Display substrate and display apparatus

Abstract

A display substrate and a display apparatus. The display substrate comprises a display area and a special-shaped peripheral area located on the periphery of the display area. The display substrate further comprises a first signal line and a scanning line. The first signal line comprises at least a part that extends in a first direction, the scanning line comprises at least a part that extends in a second direction, and the first direction intersects the second direction. The first signal line comprises a transmission part and a fan-out part. The transmission part is located in the display area, and the fan-out part is located in the special-shaped peripheral area. The scanning line comprises a first scanning part and a second scanning part. The first scanning part is located in the display area, and the second scanning part is located in the special-shaped peripheral area. The orthographic projection of the second scanning part on the base substrate of the display substrate at least partially overlaps the orthographic projection of the fan-out part on the base substrate.

Description

Display substrate and display device Technical Field

[0001] The present disclosure relates to the field of display technology, and in particular to a display substrate and a display device. Background Art

[0002] With the continuous development of display technology, the application fields of display products are becoming increasingly broad, and people's requirements for user experience and aesthetics of display products are also becoming higher and higher. As people's demand for screen-to-body ratio increases, full-screen displays have become the mainstream of the market. The current mainstream method of achieving full-screen is to adopt a special-shaped screen design, that is, the corners of the display area are rounded and a notch area is designed on one side of the display area.

[0003] Summary of the Invention

[0004] An object of the present disclosure is to provide a display substrate and a display device.

[0005] In order to achieve the above objectives, the present disclosure provides the following technical solutions:

[0006] A first aspect of the present disclosure provides a display substrate, comprising: a display area and a profiled peripheral area located around the display area; the display substrate further comprising a first signal line and a scan line, the first signal line including at least a portion extending along a first direction, the scan line including at least a portion extending along a second direction, the first direction intersecting the second direction;

[0007] At least part of the first signal lines includes a transmission portion and a fan-out portion, the transmission portion is located in the display area, and the fan-out portion is located in the special-shaped peripheral area;

[0008] At least part of the scanning line includes a first scanning part and a second scanning part, the first scanning part is located in the display area, the second scanning part is located in the special-shaped peripheral area, and the orthographic projection of the second scanning part on the base substrate of the display substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate.

[0009] Optionally, the second scanning portion includes a scanning main body and at least one scanning protrusion, and the scanning main body is coupled to the first scanning portion and each of the scanning protrusions respectively;

[0010] At least a portion of the scanning main body portion extends along the second direction, the scanning protrusion protrudes beyond the scanning main body portion along the first direction, and the orthographic projection of the scanning main body portion on the substrate at least partially overlaps with the orthographic projection of the fan-out portion on the substrate; and / or the orthographic projection of the scanning protrusion on the substrate at least partially overlaps with the orthographic projection of the fan-out portion on the substrate.

[0011] Optionally, the second scanning portion includes a plurality of scanning protrusions sequentially arranged along the second direction, and a width of the scanning protrusions along the second direction is greater than a width of the scanning main body along the first direction.

[0012] Optionally, the line width of the fan-out part is the same as the line width of the transmission part, or the line width of the fan-out part is greater than the line width of the transmission part.

[0013] Optionally, the irregular peripheral area includes a corner area, the corner area includes a transition area and a first compensation area, the transition area is located between the first compensation area and the corner of the display area, and in the first compensation area, the orthographic projection of the second scanning part on the substrate at least partially overlaps with the orthographic projection of the fan-out part on the substrate.

[0014] Optionally, the irregular peripheral area includes a bangs area, which is semi-surrounded by the display area; in the bangs area, the orthographic projection of the scanning main body on the base substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate; and / or, the orthographic projection of the scanning protrusion on the base substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate.

[0015] Optionally, the bangs area includes two symmetrically arranged second compensation areas, and the two second compensation areas are arranged along the second direction; in the second compensation area, the orthographic projection of the scanning main body on the base substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate; the orthographic projection of the scanning protrusion on the base substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate.

[0016] Optionally, the bangs area also includes two symmetrically arranged third compensation areas, and the two third compensation areas are located between the two second compensation areas; in the third compensation area, the scanning main body extends along a third direction, and the third direction intersects with both the first direction and the second direction; in the third compensation area, the orthographic projection of the scanning main body on the base substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate.

[0017] Optionally, the fringe area further includes a fourth compensation area, and the fourth compensation area is located between the two third compensation areas;

[0018] The scanning main body portion includes a scanning compensation portion located in the fourth compensation area, and the scanning compensation portion extends along the second direction;

[0019] The fan-out portion includes a fan-out compensation part located in the fourth compensation area, and the fan-out compensation part adopts a bow-shaped structure. The bow-shaped structure includes a plurality of first fan-out sub-graphics arranged along a first direction, and the first fan-out sub-graphics extend along the second direction. The orthographic projection of the first fan-out sub-graphics on the substrate at least partially overlaps with the orthographic projection of the corresponding scanning compensation part on the substrate; the bow-shaped structure also includes a plurality of second fan-out sub-graphics, and the second fan-out sub-graphics extend along the first direction. Adjacent first fan-out sub-graphics are coupled through corresponding second fan-out sub-graphics.

[0020] Optionally, the line width of the scanning compensation portion is greater than the line width of the first scanning portion.

[0021] Optionally, the scanning compensation portion includes a first side portion and a second side portion arranged opposite to each other along the first direction; an orthographic projection of at least one of the first side portion and the second side portion on the substrate includes: a first sub-portion and a second sub-portion alternately arranged along the second direction, the second sub-portion extending along the second direction, the extension direction of the first sub-portion being different from the extension direction of the second sub-portion, and adjacent first sub-portions being coupled to the second sub-portions;

[0022] The orthographic projection of the first fan-out sub-graph on the substrate at least partially overlaps with the orthographic projection of at least one corresponding first sub-portion on the substrate; and / or the orthographic projection of the second fan-out sub-graph on the substrate at least partially overlaps with the orthographic projection of at least one corresponding first sub-portion on the substrate.

[0023] Optionally, the display substrate further includes a common electrode layer, and the orthographic projection of the common electrode layer on the base substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate of the display substrate; and / or, the orthographic projection of the common electrode layer on the base substrate at least partially overlaps with the orthographic projection of the second scanning part on the base substrate.

[0024] Optionally, the first signal line includes a data line and / or a touch signal line.

[0025] Optionally, the display substrate includes a gate metal layer and a source / drain metal layer, and the gate metal layer is located between the source / drain metal layer and the base substrate;

[0026] The scan line is provided in the same layer and made of the same material as the gate metal layer; and the first signal line is provided in the same layer and made of the same material as the source / drain metal layer.

[0027] Based on the technical solution of the above-mentioned display substrate, a second aspect of the present disclosure provides a display device, comprising the above-mentioned display substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0029] FIG1 is a schematic diagram of a layout of a display substrate provided by an embodiment of the present disclosure;

[0030] FIG2 is another schematic diagram of the layout of a display substrate provided in an embodiment of the present disclosure;

[0031] FIG3 is a schematic diagram of another layout of a display substrate provided in an embodiment of the present disclosure;

[0032] FIG4 is a schematic diagram of the layout of the upper left corner of a display substrate provided by an embodiment of the present disclosure;

[0033] FIG5 is an enlarged schematic diagram of portion Y1 in FIG3 ;

[0034] FIG6 is a schematic diagram of the layout of the gate metal layer in FIG5 ;

[0035] FIG7 is a schematic diagram of the layout of the source and drain metal layers in FIG5 ;

[0036] FIG8 is a schematic cross-sectional view of the overlap between the fan-out portion and the scanning protrusion;

[0037] FIG9 is an enlarged schematic diagram of portion Y2 in FIG3 ;

[0038] FIG10 is a schematic diagram of the layout of the gate metal layer in FIG9;

[0039] FIG11 is a schematic diagram of the layout of the source and drain metal layers in FIG9 ;

[0040] FIG12 is an enlarged schematic diagram of portion Y3 in FIG3 ;

[0041] FIG13 is a schematic diagram of the layout of the gate metal layer in FIG12;

[0042] FIG14 is a schematic diagram of the layout of the source and drain metal layers in FIG12 ;

[0043] FIG15 is a schematic diagram showing the capacitance and resistance differences of scan lines in different areas of a display substrate after load compensation is performed according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] In order to further illustrate the display substrate and the display device provided by the embodiments of the present disclosure, a detailed description is given below with reference to the accompanying drawings.

[0045] When a special-shaped screen design is used to achieve full-screen display, the special-shaped screen design will cause a load difference between the signal lines passing through the normal area and the signal lines passing through the special-shaped area in the array substrate.

[0046] Referring to FIG. 2 , FIG. 3 , and FIG. 5 to FIG. 14 , an embodiment of the present disclosure provides a display substrate, comprising: a display area 10 and a profiled peripheral area 20 located around the display area 10 ; the display substrate further comprising a first signal line 30 and a scan line 40 , wherein the first signal line 30 includes at least a portion extending along a first direction, and the scan line 40 includes at least a portion extending along a second direction, wherein the first direction intersects the second direction;

[0047] At least part of the first signal line 30 includes a transmission portion 301 and a fan-out portion 302 , wherein the transmission portion 301 is located in the display area 10 , and the fan-out portion 302 is located in the special-shaped peripheral area 20 ;

[0048] At least part of the scanning line 40 includes a first scanning part 401 and a second scanning part 402, the first scanning part 401 is located in the display area 10, the second scanning part 402 is located in the special-shaped peripheral area 20, and the orthographic projection of the second scanning part 402 on the base substrate of the display substrate at least partially overlaps with the orthographic projection of the fan-out part 302 on the base substrate.

[0049] Exemplarily, the first signal lines 30 include data lines and / or touch signal lines. The data lines are used to transmit data signals, and the touch signal lines are used to transmit touch signals.

[0050] Exemplarily, the display substrate includes a gate metal layer and a source / drain metal layer, wherein the gate metal layer is located between the source / drain metal layer and the base substrate; the scan line 40 is provided in the same layer and material as the gate metal layer; and the first signal line 30 is provided in the same layer and material as the source / drain metal layer. For example, the gate metal layer is used to form the gate of a transistor in the display substrate, and the source / drain metal layer is used to form the source and drain of the transistor, but the present invention is not limited thereto.

[0051] For example, the display area 10 has rounded corners, and the irregular peripheral area 20 includes a corner region 50, which can be arranged around the rounded corners. For example, the display area 10 has four rounded corners, and the irregular peripheral area 20 includes four corner regions 50 corresponding to the four rounded corners, with each corner region 50 arranged around a corresponding rounded corner.

[0052] Exemplarily, the irregular peripheral area 20 includes a notch area N1 , which is located on one side of the display area 10 and is half-surrounded by the display area 10 .

[0053] Exemplarily, the display substrate includes a plurality of sub-pixels distributed in an array, and the sub-pixels include coupled sub-pixel driving circuits and pixel electrodes; the plurality of sub-pixel driving circuits included in the plurality of sub-pixels are divided into a plurality of rows of sub-pixel driving circuits and a plurality of columns of sub-pixel driving circuits. The plurality of rows of sub-pixel driving circuits are arranged along a first direction, and each row of sub-pixel driving circuits includes a plurality of sub-pixel driving circuits arranged along a second direction. The plurality of columns of sub-pixel driving circuits are arranged along a second direction, and each column of sub-pixel driving circuits includes a plurality of sub-pixel driving circuits arranged along the first direction. Exemplarily, the first direction and the second direction intersect. For example, the first direction includes a longitudinal direction, and the second direction includes a transverse direction.

[0054] Exemplarily, the scan line 40 is coupled to each sub-pixel driving circuit in a corresponding row of sub-pixel driving circuits, and the data line is coupled to each sub-pixel driving circuit in a corresponding column of sub-pixel driving circuits. The sub-pixel driving circuit is configured to write the data signal transmitted by the data line into the pixel electrode coupled to the sub-pixel driving circuit under the control of the scan signal transmitted by the scan line 40. For example, the sub-pixel driving circuit includes a transistor, the gate of the transistor is coupled to the corresponding scan line 40, the first electrode of the transistor is coupled to the corresponding data line, and the second electrode of the transistor is coupled to the corresponding pixel electrode, but is not limited thereto.

[0055] As shown in Figure 3, exemplarily, the first signal line 30 includes a transmission part 301 and a fan-out part 302 of an integrated structure, and the transmission part 301 is located in the display area 10. When the first signal line 30 includes a data line, the transmission part 301 is coupled to the corresponding sub-pixel driving circuits in the display area 10, and the fan-out part 302 is located in the special-shaped peripheral area 20.

[0056] As shown in Figure 2, exemplarily, the scanning line 40 includes a first scanning part 401 and a second scanning part 402 of an integrated structure, the first scanning part 401 is located in the display area 10, the first scanning part 401 is coupled to the corresponding sub-pixel driving circuits in the display area 10, and the second scanning part 402 is located in the special-shaped peripheral area 20.

[0057] Research has found that the irregular screen design causes a load difference between signal lines in the array substrate that pass through the normal area and those that pass through the irregular area. This load difference is caused by the difference in signal line length. More specifically, the scan lines 40 that pass through the normal area are of different lengths from those that pass through the irregular area, and the data lines that pass through the normal area are of different lengths from those that pass through the irregular area. This results in a load difference between the scan lines 40 that pass through the normal area and the scan lines 40 that pass through the irregular area, and a load difference between the data lines that pass through the normal area and the data lines that pass through the irregular area. This leads to a difference in the charging rate of the sub-pixels, resulting in a difference in the voltage of the pixel electrodes. This results in a difference in the display brightness of the irregular area compared to the normal area, leading to macroscopic blocking.

[0058] As shown in Figure 1, the display substrate includes four irregularly shaped rounded corners (R1, R2, R3, and R4), as well as a notch area (N1). Gate-n, Gate-m, and Gate-x represent scan lines 40 of varying lengths in the upper irregularly shaped area, the middle normal area, and the lower irregularly shaped area, respectively. This indicates that the lengths of scan lines 40 in the irregularly shaped area differ from those in the normal area, leading to load differences that affect the output waveforms of scan lines 40, resulting in differences in sub-pixel charging and brightness, creating horizontal blocks.

[0059] Before performing the load compensation, the RC loading (resistance and capacitance loading) of the irregular area and the normal area can be calculated to determine the difference in RC loading between the normal and irregular areas. Only when this difference is small will the output waveform of the scan line 40 be unaffected, thereby not affecting the pixel voltage and ensuring that the screen has no horizontal blocks or stripes.

[0060] As shown in Figure 2, using Gate-n and Gate-m as an example, based on the dual-side charging of the gate drive circuit, Gate-n is divided into five sections. Segments A1 and A5 located at the two corners (R) on either side, and segment A3 located in the center (notch area N1) are compensation areas, while segments A2 and A4 are regular pixel areas. Assuming that the number of pixels occupied by A1 is n1, the overlap area between the scan line 40 and the first signal line 30 of a single pixel is S1; the number of pixels occupied by A3 is n3, and the overlap area between the scan line 40 and the first signal line 30 of a single pixel is S3; the number of pixels occupied by A2 or A4 is n2, and the overlap area between the scan line 40 and the first signal line 30 of a single pixel is S2. Since the spacing between the scan lines 40 and the first signal lines 30 is designed to be the same, and is equal to the thickness of the insulating layer, assumed to be d, the total load capacitance of Gate-n is: Cn = C1 + C2 + C3 + C4 + C5 = 2ε*n1*S1 / d + 2ε*n2*S2 / d + ε*n3*S3 / d, and the total load capacitance of Gate-m is: Cm = (2*n1 + n3 + 2*n2)*ε*S2 / d. After compensation, the difference between Cn and Cm is less than 4%.

[0061] As shown in Figure 15, the dotted line extending vertically in the figure represents the dividing line. The left side of the dividing line represents the scan line passing through the bangs area and the corner area, and the right side of the dividing line represents the scan line passing only through the normal area. The horizontal axis corresponding to the first curve represents the number of scan lines from top to bottom, and the corresponding vertical axis represents the load resistance corresponding to the scan line. The unit of the vertical axis is ohm. The horizontal axis corresponding to the second curve represents the number of scan lines from top to bottom, and the corresponding vertical axis represents the load capacitance corresponding to the scan line. The unit of the vertical axis is pf. It can be seen from the figure that the maximum load resistance difference between the scan lines in the irregular area and the normal area is 3.35%; the maximum load capacitance difference between the scan lines in the irregular area and the normal area is 0.72%. At the same time, after simulating the difference in ΔVp (pixel electrode voltage between the irregular area and the normal area), it can meet the requirement of less than 12mV.

[0062] According to the specific structure of the above-mentioned display substrate, in the display substrate provided by the embodiment of the present disclosure, by setting the first signal line 30 to include a transmission part 301 and a fan-out part 302, the transmission part 301 is located in the display area 10, and the fan-out part 302 is located in the irregular peripheral area 20, the first signal line 30 is extended from the display area 10 to the irregular peripheral area 20; at the same time, by setting the scan line 40 to include a first scanning part 401 and a second scanning part 402, the first scanning part 401 is located in the display area 10, and the second scanning part 402 is located in the irregular peripheral area 20, the scan line 40 is extended from the display area 10 to the irregular peripheral area 20; and by setting The orthographic projection of the second scanning portion 402 on the base substrate of the display substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the base substrate, so that in the irregular peripheral area 20, the fan-out portion 302 and the second scanning line 40 form a load compensation for the first signal line 30 and the scanning line 40, thereby effectively reducing the load difference between the scanning line 40 in the irregular area and the scanning line 40 in the normal area of ​​the display substrate, and effectively reducing the load difference between the first signal line 30 in the irregular area and the first signal line 30 in the normal area of ​​the display substrate, so that when the display substrate is applied to a display product, the user will not feel the display brightness difference in different areas of the display product.

[0063] Therefore, in the display substrate provided in the embodiment of the present disclosure, by reasonably increasing the length of the fan-out portion 302, the length of the second scanning portion 402, and the overlapping area between the orthographic projection of the second scanning portion 402 on the base substrate and the orthographic projection of the fan-out portion 302 on the base substrate, capacitance and resistance compensation of the first signal line 30 and the scanning line 40 are achieved, and the load difference between the scanning line 40 in the irregular area and the scanning line 40 in the normal area of ​​the display substrate can be less than 4%, and the load difference between the first signal line 30 in the irregular area and the first signal line 30 in the normal area of ​​the display substrate can be less than 4%, so that the brightness difference will not be visible to the user on a macro scale.

[0064] As shown in FIG5 to FIG7, FIG9 to FIG11, in some embodiments, the second scanning portion 402 is provided to include a scanning main body portion 4021 and at least one scanning protrusion 4022, and the scanning main body portion 4021 is coupled to the first scanning portion 401 and each of the scanning protrusions 4022 respectively;

[0065] At least a portion of the scanning main body portion 4021 extends along the second direction, the scanning protrusion 4022 protrudes from the scanning main body portion 4021 along the first direction, and the orthographic projection of the scanning main body portion 4021 on the base substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the base substrate; and / or, the orthographic projection of the scanning protrusion 4022 on the base substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the base substrate, as shown in Figure 8, Figure 8 also includes a base substrate 80, a gate insulation layer GI, a first passivation layer PVX1, an organic layer ORG, a common electrode layer 70 and a second passivation layer PVX2.

[0066] Illustratively, the second scanning portion 402 includes a scanning main body portion 4021 and a plurality of scanning protrusions 4022 , the scanning main body portion 4021 is coupled to the plurality of scanning protrusions 4022 respectively, and the plurality of scanning protrusions 4022 are arranged in sequence along the extension direction of the scanning main body portion 4021 to which they are coupled.

[0067] Illustratively, the second scanning portion 402 includes a plurality of scanning protrusions 4022 sequentially arranged along the second direction, and a width of the scanning protrusions 4022 along the second direction is greater than a width of the scanning main body 4021 along the first direction.

[0068] The above-mentioned setting method can better increase the overlapping area between the second scanning part 402 and the fan-out part 302 in the irregular peripheral area 20, so that in the irregular peripheral area 20, the fan-out part 302 and the second scanning line 40 better form a load compensation for the first signal line 30 and the scanning line 40, thereby effectively reducing the load difference between the scanning line 40 in the irregular area and the scanning line 40 in the normal area of ​​the display substrate, and effectively reducing the load difference between the first signal line 30 in the irregular area and the first signal line 30 in the normal area of ​​the display substrate, so that when the display substrate is applied to a display product, the user will not feel the display brightness difference in different areas of the display product.

[0069] As shown in Figures 5 to 7 and Figures 9 to 11, in some embodiments, the line width of the fan-out part 302 is set to be the same as the line width of the transmission part 301, or the line width of the fan-out part 302 is greater than the line width of the transmission part 301.

[0070] The above-mentioned setting method can reasonably layout the fan-out part 302 according to the size of the available space of the special-shaped peripheral area 20. When the available layout space is limited, the line width of the fan-out part 302 can be set to be the same as the line width of the transmission part 301. When the available layout space is large, the line width of the fan-out part 302 can be set to be larger than the line width of the transmission part 301. Therefore, the above-mentioned setting method can better reduce the layout difficulty of the fan-out part 302 while ensuring load compensation.

[0071] As shown in Figures 4 to 8, in some embodiments, the special-shaped peripheral area 20 is provided to include a corner area 50, and the corner area 50 includes a transition area 501 and a first compensation area 502. The transition area 501 is located between the first compensation area 502 and the corner of the display area 10. In the first compensation area 502, the orthographic projection of the second scanning portion 402 on the substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the substrate.

[0072] Figure 4 also illustrates the virtual sub-pixel layout area Dum-P, the electrostatic discharge circuit layout area ESD, the common electrode line layout area com, the outer common electrode line layout area Out-com, the test circuit layout area CT, and the boundary cutting area Cut-M of the display substrate. The width of the boundary cutting area Cut-M represents the cutting margin.

[0073] The above-mentioned setting method ensures that the first compensation area 502 will not be adjacent to the display area 10. This ensures the overlapping area of ​​the fan-out part 302 and the second scanning part 402 while reducing the layout difficulty of the fan-out part 302 and the second scanning part 402 in the special-shaped peripheral area 20.

[0074] As shown in Figures 9 to 11, in some embodiments, the special-shaped peripheral area 20 includes a bangs area N1, which is half-surrounded by the display area 10; in the bangs area N1, the orthographic projection of the scanning main body 4021 on the base substrate at least partially overlaps with the orthographic projection of the fan-out part 302 on the base substrate; and / or, the orthographic projection of the scanning protrusion 4022 on the base substrate at least partially overlaps with the orthographic projection of the fan-out part 302 on the base substrate.

[0075] Exemplarily, the notch area N1 is configured to include two symmetrically arranged second compensation areas 60, the two second compensation areas 60 being arranged along the second direction. In the second compensation areas 60, the orthographic projection of the scanning main portion 4021 on the substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the substrate. The orthographic projection of the scanning protrusion 4022 on the substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the substrate. Because the length of the scan line 40 near the notch area N1 is longer than that of the scan line 40 in the normal area, the resistance is greater. The configuration of the second scan line 40 including the scanning main portion 4021 and the scanning protrusion 4022 in the second compensation area 60 facilitates reducing the resistance of the scan line 40, thereby narrowing the load difference between the scan line 40 near the notch area N1 and the scan line 40 in the normal area.

[0076] Exemplarily, the bangs area N1 also includes two symmetrically arranged third compensation areas 61, and the two third compensation areas 61 are located between the two second compensation areas 60; in the third compensation areas 61, the scanning main body portion 4021 extends along a third direction, and the third direction intersects with both the first direction and the second direction; in the third compensation area 61, the orthographic projection of the scanning main body portion 4021 on the substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the substrate.

[0077] The above-mentioned setting method enables the fan-out portion 302 and the second scan line 40 in the bangs area N1 to form a load compensation for the first signal line 30 and the scan line 40, thereby effectively reducing the load difference between the scan line 40 in the irregular area and the scan line 40 in the normal area of ​​the display substrate, and effectively reducing the load difference between the first signal line 30 in the irregular area and the first signal line 30 in the normal area of ​​the display substrate, so that when the display substrate is applied to a display product, the user will not feel the display brightness difference in different areas of the display product.

[0078] As shown in FIG. 12 to FIG. 14 , in some embodiments, the notch area N1 further includes a fourth compensation area 62 , and the fourth compensation area 62 is located between the two third compensation areas 61 ;

[0079] The scanning main body 4021 includes a scanning compensation portion 4021a located in the fourth compensation area 62, and the scanning compensation portion 4021a extends along the second direction;

[0080] The fan-out portion 302 includes a fan-out compensation portion 3021 located in the fourth compensation area 62, and the fan-out compensation portion 3021 adopts a bow-shaped structure. The bow-shaped structure includes a plurality of first fan-out sub-graphs 3021a arranged along a first direction, and the first fan-out sub-graphs 3021a extend along the second direction. The orthographic projection of the first fan-out sub-graph 3021a on the substrate at least partially overlaps with the orthographic projection of the corresponding scanning compensation portion 4021a on the substrate; the bow-shaped structure also includes a plurality of second fan-out sub-graphs 3021b, and the second fan-out sub-graphs 3021b extend along the first direction. Adjacent first fan-out sub-graphs 3021a are coupled through corresponding second fan-out sub-graphs 3021b.

[0081] Exemplarily, the fourth compensation area 62 is provided with a plurality of scanning compensation portions 4021 a included in a plurality of scanning lines 40 , the plurality of scanning compensation portions 4021 a are arranged along the first direction, and each of the scanning compensation portions 4021 a extends along the second direction.

[0082] Exemplarily, the fourth compensation area 62 is provided with a plurality of fan-out compensation parts 3021 included in the plurality of first signal lines 30 , the plurality of fan-out compensation parts 3021 are arranged along the second direction, and each fan-out compensation part 3021 has a bow-shaped structure.

[0083] Illustratively, the line width of the scan compensation portion 4021a is greater than the line width of the first scan portion 401. The line width of the fan-out compensation portion 3021a is greater than the line width of the transmission portion 301.

[0084] The above-mentioned arrangement of the fan-out part 302 including the bow-shaped fan-out compensation part 3021 in the fourth compensation area 62 increases the winding length of the fan-out part 302 in the fourth compensation area 62, and increases the overlapping area of ​​the fan-out part 302 between the fourth compensation area 62 and the scanning compensation part 4021a; at the same time, by increasing the line width of the scanning compensation part 4021a and the line width of the fan-out compensation part 3021, the overlapping area of ​​the fan-out part 302 between the fourth compensation area 62 and the scanning compensation part 4021a is further increased. Therefore, in the fourth compensation area 62, the capacitance and resistance compensation of the scan line 40 and the first signal line 30 are achieved, and the load of the scan line 40 and the first signal line 30 is compensated, thereby effectively reducing the load difference between the scan line 40 in the special-shaped area and the scan line 40 in the normal area of ​​the display substrate, and effectively reducing the load difference between the first signal line 30 in the special-shaped area and the first signal line 30 in the normal area of ​​the display substrate, so that the normal display of the picture can be guaranteed when the display panel formed by the display substrate is subjected to a cell test. When the display substrate is applied to a display product, the user will not feel the display brightness difference in different areas of the display product.

[0085] As shown in FIG12 to FIG14 , in some embodiments, the scanning compensation portion 4021a includes a first side portion b1 and a second side portion b2 arranged opposite to each other along the first direction; an orthographic projection of at least one of the first side portion b1 and the second side portion b2 on the substrate includes: first sub-portions h1 and second sub-portions h2 alternately arranged along the second direction, the second sub-portion h2 extending along the second direction, the extension direction of the first sub-portion h1 being different from the extension direction of the second sub-portion h2, and adjacent first sub-portions h1 and second sub-portions h2 being coupled;

[0086] The orthographic projection of the first fan-out sub-graph 3021a on the substrate substrate at least partially overlaps with the orthographic projection of at least one corresponding first sub-portion h1 on the substrate substrate; and / or, the orthographic projection of the second fan-out sub-graph 3021b on the substrate substrate at least partially overlaps with the orthographic projection of at least one corresponding first sub-portion h1 on the substrate substrate.

[0087] Illustratively, the orthographic projection of each first fan-out sub-pattern 3021a on the substrate at least partially overlaps with the orthographic projections of two corresponding first sub-portions h1 on the substrate. The two first sub-portions h1 belong to the same scan compensation portion 4021a.

[0088] Illustratively, the orthographic projection of each second fan-out sub-pattern 3021b on the substrate at least partially overlaps with the orthographic projections of two corresponding first sub-portions h1 on the substrate, and the two first sub-portions h1 belong to different scan compensation portions 4021a.

[0089] Exemplarily, the first sub-portion h1 includes a broken line shape, a wave shape, an arc shape, etc., but is not limited thereto.

[0090] Exemplarily, the first sub-portion h1 comprises an arc, with the opening of the arc facing away from the scanning compensation portion 4021a to which it belongs, that is, the opening of the arc faces the adjacent scanning compensation portion 4021a. This arrangement helps reduce the layout space occupied by the scanning compensation portion 4021a, reducing the difficulty of layout of the scanning compensation portion 4021a within the limited layout space.

[0091] The above-mentioned method is implemented by setting the first side b1 and the second side b2 to include a first sub-part h1, and setting the orthographic projection of the first fan-out sub-graph 3021a on the substrate to at least partially overlap with the orthographic projection of at least one corresponding first sub-part h1 on the substrate; and / or setting the orthographic projection of the second fan-out sub-graph 3021b on the substrate to at least partially overlap with the orthographic projection of at least one corresponding first sub-part h1 on the substrate; increasing the side line length of the first fan-out sub-graph 3021a and / or the second fan-out sub-graph 3021b climbing the scanning compensation part 4021a, thereby increasing the line width of the fan-out compensation part 3021 in disguised form, and improving the breakage problem of the fan-out compensation part 3021 when crossing the scanning compensation part 4021a.

[0092] Moreover, the above configuration increases the overlapping area between the fan-out compensation portion 3021 and the scan compensation portion 4021 a, thereby better achieving load compensation for the scan line 40 and the first signal line 30 .

[0093] As shown in Figure 8, in some embodiments, the display substrate further includes a common electrode layer 70, and the orthographic projection of the common electrode layer 70 on the base substrate at least partially overlaps with the orthographic projection of the fan-out portion 302 on the base substrate of the display substrate; and / or, the orthographic projection of the common electrode layer 70 on the base substrate at least partially overlaps with the orthographic projection of the second scanning portion 402 on the base substrate.

[0094] Exemplarily, the common electrode layer 70 is made of indium tin oxide, but is not limited thereto.

[0095] Exemplarily, the orthographic projection of the common electrode layer 70 on the base substrate covers the orthographic projection of the fan-out part 302 on the base substrate of the display substrate; and / or, the orthographic projection of the common electrode layer 70 on the base substrate covers the orthographic projection of the second scanning part 402 on the base substrate.

[0096] Exemplarily, the orthographic projection of the common electrode layer 70 on the base substrate at least partially overlaps with the orthographic projection of the transmission part 301 on the base substrate of the display substrate; and / or, the orthographic projection of the common electrode layer 70 on the base substrate at least partially overlaps with the orthographic projection of the first scanning part 401 on the base substrate.

[0097] Exemplarily, the orthographic projection of the common electrode layer 70 on the base substrate covers the orthographic projection of the transmission part 301 on the base substrate of the display substrate; and / or, the orthographic projection of the common electrode layer 70 on the base substrate covers the orthographic projection of the first scanning part 401 on the base substrate.

[0098] The above-mentioned setting method ensures that the stacking structure of the film layer in the irregular peripheral area 20 where the fan-out part 302 and the second scanning part 402 are located is consistent with that in the display area 10, thereby further reducing the load difference between the scanning line 40 in the irregular area and the scanning line 40 in the normal area of ​​the display substrate, as well as the load difference between the first signal line 30 in the irregular area and the first signal line 30 in the normal area of ​​the display substrate.

[0099] An embodiment of the present disclosure further provides a display device, comprising the display substrate provided by the above embodiment.

[0100] Exemplarily, the display device includes a medium or large-sized liquid crystal display device, but is not limited thereto. The display device may adopt an ADS design, but is not limited thereto.

[0101] Exemplarily, the display device further includes a color filter substrate and a liquid crystal layer. The color filter substrate is arranged opposite to the display substrate, and the liquid crystal layer is located between the display substrate and the color filter substrate.

[0102] It should be noted that the display device can be any product or component with a display function, such as a television, a monitor, a digital photo frame, a mobile phone, a tablet computer, etc., wherein the display device also includes a flexible circuit board, a printed circuit board and a backplane.

[0103] In the display substrate provided in the above embodiment, the first signal line is provided to include a transmission portion and a fan-out portion, the transmission portion being located in the display area and the fan-out portion being located in the irregular peripheral area, thereby extending the first signal line from the display area to the irregular peripheral area. Simultaneously, the scan line is provided to include a first scanning portion and a second scanning portion, the first scanning portion being located in the display area and the second scanning portion being located in the irregular peripheral area, thereby extending the scan line from the display area to the irregular peripheral area. Furthermore, the orthographic projection of the second scanning portion on the base substrate of the display substrate is provided to at least partially overlap with the orthographic projection of the fan-out portion on the base substrate, so that in the irregular peripheral area, the fan-out portion and the second scan line form load compensation for the first signal line and the scan line, thereby effectively reducing the load difference between the scan lines in the irregular area and the scan lines in the normal area of ​​the display substrate, and effectively reducing the load difference between the first signal lines in the irregular area and the first signal lines in the normal area of ​​the display substrate. Therefore, when the display substrate is applied to a display product, a user does not perceive a difference in display brightness between different areas of the display product. Therefore, in the display substrate provided by the above embodiment, by reasonably increasing the length of the fan-out part, the length of the second scanning part, and the overlapping area between the orthographic projection of the second scanning part on the base substrate and the orthographic projection of the fan-out part on the base substrate, capacitance and resistance compensation of the first signal line and the scanning line are achieved, and the load difference between the scanning line in the irregular area and the scanning line in the normal area of ​​the display substrate can be less than 4%, and the load difference between the first signal line in the irregular area and the first signal line in the normal area of ​​the display substrate can be less than 4%, so that the brightness difference will not be visible to the user on a macro scale.

[0104] Therefore, the display device provided by the embodiment of the present disclosure also has the above-mentioned beneficial effects when it includes the above-mentioned display substrate, which will not be described in detail here.

[0105] It should be noted that the signal line extending along the X-direction means that the signal line includes a main portion and a secondary portion connected to the main portion, the main portion is a line, a line segment, or a strip-shaped body, the main portion extends along the X-direction, and the length of the main portion extending along the X-direction is greater than the length of the secondary portion extending along other directions.

[0106] It should be noted that the "same layer" in the embodiment of the present disclosure may refer to a film layer on the same structural layer. Or, for example, a film layer in the same layer may be a film layer formed by using the same film forming process to form a specific pattern, and then patterning the film layer using the same mask through a single composition process to form a layer structure. Depending on the specific pattern, a single composition process may include multiple exposure, development or etching processes, and the specific pattern in the formed layer structure may be continuous or discontinuous. These specific patterns may also be at different heights or have different thicknesses.

[0107] In the various method embodiments of the present disclosure, the serial numbers of the steps cannot be used to limit the order of the steps. For ordinary technicians in this field, without paying any creative work, changes to the order of the steps are also within the scope of protection of the present disclosure.

[0108] It should be noted that the various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences from other embodiments. In particular, the method embodiments are described briefly because they are generally similar to the product embodiments. For relevant parts, refer to the description of the product embodiments.

[0109] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect", "couple" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0110] It will be understood that when an element such as a layer, film, region, or substrate is referred to as being “on” or “under” another element, it can be “directly on” or “under” the other element or intervening elements may be present.

[0111] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0112] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A display substrate, comprising: a display area and a special-shaped peripheral area located around the display area; the display substrate further comprising a first signal line and a scan line, the first signal line including at least a portion extending along a first direction, the scan line including at least a portion extending along a second direction, the first direction intersecting the second direction; At least part of the first signal lines includes a transmission portion and a fan-out portion, the transmission portion is located in the display area, and the fan-out portion is located in the special-shaped peripheral area; At least part of the scanning line includes a first scanning part and a second scanning part, the first scanning part is located in the display area, the second scanning part is located in the special-shaped peripheral area, and the orthographic projection of the second scanning part on the base substrate of the display substrate at least partially overlaps with the orthographic projection of the fan-out part on the base substrate.

2. The display substrate according to claim 1, wherein The second scanning portion includes a scanning main body and at least one scanning protrusion, wherein the scanning main body is coupled to the first scanning portion and each of the scanning protrusions respectively; At least a portion of the scanning main portion extends along the second direction, the scanning protrusion protrudes beyond the scanning main portion along the first direction, and an orthographic projection of the scanning main portion on the base substrate at least partially overlaps with an orthographic projection of the fan-out portion on the base substrate; And / or, an orthographic projection of the scanning protrusion on the base substrate at least partially overlaps with an orthographic projection of the fan-out portion on the base substrate.

3. The display substrate according to claim 2, wherein: The second scanning portion includes a plurality of scanning protrusions sequentially arranged along the second direction, and a width of the scanning protrusions along the second direction is greater than a width of the scanning main body along the first direction.

4. The display substrate according to claim 2, wherein: The line width of the fan-out part is the same as the line width of the transmission part, or the line width of the fan-out part is greater than the line width of the transmission part.

5. The display substrate according to any one of claims 1 to 4, wherein The irregular peripheral area includes a corner area, the corner area includes a transition area and a first compensation area, the transition area is located between the first compensation area and the corner of the display area, and in the first compensation area, the orthographic projection of the second scanning part on the substrate at least partially overlaps with the orthographic projection of the fan-out part on the substrate.

6. The display substrate according to any one of claims 2 to 4, wherein The irregular peripheral area includes a fringe area, which is half-surrounded by the display area; in the fringe area, the orthographic projection of the scanning main body on the base substrate at least partially overlaps with the orthographic projection of the fan-out portion on the base substrate; And / or, an orthographic projection of the scanning protrusion on the base substrate at least partially overlaps with an orthographic projection of the fan-out portion on the base substrate.

7. The display substrate according to claim 6, wherein: The fringe area includes two symmetrically arranged second compensation areas, and the two second compensation areas are arranged along the second direction; in the second compensation areas, the orthographic projection of the scanning main portion on the base substrate at least partially overlaps with the orthographic projection of the fan-out portion on the base substrate; An orthographic projection of the scanning protrusion on the base substrate at least partially overlaps with an orthographic projection of the fan-out portion on the base substrate.

8. The display substrate according to claim 7, wherein: The fringe area further includes two symmetrically arranged third compensation areas, the two third compensation areas being located between the two second compensation areas; in the third compensation areas, the scanning main body extends along a third direction, and the third direction intersects both the first direction and the second direction; In the third compensation area, an orthographic projection of the scanning main portion on the base substrate at least partially overlaps with an orthographic projection of the fan-out portion on the base substrate.

9. The display substrate according to claim 8, wherein: The fringe area further includes a fourth compensation area, and the fourth compensation area is located between the two third compensation areas; The scanning main body portion includes a scanning compensation portion located in the fourth compensation area, and the scanning compensation portion extends along the second direction; The fan-out portion includes a fan-out compensation part located in the fourth compensation area, and the fan-out compensation part adopts a bow-shaped structure. The bow-shaped structure includes a plurality of first fan-out sub-graphics arranged along a first direction, and the first fan-out sub-graphics extend along the second direction. The orthographic projection of the first fan-out sub-graphics on the substrate at least partially overlaps with the orthographic projection of the corresponding scanning compensation part on the substrate; the bow-shaped structure also includes a plurality of second fan-out sub-graphics, and the second fan-out sub-graphics extend along the first direction. Adjacent first fan-out sub-graphics are coupled through corresponding second fan-out sub-graphics.

10. The display substrate according to claim 9, wherein: The line width of the scanning compensation portion is greater than the line width of the first scanning portion.

11. The display substrate according to claim 9, wherein: The scanning compensation portion includes a first side portion and a second side portion oppositely arranged along the first direction; an orthographic projection of at least one of the first side portion and the second side portion on the substrate includes: a first sub-portion and a second sub-portion alternately arranged along the second direction, the second sub-portion extending along the second direction, the extension direction of the first sub-portion being different from the extension direction of the second sub-portion, and adjacent first sub-portions being coupled; The orthographic projection of the first fan-out sub-graph on the substrate at least partially overlaps with the orthographic projection of at least one corresponding first sub-portion on the substrate; and / or the orthographic projection of the second fan-out sub-graph on the substrate at least partially overlaps with the orthographic projection of at least one corresponding first sub-portion on the substrate.

12. The display substrate according to claim 1, wherein The display substrate further includes a common electrode layer, wherein an orthographic projection of the common electrode layer on the base substrate at least partially overlaps with an orthographic projection of the fan-out portion on the base substrate of the display substrate; And / or, an orthographic projection of the common electrode layer on the base substrate at least partially overlaps with an orthographic projection of the second scanning part on the base substrate.

13. The display substrate according to claim 1, wherein The first signal lines include data lines and / or touch signal lines.

14. The display substrate according to claim 1, wherein The display substrate comprises a gate metal layer and a source / drain metal layer, wherein the gate metal layer is located between the source / drain metal layer and the base substrate; The scan line is provided in the same layer and made of the same material as the gate metal layer; and the first signal line is provided in the same layer and made of the same material as the source / drain metal layer.

15. A display device comprising the display substrate according to any one of claims 1 to 14.

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