CN104965619A - Manufacturing method for metal grid type transparent conductive substrate - Google Patents
Manufacturing method for metal grid type transparent conductive substrate Download PDFInfo
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- CN104965619A CN104965619A CN201510388567.5A CN201510388567A CN104965619A CN 104965619 A CN104965619 A CN 104965619A CN 201510388567 A CN201510388567 A CN 201510388567A CN 104965619 A CN104965619 A CN 104965619A
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- metal grill
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Abstract
The invention discloses a manufacturing method for a metal grid type transparent conductive substrate. The manufacturing method comprises the steps of: 1) carrying out screen printing of metal conductive slurry on a transparent substrate, wherein a screen printing plate is provided with patterned meshes, and the metal conductive slurry form a pattern on the transparent substrate through the meshes; 2) carrying out pulse heating on the patterned metal conductive slurry on the transparent substrate under the effect of a high-power infrared lamp, solidifying a thin region on the edge of the metal conductive slurry, and not solidifying a thick region in the middle of the metal conductive slurry; and 3) removing the metal conductive slurry with the non-solidified thick region in the middle by flushing, leaving the solidified thin region on the edge of the metal conductive slurry, forming metal grid lines, and obtaining the metal grid type transparent conductive substrate. Metal grids on the metal grid type transparent conductive substrate manufactured with the method are strong in adhesion and unlikely to fall off; and the manufacturing process is simple and suitable for reel-to-reel large-scale production.
Description
Technical field
The present invention relates to the technical field that transparent conductive substrate makes, be related specifically to a kind of method for making of metal grill transparent conductive substrate.
Background technology
In prior art, adopt tin indium oxide (ITO) as the touch-control conductive material of small-size screen more.But along with the fast development of the smart electronics such as mobile phone, panel computer, its screen size also constantly increases, also more and more higher to the requirement of contact panel resistance value thus, tin indium oxide resistance value is comparatively large, and is not suitable for large-sized screen.
And along with the appearance of metal grill technology, due to the resistance value that it is less, paid attention to by increasing research staff and manufacturer, think and can substitute the screen that tin indium oxide is applied to large-sized contact panel.As Chinese patent 201410315426.6 proposes a kind of mutual capacitance multi-point touch electrode structure based on single-layer metal grid, be exactly adopt metal grill as touch-control conductive sensor device.
In the prior art, the method for making of metal grill transparent conductive substrate mainly adopts photoetching technique, phase differential Enhanced Imaging technology and stamping technique.Photoetching technique is metal level in substrate surface plating, then is coated with photoresist on the metal layer, then shifts the pattern of metal grill by ultraviolet light, by etching away metal after development, forms surface metal clathrum; The fine rule that this technology can realize metal grill is wide, but complex process, the problems such as large scale light shield is expensive.Phase differential Enhanced Imaging technology is the pattern utilizing the phase transition frequency between fundamental frequency light and convert light to match metal grill on substrate, this technical costs is low, but owing to being subject to the restriction of technical conditions, the inversion frequency of phase place is difficult to reach very high, be therefore difficult to the very thin metal grill of live width.And stamping technique be by by embossing male die tool by imprint patterns on flexible base plate, form pattern groove, again by metal filled in groove, form wire netting compartment, stamping technique avoids metal grill and not strong, the caducous problem of substrate attachment power, but the impressing mould cost of this technology is very high, and the product of different metal grid also needs different imprint patterns moulds.
Summary of the invention
The object of the present invention is to provide a kind of method for making of metal grill transparent conductive substrate, metal grill strong adhesion on the metal grill transparent conductive substrate of making, difficult drop-off, and manufacture craft is simple, is applicable to volume to volume large-scale production.
For this reason, the present invention is by the following technical solutions:
A method for making for metal grill transparent conductive substrate, comprises as follows:
1) carry out screen-printing metal electrocondution slurry on the transparent substrate, wherein said half tone is with the mesh of patterning, and described metal conductive paste forms pattern on the transparent substrate through mesh;
2) by the metal conductive paste of patterning on transparency carrier PULSE HEATING under Infrared High-Power lamp, metal conductive paste thin edge district is solidified, and thick middle district is uncured;
3) metal conductive paste uncured for thick middle district is rinsed removing, leave the part that thin edge district has solidified, form metal grid lines, obtain metal grill transparent conductive substrate.
Preferably, described mesh pattern is rectangle, square, rhombus, hexagon or other polygon, and the equivalent diameter of described mesh is 100 ~ 500 μm.
Preferably, described method also comprises the dutycycle and number of pulses that control Infrared High-Power lamp pulse, realize the solidification of thin edge district, and thick middle district does not solidify simultaneously, thus controls the width forming metal grid lines.
Preferably, the pulse current of described Infrared High-Power lamp is 50 ~ 100A, and the dutycycle of described pulse is 20% ~ 80%, and the recurrence interval is 100 ~ 500ms, and number of pulses is 20 ~ 50.
Preferably, the width of described metal grid lines is 1 ~ 5 μm.
Preferably, described transparency carrier is optical glass, PET, PMMA, PVC, PC, PP, PS or PE.
Preferably, described metal conductive paste is at least one in Cu, Ag, Al or Ni.
Adopt above technical scheme; under Infrared High-Power lamp under PULSE HEATING, make metal conductive paste form the solidification of thin edge district, thick middle district is uncured; metal conductive paste uncured for thick middle district is rinsed removing; leave the part that thin edge district has solidified, form metal grid lines, obtain metal grill transparent conductive substrate; metal grill strong adhesion on the metal grill transparent conductive substrate adopting above-mentioned method to make; difficult drop-off, and manufacture craft is simple, is applicable to volume to volume large-scale production.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the method for making of metal grill transparent conductive substrate of the present invention.
Fig. 2 is that metal conductive paste of the present invention forms the structural representation of pattern on the transparent substrate through mesh.
Fig. 3 forms the solidification of thin edge district, the morphosis schematic diagram that thick middle district is uncured for the invention belongs to electrocondution slurry.
Fig. 4 is the structural representation that thin edge district of the present invention forms metal grid lines
Fig. 5 is the structural representation of the metal grill transparent conductive substrate that the present invention makes.
Fig. 6 is the Structure and Process schematic diagram of the metal grill transparency carrier of the embodiment of the present invention four.
Embodiment
In order to make object of the present invention, feature and advantage more clear, below in conjunction with drawings and Examples, explanation is specifically made to the specific embodiment of the present invention, in the following description, set forth a lot of concrete details so that understand the present invention fully, but the present invention can implement in other modes being much different from description.Therefore, the present invention is not by the restriction of the concrete enforcement of following discloses.
A method for making for metal grill transparent conductive substrate, as shown in Figure 1, comprises as follows:
1) on transparency carrier 1, carry out screen-printing metal electrocondution slurry 2, wherein said half tone is with the mesh of patterning, and described metal conductive paste 2 forms pattern on the transparent substrate through mesh, as shown in Figure 2;
2) by the metal conductive paste 2 of patterning on transparency carrier 1 PULSE HEATING under Infrared High-Power lamp, metal conductive paste 2 thin edge district 21 is solidified, and thick middle district 22 is uncured, as shown in Figure 3;
3) metal conductive paste uncured for thick middle district 22 is rinsed removing, leave the part that thin edge district 21 has solidified, form metal grid lines, as shown in Figure 4, obtain metal grill transparent conductive substrate, as shown in Figure 5.
Wherein, described mesh pattern is rectangle, square, rhombus, hexagon or other polygon, and the equivalent diameter of described mesh is 100 ~ 500 μm.
Wherein, described method also comprises the dutycycle and number of pulses that control Infrared High-Power lamp pulse, realize the solidification of thin edge district, and thick middle district does not solidify simultaneously, thus controls the width forming metal grid lines.
Wherein, the pulse current of described Infrared High-Power lamp is 50 ~ 100A, and the dutycycle of described pulse is 20% ~ 80%, and the recurrence interval is 100 ~ 500ms, and number of pulses is 20 ~ 50.
Wherein, the width of described metal grid lines is 1 ~ 5 μm.
Wherein, described transparency carrier is optical glass, PET, PMMA, PVC, PC, PP, PS or PE.
Wherein, described metal conductive paste is at least one in Cu, Ag, Al or Ni.
Embodiment one:
A method for making for metal grill transparent conductive substrate, as shown in Figure 1, comprises as follows:
1) on transparency carrier 1, carry out screen-printing metal electrocondution slurry 2, wherein said half tone is with the mesh of patterning, and described metal conductive paste 2 forms pattern on the transparent substrate through mesh, as shown in Figure 2;
2) by the metal conductive paste 2 of patterning on transparency carrier 1 PULSE HEATING under Infrared High-Power lamp, metal conductive paste 2 thin edge district 21 is solidified, and thick middle district 22 is uncured, as shown in Figure 3;
3) metal conductive paste uncured for thick middle district 22 is rinsed removing, leave the part that thin edge district 21 has solidified, form metal grid lines, as shown in Figure 4, obtain metal grill transparent conductive substrate, as shown in Figure 5.
Wherein, described transparency carrier PET, described mesh pattern is square, described mesh equivalent diameter is 500 μm, and the pulse current of described Infrared High-Power lamp is 100A, and the dutycycle of described pulse is 80%, recurrence interval is 500ms, number of pulses is 50, and after rinsing, the metal grill line width that thin edge district cured portion is formed is 5 μm.
Detected by metal grill transparent conductive substrate obtained above, its transmittance is 88%, and square resistance is 1.5 Ω/.
Embodiment two
Uniquely differently from embodiment one to be, described mesh equivalent diameter is 300 μm, the pulse current of described Infrared High-Power lamp is 75A, the dutycycle of described pulse is 50%, recurrence interval is 300ms, number of pulses is 35, and after rinsing, the metal grill line width that thin edge district cured portion is formed is 3 μm.
Detected by metal grill transparent conductive substrate obtained above, its transmittance is 89%, and square resistance is 3.5 Ω/.
Embodiment three
Uniquely differently from embodiment one to be, described mesh equivalent diameter is 100 μm, the pulse current of described Infrared High-Power lamp is 50A, the dutycycle of described pulse is 20%, recurrence interval is 100ms, number of pulses is 20, and after rinsing, the metal grill line width that thin edge district cured portion is formed is 1 μm.
Detected by metal grill transparent conductive substrate obtained above, its transmittance is 91%, and square resistance is 5 Ω/.
Embodiment four
Uniquely differently from embodiment one to be, as shown in Figure 6, described transparency carrier PET is described mesh pattern is rhombus, mesh equivalent diameter is 500 μm, and the pulse current of described Infrared High-Power lamp is 100A, and the dutycycle of described pulse is 80%, recurrence interval is 500ms, number of pulses is 50, and after rinsing, the metal grill line width that thin edge district cured portion is formed is 5 μm.
Detected by metal grill transparent conductive substrate obtained above, its transmittance is 86%, and square resistance is 1 (Ω/).
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a method for making for metal grill transparent conductive substrate, is characterized in that, comprises as follows:
1) carry out screen-printing metal electrocondution slurry on the transparent substrate, wherein said half tone is with the mesh of patterning, and described metal conductive paste forms pattern on the transparent substrate through mesh;
2) by the metal conductive paste of patterning on transparency carrier PULSE HEATING under Infrared High-Power lamp, metal conductive paste thin edge district is solidified, and thick middle district is uncured;
3) metal conductive paste uncured for thick middle district is rinsed removing, leave the part that thin edge district has solidified, form metal grid lines, obtain metal grill transparent conductive substrate.
2. the method for making of a kind of metal grill transparent conductive substrate according to claim 1, is characterized in that, described mesh pattern is rectangle, square, rhombus, hexagon or other polygon, and the equivalent diameter of described mesh is 100 ~ 500 μm.
3. the method for making of a kind of metal grill transparent conductive substrate according to claim 1, it is characterized in that, described method also comprises the dutycycle and number of pulses that control Infrared High-Power lamp pulse, realize the solidification of thin edge district, and thick middle district does not solidify simultaneously, thus control the width forming metal grid lines.
4. the method for making of a kind of metal grill transparent conductive substrate according to claim 3, it is characterized in that, the pulse current of described Infrared High-Power lamp is 50 ~ 100A, and the dutycycle of described pulse is 20% ~ 80%, recurrence interval is 100 ~ 500ms, and number of pulses is 20 ~ 50.
5. the method for making of a kind of metal grill transparent conductive substrate according to claim 3, is characterized in that, the width of described metal grid lines is 1 ~ 5 μm.
6. the method for making of a kind of metal grill transparent conductive substrate according to claim 1, is characterized in that, described transparency carrier is optical glass, PET, PMMA, PVC, PC, PP, PS or PE.
7. the method for making of a kind of metal grill transparent conductive substrate according to claim 1, is characterized in that, described metal conductive paste is at least one in Cu, Ag, Al or Ni.
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| CN201510388567.5A CN104965619A (en) | 2015-07-04 | 2015-07-04 | Manufacturing method for metal grid type transparent conductive substrate |
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| CN201510388567.5A CN104965619A (en) | 2015-07-04 | 2015-07-04 | Manufacturing method for metal grid type transparent conductive substrate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107039358A (en) * | 2017-04-20 | 2017-08-11 | 中国电子科技集团公司第二十四研究所 | A kind of thick film substrate and its manufacture method of low voidage high reliability |
| CN110471492A (en) * | 2018-05-09 | 2019-11-19 | 深圳市触想智能股份有限公司 | A kind of production method of calligraphic copying all-in-one machine and its touch screen |
| CN112181206A (en) * | 2017-03-20 | 2021-01-05 | 苏州诺菲纳米科技有限公司 | Touch control device |
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| US20110291058A1 (en) * | 2010-05-28 | 2011-12-01 | Kunishi Yousuke | Transparent conductive film and conductive substrate using the same |
| CN203552796U (en) * | 2013-06-24 | 2014-04-16 | 北京中科纳通电子技术有限公司 | Nanometer conductive silver pulp light curing device |
| CN104750311A (en) * | 2015-03-16 | 2015-07-01 | 深圳市宇顺电子股份有限公司 | Manufacturing method of metal mesh conducting film, metal mesh conducting film and touch panel |
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2015
- 2015-07-04 CN CN201510388567.5A patent/CN104965619A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110291058A1 (en) * | 2010-05-28 | 2011-12-01 | Kunishi Yousuke | Transparent conductive film and conductive substrate using the same |
| CN203552796U (en) * | 2013-06-24 | 2014-04-16 | 北京中科纳通电子技术有限公司 | Nanometer conductive silver pulp light curing device |
| CN104750311A (en) * | 2015-03-16 | 2015-07-01 | 深圳市宇顺电子股份有限公司 | Manufacturing method of metal mesh conducting film, metal mesh conducting film and touch panel |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112181206A (en) * | 2017-03-20 | 2021-01-05 | 苏州诺菲纳米科技有限公司 | Touch control device |
| CN112181206B (en) * | 2017-03-20 | 2023-09-22 | 苏州诺菲纳米科技有限公司 | Touch control device |
| CN107039358A (en) * | 2017-04-20 | 2017-08-11 | 中国电子科技集团公司第二十四研究所 | A kind of thick film substrate and its manufacture method of low voidage high reliability |
| CN110471492A (en) * | 2018-05-09 | 2019-11-19 | 深圳市触想智能股份有限公司 | A kind of production method of calligraphic copying all-in-one machine and its touch screen |
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