CN105610317A - Touch display device and driving circuit thereof - Google Patents
Touch display device and driving circuit thereof Download PDFInfo
- Publication number
- CN105610317A CN105610317A CN201610017066.0A CN201610017066A CN105610317A CN 105610317 A CN105610317 A CN 105610317A CN 201610017066 A CN201610017066 A CN 201610017066A CN 105610317 A CN105610317 A CN 105610317A
- Authority
- CN
- China
- Prior art keywords
- circuit
- touch control
- control display
- display drive
- drive circuit
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/0418—Control or interface arrangements specially adapted for digitisers for error correction or compensation, e.g. based on parallax, calibration or alignment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Electromagnetism (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Position Input By Displaying (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a driving circuit of a touch display device. The driving circuit comprises an input electromagnetic interference suppression circuit, an input rectifier filter circuit, a transformer switching circuit, an output rectifier filter circuit and an output electromagnetic interference suppression circuit which are electrically connected in sequence. The driving circuit of the touch display device also comprises a first Y capacitor electrically connected between a primary coil of the transformer switching circuit and a secondary coil of the transformer switching circuit. The invention also provides the touch display device. According to the touch display device and the driving circuit thereof, an external magnetic field or a mutual inductor cannot influence the change of quantity of electric charges in a touch window by setting a grounding Y capacitor, so that false operations of a touch screen due to external electromagnetic interference are avoided.
Description
Technical field
The present invention relates to touch control display drive circuit, relate in particular to a kind of touch-control that can resist electromagnetic interferenceDisplay and drive circuit thereof.
Background technology
Because the electronic equipment of computer, mobile phone and so on is constantly universal, science, medical treatment, industrial machine, machineTansport equipment, igniter etc. all can produce electricity to the work electronic product with touch controllable function in its vicinityMagnetic disturbance (EMI) is to adopt electromagnetism in order to improve the conventional way of ability of resistance electromagnetic interference of electronic equipmentCompatible (EMC) design. The electromagnetic interference filter circuit of prior art, as shown in Figure 1, wherein, C1,C2 and C4, C5 and Lc are for filtering common mode noise, and C3 and C6 are for filtering differential mode noise. This circuit defeatedGo out end and generally also can meet an electrochemical capacitor C7, when load current is large, also need to connect high frequency capacitance, be used for eliminating load endTo the noise jamming of input. The electromagnetic interference filter circuit of prior art is not also suitable for the electromagnetic wave screen of high standardCover requirement standard, as military specification electronic product, high standard consumption electronic product. Therefore be necessary to propose a kind ofFollow-on touch control display drive circuit overcomes above-mentioned defect.
Summary of the invention
The object of the invention is to, a kind of touch control display drive circuit is provided, it can improve the anti-interference energy of electromagnetismPower.
Another object of the present invention is to, a kind of touch control display is provided, it can improve electromagnetism antijamming capability.
To achieve these goals, an embodiment of the present invention provides a kind of touch control display drive circuit, forIn touch control display, comprise successively electrical connection input electromagnetic interference suppression circuit, input rectifying filter circuit,Transformer change-over circuit, output rectifier and filter and output electromagnetic interference suppression circuit. Described touch control displayDrive circuit also comprises and is electrically connected between the primary coil of described transformer translation circuit and secondary coilOne Y electric capacity.
Preferably, a described Y electric capacity is electrically connected on the low-pressure end of the primary coil of described transformer translation circuitAnd between the low-pressure end of secondary coil.
Preferably, described touch control display drive circuit also comprises that being electrically connected on described output electromagnetic interference suppresses electricityThe 2nd Y electric capacity on road, the other end ground connection of described the 2nd Y electric capacity.
Preferably, described touch control display drive circuit also comprises and is electrically connected on described input rectifying filter circuitThe 3rd Y electric capacity, the other end ground connection of described the 3rd Y electric capacity.
Preferably, the capacitance of a described Y electric capacity, described the 2nd Y electric capacity and described the 3rd Y electric capacity is not allBe greater than 470pF.
Preferably, described touch control display drive circuit also comprise be electrically connected on described input rectifying filter circuit withLow-pass filter circuit between described transformer change-over circuit, for carrying out LPF to input signal.
An embodiment of the present invention also provides a kind of touch control display, comprises that contact panel and touch control display driveCircuit. Described contact panel comprises X working face and Y working face, described touch control display drive circuit electrical connectionIn described Y working face. Described touch control display drive circuit comprises that the input electromagnetic interference of electrical connection successively suppressesCircuit, input rectifying filter circuit, transformer change-over circuit, output rectifier and filter and output electromagnetic interferenceSuppress circuit. Described touch control display drive circuit also comprises and is electrically connected on the elementary of described transformer translation circuitA Y electric capacity between coil and secondary coil.
Beneficial effect of the present invention: the invention provides a kind of touch control display and drive circuit thereof, by arranging threeBar ground connection Y electric capacity, makes external magnetic field or Inductance and Capacitance can not affect the variation of the quantity of electric charge in touch-control form,Avoid touch screen, because of outside electromagnetic interference, misoperation occurs.
In order further to understand feature of the present invention and technology contents, refer to following relevant of the present inventionDescribe in detail and accompanying drawing, but accompanying drawing only provides reference and explanation use, is not used for the present invention to be limited.
Brief description of the drawings
Fig. 1 is the circuit diagram of electromagnetic interference filter circuit in prior art one embodiment;
Fig. 2 is the module map of touch control display drive circuit in an embodiment of the present invention;
Fig. 3 is the circuit diagram of touch control display drive circuit in an embodiment of the present invention;
Fig. 4 is the module map of touch control display drive circuit in another embodiment of the present invention;
Fig. 5 is the module map of touch control display in an embodiment of the present invention.
Detailed description of the invention
Technological means and the effect thereof taked for further setting forth the present invention, below in conjunction with of the present invention preferredEmbodiment and accompanying drawing thereof are described in detail.
Fig. 2 is the module map of touch control display drive circuit 100 in an embodiment of the present invention. Touch control displayDrive circuit 100 can use in touch control display. In the present embodiment, touch control display drive circuit100 comprise that input electromagnetic interference suppression circuit 1, input rectifying filter circuit 2, the transformer of electrical connection turn successivelyChange circuit 3, output rectifier and filter 4, output electromagnetic interference suppression circuit 5 and a Y capacitor C Y1. TheOne Y capacitor C Y1 is electrically connected between the primary coil and secondary coil of transformer translation circuit 3. Touch-control showsDevice drive circuit 100 has further improved its anti-electromagnetic interference capability by setting up a Y capacitor C Y1. ExcellentSelection of land, a Y capacitor C Y1 is electrically connected on the low pressure of the primary coil of the transformer in transformer translation circuit 3Between end and the low-pressure end of secondary coil. In the present embodiment, the low-pressure end of the primary coil of transformer refers toThe lead end that transformer is connected with ground, the low-pressure end of the secondary coil of transformer refers to transformer secondary outputThe lead end that coil is connected with ground.
Please refer to Fig. 3 and Fig. 4, as to further improvement of the present invention, touch control display drive circuit100 also comprise the 2nd Y capacitor C Y2. One end of the 2nd Y capacitor C Y2 is electrically connected on output electromagnetic interference and suppressesThe other end ground connection of circuit 5, the two Y capacitor C Y2. The 2nd Y capacitor C Y2 is for filtering electromagnetic interference signal.
In side circuit application occasion, due to the input signal interference such as noise signal, high fdrequency component of also can adulteratingSignal, for interference such as filter out noise signal, high fdrequency components, touch control display drive circuit 100 also comprises electricityBe connected in the low-pass filter circuit 6 between input rectifying filter circuit 2 and transformer change-over circuit 3. In this realityExecute in mode, low-pass filter circuit 6 can be the RC low-pass filter circuit being made up of resistance in parallel and electric capacity,RC low-pass filter circuit is simple in structure, and strong interference immunity has good low frequency performance, the capacitance-resistance unit of selection standardPart can meet filtering demand.
As to further improvement of the present invention, touch control display drive circuit 100 also comprises the 3rd Y electric capacityCY3. One end of the 3rd Y capacitor C Y3 be electrically connected on input rectifying filter circuit 2 and low-pass filter circuit 6 itBetween, the other end ground connection of the 3rd Y capacitor C Y3. The 3rd Y capacitor C Y3 is equally for filtering electromagnetic interference signal,And then further improve the anti-electromagnetic interference capability of touch control display drive circuit 100.
Between the primary coil of the transformer in transformer translation circuit 3 and secondary coil, be connected in series a Y electric capacityCY1 can form the bang path of common mode interference signal, and interfering signal can be coupled to by a Y capacitor C Y1Transformer secondary output output, when a Y capacitor C Y1 value is less, is coupled to secondary energy just less, because ofThis is in order to improve the anti-electromagnetic interference capability of touch control display drive circuit 100, a Y capacitor C Y1, secondThe capacitance of Y capacitor C Y2 and the 3rd Y capacitor C Y3 is all not more than 470pF.
Fig. 5 is the module map of touch control display in an embodiment of the present invention. In the present embodiment, touch-control is aobviousShow that device 200 comprises touch control display drive circuit 100 and contact panel 300. Contact panel 300 comprises X workMake face and Y working face, wherein X working face refers to the one side for receiving touching signals, Y working face refer toThe one side of LCD contact. Touch control display drive circuit 100 is electrically connected on the Y working face of contact panel 300.Particularly, touch control display drive circuit 100 can comprise the input electromagnetic interference suppression circuit of electrical connection successively1, input rectifying filter circuit 2, transformer change-over circuit 3, output rectifier and filter 4, output electromagnetism are doneDisturb and suppress circuit 5, a Y capacitor C Y1, the 2nd Y capacitor C Y2 and the 3rd Y capacitor C Y3. The one Y electric capacityCY1 is electrically connected between the primary coil and secondary coil of transformer translation circuit 3. The 2nd Y capacitor C Y2'sOne end is electrically connected on the other end ground connection of output electromagnetic interference suppression circuit 5, the two Y capacitor C Y2. The 3rd YOne end of capacitor C Y3 is electrically connected on the other end ground connection of input rectifying filter circuit 2, the three Y capacitor C Y3.Touch control display 200, by increasing by three ground capacities in Y direction, makes external magnetic field or Inductance and CapacitanceCan not affect the variation of the quantity of electric charge in touch-control form, can not make touch-screen occur because of outside electromagnetic interferenceMisoperation.
In an embodiment of the present invention, in order further to improve the electromagnetism antijamming capability of touch control display 200,Its inner pcb board should be avoided the interference digitally and in analog, and encapsulate for chip itselfSituation, avoid the electromagnetic interference between cabling in pcb board. If multi-layer sheet is answered in analog and digitallyRespectively account for one deck, simultaneously to likely causing the holding wire of phase mutual interference will take away the composition method of different layers, thisSample can reduce the electromagnetic interference between holding wire. Disturb strong hardware to connect for signal, cabling interval, walkLine angle degree all it should be noted that interval is unsuitable narrow, and more than being generally designed to 0.2mm, cabling angle should be avoided right angleAnd acute angle, be preferably obtuse angle; For military touch control display 200, there is plural communication in its insideChip, while connection, should also be noted that threshold voltage and the letter of the output signal of a chip between chip and chipWhether number sequential matches with next chip input signal.
In sum, the invention provides a kind of touch control display and drive circuit thereof, by three ground connection Y are setElectric capacity, makes external magnetic field or Inductance and Capacitance can not affect the variation of the quantity of electric charge in touch-control form, avoids touch-controlThere is misoperation because of outside electromagnetic interference in screen.
The above, for the person of ordinary skill of the art, can be according to technical scheme of the present invention andTechnical conceive is made other various corresponding changes and distortion, and all these changes and distortion all should belong to thisThe protection domain of bright claim.
Claims (7)
1. a touch control display drive circuit, for touch control display, comprises the input of electrical connection successivelyElectromagnetic interference suppression circuit, input rectifying filter circuit, transformer change-over circuit, output rectifier and filter andOutput electromagnetic interference suppression circuit, is characterized in that, described touch control display drive circuit also comprises and being electrically connected onA Y electric capacity between the primary coil of described transformer translation circuit and secondary coil.
2. touch control display drive circuit as claimed in claim 1, is characterized in that, a described Y electric capacityBe electrically connected between the low-pressure end of primary coil and the low-pressure end of secondary coil of described transformer translation circuit.
3. touch control display drive circuit as claimed in claim 1, is characterized in that, also comprises and being electrically connected onThe 2nd Y electric capacity of described output electromagnetic interference suppression circuit, the other end ground connection of described the 2nd Y electric capacity.
4. touch control display drive circuit as claimed in claim 1, is characterized in that, also comprises electrical connectionIn the 3rd Y electric capacity of described input rectifying filter circuit, the other end ground connection of described the 3rd Y electric capacity.
5. the touch control display drive circuit as described in claim 1 or 3 or 4 any one, its feature existsIn, the capacitance of a described Y electric capacity, described the 2nd Y electric capacity and described the 3rd Y electric capacity is all not more than 470pF.
6. touch control display drive circuit as claimed in claim 1, is characterized in that, also comprises electrical connectionLow-pass filter circuit between described input rectifying filter circuit and described transformer change-over circuit, for to defeatedEnter signal and carry out LPF.
7. a touch control display, comprises contact panel, and described contact panel comprises X working face and Y workFace, is characterized in that, also comprises the touch control display drive circuit as described in claim 1-6 any one,Be electrically connected on described Y working face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017066.0A CN105610317A (en) | 2016-01-11 | 2016-01-11 | Touch display device and driving circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610017066.0A CN105610317A (en) | 2016-01-11 | 2016-01-11 | Touch display device and driving circuit thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105610317A true CN105610317A (en) | 2016-05-25 |
Family
ID=55989924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610017066.0A Pending CN105610317A (en) | 2016-01-11 | 2016-01-11 | Touch display device and driving circuit thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105610317A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241852A (en) * | 2017-05-04 | 2017-10-10 | 江西赛华科技股份有限公司 | Electromagnetism interference EMI circuit boards |
| CN107360668A (en) * | 2017-07-13 | 2017-11-17 | 深圳市志凌伟业技术股份有限公司 | A kind of anti-electromagnetic interference circuit plate and touch-screen |
| CN111273814A (en) * | 2020-01-17 | 2020-06-12 | 北京硬壳科技有限公司 | Display control unit of touch display, touch display and control method thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070171585A1 (en) * | 2006-01-25 | 2007-07-26 | Delta Electronics, Inc. | Method for suppressing common mode noise |
| JP2009296756A (en) * | 2008-06-04 | 2009-12-17 | Denso Corp | Power conversion device |
| CN201623644U (en) * | 2010-02-11 | 2010-11-03 | 深圳长城开发科技股份有限公司 | High-voltage surge resisting switch power source |
| US7876581B2 (en) * | 2009-02-12 | 2011-01-25 | Samsung Electro-Mechanics Co., Ltd. | Power converter transformer for suppressing conduction EMI and power supply having its transformer |
| CN102044961A (en) * | 2010-12-23 | 2011-05-04 | 深圳市航嘉驰源电气股份有限公司 | Circuit for eliminating noise of switching power supply |
| CN202737546U (en) * | 2012-06-28 | 2013-02-13 | 深圳天珑无线科技有限公司 | RCC (Ringing Choke Converter) charger control circuit and charger used for capacitive touch panel mobile terminal |
| CN103078490A (en) * | 2011-10-25 | 2013-05-01 | 苹果公司 | Noise suppression circuit for power adapter |
| CN203135712U (en) * | 2013-01-09 | 2013-08-14 | 深圳创维数字技术股份有限公司 | Electromagnetic interference suppression circuit |
| CN103270680A (en) * | 2010-11-12 | 2013-08-28 | 摩托罗拉移动有限责任公司 | Device with dynamic impedance circuit, system and operating method thereof |
| CN104518692A (en) * | 2013-10-08 | 2015-04-15 | 冠捷投资有限公司 | Switch mode power source supplier collecting radiative electromagnetic interference and utilizing energy thereof |
-
2016
- 2016-01-11 CN CN201610017066.0A patent/CN105610317A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070171585A1 (en) * | 2006-01-25 | 2007-07-26 | Delta Electronics, Inc. | Method for suppressing common mode noise |
| JP2009296756A (en) * | 2008-06-04 | 2009-12-17 | Denso Corp | Power conversion device |
| US7876581B2 (en) * | 2009-02-12 | 2011-01-25 | Samsung Electro-Mechanics Co., Ltd. | Power converter transformer for suppressing conduction EMI and power supply having its transformer |
| CN201623644U (en) * | 2010-02-11 | 2010-11-03 | 深圳长城开发科技股份有限公司 | High-voltage surge resisting switch power source |
| CN103270680A (en) * | 2010-11-12 | 2013-08-28 | 摩托罗拉移动有限责任公司 | Device with dynamic impedance circuit, system and operating method thereof |
| CN102044961A (en) * | 2010-12-23 | 2011-05-04 | 深圳市航嘉驰源电气股份有限公司 | Circuit for eliminating noise of switching power supply |
| CN103078490A (en) * | 2011-10-25 | 2013-05-01 | 苹果公司 | Noise suppression circuit for power adapter |
| CN202737546U (en) * | 2012-06-28 | 2013-02-13 | 深圳天珑无线科技有限公司 | RCC (Ringing Choke Converter) charger control circuit and charger used for capacitive touch panel mobile terminal |
| CN203135712U (en) * | 2013-01-09 | 2013-08-14 | 深圳创维数字技术股份有限公司 | Electromagnetic interference suppression circuit |
| CN104518692A (en) * | 2013-10-08 | 2015-04-15 | 冠捷投资有限公司 | Switch mode power source supplier collecting radiative electromagnetic interference and utilizing energy thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107241852A (en) * | 2017-05-04 | 2017-10-10 | 江西赛华科技股份有限公司 | Electromagnetism interference EMI circuit boards |
| CN107360668A (en) * | 2017-07-13 | 2017-11-17 | 深圳市志凌伟业技术股份有限公司 | A kind of anti-electromagnetic interference circuit plate and touch-screen |
| CN111273814A (en) * | 2020-01-17 | 2020-06-12 | 北京硬壳科技有限公司 | Display control unit of touch display, touch display and control method thereof |
| CN111273814B (en) * | 2020-01-17 | 2023-06-23 | 北京硬壳科技有限公司 | Display control unit of touch display, touch display and control method thereof |
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Application publication date: 20160525 |
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