CN103218096A - Touch detection method for bendable projected capacitive touch panel - Google Patents
Touch detection method for bendable projected capacitive touch panel Download PDFInfo
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- CN103218096A CN103218096A CN 201310100994 CN201310100994A CN103218096A CN 103218096 A CN103218096 A CN 103218096A CN 201310100994 CN201310100994 CN 201310100994 CN 201310100994 A CN201310100994 A CN 201310100994A CN 103218096 A CN103218096 A CN 103218096A
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Abstract
The invention provides a touch detection method for a bendable projected capacitive touch panel. The touch detection method comprises the following steps of: pressing or bending a projected capacitive touch panel; detecting the capacitance change values of the projected capacitive touch panel; converting the capacitance change values into a touch input signal; and outputting a corresponding control signal according to the touch input signal. Compared with the prior art, the type of a control command can be determined by the method according to the punctate change and/or the linear change of the capacitance change values of the panel, and the movement speed, the scaling and the current working mode of a window can be controlled respectively according to the bending angle, the bending area, the bending state or the flattening state of the panel by the method.
Description
Technical field
The present invention relates to a kind of projected capacitive touch panel, relate in particular to a kind of touch control detecting method of flexible projected capacitive touch panel.
Background technology
Current, the projected capacitive touch technology is broadly divided into line induction (wire sensing) mode and grid induction (grid sensing) mode.With the line induction mode is example, and wire sensing is clipped in lametta between the glass plate (or plastic film), becomes touch sensor.The diameter of this metal wire is about tens microns, is arranged in complicated patterns, even across the glass of 20 millimeters thick, also can detect the signal of X-direction and Y direction.With the grid induction mode is example, grid sensing with the nesa coating that is arranged in lattice-shaped as touch sensor, ITO(tin indium oxide for example) film.In the prior art, most of panel vendors adopt nesa coating as touch sensor.
The principle of projected capacitive touch panel is to be, because of contacting the capacitive sensing that forms, sees through after the computing of control chip between the ito transparent electrode that utilizes contact panel and human finger or conductive body, and being converted to can be for the coordinate data of operating system interpretation.In the structure of projected capacitive touch panel, the configurable individual layer or double-deck ITO electrode, be connected in series arrangement with X-axis, the staggered mode of Y-axis, and the outside of these ITO electrodes (promptly, around the contact panel), there is metal (or ITO) lead that the ITO electrode of each bar X-axis line, Y-axis line is electrically connected to the induction channels of control chip respectively.When contacting without any conductive body, a fixing coupling capacitance all can be arranged between each ITO electrode, electric field (line of electric force) between ITO electrode and the electrode distributes and fixes at this moment, and control chip can record in the chip through the total capacitance value of each induction channels with the ITO electrode on every X-axis line, the Y-axis line.When the finger of human body contacts this panel,, between the ITO electrode on the contact panel and finger, be equivalent to and formed a new electric capacity (can be described as and point electric capacity) because people's skin is can conduction.Meanwhile, the original electric field (line of electric force) of stationary distribution between each ITO electrode just can be connected to finger skin and change, thereby change the X-axis line of contact panel and the total capacitance value of Y-axis line because of the part line of electric force.Variation according to the total capacitance value before and after the contact just can identify concrete contact position.At this, because the distribution of electric field (line of electric force) is the projection shape, thereby also can be called projecting type capacitor with the inductance capacitance between finger and the ITO electrode, and the contact panel that will have this structure is called projected capacitive touch panel.
Yet, in the prior art, framework is mainly controlled by mechanical key, acoustic control, touch-control or sensing mode in the human-computer interaction interface of non-flexible display (non-flexible display), and can't be adapted to the flexible projected capacitive touch panel in above-mentioned these control modes.In view of this, how to design a kind of touch control detecting method of flexible projected capacitive touch panel, make it be applied to flexible display more intuitively, user operation is more convenient, is a problem needing to be resolved hurrily of person skilled in the industry.
Summary of the invention
At the existing above-mentioned defective of projected capacitive touch panel of the prior art, the invention provides a kind of touch control detecting method of flexible projected capacitive touch panel.
According to one aspect of the present invention, a kind of touch control detecting method of flexible projected capacitive touch panel is provided, it is characterized in that this touch control detecting method may further comprise the steps:
Push or deflection one projected capacitive touch panel;
Detect the capacitance variations value of described projected capacitive touch panel;
Described capacitance variations value is converted to a touch-control input signal; And
According to described touch-control input signal, the output control signal corresponding.
Preferably, when this capacitance variations value presented the point-like variation, described control signal was touch-control instruction.
Preferably, when this capacitance variations value presented the wire variation, described control signal was deflection instruction.
Preferably, when this capacitance variations value presented point-like variation and wire variation simultaneously, described control signal was the mixed signal of touch-control instruction and deflection instruction.
Among the embodiment therein, this capacitance variations value is the variable quantity of the total capacitance value after the described projected capacitive touch panel deflection.
Among the embodiment therein, this capacitance variations value is the variable quantity of the electric capacity self-induction value after the described projected capacitive touch panel deflection.
Among the embodiment therein, this capacitance variations value is the variable quantity of the electric capacity mutual inductance value after the described projected capacitive touch panel deflection.
Preferably, this touch control detecting method also comprises: described control signal is adjusted the translational speed of form according to the angle of deflection of described projected capacitive touch panel.
Preferably, this touch control detecting method also comprises: described control signal is adjusted the scaling of form according to the deflection area of described projected capacitive touch panel.
Preferably, this touch control detecting method also comprises: described control signal is controlled the mode of operation of described contact panel according to the deflected of described projected capacitive touch panel or the state that shakeouts.
Adopt the touch control detecting method of flexible projected capacitive touch panel of the present invention, at first push or this contact panel of deflection, detect the capacitance variations value of this panel, then this capacitance variations value is converted to a touch-control input signal, and output and the corresponding control signal of this touch-control input signal.Than prior art, touch control detecting method of the present invention can present that point-like changes according to the capacitance variations value of panel and/or wire changes to determine the type of steering order, also can control the translational speed of form, scaling and work at present pattern respectively according to angle of deflection, deflection area, the deflected of panel or the state that shakeouts.
Description of drawings
The reader will become apparent various aspects of the present invention after the reference accompanying drawing has been read the specific embodiment of the present invention.Wherein,
Fig. 1 illustrates the transparency electrode of projected capacitive touch panel and arranges synoptic diagram;
Capacitance variation synoptic diagram when Fig. 2 illustrates projected capacitive touch panel by touch-control;
Fig. 3 illustrates the process flow diagram according to the touch control detecting method of the flexible projected capacitive touch panel of one embodiment of the present invention;
Fig. 4 illustrates in the touch control detecting method of Fig. 3, and contact panel adopts the synoptic diagram of the variable quantity of electric capacity self-induction value as the touch-control input signal during by deflection;
Fig. 5 (a) illustrates in the touch control detecting method of Fig. 3, adopts the synoptic diagram of the variable quantity of electric capacity mutual inductance value as the touch-control input signal when contact panel is touched;
Fig. 5 (b) illustrates in the touch control detecting method of Fig. 3, and contact panel adopts the synoptic diagram of the variable quantity of electric capacity mutual inductance value as the touch-control input signal during by deflection; And
Fig. 6 illustrates a specific embodiment of the touch control detecting method shown in Fig. 5 (b).
Embodiment
For technology contents that the application is disclosed is more detailed and complete, can be with reference to accompanying drawing and following various specific embodiments of the present invention, identical mark is represented same or analogous assembly in the accompanying drawing.Yet the embodiment that those of ordinary skill in the art should be appreciated that hereinafter to be provided is used for limiting the scope that the present invention is contained.In addition, accompanying drawing only is used for schematically being illustrated, and does not draw according to its life size.
With reference to the accompanying drawings, the embodiment to various aspects of the present invention is described in further detail.Fig. 1 illustrates the transparency electrode of projected capacitive touch panel and arranges synoptic diagram, and the capacitance variation synoptic diagram of Fig. 2 when projected capacitive touch panel is shown by touch-control.
With reference to Fig. 1, this projected capacitive touch panel comprises a plurality of horizontal transparency electrode H1 and the transparency electrode V1 and the V2 of H2 and a plurality of vertical arrangements.Wherein, transparency electrode H1 and H2 electrically connect by a plain conductor or a transparency electrode, and transparency electrode V1 and V2 electrically connect by a transparency electrode.For example, transparency electrode H1, H2, V1 and V2 adopt the ITO(tin indium oxide) material makes.In addition, there is a stray capacitance Cm between adjacent transparency electrode, for example, between electrode H1 and the electrode V1, between electrode V1 and the electrode H2, between electrode H2 and the electrode V2, between electrode V2 and the motor H1.
As previously mentioned, the outside of transparency electrode H1, V2, H2, V1 has plain conductor the electrode of horizontal direction and vertical direction to be electrically connected to the induction channels of control chip respectively.When contacting without any conductive body, a fixing stray capacitance Cm all can be arranged between each electrode, electric field (line of electric force) between electrode and the electrode distributes and fixes at this moment, and control chip can see through each induction channels the total capacitance value of the ITO electrode of horizontal direction and vertical direction is noted.In case conductor object touch panel, the total capacitance value from induction channels that control chip received can change, and can determine concrete touch position by the variation of this total capacitance value.
With reference to Fig. 2, when such as the conductive body touch panel of human finger, between ITO electrode 100 on contact panel and the finger (corresponding to the position of touch among the figure), be equivalent to and formed a new electric capacity.In addition, also there is a coupling capacitance C1 between the adjacent ITO electrode.Thus, originally the electric field (line of electric force) of stationary distribution between the ITO electrode just can be connected to finger skin and change because of the part line of electric force, and then changed the capacitance of contact panel.For example, when single finger or single-point contact, have an X-axis line and a Y-axis line generation capacitance variation simultaneously, the coordinate common factor that therefore just can see through X-axis and Y-axis be obtained concrete touch-control coordinate position.
Fig. 3 illustrates the process flow diagram according to the touch control detecting method of the flexible projected capacitive touch panel of one embodiment of the present invention.
With reference to Fig. 3, in this touch control detecting method, at first execution in step S11 pushes or deflection one projected capacitive touch panel.Then, in step S13, detect the capacitance variations value of this projected capacitive touch panel.For example, this capacitance variations value can be the variable quantity of the total capacitance value of contact panel, also can be the variable quantity of the electric capacity self-induction value of contact panel.And for example, the variable quantity of this capacitance variations value electric capacity mutual inductance value that can also be contact panel.Then, in step S15, this capacitance variations value is converted to a touch-control input signal.For instance, when the capacitance variations value only presented the point-like variation of pure touch controllable function, this touch-control input signal was a touching signals; When the capacitance variations value only presented the wire variation of simple bending Qu Gongneng, this touch-control input signal was a deflection signal.At last, in step S17, according to this touch-control input signal, the output control signal corresponding.
In one embodiment, the capacitance variations value presents the point-like variation simultaneously and wire changes, and this control signal is the mixed signal of touch-control instruction and deflection instruction.
In one embodiment, the capacitance variations value is the variable quantity of the total capacitance value after the projected capacitive touch panel deflection.
In addition, in this touch control detecting method, control signal can be adjusted the translational speed of form according to the angle of deflection of projected capacitive touch panel.Such as, angle of deflection is big more, and the translational speed of form is fast more, and angle of deflection is more little, and the translational speed of form is slow more.
In addition, in this touch control detecting method, control signal is adjusted the scaling of form according to the deflection area of projected capacitive touch panel.This is because the flexural property data are determined that by the flexible projected capacitive touch panel contactor control device output data under the deflected can produce regular drift, just can draw concrete deflection area size according to the drift amplitude in addition.
In addition, in this touch control detecting method, control signal is controlled its mode of operation according to the deflected of projected capacitive touch panel or the state that shakeouts.For example, when contact panel was deflected into the books state, contactor control device entered dormant state; When contact panel was shakeout to horizontality, contactor control device was waken up by dormant state.
Fig. 4 illustrates in the touch control detecting method of Fig. 3, and contact panel adopts the synoptic diagram of the variable quantity of electric capacity self-induction value as the touch-control input signal during by deflection.
In general, the inductance capacitance of projected capacitive touch panel comprises two kinds of account forms: the first also can be described as the self-inductance of electric capacity from holding (self capacitance); The first is held (mutual capacitance) mutually, also can be described as the mutual induction amount of electric capacity.Specifically, the target of self-tolerant sensing is the capacitance variation of whole piece X-axis line or Y-axis line, and the target of holding the formula sensing mutually then is the capacitance variation of single X, Y cross-point.
With reference to Fig. 4, contact panel comprises a plurality of transparency electrodes 200 and 202, comprises a stray capacitance C2 between the adjacent arbitrarily transparency electrode.When contact panel in transparency electrode 202 pairing positions during by deflection, the electric capacity of these stray capacitances can change, and the closer to bending point, the variable quantity of the self-induction value of electric capacity will be big more.In this embodiment, the variable quantity maximum of the self-induction value of the stray capacitance C2 between two transparency electrodes 202, that is, can determine the deflected position of contact panel by the variation of detecting electric capacity self-induction value.
Fig. 5 (a) illustrates in the touch control detecting method of Fig. 3, adopts the synoptic diagram of the variable quantity of electric capacity mutual inductance value as the touch-control input signal when contact panel is touched.Fig. 5 (b) illustrates in the touch control detecting method of Fig. 3, and contact panel adopts the synoptic diagram of the variable quantity of electric capacity mutual inductance value as the touch-control input signal during by deflection.
Shown in Fig. 5 (a) and Fig. 5 (b), transparency electrode L+ and transparency electrode L-are by the SENSE(line of induction) detect the variable quantity of electric capacity mutual inductance value.Wherein, the situation when the corresponding contact panel of Fig. 5 (a) is touched, the situation of the corresponding contact panel of Fig. 5 (b) during by deflection.
Know easily, be different from above-mentioned self-tolerant sensing, in mutual appearance formula detection process, when thereby the finger touch panel produces finger electric capacity, because original stray capacitance only is single X, the electric capacity of Y cross-point, point the adding of electric capacity this moment, become the situation with original capacitances in series, thereby the integral capacitor value after the finger touches reduces on the contrary.In addition, appearance formula sensing is to take similar TFT-LCD(Thin Film Transistor Liquid Crystal Display mutually, Thin Film Transistor-LCD) active scan mode, when a certain Y-axis line of scanning, the inductance capacitance value of detecting all X-axis lines simultaneously changes, scan down in regular turn, the inductance capacitance value that just can obtain each X, Y cross-point changes, thus, just terrible point (Ghost Point) phenomenon that does not have the self-tolerant sensing and cause because share X, Y sense channel, thereby can locate position of touch more exactly.
Fig. 6 illustrates a specific embodiment of the touch control detecting method shown in Fig. 5 (b).Wherein, L+ and L-represent two adjacent transparent electrode lines, and S represents the line of induction, and the point of crossing of electrode wires L-and line of induction S is designated as P1, and the point of crossing of electrode wires L+ and line of induction S is designated as P2.In addition, in the coordinate curve of position of touch and capacitance variations value, the P1 point corresponds to the negative maximal value-Cm in the coordinate curve, and the P2 point corresponds to the positive maximal value Cm in the coordinate curve.Thus, when position of touch drops on transparent electrode lines L+, L-, just can determine the touch-control coordinate by the capacitance change of electric capacity mutual inductance value.
Adopt the touch control detecting method of flexible projected capacitive touch panel of the present invention, at first push or this contact panel of deflection, detect the capacitance variations value of this panel, then this capacitance variations value is converted to a touch-control input signal, and output and the corresponding control signal of this touch-control input signal.Than prior art, touch control detecting method of the present invention can present that point-like changes according to the capacitance variations value of panel and/or wire changes to determine the type of steering order, also can control the translational speed of form, scaling and work at present pattern respectively according to angle of deflection, deflection area, the deflected of panel or the state that shakeouts.
Above, describe the specific embodiment of the present invention with reference to the accompanying drawings.But those skilled in the art can understand, and under situation without departing from the spirit and scope of the present invention, can also do various changes and replacement to the specific embodiment of the present invention.These changes and replace all drop in claims of the present invention institute restricted portion.
Claims (10)
1. the touch control detecting method of a flexible projected capacitive touch panel is characterized in that, this touch control detecting method may further comprise the steps:
Push or deflection one projected capacitive touch panel;
Detect the capacitance variations value of described projected capacitive touch panel;
Described capacitance variations value is converted to a touch-control input signal; And
According to described touch-control input signal, the output control signal corresponding.
2. touch control detecting method according to claim 1 is characterized in that, when described capacitance variations value presented the point-like variation, described control signal was touch-control instruction.
3. touch control detecting method according to claim 1 is characterized in that, when described capacitance variations value presented the wire variation, described control signal was deflection instruction.
4. touch control detecting method according to claim 1 is characterized in that, when described capacitance variations value presented point-like variation and wire variation simultaneously, described control signal was the mixed signal of touch-control instruction and deflection instruction.
5. according to claim 3 or 4 described touch control detecting methods, it is characterized in that described capacitance variations value is the variable quantity of the total capacitance value after the described projected capacitive touch panel deflection.
6. according to claim 3 or 4 described touch control detecting methods, it is characterized in that described capacitance variations value is the variable quantity of the electric capacity self-induction value (self capacitance) after the described projected capacitive touch panel deflection.
7. according to claim 3 or 4 described touch control detecting methods, it is characterized in that described capacitance variations value is the variable quantity of the electric capacity mutual inductance value (mutual capacitance) after the described projected capacitive touch panel deflection.
8. touch control detecting method according to claim 1 is characterized in that, this touch control detecting method also comprises:
Described control signal is adjusted the translational speed of form according to the angle of deflection of described projected capacitive touch panel.
9. touch control detecting method according to claim 1 is characterized in that, this touch control detecting method also comprises:
Described control signal is adjusted the scaling of form according to the deflection area of described projected capacitive touch panel.
10. touch control detecting method according to claim 1 is characterized in that, this touch control detecting method also comprises:
Described control signal is controlled the mode of operation of described contact panel according to the deflected of described projected capacitive touch panel or the state that shakeouts.
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| CN 201310100994 CN103218096A (en) | 2013-03-27 | 2013-03-27 | Touch detection method for bendable projected capacitive touch panel |
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| CN 201310100994 CN103218096A (en) | 2013-03-27 | 2013-03-27 | Touch detection method for bendable projected capacitive touch panel |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104731436A (en) * | 2015-04-15 | 2015-06-24 | 京东方科技集团股份有限公司 | Flexible display device and driving method thereof |
| WO2016101310A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市华星光电技术有限公司 | Flexible touch panel |
| CN106873814A (en) * | 2015-12-14 | 2017-06-20 | 联想(北京)有限公司 | A kind of control method and electronic equipment |
| US9864467B2 (en) | 2015-07-21 | 2018-01-09 | Sitronix Technology Corp. | Calibration method and capacitive sensing device |
| CN109101126A (en) * | 2017-06-20 | 2018-12-28 | 京东方科技集团股份有限公司 | Control the method and touch display unit of flexible capacitance touch display panel |
| WO2020107330A1 (en) * | 2018-11-29 | 2020-06-04 | 深圳市柔宇科技有限公司 | Touch detection circuit, method, touch screen assembly and display panel assembly |
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2013
- 2013-03-27 CN CN 201310100994 patent/CN103218096A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016101310A1 (en) * | 2014-12-24 | 2016-06-30 | 深圳市华星光电技术有限公司 | Flexible touch panel |
| CN104731436A (en) * | 2015-04-15 | 2015-06-24 | 京东方科技集团股份有限公司 | Flexible display device and driving method thereof |
| CN104731436B (en) * | 2015-04-15 | 2017-11-21 | 京东方科技集团股份有限公司 | Flexible display apparatus and its driving method |
| US10139950B2 (en) | 2015-04-15 | 2018-11-27 | Boe Technology Group Co., Ltd. | Flexible display device and driving method thereof |
| US9864467B2 (en) | 2015-07-21 | 2018-01-09 | Sitronix Technology Corp. | Calibration method and capacitive sensing device |
| CN106873814A (en) * | 2015-12-14 | 2017-06-20 | 联想(北京)有限公司 | A kind of control method and electronic equipment |
| US10558289B2 (en) | 2015-12-14 | 2020-02-11 | Lenovo (Beijing) Limited | Control method and electronic device |
| CN106873814B (en) * | 2015-12-14 | 2020-02-21 | 联想(北京)有限公司 | Control method and electronic equipment |
| CN109101126A (en) * | 2017-06-20 | 2018-12-28 | 京东方科技集团股份有限公司 | Control the method and touch display unit of flexible capacitance touch display panel |
| WO2020107330A1 (en) * | 2018-11-29 | 2020-06-04 | 深圳市柔宇科技有限公司 | Touch detection circuit, method, touch screen assembly and display panel assembly |
| CN112703468A (en) * | 2018-11-29 | 2021-04-23 | 深圳市柔宇科技股份有限公司 | Touch detection circuit and method, touch screen assembly and display panel assembly |
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Application publication date: 20130724 |