CN109920382A - Electrophoresis electronic paper driving device - Google Patents
Electrophoresis electronic paper driving device Download PDFInfo
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- CN109920382A CN109920382A CN201910269751.6A CN201910269751A CN109920382A CN 109920382 A CN109920382 A CN 109920382A CN 201910269751 A CN201910269751 A CN 201910269751A CN 109920382 A CN109920382 A CN 109920382A
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- 238000001962 electrophoresis Methods 0.000 title abstract 2
- 239000013078 crystal Substances 0.000 claims abstract description 26
- 239000003990 capacitor Substances 0.000 claims description 89
- 239000004065 semiconductor Substances 0.000 claims description 16
- 101000941170 Homo sapiens U6 snRNA phosphodiesterase 1 Proteins 0.000 claims description 12
- 102100031314 U6 snRNA phosphodiesterase 1 Human genes 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 4
- 230000010355 oscillation Effects 0.000 abstract description 2
- 230000003116 impacting effect Effects 0.000 abstract 1
- 230000000452 restraining effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000035939 shock Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention discloses an electrophoresis electronic paper driving device, which consists of a main control circuit, a communication interface circuit, a display interface, an interface driving circuit, a storage circuit and a power supply circuit, wherein the communication interface is respectively and electrically connected with the power supply circuit and the input end of the main control circuit, the output end of the main control circuit is electrically connected with the display interface through the interface driving circuit, a double-crystal vibration circuit is arranged in the main control circuit, the communication interface circuit can effectively prevent external surge current from impacting the driving device, the power supply circuit has the function of restraining self-excited oscillation and can prevent the driving device from voltage inversion after power failure, the interface driving circuit can provide stable working voltage and current for an electronic paper display, remove higher harmonics of a power supply, stabilize and unify particle states in the electronic paper display, and effectively avoid ghost and residual shadow phenomena.
Description
Technical field
The present invention relates to a kind of electronic paper display driving equipment, especially a kind of electrophoretic electronic paper driving device.
Background technique
Electrophoretic electronic paper is to adjust depth/lighter colored particles in microcapsules by control voltage directed movement occurs to generate gray scale
Variation, to achieve the effect that show multi-stage grey scale, but since display effect is determined by the distribution of particle, and molecule
Between the factors such as active force, electric field resistance the state of particle can be made to change, to electronics paper driver output driving waveform
Stability requirement is high, but in reality, and the drive waveforms anti-interference ability that electronics paper driver generates is low, it is easy to by electricity
The influence of magnetic, surge will cause the graininess disunity in electric paper display, cause to show that quality is deteriorated, or even occur
Phenomena such as ghost, ghost.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of strong antijamming capability, the high electrophoretic electronic of stability
Paper driving device.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of electrophoretic electronic paper driving device, by governor circuit, communication interface circuit, display interface, interface driving circuit,
The storage circuit being electrically connected with the governor circuit and the power supply circuit for providing working power for foregoing circuit form, described logical
Communication interface is electrically connected with the input terminal of the power supply circuit and governor circuit respectively, and the output end of the governor circuit passes through institute
Interface driving circuit is stated to be electrically connected with the display interface.
The governor circuit includes control chip U1, and the control chip U1 is connected with condition indication circuit and twin crystal vibration electricity
Road.
The communication interface circuit includes switching chip U4, communication interface USB1, crystal oscillator Y3, resistance R8, capacitor C21, electricity
Hold C22, capacitor C31 and capacitor C32, the 1 pin ground connection of the switching chip U4；The 2 and 3 pins difference of the switching chip U4
Connect 68 and 69 pins of the control chip U1；4 pins of the switching chip U4 are grounded by the capacitor C31；Described turn
5 pins for meeting chip U4 connect 2 pins of the communication interface USB1；6 pins of the switching chip U4 divide two-way, pass through all the way
The resistance R8 connects 3.3V voltage, and another way connects 3 pins of the communication interface USB1；7 pins point of the switching chip U4
Two-way is grounded by the capacitor C21 all the way, and another way passes sequentially through the crystal oscillator Y3 and capacitor C22 ground connection；The switching core
8 pins of piece U4 connect the node of the crystal oscillator Y3 Yu the capacitor C22；16 pins of the switching chip U4 divide two-way, all the way
3.3V voltage is connect, another way is grounded by the capacitor C32；5 pins of the communication interface USB1 are grounded.
The power supply circuit includes control button K2, voltage-stablizer U2, capacitor C17, capacitor C18, capacitor C19 and capacitor C20；
3 and 4 pins of the control button K2 connect 1 pin of the communication interface USB1,2 pins point three of the control button K2
Road is grounded by the capacitor C20 all the way, and the second tunnel is grounded by the capacitor C18, and third road connects the 3 of the voltage-stablizer U2
Pin；1 pin of the voltage-stablizer U2 is grounded；Three tunnels of 2 pins of the voltage-stablizer U2 point, are connect by the capacitor C19 all the way
Ground, another way are grounded by the capacitor C17, and third road connects 4 pins of the voltage-stablizer U2.
The interface driving circuit includes metal-oxide-semiconductor Q1, inductance L1, diode D1, diode D2, diode D3, capacitor
C10, capacitor C11, capacitor C12, resistance R1 and resistance R2；Two-way is divided in the pole G of the metal-oxide-semiconductor Q1, connects the display interface all the way
2 pins, another way pass through the resistance R1 be grounded；The pole S of the metal-oxide-semiconductor Q1 is grounded by the resistance R2；The metal-oxide-semiconductor
Two-way is divided after passing through the inductance L1 in the pole D of Q1, connects 3.3V voltage all the way, and another way is grounded by the capacitor C11；Described two
The anode of pole pipe D3 connects the pole D of the metal-oxide-semiconductor Q1 and the node of the inductance L1, and cathode divides two-way, connects the display all the way and connects
21 pins of mouth, another way pass through the capacitor C10 and are grounded；The anode of the diode D1 connects the 23 of the display interface and draws
Foot, cathode divide two-way, connect the node of the diode D3 Yu the inductance L1 by the capacitor C12 all the way, and another way passes through
The diode D2 ground connection.
The beneficial effects of the present invention are: the present invention is by governor circuit, communication interface circuit, display interface, interface driver electricity
Road, storage circuit and power supply circuit form, and double crystal oscillating circuits are provided in governor circuit, and communication interface circuit can effectively prevent outer
Boundary's inrush current shock driving device, power supply circuit, which has, inhibits self-oscillation function, can prevent driving device from going out after a loss of power
Existing voltage inversion, interface driving circuit can provide stable operating voltage and electric current for electric paper display, remove the height of power supply
Subharmonic allows the graininess in electric paper display to stablize unification, is effectively prevented from the appearance of ghost, ghost phenomena.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is circuit block diagram of the invention；
Fig. 2 is circuit diagram first part of the invention；
Fig. 3 is circuit diagram second part of the invention；
Fig. 4 is circuit diagram Part III of the invention；
Fig. 5 is circuit diagram Part IV of the invention；
Fig. 6 is circuit diagram Part V of the invention.
Specific embodiment
Referring to Fig.1, a kind of electrophoretic electronic paper driving device, by governor circuit, communication interface circuit, display interface, interface
Driving circuit, the storage circuit being electrically connected with the governor circuit and the power supply circuit group of working power is provided for foregoing circuit
At, the communication interface is electrically connected with the input terminal of the power supply circuit and governor circuit respectively, the governor circuit it is defeated
Outlet is electrically connected that (Fig. 2 to Fig. 6 is the complete electricity of the present embodiment altogether by the interface driving circuit with the display interface
Complete circuit diagram is divided into five parts Fig. 2 to Fig. 6, the identical terminal of figure label for the ease of observation by road schematic diagram
Indicate electrical connection).
Referring to Fig. 2, the governor circuit includes control chip U1, the model of the control chip U1
STM32F103VBT6 is provided with reset circuit in governor circuit, is mainly made of capacitor, resistance and reset key RES, when pressing
When the next key RES, then power supply controls chip U1 and resets to capacitor charging.
Condition indication circuit and double crystal oscillating circuits, the condition indication circuit are connected with referring to Fig. 3, the control chip U1
It is mainly made of light emitting diode, for prompting the working condition of entire driving device, double crystal oscillating circuits include crystal oscillator
Y12, crystal oscillator Y21, capacitor C1, capacitor C2, capacitor C14 and capacitor C15；One end of the capacitor C1 is grounded, and the other end divides two-way,
12 pins of the control chip U1 are connect all the way, and another way meets 13 pins of the control chip U1, institute by the crystal oscillator Y12
State one end ground connection of capacitor C2,13 pins of another termination control chip U1 and the node of the crystal oscillator Y12；The capacitor
One end of C15 is grounded, and the other end divides two-way, connects 8 pins of the control chip U1 all the way, and another way passes through the crystal oscillator Y21
Connect it is described control chip U1 9 pins, the capacitor C14 one end ground connection, it is another termination it is described control chip U1 9 pins with
The node of the crystal oscillator Y21；The crystal oscillator frequency of the crystal oscillator Y12 is 8M, is mainly used for providing 72,000,000 most for main control chip U1
The crystal oscillator frequency of high working frequency and higher output frequency, the crystal oscillator Y21 is 32.768K, is mainly master control core
Piece U1 provides internal operating frequencies, and output frequency is sufficiently stable.
Referring to Fig. 4, the communication interface circuit includes switching chip U4, communication interface USB1, crystal oscillator Y3, resistance R8, electricity
Hold C21, capacitor C22, capacitor C31 and capacitor C32, the 1 pin ground connection of the switching chip U4；The 2 and 3 of the switching chip U4
Pin connects 68 and 69 pins of the control chip U1 respectively；4 pins of the switching chip U4 are connect by the capacitor C31
Ground；5 pins of the switching chip U4 connect 2 pins of the communication interface USB1；6 pins of the switching chip U4 are divided to two
Road, connects 3.3V voltage by the resistance R8 all the way, and another way connects 3 pins of the communication interface USB1；The switching chip
7 pins of U4 divide two-way, are grounded all the way by the capacitor C21, another way passes sequentially through the crystal oscillator Y3 and capacitor C22 connects
Ground；8 pins of the switching chip U4 connect the node of the crystal oscillator Y3 Yu the capacitor C22；Draw the 16 of the switching chip U4
Foot divides two-way, connects 3.3V voltage all the way, and another way is grounded by the capacitor C32；5 pins of the communication interface USB1 connect
Ground；The model CH340G of the switching chip U4, is able to achieve USB and turns serial ports, as between host computer and main control chip U1
Buffer is first temporarily stored in data in switching chip U4, then to control chip U1 when host computer sends data to single-chip microcontroller
Working frequency to control chip U1 transmit data；The crystal oscillator Y3, capacitor C21 and capacitor C22 composition capacitance three-point type oscillation electricity
The waveform on road, output is sine wave, can effectively prevent inrush current shock communication interface circuit.
The power supply circuit includes control button K2, voltage-stablizer U2, capacitor C17, capacitor C18, capacitor C19 and capacitor C20；
3 and 4 pins of the control button K2 connect 1 pin of the communication interface USB1,2 pins point three of the control button K2
Road is grounded by the capacitor C20 all the way, and the second tunnel is grounded by the capacitor C18, and third road connects the 3 of the voltage-stablizer U2
Pin；1 pin of the voltage-stablizer U2 is grounded；Three tunnels of 2 pins of the voltage-stablizer U2 point, are connect by the capacitor C19 all the way
Ground, another way are grounded by the capacitor C17, and third road connects 4 pins of the voltage-stablizer U2；The power supply circuit is entire drives
Dynamic device circuit provides stable 5V and 3.3V voltage, and the model AMS1117-3.3 of the voltage-stablizer U 2 is output voltage
The positive low dropout voltage regulator of 3.3V, the capacitor C19 and capacitor C17 are output filter capacitors, and effect is to inhibit self-oscillation,
It prevents output voltage from waveform occur, the power supply circuit is allowed to provide more stable operating voltage；The capacitor C18 and capacitor
C20 two is protection capacitor, prevents driving device from occurring voltage inversion after a loss of power.
Referring to Fig. 5, the interface driving circuit includes metal-oxide-semiconductor Q1, inductance L1, diode D1, diode D2, diode
D3, capacitor C10, capacitor C11, capacitor C12, resistance R1 and resistance R2；Two-way is divided in the pole G of the metal-oxide-semiconductor Q1, connects all the way described aobvious
Show 2 pins of interface, another way is grounded by the resistance R1；The pole S of the metal-oxide-semiconductor Q1 is grounded by the resistance R2；Institute
The pole D of metal-oxide-semiconductor Q1 is stated by dividing two-way after the inductance L1, connects 3.3V voltage all the way, another way is connect by the capacitor C11
Ground；The anode of the diode D3 connects the pole D of the metal-oxide-semiconductor Q1 and the node of the inductance L1, and cathode divides two-way, meets institute all the way
21 pins of display interface are stated, another way is grounded by the capacitor C10；The anode of the diode D1 connects the display interface
23 pins, cathode divides two-way, connects the node of the diode D3 Yu the inductance L1 by the capacitor C12 all the way, another
Road is grounded by the diode D2；The major function of the interface driving circuit is that stable work is provided for electric paper display
Make voltage and current, realizes control driving MOSFET gate circuit, the diode D1, diode D2 and diode D3 play switch and protect
The effect of shield can guarantee that display can work normally under most of occasion under limiting voltage；The metal-oxide-semiconductor Q1 is main
Effect is to realize switch and amplification, and the resistance R1 is to provide bias voltage for the metal-oxide-semiconductor Q1；The capacitor C10 and C11 is
Filter capacitor guarantees the quality of Electronic Paper input voltage for filtering out high-frequency noise；The capacitor C12 is storage capacitor, described
Inductance L1 is used to remove the higher hamonic wave of power supply.
The storage circuit is mainly made of storage chip U5, and model W25Q128 supports SPI communication；Referring to Fig. 6, institute
Display interface is stated to be mainly used for docking electric paper display.
Above embodiment cannot limit the protection scope of the invention, and the personnel of professional skill field are not departing from
In the case where the invention general idea, the impartial modification and variation done still fall within the range that the invention is covered
Within.
Claims (5)
1. a kind of electrophoretic electronic paper driving device, it is characterised in that it by governor circuit, communication interface circuit, display interface, connect
Mouthful driving circuit, the storage circuit being electrically connected with the governor circuit and the power supply circuit of working power is provided for foregoing circuit
Composition, the communication interface are electrically connected with the input terminal of the power supply circuit and governor circuit respectively, the governor circuit
Output end is electrically connected by the interface driving circuit with the display interface.
2. electrophoretic electronic paper driving device according to claim 1, it is characterised in that the governor circuit includes control core
Piece U1, the control chip U1 are connected with condition indication circuit and double crystal oscillating circuits.
3. electrophoretic electronic paper driving device according to claim 2, it is characterised in that the communication interface circuit includes turning
Connect chip U4, communication interface USB1, crystal oscillator Y3, resistance R8, capacitor C21, capacitor C22, capacitor C31 and capacitor C32, the switching
1 pin of chip U4 is grounded；2 and 3 pins of the switching chip U4 connect 68 and 69 pins of the control chip U1 respectively；Institute
4 pins for stating switching chip U4 are grounded by the capacitor C31；5 pins of the switching chip U4 connect the communication interface
2 pins of USB1；6 pins of the switching chip U4 divide two-way, connect 3.3V voltage by the resistance R8 all the way, another way connects
3 pins of the communication interface USB1；7 pins of the switching chip U4 divide two-way, are grounded all the way by the capacitor C21,
Another way passes sequentially through the crystal oscillator Y3 and capacitor C22 ground connection；It is described switching chip U4 8 pins connect the crystal oscillator Y3 with it is described
The node of capacitor C22；16 pins of the switching chip U4 divide two-way, connect 3.3V voltage all the way, and another way passes through the capacitor
C32 ground connection；5 pins of the communication interface USB1 are grounded.
4. electrophoretic electronic paper driving device according to claim 3, it is characterised in that the power supply circuit includes that control is pressed
Key K2, voltage-stablizer U2, capacitor C17, capacitor C18, capacitor C19 and capacitor C20；3 and 4 pins of the control button K2 connect described
1 pin of communication interface USB1,2 pins point, three tunnels of the control button K2, is grounded by the capacitor C20, second all the way
Road is grounded by the capacitor C18, and third road connects 3 pins of the voltage-stablizer U2；1 pin of the voltage-stablizer U2 is grounded；Institute
2 pins point, three tunnels for stating voltage-stablizer U2, are grounded by the capacitor C19 all the way, and another way is grounded by the capacitor C17, the
Three tunnels connect 4 pins of the voltage-stablizer U2.
5. electrophoretic electronic paper driving device according to claim 2, it is characterised in that the interface driving circuit includes MOS
Pipe Q1, inductance L1, diode D1, diode D2, diode D3, capacitor C10, capacitor C11, capacitor C12, resistance R1 and resistance
R2；Two-way is divided in the pole G of the metal-oxide-semiconductor Q1, connects 2 pins of the display interface all the way, and another way is grounded by the resistance R1；
The pole S of the metal-oxide-semiconductor Q1 is grounded by the resistance R2；Two-way is divided after passing through the inductance L1 in the pole D of the metal-oxide-semiconductor Q1, and one
Road connects 3.3V voltage, and another way is grounded by the capacitor C11；The anode of the diode D3 connect the pole D of the metal-oxide-semiconductor Q1 with
The node of the inductance L1, cathode divide two-way, connect 21 pins of the display interface all the way, and another way passes through the capacitor C10
Ground connection；The anode of the diode D1 connects 23 pins of the display interface, and cathode divides two-way, passes through the capacitor C12 all the way
The node of the diode D3 Yu the inductance L1 are connect, another way is grounded by the diode D2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910269751.6A CN109920382A (en) | 2019-04-02 | 2019-04-02 | Electrophoresis electronic paper driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910269751.6A CN109920382A (en) | 2019-04-02 | 2019-04-02 | Electrophoresis electronic paper driving device |
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| Publication Number | Publication Date |
|---|---|
| CN109920382A true CN109920382A (en) | 2019-06-21 |
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ID=66968615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910269751.6A Pending CN109920382A (en) | 2019-04-02 | 2019-04-02 | Electrophoresis electronic paper driving device |
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| CN (1) | CN109920382A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201522820U (en) * | 2009-05-20 | 2010-07-07 | 黄之峰 | Aerial image-text swinging display with man-machine interaction function |
| CN101853630A (en) * | 2010-03-27 | 2010-10-06 | 安徽师范大学 | System for driving RAM-Mapping LED display screen |
| CN201876645U (en) * | 2010-11-10 | 2011-06-22 | 江汉大学 | Touch control e-paper |
| CN204102474U (en) * | 2014-09-02 | 2015-01-14 | 佛山市广华合志科技有限公司 | A kind of Electronic Paper perpetual calendar |
| CN108766370A (en) * | 2018-06-11 | 2018-11-06 | 深圳市国华光电科技有限公司 | A kind of electrowetting drive system and its control method |
| CN208126765U (en) * | 2018-05-22 | 2018-11-20 | 中国地质大学（北京） | A kind of SCM Based electric identification apparatus |
-
2019
- 2019-04-02 CN CN201910269751.6A patent/CN109920382A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201522820U (en) * | 2009-05-20 | 2010-07-07 | 黄之峰 | Aerial image-text swinging display with man-machine interaction function |
| CN101853630A (en) * | 2010-03-27 | 2010-10-06 | 安徽师范大学 | System for driving RAM-Mapping LED display screen |
| CN201876645U (en) * | 2010-11-10 | 2011-06-22 | 江汉大学 | Touch control e-paper |
| CN204102474U (en) * | 2014-09-02 | 2015-01-14 | 佛山市广华合志科技有限公司 | A kind of Electronic Paper perpetual calendar |
| CN208126765U (en) * | 2018-05-22 | 2018-11-20 | 中国地质大学（北京） | A kind of SCM Based electric identification apparatus |
| CN108766370A (en) * | 2018-06-11 | 2018-11-06 | 深圳市国华光电科技有限公司 | A kind of electrowetting drive system and its control method |
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Application publication date: 20190621 |