CN102156601A - Method for manufacturing conducting circuit of capacitive touch screen - Google Patents
Method for manufacturing conducting circuit of capacitive touch screen Download PDFInfo
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- CN102156601A CN102156601A CN 201110138384 CN201110138384A CN102156601A CN 102156601 A CN102156601 A CN 102156601A CN 201110138384 CN201110138384 CN 201110138384 CN 201110138384 A CN201110138384 A CN 201110138384A CN 102156601 A CN102156601 A CN 102156601A
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- ito
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Abstract
The invention discloses a method for manufacturing a conducting circuit of a capacitive touch screen. The method comprises the following steps of: (1) forming a wet film on the surface of a Cu layer of an ITO-Cu (Indium Tin Oxide-Copper) film from photosensitive ink in a screen printing mode, drying the photosensitive ink, exposing, curing the photosensitive ink corresponding to a Cu conducting circuit pattern, removing uncured photosensitive ink and removing the Cu layer which is not covered by the photosensitive ink to obtain a Cu conducting circuit; (2) forming an ITO conducting circuit pattern on the surface of an ITO layer, which is not covered by the Cu layer, of the ITO-Cu film from the ink in the screen printing mode, drying the ink, and removing the ITO layer which is not covered by the Cu layer and the ink to obtain an ITO conducting circuit; and (3) removing shielding ink on the Cu layer and the ITO layer. By adopting the method for manufacturing the conducting circuit of the capacitive touch screen, the manufactured Cu conducting circuit is finer, has higher smoothness, does not have burr and saw-tooth phenomena and can be continuously produced.
Description
Technical field
The present invention relates to a kind of method that is used to make P.e.c., the manufacture method of especially a kind of capacitive touch screen conducting wire.
Background technology
Touch-screen comprises resistance-type, condenser type, infrared and surface acoustic wave type touch-screen, wherein, the capacitive touch screen technical development becomes can discern its surperficial multiple point touching, be convenient to the user by the light multiple complicated operations that realizes file, recreation of simple action, have the multi-point touch function, be subjected to extensive concern.The multi-point touch function of capacitive touch screen realizes that principle generally is that ito thin film with touch-screen carries out subregion and is designed to given shape, then, touch screen controller to each independently and the ito thin film with given shape carry out electric capacity inspection and control, discern the multiple point touching on their surfaces.For ito thin film and touch screen controller are electrically connected, touch-screen need design the multiply conducting wire.A key point for preparing this class capacitive touch screen is that the finite space in the non-window area of touch-screen prepares these conducting wires, the technological process that adopts is first physical vacuum plating conducting film at present, expose then, development and etching, make metal conductive film become the metallic conduction circuit.The cost of these technological processs is all higher, causes costing an arm and a leg of capacitive touch screen.For head it off, the method of generally using is to adopt the serigraphy conductive silver glue on ito thin film at present, it as application number 200910109340.7 Chinese patent, it has reduced production cost, but have following defective: (1) is because conductive silver glue has osmosis, printing fine line road elargol is difficulty very, and minimum is printed the conducting wire that the live width line-spacing is 80 * 80 μ m only; (2) phenomenon of burr, sawtooth appears when printed wire easily; (3) time being easy to generate in printing that the dry plate phenomenon causes can't continuity production.Above production technology problem is to hinder the bottleneck of industry development always.
Summary of the invention
The objective of the invention is to overcome the problems referred to above of prior art, but a kind of manufacture method of making the capacitive touch screen conducting wire of fine rule road and continuity production is provided.
To achieve these goals, the technical solution used in the present invention is: the manufacture method of a kind of capacitive touch screen conducting wire, and it comprises by the following step smoothly successively:
(1) photosensitive-ink is formed wet film by screen printing mode on the surface of the Cu of ITO-Cu film layer, dry photosensitive-ink, utilize the film that is manufactured with Cu conducting wire pattern that photosensitive-ink is exposed again, the photosensitive-ink of Cu conducting wire pattern correspondence is solidified, remove uncured photosensitive-ink again, remove the Cu layer that is not hidden then, obtain the Cu conducting wire by photosensitive-ink;
(2) printing ink is formed the ITO conductive circuit pattern by screen printing mode on the surface of the ITO layer that is not hidden by the Cu layer of ITO-Cu film, dry printing ink is removed the ITO layer that is hidden by Cu layer and printing ink again, obtains the ITO conducting wire;
(3) the shielding printing ink on removal Cu layer and the ITO layer.
As the optimal technical scheme of technique scheme, in the step (1), the order number of the half tone of printing wet film is 350～500 orders, and print thickness is 6～9 μ m.
As the optimal technical scheme of technique scheme, in the step (1), the light that exposure is adopted is ultraviolet light, and luminous energy is 4000～6000W, and the time shutter is 5～20s.
As the optimal technical scheme of technique scheme, remove the used Cu of Cu layer that is not hidden in the step (1) and take off plating bath and comprise by weight percentage following component: CuCl by photosensitive-ink
25～8%, ethanol ammonia 10～12%, NaCl 2～4%, sodium citrate 0.02～0.06%, all the other are water.
As the optimal technical scheme of technique scheme, in the step (1), utilizing described Cu to take off plating bath, to remove not the temperature of the Cu layer that is hidden by photosensitive-ink be 20～30 ℃.
As the optimal technical scheme of technique scheme, the drying mode that is adopted in described step (1) and the step (2) is an infrared drying.
Compared with prior art, advantage of the present invention is:
(1) manufacture method of capacitive touch screen provided by the invention conducting wire, utilize PHOTO method (photolithography method) on the ITO-Cu film, to make the Cu conducting wire, serigraphy elargol method compared to prior art, the Cu conducting wire that the present invention makes is thinner, the live width line-spacing that can accomplish is 50 * 50 μ m, helps making more Cu conducting wire in the finite space;
(2) manufacture method of capacitive touch screen provided by the invention conducting wire, the Cu conducting wire of its making, the elargol circuit compared to prior art has good fluency, and circuit does not have burr, no crenellated phenomena;
(3) manufacture method of capacitive touch screen provided by the invention conducting wire, but continuity production, when having avoided the printing elargol because dry plate phenomenon and can't continuity production has improved production efficiency greatly.
Description of drawings
Fig. 1 is the structural representation of the used ITO-Cu film of the embodiment of the invention.
Embodiment
The manufacture method of capacitive touch screen provided by the invention conducting wire, utilize PHOTO method (photolithography method) on the ITO-Cu film, to make the Cu conducting wire earlier, utilize conventional method on the ITO layer, to make the ITO conducting wire again, obtain the touch-screen conducting wire at last.Below the used ITO-Cu film of each embodiment structural representation as shown in Figure 1, the ITO-Cu film is made up of from bottom to up scratch resistant layer (Clear hardcoating) 1, pet layer 2, bottom surface coatings (Undercoating) 3, ITO layer 4 and Cu layer 5.Below embodiments of the invention are elaborated.
Embodiment 1
(1) make the Cu conducting wire:
A, utilize the full-automatic screen printer can be acidproof but can be printed on the surface of Cu layer 5 of ITO-Cu film by the photosensitive-ink of alkali liquid corrosion (photosensitive-ink that adopts in the present embodiment is EKIRESIN PER-800 (B-4102)) and form wet film, wherein, the half tone order number of printing wet film is 350 orders, print thickness is 9 μ m, after finishing printing, utilize the IR line to carry out drying.Then, under the UV of 4000W rayed, utilize the film that is manufactured with Cu conducting wire pattern that the Cu layer 5 lip-deep photosensitive-ink of ITO-Cu film are exposed, the photosensitive-ink of Cu conducting wire pattern correspondence is solidified, the time shutter is 5 s.Utilize the developing process line that unexposed wet film is partly washed development then, remove uncured photosensitive-ink.After the development, promptly covered on the Cu of ITO-Cu film layer 5 surface with the film on the consistent shielding printing ink of Cu conducting wire pattern.
B, utilize Cu to take off plating bath to remove the Cu layer 5 do not hidden by photosensitive-ink, taking off the plating temperature is 25 ℃, and it is 0.5 kg/cm that Cu takes off that the plating bath spray presses
2, transmission of materials speed is 2.5m/min.Cu layer 5 takes off after plating finishes, and material is proceeded washing and wind is cut drying, obtains the Cu conducting wire.
In the present embodiment, the each component proportioning that Cu takes off plating bath is (by weight percentage): CuCl
25%, ethanol ammonia 12%, NaCl 4%, sodium citrate 0.05%, all the other are water.Cu takes off plating bath, and to remove not the reaction equation of the Cu layer that is hidden by photosensitive-ink as follows:
Cu(NH
3)
4Cl+Cu=2Cu(NH
3)
2Cl （1）
[Cu(NH
3)
2]Cl+2NH
4Cl+2NH
3+1/2O
2=2[Cu(NH
3)
4]Cl
2+H
2O （2）
Be alkalescence because Cu takes off plating bath, can not cause damage ITO layer (tin indium oxide).NaCl is used for keeping reaction system Cl
-Concentration.
(2) make the ITO conducting wire:
On full-automatic printer; utilize acidproof half tone that the surface screen-printed acid-proof ink of the ITO layer 4 that is hidden by Cu layer 5 of ITO-Cu film is formed the ITO conductive circuit pattern; behind the dry printing ink of UV; utilize ITO film etching line; etching does not have the ITO layer 4 of acidproof protection in acid tank, obtains the ITO conducting wire.The acid tank spray is pressed and is 0.5kg/cm
2, the acid tank transmission speed is 1.8m/min.
(3) the shielding printing ink on removal Cu layer 5 and the ITO layer 4 in the alkali groove.It is 0.5 kg/cm that the spray of alkali groove is pressed
2, alkali groove transmission speed is 2.0m/min.Through washing with after wind cuts drying, promptly obtained containing the ITO film of ITO figure layer and Cu conducting wire.
At last, the ITO film via line combination that the printing etching is good, radium-shine groove, radium-shine profile, the semi-manufacture deaeration, semi-manufacture test, the combination of semi-manufacture and face version, the finished product deaeration, the finished product functional test promptly obtains replacing the capacitive touch screen of elargol as the conducting wire with Cu.
As different from Example 1, in the step (a), half tone order number is 500 orders, and print thickness is 6 μ m, can make thinner Cu conducting wire.
As different from Example 1, in the step (b), the each component proportioning that the Cu that is adopted takes off plating bath is (by weight percentage): CuCl
28%, ethanol ammonia 10%, NaCl 2%, sodium citrate 0.05%, all the other are water.
As different from Example 1, in the step (b), the each component proportioning that the Cu that is adopted takes off plating bath is (by weight percentage): CuCl
27 %, ethanol ammonia 11%, NaCl 2.5%, sodium citrate 0.06%, all the other are water.
Embodiment 5
As different from Example 1, in the step (b), it is that conventional Cu takes off plating bath that the Cu that is adopted takes off plating bath, and its component is mainly ammoniacal liquor and FeCl
3
Be specific embodiments of the invention only below, do not limit protection scope of the present invention with this; Any replacement and the improvement done on the basis of not violating the present invention's design all belong to protection scope of the present invention.
Claims (6)
1. the manufacture method of a capacitive touch screen conducting wire is characterized in that, comprises the following steps:
(1) photosensitive-ink is formed wet film by screen printing mode on the surface of the Cu of ITO-Cu film layer, dry photosensitive-ink, utilize the film that is manufactured with Cu conducting wire pattern that photosensitive-ink is exposed again, the photosensitive-ink of Cu conducting wire pattern correspondence is solidified, remove uncured photosensitive-ink again, remove the Cu layer that is not hidden then, obtain the Cu conducting wire by photosensitive-ink;
(2) printing ink is formed the ITO conductive circuit pattern by screen printing mode on the surface of the ITO layer that is not hidden by the Cu layer of ITO-Cu film, dry printing ink is removed the ITO layer that is hidden by Cu layer and printing ink again, obtains the ITO conducting wire;
(3) the shielding printing ink on removal Cu layer and the ITO layer.
2. the manufacture method of capacitive touch screen according to claim 1 conducting wire is characterized in that: in the step (1), the order number of the half tone of printing wet film is 350～500 orders, and print thickness is 6～9 μ m.
3. the manufacture method of capacitive touch screen according to claim 1 conducting wire is characterized in that: in the step (1), the light that exposure is adopted is ultraviolet light, and luminous energy is 4000～6000W, and the time shutter is 5～20s.
4. the manufacture method of capacitive touch screen according to claim 1 conducting wire is characterized in that: remove the used Cu of Cu layer that is not hidden by photosensitive-ink in the step (1) and take off plating bath and comprise by weight percentage following component: CuCl
25～8%, ethanol ammonia 10～12%, NaCl 2～4%, sodium citrate 0.02～0.06%, all the other are water.
5. the manufacture method of capacitive touch screen according to claim 4 conducting wire is characterized in that: in the step (1), utilizing described Cu to take off plating bath, to remove not the temperature of the Cu layer that is hidden by photosensitive-ink be 20～30 ℃.
6. the manufacture method of capacitive touch screen according to claim 1 conducting wire is characterized in that: the drying mode that is adopted in described step (1) and the step (2) is an infrared drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110138384 CN102156601A (en) | 2011-05-26 | 2011-05-26 | Method for manufacturing conducting circuit of capacitive touch screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110138384 CN102156601A (en) | 2011-05-26 | 2011-05-26 | Method for manufacturing conducting circuit of capacitive touch screen |
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| CN102156601A true CN102156601A (en) | 2011-08-17 |
Family
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| CN 201110138384 Pending CN102156601A (en) | 2011-05-26 | 2011-05-26 | Method for manufacturing conducting circuit of capacitive touch screen |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103309541A (en) * | 2013-06-27 | 2013-09-18 | 袁博 | Manufacturing method for capacitance type touch screen wire circuit |
| CN106681436A (en) * | 2016-12-30 | 2017-05-17 | 维沃移动通信有限公司 | Coloring process of photosensitive ink on cover plate |
| WO2018028037A1 (en) * | 2016-08-10 | 2018-02-15 | 意力(广州)电子科技有限公司 | Touch screen copper processing method, and touch screen |
| CN109109538A (en) * | 2018-07-24 | 2019-01-01 | 芜湖伦丰电子科技有限公司 | A kind of manufacture craft improving touch screen yield |
| CN111347805A (en) * | 2020-03-13 | 2020-06-30 | 杭州美迪凯光电科技股份有限公司 | Special-shaped pattern coating method for crystal low-pass filter |
| CN114356137A (en) * | 2021-12-29 | 2022-04-15 | 福建省石狮市通达电器有限公司 | Touch membrane with LCD color screen effect and processing technology thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232782A (en) * | 2007-01-23 | 2008-07-30 | 李东明 | Printed circuit board mask hole electroplating molding process |
| CN201465083U (en) * | 2009-05-21 | 2010-05-12 | 意力(广州)电子科技有限公司 | Monolayer conductive film capacitive touch screen |
-
2011
- 2011-05-26 CN CN 201110138384 patent/CN102156601A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101232782A (en) * | 2007-01-23 | 2008-07-30 | 李东明 | Printed circuit board mask hole electroplating molding process |
| CN201465083U (en) * | 2009-05-21 | 2010-05-12 | 意力(广州)电子科技有限公司 | Monolayer conductive film capacitive touch screen |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103309541A (en) * | 2013-06-27 | 2013-09-18 | 袁博 | Manufacturing method for capacitance type touch screen wire circuit |
| WO2018028037A1 (en) * | 2016-08-10 | 2018-02-15 | 意力(广州)电子科技有限公司 | Touch screen copper processing method, and touch screen |
| CN106681436A (en) * | 2016-12-30 | 2017-05-17 | 维沃移动通信有限公司 | Coloring process of photosensitive ink on cover plate |
| CN109109538A (en) * | 2018-07-24 | 2019-01-01 | 芜湖伦丰电子科技有限公司 | A kind of manufacture craft improving touch screen yield |
| CN111347805A (en) * | 2020-03-13 | 2020-06-30 | 杭州美迪凯光电科技股份有限公司 | Special-shaped pattern coating method for crystal low-pass filter |
| CN111347805B (en) * | 2020-03-13 | 2022-02-22 | 杭州美迪凯光电科技股份有限公司 | Special-shaped pattern coating method for crystal low-pass filter |
| CN114356137A (en) * | 2021-12-29 | 2022-04-15 | 福建省石狮市通达电器有限公司 | Touch membrane with LCD color screen effect and processing technology thereof |
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Application publication date: 20110817 |