CN202771390U - Sandwich type piezoelectric touch screen - Google Patents
Sandwich type piezoelectric touch screen Download PDFInfo
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- CN202771390U CN202771390U CN 201220392426 CN201220392426U CN202771390U CN 202771390 U CN202771390 U CN 202771390U CN 201220392426 CN201220392426 CN 201220392426 CN 201220392426 U CN201220392426 U CN 201220392426U CN 202771390 U CN202771390 U CN 202771390U
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- touch screen
- type piezoelectric
- piezoelectric
- thin film
- piezoelectric element
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Abstract
The utility model discloses a sandwich type piezoelectric touch screen which comprises a base plate and an outer positioning frame used for fixing the base plate. An upper flexible thin film, a piece type piezoelectric element and a lower flexible thin film are arranged in sequence on the back side of the base plate. The surfaces of the upper flexible thin film and the lower flexible thin film are respectively provided with an array type thin film conductive circuit. An upper surface and a lower surface of the piece type piezoelectric element are respectively provided with a top electrode and a bottom electrode. The piezoelectric property of the piezoelectric element is relatively high (particularly, the property of existing ordinary lead-bearing piezoelectric ceramic is more than a dozen of times higher than the property of an existing piezoelectric thin film with the best property). A rather small force exerted on the screen and rather small deformation of the screen is caused, and therefore output of relatively large electric signals is achieved. The problem of insufficient sensitivity of the piezoelectric touch screen can be well resolved. The sandwich type piezoelectric touch screen is high in sensitivity, stability and reliability. The piezoelectric touch screen has the advantages of being creative in structure, low in production cost, good in property and the like.
Description
Technical field
The utility model relates to the touch screen technology field, particularly a kind of sandwich type piezoelectric touch screen.
Background technology
Along with the development of infotech, man-machine mutual friendship or thing machine hand over mode also not to be confined to the traditional approachs such as mouse, keyboard, display mutually.More convenience, fast, mode is affecting our life intuitively, wherein touch-screen is as one of the most practical novel man-machine mutual friendship or mutually friendship mode of thing machine, obtaining rapidly development over nearly 20 years, " but the piezoelectric touch screen of collapsible plastic deformation " (application number: 201110308151.X) piezoelectric property because of employed piezoelectric membrane is low in the patent, therefore need the power larger to the screen effect, thereby make screen produce larger deformation and just can export a small amount of electric signal, so the sensitivity meeting of this touch-screen existing problems.
Summary of the invention
In order to overcome defects, the sandwich type piezoelectric touch screen that the utility model provides a kind of brand-new piezoelectricity touch sensing technology to develop.
The utility model for the technical scheme that solves its technical matters and adopt is: a kind of sandwich type piezoelectric touch screen, comprise substrate and be used for the outside fix frame of fixing base, the back side of described substrate is provided with fexible film, chip type piezoelectric element and lower fexible film successively, array film conducting channel is contained on described upper fexible film and lower fexible film surface, and the upper and lower surface of described chip type piezoelectric element is respectively equipped with top electrode and bottom electrode.
As further improvement of the utility model, described chip type piezoelectric element profile is circle, annular, the square or rectangular with regular shape.
As further improvement of the utility model, described chip type piezoelectric element is for containing lead piezoelectric ceramics or leadless piezoelectric ceramics or containing lead piezoelectric ceramics and organic compound substance or leadless piezoelectric ceramics and organic compound substance are made.
As further improvement of the utility model, described upper fexible film and lower fexible film are organic film, and the array film conducting channel on described upper fexible film and the lower fexible film is that conducting metal is made.
Principle of work of the present utility model is: when substrate front side is subject to acting force, the substrate deformation (size of acting force determines the size of Bending Deformation amplitude) that will bend, this deformation will force the piezoelectric element at substrate back that mechanical deformation correspondingly occurs, because direct piezo electric effect will produce electric charge on the piezoelectric element surface electrode.By force position and amount of force are judged in the detection of charge generation position and size, thereby can realize accurately and rapidly that man-machine mutual friendship or thing machine hand over ability mutually.
The beneficial effects of the utility model are:
Compare with traditional capacitance plate and touch screens, piezoelectric touch screen has following several respects significant advantage:
1, nonbinary response: the position that piezoelectric type touch screen not only can the perception contact, can also make response to this position amount of force, acting force variation characteristic, greatly improved the efficient that man-machine mutual friendship or thing machine are handed over mutually.
2, material and the shape of contact object are not had specific (special) requirements: because piezoelectric touch screen is based on direct piezo electric effect, no matter with the object of any material or any shape to the screen effect, can make response; And and unlike traditional capacitance screen or touch screens, requiring contact must be nonisulated plane or tip and hard object body.
3, good stability: because chip type piezoelectric element has the characteristics such as high, the good reproducibility of stability and life-span be long, therefore can greatly improve the stability of touch-screen.
4, low cost: piezoelectric touch screen is simple in structure, extremely makes things convenient for the mass manufacturing, and various component materials can low-cost production.
And relatively present piezoelectric type touch screen, the piezoelectric property of the piezoelectric element that uses in the utility model higher (particularly the at present common performance that contains the existing best piezoelectric membrane of performance of lead piezoelectric ceramics Performance Ratio exceeds tens times), by the power very little to the screen effect, make screen produce very little deformation, just can realize exporting larger electric signal.Thereby this patent can well solve the problem of piezoelectric touch screen insufficient sensitivity, this sandwich piezoelectric touch screen of the present utility model not only has higher sensitivity, also have very high stability and reliability, this piezoelectric touch screen has the characteristics such as structure innovation, low cost of manufacture and excellent performance, therefore it has the market competitiveness, and very easily form batch productionization.
Description of drawings
Fig. 1 is cross sectional representation of the present utility model;
Fig. 2 is the upward view (concealing the outside fix frame) of Fig. 1;
Fig. 3 is stereographic map of the present utility model (concealing the outside fix frame);
Fig. 4 is the decomposing schematic representation (concealing the outside fix frame) of Fig. 3.
Embodiment
In order to deepen understanding of the present utility model, the utility model is described in further detail below in conjunction with embodiment and accompanying drawing, and this embodiment only is used for explaining the utility model, does not consist of the restriction to the utility model protection domain.
Fig. 1 has shown a kind of embodiment of a kind of sandwich type piezoelectric touch screen of the utility model, comprise substrate 1 and be used for the outside fix frame 2 of fixing base 1, the back side of described substrate 1 is provided with fexible film 3, chip type piezoelectric element 4 and lower fexible film 5 successively, array film conducting channel is contained on described upper fexible film 3 and lower fexible film 5 surfaces, and the upper and lower surface of described chip type piezoelectric element 4 is respectively equipped with top electrode and bottom electrode.
Fexible film 3(face contains array film conducting channel up and down) material is the PET film, is of a size of: 50mm * 60mm * 0.07mm, its surface exists by 16 Φ 5.5mm * 0.002mm copper films of 4 * 4 array arrangements; Chip type piezoelectric element (containing the upper and lower surface electrode) 4 is the PZT potsherd, and be of a size of: Φ 6.5mm * 0.15mm, electrode is: the fine silver electrode for preparing Φ 5.8mm * 0.003mm by high temperature burning infiltration method.Chip type piezoelectric element (containing the upper and lower surface electrode) 4 requirements are 16, chip type piezoelectric element (containing the upper and lower surface electrode) 4 is bonded in by two component cements, between the lower fexible film (face contains array film conducting channel) 5, and the fexible film that is bonded with chip type piezoelectric element (containing the upper and lower surface electrode) 4 is bonded in substrate 1 back by two component cements, when the front of described substrate 1 is subject to acting force, can produce in the relevant position Bending Deformation, thereby force the piezoelectric element of this below, position that corresponding deformation occurs, because direct piezo electric effect, produce electric charge on the piezoelectric element upper and lower surface electrode, then by the film conducting channel on the fexible film with it charge signal is led in the external test circuitry respectively, and pass through computational analysis and judge force position and amount of force, thereby can be accurate, realize that fast man-machine mutual friendship or thing machine hand over ability mutually.
Claims (4)
1. sandwich type piezoelectric touch screen, comprise substrate (1) and be used for the outside fix frame (2) of fixing base (1), it is characterized in that: the back side of described substrate (1) is provided with fexible film (3), chip type piezoelectric element (4) and lower fexible film (5) successively, array film conducting channel is contained on described upper fexible film (3) and lower fexible film (5) surface, and the upper and lower surface of described chip type piezoelectric element (4) is respectively equipped with top electrode and bottom electrode.
2. sandwich type piezoelectric touch screen according to claim 1, it is characterized in that: described chip type piezoelectric element (4) profile is circle, annular, the square or rectangular with regular shape.
3. sandwich type piezoelectric touch screen according to claim 1 is characterized in that: described chip type piezoelectric element (4) is for containing lead piezoelectric ceramics or leadless piezoelectric ceramics or containing lead piezoelectric ceramics and organic compound substance or leadless piezoelectric ceramics and organic compound substance are made.
4. sandwich type piezoelectric touch screen according to claim 1, it is characterized in that: described upper fexible film (3) and lower fexible film (5) are organic film, and the array film conducting channel on described upper fexible film (3) and the lower fexible film (5) is that conducting metal is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392426 CN202771390U (en) | 2012-08-09 | 2012-08-09 | Sandwich type piezoelectric touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220392426 CN202771390U (en) | 2012-08-09 | 2012-08-09 | Sandwich type piezoelectric touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202771390U true CN202771390U (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220392426 Expired - Lifetime CN202771390U (en) | 2012-08-09 | 2012-08-09 | Sandwich type piezoelectric touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202771390U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102819351A (en) * | 2012-08-09 | 2012-12-12 | 昆山攀特电陶科技有限公司 | Sandwich-type piezoelectric touch screen |
| WO2016065800A1 (en) * | 2014-10-31 | 2016-05-06 | 京东方科技集团股份有限公司 | Touch screen and manufacturing method therefor, and display panel |
-
2012
- 2012-08-09 CN CN 201220392426 patent/CN202771390U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102819351A (en) * | 2012-08-09 | 2012-12-12 | 昆山攀特电陶科技有限公司 | Sandwich-type piezoelectric touch screen |
| WO2016065800A1 (en) * | 2014-10-31 | 2016-05-06 | 京东方科技集团股份有限公司 | Touch screen and manufacturing method therefor, and display panel |
| US10254874B2 (en) | 2014-10-31 | 2019-04-09 | Boe Technology Group Co., Ltd. | Touch screen, method of manufacturing the same and display panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU PANT PIEZOELECTRIC TECH. CO., LTD. Free format text: FORMER NAME: KUNSHAN PANTE ELECTRIC POTTERY TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Suzhou City, Jiangsu province 215300 Kunshan City Road No. 385 Patentee after: SUZHOU PANT PIEZOELECTRIC TECH Co.,Ltd. Address before: Suzhou City, Jiangsu province 215300 Kunshan City Road No. 385 Patentee before: KUNSHAN PANT PIEZOELECTRIC TECH Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
|
| CX01 | Expiry of patent term |