The cascade subregion surface acoustic wave touch screen that a kind of touch device is concealed
Technical field
The utility model relates to a kind of acoustic wave touch positioning system, and particularly a kind of surface that touches face is the concealed cascade subregion surface acoustic wave touch screen of touch device without the large scale surface acoustic wave touch screen of any touch device.
Background technology
The general surface acoustic wave touching screen is by the screen structure base board, and transmitting transducer, receiving transducer, reflector element array and signal wire form.Be the location touch coordinate, reflector element array and transducer are coupling in same touch plane usually.And touch device generally comprises transmitting transducer, receiving transducer, reflector element array and signal wire, and existing surface acoustic wave touch screen is because reflector element array and transducer are distributed in same touch plane, take certain position, give to install to optimize and bring difficulty, especially when design Rimless structure, transducer can't be hidden apparently higher than touch face.
Be hypotenuse although existing patent proposes to shield transducer position mill corresponding on the body angle, transducer is coupling on the hypotenuse, makes transducer basically not be higher than touch face, has simplified front mount structure.But adopt the touch-screen striped of this mode still in positive apparent direction as seen, do not reach the purpose of hiding touch device.
Patent CN2546945Y has proposed a kind of reflector element array and touch face not at conplane surface acoustic wave touch screen, and still, transducer can't reach the purpose of hiding touch device still in the positive apparent direction of touch-screen.
Patent CN202133983U has proposed a kind of surface acoustic wave touch screen that reflector element array and transducer is placed Different Plane, though this patent places transducer at the back side of touch face, but the reflector element array still places touch face, can't reach the purpose of hiding touch device, and the part that occupies the reflector element array can't realize touching, and has the blind area.
Patent CN202495017U has proposed a kind of surface acoustic wave touch screen that fully touch device is placed non-touch face, but is subjected to the impact of surface acoustic wave propagate decay, the large-sized surface acoustic wave touch screen of difficult realization.
Simultaneously, because the selection of touch screen base plate limitation, the surface acoustic wave energy is the decay of index magnitude in the board transport process, and the surface acoustic wave touch screen that above patent realizes only is achieved for small-medium size.At present known can realize the large scale surface acoustic wave touch screen by the substrate of preferred conduction surfaces sound wave or the mode of reduction surface acoustic wave transmission frequency, but the former causes higher realization cost usually, and latter has limited the thickness of touch screen base plate and reduced the sensitivity that touches.
The utility model is based on the further realization of patent CN202495017U, and when realizing hiding touch device, the mode by cascade touch subregion realizes increasing the purpose of touch area.
The utility model content
For the deficiency that exists on the prior art, the utility model purpose is to be to provide a kind of realization to touch the complete non-blind area of face, guaranteed touch screen performance, realized the concealed concealed cascade subregion surface acoustic wave touch screen of touch device of touch device of large scale surface acoustic wave touch screen, strengthen the acoustic energy propagates intensity on the described screen body, reduce the energy loss of acoustic energy.
To achieve these goals, the utility model is to realize by the following technical solutions:
The cascade subregion surface acoustic wave touch screen that a kind of touch device is concealed, comprise the screen body, it is characterized in that: the facing of described screen body is provided with on the projecting plane and touches partitioned mode with cascade and increase the touch area of effective touch scope and be arranged on a plurality of reflector element arrays and transducer around the screen body; Described reflector element array and transducer consist of touch device, and form a plurality of cascades touch effective coverage among a small circle; Described touch device is coupling in the touch area and faces the back side, projecting plane and namely shield on the body back side, the described screen body back side is useful on the printing-ink that covers touch device along brushing on the acoustic energy propagates path direction, make the back side of screen body be printed as opaque state along the acoustic energy propagates path direction by printing-ink, strengthen the acoustic energy propagates intensity on the described screen body, face of minimizing acoustic energy is transferred to the energy loss on another face, and be arranged in the touch area and face on the projecting plane without any touch device, be transferred to touch face by backside reflection acoustic energy, can realize the purpose of the complete non-blind area of touch face, the mode by the touch area cascade increases described effective touch area.The described screen body back side comprises that plane and described plane and place, described touch area face namely shield the transition face between the body front, and described transducer is installed in the angle position of screen body.
Above-mentioned transducer is provided with 8, and on average is arranged on four angle positions of printing-ink frame on the screen body; Described reflector element array is provided with 8, and on average is arranged on the screen body printing-ink frame all around; Described transducer, reflector element array and printing-ink frame are arranged on the plane at the same described screen body back side.
Described screen body is by the mode screen capable of enlarging effective touch zone territory of touch area subregion cascade: replace an original reflector element array with one group of reflector element array, and increase corresponding transducer setting, thereby the effective zoning of large-sized touch is divided into the small size touch effective coverage of a plurality of cascades.
As preferably, being arranged on reflector element array on the described printing-ink frame in the same side is respectively to be listed as by dredging to solid matter from two ends to centre display density.
As preferably, be provided with the printing-ink frame for the brushing printing-ink around the described screen body back side, described touch device is arranged on the printing-ink frame.
As preferably, described transition face is the rounding off face, and the arc radius of described rounding off face is half of screen body thickness.In addition, the arc radius of above-mentioned rounding off face also can be random length.
As preferably, transition face is set to oval transition face, and the radius of the radian of described oval transition face is designed to random length.
As preferably, transition face can be set to inclined-plane or trapezoidal faces.In addition, described transition face also can be set to polished surface or cloudy surface.
As preferably, described transition face is combined crest line with the face at the described screen body back side and place, touch area be smooth transition, reduces scattering and decay in the acoustic energy propagates process.
As preferably, described reflector element array along acoustic energy propagates path direction and approach axes to angle be that 135 ± 5 degree are arranged, guarantee that acoustic energy outwards propagates along described screen body after described reflection strip reflection.
As preferably, described reflector element array is outwards propagated along described screen body after described reflection strip reflection to guarantee acoustic energy along acoustic energy propagates path direction and approach axes to being designed to other angles.
As preferably, described screen body front along the acoustic energy propagates path direction be the touch area around brush described printing-ink, make that the screen body is positive to be opaque state.
Above-mentioned printing-ink printing can be covered the touch device at the described screen body back side, makes to face the projecting plane from the touch area and can't see any touch device; And described printing-ink printing material can strengthen the acoustic energy propagates intensity on the described screen body, and face of minimizing acoustic energy is transferred to the energy loss on another face.
The utility model compared with prior art, its beneficial effect is as follows:
1, the utility model is by being placed on transducer, reflection strip and touch screen signal line at the back side of touch face, reverse design by striped, make the acoustic energy of reflection walk around screen body edge, the back side at the coupling touch device forms the face that touches completely, be transferred to touch face by backside reflection acoustic energy, can realize the complete non-blind area of touch face, guarantee touch screen performance.
2, touch assembly at the back side of touch area, and be positioned on the printing-ink, face the projecting plane in the touch area, can't see any touch device, really realize the Rimless design.
3, the screen body back side promotes the acoustic energy energy by printing-ink, strengthens the acoustic energy propagates intensity on the screen body, and face of minimizing acoustic energy is transferred to the energy loss on another face, has guaranteed that touch screen performance is unaffected.
4, come the screen capable of enlarging effective touch zone territory by cascade subregion touch area, namely replace an original reflector element array with one group of reflector element array, and increase corresponding transducer setting, thereby the small size that the effective zoning of large-sized touch is divided into a plurality of cascades touches the effective coverage, has realized the large scale surface acoustic wave touch screen.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the non-Petting Area perspective view of the utility model.
Fig. 2 is the utility model Petting Area front elevation.
Fig. 3 is the transition face synoptic diagram of the various shape of screen body of the present utility model.
Fig. 4 is the utility model Petting Area plane surface acoustic wave propagation path planimetric map.
Fig. 5 is non-Petting Area plane surface acoustic wave propagation path structural representation among the embodiment of the present utility model.
Fig. 6 is cross-sectional view of the present utility model.
Fig. 7 is non-Petting Area surface acoustic wave propagate path profile synoptic diagram in the example of the present utility model.
Fig. 8 is non-Petting Area surface acoustic wave propagate path profile synoptic diagram in another example of the present utility model.
Fig. 9 is the utility model reflector element array modular design angle synoptic diagram.
Figure 10 is the M enlarged drawing of Fig. 9.
Figure 11 is traditional case of non-partitioned cascade touch-screen reflector element array modular design synoptic diagram.
Be labeled as among the figure: 1, the screen body, 2, the first transducer, 3, the second transducer, 4, the 3rd transducer, 5, the 4th transducer, 6, the 5th transducer, 7, the 6th transducer, 8, the 7th transducer, 9, the 8th transducer, 10, the first reflector element array, 11, the second reflector element array, 12, the 3rd reflector element array, 13, the 4th reflector element array, 14, the 5th reflector element array, 15, the 6th reflector element array, 16, the 7th reflector element array, 17, the 8th reflector element array, 18, printing-ink, 19, the touch area, 20, transition face.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
As shown in Figure 1 and Figure 2, the cascade subregion surface acoustic wave touch screen that a kind of touch device of present embodiment is concealed, it comprises screen body 1 and is arranged on screen body 1 faces touch area 19 on the projecting plane, touch area 19 touches partitioned mode by cascade and increases the touch scope, namely replace an original reflector element array with one group of reflector element array, and increase corresponding transducer setting, thereby the small size that the effective zoning of large-sized touch is divided into a plurality of cascades touches the effective coverage, has realized the large scale surface acoustic wave touch screen.
At the screen body back side transducer, reflector element array and printing-ink frame 18 are installed, transducer, reflector element array and touch screen signal line consist of touch device, this touch device is coupling in the touch area and faces the back side, projecting plane and namely shield on the body back side, and the screen body back side comprises the transition face 20 between plane and described plane and place, the described touch area face; In the present embodiment, transducer and reflector element array are provided with 8, are respectively the first transducer 2, the second transducer 3, the 3rd transducer 4, the 4th transducer 5, the 5th transducer 6, the 6th transducer 7, the 7th transducer 8, the 8th transducer 9, the first reflector element array 10, the second reflector element array 11, the 3rd reflector element array 12, the 4th reflector element array 13, the 5th reflector element array 14, the 6th reflector element array 15, the 7th reflector element array 16 and the 8th reflector element array 17.Above-mentioned transducer, reflector element array 1 and printing-ink frame 18 are positioned at same plane, namely all are arranged on the plane at the same screen body back side.
Referring to Fig. 5 to Fig. 7, the acoustic energy of each transducer emission of present embodiment is walked around transition face 20 after each reflector element array reflection, in the positive touch area 19 that forms of screen body.Referring to Fig. 3, the transition face 20 of present embodiment is the rounding off face, and the circular arc optimum radius of this rounding off face is set to shield half of body thickness.But be not limited to present embodiment, the arc radius of above-mentioned rounding off face also can be random length.In addition, this transition face 20 also can be set to oval transition face, inclined-plane, trapezoidal faces, polished surface or cloudy surface, and this transition face is combined crest line with the face at screen the body back side and place, touch area be smooth transition, reduces scattering and decay in the acoustic energy propagates process.
Referring to Fig. 1, Fig. 5 and Fig. 6, around the screen body back side, be fixed with the printing-ink frame for the brushing printing-ink, the first transducer 2, the second transducer 3, the 3rd transducer 4, the 4th transducer 5, the 5th transducer 6, the 6th transducer 7, the 7th transducer 8 and the 8th transducer 9 are installed in respectively the corner location of printing-ink frame, namely shield body back side corner location, present embodiment the first transducer 2 and the second transducer 3 are positioned at same corner, the 3rd transducer 4 and the 4th transducer 5 are positioned at same corner, the 5th transducer 6 and the 6th transducer 7 are positioned at same corner, and the 7th transducer 8 and the 8th transducer 9 are positioned at same position; This first reflector element array 10, the second reflector element array 11, the 3rd reflector element array 12, the 4th reflector element array 13, the 5th reflector element array 14, the 6th reflector element array 15, the 7th reflector element array 16 and the 8th reflector element array 17 are separately positioned on the printing-ink frame, namely shield the body back side around, wherein the first reflector element array 10 is listed on the same straight flange in the screen body back side to white-out by close with the second reflector element array 11 to close by thin, and the 3rd reflector element array 12 is shielded on another straight flange with respect to the first reflector element array 10 and the second reflector element array 11 of the body back side by close being listed in to white-out with the 4th reflector element array 13 to close by thin; The 5th reflector element array 14 is listed on the same straight flange in the screen body back side to white-out by close with the 6th reflector element array 15 to close by thin, and the 7th reflector element array 16 is shielded on another straight flange with respect to the 5th reflector element array 14 and the 6th reflector element array 15 of the body back side by close being listed in to white-out with the 8th reflector element array 17 to close by thin; Be to be coated with along the acoustic energy propagates path direction on the printing-ink frame to be brushed with printing-ink 18 at the back side of screen body, being used for covering touch device is each transducer, reflector element array and touch screen signal line, making the back side of screen body by printing-ink 18 is opaque state along the acoustic energy propagates path direction, simultaneously, shielding the body front along the same brushing printing-ink 18 of acoustic energy propagates path direction, make screen body front along the acoustic energy propagates path direction be the touch area around be opaque state (referring to Fig. 2 and Fig. 4), but the touch device of present embodiment by the printing-ink 18 shadow mask body back sides makes from the touch area 19 the projecting plane of facing can't see any touch device; And the printing material of printing-ink 18 can strengthen the acoustic energy propagates intensity on the screen body, and face of minimizing acoustic energy is transferred to the energy loss on another face.
Referring to Fig. 5 to Figure 11, the reflector element array along acoustic energy propagates path direction and approach axes to optimum angle a be that 135 ± 5 degree are arranged, in addition, the reflector element array is along acoustic energy propagates path direction and approach axes to also being designed to other angles, guarantees that acoustic energy outwards propagates along the screen body after described reflection strip reflection.In addition, in the utility model, the employing reverse design of reflector element array only, the screen body of touch screen processing technology is identical with general surface acoustic wave touching screen processing technology, does not increase the complicacy of production.
Touch assembly in the touch area 19 the back side, and be positioned on the printing-ink 18, face the projecting plane in the touch area, can't see any touch device, really realize the Rimless design.And shield the body back side by printing-ink lifting acoustic energy energy, and strengthening the acoustic energy propagates intensity on the screen body 1, face of minimizing acoustic energy is transferred to the energy loss on another face, has guaranteed that touch screen performance is unaffected.
The utility model overcomes the problems referred to above that existing surface acoustic wave touch screen system exists, by with transducer, the back side that reflection strip and touch screen signal line are placed on touch face hides, reverse design by striped, make the acoustic energy of reflection walk around screen body edge, the back side at the coupling touch device forms the face that touches completely, with the acoustic energy propagates intensity that strengthens on the described screen body, face of minimizing acoustic energy is transferred to the energy loss on another face, and be arranged in the touch area and face on the projecting plane without any touch device, be transferred to touch face by backside reflection acoustic energy, can realize the purpose of the complete non-blind area of touch face.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.