​​this invention. The technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] Figure 4 and Figure 5 These are top views of two partial structures of the display panel provided in embodiments of the present invention. Figure 6 yes Figure 4 The diagram shows a cross-sectional view of the display panel along BB'. Figure 7 yes Figure 5 The diagram shown is a cross-sectional view of the display panel along CC'. (Refer to...) Figures 4-7 The display panel includes a substrate 40, a first signal line 10, a second signal line 20, and a third signal line 30. The second signal line 20 is located on the side of the first signal line 10 away from the substrate 40. Along a direction perpendicular to the plane of the substrate 40, the first signal line 10 and the second signal line 20 at least partially overlap, and the overlapping portion is a first overlapping portion 21. The third signal line 30 is located on the side of the second signal line 20 away from the first signal line 10. Along a direction perpendicular to the plane of the substrate 40, the third signal line 30 and the first overlapping portion 21 at least partially do not overlap.

[0024] by Figure 4 As shown in the example, the first signal line 10 and the third signal line 30 are both signal lines extending along the first direction Y, and the second signal line 20 is a signal line extending along the second direction X. The overlapping portion of the second signal line 20 and the first signal line 10 forms a first overlapping portion 21. Here, the first direction Y can be understood as the column direction, and the second direction X can be understood as the row direction. By setting the third signal line 30, which also extends along the first direction Y, to have a non-overlapping area with the first overlapping portion 21, at least a portion of the first overlapping portion 21 is exposed relative to the third signal line 30. This allows for laser repair of the first overlapping portion 21 when the first signal line 10 is broken and cannot provide a signal to the load. This connects the second signal line 20 and the first signal line 10 at the overlapping position, allowing the second signal line 20 to provide a signal to the first signal line 10. This avoids the problem of the load connected to the first signal line 10 not receiving a signal due to a broken first signal line 10.

[0025] by Figure 5 As shown in the example, the first signal line 10, the second signal line 20, and the third signal line 30 all extend along the first direction Y. The first signal line 10 and the second signal line 20 completely overlap, forming a first overlapping portion 21. Similarly, by providing a third signal line 30 that also extends along the first direction Y, and having a non-overlapping area with the first overlapping portion 21, at least a portion of the first overlapping portion 21 can be exposed relative to the third signal line 30. This allows for laser repair of the first overlapping portion 21 when the first signal line 10 is broken and unable to provide a signal to the load. This connects the second signal line 20 to the first signal line 10 at the overlapping position, allowing the second signal line 20 to provide a signal to the first signal line 10, thereby avoiding the problem of the connected load not receiving a signal due to a broken first signal line 10.

[0026] like Figure 4 and Figure 5In the embodiments shown, the extension directions of the three signal lines can be the same for two or all three. In these embodiments, ignoring the area on the third signal line 30 that does not overlap with the first overlapping portion 21, the two or three signal lines extending in the same direction, including the third signal line 30, are actually arranged in a projection overlapping manner. This ensures that the signal lines extending in the same direction and on different layers can be centrally arranged in the same space on the plane, saving planar space, that is, reducing the space occupied by the wiring on the panel plane, facilitating the layout of other display functional structures, freeing up space for the effective display area, thereby helping to increase the display area and improve the resolution of the display panel. Based on this, it can be understood that the embodiments of the present invention essentially take into account that when the third signal line 30 located on the upper layer extends in the same direction as at least one of the first signal line 10 and the second signal line 20, that is, if the third signal line 30 does not provide a non-overlapping area for the first overlapping portion 21, the third signal line 30 will completely block the first signal line 10 or the second signal line 20. This results in the inability to perform laser repair connection of the two signal lines at the overlapping position of the first signal line 10 and the second signal line 20, i.e., the first overlapping portion 21, and the inability to repair the damaged or broken first signal line 10 or the second signal line 20. In this embodiment of the invention, the third signal line 30 located on the upper layer generally overlaps with the projections of other signal lines in the same direction on the lower layer. However, the local position of the first overlapping portion 21, which is the area where the first signal line 10 and the second signal line 20 on the lower layer overlap, is set to not overlap in projection. This can simultaneously meet the high resolution of the display panel and the signal line repair requirements, eliminating the need for extensive planning and adjustment of the signal line layout, reducing design difficulty, saving design costs, and facilitating laser repair when the signal line is damaged or broken, eliminating the resulting display abnormalities, improving the display effect of the display panel, and increasing the yield of the display panel.

[0027] Furthermore, it is understood that when the first signal line 10 is damaged or broken and the second signal line 20 is needed to provide a signal, a third signal line 30 located on the upper layer can be provided. The third signal line 30 can be designed to avoid the first overlapping portion 21 formed by the overlap of the first signal line 10 and the second signal line 20, thereby exposing at least part of the overlapping area of ​​the first signal line 10 and the second signal line 20. Laser repair can be performed in the overlapping area to connect the first signal line 10 and the second signal line 20. Of course, when the second signal line 20 is damaged or broken and the first signal line 10 is needed to provide a signal, the second signal line 20 can also be connected to the first signal line 10 by laser repair. This invention is not limited in this respect.

[0028] Continue to refer to Figure 4 and Figure 5In an optional embodiment, at least one first cutout area 31 is provided on the third signal line 30; along a direction perpendicular to the plane where the substrate 40 is located, the third signal line 30 overlaps with the second signal line 20, and the first overlap portion 21 is at least partially located within the first cutout area 31.

[0029] The overlap between the third signal line 30 and the second signal line 20 indicates that, under normal circumstances, the third signal line 30 and the second signal line 20 are typically arranged in an overlapping manner, or even completely overlapping, or one completely covers the other. Figure 1 The second power supply voltage signal line PVEE, as shown, completely covers the first power supply voltage signal line PVDD, which is the second signal line 20, as the third signal line 30. Normally, the overlap of the third signal line 30 and the second signal line 20 would obstruct the first overlap portion 21 formed by the overlap of the first signal line 10 and the second signal line 20. However, in this embodiment of the invention, considering that the first signal line 10 and the second signal line 20 may be damaged or broken and require laser repair, the third signal line 30 is designed to avoid overlapping with the first overlap portion 21 at least partially. Based on this, the third signal line 30 avoidance design of this embodiment essentially involves setting a first cutout area 31 on the third signal line 30. Furthermore, the position of the first cutout area 31 satisfies the condition that at least part of the first overlap portion 21 is located within the first cutout area 31. This ensures that at least part of the first overlap portion 21 can be exposed through the first cutout area 31, thereby facilitating the laser repair of the second signal line 20 and the first signal line 10. In the actual manufacturing process, since signal lines are usually formed by etching after preparing a whole metal layer, the first hollow area 31 on the third signal line 30 can be formed by removing the metal material of the first hollow area 31 by adjusting the etching pattern in the patterning process.

[0030] It should be noted that, as those skilled in the art will understand, on the one hand, signal lines located on different layers, in addition to signal transmission requirements, also need to be insulated to avoid signal interference. Therefore, insulating layers are set between signal lines on adjacent layers. On the other hand, in addition to pixel circuits and driving circuits including signal lines, the substrate 40 of the display panel also needs to have light-emitting functional layers with light-emitting elements and encapsulation layers on the circuits. Therefore, insulating layers are needed between the first signal line 10, the second signal line 20, and the third signal line 30. Furthermore, other film layers cover the upper layers of the first signal line 10, the second signal line 20, and the third signal line 30. Therefore, the fact that at least a portion of the first overlapping portion 21 mentioned in this embodiment is exposed relative to the third signal line 30 does not mean it is actually exposed to the surface of the display panel, but rather that the target position of the second signal line 20 is not blocked by the third signal line 30 during laser repair from top to bottom. Similarly, the fact that the signal line on the upper layer covers the signal line on the lower layer does not mean that the two signal lines are in direct contact and stacked vertically, but rather that there are insulating layers or other film layers in between, representing a projected overlap.

[0031] Figure 8 and Figure 9 These are top views of partial structures of two other display panels provided in embodiments of the present invention, for reference. Figure 8 and Figure 9 In an optional embodiment, multiple first signal lines overlap with the same second signal line 20 along a direction perpendicular to the plane of the substrate 40, forming a group of first signal lines 100. Multiple first signal lines 10 in the same group of first signal lines 100 extend along a first direction Y and are arranged along a second direction X; both the first direction Y and the second direction X are parallel to the plane of the substrate 40 and intersect. At least a portion of each first overlap portion 21 formed by the overlap of multiple first signal lines 10 in the same group of first signal lines 10 with a third signal line 30 along a direction perpendicular to the plane of the substrate 40 is located within at least one first cutout area 31.

[0032] In this embodiment, the second signal line 20 and the first signal line 10 both extend along the first direction Y, i.e., the column direction. In other embodiments, the second signal line 20 may extend along the second direction X, i.e., the row direction. In this example, there are three first signal lines 10 that overlap with the same second signal line 20. In other embodiments, there is no limitation.

[0033] Taking the example of the signal line extension direction design, when three first signal lines 10 overlap with the same second signal line 20 and correspondingly form three first overlapping portions 21, one or more first hollow areas 31 can be set on the third signal line 30 along the first direction Y, i.e., the column direction, to ensure that at least a part of each of the three first overlapping portions 21 can be located in a first hollow area 31, so that each first overlapping portion 21 can be exposed relative to the third signal line 30 through the first hollow area 31, which facilitates laser repair at the corresponding first overlapping portion 21 position when any first signal line 10 is damaged or broken.

[0034] like Figure 8 In this context, at least a portion of any one of the three first overlapping portions 21 is exposed through the same first cutout area 31, indicating that the three first signal lines 10 share a common first cutout area 31 for exposure; for example... Figure 9 In this design, at least a portion of each of the three first overlapping portions 21 is exposed through a different first cutout area 31, indicating that a first cutout area 31 is provided for each of the three first signal lines 10. The above two examples are merely two illustrations of the present invention. Optionally, two of the three first overlapping portions 21 may share a single first cutout area 31, while the other may have a separate first cutout area 31. Those skilled in the art can modify the design according to actual needs, and no limitations are imposed here. Furthermore, as... Figure 8 and Figure 9 In the example where the first signal line 10, the second signal line 20, and the third signal line 30 all extend along the first direction Y, when the extension directions of the three signal lines are not consistent, there may be a situation where multiple first overlapping portions 21 formed by the overlap of multiple first signal lines 10 and second signal lines 20 are all blocked by the third signal line 30. In this case, one or more first hollow areas 31 can be set on the third signal line 30 to expose each first overlapping portion 21 for easy laser repair.

[0035] Figure 10 and Figure 11 This is a top view of a partial structure of two more display panels provided in embodiments of the present invention, with reference to... Figure 10 and Figure 11 In one optional embodiment, multiple first cutout areas 31 disposed on the same third signal line 30 are located at different positions in the first direction Y.

[0036] Taking the overlap of three first signal lines 10 with the same second signal line 20 as an example, since both the first signal line 10 and the second signal line 20 extend along the first direction Y, i.e., the column direction, the first overlap portion 21 formed by the overlap of the first signal line 10 and the second signal line 20 is the area where the first signal line 10 is located. Correspondingly, a first cutout area 31 can be set on the third signal line 30 for each of the three first overlap portions 21, i.e., the first signal lines 10, so that a portion of the first overlap portion 21 of each first signal line 10 is located within the first cutout area 31, ensuring that at least a portion of each first overlap portion 21 is exposed through the first cutout area 31. Further, it can be understood that since the three first signal lines 10 are arranged along the second direction X, i.e., the row direction, when the three corresponding first cutout areas 31 on the third signal line 30 are also arranged in the second direction X, the effective linewidth of the third signal line 30 at this position will be reduced, which will significantly increase the signal transmission impedance of the third signal line 30 at this position and affect the signal transmission quality on the third signal line 30. In this embodiment, a first cutout area 31 is separately provided on the third signal line 30 for each first overlapping portion 21, and each first cutout area 31 is located at a different position in the first direction Y, i.e., the column direction. This can avoid the problem that when multiple first cutout areas 31 are concentrated at the same position in the column direction, and multiple first overlapping portions 21 are jointly provided with a first cutout area 31, the effective line width of the third signal line 30 at that position becomes significantly smaller, which has a significant impact on impedance. This can ensure the signal transmission quality to a certain extent.

[0037] Continue to refer to Figure 9 and Figure 11 Optionally, multiple first signal lines 10 in the same first signal line group 100 include first sub-signal lines 11 and second sub-signal lines 12, which are adjacent in the second direction X. The first cutout area 31 includes a first sub-cutout area 311 and a second sub-cutout area 312. Along a direction perpendicular to the plane of the substrate 40, the first sub-signal line 11 at least partially overlaps with the third signal line 30, and the overlapping portion forms a first sub-overlapping portion 211. The second sub-signal line 12 at least partially overlaps with the third signal line 30, and the overlapping portion forms a second sub-overlapping portion 212. In the same first signal line group 100, the first sub-overlapping portion 211 is at least partially located within the first sub-cutout area 311, and the second sub-overlapping portion 212 is at least partially located within the second sub-cutout area 312.

[0038] Furthermore, the multiple first signal lines 10 in the same first signal line group 100 also include third sub-signal lines 13, and the first cutout area 31 also includes a third sub-cutout area 313. Along a direction perpendicular to the plane where the substrate 40 is located, the third sub-signal line 13 and the third signal line 30 at least partially overlap, and the overlapping portion forms a third sub-overlapping portion 213. In the same first signal line group 100, the third sub-overlapping portion 213 is at least partially located within the third sub-cutout area 313.

[0039] Continue to refer to Figure 10 and Figure 11 Optionally, the width D1 of the gap between two adjacent first hollow areas 31 in the first direction Y satisfies: D1≥3μm.

[0040] At this time, there can be a certain width of gap between two adjacent first hollow areas 31 in the column direction, which can avoid the problem of incorrect connection of hollow areas during the manufacturing process due to the hollow area gap being too small. To a certain extent, it can improve the signal line impedance and improve the signal transmission quality.

[0041] Figure 12 and Figure 13 This is a top view of a partial structure of two more display panels provided in embodiments of the present invention, with reference to... Figure 12 and Figure 13 Optionally, the plurality of first cutout areas 31 on the same third signal line 30 include a plurality of cutout area groups 310, the number of each cutout area group 310 being equal to the number of first signal lines 10 in the first signal line group 100. Along a direction perpendicular to the plane of the substrate 40, the first overlap portion 21 formed by the overlap of each first signal line 10 in the same first signal line group 100 with the third signal line 30 is at least partially located within each first cutout area 31 in the same cutout area group 310.

[0042] The display panel includes multiple pixel areas 1000, and the third signal line 30 extends through the multiple pixel areas 1000. Each first cutout area 31 in the cutout area group 310 is located within the same pixel area 1000, and each cutout area group 310 is located within different pixel areas 1000, such as... Figure 12 As shown. Alternatively, each first cutout area 31 within the same cutout area group 310 is located in a corresponding position within a different adjacent pixel area 1000, and the first cutout areas 31 within different cutout area groups 310 are located within different pixel areas 1000, as shown. Figure 13 As shown.

[0043] These two embodiments essentially optimize the density of the first cutout areas 31, based on setting a first cutout area 31 for each first signal line 10. For example... Figure 12 and Figure 13In the illustrated embodiment, the three first cutout areas 31 corresponding to the three first signal lines 10 are configured as a cutout area group 310. Simultaneously, referring to the pixel areas 1000 arrayed in the display panel (illustrated as a grid formed by intersecting thick black dashed lines), the positions of the cutout area group 310 are designed differently. Figure 12 In the illustrated embodiment, each pixel area 1000 is provided with a corresponding hollow area group 310. Laser repair can be performed in each pixel area 1000 through the first hollow area 31 of the hollow area group 310, ensuring that all first signal lines 10 within that pixel area 1000 can be repaired by laser. This prevents sub-pixels within that pixel area 1000 from being unable to receive signals from the first signal lines 10, thus avoiding impact on the light emission effect. This arrangement, with its high-density hollow areas, can address broken lines at any position on any first signal line 10, ensuring the repair effect of the display panel. Figure 13 In the embodiment shown, each pixel area 1000 is provided with a first cutout area 31. That is, three pixel areas 1000 in the column direction correspond to one cutout area group 310. This can appropriately reduce the number of first cutout areas 31 provided for the same first signal line 10 in the column direction on the same third signal line 30, thereby reducing the problem of reduced effective line width and increased impedance of the third signal line 30 caused by setting cutout areas. This can achieve the effect of balancing the repair of broken first signal line 10 and the signal transmission quality on the third signal line 30.

[0044] It should be noted that since the occurrence of broken first signal lines 10 is random, and the location of the breakage on each broken first signal line 10 is also random, the first cutout areas 31 set on the third signal line 30 for each first signal line 10 in this embodiment are all preset. Laser repair of the first signal line 10 needs to be performed within a specific first cutout area 31 based on the actual broken first signal line 10 and its location. In other words, not all first cutout areas 31 require laser repair. Therefore, the density of the first cutout areas 31 can be adjusted according to actual needs when pre-designing them. For example, when the first signal line 10 has a narrow width and a high probability of breakage, a density such as... Figure 12 The high-density setting shown is one option; conversely, when the width of the first signal line 10 is relatively wide and the probability of a breakage is low, a lower density setting can be used. Figure 13 The low-density setting shown can be further simplified; even lower densities are not limited here. Additionally, in other embodiments of the present invention, the density of the first cutout area 31 can be set differently in different areas of the display panel based on the probability of the first signal line 10 breaking.

[0045] Continue to refer to Figures 10-13Optionally, the width L1 of the first hollow area 31 in the second direction X satisfies: L1≥5μm.

[0046] At this time, the width of the first hollow area 31 is large enough to be greater than the thermal influence range of the laser beam during laser repair, thereby avoiding damage to the third signal line 30 during laser repair and ensuring the signal transmission of the third signal line 30.

[0047] Figure 14 and Figure 15 This is a top view of a partial structure of two more display panels provided in embodiments of the present invention, with reference to... Figure 14 and Figure 15 ,refer to Figure 14 and Figure 15 Optionally, the multiple first signal lines 10 in the same first signal line group 100 include edge signal lines 101 and non-edge signal lines 102; in the second direction X, the edge signal lines 101 are located at the edge position in the same first signal line group 100, and the non-edge signal lines 102 are located at the non-edge position in the same first signal line group 100.

[0048] The first cutout area 31 includes a notch-type cutout area 3101 and a hole-type cutout area 3102. The notch-type cutout area 3101 is located on the side of the third signal line 30, and the hole-type cutout area 3102 is located in the non-edge region of the third signal line 30. Along a direction perpendicular to the plane of the substrate 40, the first overlap portion 21 formed by the overlap of the edge signal line 101 and the third signal line 30 is at least partially located within the notch-type cutout area 3101, and the first overlap portion 21 formed by the overlap of the non-edge signal line 102 and the third signal line 30 is at least partially located within the hole-type cutout area 3102.

[0049] In this embodiment, for the middle first signal line 10 (i.e., the non-edge signal line 102) among the three first signal lines 10 arranged along the direction of travel, when designing the first hollow area 31, a hole can be made in the middle of the first signal line 10 to form a hollow area 3102, exposing at least part of the overlapping area between the non-edge signal line 102 and the second signal line 20, thereby facilitating laser repair of the non-edge signal line 102; for the first signal lines 10 located on both sides of the three first signal lines 10 arranged along the direction of travel (i.e., the edge signal lines 101), when designing the first hollow area 31, a notch can be directly opened on the edge of the third signal line 30 to form a notch-type hollow area 3101, exposing at least part of the overlapping area between the edge signal line 101 and the second signal line 20, thereby facilitating laser repair of the edge signal line 101. In this configuration, the first cutout area 31 located at the edge occupies a small area on the third signal line 30, which can reduce the impact of the cutout area on the third signal line 30 to a certain extent and ensure the transmission quality of the signal on the third signal line 30.

[0050] Further optionally, the width L of the notch-shaped hollow area 3101 in the second direction X 11 The width L of the perforated hollow area 3102 in the second direction X 12 Satisfy: L 12 / 2<L 11 ≤L 12 .

[0051] Among them, compared with the central hollowed-out area 3102, the edge notch-type hollowed-out area 3101 can be relatively narrower in the row direction, that is, L 11 ≤L 12 This ensures that all the first signal lines 10 at the edges are exposed. Simultaneously, it can be understood that among the three first signal lines 10 overlapping with the same second signal line 20, the outer edges of the first signal lines 10 at the two side edges are flush with the two side edges of the second signal line 20. This maximizes the gap between the three first signal lines 10 while minimizing the space occupied by the three first signal lines 10 and one second signal line 20 in the row direction, reducing both the manufacturing precision and difficulty, and minimizing interference between the first signal lines 10. Based on this, considering that the center of the laser-repaired target area needs to be exposed when setting the first hollow area 31, the center line of each first signal line 10 in the row direction needs to be exposed. Therefore, the minimum width of the notch-type hollow area 3101 at the edge in the row direction should be greater than half the width of the central hole-type hollow area 3102 in the row direction, i.e., L... 12 / 2<L 11 .

[0052] Continue to refer to Figure 14 and Figure 15 In one optional embodiment, the first signal line 10 extends along a first direction Y; the display panel includes a plurality of pixel regions 1000 arranged along a second direction X, each pixel region 1000 including a light-shielding region 1002 and a light-transmitting region 1001, and at least one pixel region 1000 further including a semi-transparent region 1003; wherein the first direction Y and the second direction X are both parallel to and intersect the plane of the substrate 40; the light transmittance of the light-transmitting region 1001, the semi-transparent region 1003, and the light-shielding region 1002 decreases sequentially. In the second direction X, the third signal line 30 is located between two adjacent pixel regions 1000, the notch-shaped cutout region 3101 is located between the light-transmitting regions 1001 of two adjacent pixel regions 1000, and the semi-transparent region 1003 is located between the notch-shaped cutout region 3101 and the light-transmitting region 1001 and is adjacent to the notch-shaped cutout region 3101.

[0053] In this diagram, pixel area 1000 is illustrated by a grid formed by intersecting thick black dashed lines. Pixel area 1000 simultaneously includes a light-shielding area 1002 and a light-transmitting area 1001, indicating that the display panel requires light transmission, such as a transparent display or an under-display fingerprint display. Taking a transparent display as an example, the sub-pixels and corresponding pixel circuits in each pixel area 1000 are typically made of opaque semiconductor or conductive materials, thus forming the light-shielding area 1002 to ensure the display effect of each pixel area 1000. In the diagram, this is simply illustrated as the area where the wiring is located, forming the light-shielding area 1002. Based on this, through specific transparent materials or the avoidance design of non-transparent signal lines, a light-transmitting area 1001 can be formed in each pixel area 1000, while simultaneously ensuring the light transmission effect of each pixel area 1000. In the diagram, this is simply illustrated as the grid area formed by the intersection of wiring, forming the light-transmitting area 1001. For signal lines that extend along the column direction and are opaque, they can be positioned between adjacent pixel areas 1000 to avoid the light-transmitting area 1001 of pixel area 1000. Thus, the display panel as a whole can simultaneously exhibit both display and light-transmitting properties, achieving a transparent display screen. Based on this, in this embodiment of the invention, a first hollow area 31 is provided on the third signal line 30 to avoid the first overlapping portion 21 formed by the overlap of the first signal line 10 and the second signal line 20. When the first signal line 10 is broken, laser repair can be performed in the corresponding first hollow area 31. Compared with the hole-type hollow area 3102, the notch-type hollow area 3101 has a smaller area. At the same time, the outer edge of the first signal line 10 is flush with the edge of the third signal line 30. Therefore, when performing laser repair, the heat-affected zone of the laser beam will cover the position of the transmission area adjacent to the third signal line 30, so that the inorganic and organic insulating layers that were originally the transmission area are burned, the thickness of the insulating layer will be reduced, and the light transmittance will be reduced, thereby forming a semi-transparent area 1003 adjacent to the notch-type hollow area 3101. Furthermore, since not all notched cutout areas 3101 will undergo laser repair, only some pixel areas 1000 may have a semi-transparent area 1003, which means that the notched cutout area 3101 at that location has been laser repaired, forming a laser repair mark.

[0054] Optionally, the shape of the perforated area 3102 includes a circle, an ellipse, or a regular polygon.

[0055] It is understandable that the perforated area 3102 needs to ensure that the laser beam can completely pass through during laser repair; therefore, its shape should be adapted to a circular laser beam and set as a centrally symmetrical or axially symmetrical shape, such as... Figures 12-15For example, the perforated area 3102 can be specifically set as a square. In other embodiments of the present invention, the perforated area 3102 can also be set as a regular hexagon, regular octagon, circle, ellipse, etc. Those skilled in the art can design it according to actual needs, and there are no limitations here. Among them, considering that the laser beam is circular, it is preferable to design the shape of the perforated area 3102 as a circle. On the one hand, it can adapt to the shape of the laser beam, and on the other hand, it can avoid the accumulation of static electricity at the corner position, which would affect the signal transmission. It can also be understood that the shape design of the notch-type perforated area 3101 can refer to the shape of the perforated area 3102. Based on the shape of the perforated area 3102, a portion of the area is cut off to form it. Taking the perforated area 3102 as a square as an example, the notch-type perforated area 3101 can be designed as a rectangle.

[0056] Continue to refer to Figures 14-15 Optionally, in the second direction X, the minimum width L of the third signal line 30 is... 3min Satisfy: L 3min ≥3μm.

[0057] The minimum linewidth of the third signal line 30 here refers to the minimum sum of the linewidths of the third signal line 30 in the row direction at a specific position in the column direction. Figure 14 and Figure 15 Taking the location of the hollowed-out area 3102 as an example, the third signal line 30 has a partial line width on both the left and right sides of the hollowed-out area 3102, and the line width on both the left and right sides is L. 3min / 2, Here, the third signal line 30 has a minimum line width L 3min At this point, even if there is a cutout area on the third signal line 30, the line width can still be guaranteed to be no less than 3μm. This not only prevents the third signal line 30 from breaking, but also ensures that the third signal line 30 has low impedance and good signal transmission quality.

[0058] Figure 16 and Figure 17 This is a top view of a partial structure of two more display panels provided in the embodiments of the present invention. Figure 18 yes Figure 16 The diagram shows a cross-sectional view of the display panel along DD'. Figure 19 yes Figure 17 The diagram shown is a cross-sectional view of the display panel along EE'. (Refer to...) Figures 16-19In another embodiment of the present invention, the display panel includes a substrate 40, a first signal line 10, a second signal line 20, and a third signal line 30; the second signal line 20 is located on the side of the first signal line 10 away from the substrate 40; along a direction perpendicular to the plane of the substrate 40, the first signal line 10 and the second signal line 20 at least partially overlap, and the overlapping portion is a first overlapping portion 21; the third signal line 30 is located on the side of the second signal line 20 away from the first signal line 10; wherein, along a direction perpendicular to the plane of the substrate 40, the third signal line 30 and the first overlapping portion 21 at least partially do not overlap.

[0059] Furthermore, the third signal line 30 includes at least two straight sections 32 and at least one winding section 33, the winding section 33 connecting two adjacent straight sections 32; along the direction perpendicular to the plane of the substrate 40, the winding section 33 does not overlap with the first overlapping section 21.

[0060] In this embodiment, the third signal line 30 is essentially configured as a winding portion 33, thereby at least partially avoiding the first overlapping portion 21 formed by the overlap of the lower first signal line 10 and the second signal line 20. This ensures that the first overlapping portion 21 does not overlap with the third signal line 30 at least partially, and the exposed portion of the first overlapping portion 21 can be laser-repaired when the first signal line 10 or the second signal line 20 is damaged or broken. It can also be understood that... Figure 16 and Figure 17 In the embodiments shown, the extension directions of the first signal line 10, the second signal line 20, and the third signal line 30 are only two examples of the present invention. In other embodiments, the extension directions of the first signal line 10, the second signal line 20, and the third signal line 30 may all be different, or two of them may be the same, or all three may be the same.

[0061] Optionally, the winding portion 33 in different third signal lines 30 is located on the same side of the connected straight portion 32 in the second direction X; wherein the straight portion 32 extends along the first direction Y, and the second direction X and the first direction Y are both parallel to the plane where the substrate 40 is located and intersect.

[0062] like Figure 16 and Figure 17 As shown, a winding portion 33 can be provided at the same position in the third signal line 30. The line width of the winding portion 33 is equal to the line width of the straight portion 32. Essentially, the third signal line 30 is partially wound to one side to avoid at least part of the first overlap portion 21 formed by the overlap of the first signal line 10 and the second signal line 20 below, while ensuring that the impedance remains unchanged. At this time, the winding portions 33 provided at the same position on each of the third signal lines 30 arranged in the row direction can be uniformly located on the left or right side.

[0063] Figure 20 and Figure 21This is a top view of a partial structure of two more display panels provided in embodiments of the present invention, with reference to... Figure 20 and Figure 21 Optionally, the winding portion 33 includes two sub-winding portions 330; in the first direction Y, the two ends of the two sub-winding portions 330 are respectively connected to two adjacent straight portions 32; the two sub-winding portions 330 are located on opposite sides of the connected straight portions 32 in the second direction X; wherein, the straight portions 32 extend along the first direction Y, and the second direction X and the first direction Y are both parallel to the plane where the substrate 40 is located and intersect.

[0064] In this embodiment, essentially two sub-winding portions 330 can be provided at the same position of the third signal line 30. This can be understood as partially splitting the third signal line 30, with the two split portions winding to the left and right sides respectively to avoid at least part of the first overlap portion 21 formed by the overlap of the first signal line 10 and the second signal line 20 below.

[0065] Alternatively, in the second direction X, the sum of the line widths L” of the two sub-winding portions 330 and the line width L’ of the straight portion 32 satisfy: L”≥L’.

[0066] At this point, the linewidth of the two sub-wound sections 330 can be set to half the linewidth of the straight section 32, that is, L”=L’. In this case, the two sub-wound sections 330 are essentially connected in parallel between the upper and lower straight sections 32, which can also ensure that the impedance remains unchanged. In addition, considering that if the linewidth of the sub-wound section 330 is set too narrow, it may easily lead to the risk of wire breakage. Based on half the linewidth of the straight section 32, the linewidth of the two sub-wound sections 330 can be appropriately increased. This avoids wire breakage and also helps to reduce impedance and ensure signal transmission quality.

[0067] Continue to refer to Figure 20 and Figure 21 Optionally, the connecting ends of the two sub-winding portions 330 connected to the same straight section 32 form an included angle A, wherein A > 90°.

[0068] At this time, the angle between the connection positions of the two sub-wound portions 330 and the same straight portion 32 is large, which can effectively separate the two sub-wound portions 330 and prevent the unseparated sub-wound portions 330 from still blocking the overlapping area of ​​the first signal line 10 and the second signal line 20 below. At the same time, it can reduce the precision requirements when etching to form the third signal line 30 and reduce the manufacturing difficulty.

[0069] Continue to refer to Figure 20 and Figure 21 Further optionally, in the second direction X, the maximum width D2 of the gap between the two sub-winding portions 330 and the line width L3 of the straight portion 32 satisfy: D2≥L3.

[0070] At this time, the two sub-winding sections 330 can ensure a sufficiently wide separation gap, thereby effectively exposing the overlapping area of ​​the first signal line 10 and the second signal line 20 below, which facilitates laser repair.

[0071] Figure 22 This is a top view of a partial structure of a display panel provided in another embodiment of the present invention, with reference to... Figure 22 In one specific embodiment, optionally, the display panel includes a plurality of pixel rows arranged along a first direction Y, and the pixel rows include a plurality of pixel units 01 arranged along a second direction X; the first direction Y and the second direction X are both parallel to the plane where the substrate 40 is located and intersect each other. A straight section 32 extends along the first direction Y and is located between two adjacent pixel units 01 in the same pixel row in the second direction X. A winding section 33 is located between two adjacent pixel units 01 in two adjacent pixel rows in the first direction Y, and between two adjacent second signal lines 20 in the second direction X.

[0072] In this context, a pixel row can be understood as a pixel structure formed by arranging multiple pixel units 01 along the second direction X, i.e., the row direction. Besides including sub-pixels 001 in each pixel unit 01, it also includes signal lines extending along the row direction and connected to the sub-pixels 001. Therefore, in this embodiment, the third signal line 30 extending along the first direction Y, i.e., the column direction, is specifically configured such that the straight section 32 is located between two adjacent pixel units 01 in the same pixel row, or overlapping with the pixel row, while the winding section 33 is located between two adjacent pixel rows. This means that the winding of the third signal line 30 is set within a sufficiently large space between the pixel rows, achieving a reasonable allocation and utilization of the display panel space.

[0073] Continue to refer to Figure 22 Alternatively, in the second direction X, the edge of the winding portion 33 is adjacent to the edge of the second signal line 20.

[0074] At this point, the winding portion 33 in the third signal line 30 can be controlled to a reasonable position on both sides, preventing the winding amplitude from being too large and occupying extra space between adjacent pixel rows. For example, for a transparent display panel with a light-transmitting area 1001 set between adjacent pixel rows, the area occupied by the winding portion 33 in the light-transmitting area 1001 can be reduced, avoiding excessive impact on the overall transmittance of the panel. At the same time, the winding portion 33 can completely avoid the second signal line 20 at this position, ensuring that at least part of the overlapping area between the second signal line 20 and the first signal line 10 is effectively exposed, facilitating subsequent laser repair.

[0075] Figure 23 and Figure 24 This is a top view of a partial structure of two more display panels provided in embodiments of the present invention, with reference to... Figure 23 and Figure 24In an optional embodiment, at least a portion of the winding portion 33 in the same third signal line 30 may be located on opposite sides of the straight portion 32 in the second direction X, such as... Figure 23 As shown; and / or, at least a portion of the winding portion 33 in the third signal line 30 is located on the first side of the connected straight portion 32 in the second direction X, and the remaining winding portions 33 in the third signal line 30 are located on the second side of the connected straight portion 32 in the second direction X. The first side and the second side are two opposite sides in the second direction X, as shown. Figure 24 As shown.

[0076] The above two arrangements of the winding portion 33 can prevent all light-shielding areas 1002 from being blocked by the winding portion 33 for transparent display panels with light-transmitting areas 1001 set between adjacent pixel rows. To a certain extent, the arrangement of the blocked light-shielding areas 1002 is disrupted. Through the optimized arrangement design, the influence of the winding portion 33 on the transmittance can be improved macroscopically.

[0077] Figure 25 This is a top view of a partial structure of two more display panels provided in embodiments of the present invention, with reference to... Figure 25 The display panel includes a display area AA and a non-display area NA. A first signal line 10, a second signal line 20, and a third signal line 30 all extend within the display area AA and the non-display area NA. A first overlapping portion 21 includes a display area overlapping portion 2101 and a non-display area overlapping portion 2102. The display area overlapping portion 2101 is located in the display area AA, and the non-display area overlapping portion 2102 is located in the non-display area NA. Along the direction perpendicular to the plane of the substrate 40, the third signal line 30 does not overlap at least partially with the display area overlapping portion 2101, and / or, the third signal line 30 does not overlap at least partially with the non-display area overlapping portion 2102.

[0078] Since the first signal line 10, the second signal line 20, and the third signal line 30 are provided with corresponding signals by the driver chip IC located in the non-display area NA, they need to extend from the non-display area NA to the display area AA. It is understandable that since most of the three signal lines extend in the display area AA, the breakage location of the first signal line 10 is highly likely to be within the display area AA. Therefore, it is necessary to find the area within the display area AA that overlaps with the second signal line 20, i.e., to determine the display area overlap portion 2101. Thus, by ensuring that at least a portion of the third signal line 30 does not overlap with this display area overlap portion 2101, laser repair can be performed at the display area overlap portion 2101 when the first signal line 10 breaks in the display area AA, compensating for the display abnormality caused by the breakage of the first signal line 10. In addition, due to the high wiring density in the non-display area NA, the requirements for line width and spacing are also high. Therefore, the first signal line 10 extending into the non-display area NA is also at risk of breakage. When the first signal line 10 in the non-display area NA breaks, the area overlapping with the second signal line 20 in the non-display area NA can be directly identified, i.e., the non-display area overlap portion 2102 can be determined. Then, by ensuring that the third signal line 30 does not overlap at least partially with this non-display area overlap portion, laser repair can be performed at the non-display area overlap portion 2102 when the first signal line 10 breaks in the non-display area NA, thus compensating for the display abnormality caused by the breakage of the first signal line 10. Since both of the above-mentioned breakage locations may exist, the overlap area of ​​the first signal line 10 and the second signal line 20 can be determined simultaneously in the display area AA and the non-display area NA, and the third signal line 30 can be designed to avoid this overlap to facilitate laser repair. Of course, those skilled in the art can also determine the overlapping area of ​​the first signal line 10 and the second signal line 20 only in the display area AA or the non-display area NA based on the actual probability of the first signal line 10 breaking in the display area AA or the non-display area NA, and design a third signal line 30 to avoid it, so as to facilitate laser repair. No restrictions are imposed here.

[0079] Continue to refer to Figure 25 Optionally, the display area AA includes a plurality of effective pixel areas 1100, and the display area overlap portion 2101 includes a plurality of display area sub-overlap portions 21010; the plurality of display area sub-overlap portions 21010 are located one-to-one within at least a portion of the effective pixel areas 1100, and the third signal line 30 does not overlap with each display area sub-overlap portion 21010 at least partially; and / or, the non-display area NA includes at least one redundant pixel area 1200, and the non-display area overlap portion 2102 includes a non-display area sub-overlap portion 21020; the non-display area sub-overlap portion 21020 is located within the redundant pixel area 1200, and the third signal line 30 does not overlap with the non-display area sub-overlap portion 21020 at least partially.

[0080] The diagram continues to illustrate the pixel areas using a grid formed by intersecting thick black dashed lines. Those skilled in the art will understand that in the actual fabrication of a display panel, redundant sub-pixels are also fabricated in the area adjacent to the display area AA in the non-display area NA. Compared to the sub-pixels in the effective pixel area 1100 of the display area AA, these redundant sub-pixels lack pixel circuitry and some organic light-emitting functional films, resulting in an incomplete structure and lack of light-emitting capability. The sub-pixels in the display area AA constitute the effective pixel area 1100, while the redundant sub-pixels in the non-display area NA constitute the redundant pixel area 1200. In this embodiment, when the first overlap 21 of the first signal line 10 and the second signal line 20 is determined for laser repair within the display area AA, multiple display area sub-overlaps 21010 can be provided in each effective pixel area 1100. However, when the first overlap 21 of the first signal line 10 and the second signal line 20 is determined for laser repair within the non-display area NA, only one non-display area sub-overlap 21020 needs to be determined within one redundant pixel area 1200. At this time, by setting the third signal line 30 to at least partially not overlap with the multiple display area sub-overlapping portions 21010 of the display area AA and the non-display area sub-overlapping portion 21020 of the non-display area NA, it can be ensured that the display area sub-overlapping portions 21010 and the non-display area sub-overlapping portions 21020 are exposed, which facilitates subsequent laser repair.

[0081] Figure 26 This is a top view of a partial structure of a display panel provided in another embodiment of the present invention, with reference to... Figure 26 Optionally, the display area overlap portion 2101 includes a plurality of display area sub-overlap portions 21010, and the third signal line 30 does not overlap with each display area sub-overlap portion 21010 at least partially; in the extension direction of the third signal line 30, the distance D3 between at least two adjacent display area sub-overlap portions 21010 near the non-display area NA is smaller than the distance D4 between at least two adjacent display area sub-overlap portions 21010 far from the non-display area NA.

[0082] Setting D3 < D4 essentially means that the further away from the non-display area NA, the larger the spacing between the two adjacent display area sub-overlapping portions 21010 exposed by the third signal line 30. In other words, the further away from the non-display area NA, the lower the density of the display area sub-overlapping portions 21010 exposed by the third signal line 30. It can be understood that creating a cutout area on the third signal line 30 to avoid the overlapping area of ​​the first signal line 10 and the second signal line 20 will, to some extent, affect the effective linewidth of the third signal line 30 and increase its signal transmission impedance. Therefore, in this embodiment of the invention, the display area sub-overlapping portion 21010 exposed by the third signal line 30 becomes sparser as the distance from the non-display area NA increases. On the one hand, this reduces the number of cutout areas on the entire third signal line 30 that need to expose the display area sub-overlapping portion 21010, thus reducing the impact on the impedance of the third signal line 30. On the other hand, since the distance from the non-display area NA is greater, the impedance accumulated on the third signal line 30 is greater. As a result, the sub-pixels connected to the third signal line 30 at positions farther from the non-display area NA are more severely affected by impedance. This arrangement can reduce the degree of impedance impact on sub-pixels connected to the third signal line 30 at positions farther from the non-display area NA to a certain extent, balancing the luminous brightness of sub-pixels that are farther and closer to the non-display area NA, thereby contributing to the display uniformity of the display panel. It should be added that, in the actual design and manufacturing process, the spacing between two adjacent display area sub-overlapping portions 21010, that is, the spacing between the first cutout areas 31 of the exposed display area sub-overlapping portions 21010 on the third signal line 30, can be achieved by spacing different numbers of pixel areas. That is, for the same first signal line 10, a smaller number of pixel areas are set between two adjacent first cutout areas 31 in the area close to the non-display area NA, while a larger number of pixel areas are set between two adjacent first cutout areas 31 in the area far from the non-display area NA.

[0083] Figure 27 This is a top view of a partial structure of a display panel provided in another embodiment of the present invention, with reference to... Figure 27In one embodiment, the first signal line 10 extends along the first direction Y; the display area AA includes a plurality of sub-pixel areas 1010 arranged along the second direction X, each sub-pixel area 1010 including a light-shielding area 1002 and a light-transmitting area 1001; each sub-pixel area 1010 includes a light-emitting element 60 located in the light-shielding area 1002; wherein the first direction Y and the second direction X are both parallel to and intersect the plane of the substrate 40. In the second direction X, a first signal line 10, a second signal line 20, and a third signal line 30 are disposed between two adjacent sub-pixel areas 1010, and the first signal line 10, the second signal line 20, and the third signal line 30 located between the same two sub-pixels 001 all satisfy the following condition: the first overlapping portion 21 formed by the third signal line 30 overlapping the first signal line 10 and the second signal line 20 does not overlap at least partially.

[0084] contrast Figure 25 and Figure 27 It can be seen that the present invention essentially provides two types of transparent display panels, wherein, in the case of... Figure 25 In the transparent display panel shown, each pixel area has a light-transmitting area 1001. Taking each pixel area as an example, which includes three sub-pixels 001 (red, green, and blue), that is, every three sub-pixels 001 will have a larger light-transmitting area 1001. Figure 27 In the transparent display panel shown, each sub-pixel area 1010 has a light-transmitting area 1001, meaning each sub-pixel 1001 corresponds to a small light-transmitting area 1001. This increases the number of light-transmitting areas 1001, helping to improve the uniformity of transparency of the display panel. Figure 27 In the transparent display panel shown, in order to drive each sub-pixel 001 to emit light, signal lines need to be set between adjacent sub-pixels 001. That is, there are three signal lines, namely the first signal line 10, the second signal line 20 and the third signal line 30, located between two adjacent sub-pixel areas 1010. At this time, at least part of the overlapping area of ​​the third signal line 30 with the first signal line 10 and the second signal line 20 can be set not to overlap, thereby exposing the first overlapping part 21 of the first signal line 10 and the second signal line 20, which facilitates laser repair of the first overlapping part 21 when the first signal line 10 is damaged or broken.

[0085] Figure 28 and Figure 29 yes Figure 25 The diagram shows two cross-sectional structures of the display panel along FF'. (Refer to...) Figure 25 , Figure 28 and Figure 29The display panel also includes a first insulating layer 51; in the direction perpendicular to the plane of the substrate 40, the first insulating layer 51 is located between the film layer containing the second signal line 20 and the film layer containing the first signal line 10. The first insulating layer 51 includes a first region A1 and a second region A2; along the direction perpendicular to the plane of the substrate 40, the portion of the first insulating layer 51 located in the first region A1 overlaps with the first overlapping portion 21 but does not overlap with the third signal line 30; the second region A2 is the region of the first insulating layer 51 other than the first region A1; the thickness H11 of the first insulating layer 51 in the first region A1 and the thickness H12 of the first insulating layer 51 in the second region A2 satisfy: 0 ≤ H11 < H12.

[0086] To avoid short circuits between the first signal line 10 and the second signal line 20 under normal conditions, an insulating layer, namely the first insulating layer 51, is typically installed between the two signal lines for electrical isolation. However, considering abnormal conditions, such as damage or breakage of the first signal line 10, laser repair is needed to fuse the second signal line 20 to the first signal line 10. To improve laser repair efficiency and ensure electrical connection between the second signal line 20 and the first signal line 10, this embodiment sets 0 < H11 < H12. Essentially, this means that the first insulating layer 51 between the two signal lines is appropriately thinned at the laser repair location to prevent the first insulating layer 51 from being too thick, which would prevent the second signal line 20 from being electrically connected to the first signal line 10 during laser repair. It can be understood that the laser repair location is the area where the first signal line 10 and the second signal line 20 overlap, exposed by a hollowed-out area or a winding portion 33 on the third signal line 30, as mentioned earlier. This corresponds to the first region A1 in the first insulating layer 51, where the thickness can be reduced to improve laser repair efficiency.

[0087] For more specific details, please refer to [link / reference]. Figure 28 and Figure 29 Optionally, the first insulating layer 51 includes a first organic insulating layer 511 and a first inorganic insulating layer 512; in the direction perpendicular to the plane of the substrate 40, the first organic insulating layer 511 and the first inorganic insulating layer 512 are located between the second signal line 20 and the first signal line 10, and the first organic insulating layer 511 is located on the side of the first inorganic insulating layer 512 away from the first signal line 10; the thickness H11' of the first organic insulating layer 511 in the first region A1 and the thickness H12' in the second region A2 satisfy: 0≤H11'<H12'.

[0088] Typically, the insulation layer between signal lines can be composed of two layers: an organic layer and an inorganic layer. In this embodiment of the invention, the first insulation layer 51 may include a first organic insulation layer 511 and a first inorganic insulation layer 512. Relatively speaking, the first organic insulation layer 511 is thicker, which can be used to flatten the surface irregularities formed by the first signal line 10, and then to prepare the second signal line 20 on a relatively flat plane. Based on this, when thinning the first insulation layer 51 in the first region A1, it is possible to mainly target the thinning or even hollowing out of the first organic insulation layer 511. Figure 28 The example in the text is to thin the first organic insulating layer 511 in the first region A1, such as... Figure 29 In the example, the first organic insulating layer 511 is hollowed out in the first region A1, and the thickness H11' of the first organic insulating layer 511 is zero when hollowed out. At this time, when the laser repair electrically connects the first signal line 10 and the second signal line 20, the thinner first inorganic insulating layer 512, together with the thinned first organic insulating layer 511, or the thinner first inorganic insulating layer 512 alone, can be easily broken down by the laser, so that the second signal line 20 melts and forms an electrical contact with the first signal line 10.

[0089] Further, optional, refer to Figure 28 and Figure 29 Optionally, the display panel further includes a second insulating layer 52; in a direction perpendicular to the plane of the substrate 40, the second insulating layer 52 is located between the second signal line 20 and the third signal line 30. The second insulating layer 52 includes a third region and a fourth region. Along a direction perpendicular to the plane of the substrate 40, the portion of the second insulating layer 52 located in the third region overlaps with the first overlapping portion 21 but does not overlap with the third signal line 30; the fourth region is the region of the second insulating layer 52 other than the third region. The thickness H23 of the second insulating layer 52 in the third region and the thickness H24 in the fourth region satisfy: 0 < H23 < H24.

[0090] Since laser repair is required to fuse the second signal line 20 to the first signal line 10 when the first signal line 10 is damaged or broken, the third signal line 30 will block the laser and affect the repair. Furthermore, the film layer on the second signal line 20 will also reduce the laser energy to some extent, affecting the laser repair. Therefore, in this embodiment of the invention, the film layer between the second signal line 20 and the third signal line 30, i.e., the second insulating layer 52, can be thinned in the laser repair area to prevent the second insulating layer 52 from being too thick, which would weaken the laser energy and prevent the second signal line 20 from being fused to the first signal line 10. It can be understood that the laser repair location is the area where the first signal line 10 and the second signal line 20 overlap, as described above, where the third signal line 30 has a hollowed-out area or a winding portion 33, corresponding to the third region in the second insulating layer 52. The thickness can be reduced in the third region to improve the laser repair efficiency.

[0091] Figure 30 yes Figure 25 The diagram shows another cross-sectional structure of the display panel along FF', for comparison. Figures 28-30 In some cases, in the region of the first overlapping portion 21 that does not overlap with the third signal line 30, along a direction perpendicular to the plane of the substrate 40, the first signal line 10 and the second signal line 20 are in electrical contact.

[0092] The display panel provided in this embodiment can be understood as a display panel that has undergone laser repair. It can be understood that after determining that the first signal line 10 is damaged or broken through tests such as lamp lighting, laser repair needs to be performed at the overlapping position of the first signal line 10 and the second signal line 20 exposed by the third signal line 30. That is, laser repair is performed in the area of ​​the first overlapping part 21 that does not overlap with the third signal line 30. At this time, some local positions of the first signal line 10 are electrically connected to the second signal line 20 through laser repair, and the first signal line 10 is laser repaired.

[0093] Continue to refer to Figure 30 More specifically, the display panel further includes a first insulating layer 51, a second insulating layer 52, and a third insulating layer 53. In a direction perpendicular to the plane of the substrate 40, the first insulating layer 51 is located between the second signal line 20 and the first signal line 10; the second insulating layer 52 is located between the second signal line 20 and the third signal line 30; and the third insulating layer 53 is located on the side of the third signal line 30 facing away from the substrate 40. The first insulating layer 51 includes a through-region 510. Along a direction perpendicular to the plane of the substrate 40, the through-region 510 is located in the area of ​​the first overlapping portion 21 that does not overlap with the third signal line 30, and the second signal line 20 makes electrical contact with the first signal line 10 through the through-region 510. Both the second insulating layer 52 and the third insulating layer 53 include a second cutout region 500. Along a direction perpendicular to the plane of the substrate 40, the second cutout region 500 is located in the area of ​​the first overlapping portion 21 that does not overlap with the third signal line 30, and the second signal line 20 makes electrical contact with the first signal line 10 within this second cutout region 500.

[0094] It can also be understood that during laser repair, the laser beam needs to pass through each film layer sequentially from top to bottom and focus on the second signal line 20. When melting the second signal line 20, not only will the first insulating layer 51 between the second signal line 20 and the first signal line 10 dissolve and evaporate, forming a penetration area 510, thus establishing an electrical connection between the second signal line 20 and the first signal line 10, but the high-energy laser beam will also dissolve and evaporate the insulating layers it passes through, that is, it will break through the second insulating layer 52 and the third insulating layer 53, causing the second insulating layer 52 and the third insulating layer 53 to also form a hollow area, namely the second hollow area 500, in this region. Conversely, by observing the electrical contact between the first signal line 10 and the second signal line 20 in the display panel, the penetration area 510 of the first insulating layer 51, and the second hollow area 500 of the second insulating layer 52 and the third insulating layer 53, it can be determined that the display panel has undergone laser repair.

[0095] Continue to refer to Figure 5 In one embodiment of the present invention, the first signal line 10, the second signal line 20, and the third signal line 30 all extend along a first direction Y and are arranged along a second direction X; the first direction Y and the second direction X are both parallel to the plane of the substrate 40 and intersect each other. The first signal line 10 includes a data signal line DATA, the second signal line 20 includes a first power supply voltage signal line PVDD, and the third signal line 30 includes a second power supply voltage signal line PVEE. The first power supply voltage signal line PVDD provides a first power supply voltage signal V. PVDD The voltage value is greater than the second power supply voltage signal V provided by the second power supply voltage signal line PVEE. PVEE The voltage value.

[0096] Figure 31 This is a cross-sectional view of a display panel according to an embodiment of the present invention. (Refer to...) Figure 31In an actual display panel, the substrate 40 includes multiple metal layers (M0, M1, MC, M2, M3, M4), a poly semiconductor layer, and insulating layers between the metal layers. These metal layers are stacked sequentially and, through appropriate layout design, can form a 7T1C pixel circuit that drives the light-emitting element 60 to emit light. Specifically, the data signal line DATA is formed in the M2 metal layer, the first power supply voltage signal line PVDD is formed in the M3 metal layer, and the second power supply voltage signal line PVEE is formed in the M4 metal layer, providing corresponding driving signals to the 7T1C pixel circuit. Therefore, in practical applications, the data signal line DATA, the first power supply voltage signal line PVDD, and the second power supply voltage signal line PVEE in the display panel are stacked vertically and extend along the column direction. Furthermore, those skilled in the art will know that because the data signal line DATA is numerous and narrow, it is prone to breakage. Therefore, the first power supply voltage signal line PVDD needs to be repaired by laser and connected to the broken data signal line DATA to compensate for the display abnormalities of the sub-pixels connected to the data signal line DATA. However, there is also the problem that the second power signal line PVEE blocks the first power voltage signal line PVDD, making laser repair impossible. Therefore, in this embodiment of the invention, the first signal line 10 can be a data signal line DATA, the second signal line 20 can be the first power voltage signal line PVDD, and the third signal line 30 can be the second power voltage signal line PVEE. When the underlying data signal line DATA is damaged or broken, by designing the second power voltage signal line PVEE to avoid the first overlapping portion 21 where the first power voltage signal line PVDD and the data signal line DATA intersect, the first power voltage signal line PVDD and the data signal line DATA can be connected at this avoided location using laser melting, achieving laser repair and enabling the data signal line DATA to receive the first power voltage signal V. PVDD This controls the sub-pixels connected to the data signal line DATA to be in a dark state, thus solving the problem of sub-pixels remaining constantly lit due to damage or breakage of the data signal line DATA.

[0097] The pixel circuit in the display panel of the above embodiment can be a 7T1C pixel circuit, or other pixel circuits. This embodiment of the invention is not limited to any particular type. For example, the display panel can also use a PAM-PWM pixel circuit. Therefore, the scheme of setting the third signal line to avoid the first overlap of the first signal line and the second signal line in this embodiment of the invention can also be applied to display panels with other pixel circuits. Any reasonable modification or application of this technical solution based on other pixel circuits should fall within the protection scope of this invention.

[0098] Specifically, Figure 32 This is a schematic diagram of another pixel circuit structure provided in an embodiment of the present invention, for reference. Figure 4 and Figure 32 In another embodiment of the present invention, the first signal line 10 and the third signal line 30 both extend along a first direction Y; the second signal line 20 extends along a second direction X; the first direction Y and the second direction X are both parallel to the plane of the substrate 40 and intersect each other. The first signal line 10 includes a data signal line DATA, the second signal line 20 includes a first level voltage signal line PWM_VDD, and the third signal line 30 includes a first power supply voltage signal line PVDD and / or a second power supply voltage signal line PVEE. The first level voltage signal line PWM_VDD provides a first level voltage signal V. PWM_VDD The voltage value, the first power supply voltage signal V provided by the first power supply voltage signal line PVDD PVDD The voltage values ​​are all greater than the second power supply voltage signal V provided by the second power supply voltage signal line PVEE. PVEE The voltage value.

[0099] As those skilled in the art will know, the 7T1C pixel circuit controls the driving current of the light-emitting element to change its brightness by writing a data signal Vdata. In contrast, the PAM-PWM pixel circuit controls the brightness of the corresponding connected light-emitting element (OLED) through both a pulse width modulation (PWM-data) and a pulse amplitude modulation (PAM-data) signal. The PAM-data signal determines the driving current of the light-emitting element, thus determining the brightness of a single emission, while the PWM-data signal determines the emission frequency. Therefore, the higher the emission frequency of the light-emitting element, the higher its brightness, resulting in a brighter, cumulative brightness for the sub-pixel.

[0100] like Figure 31 The mid-pixel circuit includes a PWM module and a PAM module, which require various signals from the outside. Therefore, it needs to be connected to various signal lines, including scan signal lines (PAM_S1, PAM_S2, PWM_S1, PWM_S2), light emission control signal lines (PWM_EM and PAM_EM), reset signal lines (PAM_REF and PWM_REF), initialization signal lines (Vinit), frequency sweep signal lines (SWEEP), first level voltage signal lines (PWM_VDD), data signal lines (PAM_DATA and PWM_DATA), and first power supply voltage signal (PVDD) and second power supply voltage signal (PVEE). Figure 33 This is a cross-sectional view of another display panel provided in an embodiment of the present invention, for reference. Figure 33Similarly, the display panel includes multiple metal layers (M0, M1, MC, M2, M3, M4), a poly semiconductor layer, and insulating layers between the metal layers on the substrate 40. These metal layers are stacked sequentially and, through appropriate layout design, can form a PAM-PWM pixel circuit that drives the light-emitting element 60 to emit light. Specifically, the first level voltage signal line PWM_VDD is formed in the M1 metal layer, the pulse amplitude modulation data signal line PAM_DATA is formed in the M2 metal layer, the first power supply voltage signal line PVDD is formed in the M3 metal layer, and the second power supply voltage signal line PVEE is formed in the M4 metal layer. Therefore, it can be understood that the first level voltage signal line PWM_VDD, the pulse amplitude modulation data signal line PAM_DATA, the first power supply voltage signal line PVDD, and the second power supply voltage signal line PVEE are stacked sequentially from bottom to top. The data signal line DATA, which provides data signals to the PAM-PWM pixel circuit, is also prone to breakage issues. Since pulse width modulation (PWM) data signals are pulse signals with varying voltage levels, while pulse amplitude modulation (PWM) data signals are fixed-potential signals, when a break occurs in the PWM data signal line PAM_DATA, it can be repaired using laser technology. This connects the PWM data signal line PAM_DATA to the first-level voltage signal line PWM_VDD, providing a fixed-potential first-level voltage signal V to the PWM data signal line PAM_DATA. PWM_VDD This allows the data signal line to provide a high-level signal to the light-emitting element 60, controlling the light-emitting element 60 to be in a dark state and avoiding abnormal light emission. If the pulse width modulation data signal line PWM_DATA is broken, it can be repaired in other ways.

[0101] For laser repair of the pulse amplitude modulation data signal line PAM_DATA and the first level voltage signal line PWM_VDD, since the first level voltage signal line PWM_VDD extends along the row direction and the pulse amplitude modulation data signal line PAM_DATA extends along the column direction, with the first level voltage signal line PWM_VDD located in the lower metal layer M1 and the pulse amplitude modulation data signal line PAM_DATA located in the upper metal layer M2, laser repair can be performed at their overlapping position. However, the first power supply voltage signal line PVDD or the second power supply voltage signal line PVEE, which extends along the column direction, is located above the pulse amplitude modulation data signal line PAM_DATA, i.e., in metal layers M3 and M4. The first power supply voltage signal line PVDD and the second power supply voltage signal line PVEE will block the overlapping position of the pulse amplitude modulation data signal line PAM_DATA and the first level voltage signal line PWM_VDD, making laser repair impossible. Based on this, in this embodiment of the invention, the first signal line 10 can be a data signal line DATA, specifically a pulse amplitude modulation data signal line PAM_DATA; the second signal line 20 can be a first level voltage signal line PWM_VDD; and the third signal line 30 can be at least one of a first power supply voltage signal line PVDD and a second power supply voltage signal line PVEE. When the underlying pulse amplitude modulation data signal line PAM_DATA is damaged or broken, by designing the first power supply voltage signal line PVDD and the second power supply voltage signal line PVEE to avoid the first overlapping portion 21 where the first level voltage signal line PWM_VDD and the pulse amplitude modulation data signal line PAM_DATA overlap, the first level voltage signal line PWM_VDD and the pulse amplitude modulation data signal line PAM_DATA can be connected at this avoided position by laser melting, thereby realizing the laser repair operation and enabling the pulse amplitude modulation data signal line PAM_DATA to receive the first level voltage signal V. PWM_VDD This controls the sub-pixels connected to the pulse amplitude modulation data signal line PAM_DATA to be in a dark state, thus solving the problem of sub-pixels remaining constantly lit due to damage or breakage of the pulse amplitude modulation data signal line PAM_DATA.

[0102] Based on the same inventive concept, embodiments of the present invention also provide a display device. Figure 34 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention, such as... Figure 34 As shown, the display device includes a display panel 1 as provided in any embodiment of the present invention. Therefore, the display device provided in the embodiments of the present invention possesses the corresponding beneficial effects of the display panel provided in the embodiments of the present invention, which will not be elaborated here. Exemplarily, the display device may be an electronic device such as a mobile phone, a smart wearable device (e.g., a smartwatch), an in-vehicle display device, a computer, a television, or an advertising screen, and the embodiments of the present invention do not limit it to this.

[0103] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that, It includes a substrate, a first signal line, a second signal line, and a third signal line; The second signal line is located on the side of the first signal line away from the substrate; along a direction perpendicular to the plane of the substrate, the first signal line and the second signal line at least partially overlap, and the overlapping portion is a first overlapping portion; The third signal line is located on the side of the second signal line away from the first signal line; wherein, along a direction perpendicular to the plane of the substrate, the third signal line does not overlap with the first overlapping portion at least partially.

2. The display panel according to claim 1, characterized in that, At least one first hollow area is provided on the third signal line; Along a direction perpendicular to the plane of the substrate, the third signal line overlaps with the second signal line, and the first overlapping portion is at least partially located within the first cutout area.

3. The display panel according to claim 2, characterized in that, Along a direction perpendicular to the plane where the substrate is located, multiple first signal lines overlap with the same second signal line and form a group of first signal lines; Multiple first signal lines in the same first signal line group extend along a first direction and are arranged along a second direction; both the first direction and the second direction are parallel to the plane of the substrate and intersect each other; Along a direction perpendicular to the plane of the substrate, at least a portion of each of the first overlapping portions formed by the overlap of multiple first signal lines in the same first signal line group with the second signal line is located within at least one first cutout area.

4. The display panel according to claim 3, characterized in that, The multiple first cutout areas set on the same third signal line are located at different positions in the first direction.

5. The display panel according to claim 4, characterized in that, The width D1 of the gap between two adjacent first hollow areas in the first direction satisfies: D1≥3μm.

6. The display panel according to claim 3, characterized in that, Multiple first signal lines in the same first signal line group include first sub-signal lines and second sub-signal lines, and the first sub-signal lines and the second sub-signal lines are adjacent in the second direction; The first cutout area includes a first sub-cutout area and a second sub-cutout area. Along a direction perpendicular to the plane where the substrate is located, the first sub-signal line and the third signal line at least partially overlap, and the overlapping portion forms a first sub-overlapping portion. The second sub-signal line and the third signal line at least partially overlap, and the overlapping portion forms a second sub-overlapping portion. In the same first signal line group, the first sub-overlapping portion is at least partially located within the first sub-cutout area, and the second sub-overlapping portion is at least partially located within the second sub-cutout area.

7. The display panel according to claim 3, characterized in that, The multiple first cutout areas on the same third signal line include multiple cutout area groups, and the number of each cutout area group is equal to the number of first signal lines in the first signal line group. Along a direction perpendicular to the plane where the substrate is located, the first overlapping portions formed by the overlap of each first signal line and the third signal line in the same first signal line group are at least partially located within each of the first hollow areas in the same hollow area group; The display panel includes multiple pixel areas, and the third signal line extends through the multiple pixel areas; Each of the first hollow areas in the hollow area group is located within the same pixel area, and each hollow area group is located within a different pixel area; or, each of the first hollow areas in the same hollow area group is located in adjacent different pixel areas, and the first hollow areas in different hollow area groups are located within different pixel areas.

8. The display panel according to claim 3, characterized in that, The width L1 of the first hollow area in the second direction satisfies: L1≥5μm.

9. The display panel according to claim 3, characterized in that, The multiple first signal lines in the same first signal line group include edge signal lines and non-edge signal lines; in the second direction, the edge signal lines are located at the edge position in the same first signal line group, and the non-edge signal lines are located at the non-edge position in the same first signal line group. The first cutout area includes a notch-type cutout area and a hole-type cutout area. The notch-type cutout area is located on the side of the third signal line, and the hole-type cutout area is located in the non-edge area of ​​the third signal line. Along a direction perpendicular to the plane where the substrate is located, the first overlapping portion formed by the intersection of the edge signal line and the third signal line is at least partially located within the notch-type hollow area, and the first overlapping portion formed by the intersection of the non-edge signal line and the third signal line is at least partially located within the hole-type hollow area.

10. The display panel according to claim 9, characterized in that, The first signal line extends along a first direction; the display panel includes a plurality of pixel areas arranged along a second direction, each pixel area including a light-shielding area and a light-transmitting area, and at least one pixel area further including a semi-transparent area; wherein the first direction and the second direction are both parallel to and intersect the plane of the substrate; the light transmittance of the light-transmitting area, the semi-transparent area, and the light-shielding area decreases sequentially; In the second direction, the third signal line is located between two adjacent pixel areas, the notch-shaped cutout area is located between the light-transmitting areas of two adjacent pixel areas, and the semi-transparent area is located between the notch-shaped cutout area and the light-transmitting area and is adjacent to the notch-shaped cutout area.

11. The display panel according to claim 9, characterized in that, The width L of the notch-shaped hollow area in the second direction 11 The width L of the perforated area in the second direction 12 Satisfy: L 12 / 2<L 11 ≤L 12 .

12. The display panel according to claim 9, characterized in that, The shape of the perforated area includes circles, ellipses, and regular polygons.

13. The display panel according to claim 3, characterized in that, In the second direction, the minimum width L of the third signal line 3min Satisfy: L 3min ≥3μm.

14. The display panel according to claim 1, characterized in that, The third signal line includes at least two straight sections and at least one wound section, wherein the wound section connects two adjacent straight sections; Along a direction perpendicular to the plane of the substrate, the winding portion does not overlap with the first overlapping portion.

15. The display panel according to claim 14, characterized in that, The winding portions in the different third signal lines are located on the same side of the connected straight portions in the second direction; The straight portion extends along a first direction, and the second direction and the first direction are both parallel to and intersect the plane where the substrate is located.

16. The display panel according to claim 14, characterized in that, The winding portion includes two sub-winding portions; in a first direction, the two ends of the two sub-winding portions are respectively connected to two adjacent straight portions; the two sub-winding portions are located on opposite sides of the connected straight portions in a second direction. The straight portion extends along the first direction, and the second direction is parallel to and intersects the plane containing the substrate, just like the first direction.

17. The display panel according to claim 16, characterized in that, The connecting ends of the two sub-winding sections connected to the same straight section form an included angle A, wherein: A > 90°.

18. The display panel according to claim 16, characterized in that, In the second direction, the maximum width D2 of the gap between the two sub-winding portions and the line width L3 of the straight portion satisfy: D2≥L3.

19. The display panel according to claim 16, characterized in that, In the second direction, the sum of the line widths L” of the two sub-wound portions and the line width L’ of the straight portion satisfy: L” ≥ L’.

20. The display panel according to claim 14, characterized in that, The display panel includes a plurality of pixel rows arranged along a first direction, and the pixel rows include a plurality of pixel units arranged along a second direction; the first direction and the second direction are both parallel to the plane of the substrate and intersect each other; The straight portion extends along the first direction and is located between two adjacent pixel units in the same pixel row in the second direction; The winding portion is located between two adjacent pixel units in two adjacent pixel rows in the first direction, and between two adjacent second signal lines in the second direction.

21. The display panel according to claim 20, characterized in that, In the second direction, the edge of the winding portion is adjacent to the edge of the second signal line.

22. The display panel according to claim 14, characterized in that, In the same third signal line, at least a portion of the winding portion and the remaining winding portion are located on opposite sides of the straight portion in the third signal line in a second direction; And / or, At least a portion of the winding portion in the third signal line is located on the first side of the connected straight portion in the second direction, and the remaining winding portions in the third signal line are located on the second side of the connected straight portion in the second direction, wherein the first side and the second side are two sides that are opposite to each other in the second direction.

23. The display panel according to claim 1, characterized in that, It includes a display area and a non-display area, and the first signal line, the second signal line and the third signal line all extend in the display area and the non-display area; The first overlapping portion includes a display area overlapping portion and a non-display area overlapping portion, wherein the display area overlapping portion is located in the display area and the non-display area overlapping portion is located in the non-display area; Along the direction perpendicular to the plane where the substrate is located, the third signal line does not overlap with the display area at least partially, and / or the third signal line does not overlap with the non-display area at least partially.

24. The display panel according to claim 23, characterized in that, The display area includes multiple effective pixel areas, and the overlapping portion of the display area includes multiple sub-overlapping portions; the multiple sub-overlapping portions are located one-to-one within at least a portion of the effective pixel areas, and the third signal line does not overlap with at least a portion of each sub-overlapping portion; and / or The non-display area includes at least one redundant pixel area, and the overlapping portion of the non-display area includes a non-display area sub-overlapping portion; the non-display area sub-overlapping portion is located within the redundant pixel area, and the third signal line does not overlap with the non-display area sub-overlapping portion at least partially.

25. The display panel according to claim 23, characterized in that, The overlapping portion of the display area includes multiple sub-overlapping portions of the display area, and the third signal line does not overlap with each of the sub-overlapping portions of the display area at least partially; In the direction of extension of the third signal line, the distance between at least two adjacent sub-overlapping portions of the display area near the non-display area is less than the distance between at least two adjacent sub-overlapping portions of the display area away from the non-display area.

26. The display panel according to claim 23, characterized in that, The first signal line extends along a first direction; the display area includes a plurality of sub-pixel areas arranged along a second direction, each sub-pixel area including a light-shielding area and a light-transmitting area; each sub-pixel area includes a light-emitting element located in the light-shielding area; wherein the first direction and the second direction are both parallel to and intersect the plane of the substrate. In the second direction, a first signal line, a second signal line, and a third signal line are provided between two adjacent sub-pixel regions, and the first signal line, the second signal line, and the third signal line located between the same two sub-pixels all satisfy the following condition: the first overlapping portion formed by the third signal line and the first signal line and the second signal line does not overlap at least partially.

27. The display panel according to claim 1, characterized in that, The display panel also includes a first insulating layer; In a direction perpendicular to the plane of the substrate, the first insulating layer is located between the film layer containing the second signal line and the film layer containing the first signal line; The first insulating layer includes a first region and a second region; along a direction perpendicular to the plane of the substrate, the portion of the first insulating layer located in the first region overlaps with the first overlapping portion but does not overlap with the third signal line; the second region is the region of the first insulating layer other than the first region; The thickness H11 of the first insulating layer in the first region and the thickness H12 in the second region satisfy: 0 ≤ H11 < H12.

28. The display panel according to claim 27, characterized in that, The first insulating layer includes a first organic insulating layer and a first inorganic insulating layer; In a direction perpendicular to the plane of the substrate, the first organic insulating layer and the first inorganic insulating layer are located between the second signal line and the first signal line, and the first organic insulating layer is located on the side of the first inorganic insulating layer away from the first signal line. The thickness H11' of the first organic insulating layer in the first region and the thickness H12' in the second region satisfy: 0 ≤ H11' < H12'.

29. The display panel according to claim 27, characterized in that, The display panel also includes a second insulating layer; In a direction perpendicular to the plane of the substrate, the second insulating layer is located between the second signal line and the third signal line; The second insulating layer includes a third region and a fourth region. Along a direction perpendicular to the plane of the substrate, the portion of the second insulating layer located in the third region overlaps with the first overlapping portion but does not overlap with the third signal line; the fourth region is the region of the second insulating layer other than the third region. The thickness H23 of the second insulating layer in the third region and the thickness H24 in the fourth region satisfy: 0 < H23 < H24.

30. The display panel according to claim 1, characterized in that, The first signal line, the second signal line, and the third signal line all extend along a first direction and are arranged along a second direction; the first direction and the second direction are both parallel to the plane where the substrate is located and intersect each other. The first signal line includes a data signal line, the second signal line includes a first power supply voltage signal line, and the third signal line includes a second power supply voltage signal line. The voltage value of the first power supply voltage signal provided by the first power supply voltage signal line is greater than the voltage value of the second power supply voltage signal provided by the second power supply voltage signal line.

31. The display panel according to claim 1, characterized in that, Both the first signal line and the third signal line extend along a first direction; the second signal line extends along a second direction; both the first direction and the second direction are parallel to the plane containing the substrate and intersect each other. The first signal line includes a data signal line, the second signal line includes a first level voltage signal line, and the third signal line includes a first power supply voltage signal line and / or a second power supply voltage signal line; The voltage values ​​of the first level voltage signal provided by the first level voltage signal line and the first power supply voltage signal provided by the first power supply voltage signal line are both greater than the voltage value of the second power supply voltage signal provided by the second power supply voltage signal line.

32. The display panel according to claim 1, characterized in that, Along a direction perpendicular to the plane of the substrate, in the region of the first overlapping portion where it does not overlap with the third signal line, the first signal line and the second signal line are in electrical contact.

33. The display panel according to claim 32, characterized in that, The display panel further includes a first insulating layer, a second insulating layer, and a third insulating layer; In a direction perpendicular to the plane of the substrate, the first insulating layer is located between the second signal line and the third signal line; the second insulating layer is located between the second signal line and the third signal line; the third insulating layer is located on the side of the third signal line facing away from the substrate. The first insulating layer includes a through region along a direction perpendicular to the plane of the substrate. The through region is located in the first overlapping portion and does not overlap with the third signal line. The second signal line makes electrical contact with the first signal line through the through region. Both the second insulating layer and the third insulating layer include a second cutout area along a direction perpendicular to the plane of the substrate. The second cutout area is located in the region of the first overlapping portion that does not overlap with the third signal line, and the second signal line is in electrical contact with the first signal line within the second cutout area.

34. A display device, characterized in that, Includes the display panel as described in any one of claims 1-33.

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