CN111625152A - Narrow-frame flexible touch sensing module and manufacturing method of OLED touch display module - Google Patents
Narrow-frame flexible touch sensing module and manufacturing method of OLED touch display module Download PDFInfo
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- CN111625152A CN111625152A CN201910151365.7A CN201910151365A CN111625152A CN 111625152 A CN111625152 A CN 111625152A CN 201910151365 A CN201910151365 A CN 201910151365A CN 111625152 A CN111625152 A CN 111625152A
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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
- 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
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04102—Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
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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 relates to the technical field of liquid crystal, and provides a narrow-frame flexible touch sensing module and a manufacturing method of an OLED touch display module, which are used for solving the problem that the width of a frame of the touch module is difficult to further reduce. The invention provides a manufacturing method of a narrow-frame flexible touch sensing module, which comprises the following steps: s1, preparing a transparent touch pattern on a rigid substrate; s2, printing, sensitizing and developing on the rigid substrate with the transparent touch pattern formed thereon to form a narrow-frame conduction network; and S3, transferring the narrow frame conducting network and the touch pattern to the flexible cover plate to obtain the touch sensing module. The bus width of the conductive network is reduced, and the reduction of the frame width of the whole module is realized.
Description
Technical Field
The invention relates to the technical field of liquid crystal, in particular to a narrow-frame flexible touch sensing module and a manufacturing method of an OLED touch display module.
Background
The Touch technology is adopted mostly in large-scale industrial equipment, household appliances and the like in the early period, the real life of the Touch technology is brought to the public, the Touch function is totally invaded into consumer electronic products such as mobile phones, NB, tablet computers and the like from the birth of the apple iPod Touch in 2007, the consumer electronic products mainly comprise resistance type, capacitance type, surface sound wave type and infrared induction type, the capacitance type Touch screen is divided into self-capacitance type or mutual capacitance type, and the mutual capacitance type Touch screen is a mainstream product in the market due to the characteristics of direct, efficient, accurate, smooth, fashionable and the like.
At present, the capacitive touch screen mainly adopts GG, GF, GFF and other externally-hung structures, and the OCA and other adhesives are inevitably used to assist in lamination, so that the thickness and weight of the whole touch display panel are increased, the product transmittance is reduced, and the development trend of lightness, thinness and flexibility of the touch display panel is not facilitated.
The touch control function switches on the network, and the conventional mode is the direct printing shaping of conductive paste, or uses laser etching, because lithography apparatus and laser can the precision restriction of equipment, the network frame is all great is drawn forth to the function of the touch-control sensing module that these two kinds of technologies were prepared, and to a great extent has restricted the development of the narrow frame of touch-control display module group today.
Disclosure of Invention
The invention solves the technical problem that the width of a frame of a touch module is difficult to further reduce, and provides a narrow-frame flexible touch sensing module and a manufacturing method of an OLED touch display module.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a manufacturing method of a narrow-frame flexible touch sensing module comprises the following steps: s1, preparing a transparent touch pattern on a rigid substrate; s2, printing, sensitizing and developing on the rigid substrate with the transparent touch pattern formed thereon to form a narrow-frame conduction network; and S3, transferring the narrow frame conducting network and the touch pattern to the flexible cover plate to obtain the touch sensing module.
The preparation of the conducting network is realized by the process of photosensitive curing, developing and etching of photosensitive conductive slurry, so that the bus width of the conducting network is greatly reduced; the conductive network and the touch pattern are transferred to the flexible cover plate without being attached by adhesive glue such as OCA (optical clear adhesive) and the like; the reduction of the frame width of the whole module is realized by reducing the bus width of the conductive network; the module is transferred to the flexible cover plate through a transfer printing process, so that the lightness, thinness and flexibility of the module can be obviously improved.
Preferably, the method for preparing the transparent touch pattern on the rigid substrate comprises the following steps: s11, performing hydrophilic treatment on the rigid substrate to improve the hydrophilicity of the surface of the rigid substrate; s12, coating a nano conductive dispersion liquid on the rigid substrate subjected to hydrophilic treatment, and heating to remove a solvent in the dispersion liquid to form a transparent conductive network; s13, etching the transparent conductive network to form a touch pattern. The touch pattern is formed by etching a transparent conductive network formed on the substrate by the nano conductive dispersion liquid, and has excellent conductivity.
Preferably, the method for printing, sensitizing and developing on the rigid substrate with the transparent touch pattern is as follows: s21, printing photosensitive conductive paste on the touch pattern; and S22, carrying out exposure, development and heat treatment on the conductive paste to form a narrow-frame conduction network. The narrow frame conduction network is formed by solidifying the conductive slurry on the touch pattern, so that the bus width of the conductive network is greatly reduced, and the critical effect on the frame width of the whole module is achieved.
Preferably, the method for transferring the narrow-border conducting network and the touch pattern to the flexible cover plate is to transfer the narrow-border conducting network and the touch pattern to the flexible cover plate together through a photo-curing polymer material, and specifically includes: s31, coating a photocuring high polymer material on the narrow frame conducting network and the touch pattern, heating, removing a solvent, and attaching a flexible cover plate; s32, carrying out photocuring on the photocuring polymer through the flexible cover plate, and forming a polymer curing layer among the narrow-frame conduction network, the touch pattern and the flexible cover plate; and S33, separating the touch pattern, the narrow frame conducting network, the polymer curing layer and the flexible cover plate from the rigid substrate to obtain the touch sensing module. The conducting network and the touch pattern are transferred to the flexible cover plate together, and the light, thin and flexible touch screen does not need to be attached with the assistance of OCA (optical clear adhesive) and other adhesive, so that the key effect is realized; the photo-curing polymer bears and transfers the touch image-text and the narrow frame to communicate the whole of the network.
Preferably, the nano conductive dispersion liquid contains nano conductive materials, and the nano conductive materials comprise carbon nanotubes, graphene, silver nanowires, copper nanowires and metal networks; and in the process of coating the hydrophilic-treated rigid substrate with the nano conductive dispersion liquid, heating to 130-150 ℃ to remove the solvent in the dispersion liquid, thereby forming a transparent conductive network. The nano conductive material is uniformly distributed in the transparent conductive network.
Preferably, the conductive material in the conductive paste is silver paste, carbon nanotubes, graphene, silver nanowires, copper nanowires, or a metal network. The nano conductive material in the conductive paste can improve the conductive performance of the conductive network.
Preferably, the thickness of the photocuring polymer material coated on the narrow-frame conducting network is 5-50 μm, and the solid content of the photocuring polymer material is 100%. After photocuring macromolecular material's thickness is less than OCA adhesive layer, the thickness of reduction module that can show.
Preferably, the flexible cover plate is processed by one or more of scratch-resistant coating treatment, pattern silk-screen printing treatment, surface hardening treatment and water-oxygen barrier treatment. The treated flexible cover plate can have more effects and produce more effects.
Preferably, the surface area of the conductive paste printed on the touch pattern is not greater than the area of the touch pattern. The conductive paste is used for forming a narrow-frame conductive network, so that the conductive paste is basically coated on the periphery of the touch pattern.
Preferably, the narrow border conduction network forms a hollow frame body, and a region of the touch pattern not covered by the narrow border conduction network and a side of the narrow border conduction network away from the touch pattern are coated with a light-cured polymer material.
A manufacturing method of a narrow-frame flexible OLED touch display module is characterized in that the touch sensing module manufactured by the manufacturing method is applied to the manufacturing method of the OLED touch display module, and specifically comprises the following steps: s4, attaching the touch sensing module to an OCA (optical clear adhesive) layer to obtain a touch screen sensor assembly; and S5, attaching the OCA adhesive layer of the touch screen sensor assembly to an OLED display screen to obtain the narrow-frame flexible OLED touch display module. The touch control display module is adhered to the OLED display screen, so that the touch control display module is produced
A narrow-frame flexible OLED touch display module comprises a touch sensing module and an OLED display screen, wherein the touch sensing module is connected with the OLED display screen; the touch-control sensing module passes through the OCA gluing layer and is connected with the OLED display screen, the touch-control sensing module includes flexible apron, the solid layer of polymer, touch-control pattern and narrow frame conduction network, the touch-control pattern switches on the internet connection with the narrow frame, narrow frame conduction network is connected with the solid layer of polymer, the solid layer of polymer is connected with flexible apron, the touch-control pattern is connected with the OCA gluing layer.
The preparation of the conducting network is realized by the process of photosensitive curing, developing and etching of photosensitive conductive slurry, so that the bus width of the conducting network is greatly reduced; the conductive network and the touch pattern are transferred onto the flexible cover plate, and adhesion of adhesive glue such as OCA (optical clear adhesive) is not needed.
The reduction of the frame width of the whole module is realized by reducing the bus width of the conductive network; the module is transferred to the flexible cover plate through a transfer printing process, so that the lightness, thinness and flexibility of the module can be obviously improved.
Preferably, the thickness of the cured polymer layer is 5 to 50 μm.
Preferably, the surface area of the narrow-frame conducting network is not greater than the surface area of the touch pattern.
Preferably, the narrow frame conduction network is a hollow frame.
Preferably, one side of the narrow frame conducting network, which is far away from the touch pattern, is connected with the polymer curing layer, and a part of the touch pattern, which is not covered by the narrow frame conducting network, is connected with the polymer curing layer.
Compared with the prior art, the invention has the beneficial effects that: the bus width of the conductive network is reduced, so that the frame width of the whole module is reduced; the module is transferred to the flexible cover plate through a transfer printing process, so that the lightness, thinness and flexibility of the module can be obviously improved.
Drawings
Fig. 1 is a schematic flow chart of a method for manufacturing a narrow-bezel flexible touch sensor module.
Fig. 2 is another schematic flow chart of a method for manufacturing a narrow-bezel flexible touch sensor module.
Fig. 3 is a schematic flow chart of a manufacturing method of a narrow-bezel flexible OLED touch display module.
Fig. 4 is another schematic flow chart of a manufacturing method of a narrow-bezel flexible OLED touch display module.
Fig. 5 is a schematic structural diagram of a narrow-bezel flexible touch sensing module.
Fig. 6 is a schematic structural diagram of a narrow-bezel flexible OLED touch display module.
Fig. 7 is a schematic structural diagram of another narrow-bezel flexible OLED touch display module.
Fig. 8 is an assembly view of a narrow bezel pass-through network and touch pattern.
1. Flexible apron, 2, the polymer layer of solidifying, 3, touch-control pattern, 4, narrow frame switch on the network, 5, touch-control sensing module, 6, OLED display screen, 7, OCA adhesive layer.
Detailed Description
The following examples are further illustrative of the present invention and are not intended to be limiting thereof.
Example 1
A method for manufacturing a narrow-bezel flexible touch sensor module, as shown in fig. 1, includes: s1, preparing a transparent touch pattern on a rigid substrate; s2, printing, sensitizing and developing on the rigid substrate with the transparent touch pattern formed thereon to form a narrow-frame conduction network; and S3, transferring the narrow frame conducting network and the touch pattern to the flexible cover plate to obtain the touch sensing module.
The preparation of the conducting network is realized by the process of photosensitive curing, developing and etching of photosensitive conductive slurry, so that the bus width of the conducting network is greatly reduced; the conductive network and the touch pattern are transferred to the flexible cover plate without being attached by adhesive glue such as OCA (optical clear adhesive) and the like; the reduction of the frame width of the whole module is realized by reducing the bus width of the conductive network; the module is transferred to the flexible cover plate through a transfer printing process, so that the lightness, thinness and flexibility of the module can be obviously improved.
Example 2
A method for manufacturing a narrow-bezel flexible OLED touch display module, as shown in fig. 2, includes: s1, preparing a transparent touch pattern on a rigid substrate; s2, printing, sensitizing and developing on the rigid substrate with the transparent touch pattern formed thereon to form a narrow-frame conduction network; and S3, transferring the narrow frame conducting network and the touch pattern to the flexible cover plate to obtain the touch sensing module.
The method for preparing the transparent touch pattern on the rigid substrate comprises the following steps: s11, performing hydrophilic treatment on the rigid substrate to improve the hydrophilicity of the surface of the rigid substrate; s12, coating a nano conductive dispersion liquid on the rigid substrate subjected to hydrophilic treatment, and heating to remove a solvent in the dispersion liquid to form a transparent conductive network; s13, etching the transparent conductive network to form a touch pattern.
The method for printing, sensitizing and developing on the rigid substrate with the transparent touch pattern comprises the following steps: s21, printing photosensitive conductive paste on the touch pattern; and S22, carrying out exposure, development and heat treatment on the conductive paste to form a narrow-frame conduction network.
The method for transferring the narrow-frame conduction network and the touch pattern to the flexible cover plate is to transfer the narrow-frame conduction network and the touch pattern to the flexible cover plate together through a photocuring high polymer material, and specifically comprises the following steps: s31, coating a photocuring high polymer material on the narrow frame conducting network and the touch pattern, heating, removing a solvent, and attaching a flexible cover plate; s32, carrying out photocuring on the photocuring polymer through the flexible cover plate, and forming a polymer curing layer among the narrow-frame conduction network, the touch pattern and the flexible cover plate; and S33, separating the touch pattern, the narrow frame conducting network, the polymer curing layer and the flexible cover plate from the rigid substrate to obtain the touch sensing module. The nano conductive dispersion liquid contains nano conductive materials, and the nano conductive materials comprise carbon nano tubes, graphene, silver nano wires, copper nano wires and metal networks; and in the process of coating the hydrophilic-treated rigid substrate with the nano conductive dispersion liquid, heating to 130-150 ℃ to remove the solvent in the dispersion liquid, thereby forming a transparent conductive network. The conductive material in the conductive paste is silver paste, a carbon nano tube, graphene, a silver nanowire, a copper nanowire or a metal network. The thickness of the photocuring high polymer material coated on the narrow-frame conducting network is 5-50 microns, and the solid content of the photocuring high polymer material is 100%. The flexible cover plate is processed by one or more of knife coating resistance treatment, pattern silk-screen printing treatment, surface hardening treatment and water-oxygen barrier treatment. The surface area of the conductive paste printed on the touch pattern is not larger than that of the touch pattern. The narrow frame conduction network is a hollow frame body, and the area of the touch pattern which is not covered by the narrow frame conduction network and the side, far away from the touch pattern, of the narrow frame conduction network are coated with a light-cured high polymer material.
The preparation of the conducting network is realized by the process of photosensitive curing, developing and etching of photosensitive conductive slurry, so that the bus width of the conducting network is greatly reduced; the conductive network and the touch pattern are transferred to the flexible cover plate without being attached by adhesive glue such as OCA (optical clear adhesive) and the like; the reduction of the frame width of the whole module is realized by reducing the bus width of the conductive network; the module is transferred to the flexible cover plate through a transfer printing process, so that the lightness, thinness and flexibility of the module can be obviously improved. The touch pattern is formed by etching a transparent conductive network formed on the substrate by the nano conductive dispersion liquid, and has excellent conductivity. The narrow frame conduction network is formed by solidifying the conductive slurry on the touch pattern, so that the bus width of the conductive network is greatly reduced, and the critical effect on the frame width of the whole module is achieved. The conduction network and the touch pattern are transferred onto the flexible cover plate, and the thin and flexible touch cover plate does not need to be attached with the aid of adhesive such as OCA (optical clear adhesive), and plays a critical role in light weight and flexibility. The nano conductive material is uniformly distributed in the transparent conductive network. The nano conductive material in the conductive paste can improve the conductive performance of the conductive network. The conductive paste is used for forming a narrow-frame conductive network, so that the conductive paste is basically coated on the periphery of the touch pattern. After photocuring macromolecular material's thickness is less than OCA adhesive layer, the thickness of reduction module that can show. The treated flexible cover plate can have more effects and produce more effects.
Example 3
A method for manufacturing a narrow-bezel flexible OLED touch display module, as shown in fig. 3, includes: s1, preparing a transparent touch pattern on a rigid substrate; s2, printing, sensitizing and developing on the rigid substrate with the transparent touch pattern formed thereon to form a narrow-frame conduction network; s3, transferring the narrow frame conducting network and the touch pattern to a flexible cover plate to obtain a touch sensing module; s4, attaching the touch sensing module to the OCA adhesive layer to obtain a touch screen sensor assembly; and S5, attaching the OCA adhesive layer of the touch screen sensor assembly to the OLED display screen to obtain the narrow-frame flexible OLED touch display module.
Example 4
A method for manufacturing a narrow-bezel flexible OLED touch display module, as shown in fig. 4, includes: s1, preparing a transparent touch pattern on a rigid substrate; s2, printing, sensitizing and developing on the rigid substrate with the transparent touch pattern formed thereon to form a narrow-frame conduction network; s3, transferring the narrow frame conducting network and the touch pattern to a flexible cover plate to obtain a touch sensing module; s4, attaching the touch sensing module to the OCA adhesive layer to obtain a touch screen sensor assembly; and S5, attaching the OCA adhesive layer of the touch screen sensor assembly to the OLED display screen to obtain the narrow-frame flexible OLED touch display module.
The method for preparing the transparent touch pattern on the rigid substrate comprises the following steps: s11, performing hydrophilic treatment on the rigid substrate to improve the hydrophilicity of the surface of the rigid substrate; s12, coating a nano conductive dispersion liquid on the rigid substrate subjected to hydrophilic treatment, and heating to remove a solvent in the dispersion liquid to form a transparent conductive network; s13, etching the transparent conductive network to form a touch pattern. The method for printing, sensitizing and developing on the rigid substrate with the transparent touch pattern comprises the following steps: s21, printing photosensitive conductive paste on the touch pattern; and S22, carrying out exposure, development and heat treatment on the conductive paste to form a narrow-frame conduction network.
The method for transferring the narrow-frame conduction network and the touch pattern to the flexible cover plate is to transfer the narrow-frame conduction network and the touch pattern to the flexible cover plate together through a photocuring high polymer material, and specifically comprises the following steps: s31, coating a photocuring high polymer material on the narrow frame conducting network and the touch pattern, heating, removing a solvent, and attaching a flexible cover plate; s32, carrying out photocuring on the photocuring polymer through the flexible cover plate, and forming a polymer curing layer among the narrow-frame conduction network, the touch pattern and the flexible cover plate; and S33, separating the touch pattern, the narrow frame conducting network, the polymer curing layer and the flexible cover plate from the rigid substrate to obtain the touch sensing module. The nano conductive dispersion liquid contains nano conductive materials, and the nano conductive materials comprise carbon nano tubes, graphene, silver nano wires, copper nano wires and metal networks; and in the process of coating the hydrophilic-treated rigid substrate with the nano conductive dispersion liquid, heating to 130-150 ℃ to remove the solvent in the dispersion liquid, thereby forming a transparent conductive network. The conductive material in the conductive paste is silver paste, a carbon nano tube, graphene, a silver nanowire, a copper nanowire or a metal network. The thickness of the photocuring high polymer material coated on the narrow-frame conducting network is 5-50 microns, and the solid content of the photocuring high polymer material is 100%. The flexible cover plate is processed by one or more of knife coating resistance treatment, pattern silk-screen printing treatment, surface hardening treatment and water-oxygen barrier treatment. The surface area of the conductive paste printed on the touch pattern is not larger than that of the touch pattern. The narrow frame conduction network is a hollow frame body, and the area of the touch pattern which is not covered by the narrow frame conduction network and the side, far away from the touch pattern, of the narrow frame conduction network are coated with a light-cured high polymer material.
Example 5
The utility model provides a flexible OLED touch-control display module assembly of narrow frame, as shown in fig. 5, includes touch-control sensing module 5, OLED display screen 6, touch-control sensing module 5 is connected through OCA gluing layer 7 with OLED display screen 6. The touch sensing module comprises a flexible cover plate 1, a polymer curing layer 2, a touch pattern 3 and a narrow frame conduction network 4, wherein the touch pattern 3 is connected with the narrow frame conduction network 4, the narrow frame conduction network 4 is connected with the polymer curing layer 2, the polymer curing layer 2 is connected with the flexible cover plate 1, and the flexible cover plate 1 is connected with the polymer curing layer 2. The thickness of the polymer cured layer 2 is 5 to 50 μm. The surface area of the narrow-frame conducting network 4 is not larger than that of the touch pattern 3. The narrow-frame conducting network 4 is a hollow frame. One side of the narrow-frame conducting network 4, which is far away from the touch pattern 3, is connected with the polymer curing layer 2, and the part of the touch pattern 3, which is not covered by the narrow-frame conducting network, is connected with the polymer curing layer.
The preparation of the conducting network is realized by the process of photosensitive curing, developing and etching of photosensitive conductive slurry, so that the bus width of the conducting network is greatly reduced; the conductive network and the touch pattern are transferred onto the flexible cover plate, and adhesion of adhesive glue such as OCA (optical clear adhesive) is not needed.
The reduction of the frame width of the whole module is realized by reducing the bus width of the conductive network; the module is transferred to the flexible cover plate through a transfer printing process, so that the lightness, thinness and flexibility of the module can be obviously improved.
Example 6
The utility model provides a flexible OLED touch-control display module assembly of narrow frame, as shown in fig. 3~5, includes touch-control sensing module 5, OLED display screen 6, touch-control sensing module 5 is connected through OCA gluing layer 7 with OLED display screen 6. The touch sensing module comprises a flexible cover plate 1, a polymer curing layer 2, a touch pattern 3 and a narrow frame conduction network 4, wherein the touch pattern 3 is connected with the narrow frame conduction network 4, the narrow frame conduction network 4 is connected with the polymer curing layer 2, the polymer curing layer 2 is connected with the flexible cover plate 1, and the flexible cover plate 1 is connected with the polymer curing layer 2. The thickness of the polymer cured layer 2 is 5 to 50 μm. The surface area of the narrow-frame conducting network 4 is not larger than that of the touch pattern 3. The narrow-frame conducting network 4 is a hollow frame. One side of the narrow-frame conducting network 4, which is far away from the touch pattern 3, is connected with the polymer curing layer 2, and the part of the touch pattern 3, which is not covered by the narrow-frame conducting network, is connected with the polymer curing layer.
The reduction of the frame width of the whole module is realized by reducing the bus width of the conductive network; the module is transferred to the flexible cover plate through a transfer printing process, so that the lightness, thinness and flexibility of the module can be obviously improved. The thickness of the cured polymer layer is significantly lower than that of the common OCA adhesive layer.
The above detailed description is specific to possible embodiments of the present invention, and the above embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the scope of the present invention should be included in the present claims.
Claims (10)
1. A manufacturing method of a narrow-frame flexible touch sensing module is characterized by comprising the following steps: s1, preparing a transparent touch pattern on a rigid substrate; s2, printing, sensitizing and developing on the rigid substrate with the transparent touch pattern formed thereon to form a narrow-frame conduction network; and S3, transferring the narrow frame conducting network and the touch pattern to the flexible cover plate to obtain the touch sensing module.
2. The method for manufacturing the narrow-bezel flexible touch sensor module according to claim 1, wherein the method for preparing the transparent touch pattern on the rigid substrate comprises: s11, performing hydrophilic treatment on the rigid substrate to improve the hydrophilicity of the surface of the rigid substrate; s12, coating a nano conductive dispersion liquid on the rigid substrate subjected to hydrophilic treatment, and heating to remove a solvent in the dispersion liquid to form a transparent conductive network; s13, etching the transparent conductive network to form a touch pattern.
3. The method for manufacturing the narrow-bezel flexible touch sensor module according to claim 1, wherein the method for printing, sensitizing and developing on the rigid substrate with the transparent touch pattern comprises: s21, printing photosensitive conductive paste on the touch pattern; and S22, carrying out exposure, development and heat treatment on the conductive paste to form a narrow-frame conduction network.
4. The manufacturing method of the narrow-border flexible touch sensing module according to claim 1, wherein the method for transferring the narrow-border conducting network and the touch pattern to the flexible cover plate is to transfer the narrow-border conducting network and the touch pattern to the flexible cover plate together through a photo-curing polymer material, and specifically comprises the following steps: s31, coating a photocuring high polymer material on the narrow frame conducting network and the touch pattern, heating, removing a solvent, and attaching a flexible cover plate; s32, carrying out photocuring on the photocuring polymer through the flexible cover plate, and forming a polymer curing layer among the narrow-frame conduction network, the touch pattern and the flexible cover plate; and S33, separating the touch pattern, the narrow frame conducting network, the polymer curing layer and the flexible cover plate from the rigid substrate to obtain the touch sensing module.
5. The method for manufacturing the narrow-bezel flexible touch sensor module according to claim 2, wherein the nano conductive dispersion liquid contains a nano conductive material, and the nano conductive material comprises one or a mixture of several of carbon nanotubes, graphene, silver nanowires, copper nanowires and metal networks; and in the process of coating the hydrophilic-treated rigid substrate with the nano conductive dispersion liquid, heating to 130-150 ℃ to remove the solvent in the dispersion liquid, thereby forming a transparent conductive network.
6. The method for manufacturing a narrow-bezel flexible touch sensor module according to claim 3, wherein the surface area of the conductive paste printed on the touch pattern is not greater than the area of the touch pattern.
7. The method for manufacturing the narrow-bezel flexible touch sensor module according to claim 5, wherein the narrow-bezel conducting network is a hollow frame, and a photo-curing polymer material is coated on an area of the touch pattern not covered by the narrow-bezel conducting network and on a side of the narrow-bezel conducting network away from the touch pattern.
8. The method for manufacturing the narrow-border flexible touch sensor module according to claim 6, wherein the thickness of the photo-curing polymer material coated on the narrow-border conducting network is 5-50 μm, and the solid content of the photo-curing polymer material is 100%.
9. The method for manufacturing the narrow-bezel flexible touch sensor module according to claim 6, wherein the conductive material in the conductive paste is one or a mixture of silver paste, carbon nanotubes, graphene, silver nanowires, copper nanowires, or a metal network; the flexible cover plate is processed by one or more of knife coating resistance treatment, pattern silk-screen printing treatment, surface hardening treatment and water-oxygen barrier treatment.
10. A manufacturing method of a narrow-frame flexible OLED touch display module is characterized in that the touch sensing module manufactured by the manufacturing method of any one of claims 1-9 is applied to the manufacturing method of the OLED touch display module, and specifically comprises the following steps: s4, attaching the touch sensing module to an OCA (optical clear adhesive) layer to obtain a touch screen sensor assembly; and S5, attaching the OCA adhesive layer of the touch screen sensor assembly to an OLED display screen to obtain the narrow-frame flexible OLED touch display module.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113219737A (en) * | 2021-04-20 | 2021-08-06 | 绵阳惠科光电科技有限公司 | Display panel and display device |
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| CN113219737B (en) * | 2021-04-20 | 2022-06-07 | 绵阳惠科光电科技有限公司 | Display panel and display device |
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