CN201805415U - Indium tin oxide (ITO) thin-film capacitor touch key - Google Patents
Indium tin oxide (ITO) thin-film capacitor touch key Download PDFInfo
- Publication number
- CN201805415U CN201805415U CN2010205258159U CN201020525815U CN201805415U CN 201805415 U CN201805415 U CN 201805415U CN 2010205258159 U CN2010205258159 U CN 2010205258159U CN 201020525815 U CN201020525815 U CN 201020525815U CN 201805415 U CN201805415 U CN 201805415U
- Authority
- CN
- China
- Prior art keywords
- ito thin
- thin film
- protection film
- ito
- key
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000010409 thin film Substances 0.000 title claims abstract description 35
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 title abstract description 3
- 239000003990 capacitor Substances 0.000 title abstract 4
- 239000010408 film Substances 0.000 claims abstract description 19
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 2
- FPWNLURCHDRMHC-UHFFFAOYSA-N 4-chlorobiphenyl Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1 FPWNLURCHDRMHC-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000036039 immunity Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- -1 indium tin metal oxide Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses an indium tin oxide (ITO) thin-film capacitor touch key which comprises a surface protection film, an ITO thin-film layer, a flexible printed circuit (FPC) board, a bottom protection film and a main circuit used for completing a function of the capacitor touch key, wherein the surface protection film and the bottom protection film are made of insulating material; the surface protection film, the ITO thin-film layer, the FPC board and the bottom protection film are arranged and overlapped in sequence; the ITO thin-film layer is connected with a lead on the FPC board; and the lead on the FPC board is connected with the external main circuit 5. The ITO thin-film capacitor touch key has the advantages of high sensitivity and strong anti-interference performance. Furthermore, the key is transparent in appearance, and can be changed by being bended, folded and the like, so that the appearance design of the key has more innovation space, and the demand that the key of the existing electronic product is light and attractive can be met.
Description
Technical field
The utility model relates to a kind of touch key-press, relates in particular to a kind of ito thin film capacitance touch button, belongs to the electronic key technical field.
Background technology
Chemically, ITO is the abbreviation of Indium Tin Oxides.Ito thin film has the good conductivity and the transparency as the nano indium tin metal oxide, can block harmful electron radiation, ultraviolet ray and far infrared.Therefore, ito thin film is sprayed on glass, on plastics and the electronic display after, utilize its conductivity and the transparency can constitute touch function, have radiation proof and antiultraviolet, ultrared function simultaneously.In oxide conductive film, to mix S
nI
N2O
3(ITO) transmitance of film is the highest best with electric conductivity, and etches trickle figure easily in acid solution. and its light transmittance can reach more than 90%.ITO film light transmittance and resistance are respectively by I
N2O
3With S
N2O
3Ratio control common S
N2O
3: I
N2O
3=1: 9, be used for contact panel, touch-screen, cold light film etc. more.
The button of the present mechanical structure of using always has easy to wear, and complexity is installed, and is subjected to shortcomings such as such environmental effects such as temperature, humidity, dust are bigger, and its production cost height, and the technological requirement complexity is difficult to satisfy present electronic product button demand frivolous, attractive in appearance.
Along with industry is constantly released electronic component, the integrated chip with super low-power consumption, people have also grasped the method for designing of super low-power consumption Circuits System, ito thin film and FPC flexible PCB are used in combination, make the version of key device become varied, have wide development space.
The utility model content
The purpose of this utility model is to provide a kind of ito thin film capacitance touch button, adopts ito thin film as the electrode in the capacitance touch button, makes full use of the advantage that the ito thin film transmitance is high and conduct electricity very well.
The purpose of this utility model is achieved by the following technical programs:
A kind of ito thin film capacitance touch button comprises surface protection film 1, ito thin film layer 2, FPC flexible PCB 3, bottom diaphragm 4 and finishes the main circuit 5 of capacitance touch keypress function.Wherein surface protection film 1, bottom diaphragm 4 are made by insulating material; described surface protection film 1, ito thin film layer 2, FPC flexible PCB 3, bottom diaphragm 4 are arranged in order and are formed by stacking; going between on described ito thin film layer 2 and the FPC flexible PCB 3 is connected, and lead-in wire is connected with the main circuit 5 of outside on the FPC flexible PCB 3.
The purpose of this utility model can also further realize by following technical measures:
Aforesaid ito thin film capacitance touch button, wherein main circuit 5 is connected to form successively by oscillating circuit 6, testing circuit 7 and microprocessor 8, and the lead-in wire of described FPC flexible PCB 3 connects the input of oscillating circuit 6.
Aforesaid ito thin film capacitance touch button, wherein ito thin film layer 2 is divided into several key areas 9 and ground area 10, key area 9 etches various identification patterns, 10 of itself and ground areas are isolated and leave an intersegmental crack, key area 9 and ground area 10 prolong with silver slurry line respectively, are connected to main circuit 5.
Compared with prior art, the beneficial effects of the utility model are: ito thin film capacitance touch button has advantage highly sensitive, strong interference immunity.And its button profile is transparent, can carry out bending, variation such as folding, makes the appearance design of this kind button that innovative space more be arranged, and can satisfy present electronic product button demand frivolous, attractive in appearance.
Description of drawings
Fig. 1 is a structure chart of the present utility model;
Fig. 2 is the circuit structure diagram of main circuit;
Fig. 3 is the distribution map of ito thin film layer.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the utility model comprises surface protection film 1, ito thin film layer 2, FPC flexible PCB 3, bottom diaphragm 4 and finishes the main circuit 5 of capacitance touch keypress function.Wherein surface protection film 1, bottom diaphragm 4 are made by insulating material; described surface protection film 1, ito thin film layer 2, FPC flexible PCB 3, bottom diaphragm 4 are arranged in order and are formed by stacking; going between on described ito thin film layer 2 and the FPC flexible PCB 3 is connected, and lead-in wire is connected with the main circuit 5 of outside on the FPC flexible PCB 3.
As shown in Figure 2, the utility model main circuit 5 is connected to form successively by oscillating circuit 6, testing circuit 7 and microprocessor 8, and the lead-in wire of described FPC flexible PCB 3 connects the input of oscillating circuit 6.
As shown in Figure 3, ito thin film layer 2 is divided into several key areas 9 and ground area 10, and key area 9 etches various identification patterns, and its size is corresponding with thumbnail size, to reach best sensitivity, realizes good sensing.10 of key area 9 and ground areas completely cut off and leave an intersegmental crack, and key area 9 and ground area 10 prolong with silver slurry line respectively, are connected to main circuit 5.
Method for designing of the present utility model adopts the mode of staggered form, can reduce influencing each other between the button like this.Because cover layer is thinner, so need that good isolation is arranged between the button.In the wiring of FCB plate, ground area and key area are positioned at the same side of printed board, adopt the 0.5mm gap size, can make the field penetration cover layer well.When pushing button, the electric capacity that electric capacity between human body and ground and key area 9 and ground area are 10 is superimposed, forms relation in parallel, thereby forms the transfer of electric charge, outputs to main circuit 5 by silver slurry line.Deliver to microprocessor 8 after main circuit carries out the signal amplification and detects, the signal after microprocessor 8 is handled is passed to user side again, makes corresponding action.
The utility model has been overturned the method for designing of conventional keys, has prolonged the useful life of button greatly.The beneficial effects of the utility model are that ito thin film capacitance touch button has advantage highly sensitive, strong interference immunity.And the button profile is transparent, can carry out bending, variation such as folding, make the appearance design of button that innovative space more be arranged, make the appearance design of button that innovative space more be arranged, can change simple-minded, the loaded down with trivial details outward appearance of traditional design, give novel unique, simple generous experience.This kind button can be widely used in consumer electronics product, for example products such as LCDTV/Monitor, DPF, small household appliances, home audio, educational, toys, PC periphery class, hand-held communication class.
In addition to the implementation, the utility model can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.
Claims (3)
1. ito thin film capacitance touch button; it is characterized in that; comprise surface protection film (1); ito thin film layer (2); FPC flexible PCB (3); bottom diaphragm (4) and finish the main circuit (5) of capacitance touch keypress function; described surface protection film (1); bottom diaphragm (4) is made by insulating material; described surface protection film (1); ito thin film layer (2); FPC flexible PCB (3); bottom diaphragm (4) is arranged in order and is formed by stacking; described ito thin film layer (2) is gone up lead-in wire with FPC flexible PCB (3) and is connected, and FPC flexible PCB (3) is gone up lead-in wire and is connected with the main circuit (5) of outside.
2. ito thin film capacitance touch button as claimed in claim 1, it is characterized in that, described main circuit (5) is connected to form successively by oscillating circuit (6), testing circuit (7) and microprocessor (8), and the lead-in wire of described FPC flexible PCB (3) connects the input of oscillating circuit (6).
3. ito thin film capacitance touch button as claimed in claim 1 or 2, it is characterized in that, described ito thin film layer (2) is divided into several key areas (9) and ground area (10), key area (9) etches various identification patterns, isolated and leave an intersegmental crack between itself and ground area (10), key area (9) and ground area (10) prolong with silver slurry line respectively, are connected to main circuit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205258159U CN201805415U (en) | 2010-09-10 | 2010-09-10 | Indium tin oxide (ITO) thin-film capacitor touch key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205258159U CN201805415U (en) | 2010-09-10 | 2010-09-10 | Indium tin oxide (ITO) thin-film capacitor touch key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201805415U true CN201805415U (en) | 2011-04-20 |
Family
ID=43874914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205258159U Expired - Fee Related CN201805415U (en) | 2010-09-10 | 2010-09-10 | Indium tin oxide (ITO) thin-film capacitor touch key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201805415U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314759A (en) * | 2011-08-02 | 2012-01-11 | 南京物联传感技术有限公司 | Simple wireless touching-type intelligent household control terminal |
| CN105451440A (en) * | 2015-12-09 | 2016-03-30 | 惠而浦（中国）股份有限公司 | Circuit board for achieving rotating touch |
| CN111458570A (en) * | 2020-05-06 | 2020-07-28 | 上海福太隆汽车电子科技有限公司 | Device and method for detecting capacitance value of touch membrane in touch panel |
| CN115967392A (en) * | 2023-01-31 | 2023-04-14 | 厦门阿匹斯智能制造系统有限公司 | An ITO membrane analog key waterproof mistouch device |
-
2010
- 2010-09-10 CN CN2010205258159U patent/CN201805415U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102314759A (en) * | 2011-08-02 | 2012-01-11 | 南京物联传感技术有限公司 | Simple wireless touching-type intelligent household control terminal |
| CN105451440A (en) * | 2015-12-09 | 2016-03-30 | 惠而浦（中国）股份有限公司 | Circuit board for achieving rotating touch |
| CN111458570A (en) * | 2020-05-06 | 2020-07-28 | 上海福太隆汽车电子科技有限公司 | Device and method for detecting capacitance value of touch membrane in touch panel |
| CN115967392A (en) * | 2023-01-31 | 2023-04-14 | 厦门阿匹斯智能制造系统有限公司 | An ITO membrane analog key waterproof mistouch device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20160910 |