CN102375630B - Surface capacitance type touch control device and control method thereof - Google Patents
Surface capacitance type touch control device and control method thereof Download PDFInfo
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- CN102375630B CN102375630B CN201010255201.8A CN201010255201A CN102375630B CN 102375630 B CN102375630 B CN 102375630B CN 201010255201 A CN201010255201 A CN 201010255201A CN 102375630 B CN102375630 B CN 102375630B
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- capacitive touch
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Abstract
The invention provides a surface capacitance type touch control device and a control method thereof. The control method of the surface capacitance type touch control device comprises the following steps of: providing first output power to a surface capacitance type touch control panel so that four corners of the surface capacitance type touch control panel discharge; and providing second power to the surface capacitance type touch control panel when the touch of the surface capacitance type touch control panel by an object is not detected in a preset time, wherein the second output power is lower than the first output power.
Description
Technical field
The present invention relates to a kind of surface capacitance type contactor control device, particularly relate to a kind of surface capacitance type contactor control device that can reduce power consumption stream.
Background technology
Along with science and technology is maked rapid progress, for the performance requirement of electronic product, also improve day by day, as the simplification of the miniaturization of size, the convenience of carrying, operation etc.The use that can save keyboard due to touch technology.Therefore the electronic product that, has a touch technology is little by little applied on Automated Teller Machine (ATM), mobile phone.
The one of touch technology is surface capacitance type touch technology.This kind of surface capacitance type contactor control device is to utilize the one group of electric current that flows to four jiaos of panels to differentiate the position of finger.But use at present in large-sized surface capacitance type contactor control device, if the power consumption stream of Automated Teller Machine is at least about there being 50 milliamperes (mA).If portable surface capacitive touch device still has so large power consumption stream, be unfavorable for long-time use.
Summary of the invention
In view of this, the embodiment of the present invention proposes a kind of surface capacitance type contactor control device and control method thereof with battery saving mode, by the output power that reduces driving circuit effects on surface capacitance type touch-control panel, significantly reduce power consumption stream, greatly increase the service time of portable surface capacitive touch device.
According to one embodiment of the invention, a kind of control method that is used in a surface-capacitive touch panel is proposed, comprising: provide one first output power to this surface-capacitive touch panel, make four jiaos of electric discharges of this surface-capacitive touch panel; An object in a Preset Time, do not detected and touch this surface-capacitive touch panel, provide one second output power to this surface-capacitive touch panel; Reduce by an output voltage, make at least one angle of four jiaos of this surface-capacitive touch panel stop electric discharge and at least one angle is electric discharge; And this at least one angle of this surface-capacitive touch panel of touching electric discharge, to reply, provide this first output power to this surface-capacitive touch panel, wherein this second output power is less than this first output power.
According to another embodiment of the present invention, propose a kind of control method that is used in a surface-capacitive touch panel, comprising: provide one first output power to this surface-capacitive touch panel, make four jiaos of electric discharges of this surface-capacitive touch panel; An object in a Preset Time, do not detected and touch this surface-capacitive touch panel, provide one second output power to this surface-capacitive touch panel; Reduce by an output voltage, at least one angle electric discharge of this surface-capacitive touch panel is reduced by half; And touch this surface-capacitive touch panel, to reply, provide this first output power to this surface-capacitive touch panel; Wherein this second output power is less than this first output power.
According to another embodiment of the present invention, propose a kind of surface capacitance type contactor control device, comprising: a surface-capacitive touch panel; And one drive circuit, be coupled to this surface-capacitive touch panel, in order to provide an output power to this surface-capacitive touch panel, make four jiaos of electric discharges of this surface-capacitive touch panel; Wherein this driving circuit reduces by an output voltage, makes at least one angle of four jiaos of this surface-capacitive touch panel stop electric discharge and at least one angle is electric discharge; And this angle of this surface-capacitive touch panel of touching electric discharge, this driving circuit is replied provides this output power to this surface-capacitive touch panel, an object wherein in a Preset Time, do not detected and touch this surface-capacitive touch panel, this driving circuit reduces this output power.
According to another embodiment of the present invention, propose a kind of surface capacitance type contactor control device, comprising: a surface-capacitive touch panel; And one drive circuit, be coupled to this surface-capacitive touch panel, in order to provide an output power to this surface-capacitive touch panel, make four jiaos of electric discharges of this surface-capacitive touch panel; Wherein this driving circuit reduces by an output voltage, and at least one angle electric discharge of this surface-capacitive touch panel is reduced by half; And touch this surface-capacitive touch panel, this driving circuit is replied provides this output power to this surface-capacitive touch panel, an object wherein in a Preset Time, do not detected and touch this surface-capacitive touch panel, this driving circuit reduces this output power.
For foregoing of the present invention can be become apparent, special embodiment below, and be described with reference to the accompanying drawings as follows.
Accompanying drawing explanation
Fig. 1 show according to the surface capacitance type contactor control device of the embodiment of the present invention schematic diagram.
Fig. 2 shows the process flow diagram of control method of the surface capacitance type contactor control device of Fig. 1.
Fig. 3 A shows the surface capacitance type contactor control device of Fig. 1 in normal mode, and driving circuit is exported to the wherein oscillogram of output voltage of a jiao of surface-capacitive touch panel.
Fig. 3 B shows the surface capacitance type contactor control device of Fig. 1 in battery saving mode, and driving circuit is exported to the wherein oscillogram of output voltage of a jiao of surface-capacitive touch panel, and wherein, the amplitude of output voltage reduces.
Fig. 3 C shows the surface capacitance type contactor control device of Fig. 1 in battery saving mode, and driving circuit is exported to wherein another waveform example of output voltage of a jiao of surface-capacitive touch panel, and wherein, the frequency of output voltage reduces.
Reference numeral explanation
10: surface capacitance type contactor control device
12: surface-capacitive touch panel
13: finger
14: driving circuit
122,124,126,128: angle
S210, S220, S230, S231, S232, S250: step
Embodiment
Referring to Fig. 1 and Fig. 2, Fig. 1 shows the surface capacitance type contactor control device 10 of the embodiment of the present invention.Fig. 2 shows the control method of the surface capacitance type contactor control device 10 of Fig. 1.As shown in Figure 1, surface capacitance type contactor control device 10 comprises surface-capacitive touch panel 12 and drive unit 14.Four jiao 122,124,126 and 128 of surface-capacitive touch panel 12 is electrically connected driving circuit 14.
When surface capacitance type contactor control device 10 is during at a normal mode, driving circuit 14 provides one first output power to surface-capacitive touch panel 12 (as step S210), make four jiao 122,124,126 and 128 electric discharges of surface-capacitive touch panel 12, allow surface capacitance type contactor control device 10 can respond to object.For example, if user's finger 13 touches the position of surface-capacitive touch panel 12, surface capacitance type contactor control device 10 can carry out computing to detect the position of touching a little.
In a Preset Time, for example 5 minutes, surface capacitance type contactor control device 10 detected and has or not object to touch surface-capacitive touch panel 12 (as step S220).If have, driving circuit 14 continues to provide the first output power.If object detected in Preset Time, do not touch surface-capacitive touch panel 12, surface capacitance type contactor control device 10 enters a battery saving mode, for example park mode.When battery saving mode, driving circuit 14 provides the second output power to surface-capacitive touch panel 12, and wherein, the second output power is less than the first output power (as step S230).That is when surface capacitance type contactor control device 10 is entered after battery saving mode by normal mode, driving circuit 14 can reduce its output power, reduces power consumption stream.
If driving circuit 14 is to reduce the output voltage export to surface-capacitive touch panel 12 to reduce output power, driving circuit 14 can effects on surface capacitance type touch-control panel 12 four jiao 122,124, at least one angle of 126 and 128 stop output power and normal output power at least one angle, reduce output voltage.For instance, when at normal mode, four jiao 122,124 of driving circuit 14 effects on surface capacitance type touch-control panels 12,126 and 128 output current are respectively 10 milliamperes (mA); At surface capacitance type contactor control device 10, enter after battery saving mode, driving circuit 14 stops output voltage to one jiao (as angle 122) of surface-capacitive touch panel 12, but to 124,126 and 128 normal output voltages of other triangle (such as, its electric current is 10mA), make driving circuit 14 reduce the output voltage of effects on surface capacitance type touch-control panel 12.
Or, driving circuit 14 for example can stop output voltage, to its intermediate cam of surface-capacitive touch panel 12 (122,124,126), one of effects on surface capacitance type touch-control panel 12 jiao of 128 normal output voltage only, further reduces the output voltage of effects on surface capacitance type touch-control panel 12.
In addition, driving circuit 14 can reduce exports to four jiao 122,124 of surface-capacitive touch panel 12, the output voltage (such as output voltage is reduced by half) at least one angle (as angle 122) of 126 and 128, to reduce the output power of effects on surface capacitance type touch-control panel 12.For example, when surface capacitance type contactor control device 10 is during at normal mode, four jiao 122,124 of driving circuit 14 effects on surface capacitance type touch-control panels 12,126 and 128 output voltage are as shown in Figure 3A.When surface capacitance type contactor control device 10 enters after battery saving mode, as shown in Figure 3 B, the output voltage at least one angle of four jiaos of driving circuit 14 effects on surface capacitance type touch-control panels 12 reduces by half.Or driving circuit 14 reduces exports to four jiao 122,124 of surface-capacitive touch panel 12,126 and 128 the output voltage of four jiaos (such as output voltage is reduced by half), to reduce the output power of effects on surface capacitance type touch-control panel 12.
In addition,, when surface capacitance type contactor control device 10 enters after battery saving mode, as shown in Figure 3 C, driving circuit 14 also can be reduced to half by the sweep frequency of exporting to surface-capacitive touch panel 12, reduces output power.
When if user wants to operate this surface capacitance type contactor control device 10, user's finger 13 touches this angle of regular picture, driving circuit 14 can be replied provides the first output power to surface-capacitive touch panel 12 (step S250), and computing is carried out in the position that surface capacitance type contactor control device 10 can be touched according to object.
In other embodiment, driving circuit 14 can and further reduce output power with reducing sweep frequency with the mode that reduces output voltage, to reduce power consumption stream.
In embodiments of the present invention, tube drive circuit 14 is not to reduce sweep frequency or reduce output voltage, and in the case, surface capacitance type contactor control device 10 still can detect object and whether touch surface-capacitive touch panel 12.That is to say, when battery saving mode, surface capacitance type contactor control device 10 detects object and touches after surface-capacitive touch panel 12, driving circuit 14 is replied the first output power (as step S250) is provided, and makes surface capacitance type contactor control device 10 can detect the position that object touches surface-capacitive touch panel 12.
Therefore, the surface capacitance type contactor control device that the embodiment of the present invention proposes enters after battery saving mode, driving circuit can reduce the output power of effects on surface capacitive touch panel, allow the power consumption stream of surface capacitance type contactor control device reduce significantly, when the surface capacitance type contactor control device of the embodiment of the present invention is while powering with battery, can significantly increase service time/waiting time.
In sum, although the present invention discloses as above with embodiment, so it is not in order to limit the present invention.Those skilled in the art, under the premise without departing from the spirit and scope of the present invention, can be used for a variety of modifications and variations.Therefore, protection scope of the present invention is to be as the criterion with claim of the present invention.
Claims (10)
1. a control method that is used in a surface-capacitive touch panel, comprising:
Provide one first output power to this surface-capacitive touch panel, make four jiaos of electric discharges of this surface-capacitive touch panel;
An object in a Preset Time, do not detected and touch this surface-capacitive touch panel, provide one second output power to this surface-capacitive touch panel;
Reduce by an output voltage, make at least one angle of four jiaos of this surface-capacitive touch panel stop electric discharge and at least one angle is electric discharge; And
This at least one angle of this surface-capacitive touch panel of touching electric discharge, provides this first output power to this surface-capacitive touch panel to reply,
Wherein this second output power is less than this first output power.
2. a control method that is used in a surface-capacitive touch panel, comprising:
Provide one first output power to this surface-capacitive touch panel, make four jiaos of electric discharges of this surface-capacitive touch panel;
An object in a Preset Time, do not detected and touch this surface-capacitive touch panel, provide one second output power to this surface-capacitive touch panel;
Reduce by an output voltage, at least one angle electric discharge of this surface-capacitive touch panel is reduced by half; And
Touch this surface-capacitive touch panel, to reply, provide this first output power to this surface-capacitive touch panel;
Wherein this second output power is less than this first output power.
3. control method as claimed in claim 1 or 2, also comprises:
When this object touches this surface-capacitive touch panel, reply and provide this first output power to this surface-capacitive touch panel.
4. control method as claimed in claim 1 or 2, wherein, provides this second output power by reducing one scan frequency.
5. control method as claimed in claim 1 or 2, wherein, provides this second output power by reducing this output voltage.
6. a surface capacitance type contactor control device, comprising:
One surface-capacitive touch panel; And
One drive circuit, is coupled to this surface-capacitive touch panel, in order to provide an output power to this surface-capacitive touch panel, makes four jiaos of electric discharges of this surface-capacitive touch panel;
Wherein this driving circuit reduces by an output voltage, makes at least one angle of four jiaos of this surface-capacitive touch panel stop electric discharge and at least one angle is electric discharge; And this angle of this surface-capacitive touch panel of touching electric discharge, this driving circuit is replied provides this output power to this surface-capacitive touch panel,
An object wherein in a Preset Time, do not detected and touch this surface-capacitive touch panel, this driving circuit reduces this output power.
7. a surface capacitance type contactor control device, comprising:
One surface-capacitive touch panel; And
One drive circuit, is coupled to this surface-capacitive touch panel, in order to provide an output power to this surface-capacitive touch panel, makes four jiaos of electric discharges of this surface-capacitive touch panel;
Wherein this driving circuit reduces by an output voltage, and at least one angle electric discharge of this surface-capacitive touch panel is reduced by half; And touch this surface-capacitive touch panel, this driving circuit is replied provides this output power to this surface-capacitive touch panel,
An object wherein in a Preset Time, do not detected and touch this surface-capacitive touch panel, this driving circuit reduces this output power.
8. the surface capacitance type contactor control device as described in claim 6 or 7, wherein, when this object touches this surface-capacitive touch panel, this driving circuit is replied provides this output power to this surface-capacitive touch panel.
9. the surface capacitance type contactor control device as described in claim 6 or 7, wherein this driving circuit is to reduce this output power by reducing one scan frequency.
10. the surface capacitance type contactor control device as described in claim 6 or 7, wherein this driving circuit is to reduce this output power by reducing this output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255201.8A CN102375630B (en) | 2010-08-17 | 2010-08-17 | Surface capacitance type touch control device and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010255201.8A CN102375630B (en) | 2010-08-17 | 2010-08-17 | Surface capacitance type touch control device and control method thereof |
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| Publication Number | Publication Date |
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| CN102375630A CN102375630A (en) | 2012-03-14 |
| CN102375630B true CN102375630B (en) | 2014-03-12 |
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| CN201010255201.8A Expired - Fee Related CN102375630B (en) | 2010-08-17 | 2010-08-17 | Surface capacitance type touch control device and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103543857A (en) * | 2012-07-10 | 2014-01-29 | 瀚宇彩晶股份有限公司 | Driving device and method of touch panel |
| CN104407750A (en) * | 2014-05-31 | 2015-03-11 | 福州大学 | 3D (Three-Dimensional) production method of capacitive touch screen |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744023A (en) * | 2004-08-31 | 2006-03-08 | 义隆电子股份有限公司 | Capacitance contact-control board structure and electricity saving mechanism using same |
| CN101561730A (en) * | 2008-04-16 | 2009-10-21 | 义隆电子股份有限公司 | Power-saving capacitance touch control device and method thereof |
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2010
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1744023A (en) * | 2004-08-31 | 2006-03-08 | 义隆电子股份有限公司 | Capacitance contact-control board structure and electricity saving mechanism using same |
| CN101561730A (en) * | 2008-04-16 | 2009-10-21 | 义隆电子股份有限公司 | Power-saving capacitance touch control device and method thereof |
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| CN102375630A (en) | 2012-03-14 |
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