CN203287877U - Capacitive screen - Google Patents
Capacitive screen Download PDFInfo
- Publication number
- CN203287877U CN203287877U CN2013202199152U CN201320219915U CN203287877U CN 203287877 U CN203287877 U CN 203287877U CN 2013202199152 U CN2013202199152 U CN 2013202199152U CN 201320219915 U CN201320219915 U CN 201320219915U CN 203287877 U CN203287877 U CN 203287877U
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- Prior art keywords
- capacitance plate
- inductive layer
- glass substrate
- touch
- flexible pcb
- Prior art date
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- Expired - Lifetime
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- 239000004020 conductor Substances 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 230000001939 inductive effect Effects 0.000 claims description 34
- 238000009413 insulation Methods 0.000 claims description 24
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000006698 induction Effects 0.000 abstract description 4
- 238000003754 machining Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 description 12
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- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
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- 239000003292 glue Substances 0.000 description 2
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical class [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- PVYBHVJTMRRXLG-UHFFFAOYSA-N 1,2,5-trichloro-3-(3,4-dichlorophenyl)benzene Chemical compound ClC1=CC(Cl)=C(Cl)C(C=2C=C(Cl)C(Cl)=CC=2)=C1 PVYBHVJTMRRXLG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003666 anti-fingerprint Effects 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
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Abstract
The utility model relates to a capacitive screen which is simple in structure and high in product machining accuracy. The capacitive screen comprises a touch screen body and a flexible printed circuit board, wherein the touch screen body is in electric connection with the flexible printed circuit board, the touch screen body comprises a glass substrate, a conductive induction layer and an insulating layer, the conductive induction layer is attached to the glass substrate, and the insulating layer is attached to the conductive induction layer. The capacitive screen further comprises a connecting conductor, and the connecting conductor penetrates through the insulating layer and is in electric connection with the flexible printed circuit board at the upper portion of the insulating layer. The capacitive screen is small in thickness and simple in structure, and the flexible printed circuit board is high in press fit accuracy.
Description
[technical field]
The utility model relates to a kind of capacitance plate, and is particularly a kind of simple in structure, the capacitance plate that processing precision of products is high.
[background technology]
Touch control device is subject to the favor of telecommunications industry gradually because of advantages such as its convenient operation, imaging are effective, function diversification, and is widely used on the products such as information system equipment, home appliance, communication apparatus, personal portable.
Follow in recent years touch-screen in the rapid emergence of communications industry, flourish in the mobile communication industry particularly, touch-screen becomes the first-selected product of imaging display apparatus now at one stroke.The touch-screen that utilization rate is the highest is mainly resistive touch screen and capacitance plate, but the user for controllability, the consideration of ease for use and appearance, can select capacitance plate as its best preferred unit mostly.
In the face of the powerful market outlook of capacitance plate, many manufacturers all try one's best can make a little breakthrough achievement on this equipment.General capacitance plate structure is the unitized construction of glass+glass or glass+sensor film, and the touch-screen product of this class formation is too thick, and overall dimensions is too large, and transparency is too low, and outlet sensitivity is low, and production run is complicated, and production cost is high.Take this a large amount of shortcomings and deposit, under the tide that touch technology develops rapidly, this series products is eliminated gradually.
In order to make up the shortcomings of conventional capacitance plate, people develop a kind of Novel capacitance screen that can realize the layer glass structure function of prior art on one deck glass substrate, and as shown in Figure 1, this product can lower the screen body thickness, reduce production costs, improve the product usability.This capacitance plate 300 comprises a glass substrate 301, one touch-control sensing district 303, one flexible PCB 305 and a touch-control chip 307 (also claiming touch-control IC), touch-control sensing district 303 is positioned at the middle part of glass substrate 301, flexible PCB 305 is connected with the conductive layer 308 in touch-control sensing district 303 by connecting wire 309, touch-control chip 307 is connected with flexible PCB 305, for the treatment of induced signal.The touch-screen of this class formation generally is referred to as OGS (One Glass Solution) touch-screen.Although the OGS touch-screen of this structure can lower screen thickness, make up many deficiencies of conventional touch-screen, but its circuit lead-out mode is with the monolateral or bilateral outlet of layer, each contact conductor all needs to be connected to flexible PCB 305 by connecting wire 309, easily cause flexible PCB 305 pins too much to increase the degree of difficulty of flexible PCB 305 pressure programmings, reduce the precision of product, yield is reduced greatly.
For solving the problems of conventional touch-screen, and the difficult problem of OGS touch-screen flexible PCB pressing, under the situation that the touch technology application is expanded rapidly, people close in the urgent need to a kind of flexible circuit board compression moulding that can effectively solve on the basis of OGS touch-screen the Novel capacitance screen of making a difficult problem.
[utility model content]
Large for overcoming existing capacitance plate thickness, complex structure, the problem of flexible PCB pressing difficulty, the utility model provides a kind of touch-screen thickness little, simple in structure, the Novel capacitance screen that flexible PCB pressing precision is high.
The scheme of the utility model technical solution problem is to provide a kind of capacitance plate, comprise touch screen body and a flexible PCB, this touch screen body and this flexible PCB are electrically connected, this touch screen body comprises a glass substrate, one conduction inductive layer and an insulation course, this conduction inductive layer is attached on this glass substrate, this insulation course is attached on this conduction inductive layer, this capacitance plate further comprises a bonding conductor, this bonding conductor runs through this insulation course, and on insulation course top and flexible PCB, is electrically connected.
Preferably, a plurality of connectivity ports are set around this conduction inductive layer, this each connectivity port is connected with the contact conductor of at least one conduction inductive layer.
Preferably, this bonding conductor is electrical connected with the conduction inductive layer at this place, connectivity port.
Preferably, arrange the electrode pattern that a plurality of argyle designs or strip pattern or horizontal, vertical triangle intersect on this conduction inductive layer.
Preferably, glass substrate comprises first surface and second surface, and first surface and second surface are two apparent surfaces of glass substrate, and the conduction inductive layer is attached on first surface.
Preferably, be coated with a layer insulating on the glass substrate first surface, this insulation course covers conduction inductive layer connectivity port on every side with exterior domain.
Preferably, be coated with screen body protective finish on the second surface of glass substrate.
Preferably, also be provided with in the periphery of this capacitance plate the touch-control chip that is electrical connected with flexible PCB.
Compared with prior art, layer glass structure before capacitive touch screen of the present utility model only replaces with the additional conduction inductive layer of a glass substrate, make the screen body thickness lower 50%, greatly saved cost of manufacture, but realize production, Improving The Quality of Products greatly on technique simultaneously.The most important thing is that capacitive touch screen of the present utility model need not to connect wire, only need to apply a bonding conductor on insulation course, the bonding conductor that is in insulation course top after the line of a plurality of electrode patterns is pooled together in connectivity port is connected, and flexible PCB carried out pressing at the end of bonding conductor and touch screen body get final product, save in existing capacitive touch screen need with a plurality of connection wires respectively with the complicated technology of flexible PCB phase pressing.So, reduce greatly the connection wire of electrode pattern, not only made processing technology simpler, also guaranteed simultaneously flexible PCB pressing precision.In addition, bonding conductor of the present utility model directly is coated on insulation course by the mode of silk-screen, and the one end is connected with bottom electrode pattern at the place, connectivity port, the direct pressing of one end and flexible PCB, its manufacture craft is very simple, easily realizes batched operation, and wiring is also very convenient.Capacitive touch screen signal connection of the present utility model is the place, connectivity port at the conduction inductive layer, and directly realize being electrically connected by bonding conductor between flexible PCB, the mode of building bridge before therefore need not adopting between its conduction inductive layer and flexible PCB is connected, avoid between each circuit while connecting being short-circuited phenomenon, improved the making yield of product.
[description of drawings]
Fig. 1 is the structural representation of existing OGS touch-screen.
Fig. 2 is the cross section cut-away illustration of the utility model capacitance plate.
Fig. 3 is the vertical view of capacitance plate shown in Figure 2.
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing and embodiment, the utility model are further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
See also Fig. 2 and Fig. 3, the touch screen body 101 of capacitance plate 100 of the present utility model comprises glass substrate 1011, conduction inductive layer 1013 and insulation course 1015.Glass substrate 1011 comprises first surface 1021 and second surface 1023, first surface 1021 and second surface 1023 are two apparent surfaces of glass substrate 1011, conduction inductive layer 1013 is attached on first surface 1021, this conduction inductive layer 1013 is ITO (full name: Indium Tin Oxides, Chinese: indium tin oxide) conductive film.Arrange the electrode pattern 1041 that a plurality of argyle designs or strip pattern or horizontal, vertical triangle intersect on this conduction inductive layer 1013.Near the integrated connectivity port 1043 of a plurality of these electrode patterns 1041 this conduction inductive layer 1013, each connectivity port 1043 correspondence is connected to a plurality of electrode wires of electrode pattern 1041, to conduct electricity inductive layer 1013 by connectivity port 1043 and be connected with touch-control chip 107, and the touching signals of human body be converted to electric signal and transfers to touch-control chip 107 by conduction inductive layer 1013 carry out signal analysis and processing.Be sent to again touch-control chip 107 after many strip electrodes congruence can being gathered together by connectivity port 1043, can obviously reduce the quantity of contact conductor, the difficulty of processing while reducing connection.
Be coated with a layer insulating 1015 on glass substrate 1011 first surfaces 1021, this insulation course 1015 will conduct electricity inductive layer 1013 connectivity port 1043 on every side with the whole covering of exterior domain, but 1043 positions, connectivity port are made as through hole on insulation course 1015, in order to electrode pattern 1041 is connected with outside touch-control chip 107 at this place.Main its insulation of this insulation course 1015, moistureproof effect with protecting connectivity port 1043, it generally adopts the dielectric ink material.
Also be provided with flexible PCB 105 and touch-control chip 107 in the periphery of this capacitance plate 100, this flexible PCB 105 is electrical connected with this touch-control chip 107, and flexible PCB 107 is used for the electric signal transmission of touch screen body 101 is processed to touch-control chip 107.This touch-control chip 107 can be supported the processing of individual layer multi-point touch, the most important thing is that this touch-control chip 107 can support a plurality of signal wires to coordinate the processing mode of a ground wire, can concentrate and be sent to touch-control chip 107 and unify to process by connectivity port 1043 after making many strip electrodes congruence of conduction inductive layer 1013 gather together.
Top at insulation course 1015 applies bonding conductor 103, and this bonding conductor 103 passes connectivity port 1043 and is electrical connected with the electrode pattern 1041 of insulation course 1015 lower zones.Wherein, each connectivity port 1043 corresponding being connected on lead-in wire corresponding on this bonding conductor 103 all.Afterwards, then be connected to by bonding conductor 103 on the pin of flexible PCB 105, realize that signal is from conduction induction 1013 transmission to flexible PCB 105.Because of the restriction of electric conductivity and color, the material more options of this bonding conductor 103 conduction tusche, but not the similar materials such as general silver paste printing ink and carbon paste.This conduction tusche is the electric conductivity black ink, is by general black ink and the potpourri of conductive silver glue, and wherein the content of black ink is 90%-99%, and the content of conductive silver glue is 1%-10%.
Flexible PCB 105 when with touch screen body 101, being electrically connected, only needing that flexible PCB 105 is carried out pressing at bonding conductor 103 and gets final product.Save in existing capacitance plate 300 need with a plurality of connection wires 309 respectively with the complicated technology of flexible PCB 305 phase pressings.
Can also apply anti-fingerprint brush applied coating on the second surface 1023 of glass substrate 1011, the membranaceous coating of some protection screen bodies such as radioresistance coating or anti-dazzle top layer processing layer.
In use, the second surface 1023 of finger touch glass substrate 1011, at this moment realize capacitive coupling between the electrode pattern 1041 of finger and conduction inductive layer 1013.Change according to the electric capacity of finger place electrode pattern 1041, can determine an absolute coordinate, and by bonding conductor 103, the signal of coordinate figure is sent to touch-control chip 107.During transmission, can first by connectivity port 1043, transmit signals to the bonding conductor 103 on insulation course 1015 tops, then by bonding conductor 103, be sent to flexible PCB 105, arrive finally in touch-control chip 107 and process.
Compared with prior art, layer glass structure before capacitance plate 100 of the present utility model only replaces with the additional conduction inductive layer 1013 of a glass substrate 1011, make the screen body thickness lower 50%, greatly saved cost of manufacture, but realize production, Improving The Quality of Products greatly on technique simultaneously.The most important thing is that capacitance plate 100 of the present utility model need not to connect wire, only need to apply a bonding conductor 103 on insulation course 1015, after the line of a plurality of electrode patterns 1041 is pooled together, 1043 bonding conductors 103 that are in insulation course 1015 tops are connected in connectivity port, and flexible PCB 105 carried out pressing at the end of bonding conductor 103 and touch screen body 101 get final product, save in existing capacitance plate need with a plurality of connection wires respectively with the complicated technology of flexible PCB phase pressing.So, reduce greatly the connection wire of electrode pattern 1041, not only made processing technology simpler, also guaranteed simultaneously flexible PCB 105 bonding accurcies.In addition, bonding conductor 103 of the present utility model directly is coated on insulation course 1015 by the mode of silk-screen, 1043 places are connected with bottom electrode pattern 1041 the one end in connectivity port, one end and the direct pressing of flexible PCB 105, its manufacture craft is very simple, easily realize batched operation, and wiring is also very convenient.Capacitance plate 100 signals connections of the present utility model are 1043 places, connectivity port at conduction inductive layer 1013, and directly realize being electrically connected by bonding conductor 103 between flexible PCB 105, therefore before need not adopting between its conduction inductive layer 1013 and flexible PCB 105, the mode of bridge formation is not connected, avoid between each circuit while connecting being short-circuited phenomenon, improved the making yield of product.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all any modifications of doing within principle of the present utility model, be equal to and replace and within improvement etc. all should comprise protection domain of the present utility model.
Claims (8)
1. capacitance plate, comprise touch screen body and a flexible PCB, this touch screen body and this flexible PCB are electrically connected, this touch screen body comprises a glass substrate, conduction inductive layer and an insulation course, and this conduction inductive layer is attached on this glass substrate, this insulation course is attached on this conduction inductive layer, it is characterized in that: this capacitance plate further comprises a bonding conductor, and this bonding conductor runs through this insulation course, and on insulation course top and flexible PCB, is electrically connected.
2. capacitance plate as claimed in claim 1 is characterized in that: a plurality of connectivity ports are set around this conduction inductive layer, and this each connectivity port is connected with the contact conductor of at least one conduction inductive layer.
3. capacitance plate as claimed in claim 2 is characterized in that: this bonding conductor is electrical connected with the conduction inductive layer at this place, connectivity port.
4. capacitance plate as claimed in claim 1, is characterized in that: arrange the electrode pattern that a plurality of argyle designs or strip pattern or horizontal, vertical triangle intersect on this conduction inductive layer.
5. capacitance plate as claimed in claim 1, it is characterized in that: glass substrate comprises first surface and second surface, and first surface and second surface are two apparent surfaces of glass substrate, and the conduction inductive layer is attached on first surface.
6. capacitance plate as claimed in claim 5 is characterized in that: be coated with a layer insulating on the glass substrate first surface, this insulation course covers connectivity port around conduction inductive layer with exterior domain.
7. capacitance plate as claimed in claim 5, is characterized in that: be coated with screen body protective finish on the second surface of glass substrate.
8. capacitance plate as claimed in claim 1, is characterized in that: also be provided with the touch-control chip that is electrical connected with flexible PCB in the periphery of this capacitance plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202199152U CN203287877U (en) | 2013-04-13 | 2013-04-13 | Capacitive screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202199152U CN203287877U (en) | 2013-04-13 | 2013-04-13 | Capacitive screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203287877U true CN203287877U (en) | 2013-11-13 |
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ID=49544232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202199152U Expired - Lifetime CN203287877U (en) | 2013-04-13 | 2013-04-13 | Capacitive screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203287877U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103902125A (en) * | 2014-03-28 | 2014-07-02 | 上海交通大学 | Projected capacitive touch panel on basis of single-layer touch sensors and positioning method implemented by projected capacitive touch panel |
| CN109460694A (en) * | 2017-09-06 | 2019-03-12 | 蓝思科技（长沙）有限公司 | Fingerprint sensor, intelligent terminal and fingerprint sensor package method |
-
2013
- 2013-04-13 CN CN2013202199152U patent/CN203287877U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103902125A (en) * | 2014-03-28 | 2014-07-02 | 上海交通大学 | Projected capacitive touch panel on basis of single-layer touch sensors and positioning method implemented by projected capacitive touch panel |
| CN109460694A (en) * | 2017-09-06 | 2019-03-12 | 蓝思科技（长沙）有限公司 | Fingerprint sensor, intelligent terminal and fingerprint sensor package method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Capacitive screen mobile terminal and screen control method and device thereof Effective date of registration: 20200224 Granted publication date: 20131113 Pledgee: Baiyun branch of Guiyang Bank Co.,Ltd. Pledgor: GUIZHOU DAVOS OPTOELECTRONIC Co.,Ltd. Registration number: Y2020980000303 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20131113 Pledgee: Baiyun branch of Guiyang Bank Co.,Ltd. Pledgor: GUIZHOU DAVOS OPTOELECTRONIC Co.,Ltd. Registration number: Y2020980000303 |