CN102760014B - A kind of infrared touch panel - Google Patents
A kind of infrared touch panel Download PDFInfo
- Publication number
- CN102760014B CN102760014B CN201210248507.XA CN201210248507A CN102760014B CN 102760014 B CN102760014 B CN 102760014B CN 201210248507 A CN201210248507 A CN 201210248507A CN 102760014 B CN102760014 B CN 102760014B
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- China
- Prior art keywords
- infrared
- light guide
- guide screen
- remote receiver
- parabola
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Abstract
The present invention discloses a kind of infrared touch panel, belong to touch screen technology field, comprise light guide screen, circuit board, housing, infrared transmitting tube and infrared remote receiver etc., around described light guide screen, four edges respectively comprises several parabolas of the same size, installs infrared transmitting tube on circuit boards and infrared remote receiver is all positioned in the paraboloidal focus of described light guide screen.The vertical light with favouring conduit screen can be transferred to infrared remote receiver by described infrared touch panel after two parabolas total reflections, therefore infrared touch panel can be accomplished very thin, and not affect its signal intensity.
Description
Technical field
The present invention relates to a kind of touch-screen, particularly a kind of infrared touch panel.
Background technology
Infrared touch panel utilizes X, the infrared ray matrix that Y-direction is gathered detects and the touch of consumer positioning, comprise light guide screen, circuit board, housing, infrared transmitting tube and infrared remote receiver etc., infrared transmitting tube and infrared remote receiver intersect the relative direction of two of being arranged on highly integrated circuit board, form a sightless infrared ray grating, light guide screen is fixed on above infrared transmitting tube and infrared remote receiver by housing.Control circuit on circuit board sends pulse shaping infrared ray to diode constantly and partially shakes light beam grid, when user is when touching light guide screen, finger will block two infrared rays anyhow through this position, has blocked light beam, thus can judge the position of touch point at screen.
Infrared touch panel is not by current/voltage and electrostatic interference, suitable rugged environment condition, so generally believe that infrared technology is the final development trend of touch-screen product, but the infrared light reflection face of current its light guide screen of infrared touch panel is on the market generally plane, if the patent No. is US8,068, described in the patent " ON A SUBSTRATE FORMED OR RESTING DISPLAYARRANGEMENT " of 101 B2, the infrared light reflection face of its light guide screen is the plane horizontal by 45° angle, and such reflecting surface exists following shortcoming:
1., in order to strengthen the reflection ray of infrared light as far as possible, needing the thickness increasing light guide screen, so both adding the material cost of light guide screen, and too increase the weight of supporting product (as mobile phone, computer etc.);
If 2. in order to attractive in appearance, economical and reduce the thickness of light guide screen, the light path of infrared touch panel light transmission will narrow, thus causes light weak, is subject to external interference, affects the signal of receiving terminal.
In view of this, the present inventor studies this, and develop a kind of infrared touch panel, this case produces thus.
Summary of the invention
The object of this invention is to provide the infrared touch panel that a kind of thickness is thin, light transmission signal is strong.
To achieve these goals, solution of the present invention is as follows:
A kind of infrared touch panel, comprise light guide screen, circuit board, housing, infrared transmitting tube and infrared remote receiver etc., wherein, infrared transmitting tube is arranged on circuit board wherein on 2 adjacent limits, infrared remote receiver is arranged on other 2 adjacent edges of circuit board, described light guide screen is fixed on above infrared transmitting tube and infrared remote receiver by housing, around light guide screen, four edges respectively comprises several parabolas of the same size, described parabola and light guide screen lower surface angle are 45 °, and parabola horizontal direction xsect is parabola shaped.
Infrared transmitting tube is on circuit boards installed and infrared remote receiver is all positioned in the paraboloidal focus of described light guide screen.
Parabola number on light guide screen four edges equals the number of infrared transmitting tube or infrared remote receiver in its corresponding sides.
Above-mentioned infrared touch panel is because infrared transmitting tube and infrared remote receiver are all positioned in the paraboloidal focus of light guide screen, and parabola slopes inwardly 45 °, so the paraboloidal light of all arrival infrared transmitting tube can launched, all parabolas of horizontal sheaf infrared catheters screen opposite side, and all light received all gather in focus by the parabola of opposite side, namely in infrared remote receiver.With can only by the light transmission perpendicular to light guide screen to compared with infrared remote receiver in prior art, the present invention can not only by perpendicular to light guide screen, and the light favouring conduit screen can be transferred to infrared remote receiver after two parabola total reflections, therefore infrared touch panel can be accomplished very thin, and not affect its signal intensity.
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
figure of description
Fig. 1 is the infrared touching screen structure schematic diagram of the present embodiment;
Fig. 2 is the infrared touch panel cross-sectional view of the present embodiment;
Fig. 3 is the infrared touch panel wherein part light path vertical view of the present embodiment.
Label declaration:
Light guide screen 1; Parabola 11; Lower surface 12;
Circuit board 2; Infrared transmitting tube 3; Infrared remote receiver 4; Housing 5.
embodiment :
As shown in Figure 1, a kind of infrared touch panel, comprise light guide screen 1, circuit board 2, housing 5, infrared transmitting tube 3 and infrared remote receiver 4 etc., wherein, infrared transmitting tube 3 is arranged on circuit board 2 wherein on 2 adjacent limits, infrared remote receiver 4 is arranged on other 2 adjacent edges of circuit board 2, described light guide screen 1 is fixed on above infrared transmitting tube 3 and infrared remote receiver 4 by housing 5, light guide screen 1 surrounding four edges respectively comprises several parabolas 11 of the same size, described parabola 11 is 45 ° with light guide screen lower surface 12 angle, parabola 11 horizontal direction xsect is parabola shaped.
Infrared transmitting tube 3 is on the circuit board 2 installed and infrared remote receiver 4 is all positioned in the focus of described light guide screen 1 parabola 11.
In the present embodiment, parabola 11 number on light guide screen 1 four edges equals the number of infrared transmitting tube 3 or infrared remote receiver 4 in its corresponding sides.
During above-mentioned infrared touch panel work, because infrared transmitting tube 3 and infrared remote receiver 4 are all positioned in the focus of light guide screen 1 parabola 11, the parabola 11 of the light of all arrival parabolas 11 infrared transmitting tube 3 can launched all horizontal sheaf infrared touch panel 1 opposite side, and all light received all gather in infrared remote receiver 4 by the parabola 11 of opposite side.With can only by the light transmission perpendicular to light guide screen 1 to compared with infrared remote receiver 4 in prior art, the present invention can not only by perpendicular to light guide screen 1, and the light favouring conduit screen 1 can be transferred to infrared remote receiver 4 after 2 parabolas 11 are totally reflected, therefore infrared touch panel 1 can be accomplished very thin, and not affect its signal intensity.
Above-described embodiment non-limiting product form of the present invention and style, any person of an ordinary skill in the technical field, to its suitable change done or modification, all should be considered as not departing from patent category of the present invention.
Claims (1)
1. an infrared touch panel, it is characterized in that: comprise light guide screen, circuit board, housing, infrared transmitting tube and infrared remote receiver, wherein, infrared transmitting tube is arranged on circuit board wherein on 2 adjacent limits, infrared remote receiver is arranged on other 2 adjacent edges of circuit board, described light guide screen is fixed on above infrared transmitting tube and infrared remote receiver by housing, around light guide screen, four edges respectively comprises several parabolas of the same size, described parabola and light guide screen lower surface angle are 45 °, and parabola horizontal direction xsect is parabola shaped; Infrared transmitting tube is on circuit boards installed and infrared remote receiver is all positioned in the paraboloidal focus of described light guide screen; During described infrared light guide screen infrared light transmission, be arranged on infrared transmitting tube in the paraboloidal focus of light guide screen by the parabola of light directive light guide screen, emission of light arrives the parabola of light guide screen opposite side after parabola total reflection, then focuses on arrival infrared remote receiver after total reflection;
Parabola number on light guide screen four edges equals the number of infrared transmitting tube or infrared remote receiver in its corresponding sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248507.XA CN102760014B (en) | 2012-07-18 | 2012-07-18 | A kind of infrared touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210248507.XA CN102760014B (en) | 2012-07-18 | 2012-07-18 | A kind of infrared touch panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102760014A CN102760014A (en) | 2012-10-31 |
| CN102760014B true CN102760014B (en) | 2015-07-29 |
Family
ID=47054484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210248507.XA Expired - Fee Related CN102760014B (en) | 2012-07-18 | 2012-07-18 | A kind of infrared touch panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102760014B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353812A (en) * | 2013-06-20 | 2013-10-16 | 长城信息产业股份有限公司 | Novel infrared touch screen optical glass system and touch detection method |
| CN104035620B (en) * | 2014-06-20 | 2018-09-07 | 深圳印象认知技术有限公司 | Optical sensor key, touch screen, fingerprint collecting equipment, electronic equipment |
| CN108733265B (en) * | 2018-04-17 | 2021-04-13 | 广州视源电子科技股份有限公司 | Touch frame transmitting tube and light source position setting method thereof |
| CN109728803B (en) * | 2019-01-08 | 2023-09-29 | 京东方科技集团股份有限公司 | Key component and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599895A (en) * | 2001-11-02 | 2005-03-23 | 内奥诺德瑞典股份有限公司 | On a substrate formed or resting display arrangement |
| CN101859207A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Touch panel and electronic device applying same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614370A (en) * | 2008-06-27 | 2009-12-30 | 精工电子有限公司 | Lighting device and adopt the display unit of this lighting device |
-
2012
- 2012-07-18 CN CN201210248507.XA patent/CN102760014B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1599895A (en) * | 2001-11-02 | 2005-03-23 | 内奥诺德瑞典股份有限公司 | On a substrate formed or resting display arrangement |
| CN101859207A (en) * | 2009-04-08 | 2010-10-13 | 鸿富锦精密工业（深圳）有限公司 | Touch panel and electronic device applying same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102760014A (en) | 2012-10-31 |
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| 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: 20150729 Termination date: 20180718 |
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| CF01 | Termination of patent right due to non-payment of annual fee |