CN212302458U - Capacitive touch screen - Google Patents
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- CN212302458U CN212302458U CN202022023175.8U CN202022023175U CN212302458U CN 212302458 U CN212302458 U CN 212302458U CN 202022023175 U CN202022023175 U CN 202022023175U CN 212302458 U CN212302458 U CN 212302458U
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Abstract
The application discloses a capacitive touch screen, which comprises a panel, an upper layer of transparent optical adhesive, an upper layer of transparent conductive film, a lower layer of transparent optical adhesive and a lower layer of transparent conductive film, wherein the panel, the upper layer of transparent optical adhesive, the upper layer of transparent conductive film, the lower layer of transparent optical adhesive and the lower layer of transparent conductive film are sequentially overlapped together; at least part of upper electrode lead wires of the upper transparent conductive film are formed into an upper electrode lead wire group; at least part of the lower electrode lead wires of the lower transparent conductive film are formed into a lower electrode lead wire group; on the lower transparent conductive film, the projection of the upper lead line group is at least partially overlapped with the projection of the lower lead line group, and an insulating layer and an isolating layer are arranged between the upper lead line group and the lower lead line group; in the wire outlet frame, all the upper layer electrode lead-out wires and the lower layer electrode lead-out wires are connected to the FPC. In the application, the projection of the upper lead line group is at least partially overlapped with the projection of the lower lead line group, so that the width of the same frame where the upper lead line group and the lower lead line group are located is reduced.
Description
Technical Field
The utility model relates to a capacitive touch screen.
Background
The development trend of the touch screen structure is four-side narrow frames, in general design, the touch screen can only have three frames and can achieve a very narrow range, however, the fourth frame cannot achieve a very narrow range like other three frames, because the outgoing lines of two layers of electrodes of the touch screen must be led out from one frame, the frame for leading out the outgoing lines is called an outgoing line frame, each layer of electrodes is provided with one layer of outgoing lines, the outgoing lines in each layer of outgoing lines are arranged at intervals in the same plane, at present, the two layers of outgoing lines cannot be arranged in an overlapping mode in the thickness direction of the touch screen and can only be arranged in a staggered mode, and in the thickness direction of the touch screen, the distance between the two layers of outgoing lines needs to be more than 0.3 mm. In addition, in the extending direction of the plane of the touch screen, at least 0.3mm needs to be spaced between two layers of outgoing lines closest to each other, namely, when the two layers of outgoing lines are observed along the thickness direction of the touch screen, the two layers of outgoing lines cannot be overlapped with each other, and at least 0.3mm needs to be spaced between two layers of outgoing lines closest to each other, otherwise, node capacitance is easily formed, and therefore the outgoing line frame needs to have a large width so as to have a sufficient width capable of accommodating the two layers of outgoing lines. In addition, the outgoing line needs to be connected with a circuit of an FPC (flexible printed circuit) through hot pressing, the root of the circuit of the FPC is fixed on the cover plate through an adhesive tape, and therefore the width of the outgoing line frame is increased. However, the larger width of the outgoing line frame covers a part of the touch screen, which limits further improvement of the screen occupation ratio of the touch screen.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention first provides a capacitive touch screen, which includes a panel, an upper transparent optical adhesive, an upper transparent conductive film, a lower transparent optical adhesive, and a lower transparent conductive film, which are sequentially stacked together, wherein the upper transparent conductive film and the lower transparent conductive film are bonded together by the lower transparent optical adhesive, and the upper transparent conductive film is bonded to the panel by the upper transparent optical adhesive;
a plurality of upper layer transparent electrodes are arranged on the upper layer transparent conductive film, each upper layer transparent electrode is connected with an upper layer electrode outgoing line, and at least part of the upper layer electrode outgoing lines form an upper layer electrode outgoing line group;
a plurality of lower transparent electrodes are arranged on the lower transparent conductive film, each lower transparent electrode is connected with a lower electrode outgoing line, and at least part of the lower electrode outgoing lines form a lower electrode outgoing line group;
on the lower transparent conductive film, the projection of the upper lead line group is at least partially overlapped with the projection of the lower lead line group, an insulating layer and an isolating layer are arranged between the upper lead line group and the lower lead line group, and the isolating layer is a metal layer;
an outgoing line frame is formed on the touch screen, an FPC is arranged in the outgoing line frame, and all the upper-layer electrode outgoing lines and the lower-layer electrode outgoing lines are connected to the FPC.
The adjacent upper-layer electrode lead-out wires are arranged at intervals in the same plane; the adjacent lower electrode lead wires are arranged at intervals on the same plane.
In this application, on lower floor transparent conductive film, the projection of upper strata lead out the line group overlaps with the projection of lower floor lead out the line group at least partially, reduce the width that the line group and lower floor lead out the same frame of line group place are drawn out to the upper strata, when the projection of upper strata lead out the line group overlaps completely with the projection of lower floor lead out the line group, can cancel the less frame width who occupies the leading out the line group of width, thereby cancel the 0.3mm distance that must the interval between the two, according to the different quantity of lower floor electrode lead-out wire and upper electrode lead-out wire in different products, can practice thrift 1mm-4 mm's frame width.
After the projection of the upper lead line group and the projection of the lower lead line group are at least partially overlapped, the distance between the upper lead line group and the lower lead line group is too short, node capacitance is easily generated, and the touch screen forms a touch function area in a frame non-touch function area to form false triggering.
In order to solve the problem, an insulating layer and an isolating layer are arranged between the upper layer lead-out wire group and the lower layer lead-out wire group, wherein the insulating layer is used for avoiding short circuit between the corresponding electrode lead-out wire and the isolating layer, and the isolating layer is used for absorbing extra charges generated by the upper layer electrode lead-out wire and the lower layer electrode lead-out wire and avoiding generating node capacitance.
Further, in the outgoing line frame, on the lower layer transparent conductive film, the upper layer electrode outgoing line group has a first projection width, the lower layer electrode outgoing line group has a second projection width, and one of the first projection width and the second projection width completely covers the other. That is, the first projection width of the upper lead line group completely covers the second projection width of the lower lead line group, or the second projection width of the lower lead line group completely covers the first projection width of the upper lead line group.
The first projection width is a width of a projection of the upper electrode lead line group, and the width is perpendicular to an extending direction of the upper electrode lead line. The second projection width is a width of a projection of the lower electrode lead line group, and the width is perpendicular to the extending direction of the lower electrode lead line.
The total width that upper electrode lead-out wire and lower floor's electrode lead-out wire occupy can furthest be reduced to this setting to reduce the occupation scope of frame to the touch-sensitive screen, can reduce the area of the touch-sensitive screen that upper electrode lead-out wire and lower floor's electrode lead-out wire occupy, improve the screen of touch-sensitive screen and account for the ratio, in order to reduce the frame area, realize narrower frame.
Furthermore, an upper layer ground wire is respectively arranged on two sides of the upper layer lead-out wire group, a lower layer ground wire is respectively arranged on two sides of the lower layer lead-out wire group, and the isolation layer is connected with at least one of the upper layer ground wire and the lower layer ground wire.
After the isolation layer is connected to the upper ground wire or the lower ground wire, charges in the isolation layer can be led out of the touch screen, node capacitance formed by overlapping of the upper electrode outgoing line and the lower electrode outgoing line is avoided, the node capacitance can enable a corresponding area to have a touch function and lead to false triggering, and after the isolation layer is connected to the lower ground wire or the upper ground wire, the node capacitance can be effectively eliminated so as to avoid false triggering.
Specifically, the insulating layer is printed on the lower lead line group and the lower ground line, the isolation layer is printed on the insulating layer, and a connection hole through which the isolation layer is connected to the lower ground line is provided in a region of the insulating layer corresponding to the lower ground line. Further, when the spacer is printed, the metal printing liquid flows into the connection hole and is connected to the lower ground line.
Adopt the printing mode can conveniently accomplish the setting of insulating layer and isolation layer, set up the connecting hole on the insulating layer after, when the printing isolation layer, metal printing liquid just can be through this connecting hole lug connection to the underground of lower floor, the arrangement of isolation layer and with the disposable completion of being connected of lower floor's ground wire, reduce operating procedure, improve work efficiency.
Furthermore, at least two connecting holes are formed in the insulating layer corresponding to each lower-layer ground wire. After at least two connecting holes are formed, the connection between the isolation layer and the lower-layer ground wire can be effectively guaranteed.
Secondly, the application also provides a manufacturing method of the capacitive touch screen, so as to prepare the capacitive touch screen, and the manufacturing method comprises the following steps:
(1) processing a lower layer transparent electrode on the lower layer transparent conductive film, arranging a lower layer electrode outgoing line at one end of the lower layer transparent electrode, forming at least part of the lower layer electrode outgoing line into a lower layer electrode outgoing line group, and arranging a lower layer ground wire at two sides of the lower layer electrode outgoing line group respectively;
(2) printing an insulating layer on the lower lead-out wire group and the lower ground wire, then forming a connecting hole on the insulating layer, exposing the lower ground wire after the connecting hole penetrates through the insulating layer, then printing a metal layer on the printed insulating layer to be used as an isolating layer, and when the metal layer is printed, allowing metal printing liquid to flow into the connecting hole and be bonded to the lower ground wire; coating or attaching a lower layer transparent optical adhesive on the lower layer transparent conductive film;
(3) processing an upper layer transparent electrode on the upper layer transparent conductive film, arranging an upper layer electrode outgoing line at one end of the upper layer transparent electrode, forming at least part of the upper layer electrode outgoing line into an upper layer electrode outgoing line group, and arranging an upper layer ground wire at two sides of the upper layer electrode outgoing line group respectively; coating or attaching an upper layer of transparent optical adhesive on the upper layer of transparent conductive film;
(4) the upper layer transparent conductive film is attached to the lower layer transparent optical adhesive on the lower layer transparent conductive film, an upper layer electrode outgoing line, an upper layer ground wire, a lower layer electrode outgoing line and the lower layer ground wire are all connected to the FPC, the panel is covered on the upper layer transparent optical adhesive, and the panel is bonded on the upper layer transparent conductive film through the upper layer transparent optical adhesive;
on the lower transparent conductive film, at least the projection of the upper lead line group is overlapped with the projection of the lower lead line group.
In the manufacturing method, corresponding transparent electrodes, electrode outgoing lines and ground wires are manufactured on the lower transparent conductive film and the upper transparent conductive film respectively, and corresponding transparent optical cement is arranged. Compared with the upper layer lead-out wire group, the printing operation on the lower layer lead-out wire group is more convenient and fast, the continuous operation of the insulating layer and the isolating layer can be carried out on a production line, the turnover operation of the lower layer transparent conductive film is not needed, in the prior art, the printing technology is mature, and the printing technology can be directly applied to the application. If printing insulating layer and isolation layer on upper electrode lead-out wire, then need carry out the operation of overturning many times to upper transparent conductive film and just accomplish, at first need overturn upper transparent conductive film earlier before printing insulating layer and isolation layer, accomplish the printing back, overturn upper transparent conductive film again and come and carry out the setting of upper transparent optical cement, this needs to set up special mechanism and carries out the upset work of upper transparent conductive film, not only increased the acquisition cost of equipment, and at the upset in-process, still can cause the damage to upper transparent conductive film.
Further, an outgoing line frame is formed on the touch screen, an FPC is arranged in the outgoing line frame, and all the upper-layer electrode outgoing lines and the lower-layer electrode outgoing lines are connected to the FPC;
in the outgoing line frame, on the lower layer transparent conductive film, the upper layer electrode outgoing line group has a first projection width, the lower layer electrode outgoing line group has a second projection width, and one of the first projection width and the second projection width completely covers the other. That is, the first projection width of the upper lead line group completely covers the second projection width of the lower lead line group, or the second projection width of the lower lead line group completely covers the first projection width of the upper lead line group.
The first projection width is a width of a projection of the upper electrode lead line group, and the width is perpendicular to an extending direction of the upper electrode lead line. The second projection width is a width of a projection of the lower electrode lead line group, and the width is perpendicular to the extending direction of the lower electrode lead line.
The total width that upper electrode lead-out wire and lower floor's electrode lead-out wire occupy can furthest be reduced to this setting to reduce the occupation scope of frame to the touch-sensitive screen, can reduce the area of the touch-sensitive screen that upper electrode lead-out wire and lower floor's electrode lead-out wire occupy, improve the screen of touch-sensitive screen and account for the ratio, in order to reduce the frame area, realize narrower frame.
Drawings
Fig. 1 is a schematic view of a mobile phone screen mounted with the present application.
Fig. 2 is an exploded view of a capacitive touch screen.
FIG. 3 is a schematic view of upper electrode lead-out lines on the upper transparent conductive film.
FIG. 4 is a schematic view of a lower electrode lead-out line on the lower transparent conductive film.
Fig. 5 is a schematic view in the direction B-B in fig. 1.
Fig. 6 is a schematic layout of an electrode lead-out wire and a ground wire in the prior art.
Detailed Description
First, the arrangement of the electrodes and the ground line of the capacitive touch screen in the related art will be described below.
Referring to fig. 6, in the prior art, within the range of the outgoing frame, there are two sets of electrode outgoing lines, which are an upper electrode outgoing line set a200 connected to an upper electrode and a lower electrode outgoing line set a300 connected to a lower electrode, where two sides of the upper electrode outgoing line set a200 are respectively provided with an upper ground line a208, and two sides of the lower electrode outgoing line set a300 are respectively provided with a lower ground line a 308.
In the range of the outgoing line frame, the upper electrode outgoing line group a200 and the lower electrode outgoing line group a300 are arranged in two layers in the thickness direction of the touch screen a. In the extending direction of the plane of the touch screen A, the distance S between the nearest upper-layer electrode outgoing line and the nearest lower-layer electrode outgoing line is at least 0.3 mm.
In fig. 6, reference V denotes a thickness direction of the touch panel a, reference W denotes a width direction of the frame, reference 201 denotes an upper electrode lead line closest to a lower electrode lead line in the lower electrode lead line group a300, and reference 301 denotes a lower electrode lead line closest to an upper electrode lead line in the upper electrode lead line group a 200. If the two layers of electrode outgoing lines are arranged in an overlapping manner in the thickness direction of the touch screen A, a node capacitance is formed between the two layers of electrode outgoing lines, so that a false touch area is caused, and the normal work of the touch screen A is influenced.
Referring to fig. 1 to 5, in fig. 1, an arrow X indicates a width direction of the touch screen, an arrow Y indicates a length direction of the touch screen, and an arrow Z indicates a thickness direction of the touch screen.
The capacitive touch screen 150 includes a panel 151, an upper transparent optical adhesive 152, an upper transparent conductive film 153, a lower transparent optical adhesive 154, and a lower transparent conductive film 155, which are sequentially stacked together, wherein the upper transparent conductive film 153 and the lower transparent conductive film 155 are bonded together by the lower transparent optical adhesive 154, and the upper transparent conductive film 153 is bonded to the panel 151 by the upper transparent optical adhesive 152.
In this embodiment, 4 frames, namely, a left frame 101, a right frame 103, a top frame 102, and a bottom frame 104, are disposed on the touch screen 150, and the four frames are connected end to end according to the order of the left frame 101, the top frame 102, the right frame 103, and the bottom frame 104 to form a rectangular frame 110. The bottom frame 104 serves as a wire outlet frame, and an FPC120 is disposed at the bottom frame.
Referring to fig. 3 and 4, a plurality of upper transparent electrodes 1538 are disposed on the upper transparent conductive film, a plurality of lower transparent electrodes 1558 are disposed on the lower transparent conductive film, an upper transparent electrode 1538 is exemplarily shown in fig. 3, and a lower transparent electrode 1558 is exemplarily shown in fig. 4.
Each upper layer transparent electrode is connected with an upper layer electrode lead-out wire 11, two upper layer ground wires 12 are led out from the upper layer transparent conductive film 153, and all the upper layer electrode lead-out wires 11 are positioned between the two upper layer ground wires 12. Each lower transparent electrode is connected with a lower electrode lead wire 21, and two lower ground wires 22 are led out from the lower transparent conductive film 155, and all the lower electrode lead wires 21 are located between the two lower ground wires 22.
In this embodiment, the upper transparent electrodes extend along the width direction of the touch screen, and the upper electrode lead lines are divided into two groups, which are respectively called as a left upper electrode lead line group 1531 and a right upper electrode lead line group 1532, where the left upper electrode lead line group is led out from one side of the left frame, and extends along the left frame and the bottom frame in sequence towards the FPC and is connected to the FPC. The right upper electrode lead-out line group is led out from one side of the right frame, extends towards the FPC direction along the right frame and the bottom frame in sequence and is connected to the FPC.
The lower-layer transparent electrodes extend along the length direction of the touch screen, the lower-layer electrode outgoing lines are led out from one side of the bottom frame, the lower-layer electrode outgoing lines are divided into two groups which are respectively called as a left lower-layer electrode outgoing line group 1551 and a right lower-layer electrode outgoing line group 1552, the left lower-layer electrode outgoing line group extends towards the FPC direction from the right left to the right along the bottom frame and is connected to the FPC, and the right lower-layer electrode outgoing line group extends towards the FPC direction from the right left along the bottom frame and is connected to the FPC.
Referring to fig. 5, in the bottom frame region, the left upper electrode lead line group and the left lower electrode lead line group are overlapped in the thickness direction of the touch screen, the left upper electrode lead line group has a first projection width P1 on the lower transparent conductive film, the left lower electrode lead line group has a second projection width P2 on the lower transparent conductive film, and the first projection width P1 completely covers the second projection width P2. First projection width A has on the transparent conducting film of upper electrode lead-out wire group lower floor on the right side, right side lower floor electrode lead-out wire group has second projection width B on transparent conducting film of lower floor, first projection width A covers second projection width B completely, in this implementation, first projection width P1 is equal with first projection width A, second projection width P2 is equal with second projection width B, then in this embodiment, can cancel lower floor electrode lead-out wire in the shared width of bed frame completely, the bed frame only need satisfy the needs of upper electrode lead-out wire can, in this embodiment, can reduce the width 4mm of bed frame. The width that the frame can reduce of being qualified for next round of competitions is different according to the screen size of different touch-sensitive screens.
It is understood that, in another embodiment, the second projection width P2 may completely cover the first projection width P1, and the second projection width B completely covers the first projection width a, in which case the width occupied by the upper-layer electrode lead-out wire on the bottom frame may be omitted. Alternatively, the first projection width P1 may completely cover the second projection width P2, and the second projection width B completely covers the first projection width a, but the first projection width P1 is the widest, so that the width occupied by the lower electrode lead line on the bottom frame may be omitted.
Of course, in other embodiments, the first projected width P1 and the second projected width P2 may only partially overlap, or the first projected width a and the second projected width B may only partially overlap, and the overlapping widths may be omitted.
That is, on the lower transparent conductive film, the projection of the upper lead line group and the projection of the lower lead line group are at least partially overlapped, and an insulating layer and an isolating layer, which is a metal layer, are arranged between the upper lead line group and the lower lead line group. And in the outgoing line frame, on the lower layer transparent conductive film, the upper layer electrode outgoing line group has a first projection width, the lower layer electrode outgoing line group has a second projection width, and one of the first projection width and the second projection width completely covers the other.
An insulating layer 90 and an isolating layer 80 are arranged between the upper layer lead-out wire group and the lower layer lead-out wire group, the isolating layer is a metal layer, the upper layer lead-out wire group comprises a left upper layer electrode lead-out wire group and a right upper layer electrode lead-out wire group, and the lower layer lead-out wire group comprises a left lower layer electrode lead-out wire group and a right lower layer electrode lead-out wire group.
The isolation layer is connected to the lower ground line. In this embodiment, the insulating layer is printed on the lower lead line group, and the isolation layer is printed on the insulating layer. Connection holes are provided in the insulating layer in regions corresponding to the lower ground lines, and in particular, in the present embodiment, two connection holes are provided in the insulating layer corresponding to each lower ground line, and in the drawings, the connection holes are not shown.
The isolation layer is connected to the lower ground line through the connection hole. When the isolating layer is printed, the metal printing liquid flows into the connecting hole and is connected to the lower layer ground wire, so that the metal connecting part of the isolating layer and the connecting hole is formed in one step, namely, the printing of the isolating layer and the connection of the isolating layer and the ground wire through the connecting hole are completed in one step by adopting a printing mode.
The following describes a method for manufacturing the capacitive touch screen, which specifically includes the following steps:
(1) processing a lower layer transparent electrode on the lower layer transparent conductive film, arranging a lower layer electrode outgoing line at one end of the lower layer transparent electrode, forming at least part of the lower layer electrode outgoing line into a lower layer electrode outgoing line group, and arranging a lower layer ground wire at two sides of the lower layer electrode outgoing line group respectively;
(2) printing an insulating layer on the lower lead-out wire group and the lower ground wire, then forming a connecting hole on the insulating layer, exposing the lower ground wire after the connecting hole penetrates through the insulating layer, then printing a metal layer on the printed insulating layer to be used as an isolating layer, and when the metal layer is printed, allowing metal printing liquid to flow into the connecting hole and be bonded to the lower ground wire; coating a lower layer transparent optical adhesive on the lower layer transparent conductive film;
(3) processing an upper layer transparent electrode on the upper layer transparent conductive film, arranging an upper layer electrode outgoing line at one end of the upper layer transparent electrode, forming at least part of the upper layer electrode outgoing line into an upper layer electrode outgoing line group, and arranging an upper layer ground wire at two sides of the upper layer electrode outgoing line group respectively; coating an upper layer of transparent optical adhesive on the upper layer of transparent conductive film;
(4) the upper layer transparent conductive film is attached to the lower layer transparent optical adhesive on the lower layer transparent conductive film, an upper layer electrode outgoing line, an upper layer ground wire, a lower layer electrode outgoing line and the lower layer ground wire are all connected to the FPC, the panel is covered on the upper layer transparent optical adhesive, and the panel is bonded on the upper layer transparent conductive film through the upper layer transparent optical adhesive;
on the lower transparent conductive film, at least the projection of the upper lead line group is overlapped with the projection of the lower lead line group.
It is understood that, in another embodiment, the upper transparent optical adhesive may also be adhered to the upper transparent conductive film in a fitting manner, and the lower transparent optical adhesive may also be adhered to the lower transparent conductive film in a fitting manner.
The left upper electrode lead line group has a first projection width P1 on the lower transparent conductive film, the left lower electrode lead line group has a second projection width P2 on the lower transparent conductive film, and the first projection width P1 completely covers the second projection width P2.
The right upper electrode lead wire group is provided with a first projection width A on the lower transparent conductive film, the right lower electrode lead wire group is provided with a second projection width B on the lower transparent conductive film, and the first projection width A completely covers the second projection width B.
Claims (6)
1. A capacitive touch screen is characterized by comprising a panel, an upper layer of transparent optical cement, an upper layer of transparent conductive film, a lower layer of transparent optical cement and a lower layer of transparent conductive film which are sequentially overlapped together, wherein the upper layer of transparent conductive film and the lower layer of transparent conductive film are bonded together through the lower layer of transparent optical cement, and the upper layer of transparent conductive film is bonded with the panel through the upper layer of transparent optical cement;
a plurality of upper layer transparent electrodes are arranged on the upper layer transparent conductive film, each upper layer transparent electrode is connected with an upper layer electrode outgoing line, and at least part of the upper layer electrode outgoing lines form an upper layer electrode outgoing line group;
a plurality of lower transparent electrodes are arranged on the lower transparent conductive film, each lower transparent electrode is connected with a lower electrode outgoing line, and at least part of the lower electrode outgoing lines form a lower electrode outgoing line group;
on the lower transparent conductive film, the projection of the upper lead line group is at least partially overlapped with the projection of the lower lead line group, an insulating layer and an isolating layer are arranged between the upper lead line group and the lower lead line group, and the isolating layer is a metal layer;
an outgoing line frame is formed on the touch screen, an FPC is arranged in the outgoing line frame, and all the upper-layer electrode outgoing lines and the lower-layer electrode outgoing lines are connected to the FPC.
2. A capacitive touch screen according to claim 1,
in the outgoing line frame, on the lower layer transparent conductive film, the upper layer electrode outgoing line group has a first projection width, the lower layer electrode outgoing line group has a second projection width, and one of the first projection width and the second projection width completely covers the other.
3. A capacitive touch panel according to claim 1, wherein an upper ground line is provided on each side of the upper lead line group, a lower ground line is provided on each side of the lower lead line group, and the isolation layer is connected to at least one of the upper ground line and the lower ground line.
4. A capacitive touch screen according to claim 3, wherein the insulating layer is printed on the lower lead out line group and the lower ground line, the isolation layer is printed on the insulating layer, and a connection hole is provided in a region of the insulating layer corresponding to the lower ground line, through which the isolation layer is connected to the lower ground line.
5. A capacitive touch screen according to claim 4, wherein the spacer layer is printed such that the metal printing fluid flows into the contact hole and connects to the underlying ground.
6. A capacitive touch screen according to claim 4, wherein at least two connection holes are provided in the insulating layer for each underlying ground line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022023175.8U CN212302458U (en) | 2020-09-15 | 2020-09-15 | Capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022023175.8U CN212302458U (en) | 2020-09-15 | 2020-09-15 | Capacitive touch screen |
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| Publication Number | Publication Date |
|---|---|
| CN212302458U true CN212302458U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022023175.8U Active CN212302458U (en) | 2020-09-15 | 2020-09-15 | Capacitive touch screen |
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| Country | Link |
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| CN (1) | CN212302458U (en) |
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