CN102221946A - Method for indentifying water proofing of capacitive touch panel - Google Patents
Method for indentifying water proofing of capacitive touch panel Download PDFInfo
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- CN102221946A CN102221946A CN2011100734586A CN201110073458A CN102221946A CN 102221946 A CN102221946 A CN 102221946A CN 2011100734586 A CN2011100734586 A CN 2011100734586A CN 201110073458 A CN201110073458 A CN 201110073458A CN 102221946 A CN102221946 A CN 102221946A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004078 waterproofing Methods 0.000 title abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 2
- 229910004870 Cc−Cd Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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Abstract
The invention relates to a method for indentifying water proofing of a capacitive touch panel. A plurality of press keys are configured on the touch panel and a press key is also configured inside the touch panel. The method in the invention comprises the following steps: comparing the capacitance value of each press key on the touch panel with that of the press key inside the touch panel so as to know the press key which is on the touch panel and has a larger capacitance value than the press key inside the touch panel; and determining that the press key with the largest capacitance value is the touched press key. The method provided by the invention is not only simple but also can be used for promptly judging whether the press key is touched in the presence of water.
Description
Technical field
The present invention relates to a kind of method of contact panel waterproof identification, refer in particular to the method for capacitance type touch-control panel waterproof identification.
Background technology
In recent years, touch screen has developed to the people exchanges simple and the most direct mode mutually with computer, because of its in conjunction with input equipment and hardware device, and need not the input equipment of mouse or keyboard and so on, so being applied in the every field more and more widely.Capacitive touch screen particularly owing to utilized the finger and the electric capacity that screen forms of human body, does not need pressure fully so operate, and runs into screen and just responds as long as point, so easy operating more.In view of above-mentioned advantage, so the touch-control product of Chu Xianing all uses the capacitive touch control products mostly in the market.
Future, capacitance type touch-control panel will be applied in the more field, all can realize touching integrated as the home appliance in the life, but because capacitance touching control panel itself does not have the function of waterproof, so as if having dipped in water droplet accidentally on the household electrical appliances that contact panel is installed, the user is just no longer convenient when operation, and more severe patient just can not the effectively start corresponding function.So for capacitance touching control, how there is being under the environment of water correct identification touch object whether touch a great problem that becomes capacitance touching control as finger.At present, many kinds of solutions being arranged in the capacitance type touch control keys application, but be to improve at the inner structure of touch-screen mostly, is a kind of solution that can correctly discern and can waterproof and the present invention proposes.
So we wish to provide for the user a kind of method of capacitance type touch control keys waterproof identification.
Summary of the invention
The actual technical matters to be solved of the present invention is how in the solution that correct identification capacitance type touch-control panel under the water stain situation is being arranged.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of method of capacitance type touch-control panel water-proofing treatment, described contact panel is provided with plurality of keys, and its inside also is provided with a button, its step is as follows: the button that will be arranged on the contact panel is all made comparisons with the capacitance of this inside button, and judges than the big button of this inside button capacitance; The button of capacitance maximum is exactly touched button in the above-mentioned button.
The method of capacitance type touch-control panel waterproof identification of the present invention, not only simple, and one of them is arranged on the inside of contact panel with reference to button, whether even other button like this on the contact panel all is subjected to the interference of water mark, also can accurately detect has finger touches.
Description of drawings
Fig. 1 is the synoptic diagram that is provided with on the contact panel of the present invention behind the button.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
Please refer to shown in Figure 1, described contact panel is provided with several touch key-presss, the present invention adopts four touch key-press A, B, C and D, and also be provided with a button E in the inside of contact panel, described inner button E is one with reference to button, its objective is with the capacitance of all functions button on the contact panel to make comparisons mutually.
Under ecotopia, be on the contact panel under the condition without any the water mark, in theory finger touches to the capacitance that button detected all can be obviously bigger than normal, whether have button to be touched so just can judge by the electric capacity difference between the mutual relatively touch key-press.Therefore whether the capacitance Ca that at first judges button A and B and the difference of Cb greater than pre-set threshold value Co, show then that button A is touched as if its difference greater than pre-set threshold value Co; Otherwise, as be less than or equal to pre-set threshold value Co, show that then two button A and B all are not touched.Use the difference that continues to judge electric capacity between other button with quadrat method then, as the electric capacity difference between button C and the D relatively whether greater than pre-set threshold value Co, if capacitance Cc-Cd＞0, then represent button C to be touched, otherwise, as be less than or equal to pre-set threshold value Co, show that then two button C and D all are not touched.In like manner, continue to calculate respectively the electric capacity difference between button A and D and B and the C, and make comparisons, finally judge the button that is touched with pre-set threshold value Co.
And under the situation that the water mark is arranged on the touch-screen, at this moment just need to introduce with reference to button E, with each button on the contact panel all with make comparisons with reference to button E, and its difference is greater than pre-set threshold value Co, then think have water stain; Otherwise if be less than or equal to pre-set threshold value Co, then to think do not have the water mark; The size of its capacitance in the button of water mark is relatively arranged at last, and wherein the button of capacitance maximum just shows finger touches, if capacitance all equates, shows that all buttons all are touched, below our illustrated in greater detail.
At first, all buttons on the contact panel are all made comparisons with the capacitance with reference to button, the present invention needs successively to compare with the electric capacity of reference button E for the capacitance of button A, B, C and D, if the difference of button Ca and Ce is greater than pre-set threshold value Co, then show the water mark is arranged on the button Ca, if above-mentioned difference is not more than pre-set threshold value Co, then showing does not have the water mark; Whether the difference that in like manner continues relatively button Cb and Ce greater than pre-set threshold value Co, if greater than, showing has the water mark on the button Cb, as if less than, showing does not have the water mark; Continue to judge the capacitance Cc of button C and D and Cd respectively with the size of the capacitor C e of reference button E, if greater than, showing has the water mark, if less than, showing does not have the water mark.If after judging, A in the above-mentioned button, B and C all have the water mark, then continue to judge capacitance Ca, the Cb of above-mentioned button and the size of Cc, and wherein the button of capacitance maximum just shows by finger touches, if capacitance all equates, shows that then described button A, B and C are all touched.
Ultimate principle of the present invention is: because water itself has electric conductivity, under the situation that has the water mark to cover, the capacitance of button is basic identical on its contact panel, just can't judge by the mutual relatively method of capacitance whether finger touches is arranged as continuing this moment.But the button that is touched is owing to its capacitance of reason of finger touches can be bigger slightly than other button electric capacity that is not touched, and be provided with the inside of contact panel with reference to button, it can not be subjected to the influence of water mark, thus its by with the comparison of reference button electric capacity just can be correct identify whether button is touched.
Method of the present invention, owing to be arranged on the inside of contact panel with reference to button, thus can not be subjected to the interference of water mark, so whether the button that is positioned on the contact panel just can it be reference and then judge touched under the situation that the water mark is arranged.
Claims (7)
1. the method for capacitance type touch-control panel waterproof identification, described contact panel is provided with plurality of keys, and its inside also is provided with a button, and its step is as follows:
The button that is arranged on the contact panel is all made comparisons with the capacitance of this inside button, and judge than the big button of this inside button capacitance;
The button of capacitance maximum is exactly touched button in the above-mentioned button.
2. the method for claim 1, it is characterized in that: the described button that is positioned at contact panel inside is with reference to button.
3. method as claimed in claim 2 is characterized in that: the button on the described contact panel all is meant and judges that its difference is whether in pre-set threshold value with making comparisons with reference to the capacitance of button.
4. method as claimed in claim 3 is characterized in that: greater than pre-set threshold value, then showing has the water mark as if described difference.
5. method as claimed in claim 3 is characterized in that: not in pre-set threshold value, then showing does not have the water mark as if described difference.
6. method as claimed in claim 2 is characterized in that: described ratio need be judged its maximum capacitor value corresponding key once more with reference in the big button of button capacitance.
7. method as claimed in claim 6 is characterized in that: described ratio is with reference in the big button of button capacitance, if all values all equates, shows that then described button all is pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100734586A CN102221946A (en) | 2011-03-25 | 2011-03-25 | Method for indentifying water proofing of capacitive touch panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100734586A CN102221946A (en) | 2011-03-25 | 2011-03-25 | Method for indentifying water proofing of capacitive touch panel |
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| CN102221946A true CN102221946A (en) | 2011-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100734586A Pending CN102221946A (en) | 2011-03-25 | 2011-03-25 | Method for indentifying water proofing of capacitive touch panel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594363A (en) * | 2012-02-29 | 2012-07-18 | 苏州瀚瑞微电子有限公司 | Scanning method of capacitance touch button and press determination method |
| CN103049159A (en) * | 2013-01-14 | 2013-04-17 | 成都西可科技有限公司 | Method for preventing water drop false triggering of capacitive touch screen |
| WO2015180387A1 (en) * | 2014-05-30 | 2015-12-03 | 小米科技有限责任公司 | Touchscreen control method and device |
| CN105389542A (en) * | 2015-10-19 | 2016-03-09 | 广东欧珀移动通信有限公司 | A method and device for determining foreign matter on the surface of a terminal fingerprint sensor |
| CN106445141A (en) * | 2016-09-23 | 2017-02-22 | 广东小天才科技有限公司 | Control method and device for capacitive touch screen terminal |
| CN107301006A (en) * | 2016-04-14 | 2017-10-27 | 苏州芯沃科电子科技有限公司 | A kind of capacitance plate water-proofing treatment pre-judging method |
| CN112016364A (en) * | 2019-05-31 | 2020-12-01 | 比亚迪股份有限公司 | Fingerprint identification device, surface foreign matter detection method thereof and electronic equipment |
| CN112470168A (en) * | 2018-07-30 | 2021-03-09 | 德克萨斯仪器股份有限公司 | Locking algorithm using driven shield and touch element |
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| CN101866252A (en) * | 2010-07-09 | 2010-10-20 | 苏州瀚瑞微电子有限公司 | Waterproof method of capacitance type touch apparatus |
| CN101976135A (en) * | 2010-07-27 | 2011-02-16 | 苏州瀚瑞微电子有限公司 | Calibrating method of touch screen |
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2011
- 2011-03-25 CN CN2011100734586A patent/CN102221946A/en active Pending
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| CN1797309A (en) * | 2004-12-27 | 2006-07-05 | 盛群半导体股份有限公司 | Interpretation method of touch sensing device |
| CN101866252A (en) * | 2010-07-09 | 2010-10-20 | 苏州瀚瑞微电子有限公司 | Waterproof method of capacitance type touch apparatus |
| CN101976135A (en) * | 2010-07-27 | 2011-02-16 | 苏州瀚瑞微电子有限公司 | Calibrating method of touch screen |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102594363A (en) * | 2012-02-29 | 2012-07-18 | 苏州瀚瑞微电子有限公司 | Scanning method of capacitance touch button and press determination method |
| CN103049159A (en) * | 2013-01-14 | 2013-04-17 | 成都西可科技有限公司 | Method for preventing water drop false triggering of capacitive touch screen |
| CN103049159B (en) * | 2013-01-14 | 2015-07-01 | 成都西可科技有限公司 | Method for preventing water drop false triggering of capacitive touch screen |
| US9785295B2 (en) | 2014-05-30 | 2017-10-10 | Xiaomi Inc. | Touch screen control method and device |
| WO2015180387A1 (en) * | 2014-05-30 | 2015-12-03 | 小米科技有限责任公司 | Touchscreen control method and device |
| CN105389542A (en) * | 2015-10-19 | 2016-03-09 | 广东欧珀移动通信有限公司 | A method and device for determining foreign matter on the surface of a terminal fingerprint sensor |
| CN105389542B (en) * | 2015-10-19 | 2017-12-08 | 广东欧珀移动通信有限公司 | A method and device for determining foreign matter on the surface of a terminal fingerprint sensor |
| CN107844754A (en) * | 2015-10-19 | 2018-03-27 | 广东欧珀移动通信有限公司 | A kind of decision method and device of Terminal fingerprints sensor surface foreign matter |
| US10628653B2 (en) | 2015-10-19 | 2020-04-21 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Method and apparatus for determining existence of foreign material on surface of fingerprint sensor of terminal |
| CN107301006A (en) * | 2016-04-14 | 2017-10-27 | 苏州芯沃科电子科技有限公司 | A kind of capacitance plate water-proofing treatment pre-judging method |
| CN107301006B (en) * | 2016-04-14 | 2020-01-14 | 苏州芯沃科电子科技有限公司 | Capacitive screen waterproof processing prejudging method |
| CN106445141A (en) * | 2016-09-23 | 2017-02-22 | 广东小天才科技有限公司 | Control method and device for capacitive touch screen terminal |
| CN106445141B (en) * | 2016-09-23 | 2019-09-17 | 广东小天才科技有限公司 | A control method and device for a capacitive touch screen terminal |
| CN112470168A (en) * | 2018-07-30 | 2021-03-09 | 德克萨斯仪器股份有限公司 | Locking algorithm using driven shield and touch element |
| CN112016364A (en) * | 2019-05-31 | 2020-12-01 | 比亚迪股份有限公司 | Fingerprint identification device, surface foreign matter detection method thereof and electronic equipment |
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Application publication date: 20111019 |