Display substrate and display device

Abstract

A display substrate (1) and a display device. The display substrate (1) comprises a base substrate (10), and a plurality of gate lines (11) and a plurality of data lines (12) which are arranged on the base substrate (10). The display substrate (1) further comprises a plurality of first electromagnetic components (100) sequentially arranged in a second direction (Y), and a plurality of second electromagnetic components (200) sequentially arranged in a first direction (X). There is an overlap between the orthographic projections of the first electromagnetic components (100) on the base substrate (10) and the orthographic projections of the second electromagnetic components (200) on the base substrate. The first electromagnetic components (100) and the second electromagnetic components (200) are both arranged in layers with the gate lines (11) and the data lines (12).

Description

Display substrate and display device Technical Field

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

[0002] As electronic products mature, the demand for paperless and portable devices is growing stronger. In daily office and study life, heavy paper and books not only impose a physical and weight burden, but also create significant challenges in collecting and accessing data. Replacing paper notebooks with electronic devices is becoming increasingly common, starting with tablets and transitioning to more eye-friendly electronic paper tablets. In 2022, sales of electronic paper tablets in China exceeded one million units, with only half featuring handwriting functionality. These devices offer significant convenience in daily life and work, and represent a market with significant future potential.

[0003] Due to the problems of poor capacitive handwriting accuracy, slow response, and difficult debugging, the main handwriting solution used by electronic paper handwriting tablets is the electromagnetic method. However, the existing electromagnetic solutions are all external, that is, an additional electromagnetic board is attached to the back of the TFT module. This solution not only increases the thickness of the entire device, but also greatly increases the overall cost due to the high price of the external electromagnetic board.

[0004] Summary of the Invention

[0005] The present disclosure aims to solve at least one of the technical problems existing in the prior art and provide a display substrate and a display device.

[0006] An embodiment of the present disclosure provides a display substrate, comprising a base substrate, a plurality of gate lines and a plurality of data lines arranged on the base substrate; wherein the display substrate further comprises a plurality of first electromagnetic assemblies arranged in sequence along a second direction, and a plurality of second electromagnetic assemblies arranged in sequence along a first direction; the orthographic projections of the first electromagnetic assemblies and the second electromagnetic assemblies on the base substrate overlap; wherein,

[0007] The first electromagnetic component and the second electromagnetic component are both arranged in layers with the gate line and the data line.

[0008] The number of the first electromagnetic components and the number of the second electromagnetic components are both multiple; the orthographic projections of any two adjacent first electromagnetic components on the substrate overlap, and define multiple first overlapping areas; the orthographic projections of any two adjacent second electromagnetic components on the substrate overlap, and define multiple second overlapping areas; the first electromagnetic component includes at least one circle of a first electromagnetic signal line; the second electromagnetic component includes at least one circle of a second electromagnetic signal line; for any two adjacent first electromagnetic components, the first electromagnetic signal line of one of them has a first opening that passes through the first overlapping area, and the first opening divides the first electromagnetic signal line into multiple first sub-segments, the first sub-segments arranged sequentially are electrically connected through first switching electrodes, and the first sub-segments and the first switching electrodes are arranged in layers;

[0009] For any two adjacent second electromagnetic components, the second electromagnetic signal line of one of them has a second opening that passes through the second overlapping area, and the second opening divides the second electromagnetic signal line into multiple second sub-segments. The second sub-segments arranged sequentially are electrically connected through second transfer electrodes, and the second sub-segments and the second transfer electrodes are arranged in layers.

[0010] The first switching electrode and the second sub-line segment are arranged in the same layer; and / or the second switching electrode and the first sub-line segment are arranged in the same layer.

[0011] Wherein, the number of the first electromagnetic components is M;

[0012] For the i-th and i+1-th first electromagnetic components, in the first overlapping area defined by the two, the first electromagnetic signal line of the i+1-th first electromagnetic component has the first opening; i ranges from 1 to M-1, and i is a positive integer.

[0013] Wherein, the number of the second electromagnetic components is N;

[0014] For the jth and j+1th second electromagnetic components, in the second overlapping area defined by the two, the second electromagnetic signal line of the j+1th second electromagnetic component has the first opening; j is 1 to N-1, and i is a positive integer.

[0015] Among them, the first electromagnetic component also includes a first lead and a second lead; the first lead is electrically connected to the beginning of the first electromagnetic signal line in the first circle through a third transfer electrode, and the second lead is electrically connected to the end of the last circle of the first electromagnetic signal line; the first lead and the second lead are both arranged on the same layer as the first sub-segment, and the third transfer electrode is on the same layer as the first transfer electrode.

[0016] The first lead and the second lead are led out from the same side of the display substrate and extend to the first fan-out area.

[0017] In which, the second electromagnetic component also includes a third lead and a fourth lead; the third lead is electrically connected to the beginning of the first circle of the second electromagnetic signal line through a fourth transfer electrode, and the fourth lead is electrically connected to the end of the last circle of the second electromagnetic signal line; the third lead and the fourth lead are both arranged on the same layer as the second sub-segment, and the fourth transfer electrode is on the same layer as the second transfer electrode.

[0018] The third lead and the fourth lead are led out from the same side of the display substrate and extend to the first fan-out area.

[0019] The base substrate includes a first surface and a second surface arranged opposite to each other along a thickness direction thereof; the gate lines, the data lines, the first electromagnetic components and the second electromagnetic components are all arranged on the first surface side.

[0020] The first electromagnetic component and the second electromagnetic component are both closer to the base substrate than the gate line and the data line.

[0021] Among them, the one of the first electromagnetic component and the second electromagnetic component that is farther away from the base substrate is provided with a first interlayer insulating layer on the side away from the base substrate; the gate line and the data line are arranged on the side of the first interlayer insulating layer away from the base substrate; the first interlayer insulating layer is made of organic material.

[0022] Wherein, the thickness of the first interlayer insulating layer is 2-3 μm.

[0023] The base substrate includes a first surface and a second surface arranged opposite to each other along its thickness direction; the gate lines and the data lines are both arranged on the first surface side; and the first electromagnetic component and the second electromagnetic component are both arranged on the second surface side.

[0024] Among them, a plurality of first connecting pads are set on the first surface side, and a plurality of second connecting pads are set on the second surface side; the gate line and the data line are respectively connected to the corresponding first connecting pads; the first electromagnetic component and the second electromagnetic group are respectively connected to the corresponding second connecting pads.

[0025] The first electromagnetic component includes at least one circle of first electromagnetic signal line; the first electromagnetic signal line includes a first portion extending in the same direction as the gate line, and a second portion extending in the same direction as the data line.

[0026] The second electromagnetic component includes at least one circle of a second electromagnetic signal line; the second electromagnetic signal line includes a third portion extending in the same direction as the data line, and a fourth portion extending in the same direction as the gate line.

[0027] An embodiment of the present disclosure provides a display device, which includes any of the display substrates described above.

[0028] Wherein, the display device is electronic paper.

[0029] Wherein, the display device further includes an electromagnetic receiving component. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic cross-sectional view of an electronic paper.

[0031] FIG2 is a schematic diagram of an active electromagnetic coil.

[0032] FIG. 3 is a partial top view of the display substrate shown in FIG. 1 .

[0033] FIG. 4 is a cross-sectional view of a display substrate of the electronic paper in FIG. 1 .

[0034] FIG5 is a schematic diagram of a passive electromagnetic coil.

[0035] FIG. 6 is a partial top view of a display substrate according to an embodiment of the present disclosure.

[0036] FIG. 7 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure.

[0037] FIG8 is a schematic diagram of two adjacently arranged first electromagnetic assemblies according to an embodiment of the present disclosure.

[0038] FIG9 is a schematic diagram of a first sub-segment portion of a first electromagnetic assembly according to an embodiment of the present disclosure.

[0039] FIG10 is a schematic diagram showing the connection between the first sub-segment of the first electromagnetic component and the first switching electrode according to an embodiment of the present disclosure.

[0040] FIG11 is a cross-sectional view showing the connection between the first sub-segment of the first electromagnetic assembly and the first switching electrode according to an embodiment of the present disclosure.

[0041] FIG. 12 is a schematic diagram of a first electromagnetic assembly according to an embodiment of the present disclosure.

[0042] FIG13 is a schematic diagram of two adjacently arranged second electromagnetic assemblies according to an embodiment of the present disclosure.

[0043] FIG14 is a schematic diagram of a second sub-segment portion of a second electromagnetic assembly according to an embodiment of the present disclosure.

[0044] FIG15 is a schematic diagram showing the connection between the second sub-segment of the second electromagnetic component and the second switching electrode according to an embodiment of the present disclosure.

[0045] FIG16 is a cross-sectional view showing the connection between the second sub-segment of the second electromagnetic assembly and the second switching electrode according to an embodiment of the present disclosure.

[0046] FIG. 17 is a schematic diagram of a second electromagnetic assembly according to an embodiment of the present disclosure.

[0047] FIG. 18 is a cross-sectional view of another display substrate according to an embodiment of the present disclosure.

[0048] FIG19 is a schematic diagram of an electronic paper according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0050] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one", "an" or "the" do not indicate a quantity limitation, but rather indicate the existence of at least one. 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" 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.

[0051] Before introducing the embodiments of the present disclosure, it should be noted that in the embodiments of the present disclosure, only the extending direction of the gate lines is the first direction and the extending direction of the data lines is the second direction is used as an example for description.

[0052] Figure 1 is a schematic cross-sectional view of an electronic paper. As shown in Figure 1 , a typical electronic paper comprises a display substrate 1 and a cover plate 3 disposed opposite each other, and an electrophoretic layer 2 disposed between the display substrate 1 and the cover plate 3. The display substrate 1 comprises a base substrate 10, a plurality of gate lines 11 and a plurality of data lines 12 disposed on the base substrate 10. The gate lines 11 and the data lines 12 intersect to define a plurality of pixel units, each of which comprises a thin film transistor 14, a pixel electrode 16, and a common electrode 15. The gate of the thin film transistor is connected to the gate line 11, the source is connected to the data line 12, and the drain is connected to the pixel electrode. The electrophoretic layer 2 comprises a plurality of electrophoretic capsules corresponding to the pixel units. Each electrophoretic capsule may comprise a capsule body, and electrophoretic particles and charged particles within the capsule body. The charged particles may comprise black particles, white particles, and colored particles, etc.

[0053] By writing a scanning signal to the gate line 11, the thin film transistor is turned on, and the data voltage written on the data line 12 is loaded to the pixel electrode. The pixel electrode and the common electrode form an electric field, driving the charged particles in the electrophoretic capsule to move in the electrophoretic fluid to realize the display of electronic paper.

[0054] Figure 2 is a schematic diagram of an active electromagnetic coil; Figure 3 is a partial top view of the display substrate 1 shown in Figure 1; and Figure 4 is a cross-sectional view of the display substrate 1 of the electronic paper of Figure 1. As shown in Figures 2-4, based on the above-described electronic paper, an exemplary electronic paper with integrated active electromagnetic handwriting function is also provided. The display substrate 1 of this electronic paper integrates electromagnetic signal lines. The electromagnetic signal lines include a first electromagnetic signal line 21 extending along a first direction X and disposed on the same layer as the gate, and a second electromagnetic signal line 22 extending along a second direction Y and disposed on the same layer as the data line 12. It should be noted that common electrode lines are disposed in the peripheral area of ​​the display substrate 1. One end of each first electromagnetic signal line 21 is connected to the common electrode line, and together with the common electrode line, they form a first electromagnetic assembly 100. The other end of each first electromagnetic signal line 21 is connected to its corresponding first lead 31, and the first lead 301 extends to the fan-out area. Similarly, one end of each second electromagnetic signal line 22 is connected to the common electrode line to form a second electromagnetic assembly 200 ; the other end of each second electromagnetic signal line 22 is connected to the corresponding second lead line 302 , and the second lead line 302 extends to the fan-out area.

[0055] 4 , in the embodiment of the present disclosure, a bottom-gate thin-film transistor is used as an example. The display substrate 1 includes a gate metal layer, a gate insulating layer 20, a semiconductor active layer (not shown), a source / drain metal layer, a buffer layer 30, a first passivation layer 40, a common electrode 15, a second passivation layer 50, and a pixel electrode 16, arranged in sequence away from the base substrate 10. The gate metal layer includes a gate line 11 and a first electromagnetic signal line 21; the source / drain metal layer includes a data line 12, a gate signal lead line 13, and a second electromagnetic signal line 22.

[0056] The first electromagnetic signal line 21 of this electronic paper is arranged in the same layer as the gate line 11, and the second electromagnetic signal line 22 is arranged in the same layer as the data line 12. Therefore, the existing film layer and mask can be used to realize the electromagnetic handwriting function without adding additional masks, and the film layer structure is consistent with conventional products; but because the same metal film layer as the display signal line is used, the routing space is subject to certain restrictions, and there is no room for further widening of the electromagnetic signal line in the pixel. In order to meet the impedance requirements, the peripheral electromagnetic signal line needs to be widened, which leads to the need to increase the frame; on the other hand, since the active electromagnetic pen transmits signals with the pen, the electromagnetic coil only receives signals to identify the point and respond, so the electromagnetic coil of the electromagnetic board is The impedance requirement is low, that is, a larger impedance can also enable the coil to achieve sufficient magnetic flux and induced electromotive force to achieve recognition and response; for the passive electromagnetic pen, the electromagnetic coil on the electromagnetic board transmits the signal, and the electromagnetic pen receives the change in magnetic flux to charge the inductive capacitor. After it is fully charged, it transmits the signal again and feeds back to the coil of the electromagnetic board to receive the signal. Therefore, passive electromagnetic handwriting has relatively strict requirements on the number and resistance of coils on the electromagnetic board. The more turns of the electromagnetic coil and the smaller the resistance, the greater the magnetic flux and induced electromotive force achieved, which are sufficient to support the signal transmission and feedback process; therefore, due to the number and resistance of the electromagnetic coils, this solution can only realize active electromagnetic handwriting, not passive electromagnetic handwriting. Passive electromagnetic handwriting has more stringent requirements on the impedance of the electromagnetic signal, so the solution in Figure 2 can only realize active electromagnetic handwriting. To meet the development trend and demand for narrow bezels in products, and to avoid the inconvenience of portability caused by the need for a battery structure unit in an active stylus, an electronic paper with an integrated passive electromagnetic handwriting function is proposed. FIG5 is a schematic diagram of a passive electromagnetic coil. As shown in FIG5 , the passive electromagnetic requires the electromagnetic coil to transmit a signal and then receive a signal fed back by the pen. Due to the loss of electromotive force in this process, sufficient magnetic flux and induced electromotive force are required to achieve this. Based on the principle that the more turns, the greater the magnetic flux, the greater the induced electromotive force, a single coil needs to be wound around multiple times to achieve the induced electromotive force required by the passive electromagnetic. This results in longer wiring and makes it more difficult to meet impedance requirements. Typically, the impedance requirement for the electromagnetic coil of the passive electromagnetic is about several hundred ohms.

[0057] In response to the above problems, the embodiments of the present disclosure provide the following technical solutions.

[0058] FIG6 is a partial top view of a display substrate 1 according to an embodiment of the present disclosure; FIG7 is a cross-sectional view of a display substrate 1 according to an embodiment of the present disclosure; as shown in FIG5-7, an embodiment of the present disclosure provides a display substrate 1, which includes a base substrate 10, a plurality of gate lines 11, a plurality of data lines 12, a plurality of first electromagnetic assemblies 100, and a plurality of second electromagnetic assemblies 200 disposed on the base substrate 10. The plurality of first electromagnetic assemblies 100 are sequentially disposed along the second direction Y, and the plurality of second electromagnetic assemblies 200 are sequentially disposed along the first direction X. The orthographic projections of the first electromagnetic assemblies 100 and the second electromagnetic assemblies 200 on the base substrate 10 overlap. In particular, in this example, the first electromagnetic assemblies 100 and the second electromagnetic assemblies 200 are both layered with the gate lines 11 and the data lines 12. That is to say, in the embodiment of the present disclosure, the first electromagnetic component 100 and the second electromagnetic component 200 are located on different layers from the display signal lines on the display substrate 1. In this case, the line width of the electromagnetic signal lines of the first electromagnetic component 100 and the second electromagnetic component 200 can be increased to meet the impedance requirements without occupying the space of the original display signal lines. This can achieve a narrow bezel of the product while avoiding affecting the actual signal drive.

[0059] It should be noted that the first electromagnetic assembly 100 in the embodiment of the present disclosure includes at least one turn of the first electromagnetic signal line 21, and the second electromagnetic assembly 200 includes at least one turn of the second electromagnetic signal line 22. In the embodiment of the present disclosure, only the first electromagnetic assembly 100 including multiple turns of the first electromagnetic signal line 21 and the second electromagnetic assembly 200 including multiple turns of the second electromagnetic signal line 22 are used as an example.

[0060] FIG8 is a schematic diagram of two adjacently arranged first electromagnetic assemblies 100 according to an embodiment of the present disclosure; FIG9 is a schematic diagram of a first sub-segment 101 of the first electromagnetic assembly 100 according to an embodiment of the present disclosure; FIG10 is a schematic diagram of the connection between the first sub-segment 101 of the first electromagnetic assembly 100 and the first transfer electrode 103 according to an embodiment of the present disclosure; FIG11 is a cross-sectional view of the connection between the first sub-segment 101 of the first electromagnetic assembly 100 and the first transfer electrode 103 according to an embodiment of the present disclosure; FIG12 is a schematic diagram of the first electromagnetic assembly 100 according to an embodiment of the present disclosure; FIG13 is a schematic diagram of two adjacently arranged second electromagnetic assemblies 200 according to an embodiment of the present disclosure; FIG14 is a schematic diagram of a second sub-segment 201 of the second electromagnetic assembly 200 according to an embodiment of the present disclosure; FIG15 is a schematic diagram of the connection between the second sub-segment 201 of the second electromagnetic assembly 200 and the second transfer electrode 203 according to an embodiment of the present disclosure; FIG16 is a cross-sectional view of the connection between the second sub-segment 201 of the second electromagnetic assembly 200 and the second transfer electrode 203 according to an embodiment of the present disclosure; and FIG17 is a schematic diagram of the second electromagnetic assembly 200 according to an embodiment of the present disclosure.

[0061] In some examples, as shown in Figures 5, 8-17, the first electromagnetic assembly 100 includes multiple turns of a first electromagnetic signal line 21, and the second electromagnetic assembly 200 includes multiple turns of a second electromagnetic signal line 22. The orthographic projections of any two adjacent first electromagnetic assemblies 100 on the substrate 10 overlap, defining multiple first overlapping regions Q1; the orthographic projections of any two adjacent second electromagnetic assemblies 200 on the substrate 10 overlap, defining multiple second overlapping regions Q2. This ensures full screen coverage of the electromagnetic signal lines.

[0062] For any two adjacent first electromagnetic assemblies 100, the first electromagnetic signal line 21 of one of them has a first opening 102 that passes through the first overlapping region Q1. The first opening 102 divides the first electromagnetic signal line 21 into a plurality of first sub-segments 101. The sequentially arranged first sub-segments 101 are electrically connected via first transition electrodes 103, and the first transition electrodes 103 are layered with the first sub-segments 101. This arrangement prevents short circuits between adjacent first electromagnetic assemblies 100.

[0063] For example, the number of first electromagnetic assemblies 100 is M. As shown in Figures 8-11, for the i-th and i+1-th first electromagnetic assemblies 100, in the first overlapping region Q1 defined therebetween, the first electromagnetic signal line 21 of the i+1-th first electromagnetic assembly 100 has a first opening 102; i ranges from 1 to M-1, and i is a positive integer. Specifically, taking each circle of the first electromagnetic signal line 21 as an example, the lower left corner of the i-th first electromagnetic component 100 overlaps with the orthographic projection of the upper left corner of the i+1-th first electromagnetic component 100 on the base substrate 10, and the lower right corner of the i-th first electromagnetic component 100 overlaps with the orthographic projection of the upper right corner of the i+1-th first electromagnetic component 100 on the base substrate 10, defining two first overlapping areas Q1, one on the left and one on the right; at this time, each circle of the first electromagnetic signal line 21 of the i+1-th first electromagnetic component 100 has two first openings 102 respectively arranged in the two first overlapping areas Q1, dividing the first electromagnetic signal line 21 into multiple first sub-segments 101, and the sequentially arranged first sub-segments 101 are connected by first switching electrodes 103, and the first switching electrodes 103 and the first sub-segments 101 are arranged in layers. In this case, each first electromagnetic signal line 21 of the first first electromagnetic assembly 100 does not have the first opening 102 and can be disposed on the same layer as the first sub-line segments 101 of other first electromagnetic assemblies 100 .

[0064] For any two adjacent second electromagnetic assemblies 200, the second electromagnetic signal line 22 of one of them has a second opening 202 that passes through the second overlapping region Q2. The second opening 202 divides the second electromagnetic signal line 22 into a plurality of second sub-segments 201. The sequentially arranged second sub-segments 201 are electrically connected via second transition electrodes 203, and the second transition electrodes 203 are layered with the second sub-segments 201. This arrangement prevents short circuits between adjacent second electromagnetic assemblies 200.

[0065] For example, the number of the second electromagnetic components 200 is N. As shown in FIG13-16 , for the j-th and j+1-th second electromagnetic components 200, in the second overlapping region Q2 defined therebetween, the second electromagnetic signal line of the j+1-th second electromagnetic component 200 has the n-th opening. j ranges from 1 to N-1, and i is a positive integer. Specifically, taking each circle of the second electromagnetic signal line 22 as an example, the upper right corner of the j-th second electromagnetic component 200 overlaps with the orthographic projection of the upper left corner of the j+1-th second electromagnetic component 200 on the base substrate 10, and the lower right corner of the j-th first electromagnetic component 100 overlaps with the orthographic projection of the lower left corner of the j+1-th second electromagnetic component 200 on the base substrate 10, defining two second overlapping areas Q2, one above and one below; at this time, each circle of the second electromagnetic signal line 22 of the j+1-th second electromagnetic component 200 has two second openings 202 respectively arranged in the two second overlapping areas Q2, dividing the second electromagnetic signal line 22 into multiple second sub-segments 201, and the sequentially arranged second sub-segments 201 are connected by second switching electrodes 203, and the second switching electrodes 203 and the second sub-segments 201 are arranged in layers. In this case, each second electromagnetic signal line 22 of the first second electromagnetic assembly 200 does not have the first opening 102 and can be disposed on the same layer as the second sub-line segments 201 of other second electromagnetic assemblies 200 .

[0066] Furthermore, the first transfer electrode 103 can be provided in the same layer as the second sub-segment 201. Similarly, the second transfer electrode 203 can be provided in the same layer as the first sub-segment 101. In other words, the first electromagnetic assembly 100 and the second electromagnetic assembly 200 can be fabricated by fabricating two conductive layers. This arrangement enables a thinner and lighter display substrate 1. It should be noted that an interlayer insulating layer 60 is required between the two conductive layers.

[0067] Furthermore, as shown in FIG12 , the first electromagnetic assembly 100 includes not only multiple turns of the first electromagnetic signal line 21, but also a first lead 301 and a second lead 302. The first lead 301 is electrically connected to the beginning of the first turn of the first electromagnetic signal line 21 via the third transfer electrode 104, and the second lead 302 is electrically connected to the end of the last turn of the first electromagnetic signal line 21. The first lead 301 and the second lead 302 are both arranged on the same layer as the first sub-segment 101, and the third transfer electrode 104 is arranged on the same layer as the first transfer electrode 103. In this case, the number of film layers is not increased, allowing for a thinner and lighter design of the display substrate 1.

[0068] Furthermore, the first lead 301 and the second lead 302 are led out from the same side of the display substrate 1 and extend to the first fan-out region. It should be noted that connection pads are provided in the first fan-out region, and the first and second leads 301, 302 are connected to the connection pads in a one-to-one correspondence. The electromagnetic driver chip is bonded to the connection pads, thereby achieving connection between the electromagnetic driver chip and the first and second leads 301, 302.

[0069] Similarly, as shown in FIG17 , the second electromagnetic assembly 200 of the disclosed embodiment includes not only multiple turns of the second electromagnetic signal line 22, but also a third lead 303 and a fourth lead 304. The third lead 303 is electrically connected to the beginning of the first turn of the second electromagnetic signal line 22 via the fourth transfer electrode 204, and the fourth lead 304 is electrically connected to the end of the last turn of the second electromagnetic signal line 22. The third lead 303 and the fourth lead 304 are both arranged on the same layer as the second sub-segment 201, and the fourth transfer electrode 204 is arranged on the same layer as the second transfer electrode 203. In this case, the number of film layers is not increased, allowing for a thinner and lighter design of the display substrate 1.

[0070] Furthermore, the third lead 303 and the fourth lead 304 are led out from the same side of the display substrate 1 and extend to the first fan-out region. It should be noted that connection pads are provided in the first fan-out region, and the third lead 303 and the fourth lead 304 are connected to the connection pads in a one-to-one correspondence. The electromagnetic driver chip is bonded to the connection pads, thereby achieving connection between the electromagnetic driver chip and the first lead 301 and the second lead 302.

[0071] In some examples, the base substrate 10 in the disclosed embodiments includes a first surface and a second surface disposed opposite each other along its thickness direction; the gate lines 11 and the data lines 12 are disposed on the first surface side of the base substrate 10, and the first electromagnetic assembly 100 and the second electromagnetic assembly 200 can both be disposed on the first surface side or on the second surface side. The following describes two scenarios, where the first electromagnetic assembly 100 and the second electromagnetic assembly 200 are both disposed on the first surface side and the second surface side, respectively.

[0072] In the first example, both the first electromagnetic assembly 100 and the second electromagnetic assembly 200 are disposed on the first surface side of the substrate 10, specifically on the side of the substrate 10 closest to the gate line 11 and data line 12. Figure 7 illustrates an example where the primary portion of the first electromagnetic assembly 100 (the first sub-segment 101) is closer to the substrate 10 than the primary portion of the second electromagnetic assembly 200 (the second sub-segment 201), and the gate line 11 is closer to the substrate 10 than the data line 12. A first interlayer insulating layer 70 is disposed between the layer containing the gate line 11 and the layer containing the second electromagnetic assembly 200. This first interlayer insulating layer 70 can be a silicon nitride insulating layer with a thickness of no greater than 1 μm. To prevent crosstalk between signals transmitted by display signal lines such as the gate line 11 and data line 12 and the electromagnetic signals transmitted by the first and second electromagnetic assemblies 100 and 200, the first interlayer insulating layer 70 is preferably a thicker planarizing layer made of an organic material, specifically approximately 2 to 3 μm thick. The planarization layer made of organic material not only has a small dielectric constant, but also has a flat surface that facilitates the formation of subsequent display signal lines.

[0073] Second Example: Figure 18 is a cross-sectional view of another display substrate 1 according to an embodiment of the present disclosure. As shown in Figure 18, both the first electromagnetic assembly 100 and the second electromagnetic assembly 200 are disposed on the second surface of the base substrate 10. That is, the first and second electromagnetic assemblies 100 and 200 are separated from the display signal lines by the base substrate 10. Since the first and second electromagnetic assemblies 100 and 200 are located on the upper and lower surfaces of the base substrate 10, and display elements such as pixel units on the base substrate 10, the space occupied by the display elements on the display substrate 1 is not affected, and no additional coupling capacitance is introduced. Furthermore, the first and second electromagnetic signal lines 21 and 22 do not need to be formed on the same film surface as the display signal lines, and the frame specifications of the display substrate 1 are not affected. Specifically, the base substrate 10 is typically glass-based, which blocks the display signal lines and the electromagnetic signal lines, minimizing interference between the two. Compared to the first example, the glass base provides a superior barrier effect, eliminating the need for a thicker planarization layer to shield the signal lines.

[0074] Furthermore, since the first electromagnetic assembly 100 and the second electromagnetic assembly 200 are disposed on the second surface, the bonding between the first electromagnetic assembly 100 and the second electromagnetic assembly 200 and the electromagnetic driver chip can be completed on the second surface of the base substrate 10. The display driver chip bonded to the display signal line is located on the first surface of the base substrate 10.

[0075] The present disclosure also provides a display device with integrated electromagnetic handwriting functionality, specifically an electronic paper display device, comprising any of the aforementioned display substrates 1. The display device may also include the aforementioned cover plate 3 and electrophoretic layer 2. The display substrate 1 includes a base substrate 10 and a drive circuit layer 300 formed thereon.

[0076] Furthermore, the display device of the embodiment of the present disclosure may further include an electromagnetic receiving component 4 , which may specifically be an electromagnetic pen.

[0077] FIG19 is a schematic diagram of an electronic paper according to an embodiment of the present disclosure. As shown in FIG19 , the electromagnetic signal line is disposed on the second surface side of the base substrate 10, and the corresponding structure of the electronic paper is disposed on the first surface side of the base substrate 10. When the stylus is in use, an oscillation circuit is present on both the electromagnetic pen and the display substrate 1. When the oscillation circuit of the display substrate 1 transmits a signal, the oscillation circuit within the electromagnetic pen stores the signal in a capacitor. Subsequently, the oscillation circuit of the display substrate 1 stops transmitting the signal. When the capacitor within the electromagnetic pen is fully stored, the signal is transmitted. The oscillation circuit on the display substrate 1 recognizes the change in magnetic flux to identify and respond to the point. The operating frequency of the electromagnetic signal is typically several hundred kHz, which is significantly different from the display frequency of the display device, which is tens to hundreds of Hz. Therefore, this does not cause mutual interference between the signals. Furthermore, as previously mentioned, the glass-based barrier between the electromagnetic signal line and the display signal line effectively prevents coupling and crosstalk between the electromagnetic signal and the display signal.

[0078] It is understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present disclosure, and the present disclosure is not limited thereto. Those skilled in the art may make various modifications and improvements without departing from the spirit and substance of the present disclosure, and such modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A display substrate, which includes a substrate, and a plurality of gate lines and a plurality of data lines disposed on the substrate; Wherein, the display substrate further includes a plurality of first electromagnetic components sequentially arranged along a second direction, and a plurality of second electromagnetic components sequentially arranged along a first direction; a positive projection of the first electromagnetic components on the substrate overlaps with a positive projection of the second electromagnetic components on the substrate; wherein, the first electromagnetic components and the second electromagnetic components are both arranged in a layered manner with respect to the gate lines and the data lines.

2. The display substrate according to claim 1, Wherein, the number of both the first electromagnetic components and the second electromagnetic components is plural; a positive projection of any two adjacent first electromagnetic components on the substrate overlaps, and defines a plurality of first overlapping regions; a positive projection of any two adjacent second electromagnetic components on the substrate overlaps, and defines a plurality of second overlapping regions; the first electromagnetic component includes at least one turn of first electromagnetic signal lines; the second electromagnetic component includes at least one turn of second electromagnetic signal lines; for any two adjacent first electromagnetic components, one of the first electromagnetic signal lines has a first opening penetrating through the first overlapping region, the first opening divides the first electromagnetic signal line into a plurality of first sub-segments, the sequentially arranged first sub-segments are electrically connected through a first transfer electrode, and the first sub-segments and the first transfer electrode are arranged in a layered manner; for any two adjacent second electromagnetic components, one of the second electromagnetic signal lines has a second opening penetrating through the second overlapping region, the second opening divides the second electromagnetic signal line into a plurality of second sub-segments, the sequentially arranged second sub-segments are electrically connected through a second transfer electrode, and the second sub-segments and the second transfer electrode are arranged in a layered manner.

3. The display substrate according to claim 2, Wherein, the first transfer electrode is arranged on the same layer as the second sub-segments; and / or the second transfer electrode is arranged on the same layer as the first sub-segments.

4. The display substrate according to claim 2, Wherein, the number of the first electromagnetic components is M; For the i-th and the (i + 1)-th first electromagnetic components, in the first overlapping region defined by the two, the first electromagnetic signal line of the (i + 1)-th first electromagnetic component has the first opening; i takes values from 1 to M - 1, and i is a positive integer.

5. The display substrate according to claim 2, Wherein, the number of the second electromagnetic components is N; For the j-th and the (j + 1)-th second electromagnetic components, in the second overlapping region defined by the two, the second electromagnetic signal line of the (j + 1)-th second electromagnetic component has the second opening; j takes values from 1 to N - 1, and i is a positive integer.

6. The display substrate according to claim 2, Wherein, The first electromagnetic component further includes a first lead and a second lead; the first lead is electrically connected to the head end of the first loop of the first electromagnetic signal lines through a third transfer electrode, and the second lead is electrically connected to the tail end of the last loop of the first electromagnetic signal lines; the first lead and the second lead are arranged on the same layer as the first sub-segment, and the third transfer electrode is on the same layer as the first transfer electrode.

7. The display substrate according to claim 6, wherein, the first lead and the second lead are led out from the same side of the display substrate and extend to the first fan-out region.

8. The display substrate according to claim 2, wherein, the second electromagnetic component further includes a third lead and a fourth lead; the third lead is electrically connected to the head end of the first loop of the second electromagnetic signal lines through a fourth transfer electrode, and the fourth lead is electrically connected to the tail end of the last loop of the second electromagnetic signal lines; the third lead and the fourth lead are arranged on the same layer as the second sub-segment, and the fourth transfer electrode is on the same layer as the second transfer electrode.

9. The display substrate according to claim 8, wherein, the third lead and the fourth lead are led out from the same side of the display substrate and extend to the first fan-out region.

10. The display substrate according to any one of claims 1-9, wherein, the substrate includes a first surface and a second surface oppositely arranged along its thickness direction; the gate lines, the data lines, the first electromagnetic component and the second electromagnetic component are all arranged on the first surface side.

11. The display substrate according to claim 10, wherein, the first electromagnetic component and the second electromagnetic component are closer to the substrate than the gate lines and the data lines.

12. The display substrate according to claim 11, wherein, a first interlayer insulating layer is provided on the side of the first electromagnetic component and the second electromagnetic component that is farther from the substrate and facing away from the substrate; the gate lines and the data lines are arranged on the side of the first interlayer insulating layer facing away from the substrate; the first interlayer insulating layer is made of an organic material.

13. The display substrate according to claim 12, wherein, the thickness of the first interlayer insulating layer is 2-3 μm.

14. The display substrate according to any one of claims 1-9, wherein, the substrate includes a first surface and a second surface oppositely arranged along its thickness direction; the gate lines and the data lines are both arranged on the first surface side; the first electromagnetic component and the second electromagnetic component are both arranged on the second surface side.

15. The display substrate according to claim 14, wherein, a plurality of first connection pads are provided on the first surface side, and a plurality of second connection pads are provided on the second surface side; the gate lines and the data lines are respectively connected to the correspondingly arranged first connection pads; the first electromagnetic component and the second electromagnetic component are respectively connected to the correspondingly arranged second connection pads.

16. The display substrate according to any one of claims 1-9, wherein, The first electromagnetic component includes at least one turn of first electromagnetic signal lines; the first electromagnetic signal lines include a first portion having the same extending direction as the gate lines and a second portion having the same extending direction as the data lines.

17. The display substrate according to any one of claims 1-9, wherein, the second electromagnetic component includes at least one turn of second electromagnetic signal lines; the second electromagnetic signal lines include a third portion having the same extending direction as the data lines and a fourth portion having the same extending direction as the gate lines.

18. A display device, which includes the display substrate according to any one of claims 1-17.

19. The display device according to claim 18, wherein, the display device is an electronic paper.

20. The display device according to claim 18, wherein, it further includes an electromagnetic receiving component.

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