CN118082377A - Voltage control system suitable for arrayed electrofluidic spray heads - Google Patents

Voltage control system suitable for arrayed electrofluidic spray heads Download PDF

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Publication number
CN118082377A
CN118082377A CN202410413399.XA CN202410413399A CN118082377A CN 118082377 A CN118082377 A CN 118082377A CN 202410413399 A CN202410413399 A CN 202410413399A CN 118082377 A CN118082377 A CN 118082377A
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CN
China
Prior art keywords
voltage
arrayed
electrofluidic
nozzle
circuit
Prior art date
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Pending
Application number
CN202410413399.XA
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Chinese (zh)
Inventor
龚兴全
曹万胜
周康
叶世伟
唐伟
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Wuhan Guochuangke Photoelectric Equipment Co ltd
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Wuhan Guochuangke Photoelectric Equipment Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan Guochuangke Photoelectric Equipment Co ltd filed Critical Wuhan Guochuangke Photoelectric Equipment Co ltd
Priority to CN202410413399.XA priority Critical patent/CN118082377A/en
Publication of CN118082377A publication Critical patent/CN118082377A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
    • B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
    • B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform

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  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

The application discloses a voltage control system suitable for an arrayed electrofluidic sprinkler, which comprises: the nozzle control circuit is used for outputting a plurality of groups of high-frequency control signals according to the pattern to be printed and outputting a control instruction according to ink information carried by an externally input setting instruction; the PWM waveform generation circuit is used for generating PWM waveforms of corresponding parameters according to the control instruction; the high-voltage amplifying circuit is used for amplifying the PWM waveform and outputting the amplified PWM waveform as a common high-voltage signal; and the high-voltage control circuit is used for receiving and controlling the connection and disconnection of the common high-voltage signal and the corresponding nozzles according to the high-frequency control signals of each group, so that the high-voltage on-off control of each nozzle in the arrayed electrofluidic spray head is realized, and the pattern printing is finished. The application can realize independent control of each nozzle in the arrayed electrofluidic spray head, so that the number of the nozzles in the spray head can be quite large, and the printing efficiency can be effectively improved.

Description

Voltage control system suitable for arrayed electrofluidic spray heads
Technical Field
The present application relates to the field of electrofluidic inkjet printing technology, and more particularly, to a voltage control system suitable for an arrayed electrofluidic nozzle.
Background
The electrofluidic jet printing technology has the advantages of additive manufacturing, patternability, wide material adaptability, high process efficiency and the like, and is widely focused in the micro-nano manufacturing field. In the printing process, printing materials such as TFE, photoresist and other inks are precisely jet-printed, micro-nano scale structures can be formed on a substrate with smaller size according to requirements, and the current printing precision can be controlled below 10 mu m.
The technology is successfully applied to the fields of high-definition screens, flexible electronics, biomedical treatment and the like. The driving force generated by the electric field applied by the electrofluid jet printing technology is far greater than the extrusion force generated by expansion, so that the solution jet printing with a larger viscosity range (1-10000 cPs) can be realized. Meanwhile, as the liquid drops are formed at the tip of the Taylor cone, the diameter of the generated liquid drops is far smaller than that of the nozzle, and printing of high-resolution structures with micron-level or even nanometer-level can be realized, so that the liquid drops become research hot spots in recent years.
The arrayed electrofluidic spray head comprises a plurality of nozzles which are arrayed, however, the current electrofluidic spray printing technology has the following problems: (1) The traditional arrayed electrofluid jet printing technology adopts centralized control on the nozzles of the whole spray head, each nozzle is not independently controllable, in order to print the required pattern, the printing efficiency is low by mechanically moving the spray head or a substrate, the utilization efficiency of jet printing ink is low, and great waste exists; (2) The traditional arrayed electrofluidic jet printing is not controllable to each nozzle, so that the number of the nozzles cannot be increased, and generally, only a few nozzles are used, so that the printing efficiency is greatly reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the application aims to provide a voltage control system suitable for an arrayed electrofluidic sprinkler, and aims to solve the problems that the traditional electrofluidic sprinkler printing technology cannot accurately control each nozzle, the number of nozzles cannot be increased and the printing efficiency is low.
To achieve the above object, the present application provides a voltage control system suitable for an arrayed electrofluidic nozzle, the arrayed electrofluidic nozzle including a plurality of nozzles arrayed, the voltage control system including:
The nozzle control circuit is used for configuring the working time sequence flow parameters of all the nozzles in the arrayed electrofluidic spray head according to the pattern to be sprayed and printed, and then outputting a plurality of groups of high-frequency control signals according to the working time sequence flow parameters, wherein each group of high-frequency control signals comprises two paths of high-frequency control signals; and is also used for outputting a control instruction according to the ink information carried by the externally input setting instruction;
The PWM waveform generation circuit is used for generating PWM waveforms with corresponding parameters according to the control instruction, wherein the parameters of the PWM waveforms comprise bias voltage, amplitude voltage, duty ratio and phase;
The high-voltage amplifying circuit is used for amplifying the PWM waveform generated by the PWM waveform generating circuit according to the set parameters and outputting the amplified PWM waveform as a common high-voltage signal;
And the high-voltage control circuit is used for receiving and controlling the connection and disconnection of the common high-voltage signal and the corresponding nozzles according to the high-frequency control signals of each group, so that the high-voltage connection and disconnection control of each nozzle in the arrayed electrofluidic spray head is realized, and the pattern printing is finished.
The voltage control system suitable for the arrayed electrofluidic spray heads, provided by the application, utilizes the nozzle control circuit to output multiple paths of high-frequency control signals, controls the connection and disconnection of the common high-voltage signals and corresponding nozzles, can realize independent control of each nozzle in the spray heads, and can enable the number of the nozzles in the spray heads to be quite large; in addition, the application configures the working time sequence flow parameters of each nozzle in the spray head according to the pattern required by spray printing, and then controls the start and stop and the duration time of the corresponding nozzle according to the parameters, thereby realizing the printing of the required pattern.
As a further preferred aspect, the bias voltage and the amplitude voltage of the PWM waveform and the amplification factor of the high-voltage amplification circuit are set accordingly according to the peak voltage required for the ink ejection and the voltage required for the ink critical ejection in the ink information, and the duty ratio and the phase of the PWM waveform are set accordingly according to the property of the ink.
As a further preferred, the high voltage control circuit employs a plurality of gate circuits each including a half-bridge circuit and isolated gate drive chips U2 and U3;
The input ends of the isolated gate driving chips U2 and U3 correspondingly receive two paths of high-frequency control signals in a group of high-frequency control signals, the output ends of the isolated gate driving chips U2 and U3 are correspondingly connected with the grid electrode of an upper pipe and the grid electrode of a lower pipe in the half-bridge circuit, the drain electrode of the upper pipe is connected with the output end of the high-voltage amplifying circuit, the source electrode of the upper pipe and the drain electrode of the lower pipe are correspondingly connected with a nozzle in the arrayed electrofluid nozzle, and the source electrode of the lower pipe is grounded; the upper tube and the lower tube are both high-voltage MOS tubes.
As a further preferable mode, the nozzle control circuit comprises an upper computer, an MCU controller and a plurality of driving chips;
The upper computer is used for configuring the working time sequence flow parameters of each nozzle in the arrayed electrofluidic spray head according to the pattern required to be printed; the MCU controller is used for controlling the driving chip to output a plurality of groups of high-frequency control signals according to the received working time sequence flow parameters of each nozzle, and is also used for outputting a control instruction to the PWM waveform generating circuit according to ink information carried by an externally input setting instruction.
As a further preferable mode, the MCU controller communicates with the upper computer through a PHY chip and an RJ45 interface.
As a further preferable mode, the communication speed of the RJ45 interface is greater than or equal to 100Mb/s, and the time delay of the on-off control signal of the RJ45 interface is less than or equal to 1ms.
As a further preferred aspect, the PWM waveform generation circuit employs a signal generator.
As a further preferred aspect, the high voltage amplifying circuit employs a high voltage amplifier.
As a further preferred aspect, the arrayed electrofluidic spray heads are used in the field of OLED, QLED or MicroLED spray printing.
Drawings
FIG. 1 is a schematic block diagram of a voltage control system suitable for use with an arrayed electrofluidic sprinkler according to one embodiment of the present application;
FIG. 2 is a schematic block diagram of a voltage control system suitable for use with an arrayed electrofluidic spray head according to yet another embodiment of the present application;
FIG. 3 is a chip diagram of a driving chip according to an embodiment of the present application;
fig. 4 is a circuit diagram of a high voltage control circuit according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It is to be understood that in the description of the application, the terms "plurality" and "a plurality" mean at least one, such as one, two, etc., unless explicitly specified otherwise; the term "plurality" means two or more, unless specifically defined otherwise; the terms "first" and "second" and the like are used to distinguish between different objects and are not used to describe a particular order of objects; the term "and/or" includes any and all combinations of one or more of the associated listed items.
In addition, references to "one embodiment" throughout this specification; reference to "one embodiment," "an example," or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the phrase "in one embodiment; the appearances of the phrase "in one embodiment" and similar language in various places throughout this specification may, but do not necessarily, all refer to the same embodiment.
In order to solve the problems that the conventional arrayed electrofluidic spray printing technology cannot accurately control each nozzle, the number of nozzles cannot be increased, and the printing efficiency is low, the application provides a voltage control system suitable for an arrayed electrofluidic spray nozzle, which can be suitable for the spray printing manufacturing fields such as OLED, QLED or MicroLED, and the like, as shown in fig. 1 and 2, the control system mainly comprises a nozzle control circuit 100, a PWM waveform generation circuit 200, a high-voltage amplification circuit 300 and a high-voltage control circuit 400.
The nozzle control circuit 100 is configured to configure the operation time sequence flow parameters of each nozzle in the arrayed electrofluidic nozzle according to the pattern of the desired jet printing, that is, when each nozzle starts to spray, when each nozzle stops, and the operation duration, and then output multiple groups of high-frequency control signals according to the operation time sequence flow parameters, where each group of high-frequency control signals includes two paths of high-frequency control signals, and each group of high-frequency control signals is used for correspondingly controlling the operation state of one nozzle. The nozzle control circuit 100 is further configured to output a control command according to ink information carried by an externally input setting command.
Specifically, the nozzle control circuit 100 may employ a host computer, an MCU controller, and several driving chips. Preferably, the MCU controller communicates with the upper computer through a PHY chip and an RJ45 interface. Preferably, in order to meet the communication rate, the communication rate of the RJ45 interface is greater than or equal to 100Mb/s, and the time delay of the on-off control signal of the RJ45 interface is less than or equal to 1ms.
In this embodiment, the upper computer is configured to determine, according to a pattern to be printed, a working time sequence flow parameter of each nozzle in the arrayed electrofluidic spray head by using a pattern recognition algorithm commonly used in the art, and send the working time sequence flow parameter to the MCU controller, where the MCU controller controls the output end of each driving chip to output a corresponding high-frequency control signal according to the received parameter, and each two paths of high-frequency control signals output by the driving chip are used to correspondingly control the working state of one nozzle. And the MCU controller is also used for outputting a control instruction to the back-end PWM waveform generation circuit according to the ink information carried by the externally input setting instruction.
Considering the high efficiency and high resolution requirements of OLED, QLED, microLED et seq inkjet printing, the high resolution and high efficiency must require the control signals to control the nozzles to be high in frequency and sufficiently high in number. Therefore, the driving chip provided in this embodiment may preferably use a driving chip having 16 output terminals and a frequency of several khz.
FIG. 3 is a chip diagram of a driving chip provided in an embodiment of the present application, as shown in FIG. 3, a driving chip U1 has 16 paths (KZXH 0-KZXH) of high-frequency signal output ends, the VDD end of the driving chip U1 is connected in parallel with capacitors C1 and C2, and the capacitors C1 and C2 are used for filtering the power supply of the chip, so as to ensure the stable operation of the chip; the CLK end of the driving chip U1 is a chip clock pin, and the outside provides a stable clock to ensure the stable operation of the chip; the OE end of the driving chip U1 is a chip enabling pin, and the low level is effective; the i2c_sda and the i2c_scl of the driving chip U1 are pulled up through the resistors R8 and R9, so as to ensure that the I2C communication is normal.
In addition, the application is found through research: (1) In one jet printing period, the peak voltage can ensure the jet of ink at the nozzle, and the peak voltages required by the nozzles for finishing the jet of different ink are different; (2) In a jet printing period, in a non-peak voltage period (duty cycle), the state that the ink at the nozzle is always in critical spraying state can be ensured, the immediate spraying can be realized in the next peak voltage, and the consistency of the whole sprayed droplet volume can be further ensured, so that the printing precision with the error smaller than 10um can be realized in the jet printing size of the mu m level in the jet printing manufacturing fields of large area, high efficiency, high precision OLED, QLED, microLED and the like.
Accordingly, the PWM waveform generation circuit 200 provided in this embodiment is configured to generate PWM waveforms of corresponding parameters including bias voltage, amplitude voltage, frequency, duty ratio, phase, and the like, according to the control command output by the MCU controller.
Since the PWM waveform generated by the PWM waveform generating circuit 200 is low voltage and cannot be directly supplied to the nozzle, the voltage control system provided by the present application further includes a high voltage amplifying circuit 300 for amplifying the PWM waveform generated by the PWM waveform generating circuit according to the set parameters and outputting the amplified PWM waveform as a common high voltage signal.
In the present embodiment, the bias voltage and the amplitude voltage in the PWM waveform generated by the PWM waveform generation circuit 200 and the amplification factor of the high voltage amplification circuit 300 can be set accordingly according to the peak voltage required for the ink ejection used and the voltage required for the ink critical ejection. The frequency in the PWM waveform generated by the PWM waveform generation circuit 200 may be set in accordance with the efficiency required for the inkjet printing. The duty ratio and the phase in the PWM waveform generated by the PWM waveform generation circuit 200 may be set according to the nature of ink required for inkjet printing.
For example: the peak voltage required for ink ejection is 1100V, the voltage required for critical ink ejection is 900V, and then the bias voltage of the PWM waveform generated by the PWM waveform generating circuit 200 may be set to 1V, the amplitude voltage may be set to 0.1V, and the amplification factor of the high voltage amplifying circuit may be set to 1000 times, so that the common high voltage signal output by the high voltage amplifying circuit is the voltage of one standard PWM waveform with the lowest voltage of 900V and the highest voltage of 1100, and the ejection requirement of the ink is satisfied.
Specifically, the PWM waveform generation circuit provided in the present embodiment may employ a signal generator; the high voltage amplifying circuit 300 provided in this embodiment may employ a high voltage amplifier.
The high voltage control circuit 400 is configured to receive and control, according to each set of high frequency control signals, the common high voltage signal output by the high voltage amplifying circuit 300 and the on/off of the corresponding nozzle, thereby implementing high voltage on/off control on each nozzle in the arrayed electrofluidic spray head, and completing printing.
Specifically, the high voltage control circuit 400 provided in this embodiment employs a plurality of gate circuits, each including a half-bridge circuit and isolated gate driving chips U2 and U3.
As shown in fig. 4, in each gating circuit, the input ends of the isolated gate driving chips U2 and U3 correspondingly receive two paths of high-frequency control signals in a group of high-frequency control signals, the output ends of the isolated gate driving chips U2 and U3 correspondingly connect with the gate of the upper tube and the gate of the lower tube in the half-bridge circuit, the drain electrode of the upper tube is connected with the output end of the high-voltage amplifying circuit (i.e., the output end of the common high-voltage signal), the source electrode of the upper tube and the drain electrode of the lower tube correspondingly connect with one nozzle (corresponding to ch1_hv in fig. 4) in the arrayed electrofluidic spray head, and the source electrode of the lower tube is grounded.
It should be noted that, because the half-bridge circuit provided in this embodiment transmits high-voltage signals, the upper tube and the lower tube adopted in the half-bridge circuit need to be high-voltage MOS tubes.
The gating circuit provided in this embodiment has the following working principle: the isolating grid driving chips U2 and U3 are used for ensuring that a rear-stage high-voltage circuit (a high-voltage amplifying circuit) can be separated from a front-end weak-current circuit (a nozzle control circuit) and ensuring that the rear-stage high-voltage circuit can be switched on and switched off quickly; in fig. 4, capacitors C3 and C4 and capacitors C5 and C6 are respectively used for filtering the power supplies at two ends of the isolated gate driving chips U2 and U3, so as to ensure stable operation; resistors R13 and R14, resistors R11 and R12, resistors R17 and R18 and resistors R15 and R16 are respectively connected in series with the input end and the output end of the isolated gate driving chips U2 and U3, and in order to adjust the input and output waveforms of the isolated gate driving chips U2 and U3, the requirements of arrayed electrofluidic jet printing on voltage waveforms are met; the high-frequency control signals KZXH and KZXH are generated by the driving chip in fig. 2, and the common high-voltage signal vcc_hv is switched on and off on the corresponding nozzle by controlling whether the high-frequency control signals are generated or not and matching with the upper pipe Q1 and the lower pipe Q2 at the rear end, so that the function of a high-voltage switch is realized, and the working state of the corresponding nozzle is determined; the resistor R10 mainly plays a role of limiting current and protecting the high-voltage MOS tube.
The workflow of the voltage control system provided in this embodiment is as follows:
(1) The upper computer configures working time sequence flow parameters of all the nozzles in the arrayed electrofluidic spray head according to the characteristics of the pattern to be sprayed and printed, and determines when each nozzle starts spraying, stops, working duration time and the like;
(2) The MCU controller is used for receiving and controlling the driving chip to output a high-frequency control signal to the high-voltage control circuit according to the working time sequence flow parameters of each nozzle output by the upper computer; meanwhile, outputting a control instruction to the PWM waveform generating circuit according to ink information carried by an externally input setting instruction;
(3) The signal generator is used for generating PWM waveforms of corresponding parameters according to control instructions output by the MCU controller; the high-voltage amplifier receives the PWM waveform generated by the signal generator, amplifies the voltage according to the set parameters and outputs the amplified voltage as a public high-voltage signal;
(4) And each gating circuit in the high-voltage control circuit is used for receiving and controlling the connection and disconnection of the common high-voltage signal and the corresponding nozzle according to each group of high-frequency control signals, so that the high-voltage connection and disconnection control of each nozzle in the arrayed electrofluidic spray head is realized, and the pattern printing is completed.
The voltage control system suitable for the arrayed electrofluidic spray heads, provided by the embodiment, utilizes the nozzle control circuit to output multiple paths of high-frequency control signals, controls the connection and disconnection of the common high-voltage signals and corresponding nozzles, and can realize independent control of each nozzle in the spray heads, so that the number of the nozzles in the spray heads can be quite large; in addition, the working time sequence flow parameters of all the nozzles in the spray head are configured according to the pattern required by spray printing, and then the start and stop and the duration of the corresponding nozzles are controlled according to the parameters, so that the printing of the required pattern is realized, and compared with the traditional mode of printing the required pattern by mechanically moving the spray head or the substrate, the printing efficiency can be effectively improved.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the application and is not intended to limit the application, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the application are intended to be included within the scope of the application.

Claims (9)

1. A voltage control system suitable for an arrayed electrofluidic spray head comprising a plurality of nozzles arranged in an array, the voltage control system comprising:
The nozzle control circuit is used for configuring the working time sequence flow parameters of all the nozzles in the arrayed electrofluidic spray head according to the pattern to be sprayed and printed, and then outputting a plurality of groups of high-frequency control signals according to the working time sequence flow parameters, wherein each group of high-frequency control signals comprises two paths of high-frequency control signals; and is also used for outputting a control instruction according to the ink information carried by the externally input setting instruction;
The PWM waveform generation circuit is used for generating PWM waveforms with corresponding parameters according to the control instruction, wherein the parameters of the PWM waveforms comprise bias voltage, amplitude voltage, duty ratio and phase;
The high-voltage amplifying circuit is used for amplifying the PWM waveform generated by the PWM waveform generating circuit according to the set parameters and outputting the amplified PWM waveform as a common high-voltage signal;
And the high-voltage control circuit is used for receiving and controlling the connection and disconnection of the common high-voltage signal and the corresponding nozzles according to the high-frequency control signals of each group, so that the high-voltage connection and disconnection control of each nozzle in the arrayed electrofluidic spray head is realized, and the pattern printing is finished.
2. The voltage control system for an arrayed electrofluidic spray head according to claim 1, wherein the bias voltage and the amplitude voltage of the PWM waveform and the amplification factor of the high-voltage amplification circuit are set according to the peak voltage required for the ink ejection and the voltage required for the ink critical ejection in the ink information, and the duty ratio and the phase of the PWM waveform are set according to the properties of the ink.
3. The voltage control system for an arrayed electrofluidic spray head of claim 1, wherein the high voltage control circuit employs a plurality of gate circuits, each gate circuit comprising a half-bridge circuit and isolated gate drive chips U2 and U3;
The input ends of the isolated gate driving chips U2 and U3 correspondingly receive two paths of high-frequency control signals in a group of high-frequency control signals, the output ends of the isolated gate driving chips U2 and U3 are correspondingly connected with the grid electrode of an upper pipe and the grid electrode of a lower pipe in the half-bridge circuit, the drain electrode of the upper pipe is connected with the output end of the high-voltage amplifying circuit, the source electrode of the upper pipe and the drain electrode of the lower pipe are correspondingly connected with a nozzle in the arrayed electrofluid nozzle, and the source electrode of the lower pipe is grounded; the upper tube and the lower tube are both high-voltage MOS tubes.
4. The voltage control system for an arrayed electrofluidic sprinkler of any one of claims 1-3, wherein the nozzle control circuit comprises an upper computer, an MCU controller and a plurality of driver chips;
The upper computer is used for configuring the working time sequence flow parameters of each nozzle in the arrayed electrofluidic spray head according to the pattern required to be printed; the MCU controller is used for controlling the driving chip to output a plurality of groups of high-frequency control signals according to the received working time sequence flow parameters of each nozzle, and is also used for outputting a control instruction to the PWM waveform generating circuit according to ink information carried by an externally input setting instruction.
5. The voltage control system for an arrayed electrofluidic sprinkler of claim 4, wherein the MCU controller communicates with the host computer through a PHY chip, RJ45 interface.
6. The voltage control system for an arrayed electrofluidic sprinkler of claim 5, wherein the communication rate of the RJ45 interface is greater than or equal to 100Mb/s and the on-off control signal delay of the RJ45 interface is less than or equal to 1ms.
7. The voltage control system for an arrayed electrofluidic spray head of claim 1, wherein the PWM waveform generation circuit employs a signal generator.
8. The voltage control system for an arrayed electrofluidic spray head of claim 1, wherein the high voltage amplification circuit employs a high voltage amplifier.
9. The voltage control system for an arrayed electrofluidic spray head of claim 1, wherein the arrayed electrofluidic spray head is used in the field of OLED, QLED or MicroLED spray printing.
CN202410413399.XA 2024-04-08 2024-04-08 Voltage control system suitable for arrayed electrofluidic spray heads Pending CN118082377A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410413399.XA CN118082377A (en) 2024-04-08 2024-04-08 Voltage control system suitable for arrayed electrofluidic spray heads

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410413399.XA CN118082377A (en) 2024-04-08 2024-04-08 Voltage control system suitable for arrayed electrofluidic spray heads

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Publication Number Publication Date
CN118082377A true CN118082377A (en) 2024-05-28

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