CN110297564B - Touch module and touch display device - Google Patents
Touch module and touch display device Download PDFInfo
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- CN110297564B CN110297564B CN201910578174.9A CN201910578174A CN110297564B CN 110297564 B CN110297564 B CN 110297564B CN 201910578174 A CN201910578174 A CN 201910578174A CN 110297564 B CN110297564 B CN 110297564B
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- film layer
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- adhesive film
- screen assembly
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- 239000002313 adhesive film Substances 0.000 claims abstract description 80
- 239000000758 substrate Substances 0.000 claims description 35
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical group [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 19
- 229910052709 silver Inorganic materials 0.000 claims description 11
- 239000004332 silver Substances 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- PYJJCSYBSYXGQQ-UHFFFAOYSA-N trichloro(octadecyl)silane Chemical compound CCCCCCCCCCCCCCCCCC[Si](Cl)(Cl)Cl PYJJCSYBSYXGQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims description 2
- 125000000524 functional group Chemical group 0.000 claims description 2
- 238000004528 spin coating Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 102
- 230000008859 change Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Classifications
-
- 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
Abstract
The embodiment of the disclosure provides a touch module and a touch display device, the touch module comprises a touch screen assembly, a circuit board and a flexible circuit board, a lead of the touch screen assembly extends to the side face, one end of the flexible circuit board is arranged on the side face of the touch screen assembly through a conductive adhesive film layer and is electrically connected with the lead, and the other end of the flexible circuit board is connected with the circuit board. The touch module of the embodiment of the disclosure is characterized in that the flexible circuit board is adhered to the side surface of the touch screen assembly through the conductive adhesive film layer and is electrically connected with the lead wires extending to the side surface of the touch screen assembly, so that the narrow frame design of the electronic equipment is realized.
Description
Technical Field
The disclosure relates to the technical field of electronic equipment, in particular to a touch module and a touch display device.
Background
With the development of electronic devices, narrow-frame touch products are increasingly favored by users due to their elegant appearance and excellent display effect. The circuit board of the touch electronic device is usually connected with the lead wires of the touch screen assembly through a flexible circuit board, while in the prior art, the flexible circuit board is usually required to wrap part of the edge of the touch screen assembly and be connected with the lead wires arranged on one side of the touch screen assembly, and the wrapped part of the touch screen assembly forms a frame. Such a connection method results in a wider frame width of the touch electronic device.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a touch module and a touch display device with a narrower frame width.
According to a first scheme of this disclosure, there is provided a touch control membrane group, including touch control screen subassembly, circuit board and flexible line way board, the lead wire of touch control screen subassembly extends to the side, the one end of flexible line way board passes through conductive adhesive film layer setting and is in touch control screen subassembly's side and with the lead wire electricity is connected, the other end of flexible line way board with the circuit board is connected.
In some embodiments, the touch screen assembly further includes a substrate, and the leads are disposed on a side of the substrate opposite the touch operation surface.
In some embodiments, the touch screen assembly further includes a touch electrode layer disposed on the substrate and on the same side as the leads.
In some embodiments, the touch screen assembly includes a panel and a substrate disposed opposite each other, the leads being disposed between the panel and the substrate.
In some embodiments, the touch screen assembly further includes a touch electrode layer disposed between the panel and the substrate.
In some embodiments, the conductive adhesive film layer is an anisotropic conductive adhesive film layer.
In some embodiments, the touch screen further comprises an isotropic conductive adhesive film layer, wherein one side of the isotropic conductive adhesive film layer is connected with the side surface of the touch screen component and the leads, and the other side of the isotropic conductive adhesive film layer is connected with the anisotropic conductive adhesive film layer.
In some embodiments, the isotropic conductive film layer is a silver-based conductive film layer, a gold-based conductive film layer, a copper-based conductive film layer, or a carbon-based conductive film layer.
In some embodiments, the isotropic conductive adhesive film layer includes a plurality of adhesive film units, and the plurality of adhesive film units are sequentially disposed along a lateral length direction of the touch screen assembly.
According to a second aspect of the present disclosure, a touch display device is provided, including the touch module as described above.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
This section provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all of the features of the technology disclosed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure, not to limit the present disclosure.
Fig. 1 is a schematic view of a part of a structure of an embodiment of a touch module according to an embodiment of the disclosure;
fig. 2 is a schematic diagram illustrating the mating connection of an isotropic conductive adhesive film layer and a conductive adhesive film layer of a touch module according to an embodiment of the disclosure;
fig. 3 is a schematic partial structure diagram of another embodiment of a touch module according to an embodiment of the disclosure.
Reference numerals:
1-a touch screen assembly; 2-a circuit board; 3-a flexible circuit board; 4-lead wires; 5-a substrate; 6-a touch electrode layer; 7-panels; 8-a conductive adhesive film layer; 9-an isotropic conductive adhesive film layer; 10-an adhesive film unit; 11-touch control operation surface; 12-side.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.
Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items.
In order to keep the following description of the embodiments of the present disclosure clear and concise, the present disclosure omits detailed description of known functions and known components.
Fig. 1 is a schematic view of a part of a structure of an embodiment of a touch module according to an embodiment of the disclosure, and referring to fig. 1, the touch module according to an embodiment of the disclosure includes a touch screen assembly 1, a circuit board 2, and a flexible circuit board 3; the touch screen assembly 1 comprises a touch operation surface 11 for a user to touch and a side surface 12 adjacent to the touch operation surface 11, the lead 4 in the touch screen assembly 1 extends to the side surface 12, the flexible circuit board 3 connects the circuit board 2 with the touch screen assembly 1 for transmitting signals received by the touch screen assembly 1 to the circuit board 2 through the flexible circuit board 3, specifically, one end of the flexible circuit board 3 is arranged on the side surface 12 of the touch screen assembly 1 through the conductive adhesive film layer 8 and is electrically connected with the lead 4 in the touch screen assembly 1, the other end of the flexible circuit board 3 is connected with the circuit board 2, so that the circuit board 2 is electrically connected with the touch screen assembly 1 through the flexible circuit board 3, the conductive adhesive film layer 8 and the lead 4, thereby driving the touch screen assembly 1 through the circuit board 2 or receiving input signals of the touch screen assembly 1, wherein, in order to fix the flexible circuit board 3 on the side surface of the touch screen assembly 1, the flexible circuit board 3 can be arranged on the side surface 12 of the touch screen assembly 1 in any possible way, for example, by bonding.
With the above structure, when applied to a touch display device, the touch operation surface 11 of the touch screen assembly 1 forms a display surface of the touch display device, for a user to view display contents and perform touch operation, and the side 12 of the touch screen assembly 1 and the flexible circuit board 3 and the conductive adhesive film layer 8 connected to the side 12 are wrapped by the side of the outer casing (not shown in the figure) of the touch display device to form a frame. The flexible circuit board 3 is arranged on the side face 12 of the touch screen assembly 1 through the conductive adhesive film layer 8 and is electrically connected with the lead 4 extending to the side face 12 of the touch screen assembly 1, so that the flexible circuit board 3 does not need to be bent towards the touch operation face 11 and does not need to wrap part of the edge of the touch operation assembly 1, the projection width of the flexible circuit board 3 and the conductive adhesive film layer 8 on the touch operation face 11 is narrower (namely, the width of the flexible circuit board 3 and the conductive adhesive film layer 8 in the X-axis direction in fig. 1 is narrower), and the narrow-frame design of the electronic equipment is realized.
Considering that the conductive adhesive film layer 8 can fix the flexible circuit board 3 at the side of the touch screen assembly 1, the conductive adhesive film layer 8 needs to be able to transmit signals in a certain direction. In some embodiments, the conductive film layer 8 may be an anisotropic conductive film layer. The anisotropic conductive adhesive film layer has conductivity in the film thickness direction and insulativity in the film surface direction perpendicular to the film thickness direction, the purpose of arranging the flexible circuit board 3 on the side surface 12 of the touch screen assembly 1 can be achieved by adopting the anisotropic conductive adhesive film layer, the purpose of electrically connecting the flexible circuit board 3 and the leads 4 can be achieved, insulation can be achieved on the touch operation surface 11 or the surface opposite to the touch operation surface 11, and short circuit is avoided. For example, taking the electronic device as a tiled display screen, a layer of anisotropic conductive film may be coated on the side 12 of the touch screen assembly 11, then the flexible circuit board 3 is attached to the anisotropic conductive film, and the current between the flexible circuit board 3 and the lead 4 only flows parallel to the touch operation surface 11, but does not flow along the side 12 of the touch screen assembly 1, and even if the conductor contacts the anisotropic conductive film on the side of the touch operation surface 11 or the side facing away from the touch operation surface 11, the current will not be conducted. Of course, other types of conductive adhesive film layers may be used for the conductive adhesive film layer 8, or a composite conductive adhesive film layer may be used.
In some embodiments, the electronic device may further include an isotropic conductive adhesive film layer 9, where one side of the isotropic conductive adhesive film layer 9 is fixed on the side 12 of the touch screen assembly 1 and connected to the lead 4, and the other side is connected to the anisotropic conductive adhesive film layer. Thus, the lead 4 is electrically connected with the isotropic conductive adhesive film layer 9, the contact area is enlarged through the isotropic conductive adhesive film layer 9, the current transmission area is enlarged, and then the lead 4 is connected with the flexible circuit board 3 through the anisotropic conductive adhesive film layer, so that the current transmission effect between the flexible circuit board 3 and the lead 4 is better, and the reliability is higher. For example, as shown in fig. 1, assuming that the width of the lead 4 in the thickness direction of the touch screen assembly 1 (i.e., the Y-axis direction in fig. 1) is H1, the width of the anisotropic conductive film layer in the thickness direction of the touch screen assembly 1 (i.e., the Y-axis direction in fig. 1) is H2, and H1 is smaller than H2, if the isotropic conductive film layer 9 is not provided, the width of the anisotropic conductive film layer that is capable of conducting current between the flexible circuit board 3 and the lead 4 is only H1, if the isotropic conductive film layer 9 is coated on the side 12 of the touch screen assembly 1, then the anisotropic conductive film layer 9 is coated, finally, the flexible circuit board 3 is mounted, and assuming that the width of the isotropic conductive film layer 9 in the thickness direction of the touch screen assembly 1 (i.e., the Y-axis direction in fig. 1) is H3, H3 is larger than H1 and smaller than H2, the current flowing out through the lead 4 can flow in the direction parallel to the touch operation surface 11, or can flow to the anisotropic conductive film layer through the isotropic conductive film layer 11, and then the anisotropic conductive film layer can flow to the anisotropic conductive layer 3.
In some embodiments, the isotropic conductive adhesive film layer 9 may include a plurality of adhesive film units 10, and the plurality of adhesive film units 10 are sequentially disposed along the length direction of the side 12 of the touch screen assembly 1 as shown in fig. 2. In this way, the anisotropic conductive film layer is adhered to the side 12 of the touch screen assembly 1 through the plurality of film units 10 and connected to the leads 4. For example, the adhesive film unit 10 may be a rectangular adhesive film unit, and the plurality of adhesive film units 10 may be sequentially disposed along the length direction (i.e. the direction perpendicular to the paper surface in fig. 1 and the direction of the Z axis in fig. 2) of the side 12 of the touch screen assembly 1 at a specific distance, so that not only can the reliable connection between the flexible circuit board 3 and the lead 4 be ensured, but also the usage amount of the isotropic conductive adhesive film can be reduced, and the production cost can be reduced.
In some embodiments, the isotropic conductive film layer 9 may be a silver-based conductive film layer, a gold-based conductive film layer, a copper-based conductive film layer, or a carbon-based conductive film layer. Specifically, in this embodiment, the isotropic conductive adhesive film layer 9 is a silver-based conductive adhesive film layer, and the silver-based conductive adhesive film has better conductivity and lower cost.
In some embodiments, as shown in fig. 1, the touch screen assembly 1 may include a substrate 5 and leads 4, where the leads 4 are disposed on a side of the substrate 5 opposite the touch operation surface 11. For example, the substrate 5 may include a first surface, a second surface (i.e. a side surface) adjacent to the first surface, and a third surface opposite to the first surface and adjacent to the second surface, the first surface of the substrate 5 forms a touch operation surface 11, the leads 4 are disposed on the third surface and extend to the second surface, and the flexible circuit board 3 is adhered to the second surface through the conductive adhesive film layer 8 and connected to the leads 4. Specifically, the substrate 5 may be a glass substrate.
In some embodiments, the touch screen assembly 1 further includes a touch electrode layer 6 disposed on the substrate 5 and on the same side as the leads 4. That is, the touch electrode layer 6 is disposed on the third surface of the substrate 5, the touch electrode layer 6 is used for sensing that the user's finger is operating on the touch operation surface 11, when the user's finger is performing touch operation on the touch operation surface 11, the electric field of the touch electrode layer 6 will change, and the touch operation of the user's finger can be calculated according to the electric field change of the touch electrode layer 6.
In some embodiments, as shown in fig. 3, the touch screen assembly 1 may include a panel 7 and a substrate 5 disposed opposite to each other, where a touch operation surface 11 is formed on a surface of the panel 7 facing away from the substrate 5, and the lead 4 is disposed between the panel 7 and the substrate 5. Still taking the substrate 5 as an example, the substrate 5 includes a first surface, a second surface adjacent to the first surface, and a third surface opposite to the first surface and adjacent to the second surface, the first surface is a surface close to the panel 7, the conductive adhesive film layer 8 may be coated on the second surface of the substrate 5, and then the flexible circuit board 3 is attached to the conductive adhesive film layer 8, so that the flexible circuit board 3 is adhered to the substrate 5 through the conductive adhesive film layer 8 and electrically connected to the leads 4, that is, the side 12 of the touch screen assembly 1 is formed by the second surface of the substrate 5, and at this time, the width of the panel 7 may be slightly wider than the width of the substrate 5, so as to protect the flexible circuit board 3 and the conductive adhesive film layer 8 while protecting the substrate 5. Of course, the flexible circuit board 3 may be adhered to the panel 7 and the substrate 5 through the conductive adhesive film layer 8, and in this case, the side 12 of the touch screen assembly 11 is formed by the panel 7 and the substrate 5 together.
In some embodiments, the touch screen assembly 1 further comprises a touch electrode layer 6 disposed between the panel 7 and the substrate 5. The touch electrode layer 6 is used for sensing the operation of the user's finger on the touch operation surface 11, that is, sensing the touch operation of the user on the surface of the panel 7 facing away from the substrate 5, when the user's finger touches the touch operation surface 11 to perform touch operation, the electric field of the touch electrode layer 6 will change, and the touch operation of the user's finger can be calculated according to the electric field change of the touch electrode layer 6. In practical applications, the touch screen assembly 1 may further comprise other functional layers between the touch electrode layer 6 and the panel 7.
The embodiment of the disclosure also provides a touch display device, which comprises the touch module. The touch display device can be electronic equipment such as a television, a display, a computer integrated machine, a tablet personal computer or a smart phone, and the like, and will not be described in detail here. Taking a tiled display as an example, the tiled display may include a housing and the touch module as described above, where the housing may be a flat rectangular housing, the touch screen assembly 1 is disposed on a front side of the housing and forms a display surface of the tiled display, the lead 4 of the touch screen assembly 1 extends to a side surface thereof, the side surface 12 of the touch screen assembly 1 is provided with a conductive film layer 8 electrically connected with the lead 4, the circuit board 2 may be disposed in the housing and near the side surface 12 of the touch screen assembly 1, the circuit board 2 may be disposed along a direction perpendicular to the display surface of the tiled display (i.e., along a Y-axis direction in fig. 1), that is, disposed along a direction parallel to the side surface of the flat rectangular housing, one end of the flexible circuit board 3 is adhered to the side surface 12 of the touch screen assembly 1 through the conductive film layer 8 and electrically connected with the lead 4, the other end of the flexible circuit board 3 is connected with the circuit board 2, the flexible circuit board 3 can be fixed to the side surface of the touch screen assembly 1 through the conductive film layer 8 to achieve a narrow effect, and also can well transmit an electric signal, and the flexible board 3 is free from bending to the side surface of the touch screen assembly 1 and the flexible circuit board 3 has a small thickness than the flexible circuit board 3 and the flexible circuit board 3. The frame width that needs to reserve when this concatenation formula display screen designs is narrower, and when a plurality of concatenation formula display screens splice into a great screen, the clearance between the screen of adjacent concatenation formula display is narrower, is favorable to improving display effect and user experience.
The embodiment of the disclosure provides a preparation method of a touch module, which specifically comprises the following steps:
s1, forming a conductive adhesive film layer 8 on a side surface 12 of a touch screen assembly 1, and connecting the conductive adhesive film layer 8 with a lead 4 extending to the side surface 12 on the touch screen assembly 1;
s2, one end of the flexible circuit board 3 is connected with the conductive adhesive film layer 8, so that one end of the flexible circuit board 3 is arranged on the side face 12 of the touch screen assembly 1 through the conductive adhesive film layer 8 and is electrically connected with the lead 4, and the other end of the flexible circuit board 3 is connected with the circuit board 2.
In some embodiments, the conductive adhesive film layer 8 may be an anisotropic conductive adhesive film layer.
In some embodiments, between step S1, that is, before the forming of the anisotropic conductive film layer on the side 12 of the touch screen assembly 1, the method may further include: s0, forming an anisotropic same-polarity conductive adhesive film layer on the side face 12 of the touch screen assembly 1 so that one side of the isotropic conductive adhesive film layer 9 is connected with the side face 12 of the touch screen assembly 1 and the lead 4, and then forming an anisotropic conductive adhesive film layer on the isotropic conductive adhesive film layer 9 so that the other side of the isotropic conductive adhesive film layer 9 is connected with the anisotropic conductive adhesive film layer.
In some embodiments, the isotropic conductive film layer 9 may be a silver-based conductive film layer, a gold-based conductive film layer, a copper-based conductive film layer, or a carbon-based conductive film layer.
In some embodiments, taking the isotropic conductive adhesive film layer 9 as a silver-based conductive adhesive film layer as an example, the method for forming the silver-based conductive adhesive film layer may specifically include:
s001, spin-coating and depositing nano silver wires on the side face 12 of the touch screen assembly 1;
s002, soaking the touch screen component 1 deposited with the nano silver wires in Octadecyl Trichlorosilane (OTS) solution to introduce anti-adhesion functional groups on the side 12 deposited with the nano silver wires;
and S003, coating ultraviolet light curing adhesive on the nano silver wire, and performing ultraviolet light curing treatment on the ultraviolet light curing adhesive to form a silver conductive adhesive film layer on the side face 12 of the touch screen assembly 1.
Furthermore, although exemplary embodiments have been described herein, the scope thereof includes any and all embodiments having equivalent elements, modifications, omissions, combinations (e.g., of the various embodiments across schemes), adaptations or alterations based on the present disclosure. Elements in the claims are to be construed broadly based on the language employed in the claims and are not limited to examples described in the present specification or during the practice of the present application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.
The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more aspects thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above detailed description, various features may be grouped together to streamline the disclosure. This is not to be interpreted as an intention that the disclosed features not being claimed are essential to any claim. Rather, the disclosed subject matter may include less than all of the features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with one another in various combinations or permutations. The scope of the disclosure should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.
The above embodiments are merely exemplary embodiments of the present disclosure, which are not intended to limit the present disclosure, the scope of which is defined by the claims. Various modifications and equivalent arrangements of parts may be made by those skilled in the art, which modifications and equivalents are intended to be within the spirit and scope of the present disclosure.
Claims (7)
1. The touch module comprises a touch screen assembly, a circuit board and a flexible circuit board, and is characterized in that the touch screen assembly comprises a touch operation surface and a side surface adjacent to the touch operation surface, a lead of the touch screen assembly extends to the side surface, one end of the flexible circuit board is adhered to the side surface of the touch screen assembly through an anisotropic conductive adhesive film layer and an isotropic conductive adhesive film layer and is electrically connected with the lead, and the other end of the flexible circuit board is connected with the circuit board;
one side of the isotropic conductive adhesive film layer is fixed on the side surface of the touch screen assembly and is connected with the lead wire, and the other side of the isotropic conductive adhesive film layer is connected with the flexible circuit board through the anisotropic conductive adhesive film layer;
the isotropic conductive adhesive film layer is a silver-based conductive adhesive film layer, and the silver-based conductive adhesive film layer is formed by the following method:
spin-coating and depositing nano silver wires on the side surface of the touch screen component;
immersing the touch screen component deposited with the nano silver wire in octadecyl trichlorosilane solution to introduce an anti-adhesion functional group on the side surface deposited with the nano silver wire;
and coating ultraviolet light curing adhesive on the nano silver wire, and performing ultraviolet light curing treatment on the ultraviolet light curing adhesive to form a silver conductive adhesive film layer on the side surface of the touch screen assembly.
2. The touch module of claim 1, wherein the touch screen assembly further comprises a substrate, and the leads are disposed on a side of the substrate opposite the touch surface.
3. The touch module of claim 2, wherein the touch screen assembly further comprises a touch electrode layer disposed on the substrate and on the same side as the leads.
4. The touch module of claim 1, wherein the touch screen assembly comprises a panel and a substrate disposed opposite each other, the leads being disposed between the panel and the substrate.
5. The touch module of claim 4, wherein the touch screen assembly further comprises a touch electrode layer disposed between the panel and the substrate.
6. The touch module of claim 1, wherein the isotropic conductive adhesive film layer comprises a plurality of adhesive film units, and the plurality of adhesive film units are sequentially arranged along a lateral length direction of the touch screen assembly.
7. A touch display device, comprising the touch module of any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910578174.9A CN110297564B (en) | 2019-06-28 | 2019-06-28 | Touch module and touch display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910578174.9A CN110297564B (en) | 2019-06-28 | 2019-06-28 | Touch module and touch display device |
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| CN110297564A CN110297564A (en) | 2019-10-01 |
| CN110297564B true CN110297564B (en) | 2024-03-29 |
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| CN111522467A (en) * | 2020-04-26 | 2020-08-11 | 南昌欧菲显示科技有限公司 | Touch panel, preparation method thereof and touch panel assembly |
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| CN104166477A (en) * | 2014-08-11 | 2014-11-26 | 深圳市宇顺电子股份有限公司 | Method for manufacturing touch control screen and touch control screen |
| CN104199570A (en) * | 2014-08-11 | 2014-12-10 | 深圳市宇顺电子股份有限公司 | Touch screen manufacturing method and touch screen |
| CN108777114A (en) * | 2018-06-26 | 2018-11-09 | 上海中航光电子有限公司 | Display panel and its manufacturing method, display device and mosaic screen |
| CN109669569A (en) * | 2018-12-04 | 2019-04-23 | 盈天实业(深圳)有限公司 | Touch display screen and preparation method thereof, electronic equipment |
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