CN105786264B - Touch screen, manufacturing method thereof and touch device - Google Patents
Touch screen, manufacturing method thereof and touch device Download PDFInfo
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- CN105786264B CN105786264B CN201610342077.6A CN201610342077A CN105786264B CN 105786264 B CN105786264 B CN 105786264B CN 201610342077 A CN201610342077 A CN 201610342077A CN 105786264 B CN105786264 B CN 105786264B
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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
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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
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
The invention discloses a touch screen, a manufacturing method thereof and a touch device, which are used for reducing the times of yellow light manufacturing procedures of the touch screen and reducing the manufacturing cost of the touch screen. The touch screen comprises a display area and a frame area, wherein the frame area of the touch screen comprises: a touch electrode connecting part located on the substrate; an anisotropic conductive adhesive layer located above the touch electrode connecting portion; and the flexible circuit board is positioned above the anisotropic conductive adhesive layer, wherein the anisotropic conductive adhesive layer is used for electrically connecting the touch electrode connecting part and the flexible circuit board.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to a touch screen, a manufacturing method of the touch screen and a touch device.
Background
An OGS touch screen (One Glass Solution) is an electronic product protection screen manufactured by a technology of directly forming an Indium Tin Oxide (ITO) conductive film and a sensor on a protection Glass. One piece of glass serves both as protective glass and as a touch sensor. Compared with other capacitive touch screens, the OGS touch screen has the advantages of simple structure, light weight, thinness, good light transmittance, multi-point touch and the like, and is widely applied to the field of human-computer interaction.
Specifically, the structure of the touch screen in the prior art, as shown in fig. 1, includes a display area a and a frame area a1, wherein the structure of the touch screen includes a black matrix 12 on a substrate 11, wherein the black matrix is located in the frame area, a transparent conductive layer 13 on the black matrix 12, the transparent conductive layer 13 covers the display area and the frame area, and the transparent conductive layer 13 is used as a touch electrode, and includes a plurality of interconnected touch driving electrodes arranged along a first direction, a plurality of mutually insulated touch sensing electrodes (not shown in the figure) arranged along a second direction, a first insulating layer 14 above the transparent conductive layer 13 in the display area, a metal layer 15 above the first insulating layer 14 and above the transparent conductive layer in the frame area, the metal layer 15 in the display area is used to connect the plurality of mutually insulated touch sensing electrodes (not shown in the figure) extending along the second direction, the metal layer 15 in the frame region is used to electrically connect the transparent conductive layer 13 and the flexible circuit board 17, and a second insulating layer 16 is further included above the metal layer in the frame region, wherein the second insulating layer 16 includes a via 18, and the via 18 is used to connect the metal layer 15 and the flexible circuit board 17. The formation of each layer of the touch screen shown in fig. 1 requires one yellow light process, and thus the touch screen shown in fig. 1 needs 5 yellow light processes. And the metal layer in the touch screen has the defects of high reflectivity and easy visibility.
Therefore, the touch screen shown in fig. 1 is improved to obtain the touch screen shown in fig. 2. Referring to fig. 2, the touch screen includes a display area a and a frame area a1, the touch screen has a structure including a black matrix 12 on a substrate 11, wherein the black matrix is located in the frame area, a first transparent conductive layer 23 on the black matrix 12, the first transparent conductive layer 23 covers the display area and the frame area, and the first transparent conductive layer 23 is used as a touch electrode, and includes a plurality of interconnected touch driving electrodes (not shown) arranged along a first direction, a plurality of mutually insulated touch sensing electrodes (not shown) arranged along a second direction, a first insulating layer 14 above the first transparent conductive layer 23 in the display area, a second transparent conductive layer 24 above the first insulating layer 14, the second transparent conductive layer 24 is used for connecting the plurality of mutually insulated touch sensing electrodes extending along the second direction, and a metal layer 15 above the first transparent conductive layer in the frame area, the metal layer 15 in the frame region is used to electrically connect the first transparent conductive layer 23 and the flexible circuit board 17, and the second insulating layer 16 is further included above the metal layer in the frame region, wherein the second insulating layer 16 includes a via 18, and the via 18 is used to connect the metal layer 15 and the flexible circuit board 17. The formation of each layer of the touch screen shown in fig. 2 requires one yellow light process, and thus the touch screen shown in fig. 2 needs 6 yellow light processes. However, the metal layer in the touch screen has the disadvantages of high reflectivity and easy visibility.
In summary, in the frame area of the touch screen in the prior art, the metal layer is used to electrically connect the touch electrode and the flexible circuit board, and at least two yellow light processes are required to achieve the electrical connection, so that the manufacturing cost of the touch screen is increased.
Disclosure of Invention
The invention provides a touch screen, a manufacturing method thereof and a touch device, which are used for reducing the times of yellow light manufacturing procedures of the touch screen and reducing the manufacturing cost of the touch screen.
The embodiment of the invention provides a touch screen, which comprises a display area and a frame area, wherein the frame area of the touch screen comprises:
a touch electrode connecting part located on the substrate;
an anisotropic conductive adhesive layer located above the touch electrode connecting portion;
and the flexible circuit board is positioned above the anisotropic conductive adhesive layer, wherein the anisotropic conductive adhesive layer is used for electrically connecting the touch electrode connecting part and the flexible circuit board.
In a possible implementation manner, in the touch screen provided in an embodiment of the present invention, the frame area of the touch screen further includes a black matrix located between the substrate and the touch electrode connecting portion;
the projection of the anisotropic conductive adhesive layer on the substrate base plate is positioned in the projection area of the black matrix on the substrate base plate.
In a possible implementation manner, in the touch screen provided by the embodiment of the present invention, a width of the black matrix is greater than or equal to a width of the anisotropic conductive adhesive layer.
In a possible implementation manner, in the touch screen provided by the embodiment of the present invention, a projection of the flexible circuit board on the substrate is located in an area of a projection of the black matrix on the substrate.
In a possible implementation manner, in the touch screen provided in the embodiment of the present invention, the display area of the touch screen further includes a touch electrode electrically connected to the touch electrode connecting portion;
the touch control electrodes comprise touch control driving electrodes extending along a first direction and touch control induction electrodes extending along a second direction, and the touch control driving electrodes and the touch control induction electrodes are insulated from each other.
In a possible implementation manner, in the touch screen provided in the embodiment of the present invention, the flexible circuit board includes a first flexible circuit board and a second flexible circuit board;
the touch driving electrode is electrically connected with the first flexible circuit board through the anisotropic conductive adhesive layer; the touch sensing electrode is electrically connected with the second flexible circuit board through the anisotropic conductive adhesive layer.
In a possible implementation manner, in the touch screen provided by the embodiment of the present invention, a width of the anisotropic conductive adhesive layer is 0.6mm to 1.5 mm.
Correspondingly, the embodiment of the invention also provides a touch device which comprises the touch screen provided by the embodiment of the invention.
Correspondingly, the embodiment of the invention also provides a manufacturing method of the touch screen, which comprises the following steps:
forming a pattern of the touch electrode connecting part on the substrate base plate;
forming the anisotropic conductive adhesive layer above the touch electrode connecting part;
and curing the anisotropic conductive adhesive layer to ensure that the anisotropic conductive adhesive layer has conductivity and is electrically connected with the touch electrode connecting part and the flexible circuit board.
In a possible implementation manner, in the method for manufacturing the touch screen provided by the embodiment of the present invention, the curing the anisotropic conductive adhesive layer includes:
and curing the anisotropic conductive adhesive layer by adopting a hot pressing process.
The invention has the following beneficial effects:
the embodiment of the invention provides a touch screen, a manufacturing method thereof and a touch device, wherein the touch screen comprises a display area and a frame area, and the frame area of the touch screen comprises a touch electrode connecting part positioned on a substrate; an anisotropic conductive adhesive layer located above the touch electrode connecting portion; and the flexible circuit board is positioned above the anisotropic conductive adhesive layer, wherein the anisotropic conductive adhesive layer is used for electrically connecting the touch electrode connecting part and the flexible circuit board. Therefore, compared with the prior art, the touch electrode connecting part and the flexible circuit board are electrically connected through the metal layer and the insulating layer positioned above the metal layer, and the touch electrode connecting part and the flexible circuit board are connected through the anisotropic conductive adhesive layer, so that two yellow light processing processes are saved, and the cost of the touch screen is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a touch screen provided in the prior art;
fig. 2 is a schematic structural diagram of a second touch screen provided in the prior art;
fig. 3 is a schematic structural diagram of a touch screen according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a second touch screen according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a third touch screen according to an embodiment of the present invention;
FIG. 6 is a front view of a touch screen provided by an embodiment of the present invention;
fig. 7 is a schematic flowchart of a method for manufacturing a touch screen according to an embodiment of the present invention;
fig. 8(a) -8 (f) are schematic structural diagrams obtained after each step is executed in a method for manufacturing a touch screen according to an embodiment of the present invention;
fig. 9 is a front view of a second touch screen provided in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. 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 touch screen, the manufacturing method thereof and the touch device provided by the embodiment of the invention are used for reducing the times of yellow light manufacturing procedures of the touch screen and reducing the manufacturing cost of the touch screen.
The following describes in detail a touch panel, a method for manufacturing the same, and a touch device according to embodiments of the present invention with reference to the accompanying drawings.
The touch screen provided by the embodiment of the invention comprises a display area and a frame area. As shown in fig. 3, the bezel area a1 of the touch screen includes: a touch electrode connection portion 41 on the base substrate 11; an anisotropic conductive adhesive layer 42 located above the touch electrode connecting portion 41; and the flexible circuit board 17 is located on the anisotropic conductive adhesive layer 42, and the anisotropic conductive adhesive layer 42 is used for electrically connecting the touch electrode connecting portion 41 and the flexible circuit board 17.
It should be noted that the touch electrode connecting portion in the embodiment of the present invention is connected to a touch electrode in a display area of a touch screen, and specifically, the structure of the touch electrode in the display area is not limited specifically herein. Preferably, the touch electrode connecting portion is a transparent conductive layer, such as indium tin oxide.
Compared with the prior art in which a metal layer is manufactured between the touch control connecting part and the flexible circuit board and an insulating layer is manufactured to avoid corrosion of the metal layer, the method and the device adopt the anisotropic conductive adhesive layer to connect the touch control electrode connecting part and the flexible circuit board, so that the manufacturing process of the touch screen is simplified, and the manufacturing cost of the touch screen is reduced. The flexible circuit board is used for providing signals for the touch electrodes and receiving signals fed back by the touch electrodes.
Specifically, the Anisotropic Conductive Film (ACF) provided in the embodiment of the present invention is composed of a Conductive adhesive, the Conductive adhesive is an adhesive having a certain Conductive property after being cured or dried, and before being cured or dried, Conductive particles are separated from the adhesive and do not continuously contact with each other, so that the Conductive adhesive is in an insulating state. After the conductive paste is cured or dried, the volume of the adhesive shrinks due to the volatilization of the solvent and the curing of the adhesive, so that the conductive particles are in a stable continuous state with each other, thereby exhibiting conductivity. In the embodiment of the invention, the anisotropic conductive adhesive layer is formed by adopting the anisotropic conductive adhesive, so that the anisotropic conductive adhesive is cured under the action of high temperature and has conductivity, and the conduction is only carried out in the direction of the flexible circuit board and the touch electrode connecting part, thereby realizing the function of electrically connecting the touch electrode connecting part and the flexible circuit board. Specifically, the width of the anisotropic conductive paste is small, so that the width of the black matrix can be further reduced, and the purpose of narrow frame design is achieved.
The touch screen provided by the embodiment of the invention comprises a display area and a frame area, wherein the frame area of the touch screen comprises a touch electrode connecting part positioned on a substrate; an anisotropic conductive adhesive layer located above the touch electrode connecting portion; and the flexible circuit board is positioned above the anisotropic conductive adhesive layer, wherein the anisotropic conductive adhesive layer is used for electrically connecting the touch electrode connecting part and the flexible circuit board. Therefore, compared with the prior art, the touch electrode connecting part and the flexible circuit board are electrically connected through the metal layer and the insulating layer positioned above the metal layer in the frame area of the touch screen, and the touch electrode connecting part and the flexible circuit board are connected through the anisotropic conductive adhesive layer, so that two yellow light processing processes of manufacturing the metal layer and the insulating layer positioned above the metal layer in the touch screen are saved, and the cost of the touch screen is reduced.
Preferably, in the touch screen provided in the embodiment of the present invention, in order to avoid the anisotropic conductive adhesive layer from increasing the width of the frame region, referring to fig. 4, the frame region of the touch screen further includes a black matrix 43 located between the substrate 11 and the touch electrode connecting portion 41; the projection of the anisotropic conductive adhesive layer 42 on the base substrate 11 is located in the region of the projection of the black matrix 43 on the base substrate 11. Specifically, the width of the anisotropic conductive adhesive layer in the frame area is smaller than that of the black matrix. Generally, the width of the anisotropic conductive adhesive layer can be made very small, and compared with a metal layer in the prior art, the anisotropic conductive adhesive layer provided by the embodiment of the invention is narrower, and accordingly, the width of the black matrix is slightly larger than that of the anisotropic conductive adhesive layer, and is narrower than that of the black matrix in the prior art, so that the frame area of the touch screen is reduced, and the narrow frame design of the touch screen is realized.
Preferably, in the touch screen provided by the embodiment of the present invention, referring to fig. 4, the projection of the flexible circuit board 17 on the substrate 11 is located in the area of the projection of the black matrix 43 on the substrate 11. Specifically, the black matrix functions to shield the anisotropic conductive adhesive layer and the flexible circuit board, and therefore, the projection of the flexible circuit board on the substrate is located in the projection area of the black matrix on the substrate. After the flexible circuit board is electrically connected with the touch electrode through the anisotropic conductive adhesive layer, redundant flexible circuit boards can be folded, so that the projection of the flexible circuit board on the substrate base plate is located in the projection area of the black matrix on the substrate base plate.
Preferably, in the touch screen provided in the embodiment of the present invention, referring to fig. 5, the display area a of the touch screen further includes a touch electrode 44 electrically connected to the touch electrode connecting portion 41; specifically, referring to the front view of the touch screen shown in fig. 6, the touch electrodes in the display area a of the touch screen include touch driving electrodes 441 extending in a first direction and touch sensing electrodes 442 extending in a second direction, and the touch driving electrodes 441 and the touch sensing electrodes 442 are insulated from each other. Specifically, the material of the touch electrode connecting portion is the same as that of the touch electrode, for example, a transparent metal oxide, a transparent oxynitride, or the like is used, and preferably, an indium tin oxide material is used to fabricate the touch electrode connecting portion and the touch electrode.
Wherein, the first direction can be transverse, and the second direction is longitudinal; alternatively, the first direction may be a longitudinal direction and the second direction a transverse direction. Fig. 6 illustrates the touch driving electrodes extending in the transverse direction and the touch sensing electrodes extending in the longitudinal direction, but the touch driving electrodes and the touch sensing electrodes are not only representative of the touch electrode structure shown in fig. 6. The touch driving electrodes and the touch sensing electrodes are arranged on the same layer, and are electrically connected with each other at the bridging points through a different layer structure, and the structure of the specific bridging points is described in detail below, which is not repeated herein.
Preferably, in the touch screen provided in the embodiment of the present invention, referring to fig. 6, the flexible circuit board includes a first flexible circuit board 171 and a second flexible circuit board 172; the touch driving electrode 441 is electrically connected with the first flexible circuit board 171 through an anisotropic conductive adhesive layer; the touch sensing electrode 442 is electrically connected to the second flexible circuit board 172 through the anisotropic conductive adhesive layer. The first flexible circuit board and the second flexible circuit board are located in a frame area of the touch screen, the first flexible circuit board is connected with the touch driving electrodes extending along the transverse direction, the first flexible circuit board is located in a left frame or a right frame in the frame area, the second flexible circuit board is connected with the touch sensing electrodes extending along the longitudinal direction, and the second flexible circuit board is located in an upper frame or a lower frame in the frame area.
It should be noted that the touch driving electrode 441 is connected to the touch electrode connecting portion 41 in the frame region and electrically connected to the first flexible circuit board through a conductive adhesive, and the anisotropic conductive adhesive layer is not shown in fig. 6 because the anisotropic conductive adhesive layer is covered by the first flexible circuit board and the second flexible circuit board. The touch sensing electrode 442 is connected to the touch electrode connecting portion 41 in the frame region, and the conductive adhesive is electrically connected to the second flexible circuit board. The touch electrode connecting portion, the touch driving electrode and the touch sensing electrode may be fabricated simultaneously or in a time-sharing manner, and are not limited herein.
Preferably, in the touch screen provided in the embodiment of the present invention, the width of the anisotropic conductive adhesive layer is 0.6mm to 1.5 mm. Specifically, the width of the anisotropic conductive adhesive layer is 0.6mm to 1.5mm, so that the width of the black matrix may be slightly greater than or equal to the width of the anisotropic conductive adhesive layer. Therefore, when the black matrix is manufactured, compared with the width of the black matrix of 1.5mm-2mm in the prior art, the black matrix in the embodiment of the invention is narrower, thereby realizing the design of a narrow frame.
Based on the same inventive concept, referring to fig. 7, an embodiment of the present invention further provides a method for manufacturing a touch screen, where the method includes:
s701, forming a pattern of a touch electrode connecting part on a substrate;
the touch electrode connecting portion may be formed simultaneously with the touch electrode in the display area, or may be formed in time-sharing with the touch electrode in the display area, which is not limited herein. And forming a pattern of the touch electrode connecting part by adopting a yellow light processing technology.
S702, forming an anisotropic conductive adhesive layer above the touch electrode connecting part;
the anisotropic conductive adhesive layer formed above the touch electrode connecting part does not need to adopt a yellow light processing technology, and only a simple coating mode is adopted. Therefore, two yellow light processing processes for manufacturing the metal layer and the insulating layer are omitted.
S703, curing the anisotropic conductive adhesive layer to make the anisotropic conductive adhesive layer conductive and electrically connected to the touch electrode connecting portion and the flexible circuit board.
Since the anisotropic conductive adhesive layer does not have conductivity before the curing treatment is not performed, the curing treatment needs to be performed in order to make the anisotropic conductive adhesive layer conductive.
Preferably, in the method for manufacturing a touch screen provided in the embodiment of the present invention, the step S703 of curing the anisotropic conductive adhesive layer includes: and curing the anisotropic conductive adhesive layer by adopting a hot pressing process. The curing treatment of the anisotropic conductive adhesive layer can adopt a hot pressing mode to make the anisotropic conductive adhesive layer have conductivity. In addition, different curing treatment methods can be adopted for the anisotropic conductive adhesive layers made of different materials, which is not described herein.
It should be noted that the yellow light process includes four steps, glue coating, exposure, development and inspection. Specifically, the yellow light process used for forming each pattern in the above steps may include a photolithography process, or may include a photolithography process and an etching step, and may also include other processes for forming a predetermined pattern, such as printing, inkjet printing, and the like; the photolithography process is a process of forming a pattern using a photoresist, a mask plate, an exposure machine, and the like, including processes of film formation, exposure, development, and the like. In particular implementations, the corresponding patterning process may be selected based on the structure formed in the present invention.
In order to further describe the manufacturing process of the touch screen provided by the embodiment of the present invention, the following describes in detail the manufacturing process of the entire touch screen as an example.
Step one, forming a pattern of a black matrix 43 in a frame region of a substrate base plate, as shown in fig. 8 (a);
the frame area only takes one frame of the display area as an example for drawing description, and other frame areas are the same.
Step two, forming a pattern of the touch electrode 44 in the display area of the substrate, and forming a touch electrode connecting portion 41 electrically connected to the touch electrode in the display area above the black matrix, as shown in fig. 8 (b);
the touch electrodes include touch driving electrodes and touch sensing electrodes, and a front view of the touch electrodes is shown in fig. 6.
Step three, forming a pattern of an insulating layer 45 on the bridge point part of the touch electrode 44, as shown in fig. 8 (c);
the insulating layer is a transparent insulating layer, such as an OC transparent insulating layer, so as to avoid reducing the aperture ratio of the display region.
Step four, forming a transparent conductive layer 46 over the insulating layer 45, as shown in fig. 8 (d);
the transparent conductive layer may be made of the same material as the touch electrode or different material from the touch electrode. Specifically, the material of the transparent conductive layer may be an oxide, a nitride, a fluoride, or the like. And is not particularly limited herein.
Step five, forming an anisotropic conductive adhesive layer above the touch electrode connecting portion 41 in the frame region, as shown in fig. 8 (e);
specifically, an anisotropic conductive film layer is formed over a touch electrode connection portion connected to the touch driving electrode and over a touch electrode connection portion connected to the touch sensing electrode.
Step six, curing the anisotropic conductive adhesive layer 42 by means of hot pressing, and conducting the flexible circuit board 17 and the touch electrode connecting portion 41, as shown in fig. 8 (f).
The first flexible circuit board 171 is electrically connected to the touch driving electrodes 441 through the touch electrode connecting portion 41, the second flexible circuit board 172 is electrically connected to the touch sensing electrodes 441 through the touch electrode connecting portion 41, each row of touch driving electrodes are connected to each other, and each column of touch sensing electrodes are connected to each other through the transparent conductive layer 46 above the insulating layer 45, as shown in fig. 9.
According to the manufacturing method of the touch screen, the yellow light processing technology is adopted to sequentially form the graph of the black matrix, the graph of the touch electrode, the graph of the insulating layer and the graph of the transparent conducting layer, and therefore the manufacturing method of the touch screen can be completed only by four times of yellow light processing technologies.
Based on the same inventive concept, the embodiment of the invention further provides a touch device, which comprises any one of the touch screens provided by the embodiment of the invention. The touch device may be: any product or component with a touch 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. The implementation of the touch device can be referred to the above embodiment of the touch screen, and repeated details are not repeated.
In summary, the touch screen, the manufacturing method thereof and the touch device provided by the embodiment of the invention include that the touch screen includes a display area and a frame area, and the frame area of the touch screen includes a touch electrode connecting portion located on a substrate; an anisotropic conductive adhesive layer located above the touch electrode connecting portion; and the flexible circuit board is positioned above the anisotropic conductive adhesive layer, wherein the anisotropic conductive adhesive layer is used for electrically connecting the touch electrode connecting part and the flexible circuit board. Therefore, compared with the prior art, the touch electrode connecting part and the flexible circuit board are electrically connected through the metal layer and the insulating layer positioned above the metal layer in the frame area of the touch screen, and the touch electrode connecting part and the flexible circuit board are connected through the anisotropic conductive adhesive layer, so that two yellow light processing processes of manufacturing the metal layer and the insulating layer positioned above the metal layer in the touch screen are saved, and the cost of the touch screen is reduced.
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 (8)
1. A touch screen comprising a display area and a bezel area, wherein the bezel area of the touch screen comprises:
a touch electrode connecting part located on the substrate;
an anisotropic conductive adhesive layer located above the touch electrode connecting portion, the anisotropic conductive adhesive layer being laid on the touch electrode connecting portion;
the flexible circuit board is positioned above the anisotropic conductive adhesive layer, wherein the anisotropic conductive adhesive layer is used for electrically connecting the touch electrode connecting part and the flexible circuit board;
the touch screen comprises a substrate, a touch electrode connecting part, an anisotropic conductive adhesive layer, a substrate base plate and a touch frame area, wherein the frame area of the touch screen further comprises a black matrix positioned between the substrate base plate and the touch electrode connecting part, and the projection of the anisotropic conductive adhesive layer on the substrate base plate is positioned in the projection area of the black matrix on the substrate base plate;
the flexible circuit board is in a folded state, and the projection of the flexible circuit board on the substrate base plate is located in the area of the projection of the black matrix on the substrate base plate.
2. The touch screen of claim 1, wherein the width of the black matrix is greater than or equal to the width of the anisotropic conductive glue layer.
3. The touch screen of claim 1, wherein the display area of the touch screen further comprises touch electrodes electrically connected to the touch electrode connections;
the touch control electrodes comprise touch control driving electrodes extending along a first direction and touch control induction electrodes extending along a second direction, and the touch control driving electrodes and the touch control induction electrodes are insulated from each other.
4. The touch screen of claim 3, wherein the flexible circuit board comprises a first flexible circuit board and a second flexible circuit board;
the touch driving electrode is electrically connected with the first flexible circuit board through the anisotropic conductive adhesive layer; the touch sensing electrode is electrically connected with the second flexible circuit board through the anisotropic conductive adhesive layer.
5. The touch screen of claim 1, 2 or 4, wherein the width of the anisotropic conductive glue layer is 0.6mm-1.5 mm.
6. A touch device comprising a touch screen according to any of claims 1 to 5.
7. A method of manufacturing a touch screen according to any of claims 1 to 5, the method comprising:
sequentially forming graphs of the black matrix and the touch electrode connecting part on the substrate base plate;
forming the anisotropic conductive adhesive layer above the touch electrode connecting part;
and curing the anisotropic conductive adhesive layer to ensure that the anisotropic conductive adhesive layer has conductivity and is electrically connected with the touch electrode connecting part and the flexible circuit board.
8. The method of claim 7, wherein curing the anisotropic conductive adhesive layer comprises:
and curing the anisotropic conductive adhesive layer by adopting a hot pressing process.
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| CN201610342077.6A CN105786264B (en) | 2016-05-20 | 2016-05-20 | Touch screen, manufacturing method thereof and touch device |
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| CN201610342077.6A CN105786264B (en) | 2016-05-20 | 2016-05-20 | Touch screen, manufacturing method thereof and touch device |
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| CN106354351B (en) | 2016-08-30 | 2019-04-05 | 京东方科技集团股份有限公司 | Touch base plate and production method, display device, fingerprint identification device and method |
| CN110119217A (en) * | 2018-02-05 | 2019-08-13 | 深圳莱宝高科技股份有限公司 | The touch screen and terminal device of tin indium oxide film layer structure |
| CN108984030B (en) * | 2018-07-04 | 2021-07-09 | 东莞市显触光电科技有限公司 | High-weather-resistance bonding method for upper electrode and lower electrode of touch screen |
| CN110825253A (en) * | 2018-08-13 | 2020-02-21 | 南昌欧菲光科技有限公司 | Touch control assembly and touch display screen |
| CN110231891A (en) * | 2019-07-24 | 2019-09-13 | 蓝思科技（长沙）有限公司 | A kind of flexible cover plate and preparation method thereof, flexible OLED display |
| CN110825268B (en) * | 2019-11-12 | 2022-12-02 | 业成科技（成都）有限公司 | Touch module, touch display device and electronic equipment |
| WO2024130659A1 (en) * | 2022-12-22 | 2024-06-27 | 京东方科技集团股份有限公司 | Touch substrate, touch display panel, and touch display apparatus |
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| TW201530400A (en) * | 2014-01-22 | 2015-08-01 | Wintek Corp | Touch device |
| CN204215117U (en) * | 2014-12-02 | 2015-03-18 | 昆山国显光电有限公司 | Display device |
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| CN102915168A (en) * | 2010-02-02 | 2013-02-06 | 展触光电科技股份有限公司 | Single-layer projection capacitive touch panel |
| CN103336641A (en) * | 2013-06-18 | 2013-10-02 | 苏州市健邦触摸屏技术有限公司 | Capacitive touch screen and circuit lead-out method therefor |
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| CN105573539A (en) * | 2014-10-17 | 2016-05-11 | 宸鸿光电科技股份有限公司 | Touch panel and manufacture method thereof |
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