CN202904536U - Laser touch screen - Google Patents
Laser touch screen Download PDFInfo
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- CN202904536U CN202904536U CN 201220510268 CN201220510268U CN202904536U CN 202904536 U CN202904536 U CN 202904536U CN 201220510268 CN201220510268 CN 201220510268 CN 201220510268 U CN201220510268 U CN 201220510268U CN 202904536 U CN202904536 U CN 202904536U
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- touch screen
- photovoltaic panel
- laser
- capacitance
- capacitance touch
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Abstract
The utility model discloses a laser touch screen, which comprises a contact point position processor, a first capacitive touch screen, a liquid crystal display, a diffusion plate and a photovoltaic plate, wherein the first capacitive touch screen, the liquid crystal display, the diffusion plate and the photovoltaic plate are orderly arranged along the direction from the top to the bottom, lamp tubes are respectively arranged on the two relative sides of the diffusion plate, the photovoltaic plate is used to detect laser signals, and the first capacitive touch screen and the photovoltaic plate are connected with the contact point position processor. The laser touch screen is added with the photovoltaic plate to be used as a laser sensor based on an existing capacitive touch screen, is matched with the contact point position processor, is high in sensitivity, and is suitable for screen touch functions of users in a long distance or a short distance. The laser touch screen can achieve the function that touch position information of a plurality of touch points of the users can be detected at the same time in long distance, thereby meeting use requirement of the users.
Description
Technical field
The utility model relates to the touch screen technical field, relates in particular to a kind of laser touch screen.
Background technology
For operational convenience, people replace mouse or keyboard with touch screen.During work, at first touch the touch screen that is installed in the display front end with finger or other object, then system comes the regioselective input information according to icon or the menu position of finger touch.Existing touch screen generally forms by touching detection part and touch screen controller; Touch detection part and be installed in the indicator screen front, for detection of the touching position information of user's touch point, send the touch screen controller after the acceptance; And the Main Function of touch screen controller is to receive the touching position information that sends from the touch point detection part, and converts it to contact coordinate, gives CPU again, and its can also receive the order that CPU sends simultaneously and be carried out.
Our employed touch screen has adopted capacitance type touch control screen mostly in the daily life, capacitance type touch control screen is with its higher sensitivity, obtain user's generally approval, capacitance type touch control screen is owing to use the mode of capacitive sensing to locate the touch point, make the user only near screen the time, just can operate touch screen, can't realize touching at a distance the function of touch screen.
The utility model content
Technical problem to be solved in the utility model provides a kind of laser touch screen, and it is not only highly sensitive, and suitable user carries out remote or in-plant screen touch controllable function.
In order to solve the problems of the technologies described above, the technical scheme content that the utility model adopts is specific as follows:
A kind of laser touch screen, it comprises the touch point location processor, and the first capacitance touch screen that sets gradually along direction from top to bottom, liquid crystal display, dual-side is respectively equipped with the diffuser plate of fluorescent tube and for detection of the photovoltaic panel of laser signal relatively; Described the first capacitance touch screen all links to each other with described touch point location processor with photovoltaic panel.
Laser touch screen of the present utility model is provided with photovoltaic panel, the laser that cooperates laser pen to send can be implemented in the function of remote touch touch screen, when Ear Mucosa Treated by He Ne Laser Irradiation is to the laser touch screen, this laser passes the first capacitance touch screen successively, liquid crystal display and relative dual-side shine on the P-N knot (being the contact) corresponding on the photovoltaic panel after being respectively equipped with the diffuser plate of fluorescent tube, corresponding P-N knot just produces induction current and sends this electric current to the touch point location processor, and the touch point location processor receives the touch position coordinates (being touching position information) that just can determine behind this electric current to this contact.And when closely touching touch screen, just can use laser pen irradiation photovoltaic panel or use staff to remove to touch the first capacitance touch and get rid of executable operations, wherein, use the concrete principle of laser pen irradiation photovoltaic panel just as indicated above, detailed principle is no longer made narration.
For the laser that can better diffuser plate be strengthened sends on the photovoltaic panel, preferably, between described diffuser plate and the photovoltaic panel is 0 ~ 0.5mm apart from span.
Higher for the sensitivity that makes photovoltaic panel, preferably, the P-N knot in the described photovoltaic panel is insulated and is isolated into a reticulate texture.
For can be in the touching position information that closely detects exactly user's touch point, preferably, the resolution of photovoltaic panel equates with the resolution of the first capacitance touch screen.Wherein, the resolution of described photovoltaic panel equates with the resolution of the first capacitance touch screen specifically to refer to that each P-N in the photovoltaic panel becomes a partner answers an inner capacitive sensing piece that arranges of described the first capacitance touch screen.
Because photovoltaic panel can only send the curent change of one of them contact to the touch point location processor at every turn, again by the definite touch position coordinates (being touching position information) to this contact of touch point location processor, when having multiple laser to shine photovoltaic panel simultaneously, can't realize simultaneously sending the curent change of a plurality of contacts to the touch point location processor, can not satisfy people's user demand.
Therefore, in order to can be implemented in the touching position information function that detects simultaneously at a distance a plurality of touch points of user, preferably, laser touch screen of the present utility model also comprises the second capacitance touch screen of being located at described photovoltaic panel bottom; Described the second capacitance touch screen links to each other with described touch point location processor; The resolution of described photovoltaic panel equates with the resolution of the second capacitance touch screen.Wherein, the resolution of described photovoltaic panel equates with the resolution of the second capacitance touch screen specifically to refer to that each P-N in the photovoltaic panel becomes a partner answers an inner capacitive sensing piece that arranges of described the second capacitance touch screen.
When the multiple tracks Ear Mucosa Treated by He Ne Laser Irradiation is on the photovoltaic panel, P-N knot (being the contact) corresponding on the photovoltaic panel has just produced induction current, wherein, this faradic quantity equates with the road number of laser, then these induction currents electric capacity of causing that corresponding P-N knot is corresponding and being arranged on the capacitive sensing piece of the second capacitance touch screen changes, thereby form and induction current electric current one to one at the second capacitance touch screen, the second capacitance touch screen is sent to the touch point location processor with these electric currents again and identifies, thereby determines the touch position coordinates (being touching position information) to each contact.
Preferably, described touch point location processor comprises single-chip microcomputer, the first electric capacity processing IC, the second electric capacity processing IC and photovoltaic panel processing IC; Described the first capacitance touch screen is connected to corresponding I/O end on the single-chip microcomputer by the first electric capacity processing IC; Described photovoltaic panel is connected to corresponding I/O end on the single-chip microcomputer by the photovoltaic panel processing IC; Described the second capacitance touch screen is connected to corresponding I/O end on the single-chip microcomputer by the second electric capacity processing IC.
Compared with prior art, the utility model has produced following beneficial effect:
Laser touch screen of the present utility model is set up photovoltaic panel as laser inductor on existing capacitance touch screen basis, and cooperation touch point location processor, not only highly sensitive, and suitable user carries out remote or in-plant screen touch controllable function, in the photovoltaic panel bottom another capacitance touch screen is set also simultaneously, can be implemented in the touching position information function that detects simultaneously at a distance a plurality of touch points of user, satisfied user's user demand.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of the embodiment one of laser touch screen of the present utility model;
Fig. 2 is the structural representation of the embodiment two of laser touch screen of the present utility model.
Embodiment
Embodiment one
As shown in Figure 1, laser touch screen of the present utility model, it comprises touch point location processor (not shown), and the first capacitance touch screen 1 that sets gradually along direction from top to bottom, liquid crystal display 2, dual-side is respectively equipped with the diffuser plate 4 of fluorescent tube 3 and for detection of the photovoltaic panel 5 of laser signal relatively; Described the first capacitance touch screen 1 all links to each other with described touch point location processor with photovoltaic panel 5.
Laser touch screen of the present utility model is provided with photovoltaic panel 5, the laser that cooperates laser pen to send can be implemented in the function of remote touch touch screen, when Ear Mucosa Treated by He Ne Laser Irradiation is to the laser touch screen, this laser passes the first capacitance touch screen 1 successively, liquid crystal display 2 and relative dual-side shine on the P-N knot (being the contact) corresponding on the photovoltaic panel 5 after being respectively equipped with the diffuser plate 4 of fluorescent tube 3, corresponding P-N knot just produces induction current and sends this electric current to the touch point location processor, and the touch point location processor receives the touch position coordinates (being touching position information) that just can determine behind this electric current to this contact.And when closely touching touch screen, just can use laser pen irradiation photovoltaic panel 5 or use staff to remove to touch the first capacitance touch screen 1 and go executable operations, wherein, use the concrete principle of laser pen irradiation photovoltaic panel 5 just as indicated above, detailed principle is no longer made narration.
For the laser that can better diffuser plate be strengthened sends on the photovoltaic panel 5, particularly, between described diffuser plate 4 and the photovoltaic panel 5 is 0 ~ 0.5mm apart from span.
Higher for the sensitivity that makes photovoltaic panel 5, particularly, the P-N knot in the described photovoltaic panel 5 is insulated and is isolated into a reticulate texture.
For can be in the touching position information that closely detects exactly user's touch point, particularly, the resolution of photovoltaic panel 5 equates with the resolution of the first capacitance touch screen 1.Wherein, the resolution of described photovoltaic panel 5 equates with the resolution of the first capacitance touch screen 1 specifically to refer to that each P-N in the photovoltaic panel 5 become a partner answers described the first capacitance touch screen 1 inner capacitive sensing piece that arranges.
Particularly, described touch point location processor comprises single-chip microcomputer, the first electric capacity processing IC, the second electric capacity processing IC and photovoltaic panel processing IC; Described the first capacitance touch screen 1 is connected to corresponding I/O end on the single-chip microcomputer by the first electric capacity processing IC; Described photovoltaic panel 5 is connected to corresponding I/O end on the single-chip microcomputer by the photovoltaic panel processing IC.
Embodiment two
Laser touch screen among the embodiment one, because photovoltaic panel 5 can only send the curent change of one of them contact to the touch point location processor at every turn, again by the definite touch position coordinates (being touching position information) to this contact of touch point location processor, when having multiple laser to shine photovoltaic panel 5 simultaneously, can't realize simultaneously sending the curent change of a plurality of contacts to the touch point location processor, can not satisfy people's user demand.
Therefore, in order to can be implemented in the touching position information function that detects simultaneously at a distance a plurality of touch points of user, as shown in Figure 2, two couples of embodiment one of embodiment make further improvement, the structure of the laser touch screen of the embodiment two that obtains thus is identical with embodiment one substantially, but difference is: described laser touch screen also comprises the second capacitance touch screen 6 of being located at described photovoltaic panel 5 bottoms; Described the second capacitance touch screen 6 links to each other with described touch point location processor; The resolution of described photovoltaic panel 5 equates with the resolution of the second capacitance touch screen 6.Wherein, the resolution of described photovoltaic panel 5 equates with the resolution of the second capacitance touch screen 6 specifically to refer to that each P-N in the photovoltaic panel 5 become a partner answers described the second capacitance touch screen 6 inner capacitive sensing pieces that arrange.
When the multiple tracks Ear Mucosa Treated by He Ne Laser Irradiation is on the photovoltaic panel 5, P-N knot (being the contact) corresponding on the photovoltaic panel 5 has just produced induction current, wherein, this faradic quantity equates with the road number of laser, then these induction currents electric capacity of causing that corresponding P-N knot is corresponding and being arranged on the capacitive sensing piece of the second capacitance touch screen 6 changes, thereby form and induction current electric current one to one at the second capacitance touch screen 6, the second capacitance touch screen 6 is sent to the touch point location processor with these electric currents again and identifies, thereby determines the touch position coordinates (being touching position information) to each contact.
At this moment, the touch point location processor among the embodiment two also with embodiment one in the touch point location processor, specific as follows: described touch point location processor comprise single-chip microcomputer, the first electric capacity processing IC, the second electric capacity processing IC and photovoltaic panel processing IC; Described the first capacitance touch screen 1 is connected to corresponding I/O end on the single-chip microcomputer by the first electric capacity processing IC; Described photovoltaic panel 5 is connected to corresponding I/O end on the single-chip microcomputer by the photovoltaic panel processing IC; Described the second capacitance touch screen 6 is connected to corresponding I/O end on the single-chip microcomputer by the second electric capacity processing IC.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and distortion should belong within the protection domain of the utility model claim all.
Claims (6)
1. laser touch screen, it is characterized in that: it comprises the touch point location processor, and the first capacitance touch screen that sets gradually along direction from top to bottom, liquid crystal display, dual-side is respectively equipped with the diffuser plate of fluorescent tube and for detection of the photovoltaic panel of laser signal relatively; Described the first capacitance touch screen all links to each other with described touch point location processor with photovoltaic panel.
2. laser touch screen as claimed in claim 1, it is characterized in that: between described diffuser plate and the photovoltaic panel is 0 ~ 0.5mm apart from span.
3. laser touch screen as claimed in claim 1 is characterized in that: the P-N knot in the described photovoltaic panel is insulated and is isolated into a reticulate texture.
4. laser touch screen as claimed in claim 3, it is characterized in that: the resolution of photovoltaic panel equates with the resolution of the first capacitance touch screen.
5. such as claim 3 or 4 described laser touch screens, it is characterized in that: also comprise the second capacitance touch screen of being located at described photovoltaic panel bottom; Described the second capacitance touch screen links to each other with described touch point location processor; The resolution of described photovoltaic panel equates with the resolution of the second capacitance touch screen.
6. laser touch screen as claimed in claim 5, it is characterized in that: described touch point location processor comprises single-chip microcomputer, the first electric capacity processing IC, the second electric capacity processing IC and photovoltaic panel processing IC; Described the first capacitance touch screen is connected to corresponding I/O end on the single-chip microcomputer by the first electric capacity processing IC; Described photovoltaic panel is connected to corresponding I/O end on the single-chip microcomputer by the photovoltaic panel processing IC; Described the second capacitance touch screen is connected to corresponding I/O end on the single-chip microcomputer by the second electric capacity processing IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220510268 CN202904536U (en) | 2012-09-29 | 2012-09-29 | Laser touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220510268 CN202904536U (en) | 2012-09-29 | 2012-09-29 | Laser touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202904536U true CN202904536U (en) | 2013-04-24 |
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ID=48125179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220510268 Expired - Fee Related CN202904536U (en) | 2012-09-29 | 2012-09-29 | Laser touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202904536U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107066141A (en) * | 2017-01-23 | 2017-08-18 | 合肥鑫晟光电科技有限公司 | Touch module and preparation method thereof, touching display screen and pulse laser pen |
| US10444929B2 (en) | 2016-09-09 | 2019-10-15 | Boe Technology Group Co., Ltd. | Laser touch panel, display device, display system and laser touch method |
| US11537223B2 (en) | 2020-01-21 | 2022-12-27 | Beijing Boe Display Technology Co., Ltd. | Interactive device, sensing screen, interactive system, and positioning method |
-
2012
- 2012-09-29 CN CN 201220510268 patent/CN202904536U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10444929B2 (en) | 2016-09-09 | 2019-10-15 | Boe Technology Group Co., Ltd. | Laser touch panel, display device, display system and laser touch method |
| CN107066141A (en) * | 2017-01-23 | 2017-08-18 | 合肥鑫晟光电科技有限公司 | Touch module and preparation method thereof, touching display screen and pulse laser pen |
| CN107066141B (en) * | 2017-01-23 | 2020-05-01 | 合肥鑫晟光电科技有限公司 | Touch module, manufacturing method thereof, touch display screen and pulse laser pen |
| US11537223B2 (en) | 2020-01-21 | 2022-12-27 | Beijing Boe Display Technology Co., Ltd. | Interactive device, sensing screen, interactive system, and positioning method |
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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 |
Granted publication date: 20130424 Termination date: 20180929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |