CN203444459U - Novel multi-point resistive touch screen, detection circuit and switching device - Google Patents
Novel multi-point resistive touch screen, detection circuit and switching device Download PDFInfo
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- CN203444459U CN203444459U CN201320422502.4U CN201320422502U CN203444459U CN 203444459 U CN203444459 U CN 203444459U CN 201320422502 U CN201320422502 U CN 201320422502U CN 203444459 U CN203444459 U CN 203444459U
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Abstract
The utility model discloses a novel multi-point resistive touch screen, a detection circuit and a switching device. The multi-point resistive touch screen comprises a display screen used for displaying a switch and showing an icon, an inner layer transparent ITO thin film and an outer layer transparent ITO thin film. One side, deviating from transparent isolation points, of the outer layer transparent ITO thin film is provided with a transparent scratch-resistant plastic layer. The transparent isolation points are arranged between the inner layer transparent ITO thin film and the outer layer transparent ITO thin film. Multiple discontinuous pressing ITO conductive areas are correspondingly arranged on the inner layer transparent ITO thin film and the outer layer transparent ITO thin film. Conductive ITOs are arranged on the pressing ITO conductive areas. The novel multi-point resistive touch screen, the detection circuit and the switching device have following beneficial effects: due to the fact that the multiple discontinuous pressing ITO conductive areas are correspondingly arranged on the inner layer transparent ITO thin film and the outer layer transparent ITO thin film, the pressing ITO conductive areas arranged on the inner layer transparent ITO thin film and the outer layer transparent ITO thin film are connected so that electricity is achieved; and the detection circuit is composed of a controller and a discrete component which is low in cost so that cost of a resistive screen is lowered and a driving mode of the resistive screen is simplified.
Description
Technical field
The utility model relates to resistive touch screen technology field, in particular, relates to a kind of novel multipoint resistance type touch screen, testing circuit and switchgear.
Background technology
Along with increasing severely with day of multimedia information inquiry, people more and more touch touch-screen, utilize this technical user as long as just can realize host service function with icon or word that finger is touched on display screen gently, thereby make man-machine interaction more direct.In live and work, the range of application of touch-screen is boundless, relates to the aspects such as inquiry, office, Industry Control, military commanding, electronic game, choosing song or selecting dish, multimedia teaching and real estate presell of public information.
At present, common resistive touch screen is a kind of touch screens of dot matrix, mainly by X layer ito thin film, Y layer ito thin film, resistive touch screen, drives chip and controller MCU to form, X layer ito thin film and Y layer ito thin film mutually insulated.The ultimate principle of resistive touch screen: when finger touch screen, usually the two-layer ito thin film conductive layer of mutually insulated just contacts on position, touch point, because conductive layer is wherein connected the 5V even voltage field of Y direction, make the voltage of detecting layer become non-zero from zero, MCU carries out A/D conversion after detecting this connection signal, and the magnitude of voltage obtaining is compared with 5V, can obtain the Y-axis coordinate of touch point, in like manner, can obtain X-axis coordinate.Yet, the resistive touch screen of realizing according to above-mentioned principle, it need to use special-purpose driving chip to drive controller MCU, causes its cost to increase, and type of drive is complicated, is not easy to realize.
Therefore, providing a kind of novel multipoint resistance type touch screen, testing circuit and switchgear, to reduce the cost of touch screens, simplify the type of drive of touch screens, is those skilled in the art's problem demanding prompt solutions.
Utility model content
In view of this, the utility model provides a kind of novel multipoint resistance type touch screen, testing circuit and switchgear, to solve in prior art, because needs are used special-purpose driving chip, controller MCU is driven, and causes its cost to increase, type of drive is complicated, is not easy to the problem realizing.
For achieving the above object, the utility model provides following technical scheme:
A kind of novel multipoint resistance type touch screen, comprise: for display switch and schematic diagram target display screen (1), the transparent ito thin film of internal layer (2) and outer transparent ito thin film (3), a side that deviates from described transparent isolating points (4) at the transparent ito thin film of described skin (3) is provided with transparent scratch resistant plastic layer (5), wherein
Between the transparent ito thin film of described internal layer (2) and the transparent ito thin film of described skin (3), be provided with transparent isolating points (4), the transparent ito thin film of described internal layer (2) and the transparent ito thin film of described skin (3) correspondence are provided with a plurality of discontinuous ITO of pressing conductive regions, described in press ITO conductive region and be provided with electroconductive ITO.
Preferably, described display screen (1) is segment code type liquid crystal display.
Preferably, described in press ITO conductive region after pressing, by the transparent ito thin film of described internal layer (2) and the transparent ito thin film of described skin (3) conducting.
On the basis of above-mentioned disclosed a kind of novel multipoint resistance type touch screen, the invention also discloses a kind of novel multipoint resistance type testing circuit, comprise: microcontroller, resistance R 01, R02, R03, triode T01 and the inside and outside two-layer ito thin film conductive region of pressing, wherein
Described microcontroller is the single-chip microcomputer with a plurality of I/O mouths and at least one road A/D mouth;
The supply voltage end of described microcontroller is connected with the emitter supply voltage end of described triode T01, with being connected to power supply voltage;
One end of described resistance R 01 is connected with the IO mouth of described microcontroller, and the other end is connected with the base stage of described triode T01, for the base stage of described triode T01 is carried out to current limliting;
One end of described resistance R 02 is connected with the collector of described triode T01, and the other end and first is pressed ITO conductive region A and is connected, and for the current signal of described collector output is converted to voltage signal, acts on described first and presses ITO conductive region A;
One end ground connection of described resistance R 03, the other end and second is pressed ITO conductive region and is connected, for dividing potential drop current limliting.
Preferably, described triode T01 is PNP triode.
The invention also discloses a kind of novel multipoint resistance type switchgear, comprising: novel multipoint resistance type touch screen described above and novel multipoint resistance type testing circuit described above.
Known via above-mentioned technical scheme, compared with prior art, the utility model openly provides a kind of novel multipoint resistance type touch screen, testing circuit and switchgear, this novel multipoint resistance type touch screen comprises: for display switch and schematic diagram target display screen, the transparent ito thin film of internal layer and outer transparent ito thin film, a side that deviates from described transparent isolating points at the transparent ito thin film of described skin is provided with transparent scratch resistant plastic layer, wherein, between the transparent ito thin film of described internal layer and the transparent ito thin film of described skin, be provided with transparent isolating points, the transparent ito thin film correspondence of the transparent ito thin film of described internal layer and described skin is provided with a plurality of discontinuous ITO of pressing conductive regions, the described ITO of pressing conductive region is provided with electroconductive ITO.By correspondence on the transparent ito thin film of ectonexine, a plurality of discontinuous ITO of pressing conductive regions are set, the ITO conductive region of pressing on the transparent ito thin film of ectonexine connects, explanation energising, testing circuit is comprised of controller and cheap discrete component, reduced the cost of touch screens, also simplified the type of drive of touch screens, principle is simple, be convenient to debugging and be easy to realize.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the structural representation of the disclosed a kind of novel multipoint resistance type touch screen of the utility model embodiment;
Fig. 2 is the disclosed inside and outside two-layer ITO conductive region arrangenent diagram of the utility model embodiment;
Fig. 3 is the structural representation of the disclosed a kind of novel multipoint resistance type testing circuit of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of novel multipoint resistance type touch screen, testing circuit and switchgear, this novel multipoint resistance type touch screen comprises: for display switch and schematic diagram target display screen, the transparent ito thin film of internal layer and outer transparent ito thin film, a side that deviates from transparent isolating points at the transparent ito thin film of skin is provided with transparent scratch resistant plastic layer, wherein, between the transparent ito thin film of internal layer and outer transparent ito thin film, be provided with transparent isolating points, the transparent ito thin film of internal layer and outer transparent ito thin film correspondence are provided with a plurality of discontinuous ITO of pressing conductive regions, press ITO conductive region and be provided with electroconductive ITO.By correspondence on the transparent ito thin film of ectonexine, a plurality of discontinuous ITO of pressing conductive regions are set, the ITO conductive region of pressing on the transparent ito thin film of ectonexine connects, explanation energising, testing circuit is comprised of controller and cheap discrete component, reduce the cost of touch screens, also simplified the type of drive of touch screens.
Referring to accompanying drawing 1, is the structural representation of the disclosed a kind of novel multipoint resistance type touch screen of the utility model embodiment.The utility model embodiment discloses a kind of novel multipoint resistance type touch screen, concrete structure as shown in Figure 1, comprise: for display switch and schematic diagram target display screen 1, the transparent ito thin film 2 of internal layer and outer transparent ito thin film 3, a side that deviates from transparent isolating points (4) at the transparent ito thin film 3 of skin is provided with transparent scratch resistant plastic layer 5, wherein, between the transparent ito thin film 2 of internal layer and outer transparent ito thin film 3, be provided with transparent isolating points 4, the transparent ito thin film 2 of internal layer and outer transparent ito thin film 3 correspondences are provided with a plurality of discontinuous ITO of pressing conductive regions, press ITO conductive region and be provided with electroconductive ITO.
Preferably, display screen 1 described above is segment code type liquid crystal display.
Preferably, the ITO of pressing conductive region described above is after pressing, by the transparent ito thin film 2 of internal layer and outer transparent ito thin film 3 conductings.
Referring to accompanying drawing 2, is the disclosed inside and outside two-layer ITO conductive region arrangenent diagram of the utility model embodiment.As shown in Figure 2, the utility model is to arrange six ITO conductive regions, concrete, A in figure, B, C, D, E, F are the ITO conductive region in 6 regions, correspond to 6 switches, when pressing the a-quadrant of outer ITO, a-quadrant can contact conducting with the A ＇ region of internal layer ITO, switch conduction corresponding to now circuit as shown in Figure 3 identification judgement a-quadrant, in like manner, can detect B, C, D, E, on off state corresponding to F region.
On the basis of above-mentioned disclosed a kind of novel multipoint resistance type touch screen, the invention also discloses a kind of novel multipoint resistance type testing circuit, referring to accompanying drawing 3, is the structural representation of the disclosed a kind of novel multipoint resistance type testing circuit of the utility model embodiment.The present embodiment be take a-quadrant switch and is described as example, and the testing circuit principle of all the other 5 section switches is consistent with a-quadrant.
Concrete, the disclosed a kind of novel multipoint resistance type testing circuit of the utility model embodiment, comprise: microcontroller, resistance R 01, R02, R03, triode T01 and the inside and outside two-layer ito thin film conductive region of pressing, wherein, microcontroller is the single-chip microcomputer with a plurality of I/O mouths and at least one road A/D mouth; The supply voltage end of microcontroller is connected with the emitter supply voltage end of triode T01, with being connected to power supply voltage; One end of resistance R 01 is connected with the IO mouth of microcontroller, and the other end is connected with the base stage of triode T01, for the base stage of triode T01 is carried out to current limliting; One end of resistance R 02 is connected with the collector of triode T01, and the other end and first is pressed ITO conductive region A and is connected, and for the current signal of collector output is converted to voltage signal, acts on first and presses ITO conductive region A; One end ground connection of resistance R 03, the other end and second is pressed ITO conductive region and is connected, for dividing potential drop current limliting.
Preferably, triode T01 described above is PNP triode.
Principle of work: for the circuit described in Fig. 3, when microcontroller need to detect A and on off state corresponding to A ＇ conductive region, first the output of I/O mouth is set to low level, makes triode T01 in conducting state, and then the result detecting according to A/D mouth judges the on off state of a-quadrant.
Concrete, when a-quadrant is not pressed, while not being connected conducting with A ＇, the voltage that the A/D mouth of microcontroller detects is zero all the time; When a-quadrant is pressed, while being connected conducting with A ＇, electric current again through resistance R 03 is divided to ground through triode T01 by conduction region A and conduction region A ＇ by V+, and now A/D mouth detects the analog quantity of a non-zero, the conducting that is pressed of the switch that can judge thus a-quadrant.In like manner, according to the principle of a-quadrant, can detect all the other B, C, D, E, five switching manipulations corresponding to ITO conductive region of F.
The utility model discloses a kind of novel multipoint resistance type testing circuit, this testing circuit arranges a plurality of discontinuous ITO of pressing conductive regions by correspondence on the transparent ito thin film of ectonexine, the ITO conductive region of pressing on the transparent ito thin film of ectonexine connects, explanation energising, testing circuit is comprised of controller and cheap discrete component, reduce the cost of touch screens, also simplified the type of drive of touch screens.
On the basis of above-mentioned disclosed novel multipoint resistance type touch screen and testing circuit, the utility model embodiment also discloses a kind of novel multipoint resistance type switchgear, comprising: above-mentioned disclosed novel multipoint resistance type touch screen and testing circuit.Concrete structure and principle of work refer to foregoing description, at this, no longer repeat.
In sum, the utility model discloses a kind of novel multipoint resistance type touch screen, testing circuit and switchgear, this novel multipoint resistance type touch screen comprises: for display switch and schematic diagram target display screen, the transparent ito thin film of internal layer and outer transparent ito thin film, a side that deviates from described transparent isolating points at the transparent ito thin film of described skin is provided with transparent scratch resistant plastic layer, wherein, between the transparent ito thin film of described internal layer and the transparent ito thin film of described skin, be provided with transparent isolating points, the transparent ito thin film correspondence of the transparent ito thin film of described internal layer and described skin is provided with a plurality of discontinuous ITO of pressing conductive regions, the described ITO of pressing conductive region is provided with electroconductive ITO.By correspondence on the transparent ito thin film of ectonexine, a plurality of discontinuous ITO of pressing conductive regions are set, the ITO conductive region of pressing on the transparent ito thin film of ectonexine connects, explanation energising, testing circuit is comprised of controller and cheap discrete component, reduced the cost of touch screens, also simplified the type of drive of touch screens, principle is simple, be convenient to debugging and be easy to realize.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a novel multipoint resistance type touch screen, it is characterized in that, comprise: for display switch and schematic diagram target display screen (1), the transparent ito thin film of internal layer (2) and outer transparent ito thin film (3), a side that deviates from described transparent isolating points (4) at the transparent ito thin film of described skin (3) is provided with transparent scratch resistant plastic layer (5), wherein
Between the transparent ito thin film of described internal layer (2) and the transparent ito thin film of described skin (3), be provided with transparent isolating points (4), the transparent ito thin film of described internal layer (2) and the transparent ito thin film of described skin (3) correspondence are provided with a plurality of discontinuous ITO of pressing conductive regions, described in press ITO conductive region and be provided with electroconductive ITO.
2. novel multipoint resistance type touch screen according to claim 1, is characterized in that, described display screen (1) is segment code type liquid crystal display.
3. novel multipoint resistance type touch screen according to claim 1, is characterized in that, described in press ITO conductive region after pressing, by the transparent ito thin film of described internal layer (2) and the transparent ito thin film of described skin (3) conducting.
4. a novel multipoint resistance type testing circuit, is characterized in that, comprising: microcontroller, resistance R 01, R02, R03, triode T01 and the inside and outside two-layer ito thin film conductive region of pressing, wherein,
Described microcontroller is the single-chip microcomputer with a plurality of I/O mouths and at least one road A/D mouth;
The supply voltage end of described microcontroller is connected with the emitter supply voltage end of described triode T01, with being connected to power supply voltage;
One end of described resistance R 01 is connected with the IO mouth of described microcontroller, and the other end is connected with the base stage of described triode T01, for the base stage of described triode T01 is carried out to current limliting;
One end of described resistance R 02 is connected with the collector of described triode T01, and the other end and first is pressed ITO conductive region A and is connected, and for the current signal of described collector output is converted to voltage signal, acts on described first and presses ITO conductive region A;
One end ground connection of described resistance R 03, the other end and second is pressed ITO conductive region and is connected, for dividing potential drop current limliting.
5. novel multipoint resistance type testing circuit according to claim 4, is characterized in that, described triode T01 is PNP triode.
6. a novel multipoint resistance type switchgear, is characterized in that, comprising: the novel multipoint resistance type testing circuit in the novel multipoint resistance type touch screen in the claims 1-3 described in any one and the claims 4-5 described in any one.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320422502.4U CN203444459U (en) | 2013-07-16 | 2013-07-16 | Novel multi-point resistive touch screen, detection circuit and switching device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320422502.4U CN203444459U (en) | 2013-07-16 | 2013-07-16 | Novel multi-point resistive touch screen, detection circuit and switching device |
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| CN203444459U true CN203444459U (en) | 2014-02-19 |
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| CN201320422502.4U Expired - Lifetime CN203444459U (en) | 2013-07-16 | 2013-07-16 | Novel multi-point resistive touch screen, detection circuit and switching device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009745A (en) * | 2014-03-21 | 2014-08-27 | 无锡爱睿芯电子有限公司 | Resistive touch module and stringless musical instrument detection system |
| CN105955497A (en) * | 2016-05-09 | 2016-09-21 | 北京电子科技学院 | Multi-contact switch |
| CN109520459A (en) * | 2018-12-12 | 2019-03-26 | 广东省特种设备检测研究院中山检测院 | A kind of elevator safety clearance measurement instrument and method based on pressure sensor |
| CN109540070A (en) * | 2018-12-12 | 2019-03-29 | 广东省特种设备检测研究院中山检测院 | A kind of elevator safety clearance measurement instrument and method based on ITO coating |
| CN109861681A (en) * | 2019-01-31 | 2019-06-07 | 科世达(上海)机电有限公司 | A kind of assembly tooling of capacitance touching control equipment and its capacitive window |
| CN111452537A (en) * | 2019-01-22 | 2020-07-28 | 上海巨哥电子科技有限公司 | Display method and device |
-
2013
- 2013-07-16 CN CN201320422502.4U patent/CN203444459U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009745A (en) * | 2014-03-21 | 2014-08-27 | 无锡爱睿芯电子有限公司 | Resistive touch module and stringless musical instrument detection system |
| CN104009745B (en) * | 2014-03-21 | 2017-02-22 | 无锡爱睿芯电子有限公司 | Resistive touch module and stringless musical instrument detection system |
| CN105955497A (en) * | 2016-05-09 | 2016-09-21 | 北京电子科技学院 | Multi-contact switch |
| CN109520459A (en) * | 2018-12-12 | 2019-03-26 | 广东省特种设备检测研究院中山检测院 | A kind of elevator safety clearance measurement instrument and method based on pressure sensor |
| CN109540070A (en) * | 2018-12-12 | 2019-03-29 | 广东省特种设备检测研究院中山检测院 | A kind of elevator safety clearance measurement instrument and method based on ITO coating |
| CN109540070B (en) * | 2018-12-12 | 2024-04-30 | 广东省特种设备检测研究院中山检测院 | Elevator safety clearance measurement method based on ITO coating |
| CN109520459B (en) * | 2018-12-12 | 2024-04-30 | 广东省特种设备检测研究院中山检测院 | Elevator safety clearance measurement method based on pressure sensor |
| CN111452537A (en) * | 2019-01-22 | 2020-07-28 | 上海巨哥电子科技有限公司 | Display method and device |
| CN109861681A (en) * | 2019-01-31 | 2019-06-07 | 科世达(上海)机电有限公司 | A kind of assembly tooling of capacitance touching control equipment and its capacitive window |
| CN109861681B (en) * | 2019-01-31 | 2023-04-18 | 科世达(上海)机电有限公司 | Capacitor touch equipment and assembly fixture of capacitor diaphragm thereof |
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Correction item: Termination upon expiration of patent Correct: Revocation of Patent Expiration and Termination False: Expiration and Termination of 39 Volume 3101 Patent on August 1, 2023 Number: 31-01 Volume: 39 |
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| CU01 | Correction of utility model |