CN2519331Y

CN2519331Y - Surface sound wave touch screen for increase effective touch district through touch district step enlargement

Info

Publication number: CN2519331Y
Application number: CN 02221458
Authority: CN
Inventors: 钟德超
Original assignee: GeneralTouch Tech Co Ltd
Current assignee: CHENGDU GENERAL TOUCH TECHNOLOGY Co.,Ltd.
Priority date: 2002-01-30
Filing date: 2002-01-30
Publication date: 2002-10-30
Anticipated expiration: 2012-01-30

Abstract

The utility model relates to a surface sound wave touching screen concatenated increasing effective touching area via a touching area, in which the surface of screen 1 is provided with five or more than five receiving converters 3 (or receiving substrate 5, guiding stripe 7 ) and a projecting transducers 4 (or projecting substrate 6, guiding stripe ), on the periphery of the glass-made screen five or more than five corresponding exact reflection stripes 2 from thinning to dense which have the angle of 45 degree are curved, the thinning end of the reflection stripe 2 has the angle of 90 degree with the receiving converter 3, 4 or substrate 5, 6, and the effective touching area of the utility model is concatenated increased and the area of the surface sound wave touching screen is larger than that of the present touching screen so the needs of users for large screens have been satisfied.

Description

Increase the surface acoustic wave touch screen of effective Petting Area by the touch area cascade

Technical field:

The utility model relates to a kind of computer screen display technique, particularly a kind of surface acoustic wave touch screen that increases effective Petting Area by the touch area cascade.

Background technology:

Existing surface acoustic wave touch screen, screen the body upper left corner and the lower right corner have been installed one respectively vertically and the ultrasound transmitting transducer of horizontal direction, and two corresponding ultrasound wave receiving transducers have then been installed in the upper right corner; Four peripheries of screen body then are carved with 45 degree by dredging four very accurate reflection strips of close spacing, the ultrasonic propagation direction of existing surface acoustic wave touch screen can only be propagated along a propagation regions, last all propagating in the upper right corner receiving transducer that shields body, because touch-screen is a propagation regions only, the touch area of touch-screen is restricted, needing to be not suitable for the industry and the place of giant-screen, be unfavorable for the centralized management and the running of information, reduce work efficiency, increased user's cost.

Summary of the invention:

The technical problems to be solved in the utility model: provide a kind of receiving transducer (or receiving substrate) and transmitting transducer (or emission substrate) of on the screen body, increasing, increase the surface acoustic wave touch screen of effective Petting Area by the touch area cascade.

The technical solution of the utility model:

Reflection strip 2 on screen body 1 is to be made of the virgule of dredging close miter angle a kind of, and reflection strip 2 thin ends are with receiving transducer 3. transmitting transducers 4 or accept 6 one-tenth an angle of 90 degrees of substrate 5. emission substrates, and close end does not have transducer or substrate.The mounted on surface of screen body 1 has receiving transducer 3 (or receiving substrate 5 guiding stripeds 7) and the transmitting transducer 4 (or launching substrate 6, guiding striped 7) more than five or five.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 9, Figure 10, Figure 11, shown in Figure 12, receiving transducer 3 on the touch-screen (or receives substrate 5, guiding striped 7) and transmitting transducer 4 (or emission substrate 6, guiding striped 7) can be installed in the corner location of screen body, also can be installed in the centre position, surrounding of shielding body 1.Wherein, described emission substrate 6 and receive the back side that substrate 5 is installed in screen body 1, the front of screen body 1 with receive substrate 5 and emission substrate 6 corresponding positions are equipped with guiding striped 7.

As Fig. 5, Fig. 6, Fig. 7, shown in Figure 8, also can be processed with installation inclined-plane and mounting groove, the plane, preceding transverse plane surrounding that its degree of depth is enough to that receiving transducer 3 and transmitting transducer 4 are not exposed shields body 1 at four jiaos of screen body 1 and the position of surrounding installation receiving transducer 3 and transmitting transducer 4.Such mounting means is difficult for hitting transducer or substrate when touching.

Principle of work of the present utility model: when display screen was not touched, received signal was with just the same with reference to waveform; When the finger touch display screen, finger part energy, two transmitting transducers 4 close with the touch point (or emission substrate 6) are the electrical signal conversion that is produced by controller that ultrasound wave sends, ultrasound wave is propagated from the nearer travel path of receiving transducer 3 (or receiving substrate 5) via the reflection strip 2 of the correspondence direction of arrow in the figure, absorb by receiving transducer 3 (or receiving substrate 5) at last, it sends the signal process screen line that absorbs to the controller of touch system, needed signal pattern when going out finger touch again after controller is handled the signal of receiving by analysis again.

Beneficial effect:

Increase by effective touch area cascade, effective Petting Area area of surface acoustic wave touch screen has satisfied needs giant-screen requirement of client greater than existing touch-screen area.

The drawing explanation:

Fig. 1 is installed in the front view of the ultrasonic touch screen of four jiaos of screen bodies for receiving transducer and transmitting transducer.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is installed in the front view of the ultrasonic touch screen in four jiaos of bodies of screen and centre position, surrounding for receiving transducer and transmitting transducer.

Fig. 4 is a left view for Fig. 3.

Fig. 5 is that receiving transducer and transmitting transducer are installed in the front view that the screen body has four jiaos the ultrasonic touch screen that the inclined-plane is installed.

Fig. 6 is the left view of Fig. 5.

Fig. 7 is that receiving transducer and transmitting transducer are installed in four jiaos and the middle front view that the ultrasonic touch screen of mounting groove is arranged in surrounding that the screen body has the installation inclined-plane.

Fig. 8 is the left view of Fig. 7.

Fig. 9 is for receiving the front view that substrate and launching base sheet are loaded on the ultrasonic touch screen of four jiaos of screen bodies.

Figure 10 is the left view of Fig. 9.

Figure 11 is loaded on the front view that the middle ultrasonic touch of four jiaos of bodies of screen and surrounding shields for receiving substrate and launching base sheet.

Figure 12 is the left view of Figure 11.

Wherein: 1, screen body; 2, reflection strip; 3, receiving transducer; 4, transmitting transducer; 5, receive substrate; 6, emission substrate; 7, guiding striped.

Embodiment:

As Fig. 7, shown in Figure 8, a transmitting transducer 4 is installed in the upper left corner at screen body 1, the upper right corner is installed one and is received only transducer 3, transmitting transducer 4, the lower right corner is installed one and is received only transducer 3, in the middle of the top of screen body 1 and the left transmitting transducer 4 is installed respectively, below and right-hand centre are respectively installed one and are received only transducer 4; Have installation inclined-plane and mounting groove in the position of installation receiving transducer 3 and transmitting transducer 4, its degree of depth makes the receiving transducer 3 of bonding and transmitting transducer 4 not expose preceding transverse plane of screen body and plane, surrounding; Between the surrounding of display screen receiving transducer 3 and transmitting transducer 4, be carved with miter angle, by dredging eight very accurate reflection strips 2 of close spacing, the thin end of reflection strip 2 becomes an angle of 90 degrees with receiving transducer 3. transmitting transducers 4 (or accepting substrate 5. emission substrates 6), and close end does not have transducer or substrate.When the finger touch display screen, finger portion of energy, reflection transducer 4 sends ultrasound wave, ultrasound wave is absorbed by receiving transducer 3 via two relative reflection strip reflection 2 backs along the arrow shown in the figure, receiving transducer 3 passes to the controller of touch system with the signal that absorbs through the screen line again, controller with the signal received by analysis with handle after required signal when sending finger touch again.

Claims

1, a kind of surface acoustic wave touch screen that increases effective Petting Area by the touch area cascade, constitute by screen body and transducer or substrate fixed thereon, reflection strip is carved with in the surrounding on the screen body glass screen, it is characterized in that: the reflection strip (2) on screen body (1) is to be made of to close miter angle virgule by dredging a kind of, reflection strip (2) is dredged end and receiving transducer (3). transmitting transducer (4) or reception substrate (5). and emission substrate (6) becomes an angle of 90 degrees, and close end does not have transducer or substrate.

2. as claimed in claim 1ly increase the surface acoustic wave touch screen of effective Petting Area, it is characterized in that: be installed in the receiving transducer (3) on the screen body (1) or receive substrate (5), guiding striped (7) and transmitting transducer (4) or emission substrate (6), the striped (7) that leads are more than five or five by the touch area cascade.

3, as claimed in claim 1 or 2ly increase the surface acoustic wave touch screen of effective Petting Area, it is characterized in that: described receiving transducer (3) or receive substrate (5), guiding striped (7) and transmitting transducer (4) or emission substrate (6), guiding striped (7) are installed in four jiaos that shield body (1) by the touch area cascade.

4, as claimed in claim 3ly increase the surface acoustic wave touch screen of effective Petting Area, it is characterized in that: described receiving transducer (3) or receive substrate (5), guiding striped (7) and transmitting transducer (4) or emission substrate (6), guiding striped (7) are installed in four jiaos and the centre position, surrounding of shielding body (1) by the touch area cascade.

5, the surface acoustic wave touch screen that increases effective Petting Area by the touch area cascade as claimed in claim 4, it is characterized in that: receiving transducer (3) and transmitting transducer (4) are installed in the front of screen body (1), and be processed with in its installation site inclined-plane and mounting groove are installed, its degree of depth is enough to make receiving transducer (3) and transmitting transducer (4) not to expose the preceding transverse plane and the plane, surrounding of shielding body (1).

6, the surface acoustic wave touch screen that increases effective Petting Area by the touch area cascade as claimed in claim 4, it is characterized in that: receive the back side that substrate (5) and emission substrate (6) are installed in screen body (1), guiding striped (7) is being installed with the anterior locations that receives substrate (5) and emission substrate (6) corresponding screen bodies (1).