CN102830874B - A kind of method improving capacitive touch screen antistatic property - Google Patents
A kind of method improving capacitive touch screen antistatic property Download PDFInfo
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- CN102830874B CN102830874B CN201210283861.6A CN201210283861A CN102830874B CN 102830874 B CN102830874 B CN 102830874B CN 201210283861 A CN201210283861 A CN 201210283861A CN 102830874 B CN102830874 B CN 102830874B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
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Abstract
A kind of method improving capacitive touch screen antistatic property, described capacitive touch screen is arranged on electronic equipment, described circuit comprise master chip and with the interconnective sensor of master chip and touch-screen control IC module, described method step is as follows: 1, arrange capacitive touch screen and be buckled in maximum offset XMAX object causing capacitive touch screen relative capacity central value R; 2, whether sensor Detection capacitance formula touch-screen overturns, and touch-screen faces down; No, then cycle detection; Then perform step 3; 3, the side-play amount BIAS of capacitive touch screen reference capacitance amount central value relative to normal value R is calculated; 4, XMAX and BIAS is compared, if XMAX >=BIAS, then return step 3; If XMAX < is BIAS, then perform step 5; 5, master chip carries out power-off to touch-screen control IC module or improves the process of XMAX value.The present invention can effectively improve capacitive touch screen antistatic property, and reduces cost.
Description
Technical field
The present invention relates to a kind of mobile terminal device, particularly relate to a kind of method improving capacitive touch screen antistatic property.
Background technology
In prior art, with the electronic equipment of capacitive touch screen, correspond to the antistatic effect improving capacitive touch screen; The anti-static ability of the current monomer of capacitive touch screen can reach 15KV and more than, but use once install in electronic equipment, particularly electronic equipment is buckled on desktop or other objects with the one side of capacitive touch screen, the but decline at double of its anti-static ability.
Existing electronic equipment is in process electrostatic prevention; increase corresponding Anti-static device all in the electronic device; the abbreviation of Electro-Staticdischarge as English in ESD(; Chinese is for Electro-static Driven Comb) period to be to reach the effect of capacitive touch screen in corresponding protection electronic equipment; but this measure brings increase cost for manufacturer; when particularly social resources are more and more shorter; how to reduce Material Cost; and can effectively improve capacitive touch screen antistatic effect, be the technical issues that need to address of the present invention.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of method improving capacitive touch screen antistatic property is provided, can effectively improve capacitive touch screen antistatic property, and reduce cost.
In order to achieve the above object, the technical solution used in the present invention is, a kind of method improving capacitive touch screen antistatic property, described capacitive touch screen is arranged on electronic equipment, and electronic equipment is provided with antistatic treatment circuit, described circuit comprise master chip and with the interconnective sensor of master chip and touch-screen control IC module, described method step is as follows:
Step 1, capacitive touch screen is set is buckled in maximum offset XMAX object causing capacitive touch screen relative capacity central value R;
Whether step 2, sensor Detection capacitance formula touch-screen overturn, and touch-screen is downward; No, then cycle detection; Then perform step 3;
Step 3, calculating capacitive touch screen reference capacitance amount central value are relative to the side-play amount BIAS of normal value R;
Step 4, XMAX and BIAS to be compared, if XMAX >=BIAS, then return step 3; If XMAX < is BIAS, then perform step 5;
Step 5, master chip process touch-screen control IC module.
Further, electronic equipment be provided with one or more can the sensor of detected electrons device capacitances formula touch panel direction.
Further, described sensor is gravity sensor.
Further, electric capacity central value R is rest capacitance value, for capacitive touch screen connects touch-screen control IC module and the relative capacity amount exported after powering on simultaneously.
Further, capacitive touch screen described in step 1 is buckled in and object causes the side-play amount of capacitive touch screen relative capacity central value R be the variable quantity of capacitance plate geo-stationary capacitance, when finger or electrostatic contact capacitance plate time, there is corresponding change in capacitance.
Further, described capacitive touch screen is buckled on object and causes the side-play amount of capacitive touch screen relative capacity central value R to be detected by touch-screen control IC module.
Further, described maximum offset XMAX is that capacitive touch screen is buckled in peak excursion electric capacity object causing capacitive touch screen relative capacity central value R, and the setting of maximum offset XMAX sets by when dispatching from the factory, and adjusts according to user's service condition.
Further, whether the sensor Detection capacitance formula touch-screen described in step 2 overturns is measured realization by gravity sensor, gravity sensor measurement due to the acceleration that gravity causes, calculates capacitive touch screen angle of inclination with respect to the horizontal plane when capacitive touch screen overturns.
Further, the master chip described in step 5 carries out process to touch-screen control IC module and comprises: notice capacitance plate controls IC module is carried out process and comprised capacitive touch screen IC reduction capacitive touch screen sensitivity or by capacitive touch screen IC power-off.
Further, described capacitive touch screen IC reduces capacitive touch screen sensitivity adjustment and comprises:
Read capacitive touch screen rest capacitance value R;
And the maximum offset XMAX of capacitance geo-stationary capacitance R when touching capacitive touch screen is adjusted to is greater than BIAS;
Then as XMAX > BIAS, sensitivity of touch screen reduces.
Further, described electronic equipment is the equipment of the capacitive touch screens such as mobile phone, MP3, MP4, E-book reader or palm PC.
Compared with prior art, the invention has the beneficial effects as follows: when not adding corresponding ESD device, judge by carrying out detection to the capacitance of capacitive touch screen, according to judged result to capacitive touch screen IC reduction capacitive touch screen sensitivity or by capacitive touch screen IC power-off, prevent the bad phenomenon caused by electrostatic damage or false triggering, reduce complete machine cost, improve security performance.
Accompanying drawing explanation
Fig. 1 is antistatic treatment circuit of the present invention;
Fig. 2 is method flow diagram of the present invention;
Fig. 3 is that touch-screen is turned to desktop schematic diagram.
Embodiment
Be described in detail, to be interpretated more in-depth technical characteristic of the present invention and advantage with reference to accompanying drawing below in conjunction with embodiment.
Antistatic treatment circuit of the present invention as shown in Figure 1, a kind of method improving capacitive touch screen antistatic property, described capacitive touch screen is arranged on electronic equipment, and electronic equipment is provided with antistatic treatment circuit, described circuit comprise master chip and with the interconnective sensor of master chip and touch-screen control IC module.
The effect of master chip is the data processing centre (DPC) of whole electronic equipment; The effect of sensor is the deflection speed state that detection complete machine has relative to horizontal direction; The effect of touch-screen control IC is the variable quantity of the electric capacity detecting each point on touch-screen and is translated into digital quantity; In whole process, capacitive touch screen control IC detects the variable quantity of electric capacity on touch-screen and is converted into digital quantity, is transferred to master chip, then carries out corresponding data processing.
As shown in Figure 2, described method step is as follows for method flow diagram of the present invention:
Step 1, capacitive touch screen is set is buckled in maximum offset XMAX object causing capacitive touch screen relative capacity central value R;
Whether step 2, sensor Detection capacitance formula touch-screen overturn, and touch-screen is downward; No, then cycle detection; Then perform step 3;
Step 3, calculating capacitive touch screen reference capacitance amount central value are relative to the side-play amount BIAS of normal value R;
Step 4, XMAX and BIAS to be compared, if XMAX >=BIAS, then return step 3; If XMAX < is BIAS, then perform step 5;
Step 5, master chip process touch-screen control IC module.
Further, electronic equipment be provided with one or more can the sensor of detected electrons device capacitances formula touch panel direction.
Further, described sensor is gravity sensor.
Further, electric capacity central value R is rest capacitance value, for capacitive touch screen connects touch-screen control IC module and the relative capacity amount exported after powering on simultaneously.
Further, capacitive touch screen described in step 1 is buckled in and object causes the side-play amount of capacitive touch screen relative capacity central value R be the variable quantity of capacitance plate geo-stationary capacitance, when finger or electrostatic contact capacitance plate time, there is corresponding change in capacitance.
Further, described capacitive touch screen is buckled on object and causes the side-play amount of capacitive touch screen relative capacity central value R to be detected by touch-screen control IC module.
Further, described maximum offset XMAX is that capacitive touch screen is buckled in peak excursion electric capacity object causing capacitive touch screen relative capacity central value R, and the setting of maximum offset XMAX sets by when dispatching from the factory, and adjusts according to user's service condition.Then R ± XMAX is the sensitivity threshold values of capacitive touch screen, when the capacitance more than R+XMAX or R-XMAX, just thinks that touch-screen has action or upset.
Further, whether the sensor Detection capacitance formula touch-screen described in step 2 overturns is measured realization by gravity sensor, gravity sensor measurement due to the acceleration that gravity causes, calculates capacitive touch screen angle of inclination with respect to the horizontal plane when capacitive touch screen overturns.
Further, the master chip described in step 5 carries out process to touch-screen control IC module and comprises: notice capacitance plate controls IC module is carried out process and comprised capacitive touch screen IC reduction capacitive touch screen sensitivity or by capacitive touch screen IC power-off.
Further, described capacitive touch screen IC reduces capacitive touch screen sensitivity adjustment and comprises:
Read capacitive touch screen rest capacitance value R;
And the maximum offset XMAX of capacitance geo-stationary capacitance R when touching capacitive touch screen is adjusted to is greater than BIAS, BIAS is herein the maximal value that many experiments obtains, and XMAX is adjusted to XMAX > BIAS;
Then as XMAX > BIAS, sensitivity of touch screen reduces.
Further, described electronic equipment is the equipment of the capacitive touch screens such as mobile phone, MP3, MP4, E-book reader or palm PC.
Suppose that the electric capacity central value R of mobile phone is 8000, and threshold values is 8200, when touch-screen upset is near desktop, each point of capacitive touch screen will will change because of the inconsistent rest capacitance of producing in the scope of 8000 plus-minuss 200,200 is maximum offset XMAX, as long as finger touch makes electric capacitance change more than 8200 or lower than 7800, just think there is action; Because the reason of electrostatic, when detection is judged to be that machine button on the table, arranging now XMAX is 8400, and namely threshold values is set to 8400, and electrostatic is beaten on screen, is easy to make point on screen more than 8200, but is not easy more than 8400.
As shown in Figure 3, when with capacitive touch screen and corresponding detection side to the electronic equipment of sensor be placed on desktop or other place the object of electronic equipments, now whether overturn by sensor Detection capacitance formula touch-screen, measured by gravity sensor and realize, gravity sensor measurement due to the acceleration that gravity causes, calculates capacitive touch screen angle of inclination with respect to the horizontal plane when capacitive touch screen overturns.When the capacitance touch panel of handheld device of user being detected near desktop, now calculate the side-play amount BIAS of capacitive touch screen reference capacitance amount central value relative to normal value 8000; As long as finger touch makes electric capacitance change more than 8200 or lower than 7800, just think there is action; Suppose that threshold values is set to 8400 by user, electrostatic is beaten on screen, is easy to make point on screen more than 8200, but is not easy more than 8400, then, when contacting desktop or object, be not easy erroneous judgement, safe and reliable.Improve a lot of user because personal like, total love is buckled in mobile phone on desk, and clothes produces electrostatic, and contact mobile phone electric discharge of pledging clothes causes not touching and the problems such as outgoing call.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For those skilled in the art of the invention, without departing from the inventive concept of the premise, make simple change or optimize, all should be considered as protection scope of the present invention.
Claims (9)
1. one kind is improved the method for capacitive touch screen antistatic property, described capacitive touch screen is arranged on electronic equipment, and electronic equipment is provided with antistatic treatment circuit, described circuit comprise master chip and with the interconnective sensor of master chip and touch-screen control IC module, it is characterized in that, described method step is as follows:
Step 1, capacitive touch screen is set is buckled in maximum offset XMAX object causing capacitive touch screen relative capacity central value R;
Whether step 2, sensor Detection capacitance formula touch-screen overturn, and touch-screen faces down; No, then cycle detection; Then perform step 3;
Step 3, calculating capacitive touch screen reference capacitance amount central value are relative to the side-play amount BIAS of electric capacity central value R;
Step 4, XMAX and BIAS to be compared, if XMAX >=BIAS, then return step 3; If XMAX < is BIAS, then perform step 5;
Step 5, master chip carry out power down to touch-screen control IC module or improve the process of XMAX value;
Capacitive touch screen described in step 1 is buckled in and object causes the side-play amount of capacitive touch screen relative capacity central value R be the variable quantity of capacitance plate geo-stationary capacitance, when point or electrostatic contact capacitance plate time, there is corresponding change in capacitance.
2. the method improving capacitive touch screen antistatic property according to claim 1, is characterized in that: electronic equipment is provided with one or more can the sensor of detected electrons device capacitances formula touch panel direction.
3. the method improving capacitive touch screen antistatic property according to claim 2, is characterized in that: described sensor is gravity sensor.
4. the method improving capacitive touch screen antistatic property according to claim 1, is characterized in that: electric capacity central value R is rest capacitance value, for capacitive touch screen connects touch-screen control IC module and the relative capacity amount exported after powering on simultaneously.
5. the method improving capacitive touch screen antistatic property according to claim 1, is characterized in that: described capacitive touch screen is buckled on object and causes the side-play amount of capacitive touch screen relative capacity central value R to be detected by touch-screen control IC module.
6. the method improving capacitive touch screen antistatic property according to claim 5, it is characterized in that: described maximum offset XMAX is that capacitive touch screen is buckled in peak excursion electric capacity object causing capacitive touch screen relative capacity central value R, the setting of maximum offset XMAX sets by when dispatching from the factory, and adjusts according to specific experiment situation.
7. the method improving capacitive touch screen antistatic property according to claim 1, it is characterized in that: whether the sensor Detection capacitance formula touch-screen described in step 2 overturns is measured realization by gravity sensor, gravity sensor measurement due to the acceleration that gravity causes, calculates capacitive touch screen angle of inclination with respect to the horizontal plane when capacitive touch screen overturns.
8. the method improving capacitive touch screen antistatic property according to claim 1, it is characterized in that, the master chip described in step 5 carries out power down to touch-screen control IC module or improves the process of XMAX value comprising: notice touch-screen control IC module is carried out process and comprised the reduction capacitive touch screen sensitivity of capacitive touch screen control IC module or by capacitive touch screen control IC module power-down.
9. the method improving capacitive touch screen antistatic property according to claim 8, is characterized in that, described capacitive touch screen control IC module reduces capacitive touch screen sensitivity adjustment and comprises:
Read capacitive touch screen electric capacity central value R;
And the maximum offset XMAX of capacitance relative capacity central value R when touching capacitive touch screen is adjusted to is greater than BIAS;
Then as XMAX > BIAS, sensitivity of touch screen reduces.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210283861.6A CN102830874B (en) | 2012-08-10 | 2012-08-10 | A kind of method improving capacitive touch screen antistatic property |
| PCT/CN2013/075239 WO2014023115A1 (en) | 2012-08-10 | 2013-05-07 | Method for improving antistatic performance of capacitive touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210283861.6A CN102830874B (en) | 2012-08-10 | 2012-08-10 | A kind of method improving capacitive touch screen antistatic property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102830874A CN102830874A (en) | 2012-12-19 |
| CN102830874B true CN102830874B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210283861.6A Expired - Fee Related CN102830874B (en) | 2012-08-10 | 2012-08-10 | A kind of method improving capacitive touch screen antistatic property |
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| Country | Link |
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| CN (1) | CN102830874B (en) |
| WO (1) | WO2014023115A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830874B (en) * | 2012-08-10 | 2015-12-09 | 广东欧珀移动通信有限公司 | A kind of method improving capacitive touch screen antistatic property |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009181232A (en) * | 2008-01-29 | 2009-08-13 | Tokai Rika Co Ltd | Touch switch |
| CN102622150A (en) * | 2012-02-22 | 2012-08-01 | 广东欧珀移动通信有限公司 | Static eliminating method for touch screen |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5581376B2 (en) * | 2010-03-01 | 2014-08-27 | パナソニック株式会社 | Display device |
| CN102830874B (en) * | 2012-08-10 | 2015-12-09 | 广东欧珀移动通信有限公司 | A kind of method improving capacitive touch screen antistatic property |
-
2012
- 2012-08-10 CN CN201210283861.6A patent/CN102830874B/en not_active Expired - Fee Related
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2013
- 2013-05-07 WO PCT/CN2013/075239 patent/WO2014023115A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009181232A (en) * | 2008-01-29 | 2009-08-13 | Tokai Rika Co Ltd | Touch switch |
| CN102622150A (en) * | 2012-02-22 | 2012-08-01 | 广东欧珀移动通信有限公司 | Static eliminating method for touch screen |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102830874A (en) | 2012-12-19 |
| WO2014023115A1 (en) | 2014-02-13 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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Granted publication date: 20151209 |
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| CF01 | Termination of patent right due to non-payment of annual fee |