CN212873451U - Touch substrate and touch display device - Google Patents

Abstract

Translated fromChinese

本实用新型公开了触控基板及触控显示装置。触控基板包括：衬底，和触控电极结构，触控基板包括弯折区和与弯折区相邻的第一非弯折区和第二非弯折区，触控电极结构包括位于第一非弯折区的第一触控电极结构和位于第二非弯折区的第二触控电极结构，第一触控电极结构包括多个第一发射电极组和多个第一接收电极组，第二触控电极结构包括多个第二发射电极组和多个第二接收电极组，弯折区至少包括所述第一接收电极和所述第二接收电极。由此，该触控基板可有效缓解显示装置分屏显示时出现整机接地不良以及误触的问题。

The utility model discloses a touch substrate and a touch display device. The touch substrate includes: a substrate and a touch electrode structure, the touch substrate includes a bending area, a first non-bending area and a second non-bending area adjacent to the bending area, and the touch electrode structure includes a first non-bending area and a second non-bending area adjacent to the bending area. A first touch electrode structure in a non-bending area and a second touch electrode structure in the second non-bending area, the first touch electrode structure includes a plurality of first transmitting electrode groups and a plurality of first receiving electrode groups , the second touch electrode structure includes a plurality of second emission electrode groups and a plurality of second receiving electrode groups, and the bending area includes at least the first receiving electrodes and the second receiving electrodes. Therefore, the touch substrate can effectively alleviate the problems of poor grounding and false touches of the whole machine when the display device is displayed in a split screen.

Description

Touch substrate and touch display device

Technical Field

The utility model relates to a show technical field, specifically, relate to touch-control base plate and manufacturing method, touch-control display device and control method thereof.

Background

With the updating of display devices, foldable display screens are receiving more and more attention. According to the use scene division, the folding display screen can be divided into an outer folding screen and an inner folding screen, wherein the outer folding screen is positioned at the outer side after being folded, for example, the folding display screen can be used as a tablet computer or a notebook computer before being folded, and can be used as a mobile phone after being folded. The foldable display screen generally includes a touch module, and a user controls the display screen by touching the display screen.

However, the current fold-out screens remain to be improved.

SUMMERY OF THE UTILITY MODEL

The present invention is made based on the discovery and recognition by the inventors of the following facts and problems:

the inventor finds that the existing external folding screen has the problems of poor grounding signal of the whole machine and error touch, and the use experience of a user is influenced. Specifically, when the folded screen is in a bent state (i.e. during split-screen display), a situation that a user holds the screen with one hand may occur in an application scene, in such an application scene, because the screen of the folded screen is large, a situation that fingers of the user are all placed on the display screen may generally occur (refer to fig. 5, atouch finger 31 of the user touches thefirst display area 310 to perform touch display, andother portions 32 of the hand of the user are placed on the second display area 320), at this time, because the finger does not touch the middle frame, and the human body is grounded, two ground signals exist in the folded screen, thereby causing a problem that the ground signal of the whole machine is poor, when thetouch finger 31 of the user touches thefirst display area 310, a phenomenon that points are not reported may exist, thereby affecting the touch effect, and affecting the user experience.

In addition, the outer folding screen has a touch substrate, referring to fig. 6, the touch substrate has abending region 130 and a firstnon-bending region 110 and a secondnon-bending region 120 adjacent to thebending region 130, when the outer folding screen in the bending state is in use, the transmitting electrode set 40 in the secondnon-bending region 120 is in the off state, the transmitting electrode set 40 in thefirst non-bending region 110 is in the on state, and the receiving electrode set 50 on the touch substrate extends from the firstnon-bending region 110 to the secondnon-bending region 120 through thebending region 130. Referring to fig. 5, when thetouch finger 31 touches the first non-bending area (thefirst display area 310 shown in the figure), theother portion 32 of the hand of the user interferes with the touch, and the touch position is not coincident with the touch position, so that the problem of mistaken touch is caused, and the user experience is affected. Specifically, referring to fig. 6, when a touch finger of a user touches a position C in the firstnon-bending region 110, the transmitting electrode set 40 corresponding to the position C transmits a signal, thereceiving electrode set 50 receives the signal to perform point reporting, and after other parts of the hand touch a part of the receiving electrode set 50 extending to the secondnon-bending region 120, the sensing amount of the receivingelectrode set 50 is increased, so that the sensed touch position (i.e., the point reporting position) is shifted compared with the actual touch position, thereby causing the point reporting position to be different from the actual touch position, generating a mis-touch problem, and affecting the use. And the interference is not easy to intercept as background noise, so that the interference cannot be solved through an algorithm.

The present invention aims to alleviate or solve at least one of the above mentioned problems to at least some extent.

In one aspect of the present invention, the present invention provides a touch substrate. The touch substrate includes: the touch substrate comprises a bending area, a first non-bending area and a second non-bending area, wherein the first non-bending area and the second non-bending area are adjacent to the bending area and are configured to bend around the bending area; the touch electrode structure comprises a first touch electrode structure positioned in the first non-bending area and a second touch electrode structure positioned in the second non-bending area, the first touch electrode structure comprises a plurality of first transmitting electrode groups and a plurality of first receiving electrode groups, the second touch electrode structure comprises a plurality of second transmitting electrode groups and a plurality of second receiving electrode groups, the first and second transmit electrode sets each extending in a first direction, the first and second receive electrode sets each extending in a second direction, the first direction and the second direction intersect, the first receiving electrode group includes a plurality of first receiving electrodes arranged in the first direction, the second receiving electrode group comprises a plurality of second receiving electrodes arranged along a first direction, and the bending area at least comprises the first receiving electrodes and the second receiving electrodes. Therefore, the touch substrate can effectively solve the problems of poor grounding of the whole machine and mistaken touch during split-screen display of the display device, the touch display effect is improved, and the use experience of a user is improved.

Furthermore, the first receiving electrode and the second receiving electrode are made of the same material in the same layer, the first transmitting electrode group comprises a plurality of first transmitting electrodes, the second transmitting electrode group comprises a plurality of second transmitting electrodes, and the first transmitting electrodes and the second transmitting electrodes are made of the same material in the same layer, so that the touch electrode structure has good service performance and the electrode group is convenient to manufacture.

Further, the orthographic projection of the first receiving electrode positioned in the bending area on the substrate and the orthographic projection of the second receiving electrode positioned in the bending area on the substrate are arranged at intervals. Therefore, the touch electrode structure can be further improved to have good use performance.

Further, the bending region has a plurality of the first receiving electrodes and a plurality of the second receiving electrodes, the plurality of the first receiving electrodes and the plurality of the second receiving electrodes are all arranged along the second direction, and the two second receiving electrodes and the first receiving electrode located between the two second receiving electrodes are arranged in a triangle. Therefore, the touch electrode structure can be further improved to have good use performance.

Furthermore, the first receiving electrode and the second receiving electrode which are positioned in the bending area are both diamond-shaped electrode blocks, the first receiving electrode is provided with a first edge, the second receiving electrode is provided with a second edge, the first edge and the second edge are parallel and adjacent, and the distance between the adjacent first edge and the second edge is smaller than the diagonal length of the diamond-shaped electrode blocks along the first direction

And (4) doubling. Therefore, the display device can be prevented from being unfolded due to unreasonable arrangement of the distance between the first receiving electrode and the second receiving electrodeThe linearity is deteriorated in the flat display.

Further, the bending region has a plurality of the first receiving electrodes and a plurality of the second receiving electrodes, the plurality of the first receiving electrodes and the plurality of the second receiving electrodes are all arranged along the first direction, and a gap is formed between the second receiving electrodes of the adjacent first receiving electrodes. Therefore, the touch electrode structure can be further improved to have good use performance.

Furthermore, the first receiving electrode and the second receiving electrode in the bending area are both triangular electrode blocks, the first receiving electrode and the second receiving electrode in the non-bending area are both rhombic electrode blocks, and the length of the gap between the first receiving electrode and the second receiving electrode in the bending area is smaller than 1/2 of the length of the diagonal of the rhombic electrode block in the non-bending area along the first direction. Therefore, the touch electrode structure can be further improved to have good use performance.

In another aspect of the present invention, the utility model provides a touch display device. The touch display device comprises the touch substrate. Therefore, the touch display device has all the features and advantages of the touch substrate, and are not described herein again. In general, the touch display device has a good touch display effect, and the use experience of a user can be remarkably improved.

The touch panel further comprises a touch chip, wherein the first receiving electrode and the second receiving electrode in the first touch electrode structure in the first non-bending area are connected to the same touch chip, or the touch panel further comprises a main touch chip and an auxiliary touch chip, the main touch chip is electrically connected with the auxiliary touch chip, the first transmitting electrode group and the second transmitting electrode group are electrically connected, the first receiving electrode group is electrically connected with the main touch chip, and the second receiving electrode group is electrically connected with the auxiliary touch chip.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a schematic structural diagram of a touch substrate according to an embodiment of the present invention;

FIG. 2 shows a linearity curve of a touch display device;

fig. 3 is a schematic structural diagram of a touch substrate according to another embodiment of the present invention;

FIG. 4 shows a linearity curve of a touch display device;

FIG. 5 shows a schematic view of a single-handed grip of the fold-out screen;

FIG. 6 is a schematic structural diagram of a conventional touch substrate;

FIG. 7 shows a schematic cross-sectional view taken along line A-A' of FIG. 1;

FIG. 8 is a schematic cross-sectional view taken along line B-B' of FIG. 1;

fig. 9 is a schematic flow chart illustrating a method for manufacturing a touch substrate according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a touch display device according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a touch display device according to another embodiment of the present invention;

fig. 12 is a schematic structural diagram of a touch display device according to another embodiment of the present invention.

Description of reference numerals:

100: a substrate; 110: a first non-bending region; 120: a second non-bending region; 130: a bending zone; 140: a display area; 150: a peripheral routing area; 200: a first touch electrode structure; 400: a second touch electrode structure; 210: a first emitter electrode group; 230: a second set of transmit electrodes; 40: a set of transmit electrodes; 221: a first receiving electrode group; 222: a second receiving electrode group; 223: a gap; 11: a first receiving electrode; 12: a second receiving electrode; 1: a first side; 2: a second edge; 310: a first display area; 320: a second display area; 31: touching a finger; 32: other parts of the hand; 50: receiving an electrode group; 300: an insulating layer; 500: a conductive connection layer; 600: a touch chip; 610: a secondary touch chip; 1000: a touch substrate; 2000: a display panel.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In one aspect of the present invention, the present invention provides a touch substrate. According to the utility model discloses an embodiment, referring to fig. 1, this touch substrate includes: the touch panel includes asubstrate 100 and a touch electrode structure, wherein thesubstrate 100 has abending region 130 and a firstnon-bending region 110 and a secondnon-bending region 120 adjacent to thebending region 130, and the touch electrode structure includes a firsttouch electrode structure 200 located in thefirst non-bending region 110 and a secondtouch electrode structure 400 located in the second non-bendingregion 120. The firsttouch electrode structure 200 has a plurality of first transmittingelectrode groups 210 and a plurality of first receivingelectrode groups 221, the secondtouch electrode structure 400 includes a plurality of second transmittingelectrode groups 230 and a plurality of second receivingelectrode groups 222, the first transmittingelectrode groups 221 and the second transmittingelectrode groups 222 both extend along a first direction, the first receivingelectrode groups 210 and the second receivingelectrode groups 230 both extend along a second direction, the first direction and the second direction intersect, the first receiving electrode groups include a plurality of first receivingelectrodes 11 arranged along the first direction, the second receiving electrode groups include a plurality of second receivingelectrodes 12 arranged along the first direction, and the bending region includes at least a first receiving electrode and a second receiving electrode. That is, the first set of emitter electrodes in the firstnon-bending region 110 is not connected to the second set of emitter electrodes in the secondnon-bending region 120. Therefore, the touch substrate can effectively solve the problems of poor grounding of the whole machine and mistaken touch during split-screen display of the display device, the touch display effect is improved, and the use experience of a user is improved.

The utility model discloses in, when display device divides the screen display to show, user's touch-control finger can touch-control substrate's first non-bendingzone 110 carries out touch-control demonstration, other fingers are put on touch-control substrate's secondnon-bending zone 120, because the part in first receivingelectrode group 221 extends tobending zone 130, it is disconnected with the part that second receivingelectrode group 222 extends tobending zone 130 in, therefore, other fingers are to the touch in second non-bending zone, can not cause the interference to the touch-control demonstration in the first non-bending zone, make report point position and touch position accord with, thereby effectively alleviate the problem that the mistake touched.

Moreover, since the portion of the first receiving electrode set 221 extending into thebending region 130 is not connected to the portion of the second receivingelectrode set 222 extending into thebending region 130, during the split-screen display process of the display device, the second transmitting electrode set and the second receiving electrode set in the second non-bending region can both be in the off state, so as to alleviate the problem of poor grounding of the whole device. Or, the second transmitting electrode group in the second non-bending area can be in an off state, the second receiving electrode group in the second non-bending area is in an on state, and the driving circuit applies a ground signal to the receiving electrode group in the second non-bending area, so that the display device only has one ground signal, and the problem of poor grounding of the whole device can be further alleviated.

Each structure of the touch substrate is described in detail below according to the embodiment of the present invention:

according to the embodiment of the present invention, referring to fig. 1, a plurality of first emitter electrodes in the same firstemitter electrode group 210 extend along the second direction, and the plurality of firstemitter electrode groups 210 are sequentially arranged in the first direction. The plurality offirst receiving electrodes 11 in the same first receivingelectrode group 221 extend in the first direction, and the plurality of first receivingelectrode groups 221 are sequentially arranged in the second direction. Similarly, the second transmitting electrode group and the second receiving electrode group in thesecond touch structure 400 are also arranged in the same arrangement manner. Thefirst receiving electrode 11 and thesecond receiving electrode 12 may be made of the same material in the same layer, and similarly, the first transmitting electrode group may include a plurality of first transmitting electrodes, the second transmitting electrode group may include a plurality of second transmitting electrodes, and the first transmitting electrode and the second transmitting electrode may also be made of the same material in the same layer. Therefore, the touch electrode structure formed by the transmitting electrode group and the receiving electrode group has good service performance, and the manufacturing of the transmitting electrode group and the receiving electrode group is convenient. As can be appreciated by those skilled in the art, the electrodes belonging to the first touch electrode structure and the electrodes belonging to the second touch electrode structure, which are disposed at the same layer, are insulated from each other.

According to some embodiments of the present invention, the orthographic projection of the first receiving electrode on the substrate and the orthographic projection of the second receiving electrode on the substrate are spaced. Specifically, the first receiving electrode of the bending region may be connected to the first receiving electrode of the first receiving electrode group located in the firstnon-bending region 110, that is, the first receiving electrode of the first receiving electrode group in the firstnon-bending region 110 may extend into the bending region. Similarly, the second receiving electrode of the bending region may be connected to the second receiving electrode of the second receiving electrode group located in the secondnon-bending region 130, that is, the second receiving electrode of the second receiving electrode group in the secondnon-bending region 130 may also extend into the bending region. But the first receiving electrode and the second receiving electrode in the bending area are not connected, and a space is formed between the orthographic projections of the first receiving electrode and the second receiving electrode on the substrate.

Specifically, referring to fig. 1, the first and second receivingelectrode groups 221 and 222 may be arranged collinearly. The first receiving electrode and the second receiving electrode in the bending region are also arranged collinearly, and agap 223 is arranged between the collinearly arranged first receiving electrode and the second receiving electrode. Therefore, the problems of false touch and poor grounding of the whole machine can be relieved.

It should be noted that "co-linear arrangement" may mean that the central axis of one electrode group or electrode in the first direction is aligned with the central axis of another electrode group or electrode in the first direction. In other words, the plurality of first receiving electrodes and the plurality of second receiving electrodes in the bending region may be arranged in a first direction, for example, the first receiving electrodes and the second receiving electrodes adjacent thereto are arranged in a row in the first direction. And a gap is provided between the second receiving electrodes of the adjacent first receiving electrodes.

According to the utility model discloses an embodiment, referring to fig. 1, first receiving electrode and second receiving electrode can be the rhombus electrode piece, and first receiving electrode and second receiving electrode's area can be unanimous. The length d of thegap 223 is less than 1/2 of the diagonal length L of the first receivingelectrode 11 or thesecond receiving electrode 12. Specifically, when the lengths of the two diagonals of the diamond-shaped electrode block are not equal, the length d of thegap 223 may be less than 1/2 of the length L of the diagonal of the first receivingelectrode 11 or thesecond receiving electrode 12 along the first direction. The inventors have found that if the length of the gap is greater than or equal to 1/2, which is the diagonal length of the receiving electrode, the linearity of the display device is deteriorated when the display device is laid flat (i.e., the display device is in an unfolded state). Specifically, when the display device is scribed from the first non-bending region to the second non-bending region through the bending region, the gap is too large, which results in a noise that is partially uniformly increased, and a linearity is deteriorated (see fig. 2). The utility model discloses with the length setting in clearance in above-mentioned within range, not only can alleviate display device and appear the mistake when the split screen shows and touch with the bad problem of complete machine ground connection, can also guarantee that display device has good linearity (similar with the linearity curve that figure 4 shows) when the exhibition is flat shows. The specific length of the gap is not particularly limited as long as the gap can play a role in alleviating false touch and poor grounding of the whole display device and enables the display device to have good linearity in the process of flattening display, and the gap can be designed by a person skilled in the art according to specific situations.

As can be understood by those skilled in the art, when the display device is flat, the transmitting electrode and the receiving electrode in the touch electrode structure are both in an on state.

According to the utility model discloses an embodiment, referring to fig. 1, a plurality of transmitting electrode in firsttransmitting electrode group 210 and the secondtransmitting electrode group 230 all can be arranged along the second direction, and a plurality of transmitting electrode that are located same transmitting electrode group symmetry axis in the second direction can be located same straight line. Therefore, the touch electrode structure has good use performance. According to the utility model discloses an embodiment, the size of transmitting electrode can be unanimous with receiving electrode's size. Namely: the first transmitting electrode may be sized to coincide with the first receiving electrode, and the second transmitting electrode may be sized to coincide with thesecond receiving electrode 12.

According to other embodiments of the present invention, referring to fig. 3, in the second direction, the firstreceiving electrode group 221 and the secondreceiving electrode group 222 may be alternately arranged in sequence. In this case, the first receivingelectrode 11 and thesecond receiving electrode 12 may be both diamond-shaped electrode blocks. The bending region has a plurality offirst receiving electrodes 11 and a plurality ofsecond receiving electrodes 12, and the plurality offirst receiving electrodes 11 and the plurality ofsecond receiving electrodes 12 are arranged to intersect in the second direction, that is, thefirst receiving electrodes 11 and the plurality ofsecond receiving electrodes 12 are not arranged collinearly. That is, the bending region may have a plurality of first receiving electrodes and a plurality of second receiving electrodes, and two second receiving electrodes and the first receiving electrode positioned between the two second receiving electrodes may be arranged in a triangle. Referring to fig. 3 in particular, afirst receiving electrode 11 having a first side 1 and asecond receiving electrode 12 having a second side 2, and another second receiving electrode positioned above thesecond receiving electrode 12 may be arranged in a triangle, and a symmetry axis of the first receivingelectrode 11 along the first direction may be positioned on a middle line of a vertical connection line between two adjacent corners of the two second receiving electrodes. Therefore, the part of the first receiving electrode group extending to the bending area is not connected with the part of the second receiving electrode group extending to the bending area, so that the problems of mistaken touch and poor grounding of the whole machine are solved, and the receiving electrode group has good service performance.

The inventor finds that, when the first receiving electrode groups and the second receiving electrode groups are sequentially and alternately arranged in the second direction, and the central axis of the second rhombic electrode blocks in the second direction is located on the side, away from the first non-bending area, of the central axis of the first rhombic electrode blocks in the second direction, that is, the first receiving electrode groups and the second receiving electrode groups are staggered, the display device has better linearity when being flattened compared with the case that the first receiving electrode groups and the second receiving electrode groups are arranged in a collinear manner.

According to an embodiment of the present invention, referring to fig. 3, the first receivingelectrode 11 has a first edge 1The two receivingelectrodes 12 have a second side 2, the first side 1 and the second side 2 are parallel and adjacent, the distance d between the first side 1 and the second side 2 is smaller than the length of the diagonal of the receiving electrode 10

And (4) doubling. The inventors have found that if the distance between the first and second sides is greater than or equal to the length of the diagonal of the receiving electrode

In addition, when the display device is flat-displayed, the linearity of the display device may be deteriorated. The utility model discloses with the interval setting between first limit and the second limit in above-mentioned within range, not only can alleviate display device and appear the mistake when the split screen shows and touch and the bad problem of complete machine ground connection, can also guarantee that display device has good linearity when the exhibition is shown (refer to fig. 4). The specific length of the space between the first edge and the second edge is not particularly limited as long as the effect of alleviating the erroneous touch and the poor grounding of the whole display device can be achieved, and the display device has good linearity when being flattened, and a person skilled in the art can design the display device according to specific situations.

According to the utility model discloses an embodiment, refer to fig. 3, in order to simplify the preparation of touch-control electrode group, when the electrode in the touch-control electrode structure is the rhombus electrode piece, first receivingelectrode 11 and second receivingelectrode 12 stagger and arrange, can make receiving electrode group and be located the setting of a plurality of transmission electricity collineations in another non-bending zone. Specifically, since the plurality of first receiving electrodes in the first receiving electrode group are all arranged along the first direction, and the plurality of second receiving electrodes in the second receiving electrode group are also arranged along the first direction, when thefirst receiving electrodes 11 and thesecond receiving electrodes 12 are arranged in a staggered manner, the firstreceiving electrode group 221 located in the firstnon-bending region 110 and the secondreceiving electrode group 222 located in the secondnon-bending region 120 are also arranged in a staggered manner. And the emission electrode groups extend along the second direction, so that the first emission electrodes arranged at the top among the plurality of first emission electrode groups in the firstnon-bending region 110 may be arranged in a straight line along the first direction. At this time, if the uppermost secondreceiving electrode group 222 in the secondnon-bending region 130 is collinear with the plurality of first transmitting electrodes, the overall occupied area of the touch electrode group can be saved, and the distance between the transmitting electrodes and the receiving electrodes can be reduced. Therefore, the touch electrode structure has good use performance.

According to the embodiment of the present invention, the specific positions and connection modes of the plurality of electrodes in the electrode groups of the first touch electrode structure and the second touch electrode structure are not particularly limited, for example, the plurality of electrodes in the same electrode group may be made of the same material on the same layer and connected through the connection wires. Alternatively, multiple electrodes in the same electrode group may be connected by means including, but not limited to, via jumpers. For example, taking the first touch electrode structure as an example, the electrodes in the first transmitting electrode set and the first receiving electrode set (e.g., the diamond-shaped electrode block shown in fig. 1) may be made of the same material. In order to avoid short-circuiting of the connection lines of the connection electrodes in the first transmission electrode group and the first reception electrode group at the projection intersection, an insulating block may be provided to overlap at a region where the projections of the connection lines of the first transmission electrode group and the connection lines of the first reception electrode group on the substrate overlap.

According to other embodiments of the present invention, referring to fig. 7 and 8, aconductive connection layer 500 may be disposed between the touch electrode structure (the firstreceiving electrode group 221 shown in the figure) and thesubstrate 100, an insulatinglayer 300 is disposed between theconductive connection layer 500 and the touch electrode structure, the transmitting electrode group and the receiving electrode group are disposed on the same layer, taking the first transmitting electrode group and the first receiving electrode group as an example, a plurality of transmitting electrodes in each first transmittingelectrode group 210 may be directly connected to each other, a plurality of receiving electrodes in each first receivingelectrode group 221 may be connected to theconductive connection layer 500 through vias penetrating through the insulatinglayer 300, so as to achieve connection between a plurality of receiving electrodes, theconductive connection layer 500 may be disconnected at thegap 223 shown in fig. 1, and the firsttransmitting electrode group 210 may be disposed on the same layer as the firstreceiving electrode group 221. Therefore, short circuit between the connecting line in the first transmitting electrode group and the connecting line of the first receiving electrode group can be avoided. Referring to fig. 8, the electrode blocks and the connection lines in the firstemitter electrode group 210 may be disposed in the same layer, and theconductive connection layer 500 may be formed by a patterning process to connect the connection lines between the plurality of first receiver electrodes in the first receiver electrode group. Alternatively, the plurality of receiving electrodes in each receiving electrode group may be directly connected to each other, and the plurality of transmitting electrodes in each transmitting electrode group may be connected to the conductive connecting layer through vias penetrating through the insulating layer, so as to connect the plurality of transmitting electrodes to each other (this is not shown in the figure).

For convenience of understanding, the method of preparing the touch substrate will be briefly described below. According to an embodiment of the present invention, referring to fig. 8, the method includes:

s100: providing a substrate

In this step, a substrate is provided. According to the utility model discloses an embodiment, the substrate has the bending zone and with adjacent first non-bending zone of bending zone and the non-bending zone of second. The specific material of the substrate is not particularly limited, and those skilled in the art can design the substrate according to the materials commonly used for the substrate in the touch substrate.

S200: forming touch electrode structure on substrate

In this step, a touch electrode structure is formed on the substrate. According to the utility model discloses an embodiment, touch-control electrode structure is including the first touch-control electrode structure that is located first non-bending area and the second touch-control electrode structure that is located the non-bending area of second, and first touch-control electrode structure includes a plurality of first transmitting electrode group and a plurality of first receiving electrode group, and second touch-control electrode structure includes a plurality of second transmitting electrode group and a plurality of second receiving electrode group, first transmitting electrode group with second transmitting electrode group all extends along the first direction, and first receiving electrode group and second electrode group all extend along the second direction, and first direction and second direction are crossing, and first receiving electrode group includes a plurality of first receiving electrodes of arranging along the first direction, and second receiving electrode group includes a plurality of second receiving electrodes of arranging along the first direction, and the bending area includes first receiving electrode and second receiving electrode at least. Therefore, the problems of mistaken touch of the display device and poor grounding of the whole machine can be effectively relieved, the touch display effect is improved, and the user experience is improved.

According to the utility model discloses an embodiment, a plurality of transmission electrode group in the touch-control electrode structure extend along the second direction to arrange in proper order in the first direction, transmission electrode group and receiving electrode group can be formed through following step: first, a conductive material layer is formed on a substrate. Subsequently, the conductive material layer is subjected to patterning processing based on a predetermined mask, forming a transmitting electrode group and a receiving electrode group. Thereby, the transmission electrode group and the reception electrode group can be formed simultaneously. Since the transmitting electrode group and the receiving electrode group are formed simultaneously by a predetermined mask patterning process, the shape of the opening of the mask is designed according to the shape and positional relationship of the transmitting electrode group and the receiving electrode group.

According to some embodiments of the present invention, in the process of forming the transmitting electrode group and the receiving electrode group, the opening of the mask can be adjusted to make the first receiving electrode group and the second receiving electrode group arranged in a collinear manner, and to make the portion of the first receiving electrode group extending into the bending region and the portion of the second receiving electrode group extending into the bending region have a gap therebetween, i.e. the first receiving electrode and the second receiving electrode located in the bending region are spaced apart from each other. Therefore, the part of the first receiving electrode group extending to the bending area is not connected with the part of the second receiving electrode group extending to the bending area, so that the problems of mistaken touch and poor grounding of the whole machine are solved.

The shapes of the receiving electrodes in the receiving electrode group, the shapes of the transmitting electrodes in the transmitting electrode group, the positional relationship between the transmitting electrodes and the receiving electrodes, and the length of the gap have been described in detail above, and are not described in detail herein.

According to other embodiments of the present invention, when the bending region has a plurality of first receiving electrodes and a plurality of second receiving electrodes, and the plurality of first receiving electrodes and the plurality of second receiving electrodes are disposed to intersect in the second direction, the openings of the mask can be adjusted during the formation of the transmitting electrode group and the receiving electrode group, so that the first receiving electrode group and the second receiving electrode group are sequentially and alternately arranged in the second direction to form the touch electrode structure as shown in fig. 3. Therefore, the part of the first receiving electrode group extending to the bending area is not connected with the part of the second receiving electrode group extending to the bending area, so that the problems of mistaken touch and poor grounding of the whole machine are solved, and the receiving electrode group has good service performance.

The positional relationship between the transmitting electrode and the receiving electrode, and the distance between the first receiving electrode and the second receiving electrode have been described in detail above, and are not described in detail here.

According to the utility model discloses an embodiment, in this step, before forming the touch electrode structure, can also form the electrically conductive articulamentum on the substrate in advance, then keep away from one side of substrate at the electrically conductive articulamentum and form the insulating layer, and form the via hole that runs through the insulating layer in the predetermined region of insulating layer, form the touch electrode structure in one side that the electrically conductive articulamentum was kept away from at the insulating layer at last, can directly link to each other between a plurality of transmitting electrode in every transmitting electrode group, can link to each other with the electrically conductive articulamentum through above-mentioned via hole between a plurality of receiving electrode in every receiving electrode group, realize being connected between a plurality of receiving. Or, the plurality of receiving electrodes in each receiving electrode group can be directly connected, and the plurality of transmitting electrodes in each transmitting electrode group can be connected with the conductive connecting layer through the via holes, so that the plurality of transmitting electrodes are connected.

In another aspect of the present invention, the utility model provides a touch display device. According to the utility model discloses an embodiment, this touch-control display device includes the touch-control base plate of preceding description. Therefore, the touch display device has all the features and advantages of the touch substrate described above, and will not be described herein again. In general, the touch display device has a good touch display effect, and the use experience of a user can be remarkably improved.

According to the utility model discloses an embodiment, referring to fig. 10, this touch-control display device includes: a display panel 2000 and a touch substrate 1000. The touch substrate 1000 is disposed on the light emitting side of the display panel 2000. Therefore, the touch display device has a good touch display effect, and the use experience of a user can be improved.

Referring to fig. 11 and 12, the touch display device may further include a touch chip. For example, referring to fig. 11, the first receiving electrode in the first touch electrode structure in the first non-bending region and the second receiving electrode in the second non-bending region may be connected to thesame touch chip 600, for example, the touch electrode structure in thedisplay region 140 may be connected to thetouch chip 600 at theperipheral trace region 150 through a connection line. Therefore, the touch structure in the touch display device can be controlled uniformly by onetouch chip 600. Alternatively, when theperipheral routing area 150 of the touch display device is not sufficient to support the channels of the plurality of touch electrodes, referring to fig. 12, the touch display device may include a primary touch chip (e.g., thetouch chip 600 shown in the figure) and asecondary touch chip 610, the primary touch chip is electrically connected to thesecondary touch chip 610, the first transmitting electrode set and the second transmitting electrode set (not shown in the figure), the first receiving electrode set may be electrically connected to theprimary touch chip 600, and the second receiving electrode set may be electrically connected to the secondary touch chip.

For convenience of understanding, the method of controlling the touch display device described above will be briefly described below. According to the utility model discloses an embodiment, when touch-control display device divides the screen display, makes second transmitting electrode group and second receiving electrode group in the non-bending zone of second all be in the off-state. Therefore, the problem of poor grounding of the whole display device can be relieved. Or, according to the other embodiments of the present invention, when the touch display device displays the split screen, the second transmitting electrode set in the second non-bending area is in the off state, the second receiving electrode set is in the on state, and the ground signal is applied to the second receiving electrode set. Therefore, the problem of poor grounding of the whole display device can be further solved, the touch display effect is further improved, and the user experience is improved.

Specifically, the first receiving electrode and the second receiving electrode in the first touch electrode structure in the first non-bending region may be connected to the same touch chip. That is, the method breaks the receiving electrode groups of two non-bending areas at two sides of the bending area, the receiving electrode group of each non-bending area independently enters a control system to be controlled and signal collected, and the point position is reported. Therefore, under the condition that the touch display device is flattened, simultaneous point reporting of the left screen and the right screen can be avoided, and the mutual influence of touch signals between two non-bending areas is relieved. The first receiving electrode and the second receiving electrode are connected to the same touch control chip, so that touch control signals on two sides can be better processed in a unified mode, signals reported by the two sides can reach a single report point through calibration processing, and the left screen and the right screen (namely two non-bending areas) are continuously scribed. When the touch display device is folded, the touch chip can be used for closing the auxiliary screen (namely one of the two non-bending areas), the touch electrodes in the area do not receive signals and are grounded or floated, and false alarm points of edges can be reduced through weakening of the edges of the touch chip.

Alternatively, when the peripheral routing area of the touch display device is not sufficient to support the channels of the plurality of touch electrodes, the first receiving electrode and the second receiving electrode may also be connected to the auxiliary touch chip and the main touch chip, respectively. The auxiliary touch chip and the main touch chip are controlled integrally. Therefore, the touch effect of the method can be further improved.

In the description of the present invention, the terms "upper", "lower", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention, but do not require the present invention to be constructed and operated in a specific orientation, and thus, cannot be construed as limiting the present invention.

Reference throughout this specification to the description of "one embodiment," "another embodiment," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. In addition, it should be noted that the terms "first" and "second" in this specification are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (9)

1. A touch substrate, comprising:

a substrate, and a touch electrode structure located on the substrate,

the touch substrate comprises a bending area, and a first non-bending area and a second non-bending area which are adjacent to the bending area, wherein the first non-bending area and the second non-bending area are configured to bend around the bending area;

the touch electrode structure comprises a first touch electrode structure positioned in the first non-bending area and a second touch electrode structure positioned in the second non-bending area, the first touch electrode structure comprises a plurality of first transmitting electrode groups and a plurality of first receiving electrode groups, the second touch electrode structure comprises a plurality of second transmitting electrode groups and a plurality of second receiving electrode groups, the first and second transmit electrode sets each extending in a first direction, the first and second receive electrode sets each extending in a second direction, the first direction and the second direction intersect, the first receiving electrode group includes a plurality of first receiving electrodes arranged in the first direction, the second receiving electrode group comprises a plurality of second receiving electrodes arranged along a first direction, and the bending area at least comprises the first receiving electrodes and the second receiving electrodes.

2. The touch substrate of claim 1, wherein the first receiving electrodes and the second receiving electrodes are made of the same layer of the same material, the first transmitting electrode group comprises a plurality of first transmitting electrodes, the second transmitting electrode group comprises a plurality of second transmitting electrodes, and the first transmitting electrodes and the second transmitting electrodes are made of the same layer of the same material.

3. The touch substrate of claim 1, wherein an orthographic projection of the first receiving electrode on the substrate at the bending region and an orthographic projection of the second receiving electrode on the substrate at the bending region are spaced apart from each other.

4. The touch substrate of claim 3, wherein the bending region has a plurality of the first receiving electrodes and a plurality of the second receiving electrodes, the plurality of the first receiving electrodes and the plurality of the second receiving electrodes are arranged along the second direction, and two of the second receiving electrodes and the first receiving electrode located between the two of the second receiving electrodes are arranged in a triangle.

5. The touch substrate of claim 4, wherein the first receiving electrode and the second receiving electrode in the bending region are both diamond-shaped electrode blocks, the first receiving electrode has a first edge, the second receiving electrode has a second edge, the first edge and the second edge are parallel and adjacent, and a distance between the adjacent first edge and the second edge is smaller than a square root of a length of the diamond-shaped electrode blocks along a diagonal of the first direction, which is 2/2 times.

6. The touch substrate of claim 3, wherein the bending region has a plurality of the first receiving electrodes and a plurality of the second receiving electrodes, the plurality of the first receiving electrodes and the plurality of the second receiving electrodes are arranged along the first direction, and a gap is formed between the second receiving electrodes of the adjacent first receiving electrodes.

7. The touch substrate of claim 6, wherein the first receiving electrode and the second receiving electrode in the bending region are both triangular electrode blocks, the first receiving electrode and the second receiving electrode in the non-bending region are both diamond electrode blocks, and a length of the gap between the first receiving electrode and the second receiving electrode in the bending region is less than 1/2 of a diagonal length of the diamond electrode blocks in the non-bending region along the first direction.

8. A touch display device, comprising the touch substrate according to any one of claims 1 to 7 and a display panel, wherein the touch substrate is located on a light-emitting side of the display panel.

9. The touch display device according to claim 8, further comprising a touch chip, wherein the first receiving electrode and the second receiving electrode in the first touch electrode structure in the first non-bending region are connected to a same touch chip, or further comprising a main touch chip and a sub-touch chip, the main touch chip is electrically connected to the sub-touch chip, the first transmitting electrode group and the second transmitting electrode group, the first receiving electrode group is electrically connected to the main touch chip, and the second receiving electrode group is electrically connected to the sub-touch chip.

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