CN203386193U - Touch screen sensing assembly - Google Patents
Touch screen sensing assembly Download PDFInfo
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- CN203386193U CN203386193U CN201320232498.5U CN201320232498U CN203386193U CN 203386193 U CN203386193 U CN 203386193U CN 201320232498 U CN201320232498 U CN 201320232498U CN 203386193 U CN203386193 U CN 203386193U
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- wiring lead
- touch screen
- transparency electrode
- sensing assembly
- substrate
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Abstract
The utility model discloses a touch screen sensing assembly, comprising a substrate and a plurality of transparent electrodes which are formed on the substrate, wherein the edges of the transparent electrodes are provided with extraction wires which are connected with the transparent electrodes; the extraction wires are formed by printing, exposing and developing sensitization conducting materials and are respectively connected with the transparent electrodes; the width of the transparent electrodes is 20-30micrometers; the interval of the extraction wires is 20-30micrometers. According to the touch screen sensing assembly, the extraction wires are obtained by printing, exposing and developing the sensitization conducting materials, the width and interval of the extraction wires can both reach 20-30micrometers, the lineation of the extraction wires is regular, and the design requirement of a narrow-frame touch screen in the market can be met.
Description
Technical field
The utility model relates to the touch-screen field, particularly relates to a kind of touch screen induction assembly.
Background technology
Because capacitive touch screen has more intuitive interactive mode, it is used as input end and is widely used in mobile phone and panel computer.Along with the demand (frame minimizes, and form maximizes) that people are aesthetic to mobile phone peace plate computer outward appearance is growing, narrow frame capacitive touch screen just slowly becomes a kind of Fashion Design trend.
The position relationship of capacitive touch screen frame and distribution as shown in Figure 1, in capacitance touch screen mobile phone 10, the side of its frame 104 has many distributions 102 that are connected with the conductive pattern of touch-screen visible area, therefore will realize the narrow limit of capacitive touch screen frame, wiring lead need accomplish that the live width line-spacing minimizes.
Usually, the distribution of conventional films capacitive touch screen adopts the mode that prints reticulated printing to make more, on described substrate, adopt silk-screen printing technique to produce some silver slurry circuit trace, its printing limit live width/line-spacing is 80 μ m/80 μ m, and easily produce sawtooth and linear irregular in actual production, processing procedure stability is not good enough, can not satisfying the market to the design requirement of narrow-frame touch panel.
The utility model content
Based on this, be necessary to provide a kind of distribution live width line-spacing little, linear neat touch screen induction assembly.
A kind of touch screen induction assembly, comprise substrate and be formed at a plurality of transparency electrodes on described substrate, the edge of described transparency electrode has the wiring lead be connected with described transparency electrode, described wiring lead forms and is connected with described a plurality of transparency electrodes respectively by printing, exposure and the development of conductive photoreceptor material, the width of described wiring lead is the 20-30 micron, and the spacing of described wiring lead is the 20-30 micron.
In embodiment, the material of described substrate is polyethylene terephthalate or polycarbonate therein.
In embodiment, the material of described transparency electrode is tin indium oxide conductive film, nano-silver thread or graphene conductive film therein.
Above-mentioned touch screen induction assembly obtains wiring lead by printing, exposure and the development of conductive photoreceptor material, the width of described wiring lead and spacing are the 20-30 micron, simultaneously, described wiring lead is linear neat, has met the design requirement of market to narrow-frame touch panel.
The accompanying drawing explanation
The location diagram that Fig. 1 is capacitive touch screen frame and distribution;
The touch screen induction assembly making method process flow diagram that Fig. 2 is an embodiment;
Fig. 3 be in an embodiment silver slurry monoblock be printed on transparency electrode and prebake conditions after schematic diagram;
Fig. 4 is the silver of the monoblock after exposure slurry schematic diagram in an embodiment;
Fig. 5 is touch screen induction modular construction schematic diagram in an embodiment;
Reference numeral: 10 capacitance touch screen mobile phones, 102 distributions, 104 frames, 202 transparency electrodes, 204 photosensitive silver slurries, the monoblock silver slurry after 206 exposures, 208 wiring leads.
Embodiment
Below in conjunction with the drawings and specific embodiments, the touch screen induction assembly is described in further detail.
As shown in Figure 5, a kind of touch screen induction assembly, comprise substrate and be formed at a plurality of transparency electrodes 202 on described substrate, the edge of described transparency electrode 202 has the wiring lead 208 be connected with described transparency electrode 202, described wiring lead 208 forms and is connected with described a plurality of transparency electrodes 202 respectively by printing, exposure and the development of conductive photoreceptor material, the width of described wiring lead is the 20-30 micron, and the spacing of described wiring lead is the 20-30 micron.
Described substrate is touch-screen field substrate commonly used, and the material of described substrate is polyethylene terephthalate (PET) or polycarbonate (PC).The material of described transparency electrode can be tin indium oxide conductive film, nano-silver thread or graphene conductive film.In the present embodiment, described transparency electrode 202 is ITO (Indium tin oxide, tin indium oxide) transparency electrode, its method for making can be for depositing one deck ito thin film on described substrate by magnetron sputtering, then adopt Etching technique to carry out figure processing to film, obtain ito transparent electrode.In the present embodiment, a plurality of transparency electrodes are arranged on described substrate, described transparency electrode is arranged in array.
The width of described wiring lead (being live width) is the 20-30 micron, described gap be the spacing (being line-spacing) of described wiring lead for the 20-30 micron, on the complete satisfying the market of the live width of described wiring lead and line-spacing to the design requirement of narrow limit touch-screen.
Use the touch-screen of above-mentioned touch screen induction assembly, the position of its wiring lead can be according to the flexible design that needs of touch screen design, and the side at touch-screen both can be designed in the position of wiring lead, also can design top or bottom at touch-screen.Because the live width/line-spacing of the wiring lead adopted is 20 μ m-30 μ m, so adopt the design of arbitrary above-mentioned wiring lead position, all can realize the design requirement of the narrow frame of touch-screen.
The method for making of above-mentioned touch screen induction assembly is:
As shown in Figure 2, the touch screen induction assembly making method of an embodiment comprises the following steps:
Step S210, the edge that the conductive photoreceptor material is printed on to transparency electrode forms integral body and is block conductive photoreceptor material.The conductive photoreceptor material is printed on to the edge of transparency electrode, conductive photoreceptor material now both can be just and the edge contact of transparency electrode, a part that also can the covering transparent electrode edge.In the present embodiment, the sub-fraction at conductive photoreceptor material covering transparent electrode 202 edges, better be connected the wiring lead 208 formed with transparency electrode 202, improve the stability that wiring lead 202 is connected with transparency electrode 208.Described conductive photoreceptor material is for having photosensitive conductive material, and in the present embodiment, the conductive photoreceptor material of employing is the photosensitive silver slurry, and its composition comprises silver-colored slurry, photosensitizer and organic solvent.After photosensitive silver slurry 204 is printed onto to the edge of transparency electrode 202, organic solvent also is present in photosensitive silver slurry 204, be unfavorable for contacting of photosensitive silver slurry 204 and transparency electrode 202, therefore in the present embodiment, photosensitive silver slurry 204 is printed onto behind the edge of transparency electrode 202 to the step that also has prebake conditions, prebake conditions can be used the equipment such as heated air circulation type drying oven, far infrared drying stove, the monoblock photosensitive silver is starched to 204 at 70-120 ℃ of lower prebake conditions 5-40 minute, make organic solvent evaporation, form dry coating, the monoblock silver slurry after prebake conditions as shown in Figure 3.It should be noted that, when bake out temperature during higher than 120 ℃, the be heated speed that causes diffusion of photosensitive silver slurry 204 is greater than the organic solvent volatilization and causes the speed of shrinking, and can cause widening of photosensitive silver slurry 204; When the prebake temperature, during lower than 70 ℃, the time of removing organic solvent can extend.Therefore, in the present embodiment, the condition of prebake conditions is chosen as temperature at 70 ℃-120 ℃, and when baking time is 5 minutes-40 minutes, the prebake effect of this scope is better.In the present embodiment, described photosensitive silver slurry is to adopt the mode of serigraphy to be printed on en bloc on the ito thin film that has completed Etching.In another embodiment, photosensitive silver slurry 204 also can, without pre-bake step, directly carry out next step exposure.
Step S220 sees through described monoblock conductive photoreceptor material the light shield exposure of predetermined pattern, the unitary conductive material after being exposed under illumination.Select suitable illumination condition, the light shield that sees through the wiring lead line pattern is exposed to the conductive photoreceptor material that is printed on the transparency electrode side, wherein, the light shield of wiring lead line pattern has two kinds of selection modes: a kind of is that the pattern of light shield is identical with the line pattern of wiring lead, after exposure, the part hidden without light shield in development phase will be dissolved be fallen, and the part hidden is retained, the formation wiring lead.Another kind is that the line pattern of the pattern of light shield and wiring lead is corresponding, after exposure, in the part of development phase exposure, remains the formation wiring lead, without the part of exposure, is dissolved by the developing.The selection of light shield and the illumination condition that exposes and select, the kind of developer solution etc. are relevant.
In the present embodiment, local wiring lead line pattern as shown in Figure 4 is 4 wiring leads that are parallel to each other, and it should be noted that, the monoblock silver slurry 206 after can causing during under-exposure exposing and the combination of transparency electrode 202 be precision not; If over-exposed, can cause again the development difficulty in later stage.Therefore, selecting in the present embodiment the ultraviolet light wavelength is 365 nanometers, and intensity of illumination is 40mW/cm
2, exposure energy is 100mJ/cm
2during-800mJ/cm, exposure effect is best.In another embodiment, also can use Halogen lamp LED, high-pressure sodium lamp, laser, metal halide lamp, black lamp and electrodeless etc. as exposure light source, exposure energy is 100mJ/cm
2-800mJ/cm.
Step S230, develop the unitary conductive material after described exposure, obtains the wiring lead of described transparency electrode, and the width of described wiring lead is the 30-80 micron, and the spacing of adjacent wiring lead is the 30-80 micron.Unitary conductive material after described exposure is after developing, and the wiring lead be connected with transparency electrode just reveals.In the present embodiment, as shown in Figure 5, after developing, the wiring lead 208 be connected with transparency electrode 202 just reveals, and has obtained the wiring lead 208 of transparency electrode 202.Developer solution can be the amine aqueous solutions such as the metal base aqueous solution such as NaOH, potassium hydroxide, sodium carbonate, sodium silicate and monoethanolamine, diethanolamine, triethanolamine.The developer solution that the present embodiment adopts is sodium carbonate liquor, due to the alkalescence of sodium carbonate a little less than, less to the corrosion of transparency electrode or substrate while therefore developing.In addition, if solution level is too low, developing powder is slow; Too highly can damage wiring lead, even come off, therefore selecting in the present embodiment the percentage by weight of sodium carbonate in developer is 0.2-0.4%.Simultaneously, development temperature is higher, and developing powder is faster.But excess Temperature, developer solution has dissolution to other parts; And temperature is when too low, developing powder is too slow, even stays cool.Reason to sum up, in the present embodiment, the spray pressure of developer solution is 0.5-2kg/cm
2, development time is 30 seconds-90 seconds, development temperature is 25-45 ℃.In another embodiment, can also wash the step neutralized with acid after development.
In the present embodiment, in order to make wiring lead, with transparency electrode 202, better be connected, also have curing step after development step, be about to wiring lead and toast 10 minutes-60 minutes under 130 ℃-600 ℃, programming rate preferentially is set as per minute and raises 20 ℃.In another embodiment, also can omit and solidify this step.
The manufacture craft of above-mentioned touch screen induction assembly is simple, compared to traditional gold-tinted fine-line processing procedure, has save metal coating, light blockage coating, and metal etch, the photoresistance strip step, with low cost.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (3)
1. a touch screen induction assembly, comprise substrate and be formed at a plurality of transparency electrodes on described substrate, it is characterized in that, the edge of described transparency electrode has the wiring lead be connected with described transparency electrode, described wiring lead is the wiring lead formed by the printing of conductive photoreceptor material, exposure and development, described wiring lead is connected with described a plurality of transparency electrodes respectively, and the width of described wiring lead is the 20-30 micron, and the spacing of described wiring lead is the 20-30 micron.
2. capacitive sensing assembly according to claim 1, is characterized in that, the material of described substrate is polyethylene terephthalate or polycarbonate.
3. capacitive sensing assembly according to claim 1, is characterized in that, the material of described transparency electrode is tin indium oxide conductive film, nano-silver thread or graphene conductive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320232498.5U CN203386193U (en) | 2013-05-02 | 2013-05-02 | Touch screen sensing assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320232498.5U CN203386193U (en) | 2013-05-02 | 2013-05-02 | Touch screen sensing assembly |
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| CN203386193U true CN203386193U (en) | 2014-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320232498.5U Expired - Lifetime CN203386193U (en) | 2013-05-02 | 2013-05-02 | Touch screen sensing assembly |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278765A (en) * | 2014-06-25 | 2016-01-27 | 深圳业际光电股份有限公司 | Manufacturing method for narrow-frame single-layer multipoint touch screen, and product thereof |
| CN106406592A (en) * | 2015-08-13 | 2017-02-15 | 深圳业际光电有限公司 | Fabrication method for narrow bezel type touch screen |
| CN112987984A (en) * | 2014-09-17 | 2021-06-18 | 宸鸿科技(厦门)有限公司 | Touch panel |
-
2013
- 2013-05-02 CN CN201320232498.5U patent/CN203386193U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278765A (en) * | 2014-06-25 | 2016-01-27 | 深圳业际光电股份有限公司 | Manufacturing method for narrow-frame single-layer multipoint touch screen, and product thereof |
| CN112987984A (en) * | 2014-09-17 | 2021-06-18 | 宸鸿科技(厦门)有限公司 | Touch panel |
| CN106406592A (en) * | 2015-08-13 | 2017-02-15 | 深圳业际光电有限公司 | Fabrication method for narrow bezel type touch screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210415 Address after: 231323 Building 1, precision electronics industrial park, Hangbu Town, Shucheng County, Lu'an City, Anhui Province Patentee after: Anhui jingzhuo optical display technology Co.,Ltd. Address before: 233 Kangyang Road, Huangdai Town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: SUZHOU OFILM TECH Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140108 |