CN106155375A - The detection method of monolayer sensing device - Google Patents
The detection method of monolayer sensing device Download PDFInfo
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- CN106155375A CN106155375A CN201510141495.4A CN201510141495A CN106155375A CN 106155375 A CN106155375 A CN 106155375A CN 201510141495 A CN201510141495 A CN 201510141495A CN 106155375 A CN106155375 A CN 106155375A
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Abstract
The present invention provides the detection method of a kind of monolayer sensing (One Layer Sensor, OLS) device, including at least the following step: produced by squarer and have the square-wave signal of working cycle (duty cycle) to the first transducer；First transducer produces the first voltage to switching switch according to square-wave signal, and is inputted the first voltage to transmitting port by switching switch；When the first voltage reaches predeterminated voltage, squarer i.e. stops continuing to transmit square-wave signal；Throughput slowdown monitoring switch sequentially measures the reception port corresponding with transmitting port to obtain multiple coupled voltages (couple voltage)；Squarer produces has the reference square-wave signal in reference work cycle to the second transducer；Second transducer produces the second voltage according to reference to square-wave signal；And utilize comparator to compare coupled voltages and the second voltage, data can be obtained.
Description
Technical field
The present invention is about a kind of detection method sensing device, the inspection of a kind of monolayer sensing device
Survey method.
Background technology
Contact panel is widely used in the display of the most portable notebook computer, portable individual moves
The input function of mobile phone, various information home appliance, public information system equipment, office automation
Arrange.The layout type of known its sensor of contact panel mostly has the framework of bridge formation, in technique
For on, the technique being necessary for having more several roads light shield.In addition to increasing cost in technique, the portion of bridge formation
Divide and be relatively easy to damage because of follow-up processing, cause the decline of yield.Therefore, industry just develops
All sensors (such as transmission electrode and reception electrode) are incorporated into the monolayer sensor of single conductive layer
The layout type of (One Layer Sensor, OLS), in order to overcome aforesaid problem.
But, thickness, the uniformity or the flatness of monolayer sensor layout to be detected, with existing equipment
And for method, need contact (pad) bracing wire respectively by each transmission port and reception port out to measure, its
Process is the most loaded down with trivial details.
Summary of the invention
In view of this, a purpose of the present invention be to provide a kind of monolayer sensing (One Layer Sensor,
OLS) detection method of device, the method includes at least the following step: (a) is produced by a squarer
Raw have a square-wave signal of a working cycle (duty cycle) to one first transducer；(b) this first turn
Parallel operation produces one first voltage according to this square-wave signal and switchs to a switching, and should by this switching switch
First voltage input is to a transmission port；C (), when this first voltage reaches a predeterminated voltage, this square wave produces
Raw device i.e. stops continuing to transmit this square-wave signal；D () is sequentially measured and this transmission port by a measurement switch
Corresponding reception port is to obtain multiple coupled voltages (couple voltage)；E () this squarer produces
There is a reference square-wave signal in a reference work cycle to one second transducer；(f) this second transducer
One second voltage is produced according to this reference square-wave signal；(g) utilize a comparator compare this coupled voltages with
This second voltage, can obtain data.Wherein, the first transducer and the second transducer are a kind of electric charge pump
(charge pump), switching switch and measurement switch produce for a kind of analog switch or digital switch, square wave
There is in device an enumerator.
Another object of the present invention is to provide the detection method of a kind of monolayer sensing device, for a detection
System, this system includes at least: a squarer；One first transducer, is coupled to this square wave and produces
Device；One switching switch, is coupled to this first transducer and the transmission port of monolayer sensing device；One measures
Switch, is coupled to the reception port of this monolayer sensing device；One comparator, is coupled to this measurement switch and is somebody's turn to do
Squarer；And one second transducer, it is coupled to this squarer and this comparator；Wherein should
Method includes at least the following step: produced a square wave letter with a working cycle by this squarer
Number to this first transducer；This first transducer produces one first voltage to this switching according to this square-wave signal
Switch, and by this switching switch by a transmission port of this first voltage input to this transmission port；When this
When one voltage reaches a predeterminated voltage, this squarer i.e. stops continuing to transmit this square-wave signal；Pass through
This measurement switch sequentially measures this reception port corresponding with this transmission port to obtain multiple coupled voltages；The party
Baud generator produces one with a reference work cycle with reference to square-wave signal to this second transducer；This is years old
Two transducers produce one second voltage according to this reference square-wave signal；This comparator is utilized to compare this coupling electricity
Pressure and this second voltage, can obtain data.Wherein, the first transducer and the second transducer are a kind of electric charge
Pump, switching switch and measurement switch are a kind of analog switch or digital switch, have one in squarer
Enumerator.
Accompanying drawing explanation
Figure 1A is embodiment of the present invention schematic diagram.
Figure 1B is the embodiment schematic diagram of monolayer of the present invention sensing device.
Fig. 2 A is the thin portion embodiment schematic diagram of Fig. 1 embodiment.
Fig. 2 B is the coupled voltages schematic diagram of Fig. 2 A embodiment.
Fig. 3 A is the thin portion embodiment schematic diagram of Fig. 1 embodiment.
Fig. 3 B is that the second voltage of Fig. 3 A embodiment compares schematic diagram with coupled voltages.
Fig. 4 is embodiment of the present invention flow chart.
Primary clustering symbol description:
1 detecting system
11 squarers
12 first transducers
13 second transducers
14 switching switches
15 measure switch
16 comparators
2 monolayer sensing devices
21 transmission ports
22 receive port
V1 the first voltage
V2 the second voltage
Vc coupled voltages
TX1_1～TX1_N first transmits port～N transmits port
RX1_1～RX1_N first receives port～N receives port
Detailed description of the invention
Below by schematically coordinating multiple embodiments of the open present invention of word narration, for the most from tomorrow
Seeing, the details in many practices will be explained in the following description.It should be appreciated, however, that these are real
Details in business is not applied to limit the present invention.Additionally, for simplify graphic for the sake of, structure known to some
To draw in the way of simple signal in the drawings with element.
Refer to the embodiment of Figure 1A and Figure 1B, Figure 1A is that the enforcement of detecting system 1 of the present invention illustrates
Being intended to, detecting system 1 is mainly in order to detect monolayer sensing (One Layer Sensor, OLS) device 2 cloth
Thickness, the uniformity or the flatness of office.The monolayer sensing device 2 of the present embodiment senses touch surface with monolayer
As a example by plate, but it is not limited thereto.
Detecting system 1 comprises squarer the 11, first transducer the 12, second transducer 13, switching
Switch 14, measurement switch 15 and comparator 16.Detecting system 1 senses device 2 in order to detect monolayer,
Wherein monolayer sensing device 2, as shown in Figure 1B, has transmission port 21 and receives port 22, transmitting port
21 can comprise the first transmission port TX1_1～N transmits port TX1_N, corresponds respectively to receive port 22
First reception port RX1_1～N receive port RX1_N.It should be noted that, in this embodiment,
Transmission port 21 can represent a certain touch area in whole monolayer sensing device 2 with receiving port 22；?
In other embodiments, monolayer sensing device 2 can also comprise other touch areas, such as
TX2_1～TX2_N corresponds to corresponding to RX2_1～RX2_N, TX3_1～TX3_N
RX3_1～RX3_N ... TXN_1～TXN_N corresponds to RXN_1～RXN_N.
Squarer 11 is in order to produce square-wave signal to the first transducer 12, the side used by the present embodiment
Baud generator 11, it is also possible to be that other can produce the device of square-wave signal, such as microprocessor (Micro
Control Unit, MCU), field programmable gate array (Field Programmable Gate Array,
FPGA) etc..First transducer 12 is coupled to squarer 11, in order to defeated in response to the square wave received
Going out enough voltage and switch switch 14 to drive, in the present embodiment, the first transducer 12 is electric charge pump
(charge pump), but be not limited.Switching switch 14 is coupled to the first transducer 12 and monolayer sense
Survey the transmission port 21 of device 2, sense to monolayer in order to the voltage input that the first transducer 12 is exported
The transmission port 21 of device 2；Wherein switching switch 14 can be analog or digital switch.Measure switch 15
It is coupled to the reception port 22 of monolayer sensing device 2, in order to optionally to measure reception port 22 and transmission port
21 is corresponding and the coupled voltages (couple voltage) that produces, is similar to switch switch 14, measures switch
15 can also be analog or digital switch.Comparator 16 is coupled to measure switch 15 and squarer
11；And the second transducer 13 is coupled to squarer 11 and comparator 16, enough in order to export
Voltage, at this also as a example by electric charge pump (charge pump), but is not limited.Comparator 16 in order to
The voltage that coupled voltages and the second transducer 13 export is compared.
Hereinafter detecting system 1 substantially three part of the present invention is explained.First, refer to Figure 1A,
The step (a) of Figure 1B and Fig. 4～(c): (a) is produced by a squarer has a working cycle (duty
Cycle) a square-wave signal is to one first transducer；B () this first transducer produces according to this square-wave signal
One first voltage is to a switching switch, and is inputted this first voltage to a transmission by this switching switch
Port；C (), when this first voltage reaches a predeterminated voltage, this squarer i.e. stops continuing to transmit being somebody's turn to do
Square-wave signal.
Squarer 11 produces the square-wave signal with particular duty cycle to the first transducer 12, side
The working cycle of ripple signal can be decided in its sole discretion by squarer 11, and the different working cycle can determine
Fixed different voltage output.First transducer 12 internal circuit of utilization own is defeated to squarer 11 institute
The square-wave signal entered is charged producing the first voltage V1, and the first voltage V1 input is opened to switching
Close 14.In this embodiment, the first transducer 12 is a kind of electric charge pump, but does not limit with this.
Switching switch 14 can be analog or digital switch, and can be selected by switching switch 14 will be by the
One voltage V1 input is to which transmission port of the monolayer sensing device 2 coupled, and this sentences selection the
As a example by one transmission port TX1_1, in order to determine the to be detected or region of checking.By the way of switch
Switching, can save the loaded down with trivial details step of additionally bracing wire detection needed for each transmission port contact (pad) in the past
And detection efficiency can be promoted suddenly,.When the first voltage V1 reaches the voltage of systemic presupposition, now
First voltage V1 tends towards stability, and squarer 11 i.e. stops continuing to transmit square-wave signal.
Then, refer to Figure 1A, Fig. 2 A and Fig. 2 B, and refer to the step (d) of Fig. 4: pass through
One measures switch sequentially measures the reception port corresponding with this transmission port to obtain multiple coupled voltages (couple
voltage)。
The transmission port 21 of device 2 is sensed when the first voltage V1 is put on monolayer by switching switch 14 selection
The first transmission port TX1_1, the second transmission port TX1_2 ... or during TX1_N, electric lines of force coupling can be passed through
The effect closed, can measure, receiving port 22, the multiple coupled voltages coupled because of electromagnetic induction
Vc.As shown in Figure 2 A, the first transmission port TX1_1 in transmission port 21 can be with the received in port 22
One reception port RX1_1 coupling, TX1_2 can couple with RX1_2 ... TX1_N can couple with RX1_N.
Owing to transmission port 21 may comprise multiple contact (pad) in receiving port 22, if each contact
Connecing other bracing wire out to measure, system channel quantity can be caused too much, not only process is loaded down with trivial details and increases cost.
Therefore, in the present embodiment, receiving rear end, port 22 also set amount slowdown monitoring switch 15, it is likewise possible to
It is analog or digital switch, arrives corresponding to the TX1_1 of port in order to sequentially to switch and to measure to transmit with first
First receives port RX1_1, TX1_2 and RX1_2 ... TX1_N and RX1_N, to obtain multiple coupling
Voltage Vc.The coupled voltages Vc that this place measures can be relevant to aforementioned square-wave signal, works as square-wave signal
Work start (duty start) and slowly increase, when (duty fix) is fixed in the work of square-wave signal, meeting
Leveling off to a burning voltage, finally, when the work of square-wave signal reduces (duty stop), voltage is therewith
Reduce.
Finally, refer to Figure 1A, Fig. 3 A and Fig. 3 B, and step (e)～(g): (e) that please compare Fig. 4 should
Squarer produces one with a reference work cycle with reference to square-wave signal to one second transducer；(f)
This second transducer produces one second voltage according to this reference square-wave signal；G () utilizes a comparator to compare
This coupled voltages and this second voltage, can obtain data.
Squarer 11 produces has the reference square-wave signal in reference work cycle to the second transducer
13, the reference square wave letter that squarer 11 is inputted by the second transducer 13 internal circuit of utilization own
Number it is charged producing the second voltage V2, and the second voltage V2 is inputted to comparator 16.Second
Transducer 13 is a kind of electric charge pump, but does not limit with this.Now, comparator 16 is by the second voltage
Coupled voltages Vc produced by V2 and aforementioned quantities slowdown monitoring switch 15 compares, and obtains one first biography
Defeated port TX1_1 corresponds to the first reception port RX1～1 ... the data of TX1_N correspondence RX1_N, thus
I.e. complete thickness, the uniformity or the flatness of the present embodiment detection monolayer sensing device 2 layout.It is worth one
Be mentioned that, the squarer 11 of the present embodiment can couple PC, computer or other have meter
The device of calculation ability, in order to carry out follow-up analysis or other operations to aforesaid data.
Here, should be noted that, when the second voltage V2 enters comparator 16 with coupled voltages, in
In the present embodiment, defining when the second voltage V2 is more than coupled voltages Vc, comparator 16 is output as low
State (low)；Otherwise, when the second voltage V2 is less than coupled voltages Vc, comparator 16 is output as high state
(high).Therefore, when coupled voltages Vc starts (duty start) with square-wave signal work and slowly increases,
Now comparator 16 is output as low state (low)；When coupled voltages Vc is with the fixing (duty of square-wave signal work
Fix) and time convergence is stablized, comparator 16 is output as high state (high)；When coupled voltages Vc believes with square wave
Number work reduces (duty stop) and when slowly reducing, comparator 16 is output as low state (low), and will compare
The low state (low) of device 16 is defined as 0, and high state (high) is defined as 1.When comparator 16 is output as 1,
As defined above, representing coupled voltages Vc is stable state, with TX1_1 correspondence RX1_1 is
Example, i.e. represents that this passage is uniform or smooth.
The result of gained is inputted to the built-in enumerator (not shown) of squarer 11 by comparator 16,
Enumerator starts to calculate comparator 16 and is output as the result of 1 and coordinates aforementioned TX1_1 correspondence RX1_1 ...
TX1_N correspondence RX1_N, i.e. can get aforementioned data.
Refer to the embodiment of Fig. 4.Fig. 4 is embodiment of the present invention flow chart, mainly provides a kind of single
The detection method of layer sensing device.Should be noted that, device mentioned in method and change, replacement
Embodiment illustrate in previous embodiment, therefore do not repeat at this.
This detection method includes at least the following step: (a) is produced by a squarer has a job
One square-wave signal in cycle (duty cycle) is to one first transducer；B () this first transducer is according to the party
Ripple signal produces one first voltage and switchs to a switching, and is inputted by this first voltage by this switching switch
To a transmission port；C (), when this first voltage reaches a predeterminated voltage, this squarer i.e. stops continuing
Resume and give this square-wave signal；D () sequentially measures the reception port corresponding with this transmission port by a measurement switch
To obtain multiple coupled voltages (couple voltage)；E () this squarer produces has one with reference to work
Make a reference square-wave signal in cycle to one second transducer；F () this second transducer is according to this reference side
Ripple signal produces one second voltage；G () utilizes a comparator to compare this coupled voltages and this second voltage,
Data can be obtained.
It should be noted that, above-described embodiment is to pass with the first transmission port TX1_1～N at specific transmission port
Defeated port TX1_N its corresponding first reception port RX1_1～N receiving port that arranges in pairs or groups receives port RX1_N and is
Example.But, in other embodiments, it is also possible to utilize the method for the present invention to detect other transmission ports and connect
Receiving port, the first reception port～the N at such as TX2_1～TX2_N collocation correspondence reception port receive port
RX2_1～RX2_N ... be RXN_1～RXN_N until TXN_1～TXN_N arranges in pairs or groups.Thus framework is also
Coordinate switching switch 14 and measure the switching of switch 15, can complete whole in the way of reaching subregion, timesharing
The face monolayer sensing thickness of device layout, the uniformity or the judgement of flatness.
Compared to known technology, the detection method of monolayer of the present invention sensing device utilizes simple component
I.e. can determine that the monolayer sensing thickness of device, the uniformity or flatness, testing process can be simplified to improve
Efficiency during detection.
The foregoing is only presently preferred embodiments of the present invention, all according to scope of the present invention patent done equal
Deng change and modification, the covering scope of the present invention all should be belonged to.
Claims (10)
1. a detection method for monolayer sensing device, for a detecting system, it is characterised in that
This system includes at least:
One squarer；
One first transducer, is coupled to this squarer；
One switching switch, is coupled to a transmission port of this first transducer and monolayer sensing device；
One measures switch, is coupled to a reception port of this monolayer sensing device；
One comparator, is coupled to this measurement switch and this squarer；And
One second transducer, is coupled to this squarer and this comparator；
The method includes at least the following step: is produced by this squarer and has a working cycle
A square-wave signal to this first transducer；This first transducer produces one the according to this square-wave signal
One voltage switchs to this switching, and is inputted this first voltage to this transmission port by this switching switch；
When this first voltage reaches a predeterminated voltage, this squarer i.e. stops continuing to transmit this square wave
Signal；This reception port corresponding with this transmission port is sequentially measured multiple to obtain by this measurement switch
Coupled voltages；This squarer produces one with a reference work cycle with reference to square-wave signal extremely
This second transducer；This second transducer produces one second voltage according to this reference square-wave signal；Profit
Compare this coupled voltages and this second voltage with this comparator, data can be obtained.
2. the detection method of monolayer sensing device as claimed in claim 1, it is characterised in that should
First transducer and this second transducer are a kind of electric charge pump.
3. the detection method of monolayer sensing device as claimed in claim 1, it is characterised in that should
Switching switch is an analog switch or digital switch.
4. the detection method of monolayer sensing device as claimed in claim 1, it is characterised in that should
Measuring switch is an analog switch or digital switch.
5. the detection method of monolayer sensing device as claimed in claim 1, it is characterised in that should
There is in squarer an enumerator.
6. the detection method of a monolayer sensing device, it is characterised in that the method includes at least down
Row step:
A () is produced by a squarer has a square-wave signal of a working cycle to one first
Transducer；
B () this first transducer produces one first voltage according to this square-wave signal and switchs to a switching,
And by this switching switch, the input of this first voltage is transmitted port to one；
C (), when this first voltage reaches a predeterminated voltage, this squarer i.e. stops continuing to pass
Give this square-wave signal；
D () sequentially measures the reception port corresponding with this transmission port by a measurement switch multiple to obtain
Coupled voltages；
E () this squarer produces one with a reference work cycle with reference to square-wave signal to one
Second transducer；
F () this second transducer produces one second voltage according to this reference square-wave signal；And
G () utilizes a comparator to compare this coupled voltages and this second voltage, can obtain data.
7. the detection method of monolayer sensing device as claimed in claim 6, it is characterised in that should
First transducer and this second transducer are a kind of electric charge pump.
8. the detection method of monolayer sensing device as claimed in claim 6, it is characterised in that should
Switching switch is an analog switch or digital switch.
9. the detection method of monolayer sensing device as claimed in claim 6, it is characterised in that should
Measuring switch is an analog switch or digital switch.
10. the detection method of monolayer sensing device as claimed in claim 6, it is characterised in that should
There is in squarer an enumerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141495.4A CN106155375A (en) | 2015-03-24 | 2015-03-24 | The detection method of monolayer sensing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510141495.4A CN106155375A (en) | 2015-03-24 | 2015-03-24 | The detection method of monolayer sensing device |
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| CN106155375A true CN106155375A (en) | 2016-11-23 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576953A (en) * | 2012-07-25 | 2014-02-12 | 禾瑞亚科技股份有限公司 | drive signal generation system |
| CN103593096A (en) * | 2012-08-16 | 2014-02-19 | 瀚宇彩晶股份有限公司 | capacitive touch system |
| US20150062074A1 (en) * | 2013-09-03 | 2015-03-05 | Nuvoton Technology Corporation | Sensing device |
-
2015
- 2015-03-24 CN CN201510141495.4A patent/CN106155375A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103576953A (en) * | 2012-07-25 | 2014-02-12 | 禾瑞亚科技股份有限公司 | drive signal generation system |
| CN103593096A (en) * | 2012-08-16 | 2014-02-19 | 瀚宇彩晶股份有限公司 | capacitive touch system |
| US20150062074A1 (en) * | 2013-09-03 | 2015-03-05 | Nuvoton Technology Corporation | Sensing device |
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Application publication date: 20161123 |