CN103633984B - A kind of touch key-press chip and its sensitivity correction method and electronic equipment - Google Patents
A kind of touch key-press chip and its sensitivity correction method and electronic equipment Download PDFInfo
- Publication number
- CN103633984B CN103633984B CN201310687548.3A CN201310687548A CN103633984B CN 103633984 B CN103633984 B CN 103633984B CN 201310687548 A CN201310687548 A CN 201310687548A CN 103633984 B CN103633984 B CN 103633984B
- Authority
- CN
- China
- Prior art keywords
- value
- electric capacity
- control module
- passage
- contact control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Electronic Switches (AREA)
Abstract
The embodiment of the invention discloses touch key-press chip and its sensitivity correction method and electronic equipment, applied to electronic technology field.In the touch key-press chip of the present embodiment, by contact control module according to the difference of the parasitic capacitance of each passage come standard of compensation button activation threshold value, specifically by the offset of button activation threshold value on the basis of the difference conversion between the parasitic capacitance of each passage and external calibration electric capacity, so that after starting to trigger each button, the discharge and recharge time of the electric capacity of button respective channel tries one's best unanimously, that is, reduces the sensitivity of touch key-press and the difference of uniformity.
Description
Technical field
The present invention relates to electronic technology field, more particularly to touch key-press chip and its sensitivity correction method and electronics is set
It is standby.
Background technology
In existing capacitance type touch key chip application, mainly by circuit board（Printed circuit
Board, PCB）It is upper that the induction electrode cabling of multiple passages is set, and these induction electrode cablings are connected to control circuit
Capacitance type touch key is realized, but is the need to ensure that the sensitivity of touch key-press.In different products, each lead on pcb board
Road cabling length has a different, and the panel material that uses of product casing and thickness are also different, when product casing covers band
After the pcb board for having induction electrode cabling, it is also different that the induction electrode institute parasitism on each button passage goes out electric capacity so that electric capacity
The electric capacity of formula touch key-press chip detection has different, so that sensitivity is also changed.
So when product realizes touch key-press using the induction electrode cabling of multiple passages, each touch key-press it is sensitive
Degree and uniformity have obvious difference.
The content of the invention
The embodiment of the present invention provides touch key-press chip and its sensitivity correction method and electronic equipment so that reduction is touched
The sensitivity of button and the difference of uniformity.
The embodiment of the present invention provides a kind of touch key-press chip, including：Induction electrode, the external calibration electric capacity of multiple passages
And contact control module, wherein：
The induction electrode of the multiple passage is connected between the contact control module and ground, the external calibration
Capacitance connection is between the contact control module and ground；
The contact control module, for obtain in the multiple passage the parasitic capacitance of the induction electrode of each passage and
External calibration electric capacity；The difference between the parasitic capacitance of the multiple passage and external calibration electric capacity is determined respectively；Will be described true
The offset that fixed difference is converted into the button activation threshold value of respective channel is compensated to benchmark button activation threshold value, described to mend
Button activation threshold value after repaying is the key induced trigger value of respective channel.
The embodiment of the present invention provides a kind of electronic equipment, including：Touch key-press chip and electronic equipment casing,
The touch key-press chip, including：Induction electrode, external calibration electric capacity and the contact control module of multiple passages,
Wherein：The induction electrode of the multiple passage is connected between the contact control module and ground, the external calibration electricity
Appearance is connected between the contact control module and ground；
The contact control module, for obtain in the multiple passage the parasitic capacitance of the induction electrode of each passage and
External calibration electric capacity；The difference between the parasitic capacitance of the multiple passage and external calibration electric capacity is determined respectively；Will be described true
The offset that fixed difference is converted into the button activation threshold value of respective channel is compensated to benchmark button activation threshold value, described to mend
Button activation threshold value after repaying is the key induced trigger value of respective channel.
The embodiment of the present invention provides a kind of sensitivity correction method of touch key-press chip, applied to touch key-press chip
In, the touch key-press chip includes：Induction electrode, external calibration electric capacity and the contact control module of multiple passages are described more
The induction electrode of individual passage is connected between the contact control module and ground, and the external calibration capacitance connection is described
Between contact control module and ground；
Methods described includes：
The contact control module obtains the parasitic capacitance of the induction electrode of each passage and outside in the multiple passage
Calibration capacitance；
The contact control module determines the difference between the parasitic capacitance of the multiple passage and external calibration electric capacity respectively
Value；
The difference of the determination is converted into the offset of the button activation threshold value of respective channel by the contact control module
Benchmark button activation threshold value is compensated, the button activation threshold value after the compensation is the key induced triggering of respective channel
Value.
In the touch key-press chip of the present embodiment, pass through difference of the contact control module according to the parasitic capacitance of each passage
It is different come standard of compensation button activation threshold value, specifically by the difference between the parasitic capacitance of each passage and external calibration electric capacity turn
Turn to the offset of benchmark button activation threshold value so that after starting to trigger each button, the electric capacity of button respective channel fills
Discharge time tries one's best unanimously, that is, reduces the sensitivity of touch key-press and the difference of uniformity.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is a kind of circuit diagram of touch key-press chip provided in an embodiment of the present invention；
Fig. 2 be prior art touch key-press chip in two passages button activation threshold value schematic diagram；
Fig. 3 is the schematic diagram of the button activation threshold value of two passages in touch key-press chip in the embodiment of the present invention；
Fig. 4 is a kind of flow chart of the sensitivity correction method of touch key-press chip provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
A kind of touch key-press chip of offer of the embodiment of the present invention, mainly self-capacitance touch key-press chip, can be replaced
Touch key-press on touch key-press and electromagnetic oven panel on traditional mechanical key, such as microwave furnace panel etc., wherein, from electricity
Appearance formula touch key-press chip is mainly the detection for realizing that button is touched by detecting the electric capacity between induction electrode and ground.
In the present embodiment touch key-press chip structural representation as shown in figure 1, including：The induction electrode of multiple passages,
External calibration electric capacity Cv and contact control module 10, not shown induction electrode in Fig. 1, produced by merely illustrating induction electrode
Parasitic capacitance Cr, wherein：
The induction electrode of multiple passages is connected between contact control module 10 and ground, the sensing of so each passage
Parasitic capacitance Cr is formed between electrode and ground；External calibration electric capacity Cv is connected between contact control module 10 and ground；
Contact control module 10, parasitic capacitance Cr and outside for obtaining the induction electrode of each passage in multiple passages
Calibration capacitance Cv；The difference between the parasitic capacitance Cr of multiple passages and external calibration electric capacity Cv is determined respectively；By the difference of determination
Value is converted into the offset of the button activation threshold value of respective channel and benchmark button activation threshold value compensated, pressing after compensation
Key activation threshold value is the key induced trigger value of respective channel.
Wherein, the difference that contact control module 10 is determined is the difference between two electric capacity, and button activation threshold value is main
It is magnitude of voltage, when the difference of determination to be converted to the offset of button activation threshold value, it is necessary to be converted to the form of voltage, then
It could compensate；In specific compensate, contact control module 10 can obtain benchmark button activation threshold value with each passage
Offset be added and obtain button activation threshold value after the step-length of respective channel；And said reference button activation threshold value refers to do not entering
External calibration electric capacity Cv magnitude of voltage Vv or the magnitude of voltage Vv conversion values, can specifically pass through contact control module before row compensation
10 samplings are obtained.
And method of the contact control module 10 when obtaining parasitic capacitance with external calibration electric capacity is similar, can specifically pass through
Approach by inchmeal（Such as dichotomy Approach by inchmeal）Method obtain, specifically, contact control module 10 can constantly configure parasitism
The value of electric capacity is the value in presetting range, it is then determined that whether the value of the parasitic capacitance of configuration meets the induction electrode of respective channel
Property value, if met, it is determined that the value of the parasitic capacitance of configuration is posted for the induction electrode of the respective channel of above-mentioned acquisition
Raw electric capacity Cr.Wherein the property value of induction electrode can be by the charge and discharge telecommunications of the electric capacity to being formed between the induction electrode and ground
Cease to obtain.
And it is the value in presetting range that contact control module 10, which can constantly configure the value of external calibration electric capacity, if configuration
The value of external calibration electric capacity meet the property value of external calibration electric capacity, it is determined that the value of the external calibration electric capacity of configuration obtains to be above-mentioned
The external calibration electric capacity Cv taken.The property value of external calibration electric capacity can by the charge and discharge power information to outside calibration capacitance come
Arrive.
It is appreciated that because the cabling of the induction electrode in each passage is different so that the induction electrode production of each passage
Raw parasitic capacitance Cr is different；When user touches the button of the passage, the inductance capacitance outside parasitic capacitance Cr can be produced
Cf, for multiple passages, the inductance capacitance Cf that correspondence is produced during user's touch key-press is basically identical, therefore each logical
Electric capacity of the button in road when being touched is Cc=Cf+Cr, and now the electric capacity of each passage is different.The button of one of passage
Refer to after the touch key-press chip application of the present embodiment is in electronic product, outside the corresponding electronic product of induction electrode of the passage
Position on shell, is the button of the passage；And the electric capacity Cc differences of each passage illustrate the induction electrode of the passage in list
Discharge and recharge transfer charge is different in the time of position, that is, the magnitude of voltage Vc of the induction electrode of each passage different；And said external
Calibration capacitance Cv is typically constant, i.e. discharge and recharge transfer charges of the external calibration electric capacity Cv in the unit interval is
Fixed.
Then when user touches the button of some passage, electricity of the meeting of contact control module 10 to the induction electrode of the passage
Pressure value Vc is sampled, and to outside calibration capacitance Cv magnitude of voltage Vv, and according to the voltage of certain tactful and above-mentioned collection
Value Vc and Vv, it is determined whether need to trigger the execute instruction corresponding to the button, generally, if magnitude of voltage Vc is more than Vv
When, then can trigger the execute instruction of the button, wherein Vv be on the basis of button activation threshold value.Then above-mentioned contact control module 10,
It is additionally operable to when the button of a certain passage is touched, by the button activation threshold value after compensation, the induction electrode institute with respective channel
The magnitude of voltage for producing electric capacity is that above-mentioned Vc is compared, and determines whether the button of the passage is triggered.
Further, the sensitivity response of button is when button is being touched, and the electric capacity Cc produced by respective channel is in list
The speed of discharge and recharge in the time of position, because the cabling of the induction electrode of each passage disposes difference, therefore the button of each passage
Sensitivity it is inconsistent.Needed in the present embodiment by contact control module 10 according to the difference of the parasitic capacitance of each passage come
Standard of compensation button activation threshold value so that after starting to trigger each button, the discharge and recharge time of the electric capacity of button respective channel
It is as far as possible consistent, that is, reduce the sensitivity of touch key-press and the difference of uniformity.
For example, with reference to shown in Fig. 2, when not compensated to button activation threshold value, when touching the button of passage 0 and 1,
The magnitude of voltage Vc of the induction electrode of passage 0 is 800, and the magnitude of voltage of the induction electrode of passage 1 is 600, and the case of two passages
Activation threshold value is all 480, and the magnitude of voltage of the induction electrode of so each passage can start triggering correspondence when higher than 480
The execute instruction of button.But the button of passage 0 is when starting triggering, the speed of the capacitor charge and discharge of the passage 0 is slower, then presses
Key triggers the successful time also relatively slowly, i.e. the sensitivity of the button of passage 0 does not have the sensitivity of the button of passage 1 high.
With reference to shown in Fig. 3, when the touch key-press chip using the embodiment of the present invention, contact control module 10 therein can
Triggered with the button that the parasitic capacitance of passage 0 and 1 is accordingly converted to passage 0 and 1 with the difference of external calibration electric capacity respectively
The offset of threshold value, respectively 160 and 0, then the button activation threshold value of the passage 0 and 1 after compensating is respectively 640 and 480.So
When the magnitude of voltage of the induction electrode of passage 0 and 1 is respectively higher than 640 and 480, it can start to trigger the execute instruction of correspondence button,
And the button of two passages, after triggering is started, the speed of capacitor charge and discharge is identical, then the button triggering successful time is also identical,
I.e. the sensitivity of the button of passage 0 is consistent with the sensitivity of the button of passage 1.
The embodiment of the present invention also provides a kind of electronic equipment, including touch key-press chip and electronic equipment casing, the touch
Button chip is above-mentioned touch key-press chip, herein without repeating, and the touch key-press chip is corresponding with electronic equipment casing
Equipment, then in touch key-press chip the corresponding electronic equipment casing of induction electrode cabling of a certain passage be designated as the passage by
Key.
The embodiment of the present invention also provides a kind of sensitivity correction method of touch key-press chip, is mainly used in above-mentioned Fig. 1
Shown in touch key-press chip in, the method for the present embodiment is that the contact control module 10 that touch key-press chip includes is held
Capable method, flow chart as shown in figure 4, including：
Step 101, the parasitic capacitance and external calibration electric capacity of the induction electrode of each passage in multiple passages are obtained.Touch
Control module 10 is when obtaining parasitic capacitance, and it is the value in presetting range that can specifically configure the value of parasitic capacitance；If configuration
Parasitic capacitance value meet respective channel induction electrode property value, it is determined that configuration parasitic capacitance value for obtain pair
Answer the parasitic capacitance of the induction electrode of passage.When obtaining external calibration electric capacity, the value that can first configure external calibration electric capacity is
Value in presetting range, if the value of the external calibration electric capacity of configuration meets the property value of external calibration electric capacity, it is determined that configuration
The value of external calibration electric capacity is the external calibration electric capacity obtained.
Step 102, between the parasitic capacitance and external calibration electric capacity of the multiple passages obtained respectively in determination step 101
Difference.
Step 103, the difference determined in step 102 is converted into the offset of button activation threshold value of respective channel to base
Quasi- button activation threshold value is compensated, and is specifically the offset for obtaining benchmark button activation threshold value and respective channel in compensation
The button activation threshold value after the compensation for obtaining the passage is added, wherein the button activation threshold value after compensation is the button of respective channel
The trigger value of sensing.
Then when the button of passage is touched, contact control module 10 is understood the button activation threshold value of the passage after compensation,
Magnitude of voltage with the induction electrode of respective channel is that above-mentioned Vc is compared, and determines whether the button of the passage is triggered, if
It is triggered, then contact control module 10 can perform the execute instruction of the button.
It can be seen that, in the touch key-press chip of the present embodiment, pass through parasitism of the contact control module 10 according to each passage
The difference of electric capacity carrys out standard of compensation button activation threshold value, specifically by between the parasitic capacitance of each passage and external calibration electric capacity
Difference conversion on the basis of button activation threshold value offset so that when start trigger each button after, button respective channel
The discharge and recharge time of electric capacity tries one's best unanimously, that is, reduces the sensitivity of touch key-press and the difference of uniformity.
The touch key-press chip and its sensitivity correction method and electronic equipment provided above the embodiment of the present invention enters
Go and be discussed in detail, specific case used herein is set forth to the principle and embodiment of the present invention, and the above is implemented
The explanation of example is only intended to the method and its core concept for helping to understand the present invention；Simultaneously for the general technology people of this area
Member, according to the thought of the present invention, will change in specific embodiments and applications, in summary, this explanation
Book content should not be construed as limiting the invention.
Claims (7)
1. a kind of touch key-press chip, for reducing the sensitivity of touch key-press and the difference of uniformity, it is characterised in that bag
Include：Induction electrode, external calibration electric capacity and the contact control module of multiple passages, wherein：
The induction electrode of the multiple passage is connected between the contact control module and ground, the external calibration electric capacity
It is connected between the contact control module and ground；
The contact control module, for obtaining the parasitic capacitance of the induction electrode of each passage and outside in the multiple passage
Calibration capacitance；The difference between the parasitic capacitance of the multiple passage and external calibration electric capacity is determined respectively；By the determination
The offset that difference is converted into the button activation threshold value of respective channel is compensated to benchmark button activation threshold value, after the compensation
Button activation threshold value be respective channel key induced trigger value, wherein, contact control module determine difference be two
Difference between electric capacity, button activation threshold value is magnitude of voltage, when the offset that the difference of determination is converted to button activation threshold value
When, it is necessary to the difference of determination to be converted to the form of magnitude of voltage by the form of capacitive differential, then could compensate；
When the button of the passage is touched, the contact control module is by the button firing level of the passage after compensation
Value, is compared with the magnitude of voltage of the induction electrode of respective channel, determines whether the button of the passage is triggered.
2. touch key-press chip as claimed in claim 1, it is characterised in that the contact control module, specifically for configuration
The value of the parasitic capacitance is the value in presetting range, if the value of the parasitic capacitance of the configuration meets the sensing of respective channel
The property value of electrode, determines that the value of the parasitic capacitance of the configuration is electric for the parasitism of the induction electrode of the respective channel of the acquisition
Hold；
The contact control module, is the value in presetting range specifically for configuring the value of external calibration electric capacity, if described match somebody with somebody
The value for the external calibration electric capacity put meets the property value of the external calibration electric capacity, determines the external calibration electric capacity of the configuration
It is worth the external calibration electric capacity for the acquisition.
3. a kind of electronic equipment, for reducing the sensitivity of touch key-press and the difference of uniformity, it is characterised in that including：Touch
Button chip and electronic equipment casing are touched,
The touch key-press chip, including：Induction electrode, external calibration electric capacity and the contact control module of multiple passages, wherein：
The induction electrode of the multiple passage is connected between the contact control module and ground, the external calibration capacitance connection
Between the contact control module and ground；
The contact control module, for obtaining the parasitic capacitance of the induction electrode of each passage and outside in the multiple passage
Calibration capacitance；The difference between the parasitic capacitance of the multiple passage and external calibration electric capacity is determined respectively；By the determination
The offset that difference is converted into the button activation threshold value of respective channel is compensated to benchmark button activation threshold value, after the compensation
Button activation threshold value be respective channel key induced trigger value, wherein, contact control module determine difference be two
Difference between electric capacity, button activation threshold value is magnitude of voltage, when the offset that the difference of determination is converted to button activation threshold value
When, it is necessary to the difference of determination to be converted to the form of magnitude of voltage by the form of capacitive differential, then could compensate；
When the button of the passage is touched, the contact control module is by the button firing level of the passage after compensation
Value, is compared with the magnitude of voltage of the induction electrode of respective channel, determines whether the button of the passage is triggered.
4. electronic equipment as claimed in claim 3, it is characterised in that
The contact control module, is the value in presetting range specifically for configuring the value of the parasitic capacitance, if described match somebody with somebody
The value for the parasitic capacitance put meets the property value of the induction electrode of respective channel, and the value for determining the parasitic capacitance of the configuration is institute
State the parasitic capacitance of the induction electrode of the respective channel of acquisition；
The contact control module, is the value in presetting range specifically for configuring the value of external calibration electric capacity, if described match somebody with somebody
The value for the external calibration electric capacity put meets the property value of the external calibration electric capacity, determines the external calibration electric capacity of the configuration
It is worth the external calibration electric capacity for the acquisition.
5. a kind of sensitivity correction method of touch key-press chip, for reducing the sensitivity of touch key-press and the difference of uniformity
It is different, it is characterised in that applied in touch key-press chip, the touch key-press chip includes：It is the induction electrode of multiple passages, outer
Portion's calibration capacitance and contact control module, the induction electrode of the multiple passage are connected to the contact control module and ground
Between, the external calibration capacitance connection is between the contact control module and ground；
Methods described includes：
The contact control module obtains the parasitic capacitance of the induction electrode of each passage and external calibration in the multiple passage
Electric capacity；
The contact control module determines the difference between the parasitic capacitance of the multiple passage and external calibration electric capacity respectively；
The difference of the determination is converted into the offset of the button activation threshold value of respective channel to base by the contact control module
Quasi- button activation threshold value is compensated, and the button activation threshold value after the compensation is the key induced trigger value of respective channel,
Wherein, the difference of the determination is the difference between two electric capacity, and button activation threshold value is magnitude of voltage, is turned when by the difference of determination
, it is necessary to which the difference of determination to be converted to the shape of magnitude of voltage by the form of capacitive differential when being changed to the offset of button activation threshold value
Formula, then could be compensated；
When the button of the passage is touched, contact control module by the button activation threshold value of the passage after compensation, with
The magnitude of voltage of the induction electrode of respective channel is compared, and determines whether the button of the passage is triggered.
6. method as claimed in claim 5, it is characterised in that the contact control module obtains each in the multiple passage
The parasitic capacitance of the induction electrode of passage, is specifically included：
It is the value in presetting range to configure the value of the parasitic capacitance；
If the value of the parasitic capacitance of the configuration meets the property value of the induction electrode of respective channel, posting for the configuration is determined
The parasitic capacitance of induction electrode of the value of raw electric capacity for the respective channel of the acquisition.
7. method as claimed in claim 5, it is characterised in that the contact control module obtains external calibration electric capacity, specifically
Including：
It is the value in presetting range to configure the value of external calibration electric capacity；
If the value of the external calibration electric capacity of the configuration meets the property value of the external calibration electric capacity, the configuration is determined
The value of external calibration electric capacity is the external calibration electric capacity of the acquisition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687548.3A CN103633984B (en) | 2013-12-13 | 2013-12-13 | A kind of touch key-press chip and its sensitivity correction method and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310687548.3A CN103633984B (en) | 2013-12-13 | 2013-12-13 | A kind of touch key-press chip and its sensitivity correction method and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103633984A CN103633984A (en) | 2014-03-12 |
| CN103633984B true CN103633984B (en) | 2017-09-26 |
Family
ID=50214679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310687548.3A Active CN103633984B (en) | 2013-12-13 | 2013-12-13 | A kind of touch key-press chip and its sensitivity correction method and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103633984B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107508956A (en) * | 2017-08-23 | 2017-12-22 | 重庆哈迪斯科技有限公司 | A kind of mobile phone key sensibility testing arrangement |
| CN109984579B (en) * | 2017-12-29 | 2022-08-02 | 浙江绍兴苏泊尔生活电器有限公司 | Processing method and device of touch key and cooking appliance |
| CN109039321A (en) * | 2018-10-15 | 2018-12-18 | 湖南品腾电子科技有限公司 | A kind of touch button device and sensitivity automatic adjusting method |
| KR102302879B1 (en) * | 2019-05-22 | 2021-09-17 | 어보브반도체 주식회사 | Apparatus and method for automatically calibrating capacitance per channel |
| CN110460326B (en) * | 2019-09-06 | 2023-10-13 | 苏州国芯科技股份有限公司 | Touch key interface circuit and touch key monitoring system |
| CN111352534B (en) * | 2020-03-13 | 2021-05-28 | 珠海格力电器股份有限公司 | Touch key touch threshold correction method, wire controller, electric appliance and computer readable storage medium |
| CN117220659B (en) * | 2023-09-06 | 2024-05-17 | 深圳市航顺芯片技术研发有限公司 | Touch key detection method, circuit and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375625A (en) * | 2010-08-10 | 2012-03-14 | 义隆电子股份有限公司 | Sensing circuit and method for capacitance type touch control panel |
| CN102486691A (en) * | 2010-12-01 | 2012-06-06 | 台达电子工业股份有限公司 | Touch control device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9310916B2 (en) * | 2011-01-14 | 2016-04-12 | Apple Inc. | Display to touch crosstalk compensation |
| CN102622142A (en) * | 2011-01-27 | 2012-08-01 | 丁行波 | Induction quantity compensation method applied to capacitance touch control board |
-
2013
- 2013-12-13 CN CN201310687548.3A patent/CN103633984B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102375625A (en) * | 2010-08-10 | 2012-03-14 | 义隆电子股份有限公司 | Sensing circuit and method for capacitance type touch control panel |
| CN102486691A (en) * | 2010-12-01 | 2012-06-06 | 台达电子工业股份有限公司 | Touch control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103633984A (en) | 2014-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103633984B (en) | A kind of touch key-press chip and its sensitivity correction method and electronic equipment | |
| CN103279244B (en) | A kind of capacitive touch screen | |
| CN204808288U (en) | Forced induction touch -sensitive screen and display device | |
| CN100550634C (en) | A kind of control board transducer and display device | |
| CN102736803B (en) | Capacitive touch pad for improving environmental influence and sensing method thereof | |
| CN104423688B (en) | Induction element | |
| SI1586164T1 (en) | Circuit arrangement for a capacitive proximity switch | |
| CN106817447A (en) | A kind of mobile terminal | |
| CN105867678A (en) | Full-transparent touch screen with fingerprint identification function | |
| CN109039321A (en) | A kind of touch button device and sensitivity automatic adjusting method | |
| CN103309500A (en) | Sensing structure of touch panel | |
| CN109656428A (en) | Touch panel | |
| CN103513839B (en) | Touch-and-play input device and operation method | |
| CN209198902U (en) | Metal touch module and electric appliance | |
| CN103823598A (en) | Touch sensing circuit and touch sensing method | |
| CN101907961B (en) | Realizing method of capacitance type inductive key, inductive key circuit and keyboard | |
| CN103281043A (en) | Terminal volume adjusting device and adjusting method | |
| CN204719697U (en) | Multiplex touch control electronic installation | |
| CN201467099U (en) | Capacitive sensing key circuit and keyboard | |
| CN103685656A (en) | Capacitive touch control screen mobile phone | |
| TWI470527B (en) | An integrated circuit that achieves touch capacitance sensing with charge sharing | |
| CN106033274B (en) | Multiplex touch control electronic device | |
| CN209216073U (en) | A kind of self-capacitance touch screen and electronic equipment | |
| CN206224416U (en) | Pressure-detecting device and electric terminal | |
| CN105446534B (en) | A kind of pressure sensor device and the terminal device with the pressure sensor device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |