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

TECHNICAL FIELD

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

[0002] As electronic products are increasingly developed, a paperless and portable electronic product is increasingly demanded. In the daily office work and study, the burden of objective space and weight is brought by heavy paper and books, and the great trouble is brought by the collection and the consultation of data and information. The electronic product is commonly used as a notebook instead of the existing paper, and gradually transitions to a handwriting pad of an electronic paper, which is a more eyeprotecting mode, at the present stage from an initial tablet computer. In 2022, the sales volume of an electronic paper tablet exceeds one million in China, and about half have a handwriting function, which brings a great convenience to the daily life and office work and is a market with great potential in the future.

[0003] Due to the problems of a poor handwriting precision, a slow response, a difficult debugging and the like of a capacitive handwriting pad of the electronic paper, the handwriting pad of the electronic paper mainly adopts an electromagnetic handwriting mode, which is currently an externally-hung type. That is, an electromagnetic board is additionally attached to a back surface of a TFT module, so that the whole thickness is increased, and the whole cost is greatly increased due to the externally-hung electromagnetic board being expensive. SUMMARY

[0004] The present disclosure is directed to at least one of the problems in the prior art, and provides a display substrate and a display apparatus.

[0005] An embodiment of the present disclosure provides a display substrate, including a base substrate, a plurality of gate lines and a plurality of data lines on the base substrate; 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, and an orthographic projection of the plurality of first electromagnetic components on the base substrate overlaps with an orthographic projection of the plurality of second electromagnetic components on the base substrate; and the plurality of first electromagnetic components and the plurality of second electromagnetic components are in different layers from the plurality of gate lines and the plurality of data lines.

[0006] In some embodiments, orthographic projections of any two adjacent first electromagnetic components on the base substrate overlap with each other, to define a plurality of first overlapping regions, and orthographic projections of any two adjacent second electromagnetic components on the base substrate overlap with each other, to define a plurality of second overlapping regions; each first electromagnetic component includes at least one turn of a first electromagnetic signal line, and each second electromagnetic component includes at least one turn of a second electromagnetic signal line; each first electromagnetic signal line of one of any two adjacent first electromagnetic components has a first opening extending through a corresponding first overlapping region, the first opening divides the first electromagnetic signal line into a plurality of first sub-segments, the plurality of first sub-segments are sequentially arranged and electrically connected through first adapter electrodes, and the plurality of first subsegments are in a different layer from the first adapter electrodes; and each second electromagnetic signal line of one of any two adjacent second electromagnetic components has a second opening extending through a corresponding second overlapping region, the second opening divides the second electromagnetic signal line into a plurality of second sub-segments, the plurality of second sub-segments are sequentially arranged and electrically connected through second adapter electrodes, and the plurality of second sub-segments are in a different layer from the second adapter electrodes.

[0007] In some embodiments, the first adapter electrodes are in a same layer as the plurality of second sub-segments; and / or the second adapter electrodes are in a same layer as the plurality of first sub-segments.

[0008] In some embodiments, the display substrate includes M first electromagnetic components; and an ith first electromagnetic component and an (i+l)th first 2 electromagnetic component of the plurality of first electromagnetic components define a first overlapping region where each first electromagnetic signal line of the (i+l)th first electromagnetic component has a first opening; i is in a range from 1 to M-l, and i is a positive integer.

[0009] In some embodiments, the display substrate includes N second electromagnetic components; and a jth second electromagnetic component and a (j+1 )th second electromagnetic component of the plurality of second electromagnetic components define a second overlapping region where each second electromagnetic signal line of the (j+1 )th second electromagnetic component has a second opening; j is in a range from 1 to N-l, and j is a positive integer.

[0010] In some embodiments, each first electromagnetic component further includes a first lead and a second lead, the first lead is electrically connected to a head end of a first turn of the first electromagnetic signal line through a third adapter electrode, and the second lead is electrically connected to a tail end of a last turn of the first electromagnetic signal line; and the first lead and the second lead are in the same layer as the plurality of first sub-segments, and the third adapter electrode is in the same layer as the first adapter electrodes.

[0011] In some embodiments, the first lead and the second lead are led out from a same side of the display substrate and extend to a first fan-out region.

[0012] In some embodiments, each second electromagnetic component further includes a third lead and a fourth lead, the third lead is electrically connected to a head end of a first turn of the second electromagnetic signal line through a fourth adapter electrode, and the fourth lead is electrically connected to a tail end of a last turn of the second electromagnetic signal line; and the third lead and the fourth lead are in the same layer as the plurality of second sub-segments, and the fourth adapter electrode is in the same layer as the second adapter electrodes.

[0013] In some embodiments, the third lead and the fourth lead are led out from a same side of the display substrate and extend to a first fan-out region.

[0014] In some embodiments, the base substrate includes a first surface and a second surface opposite to each other in a thickness direction of the base substrate, and the plurality of gate lines, the plurality of data lines, the plurality of first electromagnetic components, and the plurality of second electromagnetic components are on the first surface.

[0015] In some embodiments, the plurality of first electromagnetic components and the 3 plurality of second electromagnetic components are closer to the base substrate than the plurality of gate lines and the plurality of data lines.

[0016] In some embodiments, the display substrate further includes a first interlayer insulating layer on a side of ones of the plurality of first electromagnetic components and the plurality of second electromagnetic components, that are further from the base substrate, away from the base substrate; and the plurality of gate lines and the plurality of data lines are on a side of the first interlayer insulating layer away from the base substrate, and the first interlayer insulating layer is made of organic materials.

[0017] In some embodiments, the first interlayer insulating layer has a thickness in a range from 2 pm to 3 pm.

[0018] In some embodiments, the base substrate includes a first surface and a second surface opposite to each other in a thickness direction of the base substrate, the plurality of gate lines and the plurality of data lines are on the first surface, and the plurality of first electromagnetic components and the plurality of second electromagnetic components are on the second surface.

[0019] In some embodiments, the display substrate further includes a plurality of first connection pads on the first surface and a plurality of second connection pads on the second surface, the plurality of gate lines and the plurality of data lines are connected to corresponding first connection pads, respectively, and the plurality of first electromagnetic components and the plurality of second electromagnetic components are connected to corresponding second connection pads, respectively.

[0020] In some embodiments, each first electromagnetic component includes at least one turn of a first electromagnetic signal line, and the first electromagnetic signal line includes a first portion with an extending direction which is the same as extending directions of the plurality of gate lines and a second portion with an extending direction which is the same as extending directions of the plurality of data lines.

[0021] In some embodiments, each second electromagnetic component includes at least one turn of a second electromagnetic signal line, and the second electromagnetic signal line includes a third portion with an extending direction which is the same as extending directions of the plurality of data lines and a fourth portion with an extending direction which is the same as extending directions of the plurality of gate lines.

[0022] An embodiment of the present disclosure provides a display apparatus, which includes the display substrate in any one of the above embodiments.

[0023] In some embodiments, the display apparatus is an electronic paper.

[0024] In some embodiments, the display apparatus further includes an electromagnetic receiving component. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 is a schematic cross-sectional view of an electronic paper.

[0026] Fig. 2 is a schematic diagram of an active electromagnetic coil.

[0027] Fig. 3 is a top view of a part of a display substrate shown in Fig. 1.

[0028] Fig. 4 is a cross-sectional view of a display substrate of the electronic paper in Fig.

[0029] Fig. 5 is a schematic diagram of a passive electromagnetic coil.

[0030] Fig. 6 is a top view of a part of a display substrate according to an embodiment of the present disclosure.

[0031] Fig. 7 is a cross-sectional view of a display substrate according to an embodiment of the present disclosure.

[0032] Fig. 8 is a schematic diagram of two first electromagnetic components arranged adjacent to each other according to an embodiment of the present disclosure.

[0033] Fig. 9 is a schematic diagram of a part of first sub-segments of a first electromagnetic component according to an embodiment of the present disclosure.

[0034] Fig. 10 is a schematic diagram illustrating connection between first sub-segments and first adapter electrodes of a first electromagnetic component according to an embodiment of the present disclosure.

[0035] Fig. 11 is a cross-sectional view illustrating how to connect two first sub-segments of a first electromagnetic component with a first adapter electrode according to an embodiment of the present disclosure.

[0036] Fig. 12 is a schematic diagram of a first electromagnetic component according to an embodiment of the present disclosure.

[0037] Fig. 13 is a schematic diagram of two second electromagnetic components arranged adjacent to each other according to an embodiment of the present disclosure.

[0038] Fig. 14 is a schematic diagram of a part of a second sub-segment of a second electromagnetic component according to an embodiment of the present disclosure.

[0039] Fig. 15 is a schematic diagram of a connection of a second sub-segment of a second electromagnetic component with a second adapter electrode according to an embodiment of the present disclosure.

[0040] Fig. 16 is a cross-sectional view of a connection of a second sub-segment of a second electromagnetic component with a second adapter electrode according to an embodiment of the present disclosure.

[0041] Fig. 17 is a schematic diagram of a second electromagnetic component according to an embodiment of the present disclosure.

[0042] Fig. 18 is another cross-sectional view of a display substrate according to an embodiment of the present disclosure.

[0043] Fig. 19 is a schematic diagram of an electronic paper according to an embodiment of the present disclosure. DETAIL DESCRIPTION OF EMBODIMENTS

[0044] In order to enable one of ordinary skill in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in further detail with reference to the accompanying drawings and the detailed description.

[0045] Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which the present disclosure belongs. The terms “first”, “second”, and the like used in the present disclosure are not intended to indicate any order, quantity, or importance, but rather are used for distinguishing one element from another. Further, the term “a”, “an”, “the”, or the like used herein does not denote a limitation of quantity, but rather denotes the presence of at least one element. The term “comprising”, “including”, or the like, means that the element or item preceding the term contains the element or item listed after the term and its equivalent, but does not exclude other elements or items. The term “connected”, “coupled”, or the like is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect connections. The terms “upper”, “lower”, “left”, “right”, and the like are used only for indicating relative positional relationships, and when the absolute position of an object being described is changed, the relative positional relationships may also be changed accordingly.

[0046] Before the embodiments of the present disclosure are described, it should be noted that in the embodiments of the present disclosure, by example only, an extending direction of a gate line is a first direction, and an extending direction of a data line is a second direction.

[0047] Fig. 1 is a schematic cross-sectional view of an electronic paper. As shown in Fig. 6 1, an electronic paper generally includes a display substrate 1 and a cover plate 3 arranged opposite to each other, and an electrophoretic layer 2 arranged between the display substrate 1 and the cover plate 3. The display substrate 1 includes a base substrate 10, a plurality of gate lines 11 and a plurality of data lines 12 arranged on the base substrate 10. The plurality of gate lines 11 and the plurality of data lines 12 intersect with each other to define a plurality of pixel units, and each pixel unit includes a thin film transistor 14, a pixel electrode 16, and a common electrode 15. A gate electrode of the thin film transistor is connected to a corresponding gate line 11, a source electrode of the thin film transistor is connected to a corresponding data line 12, and a drain electrode of the thin film transistor is connected to the pixel electrode. The electrophoretic layer 2 includes a plurality of electrophoretic capsules corresponding to the plurality of pixel units, each electrophoretic capsule may include a capsule body, and a electrophoretic liquid and charged particles in the capsule body, and the charged particles may include black particles, white particles, and colored particles, and the like.

[0048] By writing a scanning signal into the gate line 11, the thin film transistor is turned on, a data voltage on the data line 12 is applied to the pixel electrode, and the pixel electrode and the common electrode form an electric field therebetween, thereby driving the charged particles in the electrophoretic capsule to move in the electrophoretic liquid, and therefore implementing the display of the electronic paper.

[0049] Fig. 2 is a schematic diagram of an active electromagnetic coil. Fig. 3 is a top view of a part of a display substrate 1 shown in Fig. 1. Fig. 4 is a cross-sectional view of a display substrate 1 of the electronic paper in Fig. 1. As shown in Figs. 2 to 4, on the basis of the above electronic paper, the present disclosure provides an exemplary electronic paper integrated with an active electromagnetic handwriting function, in which an electromagnetic signal line is integrated in a display substrate 1 of the electronic paper, and includes a first electromagnetic signal line 21 extending along a first direction X and arranged in the same layer as the gate electrode, and a second electromagnetic signal line 22 extending along a second direction Y and arranged in the same layer as the data line 12. It should be noted that a common electrode line is arranged in a peripheral region of the display substrate 1, and one end of each first electromagnetic signal line 21 is connected to the common electrode line and forms a first electromagnetic component 100 with the common electrode line. The other end of each first electromagnetic signal line 21 is connected to the corresponding first lead 31 extending to a fan-out region. Similarly, one end of each second electromagnetic signal line 22 is connected to the common 7 electrode line, and forms a second electromagnetic component 200 with the common electrode line. The other end of each second electromagnetic signal line 22 is connected to the corresponding second lead 32 extending to the fan-out region.

[0050] Referring to Fig. 4, in the embodiment of the present disclosure, by taking a thin film transistor being a bottom-gate thin film transistor as an example, the display substrate I 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, the common electrode 15, a second passivation layer 50, and the pixel electrode 16, which are sequentially arranged along a direction away from the base substrate 10. The gate metal layer includes the gate lines 11 and the first electromagnetic signal line 21. The source-drain metal layer includes the data lines 12, a gate signal lead-out line 13, and the second electromagnetic signal line 22.

[0051] The first electromagnetic signal line 21 and the gate lines 11 of the electronic paper are arranged in the same layer, and the second electromagnetic signal line 22 and the data lines 12 are arranged in the same layer, so that the electromagnetic handwriting function can be realized by adopting existing layers and a photomask without increasing the number of masks, and the structure of the layers is consistent with that of a conventional product. However, a metal layer, which is same as a display signal line, is used, so that the wiring space is limited to a certain extent, there is no space in a pixel to further widen the electromagnetic signal line. It needs to widen a peripheral electromagnetic signal line to meet the impedance requirement, so that a width of a border is increased. On the other hand, for an active electromagnetic pen, signals are transmitted by a pen, and are received only by an electromagnetic coil to identify point positions and respond to the signals, so that the impedance requirement on the electromagnetic coil of the electromagnetic board is low. That is, a coil with a greater impedance can realize enough magnetic flux and induced electromotive force to realize the identification and response. For a passive electromagnetic pen, signals are transmitted by an electromagnetic coil on an electromagnetic board, a change of magnetic flux is received by the electromagnetic pen to realize the charging of an induction capacitor, and the signals are transmitted after the induction capacitor is fully charged, and are fed back to the coil of the electromagnetic board to receive the signals. Therefore, the passive electromagnetic handwriting has strict requirements on the number of the coils and the resistance on the electromagnetic board. The more the number of turns of the electromagnetic coils is, the smaller the resistance is, and the greater the realized magnetic flux and the induced electromotive force are, which 8 is enough to support the transmission and feedback of the signals. Therefore, due to the limit by the number of the electromagnetic coils and the resistance, only the active electromagnetic handwriting can be realized, rather than the passive electromagnetic handwriting. The passive electromagnetic handwriting has more stringent requirements on the impedance of the electromagnetic signal, so the scheme of Fig. 2 can only achieve the active electromagnetic handwriting. In order to meet the development trend and the demand of a narrow border of a product and avoid the inconvenience of portability caused by the fact that the active handwriting pen needs a battery structure unit, the present disclosure further provides an electronic paper integrated with a passive electromagnetic handwriting function. Fig. 5 is a schematic diagram of a passive electromagnetic coil. As shown in Fig. 5, for the passive electromagnetic coil, signals are transmitted by an electromagnetic coil and then signals fed back by a pen are received. Due to the loss of electromotive force in the process, the enough magnetic flux and induced electromotive force are needed to achieve the process, based on the principle that the more the number of turns is, the greater the magnetic flux is, and the greater the induced electromotive force is, a single coil is necessarily wrapped to include multiple turns to achieve the induced electromotive force needed by the passive electromagnetic coil, so that the wiring is longer, and it is more difficult to achieve the impedance requirements. Generally, the impedance of the passive electromagnetic coil is required to be about several hundred ohms.

[0052] In view of the above problems, the embodiments of the present disclosure provide the following technical solutions.

[0053] Fig. 6 is a top view of a part of a display substrate 1 according to an embodiment of the present disclosure. Fig. 7 is a cross-sectional view of a display substrate 1 according to an embodiment of the present disclosure. As shown in Figs. 5 to 7, an embodiment of the present disclosure provides a display substrate 1, which includes a base substrate 10, and a plurality of gate lines 11, a plurality of data lines 12, a plurality of first electromagnetic components 100, and a plurality of second electromagnetic components 200 arranged on the base substrate 10. The plurality of first electromagnetic components 100 are sequentially arranged along the second direction Y, the plurality of second electromagnetic components 200 are sequentially arranged along the first direction X, and an orthographic projection of the plurality of first electromagnetic components 100 on the base substrate 10 overlaps with an orthographic projection of the plurality of second electromagnetic components 200 on the base substrate 10. Specifically, in this example, the plurality of first electromagnetic components 100 and the plurality of second 9 electromagnetic components 200 are arranged in different layers from the gate lines 11 and the data lines 12. That is, in the embodiment of the present disclosure, the plurality of first electromagnetic components 100 and the plurality of second electromagnetic components 200 are arranged in different layers from the display signal lines on the display substrate 1. In this case, line widths of the electromagnetic signal lines of the first electromagnetic components 100 and the second electromagnetic components 200 may be increased to meet the impedance requirement while the original space of the display signal lines may not be occupied, so that the influence on the driving of the display signals can be avoided while the narrow border of the product can be realized.

[0054] It should be noted that in the embodiment of the present disclosure, each first electromagnetic component 100 includes at least one turn of the first electromagnetic signal line 21, and each second electromagnetic component 200 includes at least one turn of the second electromagnetic signal line 22. In the embodiment of the present disclosure, as an example, each first electromagnetic component 100 includes a plurality of turns of the first electromagnetic signal lines 21, and each second electromagnetic component 200 includes a plurality of turns of the second electromagnetic signal lines 22.

[0055] Fig. 8 is a schematic diagram of two first electromagnetic components 100 arranged adjacent to each other according to an embodiment of the present disclosure. Fig. 9 is a schematic diagram of a part of a first sub-segment 101 of a first electromagnetic component 100 according to an embodiment of the present disclosure. Fig. 10 is a schematic diagram of a connection of a first sub-segment 101 of a first electromagnetic component 100 with a first adapter electrode 103 according to an embodiment of the present disclosure. Fig. 11 is a cross-sectional view of a connection of a first sub-segment 101 of a first electromagnetic component 100 with a first adapter electrode 103 according to an embodiment of the present disclosure. Fig. 12 is a schematic diagram of a first electromagnetic component 100 according to an embodiment of the present disclosure. Fig. 13 is a schematic diagram of two second electromagnetic components 200 arranged adjacent to each other according to an embodiment of the present disclosure. Fig. 14 is a schematic diagram of a part of a second sub-segment 201 of a second electromagnetic component 200 according to an embodiment of the present disclosure. Fig. 15 is a schematic diagram of a connection of a second sub-segment 201 of a second electromagnetic component 200 with a second adapter electrode 203 according to an embodiment of the present disclosure. Fig. 16 is a cross-sectional view of a connection of a second sub-segment 201 of a second electromagnetic component 200 with a second adapter electrode 203 according to an embodiment of the present disclosure. Fig. 17 is a schematic diagram of a second electromagnetic component 200 according to an embodiment of the present disclosure.

[0056] In some examples, as shown in Figs. 5, 8 to 17, the first electromagnetic component 100 includes a plurality of turns of the first electromagnetic signal lines 21 and the second electromagnetic component 200 includes a plurality of turns of the second electromagnetic signal lines 22. Orthographic projections of any two adjacent first electromagnetic components 100 on the base substrate 10 overlap with each other, to define a plurality of first overlapping regions QI, and orthographic projections of any two adjacent second electromagnetic components 200 on the base substrate 10 overlap with each other, to define a plurality of second overlapping regions Q2. In this way, it can be ensured that the electromagnetic signal lines cover the full screen.

[0057] Each first electromagnetic signal line 21 of one of any two adjacent first electromagnetic components 100 has a first opening 102 extending through the first overlapping region QI, the first opening 102 divides the first electromagnetic signal line 21 into a plurality of first sub-segments 101, the first sub-segments 101 are sequentially arranged and electrically connected through first adapter electrodes 103, and the first adapter electrodes 103 are arranged in a different layer from the first sub-segments 101. With this arrangement, the adjacent first electromagnetic components 100 are prevented from being short connected to each other.

[0058] For example: the number of the first electromagnetic components 100 is M. As shown in Figs. 8 to 11, an ith first electromagnetic component 100 and an (i+1 )th first electromagnetic component 100 define a first overlapping region QI where each first electromagnetic signal line 21 of the (i+l)th first electromagnetic component 100 has a first opening 102; i is in a range from 1 to M-l, and i is a positive integer. Specifically, as an example, each turn of the first electromagnetic signal line 21 is rectangular, an orthographic projection of a lower left portion of the ith first electromagnetic component 100 on the base substrate 10 and an orthographic projection of an upper left portion of the (i+l)th first electromagnetic component 100 on the base substrate 10 overlap with each other, and an orthographic projection of a lower right portion of the ith first electromagnetic component 100 on the base substrate 10 and an orthographic projection of an upper right portion of the (i+1 )th first electromagnetic component 100 on the base substrate 10 overlap with each other, to define a left first overlapping region QI and a right first overlapping region QI. At this time, each turn of the first electromagnetic signal line 21 of the (i+l)th first electromagnetic component 100 has two first openings 102 respectively provided in two first overlapping regions QI, the first openings 102 divide the first electromagnetic signal line 21 into a plurality of first sub-segments 101, the first sub-segments 101 are sequentially arranged and electrically connected through first adapter electrodes 103, and the first adapter electrodes 103 are arranged in a different layer from the first sub-segments 101. In this case, each first electromagnetic signal line 21 of the first one of the first electromagnetic components 100 does not have the first opening 102 and may be arranged in the same layer as the first sub-segments 101 of the other first electromagnetic components 100.

[0059] Each second electromagnetic signal line 22 of one of any two adjacent second electromagnetic components 200 has a second opening 202 extending 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 second sub-segments 201 are sequentially arranged and electrically connected through second adapter electrodes 203, and the second adapter electrodes 203 are arranged in a different layer from the second sub-segments 201. With this arrangement, the adjacent second electromagnetic components 200 are prevented from being short connected to each other.

[0060] For example: the number of the second electromagnetic components 200 is N. As shown in Figs. 13 to 16, a jth second electromagnetic component 200 and a (j+1 )th second electromagnetic component 200 define a second overlapping region Q2 where each second electromagnetic signal line of the (j +1 )th second electromagnetic component 200 has a second opening; j is in a range from I to N-l, and j is a positive integer. Specifically, as an example, each turn of the second electromagnetic signal line 22 is rectangular, an orthographic projection of an upper right portion of the jth second electromagnetic component 200 on the base substrate 10 and an orthographic projection of an upper left portion of the (j+l)th second electromagnetic component 200 on the base substrate 10 overlap with each other, and an orthographic projection of a lower right portion of the jth second electromagnetic component 200 on the base substrate 10 and an orthographic projection of a lower left portion of the (j+l)th second electromagnetic component 200 on the base substrate 10 overlap with each other, to define an upper second overlapping region Q2 and a lower second overlapping region Q2. At this time, each turn of the second electromagnetic signal line 22 of the (j +1 )th second electromagnetic component 200 has two second openings 202 respectively provided in two second overlapping regions Q2, the second openings 202 divide the second electromagnetic signal line 22 into a plurality 12 of second sub-segments 201, the second sub-segments 201 are sequentially arranged and electrically connected through second adapter electrodes 203, and the second adapter electrodes 203 are arranged in a different layer from the second sub-segments 201. In this case, each second electromagnetic signal line 22 of the first one of the second electromagnetic components 200 does not have the second opening 202 and may be arranged in the same layer as the second sub-segments 201 of the other second electromagnetic components 200.

[0061] Further, the first adapter electrodes 103 may be arranged in the same layer as the second sub-segments 201. Likewise, the second adapter electrodes 203 may be arranged in the same layer as the first sub-segments 101. That is, the first electromagnetic components 100 and the second electromagnetic components 200 may be formed by forming two conductive layers. In this way, the lightening and thinning of the display substrate 1 may be achieved. It should be noted that it is necessary to provide an interlayer insulating layer 60 between the two conductive layers.

[0062] Further, as shown in Fig. 12, each first electromagnetic component 100 includes not only the plurality of turns of the first electromagnetic signal lines 21 but also a first lead 301 and a second lead 302. The first lead 301 is electrically connected to a head end of a first turn of the first electromagnetic signal line 21 through a third adapter electrode 104, and the second lead 302 is electrically connected to a tail end of a last turn of the first electromagnetic signal line 21. The first lead 301 and the second lead 302 are both arranged in the same layer as the first sub-segments 101, and the third adapter electrode 104 is in the same layer as the first adapter electrodes 103. In this case, the number of layers is not increased, and the lightening and thinning design of the display substrate 1 can be realized.

[0063] Further, the first lead 301 and the second lead 302 are led out from the same side of the display substrate 1 and extend to a first fan-out region. It should be noted that connection pads are arranged in the first fan-out region, the first lead 301 and the second lead 302 are connected to the connection pads in one-to-one correspondence, and an electromagnetic driving chip is bonded and connected to the connection pads, so that the electromagnetic driving chip is connected to the first lead 301 and the second lead 302.

[0064] Similarly, as shown in Fig. 17, in the embodiment of the present disclosure, each second electromagnetic component 200 includes not only the plurality of turns of the second electromagnetic signal lines 22 but also a third lead 303 and a fourth lead 304. The third lead 303 is electrically connected to a head end of a first turn of the second 13 electromagnetic signal line 22 through a fourth adapter electrode 204, and the fourth lead 304 is electrically connected to a tail end of a last turn of the second electromagnetic signal line 22. The third lead 303 and the fourth lead 304 are both arranged in the same layer as the second sub-segments 201, and the fourth adapter electrode 204 is in the same layer as the second adapter electrodes 203. In this case, the number of layers is not increased, and the lightening and thinning design of the display substrate 1 can be realized.

[0065] Further, 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 arranged in the first fan-out region, the third lead 303 and the fourth lead 304 are connected to the connection pads in one-to-one correspondence, and an electromagnetic driving chip is bonded and connected to the connection pads, so that the electromagnetic driving chip is connected to the third lead 303 and the fourth lead 304.

[0066] In some examples, in the embodiment of the present disclosure, the base substrate 10 includes a first surface and a second surface opposite to each other in a thickness direction of the base substrate 10. The gate lines 11 and the data lines 12 are arranged on the first surface of the base substrate 10 (on a side where the first surface is located), and both the first electromagnetic components 100 and the second electromagnetic components 200 may be arranged on the first surface (on the side where the first surface is located) or the second surface (on a side where the second surface is located). The following description will be made of a case where the first electromagnetic components 100 and the second electromagnetic components 200 are both arranged on the first surface and a case where the first electromagnetic components 100 and the second electromagnetic components 200 are both arranged on the second surface, respectively.

[0067] In a first example, the first electromagnetic components 100 and the second electromagnetic components 200 are arranged on the first surface of the base substrate 10, specifically on a side of the gate lines 11 and the data lines 12 close to the base substrate 10. In Fig. 7, as an example, a main body of the first electromagnetic component 100 (portions of the first sub-segments 101) is closer to the base substrate 10 than a main body of the second electromagnetic component 200 (portions of the second sub-segments 201), and the gate lines 11 are closer to the base substrate 10 than the data lines 12. A first interlayer insulating layer 70 is arranged between a layer where the gate lines 11 are located and a layer where the second electromagnetic components 200 are located. The first interlayer insulating layer 70 may be an insulating layer made of silicon nitride and having a thickness of not more than 1pm. In order to avoid the coupling and crosstalk 14 between signals transmitted by the display signal lines such as the gate lines 11 and the data lines 12 and electromagnetic signals transmitted by the first electromagnetic components 100 and the second electromagnetic components 200, the first interlayer insulating layer 70 is preferably a relatively thick planarization layer made of an organic material, and has a thickness specifically in a range from about 2pm to 3pm. The planarization layer made of the organic material not only has a small dielectric constant, but also has a flat surface for facilitating the subsequent formation of the display signal lines.

[0068] In a second example, Fig. 18 is another cross-sectional view of a display substrate according to an embodiment of the present disclosure. As shown in Fig. 18, the first electromagnetic components 100 and the second electromagnetic components 200 are arranged on the second surface of the base substrate 10, that is, the first electromagnetic components 100 and the second electromagnetic components 200 are separated from the display signal lines by the base substrate 10. The first electromagnetic components 100 and the second electromagnetic components 200 are arranged on one of the upper surface and the lower surface of the base substrate 10, and the display elements such as the pixel units on the base substrate 10 are arranged on the other one of the upper surface and the lower surface of the base substrate 10, so that the space occupied by the display elements on the display substrate 1 is not affected, other coupling capacitances are not caused, the first electromagnetic signal lines 21 and the second electromagnetic signal lines 22 are unnecessarily formed on the same surface as the display signal lines, and the specification for the border of the display substrate I is not affected. In particular, the base substrate 10 is usually a glass substrate, and the display signal lines are segregated from the electromagnetic signal lines by the glass substrate, so as to reduce the interference between the display signal lines and the electromagnetic signal lines to the maximum extent. Compared with the first example, the glass substrate has a good segregating effect, and therefore, a thicker planarization layer is not required to be added as a shield between the signal lines.

[0069] Further, the first electromagnetic components 100 and the second electromagnetic components 200 are arranged on the second surface, so that the bonding of the first electromagnetic components 100 and the second electromagnetic components 200 to the electromagnetic driving chip may be implemented on the second surface of the base substrate 10. A display driving chip bonded to the display signal lines is located on the first surface of the base substrate 10.

[0070] The embodiment of the present disclosure further provides a display apparatus integrated with an electromagnetic handwriting function, and the display apparatus is specifically an electronic paper, and includes the display substrate 1 in any one of the above embodiments. Alternatively, the display apparatus may include the cover plate 3 and the electrophoretic layer 2 as described above. The display substrate 1 includes the base substrate 10 and a driving line layer 300 formed on the base substrate 10.

[0071] Further, the display apparatus according to the embodiment of the present disclosure may further include an electromagnetic receiving component 4, where the electromagnetic receiving component 4 may be specifically an electromagnetic pen.

[0072] Fig. 19 is a schematic diagram of an electronic paper according to an embodiment of the present disclosure. As shown in Fig. 19, the electromagnetic signal lines are arranged on the second surface of the base substrate 10, and other corresponding elements of the electronic paper are arranged on the first surface of the base substrate 10. When a handwriting pen is used, oscillating circuits are both formed on the electromagnetic pen and the display substrate 1. When the oscillating circuit of the display substrate 1 transmits signals, a capacitor of the oscillating circuit in the electromagnetic pen stores the signals, then the oscillating circuit of the display substrate 1 stops transmitting signals, the capacitor in the electromagnetic pen fully stores the signals and then transmits the signals, and the oscillating circuit of the display substrate 1 identifies the change of magnetic flux and identifies point positions and respond to the signals. Generally, an operating frequency of the electromagnetic signal is about hundreds of kHz, which has a great difference with a display frequency of the display apparatus in a range from tens of Hz to hundreds of Hz, so that the mutual interference of the signals cannot be caused. On the other hand, as described above, the electromagnetic signal lines are segregated from the display signal lines by the glass substrate, so that the coupling and crosstalk between the electromagnetic signals and the display signals can be effectively avoided.

[0073] It should be understood that the above embodiments are merely exemplary embodiments adopted to explain the principles of the present disclosure, and the present disclosure is not limited thereto. It will be apparent to one of ordinary skill in the art that various changes and modifications may be made therein without departing from the spirit and scope of the present disclosure, and such changes and modifications also fall within the scope of the present disclosure.

Claims

1. A display substrate, comprising a base substrate, a plurality of gate lines and a plurality of data lines on the base substrate; whereinthe display substrate further comprises 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, and an orthographic projection of the plurality of first electromagnetic components on the base substrate overlaps with an orthographic projection of the plurality of second electromagnetic components on the base substrate; andthe plurality of first electromagnetic components and the plurality of second electromagnetic components are in different layers from the plurality of gate lines and the plurality of data lines.

2. The display substrate of claim 1, wherein orthographic projections of any two adjacent first electromagnetic components of the plurality of first electromagnetic components on the base substrate overlap with each other, to define a plurality of first overlapping regions, and orthographic projections of any two adjacent second electromagnetic components of the plurality of second electromagnetic components on the base substrate overlap with each other, to define a plurality of second overlapping regions;each first electromagnetic component comprises at least one turn of a first electromagnetic signal line, and each second electromagnetic component comprises at least one turn of a second electromagnetic signal line;each first electromagnetic signal line of one of any two adjacent first electromagnetic components has a first opening extending through a corresponding first overlapping region, the first opening divides the first electromagnetic signal line into a plurality of first sub-segments, the plurality of first sub-segments are sequentially arranged and electrically connected together through first adapter electrodes, and the plurality of first sub-segments are in a different layer from the first adapter electrodes; andeach second electromagnetic signal line of one of any two adjacent second electromagnetic components has a second opening extending through a corresponding second overlapping region, the second opening divides the second electromagnetic17signal line into a plurality of second sub-segments, the plurality of second subsegments are sequentially arranged and electrically connected together through second adapter electrodes, and the plurality of second sub-segments are in a different layer from the second adapter electrodes.

3. The display substrate of claim 2, wherein the first adapter electrodes are in a same layer as the plurality of second sub-segments; and / or the second adapter electrodes are in a same layer as the plurality of first sub-segments.

4. The display substrate of claim 2, wherein the display substrate comprises M first electromagnetic components; andan ith first electromagnetic component and an (i+l)th first electromagnetic component of the M first electromagnetic components define the first overlapping region where the first electromagnetic signal line of the (i+l)th first electromagnetic component has the first opening; i is in a range from 1 to M-l, and i is a positive integer.

5. The display substrate of claim 2, wherein the display substrate comprises N second electromagnetic components; anda jth second electromagnetic component and a (j + l)th second electromagnetic component of the N second electromagnetic components define the second overlapping region where the second electromagnetic signal line of the (j + 1 )th second electromagnetic component has the second opening; j is in a range from 1 to N-l, and j is a positive integer.

6. The display substrate of claim 2, wherein each first electromagnetic component further comprises a first lead and a second lead, the first lead is electrically connected to a head end of a first turn of the first electromagnetic signal line through a third adapter electrode, and the second lead is electrically connected to a tail end of a last turn of the first electromagnetic signal line; andthe first lead and the second lead are in a same layer as the plurality of first subsegments, and the third adapter electrode is in a same layer as the first adapter electrodes.

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

8. The display substrate of claim 2, wherein each second electromagnetic component further comprises a third lead and a fourth lead, the third lead is electrically connected to a head end of a first turn of the second electromagnetic signal line through a fourth adapter electrode, and the fourth lead is electrically connected to a tail end of a last turn of the second electromagnetic signal line; andthe third lead and the fourth lead are in a same layer as the plurality of second sub-segments, and the fourth adapter electrode is in a same layer as the second adapter electrodes.

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

10. The display substrate of any one of claims 1 to 9, wherein the base substrate comprises a first surface and a second surface opposite to each other in a thickness direction of the base substrate, and the plurality of gate lines, the plurality of data lines, the plurality of first electromagnetic components, and the plurality of second electromagnetic components are on the first surface.

11. The display substrate of claim 10, wherein the plurality of first electromagnetic components and the plurality of second electromagnetic components are closer to the base substrate than the plurality of gate lines and the plurality of data lines.

12. The display substrate of claim 11, wherein the display substrate further comprises a first interlayer insulating layer on a side, away from the base substrate, of ones of the plurality of first electromagnetic components and the plurality of second electromagnetic components, which are further from the base substrate; andthe plurality of gate lines and the plurality of data lines are on a side of the first interlayer insulating layer away from the base substrate, and the first interlayer insulating layer is made of an organic material.

13. The display substrate of claim 12, wherein the first interlayer insulating layer has a thickness in a range from 2pm to 3pm.

14. The display substrate of any one of claims 1 to 9, wherein the base substrate comprises a first surface and a second surface opposite to each other in a thickness direction of the base substrate, the plurality of gate lines and the plurality of data lines are on the first surface, and the plurality of first electromagnetic components and the plurality of second electromagnetic components are on the second surface.

15. The display substrate of claim 14, wherein the display substrate further comprises a plurality of first connection pads on the first surface and a plurality of second connection pads on the second surface, the plurality of gate lines and the plurality of data lines are connected to corresponding first connection pads, respectively, and the plurality of first electromagnetic components and the plurality of second electromagnetic components are connected to corresponding second connection pads, respectively.

16. The display substrate of any one of claims 1 to 9, wherein each first electromagnetic component comprises at least one turn of a first electromagnetic signal line, and the first electromagnetic signal line comprises a first portion with a same extending direction as that of the plurality of gate lines and a second portion with a same extending direction as that of the plurality of data lines.

17. The display substrate of any one of claims 1 to 9, wherein each second electromagnetic component comprises at least one turn of a second electromagnetic signal line, and the second electromagnetic signal line comprises a third portion with a same extending direction as that of the plurality of data lines and a fourth portion with a same extending direction as that of the plurality of gate lines.

18. A display apparatus, comprising the display substrate of any one of claims 1 to 17.

19. The display apparatus of claim 18, wherein the display apparatus is anelectronic paper.

20. The display apparatus of claim 18, further comprising an electromagnetic receiving component.

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