CN111427475A - Touch module, touch display screen and manufacturing method of touch display screen - Google Patents
Touch module, touch display screen and manufacturing method of touch display screen Download PDFInfo
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- CN111427475A CN111427475A CN202010222751.3A CN202010222751A CN111427475A CN 111427475 A CN111427475 A CN 111427475A CN 202010222751 A CN202010222751 A CN 202010222751A CN 111427475 A CN111427475 A CN 111427475A
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
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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
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
Abstract
The invention discloses a touch module, a touch display screen and a manufacturing method of the touch display screen, wherein the touch module comprises: the touch layer is of a single-layer structure and comprises n rows of touch units, each row of touch units comprises a first unit and a second unit, each first unit comprises a row of first electrode rows and m first electrode routing lines, each first electrode row comprises m first electrodes, each first electrode routing line is connected with one first electrode respectively to form m first signal lines, each second unit comprises a row of second electrode rows and j second electrode routing lines, each second electrode row comprises m groups of second electrode units, m groups of second electrode units are arranged opposite to m first electrodes one by one, each group of second electrode units comprises j second electrodes, and each second electrode routing line is connected with one second electrode in each group of second electrode units respectively to form j second signal lines. The touch module has the advantages of small thickness, less manufacturing process, easy manufacture and higher product yield.
Description
Technical Field
The invention relates to the technical field of touch display screens, in particular to a touch module, a touch display screen and a manufacturing method of the touch display screen.
Background
Some touch display screens in the related art include a display module and a touch module disposed on the display module, and electrodes and wires in the touch module are usually designed in a mutually-compatible multi-layer manner, so that the touch display screen has a relatively thick thickness, a relatively large number of required processes, a complex manufacturing process, and a relatively low product yield.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a touch module which is small in thickness, small in manufacturing process, easy to manufacture and high in product yield.
The invention further provides a touch display screen with the touch module.
The invention further provides a manufacturing method of the touch display screen.
The touch module according to the first aspect of the present invention includes: the touch control layer is of a single-layer structure and comprises n rows of touch control units which are sequentially arranged along a first direction, each row of touch control units comprises a first unit and a second unit which are sequentially arranged along the first direction, each first unit comprises a row of first electrode rows and m first electrode routing wires, each first electrode row comprises m first electrodes which are sequentially arranged along a second direction, each first electrode routing wire is respectively connected with one first electrode to form m first signal wires, and the second direction is crossed with the first direction; the second unit comprises a row of second electrode rows and j second electrode routing lines, the second electrode rows comprise m groups of second electrode units which are sequentially arranged along the second direction, the m groups of second electrode units and the m first electrodes are arranged oppositely one by one along the first direction, each group of second electrode units comprises j second electrodes which are sequentially arranged along the second direction, and each second electrode routing line is respectively connected with one second electrode in each group of second electrode units to form j second signal lines.
The touch module according to the first aspect of the present invention has a small thickness, a small number of processes, an easy manufacturing process, and a high product yield.
In some embodiments, the widths of m first electrodes in the first electrode column decrease sequentially along the second direction.
In some embodiments, the width sides of the m first electrodes in the first unit are aligned, and the m first electrode traces are all located on the same width side of the first electrode column.
In some embodiments, the center positions of the j second electrodes in the second electrode unit are sequentially shifted in the first direction along the second direction.
In some embodiments, the widths of the j second electrodes in the second electrode unit are the same, and the distance between the center positions of every two adjacent second electrodes in the first direction is the same.
In some embodiments, each group of the second electrode units in the second electrode column has the same structure, and the second electrode trace is connected to the second electrodes in the same sequence along the second direction in each group of the second electrode units.
In some embodiments, j of the second electrodes in each group of the second electrode units are sequentially a first sequential electrode to a j-th sequential electrode along the order of the second direction, j of the second electrode traces in the second units are respectively a first trace to a second trace, the first trace is connected to the first sequential electrode in each group of the second electrode units, the j-th trace is connected to the j-th sequential electrode in each group of the second electrode units, and the first trace and the j-th trace are respectively located on two sides of the width of the second electrode column.
In some embodiments, when j > 2 and 1 < x < j, the xth trace in the second unit is connected to the xth-order electrodes in each group of the second electrode units, the xth trace passes through between every two adjacent second electrode units to be respectively connected to the adjacent two xth-order electrodes, and the xth trace is input and connected from one side of the width of each xth-order electrode and output and connected from the other side of the width of each xth-order electrode.
In some embodiments, the structure of each column of the touch units in the touch layer is the same.
In some embodiments, the touch layer is a single-layer metal grid, and the first electrode, the first electrode trace, the second electrode, and the second electrode trace are all formed by the metal grid.
In some embodiments, the metal grid is comprised of a plurality of grid cells, some of which have cut-outs to prevent shorting.
In some embodiments, the grid cells are polygonal grids, and the break openings are formed on straight side edges of the grid cells.
The touch display screen according to the second aspect of the present invention includes a display module and a touch module, the display module includes an encapsulation layer, the touch module is the touch module according to the first aspect of the present invention, and the touch layer is disposed on the encapsulation layer.
According to the touch display screen of the second aspect of the present invention, by providing the touch module of the first aspect of the present invention, the touch display screen has a small thickness, a small number of processes, an easy manufacturing process, and a high product yield.
According to the manufacturing method of the touch display screen of the embodiment of the third aspect of the invention, the touch display screen is the touch display screen of the embodiment of the second aspect of the invention, and the manufacturing method comprises the following steps: and manufacturing the packaging layer, and manufacturing a single-layer metal grid on the packaging layer to form the touch layer.
According to the manufacturing method of the touch display screen in the embodiment of the third aspect of the invention, the manufacturing is simple and convenient, the production efficiency is high, and the yield is high.
In some embodiments, the metal mesh is fabricated on the encapsulation layer using an exposure process or a screen printing process.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a schematic plan view of an arrangement of electrodes and traces of a touch layer according to an embodiment of the invention;
FIG. 2 is a schematic plan view of one of the rows of touch units shown in FIG. 1;
FIG. 3 is a partial enlarged view at M1 shown in FIG. 2;
FIG. 4 is a partial enlarged view at M2 shown in FIG. 3;
fig. 5 is a schematic partial stacked view of a partial structure of a touch display screen according to an embodiment of the invention.
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 or similar 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 illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.
Next, a touch module a, a touch display screen 1000 and a method for manufacturing the touch display screen 1000 according to an embodiment of the invention are described with reference to the drawings.
Fig. 1 is a schematic plan view of an arrangement of electrodes and traces of a touch layer 100 according to an embodiment of the invention. As shown in fig. 1, the touch layer 100 includes N rows of touch units 10 sequentially arranged along a first direction F1 (i.e., a direction from left to right as shown in fig. 1), where the N rows of touch units 10 sequentially respectively include TG1 to TGn along the first direction F1, and when the touch resolution of the touch module a is set to M rows and N columns, N is 2N. In the embodiment of the invention, the touch layer 100 is a single-layer structure, so that n rows of touch units 10 are disposed in the same layer.
Fig. 2 is a schematic plan view of one touch unit 10 shown in fig. 1, and as shown in fig. 2, each row of touch units 10 includes the following touch units arranged in sequence along a first direction F1 (a direction from left to right as shown in fig. 2): the first unit 1 and the second unit 2 are both arranged in the same layer in the n rows of touch units 10 because the touch layer 100 has a single-layer structure.
As shown in fig. 2, the first unit 1 includes a column of first electrode columns 1a and m first electrode traces 1b, the first electrode column 1a includes m first electrodes 1a1 sequentially arranged along a second direction F2 (from top to bottom as shown in fig. 2), each first electrode trace 1b is respectively connected to one first electrode 1a1 to form m first signal lines, wherein the second direction F2 intersects the first direction F1, such as perpendicularly, or at an acute angle, or at an obtuse angle. In short, m first electrodes 1a1 coexist in the row direction (from top to bottom as shown in fig. 2), and m first electrodes 1a1 are connected to m first electrode traces 1b in a one-to-one correspondence, that is, one first electrode 1a1 is connected to one first electrode trace 1b to form one first signal line, so that m first electrode traces 1b can form m first signal lines.
As shown in fig. 2, the second unit 2 includes a column of second electrode columns 2a and j second electrode traces 2b, the second electrode column 2a includes M groups of second electrode units 2a0 sequentially arranged along a second direction F2 (from top to bottom as shown in fig. 2), the M groups of second electrode units 2a0 and the M first electrodes 1a1 are oppositely arranged along the first direction F1, each group of second electrode units 2a0 includes j second electrodes 2a1 sequentially arranged along the second direction F2, each second electrode trace 2b is respectively connected to one second electrode 2a1 in each group of second electrode units 2a0 to form j second signal lines, M ═ mj, j ≧ 2.
In short, in the column direction (from left to right as shown in fig. 2), each first electrode 1a1 corresponds to j second electrodes 2a1, then M first electrodes 1a1 correspond to mj second electrodes 2a1, so that M equals mj, and j second electrodes 2a1 in each group of second electrode units 2a0 are respectively connected to j second electrode traces 2b in a one-to-one correspondence, so that each second electrode trace 2b is respectively connected to one second electrode 2a1 in each group of second electrode units 2a0, so that each second electrode trace 2b is simultaneously connected to M second electrodes 2a1 to form one second signal line, and therefore j second electrode traces 2b can form j second signal lines.
Based on the above discussion, as shown in fig. 1 and fig. 2, in each column of touch units 10, there are m first electrodes 1a1, mj second electrodes 2a1, m first electrode traces 1b, j second electrode traces 2b, so that when the touch layer 100 has n columns of touch units 10, there are: n (m + j) touch electrode routing lines and n (m + mj) touch electrodes. Therefore, according to the touch layer 100 of the embodiment of the invention, since the number of the touch electrode traces (including the first electrode trace 1b and the second electrode trace 2b) is smaller, when the touch layer 100 is a single-layer structure, the area occupied by the touch electrode traces is smaller, and the available space of the touch electrodes (including the first electrode 1a1 and the second electrode 2a1) is larger, so that the touch precision of the touch module a can be improved.
It can be understood that one of the first electrode 1a1 and the second electrode 2a1 is a touch transmitting electrode and the other is a touch receiving electrode, and similarly, one of the first electrode trace 1b and the second electrode trace 2b is a touch transmitting electrode trace and the other is a touch receiving electrode trace. For example, when the first electrode 1a1 is a touch transmitting electrode, the second electrode 2a1 is a touch receiving electrode, the first electrode trace 1b is a touch transmitting electrode trace, and the second electrode trace 2b is a touch receiving electrode trace; for another example, when the second electrode 2a1 is a touch transmitting electrode, the first electrode 1a1 is a touch receiving electrode, the second electrode trace 2b is a touch transmitting electrode trace, and the first electrode trace 1b is a touch receiving electrode trace.
Therefore, in the embodiment of the present invention, each row of the touch units 10 includes a touch transmitting electrode, a touch receiving electrode, a touch transmitting electrode trace and a touch receiving electrode trace, and since the touch layer 100 is a single-layer structure, all the touch transmitting electrodes, the touch receiving electrodes, the touch transmitting electrode traces and the touch receiving electrode traces in the touch layer 100 are all disposed in the same layer, so as to greatly reduce the thickness of the touch layer 100, so that the touch layer 100 has fewer processes, is easy to manufacture, and has a higher product yield.
In summary, the touch layer 100 according to the embodiment of the invention adopts a single layer design, so that the thickness of the touch module a is thinner, the required manufacturing process is less, the manufacturing is easy, and the product yield is higher. Moreover, by arranging the first electrode 1a1 and the second electrode 2a1 in the above manner, the total number of the first electrode trace 1b and the second electrode trace 2b can be reduced, so that for the touch layer 100 with a single-layer structure, the distribution area of the first electrode 1a1 and the second electrode 2a1 can be increased, and the touch accuracy of the touch module a can be improved.
For simplicity of description, the following description will use the first electrode 1a1 as a touch transmitting electrode, the second electrode 2a1 as a touch receiving electrode, the first electrode trace 1b as a touch transmitting electrode trace, and the second electrode trace 2b as a touch receiving electrode trace, as an example, after reading the technical solution of the present invention, it is obvious that a specific implementation scheme of the second electrode 2a1 as a touch transmitting electrode, the first electrode 1a1 as a touch receiving electrode, the second electrode trace 2b as a touch transmitting electrode trace, and the first electrode trace 1b as a touch receiving electrode trace is not repeated herein.
In some embodiments of the invention, as shown in FIG. 2, for the ith touch unit 10(1 ≦ i ≦ n, TGi shown in FIG. 2), the widths of the m first electrodes 1a1 in the first electrode column 1a decrease sequentially along the second direction F2 (from top to bottom as shown in FIG. 2).
For example, in the example shown in FIG. 2, for the ith column of touch units 10, m first electrodes 1a1 arranged in the first electrode column 1a sequentially along the second direction F2 are respectively an electrode TXI-1 and an electrode TXI-2 … …, wherein the width of the electrode TXI-1 is greater than that of the electrode TXI-2, and the width of the electrode TXI-2 is greater than that of the electrode TXI-m. It should be noted that, in the specific example shown in fig. 2, m is 3, but the present invention is not limited thereto, and it is obvious that all embodiments of m ≧ 2 can be understood by those skilled in the art after reading the scheme of the present application.
Therefore, since the widths of the m first electrodes 1a1 in the first electrode column 1a can be sequentially reduced along the second direction F2, the first electrode traces 1b can be disposed by using the reduced width space of the first electrodes 1a1, and it is ensured that the m first electrode traces 1b can be respectively and correspondingly connected with the m first electrodes 1a 1. It should be noted that, the width of the first electrode 1a1 is decreased to form a touch blind area, so as to illustrate that the touch blind areas of the first electrode row 1a are sequentially increased along the second direction F2, in order to avoid affecting the touch effect, in the embodiment of the present invention, one first electrode 1a1 is opposite to the j second electrodes 2a1 along the first direction F1, so that the number of the first electrodes 1a1 can be decreased, thereby reducing the touch blind area to a certain extent and ensuring the touch effect.
In addition, the width of the first electrode routing 1b can be reduced in a matched manner, so that the touch blind area is further reduced, and the touch effect is better ensured. For example, in some embodiments of the present invention, the maximum ratio of the touch dead zone to the touch electrode width can be reduced to less than 15% by reducing the number of the first electrodes 1a1 and reducing the width of the first electrode traces 1b, so as to effectively ensure the touch effect. In addition, it should be noted that, in the description of the present invention, the width of the first electrode 1a1, the width of the second electrode 2a1, the width of the first electrode trace 1b, and the width of the portion of the second electrode trace 2b extending along the second direction F2 all refer to the width in the first direction F1, and the width of the portion of the second electrode trace 2b extending along the first direction F1 refers to the width in the second direction F2.
It should be noted that: the ratio of the width of the first electrode trace 1b to the width of the widest first electrode 1a1 is not limited, and for example, may be calculated according to a value of m, for example, in some specific examples, the width of the widest first electrode 1a1 may be about 4mm, the width of each first electrode trace 1b is not less than 30 μm, and the value of m may be between 2 to 10, or the upper limit of the value of m is not limited. Further, the widths of the m first electrode traces 1b may be equal or different, and when the widths of the m first electrode traces 1b are equal, except for the widest first electrode 1a1, the width of each first electrode 1a1 may be reduced by the same magnitude, for example, may be equal to the width of one first electrode trace 1b, compared to the previous first electrode 1a 1.
In some embodiments of the present invention, as shown in FIG. 2, the width sides of the m first electrodes 1a1 in the first unit 1 are aligned, and the m first electrode traces 1b are all located on the same side of the width of the first electrode column 1a, i.e., on the center line of the first electrode column 1a extending along the second direction F2, on the same side in the first direction F1, e.g., may be located on the other side of the width (i.e., non-aligned side) of the first electrodes 1a1 other than the widest first electrode 1a 1. for example, in the example shown in FIG. 2, the right edge of the electrode TXI-1, the right edge of the electrode TXI-2, the right edge of the electrode TXI-m, are aligned, are located on the same vertical line, the electrode TX trace L i-1 connected to the electrode TXI-1, the electrode TX trace L i-2 connected to the electrode TXI-2, and the electrode TX trace L i-m connected to the electrode TXI-2, and the left side of the TXI-L are conveniently manufactured by this electrode.
Of course, the present invention is not limited to this, and the m first electrodes 1a1 may also be arranged in other manners, for example, in some other embodiments of the present invention, the center sides of the m first electrodes 1a1 in the first unit 1 are aligned, the m first electrode traces 1b are respectively located on two sides of the width of at least one first electrode 1a1 (this embodiment is not shown in the figures), and so on, which are not described herein again.
In some embodiments of the present invention, as shown in fig. 2, the center positions of the j second electrodes 2a1 in the second electrode unit 2a0 are sequentially shifted in the first direction F1 along the second direction F2. Therefore, the second electrode traces 2b can be disposed by using the offset positions of the second electrodes 2a1, and it is ensured that the j second electrode traces 2b can be correspondingly connected with the mj second electrodes 2a 1.
For example, in the example shown in fig. 2, for the ith column of touch units 10, the second electrode column 2a includes m second electrode units 2a0 arranged in sequence along the second direction F2, and each second electrode unit 2a0 includes j second electrodes 2a1, which are respectively an electrode RXi-1, an electrode RXi-2, an electrode RXi-3 … … and an electrode RXi-j, wherein the center of the electrode RXi-1, the center of the electrode RXi-2, the center of the electrode RXi-3 and the center of the electrode RXi-j are sequentially shifted to the left, or a connecting line of the center of the electrode RXi-1, the center of the electrode RXi-2, the center of the electrode RXi-3 and the center of the electrode RXi-j is tilted from top to bottom and from right to left. It should be noted that, in the specific example shown in fig. 2, j ≧ 4, but the present invention is not limited thereto, and it is obvious for those skilled in the art to understand all embodiments of j ≧ 2 after reading the scheme of the present application.
In some embodiments of the present invention, as shown in fig. 2, the widths of the j second electrodes 2a1 in the second electrode unit 2a0 are the same, and the distances between the center positions of every two adjacent second electrodes 2a1 in the first direction F1 are the same, that is, the distances by which the centers of the j second electrodes 2a1 in the second electrode unit 2a0 are sequentially shifted in the first direction F1 along the second direction F2 are the same, for example, in the example shown in fig. 2, the width of the electrode RXi-1, the width of the electrode RXi-2, the width of the electrode RXi-3, and the width of the electrode RXi-j are the same, and the center of the electrode RXi-2 is shifted leftward with respect to the center of the electrode RXi-1 by a distance L, the center of the electrode RXi-3 is shifted leftward with respect to the center of the electrode RXi-2 by a distance L, the center of the electrode RXi-3 is shifted leftward with respect to the center of the electrode RXi-2 by a distance 733, and the second electrode unit sections 3884 can be manufactured by the same width of the second electrode unit sections 3884, which can be easily manufactured and the second electrode sections can be improved.
Further, it should be noted that: the ratio of the width of the portion of the second electrode trace 2b extending along the second direction F2 to the width of the second electrode 2a1 is not limited, and may be calculated according to the value of j, for example, in some specific examples, the width of the second electrode 2a1 may be about 4mm, the width of the portion of the second electrode trace 2b extending along the second direction F2 is not less than 30 μm, the value of j may be between 2 and 10, or the upper limit of the value of j is not limited. In addition, the width of the portion of the second electrode trace 2b extending in the first direction F1 is equal to or greater than the width of the portion of the second electrode trace 2b extending in the second direction F2, which is not limited herein.
In some embodiments of the present invention, as shown in fig. 2, each group of second electrode units 2a0 in the second electrode column 2a has the same structure, so that m groups of second electrode units 2a0 are sequentially and repeatedly arranged along the second direction F2, wherein the second electrode trace 2b is connected to the same second electrode 2a1 in the second direction F2 in each group of second electrode units 2a0, i.e. the same ordered second electrode 2a1 in each group of second electrode units 2a0 is used for transmitting the same signal and is connected to the same second electrode trace 2b, for example, in the example shown in fig. 2, the electrode trace RX L i-1 is connected to the first ordered electrode RXi-1 in each group of second electrode units 2a0, the electrode trace RX L i-2 is connected to the second ordered electrode RXi-2 in each group of second electrode units 2a0, the electrode trace RX L i-3 is connected to the second electrode units 2a0 in the second order RXi-2, the electrode trace RX units 2 a-2 a0 are connected to the second electrode units 0 in each group, and the RXi-2 is connected to the electrode unit 8536.
In some embodiments of the invention, as shown in fig. 2, the j second electrodes 2a1 in each group of the second electrode units 2a0 are sequentially arranged along the second direction F2 from the first sequential electrode c1 (e.g., the electrode RXi-1 shown in fig. 2) to the j-th sequential electrode cj (e.g., the electrode RXi-j shown in fig. 2), the j second electrode traces 2b in the second unit 2 are respectively arranged from the first trace d1 (e.g., the electrode trace RX L i-1 shown in fig. 2) to the j trace dj (e.g., the electrode trace RX L i-j shown in fig. 2), the first trace d1 is connected to the first sequential electrode c1, the j dj is connected to the j-th sequential electrode cj, wherein the first trace d1 (e.g., the electrode RX L i-1 shown in fig. 2) and the j trace dj (e — c) are connected to the electrodes L i-j) respectively located on both sides of the second row electrode F2, and the second electrode unit 2 is designed to increase the accuracy of the second electrode column spacing F1, and the second electrode rows c 2 is convenient for manufacturing.
For example, in the example shown in fig. 2, in the second unit 2, the second electrodes 2a1 other than the first sequential electrode c1 and the j-th sequential electrode cj are located between the first trace d1 (e.g., the electrode trace RX L i-1 shown in fig. 2) and the j-th trace dj (e.g., the electrode trace RX L i-j shown in fig. 2), and the first trace d1 (e.g., the electrode trace RX L i-1 shown in fig. 2) and the j-th trace dj (e.g., the electrode trace RX L i-j shown in fig. 2) extend along the second direction F2, the first trace d1 is aligned with the right side of the first sequential electrode c1, and the j-th trace dj is aligned with the left side of the j-th sequential electrode trace cj), so that the manufacturing is convenient, and the occupied space of the second electrode trace 2b can be reduced, and the touch accuracy can be improved.
In some embodiments of the present invention, as shown in fig. 2, when j > 2 and 1 < x < j, the xth trace dx in the second unit 2 is connected to the xth-order electrode cx in each group of the second electrode units 2a0, the xth trace dx passes through between every two adjacent second electrode units 2a0 to be respectively connected to the two adjacent xth-order electrodes cx, and the xth trace dx is input-connected from one side of the width of each xth-order electrode cx and output-connected from the other side of the width. Therefore, the manufacturing is convenient, the wiring design is convenient, the occupied space of the second electrode wiring 2b can be reduced as much as possible, and the touch control precision is improved.
For example, in the example shown in fig. 2, when x is 2 and m is 3, the x-th trace dx (e.g., electrode trace RX L i-2 shown in fig. 2) in the second unit 2 is first input-connected by the width left side of the x-order electrode cx (e.g., electrode RXi-2 shown in fig. 2) in the upper-count first-group second electrode unit 2a0 (e.g., R1 group shown in fig. 2) and output-connected by the width right side, and then the x-th trace dx (e.g., electrode trace RX L i-2 shown in fig. 2) is then passed from right to left between the upper-count first-group second electrode unit 2a0 (e.g., R1 group shown in fig. 2) and the upper-count second-group second electrode unit 2a0 (e.g., R2 group shown in fig. 2) to be connected by the width left-right side of the upper-count second-group second electrode unit 2a0 (e.g., R2 group shown in fig. 2) and output-connected by the width left-right-side of the upper-count second-group second-electrode unit 2 as shown in fig. 2 and output-input-output-connected by the width left side of the upper-group of the width right-input electrode cx 2 and output electrodes 2 (e as shown in the width right-output electrodes 2) in the upper-output unit 2 and input-output electrodes 2 in the width right-input-2 and input-output electrodes in the upper-output unit 2 (R7372) in the upper-2) in the upper-input-output unit 2).
In some embodiments of the invention, as shown in fig. 2, the structures of the touch units 10 in each row of the touch layer 100 are the same, that is, the structures of the first units 1 in the touch units 10 in each row are the same, and the structures of the second units 2 in the touch units 10 in each row are the same. Therefore, the touch layer 100 has a simple structure and is convenient to manufacture. Of course, the present invention is not limited thereto, and in other embodiments of the present invention, the structures of each row of touch units 10 in the touch layer 100 may also be different, for example, the structures of the first units 1 in some touch units 10 are different, or the structures of the second units 2 in some touch units 10 are different, and so on, which are not described herein again.
Fig. 3 is a partial enlarged view of the touch unit 10 shown in fig. 2, as shown in fig. 3, the touch layer 100 is a single-layer Metal grid 20 (i.e., Metal Mesh), so that the first electrode 1a1, the first electrode trace 1B, the second electrode 2a1, and the second electrode trace 2B are all formed by the Metal grid 20, that is, all touch electrodes and all touch electrode traces are designed by using the Metal grid 20, all signals are the same Metal layer, and the manufacturing and manufacturing are convenient, and when the touch layer 100 and the Display module B are stacked together, the Metal grid 20 can be located outside the light-emitting area of the pixel of the Display module B, for example, when the Display module B is an Organic electroluminescent Display (O L ED), the Metal grid 20 can be located outside the light-emitting area of the single O L ED light-emitting unit, so that the optical image problem caused by the poor light emission of the O L ED light can be significantly reduced.
As shown in fig. 3, the touch layer 100 is entirely a metal grid 20, and thus is composed of a plurality of grid cells 20a (for example, a hexagonal grid is a grid cell 20a in fig. 3), in the above embodiment, when the first electrode trace 1b extends along the second direction F2, the column width of the first electrode trace 1b may not exceed the column width of two columns of grid cells 20a, when the second electrode trace 2b extends along the second direction F2, the column width of the second electrode trace 2b may not exceed the column width of two columns of grid cells 20a, and when the second electrode trace 2b is a folding line, the column width of a portion thereof extending along the second direction F2 may not exceed the column width of two columns of grid cells 20a, and the row width of a portion thereof extending along the first direction F1 may not exceed the row width of three rows of grid cells 20 a. Therefore, the laying area of the touch electrode wiring can be reduced, the laying area of the touch electrode is increased, and the touch precision is improved. It should be noted that the column width described herein refers to the width in the first direction F1, and the row width described herein refers to the width in the second direction F2.
It should be noted that, as shown in fig. 3, the structure of each grid unit 20a is not required to be the same, for example, when the touch layer 100 and the display module B are stacked together, the structure may be determined according to the pixel arrangement of the display module B, for example, the design may be matched according to the shape of the pixel light emitting area of the display module B, and in addition, the specific shape of each grid unit 20a is not limited, and the design may also be matched according to the shape of the pixel light emitting area of the display module B, for example, the grid may be a hexagonal grid shown in fig. 3, or other polygonal grids.
Fig. 4 is a partially enlarged view of the metal mesh 20 shown in fig. 3, and as shown in fig. 4, some of the mesh units 20a have cut-outs 20b for preventing short-circuiting, so that any two first signal lines, any two second signal lines, and any one first signal line and any one second signal line can be prevented from being short-circuited by the cut-outs 20 b. Therefore, by providing the break opening 20b, the short circuit problem can be effectively avoided, and the manufacturing difficulty can be simplified, so that the touch layer 100 can be realized as a single-layer structure. In some embodiments of the present invention, except for the broken openings 20b, the touch layer 100 is a regular metal grid 20 structure as a whole, and all grid units 20a included in the regular metal grid are regularly and periodically arranged, so that the manufacturing is facilitated.
As shown in fig. 4, the grid unit 20a is a polygonal grid surrounded by a plurality of straight sides, the disconnection opening 20b is formed on the straight sides, and the gap of the straight sides at the disconnection opening 20b is 2.5um-5um, so that two signal lines can be separated without short circuit, and the disconnection distance can satisfy the exposure precision of the exposure machine, making the manufacturing possible. Therefore, the touch electrodes and the touch electrode wires at the boundary are enabled to be vertical and opposite, and gaps are small, so that the problem of poor optical images caused by the touch electrode wires can be obviously reduced.
Fig. 5 is a schematic partial stacked view of a partial structure of a touch display screen 1000 according to an embodiment of the invention, and as shown in fig. 5, the touch display screen 1000 may include a display module B and a touch module a, the display module B includes an encapsulation layer 200, the touch module a is the touch module a according to any embodiment of the invention, and the touch layer 100 is disposed on the encapsulation layer 200. Therefore, the touch module a has a small thickness, requires fewer processes, is easy to manufacture, and has a high product yield, so that the touch display screen 1000 has a small overall thickness, requires fewer processes, is easy to manufacture, and has a high product yield. Moreover, the touch layer 100 is directly manufactured on the encapsulation layer 200 of the display module B, and the encapsulation layer 200 of the display module B is used as a substrate of the touch layer 100, so that the thickness of the touch display screen 1000 can be further reduced.
The invention further provides a manufacturing method for manufacturing the touch display screen 1000, and specifically, the manufacturing method includes the steps of: an encapsulation layer 200 is fabricated, and a single-layer metal mesh 20 is fabricated on the encapsulation layer 200 to form the touch layer 100. Therefore, the touch display screen 1000 is very simple, convenient and quick to manufacture, and is made to be thin. For example, in some embodiments, the metal mesh 20 may be manufactured on the encapsulation layer 200 by an exposure process or a screen printing process to form the touch layer 100, so as to facilitate manufacturing, and the metal mesh 20 meeting the requirements is easily manufactured, and the method is very convenient to operate, low in cost, high in manufacturing efficiency, and high in yield.
The type of the Display module B is not limited, and may be, for example, O L ED, a liquid Crystal Display (L acquired Crystal Display, abbreviated as L CD), electronic paper, an electronic ink screen, or the like, and the Display module B may also be, for example, an Active-matrix organic light-emitting diode (AMO L ED) in O L ED, a passive-matrix organic light-emitting diode (passive-organic light-emitting diode, abbreviated as PMO L ED), or the like.
For example, in the example shown in fig. 5, when the display module B is an AMO L ED, the display module B may further include a cathode layer 300, the cathode layer 300 is located on a side of the encapsulation layer 200 away from the touch layer 100, or the encapsulation layer 200 is sandwiched between the cathode layer 300 and the touch layer 100, and thus, in manufacturing, after the processes of the cathode layer 300 of the AMO L ED and the encapsulation layer 200 (e.g., a thin film encapsulation layer TFE), the single-layer touch layer 100 including the touch transmitting electrodes, the touch receiving electrodes, the touch transmitting electrode traces and the touch receiving electrode traces may be directly manufactured on top of the encapsulation layer 200, which is very simple and fast to manufacture, and enables the touch display screen 1000 to have a relatively thin thickness.
The touch display screen 1000 according to the embodiment of the invention can be used for electronic equipment, and according to the electronic equipment provided by the embodiment of the invention, the thickness of the electronic equipment can be reduced and the production cost of the electronic equipment can be reduced by arranging the touch module A. It should be noted that the type of the electronic device is not limited, and for example, the electronic device may be a mobile phone, a tablet computer, a vehicle-mounted computer, a wearable device, and the like, and after the type of the electronic device is determined, a person skilled in the art can know other components of the electronic device, which is not described herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example 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.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. A touch module, comprising:
the touch layer is of a single-layer structure and comprises n rows of touch units which are sequentially arranged along a first direction, each row of touch units comprises a first unit and a second unit which are sequentially arranged along the first direction,
the first unit comprises a row of first electrode rows and m first electrode wires, the first electrode rows comprise m first electrodes which are sequentially arranged along a second direction, each first electrode wire is respectively connected with one first electrode to form m first signal wires, and the second direction is crossed with the first direction;
the second unit comprises a row of second electrode rows and j second electrode routing lines, the second electrode rows comprise m groups of second electrode units which are sequentially arranged along the second direction, the m groups of second electrode units and the m first electrodes are arranged oppositely one by one along the first direction, each group of second electrode units comprises j second electrodes which are sequentially arranged along the second direction, and each second electrode routing line is respectively connected with one second electrode in each group of second electrode units to form j second signal lines.
2. The touch module of claim 1, wherein the widths of the m first electrodes in the first electrode row decrease sequentially along the second direction.
3. The touch module of claim 2, wherein the m first electrodes in the first unit are aligned on one side of the width thereof, and the m first electrode traces are all located on the same side of the width of the first electrode row.
4. The touch module of claim 1, wherein the center positions of the j second electrodes in the second electrode unit are sequentially shifted along the second direction in the first direction.
5. The touch module of claim 4, wherein the widths of the j second electrodes in the second electrode unit are the same, and the distances between the center positions of every two adjacent second electrodes in the first direction are the same.
6. The touch module of claim 4, wherein each group of the second electrode units in the second electrode rows has the same structure, and the second electrode traces are connected to the second electrodes in the same order along the second direction in each group of the second electrode units.
7. The touch module of claim 6, wherein j second electrodes in each group of the second electrode units are sequentially arranged from a first sequential electrode to a j sequential electrode along the second direction, j second electrode traces in the second units are respectively arranged from a first trace to a j trace, the first trace is connected to the first sequential electrode in each group of the second electrode units, the j trace is connected to the j sequential electrode in each group of the second electrode units, and the first trace and the j trace are respectively located on two sides of the width of the second electrode column.
8. The touch module of claim 7, wherein when j is greater than 2 and x is greater than 1 and less than j, the xth trace in the second unit is connected to the xth-ordered electrodes in each group of the second electrode units, the xth trace passes through between every two adjacent second electrode units to be respectively connected to the adjacent xth-ordered electrodes, and the xth trace is input from one side of the width of each xth-ordered electrode and output from the other side of the width of each xth-ordered electrode.
9. The touch module of claim 1, wherein the touch units in each row of the touch layer have the same structure.
10. The touch module of any one of claims 1-9, wherein the touch layer is a single-layer metal grid, and the first electrode, the first electrode trace, the second electrode, and the second electrode trace are all formed by the metal grid.
11. The touch module of claim 10, wherein the metal grid is composed of a plurality of grid cells, and some of the grid cells have openings for preventing short circuit.
12. The touch module of claim 11, wherein the grid cells are polygonal grids, and the cut-off openings are formed on linear sides of the grid cells.
13. A touch display screen, comprising a display module and a touch module, wherein the display module comprises an encapsulation layer, the touch module is the touch module according to any one of claims 1 to 12, and the touch layer is disposed on the encapsulation layer.
14. A manufacturing method of a touch display screen, wherein the touch display screen is the touch display screen according to claim 13, the manufacturing method comprising the steps of: and manufacturing the packaging layer, and manufacturing a single-layer metal grid on the packaging layer to form the touch layer.
15. The method for manufacturing the touch display screen according to claim 14, wherein the metal mesh is manufactured on the encapsulation layer by using an exposure process or a screen printing process.
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| CN202010222751.3A CN111427475B (en) | 2020-03-26 | 2020-03-26 | Touch module, touch display screen and manufacturing method of touch display screen |
| PCT/CN2020/141297 WO2021190047A1 (en) | 2020-03-26 | 2020-12-30 | Touch-control module, touch-control display screen, and method for manufacturing touch-control display screen |
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| CN202010222751.3A CN111427475B (en) | 2020-03-26 | 2020-03-26 | Touch module, touch display screen and manufacturing method of touch display screen |
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| CN111427475B (en) | 2022-09-02 |
| WO2021190047A1 (en) | 2021-09-30 |
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