CN202870786U - Ultrasonic sensing touch screen - Google Patents
Ultrasonic sensing touch screen Download PDFInfo
- Publication number
- CN202870786U CN202870786U CN 201220556316 CN201220556316U CN202870786U CN 202870786 U CN202870786 U CN 202870786U CN 201220556316 CN201220556316 CN 201220556316 CN 201220556316 U CN201220556316 U CN 201220556316U CN 202870786 U CN202870786 U CN 202870786U
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- ultrasonic sensing
- ultrasonic
- touch panel
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Abstract
The utility model relates to a display screen, in particular to an ultrasonic sensing touch screen. The ultrasonic sensing touch screen comprises a touch panel. An outer frame is arranged on the outer side of the touch panel. Two groups of ultrasonic sensing devices are arranged on the outer frame. Each group of ultrasonic sensing devices comprises an ultrasonic transmitting sensor and an ultrasonic receiving sensor. An ultrasonic transmitting-receiving area of the first group of ultrasonic sensing devices is a, and an ultrasonic transmitting-receiving area of the second group of ultrasonic sensing devices is b. The area a and the area b form a transmitting-receiving intersection area of the two groups of ultrasonic sensing devices. The touch panel is arranged in the transmitting-receiving intersection area. With the structure, when an object touches any point on the touch panel, the touching object can hinder ultrasonic transmitting of the point, receiving sensitivity of the two groups of sensors is attenuated, and then the position of the touched point can be obtained through a controller.
Description
Technical field
The utility model relates to a kind of indicator screen, particularly a kind of touch-screen.
Background technology
Along with the development of electronics industry, the application of touch-screen is more and more wider.Touch-screen is broadly divided into resistance-type, condenser type, infrared-type and surface acoustic wave type, shortcoming is separately arranged, touch screens easily scratches, capacitance plate drift is serious, and the surface acoustic wave screen requires to material that very high cost is expensive, and is only applicable to small-sized touch-screen, and the large-scale touch-screen of present stage is mainly used infrared screen, but limitation is very large, and resolution is low, and stability is bad.
As shown in Figure 1, present stage, large-scale infrared touch panel comprised touch panel 101, in touch panel 101 fronts housing is installed, the both sides of housing are respectively arranged with infrared emission tube 102 and infrared receiver tube 103 in the horizontal direction, and the both sides of housing are respectively arranged with infrared emission tube 104 and infrared receiver tube 105 too in vertical direction.Such two groups of infrared ray launches and receives pipes form the infrared ray matrix that anyhow intersects.When touch was arranged, touch object (circle among Fig. 1) can block the anyhow infrared ray through this point, judges touch location by controller.
The resolution of infrared touch panel is determined by the infrared tube number that can hold in the framework, so resolution is lower.Infrared touch panel comes work by many to infrared emission and receiving tube, nearly 100 pairs or more of the numbers of use infrared sensor, and shared peripheral circuit, this just requires the own performance of sensor not only nearly well also to require light resistance characteristic and the junction capacity of 100 pairs or more infrared diodes all to be consistent, overall life is difficult to be consistent and cost and costliness thereof in the practical application, the maintaining difficulty is high, and maintenance cost is high.
Summary of the invention
The utility model technical issues that need to address provide the large-scale touch-screen that a kind of cost is low and resolution is high.
For solving above-mentioned technical matters, ultrasonic sensing touch-screen of the present utility model comprises touch panel, described touch panel arranged outside has housing, be provided with two groups of ultrasonic sensing devices on the described housing, described every group of ultrasonic sensing device all comprises ultrasound wave emission sensor and ultrasound wave receiving sensor; Described first group of ultrasonic sensing device ultrasound wave emission receiving area is a, second group of ultrasonic sensing device ultrasound wave emission receiving area is b, the emission that described regional a and b form two groups of ultrasonic sensing devices receives intersection area, and described touch panel is arranged on emission and receives in the intersection area.
Described housing is the rectangle housing, is provided with one group of ultrasonic sensing device on every group of diagonal angle of described rectangle housing.
After adopting said structure, because being in the emission of two groups of ultrasonic sensing devices, touch panel receives in the intersection area, when on the object contact touch panel during any point, touch objects is known from experience the ultrasonic transmission that hinders this point, make the decay of two sensors receiving sensitivity, then draw the position of touch point by controller.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is the principle schematic of prior art infrared touch panel.
Fig. 2 is the principle schematic of the utility model ultrasonic sensing touch-screen.
Fig. 3 is the emission receiving area schematic diagram of first group of sonac of the utility model.
Fig. 4 is the emission receiving area schematic diagram of second group of sonac of the utility model.
Fig. 5 is that the emission of two groups of sonacs of the utility model receives the intersection area schematic diagram.
Fig. 6 is that ultrasonic sensor and the touch-screen relative position of the utility model ultrasonic sensing touch-screen changes schematic diagram.
Among the figure: 101 is touch panel, and 102 is infrared emission tube, and 103 is infrared receiver tube, and 104 is infrared emission tube, and 105 is infrared receiver tube
201 is touch panel, and 202 is housing, and 203 is the ultrasound wave emission sensor, and 204 is the ultrasound wave receiving sensor, and 205 is the ultrasound wave emission sensor, and 206 is the ultrasound wave receiving sensor, and 207 are emission reception intersection area
Embodiment
As shown in Figure 2, ultrasonic sensing touch-screen of the present utility model comprises touch panel 201, described touch panel 201 arranged outside have housing 202, be provided with two groups of ultrasonic sensing devices on the described housing 202, described every group of ultrasonic sensing device all comprises ultrasound wave emission sensor and ultrasound wave receiving sensor.
Here housing 202 is the rectangle housing, be provided with one group of ultrasonic sensing device on every group of diagonal angle of described rectangle housing, i.e. totally two groups of ultrasonic sensing devices on two groups of diagonal angles, first group of ultrasonic sensing device comprises that ultrasound wave emission sensor 203 and 204, the second groups of ultrasonic sensing devices of ultrasound wave receiving sensor comprise ultrasound wave emission sensor 205 and ultrasound wave receiving sensor 206.As shown in Figure 3, described first group of ultrasonic sensing device ultrasound wave emission receiving area is a, and namely to launch the zone that ultrasonic wave energy received by ultrasonic sensor 204 in housing be a to ultrasound wave emission sensor 203.As shown in Figure 4, described first group of ultrasonic sensing device ultrasound wave emission receiving area is a, and namely to launch the zone that ultrasonic wave energy received by ultrasonic sensor 206 in housing be b to ultrasound wave emission sensor 205.As shown in Figure 5, the emission that described regional a and b form two groups of ultrasonic sensing devices receives intersection area 207, namely should emission receive in the intersection area 207, the ultrasonic wave energy of ultrasound wave emission sensor 203 emissions of first group of ultrasonic sensing device is received by ultrasound wave receiving sensor 204 again; The ultrasonic wave energy of ultrasound wave emission sensor 205 emissions of second group of ultrasonic sensing device is received by ultrasound wave receiving sensor 206.
As shown in Figure 6, in emission receives intersection area 207, can adjust the position of touch panel 201, touch panel 201 and the relative position of ultrasonic sensing device are changed, as long as guarantee that touch panel 201 is in emission receives intersection area 207.That is to say the position that two groups of ultrasonic sensing devices can arbitrarily be set on frame 201, is not the place, diagonal angle that must be arranged on housing, receives in the intersection area in the emission of two groups of sensing devices as long as guarantee touch panel 201.
Certainly, housing of the present utility model also can be selected other applicable shapes, and more than two groups, such conversion all dropped within the protection domain of the present utility model when the quantity of ultrasonic sensing device also can be selected.
Claims (2)
1. ultrasonic sensing touch-screen, comprise touch panel, described touch panel arranged outside has housing, it is characterized in that: be provided with two groups of ultrasonic sensing devices on the described housing, described every group of ultrasonic sensing device all comprises ultrasound wave emission sensor and ultrasound wave receiving sensor; Described first group of ultrasonic sensing device ultrasound wave emission receiving area is a, second group of ultrasonic sensing device ultrasound wave emission receiving area is b, the emission that described regional a and b form two groups of ultrasonic sensing devices receives intersection area, and described touch panel is arranged on emission and receives in the intersection area.
2. according to ultrasonic sensing touch-screen claimed in claim 1, it is characterized in that: described housing is the rectangle housing, is provided with one group of ultrasonic sensing device on every group of diagonal angle of described rectangle housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220556316 CN202870786U (en) | 2012-10-28 | 2012-10-28 | Ultrasonic sensing touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220556316 CN202870786U (en) | 2012-10-28 | 2012-10-28 | Ultrasonic sensing touch screen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202870786U true CN202870786U (en) | 2013-04-10 |
Family
ID=48037491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220556316 Expired - Lifetime CN202870786U (en) | 2012-10-28 | 2012-10-28 | Ultrasonic sensing touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202870786U (en) |
-
2012
- 2012-10-28 CN CN 201220556316 patent/CN202870786U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130410 |
|
| CX01 | Expiry of patent term |