CN110515485B - Method for preparing large-size touch screen functional sheet by using small screen printing plate - Google Patents
Method for preparing large-size touch screen functional sheet by using small screen printing plate Download PDFInfo
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- CN110515485B CN110515485B CN201910699028.1A CN201910699028A CN110515485B CN 110515485 B CN110515485 B CN 110515485B CN 201910699028 A CN201910699028 A CN 201910699028A CN 110515485 B CN110515485 B CN 110515485B
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- paste film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/12—Stencil printing; Silk-screen printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70691—Handling of masks or workpieces
- G03F7/70733—Handling masks and workpieces, e.g. exchange of workpiece or mask, transport of workpiece or mask
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
Abstract
The invention discloses a method for preparing a large-size touch screen functional sheet by adopting a small screen printing plate. Not only reduces the investment of earlier stage research and development and the waste of equipment caused by the suspension of projects, but also reduces the cost of die sinking and improves the precision of products. The invention integrates the pattern divided into two on one screen printing plate, thus reducing half the cost of the film and the screen printing plate; according to the invention, the silver paste film patterns are printed by adopting a mode of turning over one screen printing plate, the difference of the screen printing plates does not exist, and the printing deviation of the whole silver paste film patterns is smaller, so that the consistency of the touch screen functional sheet prepared by the method is higher compared with that of a touch screen functional sheet printed by splicing 2 screen printing plates.
Description
Technical Field
The invention relates to the technical field of touch control and the field of printing, in particular to a method for preparing a large-size touch screen functional sheet by using a small screen printing plate.
Background
The touch screen is widely applied to the fields of various electronic devices such as mobile phones, flat panel displays, vehicle navigation, industrial control, multimedia teaching and the like, and the core component of the touch screen is a touch screen functional sheet which is formed by a series of photoetching, printing and film coating processes.
A key process step in the manufacturing process of the conventional touch screen functional sheet is the printing of a silver paste film pattern on a conductive layer of an induction pattern; with the progress of technology, the larger the size of the touch screen is made, and many companies face that the equipment purchased before is not large enough, and the larger equipment needs to be purchased again when the touch screen of the first size is made; after a large device is purchased, research and development are started to manufacture a large touch screen, companies often develop the large touch screen, and the large touch screen cannot be popularized in the market or the large touch screen cannot be popularized in the market, so that the waste of the device is caused.
Of course, 2 small-size screens can be used for splicing and printing large-size full-page silver paste film patterns, but due to the fact that different screens are manufactured to have deviation, the tension of 2 screens cannot be guaranteed to be completely consistent, and therefore the deviation of the patterns of 2 screen splicing and printing is larger, and the requirements of products cannot be met.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at the problems existing in the research and development process of the current large-size functional sheet, the invention provides a method for preparing the large-size touch screen functional sheet by using a small screen printing plate, which utilizes the existing small-sized screen printing plate to print the full-page silver paste film pattern of the large-size functional sheet and improves the consistency of the printing of the silver paste film pattern.
In order to solve the technical problems, the invention provides the following technical scheme:
a method for preparing a large-size touch screen functional sheet by using a small screen printing plate comprises the following specific steps:
(1) forming a transparent induction pattern conducting layer on one side or two side surfaces of the base material;
(2) printing a silver paste film pattern on the induction pattern conducting layer to enable the silver paste film pattern to be in electrical contact with the conducting film layer below, wherein the silver paste film pattern is in contact connection with the induction pattern and the peripheral circuit through a lapping block;
(3) forming a sensing region pattern on the sensing pattern conductive layer by etching with a primary yellow light or laser process;
(4) cutting off the redundant silver paste film pattern on one side according to the product shape, and etching a ground wire on the residual silver paste film pattern on the cut side by adopting laser;
(5) coating optical cement on the base material printed with the silver paste circuit to enable the touch screen functional sheet to be integrally attached;
the printing method of the silver paste film pattern comprises the following steps:
(A) the full-page silver paste film pattern is divided into halves and then redesigned and integrated in the half-page silver paste film pattern, and a screen printing plate is prepared by the half-page silver paste film pattern;
(B) and (3) pushing the substrate, printing half of the silver paste film patterns on one side of the screen printing plate in the step (A) on the induction pattern conducting layer, stopping pushing the substrate after printing of the half of the silver paste film patterns is finished, horizontally rotating the screen printing plate for 180 degrees, then continuing pushing the substrate along the original direction, and printing the other half of the silver paste film patterns to finish printing of the whole silver paste film patterns.
Preferably, the full-page silver paste film pattern is arranged in a mirror image mode by taking a central shaft as a symmetry axis, and the central shaft is perpendicular to the substrate pushing direction.
Preferably, the full-page silver paste film pattern is centrosymmetric.
Preferably, the redundant silver paste film patterns are broken by laser or are completely removed by scanning by laser.
Preferably, the sensing pattern conductive layer is a nano silver wire, a metal mesh or an ITO material.
Preferably, the laser spot diameter adopted by the laser etching is 0.035 mm.
The invention has the following beneficial effects:
1. from the perspective of earlier stage research and development, the existing small-size equipment can be used for developing a large-size sample, after the stable and definite quantity of development is completed, the research and development experience before the stable and definite quantity of development is summarized is pointed to purchase equipment, the investment in the research and development stage of technology research and development is reduced, and the time for ordering and learning new equipment is saved; the invention not only reduces the investment of earlier research and development and the waste of equipment caused by the suspension of projects, but also reduces the cost of die sinking and improves the product precision.
2. The invention integrates the pattern divided into two on one screen printing plate, thus reducing half the cost of the film and the screen printing plate;
3. according to the invention, silver paste film patterns are printed by adopting a mode of turning and printing one screen printing plate, the difference of the screen printing plates does not exist, and the printing deviation of the full-page silver paste film patterns is smaller, so that the consistency of the touch screen functional sheet prepared by the method is higher compared with that of a touch screen functional sheet spliced and printed by 2 screen printing plates;
drawings
Fig. 1 is a schematic diagram of silver paste printing of a conventional touch screen.
FIG. 2 is a schematic diagram of a large-size full-page silver paste film pattern.
FIG. 3 is a schematic diagram of half-plate silver paste film pattern printing.
FIG. 4 is a schematic diagram of a pattern of an entire silver paste film printed according to the present invention.
FIG. 5 is a schematic diagram showing the removal of the excess portion of the full-page silver paste film pattern printed by the present invention.
Wherein, the A part is an excess silver paste block which needs to be cut off.
Detailed Description
The following detailed description of the present invention will be provided in conjunction with the accompanying drawings to assist those skilled in the art in a more complete, accurate and thorough understanding of the inventive concepts and solutions of the present invention.
Example 1: the 150-inch nano-silver touch screen functional sheet is prepared by the following method:
(1) forming a transparent nano silver wire induction pattern conducting layer on one side or two sides of the substrate;
(2) printing a silver paste film pattern on the induction pattern conducting layer to enable the silver paste film pattern to be in electrical contact with the conducting film layer below, wherein the silver paste film pattern is in contact connection with the induction pattern and the peripheral circuit through a lapping block;
(3) forming a sensing region pattern on the sensing pattern conductive layer by etching through a laser process; the laser spot diameter used for laser etching was 0.035 mm.
(4) Cutting off the redundant silver paste film pattern on one side according to the product shape, and etching a ground wire on the residual silver paste film pattern on the cut side by adopting laser; and the redundant silver paste film patterns are broken by laser or are completely removed by laser scanning.
(5) Coating optical cement on the base material printed with the silver paste circuit to enable the touch screen functional sheet to be integrally attached;
the printing method of the silver paste film pattern comprises the following steps:
(A) the full-page silver paste film pattern is divided into halves and then redesigned and integrated in the half-page silver paste film pattern, and a screen printing plate is prepared by the half-page silver paste film pattern; the full-page silver paste film pattern is approximately rectangular, is arranged in a mirror image mode by taking a short shaft central shaft as a symmetric shaft, and the central shaft is vertical to the substrate pushing direction.
(B) And (2) pushing the base material along the long axis direction of the whole silver paste film pattern, firstly printing half of the silver paste film pattern on one side of the screen printing plate in the step (A) on the induction pattern conducting layer, stopping pushing the base material after printing of half of the silver paste film pattern is finished, horizontally rotating the screen printing plate for 180 degrees, then continuing to push the base material along the original direction, and printing the other half of the silver paste film pattern to finish the printing of the whole silver paste film pattern.
Example 2: the 150-inch ITO touch screen functional sheet is prepared by the following method:
(1) forming a transparent ITO induction pattern conducting layer on one side or two sides of the substrate;
(2) printing a silver paste film pattern on the induction pattern conducting layer to enable the silver paste film pattern to be in electrical contact with the conducting film layer below, wherein the silver paste film pattern is in contact connection with the induction pattern and the peripheral circuit through a lapping block;
(3) forming a sensing region pattern on the sensing pattern conductive layer by etching through a laser process; the laser spot diameter used for laser etching was 0.035 mm.
(4) Cutting off the redundant silver paste film pattern on one side according to the product shape, and etching a ground wire on the residual silver paste film pattern on the cut side by adopting laser; and the redundant silver paste film patterns are broken by laser or are completely removed by laser scanning.
(5) Coating optical cement on the base material printed with the silver paste circuit to enable the touch screen functional sheet to be integrally attached;
the printing method of the silver paste film pattern comprises the following steps:
(A) the full-page silver paste film pattern is divided into halves and then redesigned and integrated in the half-page silver paste film pattern, and a screen printing plate is prepared by the half-page silver paste film pattern; the pattern of the whole silver paste film is approximately rectangular and is centrosymmetric.
(B) And (3) pushing the base material along the direction of the central axis of the long shaft, firstly printing half of the silver paste film patterns on one side of the screen printing plate in the step (A) on the induction pattern conducting layer, stopping pushing the base material after the printing of the half of the silver paste film patterns is finished, horizontally rotating the screen printing plate for 180 degrees, then continuing pushing the base material along the original direction, and printing the other half of the silver paste film patterns to finish the printing of the whole silver paste film patterns.
Example 3: the 150-inch metal grid touch screen functional sheet is prepared by the following method:
(1) forming a transparent metal grid induction pattern conducting layer on one side or two sides of the substrate;
(2) printing a silver paste film pattern on the induction pattern conducting layer to enable the silver paste film pattern to be in electrical contact with the conducting film layer below, wherein the silver paste film pattern is in contact connection with the induction pattern and the peripheral circuit through a lapping block;
(3) forming a sensing region pattern on the sensing pattern conductive layer by etching through a laser process; the laser spot diameter used for laser etching was 0.035 mm.
(4) Cutting off the redundant silver paste film pattern on one side according to the product shape, and etching a ground wire on the residual silver paste film pattern on the cut side by adopting laser; and the redundant silver paste film patterns are broken by laser or are completely removed by laser scanning.
(5) Coating optical cement on the base material printed with the silver paste circuit to enable the touch screen functional sheet to be integrally attached;
the printing method of the silver paste film pattern comprises the following steps:
(1) the full-page silver paste film pattern is divided into halves and then redesigned and integrated in the half-page silver paste film pattern, and a screen printing plate is prepared by the half-page silver paste film pattern; the pattern of the whole silver paste film is approximately square and is centrosymmetric.
(2) And (2) pushing the base material along the direction of the central shaft, printing half of the silver paste film patterns on one side of the screen printing plate in the step (A) on the induction pattern conducting layer, stopping pushing the base material after the printing of the half of the silver paste film patterns is finished, horizontally rotating the screen printing plate for 180 degrees, then continuing to push the base material along the original direction, and printing the other half of the silver paste film patterns to finish the printing of the whole silver paste film patterns.
Example 4: the 150-inch nano-silver touch screen functional sheet is prepared by the following method:
(1) forming a transparent nano silver induction pattern conducting layer on one side or two sides of the substrate;
(2) printing a silver paste film pattern on the induction pattern conducting layer to enable the silver paste film pattern to be in electrical contact with the conducting film layer below, wherein the silver paste film pattern is in contact connection with the induction pattern and the peripheral circuit through a lapping block;
(3) forming a sensing area pattern on the sensing pattern conductive layer by etching through a primary yellow light process;
(4) cutting off the redundant silver paste film pattern on one side according to the product shape, and etching a ground wire on the residual silver paste film pattern on the cut side by adopting laser; the excess silver paste film pattern is broken up by laser or completely swept away by laser (as shown in fig. 5).
(5) Coating optical cement on the base material printed with the silver paste circuit to enable the touch screen functional sheet to be integrally attached;
the printing method of the silver paste film pattern comprises the following steps:
(A) the full-page silver paste film pattern is divided into halves and then redesigned and integrated in the half-page silver paste film pattern, and a screen printing plate is prepared by the half-page silver paste film pattern; the full-page silver paste film pattern is approximately rectangular, is arranged in a mirror image mode by taking a short shaft central shaft as a symmetric shaft, and the central shaft is vertical to the substrate pushing direction.
(B) Pushing the substrate along the central axis direction of the long axis of the full-page silver paste film pattern, firstly printing half of the silver paste film pattern on one side of the screen printing plate in the step (A) on the induction pattern conducting layer (as shown in figure 3), stopping pushing the substrate after printing of the half of the silver paste film pattern is finished, horizontally rotating the screen printing plate for 180 degrees, then continuing to push the substrate along the original direction, and printing the other half of the silver paste film pattern to finish the printing of the full-page silver paste film pattern.
The existing touch screen is a complete touch screen design schematic diagram as shown in fig. 1, a silver paste pattern is printed on the edge (as shown in fig. 2), according to the existing method, a complete silver paste pattern film needs to be formed, then a screen printing plate is dried, and then corresponding touch channels and silver paste edge channels are etched by laser and other methods. Therefore, when a large-size touch screen needs to be researched and developed, the size of the existing equipment cannot meet research and development requirements, and larger equipment needs to be purchased in the research and development process, for example, 86-inch blackboards are always manufactured in the existing production systems, however, along with the development, a 150-inch product with 2 86 components combined together needs to be researched and developed to lead the direction of future blackboards, due to the research and development tip, the existing silk-screen printing plate and equipment cannot be purchased and obtained, if the large screen printing plate and equipment for research and development need to be customized, the large screen printing plate and equipment need to be well matched with the existing silk-screen printing plate and equipment, and the developed product needs to be tested in a lot of time. So our method is to divide the 150 inch full-page silver paste film pattern into 2 86 inch silver paste film patterns, separate them from the middle, redesign and integrate them together, and finally print the full-page silver paste block film pattern (as shown in fig. 4).
Analyzing the deviation degree of the silver paste film pattern:
the touch screen functional sheet is prepared according to the method in the embodiments 1 to 4 and the method of 2 86-inch screen splicing printing (as a comparison example), the full-page silver paste block film patterns on the touch screen functional sheet are photographed in an equal ratio of 1:1, the theoretical silver paste block film patterns are used as templates, and after the superposition area is counted by Image-Pro Plus 6.0 software, the pattern deviation rate is calculated, wherein the calculation formula is as follows:
deviation ratio = (1- (overlap area/full-plate silver paste film pattern theoretical area)). 100%
The results are as follows:
TABLE 1 influence of different printing methods on the printing deviation ratio of the full-page silver paste film pattern
| Group of | Deviation ratio (%) |
| Example 1 | 0.031 |
| Example 2 | 0.018 |
| Example 3 | 0.022 |
| Example 4 | 0.024 |
| Comparative example | 0.583 |
The results in table 1 show that the method of the invention can significantly reduce the deviation rate of the printing of the full-page silver paste block film pattern, increase the consistency with the theoretical pattern and improve the printing accuracy.
In summary, from the previous research and development perspective, the existing small-size equipment can be used for developing a large-size sample, and after a stable and determined amount of development is completed, research and development experience is summarized before the equipment is purchased in a targeted manner, so that the investment in the research and development stages of technology development is reduced, and the time for ordering and learning new equipment is saved; the invention not only reduces the investment of earlier research and development and the waste of equipment caused by the suspension of projects, but also reduces the cost of die sinking and improves the product precision. The invention integrates the pattern divided into two on one screen printing plate, thus reducing half the cost of the film and the screen printing plate; according to the invention, the silver paste film patterns are printed by adopting a mode of turning over one screen printing plate, the difference of the screen printing plates does not exist, and the printing deviation of the whole silver paste film patterns is smaller, so that the consistency of the touch screen functional sheet prepared by the method is higher compared with that of a touch screen functional sheet printed by splicing 2 screen printing plates.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (6)
1. A method for preparing a large-size touch screen functional sheet by using a small screen printing plate is characterized by comprising the following specific steps:
(1) forming a transparent induction pattern conducting layer on the surface of one side or two sides of the base material;
(2) printing a silver paste film pattern on the induction pattern conducting layer to enable the silver paste film pattern to be in electrical contact with the conducting film layer below, wherein the silver paste film pattern is in contact connection with the induction pattern and the peripheral circuit through a lapping block;
(3) forming a sensing region pattern on the sensing pattern conductive layer by etching with a primary yellow light or laser process;
(4) cutting off the redundant silver paste film pattern on one side according to the product shape, and etching a ground wire on the residual silver paste film pattern on the cut side by adopting laser;
(5) coating optical cement on the substrate printed with the silver paste circuit to enable the touch screen functional sheet to be integrally attached;
the printing method of the silver paste film pattern comprises the following steps:
(A) the full-page silver paste film pattern is divided into halves and then redesigned and integrated in the half-page silver paste film pattern, and a screen printing plate is prepared by the half-page silver paste film pattern;
(B) and (3) pushing the substrate, printing half of the silver paste film patterns on one side of the screen printing plate in the step (A) on the induction pattern conducting layer, stopping pushing the substrate after printing of the half of the silver paste film patterns is finished, horizontally rotating the screen printing plate for 180 degrees, then continuing pushing the substrate along the original direction, and printing the other half of the silver paste film patterns to finish printing of the whole silver paste film patterns.
2. The method for preparing a large-size touch screen functional sheet by using a small screen printing plate as claimed in claim 1, wherein: the full-page silver paste film pattern is arranged in a mirror image mode by taking a central shaft as a symmetry axis, and the central shaft is perpendicular to the substrate pushing direction.
3. The method for preparing a large-size touch screen functional sheet by using a small screen printing plate as claimed in claim 1, wherein: the full-page silver paste film pattern is centrosymmetric.
4. The method for preparing a large-size touch screen functional sheet by using a small screen printing plate as claimed in claim 1, wherein: and the redundant silver paste film patterns are broken by laser or are completely removed by laser scanning.
5. The method for preparing a large-size touch screen functional sheet by using a small screen printing plate as claimed in claim 1, wherein: the induction pattern conducting layer is made of nano silver wires, metal grids or ITO materials.
6. The method for preparing a large-size touch screen functional sheet by using a small screen printing plate as claimed in claim 1, wherein: the diameter of a laser spot adopted by the laser etching is 0.035 mm.
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| CN113788630A (en) * | 2021-08-12 | 2021-12-14 | 广东趣点智能科技有限公司 | Processing technology of touch screen |
| CN113625899A (en) * | 2021-08-20 | 2021-11-09 | 河源市汇亮鑫光电科技股份有限公司 | Method for preparing large-size touch screen functional sheet by using small screen printing plate |
| CN113771512B (en) * | 2021-08-24 | 2023-02-24 | 天津北玻玻璃工业技术有限公司 | Large-layout glass edge colored glaze silk-screen printing method |
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