CN105224152A - capacitive touch panel with proximity sensing function and scanning method thereof - Google Patents
capacitive touch panel with proximity sensing function and scanning method thereof Download PDFInfo
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- CN105224152A CN105224152A CN201410290117.8A CN201410290117A CN105224152A CN 105224152 A CN105224152 A CN 105224152A CN 201410290117 A CN201410290117 A CN 201410290117A CN 105224152 A CN105224152 A CN 105224152A
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Abstract
The invention relates to a capacitive touch panel with a proximity sensing function and a scanning method thereof, wherein the capacitive touch panel is provided with a touch operation area, a plurality of induction coils, a coil controller and a touch panel controller; the induction coils are arranged in the touch operation area at intervals and generate a third axis induction signal to the electromagnetic field change of the induction coils; the coil controller is electrically connected to each induction coil and the touch panel controller is electrically connected to the coil controller so as to judge the position of an induction object according to a third axis induction signal and scan the relative position of the induction coil in the touch operation area to determine the position of the induction object; therefore, the invention scans partial traces to determine the position, so that the scanning times in unit time can be increased to increase the scanning accuracy.
Description
Technical field
The present invention relates to a kind of scan method of capacitance type touch-control panel, particularly relate to and a kind of there is capacitance type touch-control panel close to inducing function and scan method thereof.
Background technology
The capacitance type touch-control panel of prior art is when utilizing a conduction or charged sense object to operate in the touch area of this capacitance type touch-control panel, makes touch area produce the change of capacitance, uses and judge the operating position of this conductive body at this contact panel.And in prior art, separately having a kind of electromagnetic touch-control panel, this electromagnetic touch-control panel needs collocation one time writer to use, and comprises multiple inductive coil, and the plurality of inductive coil is intensive and be distributed in the touch area of this contact panel uniformly.Inductive coil described in each can receive a drive singal and produce an electromagnetic field, and when this time writer close to time, the electromagnetic field that inductive coil described in each produces can change, by the change of this electromagnetic field, judge this time writer and the distance described in each between inductive coil, and find out the immediate inductive coil with this time writer, and judge the operating position of this time writer according to the relative position that this inductive coil is positioned at this touch area.
This electromagnetic touch-control panel judges the operating position of this time writer according to the relative position that the plurality of inductive coil is arranged in this touch area, for this reason, the closeness of touch-control precision directly with this many inductive coil of this employing electromagnetic touch-control panel is relevant, when the quantity of the plurality of inductive coil is more time, identify that the precision of position of touch just can be higher; In addition, the inductive coil of the electromagnetic touch-control panel of prior art adopts metal material, and metal material is light tight, after being usually arranged at a display module.For the contact panel of same size, when the quantity of the plurality of inductive coil is increasing time, the manufacture difficulty of the plurality of inductive coil can improve relatively, because the size of inductive coil described in each can be more and more less, and cost of manufacture also can improve relatively.For this reason, the touch-control module of electromagnetic touch-control panel, compared with capacitance type touch-control panel, can have thicker thickness.Therefore, the electromagnetic touch-control panel of prior art certainly will will do further improvement.
Summary of the invention
In order to solve described problem, fundamental purpose of the present invention is to provide a kind ofly has capacitance type touch-control panel close to inducing function and scan method thereof, to save cost of manufacture further and to reduce manufacture difficulty.
In order to reach described object, the technical way used makes this have to comprise a touch control operation district and multiple inductive coil close to this capacitance type touch-control panel in the scan method of the capacitance type touch-control panel of inducing function, the spaced spread configuration of the plurality of inductive coil is in the scope in this touch control operation district, and this scan method comprises:
Export a drive singal respectively to multiple inductive coil described in each;
Detect the electromagnetic field variable quantity of multiple inductive coil described in each, himself the electromagnetic field variable quantity corresponding of multiple inductive coil described in each produces a triaxial induction signal respectively;
The position of this sense object relative to this touch control operation district is judged according to the triaxial induction signal of inductive coil described in each.
Preferably, described triaxial induction signal is for judging that this sense object is at the two-dimensional position in this touch control operation district and the 3rd shaft position.
Preferably, describedly judge in the step of this sense object relative to the position in this touch control operation district according to the triaxial induction signal of inductive coil described in each, this sense object of this judgement comprises relative to the two-dimensional position in this touch control operation district:
Preset a critical value;
The triaxial induction signal that relatively described in each, inductive coil produces and this critical value, if this one of them triaxial induction signal exceedes this critical value, namely judge that this sense object is positioned at the scope of the inductive coil with the triaxial induction signal exceeding this critical value; And
The scope that this touch control operation district correspondence has the inductive coil of the triaxial induction signal exceeding this critical value is scanned, to obtain the two-dimensional position of this sense object.
Preferably, this touch control operation district of this capacitance type touch-control panel comprises multiple first axle and the second axis line, and the first axle and the second axis line of part are contained in the position of the scope described in each set by inductive coil in this touch control operation district; Wherein:
In the step that the described scope having the inductive coil of the triaxial induction signal exceeding this critical value to this touch control operation district correspondence scans, this part first axle that this inductive coil institute is contained and the second axis line carries out self-tolerant or mutual tolerance formula scans.
Preferably, describedly judge in the step of this sense object relative to the position in this touch control operation district according to the triaxial induction signal of inductive coil described in each, judge that this sense object comprises relative to the two-dimensional position in this touch control operation district:
Preset a critical value;
The triaxial induction signal that relatively described in each, inductive coil produces and this critical value, if this wherein two triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of two inductive coils with the two groups of triaxial induction signals exceeding this critical value; And
Scope between corresponding two inductive coils with the two groups of triaxial induction signals exceeding this critical value in this touch control operation district is scanned, to obtain the two-dimensional position of this sense object.
Preferably, this touch control operation district of this capacitance type touch-control panel comprises multiple first axle and the second axis line, the first axle and the second axis line of part are contained in the position of scope described in each set by inductive coil in this touch control operation district, and the scope between two positions of any two scopes set by adjacent inductive coil in this touch control operation district contains this part first axle wherein and the second axis line; Wherein:
In the step that scope between described two positions this touch control operation district correspondence to two inductive coils of the two groups of triaxial induction signals exceeding this critical value scans, self-tolerant or the scanning of mutual tolerance formula are carried out to this part first axle corresponding to the scope between two positions of the scope set by these two adjacent inductive coils in this touch control operation district and the second axis line.
Preferably, describedly judge in the step of this sense object relative to the position in this touch control operation district according to the triaxial induction signal of inductive coil described in each, judge that this sense object comprises relative to the two-dimensional position in this touch control operation district:
Preset a critical value;
The triaxial induction signal that relatively described in each, inductive coil produces and this critical value, if this wherein four triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of four inductive coils with the four groups of triaxial induction signals exceeding this critical value; And
The scope that corresponding four inductive coils with the four groups of triaxial induction signals exceeding this critical value in this touch control operation district have a common boundary jointly is scanned, to obtain the two-dimensional position of this sense object.
Preferably, this touch control operation district of this capacitance type touch-control panel comprises multiple first axle and the second axis line, the first axle and the second axis line of part are contained in the position of scope described in each set by inductive coil in this touch control operation district, and the scope that four positions of the scope set by wantonly four adjacent inductive coils in this touch control operation district have a common boundary jointly contains this part first axle wherein and the second axis line; Wherein:
In the step that the scope that described four positions having four inductive coils of the four groups of triaxial induction signals exceeding this critical value to this touch control operation district correspondence have a common boundary jointly scans, this part first axle corresponding to the scope of jointly have a common boundary to four positions of scope in this touch control operation district set by these four adjacent inductive coils and the second axis line carry out self-tolerant or the scanning of mutual tolerance formula.
Preferably, this triaxial induction signal is induced voltage or induction current.
And for reaching described object, the technology used in the present invention means make this capacitance type touch-control panel had close to inducing function comprise:
One touch control operation district;
Multiple inductive coil, it is spaced is arranged in this touch control operation district, and himself the electromagnetic field variable quantity corresponding of multiple inductive coil described in each produces a triaxial induction signal respectively;
One coil controllers, it is electrically connected to inductive coil described in each, and exports a drive singal respectively to multiple inductive coil described in each; And
One touching control panel controller, it is electrically connected to this coil controllers, and judges the position of this sense object relative to this touch control operation district according to the triaxial induction signal of inductive coil described in each.
Preferably, this touching control panel controller is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this one of them triaxial induction signal exceedes this critical value, namely judge that this sense object is positioned at the scope of the inductive coil with the triaxial induction signal exceeding this critical value, and the scope that this touch control operation district correspondence has the inductive coil of the triaxial induction signal exceeding this critical value is scanned, to obtain the position of this sense object relative to this touch control operation district.
Preferably, this touching control panel controller is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein two triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of two inductive coils with the two groups of triaxial induction signals exceeding this critical value, and the scope between corresponding two positions with two inductive coils of the two groups of triaxial induction signals exceeding this critical value, this touch control operation district is scanned, to obtain the position of this sense object relative to this touch control operation district.
Preferably, this touching control panel controller is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein four triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of four inductive coils with the four groups of triaxial induction signals exceeding this critical value, and the scope that four positions that this touch control operation district correspondence has four inductive coils of the four groups of triaxial induction signals exceeding this critical value have a common boundary jointly is scanned, to obtain the position of this sense object relative to this touch control operation district.
Preferably, this coil controllers is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this one of them triaxial induction signal exceedes this critical value, namely judge that this sense object is positioned at the scope of the inductive coil with the triaxial induction signal exceeding this critical value;
The scope that this touching control panel controller judges according to this coil controllers scans the scope that this touch control operation district correspondence has the inductive coil of the triaxial induction signal exceeding this critical value, to obtain the position of this sense object relative to this touch control operation district.
Preferably, this coil controllers is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein two triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of two inductive coils with the two groups of triaxial induction signals exceeding this critical value;
The scope that this touching control panel controller judges according to this coil controllers scans the scope between corresponding two positions with two inductive coils of the two groups of triaxial induction signals exceeding this critical value, this touch control operation district, to obtain the position of this sense object relative to this touch control operation district.
Preferably, this coil controllers is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein four triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of four inductive coils with the four groups of triaxial induction signals exceeding this critical value;
The scope that this touching control panel controller judges according to this coil controllers scans the scope that four positions that this touch control operation district correspondence has four inductive coils of the four groups of triaxial induction signals exceeding this critical value have a common boundary jointly, to obtain the position of this sense object relative to this touch control operation district.
Preferably, the capacitance type touch-control panel had described in close to inducing function comprises further:
One coil-induced layer, it is superimposed on this capacitive sensing layer side, and comprises the plurality of inductive coil, and is arranged in this touch control operation district;
This first axle and the second axis line of part are contained in the position of scope wherein described in each set by inductive coil in this touch control operation district, and this touching control panel controller carries out self-tolerant to this inductive coil this part first axle of containing of institute and the second axis line or mutual tolerance formula scans.
Preferably, the capacitance type touch-control panel had described in close to inducing function comprises further:
One coil-induced layer, it is superimposed on this capacitive sensing layer, and comprises the plurality of inductive coil, and is arranged in this touch control operation district;
The first axle and the second axis line of part are contained in the position of scope wherein described in each set by inductive coil in this touch control operation district, and the scope between two positions of any two scopes set by adjacent inductive coil in this touch control operation district contains this part first axle wherein and the second axis line, and this touching control panel controller carries out self-tolerant or the scanning of mutual tolerance formula to this part first axle corresponding to the scope between two positions of the scope set by these two adjacent inductive coils in this touch control operation district and the second axis line.
Preferably, the capacitance type touch-control panel had described in close to inducing function comprises further:
One coil-induced layer, it is superimposed on this capacitive sensing layer, and comprises the plurality of inductive coil, and is arranged in this touch control operation district;
The first axle and the second axis line of part are contained in the position of scope wherein described in each set by inductive coil in this touch control operation district, and the scope that four positions of the scope set by wantonly four adjacent inductive coils in this touch control operation district have a common boundary jointly contains the first axle and the second axis line of this part wherein, and the first axle of this part corresponding to scope that this touching control panel controller has a common boundary jointly to four positions of scope in this touch control operation district set by these four adjacent inductive coils and the second axis line carry out self-tolerant or the scanning of mutual tolerance formula.
Preferably, this capacitive sensing layer comprises further:
One first substrate, its side has the plurality of first axis line;
One second substrate, its side has the plurality of second axis line, and overlaps each other with this first substrate, but the second axis line of the first axis line of this first substrate and this second substrate is not in electrical contact mutually;
This coil-induced layer is formed at the side that this first substrate has the plurality of first axis line, and the spaced spread configuration of the plurality of inductive coil is in this first substrate, and inductive coil described in each and the first axis line confluce described in each are respectively equipped with an insulation course.
Preferably, this capacitive sensing layer comprises further:
One first substrate, its side has the plurality of first axis line;
One second substrate, its side has the plurality of second axis line, and overlaps each other with this first substrate, but the second axis line of the first axis line of this first substrate and this second substrate is not in electrical contact mutually;
This coil-induced layer comprises one the 3rd substrate, and the spaced spread configuration of the plurality of inductive coil is in the 3rd substrate, and the 3rd substrate and this second substrate overlap each other, but the inductive coil of the second axis line of this second substrate and the 3rd substrate is not in electrical contact mutually.
Preferably, this coil controllers and this touching control panel controller are integrated into a single IC for both.
Preferably, this triaxial induction signal is induced voltage or induction current.
The present invention has capacitance type touch-control panel close to inducing function mainly with capacitive sensing and function of electromagnetic induction, the specific region that this sense object is arranged in this touch control operation district is prejudged by the plurality of inductive coil, by this capacitance type touch-control panel, this specific region is scanned to determine that this sense object is positioned at the touch position in this touch control operation district again, so can reduce sweep limit and carry out the accelerated scan time, simultaneously because only scanning this specific region, when the palm of user's this sense object hand-held is touched when the region of this capacitance type touch-control panel and this specific region are not overlapping, the erroneous judgement that palm false touch causes can be avoided, and then improve sensing accuracy.
Accompanying drawing explanation
Fig. 1 is the function block diagram of capacitance type touch-control panel of the present invention.
Fig. 2 is the schematic top plan view of capacitance type touch-control panel first of the present invention preferred embodiment.
Fig. 3 is the perspective exploded view of capacitance type touch-control panel first of the present invention preferred embodiment.
Fig. 4 A is the sectional perspective schematic diagram of capacitance type touch-control panel first of the present invention preferred embodiment.
Fig. 4 B is the partial cutaway schematic of capacitance type touch-control panel first of the present invention preferred embodiment.
Fig. 5 is the perspective exploded view of capacitance type touch-control panel second of the present invention preferred embodiment.
Fig. 6 is the schematic top plan view of capacitance type touch-control panel of the present invention 3rd preferred embodiment.
Fig. 7 is the perspective exploded view of capacitance type touch-control panel of the present invention 3rd preferred embodiment.
Fig. 8 is the perspective exploded view of capacitance type touch-control panel of the present invention 4th preferred embodiment.
Fig. 9 is the process flow diagram of the scan method of capacitance type touch-control panel of the present invention.
Figure 10 is the process flow diagram of the judgement position step of the scan method of capacitance type touch-control panel of the present invention.
Symbol description:
10 capacitance type touch-control panels
11 touch control operation district 111 juncture areas
111a juncture area 111b juncture area
111c juncture area 111d juncture area
112 middle sections
121 inductive coil 122 insulation courses
123 the 3rd substrates
13 coil controllers
14 touching control panel controllers
151 first axis line 152 second axis lines
153 first substrate 154 second substrates.
Embodiment
Below coordinating accompanying drawing and present pre-ferred embodiments, setting forth the technological means that the present invention takes for realizing predetermined object further.
Refer to shown in Fig. 1 and Fig. 2, the capacitance type touch-control panel 10 that the present invention has close to inducing function comprises a touch control operation district 11, multiple inductive coil 121, coil controllers 13 and a touching control panel controller 14.
The plurality of inductive coil 121 is mutually distributed in distance and is arranged in this touch control operation district 11, and be electrically connected with this coil controllers 13, this coil controllers 13 exports a drive singal respectively to each inductive coil 121, each inductive coil 121 is generated an electromagnetic field, and inductive coil 121 described in each can himself electromagnetic field change generation one triaxial induction signal corresponding.Processed output after this coil controllers 13 receives this triaxial induction signal, also can judge that whether a sense object is close according to the triaxial induction signal of each inductive coil 121, in addition, also three shaft position of this sense object relative to this touch control operation district 11 can be calculated according to this triaxial induction signal further.Because this drive singal can be voltage signal or current signal, therefore namely the triaxial induction signal of this inductive coil can be voltage signal or current signal, wherein, 3rd axle refers to the axis perpendicular to this touch control operation district 11, for example, if this touch control operation district 11 is the regions formed with X-axis and Y-axis, the 3rd axle is Z axis.
This touching control panel controller 14 carries out full scan to this touch control operation district 11, to identify the two-dimensional position of this sense object, this touching control panel controller 14 is electrically connected to this coil controllers 13 again, can receive that this coil controllers 13 exports each described in inductive coil 121 triaxial induction signal after, the triaxial induction signal according to inductive coil described in each 121 judges the preliminary two-dimensional position of this sense object 121 relative to this touch control operation district 11.Meaning namely, this touching control panel controller 14 is preset with a critical value, and receive that this coil controllers 13 exports each described in inductive coil 121 triaxial induction signal after, the triaxial induction signal produced by inductive coil described in each 121 respectively and this critical value compare, if one of them triaxial induction signal exceedes this critical value, namely the scope that this sense object is positioned at this inductive coil 121 with the triaxial induction signal exceeding this critical value and contains is judged, this touching control panel controller 14 is just direct switches to part scanning sequence from the complete sequence of scanning.In part scanning sequence, this touching control panel controller 14 only scans the scope of the inductive coil 121 should with the triaxial induction signal exceeding this critical value in this touch control operation district 11, to obtain the two-dimensional position of this sense object fast.In addition, this touching control panel controller 14 also further according to this triaxial induction signal, can calculate three shaft position of this sense object relative to this touch control operation district 11.Again, this coil controllers 13 and this touching control panel controller 14 can be two independent controls, also can be integrated into the controller of single IC for both further, and this triaxial induction signal changes according to self electromagnetic field the induced voltage or induction current that produce for the plurality of inductive coil 121.
In other better enforcement profits, be preset with this critical value by this coil controllers 13, and judge whether the triaxial induction signal of inductive coil 121 described in each exceedes this critical value according to this, and the scope that the inductive coil 121 with the triaxial induction signal exceeding this critical value is contained is sent to this touching control panel controller 14.This touching control panel controller 14 just only scans the scope of the inductive coil 121 should with the triaxial induction signal exceeding this critical value in this touch control operation district 11, to obtain the two-dimensional position of this sense object fast.
This capacitance type touch-control panel 10 also comprises a coil-induced layer and a capacitive sensing layer.This touch control operation district 11 correspondence is positioned at the sensing range of this capacitive sensing floor, and this capacitive sensing layer comprises multiple first axis line 151 and multiple second axis line 152.This coil-induced floor is arranged in this touch control operation district 11, and is superimposed on this capacitive sensing layer, and comprises this many inductive coil 121.The first axis line 151 of part and the second axis line 152 of part are contained in the position of scope described in each set by inductive coil 121 in this touch control operation district 11, comprise 16 first axis lines, 151,9 second axis lines 152 and two inductive coils 121 with this capacitance type touch-control panel 10 shown in Fig. 2, wherein inductive coil 121 described in each contains 16 first axis lines 151 and 3 second axis lines 152.When the triaxial induction signal that one of them inductive coil 121 (left inductive coil) produces exceedes this critical value, this touching control panel controller 14 just direct this part first axis line 151 (X1 ~ X16) of containing the inductive coil 121 corresponding to this triaxial induction signal exceeding this critical value and this part second axis line 152 (Y1 ~ Y3) carries out self-tolerant or the scanning of mutual tolerance formula; Therefore, just two-dimensional position identification is carried out compared to the complete sequence of scanning whole first axle of scanning and the second axis line, only sweep test first axle and the second axis line 151,152, can obtain the two-dimensional position of the sense object being positioned at this upper left inductive coil 121 more quickly.
In this preferred embodiment, be a juncture area 111 between two positions of any two adjacent inductive coils 121.If this touching control panel controller 14 relatively and judge that the triaxial induction signal that wherein two adjacent inductive coils 121 produce exceedes this critical value, namely judge that this sense object is positioned at the scope of two adjacent inductive coils 121 with the two groups of triaxial induction signals exceeding this critical value, the i.e. juncture area 111 of these two adjacent inductive coils 121, and the part first axis the line 151 directly juncture area 111 in this touch control operation district 11 contained and part second axis line 152, namely X1 ~ the X16 in Fig. 2 and Y4 ~ Y6, scan, to obtain the two-dimensional position of this sense object.
Refer to shown in Fig. 3 and Fig. 4 A, 4B, the capacitive sensing layer of the first preferred embodiment of capacitance type touch-control panel 10 of the present invention comprises first substrate 153 and a second substrate 154 further.The side of this first substrate 153 is provided with the plurality of first axis line 151, and the side of this second substrate 154 is provided with the plurality of second axis line 152, and this second substrate 154 and this first substrate 153 overlap each other, but the first axis line 151 on this first substrate 153 is not in electrical contact mutually with the second axis line 152 on this second substrate 154.This coil-induced layer comprises two inductive coils 121 side by side, and is formed at the side that this first substrate 153 is provided with the plurality of first axis line 151.Inductive coil 121 described in each is superimposed with each other with the first axis line 151 of this different piece respectively, and inductive coil 121 is respectively equipped with an insulation course 122 with the first axis line 151 confluce described in each described in each, with this inductive coil 121 electrically isolated and this first axis line 151.In like manner, two inductive coils 121 of this coil-induced layer also can be formed at the side that this second substrate 154 is provided with the plurality of second axis line 152, inductive coil 121 described in each is superimposed with each other with the second axis line 152 of this different piece respectively, and this inductive coil 121 is respectively equipped with an insulation course 122 with this second axis line 152 confluce, with this inductive coil 121 electrically isolated and this second axis line 152.In addition, this inductive coil 121 also can be formed at the opposite side of first substrate 153, this inductive coil 121 is made to lay respectively at the relative both sides of this first substrate 153 with this first axis line 151, or be formed at the opposite side of second substrate 154, make this inductive coil 121 lay respectively at the relative both sides of this second substrate 154 with this second axis line 152.
Refer to shown in Fig. 5, the capacitive sensing layer of the second preferred embodiment of capacitance type touch-control panel 10 of the present invention, it comprises this first substrate 153 and this second substrate 154 equally, and the side of this first substrate 153 is provided with the plurality of first axis line 151, and the side of this second substrate 154 is provided with the plurality of second axis line 152.This second substrate 154 and this first substrate 153 overlap each other, but the first axis line 151 on this first substrate 153 is not in electrical contact mutually with the second axis line 152 on this second substrate 154.This coil-induced layer comprises one the 3rd substrate 123 and two inductive coils 121, inductive coil 121 described in each is that compartment of terrain spread configuration is in the side of the 3rd substrate 123 mutually, 3rd substrate 123 and this second substrate 154 overlap each other, but the second axis line 152 on this second substrate 154 is not in electrical contact mutually with the inductive coil 121 on the 3rd substrate 123.
Furthermore, refer to shown in Fig. 6 and Fig. 7, 3rd preferred embodiment of capacitance type touch-control panel 10 of the present invention, its capacitive sensing layer is identical with the first preferred embodiment, but this coil-induced layer comprises four inductive coils 121, and be formed at the side that this first substrate 153 is provided with this many first axis line 151, inductive coil 121 described in each is superimposed with each other with the first axis line 151 of this different piece respectively, and the arrangement in matrix, and each inductive coil 121 is folded with an insulation course 122 (as shown in Figure 4) respectively with each first axis line 151 confluce, with this inductive coil 121 isolated and this first axis line 151.
In this preferred embodiment, the common intersection of four positions of any four adjacent inductive coils 121 is middle sections 112, and be this juncture area between two positions of wherein any two adjacent inductive coils 121, comprise four juncture areas 111a, 111b, 111c, 111d altogether.If this touching control panel controller 14 relatively and judge that the triaxial induction signal that wherein two adjacent inductive coils 121 produce exceedes this critical value, namely judge that this sense object is positioned at the scope of two adjacent inductive coils 121 with the two groups of triaxial induction signals exceeding this critical value, the i.e. juncture area of these two adjacent inductive coils 121, and the part first axis the line 151 directly juncture area in this touch control operation district 11 contained and part second axis line 152.For example, if sense object is near the inductive coil 121 of upper left and upper right, the triaxial induction signal that then inductive coil 121 of this upper left and upper right produces can exceed this critical value, namely the juncture area 111a of this sense object near the inductive coil 121 of this upper left and upper right is judged, and the part first axis line 151 directly contained the juncture area 111a in this touch control operation district 11 and part second axis line 152 scan, namely X1 ~ the X7 in Fig. 6 and Y4 ~ Y6, to obtain the two-dimensional position of this sense object.If this touching control panel controller 14 relatively and judge that the triaxial induction signal that these four adjacent inductive coils 121 produce exceedes this critical value, namely judge that this sense object is positioned at the scope of the four adjacent inductive coils 121 with the four groups of triaxial induction signals exceeding this critical value, the i.e. middle section 112 of these four adjacent inductive coils 121, and the part first axis line 151 directly contained the middle section 112 in this touch control operation district 11 and part second axis line 152 scan, namely X8 ~ the X9 in Fig. 6 and Y4 ~ Y6, to obtain the two-dimensional position of this sense object.
Refer to shown in Fig. 8,4th preferred embodiment of capacitance type touch-control panel 10 of the present invention, its capacitive sensing layer is identical with the second preferred embodiment, and this coil-induced layer is also identical roughly the same with the second preferred embodiment, but comprise four inductive coils 121, these four inductive coils 121 are that matrix spread configuration is in the side of the 3rd substrate 123 spaced reciprocally, 3rd substrate 123 and this second substrate 154 overlap each other, but the second axis line 152 on this second substrate 154 is not in electrical contact mutually with the inductive coil 121 on the 3rd substrate 123.
By this touching control panel controller 14, the present invention judges whether the triaxial induction signal that inductive coil 121 described in each produces exceedes this critical value, when arbitrary triaxial induction signal exceedes this critical value, namely judge that this sense object is close, and the position be positioned at according to this inductive coil 121 exceeding the triaxial induction signal of critical value of generation in this touch control operation district 11, direct scanning its part first axis line 151 contained and part second axis line 152, to reduce the number of traces needing scanning, just can in more times number of same time interscan, improve the induction accuracy of this capacitance type touch-control panel 10.Furthermore, the inductive coil 121 also exceeding the triaxial induction signal of this critical value by this generation is positioned at the position in this touch control operation district 11, confirm the position of this sense object, and get rid of other this sense objects non-and contact this touch control operation district 11 by directly scanning corresponding part first axis line 151 and part second axis line 152 and produce erroneous judgement situation.For example, when the hand-held time writer of user, this time writer is this sense object, but user is when this time writer hand-held operates in the touch control operation district 11 of this capacitance type touch-control panel 10, the easy false touch of palm portion causes the erroneous judgement of this capacitance type touch-control panel 10 to this touch control operation district 11.By the present invention's direct sweep test first axis line 151 and part second axis line 152, when palm and this time writer are positioned at the position corresponding to different inductive coil 121, first axis line 151 of palm touch position and the second axis line 152 can not be scanned, and can avoid the situation having erroneous judgement sense object position because of palm touching completely.Therefore the present invention really effectively can reduce the generation of erroneous judgement situation.
In sum, refer to shown in Fig. 9, the scan method that the present invention has close to the capacitance type touch-control panel of inducing function comprises the following steps:
Drive singal (S11) is applied respectively to the multiple inductive coils be located in touch control operation district, makes inductive coil described in each produce an electromagnetic field; After the electromagnetic field of inductive coil is set up, whether the electromagnetic field detecting inductive coil described in each changes, when electromagnetic field changes, detect the electromagnetic field variable quantity (S12) of inductive coil described in each, wherein, inductive coil described in each is understood corresponding electromagnetic field variable quantity own and produces a triaxial induction signal; After receiving each triaxial induction signal, analyze this triaxial induction signal and judge the positional information (S13) of sense object relative to touch control operation district, the details for step S13 further illustrates as follows.
Refer to shown in Figure 10, describedly judge that this sense object is relative in the step of the two-dimensional position in this touch control operation district and the 3rd shaft position (S13) according to the triaxial induction signal of inductive coil described in each, this sense object of this judgement comprises the following steps relative to the two-dimensional position in this touch control operation district:
Preset a critical value (S131);
The triaxial induction signal that relatively described in each, inductive coil produces and this critical value (S132), if this one of them triaxial induction signal exceedes this critical value, namely judge that this sense object is positioned at the scope (S133) of the inductive coil with the triaxial induction signal exceeding this critical value; The scope that this touch control operation district correspondence has the inductive coil of the triaxial induction signal exceeding this critical value is scanned, to obtain the two-dimensional position (S134) of this sense object;
If this wherein two triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope (S135) of two inductive coils with the two groups of triaxial induction signals exceeding this critical value; Scope between corresponding two positions with two inductive coils of the two groups of triaxial induction signals exceeding this critical value, this touch control operation district is scanned, to obtain the two-dimensional position (S136) of this sense object;
If this wherein four triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope (S137) of four inductive coils with the four groups of triaxial induction signals exceeding this critical value; The scope that corresponding four positions with four inductive coils of the four groups of triaxial induction signals exceeding this critical value, this touch control operation district have a common boundary jointly is scanned, to obtain the two-dimensional position (S138) of this sense object.
According to the triaxial induction signal that the plurality of inductive coil 121 produces, scan method of the present invention judges that this sense object is relative to the two-dimensional position in touch control operation district 11 and the 3rd shaft position, and exceed according to this triaxial induction signal the scope whether this critical value compare and judge this sense object place further, when the triaxial induction signal of inductive coil 121 correspondence exceedes this critical value, namely judge that this sense object is positioned at the covering scope that this generation exceedes the inductive coil 121 of the triaxial induction signal of critical value, and for part first axle corresponding in this covering scope and the second axis line 151, 152 scannings obtain the two-dimensional position of sense object.When the triaxial induction signal of two inductive coil 121 correspondences exceedes this critical value, namely judge that this sense object exceedes in this generation between the covering scope of two inductive coils 121 of two groups of triaxial induction signals of critical value, and obtain the two-dimensional position of sense object for part first axle corresponding between these two covering scopes and the scanning of the second axis line 151,152.When the triaxial induction signal that four inductive coils are corresponding exceedes this critical value, namely judge the common boundary that this sense object is positioned at this generation and exceedes the covering scope of four inductive coils of four groups of triaxial induction signals of critical value, and obtain the two-dimensional position of sense object for part first axle of the common boundary correspondence of these four covering scopes and the second axis line sweep.
For this reason, The present invention reduces the first axis line 151 and the second axis line 152 needing scanning, so that the two-dimensional position that more scanning judges this sense object can be performed within the same units time, improve the sensitivity of capacitance type touch-control panel 10 of the present invention.Furthermore, the present invention only scans for the first axle partly and the second axis line 151,152, and the first axle of this part and the second axis line 151,152 exceed selected by the triaxial induction signal of this critical value according to this, directly scan the first axle near this sense object and the second axis line 151,152; Therefore, erroneous judgement when the present invention can reduce the false touch of non-inductive object really.Furthermore, the quantity of the present invention also by increasing this inductive coil 121 reduces the quantity performing the trace scanned required for part scanning sequence, and the scope that the position reducing inductive coil 121 described in each is contained, and synchronously can reduce the covering scope of this juncture area 111 and this middle section 112, further increase scanning precision of the present invention.And after reducing the scope of part scanning, the possibility that palm and sense object are positioned at same sweep limit is just lower, with the ability of further reinforced platoon except erroneous judgement during palm false touch simultaneously.
The above is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention preferred embodiment discloses as above, but and be not used to limit the present invention, have in any art and usually know the knowledgeable, not departing from the scope of technical solution of the present invention, make a little change when the technology contents of described announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (23)
1. one kind has the scan method of the capacitance type touch-control panel close to inducing function, wherein this capacitance type touch-control panel comprises a touch control operation district and multiple inductive coil, the spread configuration that wherein multiple inductive coil is spaced is in the scope in this touch control operation district, and this scan method comprises:
Export a drive singal respectively to multiple inductive coil described in each;
Detect the electromagnetic field variable quantity of multiple inductive coil described in each and produce a triaxial induction signal respectively;
The position of this sense object relative to this touch control operation district is judged according to the triaxial induction signal of inductive coil described in each.
2. the scan method with capacitance type touch-control panel close to inducing function according to claim 1, wherein said triaxial induction signal is for judging that this sense object is at the two-dimensional position in this touch control operation district and the 3rd shaft position.
3. the scan method with capacitance type touch-control panel close to inducing function according to claim 2, wherein saidly judge in the step of this sense object relative to the position in this touch control operation district according to the triaxial induction signal of inductive coil described in each, judge that this sense object comprises relative to the two-dimensional position in this touch control operation district:
Preset a critical value;
The triaxial induction signal that relatively described in each, inductive coil produces and this critical value, if this one of them triaxial induction signal exceedes this critical value, namely judge that this sense object is positioned at the scope of the inductive coil with the triaxial induction signal exceeding this critical value; And
The scope that this touch control operation district correspondence has the inductive coil of the triaxial induction signal exceeding this critical value is scanned, to obtain the two-dimensional position of this sense object.
4. the scan method with capacitance type touch-control panel close to inducing function according to claim 3, wherein this touch control operation district of this capacitance type touch-control panel comprises multiple first axle and the second axis line, and the first axle and the second axis line of part are contained in the position of the scope described in each set by inductive coil in this touch control operation district; Wherein:
In the step that the described scope having the inductive coil of the triaxial induction signal exceeding this critical value to this touch control operation district correspondence scans, this part first axle that this inductive coil institute is contained and the second axis line carries out self-tolerant or mutual tolerance formula scans.
5. the scan method with capacitance type touch-control panel close to inducing function according to claim 2, wherein saidly judge in the step of this sense object relative to the position in this touch control operation district according to the triaxial induction signal of inductive coil described in each, judge that this sense object comprises relative to the two-dimensional position in this touch control operation district:
Preset a critical value;
The triaxial induction signal that relatively described in each, inductive coil produces and this critical value, if this wherein two triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of two inductive coils with the two groups of triaxial induction signals exceeding this critical value; And
Scope between corresponding two inductive coils with the two groups of triaxial induction signals exceeding this critical value in this touch control operation district is scanned, to obtain the two-dimensional position of this sense object.
6. the scan method with capacitance type touch-control panel close to inducing function according to claim 5, wherein this touch control operation district of this capacitance type touch-control panel comprises multiple first axle and the second axis line, the first axle and the second axis line of part are contained in the position of scope described in each set by inductive coil in this touch control operation district, and the scope between two positions of any two scopes set by adjacent inductive coil in this touch control operation district contains this part first axle wherein and the second axis line; Wherein:
In the step that scope between described two positions this touch control operation district correspondence to two inductive coils of the two groups of triaxial induction signals exceeding this critical value scans, self-tolerant or the scanning of mutual tolerance formula are carried out to this part first axle corresponding to the scope between two positions of the scope set by these two adjacent inductive coils in this touch control operation district and the second axis line.
7. the scan method with capacitance type touch-control panel close to inducing function according to claim 2, wherein saidly judge in the step of this sense object relative to the position in this touch control operation district according to the triaxial induction signal of inductive coil described in each, judge that this sense object comprises relative to the two-dimensional position in this touch control operation district:
Preset a critical value;
The triaxial induction signal that relatively described in each, inductive coil produces and this critical value, if this wherein four triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of four inductive coils with the four groups of triaxial induction signals exceeding this critical value; And
The scope that corresponding four inductive coils with the four groups of triaxial induction signals exceeding this critical value in this touch control operation district have a common boundary jointly is scanned, to obtain the two-dimensional position of this sense object.
8. the scan method with capacitance type touch-control panel close to inducing function according to claim 7, wherein this touch control operation district of this capacitance type touch-control panel comprises multiple first axle and the second axis line, the first axle and the second axis line of part are contained in the position of scope described in each set by inductive coil in this touch control operation district, and the scope that four positions of the scope set by wantonly four adjacent inductive coils in this touch control operation district have a common boundary jointly contains this part first axle wherein and the second axis line; Wherein:
In the step that the scope that described four positions having four inductive coils of the four groups of triaxial induction signals exceeding this critical value to this touch control operation district correspondence have a common boundary jointly scans, this part first axle corresponding to the scope of jointly have a common boundary to four positions of scope in this touch control operation district set by these four adjacent inductive coils and the second axis line carry out self-tolerant or the scanning of mutual tolerance formula.
9. the scan method with capacitance type touch-control panel close to inducing function according to any one of claim 1 to 8, wherein this triaxial induction signal is induced voltage or induction current.
10. have the capacitance type touch-control panel close to inducing function, it comprises:
One capacitive sensing layer, it comprises multiple first axis line and the second axis line, forms a touch control operation district in a sensing range of this capacitive sensing floor;
Multiple inductive coil, in this touch control operation district of its spaced spread configuration, and himself the electromagnetic field variable quantity corresponding of multiple inductive coil described in each produces a triaxial induction signal respectively;
One coil controllers, it is electrically connected to inductive coil described in each, and exports a drive singal respectively to multiple inductive coil described in each; And
One touching control panel controller, it is electrically connected to this coil controllers, and judges the position of this sense object relative to this touch control operation district according to the triaxial induction signal of inductive coil described in each.
11. capacitance type touch-control panels had close to inducing function according to claim 10, wherein:
This touching control panel controller is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this one of them triaxial induction signal exceedes this critical value, namely judge that this sense object is positioned at the scope of the inductive coil with the triaxial induction signal exceeding this critical value, and the scope that this touch control operation district correspondence has the inductive coil of the triaxial induction signal exceeding this critical value is scanned, to obtain the position of this sense object relative to this touch control operation district.
12. capacitance type touch-control panels had close to inducing function according to claim 10, wherein:
This touching control panel controller is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein two triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of two inductive coils with the two groups of triaxial induction signals exceeding this critical value, and the scope between corresponding two positions with two inductive coils of the two groups of triaxial induction signals exceeding this critical value, this touch control operation district is scanned, to obtain the position of this sense object relative to this touch control operation district.
13. capacitance type touch-control panels had close to inducing function according to claim 10, wherein:
This touching control panel controller is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein four triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of four inductive coils with the four groups of triaxial induction signals exceeding this critical value, and the scope that four positions that this touch control operation district correspondence has four inductive coils of the four groups of triaxial induction signals exceeding this critical value have a common boundary jointly is scanned, to obtain the position of this sense object relative to this touch control operation district.
14. capacitance type touch-control panels had close to inducing function according to claim 10, wherein:
This coil controllers is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this one of them triaxial induction signal exceedes this critical value, namely judge that this sense object is positioned at the scope of the inductive coil with the triaxial induction signal exceeding this critical value;
The scope that this touching control panel controller judges according to this coil controllers scans the scope that this touch control operation district correspondence has the inductive coil of the triaxial induction signal exceeding this critical value, to obtain the position of this sense object relative to this touch control operation district.
15. capacitance type touch-control panels had close to inducing function according to claim 10, wherein:
This coil controllers is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein two triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of two inductive coils with the two groups of triaxial induction signals exceeding this critical value;
The scope that this touching control panel controller judges according to this coil controllers scans the scope between corresponding two positions with two inductive coils of the two groups of triaxial induction signals exceeding this critical value, this touch control operation district, to obtain the position of this sense object relative to this touch control operation district.
16. capacitance type touch-control panels had close to inducing function according to claim 10, wherein:
This coil controllers is preset with a critical value, and compare triaxial induction signal and this critical value of inductive coil generation described in each, if this wherein four triaxial induction signals exceed this critical value, namely judge that this sense object is positioned at the scope of four inductive coils with the four groups of triaxial induction signals exceeding this critical value;
The scope that this touching control panel controller judges according to this coil controllers scans the scope that four positions that this touch control operation district correspondence has four inductive coils of the four groups of triaxial induction signals exceeding this critical value have a common boundary jointly, to obtain the position of this sense object relative to this touch control operation district.
17. capacitance type touch-control panels had close to inducing function according to claim 11, it comprises further:
One coil-induced layer, it is superimposed on this capacitive sensing layer side, and comprises the plurality of inductive coil, and is arranged in this touch control operation district;
This first axle and the second axis line of part are contained in the position of scope wherein described in each set by inductive coil in this touch control operation district, and this touching control panel controller carries out self-tolerant to this inductive coil this part first axle of containing of institute and the second axis line or mutual tolerance formula scans.
18. capacitance type touch-control panels had close to inducing function according to claim 12, it comprises further:
One coil-induced layer, it is superimposed on this capacitive sensing layer, and comprises the plurality of inductive coil, and is arranged in this touch control operation district;
The first axle and the second axis line of part are contained in the position of scope wherein described in each set by inductive coil in this touch control operation district, and the scope between two positions of any two scopes set by adjacent inductive coil in this touch control operation district contains this part first axle wherein and the second axis line, and this touching control panel controller carries out self-tolerant or the scanning of mutual tolerance formula to this part first axle corresponding to the scope between two positions of the scope set by these two adjacent inductive coils in this touch control operation district and the second axis line.
19. capacitance type touch-control panels had close to inducing function according to claim 13, it comprises further:
One coil-induced layer, it is superimposed on this capacitive sensing layer, and comprises the plurality of inductive coil, and is arranged in this touch control operation district;
The first axle and the second axis line of part are contained in the position of scope wherein described in each set by inductive coil in this touch control operation district, and the scope that four positions of the scope set by wantonly four adjacent inductive coils in this touch control operation district have a common boundary jointly contains the first axle and the second axis line of this part wherein, and the first axle of this part corresponding to scope that this touching control panel controller has a common boundary jointly to four positions of scope in this touch control operation district set by these four adjacent inductive coils and the second axis line carry out self-tolerant or the scanning of mutual tolerance formula.
20. according to claim 17 to the capacitance type touch-control panel had close to inducing function according to any one of 19, wherein:
This capacitive sensing layer comprises further:
One first substrate, its side has the plurality of first axis line;
One second substrate, its side has the plurality of second axis line, and overlaps each other with this first substrate, but the second axis line of the first axis line of this first substrate and this second substrate is not in electrical contact mutually;
This coil-induced layer is formed at the side that this first substrate has the plurality of first axis line, and the spaced spread configuration of the plurality of inductive coil is in this first substrate, and inductive coil described in each and the first axis line confluce described in each are respectively equipped with an insulation course.
21. according to claim 17 to the capacitance type touch-control panel had close to inducing function according to any one of 19, wherein:
This capacitive sensing layer comprises further:
One first substrate, its side has the plurality of first axis line;
One second substrate, its side has the plurality of second axis line, and overlaps each other with this first substrate, but the second axis line of the first axis line of this first substrate and this second substrate is not in electrical contact mutually;
This coil-induced layer comprises one the 3rd substrate, and the spaced spread configuration of the plurality of inductive coil is in the 3rd substrate, and the 3rd substrate and this second substrate overlap each other, but the inductive coil of the second axis line of this second substrate and the 3rd substrate is not in electrical contact mutually.
22. according to claim 10 to the capacitance type touch-control panel had close to inducing function according to any one of 19, and wherein this coil controllers and this touching control panel controller are integrated into a single IC for both.
23. according to claim 10 to the capacitance type touch-control panel had close to inducing function according to any one of 19, and wherein this triaxial induction signal is induced voltage or induction current.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW103119958 | 2014-06-09 | ||
| TW103119958A TWI544391B (en) | 2014-06-09 | 2014-06-09 | Capacitive touch panel having approaching sensing function and scan method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN105224152A true CN105224152A (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410290117.8A Pending CN105224152A (en) | 2014-06-09 | 2014-06-25 | capacitive touch panel with proximity sensing function and scanning method thereof |
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| CN (1) | CN105224152A (en) |
| TW (1) | TWI544391B (en) |
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| CN105786290A (en) * | 2016-04-28 | 2016-07-20 | 京东方科技集团股份有限公司 | Touch sensing device, touch panel, display panel and display device |
| CN106850919A (en) * | 2016-12-30 | 2017-06-13 | 努比亚技术有限公司 | A kind of control method and mobile terminal |
| CN109388286A (en) * | 2018-09-26 | 2019-02-26 | Oppo广东移动通信有限公司 | Proximity state judgment method and device |
| CN111240499A (en) * | 2020-01-02 | 2020-06-05 | 深圳市千分一智能技术有限公司 | Micro pressure detection method of active pen and active pen |
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| CN101194221A (en) * | 2005-06-08 | 2008-06-04 | 3M创新有限公司 | Touch location determination involving multiple touch location processes |
| US20130057505A1 (en) * | 2011-09-06 | 2013-03-07 | Uc-Logic Technology Corp. | Electromagnetic inductive input apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105786290A (en) * | 2016-04-28 | 2016-07-20 | 京东方科技集团股份有限公司 | Touch sensing device, touch panel, display panel and display device |
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| CN109388286A (en) * | 2018-09-26 | 2019-02-26 | Oppo广东移动通信有限公司 | Proximity state judgment method and device |
| CN109388286B (en) * | 2018-09-26 | 2022-03-22 | Oppo广东移动通信有限公司 | Proximity state judgment method and device |
| CN111240499A (en) * | 2020-01-02 | 2020-06-05 | 深圳市千分一智能技术有限公司 | Micro pressure detection method of active pen and active pen |
| CN111240499B (en) * | 2020-01-02 | 2023-07-28 | 深圳市千分一智能技术有限公司 | Micro pressure detection method of active pen and active pen |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201546690A (en) | 2015-12-16 |
| TWI544391B (en) | 2016-08-01 |
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