CN106095176B - Copper-plated nano silver wire touch screen and manufacturing method thereof - Google Patents
Copper-plated nano silver wire touch screen and manufacturing method thereof Download PDFInfo
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- CN106095176B CN106095176B CN201610408255.0A CN201610408255A CN106095176B CN 106095176 B CN106095176 B CN 106095176B CN 201610408255 A CN201610408255 A CN 201610408255A CN 106095176 B CN106095176 B CN 106095176B
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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
-
- 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
-
- 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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- General Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a copper-plated nano silver wire touch screen which comprises a cover plate, wherein the cover plate is made of hard materials or flexible materials, one side of the cover plate is sequentially provided with an optical transparent adhesive, a touch sensing element, a non-reciprocal conductive adhesive and a flexible circuit board in a laminated structure, the cover plate and the touch sensing element are mutually bonded through the optical transparent adhesive, and the flexible circuit board is connected with the touch sensing element through the non-reciprocal conductive adhesive; the preparation method comprises the following steps: a yellow light process, which is to carry out patterning operation on the conductive film of the copper-plated nano silver wire; hollowing out the optical transparent adhesive according to design; binding a flexible circuit board on the touch sensing element in the step 1 by using anisotropic conductive adhesive; the cover plate and the touch sensing element are mutually attached through the optical transparent adhesive, and the product is finished. The invention can simplify the manufacturing steps, improve the production efficiency and the product yield, and can be widely applied to various touch screens and manufacturing methods thereof.
Description
Technical Field
The invention belongs to the technical field of electronics, particularly relates to a touch screen, and particularly relates to a copper-plated nano silver wire touch screen and a manufacturing method thereof.
Background
The touch screen is used as a human-computer interface window, so that the convenience of human-computer communication can be greatly optimized, and the user experience can be better provided. Capacitive touch screens have been used in a number of applications in consumer electronics, such as: smart phones, tablet computers and the like. With the increasing popularity of these products and the more mature manufacturing processes, a simpler processing process and a lower cost processing method become the hard requirements of the module factory for the module factory. Curved touch products, flexible or foldable touch products will become the development direction of the next generation technology of touch screens, and these will become the mainstream demand as the user experience requirements increase.
The mainstream transparent conductive material of the current capacitive touch screen is ITO, and the preparation process is shown in fig. 2. Although the material has the characteristics of high light transmission, low color cast, proper conductive resistance and the like, and can basically meet the functional requirements of common touch screens, the ITO has a plurality of problems which are difficult to overcome. For example, (1) the product line is relatively strict in management and control, poor in fault tolerance and additionally increased in management and control cost due to high brittleness, fragility and easy cracking; moreover, due to the problem of poor mechanical property, ITO can not be manufactured into a bendable and foldable touch product; (2) the ITO membrane carries out high temperature treatment before the course of working, need recrystallization just can make its electric conductive property satisfy the operation requirement, and high temperature treatment increase cost on the one hand, and on the other hand also can require the substrate that bears the weight of ITO to possess high temperature resistance requirement, and this also can increase cost to a certain extent, and high temperature treatment can make the substrate produce deformation moreover, also can increase certain difficulty to subsequent processing and design.
In view of the above-mentioned defects of the prior art, finding a suitable alternative material for ITO and a more cost-effective processing method is a problem that needs to be solved urgently.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to realize the functions of flexible and foldable capacitive touch screens by using the copper-plated nano silver wire touch screen and the preparation method thereof, and in the aspect of processing, due to the characteristics of the copper-plated nano silver wire conductive film, the processing flow without high-temperature processing is realized, so that the processing cost is greatly saved.
In order to achieve the technical purpose, the technical scheme of the invention is as follows: a copper-plated nano silver wire touch screen comprises a cover plate, wherein the cover plate is made of hard materials such as glass, sapphire and PMMA (polymethyl methacrylate) or flexible materials such as PET (polyethylene terephthalate) and toughened flexible films, the cover plate is made of transparent base materials, the surface of the PET is provided with an HC (hydrocarbon) layer, one side of the cover plate is sequentially provided with an optical transparent adhesive, a touch sensing element, a non-directional conductive adhesive and a flexible circuit board in a laminated structure, the cover plate and the touch sensing element are mutually bonded through the optical transparent adhesive, various electronic devices are integrated on the flexible circuit board, the flexible circuit board is connected with the touch sensing element through the non-directional conductive adhesive and is bound on copper wiring pins on the touch sensing element, the two components are combined to realize a touch positioning function, and the touch sensing element is processed by using a copper-plated nano silver wire conductive film and is of a; the touch sensing element is a copper-plated nano silver wire conductive film obtained by processing a yellow light process; the copper conducting layer of the copper-plated nano silver wire conducting film can be copper or copper alloy.
The above-mentioned flexible circuit board has integrated thereon various electronic devices such as: IC, capacitor, resistor, diode, etc.
A manufacturing method of a copper-plated nano silver wire touch screen comprises the following preparation steps:
A. the copper-plated nano silver wire conductive film is used, and the copper conductive layer of the copper-plated nano silver wire conductive film can be copper or copper alloy;
B. manufacturing a touch control pattern on the conductive film plated with the copper nano silver wires by a yellow light manufacturing process to manufacture the touch control sensing element of claim 1;
C. hollowing out the flexible circuit board on the optical transparent adhesive according to the design, and binding and positioning the IR hole and the front camera hole;
D. attaching the hollowed optical transparent adhesive to the touch sensing element;
E. connecting the flexible circuit board with a Pin Pin of the touch sensing element by using anisotropic conductive adhesive;
F. and (6) attaching the cover plate.
The grain diameter of the gold ball in the anisotropic conductive adhesive is less than 5 um.
The invention is equivalent to using the nano silver wire layer as a transparent conductive layer, and the copper conductive layer is an ultra-low sheet resistance routing layer, the nano silver wire has the advantages of low sheet resistance and winding resistance relative to the main ITO material, and the copper plating on the nano silver wire layer can simplify the processing flow when the touch panel is manufactured subsequently, thereby greatly saving the processing cost; but also can solve the problems of unstable electrical contact between the nano silver wire conductive film and silver paste, poor adhesion and the like; and the production link is greatly simplified from the aspect of the manufacturing process, and the automatic production is easier to realize.
The invention discloses a novel touch screen and a manufacturing method thereof. The invention can greatly simplify the manufacturing steps, improve the production efficiency and the product yield, and the manufactured touch screen can realize the bending and bending performance which can not be realized by the mainstream ITO product, thereby having important significance. Based on this, the invention is widely applied to various touch screens and manufacturing methods thereof.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a flow chart of ITO touch screen preparation in the prior art;
FIG. 3 is a flow chart of the preparation of the copper-plated nano silver wire touch screen of the invention.
Detailed Description
The invention is further described below with reference to the figures and examples. It is to be understood that the specific experimental examples described herein are intended to be illustrative only and not limiting. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
Referring to fig. 1, fig. 1 is a schematic cross-sectional structure view of a copper-plated nano silver wire touch screen according to an embodiment of the present invention.
The copper-plated nano silver wire touch screen in the embodiment comprises a cover plate, an optical transparent adhesive, a touch sensing element and a flexible circuit board. The flexible electric grid plate is bound on the copper wiring Pin on the touch sensing element, and the optical transparent adhesive is used as a connecting agent to enable the cover plate to be connected with the touch sensing element. In this embodiment, the apron is transparent substrate, and there is the PET on HC layer on preferred surface, and thickness is 0.2mm, and the printing ink of its frame is black printing ink, optics transparent adhesive tape thickness be 50um, touch-control sensing element use copper-plating nanometer silver line conductive film to process and form, be the sola film structure, thickness is 50 um. The thickness of whole touch-sensitive screen is 0.3mm, and based on the flexible characteristic of nanometer silver line, other part accessories are all flexible in addition, have really realized the design of ultra-thin and flexible touch-sensitive screen.
As shown in fig. 3, fig. 3 is a flowchart of a method for manufacturing a copper-plated silver nanowire touch screen according to the embodiment of the present invention.
A preparation method of a copper-plated nano silver wire touch screen specifically comprises the following steps:
And 2, hollowing out the optical transparent adhesive according to design, and then attaching the optical transparent adhesive to the touch sensing element in the step 1.
And 3, binding the flexible circuit board on the Pin pins of the copper wires on the touch sensing element in the step 1 by using anisotropic conductive adhesive.
And 4, enabling the cover plate and the touch sensing element to be mutually attached through the optical transparent adhesive in the step 2, and finishing the product.
It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and such improvements and modifications are also considered to be within the scope of the present invention.
Claims (3)
1. The utility model provides a copper facing nanometer silver line touch-sensitive screen, includes the apron, the apron be glass, sapphire, PMMA hard material, perhaps be PET, the flexible material of tempering flexible membrane, the apron is transparent substrate, and the surface has the PET on HC layer, its characterized in that: an optical transparent adhesive, a touch sensing element, a anisotropic conductive adhesive and a flexible circuit board are sequentially arranged on one side of the cover plate in a laminated structure, the cover plate and the touch sensing element are bonded with each other through the optical transparent adhesive, various electronic devices are integrated on the flexible circuit board, the flexible circuit board is connected with the touch sensing element through the anisotropic conductive adhesive and is bound on a copper wiring Pin on the touch sensing element, the touch sensing element and the touch sensing element are combined to realize a touch positioning function, and the touch sensing element is processed by using a copper-plated nano silver wire conductive film and is of a single film structure; the touch sensing element is a copper-plated nano silver wire conductive film obtained by processing a yellow light process; the copper conducting layer of the copper-plated nano silver wire conducting film can be copper or copper alloy.
2. A manufacturing method of a copper-plated nano silver wire touch screen comprises the following preparation steps:
A. the copper-plated nano silver wire conductive film is used, and the copper conductive layer of the copper-plated nano silver wire conductive film can be copper or copper alloy;
B. manufacturing a touch control pattern on the conductive film plated with the copper nano silver wires by a yellow light manufacturing process to manufacture the touch control sensing element of claim 1;
C. hollowing out the flexible circuit board on the optical transparent adhesive according to the design, and binding and positioning the IR hole and the front camera hole;
D. attaching the hollowed optical transparent adhesive to the touch sensing element;
E. connecting the flexible circuit board with a Pin Pin of the touch sensing element by using anisotropic conductive adhesive;
F. and (6) attaching the cover plate.
3. The method for manufacturing the copper-plated nano silver wire touch screen according to claim 2, wherein the method comprises the following steps: the grain size of the gold ball in the anisotropic conductive adhesive is less than 5 um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610408255.0A CN106095176B (en) | 2016-06-08 | 2016-06-08 | Copper-plated nano silver wire touch screen and manufacturing method thereof |
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| CN201610408255.0A CN106095176B (en) | 2016-06-08 | 2016-06-08 | Copper-plated nano silver wire touch screen and manufacturing method thereof |
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| CN106095176A CN106095176A (en) | 2016-11-09 |
| CN106095176B true CN106095176B (en) | 2020-04-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106775152A (en) * | 2016-12-12 | 2017-05-31 | 长沙市宇顺显示技术有限公司 | A kind of capacitive touch screen and preparation method thereof |
| CN107450787B (en) * | 2017-09-04 | 2023-08-04 | 深圳市千分一智能技术有限公司 | Active capacitive touch module and intelligent hand-painted plate |
| CN109725748A (en) * | 2017-10-27 | 2019-05-07 | 南昌欧菲光科技有限公司 | Touch screen and electronic equipment |
| CN109032401B (en) * | 2018-06-30 | 2021-11-12 | 广州国显科技有限公司 | Conductive laminated structure, preparation method of conductive laminated structure and touch panel |
| CN108845707B (en) * | 2018-06-30 | 2022-03-11 | 广州国显科技有限公司 | Touch panel and manufacturing method thereof |
| CN108920000A (en) * | 2018-06-30 | 2018-11-30 | 昆山国显光电有限公司 | Display panel and preparation method thereof |
| CN108897461B (en) * | 2018-06-30 | 2022-04-22 | 广州国显科技有限公司 | Thin film laminated structure, manufacturing method thereof and touch screen |
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| CN106095176A (en) | 2016-11-09 |
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Effective date of registration: 20210527 Address after: 528000 unit 101, 1st floor, building 3, Tianfu science and technology center, 12 Xianan Road, Guicheng Street, Nanhai District, Foshan City, Guangdong Province Patentee after: Foshan Ruina New Material Technology Co.,Ltd. Address before: 528000 Nangang Street (factory building), West District, Pingzhou Shawei Industrial Zone, Nanhai District, Foshan City, Guangdong Province Patentee before: GUANGDONG NANHAI ETETB TECHNOLOGY Co.,Ltd. |