CN102193694B - Electronic device for compensating capacitance tolerance - Google Patents
Electronic device for compensating capacitance tolerance Download PDFInfo
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- CN102193694B CN102193694B CN 201010133783 CN201010133783A CN102193694B CN 102193694 B CN102193694 B CN 102193694B CN 201010133783 CN201010133783 CN 201010133783 CN 201010133783 A CN201010133783 A CN 201010133783A CN 102193694 B CN102193694 B CN 102193694B
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Abstract
The invention relates to an electronic device. The electronic device comprises a touch input device, a touch sensing circuit coupled to the touch input device, and a capacitance tolerance compensation circuit, wherein the capacitance tolerance compensation circuit comprises a first tolerance compensation capacitor array which is coupled to reference voltage or a driving signal in response to a control signal of the touch sensing circuit, is coupled to one of first coupling voltage and second coupling voltage of the touch input device in response to the control signal, and adjusts an output equivalence capacitance value in response to the control signal so as to compensate at least one of ground (GND) parasitic capacitance and cross-coupling capacitance of the touch input device.
Description
Technical field
But the present invention relates to a kind of electronic installation of building-out capacitor deviation.
Background technology
At present, developed the touch switch.The touch switch for example is capacitance-type switch etc.For ease of use, the contact panel of having developed at present (touch panel) or demonstration contact panel (having the function that shows with touch-control simultaneously), it can be imported, click etc. by the user, and it can be applicable in the middle of the various electronic installations, for example in the mobile phone.So, can allow the user directly at contact panel or show the contact panel input or click picture, so that the operator scheme of convenient and hommization to be provided.Contact panel or demonstration contact panel have multiple, and capacitance type touch-control panel, condenser type show that contact panel belongs to wherein.
When user's operating capacitance touch panel, when condenser type shows contact panel or capacitance-type switch, the capacitance of the testing capacitance that it is inner can change with user's operation.So, if can survey capacitance and its variation of testing capacitance, i.e. detectable (sensation) user's operation.The positioning principle of capacitance type touch-control panel is to utilize the changes in capacitance that is embedded in the induction grid in the contact panel to judge the position of contact point.
Fig. 1 shows the synoptic diagram of the contact panel 10 of prior art.Please refer to Fig. 1, contact panel 10 comprises that (X1～Xm) (Y1～Yn), m and n are positive integer to many directions X leads, and m can equate with n or be unequal with many Y-direction leads.Directions X lead and Y-direction lead are embedded in different layers.Directions X lead and Y-direction lead are staggered, to form the induction grid.Can form a cross coupling capacitor (as the cross coupling capacitor 100a among Fig. 1,100b and 100c) in each point of crossing of directions X lead and Y-direction lead.Be example with Fig. 1, these contact panel 10 total m*n cross coupling capacitors.
When object (as finger or pointer) touch-control during to contact panel 10, object with respond to the capacitance that coupled relation between grid will change the cross coupling capacitor that is close to.The variable quantity of the capacitance of the detectable cross coupling capacitor of detection circuit is surveyed the coordinate position of contact point.
Yet, if certain on the contact panel (a bit) lead is because the bad or lead of the technology equal reason of shape each other, cause the stray capacitance over the ground of each lead may be unequal each other, or those cross coupling capacitors each other unequal (such as, cross coupling capacitor 100a～100c is unequal each other), then cause the erroneous judgement of position of touch easily.
So, the invention provides a kind of capacitance deviation compensating circuit, it can compensate the deviate of stray capacitance over the ground, and/or the deviate of compensation cross coupling capacitor.
Summary of the invention
The present invention relates to a kind of electronic installation, but the deviation of stray capacitance over the ground of its compensating touch control panel, and/or the cross coupling capacitor deviation.
One embodiment of the present invention have proposed a kind of electronic installation, comprising: touch-control input device; Touch control sensing circuit, it is coupled to this touch-control input device; And capacitance deviation compensating circuit.This capacitance deviation compensating circuit comprises: first selector, select one of first coupled voltages of this touch-control input device and second coupled voltages in response to the control signal of this touch control sensing circuit; Second selector selects to drive one of signal or reference voltage in response to this control signal; And the first deviation compensation capacitor array, be coupled to this first selector or this second selector, adjust the output equivalent capacitance in response to this control signal, with the stray capacitance over the ground that compensates this touch-control input device and cross coupling capacitor one of at least.
According to embodiment of the present invention, in this electronic installation, when the first deviation compensation capacitor array compensates this of direction lead of this touch-control input device over the ground during stray capacitance, this first selector is selected this first coupled voltages that this direction lead exports and is exported this first deviation compensation capacitor array to, and this second selector is selected this reference voltage and exported this first deviation compensation capacitor array to.
According to embodiment of the present invention, in this electronic installation, when the first deviation compensation capacitor array compensates this cross coupling capacitor of direction lead of this touch-control input device, this first selector is selected this first coupled voltages that this direction lead exports and is exported this first deviation compensation capacitor array to, and this second selector is selected this driving signal and exported this first deviation compensation capacitor array to.
Another embodiment of the present invention has proposed a kind of electronic installation, comprising: touch-control input device; Touch control sensing circuit, it is coupled to this touch-control input device; And capacitance deviation compensating circuit.The capacitance deviation compensating circuit comprises: first selector, select one of first coupled voltages of this touch-control input device and second coupled voltages in response to the control signal of this touch control sensing circuit; Second selector is selected one of this first coupled voltages and this second coupled voltages in response to this control signal; The first deviation compensation capacitor array is coupled to this first selector and drives signal, adjusts the output equivalent capacitance in response to this control signal, to compensate the cross coupling capacitor of this touch-control input device; And the second deviation compensation capacitor array, be coupled to this second selector and reference voltage, adjust the output equivalent capacitance in response to this control signal, to compensate the stray capacitance over the ground of this touch-control input device.
Another embodiment of the present invention has proposed a kind of electronic installation, comprising: touch-control input device; Touch control sensing circuit, it is coupled to this touch-control input device; And capacitance deviation compensating circuit.The capacitance deviation compensating circuit comprises: the first deviation compensation capacitor array, be coupled to reference voltage in response to the control signal of this touch control sensing circuit or drive signal, be coupled to one of first coupled voltages of this touch-control input device and second coupled voltages in response to this control signal, adjust the output equivalent capacitance in response to this control signal, with the stray capacitance over the ground that compensates this touch-control input device and cross coupling capacitor one of at least.
According to embodiment of the present invention, in this electronic installation, this capacitance deviation compensating circuit also comprises: first selector, and one of this first coupled voltages of conducting and this second coupled voltages are to this first deviation compensation capacitor array in response to this control signal; And second selector, one of this reference voltage of conducting and this driving signal are to this first deviation compensation capacitor array in response to this control signal.
Preferably, when the first deviation compensation capacitor array compensates this of direction lead of this touch-control input device over the ground during stray capacitance, this first coupled voltages that this direction lead of this first selector conducting is exported is to this first deviation compensation capacitor array, and this this reference voltage of second selector conducting is to this first deviation compensation capacitor array.
Preferably, when the first deviation compensation capacitor array compensates this cross coupling capacitor of direction lead of this touch-control input device, this first coupled voltages that this direction lead of this first selector conducting is exported is to this first deviation compensation capacitor array, and this second selector conducting should drive signal to this first deviation compensation capacitor array.
According to embodiment of the present invention, in this electronic installation, this first deviation compensation capacitor array is coupled to this driving signal, to compensate this cross coupling capacitor of this touch-control input device; This capacitance deviation compensating circuit also comprises: the second deviation compensation capacitor array is coupled to this reference voltage, with this stray capacitance over the ground that compensates this touch-control input device; First selector, one of this first coupled voltages of conducting and this second coupled voltages are to this first deviation compensation capacitor array in response to this control signal; And second selector, one of this reference voltage of conducting and this driving signal are to this second deviation compensation capacitor array in response to this control signal.
For foregoing of the present invention can be become apparent, embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 shows the synoptic diagram of the contact panel of prior art.
Fig. 2 shows the electronic installation synoptic diagram of first embodiment of the invention.
Fig. 3 A shows according to the compensation of the first embodiment of the invention equivalent circuit diagram of stray capacitance over the ground.
Fig. 3 B shows the equivalent circuit diagram according to the compensation cross coupling capacitor of first embodiment of the invention.
Fig. 4 shows the synoptic diagram of the electronic installation of second embodiment of the invention.
Embodiment
First embodiment
Fig. 2 shows the synoptic diagram according to the electronic installation of first embodiment of the invention.As shown in Figure 2, electronic installation 200 comprises that contact panel 210, drive signal generation circuit 220, directions X drive channel selecting module 230, Y-direction drives channel selecting module 240, selection and detecting module 250 and capacitance deviation compensating circuit 260.Directions X drives channel selecting module 230, Y-direction drives channel selecting module 240 and can be considered touch control sensing circuit with selection and detecting module 250.
Drive signal generation circuit 220 drives signal D to directions X lead X1～Xm and Y-direction lead X1～Xn in order to produce.Drive signal D for example but be not limited to that square wave driving signal, triangular wave drive signal, the string ripple drives signal etc.
Directions X drives channel selecting module 230 and comprises m switch, and each switch is controlled by indivedual control signals that control circuit 2511 produces, and those m control signal inputs to individual switches by signal wire 232 respectively.Each switch is coupled between the corresponding directions X lead with each of drive signal generation circuit 220 X1～Xm.The coupled voltages of directions X lead X1～Xm inputs to by signal wire 231 respectively and selects and detecting module 250.
Y-direction drives channel selecting module 240 and comprises n switch, and each switch is controlled by indivedual control signals that control circuit 2511 produces, and those n control signal inputs to individual switches by signal wire 242 respectively.Each switch is coupled between the corresponding Y-direction lead with each of drive signal generation circuit 220 Y1～Yn.The coupled voltages of Y-direction lead Y1～Yn inputs to by signal wire 241 respectively and selects and detecting module 250.
Select to comprise selection module 251 and differential detection module 252 with detecting module 250.Select module 251 to comprise control circuit 2511, the first multitask selector switch 2512 and the second multitask selector switch 2513.Capacitance deviation compensating circuit 260 comprises: the 3rd multitask selector switch 261, the 4th multitask selector switch 262 and deviation compensation capacitor array 263.Deviation compensation capacitor array 263 comprises a plurality of building-out capacitors.
After contact panel 210 manufacturings are finished, this contact panel 210 is measured, with the stray capacitance over the ground of record all directions lead, and all cross coupling capacitors of this panel, to determine whether to have capacitance deviation.The capacitance of those building-out capacitors is relevant to the departure of the stray capacitance over the ground of all directions lead, and the departure of all cross coupling capacitors of this panel.
The principle of operation of first embodiment now will be described.Control circuit 2511 is scanning (conducting) switch in regular turn.Suppose that the user touches the point of crossing of direction lead X2 and Y1.Under the control of control circuit 2511, corresponding switch is switched on and makes that driving signal D inputs to Y-direction lead Y1; And coupled voltages VY1X1 and VY1X2 are respectively via the first multitask selector switch 2512 and the second multitask selector switch 2513 and be coupled to differential detection module 252.Coupled voltages VY1X1 and VY1X2 representative drive signal D be applied to cross coupling capacitor CY1X1 and CY1X2 the coupled voltages of generation respectively.Then, in next sequential, drive signal D and still input to Y-direction lead Y1; And coupled voltages VY1X2 and VY1X3 are respectively via the first multitask selector switch 2512 and the second multitask selector switch 2513 and be coupled to differential detection module 252.(namely do not have capacitance deviation) in the ideal case, differential detection module 252 can detect VY1X2 ≠ VY1X1 and VY1X2 ≠ VY1X3.So, via the output signal S of differential detection module 252, can judge that the user touches the point of crossing of direction lead X2 and Y1.
Certainly, when surveying position of touch, control circuit 2511 also can make and drive signal D and input to the directions X lead, and the coupled voltages that makes the Y-direction lead is coupled to differential detection module 252 via the first multitask selector switch 2512 and the second multitask selector switch 2513.
Yet in actual conditions, the stray capacitance over the ground of each lead may differ from one another, and/or each cross coupling capacitor may differ from one another.So, hereinafter describe first embodiment respectively and compensate the deviate of stray capacitance and the deviate of cross coupling capacitor over the ground as capacitance deviation compensating circuit 260 how.
When carrying out the compensation of capacitance deviation value, under the control of control circuit 2511, the 3rd multitask selector switch 261 is connected to deviation compensation capacitor array 263 with the output signal of one of the first multitask selector switch 2512 or second multitask selector switch 2513; The 4th multitask selector switch 262 inputs to deviation compensation capacitor array 263 with one of reference voltage source VREF or driving signal D; Control circuit 2511 can be selected the adequate compensation electric capacity in the deviation compensation capacitor array 263.
(1) compensates the deviate of stray capacitance over the ground
The stray capacitance over the ground of supposing directions X lead X2 has deviation.As above-mentioned, when differential detecting module 252 when relatively coupled voltages VY1X1 (output signal of the first multitask selector switch 2512) is with VY1X2 (output signal of the second multitask selector switch 2513), under the control of control circuit 2511, the 3rd multitask selector switch 261 is connected to deviation compensation capacitor array 263 with the output signal of the second multitask selector switch 2513; And the 4th multitask selector switch 262 reference voltage source VREF is inputed to deviation compensation capacitor array 263; The adequate compensation electric capacity that control circuit 2511 is selected in the deviation compensation capacitor array 263.This equivalence circuit as shown in Figure 3A.In Fig. 3 A, CX2 represents the stray capacitance over the ground of directions X lead X2, and Δ CX2 representative is to the building-out capacitor of the stray capacitance over the ground of directions X lead X2.
Such as, there is corresponding tables control circuit 2511 inside, and whether the stray capacitance over the ground of all direction leads of record Trackpad 210 has deviation and corresponding building-out capacitor thereof.When control circuit 2511 select to have deviation over the ground the coupled voltages on the direction lead of stray capacitance input to differential detection module 252, control circuit 2511 can compensate by selecting adequate compensation electric capacity.
(2) deviate of compensation cross coupling capacitor
Suppose that the cross coupling capacitor CY1X2 between directions X lead X2 and Y-direction lead Y1 has deviation.As above-mentioned, when differential detecting module 252 when relatively coupled voltages VY1X1 (output signal of the first multitask selector switch 2512) is with VY1X2 (output signal of the second multitask selector switch 2513), under the control of control circuit 2511, the 3rd multitask selector switch 261 can be connected to deviation compensation capacitor array 263 with the output signal of the second multitask selector switch 2513; And 262 meetings of the 4th multitask selector switch input to deviation compensation capacitor array 263 with driving signal D; Control circuit 2511 can be selected the adequate compensation electric capacity in the deviation compensation capacitor array 263.This equivalence circuit is shown in Fig. 3 B.In Fig. 3 B, CY1X2 represents the cross coupling capacitor between directions X lead X2 and Y-direction lead Y1, and Δ CX2Y1 representative is to the building-out capacitor of this cross coupling capacitor CY1X2.
Such as, there is corresponding tables control circuit 2511 inside, and whether its all cross coupling capacitors that record this Trackpad 210 have deviation and corresponding building-out capacitor thereof.Select to have the coupled voltages on the direction lead of deviation cross coupling capacitor to input to differential detection module 252 when control circuit 2511, control circuit 2511 can compensate by selecting adequate compensation electric capacity.
In above-mentioned example, can compensate stray capacitance and cross coupling capacitor over the ground.That is to say that a plurality of building-out capacitors of deviation compensation capacitor array 263 inside can compensate stray capacitance and cross coupling capacitor over the ground; Yet, at any one time, can only be at one of stray capacitance or cross coupling capacitor carry out the capacitance deviation compensation over the ground.
But, in other of first embodiment of the invention may example, only compensate over the ground one of stray capacitance or cross coupling capacitor.That is to say that the building-out capacitor of deviation compensation capacitor array 263 inside only is used for compensating over the ground one of stray capacitance or cross coupling capacitor.
Second embodiment
Fig. 4 shows the synoptic diagram according to the electronic installation 200A of second embodiment of the invention.Most assembly of second embodiment of the invention is same or similar in first embodiment, so its details does not repeat at this.
In second embodiment of the invention, capacitance deviation compensating circuit 260A also comprises: the first deviation compensation capacitor array 263A1 and the second deviation compensation capacitor array 263A2.The first deviation compensation capacitor array 263A1 and the second deviation compensation capacitor array 263A2 respectively comprise a plurality of building-out capacitors.Wherein, the first deviation compensation capacitor array 263A1 can compensate all cross coupling capacitors of this contact panel 210, and the second deviation compensation capacitor array 263A2 then compensates the stray capacitance over the ground of all directions lead.
The principle of operation of second embodiment now will be described.Similarly, when the building-out capacitor deviate, under the control of control circuit 2511, the 3rd multitask selector switch 261 is connected to the first deviation compensation capacitor array 263A1 with the output signal of one of the first multitask selector switch 2512 or second multitask selector switch 2513; The 4th multitask selector switch 262 is connected to the second deviation compensation capacitor array 263A2 with the output signal of one of the first multitask selector switch 2512 or second multitask selector switch 2513.The first deviation compensation capacitor array 263A1 also receives and drives signal D; And the second deviation compensation capacitor array 263A2 also receives reference voltage VREF.Control circuit 2511 can be selected adequate compensation electric capacity and the interior adequate compensation electric capacity of the second deviation compensation capacitor array 263A2 in the first deviation compensation capacitor array 263A1.In second embodiment of the invention, can compensate stray capacitance and cross coupling capacitor over the ground simultaneously.
In sum, though the present invention discloses as above with embodiment, so it is not in order to limit the present invention.The person skilled in the art of the present invention without departing from the spirit and scope of the present invention, can do various changes and retouching.Therefore, protection scope of the present invention should define according to the scope of accompanying Claim book.
The primary clustering symbol description
10,210: contact panel
X1～Xm:X direction lead
Y1～Yn:Y direction lead
100a, 100b, 100c: cross coupling capacitor
200,200A: electronic installation
220: drive signal generation circuit
The 230:X direction drives channel selecting module
The 240:Y direction drives channel selecting module
250: select and detecting module
251: select module
252: the differential detection module
2511: control circuit
2512,2513,261,262: the multitask selector switch
260,260A: capacitance deviation compensating circuit
263,263A1,263A2: deviation compensation capacitor array
CX2: stray capacitance over the ground
CY1X2: cross coupling capacitor
Δ CX2, Δ CX2Y1: building-out capacitor.
Claims (9)
1. electronic installation comprises:
Touch-control input device;
Touch control sensing circuit is coupled to described touch-control input device; And
The capacitance deviation compensating circuit comprises:
First selector is selected one of first coupled voltages of described touch-control input device and second coupled voltages in response to the control signal of described touch control sensing circuit;
Second selector selects to drive one of signal or reference voltage in response to described control signal; And
The first deviation compensation capacitor array, be coupled to described first selector and described second selector, adjust the output equivalent capacitance in response to described control signal, to utilize reference voltage to compensate the stray capacitance over the ground of described touch-control input device or to utilize the cross coupling capacitor that drives the described touch-control input device of signal compensation.
2. electronic installation according to claim 1, wherein, when the first deviation compensation capacitor array compensates the described stray capacitance over the ground of direction lead of described touch-control input device, described first selector is selected described first coupled voltages that described direction lead exports and is exported the described first deviation compensation capacitor array to, and described second selector is selected described reference voltage and exported the described first deviation compensation capacitor array to.
3. electronic installation according to claim 1, wherein, when the first deviation compensation capacitor array compensates the described cross coupling capacitor of direction lead of described touch-control input device, described first selector is selected described first coupled voltages that described direction lead exports and is exported the described first deviation compensation capacitor array to, and described second selector is selected described driving signal and exported the described first deviation compensation capacitor array to.
4. electronic installation comprises:
Touch-control input device;
Touch control sensing circuit is coupled to described touch-control input device; And
The capacitance deviation compensating circuit comprises:
First selector is selected one of first coupled voltages of described touch-control input device and second coupled voltages in response to the control signal of described touch control sensing circuit;
Second selector is selected one of described first coupled voltages and described second coupled voltages in response to described control signal;
The first deviation compensation capacitor array is coupled to described first selector and drives signal, adjusts the output equivalent capacitance in response to described control signal, to compensate the cross coupling capacitor of described touch-control input device; And
The second deviation compensation capacitor array is coupled to described second selector and reference voltage, adjusts the output equivalent capacitance in response to described control signal, to compensate the stray capacitance over the ground of described touch-control input device.
5. electronic installation comprises:
Touch-control input device;
Touch control sensing circuit is coupled to described touch-control input device; And
The capacitance deviation compensating circuit comprises:
The first deviation compensation capacitor array, be coupled to reference voltage in response to the control signal of described touch control sensing circuit and drive signal, be coupled to one of first coupled voltages of described touch-control input device and second coupled voltages in response to described control signal, adjust the output equivalent capacitance in response to described control signal, to utilize reference voltage to compensate the stray capacitance over the ground of described touch-control input device or to utilize the cross coupling capacitor that drives the described touch-control input device of signal compensation.
6. electronic installation according to claim 5, wherein, described capacitance deviation compensating circuit also comprises:
First selector, one of described first coupled voltages of conducting and described second coupled voltages are to the described first deviation compensation capacitor array in response to described control signal; And
Second selector, one of the described reference voltage of conducting and described driving signal are to the described first deviation compensation capacitor array in response to described control signal.
7. electronic installation according to claim 6, wherein, when the first deviation compensation capacitor array compensates the described stray capacitance over the ground of direction lead of described touch-control input device, described first coupled voltages that the described direction lead of described first selector conducting is exported is to the described first deviation compensation capacitor array, and the described reference voltage of described second selector conducting is to the described first deviation compensation capacitor array.
8. electronic installation according to claim 6, wherein, when the first deviation compensation capacitor array compensates the described cross coupling capacitor of direction lead of described touch-control input device, described first coupled voltages that the described direction lead of described first selector conducting is exported is to the described first deviation compensation capacitor array, and the described driving signal of described second selector conducting is to the described first deviation compensation capacitor array.
9. electronic installation according to claim 5, wherein,
The described first deviation compensation capacitor array is coupled to described driving signal, to compensate the described cross coupling capacitor of described touch-control input device;
Described capacitance deviation compensating circuit also comprises:
The second deviation compensation capacitor array is coupled to described reference voltage, to compensate the described stray capacitance over the ground of described touch-control input device;
First selector, one of described first coupled voltages of conducting and described second coupled voltages are to the described first deviation compensation capacitor array in response to described control signal; And
Second selector, one of the described reference voltage of conducting and described driving signal are to the described second deviation compensation capacitor array in response to described control signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133783 CN102193694B (en) | 2010-03-11 | 2010-03-11 | Electronic device for compensating capacitance tolerance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010133783 CN102193694B (en) | 2010-03-11 | 2010-03-11 | Electronic device for compensating capacitance tolerance |
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| CN102193694A CN102193694A (en) | 2011-09-21 |
| CN102193694B true CN102193694B (en) | 2013-08-14 |
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| CN 201010133783 Expired - Fee Related CN102193694B (en) | 2010-03-11 | 2010-03-11 | Electronic device for compensating capacitance tolerance |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102426503B (en) * | 2011-10-28 | 2014-05-07 | 台均科技（深圳）有限公司 | Sensor, dual-mode touch module and dual-mode touch electronic device |
| CN102693055B (en) * | 2012-05-02 | 2014-12-10 | 东莞市乐升电子有限公司 | Detection device and detection method of signal of projected capacitive touch screen |
| CN103150076B (en) * | 2013-03-28 | 2018-10-23 | 苏州瀚瑞微电子有限公司 | A method of realizing initial calibration of touch chip |
| JP5969127B2 (en) * | 2013-06-28 | 2016-08-17 | シャープ株式会社 | Touch panel controller and electronic device |
| KR102251059B1 (en) * | 2014-10-06 | 2021-05-13 | 삼성전자주식회사 | Touch Display Device Capable of Controlling Offset Capacitance Calibration with Multi-step |
| TWI646837B (en) * | 2017-09-14 | 2019-01-01 | 友達光電股份有限公司 | An anti-interference display panel and an anti-interference signal line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949160A (en) * | 2005-10-10 | 2007-04-18 | 义隆电子股份有限公司 | Induced quanity compensating method of touch controlling board inductor |
| CN101221479A (en) * | 2007-01-09 | 2008-07-16 | 义隆电子股份有限公司 | Detection compensating method of condenser type touch panel with key structure |
| CN101661356A (en) * | 2008-08-25 | 2010-03-03 | 盛群半导体股份有限公司 | Capacitance charge compensation method for touch induction device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009090534A2 (en) * | 2008-01-15 | 2009-07-23 | Lionel Portmann | Device for quantifying an electric unbalance and touch detection system incorporating it |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1949160A (en) * | 2005-10-10 | 2007-04-18 | 义隆电子股份有限公司 | Induced quanity compensating method of touch controlling board inductor |
| CN101221479A (en) * | 2007-01-09 | 2008-07-16 | 义隆电子股份有限公司 | Detection compensating method of condenser type touch panel with key structure |
| CN101661356A (en) * | 2008-08-25 | 2010-03-03 | 盛群半导体股份有限公司 | Capacitance charge compensation method for touch induction device |
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