CN105912174A - Touch sensing device, embedded touch screen and parallel sensing circuit - Google Patents
Touch sensing device, embedded touch screen and parallel sensing circuit Download PDFInfo
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- CN105912174A CN105912174A CN201510385841.3A CN201510385841A CN105912174A CN 105912174 A CN105912174 A CN 105912174A CN 201510385841 A CN201510385841 A CN 201510385841A CN 105912174 A CN105912174 A CN 105912174A
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- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a parallel sensing circuit suitable for a touch panel, which comprises a plurality of sum circuits, wherein each sum circuit is provided with a plurality of input ends and is used for receiving a plurality of sensing signals provided by corresponding receiving ends of the touch panel; and a plurality of receiving circuits respectively coupled to the output ends of the plurality of sum circuits for processing the sum signals, thereby respectively generating sum values to determine touch positions. In another embodiment, the plurality of inputs of each sum circuit performs an addition or a negation of the plurality of sense signals, thereby generating a sum signal at the corresponding output of the sum circuit. The invention is suitable for the parallel sensing circuit of the touch panel or the embedded touch screen, can save the circuit area and the cost, and can not generate delay.
Description
Technical field
The invention relates to touch-control sensing, be applicable to contact panel with embedded especially with regard to one
Parallel type (concurrent) sensing circuit of Touch Screen.
Background technology
Touch sensing device can combine display to form touch control display, its combine touch technology with
Display Technique so that user directly can carry out interaction with shown object.Capacitance type touch control sensing is
The one of which of numerous different touch-control sensing technology.
Capacitive touch sensing device comprises electric conductor (such as tin indium oxide) and insulator (such as glass
Glass).When the surface of human body (it is as another electric conductor) touch capacitor type touch sensing device, meeting
Changing the electrostatic field formed, its reaction, in the change of capacitance, can determine touch position according to this.
Mutual capacitance (mutual-capacitance) touch sensing device is the one of capacitive touch sensing device
Kind.Figure 1A shows the schematic diagram of mutual capacitance touch sensing device 100, and it is by row electrode and row electrode institute
Composition, such as the 3x5 array illustrated in Figure 1A.Signal is driven to impose on transmission end TX1～TX3, and
Sensing signal is collected in receiving terminal RX1～RX5.
Self-capacitance (self-capacitance) touch sensing device is another kind of capacitive touch sensing device.
Figure 1B shows the schematic diagram of self-capacitance touch sensing device 102, and it is made up of with row electrode row electrode,
Such as 3x5 array illustrated in Figure 1B.Being different from mutual capacitance touch sensing device 100, self-capacitance touches
Control sensing device 102 only has receiving terminal RX11～RX15 and RX21～RX23, uses collection sensing
Signal.
Either mutual capacitance touch sensing device 100 or self-capacitance touch sensing device 102, each
Receiving terminal (RX) couples one accordingly and receives circuit (or receiving unit) 11, and such as simulation numeral turns
Parallel operation (ADC).Framework as shown in figure 1 a or figure 1b, receives the number of circuit 11 equal to receiving terminal
Number.Therefore, these frameworks need big circuit area and cost, especially for large touch
Sensing device.The small size touch sensing device that space or power supply are restricted, Figure 1A or figure
Framework shown in 1B has disappearance equally.
In order to improve aforementioned disappearance, Fig. 2 A and Fig. 2 B proposes a kind of improved framework, and its touch-control sensing fills
Put 200 number numbers less than receiving terminal (RX) receiving circuit 11 used.First, such as figure
First stage shown in 2A, receive circuit 11 and receive (and process) corresponding to part receiving terminal (example
Such as RX1～RX3) sensing signal.Then, second stage as shown in Figure 2 B, identical reception
Circuit 11 receives (and process) sensing signal corresponding to remaining receiving terminal (such as RX4～RX6).
Owing to the reception circuit 11 of Fig. 2 A Yu Fig. 2 B uses timesharing (time-sharing) mode, therefore its
Framework, when processing all sensing signals, can cause time delay.This disappearance is for embedded (in-cell)
Touch control display can be even more serious, because its display sequentially performs with touch-control sensing, and therefore touch-control
The more general touch sensing device effective time (such as shown in Figure 1A or Figure 1B) of sensing comes short.
In view of conventional touch sense device has the shortcoming of big circuit area or long delay, therefore need badly and carry
Go out touch sensing device or the embedded touch screen of a kind of novelty, in order to reduce circuit area and will not
Produce long delay.
Summary of the invention
It is an object of the invention to propose a kind of be applicable to the parallel of contact panel or embedded touch screen
Formula sensing circuit, in order to save circuit area and cost, will not produce again delay.
It is an object of the invention to realize by the following technical solutions.The present invention provides a kind of touch-control sense
Survey device, comprise: contact panel, comprise row electrode and row electrode；Multiple and circuit, each and
Circuit has multiple inputs, in order to receive multiple sensings that the correspondingly received end of this contact panel is provided
Signal, the plurality of input of each and circuit adds up or deducts the plurality of sensing signal, because of
And produce and signal is in the corresponding output end of this and circuit；And multiple reception circuit, it is respectively coupled to institute
State multiple and circuit output, in order to process this and signal, thus produce respectively and be worth, determining according to this
Determine touch position.
The purpose of the present invention also can be applied to the following technical measures to achieve further.
It is also preferred that the left aforesaid touch sensing device, wherein each receiving terminal of this contact panel is corresponding
One and only one and circuit.
It is also preferred that the left aforesaid touch sensing device, each of which receives circuit and comprises simulation numeral turn
Parallel operation.
It is also preferred that the left aforesaid touch sensing device, wherein said multiple and circuit number is equal to described
The number of multiple reception circuit.
It is also preferred that the left aforesaid touch sensing device, wherein in continuous multiple periods, should be many with circuit
Individual input to add computing different with the combination subtracting computing.
It is also preferred that the left aforesaid touch sensing device, wherein n continuous multiple periods, it is somebody's turn to do and circuit
N input to add computing different with the combination subtracting computing, wherein n is the positive integer more than two.
It is also preferred that the left aforesaid touch sensing device, each of which should comprise with circuit: the first switch,
Corresponding to each input, when performing to add computing, this first switch Guan Bi presets positive electricity to receive
Pressure；Second switch, corresponding to each input, when performing to subtract computing, this second switch closes
With ground connection；Amplifier, is coupled to connecing accordingly of this first switch, this second switch and this contact panel
Receiving end；And capacitor, it is coupled between the output of this amplifier and input, when performing to add computing
Time this capacitor is charged, when performing to subtract computing to this capacitor discharge.
The purpose of the present invention realizes the most by the following technical solutions.The present invention provides a kind of parallel type
Sensing circuit, comprises: multiple and circuit, and each and circuit have multiple inputs, tactile in order to receive
Multiple sensing signals that the correspondingly received end of control panel is provided, each is the plurality of defeated with circuit
Enter end add up or deduct the plurality of sensing signal, thus produce and the most defeated in this and circuit of signal
Go out end；And multiple reception circuit, it is respectively coupled to the plurality of and circuit output, in order to process
It is somebody's turn to do and signal, thus produces respectively and be worth, determine touch position according to this.
The purpose of the present invention also can be applied to the following technical measures to achieve further.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein each receiving terminal phase of this contact panel
Answer one and only one and circuit.
It is also preferred that the left aforesaid parallel type sensing circuit, each of which receives circuit and comprises simulation numeral
Converter.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein said multiple and circuit number is equal to institute
State the number of multiple reception circuit.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein in continuous multiple periods, should be with circuit
Multiple inputs to add computing different with the combination subtracting computing.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein n continuous multiple periods, it is somebody's turn to do and electricity
N the input on road to add computing different with the combination subtracting computing, wherein n is the positive integer more than two.
It is also preferred that the left aforesaid parallel type sensing circuit, each of which should comprise with circuit: first opens
Closing, corresponding to each input, when performing to add computing, this first switch Guan Bi is preset to receive
Positive voltage；Second switch, corresponding to each input, when performing to subtract computing, this second switch
Guan Bi is with ground connection；Amplifier, is coupled to this first switch, this second switch and the phase of this contact panel
Answer receiving terminal；And capacitor, it is coupled between the output of this amplifier and input, when performing to add
During computing, this capacitor is charged, when performing to subtract computing to this capacitor discharge.
The purpose of the present invention realizes the most by the following technical solutions.The present invention provides a kind of embedded
Touch Screen, comprises: display floater, and its common-battery laminate layer is divided into multiple common voltage electrode, at touch-control
During sensing modes, as sensing points；Multiple and circuit, each and circuit have multiple inputs, use
To receive multiple sensing signals that the correspondingly received end of this display floater is provided, each and circuit
The plurality of sensing signal is performed to add computing or without computing by the plurality of input, thus produces and letter
Number in the corresponding output end of this and circuit；And multiple reception circuit, it is respectively coupled to the plurality of and electric
The output on road, in order to process this and signal, thus produces respectively and is worth, determining touch position according to this.
The purpose of the present invention also can be applied to the following technical measures to achieve further.
It is also preferred that the left aforesaid embedded touch screen, corresponding one and only of this sensing points of each of which
One and circuit.
It is also preferred that the left aforesaid embedded touch screen, each of which receives circuit and comprises simulation numeral
Converter.
It is also preferred that the left aforesaid embedded touch screen, wherein said multiple and circuit number is equal to institute
State the number of multiple reception circuit.
It is also preferred that the left aforesaid embedded touch screen, wherein in continuous multiple periods, should be with circuit
Multiple inputs to add computing different with the combination without computing.
It is also preferred that the left aforesaid embedded touch screen, wherein n continuous multiple periods, it is somebody's turn to do and electricity
N the input on road to add computing different with the combination without computing, wherein n is the positive integer more than two.
The purpose of the present invention realizes the most by the following technical solutions.The present invention provides a kind of parallel type
Sensing circuit, comprises: multiple and circuit, and each and circuit have multiple inputs, aobvious in order to receive
Show multiple sensing signals that the corresponding sense point of plate is provided, each and multiple inputs pair of circuit
The plurality of sensing signal performs to add computing or without computing, thus produces and signal is in this and the phase of circuit
Answer output；And multiple reception circuit, it is respectively coupled to the plurality of and circuit output, in order to
Process and be somebody's turn to do and signal, thus produce respectively and be worth, determine touch position according to this.
The purpose of the present invention also can be applied to the following technical measures to achieve further.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein each sensing points phase of this display floater
Answer one and only one and circuit.
It is also preferred that the left aforesaid parallel type sensing circuit, each of which receives circuit and comprises simulation numeral
Converter.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein said multiple and circuit number is equal to institute
State the number of multiple reception circuit.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein in continuous multiple periods, should be with circuit
Multiple inputs to add computing different with the combination without computing.
It is also preferred that the left aforesaid parallel type sensing circuit, wherein n continuous multiple periods, it is somebody's turn to do and electricity
N the input on road to add computing different with the combination without computing, wherein n is the positive integer more than two.
By technique scheme, touch sensing device of the present invention, embedded touch screen and parallel type
Sensing circuit at least has following advantages and beneficial effect: the present invention applies to contact panel or embedded
The parallel type sensing circuit of formula Touch Screen, can save circuit area and cost, will not produce again and prolong
Late.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the present invention's
Technological means, and can being practiced according to the content of specification, and in order to allow the above-mentioned of the present invention and
Other objects, features and advantages can become apparent, and below especially exemplified by preferred embodiment, and coordinates attached
Figure, describes in detail as follows.
Accompanying drawing explanation
Figure 1A is the schematic diagram of mutual capacitance touch sensing device.
Figure 1B is the schematic diagram of self-capacitance touch sensing device.
Fig. 2 A and Fig. 2 B is the schematic diagram of timesharing touch sensing device.
Fig. 3 is the schematic diagram of the touch sensing device of the embodiment of the present invention.
Fig. 4 is the sequential of Fig. 3 and circuit.
Fig. 5 is the circuit diagram of Fig. 3 and circuit.
Fig. 6 is the sequential chart of the sensing signal according to Fig. 4 operation.
Fig. 7 is the circuit diagram of the equivalent capacity of common voltage electrode, source electrode line and gate line.
Fig. 8 is that another embodiment of the present invention is applicable to embedded sensing device and circuit (Fig. 3)
Sequential.
Fig. 9 is the sequential chart of the sensing signal according to Fig. 8 operation.
[main element symbol description]
100: mutual capacitance touch sensing device 102: self-capacitance touch sensing device
200: touch sensing device 11: receive circuit
300: touch sensing device 31: contact panel
32: parallel type sensing circuit 321: and circuit
322: reception circuit 51: amplifier
TX1～TX3: transmission end RX1～RX6: receiving terminal/sensing signal
RX11～RX15: receiving terminal RX21～RX23: receiving terminal
SWRX1: the first switch～SWRX1: second switch
SWRX2: the first switch～SWRX2: second switch
SWRX3: the first switch～SWRX3: second switch
CRX1～CRX3: equivalent capacity S: node
C: capacitor S1, S2, S3: source electrode
G1, G2, G3: grid CC1、CC2: equivalent capacity
CS1、CS2、CS3: equivalent capacity CG1、CG2、CG3: equivalent capacity
VCOM1, VCOM2, VCOM3: common voltage electrode
Detailed description of the invention
By further illustrating the technological means and effect that the present invention taked by reaching predetermined goal of the invention,
Below in conjunction with accompanying drawing and preferred embodiment, to a kind of touch sensing device proposed according to the present invention, interior
Embedded Touch Screen and the detailed description of the invention of parallel type sensing circuit, structure, feature and effect thereof,
After describing in detail such as.
Fig. 3 shows the schematic diagram of the touch sensing device 300 of the embodiment of the present invention.Touching of the present embodiment
Control sensing device 300 in conjunction with display to form Touch Screen, but can be not limited to this.
The touch sensing device 300 of the present embodiment comprises contact panel 31, and is applicable to contact panel 31
Parallel type sensing circuit 32.Contact panel 31 can be electric resistance touch-control panel, capacitance type touch-control panel
Or optical touch control panel.Contact panel 31 can comprise illustrated in row electrode and row electrode, such as Fig. 3
3x6 array.In the present embodiment, receiving terminal RX1～RX6 is corresponding to row electrode, and at receiving terminal
RX1～RX6 provides (or generation) sensing signal.
The parallel type sensing circuit 32 of the present embodiment comprises multiple and (summing) circuit 321.Often
One has multiple input, in order to receive multiple sensing signals of correspondingly received end with circuit 321.Example
As, have three inputs, in order to receive correspondingly received end RX1～RX3 with circuit 321 on the right side of Fig. 3
Three sensing signals.Similar situation, has three inputs with circuit 321 on the left of Fig. 3, in order to
Receive three sensing signals of correspondingly received end RX4～RX6.It should be noted that each receiving terminal
Corresponding one and only one and circuit 321.One of feature according to the present embodiment, and circuit 321 be use
To add up or to deduct sensing signal, thus produce one and signal in corresponding output end.
The parallel type sensing circuit 32 of the present embodiment also comprises multiple reception circuit (or receiving unit) 322,
Such as analog-digital converter.These receive circuit 322 and are respectively coupled to the defeated of corresponding and circuit 321
Go out end.In the present embodiment, and circuit 321 number equal to receive circuit 322 number.Receive
Circuit 322 is to process and signal, thus produces one and value, determines touch position according to this.
The sequential with circuit 321 of Fig. 4 diagrammatic illustration 3.Fig. 4 only shows time t0To t3Sequential,
The repeated sequential obtaining continuing.In the drawings, RX1～RX6 represents corresponding sense signal, "+"
Represent and corresponding sense signal is performed to add computing by circuit 321, and "-" represents with circuit 321 accordingly
Sensing signal performs to subtract computing.In three periods of the present embodiment, and the adding of the input of circuit 321
Computing and the combination inequality subtracting computing.Such as, at time t0, and circuit 321 has "+,+,-" computing combination,
At time t1, and circuit 321 has "+,-,+" computing combination, and at time t2, and circuit 321 has "-,+,+"
Computing is combined.In general, in n continuous period, and n input of circuit 321 add computing
With subtract the combination inequality of computing, wherein n is the positive integer more than two.
On the right side of assuming with circuit 321 within three periods of Fig. 4, sequentially obtain from receiving circuit 322
Being a, b and c with value, it is represented by:
Or
After reception circuit 322 receives and be worth a, b and c, sensing signal can be obtained according to this
RX1～RX3.
Fig. 5 shows Fig. 3 and circuit 321 circuit diagram.In the drawings, CRX1、CRX2With CRX3
Represent the equivalent capacity of receiving terminal RX1～RX3 of contact panel 31.Corresponding for receiving terminal RX1
Input, when performing to add computing, Guan Bi the first switch SWRX1Positive voltage is preset (such as to receive
3V)；Otherwise, when performing to subtract computing, Guan Bi second switch～SWRX1With ground connection.Similar situation,
Input corresponding for receiving terminal RX2, when performing to add computing, Guan Bi the first switch SWRX2With
Receive and preset positive voltage (such as 3V)；Otherwise, when performing to subtract computing, Guan Bi second switch～SWRX2
With ground connection.Furthermore, input corresponding for receiving terminal RX3, when performing to add computing, Guan Bi the
One switch SWRX3Positive voltage (such as 3V) is preset to receive；Otherwise, when performing to subtract computing, close
Close second switch～SWRX3With ground connection.
Equivalent capacity C corresponding to receiving terminal RX1～RX3 of contact panel 31RX1、CRX2With CRX3
It is coupled to node S, is followed by amplifier 51 (such as operational amplifier).Capacitor C is coupled to amplifier
Between output and the input of 51.When performing to add computing, capacitor C is charged, and when execution subtracts
Then capacitor C is discharged during computing.
According to above-described embodiment, it is less than receiving terminal owing to receiving the number of circuit 32, thus can save
Circuit area and cost, therefore the present embodiment framework compared with Figure 1A or Figure 1B more can be suitably used for large scale
Touch sensing device.Additionally, due to receive circuit 32 to process all sensing signals, rather than such as figure simultaneously
Time-sharing format shown in 2A, Fig. 2 B, therefore the present embodiment will not produce delay.
Fig. 6 shows the sequential chart of sensing signal RX1～RX6 according to Fig. 4 operation.With circuit 321
Each input should have mutually and add computing or subtract computing.Therefore, at (such as t of all time cycles0
To t3) all can perform charge or discharge.
For self-capacitance embedded touch screen (hereinafter referred to as Touch Screen), the common voltage of display floater
(VCOM) layer can be cut into multiple common voltage electrode, when touch-control sensing pattern, as sensing points
(or receiving (RX) electrode)；And when showing pattern, these common voltage electrodes are connected to common voltage (example
Such as DC voltage).
For miniaturization Touch Screen, common voltage electrode, source electrode line are very close to each other with gate line,
Therefore Touch Screen has stray capacitance.Fig. 7 show common voltage electrode, source electrode line and gate line etc.
The circuit diagram of effect electric capacity.VCOM1, VCOM2 represent three adjacent common voltage electrodes with VCOM3.
CC1With CC2Represent the equivalent capacity between common voltage electrode.CS1、CS2With CS3Represent common-battery piezoelectricity
Pole (that is, VCOM1, VCOM2 and VCOM3) and between the source electrode line of lower section etc.
Effect electric capacity.CG1、CG2With CG3Expression common voltage electrode (that is, VCOM1, VCOM2 and VCOM3)
And the equivalent capacity between the gate line of lower section.
According to the operation of Fig. 4 Yu Fig. 6, each common voltage electrode corresponding equivalent capacity (such as CS
With CG), at (such as t of all time cycles0To t3) all can perform charge or discharge.
Fig. 8 illustrates another embodiment of the present invention and is applicable to (scheming with circuit 321 of embedded sensing device
3) sequential.Fig. 8 only shows time t0To t3Sequential, the repeated sequential obtaining continuing.?
In graphic, RX1～RX6 represents corresponding sense signal, "+" represent and with circuit 321, corresponding sense is believed
Number execution adds computing, and " 0 " represents and circuit 321 does not perform computing to corresponding sense signal.In this reality
Execute three periods of example, and the group adding computing and nothing (inactive) computing of the input of circuit 321
Close inequality.Such as, at time t0, and circuit 321 has "+,+, 0 " computing combination, at time t1, and electricity
Road 321 has "+, 0 ,+" computing combination, and at time t2, and circuit 321 has " 0 ,+,+" computing combination.One
For as, in n continuous period, and n input of circuit 321 add computing with without the group of computing
Closing inequality, wherein n is the positive integer more than two.
On the right side of assuming with circuit 321 within three periods of Fig. 8, sequentially obtain from receiving circuit 322
Being a, b and c with value, it is represented by:
Or
After reception circuit 322 receives and be worth a, b and c, sensing signal can be obtained according to this
RX1～RX3.
Fig. 9 shows the sequential chart of sensing signal RX1～RX6 according to Fig. 8 operation.With circuit 321
Each input should have mutually and add computing or without computing.It should be noted that when corresponding sense signal
When not performing computing (that is, without computing), the most do not have the execution of charge/discharge.Compared to Fig. 6,
Fig. 9 can save the power consumption of 1/3rd.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any form
On restriction, although the present invention is disclosed above with preferred embodiment, but is not limited to this
Bright, any those skilled in the art, in the range of without departing from technical solution of the present invention, when available
The technology contents of the disclosure above is made a little change or is modified to the Equivalent embodiments of equivalent variations, as long as being
Without departing from the content of technical solution of the present invention, according to the technical spirit of the present invention, above example is made
Any simple modification, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (26)
1. a touch sensing device, it is characterised in that comprise:
Contact panel, comprises row electrode and row electrode；
Multiple and circuit, each and circuit have multiple inputs, in order to receive this contact panel
Multiple sensing signals that correspondingly received end is provided, each and the plurality of input totalling of circuit
Or deduct the plurality of sensing signal, thus produce and signal is in this and the corresponding output end of circuit；And
Multiple reception circuit, are respectively coupled to the plurality of and circuit output, in order to process this
And signal, thus produce respectively and be worth, determine touch position according to this.
Touch sensing device the most according to claim 1, it is characterised in that this contact panel every
One receiving terminal corresponding one and only one and circuit.
Touch sensing device the most according to claim 1, it is characterised in that each receives circuit
Comprise analog-digital converter.
Touch sensing device the most according to claim 1, it is characterised in that the plurality of and circuit
Number equal to the number of the plurality of reception circuit.
Touch sensing device the most according to claim 1, it is characterised in that in continuous multiple periods,
Should and circuit multiple inputs to add computing different with the combination subtracting computing.
Touch sensing device the most according to claim 1, it is characterised in that the most multiple at n
Period, should and circuit n input to add computing different with the combination subtracting computing, wherein n is big
In the positive integer of two.
Touch sensing device the most according to claim 1, it is characterised in that each is somebody's turn to do and circuit
Comprise:
First switch, corresponding to each input, when performing to add computing, this first switch closes
Close and preset positive voltage to receive；
Second switch, corresponding to each input, when performing to subtract computing, this second switch closes
Close with ground connection；
Amplifier, is coupled to the correspondingly received of this first switch, this second switch and this contact panel
End；And
Capacitor, is coupled between the output of this amplifier and input, when performing to add computing
This capacitor is charged, when performing to subtract computing to this capacitor discharge.
8. a parallel type sensing circuit, it is characterised in that comprise:
Multiple and circuit, each and circuit have multiple inputs, in order to receive the phase of contact panel
Answer multiple sensing signals that receiving terminal is provided, the plurality of input of each and circuit add up or
Deduct the plurality of sensing signal, thus produce and signal is in this and the corresponding output end of circuit；And
Multiple reception circuit, are respectively coupled to the plurality of and circuit output, in order to process this
And signal, thus produce respectively and be worth, determine touch position according to this.
Parallel type sensing circuit the most according to claim 8, it is characterised in that this contact panel
Each receiving terminal corresponding one and only one and circuit.
Parallel type sensing circuit the most according to claim 8, it is characterised in that each receives
Circuit comprises analog-digital converter.
11. parallel type sensing circuits according to claim 8, it is characterised in that the plurality of and
The number of circuit is equal to the number of the plurality of reception circuit.
12. parallel type sensing circuits according to claim 8, it is characterised in that the most multiple
Period, should and circuit multiple inputs to add computing different with the combination subtracting computing.
13. parallel type sensing circuits according to claim 8, it is characterised in that at n continuously
Multiple periods, should and circuit n input to add computing different with the combination subtracting computing, wherein n
For the positive integer more than two.
14. parallel type sensing circuits according to claim 8, it is characterised in that each should and
Circuit comprises:
First switch, corresponding to each input, when performing to add computing, this first switch closes
Close and preset positive voltage to receive；
Second switch, corresponding to each input, when performing to subtract computing, this second switch closes
Close with ground connection；
Amplifier, is coupled to the correspondingly received of this first switch, this second switch and this contact panel
End；And
Capacitor, is coupled between the output of this amplifier and input, when performing to add computing
This capacitor is charged, when performing to subtract computing to this capacitor discharge.
15. 1 kinds of embedded touch screens, it is characterised in that comprise:
Display floater, its common-battery laminate layer is divided into multiple common voltage electrode, when touch-control sensing pattern,
As sensing points；
Multiple and circuit, each and circuit have multiple inputs, in order to receive this display floater
Multiple sensing signals that correspondingly received end is provided, the plurality of input of each and circuit is to institute
State multiple sensing signal to perform to add computing or without computing, thus produce and corresponding in this and circuit of signal
Output；And
Multiple reception circuit, are respectively coupled to the plurality of and circuit output, in order to process this
And signal, thus produce respectively and be worth, determine touch position according to this.
16. embedded touch screens according to claim 15, it is characterised in that each this sense
Measuring point corresponding one and only one and circuit.
17. embedded touch screens according to claim 15, it is characterised in that each receives
Circuit comprises analog-digital converter.
18. embedded touch screens according to claim 15, it is characterised in that the plurality of and
The number of circuit is equal to the number of the plurality of reception circuit.
19. embedded touch screens according to claim 15, it is characterised in that the most multiple
Period, should and circuit multiple inputs to add computing different with the combination without computing.
20. according to the embedded touch screen described in the claim 15 of Shen, it is characterised in that at n even
Continuous multiple periods, should and circuit n input to add computing different with the combination without computing, wherein n
For the positive integer more than two.
21. 1 kinds of parallel type sensing circuits, it is characterised in that comprise:
Multiple and circuit, each and circuit have multiple inputs, in order to receive the corresponding of display board
Multiple sensing signals that sensing points is provided, multiple inputs of each and circuit are to the plurality of sense
Survey signal to perform to add computing or without computing, thus produce and signal is in this and the corresponding output end of circuit；
And
Multiple reception circuit, are respectively coupled to the plurality of and circuit output, in order to process this
And signal, thus produce respectively and be worth, determine touch position according to this.
22. parallel type sensing circuits according to claim 21, it is characterised in that this display floater
Each sensing points corresponding one and only one and circuit.
23. parallel type sensing circuits according to claim 21, it is characterised in that each receives
Circuit comprises analog-digital converter.
24. parallel type sensing circuits according to claim 21, it is characterised in that the plurality of and
The number of circuit is equal to the number of the plurality of reception circuit.
25. parallel type sensing circuits according to claim 21, it is characterised in that the most multiple
Period, should and circuit multiple inputs to add computing different with the combination without computing.
26. parallel type sensing circuits according to claim 21, it is characterised in that at n continuously
Multiple periods, should and circuit n input to add computing different with the combination without computing, wherein n
For the positive integer more than two.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/626,777 | 2015-02-19 | ||
| US14/626,777 US20160246406A1 (en) | 2015-02-19 | 2015-02-19 | Touch sensing device and concurrent sensing circuit |
| TW104107858 | 2015-03-12 | ||
| TW104107858 | 2015-03-12 |
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| CN105912174A true CN105912174A (en) | 2016-08-31 |
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| CN107894857A (en) * | 2016-10-04 | 2018-04-10 | 禾瑞亚科技股份有限公司 | Touch-control processing unit, electronic system and its touch-control processing method |
| CN113589962A (en) * | 2020-04-30 | 2021-11-02 | 奇景光电股份有限公司 | Touch control equipment and touch control driving device and operation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10901551B2 (en) * | 2018-03-01 | 2021-01-26 | Microchip Technology Incorporated | Method and system for touchless gesture detection and hover and touch detection |
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| CN113589962B (en) * | 2020-04-30 | 2023-07-21 | 奇景光电股份有限公司 | Touch equipment, touch driving device and operation method thereof |
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| Publication number | Publication date |
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| TWI573058B (en) | 2017-03-01 |
| TW201631453A (en) | 2016-09-01 |
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