CN214150904U

CN214150904U - Electronic paper module testing jig with programmable driving voltage

Info

Publication number: CN214150904U
Application number: CN202023018653.2U
Authority: CN
Inventors: 肖忠平; 周玉峰; 胡自萍; 肖绪名
Original assignee: Jiangxi Xingtai Technology Co Ltd
Current assignee: Jiangxi Xingtai Technology Co Ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-09-07
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses an electronic paper module test fixture of programmable drive voltage, including control module, voltage programmable circuit, electronic paper module peripheral drive circuit, button circuit and indicating circuit, control module and electronic paper module peripheral drive circuit all are connected with voltage programmable circuit electricity, and button circuit and indicating circuit all are connected with the control module electricity, and control module includes main control unit, reset circuit and burns the circuit, and reset circuit and burning circuit all are connected with the main control unit electricity; the utility model discloses inside voltage programmable circuit can provide five grades of voltage values for electronic paper module peripheral drive circuit under control module's control, so, can detect the drive effect of electronic paper module under high, the low-voltage condition, and in addition, its inside voltage programmable circuit can provide stable voltage for electronic paper module peripheral drive circuit to can avoid the electronic paper module unable demonstration or the poor phenomenon of display effect to appear in the testing process.

Description

Electronic paper module testing jig with programmable driving voltage

Technical Field

The utility model relates to an electronic paper module test fixture technical field, concretely relates to drive voltage's electronic paper module test fixture able to programme.

Background

At present, in the test process of the electronic paper module, the electronic paper module is tested in a battery power supply mode, and the power supply voltage of a battery is reduced along with the reduction of the electric quantity of the battery, so that the phenomenon that the electronic paper module cannot display or has poor display effect occurs under the condition of low voltage; in addition, the conventional method for testing the electronic paper module by using the fixed voltage with the battery voltage of 3.0V cannot detect the driving effect of the electronic paper module under the conditions of high voltage and low voltage, and if test jigs with different power supply voltages are adopted, the testing efficiency of the electronic paper module is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model is not enough to prior art, the utility model provides a drive voltage's electronic paper module test fixture able to programme, its inside voltage programmable circuit can provide five grades of voltage values for electronic paper module peripheral drive circuit under control module's control, so, can detect the drive effect of electronic paper module under the high, low-voltage condition, furthermore, its inside voltage programmable circuit can provide stable voltage for electronic paper module peripheral drive circuit, thereby can avoid the electronic paper module unable demonstration or the poor phenomenon of display effect to appear in the testing process.

The utility model discloses a drive voltage able to programme's electronic paper module test fixture, including control module, voltage programmable circuit, electronic paper module peripheral drive circuit, button circuit and indicating circuit, control module and electronic paper module peripheral drive circuit all are connected with voltage programmable circuit electricity, and button circuit and indicating circuit all are connected with the control module electricity, and control module includes main control unit, reset circuit and burns the circuit, and reset circuit all is connected with the main control unit electricity with burning the circuit.

The utility model discloses an electronic paper module test fixture of programmable drive voltage, wherein, voltage programmable circuit is including step-down conversion chip U1, power source CN1, switch S1, emitting diode LED1, inductance L1, resistance R4, R1, R3, R2, R5, R6, R7, R8, R9, electric capacity C3, C4, C1, C2, power source CN1 ' S one end ground connection, behind power source CN1 ' S other end series switch S1 with emitting diode LED1 ' S positive pole and resistance R1 ' S one end electricity connection, ground connection behind emitting diode LED1 ' S negative pole series resistance R4, resistance R1 ' S the other end and step-down conversion chip U1 ' S8 foot, 7 foot and 5 foot electricity connection, electric capacity C3 ' S one end is connected with step-down conversion chip U3 ' S8 foot electricity connection, electric capacity C3 ' S other end ground connection, electric capacity C3 and electric capacity C87472, the equal ground connection of step-down conversion chip U3 and step-down conversion chip U3 ' S3 foot connection, the equal ground connection of step-down conversion chip U3 and the step-down conversion chip 3 of one end, One end of a capacitor C1, one end of a capacitor C2 and one end of a resistor R2 are electrically connected, the other end of a resistor R3 and the other end of a capacitor C1 are electrically connected with a 4 pin of a buck conversion chip U1, the other end of a capacitor C2 is grounded, a power supply terminal VCC is led out of the other end of the resistor R2, one end of the resistor R5, one end of a resistor R6, one end of the resistor R7, one end of a resistor R8 and one end of the resistor R9 are electrically connected with a 4 pin of a buck conversion chip U1, the other end of the resistor R5 is grounded, the other end of the resistor R6, the other end of the resistor R7, the other end of the resistor R8 and the other end of the resistor R9 are electrically connected with an 11 pin, a 12 pin, a 13 pin and a 14 pin of a microprocessor U2 in the main control unit respectively, and a 9 pin of the buck conversion chip U1 is grounded; after the voltage programmable circuit is adopted, when the

pins

11, 12, 13 and 14 of the microprocessor U2 in the main control unit are all in a high-impedance state, the voltage value output by the power supply terminal VCC is 2.3V; when the pin 11 of the microprocessor U2 in the main control unit is at a low level and the

pins

12, 13 and 14 of the microprocessor U2 in the main control unit are all in a high impedance state, the voltage value output by the power supply terminal VCC is 2.4V; when the pin 12 of the microprocessor U2 in the main control unit is at a low level and the

pins

11, 13 and 14 of the microprocessor U2 in the main control unit are all in a high impedance state, the voltage value output by the power supply terminal VCC is 2.5V; when the pin 13 of the microprocessor U2 in the main control unit is at a low level and the

pins

11, 12 and 14 of the microprocessor U2 in the main control unit are all in a high impedance state, the voltage value output by the power supply terminal VCC is 3.0V; when the pin 14 of the microprocessor U2 in the main control unit is at a low level and the

pins

11, 12 and 13 of the microprocessor U2 in the main control unit are all in a high impedance state, the voltage value output by the power supply terminal VCC is 3.6V; therefore, the voltage programmable circuit can provide five-level voltage values for the peripheral driving circuit of the electronic paper module.

The utility model discloses an electronic paper module test fixture of programmable drive voltage, wherein, the peripheral drive circuit of electronic paper module includes electronic paper module connection interface CON1, field effect transistor Q1, resistance R11, R14, R16, R15, electric capacity C9, C6, C10, C15, diode D2, D3, D4, inductance L2, L3, single-pole double-throw switch S2, S3, one end of resistance R11 is connected with the power VCC electricity, power VCC1 is drawn forth to the other end of resistance R11, one end of electric capacity C9 is connected with power VCC1 electricity, the other end ground connection of electric capacity C9, the 1 foot of single-pole double-throw switch S2 is connected with power VCC1 electrically, the 3 foot of 2 foot series inductance L2 of single-pole double-throw switch S2 is connected with the 3 foot of field effect transistor Q1 electrically, the 3 foot of single-pole double-throw S2 is connected with the positive pole double-throw inductor L3 electrically, the negative pole double-throw diode Q3 is connected with the negative pole Q3 of the diode D3, the anode of the diode D2 is electrically connected with the 23 pin of the electronic paper module connection interface CON1, the cathode of the diode D3 is grounded, two ends of the capacitor C10 are respectively electrically connected with the anode of the diode D2 and the cathode of the diode D3, the anode of the diode D4 is electrically connected with the 3 pin of the field-effect tube Q1, the cathode of the diode D4 is electrically connected with the 21 pin of the electronic paper module connection interface CON1, one end of the capacitor C15 is electrically connected with the cathode of the diode D4, the other end of the capacitor C15 is grounded, the 1 pin of the field-effect tube Q1 is electrically connected with the 2 pin of the electronic paper module connection interface CON1, the 1 pin of the field-effect tube Q1 is grounded after being connected with the series resistor R14, the 2 pin of the field-effect tube Q1 is electrically connected with the 3 pin of the electronic paper module connection interface CON1 and the 1 pin of the single-pole double-throw switch S3, the 2 pin of the single-double-throw switch S3 is grounded after being connected with the series resistor R15; the electronic paper module connecting interface CON1 has its 4, 5 and 8 pins respectively connected in series with the capacitor C8, the capacitor C11 and the resistor R12 and then grounded, the electronic paper module connecting interface CON1 has its 15 and 16 pins electrically connected, the electronic paper module connecting interface CON1 has its 15 pin series resistor R13 and then electrically connected to the power supply terminal VCC1, the electronic paper module connecting interface CON1 has its 15 pin series capacitor C13 and then grounded, the electronic paper module connecting interface CON1 has its 17 pin grounded, the electronic paper module connecting interface CON1 has its 18, 20, 22 and 24 pins respectively connected in series with the capacitor C16, the capacitor C17, the capacitor C18 and the capacitor C19 and then grounded; after the electronic paper module peripheral driving circuit is adopted, the single-pole double-throw switches S2 and S3 are turned, so that the electronic paper module peripheral driving circuit can realize two driving modes, and the electronic paper module peripheral driving circuit is suitable for all electronic paper modules on the market at present.

The utility model discloses a programmable drive voltage's electronic paper module test fixture, wherein, the indicating circuit includes resistance R17, R19, triode Q2 and emitting diode LED2, be connected with the 20 feet of microprocessor U2 in the main control unit behind triode Q2's the base series resistance R17 electricity, triode Q2's projecting pole is connected with power end VCC electricity, triode Q2's collecting electrode is connected with emitting diode LED 2's anodal electricity, ground connection behind emitting diode LED 2's the negative pole series resistance R19; through the setting of indicating circuit, after control module control voltage programmable circuit finishes testing the electron paper module with the mode of five grades of voltages, emitting diode LED2 can be lighted by the control module to inform the tester that the test is accomplished.

The utility model discloses a programmable drive voltage's electronic paper module test fixture, wherein, the button circuit includes resistance R25, R26 and button K1, is connected with power end VCC electricity behind the first end series resistance R25 of button K1, and the first end of button K1 is connected with the 30 feet electricity of microprocessor U2 in the main control unit, and the second end series resistance R26 of button K1 back ground connection; by using the button circuit, when the button K1 is pressed, the pin 30 of the microprocessor U2 can receive a low signal, and the control module starts the test.

The utility model discloses inside voltage programmable circuit can provide five grades of voltage values for electronic paper module peripheral drive circuit under control module's control, so, can detect the drive effect of electronic paper module under high, the low-voltage condition, and in addition, its inside voltage programmable circuit can provide stable voltage for electronic paper module peripheral drive circuit to can avoid the electronic paper module unable demonstration or the poor phenomenon of display effect to appear in the testing process.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic circuit block diagram of the present invention;

FIG. 2 is a circuit schematic of the control module;

FIG. 3 is a circuit schematic of a voltage programmable circuit;

FIG. 4 is a schematic circuit diagram of a peripheral driving circuit of the electronic paper module;

FIG. 5 is a circuit schematic of the indicating circuit;

fig. 6 is a circuit schematic of the button circuit.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for description purposes, not specifically referring to the order or sequence, and are not intended to limit the present invention, but only to distinguish the components or operations described in the same technical terms, and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model discloses a drive voltage able to programme's electronic paper module test fixture, including control module 1, voltage programming circuit 2, electronic paper module peripheral drive circuit 3, button circuit 4 and indicating circuit 5, control module 1 and electronic paper module peripheral drive circuit 3 all are connected with voltage programming circuit 2 electricity, button circuit 4 and indicating circuit 5 all are connected with control module 1 electricity, control module 1 includes main control unit 11, reset circuit 12 and burning circuit 13 all are connected with main control unit 11 electricity, voltage programming circuit 2, button circuit 4 and indicating circuit 5 all are connected with main control unit 11 electricity.

The voltage programmable circuit 2 comprises a buck conversion chip U1, a power interface CN1, a switch S1, a light emitting diode LED1, an inductor L1, a resistor R4, an R1, an R3, an R2, an R5, an R6, an R7, an R8, an R9, a capacitor C3, a C4, a C1 and a C2, one end of a power interface CN1 is grounded, the other end of the power interface CN1 is electrically connected with an anode of the light emitting diode LED1 and one end of the resistor R1 after being connected in series with the switch S1, a cathode of the light emitting diode LED1 is grounded after being connected in series with the resistor R1, the other end of the resistor R1 is electrically connected with an 8 pin, a 7 pin and a 5 pin of the buck conversion chip U1, one end of the capacitor C1 is electrically connected with an 8 pin of the buck conversion chip U1, the other end of the capacitor C1 is grounded, the capacitor C1 is electrically connected with the capacitor C1 and the buck conversion chip C1 in parallel with the capacitor C1, the buck conversion chip U1, the pin 6, the pin 3 and the capacitor R1 are electrically connected with the one end of the buck conversion chip 1 and the capacitor R1, the other end of the resistor R3 and the other end of the capacitor C1 are electrically connected with a pin 4 of a buck conversion chip U1, the other end of the capacitor C2 is grounded, a power supply terminal VCC is led out from the other end of the resistor R2, one end of the resistor R5, one end of the resistor R6, one end of the resistor R7, one end of the resistor R8 and one end of the resistor R9 are electrically connected with a pin 4 of the buck conversion chip U1, the other end of the resistor R5 is grounded, the other end of the resistor R6, the other end of the resistor R7, the other end of the resistor R8 and the other end of the resistor R9 are electrically connected with a pin 11, a pin 12, a pin 13 and a pin 14 of a microprocessor U2 in the main control unit 11, and a pin 9 of the buck conversion chip U1 is grounded; after the voltage programmable circuit is adopted, when the

pins

The electronic paper module peripheral driving circuit 3 comprises an electronic paper module connecting interface CON1, a field effect transistor Q1, resistors R11, R14, R16, R15, capacitors C9, C6, C10, C15, diodes D2, D3, D4, inductors L2, L3, single-pole double-throw switches S2, S3, one end of the resistor R11 is electrically connected with a power supply terminal VCC, the other end of the resistor R11 leads out the power supply terminal VCC1, one end of the capacitor C9 is electrically connected with the power supply terminal VCC1, the other end of the capacitor C9 is grounded, a pin 1 of the single-pole double-throw switch S2 is electrically connected with the power supply terminal VCC1, a pin 2 of the single-pole double-throw switch S2 is electrically connected with a pin 3 of the field effect transistor Q2 after being connected with the inductor L2 in series, a pin 3 of the single-pole double-throw switch S2 is electrically connected with a pin 3 of the diode CON 2 and a pin D2 of the paper module. The negative electrode of the diode D3 is grounded, two ends of a capacitor C10 are respectively electrically connected with the positive electrode of the diode D2 and the negative electrode of the diode D3, the positive electrode of the diode D4 is electrically connected with the 3 pin of the field effect transistor Q1, the negative electrode of the diode D4 is electrically connected with the 21 pin of the electronic paper module connection interface CON1, one end of the capacitor C15 is electrically connected with the negative electrode of the diode D4, the other end of the capacitor C15 is grounded, the 1 pin of the field effect transistor Q1 is electrically connected with the 2 pin of the electronic paper module connection interface CON1, the 1 pin series resistor R14 of the field effect transistor Q1 is grounded after being grounded, the 2 pin of the field effect transistor Q1 is electrically connected with the 3 pin of the electronic paper module connection interface CON1 and the 1 pin of the single-pole double-throw switch S3, the 2 pin series resistor R15 of the single-pole double-throw switch S3 is grounded after being connected with the 3 pin series resistor R16 of the single-pole double-throw switch S3 is grounded after being connected with the resistor R16; the electronic paper module connecting interface CON1 has its 4, 5 and 8 pins respectively connected in series with the capacitor C8, the capacitor C11 and the resistor R12 and then grounded, the electronic paper module connecting interface CON1 has its 15 and 16 pins electrically connected, the electronic paper module connecting interface CON1 has its 15 pin series resistor R13 and then electrically connected to the power supply terminal VCC1, the electronic paper module connecting interface CON1 has its 15 pin series capacitor C13 and then grounded, the electronic paper module connecting interface CON1 has its 17 pin grounded, the electronic paper module connecting interface CON1 has its 18, 20, 22 and 24 pins respectively connected in series with the capacitor C16, the capacitor C17, the capacitor C18 and the capacitor C19 and then grounded; after the electronic paper module peripheral driving circuit is adopted, the single-pole double-throw switches S2 and S3 are turned, so that the electronic paper module peripheral driving circuit can realize two driving modes, and the electronic paper module peripheral driving circuit is suitable for all electronic paper modules on the market at present.

The indicating circuit 5 comprises resistors R17 and R19, a triode Q2 and a light-emitting diode LED2, wherein the base electrode of the triode Q2 is electrically connected with a pin 20 of a microprocessor U2 in the main control unit 11 after being connected with a resistor R17 in series, the emitter electrode of the triode Q2 is electrically connected with a power supply terminal VCC, the collector electrode of the triode Q2 is electrically connected with the anode of a light-emitting diode LED2, and the cathode electrode of the light-emitting diode LED2 is grounded after being connected with a resistor R19 in series; through the setting of indicating circuit, after control module control voltage programmable circuit finishes testing the electron paper module with the mode of five grades of voltages, emitting diode LED2 can be lighted by the control module to inform the tester that the test is accomplished.

The button circuit 4 comprises resistors R25 and R26 and a button K1, wherein the first end of the button K1 is electrically connected with a power supply terminal VCC after being connected with the resistor R25 in series, the first end of the button K1 is electrically connected with a pin 30 of a microprocessor U2 in the main control unit 11, and the second end of the button K1 is connected with the resistor R26 in series and then is grounded; by using the button circuit, when the button K1 is pressed, the pin 30 of the microprocessor U2 can receive a low signal, and the control module starts the test.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a programmable drive voltage's electronic paper module test fixture which characterized in that: including control module (1), voltage programmable circuit (2), electronic paper module peripheral drive circuit (3), button circuit (4) and indicating circuit (5), control module (1) and electronic paper module peripheral drive circuit (3) all are connected with voltage programmable circuit (2) electricity, button circuit (4) and indicating circuit (5) all are connected with control module (1) electricity, control module (1) includes main control unit (11), reset circuit (12) and burns record circuit (13), reset circuit (12) and record circuit (13) all are connected with main control unit (11) electricity.

2. The electronic paper module testing jig with programmable driving voltage as claimed in claim 1, wherein said voltage programmable circuit (2) comprises a buck conversion chip U1, a power interface CN1, a switch S1, a light emitting diode LED1, an inductor L1, resistors R1, and R1, capacitors C1, and C1, one end of said power interface CN1 is grounded, the other end of said power interface CN1 is electrically connected with the anode of said light emitting diode LED1 and one end of said resistor R1 after being connected in series with the switch S1, the cathode of said light emitting diode LED1 is electrically connected with the ground after being connected in series with the resistor R1, the other end of said resistor R1 is electrically connected with the pins 8, 7 and 5 of the buck conversion chip U1, one end of said capacitor C1 is electrically connected with the pin 8 of the buck conversion chip 1, the other end of said capacitor C1 is electrically connected with the capacitor C1 in parallel with the capacitor C1, the pin 6, the pin 3 and the pin 1 of the buck conversion chip U1 are all grounded, the pin 2 of the buck conversion chip U1 is connected with an inductor L1 in series and then is electrically connected with one end of a resistor R3, one end of a capacitor C1, one end of a capacitor C2 and one end of a resistor R2, the other end of a resistor R3 and the other end of a capacitor C1 are both electrically connected with the pin 4 of a buck conversion chip U1, the other end of the capacitor C2 is grounded, the other end of a resistor R2 leads out a power supply terminal VCC, one end of the resistor R5, one end of a resistor R6, one end of a resistor R7, one end of a resistor R8 and one end of a resistor R9 are all electrically connected with the pin 4 of the buck conversion chip U1, the other end of the resistor R5 is grounded, the other end of the resistor R6, the other end of the resistor R7, the other end of the pin 12, the other end of the resistor R8 and the other end of the resistor R9 are respectively electrically connected with the pin 11, the pin 12, pin 14 and the pin 14 of the microprocessor U2 in the main control unit (11), the pin 9 of the buck conversion chip U1 is grounded.

3. The electronic paper module test fixture of programmable driving voltage according to claim 2, wherein said electronic paper module peripheral driving circuit (3) comprises an electronic paper module connection interface CON1, a FET Q1, resistors R11, R14, R16, R15, capacitors C9, diodes D9, inductors L9, single-pole double-throw switches S9, one end of said resistor R9 is electrically connected to a power supply terminal VCC, the other end of said resistor R9 leads out the power supply terminal VCC 9, one end of said capacitor C9 is electrically connected to the power supply terminal 9, the other end of said capacitor C9 is grounded, the 1 pin of said single-pole double-throw switch S9 is electrically connected to a VCC 9, the 2 pin of said single-pole double-throw switch S9 is electrically connected to the 3 pin of the FET Q9 after being connected to the inductor L9 in series, the single-pole double-throw switch S9 is electrically connected to the FET 9 after being connected to the power supply terminal Q9, the 3 feet of the field effect tube Q1 are electrically connected with the negative pole of the diode D2 and the positive pole of the diode D3 after being connected with the capacitor C6 in series, the positive pole of the diode D2 is electrically connected with the 23 feet of the electronic paper model group connection interface CON1, the negative pole of the diode D3 is grounded, two ends of the capacitor C10 are respectively electrically connected with the positive pole of the diode D2 and the negative pole of the diode D3, the positive pole of the diode D4 is electrically connected with the 3 feet of the field effect tube Q1, the negative pole of the diode D4 is electrically connected with the 21 feet of the electronic paper model group connection interface CON1, one end of the capacitor C15 is electrically connected with the negative pole of the diode D4, the other end of the capacitor C15 is grounded, the 1 foot of the field effect tube Q1 is electrically connected with the 2 feet of the electronic paper model group connection interface CON1, the 1 foot of the field effect tube Q1 is electrically connected with the resistor R14 feet in series and the 2 feet of the electronic paper model group connection interface CON and the single throw switch 1 are electrically connected with the single pole 3, the 2-pin series resistor R15 of the single-pole double-throw switch S3 is grounded, and the 3-pin series resistor R16 of the single-pole double-throw switch S3 is grounded; the electronic paper module connection interface CON1 has a 4 pin, a 5 pin and a 8 pin which are respectively connected in series with a capacitor C8, a capacitor C11 and a resistor R12 and then grounded, the electronic paper module connection interface CON1 has a 15 pin and a 16 pin which are electrically connected, the electronic paper module connection interface CON1 has a 15 pin connected in series with a resistor R13 and then electrically connected with a power supply terminal VCC1, the electronic paper module connection interface CON1 has a 15 pin connected in series with a capacitor C13 and then grounded, the electronic paper module connection interface CON1 has a 17 pin which is grounded, and the electronic paper module connection interface CON1 has a 18 pin, a 20 pin, a 22 pin and a 24 pin which are respectively connected in series with a capacitor C16, a capacitor C17, a capacitor C18 and a capacitor C19 and then grounded.

4. The electronic paper module testing jig with programmable driving voltage as claimed in claim 2, wherein the indicating circuit (5) comprises resistors R17, R19, a transistor Q2 and a light emitting diode LED2, wherein a base of the transistor Q2 is electrically connected with a resistor R17 in series and then with a pin 20 of a microprocessor U2 in the main control unit (11), an emitter of the transistor Q2 is electrically connected with a VCC power supply terminal, a collector of the transistor Q2 is electrically connected with an anode of the light emitting diode LED2, and a cathode of the light emitting diode LED2 is electrically connected with a resistor R19 in series and then with a ground.

5. The electronic paper module test fixture of programmable driving voltage of claim 2, wherein the button circuit (4) comprises resistors R25, R26 and a button K1, a first end of the button K1 is electrically connected to the power source terminal VCC after being connected in series with the resistor R25, a first end of the button K1 is electrically connected to the 30 pin of the microprocessor U2 in the main control unit (11), and a second end of the button K1 is electrically connected to the ground after being connected in series with the resistor R26.