CN117827032A - Display substrate and display device - Google Patents

Abstract

The embodiment of the application provides a display substrate and display device, the display substrate includes: a touch metal layer; the touch metal layer comprises a plurality of electrode units; each electrode unit comprises a row direction electromagnetic induction electrode, a column direction electromagnetic induction electrode, a row direction touch electrode and a column direction touch electrode; projection of the electromagnetic induction electrode in the row direction of each electrode unit on the supporting plate of the display substrate is free of overlapping, and projection of the electromagnetic induction electrode in the row direction of each electrode unit and the touch electrode in the row direction on the supporting plate is free of overlapping; projection of the electromagnetic induction electrode in the column direction of each electrode unit on the supporting plate is free of overlapping, and projection of the electromagnetic induction electrode in the column direction of each electrode unit and the touch electrode in the column direction on the supporting plate is free of overlapping; the projections of the electromagnetic induction electrodes in the row direction and the electromagnetic induction electrodes in the column direction of each electrode unit on the supporting plate have overlapping parts. The design of the electromagnetic induction antenna board is canceled, and the thickness of the display product is reduced.

Description

Display substrate and display device

Technical Field

The present disclosure relates to the field of display technologies, and in particular, to a display substrate and a display device.

Background

Along with the diversification of network education and office sites, portable electronic products are popularized in the business field or education field, users have higher demands on man-machine interaction, and especially the demands on pen writing are more obvious. At present, the display products on the market realize the interactive function of an electromagnetic pen and a display screen through an electromagnetic induction antenna board, and the electromagnetic induction antenna board is adhered below the display screen, but the thickness of the display products is increased by adopting the mode. Therefore, how to reduce the thickness of the display product on the basis of realizing interaction between the electromagnetic pen and the display screen is a problem to be solved.

Disclosure of Invention

An objective of the embodiments of the present application is to provide a display substrate and a display device, so as to reduce the thickness of a display product. The specific technical scheme is as follows:

in a first aspect, embodiments of the present application provide a display substrate, including:

a touch metal layer; the touch metal layer comprises a plurality of electrode units; each electrode unit comprises a row direction electromagnetic induction electrode, a column direction electromagnetic induction electrode, a row direction touch electrode and a column direction touch electrode;

for each electrode unit, the projection of the row-direction electromagnetic induction electrode of the electrode unit on the supporting plate of the display substrate has no overlapping part, the projection of the column-direction electromagnetic induction electrode of the electrode unit on the supporting plate has no overlapping part, and the projections of the row-direction electromagnetic induction electrode and the column-direction electromagnetic induction electrode of the electrode unit on the supporting plate have overlapping parts;

forming a first electromagnetic induction electrode by electrically connecting adjacent electromagnetic induction electrodes in the same row direction in the row direction of the plurality of electrode units; forming a second electromagnetic induction electrode by electrically connecting adjacent electromagnetic induction electrodes in the same column direction in the column direction of the plurality of electrode units;

for each electrode unit, a first projection of a row-direction touch electrode of the electrode unit on the supporting plate and a second projection of a column-direction touch electrode of the electrode unit on the supporting plate are not overlapped, and the first projection and the second projection are spliced in a mortise-tenon splicing mode;

forming a first touch electrode by electrically connecting adjacent touch electrodes in the same row direction in the row direction of the plurality of electrode units; and forming a second touch electrode by electrically connecting adjacent touch electrodes in the same column direction in the column direction of the plurality of electrode units.

In a possible implementation manner, the projection of the row-direction touch electrode and the row-direction electromagnetic induction electrode on the supporting plate has no overlapping part; and the projection of the column-direction touch electrode and the column-direction electromagnetic induction electrode on the supporting plate is free of an overlapping part.

In one possible implementation manner, the touch metal layer comprises a first touch layer and a second touch layer;

the second touch layer is arranged on one side, away from the supporting plate, of the first touch layer;

the row-direction touch electrode and the row-direction electromagnetic induction electrode are arranged on the first touch layer, and the column-direction touch electrode and the column-direction electromagnetic induction electrode are arranged on the second touch layer;

or alternatively;

the row-direction touch electrode and the row-direction electromagnetic induction electrode are arranged on the second touch layer, and the column-direction touch electrode and the column-direction electromagnetic induction electrode are arranged on the first touch layer.

In one possible embodiment, the row-direction touch electrode is electrically insulated from the row-direction electromagnetic induction electrode, and the column-direction touch electrode is electrically insulated from the column-direction electromagnetic induction electrode.

In one possible embodiment, the electrode unit further comprises: a virtual floating electrode; the virtual floating electrode is arranged between the row-direction touch electrode and the column-direction touch electrode.

In one possible embodiment, the display substrate further includes:

the display comprises an electromagnetic shielding layer, a supporting film layer, a display layer, a film packaging layer, a transparent photoresist layer, a polarizing plate layer, an optical adhesive layer and a cover plate layer;

the electromagnetic shielding layer is arranged on the supporting plate layer; the supporting film layer is arranged on one side, far away from the supporting plate, of the electromagnetic shielding layer; the display layer is arranged on one side of the support film layer, which is far away from the support plate; the film packaging layer is arranged on one side of the display layer far away from the supporting plate; the first touch control layer is arranged on one side, far away from the supporting plate, of the film packaging layer; the transparent light resistance layer is arranged on one side, far away from the supporting plate, of the second touch control layer; the polarizing plate layer is arranged on one side of the transparent photoresist layer, which is far away from the supporting plate; the optical adhesive layer is arranged on one side, far away from the supporting plate, of the polarizing plate layer; the cover plate layer is arranged on one side, far away from the supporting plate, of the optical adhesive layer.

In a second aspect, an embodiment of the present application provides a display device, where the display device includes an electrode routing structure, where the electrode routing structure is applied to the touch metal layer of the display substrate in any one of the first aspects, and the electrode routing structure includes:

a plurality of first annular wire groups, a plurality of second annular wire groups, a plurality of first bonding pads and a plurality of second bonding pads;

for each first annular wiring group, the first annular wiring group and two first electromagnetic induction electrodes in the touch metal layer form a first annular electromagnetic induction channel together, one end of the first annular wiring group is electrically connected with one first bonding pad, and the other end of the first annular wiring group is electrically connected with the other first bonding pad;

for each second annular wiring group, the second annular wiring group and two second electromagnetic induction electrodes in the touch metal layer form a second annular electromagnetic induction channel together, one end of the second annular wiring group is electrically connected with one second bonding pad, and the other end of the second annular wiring group is electrically connected with the other second bonding pad.

In one possible embodiment, the electrode routing structure further includes:

a plurality of third wires, a plurality of fourth wires, a plurality of third bonding pads and a plurality of fourth bonding pads;

for each third wire, one end of the third wire is electrically connected with one first touch electrode, and the other end of the third wire is electrically connected with one third bonding pad;

for each fourth wire, one end of the fourth wire is electrically connected with one second touch electrode, and the other end of the fourth wire is electrically connected with one fourth bonding pad.

In one possible embodiment, the paths of the third trace and the fourth trace have no overlapping portions with the paths of the first annular trace group and the second annular trace group.

In a possible implementation manner, the display device further includes a touch driving circuit, a switch control circuit, a micro control unit, and the display substrate according to any one of the first aspect;

the touch driving circuit is respectively and electrically connected with the third bonding pad and the fourth bonding pad and is used for outputting driving signals to drive the first touch electrode and the second touch electrode;

the switch control circuit is respectively and electrically connected with the first bonding pad and the second bonding pad and is used for controlling the opening and closing of the first annular electromagnetic induction channel and the second annular electromagnetic induction channel;

the micro control unit is respectively and electrically connected with the touch control driving circuit and the switch control circuit and is used for controlling the touch control driving circuit and the switch control circuit.

The beneficial effects of the embodiment of the application are that:

the embodiment of the application provides a display substrate and display device, the display substrate includes: a touch metal layer; the touch metal layer comprises a plurality of electrode units; each electrode unit comprises a row direction electromagnetic induction electrode, a column direction electromagnetic induction electrode, a row direction touch electrode and a column direction touch electrode; for each electrode unit, the projection of the electromagnetic induction electrode in the row direction of the electrode unit on the supporting plate of the display substrate has no overlapping part, the projection of the electromagnetic induction electrode in the column direction of the electrode unit on the supporting plate has no overlapping part, and the projections of the electromagnetic induction electrode in the row direction and the electromagnetic induction electrode in the column direction of the electrode unit on the supporting plate have overlapping parts; forming a first electromagnetic induction electrode by electrically connecting adjacent electromagnetic induction electrodes in the same row direction in the row direction of the plurality of electrode units; forming a second electromagnetic induction electrode by electrically connecting adjacent electromagnetic induction electrodes in the same column direction in the column direction of the plurality of electrode units; for each electrode unit, the first projection of the row-direction touch electrode of the electrode unit on the supporting plate and the second projection of the column-direction touch electrode of the electrode unit on the supporting plate are not overlapped, and the first projection and the second projection are spliced in a mortise-tenon splicing mode; forming a first touch electrode by electrically connecting adjacent touch electrodes in the same row direction in the row direction of the plurality of electrode units; in the column direction of the plurality of electrode units, the adjacent touch electrodes in the same column direction are electrically connected to form a second touch electrode. Through the touch metal layer with electromagnetic induction electrode design at the display substrate, with touch metal layer of touch electrode sharing to realize electromagnetic pen and screen and carry out interactive function, compare in the design mode with electromagnetic induction antenna board adhesion in the display screen below in the correlation technique, can attenuate the thickness of display product.

Of course, not all of the above-described advantages need be achieved simultaneously in practicing any one of the products or methods of the present application.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly introduce the drawings that are required to be used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present application, and other embodiments may also be obtained according to these drawings to those skilled in the art.

FIG. 1 is a schematic diagram of a structure of electromagnetic induction in the related art;

fig. 2 is a schematic structural diagram of an antenna array of an electromagnetic induction antenna board in the related art;

FIG. 3 is a schematic diagram of a system frame of a display module, a circuit module and an electromagnetic pen input module according to the related art;

fig. 4a is a schematic structural diagram of a display substrate according to an embodiment of the present disclosure;

FIG. 4b is an explanatory diagram of a first middle region and a second middle region;

FIG. 4c is a schematic view of a first structure of an electrode unit matrix of 3*3;

fig. 5a is a schematic view of a second structure of a display substrate according to an embodiment of the present disclosure;

FIG. 5b is a schematic diagram of a second configuration of an electrode unit matrix of 3*3;

FIG. 6a is a schematic diagram showing a structure in which a row-direction touch electrode and a row-direction electromagnetic induction electrode are arranged in an electrode unit;

FIG. 6b is a schematic diagram showing a structure in which the touch electrodes in the column direction and the electromagnetic induction electrodes in the column direction are arranged in the electrode units;

FIG. 6c is a schematic view of an electrode unit;

FIG. 7 is a schematic structural view and a partial enlarged view of an electrode unit including a dummy floating electrode;

fig. 8 is a schematic diagram of a third structure of a display substrate according to an embodiment of the present disclosure;

fig. 9a is a schematic diagram of a first structure of a display device according to an embodiment of the present application;

FIG. 9b is a first schematic diagram of an electrode trace structure;

FIG. 9c is a second schematic diagram of an electrode trace structure;

fig. 10 is a schematic diagram of a second structure of the display device according to the embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. Based on the embodiments herein, a person of ordinary skill in the art would be able to obtain all other embodiments based on the disclosure herein, which are within the scope of the disclosure herein.

Along with the diversification of network education and office sites, portable electronic products are popularized in the business field or education field, users have higher demands on man-machine interaction, and especially the demands on pen writing are more obvious.

Currently, display products on the market realize the interaction function between an electromagnetic pen and a display screen through an electromagnetic induction antenna board, as shown in fig. 1, an electromagnetic induction technology (EMR, electro Magnetic Resonance) includes an electromagnetic pen, glass, a display screen, an electromagnetic induction antenna board, a shielding board and the like, the electromagnetic induction antenna board is adhered below the display screen, and components capable of inducing various information through high-speed switching of the generation and the reception of an electromagnetic field around the electromagnetic induction antenna board are called as components of the electromagnetic induction antenna board. The main principle of EMR is that electromagnetic signals are emitted by an electromagnetic pen and interact with an electromagnetic induction antenna board below a display screen, when the electromagnetic pen is close to the display screen, the electromagnetic induction antenna board below the display screen can induce the electromagnetic signals of the electromagnetic pen so as to change induction lines of the electromagnetic induction antenna board, signals are received according to an antenna array in the row direction and the column direction, and the X coordinate and Y coordinate positions of the electromagnetic pen are obtained through calculation through the change of magnetic flux, as shown in figure 2.

The display screen, the touch screen and the electromagnetic induction antenna board are stacked together by the current display product, so that the EMR electromagnetic pen and finger touch can be operated. Referring to fig. 3, a system block diagram of the display module, the circuit module and the electromagnetic pen input module is not described herein, where the description about the display module and the display driving circuit is omitted, the touch driving circuit is used for outputting a driving signal to drive a touch electrode of the touch module, the switch control circuit is used for controlling on and off of an antenna array in a row direction and a column direction of the electromagnetic induction antenna board, the micro control unit MCU (Microcontroller Unit) is electrically connected with the touch driving circuit and the switch control circuit respectively and used for controlling the touch driving circuit and the switch control circuit, the central processor CPU (Central Processing Unit) is used for controlling the MCU, and the electromagnetic pen input module includes a pen point coil, a variable capacitor for pressure detection, an oscillation circuit, an eraser coil and a side key capacitor.

When the electromagnetic pen input module selects a passive electromagnetic pen, the switch control circuit continuously outputs alternating current through the current drive and the antenna array switch, so that an antenna loop of the electromagnetic induction antenna board emits magnetic field signals, an oscillating circuit in the electromagnetic pen senses the change of an electromagnetic field to generate feedback signals, the electromagnetic induction antenna board receives signals reflected by the electromagnetic pen, and according to the antenna array receiving signals in the row direction and the column direction, the controller chip calculates and obtains the X coordinate and the Y coordinate of the electromagnetic pen through the change of magnetic flux, so that the coordinate position of the electromagnetic pen is positioned.

When the electromagnetic pen input module is an active electromagnetic pen, the electromagnetic pen actively transmits electromagnetic signals, the electromagnetic induction antenna board receives the electromagnetic pen signals, the position of the electromagnetic pen is detected preliminarily, a plurality of coils around the electromagnetic pen are scanned, the detected signals are calculated, and the signals such as coordinates, inclination angles, pen speed, pressure and the like of the pen can be calculated accurately through multiple cycles. The realization of the pressure is realized through a variable capacitor inside the electromagnetic pen at the rear end of the electromagnetic pen point, when a user writes a picture through the electromagnetic pen and applies pressure, the pen point moves towards the tail part of the electromagnetic pen, so that the distance between the anode and the cathode of the capacitor is changed, and the induction to the pressure is realized.

However, the design mode of adhering the electromagnetic induction antenna board below the display screen increases the circuit board assembly, so that the thickness of the display product is increased. Therefore, how to reduce the thickness of the display product on the basis of realizing interaction between the electromagnetic pen and the display screen is a problem to be solved.

It is understood that the description of the positional relationship among the glass, the display screen, the touch screen, the electromagnetic induction antenna board and the shielding board appearing in the above description is described based on the front view of the stacked structure of the display module.

In order to solve the above problems, embodiments of the present application provide a display substrate and a display device.

First, a display substrate 1 provided in an embodiment of the present application is described, referring to fig. 4a, the display substrate 1 includes:

a touch metal layer 11; the touch metal layer 11 includes a plurality of electrode units 111; each of the electrode units 111 includes a row-direction electromagnetic induction electrode 1111 and a column-direction electromagnetic induction electrode 1112;

for each electrode unit 111, the projection of the row direction electromagnetic induction electrode 1111 of the electrode unit 111 on the support plate 12 of the display substrate 1 has no overlapping portion, the projection of the column direction electromagnetic induction electrode 1112 of the electrode unit 111 on the support plate 12 has no overlapping portion, and the projections of the row direction electromagnetic induction electrode 1111 and the column direction electromagnetic induction electrode 1112 of the electrode unit 111 on the support plate 12 have overlapping portions;

forming a first electromagnetic induction electrode by electrically connecting adjacent electromagnetic induction electrodes in the same row direction in the row direction of the plurality of electrode units 111; in the column direction of the plurality of electrode units 111, a second electromagnetic induction electrode is formed by electrically connecting between the electromagnetic induction electrodes adjacent in the same column direction.

For the position of the row direction electromagnetic induction electrode 1111 and the column direction electromagnetic induction electrode 1112 included in each electrode unit 111 at the electrode unit, the application is not limited, the row direction electromagnetic induction electrode 1111 may be located at two ends of the electrode unit 111, the column direction electromagnetic induction electrode 1112 may be located at other two ends of the electrode unit 111, the row direction electromagnetic induction electrode 1111 may be located in a first middle area of the electrode unit 111, the column direction electromagnetic induction electrode 1112 may be located in a second middle area of the electrode unit 111, and the row direction electromagnetic induction electrode 1111 and the column direction electromagnetic induction electrode 1112 may also be located in other areas of the electrode unit 111. A schematic representation of the first and second middle regions can be seen in fig. 4b.

The number of the row-direction electromagnetic induction electrodes 1111 and the column-direction electromagnetic induction electrodes 1112 included in each electrode unit 111 is not limited in this application. In one example, each electrode unit 111 may include two row-direction electromagnetic induction electrodes 1111 and two column-direction electromagnetic induction electrodes 1112, and the following embodiments and the accompanying drawings are described and illustrated by each electrode unit 111 including two row-direction electromagnetic induction electrodes 1111 and two column-direction electromagnetic induction electrodes 1112.

It will be appreciated that in fig. 4a, two rows of electromagnetic induction electrodes 1111 of each electrode unit 111 are located at two ends of the electrode unit 111, and two columns of electromagnetic induction electrodes 1112 are located at the other two ends of the electrode unit 111, and in fig. 4a, the direction indicated by the first arrow is the row direction of the plurality of electrode units 111, and the direction indicated by the second arrow is the column direction of the plurality of electrode units 111.

It can be understood that fig. 4a is a top view of a plurality of electrode units based on a top view angle of a stacked structure of the display module, and based on fig. 4a, it can be said that two row-direction electromagnetic induction electrodes 1111 of each electrode unit 111 may be located at an upper edge and a lower edge of the electrode unit 111, and two column-direction electromagnetic induction electrodes 1112 may be located at a left edge and a right edge of the electrode unit 111, respectively.

In one example, the touch metal layer 11 may include 9 electrode units 111, that is, an electrode unit matrix of 3*3, as shown in fig. 4c, the electromagnetic induction electrodes 1111EE111 and 1111EE112 are adjacent in the same row direction, the electromagnetic induction electrodes 1111EE112 and 1111EE113 are adjacent in the same row direction, and the electromagnetic induction electrodes 1111EE111, 1111EE112 and 1111EE113 form a first electromagnetic induction electrode EE11; electromagnetic induction electrode 1112EE211, electromagnetic induction electrode 1112EE212 are adjacent in the same column direction, electromagnetic induction electrode 1112EE212, electromagnetic induction electrode 1112EE213 are adjacent in the same column direction, electromagnetic induction electrode 1112EE211, electromagnetic induction electrode 1112EE212, electromagnetic induction electrode 1112EE213 form a second electromagnetic induction electrode EE21. The first electromagnetic induction electrodes formed by the electromagnetic induction electrodes adjacent to each other in the remaining row direction and the second electromagnetic induction electrodes formed by the electromagnetic induction electrodes adjacent to each other in the remaining column direction are the same, and no detailed description is given here.

In this application embodiment, through the touch-control metal layer with electromagnetic induction electrode design at the display substrate to realize electromagnetic pen and screen and carry out interactive function, compare in the design mode with electromagnetic induction antenna board adhesion in the display screen below among the correlation technique, cancelled the design of electromagnetic induction antenna board, reduced the relevant subassembly of electromagnetic induction antenna board, reduced the cost, thinned the thickness of showing the product.

In one possible embodiment, referring to fig. 5a, the electrode unit 111 further comprises: row-direction touch electrode 1113 and column-direction touch electrode 1114;

for each electrode unit 111, a first projection of a row-direction touch electrode 1113 of the electrode unit 111 on the support plate 12 and a second projection of a column-direction touch electrode 1114 of the electrode unit 111 on the support plate 12 are not overlapped, and the first projection and the second projection are spliced in a tenon-and-mortise splicing manner;

forming a first touch electrode by electrically connecting adjacent touch electrodes in the same row direction in the row direction of the plurality of electrode units 111; in the column direction of the plurality of electrode units 111, a second touch electrode is formed by electrically connecting adjacent touch electrodes in the same column direction.

The specific shape of the touch electrode and the position of the touch electrode in the electrode unit are not specifically limited, and in order to reduce the coupling capacitance between the row-direction touch electrode 1113 and the column-direction touch electrode 1114, it is only necessary to ensure that the projection of the row-direction touch electrode 1113 and the column-direction touch electrode 1114 on the support plate 12 has no overlapping portion.

The mortise and tenon joint refers to that two spliced objects are respectively manufactured into convex-concave shapes at the connecting positions.

It will be appreciated that the touch electrode and its location are only illustrated in fig. 5 a.

In one example, the touch metal layer 11 may include 9 electrode units 111, that is, an electrode unit matrix of 3*3, as shown in fig. 5b, the touch electrodes 1113SE111 and 1113SE112 are adjacent in the same row direction, the touch electrodes 1113SE112 and 1113SE113 are adjacent in the same row direction, and the touch electrodes 1113SE111, 1113SE112 and 1113SE113 form a first touch electrode SE11; touch electrodes 1114SE211, 1114SE212 are adjacent in the same column direction, touch electrodes 1114SE212, 1114SE213 are adjacent in the same column direction, and touch electrodes 1114SE211, 1114SE212, 1114SE213 form a second touch electrode SE21. The same applies to the first touch electrode formed by the touch electrode adjacent in the remaining row direction and the second touch electrode formed by the touch electrode adjacent in the remaining column direction, and the detailed description is omitted here.

In the embodiment of the present application, the projection of the row-direction touch electrode 1113 and the column-direction touch electrode 1114 on the support plate 12 has no overlapping portion, so that the coupling capacitance between the row-direction touch electrode 1113 and the column-direction touch electrode 1114 is reduced. By designing the electromagnetic induction electrode on the touch metal layer and sharing the touch metal layer with the touch electrode, the thickness of the display product is reduced.

In one possible implementation, the projection of the row-direction touch electrode 1113 and the row-direction electromagnetic induction electrode 1111 onto the support plate 12 has no overlapping portion; the projection of the column-direction touch electrode 1114 and the column-direction electromagnetic induction electrode 1112 on the support plate 12 has no overlapping portion.

The projections of the row-direction touch electrode 1113 and the column-direction electromagnetic induction electrode 1112 on the support plate 12 have overlapping portions; the projections of the column-direction touch electrode 1114 and the row-direction electromagnetic induction electrode 1111 on the support plate 12 have overlapping portions. However, in order to reduce noise interference between the touch electrode and the electromagnetic induction electrode, overlap between the touch electrode and the electromagnetic induction electrode should be reduced as much as possible.

In one possible implementation, the touch metal layer 11 includes a first touch layer 301 and a second touch layer 302;

the second touch layer 302 is disposed on a side of the first touch layer 301 away from the support plate 12;

the row-direction touch electrode 1113 and the row-direction electromagnetic induction electrode 1111 are disposed on the first touch layer 301, and the column-direction touch electrode 1114 and the column-direction electromagnetic induction electrode 1112 are disposed on the second touch layer 302;

or alternatively;

the row-direction touch electrode 1113 and the row-direction electromagnetic induction electrode 1111 are disposed on the second touch layer 302, and the column-direction touch electrode 1114 and the column-direction electromagnetic induction electrode 1112 are disposed on the first touch layer 301.

Fig. 6a is a schematic top view of the arrangement of the row-direction touch electrodes 1113 and the row-direction electromagnetic induction electrodes 1111 in the electrode unit 111, where the row-direction touch electrodes 1113 and the row-direction electromagnetic induction electrodes 1111 may be disposed together in the first touch layer 301 or may be disposed together in the second touch layer 302, and it can be understood that two row-direction electromagnetic induction electrodes 1111 are disposed at two ends of the electrode unit 111 in fig. 6a, which may be referred to as an upper edge and a lower edge, and the row-direction touch electrodes 1113 are disposed in a first middle area of the electrode unit 111 for illustration.

It is understood that the number of the row-direction touch electrodes 1113 is not particularly limited.

Fig. 6b is a schematic top view of the electrode unit 111 with the column-direction touch electrodes 1114 and the column-direction electromagnetic induction electrodes 1112 arranged therein, wherein the column-direction touch electrodes 1114 and the column-direction electromagnetic induction electrodes 1112 may be disposed on the first touch layer 301 or the second touch layer 302 together, and it is understood that two column-direction electromagnetic induction electrodes 1112 in fig. 6b are disposed at two ends of the electrode unit 111, that is, a left edge and a right edge, and the column-direction touch electrodes 1114 are disposed in a second middle region of the electrode unit 111 for illustration.

It is understood that the number of the column-direction touch electrodes 1114 is not particularly limited.

Fig. 6c is a schematic top view of the electrode unit 111, which includes a row-direction touch electrode 1113, a row-direction electromagnetic induction electrode 1111, a column-direction touch electrode 1114, and a column-direction electromagnetic induction electrode 1112.

In one possible implementation, the row-direction touch electrode 1113 is electrically insulated from the row-direction electromagnetic-induction electrode 1111, and the column-direction touch electrode 1114 is electrically insulated from the column-direction electromagnetic-induction electrode 1112.

In one possible embodiment, referring to fig. 7, the electrode unit 111 further includes: a dummy floating electrode 1115; the dummy floating electrode 1115 is disposed between the row-direction touch electrode 1113 and the column-direction touch electrode 1114.

Fig. 7 is a schematic top view and a partial enlarged view of an electrode unit 111 including a dummy floating electrode.

In the embodiment of the present application, by disposing the virtual floating electrode 1115 between the row-direction touch electrode 1113 and the column-direction touch electrode 1114, the coupling capacitance between the row-direction touch electrode 1113 and the column-direction touch electrode 1114 is reduced.

In one possible embodiment, referring to fig. 8, the display substrate 1 further includes:

an electromagnetic shielding layer 13, a supporting film layer 14, a display layer 15, a film packaging layer 16, a transparent photoresist layer 17, a polarizing plate layer 18, an optical adhesive layer 19 and a cover plate layer 20;

the electromagnetic shielding layer 13 is provided on the support plate 12; the supporting film layer 14 is arranged on one side of the electromagnetic shielding layer 13 away from the supporting plate 12; the display layer 15 is arranged on the side of the support film layer 14 away from the support plate 12; the film encapsulation layer 16 is arranged on the side of the display layer 15 away from the support plate 12; the first touch control layer 301 is disposed on a side of the thin film encapsulation layer 16 away from the support plate 12; the transparent photoresist layer 17 is disposed on a side of the second touch layer 302 away from the support plate 12; the polarizing plate layer 18 is disposed on the transparent photoresist layer 17 at a side away from the support plate 12; the optical adhesive layer 19 is disposed on the polarizing plate layer 18 at a side away from the support plate 12; the cover plate layer 20 is arranged on the side of the optical cement layer 19 remote from the support plate 12.

It will be appreciated that fig. 8 is illustrated in a front view of the stacked structure of the display module.

The embodiment of the present application further provides a display device 2, referring to fig. 9a, the display device 2 includes an electrode wiring structure 21, the electrode wiring structure 21 is applied to the touch metal layer 11 of the display substrate in any of the foregoing embodiments, and the electrode wiring structure 21 includes:

a plurality of first annular wire groups 211, a plurality of second annular wire groups 212, a plurality of first bonding pads 213, a plurality of second bonding pads 214;

for each first annular routing group 211, the first annular routing group 211 and two first electromagnetic induction electrodes in the touch metal layer 11 form a first annular electromagnetic induction channel together, one end of the first annular routing group 211 is electrically connected with one first bonding pad 213, and the other end of the first annular routing group 211 is electrically connected with the other first bonding pad 213;

for each second annular routing group 212, the second annular routing group 212 and two second electromagnetic induction electrodes in the touch metal layer 11 together form a second annular electromagnetic induction channel, one end of the second annular routing group 212 is electrically connected with one second bonding pad 214, and the other end of the second annular routing group 212 is electrically connected with the other second bonding pad 214.

A connection schematic of the first ring-shaped trace group 211, the second ring-shaped trace group 212, the plurality of first pads 213, the plurality of second pads 214 may be seen in fig. 9b.

For the positions of the row-direction electromagnetic induction electrodes 1111 and the column-direction electromagnetic induction electrodes 1112 of each electrode unit 111, the application is not specifically limited, that is, the application is not specifically limited for the positions of the first electromagnetic induction electrodes and the second electromagnetic induction electrodes, and only needs to ensure that each first annular routing group 211 and two first electromagnetic induction electrodes form a first annular electromagnetic induction channel together, and each second annular routing group 212 and two second electromagnetic induction electrodes form a second annular electromagnetic induction channel together.

In one example, referring to fig. 5b and fig. 9b, the 1 st first annular routing group 211 (may be the EL11 shown in fig. 9 b) may form a first annular electromagnetic induction channel together with the first electromagnetic induction electrode EE11 and the first electromagnetic induction electrode EE12, the 1 st first annular routing group 211 may form a first annular electromagnetic induction channel together with the first electromagnetic induction electrode EE11 and the first electromagnetic induction electrode EE13, the 1 st first annular routing group 211 may also form a first annular electromagnetic induction channel together with the first electromagnetic induction electrode EE11 and the first electromagnetic induction electrode EE14, other combinations are not described herein, and only the 1 st first annular routing group 211 and the two first electromagnetic induction electrodes need to form a first annular electromagnetic induction channel together, and the schematic illustration of other combinations may be referred to in fig. 9c. The 2 nd first annular-shaped wire set 211 (which may be EL12 shown in fig. 9 b), the 3 rd first annular-shaped wire sets 211, … …, and the nth first annular-shaped wire set 211 (which may be EL1n shown in fig. 9 b) are the same, but it is necessary to ensure that each first electromagnetic induction electrode is electrically connected to only one first annular-shaped wire set 211.

In one example, referring to fig. 5b and fig. 9b, the 1 st second annular routing group 212 (may be the EL21 shown in fig. 9 b) may form a second annular electromagnetic induction channel together with the second electromagnetic induction electrodes EE21 and EE22, the 1 st second annular routing group 212 may form a second annular electromagnetic induction channel together with the second electromagnetic induction electrodes EE21 and EE23, the 1 st second annular routing group 212 may also form a second annular electromagnetic induction channel together with the second electromagnetic induction electrodes EE21 and EE24, and other combinations are not described herein, only the 1 st second annular routing group 212 and the two second electromagnetic induction electrodes need to form a second annular electromagnetic induction channel together, and the schematic examples of other combinations may refer to fig. 9c. The 2 nd second annular-shaped wire set 212, the 3 rd second annular-shaped wire set 212, … …, and the nth second annular-shaped wire set 212 (which may be EL2n shown in fig. 9 b) are the same, but it is necessary to ensure that each second electromagnetic induction electrode is electrically connected to only one second annular-shaped wire set 212.

It will be appreciated that each first pad 213 is electrically connected to only one first annular trace group 211, and each second pad 214 is electrically connected to only one second annular trace group 212.

In this application embodiment, through the annular electromagnetic induction passageway of a plurality of first annular line groups of walking, a plurality of second annular line groups of walking and first electromagnetic induction electrode, second electromagnetic induction electrode constitution, fix a position the position of electromagnetic pen through annular electromagnetic induction passageway, obtain the X coordinate, the Y coordinate position that electromagnetic pen is located.

In one possible embodiment, referring to fig. 9b, the electrode routing structure 21 further includes:

a plurality of third wires 215, a plurality of fourth wires 216, a plurality of third pads 217, a plurality of fourth pads 218;

for each third wire 215, one end of the third wire 215 is electrically connected with one first touch electrode, and the other end of the third wire 215 is electrically connected with one third bonding pad 217;

for each fourth trace 216, one end of the fourth trace 216 is electrically connected to one second touch electrode, and the other end of the fourth trace 216 is electrically connected to one fourth pad 218.

The third wiring and the fourth wiring are used for transmitting driving signals output by the touch driving circuit to the first touch electrode and the second touch electrode.

It is understood that each first touch electrode is electrically connected to only one third trace 215, and each second touch electrode is electrically connected to only one fourth trace 216.

It will be appreciated that each third pad 217 is electrically connected to only one third trace 215, and each fourth pad 218 is electrically connected to only one fourth trace 216.

The SL11-SL1n shown in fig. 9b is a third plurality of traces 215, and the SL21-SL2n shown in fig. 9b is a fourth plurality of traces 216.

In one possible implementation, the paths of the third trace 215 and the fourth trace 216 have no overlapping portions with the paths of the first annular trace group 211 and the second annular trace group 212.

In order to reduce the interference of signals between the touch electrode and the electromagnetic induction electrode, the third wire 215 and the fourth wire 216 are separated from the first annular wire set 211 and the second annular wire set 212.

In a possible implementation manner, referring to fig. 10, the display device 2 further includes a touch driving circuit 22, a switch control circuit 23, a micro control unit 24, and the display substrate 1 according to any of the foregoing embodiments;

the touch driving circuit 22 is electrically connected to the third pad 217 and the fourth pad 218, and is configured to output a driving signal to drive the first touch electrode and the second touch electrode;

the switch control circuit 23 is electrically connected to the first pad 213 and the second pad 214, and is configured to control opening and closing of the first annular electromagnetic induction channel and the second annular electromagnetic induction channel;

the micro control unit 24 is electrically connected to the touch driving circuit 22 and the switch control circuit 23, respectively, and is used for controlling the touch driving circuit 22 and the switch control circuit 23.

The display substrate provided by the application can be used for scenes such as professional drawing digital screens, notebook computers, flat plates, medium-and-large-size screens special for education and business.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. that are within the spirit and principles of the present application are intended to be included within the scope of the present application.

Claims (10)

1. A display substrate, the display substrate comprising:

a touch metal layer; the touch metal layer comprises a plurality of electrode units; each electrode unit comprises a row direction electromagnetic induction electrode, a column direction electromagnetic induction electrode, a row direction touch electrode and a column direction touch electrode;

for each electrode unit, the projection of the row-direction electromagnetic induction electrode of the electrode unit on the supporting plate of the display substrate has no overlapping part, the projection of the column-direction electromagnetic induction electrode of the electrode unit on the supporting plate has no overlapping part, and the projections of the row-direction electromagnetic induction electrode and the column-direction electromagnetic induction electrode of the electrode unit on the supporting plate have overlapping parts;

forming a first electromagnetic induction electrode by electrically connecting adjacent electromagnetic induction electrodes in the same row direction in the row direction of the plurality of electrode units; forming a second electromagnetic induction electrode by electrically connecting adjacent electromagnetic induction electrodes in the same column direction in the column direction of the plurality of electrode units;

for each electrode unit, a first projection of a row-direction touch electrode of the electrode unit on the supporting plate and a second projection of a column-direction touch electrode of the electrode unit on the supporting plate are not overlapped, and the first projection and the second projection are spliced in a mortise-tenon splicing mode;

forming a first touch electrode by electrically connecting adjacent touch electrodes in the same row direction in the row direction of the plurality of electrode units; and forming a second touch electrode by electrically connecting adjacent touch electrodes in the same column direction in the column direction of the plurality of electrode units.

2. The display substrate according to claim 1, wherein projection of the row-direction touch electrode and the row-direction electromagnetic induction electrode on the support plate has no overlapping portion; and the projection of the column-direction touch electrode and the column-direction electromagnetic induction electrode on the supporting plate is free of an overlapping part.

3. The display substrate of claim 2, wherein the touch metal layer comprises a first touch layer and a second touch layer;

the second touch layer is arranged on one side, away from the supporting plate, of the first touch layer;

the row-direction touch electrode and the row-direction electromagnetic induction electrode are arranged on the first touch layer, and the column-direction touch electrode and the column-direction electromagnetic induction electrode are arranged on the second touch layer;

or alternatively;

the row-direction touch electrode and the row-direction electromagnetic induction electrode are arranged on the second touch layer, and the column-direction touch electrode and the column-direction electromagnetic induction electrode are arranged on the first touch layer.

4. A display substrate according to claim 3, wherein the row-direction touch electrodes are electrically insulated from the row-direction electromagnetic induction electrodes, and the column-direction touch electrodes are electrically insulated from the column-direction electromagnetic induction electrodes.

5. A display substrate according to claim 3, wherein the electrode unit further comprises: a virtual floating electrode; the virtual floating electrode is arranged between the row-direction touch electrode and the column-direction touch electrode.

6. A display substrate according to claim 3, wherein the display substrate further comprises:

the display comprises an electromagnetic shielding layer, a supporting film layer, a display layer, a film packaging layer, a transparent photoresist layer, a polarizing plate layer, an optical adhesive layer and a cover plate layer;

the electromagnetic shielding layer is arranged on the supporting plate; the supporting film layer is arranged on one side, far away from the supporting plate, of the electromagnetic shielding layer; the display layer is arranged on one side of the support film layer, which is far away from the support plate; the film packaging layer is arranged on one side of the display layer far away from the supporting plate; the first touch control layer is arranged on one side, far away from the supporting plate, of the film packaging layer; the transparent light resistance layer is arranged on one side, far away from the supporting plate, of the second touch control layer; the polarizing plate layer is arranged on one side of the transparent photoresist layer, which is far away from the supporting plate; the optical adhesive layer is arranged on one side, far away from the supporting plate, of the polarizing plate layer; the cover plate layer is arranged on one side, far away from the supporting plate, of the optical adhesive layer.

7. A display device, characterized in that the display device comprises an electrode routing structure, the electrode routing structure is applied to the touch metal layer of the display substrate according to any one of the preceding claims 1-6, and the electrode routing structure comprises:

a plurality of first annular wire groups, a plurality of second annular wire groups, a plurality of first bonding pads and a plurality of second bonding pads;

for each first annular wiring group, the first annular wiring group and two first electromagnetic induction electrodes in the touch metal layer form a first annular electromagnetic induction channel together, one end of the first annular wiring group is electrically connected with one first bonding pad, and the other end of the first annular wiring group is electrically connected with the other first bonding pad;

for each second annular wiring group, the second annular wiring group and two second electromagnetic induction electrodes in the touch metal layer form a second annular electromagnetic induction channel together, one end of the second annular wiring group is electrically connected with one second bonding pad, and the other end of the second annular wiring group is electrically connected with the other second bonding pad.

8. The display device of claim 7, wherein the electrode trace structure further comprises:

a plurality of third wires, a plurality of fourth wires, a plurality of third bonding pads and a plurality of fourth bonding pads;

for each third wire, one end of the third wire is electrically connected with one first touch electrode, and the other end of the third wire is electrically connected with one third bonding pad;

for each fourth wire, one end of the fourth wire is electrically connected with one second touch electrode, and the other end of the fourth wire is electrically connected with one fourth bonding pad.

9. The display device according to claim 8, wherein a path of the third wire and the fourth wire has no overlapping portion with a path of the first ring-shaped wire group and the second ring-shaped wire group.

10. The display device of claim 8, further comprising a touch driving circuit, a switch control circuit, a micro control unit, and a display substrate according to any one of claims 1 to 6;

the touch driving circuit is respectively and electrically connected with the third bonding pad and the fourth bonding pad and is used for outputting driving signals to drive the first touch electrode and the second touch electrode;

the switch control circuit is respectively and electrically connected with the first bonding pad and the second bonding pad and is used for controlling the opening and closing of the first annular electromagnetic induction channel and the second annular electromagnetic induction channel;

the micro control unit is respectively and electrically connected with the touch control driving circuit and the switch control circuit and is used for controlling the touch control driving circuit and the switch control circuit.