Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a display area and a non-display area surrounding the display area; in a second direction, an area of the non-display area on one side of the display area comprises a first area, a second area and a third area arranged in sequence along a first direction, the first area is provided with a first signal line, and the third area is provided with a second signal line; the display panel further comprises a substrate, a signal transmission layer arranged on one side of the substrate and used for forming the first signal line and / or the second signal line, and an insulating layer, at least part of the insulating layer is arranged on a side of the signal transmission layer away from the substrate, in the second direction, a distance between the display area and an edge of the second area to which the insulating layer extends is less than a distance between the display area and an edge of the third area to which the insulating layer extends; and the first direction intersects the second direction. This is favorable for realizing a narrow frame of the display panel.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display panel and a display device. BACKGROUND

[0002] In the display panel industry, narrow frame is considered as a design element positively related to user experience, that is, the narrower the frame, the higher the screen ratio of the display panel and the higher the visual impact under the same size. In the prior art, the frame of the display panel is relatively wide, which cannot meet the needs of users. SUMMARY

[0003] The present application provides a display panel and a display device, which are beneficial to realize narrow frame of the display panel.

[0004] In a first aspect, embodiments of the present application provide a display panel, comprising a display area and a non-display area surrounding the display area; in a second direction, a region of the non-display area located on one side of the display area comprises a first area, a second area and a third area arranged in a first direction in sequence, the first area is provided with a first signal line, and the third area is provided with a second signal line; the display panel further comprises:

[0005] a substrate;

[0006] a signal transmission layer provided on one side of the substrate, used to form the first signal line and / or the second signal line;

[0007] an insulating layer, at least part of the insulating layer is provided on a side of the signal transmission layer away from the substrate, in the second direction, a distance between the insulating layer extended from the display area to an edge of the second area and the display area is less than a distance between the insulating layer extended from the display area to an edge of the third area and the display area; wherein the first direction intersects the second direction.

[0008] Optionally, the display panel further comprises a conductive layer, the conductive layer is provided on a side of the insulating layer away from the substrate, and the conductive layer is extended from the display area to the non-display area; an edge of the insulating layer extended from the display area to the third area is located on a side of an edge of the conductive layer away from the display area;

[0009] Preferably, an edge of the insulating layer extended from the display area to the first area is located on a side of an edge of the conductive layer away from the display area;

[0010] Preferably, the conductive layer comprises a cathode layer, and the cathode layer is used to form a cathode of a light emitting device in a sub-pixel.

[0011] Preferably, in the second direction, the distance between the edge of the second area and the display area to which the insulating layer extends from the display area is less than the distance between the edge of the first area and the display area to which the insulating layer extends from the display area.

[0012] In a second aspect, embodiments of the present application further provide a display panel, comprising a display area and a non-display area surrounding the display area; in a second direction, the area of the non-display area located on one side of the display area comprises a wiring area and a second area arranged along a first direction, the display panel further comprises a signal line; the signal line is located in the wiring area and outside the second area; the display panel further comprises:

[0013] a substrate;

[0014] a signal transmission layer provided on one side of the substrate, at least part of the signal transmission layer being used to form the signal line;

[0015] an insulating layer, at least part of the insulating layer being provided on a side of the signal transmission layer away from the substrate, in the second direction, the distance between the edge of the second area and the display area to which the insulating layer extends from the display area is less than the distance between the edge of the wiring area and the display area to which the insulating layer extends from the display area; wherein the first direction intersects the second direction; the vertical projection of the edge of the wiring area to which the insulating layer extends from the display area on the substrate overlaps the vertical projection of the signal line on the substrate;

[0016] a conductive layer provided on the surface of the insulating layer away from the substrate.

[0017] Optionally, the wiring area comprises a first area and a third area, the first area, the second area and the third area are arranged along the first direction; the distance between the edge of the second area and the display area to which the insulating layer extends from the display area is less than the distance between the edge of the third area and the display area to which the insulating layer extends from the display area, and / or the distance between the edge of the second area and the display area to which the insulating layer extends from the display area is less than the distance between the edge of the first area and the display area to which the insulating layer extends from the display area.

[0018] Preferably, the conductive layer comprises a cathode layer.

[0019] In a third aspect, embodiments of the present application further provide a display device, comprising the display panel of the first aspect and the second aspect.

[0020] The technical scheme of the embodiment of the present application is that the distance between the edge of the second area and the display area, to which the insulating layer extends from the display area in the second direction, is less than the distance between the edge of the third area and the display area, to which the insulating layer extends from the display area, so that the width of the flow leveling area formed on the side of the edge of the second area away from the display area is greater than the width of the flow leveling area formed on the side of the edge of the third area away from the display area. At this time, the gap between the first signal line and the second signal line in the first direction can be used to form part of the flow leveling area, so that the width of the flow leveling area formed on the side of the edge of the third area away from the display area can be compressed, which is beneficial to realizing the narrow frame design of the display panel. At the same time, the width of the flow leveling area formed on the side of the edge of the second area away from the display area can be ensured to be relatively large, and the overflow edge of the organic encapsulating material can be monitored through the flow leveling area formed on the side of the edge of the second area away from the display area, so that the monitoring effectiveness of the overflow edge of the organic encapsulating material can be ensured, thereby the encapsulating effectiveness of the display panel can be ensured. In addition, there is no first signal line and second signal line in the second area, and when the display panel is provided with a cathode layer, the first signal line and the second signal line are prevented from short-circuiting with the cathode layer, so that the reliability of the display panel is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structural schematic diagram of a display panel is provided for the embodiment of the present application.

[0022] Figure 2 A structural schematic diagram of a display panel is provided for the embodiment of the present application. Figure 1 A partial schematic diagram of a C area of a display panel is provided.

[0023] Figure 3 A structural schematic diagram of a display panel is provided for the embodiment of the present application. Figure 2 A structural schematic diagram of a display panel is provided for the embodiment of the present application.

[0024] Figure 4 A partial schematic diagram of a display panel is provided for the embodiment of the present application.

[0025] Figure 5 A partial schematic diagram of a display panel is provided for the embodiment of the present application.

[0026] Figure 6 A partial schematic diagram of a display panel is provided for the embodiment of the present application.

[0027] Figure 7 A partial schematic diagram of a display panel is provided for the embodiment of the present application.

[0028] Figure 8 A structural schematic diagram of a display panel is provided for the embodiment of the present application.

[0029] Figure 9 A partial schematic diagram of a display panel is provided for the embodiment of the present application.

[0030] Figure 10 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0031] 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.

[0032] The display panel may include a display area and a non-display area surrounding the display area. The display panel also includes an array substrate and light-emitting units. In the display area, the light-emitting units are disposed on the array substrate to realize the display of the display panel. The display panel also includes an encapsulation layer, disposed on the side of the light-emitting units away from the array substrate, to cover the display area and extend into the non-display area, for encapsulating the light-emitting units and improving their lifespan. The encapsulation layer can be a stacked structure of inorganic encapsulation layer-organic encapsulation layer-inorganic encapsulation layer. The non-display area may have a dam, with a leveling area on the side of the dam closest to the display area. During the formation of the organic encapsulation layer, the organic encapsulation material overflows from the display area to the leveling area and is blocked by the dam to form the organic encapsulation layer. The width of the leveling area needs to be sufficiently large in the direction from the display area to the non-display area to ensure that the overflow edge of the organic encapsulation material can be monitored, thereby controlling the overflow edge position of the organic encapsulation material and preventing the organic encapsulation material from failing to flow to the dam. This prevents unevenness on the surface of the dam near the display area, which could lead to short circuits in the metal and cause exposure during Automated Optical Inspection (AOI). This also prevents organic encapsulation material from overflowing the dam and causing encapsulation failure. However, the required width of the leveling zone makes it difficult to achieve a narrow bezel design for the display panel.

[0033] In response to the above technical issues, Figure 1 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present invention. Figure 2 for Figure 1 A partial schematic diagram of area C of the provided display panel. Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure obtained by cutting the display panel along AA'. (See diagram below.) Figures 1 to 3 As shown, the display panel includes a display area AA and a non-display area NAA surrounding the display area AA; in the second direction Y, the area of ​​the non-display area NAA located on one side of the display area AA includes a first area S1, a second area S2, and a third area S3 arranged sequentially along the first direction X, the first area S1 is provided with a first signal line L1, and the third area S3 is provided with a second signal line L2; the display panel also includes:

[0034] a substrate 10;

[0035] a signal transmission layer 20 disposed on one side of the substrate 10, for forming a first signal line L1 and / or a second signal line L2;

[0036] an insulating layer 30, at least part of the insulating layer 30 is disposed on the side of the signal transmission layer 20 away from the substrate 10, along the second direction Y, the insulating layer 30 extends from the display area AA to the edge D2 of the second area S2, and the edge D3 of the insulating layer 30 extending from the display area AA to the third area S3 is close to the side of the display area AA; that is, in the second direction Y, the distance between the insulating layer 30 extending from the display area AA to the edge D2 of the second area S2 and the display area AA is less than the distance between the insulating layer 30 extending from the display area AA to the edge D3 of the third area S3 and the display area AA. Wherein, the first direction X intersects the second direction Y.

[0037] Specifically, the substrate 10 can be a flexible substrate, for example, the material of the substrate 10 can be polyimide. The substrate 10 can also be a rigid substrate, for example, the material of the substrate 10 can be glass. The substrate 10 can be provided with a driving circuit layer for forming a pixel circuit. Illustratively, the pixel circuit includes a driving transistor and a capacitor; the driving circuit layer can include a gate electrode layer, a capacitor plate layer and a first source-drain electrode layer, the gate electrode layer can be used to form the gate of the driving transistor and the first plate of the capacitor, the capacitor plate layer can be used to form the second plate of the capacitor, and the first source-drain electrode layer can be used to form the source-drain electrode of the driving transistor. Wherein, the driving transistor can be a bottom-gate transistor, of course, it can also be a top-gate transistor. The first source-drain electrode layer can also be used to form part of the signal line to transmit the driving signal to drive the pixel circuit to work. The display panel can further include a second source-drain electrode layer, a first planarization layer, a second planarization layer, a pixel definition layer and a light emitting device. The second source-drain electrode layer is disposed on the side of the first source-drain electrode layer away from the substrate 10, for forming part of the signal line to transmit the driving signal to drive the pixel circuit to work. The first planarization layer is disposed between the first source-drain electrode layer and the second source-drain electrode layer, and the second planarization layer is disposed on the side of the second source-drain electrode layer away from the substrate 10. The pixel definition layer is disposed on the side of the second planarization layer away from the substrate 10. In the display area AA, the pixel definition layer is provided with an opening for defining the position of the light emitting device.

[0038] The signal transmission layer 20 can include a first source-drain electrode layer and / or a second source-drain electrode layer for forming a first signal line L1 and / or a second signal line L2. The display panel further includes light emitting devices and pixel circuits connected to the light emitting devices, an anode of the light emitting device being connected to the pixel circuit for obtaining a driving current provided by the pixel circuit. The first signal line L1 and the second signal line L2 can extend from the non-display area NAA to the display area AA for providing a driving signal to the pixels in the display area AA. The driving signal provided by the first signal line L1 and the second signal line L2 can be the same signal or different signals. In the non-display area NAA, there is a gap between the first signal line L1 and the second signal line L2 to avoid short circuiting of the first signal line L1 and the second signal line L2. In some embodiments, the first signal line L1 can be a first power signal line connected to a cathode of the light emitting device for providing a first power signal to the cathode of the light emitting device. The second signal line L2 can be a second power signal line extending from the non-display area NAA to the display area AA and connected to a power terminal of the pixel circuit for providing a second power signal to the anode of the light emitting device.

[0039] At least part of the insulating layer 30 is disposed on a side of the signal transmission layer 20 away from the substrate 10 and extends from the display area AA to part of the non-display area NAA for insulating the signal transmission layer 20 in the display area AA. Meanwhile, the insulating layer 30 has an edge in the non-display area NAA, so that the surface of the non-display area NAA has a height difference to form a leveling area on a side of the edge of the insulating layer 30 away from the display area AA. In some embodiments, the material of the insulating layer 30 can be an organic material, and the insulating layer 30 can form the edge in the non-display area NAA after being patterned by an organic insulating layer. The display panel can further include light emitting devices and an encapsulating layer. The light emitting devices are located in the display area AA and disposed on a side of the insulating layer 30 away from the substrate 10. The encapsulating layer is disposed on a side of the light emitting devices away from the substrate 10 and extends from the display area AA to the non-display area NAA. The encapsulating layer can include an organic encapsulating layer. When the organic encapsulating layer is formed, the material of the organic encapsulating layer overflows from the display area AA to the non-display area NAA, and the overflow edge of the organic encapsulating material is monitored in the leveling area, so that the encapsulating reliability of the encapsulating layer can be ensured. At this time, the width of the leveling area along the second direction Y is greater than a certain distance, so that when the overflow edge of the organic encapsulating material is monitored, the edge of the insulating layer 30 does not affect the monitoring result.

[0040] The first area S1 is provided with the first signal line L1, which can provide a cathode power signal for the light emitting device in the display panel, for example, the voltage of the first power signal can be -7V. Exemplarily, in the first area S1, the first signal line L1 extends along the first direction X. The third area S3 is provided with the second signal line L2, which can provide a power signal for the pixel circuit in the display panel, for example, the voltage of the second power signal can be 7V. Exemplarily, in the third area S3, the second signal line L2 extends along the second direction Y. The second area S2 is free of the first signal line L1 and the second signal line L2. Exemplarily, the second area S2 can be the gap between the first signal line L1 and the second signal line L2 in the first direction X.

[0041] When the insulating layer 30 extends from the display area AA to the edge D2 of the second area S2 along the second direction Y is located on the side of the edge D3 of the third area S3 extending from the display area AA to which the display area AA is close, under the condition that the width of the other area of the non-display area NAA of the display panel along the second direction Y is certain, i.e. the distance between the edge D2 of the second area S2 extending from the display area AA to the insulating layer 30 and the display area AA is less than the distance between the edge D3 of the third area S3 extending from the display area AA to the insulating layer 30 and the display area AA, the width h2 of the leveling area formed on the side of the edge of the second area S2 away from the display area AA of the insulating layer 30 is greater than the width h3 of the leveling area formed on the side of the edge of the third area S3 away from the display area AA of the insulating layer 30, which can compress the width h3 of the additional leveling area formed on the side of the edge of the third area S3 away from the display area AA of the insulating layer 30, and is conducive to realizing the narrow frame design of the display panel. Moreover, it can ensure that the length B3 of the insulating layer 30 along the second direction Y in the third area S3 is relatively large, reduce the probability of short circuit between the second signal line L2 and the cathode layer of the display panel, and improve the reliability of the display panel. At the same time, it can ensure that the width h2 of the leveling area formed on the side of the edge of the second area S2 away from the display area AA of the insulating layer 30 is relatively large, and monitor the overflow edge of the organic encapsulating material through the leveling area formed on the side of the edge of the second area S2 away from the display area AA of the insulating layer 30, to ensure the monitoring effectiveness of the overflow edge of the organic encapsulating material, so as to ensure the encapsulation effectiveness of the display panel. Moreover, the second area S2 is free of the first signal line L1 and the second signal line L2, which avoids the short circuit between the first signal line L1 and the second signal line L2 and the cathode layer when the display panel is provided with the cathode layer, and ensures the reliability of the display panel.

[0042] The technical scheme of the embodiment is that, in the second direction Y, the distance between the edge D2 of the second area S2 and the display area AA to which the insulating layer 30 extends and the display area AA is less than the distance between the edge D3 of the third area S3 and the display area AA to which the insulating layer 30 extends and the display area AA, so that the width of the planarization area formed on the side of the edge of the second area away from the display area is greater than the width of the planarization area formed on the side of the edge of the third area away from the display area. At this time, the gap between the first signal line and the second signal line in the first direction can be used to form part of the planarization area, so that the width of the planarization area formed on the side of the edge of the third area away from the display area can be compressed, which is beneficial to realizing the narrow-frame design of the display panel. At the same time, the width of the planarization area formed on the side of the edge of the second area away from the display area can be ensured to be relatively large, and the overflow edge of the organic encapsulating material can be monitored through the planarization area formed on the side of the edge of the second area away from the display area, so that the monitoring effectiveness of the overflow edge of the organic encapsulating material can be ensured, thereby the encapsulation effectiveness of the display panel can be ensured. In addition, there is no first signal line and second signal line in the second area, and when the display panel is provided with a cathode layer, the first signal line and the second signal line are prevented from being short-circuited with the cathode layer, so that the reliability of the display panel is ensured.

[0043] With reference to Figure 2 and Figure 3 , the display panel further comprises a conductive layer 40, the conductive layer 40 is arranged on the side of the insulating layer 30 away from the substrate 10, and the conductive layer 40 extends to the non-display area NAA from the display area AA; the edge D3 of the third area S3 to which the insulating layer 30 extends from the display area AA is located on the side of the edge D4 of the conductive layer 40 away from the display area AA.

[0044] Specifically, when the edge D3 of the third area S3 to which the insulating layer 30 extends from the display area AA is located on the side of the edge D4 of the conductive layer 40 away from the display area AA, the second signal line L2 of the third area S3 and the conductive layer 40 can be insulated by the insulating layer 30, so that the probability of short-circuiting between the second signal line L2 and the conductive layer 40 can be reduced, and the reliability of the display panel is improved.

[0045] Exemplarily, in some embodiments, the distance B3 between the edge D3 of the display area AA and the edge D4 of the conductive layer 40 can be greater than or equal to a second preset distance. The second preset distance can be greater than or equal to a process error of the conductive layer, for example, an evaporation shadow. By setting the distance B3 between the edge D3 of the display area AA and the edge D4 of the conductive layer 40 to be greater than or equal to the second preset distance, the length of the insulating layer 30 between the second signal line L2 and the conductive layer 40 can be greater than or equal to the second preset distance, which can reduce the probability of short circuit between the second signal line L2 and the conductive layer 40, thereby improving the reliability of the display panel. The second preset distance can be greater than or equal to a process error of the cathode layer.

[0046] With reference to Figure 2 and Figure 3 , the edge D1 of the display area AA and the edge D4 of the conductive layer 40 are located on the side of the display area AA away from the first area S1.

[0047] Specifically, when the edge D1 of the display area AA and the edge D4 of the conductive layer 40 are located on the side of the display area AA away from the first area S1, the first signal line L1 of the first area S1 and the conductive layer 40 have the insulating layer 30 therebetween, thereby reducing the probability of short circuit between the first signal line L1 and the conductive layer 40 and improving the reliability of the display panel. When the signals of the first signal line L1 and the conductive layer 40 are the same, the phenomenon of heating caused by small-area short circuit between the first signal line L1 and the conductive layer 40 can be improved.

[0048] Exemplarily, in some embodiments, the distance B1 between the edge D1 of the display area AA and the edge D4 of the conductive layer 40 can be less than the second preset distance, which can reduce the width of the additional leveling area, thereby facilitating the realization of a narrow frame of the display panel.

[0049] In some embodiments, the conductive layer 40 includes a cathode layer, and the cathode layer is used to form a cathode of a light-emitting device in a sub-pixel; the first signal line L1 is used to provide a first power signal for the cathode layer. At this time, the signals transmitted by the first signal line L1 and the cathode layer are both the first power signal. When the length of the insulating layer 30 between the first signal line L1 and the cathode layer is less than the second preset distance, the signal transmission reliability of the display panel can be ensured when the first signal line L1 and the cathode layer are prone to short circuit due to a process error of the cathode layer in the process of manufacturing the display panel.

[0050] In some embodiments, the second signal line L2 is used to provide a second power signal for the pixel circuit. In this case, the probability of short circuit between the second power signal and the first power signal transmitted by the cathode layer can be reduced, and the signal transmission reliability of the display panel is improved.

[0051] Figure 4 A partial schematic view of a display panel is provided for embodiments of the present application. As shown in Figure 3 and Figure 4 In the second direction Y, the edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 is located on the side of the edge D1 of the insulating layer 30 extending from the display area AA to the first area S1 close to the display area AA; that is, in the second direction Y, the distance between the edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge D1 of the insulating layer 30 extending from the display area AA to the first area S1 and the display area AA.

[0052] Specifically, as shown in Figure 3 and Figure 4 The display panel can further include a conductive layer 40, which is disposed on the side of the insulating layer 30 away from the substrate 10, and the conductive layer 40 extends from the display area AA to the non-display area NAA and has an edge D4 in the non-display area NAA. In the second direction Y, the distance between the edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge D1 of the insulating layer 30 extending from the display area AA to the first area S1 and the display area AA, and the length B1 of the insulating layer 30 in the first area S1 is greater than the length B2 of the insulating layer 30 in the second area S2 along the second direction Y. When the width h3 of the leveling area formed on the side of the edge of the insulating layer 30 in the third area S3 away from the display area AA is relatively small, the length B1 of the insulating layer 30 between the first signal line L1 and the edge D4 of the conductive layer 40 in the first area S1 is relatively large, so that the phenomenon of small-area short circuit between the first signal line L1 and the conductive layer 40 caused by process errors and other reasons when forming the conductive layer 40 can be avoided, and the phenomenon of edge heating of the display panel is improved.

[0053] Continuing to refer to Figure 4 In the first direction X, the edge D1 of the insulating layer 30 extending from the display area AA to the first area S1 is located on the same straight line as the edge D3 of the insulating layer 30 extending from the display area AA to the third area S3.

[0054] Specifically, along the first direction X, the edge D1 of the first area S1 to which the insulating layer 30 extends from the display area AA and the edge D3 of the third area S3 to which the insulating layer 30 extends from the display area AA are located on the same straight line, the width h3 of the flow leveling area formed on the side of the edge of the third area S3 away from the display area AA by the insulating layer 30 and the width h1 of the flow leveling area formed on the side of the edge of the first area S1 away from the display area AA by the insulating layer 30 can be compressed synchronously, so that the length B1 of the insulating layer 30 in the first area S1 and the length B3 of the insulating layer 30 in the third area S3 can be increased simultaneously when reducing the frame width of the display panel, thereby reducing the probability of short circuit between the first signal line L1 and the second signal line L2 and the conductive layer 40 and improving the overall performance of the display panel.

[0055] In some embodiments, the edge D1 of the first area S1 to which the insulating layer 30 extends from the display area AA can also be located on the side of the edge D3 of the third area S3 to which the insulating layer 30 extends from the display area AA close to the display area AA along the second direction Y (see Figure 2 That is, along the second direction Y, the distance between the edge D1 of the first area S1 to which the insulating layer 30 extends from the display area AA and the display area AA is less than the distance between the edge D3 of the third area S3 to which the insulating layer 30 extends from the display area AA and the display area AA. In this way, the distance between the edge D1 of the first area S1 to which the insulating layer 30 extends from the display area AA and the edge of the conductive layer 40 can be less than the distance between the edge D3 of the third area S3 to which the insulating layer 30 extends from the display area AA and the edge of the conductive layer 40. At this time, the distance B3 between the edge D3 of the third area S3 to which the insulating layer 30 extends from the display area AA and the edge of the conductive layer 40 can be greater than or equal to a preset distance, thereby reducing the probability of short circuit between the conductive layer 40 and the second signal line L2 caused by process error. Meanwhile, the distance B1 between the edge D1 of the first area S1 to which the insulating layer 30 extends from the display area AA and the edge of the conductive layer 40 can be less than the preset distance, which is conducive to realizing the narrow frame design of the display panel.

[0056] Continuing to refer to Figure 3 and Figure 4 , the vertical projection of the edge D1 of the first area S1 to which the insulating layer 30 extends from the display area AA on the substrate 10 and the vertical projection of the first signal line L1 on the substrate 10 overlap.

[0057] Specifically, the vertical projection of the edge D1 of the first area S1 to which the insulating layer 30 extends from the display area AA on the substrate 10 and the vertical projection of the first signal line L1 on the substrate 10 overlap, so that the side of the first signal line L1 away from the substrate 10 is insulated from other conductive layers by the insulating layer 30, thereby reducing the probability of short circuit between the first signal line L1 and other conductive layers and ensuring the reliability of the display panel.

[0058] Continuing to refer toFigure 3 and Figure 4 The vertical projection of the edge D3 of the third area S3, to which the insulating layer 30 extends from the display area AA, on the substrate 10 overlaps the vertical projection of the second signal line L2 on the substrate 10.

[0059] Specifically, the vertical projection of the edge D3 of the third area S3, to which the insulating layer 30 extends from the display area AA, on the substrate 10 overlaps the vertical projection of the second signal line L2 on the substrate 10, which can insulate the second signal line L2 from other conductive layers on the side of the substrate 10, reduce the probability of short circuit between the second signal line L2 and other conductive layers, and ensure the reliability of the display panel.

[0060] With reference to Figure 3 and Figure 4 The display panel further comprises a conductive layer 40, the conductive layer 40 is disposed on the side of the insulating layer 30 away from the substrate 10, and the conductive layer 40 extends from the display area AA to the non-display area NAA; the edge D3 of the third area S3, to which the insulating layer 30 extends from the display area AA, is located on the side of the edge D4 of the conductive layer 40 away from the display area AA.

[0061] Specifically, the vertical projection of the edge D3 of the third area S3, to which the insulating layer 30 extends from the display area AA, on the substrate 10 overlaps the vertical projection of the second signal line L2 on the substrate 10, which can insulate the second signal line L2 from other conductive layers on the side of the substrate 10, reduce the probability of short circuit between the second signal line L2 and other conductive layers, and ensure the reliability of the display panel. Figure 2 and Figure 3 Specifically, the vertical projection of the edge D3 of the third area S3, to which the insulating layer 30 extends from the display area AA, on the substrate 10 overlaps the vertical projection of the second signal line L2 on the substrate 10, which can insulate the second signal line L2 from other conductive layers on the side of the substrate 10, reduce the probability of short circuit between the second signal line L2 and other conductive layers, and ensure the reliability of the display panel.

[0062] Similarly, when the edge D1 of the insulating layer 30 extending from the display area AA to the first area S1 is located on the side of the edge D4 of the conductive layer 40 away from the display area AA, the first signal line L1 of the first area S1 and the conductive layer 40 can be insulated by the insulating layer 30, so as to reduce the probability of short circuit between the first signal line L1 and the conductive layer 40, and improve the reliability of the display panel. When the signals of the first signal line L1 and the conductive layer 40 are the same, the heating phenomenon caused by small-area short circuit between the first signal line L1 and the conductive layer 40 can be improved.

[0063] In some embodiments, the conductive layer 40 includes a cathode layer for forming a cathode of a light-emitting device in a sub-pixel; the first signal line L1 is configured to provide a first power signal for the cathode layer. The second signal line L2 is configured to provide a second power signal for a pixel circuit.

[0064] With reference to Figure 2 and Figure 3 , the display panel further includes a dam 50 disposed in the non-display area NAA, the dam 50 surrounds the display area AA, and the dam 50 sequentially passes through the first area S1, the second area S2 and the third area S3. The edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 is located on the side of the dam 50 close to the display area AA and is spaced apart from the dam 50.

[0065] Specifically, as shown in Figure 2 and Figure 3 , when the insulating layer 30 extends from the display area AA to the non-display area NAA, the edge of the insulating layer 30 has a height difference to form a blocking structure on the side of the display area AA close to the leveling area. The edge of the insulating layer 30 is spaced apart from the dam 50, so that the spacing area between the edge of the insulating layer 30 and the dam 50 constitutes the leveling area, and the dam 50 serves as the blocking structure on the side of the display area AA away from the leveling area. The dam 50 sequentially passes through the first area S1, the second area S2 and the third area S3, so that the dam 50 can serve as the blocking structure on the side of the display area AA away from the leveling area for the first area S1, the second area S2 and the third area S3 respectively. The dam 50 can be a single-layer structure or a stacked structure. Taking the dam 50 as a stacked structure as an example, the dam 50 can include a part of the second planarization layer and a part of the pixel definition layer, and the part of the second planarization layer and the part of the pixel definition layer are stacked.

[0066] In some embodiments, the edge of the insulating layer 30 extending from the display area AA to the first area S1, the second area S2 and the third area S3 is located on the side of the dam 50 close to the display area AA; along the second direction Y, the space between the dam 50 and the insulating layer 30 constitutes the leveling area; and the width h2 of the leveling area in the second area S2 is greater than the width h3 of the leveling area in the third area S3.

[0067] Specifically, when the dam 50 is a blocking structure far away from the display area AA as a flow leveling area, the width of the flow leveling area along the second direction Y is the distance between the edge of the insulating layer 30 and the edge of the dam 40 close to the display area AA. When the distance from the edge of the dam 50 close to the display area AA to the edge of the display area AA is equal in different areas, the distance from the edge of the insulating layer 30 to the display area AA in different areas can be set to be different, i.e., the length of the insulating layer 30 along the second direction Y in different areas is different, so that the width of the flow leveling area in different areas can be adjusted. By setting the width h2 of the flow leveling area in the second area S2 to be greater than the width h3 of the flow leveling area in the third area S3, the width of the flow leveling area in the second area S2 satisfies the monitoring effectiveness of the overflow edge of the organic encapsulation material. Moreover, the second area S2 is free of the first signal line L1 and the second signal line L2, avoiding the phenomenon that the length B2 of the insulating layer 30 in the second area S2 is relatively short, causing the first signal line L1 and the second signal line L2 to be short-circuited with the cathode layer. At the same time, the width of the flow leveling area in the third area S3 is relatively small, so that the width occupied by the flow leveling area along the second direction Y can be compressed, thereby being beneficial to realizing a narrow frame of the display panel. Moreover, the length B3 of the insulating layer 30 in the third area S3 can be relatively long, reducing the probability of short-circuiting of the second signal line L2 with the cathode layer of the display panel, and improving the reliability of the display panel.

[0068] In some embodiments, with reference to Figure 2 and Figure 4 , the dam 50 includes a part of the insulating layer, and the insulating layer 30 is provided with a first opening M, the first opening M is located between the dam 50 and the display area AA, and the first opening M is a flow leveling area; a vertical projection of the first opening M on the substrate 10 overlaps the vertical projections of the first area S1, the second area S2 and the third area S3 on the substrate 10; in the second direction Y, the edge of the first opening M close to the display area AA is located in the part of the first area S1, the second area S2 and the third area S3, respectively, which is the edge of the insulating layer 30 extending from the display area AA to the first area S1, the second area S2 and the third area S3.

[0069] Specifically, with reference to Figure 2 , the part of the first opening M close to the display area AA in the first area S1 is the edge D1 of the insulating layer 30 extending from the display area AA to the first area S1, the part of the first opening M close to the display area AA in the second area S2 is the edge D2 of the insulating layer 30 extending from the display area AA to the second area S2, and the part of the first opening M close to the display area AA in the third area S3 is the edge D3 of the insulating layer 30 extending from the display area AA to the third area S3.

[0070] For example, Figure 2As shown, when the distances from the edges of the dam 50 to the edges of the display area AA are equal in different regions, the sum of the distance h1 between the edge of the insulating layer 30 in the first region S1 and the dam 50 and the length B1 of the insulating layer 30 in the first region S1 along the second direction Y, the sum of the distance h2 between the edge of the insulating layer 30 in the second region S2 and the dam 50 and the length B2 of the insulating layer 30 in the second region S2 along the second direction Y, and the sum of the distance h3 between the edge of the insulating layer 30 in the third region S3 and the dam 50 and the length B3 of the insulating layer 30 in the third region S3 along the second direction Y are all equal. By setting the length B2 of the insulating layer 30 in the second region S2 along the second direction Y to be less than the length B3 of the insulating layer 30 in the third region S3 along the second direction Y, the distance h2 between the edge of the insulating layer 30 in the second region S2 and the dam 50 can be made to be greater than the distance h3 between the edge of the insulating layer 30 in the third region S3 and the dam 50, so that the width of the leveling area in the second region S2 is greater than the width of the leveling area in the third region S3.

[0071] In some embodiments, along the second direction Y, the width h2 of the leveling area in the second region S2 is greater than or equal to a first preset distance.

[0072] Specifically, the material of the insulating layer 30 can be an organic material, and the edge of the insulating layer 30 can serve as a blocking structure of the leveling area close to the display area AA. By setting the width h2 of the leveling area in the second region S2 to be greater than or equal to the first preset distance, the edge of the organic material of the insulating layer 30 can be prevented from interfering with the monitoring of the overflow edge of the organic encapsulating material when the overflow edge of the organic encapsulating material is monitored, thereby ensuring the monitoring reliability of the overflow edge of the organic encapsulating material. The first preset distance can be set according to the monitoring requirements of the overflow edge of the organic encapsulating material, which is not limited herein.

[0073] In some embodiments, along the second direction Y, the width h3 of the leveling area in the third region S3 is less than the first preset distance.

[0074] Specifically, the width h2 of the leveling area in the second region S2 is the sum of the width h3 of the leveling area in the third region S3 and the length difference of the insulating layer 30 between the second region S2 and the third region S3. When the width h2 of the leveling area in the second region S2 is greater than or equal to the first preset distance, the width h3 of the leveling area in the third region S3 can also be set to be less than the first preset distance, so that the width h2 of the leveling area in the second region S2 makes more use of the gap between the first signal line L1 and the second signal line L2 along the first direction X, thereby further reducing the width of the additionally provided leveling area, which is conducive to further achieving a narrow frame of the display panel.

[0075] It should be noted that, Figure 2 and Figure 3It is only an example. In some embodiments, the dam 50 can also be provided with a partial insulating layer, and the insulating layer 30 is provided with a first opening M, the first opening M is located between the dam 50 and the display area AA, and the first opening M is a leveling area; the vertical projection of the first opening M on the substrate 10 overlaps the vertical projection of the second area S2 on the substrate 10; the vertical projection of the first opening M on the substrate 10 is spaced apart from the vertical projection of the third area S3 on the substrate 10; and / or, the vertical projection of the first opening M on the substrate 10 is spaced apart from the vertical projection of the first area S1 on the substrate 10.

[0076] Specifically, Figure 5 Another partial schematic view of a display panel is provided for embodiments of the present application. As shown in Figure 5 The vertical projection of the first opening M on the substrate 10 overlaps the vertical projection of the second area S2 on the substrate 10, and the width of the leveling area in the second direction Y is the width of the leveling area in the second area S2. The vertical projection of the first opening M on the substrate 10 is spaced apart from the vertical projection of the third area S3 on the substrate 10 along the first direction X, so that the width h1 of the leveling area in the first area S1 is equal to zero. The vertical projection of the first opening M on the substrate 10 is spaced apart from the vertical projection of the first area S1 on the substrate 10 along the first direction X, so that the width h3 of the leveling area in the third area S3 is equal to zero. When the width h1 of the leveling area in the first area S1 and / or the width h3 of the leveling area in the third area S3 is equal to zero, the width h2 of the leveling area in the second area S2 is equal to the width of the gap between the first signal line L1 and the second signal line L2. No additional leveling area is needed, further realizing a narrow frame of the display panel, and at the same time, the overflow edge of the organic encapsulating material in the leveling area in the second area S2 can be monitored to ensure the monitoring effectiveness of the overflow edge of the organic encapsulating material, thereby ensuring the encapsulation effectiveness of the display panel.

[0077] In some embodiments, the material of the dam 50 includes an organic material. In the manufacturing process of the display panel, an organic material layer can be formed on the signal transmission layer 20, and then the organic material layer is patterned to form the dam 50.

[0078] Continuing to refer to Figure 4 The width h2 of the leveling area in the second area S2 is greater than the width h1 of the leveling area in the first area S1.

[0079] Specifically, the distance from the edge of the dam 50 near the edge of the display area AA to the edge of the display area AA is equal in different regions. When the width h2 of the leveling area in the second region S2 is greater than the width h1 of the leveling area in the first region S1, the length B1 of the insulating layer 30 in the first region S1 is greater than the length B2 of the insulating layer 30 in the second region S2. This allows the width h2 of the leveling area in the second region S2 to be relatively large, ensuring the effectiveness of monitoring the overflow edge of the organic encapsulation material. At the same time, the relatively large length B1 of the insulating layer 30 in the first region S1 reduces the phenomenon of small-area short circuits between the first signal line L1 and the conductive layer 40, and improves the phenomenon of overheating at the edge of the display panel.

[0080] Preferably, along the second direction Y, the width h1 of the leveling zone in the first zone S1 is less than the first preset distance.

[0081] Specifically, when the leveling area of ​​the second zone S2 reuses the gap between the first signal line L1 and the second signal line L2, the width h1 of the leveling area in the first zone S1 can be set to be less than the first preset distance. While ensuring that the width h2 of the leveling area in the second zone S2 is greater than or equal to the first preset distance, the width of the additional leveling area is reduced, which is beneficial to achieving a narrow bezel of the display panel.

[0082] Figure 6 A partial schematic diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 6 As shown, the dam 50 includes a first dam 51 and a second dam 52. The second dam 52 is located on the side of the first dam 51 away from the display area AA. The first dam 51 passes through the first area S1, the second area S2 and the third area S3 in sequence. The leveling area is located between the first dam 51 and the insulation layer 30.

[0083] Specifically, such as Figure 6 As shown, both the first dam 51 and the second dam 52 are arranged around the display area AA. A leveling area is positioned between the first dam 51 and the insulating layer 30, and the width h2 of the leveling area in the second area S2 is greater than the width h3 of the leveling area in the third area S3. This allows the leveling area in the second area S2 to reuse the gap between the first signal line L1 and the second signal line L2, ensuring that the width h2 of the leveling area in the second area S2 is sufficiently large. Simultaneously, it reduces the width h3 of the additional leveling area in the third area S3, which is beneficial for achieving a narrow bezel design for the display panel.

[0084] Continue to refer to Figure 6 A protective zone is provided between the second dam 52 and the first dam 51; the width of the protective zone along the second direction Y is less than the width h2 of the leveling zone in the second zone S2. By providing this protective zone, the possibility of organic encapsulation material overflowing outside the second dam 52 can be further reduced. In some embodiments, the width of the protective zone along the second direction Y is less than a first preset distance.

[0085] In some embodiments, referring to Figure 3 The display panel further comprises an organic encapsulation layer 60, and the first dam 51 surrounds the organic encapsulation layer 60.

[0086] Specifically, the organic encapsulation layer 60 is used to encapsulate the display area of the display panel, and improve the service life of the display panel. The first dam 51 is arranged around the organic encapsulation layer 60, which can block the overflow phenomenon of the organic material of the organic encapsulation layer 60 when the organic encapsulation layer 60 is formed, and ensure the encapsulation effect of the organic encapsulation layer 60.

[0087] In some embodiments, the second dam 52 sequentially passes through the first area S1, the second area S2 and the third area S3; in the first area S1, the gap between the first dam 51 and the second dam 52 is provided with the continuously arranged insulating layer 30; and / or, in the third area S3, the gap between the first dam 51 and the second dam 52 is provided with the continuously arranged insulating layer 30. Taking the example that the first dam 51 and the second dam 52 are both laminated by the part of the second planarization layer and the part of the pixel definition layer, the gap between the first dam 51 and the second dam 52 is provided with the continuously arranged insulating layer 30, which means that the gap between the first dam 51 and the second dam 52 is provided with the continuously arranged second planarization layer.

[0088] Specifically, in some embodiments, in the third area S3, the insulating layer 30 can be continuously arranged between the first dam 51 and the second dam 52, at this time, the organic encapsulation material can be monitored through the leveling area of the second area S2, and at the same time, the width between the first dam 51 and the second dam 52 can be compressed, which is beneficial to further compress the frame of the display panel. Similarly, in the first area S1, the insulating layer 30 can be continuously arranged between the first dam 51 and the second dam 52, at this time, the organic encapsulation material can be monitored through the leveling area of the second area S2, and at the same time, the width between the first dam 51 and the second dam 52 can be compressed, which is beneficial to further compress the frame of the display panel.

[0089] In some embodiments, in the third area S3, the distance between the first dam 51 and the second dam 52 along the second direction Y can be set to zero, which can further compress the frame of the display panel. In the first area S1, the distance between the first dam 51 and the second dam 52 along the second direction Y can also be set to zero, which can further compress the frame of the display panel.

[0090] In some embodiments, the first dam 51 and the second dam 52 comprise part of the insulating layer 30. At this time, the insulating layer 30 can be extended to the second dam 52 through the first opening M, used to form part of the first dam 51 and the second dam 52, and continuously arranged between the first dam 51 and the second dam 52, which is beneficial to compress the frame of the display panel according to the requirement.

[0091] Figure 7 A partial schematic diagram of another display panel provided in an embodiment of the present invention, as shown below. Figure 7 As shown, the width h2 of the leveling area in the second area S2 is greater than the width h1 of the leveling area in the first area S1.

[0092] Specifically, with Figure 6 The difference is that, in Figure 7 In this design, the width h2 of the leveling area in the second region S2 is greater than the width h1 of the leveling area in the first region S1. This allows for a larger width h2 in the second region S2, ensuring the effectiveness of monitoring the overflow edge of the organic encapsulation material. Simultaneously, the length B1 of the insulating layer 30 in the first region S1 is relatively large, reducing the possibility of small-area short circuits between the first signal line L1 and the conductive layer 40, and mitigating the overheating issue at the edges of the display panel.

[0093] Continue to refer to Figure 7 When the width h2 of the leveling area in the second area S2 is greater than the width h1 of the leveling area in the first area S1, the width h2 of the leveling area in the second area S2 can be set to be greater than or equal to the first preset distance.

[0094] Based on the above technical solutions, we will continue to refer to Figure 2 , Figures 4 to 7 The vertical projection of the second region S2 on the substrate 10 is spaced apart from the vertical projection of the second signal line L2 on the substrate 10, and the vertical projection of the second region S2 on the substrate 10 is spaced apart from the vertical projection of the first signal line L1 on the substrate 10.

[0095] Specifically, the vertical projection of the second region S2 on the substrate 10 is spaced apart from the vertical projection of the second signal line L2 on the substrate 10. When the length B2 of the insulating layer 30 along the second direction Y in the second region S2 is relatively short, short-circuiting between the second signal line L2 and the cathode layer due to the short length of the insulating layer 30 can be avoided, thus improving the reliability of the display panel. Similarly, the vertical projection of the second region S2 on the substrate 10 is spaced apart from the vertical projection of the first signal line L1 on the substrate 10. When the length B2 of the insulating layer 30 along the second direction Y in the second region S2 is relatively short, short-circuiting between the first signal line L1 and the cathode layer due to the short length of the insulating layer 30 can be avoided, thus improving the edge heating phenomenon of the display panel.

[0096] In some embodiments, the signals transmitted by the first signal line L1 and the second signal line L2 may be the same or different.

[0097] Specifically, the first signal line L1 and the second signal line L2 can be different signal lines that transmit the same signal or different signal lines. By setting a gap between the first signal line L1 and the second signal line L2, the first signal line L1 and the second signal line L2 can be prevented from being open-circuited.

[0098] In some embodiments, the non-display area includes a binding area; along the second direction, the first area, the second area and the third area are arranged between the binding area and the display area.

[0099] Specifically, the binding area is provided with a binding terminal, and the display panel can further include a driving chip, an output pin of the driving chip can be connected with the signal line of the non-display area through the binding terminal, and used for providing a driving signal for the display panel. Along the second direction, the first area, the second area and the third area are arranged between the binding area and the display area, so that the first area, the second area and the third area are arranged in the lower frame of the display panel, thereby the lower frame of the display panel can be narrowed, and the visualization of the display panel is further improved.

[0100] On the basis of the above technical solutions, the non-display area includes two first areas and two second areas; the two first areas are symmetrically arranged about the third area, and the two second areas are symmetrically arranged about the third area.

[0101] Specifically, the first signal line and the second signal line can be symmetrically arranged about the middle line of the display panel extending in the second direction in the non-display area. At this time, the middle line of the third area can be located on the same straight line as the middle line of the display panel extending in the second direction, and the third area is symmetrically arranged about the middle line of the display panel extending in the second direction. Along the first direction, the middle line of the display panel extending in the second direction can include the first area and the second area on both sides respectively, the two first areas are symmetrically arranged about the third area, and the two second areas are symmetrically arranged about the third area. When setting the edges of the insulating layer, the edges of the insulating layer of the same area on both sides can be simultaneously arranged on the same straight line along the first direction, so that the distance between the edge of the insulating layer extending from the display area to the second area on both sides and the display area is less than the distance between the edge of the insulating layer extending from the display area to the third area on both sides and the display area, thereby realizing the narrow frame of the display panel.

[0102] On the basis of the above technical solutions, with reference to Figure 3 , the signal transmission layer 20 includes a first signal transmission layer 21, and the insulating layer 30 includes a first insulating layer 31, the first insulating layer 31 is arranged on the side of the first signal transmission layer 21 away from the substrate 110; the first signal transmission layer 21 is used for forming the first signal line L1 and the second signal line L2; the edge of the first insulating layer 31 extending from the display area AA to the second area S2 is located on the side of the edge of the first insulating layer 31 extending from the display area AA to the third area S3 close to the display area AA, that is, the distance between the edge of the first insulating layer 31 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge of the first insulating layer 31 extending from the display area AA to the third area S3 and the display area AA.

[0103] Specifically, the signal transmission layer 20 may only include a first signal transmission layer 21 for forming the first signal line L1 and the second signal line L2. For example, a driving circuit layer may be disposed on the substrate 10 for forming the pixel circuit. In this case, the first signal transmission layer 21 may be a first source / drain electrode layer, and the first insulating layer 31 may include at least one of the first planarization layer, the second planarization layer, and the pixel definition layer described above. The pixel definition layer is disposed on the side of the driving circuit layer away from the substrate 10. In the display area AA, an opening is provided on the pixel definition layer to define the position of the light-emitting device. Figure 3 The example shows the first insulating layer 31 as a first planarization layer. In this case, the edge of the first insulating layer 31 can serve as a blocking structure for the leveling area near the display area AA, thereby adjusting the length of the insulating layer between the first signal transmission layer 21 and the conductive layer 40, as well as the width of the leveling area, according to the edge position of the first insulating layer 31.

[0104] In other embodiments, the first signal transmission layer 21 may be the second source / drain electrode layer described above, and the first insulating layer 31 may include at least one of the second planarization layer and the pixel definition layer described above.

[0105] It should be noted that the dam 50 can be disposed in the same layer as the first insulating layer 31 to ensure the flatness of the leveling area. For example, the material of the dam 50 can be the same as the material of the first insulating layer 31, and the dam 50 can be formed simultaneously when the first insulating layer 31 is formed.

[0106] Figure 8 This is a cross-sectional structural diagram of a display panel provided in another embodiment of the present invention. Figure 8 As shown, the signal transmission layer 20 includes a first signal transmission layer 21 and a second signal transmission layer 11, and the insulating layer 30 includes a first insulating layer 31 and a second insulating layer 32. The first insulating layer 31 is disposed on the side of the first signal transmission layer 21 facing away from the substrate 10, and the second signal transmission layer 22 is disposed on the side of the first insulating layer 31 facing away from the substrate 10. The edge of the first insulating layer 31 is located on the side of the edge of the second insulating layer 32 close to the display area AA. In the second direction Y, the first signal transmission layer 21 and the second signal transmission layer 22 extend beyond the edge of the first insulating layer 31, and the portion of the first signal transmission layer 21 extending beyond the first insulating layer 31 overlaps with the portion of the second signal transmission layer 21 extending beyond the first insulating layer 31. The distance between the edge of the second insulating layer 32 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge of the second insulating layer 32 extending from the display area AA to the third area S3 and the display area AA.

[0107] Specifically, the display panel can include multiple metal layers for forming driving circuits and signal lines. The first signal transmission layer 21 can be a first source-drain electrode layer on the substrate 10. The second signal transmission layer 22 can be a second source-drain electrode layer on the substrate 10. When the part of the first signal transmission layer 21 extending out of the first insulating layer 31 overlaps with the part of the second signal transmission layer 21 extending out of the first insulating layer 31, the first signal transmission layer 21 and the second signal transmission layer 22 can simultaneously form the first signal line L1 and the second signal line L2 to ensure the reliability of the first signal line L1 and the second signal line L2. The second insulating layer 32 is arranged on the side of the second signal transmission layer 22 away from the substrate 10 to insulate the second signal transmission layer 22 from the conductive layer on the side away from the substrate 10. For example, the second insulating layer 32 can be used to insulate the second signal transmission layer 22 from the conductive layer 40. By arranging the second insulating layer 32, the distance between the edge of the second insulating layer 32 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge of the second insulating layer 32 extending from the display area AA to the third area S3, which is not only conducive to realizing the narrow-frame design of the display panel, but also ensures the monitoring reliability of the leveling area and the packaging effectiveness of the display panel.

[0108] In some embodiments, the first signal transmission layer is a first source-drain electrode layer, the second signal transmission layer is a second source-drain electrode layer, the first insulating layer is a first planarization layer, and the second insulating layer includes at least one of a second planarization layer and a pixel definition layer.

[0109] Specifically, Figure 8 In some embodiments, the second signal transmission layer 22 is a second source-drain electrode layer, and the second insulating layer 32 is a second planarization layer, as shown in the middle of the figure. In other embodiments, the second insulating layer can also include a pixel definition layer, which is not limited here.

[0110] In some embodiments, the display panel further includes an anode layer, at least part of the anode layer is exposed in the opening to form an anode of a light-emitting device.

[0111] It should be noted that when the edge of the second insulating layer 32 is used as a blocking structure of the leveling area close to the display area AA, the first insulating layer 31 can be removed at the edge of the leveling area. At the same time, the dam 50 can be arranged in the same layer as the second insulating layer 32 to ensure the flatness of the leveling area. For example, the material of the dam 50 can be the same as that of the second insulating layer 32, and the dam 50 can be formed synchronously when the second insulating layer 32 is formed.

[0112] In some embodiments, the distance between the edge of the first insulating layer 31 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge of the second insulating layer 32 extending from the display area AA to the first area S1 and the display area AA.

[0113] Specifically, Figure 8 As shown in the second embodiment, when the edge of the second insulating layer 32 extending from the display area AA to the second area S2 is located on the side of the edge of the second insulating layer 32 extending from the display area AA to the first area S1 close to the display area AA, i.e., the distance between the edge of the second insulating layer 32 extending from the display area AA to the second area S2 and the display area AA is smaller than the distance between the edge of the second insulating layer 32 extending from the display area AA to the first area S1 and the display area AA, the length of the second insulating layer 32 in the first area S1 is greater than the length of the second insulating layer 32 in the second area S2 in the second direction Y. When the width of the planarization area formed on the side of the edge of the second insulating layer 32 in the third area S3 away from the display area AA is relatively small, the length of the second insulating layer 32 between the first signal line L1 and the edge D4 of the conductive layer 40 in the first area S1 is relatively large, so that the small-area short circuit between the first signal line L1 and the conductive layer 40 caused by process errors and the like during the formation of the conductive layer 40 can be avoided, and the burning phenomenon of the display panel edge is improved.

[0114] It should be noted that in other embodiments, the edge of the first insulating layer 31 extending from the display area AA to the second area S2 can also be located on the side of the edge of the first insulating layer 31 extending from the display area AA to the first area S1 close to the display area AA, i.e., the distance between the edge of the first insulating layer 31 extending from the display area AA to the second area S2 and the display area AA is smaller than the distance between the edge of the first insulating layer 31 extending from the display area AA to the first area S1 and the display area AA. Alternatively, the distance between the edge of the first insulating layer 31 extending from the display area AA to the second area S2 and the display area AA can be smaller than the distance between the edge of the first insulating layer 31 extending from the display area AA to the first area S1 and the display area AA, and the distance between the edge of the second insulating layer 32 extending from the display area AA to the second area S2 and the display area AA can be smaller than the distance between the edge of the second insulating layer 32 extending from the display area AA to the first area S1 and the display area AA, which is not limited herein.

[0115] In some embodiments, the edge of the first insulating layer 31 is located on the side of the edge of the second insulating layer 32 close to the display area AA.

[0116] Specifically, as Figure 8As shown, the edge of the first insulating layer 31 is located on the side of the edge of the second insulating layer 32 closer to the display area AA. In the area covered by the first insulating layer 31, such as the area near the display area AA within the bend of the non-display area NAA, the first signal transmission layer 21 and the second signal transmission layer 22 can be insulated from each other. In the area not covered by the first insulating layer 31, such as the area away from the display area AA within the bend of the non-display area NAA, the first signal transmission layer 21 and the second signal transmission layer 22 can be connected in parallel. It should be noted that the "parallel connection structure" refers to: the first signal line in the first signal transmission layer 21 is connected in parallel with the first signal line in the second signal transmission layer 22; the second signal line in the first signal transmission layer 21 is connected in parallel with the second signal line in the second signal transmission layer 22. By setting the first signal transmission layer 21 and the second signal transmission layer 22 to form different signal transmission lines, the reliability of signal transmission of the signal transmission lines can be guaranteed.

[0117] In some embodiments, the first signal transmission layer 21 includes a first lower layer, a first middle layer, and a first upper layer stacked together, wherein the first lower layer, the first middle layer, and the first upper layer are conductive layers. In some embodiments, the material of the first lower layer and the first upper layer is titanium; the material of the first middle layer is aluminum.

[0118] Specifically, the structure of the first signal transmission layer 21 can be a titanium / aluminum / titanium structure.

[0119] In some embodiments, the second signal transmission layer 22 includes a second lower layer, a second middle layer, and a second upper layer stacked together, wherein the second lower layer, the second middle layer, and the second upper layer are conductive layers. In some embodiments, the material of the second lower layer and the second upper layer is titanium; the material of the second middle layer is aluminum; specifically, the structure of the second signal transmission layer 22 can be a titanium / aluminum / titanium structure.

[0120] This invention also provides a display panel. Figure 9 This is a partial schematic diagram of another display panel provided in an embodiment of the present invention. Figure 3 and Figure 9 As shown, the display panel includes a display area AA and a non-display area NAA surrounding the display area AA; in the second direction Y, the area of ​​the non-display area NAA located on one side of the display area AA includes a trace area S and a second area S2 arranged along the first direction X; the display panel also includes a signal line L; the signal line L is located within the trace area S and outside the second area S2; the display panel also includes:

[0121] Substrate 10;

[0122] A signal transmission layer 20 is disposed on one side of the substrate 10, and at least a portion of the signal transmission layer 20 is used to form a signal line L;

[0123] The insulating layer 30 is arranged on the side of the signal transmission layer 20 away from the substrate 10, and extends from the display area AA to the edge D2 of the second area S2 in the second direction Y. The distance between the edge D2 of the second area S2 and the display area AA is less than the distance between the edge D of the signal transmission layer 20 away from the display area AA and the display area AA. The first direction X is perpendicular to the second direction Y. The vertical projection of the edge D of the signal transmission layer 20 away from the display area AA on the substrate 10 overlaps the vertical projection of the signal line L on the substrate 10.

[0124] The conductive layer 40 is arranged on the surface of the insulating layer 30 away from the substrate 10.

[0125] Specifically, the insulating layer 30 is arranged on the side of the signal transmission layer 20 away from the substrate 10, and extends from the display area AA to the partial non-display area NAA, so as to insulate the signal transmission layer 20 and the conductive layer 40. The signal line L is arranged in the signal transmission layer 20 in the signal transmission layer 20. The second area S2 is free of the signal line L. By arranging the insulating layer 30, the distance between the edge D2 of the second area S2 and the display area AA is less than the distance between the edge D of the signal transmission layer 20 away from the display area AA and the display area AA, the second area S2 can be used as a leveling area, so that the overflow edge of the organic encapsulating material can be monitored by the leveling area of the second area S2, and the monitoring effectiveness of the overflow edge of the organic encapsulating material can be ensured, so that the encapsulation effectiveness of the display panel can be ensured. At the same time, the width of the additional leveling area of the insulating layer 30 on the side of the edge D of the signal transmission layer 20 away from the display area AA can be compressed, which is beneficial to realize the narrow frame design of the display panel. Moreover, the second area S2 is free of the signal line L, and when the edge of the insulating layer 30 arranged in the second area S2 is relatively close to the display area AA, the short circuit between the signal line L and the conductive layer 40 can be avoided, and the reliability of the display panel can be ensured.

[0126] On the basis of the above technical solutions, reference is made to Figure 2 and Figure 4The wiring area S includes a first area S1 and a third area S3, which are arranged along the first direction X. The edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 is located on the side of the edge D3 of the insulating layer 30 extending from the display area AA to the third area S3 closer to the display area AA. That is, the distance between the edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge D3 of the insulating layer 30 extending from the display area AA to the third area S3 and the display area AA. And / or, the edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 is located on the side of the edge D1 of the insulating layer 30 extending from the display area AA to the first area S1 closer to the display area AA. That is, the distance between the edge D2 of the insulating layer 30 extending from the display area AA to the second area S2 and the display area AA is less than the distance between the edge D3 of the insulating layer 30 extending from the display area AA to the first area S1 and the display area AA.

[0127] In some embodiments, the conductive layer 40 includes a cathode layer for forming the cathode of a light-emitting device.

[0128] This invention also provides a display device. Figure 10 This is a schematic diagram of a display device provided in an embodiment of the present invention. Figure 10 As shown, the display panel 200 includes the array substrate provided in any embodiment of the present invention. Since the display panel includes the array substrate provided in any embodiment of the present invention, it has the same beneficial effects as the array substrate provided in any embodiment of the present invention, and will not be described again here. The display panel can be, for example, any product or component with display function such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, smart wearable device, or information kiosks in a public lobby.

[0129] 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, 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, The display panel includes a display area and a non-display area surrounding the display area; in a second direction, the area of ​​the non-display area located on one side of the display area includes a first area, a second area, and a third area arranged sequentially along a first direction, wherein the first area is provided with a first signal line, and the third area is provided with a second signal line; the display panel further includes: Substrate; A signal transmission layer is disposed on one side of the substrate for forming the first signal line and / or the second signal line; An insulating layer, at least a portion of which is disposed on the side of the signal transmission layer opposite to the substrate, wherein, in the second direction, the distance between the edge of the insulating layer extending from the display area to the second area and the display area is less than the distance between the edge of the insulating layer extending from the display area to the third area and the display area; wherein, the first direction intersects the second direction.

2. The display panel according to claim 1, characterized in that, In the second direction, the distance between the edge of the insulating layer extending from the display area to the second area and the display area is less than the distance between the edge of the insulating layer extending from the display area to the first area and the display area.

3. The display panel according to claim 2, characterized in that, Along the first direction, the edge of the insulating layer extending from the display area to the first area and the edge of the insulating layer extending from the display area to the third area are on the same straight line; or, in the second direction, the distance between the edge of the insulating layer extending from the display area to the first area and the display area is less than the distance between the edge of the insulating layer extending from the display area to the third area and the display area.

4. The display panel according to claim 2, characterized in that, The vertical projection of the edge of the insulating layer extending from the display area to the first area onto the substrate overlaps with the vertical projection of the first signal line onto the substrate.

5. The display panel according to claim 4, characterized in that, The vertical projection of the edge of the insulating layer extending from the display area to the third area on the substrate overlaps with the vertical projection of the second signal line on the substrate.

6. The display panel according to claim 1 or 2, characterized in that, It also includes a dam set in the non-display area, the dam being arranged around the display area, the dam passing through the first area, the second area and the third area in sequence, the edge of the insulating layer extending from the display area to the second area being located on the side of the dam closer to the display area and spaced apart from the dam.

7. The display panel according to claim 6, characterized in that, The edge of the insulating layer extending from the display area to the first area, the second area, and the third area is located on the side of the dam closer to the display area; along the second direction, the space between the dam and the insulating layer constitutes a leveling area; the width of the leveling area in the second area is greater than the width of the leveling area in the third area.

8. The display panel according to claim 7, characterized in that, The dam includes a portion of the insulating layer, the insulating layer having a first opening located between the dam and the display area, the first opening being the leveling area; the vertical projection of the first opening on the substrate overlaps with the vertical projections of the first area, the second area, and the third area on the substrate; in the second direction, the portions of the first opening near the edge of the display area located in the first area, the second area, and the third area are respectively the edges of the insulating layer extending from the display area to the first area, the second area, and the third area.

9. The display panel according to claim 7, characterized in that, The dam includes a portion of the insulating layer, the insulating layer having a first opening located between the dam and the display area, the first opening being the leveling area; the vertical projection of the first opening on the substrate overlaps with the vertical projection of the second area on the substrate; The vertical projection of the first opening on the substrate is spaced apart from the vertical projection of the third region on the substrate; and / or, the vertical projection of the first opening on the substrate is spaced apart from the vertical projection of the first region on the substrate.

10. The display panel according to claim 7, characterized in that, The width of the leveling area in the second area is greater than the width of the leveling area in the first area.

11. The display panel according to claim 7, characterized in that, The dam includes a first dam and a second dam, the second dam being located on the side of the first dam away from the display area; the first dam sequentially passes through the first area, the second area and the third area, and the leveling area is located between the first dam and the insulation layer.

12. The display panel according to claim 11, characterized in that, The second embankment and the first embankment have a protective zone; the width of the protective zone along the second direction is less than the width of the leveling zone in the second zone.

13. The display panel according to claim 11, characterized in that, The display panel also includes an organic encapsulation layer, with the first dam surrounding the organic encapsulation layer.

14. The display panel according to claim 11, characterized in that, The second dam passes sequentially through the first zone, the second zone, and the third zone; in the first zone, a continuously arranged insulating layer is provided in the gap between the first dam and the second dam; and / or, in the third zone, a continuously arranged insulating layer is provided in the gap between the first dam and the second dam.

15. The display panel according to claim 14, characterized in that, The first dam and the second dam include portions of the insulation layer.

16. The display panel according to claim 1, characterized in that, The vertical projection of the second region on the substrate is spaced apart from the vertical projection of the second signal line on the substrate, and the vertical projection of the second region on the substrate is spaced apart from the vertical projection of the first signal line on the substrate.

17. The display panel according to claim 16, characterized in that, The signals transmitted by the first signal line and the second signal line may be the same or different.

18. The display panel according to claim 17, characterized in that, The first signal line and the second signal line transmit different signals. The display panel also includes a light-emitting device and a pixel circuit connected to the light-emitting device. The first signal line is used to provide a first power signal to the cathode of the light-emitting device; the second signal line is used to provide a second power signal to the pixel circuit.

19. The display panel according to claim 1, characterized in that, The non-display area includes a binding area; along the second direction, the first area, the second area, and the third area are disposed between the binding area and the display area.

20. The display panel according to claim 19, characterized in that, The non-display area includes two first areas and two second areas; the two first areas are symmetrically arranged about the third area, and the two second areas are symmetrically arranged about the third area.

21. The display panel according to claim 1 or 2, characterized in that, It also includes a conductive layer disposed on the side of the insulating layer away from the substrate, the conductive layer extending from the display area to the non-display area; the edge of the insulating layer extending from the display area to the third area is located on the side of the edge of the conductive layer away from the display area.

22. The display panel according to claim 21, characterized in that, The insulating layer extends from the display area to the edge of the first area, located on the side of the edge of the conductive layer away from the display area.

23. The display panel according to claim 21, characterized in that, The conductive layer includes a cathode layer, which is used to form the cathode of the light-emitting device in the sub-pixel.

24. The display panel according to claim 1, characterized in that, The signal transmission layer includes a first signal transmission layer, and the insulating layer includes a first insulating layer. The first insulating layer is disposed on the side of the first signal transmission layer facing away from the substrate. The first signal transmission layer is used to form the first signal line and the second signal line. The distance between the edge of the first insulating layer extending from the display area to the second area and the display area is less than the distance between the edge of the first insulating layer extending from the display area to the third area and the display area. Along a direction away from the substrate, the display panel includes a gate electrode layer, a capacitor plate layer, a first source / drain electrode layer, a first planarization layer, a second source / drain electrode layer, a second planarization layer, and a pixel definition layer disposed sequentially. The first signal transmission layer is the first source / drain electrode layer, and the first insulating layer includes at least one of the first planarization layer, the second planarization layer, and the pixel definition layer; or, the first signal transmission layer is the second source / drain electrode layer, and the first insulating layer includes at least one of the second planarization layer and the pixel definition layer.

25. The display panel according to claim 1, characterized in that, The signal transmission layer includes a first signal transmission layer and a second signal transmission layer. The insulating layer includes a first insulating layer and a second insulating layer. The first insulating layer is disposed on the side of the first signal transmission layer facing away from the substrate, and the second signal transmission layer is disposed on the side of the first insulating layer facing away from the substrate. The second insulating layer is disposed on the side of the second signal transmission layer facing away from the substrate. The edge of the first insulating layer is located on the side of the edge of the second insulating layer closer to the display area. In the second direction, the first signal transmission layer and the second signal transmission layer extend beyond the edge of the first insulating layer, and the portion of the first signal transmission layer extending beyond the first insulating layer overlaps with the portion of the second signal transmission layer extending beyond the first insulating layer. The distance between the edge of the second insulating layer extending from the display area to the second area and the display area is less than the distance between the edge of the second insulating layer extending from the display area to the third area and the display area.

26. The display panel according to claim 25, characterized in that, The distance between the edge of the second insulating layer extending from the display area and the edge of the second area is less than the distance between the edge of the second insulating layer extending from the display area to the first area and the display area.

27. The display panel according to claim 26, characterized in that, Along a direction away from the substrate, the display panel includes a gate electrode layer, a capacitor electrode layer, a first source / drain electrode layer, a first planarization layer, a second source / drain electrode layer, a second planarization layer, and a pixel definition layer disposed sequentially; the first signal transmission layer is the first source / drain electrode layer, the second signal transmission layer is the second source / drain electrode layer, the first insulating layer is the first planarization layer, and the second insulating layer includes at least one of the second planarization layer and the pixel definition layer.

28. The display panel according to claim 27, characterized in that, The first signal transmission layer includes a first lower layer, a first middle layer, and a first upper layer stacked together, wherein the first lower layer, the first middle layer, and the first upper layer are conductive layers.

29. The display panel according to claim 28, characterized in that, The materials of the first lower layer and the first upper layer are titanium.

30. The display panel according to claim 29, characterized in that, The material of the first middle layer is aluminum.

31. The display panel according to claim 27, characterized in that, The second signal transmission layer includes a second lower layer, a second middle layer, and a second upper layer stacked together, wherein the second lower layer, the second middle layer, and the second upper layer are conductive layers.

32. The display panel according to claim 31, characterized in that, The materials of the second lower layer and the second upper layer are titanium.

33. The display panel according to claim 32, characterized in that, The material of the second middle layer is aluminum.

34. A display panel, characterized in that, The display panel includes a display area and a non-display area surrounding the display area; in a second direction, the area of ​​the non-display area located on one side of the display area includes a trace area and a second area arranged along a first direction, and the display panel further includes signal lines; the signal lines are located within the trace area and outside the second area; the display panel further includes: Substrate; A signal transmission layer is disposed on one side of the substrate, and at least a portion of the signal transmission layer is used to form the signal line; An insulating layer, at least a portion of which is disposed on the side of the signal transmission layer opposite to the substrate, wherein, in the second direction, the distance between the edge of the insulating layer extending from the display area to the second area and the display area is less than the distance between the edge of the insulating layer extending from the display area to the trace area and the display area; wherein, the first direction intersects the second direction; and the vertical projection of the edge of the insulating layer extending from the display area to the trace area on the substrate overlaps with the vertical projection of the signal line on the substrate; A conductive layer is disposed on the surface of the insulating layer opposite to the substrate.

35. The display panel according to claim 34, characterized in that, The wiring area includes a first area and a third area, and the first area, the second area and the third area are arranged along the first direction; the distance between the edge of the insulating layer extending from the display area to the second area and the display area is less than the distance between the edge of the insulating layer extending from the display area to the third area and the display area, and / or, the distance between the edge of the insulating layer extending from the display area to the second area and the display area is less than the distance between the edge of the insulating layer extending from the display area to the first area and the display area.

36. The display panel according to claim 35, characterized in that, The conductive layer includes a cathode layer.

37. A display device, characterized in that, Includes the display panel as described in any one of claims 1-36.

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