CN113778262A - Touch substrate and touch display device - Google Patents
Touch substrate and touch display device Download PDFInfo
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- CN113778262A CN113778262A CN202111068192.6A CN202111068192A CN113778262A CN 113778262 A CN113778262 A CN 113778262A CN 202111068192 A CN202111068192 A CN 202111068192A CN 113778262 A CN113778262 A CN 113778262A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- Theoretical Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a touch substrate and a touch display device, wherein at least one touch signal line is designed into at least two first wires with a short wire structure, and the two first wires are connected through a connecting wire in a hole opening mode on an insulating layer, so that a complete touch signal line is formed.
Description
Technical Field
The invention relates to the technical field of touch display, in particular to a touch substrate and a touch display device.
Background
With the development of an Active-matrix organic light emitting diode (AMOLED) technology, the development of display devices has entered into an era of full-screen and narrow-frame, and in order to bring better use experience to users, full-screen, narrow-frame, high resolution, curling, wearing, folding, and the like will certainly become an important development direction of future AMOLEDs; in order to realize a lighter and thinner Panel to adapt to the later folding and curling products, a Flexible Multi-Layer On Cell (FMLOC) touch technology has been developed. As the market develops, the AMOLED technology is gradually applied from a small-sized electronic product to a large-sized electronic product. The application of FMLOC to large-sized electronic products is also a trend of development in the future. When the FMLOC is applied to a large-sized electronic product, a longer metal trace (touch signal line) is often required to connect a touch electrode inside a touch region and a peripheral driving chip (IC), and the longer metal trace is very likely to cause a large amount of Static electricity accumulation and release, i.e., cause electrostatic discharge (ESD), so as to reduce the yield of the product.
Disclosure of Invention
The touch substrate and the touch display device provided by the embodiment of the invention are used for reducing the static electricity accumulation capacity of the touch signal line in the manufacturing process and improving the yield of products.
An embodiment of the present invention provides a touch substrate, including:
the touch screen comprises a substrate base plate and a touch screen, wherein the substrate base plate is provided with a touch area and a non-touch area arranged around the touch area;
the touch electrode layer is positioned in a touch area of the substrate base plate;
the touch signal lines are positioned in a non-touch area of the substrate base plate and are electrically connected with the touch electrode layer; the at least one touch signal line comprises at least two first routing lines positioned on the same layer and a first spacing area positioned between the two first routing lines;
the orthographic projection of the insulating layer on the substrate base plate covers the orthographic projection of the first routing lines and the first spacing areas on the substrate base plate;
and the connecting line electrically connects the first wires positioned at two sides of the first interval area through a first via hole penetrating through the insulating layer.
Optionally, in the touch substrate provided in the embodiment of the present invention, the touch region further includes a bridge layer located between the substrate and the insulating layer, the touch electrode layer is located on a side of the insulating layer away from the substrate, and the bridge layer includes a plurality of bridge electrodes;
the touch electrode layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes which extend along different directions and are arranged in an insulating and crossed manner; the first touch electrode comprises a plurality of first touch electrode blocks, and the bridging electrode electrically connects the first touch electrode blocks through second via holes penetrating through the insulating layer.
Optionally, in the touch substrate provided in the embodiment of the present invention, the first trace and the bridge layer are disposed on the same layer, and the connection line and the touch electrode layer are disposed on the same layer.
Optionally, in the touch substrate provided in the embodiment of the present invention, the touch signal line further includes a second trace disposed on the same layer as the touch electrode layer, an extending direction of the second trace is the same as an extending direction of the first trace, and the second trace and the connecting line are integrated.
Optionally, in the touch substrate provided in the embodiment of the present invention, the connecting line and the bridging layer are disposed in the same layer, and the first trace and the touch electrode layer are disposed in the same layer.
Optionally, in the touch substrate provided in the embodiment of the present invention, the touch signal line further includes a second trace disposed on the same layer as the bridge layer, an extending direction of the second trace is the same as an extending direction of the first trace, and the second trace and the connecting line are integrated.
Optionally, in the touch substrate provided in the embodiment of the present invention, an orthogonal projection width of the second trace on the substrate is substantially the same as an orthogonal projection width of the first trace on the substrate.
Optionally, in the touch substrate provided in the embodiment of the present invention, the at least one second trace includes at least two sub-traces and a second spacing region located between the two sub-traces; the sub-wires on two sides of the second spacing region are electrically connected with the first wires through third via holes penetrating through the insulating layer.
Optionally, in the touch substrate provided in the embodiment of the present invention, the first spacing regions and the second spacing regions respectively located on two adjacent touch signal lines are staggered along the arrangement direction of the touch signal lines.
Optionally, in the touch substrate provided in the embodiment of the present invention, along an extending direction of the touch signal line, the first spacing regions and the second spacing regions on the same touch signal line are alternately arranged.
Optionally, in the touch substrate provided in the embodiment of the present invention, along the arrangement direction of each touch signal line, the first spacing regions and the second spacing regions on each touch signal line are located in the same row and are alternately arranged.
Optionally, in the touch substrate provided in the embodiment of the present invention, along the arrangement direction of each touch signal line, the first spacing region on each touch signal line is located in the same row, the second spacing region on each touch signal line is located in the same row, and the first spacing region and the second spacing region are located in different rows.
Optionally, in the touch substrate provided in the embodiment of the present invention, along an arrangement direction of each of the touch signal lines, first spacers located on each of the touch signal lines in the odd-numbered columns are located in a same row, second spacers located on each of the touch signal lines in the odd-numbered columns are located in a same row, first spacers located on each of the touch signal lines in the even-numbered columns are located in a same row, second spacers located on each of the touch signal lines in the even-numbered columns are located in a same row, the first spacers located on each of the touch signal lines in the odd-numbered columns and the first spacers located on each of the touch signal lines in the even-numbered columns are located in different rows, and the second spacers located on each of the touch signal lines in the odd-numbered columns and the second spacers located on each of the touch signal lines in the even-numbered columns are located in different rows.
Optionally, in the touch substrate provided in the embodiment of the present invention, orthographic projections of the first spacing region and the second spacing region on the same touch signal line on the substrate do not overlap.
Optionally, in the touch substrate provided in the embodiment of the present invention, the lengths of the first and second spacing regions along the extending direction of the touch signal line are the same, and the distances between the first and second spacing regions on the same touch signal line are the same.
Optionally, in the touch substrate provided in the embodiment of the present invention, a minimum distance between adjacent edges of the first via hole and the first spacer is less than 10um, and a minimum distance between adjacent edges of the third via hole and the second spacer is less than 10 um.
Correspondingly, the embodiment of the invention also provides a touch display device which comprises the touch substrate.
The embodiment of the invention has the following beneficial effects:
according to the touch substrate and the touch display device provided by the embodiment of the invention, at least one touch signal line is designed into at least two first wires with short wire structures, and the two first wires are connected through the connecting wire in a manner of opening a hole on the insulating layer, so that a complete touch signal line is formed.
Drawings
Fig. 1 is a schematic plan view of a touch substrate according to an embodiment of the present invention;
fig. 2 is a schematic partial cross-sectional structure view of a touch substrate according to an embodiment of the invention;
fig. 3 is a schematic partial cross-sectional view of a touch substrate according to an embodiment of the invention;
fig. 4 is a schematic partial cross-sectional structure view of a touch substrate according to an embodiment of the invention;
fig. 5 is a schematic partial cross-sectional structure view of a touch substrate according to an embodiment of the invention;
fig. 6 is a schematic partial cross-sectional structure view of a touch substrate according to an embodiment of the invention;
fig. 7 is a schematic partial cross-sectional view of a touch substrate according to an embodiment of the invention;
fig. 8 is a schematic partial cross-sectional view of a touch substrate according to an embodiment of the invention;
fig. 9 is a schematic plan view of a touch signal line of a touch substrate according to an embodiment of the invention;
fig. 10 is a schematic plan view of a touch signal line of a touch substrate according to an embodiment of the invention;
fig. 11 is a schematic plan view of a touch signal line of a touch substrate according to an embodiment of the invention;
fig. 12 is a schematic plan view of a touch display device according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following describes in detail a touch substrate and a touch display device provided in embodiments of the present invention with reference to the accompanying drawings. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The shapes and sizes of the various elements in the drawings are not to scale and are merely intended to illustrate the invention.
An embodiment of the present invention provides a touch substrate, as shown in fig. 1 to 3, where fig. 1 is a schematic plan view of the touch substrate, and fig. 2 and 3 are schematic cross-sectional views along a direction CC' in the drawings, the touch substrate includes:
the touch screen comprises a substrate base plate 1, wherein the substrate base plate 1 is provided with a touch area AA and a non-touch area BB arranged around the touch area AA;
the touch electrode layer 2 is positioned in a touch area AA of the substrate base plate 1;
a plurality of touch signal lines 3 located in the non-touch area BB of the substrate base plate 1, the touch signal lines 3 being electrically connected to the touch electrode layer 2; the at least one touch signal line 3 includes at least two first traces (fig. 2 takes two traces 31 and 32 as an example) located in the same layer and a first spacer 33 located between the two first traces (31 and 32);
an insulating layer 4, wherein the orthographic projection of the insulating layer 4 on the substrate 1 covers the orthographic projection of the first routing lines (31 and 32) and the first spacing areas 33 on the substrate 1;
and a connection line 5, wherein the connection line 5 electrically connects the first traces (31 and 32) at two sides of the first interval area 33 through a first via 41 penetrating the insulating layer 4.
According to the touch substrate provided by the embodiment of the invention, at least one touch signal line is designed into the first wires of at least two short wire structures, and the two first wires are connected through the connecting wire in a manner of opening a hole on the insulating layer, so that a complete touch signal line is formed.
In specific implementation, as shown in fig. 4, fig. 4 is a schematic cross-sectional view along a DD' direction in fig. 1, the touch area AA further includes a bridging layer 6 located between the substrate 1 and the insulating layer 4, the touch electrode layer 2 is located on a side of the insulating layer 4 away from the substrate 1, and the bridging layer 6 includes a plurality of bridging electrodes 61;
as shown in fig. 1, the touch electrode layer 2 includes a plurality of first touch electrodes 21 and a plurality of second touch electrodes 22 extending in different directions and arranged in an insulating and intersecting manner; as shown in fig. 4, the first touch electrode 21 includes a plurality of first touch electrode blocks 211, and the bridge electrode 61 electrically connects the first touch electrode blocks 211 through second via holes 42 penetrating through the insulating layer 4.
In a specific implementation, in the touch substrate provided in the embodiment of the present invention, the first touch electrode 21 is a touch driving electrode, and the second touch electrode 22 is a touch sensing electrode; or
The first touch electrode 21 is a touch sensing electrode, and the second touch electrode 22 is a touch driving electrode.
In specific implementation, in the touch substrate provided in the embodiment of the present invention, as shown in fig. 2, the first traces (31 and 32) located in the non-touch area BB may be disposed in the same layer as the bridging layer 6 located in the touch area AA, so that the original patterning pattern is changed only when the bridging layer 6 is formed, the patterns of the first traces (31 and 32) and the bridging layer 6 may be formed through one patterning process, and a process for separately preparing the first traces (31 and 32) is not required to be added, which may simplify a preparation process flow, save production cost, and improve production efficiency; the connecting wire 5 located in the non-touch area BB can be arranged on the same layer as the touch electrode layer 2 located in the touch area AA, so that the connecting wire 5 and the touch electrode layer 2 can be formed through one-time composition process only by changing the original composition pattern when the touch electrode layer 2 is formed, the process for independently preparing the connecting wire 5 is not needed, the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved.
Specifically, as shown in fig. 2, the touch signal line 3 adopts Metal1 (bridge layer 6), after the first trace 31 reaches a certain length, Metal2 (touch electrode layer 2) can be used as a bridge Metal, and the Metal2 is connected to the Metal1 through the insulating layer 4 by punching and jumping via the insulating layer 4 after the Metal2 is connected for a short distance, so that charges accumulated in the Metal1 can be released, and ESD can be prevented.
In a specific implementation, for a large-sized display product, the longer the touch signal line trace may cause the resistance to be too large, which affects the touch sensitivity, so in the touch substrate provided in the embodiment of the present invention, as shown in fig. 5, fig. 5 is a structure based on the structure of fig. 2, the touch signal line 3 further includes a second trace 34 disposed on the same layer as the touch electrode layer 2, the extending direction of the second trace 34 is the same as the extending direction of the first trace (31 and 32), and the second trace 34 and the connection line 5 are an integral structure. Therefore, the touch signal line 3 adopts Metal1 and Metal2 double-layer Metal wires (a first wire and a second wire), and the insulating layer 4 is punched to communicate the double-layer Metal wires, so that the resistance of the touch signal line 3 can be reduced, and the resistance of the touch signal line 3 can be reduced on the basis of preventing ESD. Moreover, since the second wire 34 and the connecting wire 5 are integrated, the second wire 34, the connecting wire 5 and the touch electrode layer 2 can be formed by a one-step patterning process, which further reduces the manufacturing process.
In specific implementation, in the touch substrate provided in the embodiment of the present invention, as shown in fig. 3, the connecting lines 5 located in the non-touch area BB may be disposed on the same layer as the bridge layer 6 located in the touch area AA, so that the connecting lines 5 and the bridge layer 6 may be formed by one-step patterning process only by changing the original patterning pattern when the bridge layer 6 is formed, and a process for separately preparing the connecting lines 5 is not required to be added, which may simplify the preparation process flow, save the production cost, and improve the production efficiency; the first wires (31 and 32) located in the non-touch area BB can be arranged on the same layer as the touch electrode layer 2 located in the touch area AA, so that the first wires (31 and 32) and the touch electrode layer 2 can be formed through one-step composition process only by changing the original composition pattern when the touch electrode layer 2 is formed, and a process for separately preparing the first wires (31 and 32) is not required to be added, so that the preparation process flow can be simplified, the production cost is saved, and the production efficiency is improved.
Specifically, as shown in fig. 3, the touch signal line 3 adopts Metal2 (touch electrode layer 2), after the first trace 31 reaches a certain length, Metal1 (bridge layer 6) can be used as a bridging Metal, and a punching jumper connection is performed through the insulating layer 4, and after the Metal1 is connected for a short distance, the Metal1 is punched through the insulating layer 4 and then jumps back to the Metal2, so that charges accumulated in the Metal2 can be released, and ESD can be prevented.
In specific implementation, for a large-sized display product, the longer touch signal line trace may cause an excessively large resistance, which affects touch sensitivity, so in the touch substrate provided in the embodiment of the present invention, as shown in fig. 6, fig. 6 is a structure based on the structure of fig. 3, the touch signal line 3 further includes a second trace 34 disposed on the same layer as the bridging layer 6, an extending direction of the second trace 34 is the same as an extending direction of the first trace (31 and 32), and the second trace 34 and the connection line 5 are an integrated structure. Therefore, the touch signal line 3 adopts Metal1 and Metal2 double-layer Metal wires (a first wire and a second wire), and the insulating layer 4 is punched to communicate the double-layer Metal wires, so that the resistance of the touch signal line 3 can be reduced, and the resistance of the touch signal line 3 can be reduced on the basis of preventing ESD. Moreover, since the second wire 34 and the connecting wire 5 are an integral structure, the second wire 34, the connecting wire 5 and the bridging layer 6 can be formed by a single patterning process, which further reduces the manufacturing process.
In specific implementation, in the touch substrate provided in the embodiment of the present invention, as shown in fig. 5 and fig. 6, an orthogonal projection width of the second trace 34 on the substrate 1 is substantially the same as an orthogonal projection width of the first trace (31 and 32) on the substrate 1. In this way, the second trace 34 and the first trace (31 and 32) form the touch signal line 3 integrally, and the touch electrode layer 2 is electrically connected to a peripheral driving chip (IC) to realize signal transmission. Specifically, the forward projection widths mentioned in the embodiments of the present invention are substantially the same, which means that they may be completely the same or have a certain error.
In specific implementation, in the touch substrate provided in the embodiment of the present invention, as shown in fig. 7 and fig. 8, fig. 7 is a structure on the basis of the structure of fig. 5, fig. 8 is a structure on the basis of the structure of fig. 6, and the at least one second trace 34 includes at least two sub-traces (taking two sub-traces 341 and 342 as an example) and a second spacing region 343 located between the two sub-traces (341 and 342); the sub-traces (341 and 342) located at both sides of the second spaced region 343 are electrically connected to the first traces (31 and 32) through the third via 43 penetrating the insulating layer 4. Specifically, as shown in fig. 7, the touch signal line 3 is formed by using Metal2 and Metal1 as double-layer metals, and holes are formed through the insulating layer 4, so that the double-layer Metal wirings (the first wiring and the second wiring) are communicated, thereby reducing the resistance of the touch signal line and improving the touch effect. After the Metal1 wire (the first wire 31) reaches a certain length, the Metal1 can be subjected to wire breaking processing, and the Metal1 wire is connected to the Metal2 (the connecting wire 5) through punching again, and after the Metal2 wire (the sub-wire 341) reaches a certain length, the Metal2 wire can be subjected to wire breaking processing, and the Metal2 wire is connected to the Metal1 wire (the first wire 32) through punching again, so that the Metal1 and the Metal2 are alternately subjected to wire breaking, charges accumulated on the two Metal layers are released, and the occurrence of ESD is further prevented. As shown in fig. 8, the touch signal line 3 is formed by using Metal2 and Metal1 as double-layer metals, and holes are formed through the insulating layer 4, so that the double-layer Metal traces (the first trace and the second trace) are communicated, thereby reducing the resistance of the touch signal line and improving the touch effect. After the Metal1 wire (sub-wire 341) reaches a certain length, the Metal1 can be broken and connected to the Metal2 (first wire 31) by punching again, and after the Metal2 wire (first wire 31) reaches a certain length, the Metal2 can be broken and connected to the Metal1 (connecting wire 5) by punching again, so that the Metal1 and the Metal2 are alternately broken, charges accumulated on the two Metal layers are released, and the occurrence of ESD is further prevented.
In specific implementation, as shown in fig. 9 to 11, fig. 9 to 11 are schematic top views of the touch signal lines 3 in fig. 1 and 7, respectively, and the first spacing regions 33 and the second spacing regions 343 on two adjacent touch signal lines 3 are staggered along the arrangement direction X of the touch signal lines 3. Therefore, the accumulated charges can be released from the Metal1 and Metal2 Metal layers, and the occurrence of ESD can be prevented.
In specific implementation, in the touch substrate provided in the embodiment of the invention, as shown in fig. 9 to 11, the first spacing regions 33 and the second spacing regions 343 on the same touch signal line 3 are alternately arranged along the extending direction Y of the touch signal line 3. Therefore, the Metal1 and Metal2 Metal layers can be disconnected alternately, charges accumulated on the two Metal layers are released, and the occurrence of ESD is further prevented.
In specific implementation, in the touch substrate provided in the embodiment of the invention, as shown in fig. 9, along the arrangement direction X of each touch signal line 3, the first spacing regions 33 on the touch signal lines 3 in the odd-numbered columns are located in the same row, the second spacing regions 344 on the touch signal lines 3 in the odd-numbered columns are located in the same row, the first spacing regions 33 on the touch signal lines 3 in the even-numbered columns are located in the same row, the second spacing regions 343 on the touch signal lines 3 in the even-numbered columns are located in the same row, the first spacing regions 33 on the touch signal lines 3 in the odd-numbered columns and the first spacing regions 33 on the touch signal lines 3 in the even-numbered columns are located in different rows, and the second spacing regions 343 on the touch signal lines 3 in the odd-numbered columns and the second spacing regions 343 on the touch signal lines in the even-numbered columns are located in different rows.
In specific implementation, in the touch substrate provided in the embodiment of the invention, as shown in fig. 10, the first spacing regions 33 and the second spacing regions 343 on each touch signal line 3 are located in the same row and are alternately arranged along the arrangement direction X of each touch signal line 3.
In specific implementation, in the touch substrate provided in the embodiment of the invention, as shown in fig. 11, along the arrangement direction X of each touch signal line, the first spacing regions 33 on each touch signal line 3 are located in the same row, the second spacing regions 343 on each touch signal line 3 are located in the same row, and the first spacing regions 33 and the second spacing regions 343 are located in different rows. This can simplify the manufacturing process.
It should be noted that, the three arrangement manners of the first spacing region 33 and the second spacing region 343 on each touch signal line 3 illustrated in fig. 9-11 provided by the embodiment of the present invention are not limited to the embodiments of the present invention, and all of them fall within the protection scope of the embodiment of the present invention as long as the Metal1 and the Metal2 Metal layers are alternately disconnected, so that the charges accumulated in the two Metal layers can be released, and the occurrence of ESD can be further prevented.
In specific implementation, in the touch substrate provided in the embodiment of the invention, as shown in fig. 9 to 11, the lengths of the first spacing region 33 and the second spacing region 343 in the extending direction Y of the touch signal line 3 are the same, and the distance between the first spacing region 33 and the second spacing region 343 on the same touch signal line 3 is the same. Specifically, the same length and the same distance in the embodiment of the present invention mean approximately the same, not exactly the same, and there may be some error due to the process influence.
In specific implementation, as shown in fig. 7 and 8, in the touch substrate provided in the embodiment of the present invention, a minimum distance d1 between adjacent edges of the first via hole 41 and the first spacer 33 is less than 10um, and a minimum distance d2 between adjacent edges of the third via hole 43 and the second spacer 343 is less than 10 um.
Therefore, the embodiment of the invention adopts Metal1 and Metal2 double-layer Metal wires as the touch signal wires, because the resistance is too large due to the longer touch signal wire of the large-size display product, the resistance can be well reduced by the double-layer Metal wires, and the touch effect is improved. The touch signal line is too long to possibly cause ESD, so that the double-layer lines are alternately disconnected and connected to another layer of Metal through the insulating layer punching, for example, Metal1 is disconnected and connected to Metal2 through the via hole, and therefore the problem that the length of the same Metal line is not too long to generate ESD is solved, and the problem that the touch performance is reduced due to obvious resistance increase is solved.
Based on the same inventive concept, an embodiment of the present invention further provides a touch display device, including the touch substrate provided in the embodiment of the present invention. The implementation of the display device can be seen in the above embodiments of the touch substrate, and repeated descriptions are omitted.
In specific implementation, as shown in fig. 12, the display device provided in the embodiment of the present invention further includes a driving chip (IC), one end of the touch signal line 3 is electrically connected to the touch electrode layer 2, and the other end of the touch signal line 3 is electrically connected to the driving chip (IC), so as to implement signal transmission.
In practice, the display device provided by the embodiment of the present invention further includes other functional film layers known to those skilled in the art, and will not be described in detail herein.
The touch display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like.
According to the touch substrate and the touch display device provided by the embodiment of the invention, at least one touch signal line is designed into at least two first wires with short wire structures, and the two first wires are connected through the connecting wire in a manner of opening a hole on the insulating layer, so that a complete touch signal line is formed.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (16)
1. A touch substrate, comprising:
the touch screen comprises a substrate base plate and a touch screen, wherein the substrate base plate is provided with a touch area and a non-touch area arranged around the touch area;
the touch electrode layer is positioned in a touch area of the substrate base plate;
the touch signal lines are positioned in a non-touch area of the substrate base plate and are electrically connected with the touch electrode layer; the at least one touch signal line comprises at least two first routing lines positioned on the same layer and a first spacing area positioned between the two first routing lines;
the orthographic projection of the insulating layer on the substrate base plate covers the orthographic projection of the first routing lines and the first spacing areas on the substrate base plate;
and the connecting line electrically connects the first wires positioned at two sides of the first interval area through a first via hole penetrating through the insulating layer.
2. The touch substrate of claim 1, wherein the touch area further comprises a bridge layer located between the substrate base and the insulating layer, the touch electrode layer is located on a side of the insulating layer facing away from the substrate base, and the bridge layer comprises a plurality of bridge electrodes;
the touch electrode layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes which extend along different directions and are arranged in an insulating and crossed manner; the first touch electrode comprises a plurality of first touch electrode blocks, and the bridging electrode electrically connects the first touch electrode blocks through second via holes penetrating through the insulating layer.
3. The touch substrate of claim 2, wherein the first trace and the bridge layer are disposed on the same layer, and the connection line and the touch electrode layer are disposed on the same layer.
4. The touch substrate of claim 3, wherein the touch signal line further includes a second trace disposed on the same layer as the touch electrode layer, the second trace extends in the same direction as the first trace, and the second trace and the connection line are integrated.
5. The touch substrate of claim 2, wherein the connecting lines and the bridge layer are disposed on the same layer, and the first traces and the touch electrode layer are disposed on the same layer.
6. The touch substrate of claim 5, wherein the touch signal line further includes a second trace disposed on the same layer as the bridge layer, an extending direction of the second trace is the same as an extending direction of the first trace, and the second trace and the connecting line are integrated.
7. The touch substrate of claim 4 or 6, wherein an orthographic projection width of the second trace on the substrate is substantially the same as an orthographic projection width of the first trace on the substrate.
8. The touch substrate according to claim 4 or 6, wherein the at least one second trace comprises at least two sub-traces and a second spacing region located between the two sub-traces; the sub-wires on two sides of the second spacing region are electrically connected with the first wires through third via holes penetrating through the insulating layer.
9. The touch substrate of claim 8, wherein the first spacing regions and the second spacing regions on two adjacent touch signal lines are staggered along the arrangement direction of the touch signal lines.
10. The touch substrate of claim 9, wherein the first spacer regions and the second spacer regions are alternately disposed on a same touch signal line along an extending direction of the touch signal line.
11. The touch substrate of claim 9, wherein the first spacer regions and the second spacer regions on each of the touch signal lines are alternately arranged in a same row along an arrangement direction of the touch signal lines.
12. The touch substrate of claim 9, wherein along an arrangement direction of the touch signal lines, the first spacer regions on the touch signal lines are in a same row, the second spacer regions on the touch signal lines are in a same row, and the first spacer regions and the second spacer regions are in different rows.
13. The touch substrate of claim 9, wherein, along an arrangement direction of the touch signal lines, first spacers located on the touch signal lines in odd-numbered rows are located in a same row, second spacers located on the touch signal lines in odd-numbered rows are located in a same row, first spacers located on the touch signal lines in even-numbered rows are located in a same row, second spacers located on the touch signal lines in even-numbered rows are located in a same row, the first spacers located on the touch signal lines in odd-numbered rows and the first spacers located on the touch signal lines in even-numbered rows are located in different rows, and the second spacers located on the touch signal lines in odd-numbered rows and the second spacers located on the touch signal lines in even-numbered rows are located in different rows.
14. The touch substrate of any one of claims 9-13, wherein the first and second spacer regions have the same length along the extending direction of the touch signal line, and the first and second spacer regions on the same touch signal line have the same distance therebetween.
15. The touch substrate of any one of claims 9-13, wherein a minimum distance between adjacent edges of the first via and the first spacer is less than 10um, and a minimum distance between adjacent edges of the third via and the second spacer is less than 10 um.
16. A touch display device comprising the touch substrate according to any one of claims 1 to 15.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111068192.6A CN113778262A (en) | 2021-09-13 | 2021-09-13 | Touch substrate and touch display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111068192.6A CN113778262A (en) | 2021-09-13 | 2021-09-13 | Touch substrate and touch display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113778262A true CN113778262A (en) | 2021-12-10 |
Family
ID=78842943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111068192.6A Pending CN113778262A (en) | 2021-09-13 | 2021-09-13 | Touch substrate and touch display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113778262A (en) |
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2021
- 2021-09-13 CN CN202111068192.6A patent/CN113778262A/en active Pending
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