CN103116426A - Composite material type touch screen and production technology thereof - Google Patents
Composite material type touch screen and production technology thereof Download PDFInfo
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- CN103116426A CN103116426A CN2012104724681A CN201210472468A CN103116426A CN 103116426 A CN103116426 A CN 103116426A CN 2012104724681 A CN2012104724681 A CN 2012104724681A CN 201210472468 A CN201210472468 A CN 201210472468A CN 103116426 A CN103116426 A CN 103116426A
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Abstract
The invention discloses a composite material type touch screen and a production technology of the composite material type touch screen. The production technology of the composite material type touch screen is characterized in that firstly, a transparent composite base plate which is formed by matching of upper layer polymethyl methacrylate (PMMA) and lower layer poly carbonate (PC) or polyethylene terephthalate (PET) materials is provided, then, the lower layer surface of the composite base plate is coated with shading materials according to a designed shape, indium tin oxide (ITO) materials are attached to the lower layer surface which is enabled to be a pattern with an induction function, finally, metal materials are attached to the lower surface of an induction layer, a running line connected with the pattern is formed, and the composite material type touch screen is obtained. According to the technical scheme, a fit technology is completely saved, the composite base plate made of composite materials plays a role in protecting and constructing an inductor, an optic adhesive layer and an ITO conducting film layer which are needed by the traditional fit technology are omitted, materials are saved, technology time is shortened, and defective rate is reduced. Meanwhile, luminousness is high, the thickness is small, the weight is light, and the composite material type touch screen and the production technology of the composite material type touch screen are especially suitable for a novel handheld portable device.
Description
Technical field
The present invention relates to a kind of human-computer interaction device and production method thereof, specifically a kind of touch screen and its production technology of having used compound substance.
Background technology
Touch screen is to obtain the parts of tremendous development in modern electronic equipment.No matter at fixed equipment or various intelligent handheld device, this display screen with touch controllable function extremely fit human body operation and thinking habit, directly perceived, fast, efficient.
Touch screen is the parts that coordinate display device, as differentiation, have multiple different type according to the principle of its touch-control sensing, comprise distortion resistance-type, inductance capacitance formula, infrared-type etc., what wherein, be widely used in portable, hand-held device is inductance capacitance formula touch screen.Its touch-control gesture information of inductance capacitance change capture that this inductance capacitance formula touch screen utilizes the diverse location of human body on touch screen to bring, thus operational feedback obtained, utilize the information indicating finishing man-machine interaction of screen itself.The characteristics of this touch screen are, itself have the zone of printing opacity, make the information of display device can not hinder output on the one hand, have on the other hand the transparency electrode that planar is used to form inductance capacitance, so, the transparent configuration that will inevitably have multilayer.Along with the development of portable, hand-held device, the inexorable trend of this inductance capacitance formula touch screen is: intensity thinner, lighter, preferably and lower cost.
At present, the common scheme of capacitive sensing touch screen of this class multilayer is to adopt transparent baseplate material, utilizes optical cement and other materials lamination coating to make, and this class attaching process is day by day ripe.But the technique of this applying has its defective that is difficult to go beyond: layering is many, has had influence on result of use on the one hand: light transmission is weakened, thickness is also limited to by limitation, weight; On the other hand, the number of plies causes the production cycle long more, complex process, and yield is low.As seen, the inductance capacitance formula touch-control skin of the sandwich construction variety of issue that its multilayer technology is brought that needs to be resolved hurrily.
Summary of the invention
For the problem that capacitive touch screen technique, material cost are high and yields is low of above-mentioned traditional sandwich construction, the present invention proposes a kind of compound substance formula touch screen and production technology thereof, and its technical scheme is as follows:
A kind of production technology of compound substance formula touch screen comprises:
Get the raw materials ready: the transparent composite base plate that provides upper strata PMMA to match with the PC of lower floor or PET material and consist of;
Shading coating: light screening material is coated the lower floor surface of this composite base plate according to design shape;
Inductive layer moulding: the ITO material is attached to this lower floor surface, makes it to become the pattern with inducing function; And
Wire moulding: metal material is attached to the lower surface of this inductive layer, and is shaped to the cabling that is connected with this pattern.
Preferred person as the technical program can have the improvement of following aspect:
In preferred embodiment, in described wire forming step, the mode of using the low temperature sputter in this inductive layer lower surface, then adopts the described cabling of etching method moulding with this metal material sputter.
In preferred embodiment, in described wire forming step, use the method for silver slurry printing, directly will have described this metal material of walking line morphology and be printed in the lower surface of this inductive layer.
In preferred embodiment, this shading application step is by micro-photographing process, and the described light screening material of black is applied also etching in the lower surface of this composite base plate.
In preferred embodiment, in this inductive layer forming step, the mode by sputter is covered in the ITO material lower surface of this composite base plate, and etches described pattern by micro-photographing process.
In preferred embodiment, after the step of this wire moulding, also comprise a cutting step, this cutting step adopts the CNC mode that described composite base plate is cut separation according to some junior unit shapes with it.
As the resulting product of this technique, its technical scheme is:
A kind of compound substance formula touch screen, it comprises following level from top to bottom in turn:
Composite base flaggy, the inner layer material plane of the PMMA that this composite base flaggy is the upper strata and lower floor are combined the composite transparent material that consists of; This inner layer material comprises PC or PET;
Light shield layer is coated under the inner layer material of this composite base flaggy, is shaped to the light-shielding pattern of this touch screen;
Inductive layer, its form is the ITO thin layer, has the pattern that consists of inductance capacitance; And
Conductor layer, its form are that low temperature sputter or silver slurry mode of printing are attached to the plain conductor under this inductive layer, have the cabling that is communicated with this inductive layer pattern.
In preferred embodiment, this composite base plate layer thickness scope is 0.8-2.0mm, and the PMMA thickness on this upper strata is not less than 30 μ m.
The beneficial effect that technical solution of the present invention is brought is:
1. this programme has been save attaching process fully; the composite base plate that compound substance is made has played the effect of protection and structure inductor simultaneously, has omitted necessary optics glue-line and the ITO conductive film layer of traditional approach attaching process, has saved material; shorten the process time, reduced fraction defective.Simultaneously, transmittance is high, and thickness is little, and is lightweight, is specially adapted to novel hand-held portable devices.
2. easily processing of composite base plate itself, for the traditional scheme of glass material, its processing technology is very simple, cuts easily, can realize fast with the CNC mode, and yields is high.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing embodiment:
Fig. 1 is the material preparation step schematic diagram of the embodiment of the present invention one;
Fig. 2 is embodiment one shading application step schematic diagram;
Fig. 3 is embodiment one inductive layer forming step schematic diagram;
Fig. 4 is embodiment one wire forming step schematic diagram;
Fig. 5 is the vertical view of embodiment one;
Fig. 6 is the partial top view of the embodiment of the present invention two.
Embodiment
Embodiment one:
As shown in Figure 1 to Figure 3, the schematic diagram of embodiments of the invention one;
Fig. 1 is the material preparation step of the present embodiment one.Composite base plate 10 is the form of pair of lamina, and its upper strata 11 is PMMA materials, and lower floor 12 is PC materials.The PMMA material is positioned at upper strata 11, is also the operating surface of whole touch screen, can have larger hardness, can reach 6H, plays the effect of good wear-resisting, anti-scratch; And the PC material of lower floor 12 is easy to fixedly the ITO material to be shaped to inductor.Simultaneously, P can coordinate with the PC material of lower floor 12 well as the PMMA material on upper strata 11, has good light transmission and physical strength.
As Fig. 2, the shading application step, the composite base plate 10 of getting ready is processed, make it to have a light shield layer 21. and consider that different touch screens need to coordinate different equipment, the form of its light shield layer 21 is ever-changing, the present embodiment is used for a portable smart machine, and its light shield layer is the form of a frame substantially, so be more common in the outer peripheral edge portion of lower floor 12.Here adopt micro-photographing process, directly carried out black light resistance coating in lower floor, then by etching, the dark border etching of needs reservation out, namely obtained designed light shield layer 21 patterns.
After above-mentioned shading application step is completed, enter inductive layer forming step shown in Figure 3.The purpose of this step be inductance capacitance pattern forming that the ITO material is consisted of at lower floor's 12 lower surfaces with light shield layer 21, obtain inductive layer 31.The present embodiment adopts micro-photographing process, with ITO material sputter in the lower surface of this lower floor 12, then pass through the soda acid etching, mold the inductance capacitance pattern of ITO material, as shown in Figure 5, the present embodiment is the single-point touch formula, so the inductive layer 31 that the ITO material is made has adopted the wedge shaped pattern that laterally runs through.
As Fig. 4, be the wire forming step, after above-mentioned inductive layer 31 forming steps, metal material is attached to the lower surface of this inductive layer, and is shaped to the cabling that is connected with this pattern.The mode that the present embodiment uses the low temperature sputter in inductive layer 31 lower surfaces, then adopts etching method to be shaped to cabling 41 the metal material sputter, and as shown in Figure 5, this cabling 41 has been communicated with the ITO material of inductive layer 31, and is used for connecting corresponding control circuit.
The thickness range of this composite base plate 10 of the present embodiment is 0.8mm, and the PMMA thickness on this upper strata is 40 μ m.
As seen; the basic scheme that the present embodiment is showed has been save attaching process fully; the composite base plate 10 that compound substance is made has played the effect of protection and structure inductor simultaneously; omitted necessary optics glue-line and the ITO conductive film layer of traditional approach attaching process; saved material; shorten the process time, reduced fraction defective.Simultaneously, it is only two-layer that the technical program light need to see through the person, is respectively composite base plate 10 and inductive layer 31, so transmittance is high, thickness is little, and is lightweight, is specially adapted to novel hand-held portable devices.
Embodiment two:
As shown in Figure 6, the local schematic top plan view of embodiments of the invention two.The present embodiment is a product of supporting multi-point touch.
The manufacturing process of the present embodiment two and embodiment one are similar, different is, in the wire forming step, used the method for silver-colored slurry printing, directly with metal material, according to shape and the distribution of cabling 41, be painted on surface under inductive layer 31, form the cabling 41. that can coordinate multi-point touch form inductive layer 31 in Fig. 6
Because the present embodiment is suitable for batch production, so complete above-mentioned technique on a slice composite base plate, obtain the touch screen of a plurality of junior unit forms on the same composite base plate, and then via a cutting step, some junior unit forms are cut separate, obtain final product.As seen, composite base plate itself is processing easily, and for the traditional scheme of glass material, its processing technology is very simple, cuts easily, can realize fast with the CNC mode, and yields is high.
The thickness range of this composite base plate 10 of the present embodiment is 2.8mm, and the PMMA thickness on this upper strata is 40 μ m.
The above, only for preferred embodiment of the present invention, therefore can not limit according to this scope of the invention process, the equivalence of namely doing according to the scope of the claims of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (8)
1. the production technology of a compound substance formula touch screen is characterized in that: comprising:
Get the raw materials ready: the transparent composite base plate that provides upper strata PMMA to match with the PC of lower floor or PET material and consist of;
Shading coating: light screening material is coated the lower floor surface of this composite base plate according to design shape;
Inductive layer moulding: the ITO material is attached to this lower floor surface, makes it to become the pattern with inducing function; And
Wire moulding: metal material is attached to the lower surface of this inductive layer, and is shaped to the cabling that is connected with this pattern.
2. a kind of production technology of compound substance formula touch screen according to claim 1, it is characterized in that: in described wire forming step, the mode of using the low temperature sputter in this inductive layer lower surface, then adopts the described cabling of etching method moulding with this metal material sputter.
3. a kind of production technology of compound substance formula touch screen according to claim 1 is characterized in that: in described wire forming step, use the method for silver slurry printing, directly will have described this metal material of walking line morphology and be printed in the lower surface of this inductive layer.
4. a kind of production technology of compound substance formula touch screen according to claim 1 is characterized in that: this shading application step is by micro-photographing process, and the described light screening material of black is applied also etching in the lower surface of this composite base plate.
5. a kind of production technology of compound substance formula touch screen according to claim 1, it is characterized in that: in this inductive layer forming step, mode by sputter is covered in the ITO material lower surface of this composite base plate, and etches described pattern by micro-photographing process.
6. the production work technique that according to claim 1 to 5, the described a kind of compound substance of any one is touch screen, it is characterized in that: after the step of this wire moulding, also comprise a cutting step, this cutting step adopts the CNC mode that described composite base plate is cut separation according to some junior unit shapes with it.
7. compound substance formula touch screen, it is characterized in that: it comprises following level from top to bottom in turn:
Composite base flaggy, the inner layer material plane of the PMMA that this composite base flaggy is the upper strata and lower floor are combined the composite transparent material that consists of; This inner layer material comprises PC or PET;
Light shield layer is coated under the inner layer material of this composite base flaggy, is shaped to the light-shielding pattern of this touch screen;
Inductive layer, its form is the ITO thin layer, has the pattern that consists of inductance capacitance; And
Conductor layer, its form are that low temperature sputter or silver slurry mode of printing are attached to the plain conductor under this inductive layer, have the cabling that is communicated with this inductive layer pattern.
8. a kind of compound substance formula touch screen according to claim 7, it is characterized in that: this composite base plate layer thickness scope is 0.8-2.0mm, and the PMMA thickness on this upper strata is not less than 30 μ m.
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Cited By (5)
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| CN103336613A (en) * | 2013-06-19 | 2013-10-02 | 深圳莱宝高科技股份有限公司 | Panel structure and manufacturing method thereof |
| CN104461098A (en) * | 2013-09-22 | 2015-03-25 | 联想(北京)有限公司 | Touch display device and manufacturing method thereof |
| CN106293245A (en) * | 2016-08-31 | 2017-01-04 | 焦祝根 | A kind of preparation method of nanometer touch film based on PET film |
| CN106445265A (en) * | 2016-10-14 | 2017-02-22 | 深圳市宇顺工业智能科技有限公司 | Capacitive touch screen and manufacturing method thereof |
| CN109367176A (en) * | 2017-11-08 | 2019-02-22 | 廖洪传 | A kind of anti-scratch transparent membrane, scratch resistant surface article and composite sheet |
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Owner name: FUJIAN BAOFA PHOTOELECTRONIC TECHNOLOGY GROUP CO., Free format text: FORMER OWNER: ZHANGZHOU BAOFA OPTICAL-ELECTRICAL TECHNOLOGY CO., LTD. Effective date: 20140410 |
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Effective date of registration: 20140410 Address after: Longhai City, Fujian province 363000 Zhangzhou City nine town Cai Keng Cun Cai Hang Industrial Zone East Block Applicant after: FUJIAN BAOFA OPTICAL-ELECTRICAL TECHNOLOGY GROUP CO., LTD. Address before: 363000 Fujian city of Zhangzhou province Longhai nine Hu Zhen Cai Keng Cun Cai Keng Industrial Park Applicant before: Zhangzhou Baofa Optical-electrical Technology Co., Ltd. |
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Application publication date: 20130522 |