CN103593093A - Touch display device and touch display realization method - Google Patents
Touch display device and touch display realization method Download PDFInfo
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- CN103593093A CN103593093A CN201210292644.3A CN201210292644A CN103593093A CN 103593093 A CN103593093 A CN 103593093A CN 201210292644 A CN201210292644 A CN 201210292644A CN 103593093 A CN103593093 A CN 103593093A
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Abstract
The invention discloses a touch display device which comprises a touch pen and a liquid crystal display panel. An ultrasonic wave generating device is arranged on the touch pen, and an ultrasonic wave receiving device is mounted in the liquid crystal display panel and connected with a touch point coordinate positioning device in a printed circuit board of the liquid crystal display panel. When the touch pen performs touch operation on the liquid crystal display panel, the ultrasonic wave generating device sends out an ultrasonic wave signal; the ultrasonic wave receiving device calculates distance between a touch point and the ultrasonic wave receiving device according to the received ultrasonic wave signal from the ultrasonic wave generating device, and sends distance information acquired by calculation to the touch point coordinate positioning device; the touch point coordinate positioning device determines coordinates of the touch point according to the distance information sent by the ultrasonic wave receiving device. The invention further discloses a touch display realization method. By the device and the method, accurate positioning of the touch point can be effectively realized.
Description
Technical field
The present invention relates to touch-control display technique, particularly a kind of touch control display apparatus and its implementation.
Background technology
At present, from adopted technology, classify, the kind of touch-screen mainly comprises: electric resistance touch screen, surface acoustic wave touch screen, infrared touch panel and capacitance touch screen.Wherein, the principle of surface acoustic wave touch screen is: utilize ultrasound wave in the propagation of dielectric surface, when having object contact, energy and the shape of sound wave change, thus perceived position; In addition the variable quantity of all right the 3rd direction of perception of surface acoustic wave touch screen.Surface acoustic wave touch screen can bear firmly larger touch, is comparatively adapted at public place application.
But, because existing surface acoustic wave technique is subject to the impact of external environment larger, in other words, the existing surface acoustic wave touch screen to external world noise ratio of environment is more responsive, therefore, when carrying out touch point location, the noise of external environment can produce interference, thereby can cause, to touch point, can not carry out comparatively accurate orientation problem.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of touch control display apparatus and its implementation, can effectively realize the accurate location of touch point.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of touch control display apparatus, comprise: pointer and display panels, in described pointer, be provided with ultrasonic generator, in described display panels, be mounted with ultrasonic probe, ultrasonic receiver, described ultrasonic probe, ultrasonic receiver is connected with the touch point coordinate locating device in described display panels; Wherein,
Described ultrasonic generator, for when described pointer is carried out touch control operation on described display panels, sends ultrasonic signal;
Described ultrasonic probe, ultrasonic receiver, for touch point being positioned according to the ultrasonic signal from described ultrasonic generator receiving, calculate the touch point of locating and arrive the distance of self, and the range information calculating is sent to described touch point coordinate locating device;
Described touch point coordinate locating device, for the range information sending according to ultrasonic probe, ultrasonic receiver, determines the coordinate of described touch point.
Wherein, the number of described ultrasonic probe, ultrasonic receiver is more than two.
Wherein, the number of described ultrasonic probe, ultrasonic receiver is three, and three formed triangles of described ultrasonic probe, ultrasonic receiver are isosceles triangle.
Wherein, in described pointer, be also provided with synchronization signal generating apparatus; Accordingly, in described display panels, be also mounted with synchronizing signal receiving trap; Described synchronizing signal receiving trap is connected with described touch point coordinate locating device; Wherein,
Described synchronization signal generating apparatus for when described pointer is carried out touch control operation on described display panels, sends synchronizing signal simultaneously;
Described synchronizing signal receiving trap, for receiving after the synchronizing signal from described synchronizing signal dispensing device, sends synchronizing signal to described touch point coordinate locating device;
Described touch point coordinate locating device, also determines the operation of coordinate of described touch point and synchronizeing of the touch control operation of described pointer for the synchronizing signal that adopts synchronizing signal receiving trap to send.
Wherein, described synchronization signal generating apparatus is infrared generator or Bluetooth signal generating means; Accordingly, described synchronizing signal receiving trap is infrared receiver or Bluetooth signal receiving trap.
Wherein, described ultrasonic probe, ultrasonic receiver and described synchronizing signal receiving trap are connected with described touch point coordinate locating device by connector.
Wherein, described touch point coordinate locating device, is further used for receiving after described range information, and in its data storehouse, whether inquiry has described range information, if there is described range information, extracts the coordinate that described range information is corresponding and be defined as the coordinate of described touch point.
A touch-control Display Realization method for any one touch control display apparatus, the method comprises:
Described ultrasonic probe, ultrasonic receiver, according to the ultrasonic signal of described ultrasonic generator, calculates touch point to the distance of self;
The touch point coordinate locating device of described display panels is the distance to described ultrasonic probe, ultrasonic receiver according to described touch point, determines the coordinate of described touch point.
Wherein, described touch point coordinate locating device is the distance to described ultrasonic probe, ultrasonic receiver according to described touch point, determines the coordinate of described touch point, for:
Receive after the range information that ultrasonic probe, ultrasonic receiver sends, whether inquiry has described range information in its data storehouse, if there is described range information, extracts the coordinate that described range information is corresponding and be defined as the coordinate of described touch point.
Wherein, the method also comprises:
After the synchronizing signal that the described synchronization signal generating apparatus that described synchronizing signal receiving trap is received sends simultaneously, to described touch point coordinate locating device, send synchronizing signal;
The described synchronizing signal that adopts described touch point coordinate locating device realizes definite operation of coordinate of described touch point and synchronizeing of the touch control operation of described pointer.
Touch control display apparatus provided by the invention and its implementation are provided with ultrasonic generator in pointer, are mounted with ultrasonic probe, ultrasonic receiver in display panels, and ultrasonic probe, ultrasonic receiver is connected with touch point coordinate locating device; When pointer is carried out touch control operation on display panels, ultrasonic generator sends ultrasonic signal; Ultrasonic probe, ultrasonic receiver positions touch point according to the ultrasonic signal from ultrasonic generator receiving, and calculates the touch point of locating and arrives the distance of self, and the range information calculating is sent to touch point coordinate locating device; Touch point coordinate locating device, according to the range information of ultrasonic probe, ultrasonic receiver transmission, is determined the coordinate of described touch point.Because prior art is to adopt surface acoustic wave touch screen, the sound wave vibrations that can cause the noise by external environment are more responsive, and the present invention is different from prior art, adopt ultrasonic probe, ultrasonic receiver to position touch point, so be not subject to the impact of external environment noise, thereby can effectively realize the accurate location of touch point.
In addition, in the present invention, in pointer, be also provided with synchronization signal generating apparatus, corresponding, in display panels, be also mounted with synchronizing signal receiving trap; Described synchronizing signal receiving trap is connected with described touch point coordinate locating device; When pointer is carried out touch control operation on display panels, synchronization signal generating apparatus sends synchronizing signal simultaneously, synchronizing signal receiving trap is received after the synchronizing signal from synchronizing signal dispensing device, to touch point coordinate locating device, send synchronizing signal, the synchronizing signal that touch point coordinate locating device adopts synchronizing signal receiving trap to send, determine the operation of coordinate of described touch point and synchronizeing of the touch control operation of pointer, so, can effectively realize the accurate synchronization of touch point.
In addition, technical scheme provided by the invention need to not attach contact panel on display panels, so, can improve the light transmission rate of display panels, thereby save the energy consumption of display panels.
Accompanying drawing explanation
Fig. 1 is touch control display apparatus structural representation of the present invention;
Fig. 2 is embodiment touch control display apparatus structural representation;
Fig. 3 is touch-control Display Realization method flow schematic diagram of the present invention.
Description of reference numerals:
11--pointer; 12--display panels; 111--ultrasonic generator; 112--synchronization signal generating apparatus; 121--ultrasonic probe, ultrasonic receiver; 122--synchronizing signal receiving trap; 123--PCB; 124--connector; 1231--touch point coordinate locating device.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is further described in more detail.
Touch control display apparatus of the present invention, as shown in Figure 1, this device comprises: pointer 11 and display panels 12; In pointer 11, be provided with ultrasonic generator 111, be mounted with ultrasonic probe, ultrasonic receiver 121 in display panels 12, the touch point coordinate locating device 1231 in the PCB 123 of ultrasonic probe, ultrasonic receiver 121 and display panels is connected; Wherein,
Ultrasonic generator 111, for when pointer 11 is carried out touch control operation on display panels 12, sends ultrasonic signal;
Ultrasonic probe, ultrasonic receiver 121, for touch point being positioned according to the ultrasonic signal from ultrasonic generator 111 receiving, calculate the touch point of locating and arrive the distance of self, and the range information calculating is sent to touch point coordinate locating device 1231;
Wherein, the touch point that described calculating is located adopts ultrasonic ranging mode to the distance of self, and the specific formula for calculation of ultrasonic ranging mode is: L=C * T; The distance length of L for measuring in this computing formula; C is the aerial velocity of propagation of ultrasound wave, is generally 340m/s; T is the mistiming that measuring distance is propagated, and is generally transmitting ultrasound wave to receiving half of ultrasound wave institute spended time value;
Touch point coordinate locating device 1231, for the range information sending according to ultrasonic probe, ultrasonic receiver 121, determines the coordinate of described touch point.
Wherein, the number of described ultrasonic probe, ultrasonic receiver 121 can be specifically more than two, and preferably, the number of described ultrasonic probe, ultrasonic receiver 121 is three, like this, can on the basis saving production cost, accurately realize the three-dimensional localization to touch point.
In described pointer 11, be also provided with synchronization signal generating apparatus 112, corresponding, in described display panels 12, be also mounted with synchronizing signal receiving trap 122; Described synchronizing signal receiving trap 122 is connected with described touch point coordinate locating device 1231; Wherein,
Synchronization signal generating apparatus 112 for when pointer 11 is carried out touch control operation on display panels 12, sends synchronizing signal simultaneously;
Synchronizing signal receiving trap 122, for receiving after the synchronizing signal from synchronizing signal dispensing device 112, sends synchronizing signal to touch point coordinate locating device 1231;
Described touch point coordinate locating device 1231, also determines the operation realization of coordinate of described touch point and synchronizeing of the touch control operation of pointer 11 for the synchronizing signal that adopts synchronizing signal receiving trap 122 to send.
Here, described synchronization signal generating apparatus 112 can be specifically infrared generator, and corresponding, described synchronizing signal receiving trap 122 can be specifically infrared receiver; Or described synchronization signal generating apparatus 112 can be Bluetooth signal generating means, corresponding, described synchronizing signal receiving trap 122 can be Bluetooth signal receiving trap.
Described ultrasonic probe, ultrasonic receiver 121 and described synchronizing signal receiving trap 122 are connected with described touch point coordinate locating device 1231 by connector; Here, described connector can adopt any one in existing connector.
Described touch point coordinate locating device 1231, at the range information sending according to ultrasonic probe, ultrasonic receiver 121, calculates the coordinate time of described touch point, specifically for:
The range information of receiving is mated with the range information in the database of self preserving, by coordinate corresponding to the range information matching, as the coordinate of described touch point.
Here, the coordinate of described touch point comprises: the coordinate figure of X-axis and Y-axis.
Below in conjunction with embodiment, the present invention is described in further detail again.
The touch control display apparatus that the present embodiment provides, as shown in Figure 2, in pointer 11, be provided with a ultrasonic generator 111 and a synchronization signal generating apparatus 112, on the position at four angles in display panels 12, be mounted with three ultrasonic probe, ultrasonic receivers 121 and a synchronizing signal receiving trap 122, the touch point coordinate locating device 1231 in the PCB 123 of ultrasonic probe, ultrasonic receiver 121 and synchronizing signal receiving trap 122 and display panels is connected by connector 124.Wherein, in the present embodiment, described synchronization signal generating apparatus 112 is infrared generator, and corresponding, described synchronizing signal receiving trap 122 is infrared receiver.
The touch control display apparatus that the present embodiment provides, when pointer 11 Fluid Contacting LCD panel 12, that is: when carrying out touch control operation, ultrasonic generator 111 sends ultrasonic signal, now, three ultrasonic probe, ultrasonic receivers 121 are all received the ultrasonic signal that ultrasonic generator 111 sends, three ultrasonic probe, ultrasonic receivers 121 are respectively according to the ultrasonic signal receiving, calculate touch point to the distance of self, and the range information calculating is sent to touch point coordinate locating device 1231, here, suppose that touch point that three ultrasonic probe, ultrasonic receivers 121 calculate is respectively D1 to the distance of self, D2 and D3, touch point coordinate locating device 1231 is received after the range information of three ultrasonic probe, ultrasonic receivers, 121 transmissions, that is: receive D1, after D2 and D3, by D1, D2 and D3 mate with the range information of self preserving, by the D1 matching, the coordinate that D2 and D3 are corresponding, coordinate (X as described touch point, Y).
When practical application, for the corresponding relation of the coordinate of the range information that makes to preserve in database and the point on display panels simpler, be convenient to draw the coordinate of touch point, can make three formed triangles of ultrasonic probe, ultrasonic receiver 121 settling is isosceles triangle.
Based on said apparatus, the present invention also provides a kind of touch-control Display Realization method, and as shown in Figure 3, the method comprises the following steps:
Step 301: when the pointer that is provided with ultrasonic generator is carried out touch control operation on inside is provided with the display panels of ultrasonic probe, ultrasonic receiver, described ultrasonic probe, ultrasonic receiver, according to the ultrasonic signal of described ultrasonic generator, calculates touch point to the distance of self;
Step 302: the touch point coordinate locating device of described display panels is the distance to described ultrasonic probe, ultrasonic receiver according to touch point, determines the coordinate of described touch point;
Particularly, the range information by the described touch point of receiving to described ultrasonic probe, ultrasonic receiver mates with the range information in the database of self preserving, by coordinate corresponding to the range information matching, as the coordinate of described touch point.Here, realize this matching operation and determine that this coordinate is: touch point coordinate locating device is received after the range information of ultrasonic probe, ultrasonic receiver transmission, touch point coordinate locating device is inquired about and whether is had described range information in its data storehouse, if there is described range information, extracts the coordinate that described range information is corresponding and be defined as the coordinate of described touch point.
Here, need the resolution according to described display panels, precompute the coordinate of each point on display panels and the corresponding relation that this point arrives the distance of each ultrasonic probe, ultrasonic receiver arranging, and be kept in the database of described touch point coordinate locating device, when touch point coordinate locating device is received after the range information of each ultrasonic probe, ultrasonic receiver transmission, each range information is mated with the range information in database, by the coordinate figure of the corresponding point of each range information matching, as the coordinate of described touch point.
Here, in described pointer, be also provided with synchronization signal generating apparatus, corresponding, in described display panels, be also provided with synchronizing signal receiving trap, when described pointer is carried out touch control operation, the method can further include:
After the synchronizing signal that the described synchronization signal generating apparatus that described synchronizing signal receiving trap is received sends simultaneously, to described touch point coordinate locating device, send synchronizing signal;
The described synchronizing signal that adopts described touch point coordinate locating device realizes definite operation of coordinate of described touch point and synchronizeing of the touch control operation of described pointer.
From description above, can find out, in technical scheme provided by the invention, what realize touch-control is the pointer that a brace has synchronization signal generating apparatus and ultrasonic generator, described pointer is when carrying out touch control operation, can launch ultrasonic signal and synchronizing signal simultaneously, by ultrasonic probe, ultrasonic receiver is installed in display panels, touch point is found range and locate, and by synchronizing signal receiving trap is installed in display panels, touch point is carried out synchronously, so, can effectively realize the accurate location of touch point and synchronous, thereby can accurately show.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (10)
1. a touch control display apparatus, comprise: pointer and display panels, it is characterized in that, in described pointer, be provided with ultrasonic generator, in described display panels, be mounted with ultrasonic probe, ultrasonic receiver, described ultrasonic probe, ultrasonic receiver is connected with the touch point coordinate locating device in described display panels; Wherein,
Described ultrasonic generator, for when described pointer is carried out touch control operation on described display panels, sends ultrasonic signal;
Described ultrasonic probe, ultrasonic receiver, for touch point being positioned according to the ultrasonic signal from described ultrasonic generator receiving, calculate the touch point of locating and arrive the distance of self, and the range information calculating is sent to described touch point coordinate locating device;
Described touch point coordinate locating device, for the range information sending according to ultrasonic probe, ultrasonic receiver, determines the coordinate of described touch point.
2. device according to claim 1, is characterized in that, the number of described ultrasonic probe, ultrasonic receiver is more than two.
3. device according to claim 2, is characterized in that, the number of described ultrasonic probe, ultrasonic receiver is three, and three formed triangles of described ultrasonic probe, ultrasonic receiver are isosceles triangle.
4. according to the device described in claim 1,2 or 3, it is characterized in that, in described pointer, be also provided with synchronization signal generating apparatus; Accordingly, in described display panels, be also mounted with synchronizing signal receiving trap; Described synchronizing signal receiving trap is connected with described touch point coordinate locating device; Wherein,
Described synchronization signal generating apparatus for when described pointer is carried out touch control operation on described display panels, sends synchronizing signal simultaneously;
Described synchronizing signal receiving trap, for receiving after the synchronizing signal from described synchronizing signal dispensing device, sends synchronizing signal to described touch point coordinate locating device;
Described touch point coordinate locating device, also determines the operation of coordinate of described touch point and synchronizeing of the touch control operation of described pointer for the synchronizing signal that adopts synchronizing signal receiving trap to send.
5. device according to claim 4, is characterized in that, described synchronization signal generating apparatus is infrared generator or Bluetooth signal generating means; Accordingly, described synchronizing signal receiving trap is infrared receiver or Bluetooth signal receiving trap.
6. device according to claim 4, is characterized in that, described ultrasonic probe, ultrasonic receiver and described synchronizing signal receiving trap are connected with described touch point coordinate locating device by connector.
7. according to the device described in any one in claim 1,2,3,5 or 6, it is characterized in that, described touch point coordinate locating device, be further used for receiving after described range information, in its data storehouse, whether inquiry has described range information, if there is described range information, extracts the coordinate that described range information is corresponding and be defined as the coordinate of described touch point.
8. according to a touch-control Display Realization method for any one touch control display apparatus in claim 1 to 6, it is characterized in that, the method comprises:
Described ultrasonic probe, ultrasonic receiver, according to the ultrasonic signal of described ultrasonic generator, calculates touch point to the distance of self;
The touch point coordinate locating device of described display panels is the distance to described ultrasonic probe, ultrasonic receiver according to described touch point, determines the coordinate of described touch point.
9. method according to claim 8, is characterized in that, described touch point coordinate locating device is the distance to described ultrasonic probe, ultrasonic receiver according to described touch point, determines the coordinate of described touch point, for:
Receive after the range information that ultrasonic probe, ultrasonic receiver sends, whether inquiry has described range information in its data storehouse, if there is described range information, extracts the coordinate that described range information is corresponding and be defined as the coordinate of described touch point.
10. method according to claim 8 or claim 9, is characterized in that, the method also comprises:
After the synchronizing signal that the described synchronization signal generating apparatus that described synchronizing signal receiving trap is received sends simultaneously, to described touch point coordinate locating device, send synchronizing signal;
The described synchronizing signal that adopts described touch point coordinate locating device realizes definite operation of coordinate of described touch point and synchronizeing of the touch control operation of described pointer.
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| WO2019113906A1 (en) * | 2017-12-14 | 2019-06-20 | 深圳市汇顶科技股份有限公司 | Method and apparatus for determining coordinates of stylus, electronic device and storage medium |
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