CN111176498A - Single-layer glass metal grid capacitive touch cover plate and preparation method thereof - Google Patents
Single-layer glass metal grid capacitive touch cover plate and preparation method thereof Download PDFInfo
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- CN111176498A CN111176498A CN202010246820.4A CN202010246820A CN111176498A CN 111176498 A CN111176498 A CN 111176498A CN 202010246820 A CN202010246820 A CN 202010246820A CN 111176498 A CN111176498 A CN 111176498A
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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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- 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
- G06F2203/04112—Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
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Abstract
The invention discloses a single-layer glass metal grid capacitive touch cover plate and a preparation method thereof, wherein the single-layer glass metal grid capacitive touch cover plate comprises transparent glass, one surface of the transparent glass is provided with a curing layer, metal grid lines which are distributed in a cross contact manner and are tightly attached to the surface of the transparent glass are embedded in the curing layer, the edge of the transparent glass is provided with a silk-screen printing surface formed by silk screen printing, the metal grid lines comprise transverse metal grid lines and longitudinal metal grid lines, the metal grid lines led out from a non-silk-screen printing area are fixedly arranged on the silk-screen printing surface by adopting a wiring structure, and the tail ends of the metal grid; in summary, the invention has the advantages of simple process, low manufacturing cost, high sensitivity and good stability.
Description
Technical Field
The invention relates to the technical field of photoelectricity, in particular to a single-layer glass metal grid capacitive touch cover plate and a preparation method thereof.
Background
Capacitive touch screens on the market today have three main modes: 1. a sensor glass and toughened glass cover plate structure; 2. the surface toughened glass and the film material structure; 3. the surface toughened glass and the PC material structure; the three structures can be seen, and at least two materials are adhered together up and down to form the touch cover plate; the preparation process is complex, the cost is high, the sensitivity is relatively low, and the stability is poor; particularly, when the film is adopted for bonding, the defects of easy disconnection, damage, stain generation, film bonding foaming and the like exist, and the manufacturing cost is increased; therefore, in order to solve the above problems, a single-layer glass metal grid capacitive touch cover and a method for manufacturing the same are needed.
Disclosure of Invention
The invention mainly aims to provide a single-layer glass metal grid capacitive touch cover plate with simple process, low manufacturing cost, high sensitivity and good stability and a preparation method thereof.
In order to achieve the purpose, the invention provides a single-layer glass metal grid capacitive touch cover plate which comprises transparent glass, wherein a curing layer is arranged on one surface of the transparent glass, metal grid lines which are distributed in a cross contact manner and are tightly attached to the surface of the transparent glass are embedded in the curing layer, a silk-screen printing surface formed by silk screen printing is arranged at the edge of the transparent glass, the metal grid lines comprise transverse metal grid lines and longitudinal metal grid lines, the metal grid lines led out from a non-silk-screen printing area are fixedly arranged on the silk-screen printing surface by adopting a wiring structure, and the tail ends of the metal grid lines are connected with welding points of an FPC flexible flat cable.
The transparent glass is 0.1-10mm transparent toughened glass.
The curing layer is made of a curing agent, transparent paint, resin or UV gloss oil.
The metal grid lines are insulated enameled wires, and conductors of the insulated enameled wires are made of at least one of gold, silver, copper, aluminum or zinc.
The diameter of the metal grid lines is not more than 0.05 mm.
The metal grid lines are arranged in a wave-shaped crossed mode or a quadrilateral mode.
The wiring structure is a Z-shaped ladder-shaped wiring structure, namely, metal grid lines led out from the edge of a non-silk-screen printing area are arranged on a silk-screen printing surface in parallel, the tail ends of the metal grid lines are connected with welding points of an FPC (flexible printed circuit) flexible flat cable, the led-out metal grid lines which are farthest away from the FPC flexible flat cable are connected with the welding points, which are closest to the led-out metal grid lines, on the FPC flexible flat cable, and the unconnected led-out metal grid lines and the unconnected FPC flexible flat cable are sequentially connected from outside to inside in this way.
A preparation method of a single-layer glass metal grid capacitive touch cover plate comprises the following steps:
step A: selecting transparent glass according to the image display size, forming a silk-screen surface by silk-screen printing the edge of the transparent glass by special ink for glass silk-screen printing, and drying the silk-screen surface after silk-screen printing;
and B: fixing the FPC on a screen printing surface of transparent glass in a thousand-level dust-free chamber, shielding a welding point of the FPC, and then uniformly spraying or coating a curing agent, transparent paint, resin or UV gloss oil on the surface of the transparent glass containing the screen printing surface to form a curing layer;
and C: removing a shielding object for shielding the welding point of the FPC flexible flat cable, and coating solder paste on the welding point of the FPC flexible flat cable;
step D: before the solidified layer is not solidified, in a thousand-level dust-free room, integrally and continuously and crossly paving insulated enameled wires on the solidified layer by using a numerical control wire paving machine, and collecting the insulated enameled wires to welding points corresponding to the FPC flexible flat cable;
step E: in a thousand-level dust-free room, special ultraviolet irradiation equipment is adopted for irradiation, or drying equipment is adopted for drying, or natural airing is adopted, so that a pre-sprayed curing layer is solidified and hardened, and the insulated enameled wire is firmly combined on the surface of the transparent glass;
step F: after all processed materials are completely solidified, entering a trimming process link, and cutting off the connecting parts of the transverse bottom edge, the longitudinal bottom edge and the insulated enameled wires at the edge of the FPC flexible flat cable by using cutting equipment;
step G: and welding the insulated enameled wires collected to the welding points at the FPC flexible flat cable to the welding points of the FPC flexible flat cable by using a laser soldering machine or an ultrasonic soldering machine, and finishing the manufacturing of the capacitive touch cover plate.
And in the step B, fixing the FPC flexible flat cable on the transparent glass screen printing surface by using an adhesive or a double-sided adhesive tape.
The invention has the beneficial effects that:
1. the invention only comprises a layer of transparent glass, a curing layer, metal grid lines and FPC flexible flat cables, and the metal grid lines adopt insulated enameled wires, so that the structure is simple, the manufacturing cost is low, the wires are not easy to break during preparation, and the stability is good;
2. according to the invention, the metal grid lines are directly attached to the surface of the transparent glass, and other additional layers are not needed, so that the capacitive coupling distance is closer, and the sensitivity is higher;
3. the routing structure has compact routing and small occupied space, so that the routing length is shortened as much as possible, the routing length of the metal grid lines can be effectively saved, and the manufacturing cost is saved;
4. when the metal grid touch film is prepared, the metal grid lines are directly laid on the transparent glass, the defects that the metal grid touch film is easy to break, damage, stain and blister when the metal grid touch film is adhered in the prior art are overcome, time and labor are saved, the preparation process is simple, and the preparation cost is reduced; in general, the invention has the advantages of simple process, low manufacturing cost, high sensitivity and good stability.
Drawings
Fig. 1 and 2 are schematic structural diagrams of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 5 is a schematic structural diagram of embodiment 4 of the present invention.
Fig. 6 is a schematic view of the structure of the joint of the uncut insulated enamel wire according to the present invention.
Fig. 7 is an enlarged structural view of a joint of insulated coated wires at the edge of a solidified layer according to the present invention.
Fig. 8 is an enlarged structure diagram of the connection of the insulated enameled wires at the edge of the FPC flexible flat cable according to the present invention.
In the figure: 1. transparent glass 2, cured layer 3, metal grid line 4, silk screen printing face 5, walk line structure 6, FPC soft arranging wire 7, cutting area.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Example 1:
as shown in fig. 1 and 2, the single-layer glass metal grid capacitive touch cover plate comprises transparent glass 1, wherein a cured layer 2 is arranged on one surface of the transparent glass 1, the cured layer 2 is arranged on a non-silk-screen printing surface and also on a silk-screen printing surface 4, and the cured layer 2 on the silk-screen printing surface 4 is mainly used for fixing metal grid lines 3 led out from a non-silk-screen printing area which is arranged by adopting a wiring structure 5 and the tail end of which is connected with a welding point of an FPC flexible flat cable 6; inlay in the solidified layer 2 and have cross contact distribution and hug closely the metal grid line 3 on transparent glass 1 surface, transparent glass 1 edge is equipped with the silk screen printing face 4 that the silk screen printing formed.
The metal grid lines 3 comprise transverse metal grid lines and longitudinal metal grid lines, insulated enameled wires are laid according to the transverse and longitudinal uniform proportion of the glass surface, the transverse and longitudinal are preferably 1:2, and the ratio can float from 0 to 50% in a positive and negative mode according to the glass size and the actual use condition; when the transverse direction and the longitudinal direction are reversed, the transverse direction and the longitudinal direction are preferably 2:1, and the ratio can be changed by 0-50 percent in a positive and negative mode according to the size of the glass and the actual use condition; the metal grid lines 3 led out from the non-silk-screen area are fixedly arranged on the silk-screen surface 4 by adopting the wiring structure 5, and the tail ends of the metal grid lines are connected with the welding points of the FPC flexible flat cables 6, namely, the wiring of the metal grid lines 3 led out from the edge of the non-silk-screen area adopts the structural form of the wiring structure 5, the wiring structure 5 is compact in wiring, the occupied space is small, the wiring length of the metal grid lines can be effectively saved, the manufacturing cost is saved, the FPC flexible flat cables 6 are fixed on the silk-screen surface 4 by adopting double faced adhesive tapes and can be fixed at required positions according to actual needs.
The transparent glass 1 is made of 0.1-10mm transparent toughened glass.
The curing layer 2 is made of a curing agent, transparent paint, resin or UV gloss oil, the thickness of the curing layer 2 is not less than 0.001mm, actual thickness selection is carried out according to the diameter of the metal grid lines 3, the insulating enameled wire 3 can be completely immersed in the curing layer 2, and the insulating enameled wire 3 is also guaranteed to be cured firmly and reliably.
The metal grid line 3 adopts the insulated enameled wire, the conductor of insulated enameled wire adopts one in gold, silver, copper, aluminium or zinc at least, the diameter of metal grid line 3 is not more than 0.05mm, and the metal grid line 3 macroscopic view on this touch cover plate is visible this moment lowly, under the condition that effectively guarantees to have better visual effect, saves manufacturing cost.
As shown in fig. 3-6, the routing structure 5 is a Z-shaped stepped routing structure, that is, the metal grid lines 3 led out from the edge of the non-silk-screen area are arranged in parallel on the silk-screen surface 4, and the tail ends of the metal grid lines are connected with the welding points of the FPC flexible flat cables, the led-out metal grid lines farthest away from the FPC flexible flat cables 6 are connected with the welding points on the FPC flexible flat cables 6 closest to the led-out metal grid lines, and in this way, the led-out metal grid lines which are not connected are sequentially connected with the welding points of the FPC flexible flat cables 6 from outside to inside, and the routing structure 5 has compact routing and small space occupation, greatly saves the routing length of the metal grid lines 3, and saves the manufacturing cost.
Example 2: as shown in fig. 3, the difference from embodiment 1 is that: the metal grid lines 3 are arranged in a square shape.
Example 3: as shown in fig. 4, the difference from embodiment 1 is that: the metal grid lines 3 are arranged in a diamond shape.
Example 4: as shown in fig. 5, the arrangement of the transparent glass 1 and the fixing position of the FPC flexible flat cable 6 are different from those in embodiment 1.
The preparation method of the single-layer glass metal grid capacitive touch cover plate comprises the following steps:
step A: selecting transparent glass 1 according to the image display size, silk-screening the edge of the transparent glass 1 by using special ink for glass silk-screening to form a silk-screen surface 4, and drying the silk-screen surface after silk-screening;
and B: in a thousand-level dust-free room, an adhesive or a double-sided tape is used for fixing the FPC flexible flat cable 6 on the screen printing surface 4 of the transparent glass 1, the welding point of the FPC flexible flat cable 6 is shielded, a plastic film can be used for shielding the welding point, and then a curing agent, transparent paint, resin or UV gloss oil is uniformly sprayed or smeared on the surface of the transparent glass 1 containing the screen printing surface 4 to form a curing layer;
and C: removing a shielding object for shielding the welding point of the FPC flexible flat cable 6, and coating solder paste on the welding point of the FPC flexible flat cable 6;
step D: before the solidified layer 2 is not solidified, in a thousand-level dust-free room, a numerical control wire laying machine is used for continuously and crossly laying insulated enameled wires 3 on the solidified layer 2 by one integral wire, and the insulated enameled wires 3 are collected to welding points corresponding to the FPC flexible flat cable 6;
step E: in a thousand-level dust-free room, special ultraviolet irradiation equipment is adopted for irradiation, or drying equipment is adopted for drying, or natural airing is adopted, so that the pre-sprayed cured layer 2 is solidified and hardened, and the insulated enameled wire 3 is firmly combined on the surface of the transparent glass;
step F: after all processed materials are completely solidified, entering a trimming process link, cutting off the joint of the insulated enameled wires 3 in a cutting area 7 by using cutting equipment, wherein the cutting area 7 comprises a transverse bottom edge, a longitudinal bottom edge and the joint of the insulated enameled wires 3 at the edge of the FPC flexible flat cable 6;
step G: and welding the insulated enameled wires 3 converged to the welding points of the FPC flexible flat cables 6 by using a laser soldering machine or an ultrasonic soldering machine, and finishing the manufacturing of the capacitive touch cover plate.
According to the preparation process disclosed by the invention, film pasting is not needed, the insulated enameled wire is directly paved on the transparent glass, the defects that the existing metal grid touch film is easy to break, damage, stain and film pasting blistering are overcome, the time and the labor are saved, the labor intensity of workers is saved, the preparation process is simple, and the manufacturing cost is greatly reduced.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A single-layer glass metal grid capacitive touch cover plate is characterized in that: including transparent glass (1), be equipped with solidified layer (2) on the surface of transparent glass (1), inlay in solidified layer (2) and have cross contact distribution and hug closely metal grid line (3) on transparent glass (1) surface, transparent glass (1) edge is equipped with silk screen printing face (4) that the silk screen printing formed, metal grid line (3) are including horizontal metal grid line and vertical metal grid line, and metal grid line (3) of drawing out from non-silk screen printing district adopt to walk line structure (5) and set firmly on silk screen printing face (4) and the terminal welding point with FPC soft arranging wire (6) links to each other.
2. The single layer glass-metal grid capacitive touch cover sheet of claim 1, wherein: the transparent glass (1) is made of 0.1-10mm transparent toughened glass.
3. The single layer glass-metal grid capacitive touch cover sheet of claim 1, wherein: the curing layer (2) is made of a curing agent, transparent paint, resin or UV gloss oil.
4. The single layer glass-metal grid capacitive touch cover sheet of claim 1, wherein: the metal grid lines (3) are insulated enameled wires, and conductors of the insulated enameled wires are made of at least one of gold, silver, copper, aluminum or zinc.
5. The single layer glass-metal grid capacitive touch cover sheet of claim 1 or 4, wherein: the diameter of the metal grid lines (3) is not more than 0.05 mm.
6. The single layer glass-metal grid capacitive touch cover sheet of claim 5, wherein: the metal grid lines (3) are arranged in a wave-shaped crossed mode or a quadrilateral mode.
7. The single layer glass-metal grid capacitive touch cover sheet of claim 1, wherein: the wiring structure (5) is a Z-shaped ladder-shaped wiring structure, namely, the metal grid lines (3) led out from the edge of the non-silk-screen printing area are arranged on the silk screen printing surface (4) in parallel, the tail ends of the metal grid lines are connected with the welding points of the FPC flexible flat cable, the led-out metal grid lines farthest away from the FPC flexible flat cable (6) are connected with the welding points, closest to the led-out metal grid lines, on the FPC flexible flat cable (6), and the unconnected led-out metal grid lines are sequentially connected with the welding points of the FPC flexible flat cable from outside to inside in this way.
8. A preparation method of a single-layer glass metal grid capacitive touch cover plate is characterized by comprising the following steps: the method comprises the following steps:
step A: selecting transparent glass according to the image display size, forming a silk-screen surface by silk-screen printing the edge of the transparent glass by special ink for glass silk-screen printing, and drying the silk-screen surface after silk-screen printing;
and B: in a thousand-level dust-free room, fixing the FPC on a screen printing surface of transparent glass, shielding a welding point of the FPC, and then uniformly spraying or coating a curing agent, transparent paint, resin or UV gloss oil on the surface of the transparent glass containing the screen printing surface to form a curing layer;
and C: removing the shielding object wrapping the welding point of the FPC flexible flat cable, and coating solder paste on the welding point of the FPC flexible flat cable;
step D: before the solidified layer is not solidified, in a thousand-level dust-free room, integrally and continuously and crossly paving insulated enameled wires on the solidified layer by using a numerical control wire paving machine, and collecting the insulated enameled wires to welding points corresponding to the FPC flexible flat cable;
step E: in a thousand-level dust-free room, special ultraviolet irradiation equipment is adopted for irradiation, or drying equipment is adopted for drying, or natural airing is adopted, so that a pre-sprayed curing layer is solidified and hardened, and the insulated enameled wire is firmly combined on the surface of the transparent glass;
step F: after all processed materials are completely solidified, entering a trimming process link, and cutting off the connecting parts of the transverse bottom edge, the longitudinal bottom edge and the insulated enameled wires at the edge of the FPC flexible flat cable by using cutting equipment;
step G: and welding the insulated enameled wires collected to the welding points at the FPC flexible flat cable to the welding points of the FPC flexible flat cable by using a laser soldering machine or an ultrasonic soldering machine, and finishing the manufacturing of the capacitive touch cover plate.
9. The method for manufacturing a single-layer glass-metal grid capacitive touch cover plate according to claim 8, wherein the method comprises the following steps: and in the step B, fixing the FPC flexible flat cable on the transparent glass screen printing surface by using an adhesive or a double-sided adhesive tape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010246820.4A CN111176498A (en) | 2020-03-31 | 2020-03-31 | Single-layer glass metal grid capacitive touch cover plate and preparation method thereof |
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| CN202010246820.4A CN111176498A (en) | 2020-03-31 | 2020-03-31 | Single-layer glass metal grid capacitive touch cover plate and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114168006A (en) * | 2021-11-03 | 2022-03-11 | 深圳市佳明科电子有限公司 | Binding process of FPC (flexible printed circuit) of mobile phone touch screen |
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2020
- 2020-03-31 CN CN202010246820.4A patent/CN111176498A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114168006A (en) * | 2021-11-03 | 2022-03-11 | 深圳市佳明科电子有限公司 | Binding process of FPC (flexible printed circuit) of mobile phone touch screen |
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