CN202008652U - Touch-control device based on infrared reflection films - Google Patents
Touch-control device based on infrared reflection films Download PDFInfo
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- CN202008652U CN202008652U CN2011200472396U CN201120047239U CN202008652U CN 202008652 U CN202008652 U CN 202008652U CN 2011200472396 U CN2011200472396 U CN 2011200472396U CN 201120047239 U CN201120047239 U CN 201120047239U CN 202008652 U CN202008652 U CN 202008652U
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- infrared light
- infrared
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Abstract
The utility model discloses a touch-control device based on infrared reflection films, belongs to the field of optical touch-control detection. The device comprises a rectangular frame and a touch screen located inside the rectangular frame. The rectangular frame is provided with a pair of zigzag inner surfaces and a pair of planar inner surfaces; infrared reflection films are stuck onto the zigzag inner surfaces and one planar inner surface respectively; and infrared light source emitting/receiving devices are arranged at the two ends of the other planar inner surface of the frame respectively. The normal direction of the zigzag inner surfaces for receiving the infrared light points to the light sensing surface of the infrared light source receiving device. When the device is used, the incidence angle and the reflection angle formed on the infrared reflection films through the infrared light can be reduced, so that the loss of return light energy is reduced effectively, the utilization ratio of light energy is increased, the dead zone of detection is avoided, and the accuracy of optical touch-control detection is improved.
Description
Technical field
The utility model relates to the optical touch detection technique, is meant a kind of contactor control device based on the infrared external reflection film especially.
Background technology
Fast development along with electronic message unit, the input of people and electronic message unit no longer is confined to the operation of button alternately, carry out alternately but need on display screen, directly click more and more with electronic message unit, contactor control device then is directly to click with electronic message unit to carry out mutual platform, and it mainly is presented as touch screen.
At present, comparatively Chang Yong light sensation formula touch screen is the location of realizing touch objects by light sensation triangle location technology, is the upstart in touch screen field; The touch screen of band camera needs light source can produce good bias light environment owing to rely on the camera location, and preferable because of the anti-interference effect, the light sensation formula touch screen in this area all adopts infrared light supply to produce light.
As shown in Figure 1, light sensation formula touch screen structure of the prior art comprises: framework 1 and the touch-screen 3 that is positioned at framework inside, the upper left corner of framework 1 and upper right corner inwall are respectively arranged with infrared light supply sending and receiving apparatus 2, paste three groups of strip infrared external reflection films on the left and right side inwall of framework 1 and the downside inwall respectively and (also be strip retroreflecting film, the light major part can be carried out retroreflecting, fraction carries out direct reflection, is mainly used in the Infrared technology).
The light that above-mentioned touch-screen is sent the infrared light supply sending and receiving apparatus by stickup strip infrared external reflection film on the frame inner wall is distributed in the surveyed area of whole touch screen, and the infrared light supply sending and receiving apparatus comprises infrared light supply emitter and infrared light supply receiving trap; When touch objects appears in the touch-screen surveyed area, be installed in the light intensity variation that near the infrared light supply receiving trap (being mainly the infrared induction camera) of infrared light supply emitter can detect the touch point, obtain the coordinate of touch point again by internal circuit and computer system, thereby realize location touch objects.
In the prior art, state in realization in the course of work based on the contactor control device of infrared external reflection film, there are the following problems:
According to manufacturing process, principle of work and the test findings of strip infrared external reflection film, generally there is the wide-angle attenuation problem in strip infrared external reflection film, and promptly the angle of incidence of light of strip infrared external reflection film is big more, and optical energy attenuation is big more.When the infrared light of infrared light emitted shines the whole touch screen surveyed area, some zone on the screen, for example: at the screen edges and corners place, the angle of the light that the normal of strip infrared external reflection film and light source send is bigger, wide-angle attenuation characteristic (return luminous energy loss) based on strip infrared external reflection film, a little less than making these regional light intensity, even cause detecting the appearance of blind area, influence the accuracy that optical touch detects.
The utility model content
Embodiment of the present utility model provides a kind of contactor control device based on the infrared external reflection film, the angle that emits beam with the normal that reduces the infrared external reflection film and infrared light supply sending and receiving apparatus, thereby effectively reduce return luminous energy loss, avoid detecting the appearance of blind area, improve the accuracy that detects.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of contactor control device based on the infrared external reflection film comprises rectangular frame and the touch-screen that is positioned at rectangular frame inside, and described rectangular frame has a pair of jagged inside surface, and the inside surface of pair of planar shape; Paste the infrared external reflection film respectively on described jagged inside surface and a plane inside surface; The remaining two ends of not pasting the plane inside surface of infrared external reflection film of framework are provided with the infrared light supply sending and receiving apparatus respectively.
In the such scheme, described infrared light supply sending and receiving apparatus comprises: at least one infrared light supply emitter and at least one infrared light supply receiving trap; The infrared light that described infrared light supply emitter is launched covers the touch area of described touch-screen.
In the such scheme, the normal that receives the zigzag inside surface of infrared light points to the light-sensitive surface of infrared light supply receiving trap.
In the such scheme, the light-sensitive surface of the as close as possible infrared light supply receiving trap of the light-emitting area of described infrared light supply emitter.
In the such scheme, the place ahead of described infrared external reflection film is provided with the infrared light transmission protective seam.
The contactor control device that the utility model embodiment provides based on the infrared external reflection film, has a pair of zigzag inside surface, and paste the infrared external reflection film respectively, the normal direction that receives the hackly surface of infrared light is pointed to the light-sensitive surface of infrared light supply receiving trap, when infrared light incides the infrared external reflection film and passes through infrared external reflection film reflex time, can reduce incident angle and reflection angle that infrared light forms on described infrared reflecting film, thereby effectively reduce return luminous energy loss, increase the efficiency of light energy utilization, and avoided the detection blind area to occur, improved the accuracy that optical touch detects.
Description of drawings
Fig. 1 is the structural representation of light sensation formula touch screen in the prior art;
Fig. 2 is based on the front elevation of the contactor control device of infrared external reflection film among the utility model embodiment;
Fig. 3 is based on the front elevation of the similar Design of the contactor control device of infrared external reflection film among the utility model embodiment.
Wherein, 1-framework; 2-infrared light supply sending and receiving apparatus; The 3-touch-screen; The zigzag inside surface of 4-framework; The normal of 5-sawtooth triangle hypotenuse; 6-infrared light transmission protective seam.
Embodiment
Be described in detail below in conjunction with the contactor control device based on the infrared external reflection film of accompanying drawing the utility model embodiment.
Referring to Fig. 2 and Fig. 3, the contactor control device based on the infrared external reflection film of the utility model embodiment comprises: rectangular frame 1 and the touch-screen 3 that is positioned at framework inside; Described rectangular frame 1 has the inside surface 4 of a pair of indentation, and a pair ofly is plane inside surface; Paste the infrared external reflection film respectively on described zigzag inside surface 4 and a plane inside surface; Framework 1 remaining two ends of not pasting the plane inside surface of infrared external reflection film are provided with infrared light supply sending and receiving apparatus 2 respectively.
Described infrared light supply sending and receiving apparatus 2 comprises: at least one infrared light supply emitter and at least one infrared light supply receiving trap.The light-emitting area of described infrared light supply emitter is installed in the upside or the downside of infrared light supply receiving trap, and the light-sensitive surface of as close as possible infrared light supply receiving trap, can better be received to guarantee the infrared ray that the infrared light supply emitter sends by the infrared light supply receiving trap.
The infrared light of infrared light supply emitter emission incides the infrared reflecting film on the zigzag inside surface, and by this infrared reflecting film reflected back infrared light supply receiving trap.In order to reduce incident angle and the reflection angle that infrared light forms on described infrared reflecting film, preferably, normal 5 directions that receive the zigzag inside surface of infrared light are pointed to the light-sensitive surface of infrared light supply receiving trap, like this, can effectively reduce return luminous energy loss, increase the efficiency of light energy utilization, thereby avoided detecting the appearance of blind area, improve the accuracy of optical detection.
The section of zigzag inside surface is several triangles, for not influencing reception and the reflection of Infrared at hackly surface, preferably, the section of zigzag inside surface is several right-angle triangles, as shown in Figures 2 and 3, plane, hypotenuse place by each right-angle triangle receives and reflects infrared light, and the normal direction on plane, hypotenuse place is pointed to the light-sensitive surface of infrared light supply receiving trap.
Designed a pair of jagged inside surface 4 on the framework of the present utility model, and the inside surface of pair of planar shape.The purpose that the side inside surface that the infrared light supply sending and receiving apparatus is relative is designed to the plane is, the infrared light that the infrared light supply emitter is launched is through the infrared external reflection film reflex time on this plane, make the received light intensity difference of infrared light supply receiving trap apart from less, avoid appearing at the very faint situation of light intensity that some position sensing arrives, thereby avoid detecting the appearance of blind area.
Preferably, the infrared light supply emitter is infrarede emitting diode or infra-red laser diode, and the infrared light supply receiving trap is the infrared induction camera.
Based on above-mentioned design philosophy; the place ahead of infrared external reflection film reflection direction among the utility model embodiment is provided with infrared light transmission protective seam 6; can prevent the injury of dust deposit and air corrosion like this, prolong the serviceable life of infrared external reflection film the infrared external reflection film.
As shown in Figure 2, each right-angle side in the vertical direction of both sides zigzag inside surface is isometric, point to the light-sensitive surface of infrared light supply receiving trap for the normal direction that guarantees plane, hypotenuse place, and the light path of light source is not caused and block, the gradient of each hypotenuse and the length of side of hypotenuse change along with the distance of this right-angle triangle and infrared light supply sending and receiving apparatus, the distance that is right-angle triangle and infrared light supply sending and receiving apparatus is far away more, the gradient of hypotenuse is more little, and the hypotenuse length of side is long more.
Shown in Figure 3, among the utility model embodiment based on the front elevation of the another kind of analog structure of the contactor control device of infrared external reflection film.The difference of Fig. 3 and Fig. 2 is, each right-angle side of both sides zigzag inside surface is wide in the horizontal direction, point to the light-sensitive surface of infrared light supply receiving trap for the normal direction that guarantees plane, hypotenuse place, and the light path of light source is not caused and block, the right-angle side personal attendant of the gradient of each hypotenuse and vertical direction the distance of this right-angle triangle and infrared light supply sending and receiving apparatus and changes, the distance that is right-angle triangle and infrared light supply sending and receiving apparatus is far away more, the gradient of hypotenuse is more little, and the right angle length of side of vertical direction is short more.
Certainly, above-mentioned two kinds of schemes are the utility model preferred embodiment, both sides zigzag inside surface in the vertical direction can be not isometric yet, both sides zigzag inside surface in the horizontal direction can be not wide yet, as long as the normal direction that guarantee to receive the zigzag inside surface of infrared light is pointed to the light-sensitive surface of infrared light supply receiving trap, and the light path of light source is not caused to block and get final product.
The utility model embodiment can be applied to the field of various contactor control devices based on the infrared reflecting film, is mainly used on the devices such as mobile phone screen, computing machine LCD Panel, electronic whiteboard.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (5)
1. contactor control device based on the infrared external reflection film comprises: rectangular frame and be positioned at the touch-screen of framework inside is characterized in that described rectangular frame has the inside surface of a pair of indentation, and a pair ofly is plane inside surface; Paste the infrared external reflection film respectively on described zigzag inside surface and a plane inside surface, the two ends of another plane inside surface are provided with the infrared light supply sending and receiving apparatus respectively.
2. device according to claim 1 is characterized in that, described infrared light supply sending and receiving apparatus comprises: at least one infrared light supply emitter and at least one infrared light supply receiving trap; Described infrared light supply emitter is the infrared light supply emitter that the infrared light launched covers the touch area of described touch-screen.
3. device according to claim 2 is characterized in that, the normal that receives the zigzag inside surface of infrared light points to the light-sensitive surface of infrared light supply receiving trap.
4. device according to claim 2 is characterized in that, described infrared light supply emitter is infrarede emitting diode or infra-red laser diode, and described infrared light supply receiving trap is the infrared induction camera.
5. device according to claim 1 is characterized in that, described infrared external reflection film the place ahead is provided with the infrared light transmission protective seam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200472396U CN202008652U (en) | 2011-02-25 | 2011-02-25 | Touch-control device based on infrared reflection films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200472396U CN202008652U (en) | 2011-02-25 | 2011-02-25 | Touch-control device based on infrared reflection films |
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| Publication Number | Publication Date |
|---|---|
| CN202008652U true CN202008652U (en) | 2011-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200472396U Expired - Lifetime CN202008652U (en) | 2011-02-25 | 2011-02-25 | Touch-control device based on infrared reflection films |
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| CN (1) | CN202008652U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622135A (en) * | 2012-02-29 | 2012-08-01 | 成都吉锐触摸技术股份有限公司 | Touch screen with infrared rays transmitted inside screen body and method for identifying touch points |
| CN106990875A (en) * | 2017-02-07 | 2017-07-28 | 江苏碳诺显示技术有限公司 | Realize large scale and improve the handwriting device of handwriting recognition efficiency |
| CN108376531A (en) * | 2018-02-28 | 2018-08-07 | 昆山国显光电有限公司 | A kind of display panel and its control method, display device |
| CN109409269A (en) * | 2018-10-16 | 2019-03-01 | 维沃移动通信有限公司 | The control method of screen assembly, electronic equipment and screen assembly |
-
2011
- 2011-02-25 CN CN2011200472396U patent/CN202008652U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622135A (en) * | 2012-02-29 | 2012-08-01 | 成都吉锐触摸技术股份有限公司 | Touch screen with infrared rays transmitted inside screen body and method for identifying touch points |
| CN106990875A (en) * | 2017-02-07 | 2017-07-28 | 江苏碳诺显示技术有限公司 | Realize large scale and improve the handwriting device of handwriting recognition efficiency |
| CN106990875B (en) * | 2017-02-07 | 2023-07-14 | 江苏碳诺显示技术有限公司 | Handwriting device capable of realizing large size and improving handwriting recognition efficiency |
| CN108376531A (en) * | 2018-02-28 | 2018-08-07 | 昆山国显光电有限公司 | A kind of display panel and its control method, display device |
| CN109409269A (en) * | 2018-10-16 | 2019-03-01 | 维沃移动通信有限公司 | The control method of screen assembly, electronic equipment and screen assembly |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111012 |
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| CX01 | Expiry of patent term |