CN103365477B - OGS (one glass solution) touch panel and manufacturing method thereof - Google Patents
OGS (one glass solution) touch panel and manufacturing method thereof Download PDFInfo
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- CN103365477B CN103365477B CN201310301999.9A CN201310301999A CN103365477B CN 103365477 B CN103365477 B CN 103365477B CN 201310301999 A CN201310301999 A CN 201310301999A CN 103365477 B CN103365477 B CN 103365477B
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Abstract
The invention relates to the field of touch screen, in particular to an OGS (one glass solution) touch panel and a manufacturing method thereof. The OGS touch panel comprises a conductive glass, an ITO conductive film carved with ITO patterns is arranged on the lower surface of the conductive glass, a black frame layer is silk printed with a black frame layer on the periphery of the lower surface of the ITO conductive film, a plurality of transparent holes are formed in the black frame layer and are communicated with the ITO conductive film, the black frame layer comprises a conductive sizing agent layer covering the transparent holes, silver paste is distributed on the conductive sizing agent layer, and the silver paste is connected with a flexible circuit board; the manufacturing method comprises the steps of image exposure, developing, etching, silk printing conductive sizing agent layer and the like. The method provided by the invention has the following advantages: (1) as the conductive glass is provided with ITO conductive film, direct selection of conductive glass enables the panel manufacturer not to plate another layer of ITO conductive film; (2) the conductive sizing layer can be poured into the holes through the transparent holes, and the ITO conductive film is broken over with the silver paste through the conductive sizing layer, so that electric signal can be transmitted; (3) compared with the molybdenum aluminum molybdenum film, the silver film is simple in technology and low in cost.
Description
Technical field
The present invention relates to touch-screen field is and in particular to a kind of OGS contact panel and its manufacture method.
Background technology
OGS（One glass solution, monolithic glass formula) contact panel directly forms ITO on protective glass and leads
Electrolemma and sensor are so that one block of glass simultaneously works as the double action of protective glass and touch sensing.OGS contact panel with
By means of multi-point touch operation mode, simple in combination with structure, light, thin, translucency good etc. numerous advantages, be increasingly becoming city
The main flow of field.
With reference to Fig. 1, protective glass 1 that the OGS contact panel of prior art includes setting gradually from top to bottom, black surround layer 2,
ITO conducting film 3 and molybdenum aluminium molybdenum film, protective glass 1 is non-conductive, and the peripheral part of black surround layer 2 covering protection glass 1 lower surface is black
It is visible area in frame layer 2, ITO conducting film 3 covering protection glass 1, ITO conducting film 3 is carved with ITO pattern, and ITO pattern passes through molybdenum
Aluminium molybdenum film is put up a bridge and is constituted conducting wire, and molybdenum aluminium molybdenum film connects FPC.The OGS contact panel of prior art is because by molybdenum
Aluminium molybdenum is put up a bridge, and need to first plate one layer of molybdenum, then plate one layer of aluminium, finally plate one layer of molybdenum again, required precision is high during plating molybdenum aluminium molybdenum film, from forming
This is very high, and capital fund is big, and technique is very complicated, and production efficiency is relatively low, and fraction defective is also high.
Content of the invention
The OGS contact panel of one low cost, it is an object of the invention to overcoming shortcoming and defect of the prior art, is provided
And its manufacture method.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of OGS contact panel, including electro-conductive glass, the lower surface of described electro-conductive glass is the ITO conduction carving ITO pattern
Film, the peripheral part silk-screen of ITO conducting film lower surface has black surround layer, and black surround layer has some transparent with what ITO conducting film connected
Hole, the lower surface silk-screen of black surround layer has the conductive paste bed of material, and the conductive paste bed of material is furnished with the silver paste connecting FPC.
Wherein, described electro-conductive glass is individual layer ITO electro-conductive glass.
Wherein, described electro-conductive glass is double-deck ITO electro-conductive glass.
Wherein, a diameter of 0.2-0.3mm of described transparent apertures.
Wherein, the described conductive paste bed of material is carbon pulp layer, and the thickness of carbon pulp layer is 3-7 μm.
Wherein, the sheet resistance of described individual layer ITO electro-conductive glass is 40-60 Ω/.
Wherein, the sheet resistance of described bilayer ITO electro-conductive glass is 200-300 Ω/.
A kind of preparation method of OGS contact panel, described preparation method includes：
S1：Cleaning, the electro-conductive glass of ITO pattern is not carved in cleaning；
S2：Resist coating, coating photoresist is on the electro-conductive glass after cleaning；
S3：Dry, the electro-conductive glass being coated with photoresist is dried；
S4：Image exposure, with ultraviolet and film vertical irradiation photoresist surface, makes the photoresist of illuminated part occur
Reaction；
S5：Photoresist through light irradiation part is removed by development with alkali lye, retains the photoresist of irradiated portion, and plus
Gu photoresist film；
S6：The ITO conducting film that unglazed photoresist covers is removed with acid solution, obtains the quarter ITO described in claim 1 by etching
The ITO conducting film of pattern；
S7：Silk-screen black surround layer, the lower surface peripheral part silk-screen black surround layer of the ITO conducting film that step S6 is obtained, black surround
Layer has the above-mentioned transparent apertures connecting with ITO conducting film；
S8：Silk-screened conductive pulp layer, the lower surface silk-screened conductive pulp layer of the black surround layer obtaining in step S7, electrocondution slurry
Layer covers transparent apertures；
S9：Silk-screen silver paste, the lower surface silk-screen of the conductive paste bed of material is connected with the silver paste of FPC.
Wherein, described S7 specifically includes step a and step b：
Step a：Silk-screen is once black, and in the peripheral part silk-screen black surround of above-mentioned ITO conducting film lower surface, black surround has above-mentioned
The transparent apertures connecting with ITO conducting film；
Step b：Silk-screen is secondary black, and silk-screen once, obtains above-mentioned black surround layer again on the black surround surface obtaining in step a silk-screen.
Wherein, it is additionally provided with step c before step b after described step a；
Step c, silk-screen is just protected, and carries out bad inspection to visible area described in claim 1.
Beneficial effect of the present invention：The present invention is compared with the advantage of prior art：（1）Directly select electro-conductive glass, conductive glass
The lower surface of glass can carry ITO conducting film, and in prior art, after protective glass buying is returned by display screen producer, also needs
Oneself one layer of ITO conducting film of plating, adds production process, has the hidden danger drawing high fraction defective；（2）By opening transparent apertures on black surround layer
The conductive paste bed of material is allow to pour in hole, ITO conducting film passes through the conductive paste bed of material and silver paste conducting thus transmitting telecommunication number；
（3）Molybdenum aluminium molybdenum film is compared in silver paste wiring, and not only process is simple but also cost are greatly reduced.
Brief description
Fig. 1 is the touch panel structure provided schematic diagram of OGS of prior art.
Fig. 2 is the touch panel structure provided schematic diagram of OGS of embodiment.
Fig. 1 and Fig. 2 includes drawings described below mark：
Protective glass -1；Black surround layer -2；ITO conducting film -3；Electro-conductive glass -4；Transparent apertures -5；The conductive paste bed of material -6.
Specific embodiment
Referring to Fig. 2, below in conjunction with accompanying drawing, the present invention is described in detail.
A kind of OGS contact panel, including electro-conductive glass 4, the lower surface of electro-conductive glass 4 is the ITO conducting film carving ITO pattern
The peripheral part silk-screen of 3, ITO conducting film 3 lower surface has a black surround layer 2, is visible area in black surround layer 2, black surround layer 2 have some with
The transparent apertures 5 of ITO conducting film 3 connection, also include the conductive paste bed of material 6 covering transparent apertures 5, the conductive paste bed of material 6 is furnished with silver paste, silver
Slurry connects FPC.In Fig. 2, ITO conducting film 3 is belonging to electro-conductive glass 4, and the conductive paste bed of material 6 meeting in actual production
Pour in transparent apertures 5, here illustrates.
Black surround layer 2 requires primarily for meeting the appearance for contact panel for the electronic product, and black surround layer 2 can make by black
Color ink silk-screen forms.Can be using the mould having hole, thus black surround layer silk-screen is well afterwards just with transparent apertures during silk-screen black surround layer 2
5.The conductive paste bed of material 6 makes silver paste connect with the ITO conducting film 3 of electro-conductive glass 4, can collect touching signals and be transferred to soft
Property wiring board.
The present embodiment is compared with the advantage of prior art：（1）The present embodiment directly selects electro-conductive glass 4, electro-conductive glass 4
Lower surface can carry ITO conducting film 3, and in prior art, after protective glass 1 buying is returned by display screen producer, also needs certainly
Oneself plates one layer of ITO conducting film 3, adds production process, has the hidden danger drawing high fraction defective；（2）By opening transparent apertures on black surround layer 2
5 allow the conductive paste bed of material 6 to pour in hole, and ITO conducting film 3 passes through the conductive paste bed of material 6 and silver paste conducting thus transmitting telecommunication
Number；（3）Molybdenum aluminium molybdenum film is compared in silver paste wiring, and not only process is simple but also cost are greatly reduced.
Electro-conductive glass 4 can be individual layer ITO electro-conductive glass or double-deck ITO electro-conductive glass.When selecting individual layer ITO electro-conductive glass,
The concrete silk-screen of black surround layer 2 is in the peripheral part of individual layer ITO electro-conductive glass lower surface.When selecting double-deck ITO electro-conductive glass, double-deck
Glass substrate, upper strata ITO conducting film, ITO Film and lower floor ITO that ITO electro-conductive glass includes setting gradually from top to bottom are conductive
Film, the concrete silk-screen of black surround layer 2 is in the peripheral part of lower floor ITO conducting film lower surface.
Because transparent apertures 5 can be seen from the front of contact panel, for avoiding generation product appearance bad, need to be to transparent apertures 5
Size be defined it is preferable that transparent apertures 5 diameter range be 0.2-0.3mm.
Color great disparity in order to pour into the conductive material of transparent apertures 5 and black surround layer 2 is not too large, it is to avoid the visual impression of user
By bad, the color of the conductive paste bed of material 6 is preferably and black surround layer 2 color is close.As better embodiment, the conductive paste bed of material 6 is
Carbon pulp layer, the color of carbon pulp layer is black, and black surround layer 2 color aberration is little, and the thickness of carbon pulp layer controls in 3-7 μ as far as possible simultaneously
M, it is to avoid the integral thickness of too thick impact product, the blocked up probability coming off of carbon pulp layer is also than larger.
According to individual layer ITO electro-conductive glass, its sheet resistance need to control in 40-60 Ω/, and the ITO of low-resistance therefore can be adopted to lead
Electrolemma.According to double-deck ITO electro-conductive glass, its sheet resistance is preferably 200-300 Ω/, can be conductive using the ITO of high resistant relatively
Film, the cost of high resistant ITO conducting film is relatively lower.Above-mentioned sheet resistance scope all can purchase the driving IC that can be suitable for, and drives IC
Connect FPC, flexible PCB calculates the touch point that senses of ITO conducting film 3 of electro-conductive glass 4 and by flexible wires
Road plate is reported to drive IC, realizes multi-point touch function.
The present embodiment provides a kind of preparation method of preferred OGS contact panel, and preparation method includes：
S1：Cleaning, cleans electro-conductive glass 4；Dirty, greasy dirt, the impurity etc. on electro-conductive glass 4 surface of ITO pattern will not carved
Remove and be dried.
S2：Resist coating, coating photoresist is on the electro-conductive glass 4 after cleaning.Photoresist is normal in ITO pattern engraving
With material, the present embodiment is using common photoresist.
S3：Dry, the electro-conductive glass 4 being coated with photoresist is dried.Drying temperature is：130℃
S4：Image exposure, with ultraviolet and film vertical irradiation photoresist surface, makes the photoresist of illuminated part occur
Reaction；The technological parameter being related in S4：Light energy：60-120MJ/CM2, the time：6-9S.
S5：Photoresist through light irradiation part is removed by development with alkali lye, retains the photoresist of irradiated portion, and plus
Gu photoresist film；The technological parameter being related in S5：Alkali lye can be：NaOH, weak base：0.05-0.2MOL/L, temperature：20 ± 3 degree,
Pressure：0.02-0.05KG, speed：5.5±2.5M/MIN.Allow the photoresist that development stays through high-temperature process, make photoresist solid
Change, temperature：120-150 degree, the time：20-30S.
S6：The ITO layer that unglazed photoresist covers is removed with acid solution, obtains ITO pattern by etching；Acid solution can be：37% concentration
Hydrochloric acid, with pure water 1:1 proportioning.
The technological parameter being related in S6：Acidity：3.5-6.5MOL/L, temperature：45 ± 5 degree, pressure：1-2KG, speed：0.8
±1.5M/MIN.It is dried after cleaning.
S7：Silk-screen black surround layer 2, the peripheral part silk-screen black surround layer 2 of ITO conducting film 3 lower surface that S6 step is obtained is black
Frame layer 2 has the transparent apertures 5 connecting with ITO conducting film 3；
S8：Silk-screened conductive pulp layer 6, the conductive paste bed of material 6 covers transparent apertures 5；
S9：Silk-screen silver paste, silver paste silk-screen connects FPC in the conductive paste bed of material 6, silver paste.
Wherein, S7 specifically includes step a and step b：
Step a：Silk-screen is once black, and in the peripheral part silk-screen black surround of ITO conducting film 3 lower surface, black surround has is led with ITO
The transparent apertures 5 of electrolemma 3 connection；
Step b：Silk-screen is secondary black, and silk-screen once, obtains satisfactory black again on the black surround surface obtaining in step a silk-screen
Frame layer 2.
Because the thickness of black surround layer 2 is difficult to reach requirement by a silk-screen, so silk-screen is it is ensured that black surround layer 2 at twice
Thickness and silk-screen quality.
Further, it is additionally provided with step c before step b after step a, before S9 after S8, also include step d；
Step c, silk-screen is just protected, and carries out bad inspection to visible area, it is to avoid operation before causes to visible area to damage.
Step d, silk-screen is used for covering the Protection glue of visible area, to protect visible area to be damaged in subsequent step, this step
Suddenly Back Word type Protection glue can be adopted, Back Word type Protection glue both can cover visible area and can cover black surround layer 2 region.
Carry out last cover rupture pressure disc and CNC engraving profile etc. to operate after silk-screen silver paste.
Above content is only presently preferred embodiments of the present invention, for those of ordinary skill in the art, according to the present invention's
Thought, all will change in specific embodiments and applications, and this specification content should not be construed as to the present invention
Restriction.
Claims (6)
1. a kind of OGS contact panel it is characterised in that：Including electro-conductive glass, the lower surface of described electro-conductive glass is to carve ITO pattern
ITO conducting film, the peripheral part silk-screen of ITO conducting film lower surface has black surround layer, black surround layer have some with ITO conducting film even
Logical transparent apertures, the lower surface silk-screen of black surround layer has the conductive paste bed of material, and the conductive paste bed of material is furnished with the silver paste connecting FPC,
The preparation method of this kind of OGS contact panel, described preparation method includes：
S1：Cleaning, the electro-conductive glass of ITO pattern is not carved in cleaning；
S2：Resist coating, coating photoresist is on the electro-conductive glass after cleaning；
S3：Dry, the electro-conductive glass being coated with photoresist is dried；
S4：Image exposure, with ultraviolet and film vertical irradiation photoresist surface, makes the photoresist of illuminated part occur anti-
Should；
S5：Photoresist through light irradiation part is removed by development with alkali lye, retains the photoresist of irradiated portion, and reinforces light
Photoresist film；
S6：The ITO conducting film that unglazed photoresist covers is removed with acid solution, obtains the ITO conducting film carving ITO pattern by etching；
S7：Silk-screen black surround layer, the lower surface peripheral part silk-screen black surround layer of the ITO conducting film that step S6 is obtained, black surround layer is opened
There are the transparent apertures connecting with ITO conducting film, a diameter of 0.2-0.3mm of described transparent apertures；
S8：Silk-screened conductive pulp layer, the lower surface silk-screened conductive pulp layer of the black surround layer obtaining in step S7, conductive paste bed of material lid
Live transparent apertures；
S9：Silk-screen silver paste, the lower surface silk-screen of the conductive paste bed of material is connected with the silver paste of FPC,
Wherein, described S7 specifically includes step a and step b：
Step a：Silk-screen is once black, and in the peripheral part silk-screen black surround of described ITO conducting film lower surface, black surround has is led with ITO
The transparent apertures of electrolemma connection；
Step b：Silk-screen is secondary black, and silk-screen once, obtains black surround layer again on the black surround surface obtaining in step a silk-screen.
2. according to claim 1 a kind of OGS contact panel it is characterised in that：Described electro-conductive glass is individual layer ITO conduction glass
Glass.
3. according to claim 1 a kind of OGS contact panel it is characterised in that：Described electro-conductive glass is double-deck ITO conduction glass
Glass.
4. according to claim 1 a kind of OGS contact panel it is characterised in that：The described conductive paste bed of material is carbon pulp layer, and carbon is starched
The thickness of layer is 3-7 μm.
5. according to claim 2 a kind of OGS contact panel it is characterised in that：The sheet resistance of described individual layer ITO electro-conductive glass is
40-60Ω/□.
6. according to claim 3 a kind of OGS contact panel it is characterised in that：Described bilayer ITO electro-conductive glass sheet resistance be
200-300Ω/□.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104035642A (en) * | 2014-06-16 | 2014-09-10 | 南京点面光电有限公司 | OGS (one glass solution) capacitive touch screen and preparation method thereof |
| CN104327857B (en) * | 2014-09-30 | 2016-01-13 | 江西省平波电子有限公司 | A kind of touch-screen etching solution and preparation method thereof |
| CN104571694A (en) * | 2014-12-24 | 2015-04-29 | 深圳力合光电传感股份有限公司 | OGS (one glass solution) touch screen and manufacturing process for OGS touch screen |
| CN112888174B (en) * | 2021-02-01 | 2022-07-05 | 广东志慧芯屏科技有限公司 | Preparation method of EPD display driving board |
| CN115220607B (en) * | 2022-07-27 | 2022-11-29 | 四川省利任元创新科技有限责任公司 | OGS capacitive touch screen and manufacturing method thereof |
| CN116514406A (en) * | 2023-04-26 | 2023-08-01 | 深圳市志凌伟业技术股份有限公司 | Preparation method of glass-based transparent conductive sheet |
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