CN202394213U - Infrared touch screen - Google Patents
Infrared touch screen Download PDFInfo
- Publication number
- CN202394213U CN202394213U CN2011205704629U CN201120570462U CN202394213U CN 202394213 U CN202394213 U CN 202394213U CN 2011205704629 U CN2011205704629 U CN 2011205704629U CN 201120570462 U CN201120570462 U CN 201120570462U CN 202394213 U CN202394213 U CN 202394213U
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- China
- Prior art keywords
- infrared light
- infrared
- receiving device
- touch screen
- display screen
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Abstract
The utility model discloses an infrared touch screen comprising a display screen, a plurality of infrared light sending and receiving devices arranged at one side of the display screen, a conversion module and a processor, wherein each infrared light sending and receiving device comprises an infrared light sending device and an infrared light receiving device; the infrared light sending devices sequentially send infrared lights to the outside; the infrared light receiving device in each infrared light sending and receiving device is used for receiving the infrared lights which are sent by the infrared light sending device of the same infrared light sending and receiving device to be reflected; the infrared light receiving device generates a voltages signal; the conversion module is used for converting the voltage signals received from the infrared light receiving device into current signals; and the processor is used for determining the infrared light sending and receiving devices for receiving the infrared lights according to the current signals. The infrared touch screen has the advantages of simple detection of touch points, higher touch precision, waterproof performance and abrasion resistance.
Description
Technical field
The utility model relates to a kind of touch screen, particularly relates to a kind of infrared touch screen.
Background technology
Along with development of science and technology, human-computer interaction interface, for example, mouse, keyboard, touch pad, telepilot, touch-screen are being brought into play more and more important effect and function from strength to strength in people's live and work.Touch-screen particularly uses finger or felt pen to carry out the operation of corresponding function because of allowing the user, has simple to operate especially and advantage intuitively.Some have the terminal device of video capability, and for example mobile phone, MP4 (Media Player 4), PDA (Personal Digital Assistant) and notebook computer etc. tend to use touch-screen to realize the control of user to some common functions gradually.Meanwhile, traditional touch screen manifests some drawbacks, and for example capacitance plate is vulnerable to the influence of water, causes touch-control inaccurate.In addition, the light transmission of resistance screen bad and be worn easily etc. characteristics also more and more outstanding.
The utility model content
The technical matters that the utility model will solve is to overcome the drawback that detection is comparatively loaded down with trivial details and the touch-control precision is not good that traditional display screen in the prior art does not possess infrared touch controllable function, touch point, and a kind of comparatively simple and preferable infrared touch screen of touch-control precision of detection that possesses infrared touch controllable function, touch point is provided.
The utility model solves above-mentioned technical matters through following technical proposals: a kind of infrared touch screen; Comprise a display screen; Its characteristics are; This infrared touch screen also comprises: a plurality of infrared lights that are arranged at this display screen one side send and receiving device; Each infrared light sends with receiving device and comprises an infrared light sending device and an infrared light receiving device; Each infrared light send with receiving device in the infrared light sending device successively to the external emission infrared light, each infrared light send with receiving device in the infrared light receiving device be used to receive and be in same infrared light with this infrared light receiving device and send and the infrared light sending device emission back of receiving device and the infrared light that reflects, this infrared light receiving device generates a voltage signal then; One conversion module is used for those voltage signals that receive from each infrared light receiving device are converted into current signal; One processor is used for confirming that according to this current signal the infrared light that receives infrared light sends and receiving device.
Preferably, this display screen is TFT display screen or OLED display screen.
Preferably, those infrared light sending devices are infrarede emitting diode.
Preferably, those infrared light receiving devices are infrared photodiode or infrared electro transistor.
Preferably, this conversion module is even sheet metal.
Preferably, this infrared touch screen also comprises a tempered glass, and said tempered glass adheres on the surface of said display screen.
The positive progressive effect of the utility model is: the utility model is provided with infrared light through the one side at non-touch display screen and sends and receiving device; Make original non-touch screen have infrared touch controllable function; The mode of four end points electric currents through testing even sheet metal is confirmed touch point position simultaneously, make the location of touch point simple more with accurately.In addition, through water resistance and the wear resistance that one deck tempered glass has greatly improved screen is set above infrared display screen.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 confirms schematic diagram for the position, touch point of the utility model one embodiment
Fig. 3 is the structural representation based on the TFT-LCD screen of another embodiment of the utility model.
Embodiment
The embodiment of the utility model will describe with reference to accompanying drawing.Accompanying drawing for the ease of each embodiment of explanation the utility model, is not to carry out the explanation of exhaustive to the utility model just, neither the scope of the utility model be limited.
Fig. 1 is the structural representation of the utility model one embodiment.
Said infrared touch screen 1 comprises that a display screen 12 and a plurality of infrared light that is arranged at these display screen 12 one sides send and receiving device 13; Each infrared light sends with receiving device 13 and comprises an infrared light sending device and an infrared light receiving device; Infrared light sending device in each infrared light transmission and the receiving device 13 is successively to the external emission infrared light; Each infrared light send with receiving device 13 in the infrared light receiving device be used to receive and be in same infrared light with this infrared light receiving device and send and the infrared light sending device emission back of receiving device 13 and the infrared light that reflects, this infrared light receiving device generates a voltage signal then; One conversion module 14 is used for those voltage signals that receive from each infrared light receiving device are converted into current signal; One processor 15 is used for confirming that according to this current signal the infrared light that receives infrared light sends and receiving device 13.The infrared light of said infrared light sending device emission just reflects under by the condition of an object blocks at light usually.Said display screen 12 can be resistance display screen 12, electric capacity display screen 12, TFT display screen 12 or OLED display screen 12.Said display screen 12 is used to show the video image of wavelength in visible-range under the control of an end device.Said infrared light sending device can be infrarede emitting diode.Said infrared light receiving device can be quick diode of infrared light or infrared electro transistor.Said infrared light sends the upper surface or the lower surface that can be arranged at said display screen 12 with receiving device 13.Fig. 1 sends the structural representation that is arranged at the lower surface of 12 acts of said display screens with receiving device 13 for said infrared light.Said conversion module 14 can be an even sheet metal, and said infrared light receiving device is connected on the said even sheet metal.Said even sheet metal resistivity distribution everywhere is consistent.Said even sheet metal can be converted into current signal with the voltage signal that said infrared light receiving device receives.This infrared touch screen 1 also comprises a tempered glass 11, and said tempered glass 11 adheres on the surface of said display screen 12.
Fig. 2 confirms schematic diagram for the position, touch point of the utility model one embodiment
Said even sheet metal be one with the corresponding shape of display screen 12 shapes, for example be long and a wide rectangular uniform sheet metal that is respectively a and b.Said rectangular uniform sheet metal comprises four end points, i.e. end points 1 to end points 4.Said processor 15 can be determined the position of said infrared light receiving device according to the current value of four end points of said even sheet metal.A software program will be used in the position of said processor 15 definite said infrared light receiving devices.The principle formula of said software programming is shown in equation 1-2:
The rectangular uniform sheet metal that provides in the present embodiment can also can also satisfy other funtcional relationship with the resistivity of other resistance board replacement and resistance board.Correspondingly, the principle formula of said software programming also should change accordingly.Present embodiment has provided the mode of determining said infrared light receiving device position according to the current value of four end points of said even sheet metal, can also confirm the position of said infrared light receiving device certainly according to the magnitude of voltage of four end points of said even sheet metal.
Fig. 3 is the structural representation based on the TFT-LCD screen of another embodiment of the utility model.Said infrared touch screen comprises that a processor 20, a modular converter 21, a fluorescent tube 22, a light intensity control section 23, a colored filter part 24, an infrared light send and receiver module 25 and a tempered glass 26.Wherein said fluorescent tube 22, said light intensity control section 23 and said colored filter part 24 are TFT-LCD (Thin Film Transistor, thin film transistor (TFT)) the original module that comprises of screen.Said light intensity control section 23 also comprises a reflecting plate, LGP, Polarizer, the glass substrate that contains TFT and phase matching film thereof, liquid crystal material part usually.Said TFT-LCD screen does not possess infrared touch controllable function.This infrared light sends and receiver module 25 makes said TFT-LCD screen possess infrared touch controllable function with this processor 20 through on the basis of said TFT-LCD screen, increasing.Also set up one deck tempered glass 26 in addition at the upper surface of this infrared Touch Screen.The surface that tempered glass 26 adheres on said TFT-LCD screen can have been improved the ability of water resistance, wear resistance and the impact resistance of screen widely.
Though more than described the embodiment of the utility model, it will be understood by those of skill in the art that these only illustrate, the protection domain of the utility model is limited appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite of principle that does not deviate from the utility model and essence, but these changes and modification all fall into the protection domain of the utility model.
Claims (6)
1. an infrared touch screen comprises a display screen, it is characterized in that, this infrared touch screen also comprises:
A plurality of infrared lights that are arranged at this display screen one side send and receiving device; Each infrared light sends with receiving device and comprises an infrared light sending device and an infrared light receiving device; Infrared light sending device in each infrared light transmission and the receiving device is successively to the external emission infrared light; Each infrared light send with receiving device in the infrared light receiving device be used to receive and be in same infrared light with this infrared light receiving device and send and the infrared light sending device emission back of receiving device and the infrared light that reflects, this infrared light receiving device generates a voltage signal then;
One conversion module is used for those voltage signals that receive from each infrared light receiving device are converted into current signal;
One processor is used for confirming that according to this current signal the infrared light that receives infrared light sends and receiving device.
2. infrared touch screen as claimed in claim 1 is characterized in that, this display screen is TFT display screen or OLED display screen.
3. infrared touch screen as claimed in claim 1 is characterized in that, those infrared light sending devices are infrarede emitting diode.
4. infrared touch screen as claimed in claim 1 is characterized in that, those infrared light receiving devices are infrared photodiode or infrared electro transistor.
5. infrared touch screen as claimed in claim 1 is characterized in that, this conversion module is even sheet metal.
6. infrared touch screen as claimed in claim 1 is characterized in that, this infrared touch screen also comprises a tempered glass, and said tempered glass adheres on the surface of said display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205704629U CN202394213U (en) | 2011-12-30 | 2011-12-30 | Infrared touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205704629U CN202394213U (en) | 2011-12-30 | 2011-12-30 | Infrared touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202394213U true CN202394213U (en) | 2012-08-22 |
Family
ID=46669121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205704629U Expired - Fee Related CN202394213U (en) | 2011-12-30 | 2011-12-30 | Infrared touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202394213U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106681572A (en) * | 2015-11-05 | 2017-05-17 | 阿里巴巴集团控股有限公司 | Touch screen control method and device of intelligent terminal |
| CN108833614A (en) * | 2018-03-28 | 2018-11-16 | 广东欧珀移动通信有限公司 | The manufacturing method of display screen, electronic device and display screen |
-
2011
- 2011-12-30 CN CN2011205704629U patent/CN202394213U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106681572A (en) * | 2015-11-05 | 2017-05-17 | 阿里巴巴集团控股有限公司 | Touch screen control method and device of intelligent terminal |
| CN108833614A (en) * | 2018-03-28 | 2018-11-16 | 广东欧珀移动通信有限公司 | The manufacturing method of display screen, electronic device and display screen |
| CN108833614B (en) * | 2018-03-28 | 2020-09-11 | Oppo广东移动通信有限公司 | Display screen, electronic device and manufacturing method of display screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20121230 |