CN106155417B - A kind of touch control detection device, method and display - Google Patents
A kind of touch control detection device, method and display Download PDFInfo
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- CN106155417B CN106155417B CN201610563407.4A CN201610563407A CN106155417B CN 106155417 B CN106155417 B CN 106155417B CN 201610563407 A CN201610563407 A CN 201610563407A CN 106155417 B CN106155417 B CN 106155417B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
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- General Engineering & Computer Science (AREA)
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- User Interface Of Digital Computer (AREA)
Abstract
The present invention provides a kind of touch control detection device, method and display, the touch control detection device, for the display side of display screen to be arranged in, the touch control detection device includes: touch control object detection module, for being detected to the touch control object when touch control object touches the display screen；Calculation of pressure module, for calculating the touch control object according to testing result to the press pressure of the display screen.The touch-control object detecting method, including such as: when touch control object touches the display screen, the touch control object is detected；The touch control object is calculated according to testing result to the press pressure of the display screen.The display, including touch control detection device provided by any one embodiment of the present invention.Pressing dynamics detect when the present invention can realize touch-control by different modes.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of touch control detection devices, method and display.
Background technique
Force touch is the touch sensing technology developed by Apple Inc..By Force Touch, equipment can
To perceive the dynamics of light pressure and weight, and recall different corresponding functions.Apple Inc. also illustrates that Force Touch is research and development
Since multi-point touch, most important completely new inducing function.The technology of there is now is to change the method detection of capacitance by pressing screen
The pressing dynamics of finger realize Force Touch technology.
Summary of the invention
In view of this, the present invention provides a kind of touch control detection device, method and display, it is real different modes can be passed through
Pressing dynamics detect when existing touch-control.
Based on above-mentioned purpose touch control detection device provided by the invention, for the display side of display screen, the touching to be arranged in
Controlling detection device includes:
Touch control object detection module, for being detected to the touch control object when touch control object touches the display screen；
Calculation of pressure module, for calculating the touch control object according to testing result to the press pressure of the display screen.
Optionally, the touch control object detection module includes:
For ultrasound unit on the display screen to be arranged, for after receiving triggering command, transmitting with it is described
Display screen surface is parallel and can cover the ultrasonic wave of the display screen surface；
Detection unit, for square transmission time to detect the touch control object on the display screen according to the ultrasonic wave
Object parameters；
The calculation of pressure module is specifically used for calculating the touch control object to described according to the object parameters of the touch control object
The press pressure of display screen.
Optionally, the ultrasound unit includes:
For the ultrasonic transmitter of first side of display screen to be arranged in；
For the ultrasonic receiver of display screen second side opposite with first side to be arranged in.
Optionally, the object parameters of the touch control object includes the density of the touch control object；The detection unit includes:
Density computation subunit: for obtaining launch time of ultrasonic transmitter transmitting ultrasonic wave and described
Ultrasonic receiver receives the receiving time of ultrasonic wave, calculates the touching according to the receiving time and the difference of the launch time
Control the density of object.
Optionally, the object parameters of the touch control object includes the contact area of the touch control object and display screen；The detection
Unit includes:
Contact area computation subunit: emitting the launch time of ultrasonic wave for obtaining the ultrasonic transmitter, and
The ultrasonic receiver receives the receiving time of ultrasonic wave, calculates institute according to the receiving time and the difference of the launch time
State the contact area of touch control object Yu the display screen.
Optionally, the touch control object is finger.
Optionally, the display module further include:
Pressure detecting trigger module: for when the touch control object meets preset condition with the contact of the display screen, to
The ultrasound unit sends the triggering command.
Optionally, the preset condition are as follows:
The continuous contact time of the touch control object and the display screen is greater than threshold value.
Optionally, the threshold value is 1s.
Meanwhile the present invention provides a kind of touch control detecting method, is applied to as provided by any one embodiment of the present invention
Touch control detection device includes the following steps:
When touch control object touches the display screen, the touch control object is detected；
The touch control object is calculated according to testing result to the press pressure of the display screen.
Optionally, described specifically to be wrapped when touch control object touches the display screen, the step of detection to the touch control object
It includes:
After receiving triggering command, control ultrasonic transmitter transmitting is parallel with the display screen surface and can cover
Cover the ultrasonic wave of the display screen surface；
According to the ultrasonic wave, square transmission time detects the object parameters of the touch control object on the display screen；
The step of press pressure that the touch control object is calculated according to testing result to the display screen, specifically includes:
The touch control object is calculated to the press pressure of the display screen according to the object parameters of the touch control object.
Optionally, the object parameters of the touch control object includes the density of the touch control object；It is described to be existed according to the ultrasonic wave
Transmission time above the display screen detects the step of object parameters of the touch control object and specifically includes:
Obtain the launch time of the ultrasonic wave and the receiving time of the ultrasonic wave, according to the receiving time and
The difference of the launch time calculates the density of the touch control object.
Optionally, the object parameters of the touch control object includes the contact area variation of the touch control object and the display screen
Amount；It is described according to the ultrasonic wave square transmission time detects the object parameters of the touch control object on the display screen the step of
It specifically includes:
Obtain the launch time of the ultrasonic wave and the receiving time of the ultrasonic wave, according to the receiving time and
The difference of the launch time calculates the contact area of the touch control object Yu the display screen；Detect respectively the touch control object with it is described
The contact area at the first moment of display screen and contact area at the second moment；
The touch control object and the display screen are calculated according to the area at first moment and the contact area at the second moment
Contact area variable quantity.
Optionally, described specifically to be wrapped when touch control object touches the display screen, the step of detection to the touch control object
It includes:
When the touch control object meets preset condition with the contact of the display screen, the triggering command is sent.
Optionally, the preset condition are as follows:
The continuous contact time of the touch control object and the display screen is greater than threshold value.
Further, the present invention provides a kind of display, including for showing the display screen of picture and as the present invention is any one
Touch control detection device provided by item embodiment.
From the above it can be seen that touch control detection device provided by the invention, method and display, by detecting touch-control
Object calculates touch control object to the touch-control pressure of display screen, changes calculating using detection display screen capacitance in the prior art is different from
The mode of pressing dynamics realizes Force Touch, and detection accuracy with higher.
Detailed description of the invention
Fig. 1 is touch control detection device structural schematic diagram provided by the embodiment of the present invention；
Fig. 2 is touch-control object detecting method flow diagram provided by the embodiment of the present invention；
Fig. 3 is touch control object detection device schematic diagram provided by the embodiment of the present invention.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
Present invention firstly provides a kind of touch control detection devices, for the display side of display screen, the touch control detection to be arranged in
Device is as shown in Figure 1, comprising:
Touch control object detection module 101, for being detected to the touch control object when touch control object touches the display screen；
Calculation of pressure module 102, for calculating the touch control object according to testing result to the press pressure of the display screen.
From the above it can be seen that touch control detection device provided by the invention, can pass through the detection meter to touch control object
Touch control object is calculated to the press pressure of display screen, since in pressing, touch control object can be with the difference of press pressure and form is joined
Number is different；For example, the object parameters such as density, contact area, volume can change when pressure change, joined according to these forms
Number can calculate press pressure, have certain accuracy, but also realizing that the method for Force Touch is no longer single.
In the specific embodiment of the invention, the touch control object can for dedicated for applying stressed object to display screen,
Such as stylus, touching control, user's finger.
It is described that touch control object is detected, it can be the arbitrary objects parameter to touch control object, that is, about touch control object
Arbitrary parameter, such as density, the contact area of touch control object and display screen, volume, conductivity etc. can generate change when receiving pressure
Parameter change, about touch control object itself.
In a particular embodiment, the touch control object detection module can pass through infrared detection, ultrasound detection, ray detection etc.
Mode detects touch control object, obtains the object parameters of touch control object.
In some embodiment of the invention, the touch control object detection module includes:
For ultrasound unit on the display screen to be arranged, for after receiving triggering command, transmitting with it is described
Display screen surface is parallel and can cover the ultrasonic wave of the display screen surface；
Detection unit, for square transmission time to detect the touch control object on the display screen according to the ultrasonic wave
Object parameters；
The calculation of pressure module is specifically used for calculating the touch control object to described according to the object parameters of the touch control object
The press pressure of display screen.
In the specific embodiment of the invention, the object parameters of the touch control object includes indirect parameter, for example, ultrasonic wave is touching
The time etc. transmitted in control object.
In a kind of specific embodiment of the present invention, as shown in figure 3, the display screen is LCD liquid crystal display 301, respectively in LCD
Ultrasonic transmitter 304 and ultrasonic receiver 305 built in opposite the first side 302 and second side 303 of liquid crystal display 301 surpass
The propagation path of sound wave is substantially parallel with LCD liquid crystal display 301, and propagates in the propagation face close to LCD liquid crystal display 301, works as finger
When 306 touch LCD liquid crystal displays 301 and firmly pressing, the density inside finger 306 will change, and strength is bigger, finger
306 deformations are bigger, and then the density of finger 306 is bigger, while the contact area of finger 306 and LCD liquid crystal display 301 is also got over
Greatly, ultrasonic wave spread speed difference in the substance of different densities is received by comparing ultrasonic wave when preset normal pressing
Time and the ultrasonic wave receiving time detected, can judge finger pressing dynamics.
In the specific embodiment of the invention, the object parameters can be density, area, volume, conductivity etc..When described
When touch control object is user's finger, the object parameters can also be biological characteristic of finger, such as fingerprint deformation quantity etc..
In some embodiment of the invention, the ultrasound unit includes:
For the ultrasonic transmitter of first side of display screen to be arranged in；
For the ultrasonic receiver of display screen second side opposite with first side to be arranged in.
In the specific embodiment of the invention, first side, second side can be two long sides of oblong display screen.
Or first side, two short sides that second side is oblong display screen.
In some embodiment of the invention, the object parameters of the touch control object includes the density of the touch control object；The inspection
Surveying unit includes:
Density computation subunit: for obtaining launch time of ultrasonic transmitter transmitting ultrasonic wave and described
Ultrasonic receiver receives the receiving time of ultrasonic wave, calculates the touching according to the receiving time and the difference of the launch time
Control the density of object.
When the touch control object be specific, prefabricated touch control object (such as stylus) when, touch control object in different pressing dynamics
Lower density it is different and with pressing dynamics there are corresponding relationship, the corresponding relationship of pre-recorded touch control object density and pressing dynamics, just
Touch control object density can be detected in touch control object touching display screen, and pressing force is calculated according to the corresponding relationship of density and pressing dynamics
Degree.
When the touch control object be user's finger when, the density of human skin is substantially the same, and the human body density of finger with
Also there is specific corresponding relationship in pressing dynamics, the corresponding relationship of pre-recorded human finger density and pressing dynamics substantially, just
Finger density can be detected in finger touch display screen, and pressing dynamics are calculated according to the corresponding relationship of density and pressing dynamics.
In view of different human finger density may have a certain difference, in one embodiment, can pass through
A different moments during touch-control detect finger density, variation of finger density during touch-control are obtained, according to hand
Refer to the dynamics pressed when variable density calculates finger touch.
In some embodiment of the invention, the detection unit includes:
Contact area computation subunit: emitting the launch time of ultrasonic wave for obtaining the ultrasonic transmitter, and
The ultrasonic receiver receives the receiving time of ultrasonic wave, calculates institute according to the receiving time and the difference of the launch time
State the contact area of touch control object Yu the display screen.
In the specific embodiment of the invention, when the touch control object is finger, since different user's fingers is of different sizes,
The contact area variable quantity for contacting display screen according to finger is needed to calculate pressing dynamics, contact area variable quantity is bigger,
Pressing dynamics are bigger；In this case, the detection unit includes:
Contact area computation subunit: emitting the launch time of ultrasonic wave for obtaining the ultrasonic transmitter, and
The ultrasonic receiver receives the receiving time of ultrasonic wave, calculates institute according to the receiving time and the difference of the launch time
State the contact area of touch control object Yu the display screen；The contact surface of the touch control object Yu first moment of display screen is detected respectively
Contact area long-pending and at the second moment；
Area change amount computing module: for being calculated according to the area and the contact area at the second moment at first moment
The contact area variable quantity of the touch control object and the display screen.
When the touch control object is prefabricated object (such as stylus), touched since the consistent touch control object of size can be used
Control, all touch control objects at a particular pressure substantially can be the same with display screen contact area, therefore, can directly establish contact surface
Relationship between long-pending and pressure, detects contact area in touch-control, further calculates pressure size when touch-control.
In a kind of specific embodiment of the present invention, finger is judged by detecting the variation of density and contact area of finger
Degree firmly, this makes it possible to more accurately realize pressure detecting.
In some embodiment of the invention, the touch control object is finger.Exist in production since touch control object is prepared separately
Inconvenience when inconvenient, increased costs and use, therefore, the touch control object are finger, can be user-friendly, simplify system
Make process.
In some embodiment of the invention, the display module further include:
Pressure detecting trigger module: for when the touch control object meets preset condition with the contact of the display screen, to
The ultrasound unit sends the triggering command, triggers the ultrasound unit.
In the specific embodiment of the invention, the preset condition can be the instruction for receiving pressure detecting.
In some embodiment of the invention, the preset condition are as follows:
The continuous contact time of the touch control object and the display screen is greater than threshold value.
In some embodiment of the invention, the threshold value is 1s.
When general user uses the display screen with touch function, finger or prefabricated touch control object residence time on the screen
1s is not exceeded, so in order to save power consumption, when no finger touches screen or when the finger contact screen time is less than 1s,
Ultrasound unit not will start.
In a kind of specific embodiment of the present invention, when the time of finger contact display screen being greater than 1s, pressure detecting triggering
Module receives information, issues triggering command to ultrasound unit, starts the area for detecting finger density and finger contact screen.
When in the path between ultrasonic transmitter and ultrasonic receiver without any object, the propagation time t of ultrasonic wave is certain
'sWhen there is object to block, ultrasonic wave is that speed can change by different medium propagation.Since human body is equivalent to
Liquid, so the spread speed of ultrasonic waveE is the bulk modulus of liquid medium, and ρ is liquid medium density, from
In formula as can be seen that when density p is bigger, the spread speed of ultrasonic wave is smaller, thus the time propagatedMore
It is long.When finger force presses screen, strength is bigger, and the density of finger interior is bigger, and the propagation time of ultrasonic wave is just
It is longer；At the same time, when finger force presses screen, the contact area of finger and screen can also increase therewith, and ultrasonic wave exists
The time that finger interior is propagated increases, to increase the overall propagation time；In this way, in conjunction with density and contact area two because
The pressing dynamics of element, finger are bigger, and ultrasonic propagation time can obviously increase, pressing dynamics, and ultrasonic wave is transmitted in finger tip
Time incrementss can be more, the strength of finger pressing screen can be thus judged, to realize Force touch function.
Meanwhile the present invention provides a kind of touch control detecting method, as shown in Fig. 2, including the following steps:
Step 201: when touch control object touches the display screen, the touch control object being detected；
Step 202: calculating the touch control object according to testing result to the press pressure of the display screen.
In some embodiment of the invention, it is described touch control object touch the display screen when, the touch control object is examined
The step of survey, specifically includes:
After receiving triggering command, control ultrasonic transmitter transmitting is parallel with the display screen surface and can cover
Cover the ultrasonic wave of the display screen surface；
According to the ultrasonic wave, square transmission time detects the object parameters of the touch control object on the display screen；
The step of press pressure that the touch control object is calculated according to testing result to the display screen, specifically includes:
The touch control object is calculated to the press pressure of the display screen according to the object parameters of the touch control object.
In some embodiment of the invention, the object parameters of the touch control object includes the density of the touch control object；Described
The step of square transmission time detects the object parameters of the touch control object on the display screen according to the ultrasonic wave specifically includes:
Obtain the launch time of the ultrasonic wave and the receiving time of the ultrasonic wave, according to the receiving time and
The difference of the launch time calculates the density of the touch control object.
In some embodiment of the invention, the object parameters of the touch control object includes the touch control object and the display screen
Contact area variable quantity；It is described that according to the ultrasonic wave, square transmission time detects the object of the touch control object on the display screen
The step of body parameter, specifically includes:
Obtain the launch time of the ultrasonic wave and the receiving time of the ultrasonic wave, according to the receiving time and
The difference of the launch time calculates the contact area of the touch control object Yu the display screen；Detect respectively the touch control object with it is described
The contact area at the first moment of display screen and contact area at the second moment；
The touch control object and the display screen are calculated according to the area at first moment and the contact area at the second moment
Contact area variable quantity.
In some embodiment of the invention, it is described touch control object touch the display screen when, the touch control object is examined
The step of survey, specifically includes:
When the touch control object meets preset condition with the contact of the display screen, the triggering command is sent.
In some embodiment of the invention, the preset condition are as follows:
The continuous contact time of the touch control object and the display screen is greater than threshold value.
Further, the present invention provides a kind of display, including for show picture display screen and any one of the present invention
Touch control detection device provided by embodiment.
From the above it can be seen that touch control detection device provided by the invention, method and display, by detecting touch-control
Object calculates touch control object to the touch-control pressure of display screen, changes calculating using detection display screen capacitance in the prior art is different from
The mode of pressing dynamics realizes Force Touch, and detection accuracy with higher.
It should be appreciated that multiple embodiments described in this specification are merely to illustrate and explain the present invention, it is not used to limit
The fixed present invention.And in the absence of conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.If in this way, these modifications and changes of the present invention belong to the embodiment of the present invention and its equivalent technologies range it
Interior, then the present invention is also intended to include these modifications and variations.
Claims (14)
1. a kind of touch control detection device, which is characterized in that for the display side of display screen, the touch control detection device packet to be arranged in
It includes:
Touch control object detection module, for being detected to the touch control object when touch control object touches the display screen；
Calculation of pressure module, for calculating the touch control object according to testing result to the press pressure of the display screen；
The touch control object detection module includes:
For ultrasound unit on the display screen to be arranged, for emitting and the display after receiving triggering command
Screen surfaces are parallel and can cover the ultrasonic wave of the display screen surface；
Detection unit, for square transmission time to detect the object of the touch control object on the display screen according to the ultrasonic wave
Parameter；
The calculation of pressure module is specifically used for calculating the touch control object to the display according to the object parameters of the touch control object
The press pressure of screen.
2. touch control detection device according to claim 1, which is characterized in that the ultrasound unit includes:
For the ultrasonic transmitter of first side of display screen to be arranged in；
For the ultrasonic receiver of display screen second side opposite with first side to be arranged in.
3. touch control detection device according to claim 2, which is characterized in that the object parameters of the touch control object includes described
The density of touch control object；The detection unit includes:
Density computation subunit: for obtain ultrasonic transmitter transmitting ultrasonic wave launch time and the ultrasound
Wave receiver receives the receiving time of ultrasonic wave, calculates the touch control object according to the receiving time and the difference of the launch time
Density.
4. touch control detection device according to claim 2, which is characterized in that the object parameters of the touch control object includes described
The contact area of touch control object and display screen；The detection unit includes:
Contact area computation subunit: for obtaining launch time of ultrasonic transmitter transmitting ultrasonic wave and described
Ultrasonic receiver receives the receiving time of ultrasonic wave, calculates the touching according to the receiving time and the difference of the launch time
Control the contact area of object and the display screen.
5. touch control detection device described in any one of -4 according to claim 1, which is characterized in that the touch control object is hand
Refer to.
6. touch control detection device according to claim 1, which is characterized in that the display module further include:
Pressure detecting trigger module: for when the touch control object meets preset condition with the contact of the display screen, Xiang Suoshu
Ultrasound unit sends the triggering command.
7. touch control detection device according to claim 6, which is characterized in that the preset condition are as follows:
The continuous contact time of the touch control object and the display screen is greater than threshold value.
8. touch control detection device according to claim 7, which is characterized in that the threshold value is 1s.
9. a kind of touch control detecting method is applied to such as touch control detection device of any of claims 1-8, feature and exists
In including the following steps:
When touch control object touches the display screen, the touch control object is detected；
The touch control object is calculated according to testing result to the press pressure of the display screen；
It is described to be specifically included when touch control object touches the display screen, the step of detection to the touch control object:
After receiving triggering command, control ultrasonic transmitter transmitting is parallel with the display screen surface and can cover institute
State the ultrasonic wave of display screen surface；
According to the ultrasonic wave, square transmission time detects the object parameters of the touch control object on the display screen；
The step of press pressure that the touch control object is calculated according to testing result to the display screen, specifically includes:
The touch control object is calculated to the press pressure of the display screen according to the object parameters of the touch control object.
10. according to the method described in claim 9, it is characterized in that, the object parameters of the touch control object includes the touch control object
Density；It is described that according to the ultrasonic wave, square transmission time detects the object parameters of the touch control object on the display screen
Step specifically includes:
The launch time of the ultrasonic wave and the receiving time of the ultrasonic wave are obtained, according to the receiving time and described
The difference of launch time calculates the density of the touch control object.
11. according to the method described in claim 9, it is characterized in that, the object parameters of the touch control object includes the touch control object
With the contact area variable quantity of the display screen；It is described that according to the ultrasonic wave, square transmission time is detected on the display screen
The step of object parameters of the touch control object, specifically includes:
The launch time of the ultrasonic wave and the receiving time of the ultrasonic wave are obtained, according to the receiving time and described
The difference of launch time calculates the contact area of the touch control object Yu the display screen；The touch control object and the display are detected respectively
Shield the contact area at the first moment and the contact area at the second moment；
Connecing for the touch control object and the display screen is calculated according to the area at first moment and the contact area at the second moment
Contacting surface accumulates variable quantity.
12. according to the described in any item methods of claim 9-11, which is characterized in that described to touch the display screen in touch control object
When, the step of detecting to the touch control object specifically includes:
When the touch control object meets preset condition with the contact of the display screen, the triggering command is sent.
13. according to the method for claim 12, which is characterized in that the preset condition are as follows:
The continuous contact time of the touch control object and the display screen is greater than threshold value.
14. a kind of display, including for showing the display screen of picture and as touch-control of any of claims 1-8 is examined
Survey device.
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| TWI828559B (en) * | 2023-03-17 | 2024-01-01 | 達運精密工業股份有限公司 | Touch control system and touch control method |
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| CN105683883A (en) * | 2013-11-04 | 2016-06-15 | 高通股份有限公司 | Piezoelectric force sensing array |
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