CN201654729U - Large-size touch screen with anti-electromagnetic interference resistant function - Google Patents
Large-size touch screen with anti-electromagnetic interference resistant function Download PDFInfo
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- CN201654729U CN201654729U CN2009202352071U CN200920235207U CN201654729U CN 201654729 U CN201654729 U CN 201654729U CN 2009202352071 U CN2009202352071 U CN 2009202352071U CN 200920235207 U CN200920235207 U CN 200920235207U CN 201654729 U CN201654729 U CN 201654729U
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Abstract
The utility model discloses a large-size touch screen with anti-electromagnetic interference resistant function, which comprises a touch screen body, a controller and cables, and is characterized in that: electromagnetic shielding layers are arranged on the lateral sides of the effective touch area of the front plane of the touch screen body, and the back plane of the touch screen body corresponding to the lateral sides of the effective touch area, namely the lateral surfaces of the touch screen body, and the electromagnetic shielding layer are in ground connection. Under the situation of weaker signal intensity of the touch screen, the large-size touch screen improves the SNR of the touch signal by blocking the external electromagnetic interference on the touch screen, and is applicable to intense electromagnetic interference environments, and is also suitable for the application situations of the large-size touch screens with size more than 26 inches, narrow-side screens and high touch recognition reliability; the large-size touch screen with the anti-electromagnetic interference resistant function has high operating reliability, not only has powerful anti-electromagnetic interference capability, but also meets the relevant electromagnetic compatibility safety regulation of electronic products.
Description
Technical field
The utility model relates to a kind of touch-screen, relates in particular to a kind of electromagnetic armouring structure that has, and reaches the touch-screen of anti-electromagnetic interference function, and the size of touch-screen realizes 26 inches and above large scale.
Background technology
Hypotenuse touch screen technology principle is the plane sound wave technology of comparative maturity, plane sound wave is the mechanical energy ripple of propagating at medium (for example rigid material such as glass or metal) plane shallow-layer, by wedge shape tribrach (according to the strict design of the wavelength of plane wave), can accomplish orientation, the low-angle sound pulse that converts the electrical signal to, form the signal that XY interweaves in touch screen plane, to judge the coordinate that touches; The plane sound wave stable performance, be easy to analyze, and in the shear wave transmittance process, has very sharp-pointed frequency characteristic, development is very fast on the application direction of nondestructive examination, radiography and wave filter in recent years, and technology such as the theoretical research that plane sound wave is relevant, semiconductor material, acoustic conductance material, detection technique are all quite ripe.
Fig. 1 Fig. 1 is the structural representation of existing screen body of touch screen; Fig. 2 is that the A of Fig. 1 is to view.
As depicted in figs. 1 and 2: the touch screen portion of plane sound wave touch-screen can be the glass plate of plane, sphere or a cylinder, be installed in the front of CRT, LED, LCD or plasma display screen, this piece glass plate is a pure tempered glass, and being different from other class touch screen technology is without any pad pasting and overlayer.The electric signal that transmitting transducer is sent the touch-screen cable here by controller transmits to the left plane after being converted into acoustic wave energy, be carved with 45 and by after dredging the very accurate reflection strip of close spacing 2 and reflecting through a group of glass plate bottom then, acoustic wave energy is to the even face transmission on top, through the screen body plane, gather to become to the right line to propagate receiving transducer 6 to the X-axle by the reflection strip 2 of top again, receiving transducer 6 becomes electric signal with the plane sound wave energy that returns.After burst pulse of transmitting transducer emission, acoustic wave energy is gone through different approaches and is arrived receiving transducer 6, walk rightmost arrival the earliest, walk leftmost arrival the latest, these acoustic wave energies with arriving evening that early arrive are superimposed as the waveform signal of a broad, therefore be not difficult to find out, received signal has been gathered all and has been gone through the acoustic wave energy that the different paths of length return in X-direction, the distance that they are passed by in Y-axis is identical, but on X-axis, farthest than the nearest twice X-axis distance of having walked more, so the time shaft of this waveform signal reflects the position before each original waveform stack, just the X-axis coordinate can obtain the Y-axis coordinate with quadrat method.
The first characteristics of plane sound wave touch-screen are exactly uprising, because being one deck, the workplace of plane sound wave touch-screen cannot see, beats not bad acoustic wave energy, basic unit's glass of touch-screen is without any interlayer and structural stress (thereby plane sound wave touch-screen can develop into directly be made in the CRT plane without any " screen "), therefore very uprising, be fit to the public place; The second largest characteristics of plane sound wave touch-screen are exactly clear attractive in appearance, because structure is few, have only one deck simple glass, and transmittance and sharpness are all much better than capacitance resistance touch-screen; The third-largest characteristics of plane sound wave touch-screen are that reaction velocity is fast, and reaction velocity is the fastest in its all touch-screens, feel very smooth and easy during use; The fourth-largest characteristics of plane sound wave touch-screen are stable performances, because the plane sound wave know-why is stable, and the controller of plane sound wave touch-screen comes calculated touch location by measuring the position of attenuation initiation on time shaft, so the plane sound wave touch-screen is highly stable, precision is also very high, the precision of present plane sound wave technology touch-screen is 4096 * 4096 * 256 grades of dynamics normally, can support nearly 10 touch after finishing, and response speed rises to and is lower than 10ms.
Fig. 1 is a kind of vertical view of common plane acoustic wave touching screen structure; Fig. 2 is a kind of front view of common plane acoustic wave touching screen structure.
Narrow down day by day at present and that the large scale touch display is used is increasingly extensive along with the frame of LCD display, can satisfy the demand does not at present have the common plane acoustic wave touching screen (as depicted in figs. 1 and 2) of electromagnetic armouring structure and compares with the common plane acoustic wave touching screen of the no electromagnetic armouring structure that does not have These characteristics that exists before this, signal intensity dies down, signal to noise ratio (S/N ratio) reduces, thereby the anti-electromagnetic interference capability of touch-screen and the reliability of product operate as normal are reduced, (said herein common plane acoustic wave touching screen refers to that the screen body of its touch-screen does not have all kinds of plane sound wave screen bodies of electromagnetic armouring structure, be positioned at the screen body that touches the plane as transducer, the screen body that transducer is positioned at non-touch plane (shields as hypotenuse, the grating transducer screen) etc.) therefore, satisfying when using needed large scale touch-screen greater than 26 inches touch display, there is the technical difficulty that remains to be broken through, as: if improve the signal intensity of touch-screen and the signal to noise ratio (S/N ratio) of signal by the mode that improves the touch-screen emissive power simply, then be subjected to the restriction of the relevant safety of the Electro Magnetic Compatibility of electronic product, as CE, FCC, safety standards such as CCC.
The utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide the relevant safety of a kind of Electro Magnetic Compatibility that meets electronic product, has very strong anti-electromagnetic interference capability, and can the fine large scale touch-screen with anti-electromagnetic interference function that improves the signal to noise ratio (S/N ratio) of signal.
The utility model is achieved through the following technical solutions:
A kind of large scale touch-screen with anti-electromagnetic interference function, comprise the touch-screen body, controller and cable, the touch-screen body is electrically connected with screen body signal wire, it comprises the positive facial plane of touch-screen body, the hypotenuse plane of a touch-screen body back side plane and a side, the center section of the positive facial plane of touch-screen body is effective Petting Area, effectively the both sides up and down of Petting Area are the striate region, and the two ends up and down on hypotenuse plane are respectively arranged with transducer, and form angle α between hypotenuse plane and the touch-screen body back side plane with certain angle, it is characterized in that: the outside of the effective Petting Area on the positive facial plane of touch-screen body, with the outside of effective Petting Area corresponding touch-screen body back side plane be that the side of touch-screen body all is provided with electro-magnetic screen layer, electro-magnetic screen layer ground connection.
Above-mentioned electro-magnetic screen layer comprise with the corresponding electro-magnetic screen layer upper ledge of the positive facial plane of touch-screen body and with the corresponding electro-magnetic screen layer lower frame of touch-screen body back side plane, be connected by web member between electro-magnetic screen layer upper ledge and the electro-magnetic screen layer lower frame, and electric connection.
The U type groove bar of above-mentioned electro-magnetic screen layer for linking together with web member by side or base or top with the corresponding multistage of touch-screen body side surface, and electric connection between the multistage U type groove bar.
Above-mentioned web member is fastener or brace.
The material that above-mentioned electro-magnetic screen layer is is the metal material that electrical conductivity is good, have strong rigidity, as aluminium alloy or steel etc.
The material of above-mentioned electro-magnetic screen layer is the nonmetallic materials with good moldability, and nonmetallic materials are near coating on the inside surface of touch-screen surface or be bonded with the good material of electrical conductivity, and described nonmetallic materials are plastics, ABS, PE etc.
Above-mentioned electro-magnetic screen layer is by the mode ground connection of the good metal connecting sheet of earth lead or electrical conductivity with single-point or multiple spot.
The beneficial effects of the utility model are: large scale touch-screen described in the utility model, under the more weak situation of touch screen signal intensity, by intercepting the interference of external electromagnetic to touch-screen, the signal to noise ratio (S/N ratio) of touch signal is promoted, make being applicable to strong electromagnetic interference environment, being applicable to the application scenario of 26 inches and above large scale touch-screen, narrow limit screen and high touch recognition reliability simultaneously of touch-screen, and has high operational reliability, not only have very strong anti-electromagnetic interference capability, but also meet the relevant safety of Electro Magnetic Compatibility of electronic product.
Description of drawings
Fig. 1 is a kind of vertical view of common plane acoustic wave touching screen structure;
Fig. 2 is a kind of front view of common plane acoustic wave touching screen structure;
Fig. 3 is the vertical view of the structure of the utility model embodiment one;
Fig. 4 is the front view of the structure of the utility model embodiment one;
Fig. 5 is the left view of the structure of the utility model embodiment one;
Fig. 6 is the vertical view of the structure of the utility model embodiment two;
Fig. 7 is the front view of the utility model embodiment two;
Fig. 8 is the vertical view of the structure of the utility model embodiment three;
Fig. 9 is the front view of the utility model embodiment three;
Figure 10 is the vertical view of the structure of the utility model embodiment four;
Figure 11 is the front view of the utility model embodiment four.
Main Reference numeral implication is among the figure:
1, touch-screen body 11, effective Petting Area 12, the positive facial plane of touch-screen body
13, touch-screen body back side plane 2, electro-magnetic screen layer 21, electro-magnetic screen layer upper ledge
22, electro-magnetic screen layer lower frame 23, earth lead 24, screen body signal wire
25, U type groove bar junction 26, electro-magnetic screen layer upper ledge and lower frame junction
3, striate region 4, hypotenuse plane area 5, transducer
Angle between α, hypotenuse plane and touch-screen body back side plane
Embodiment
Below in conjunction with accompanying drawing, describe embodiment of the present utility model in detail:
Large scale touch-screen with anti-electromagnetic interference function, comprise touch-screen body 1, controller and cable, touch-screen body 1 is electrically connected with screen body signal wire 24, it comprises the hypotenuse plane 4 of the positive facial plane 12 of touch-screen body, touch-screen body back side plane 13 and a side, the center section of the positive facial plane 12 of touch-screen body is effective Petting Area 11, effectively the both sides up and down of Petting Area 11 are striate region 3, and the two ends up and down on hypotenuse plane 4 are respectively arranged with transducer 5, and form the angle α with certain angle between hypotenuse plane 4 and the touch-screen body back side plane 13.
Embodiment 1:
Fig. 3 is the vertical view of the structure of the utility model embodiment one; Fig. 4 is the front view of the structure of the utility model embodiment one; Fig. 5 is the left view of the structure of the utility model embodiment one.
As Fig. 3 to shown in 5: the outside of the effective Petting Area 11 on the positive facial plane 12 of touch-screen body, with the outside of effective Petting Area 11 corresponding touch-screen body back side plane 13 be that the side of touch-screen body 1 all is provided with electro-magnetic screen layer 2, electro-magnetic screen layer 2 is by earth lead 23 ground connection, and described electro-magnetic screen layer 2 comprise with the positive facial plane 12 corresponding electro-magnetic screen layer upper ledges 21 of touch-screen body and with touch-screen body back side plane 13 corresponding electro-magnetic screen layer lower frames 22, be connected by web member fastener (also can be brace herein) between electro-magnetic screen layer upper ledge 21 and the electro-magnetic screen layer lower frame 22, and electric connection each other, wherein electro-magnetic screen layer upper ledge 21 is that the conductivity performance is good with the material of electro-magnetic screen layer lower frame 22, metal material aluminium alloy (also can be steel herein) with strong rigidity.
Embodiment 2:
Fig. 6 is the vertical view of the structure of the utility model embodiment two; Fig. 7 is the front view of the utility model embodiment two.
As shown in Figure 6 and Figure 7: the outside of the effective Petting Area 11 on the positive facial plane 12 of touch-screen body, with the outside of effective Petting Area 11 corresponding touch-screen body back side plane 13 be that the side of touch-screen body 1 all is provided with electro-magnetic screen layer 2, electro-magnetic screen layer 2 is by earth lead 23 ground connection, and described electro-magnetic screen layer 2 is by forming with the corresponding 4 sections U type groove bars in touch-screen body 1 side, the material of U type groove bar is that electrical conductivity is better, metal material steel with strong rigidity, each section U type groove bar junction 25 is that brace links to each other at the side of U type groove bar (also can link to each other by base or top) herein by the web member with better electric conductivity, and keeping being electrically connected of each section U type groove bar, the U type groove bar junction 25 of present embodiment is distributed on four angles of magnetic masking layer 2.
Embodiment 3:
Fig. 8 is the vertical view of the structure of the utility model embodiment three; Fig. 9 is the front view of the utility model embodiment three.
As Fig. 8 and shown in Figure 9: the outside of the effective Petting Area 11 on the positive facial plane 12 of touch-screen body, with the outside of effective Petting Area 11 corresponding touch-screen body back side plane 13 be that the side of touch-screen body 1 all is provided with electro-magnetic screen layer 2, electro-magnetic screen layer 2 is by earth lead 23 ground connection, and described electro-magnetic screen layer 2 is by forming with the corresponding 4 sections U type groove bars in touch-screen body 1 side, the material of U type groove bar is that electrical conductivity is better, nonmetallic materials plastics with strong rigidity, its shaped structures is bonded with electrical conductivity material preferably near the inside surface on screen body of touch screen 1 plane, each section U type groove bar junction 25 is that brace links to each other at the side of U type groove bar (also can link to each other by base or top) herein by the web member with better electric conductivity, and keeping being electrically connected of each section U type groove bar, the U type groove bar junction 25 of present embodiment is distributed on four limits of magnetic masking layer 2.
Embodiment 4
Figure 10 is the vertical view of the structure of the utility model embodiment four; Figure 11 is the front view of the utility model embodiment four.
As shown in Figure 10 and Figure 11: the outside of the effective Petting Area 11 on the positive facial plane 12 of touch-screen body, with the outside of effective Petting Area 11 corresponding touch-screen body back side plane 13 be that the side of touch-screen body 1 all is provided with electro-magnetic screen layer 2, electro-magnetic screen layer 2 is by earth lead 23 ground connection, and described electro-magnetic screen layer 2 is by forming with the corresponding 2 sections U type groove bars in touch-screen body 1 side, the material of U type groove bar is that electrical conductivity is better, nonmetallic materials PE with strong rigidity, its shaped structures is bonded with electrical conductivity material preferably near the inside surface on screen body of touch screen 1 plane, each section U type groove bar junction 25 is that brace links to each other at the side of U type groove bar (also can link to each other by base or top) herein by the web member with better electric conductivity, and keep being electrically connected of each section U type groove bar, the U type groove bar junction 25 of present embodiment to be distributed on two limits up and down of magnetic masking layer 2.
Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within the protection domain of the present utility model.
Claims (9)
1. large scale touch-screen with anti-electromagnetic interference function, comprise touch-screen body (1), controller and cable, touch-screen body (1) is electrically connected with screen body signal wire, it comprises the positive facial plane of touch-screen body (12), the hypotenuse plane (4) of a touch-screen body back side plane (13) and a side, the center section of the positive facial plane of touch-screen body (12) is effective Petting Area (11), effectively the both sides up and down of Petting Area (11) are striate region (3), and the two ends up and down of hypotenuse plane (4) are respectively arranged with transducer (5), and form angle α between hypotenuse plane (4) and the touch-screen body back side plane (13) with certain angle, it is characterized in that: the outside of the effective Petting Area (11) on the positive facial plane of touch-screen body (12), with the outside corresponding touch-screen body back side plane (13) of effective Petting Area (11) be that the side of touch-screen body (1) all is provided with electro-magnetic screen layer (2), electro-magnetic screen layer (2) ground connection.
2. the large scale touch-screen with anti-electromagnetic interference function according to claim 1, it is characterized in that: described electro-magnetic screen layer (2) comprise with the corresponding electro-magnetic screen layer upper ledge of the positive facial plane of touch-screen body (12) (21) and with the corresponding electro-magnetic screen layer lower frame of touch-screen body back side plane (13) (22), be connected by web member between electro-magnetic screen layer upper ledge (21) and the electro-magnetic screen layer lower frame (22), and electric connection.
3. the large scale touch-screen with anti-electromagnetic interference function according to claim 1, it is characterized in that: the U type groove bar of described electro-magnetic screen layer (2) for linking together with web member by side or base or top with the corresponding multistage of touch-screen body side surface, and electric connection between the multistage U type groove bar.
4. according to claim 2 or 3 described large scale touch-screens with anti-electromagnetic interference function, it is characterized in that: described web member is fastener or brace.
5. according to each the described large scale touch-screen with anti-electromagnetic interference function in the claim 1 to 3, it is characterized in that: the material of described electro-magnetic screen layer (2) is the metal material that electrical conductivity is good, have strong rigidity.
6. the large scale touch-screen with anti-electromagnetic interference function according to claim 5 is characterized in that: described metal material is aluminium alloy or steel.
7. according to each the described large scale touch-screen in the claim 1 to 3 with anti-electromagnetic interference function, it is characterized in that: the material of described electro-magnetic screen layer (2) is the nonmetallic materials with good moldability, and nonmetallic materials are near coating on the inside surface on touch-screen body (1) surface or be bonded with the good material of electrical conductivity.
8. the large scale touch-screen with anti-electromagnetic interference function according to claim 7 is characterized in that: described nonmetallic materials are any among plastics, ABS, the PE.
9. the large scale touch-screen with anti-electromagnetic interference function according to claim 1 is characterized in that: described electro-magnetic screen layer (2) is by the mode ground connection of the good metal connecting sheet of earth lead or electrical conductivity with single-point or multiple spot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202352071U CN201654729U (en) | 2009-10-20 | 2009-10-20 | Large-size touch screen with anti-electromagnetic interference resistant function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202352071U CN201654729U (en) | 2009-10-20 | 2009-10-20 | Large-size touch screen with anti-electromagnetic interference resistant function |
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| Publication Number | Publication Date |
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| CN201654729U true CN201654729U (en) | 2010-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202352071U Expired - Fee Related CN201654729U (en) | 2009-10-20 | 2009-10-20 | Large-size touch screen with anti-electromagnetic interference resistant function |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103164062A (en) * | 2011-12-15 | 2013-06-19 | 瀚宇彩晶股份有限公司 | Touch panel and touch display device |
| CN103576971A (en) * | 2012-07-24 | 2014-02-12 | 宏达国际电子股份有限公司 | Electronic apparatus, touch cover and fabricating method thereof |
| CN107450765A (en) * | 2016-05-26 | 2017-12-08 | 株式会社日本显示器 | Display device and sensor |
-
2009
- 2009-10-20 CN CN2009202352071U patent/CN201654729U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103164062A (en) * | 2011-12-15 | 2013-06-19 | 瀚宇彩晶股份有限公司 | Touch panel and touch display device |
| CN103164062B (en) * | 2011-12-15 | 2016-05-25 | 瀚宇彩晶股份有限公司 | Contact panel and touch control display apparatus |
| CN103576971A (en) * | 2012-07-24 | 2014-02-12 | 宏达国际电子股份有限公司 | Electronic apparatus, touch cover and fabricating method thereof |
| CN103576971B (en) * | 2012-07-24 | 2016-08-17 | 宏达国际电子股份有限公司 | Electronic installation, touch cover and preparation method thereof |
| CN107450765A (en) * | 2016-05-26 | 2017-12-08 | 株式会社日本显示器 | Display device and sensor |
| CN107450765B (en) * | 2016-05-26 | 2021-11-19 | 株式会社日本显示器 | Display device and sensor |
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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: 20101124 Termination date: 20141020 |
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| EXPY | Termination of patent right or utility model |