Electrochromic driving circuit and electrochromic device

Abstract

The invention provides an electrochromism driving circuit which comprises a control module, the control module comprises a first pin and a second pin, the first pin outputs a first level signal and a second level signal in a time-sharing mode, and the second pin outputs the first level signal and the second level signal in a time-sharing mode, the first pin and the second pin output different level signals at the same moment; the driving module comprises a first driving unit and a second driving unit which are connected in parallel, the first driving unit is electrically connected with the first pin, and the second driving unit is electrically connected with the second pin; the first driving unit and the second driving unit output a first control signal when receiving the first level signal, and the first driving unit and the second driving unit output a second control signal when receiving the second level signal. The invention further provides an electrochromic device.

Description

Technical Field

[0001] The present application relates to an electrochromic driving circuit and an electrochromic device comprising the electrochromic driving circuit. Background Art

[0002] With the rapid development of smart devices, users require that smart devices can be better integrated with the environment to make the use of smart devices more intelligent. In order to make the display screen of the smart device adapt to the changes in the light of the environment, an electrochromic device can be set in the smart device, and the electrochromic device includes an electrochromic lens. Electrochromic lenses generally use suspended particle device (Suspended Particle Device, SPD) technology, polymer dispersed liquid crystal (Polymer Dispersed Liquid Crystal, PDLC) technology or electrochromic (Electrochromic, EC) technology. Among them, when using electrochromic technology, the control module used to change the transmittance of the electrochromic lens requires more control terminals, resulting in a higher production cost of the electrochromic lens. Summary of the invention

[0003] The first aspect of the present application provides an electrochromic driving circuit, comprising: A control module, comprising a first pin and a second pin, wherein the first pin outputs a first level signal and a second level signal in a time-sharing manner, and the second pin outputs the first level signal and the second level signal in a time-sharing manner, and the first pin and the second pin output different level signals at the same time; and The driving module includes a first driving unit and a second driving unit connected in parallel, the first driving unit is electrically connected to the first pin, and the second driving unit is electrically connected to the second pin; the first driving unit and the second driving unit output a first control signal when receiving the first level signal, and the first driving unit and the second driving unit output a second control signal when receiving the second level signal.

[0004] For the above electrochromic drive circuit, the first pin of the control module controls the first drive unit, and the second pin controls the second drive unit. That is, one pin of the control module controls one drive unit, which is conducive to simplifying the circuit structure, reducing the area occupied by the circuit on the printed circuit board, and reducing the manufacturing cost.

[0005] A second aspect of the present application provides an electrochromic device, comprising: The electrochromic driving circuit as described above; The electrochromic lens is electrically connected to the driving module, and the light transmittance of the electrochromic lens changes with the change of the control signal output by the driving module.

[0006] The electrochromic device described above is integrated with the electrochromic driving circuit described above, and all the beneficial effects of the electrochromic driving circuit described above can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 Schematic diagram of a module of an electrochromic device according to an embodiment of the present application.

[0008] Figure 2 Schematic diagram of the circuit structure of an electrochromic driving circuit according to an embodiment of the present application.

[0009] Figure 3 FIG. 4 is a schematic diagram of a circuit structure of an electrochromic driving circuit according to another embodiment of the present application.

[0010] Figure 4 for Figure 1 Schematic diagram of the working process of the electrochromic device.

[0011] Main component symbols Electrochromic device: 1 Electrochromic drive circuit: 100 Control modules: 10 First pin: Pin1 Second pin: Pin2 The third pin: Pin3 Driver modules: 20 First drive unit: 21 The first output terminal: Vout1 First transistor: Q1 Second transistor: Q2 Second drive unit: 22 Second output terminal: Vout2 The third transistor: Q3 Fourth transistor: Q4 Fifth transistor: Q5 Diode: 30 First power supply: 40 Second power supply: 50 Electrochromic lenses: 200 First transparent conductive layer: 201 Second transparent conductive layer: 202 Electrochromic layer: 203 The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0012] Many smart devices (such as head-mounted display devices) are equipped with electrochromic devices. Ambient light is transmitted through the electrochromic device and then enters the human eye. The electrochromic device adjusts the intensity of ambient light when it reaches the human eye by changing its own light transmittance, so that the brightness of the display screen of the smart device can adapt to the changes in the intensity of ambient light.

[0013] See also Figure 1 The electrochromic device 1 of the embodiment of the present application includes an electrochromic driving circuit 100 and an electrochromic lens 200. The electrochromic driving circuit 100 includes a control module 10 and a driving module 20, and the driving module 20 includes a first driving unit 21 and a second driving unit 22. The control module 10 is electrically connected to the first driving unit 21 and the second driving unit 22, respectively, and is used to control the first driving unit 21 and the second driving unit 22 to output different control signals. The electrochromic lens 200 is electrically connected to the first driving unit 21 and the second driving unit 22, respectively, and the transmittance of the electrochromic lens 200 changes with the change of the control signal output by the driving module 20.

[0014] The electrochromic lens 200 includes a first transparent conductive layer 201, a second transparent conductive layer 202 and an electrochromic layer 203. The electrochromic layer 203 is located between the first transparent conductive layer 201 and the second transparent conductive layer 202. The first transparent conductive layer 201 is electrically connected to the first driving unit 21, and the second transparent conductive layer 202 is electrically connected to the second driving unit 22. When the first transparent conductive layer 201 and the second transparent conductive layer 202 receive control signals of different amplitudes, a voltage difference exists between the first transparent conductive layer 201 and the second transparent conductive layer 202, thereby generating an electric field, and the transmittance of the electrochromic layer 203 changes under the action of the electric field. Therefore, by adjusting the control signal, the electric field strength can be adjusted, thereby adjusting the transmittance of the electrochromic layer 203 (or the transmittance of the electrochromic lens 200).

[0015] See also Figure 2 , the control module 10 includes a first pin Pin1 and a second pin Pin2. The first pin Pin1 outputs a first level signal and a second level signal in a time-sharing manner, and the second pin Pin2 outputs a first level signal and a second level signal in a time-sharing manner. The first pin Pin1 and the second pin Pin2 output different level signals at the same time, that is, when the first pin Pin1 outputs a first level signal, the second pin Pin2 outputs a second level signal, and when the first pin Pin1 outputs a second level signal, the second pin Pin2 outputs a first level signal.

[0016] The first drive unit 21 and the second drive unit 22 are connected in parallel. The first drive unit 21 is electrically connected to the first pin Pin1, and the second drive unit 22 is electrically connected to the second pin Pin2. The first drive unit 21 and the second drive unit 22 output a first control signal when receiving a first level signal, and output a second control signal when receiving a second level signal.

[0017] The electrochromic drive circuit 100 also includes a second power supply 50, which is electrically connected to the control module 10 and is used to provide voltage to the control module 10. In this embodiment, the control module 10 is a microcontroller unit (MCU). After the control module 10 receives the voltage signal output by the second power supply 50, the first pin Pin1 and the second pin Pin2 output different level signals at the same time, so that the first drive unit 21 and the second drive unit 22 output different control signals after receiving different level signals. That is, when the first pin Pin1 outputs a first level signal and the second pin Pin2 outputs a second level signal, the first drive unit 21 outputs a first control signal and the second drive unit 22 outputs a second control signal; when the first pin Pin1 outputs a second level signal and the second pin Pin2 outputs a first level signal, the first drive unit 21 outputs a second control signal and the second drive unit 22 outputs a first control signal.

[0018] Please refer to Figure 1 , the first driving unit 21 has a first output terminal Vout1, and the second driving unit 22 has a second output terminal Vout2. The first driving unit 21 outputs the first control signal or the second control signal through the first output terminal Vout1, and the second driving unit 22 outputs the first control signal or the second control signal through the second output terminal Vout2. The first control signal and the second control signal are both voltage signals, and the voltage value of the first control signal is greater than the voltage value of the second control signal. The first output terminal Vout1 and the second output terminal Vout2 are electrically connected to the first transparent conductive layer 201 and the second transparent conductive layer 202 of the electrochromic lens 200, respectively. The first output terminal Vout1 and the second output terminal Vout2 output control signals of different amplitudes at the same time, so that there is a voltage difference between the first transparent conductive layer 201 and the second transparent conductive layer 202, thereby generating an electric field, and the transmittance of the electrochromic layer 203 changes under the action of the electric field.

[0019] In this embodiment, the electrochromic driving circuit 100 can work in the first working mode and the second working mode in a time-sharing manner, so that the light transmittance of the electrochromic lens 200 changes.

[0020] When the electrochromic driving circuit 100 is in the first working mode, the first pin Pin1 outputs a first level signal, and the second pin Pin2 outputs a second level signal, the first output terminal Vout1 outputs a first control signal, and the second output terminal Vout2 outputs a second control signal, so that the voltage of the first output terminal Vout1 is greater than the voltage of the second output terminal Vout2, and the transmittance of the electrochromic lens 200 gradually decreases.

[0021] When the electrochromic driving circuit 100 is in the second working mode, the first pin Pin1 outputs the second level signal, and the second pin Pin2 outputs the first level signal, the first driving unit 21 outputs the second control signal, and the second driving unit 22 outputs the first control signal, so that the voltage of the first output terminal Vout1 is less than the voltage of the second output terminal Vout2, and the transmittance of the electrochromic lens 200 gradually increases.

[0022] Please refer to Figure 2 In this embodiment, the first driving unit 21 includes a first transistor Q1 and a second transistor Q2. The first transistor Q1 and the second transistor Q2 are connected in series, a node between the first transistor Q1 and the second transistor Q2 is connected to the first output terminal Vout1, and control terminals of the first transistor Q1 and the second transistor Q2 are respectively coupled to the first pin Pin1.

[0023] The second driving unit 22 includes a third transistor Q3 and a fourth transistor Q4 which are connected in series, a node between the third transistor Q3 and the fourth transistor Q4 is connected to the second output terminal Vout2, and control terminals of the third transistor Q3 and the fourth transistor Q4 are respectively coupled to the second pin Pin2.

[0024] The first transistor Q1 is further connected in series with the third transistor Q3 , and the second transistor Q2 is further connected in series with the fourth transistor Q4 , thereby establishing an electrical connection between the first driving unit 21 and the second driving unit 22 .

[0025] In this embodiment, the first transistor Q1, the second transistor Q2, the third transistor Q3 and the fourth transistor Q4 are all metal-oxide-semiconductor field-effect transistors (MOSFET), referred to as MOS tubes. Among them, the first transistor Q1 and the third transistor Q3 are PMOS tubes, and the second transistor Q2 and the fourth transistor Q4 are NMOS tubes. The gate of the first transistor Q1 and the gate of the second transistor Q2 are electrically connected to the first pin Pin1, and the gate of the third transistor Q3 and the gate of the fourth transistor Q4 are electrically connected to the second pin Pin2. The source of the first transistor Q1 is electrically connected to the source of the third transistor Q3, and the source of the second transistor Q2 is electrically connected to the source of the fourth transistor Q4 and then grounded. The drain of the first transistor Q1 and the drain of the second transistor Q2 are jointly connected to the first output terminal Vout1, and the drain of the third transistor Q3 and the drain of the fourth transistor Q4 are jointly connected to the second output terminal Vout2.

[0026] The electrochromic driving circuit 100 further includes a fifth transistor Q5 and a first power supply 40, and the fifth transistor Q5 is connected between the first power supply 40 and the driving module 10. The control module 10 further includes a third pin Pin3, and the control end of the fifth transistor Q5 is electrically connected to the third pin Pin3. The third pin Pin3 is used to output a level signal to control the fifth transistor Q5 to be turned on or off. When the fifth transistor Q5 is turned on, the electrical connection between the first power supply 40 and the driving module 20 is established, and when the fifth transistor Q5 is turned off, the electrical connection between the first power supply 40 and the driving module 20 is disconnected.

[0027] The fifth transistor Q5 is a PMOS tube or an NMOS tube, the gate of the fifth transistor Q5 is electrically connected to the third pin Pin3, the drain of the fifth transistor Q5 is electrically connected to the first power supply 40, and the source of the fifth transistor Q5 is connected to the node between the source of the first transistor Q1 and the source of the third transistor Q2. MOS tube is a field effect tube, which controls the flow of current by changing the conductive channel of the semiconductor material by controlling the voltage input to the gate. Taking NMOS tube as an example, when the gate inputs zero voltage or negative voltage, the electric field between the gate and the channel is very small, there are no electrons or holes in the channel, and the NMOS tube is cut off. When the gate voltage inputs a positive voltage, and the voltage continues to increase, when the concentration of electrons or holes in the channel reaches a certain level, the NMOS tube is turned on.

[0028] In at least one embodiment of the present application, the fifth transistor Q5 is an NMOS. When the third pin Pin3 outputs a first level signal, the fifth transistor Q5 is turned on to establish an electrical connection between the first power supply 40 and the driving module 20; when the third pin Pin3 outputs a second level signal, the fifth transistor Q5 is turned off to disconnect the electrical connection between the first power supply 40 and the driving module 20.

[0029] In at least one embodiment of the present application, the fifth transistor Q5 is a PMOS. When the third pin Pin3 outputs a first level signal, the fifth transistor Q5 is turned off, disconnecting the electrical connection between the first power supply 40 and the driving module 20; when the third pin Pin3 outputs a second level signal, the fifth transistor Q5 is turned on, establishing an electrical connection between the first power supply 40 and the driving module 20.

[0030] Please also read Figure 1 and Figure 2 , the electrochromic driving circuit 100 of the present application is used to switch the electrochromic lens 200 between three change processes: the coloring process, the decoloring process, and the maintenance of the coloring state. The coloring process refers to the gradual decrease in the transmittance of the electrochromic lens 200 until it becomes the minimum value, and the decoloring process refers to the gradual increase in the transmittance of the electrochromic lens 200 until it becomes the maximum value. Maintaining the coloring state means that the transmittance of the electrochromic lens 200 remains constant, and the transmittance of the electrochromic lens 200 is between the maximum value and the minimum value (excluding the maximum value and the minimum value). In this embodiment, the transmittance variation range of the electrochromic lens 200 is 8%~80% (including the endpoint values), and the minimum value of the transmittance of the electrochromic lens 200 is 8%, and the maximum value is 80%. In other embodiments, the transmittance variation range of the electrochromic lens 200 may exceed the above range.

[0031] Taking the fifth transistor Q5 as an NMOS tube as an example, when the first pin Pin1 outputs a first level signal, and the second pin Pin2 and the third pin Pin3 output a second level signal, the fifth transistor Q5 is turned on to establish an electrical connection between the first power supply 40 and the driving module 20. The first transistor Q1 is turned on, and the second transistor Q2 is turned off, and the first output terminal Vout1 outputs a first control signal. The third transistor Q3 is turned off, and the fourth transistor Q4 is turned on, and the second output terminal Vout2 outputs a second control signal. After the first transparent conductive layer 201 receives the first control signal and the second transparent conductive layer 202 receives the second control signal, there is a voltage difference between the first transparent conductive layer 201 and the second transparent conductive layer 202, thereby generating an electric field, and the direction of the electric field is from the first transparent conductive layer 201 to the second transparent conductive layer 202. Since the first output terminal Vout1 is electrically connected to the first power supply 40 through the first transistor Q1 and the fifth transistor Q5, the first power supply 40 continuously provides a voltage to the first output terminal Vout1, so that an electric field continuously exists between the first transparent conductive layer 201 and the second transparent conductive layer 202. At this time, the electrochromic lens 200 is in the tinting process.

[0032] When the second pin Pin2 outputs a first level signal, and the first pin Pin1 and the third pin Pin3 output a second level signal, the fifth transistor Q5 is turned on to establish an electrical connection between the first power supply 40 and the driving module 20. The first transistor Q1 is turned off, and the second transistor Q2 is turned on, and the first output terminal Vout1 outputs a second control signal. The third transistor Q3 is turned on, the fourth transistor Q4 is turned off, and the second output terminal Vout2 outputs a first control signal. After the first transparent conductive layer 201 receives the second control signal, and the second transparent conductive layer 202 receives the first control signal, there is a voltage difference between the first transparent conductive layer 201 and the second transparent conductive layer 202, thereby generating an electric field, and the direction of the electric field is from the second transparent conductive layer 202 to the first transparent conductive layer 201. Since the second output terminal is electrically connected to the first power source 40 through the third transistor Q3 and the fifth transistor Q5, the first power source 40 continuously provides a voltage to the second output terminal Vout2, so that an electric field continuously exists between the first transparent conductive layer 201 and the second transparent conductive layer 202, but the direction of the electric field between the first transparent conductive layer 201 and the second transparent conductive layer 202 is opposite to the direction of the electric field between the first transparent conductive layer 201 and the second transparent conductive layer 202 when the electrochromic lens 200 is in a colored state. At this time, the electrochromic lens 200 is in a decoloring process.

[0033] When the second pin Pin2 outputs a second level signal, and the first pin Pin1 and the third pin Pin3 output a first level signal, the fifth transistor Q5 is turned off, and the electrical connection between the first power source 40 and the driving module 20 is disconnected. The first transistor Q1 is turned on, and the second transistor Q2 is turned off, and the first output terminal Vout1 outputs a first control signal. The third transistor Q3 is turned off, and the fourth transistor Q4 is turned on, and the second output terminal Vout2 outputs a second control signal. After the first transparent conductive layer 201 receives the first control signal and the second transparent conductive layer 202 receives the second control signal, there is a voltage difference between the first transparent conductive layer 201 and the second transparent conductive layer 202, thereby generating an electric field, and the direction of the electric field is from the first transparent conductive layer 201 to the second transparent conductive layer 202. Since the first power source 40 is not electrically connected to the driving module 20, the first output terminal Vout1 receives an instantaneous voltage, so that an instantaneous electric field is generated between the first transparent conductive layer 201 and the second conductive layer 202. At this time, the electrochromic lens 200 is in a state of maintaining coloring, and the transmittance of the electrochromic lens 200 gradually decreases until there is no voltage difference between the first transparent conductive layer 201 and the second conductive layer 202, and the transmittance of the electrochromic lens 200 remains unchanged.

[0034] See also Figure 3 In a modified embodiment of the present application, the electrochromic driving circuit 100 further includes a diode 30 and a first power supply 40, but does not include a fifth transistor Q5. The control module 10 includes a third pin Pin3. The first power supply 40 is electrically connected to the third pin Pin3, and is used to establish an electrical connection with the driving module 20 according to a level signal output by the third pin Pin3, or to disconnect the electrical connection with the driving module 20. The diode 30 is connected in series between the first power supply 40 and the first transistor Q1, and the current direction of the diode 30 is from the first power supply 40 to the first transistor Q1. When the electrochromic lens 200 is in a state of maintaining coloring, the diode 30 is used to prevent the current from flowing from the first transistor Q1 to the first power supply 40, causing the transmittance of the electrochromic lens 200 to change.

[0035] See also Figure 4In the electrochromic device 1, the electrochromic driving circuit 100 controls the change in the transmittance of the electrochromic lens 200 as follows: when the electrochromic device 1 is powered on, the first power source 40 is electrically connected to the driving module 20, and the electrochromic lens 200 is initialized to be decolored. Initialization decolorization means that the initial state of the electrochromic lens 200 is opaque, that is, when the transmittance is not the maximum value, the electrochromic lens 200 needs to be decolored to make the transmittance of the electrochromic lens 200 become the maximum value. Then, the driving module 20 is used to color the electrochromic lens 200 until the transmittance of the electrochromic lens 200 reaches the coloring condition, that is, when the transmittance of the electrochromic lens 200 meets the user's needs, the electrical connection between the first power source 40 and the driving module 20 is disconnected, so that the transmittance of the electrochromic lens 200 remains unchanged. If the electrochromic lens 200 needs to be decolorized, the first power source 40 and the driving module 20 are electrically connected, and the driving module 20 is used to decolorize the electrochromic lens 200. When the electrochromic lens 200 is decolorized, that is, the transmittance of the electrochromic lens 200 is at the maximum value, the electrical connection between the first power source 40 and the driving module 20 is disconnected, so that the electrochromic lens 200 maintains a transparent state.

[0036] In this embodiment, "first level signal" and "second level signal" are not used to indicate the type of electrical signal, but to distinguish the level of the signal. "First level signal" represents a low level, and "second level signal" represents a high level. That is, although the first pin Pin1, the second pin Pin2 and the third pin Pin3 are all used to output the first level signal in this application, it does not mean that the signal types output by the first pin Pin1, the second pin Pin2 and the third pin Pin3 are the same, and it is only used to indicate that the signals output by the first pin Pin1, the second pin Pin2 and the third pin Pin3 are all low levels. Similarly, although the first pin Pin1, the second pin Pin2 and the third pin Pin3 are all used to output the second level signal in this application, it does not mean that the signal types output by the first pin Pin1, the second pin Pin2 and the third pin Pin3 are the same, and it is only used to indicate that the signals output by the first pin Pin1, the second pin Pin2 and the third pin Pin3 are all high levels.

[0037] In summary, in the electrochromic drive circuit 100 of the present application, the first drive unit 21 is electrically connected to the first pin Pin1, and the second drive unit 22 is electrically connected to the second pin Pin2. That is, one pin of the control module 10 controls one drive unit. Compared with the prior art, the control module 10 needs to use fewer pins to control the drive module 20, and the circuit structure is simple, which is conducive to reducing the area occupied by the circuit on the printed circuit board and reducing the manufacturing cost.

[0038] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application and are not intended to be limiting of the present application. As long as they are within the spirit and scope of the present application, appropriate changes and modifications to the above embodiments are within the scope of protection claimed in the present application.

Claims

1. An electrochromic driving circuit, characterized in that: include: A control module, comprising a first pin and a second pin, wherein the first pin outputs a first level signal and a second level signal in a time-sharing manner, and the second pin outputs the first level signal and the second level signal in a time-sharing manner, and the first pin and the second pin output different level signals at the same time; as well as The driving module includes a first driving unit and a second driving unit connected in parallel, the first driving unit is electrically connected to the first pin, and the second driving unit is electrically connected to the second pin; the first driving unit and the second driving unit output a first control signal when receiving the first level signal, and the first driving unit and the second driving unit output a second control signal when receiving the second level signal.

2. The electrochromic driving circuit according to claim 1, characterized in that: The first control signal and the second control signal are both voltage signals, and the voltage value of the first control signal is greater than the voltage value of the second control signal; When the first pin outputs the first level signal and the second pin outputs the second level signal, the first driving unit outputs the first control signal and the second driving unit outputs the second control signal, so that the voltage at the output end of the first driving unit is greater than the voltage at the output end of the second driving unit; When the first pin outputs the second level signal and the second pin outputs the first level signal, the first driving unit outputs the second control signal and the second driving unit outputs the first control signal, so that the voltage at the output end of the first driving unit is less than the voltage at the output end of the second driving unit.

3. The electrochromic driving circuit according to claim 2, characterized in that: The first driving unit includes a first transistor and a second transistor, the first transistor is electrically connected to the second transistor, and the control terminals of the first transistor and the second transistor are respectively coupled to the first pin; The second driving unit includes a third transistor and a fourth transistor, the third transistor is electrically connected to the fourth transistor, and the control terminals of the third transistor and the fourth transistor are respectively coupled to the second pin; The first transistor is also connected in series with the third transistor, and the second transistor is also connected in series with the fourth transistor, so as to establish an electrical connection between the first driving unit and the second driving unit.

4. The electrochromic driving circuit according to claim 3, characterized in that: The first transistor and the third transistor are P-type metal oxide semiconductor field effect transistors, and the second transistor and the fourth transistor are N-type metal oxide semiconductor field effect transistors; The gate of the first transistor and the gate of the second transistor are electrically connected to the first pin, and the gate of the third transistor and the gate of the fourth transistor are electrically connected to the second pin; A source of the first transistor is electrically connected to a source of the third transistor, and a source of the second transistor is electrically connected to a source of the fourth transistor.

5. The electrochromic driving circuit according to claim 3, characterized in that: The electrochromic driving circuit further includes a fifth transistor and a first power supply, wherein the fifth transistor is connected between the first power supply and the driving module; The control module also includes a third pin, the control end of the fifth transistor is electrically connected to the third pin, and the third pin is used to output a level signal to control the fifth transistor to be turned on or off; when the fifth transistor is turned on, the electrical connection between the first power supply and the driving module is established, and when the fifth transistor is turned off, the electrical connection between the first power supply and the driving module is disconnected.

6. The electrochromic driving circuit according to claim 5, characterized in that: The fifth transistor is a P-type metal oxide semiconductor field effect transistor or an N-type metal oxide semiconductor field effect transistor, the gate of the fifth transistor is electrically connected to the third pin, the drain of the fifth transistor is electrically connected to the first power supply, and the source of the fifth transistor is electrically connected to both the first transistor and the third transistor.

7. The electrochromic driving circuit according to claim 6, characterized in that: If the fifth transistor is an N-type metal oxide semiconductor field effect transistor, when the third pin outputs a first level signal, the fifth transistor is turned on to establish an electrical connection between the first power supply and the driving module; when the third pin outputs a second level signal, the fifth transistor is turned off to disconnect the electrical connection between the first power supply and the driving module; If the fifth transistor is a P-type metal oxide semiconductor field effect transistor, when the third pin outputs a first level signal, the fifth transistor is turned off, disconnecting the electrical connection between the first power supply and the driving module; when the third pin outputs a second level signal, the fifth transistor is turned on, establishing the electrical connection between the first power supply and the driving module.

8. The electrochromic driving circuit according to claim 3, characterized in that: The electrochromic driving circuit further includes a diode and a first power supply, and the control module further includes a third pin. The first power supply is electrically connected to the third pin, and is used to establish an electrical connection with the driving module or disconnect the electrical connection with the driving module according to a level signal output by the third pin; The diode is connected in series between the first power supply and the first transistor. The current direction of the diode is from the first power supply to the first transistor. The diode is used to prevent the current from flowing from the first transistor to the first power supply.

9. The electrochromic driving circuit according to claim 1, characterized in that: The electrochromic driving circuit also includes a second power supply electrically connected to the control module and configured to provide voltage to the control module.

10. An electrochromic device, characterized in that: include: The electrochromic driving circuit according to any one of claims 1 to 9; The electrochromic lens is electrically connected to the driving module, and the light transmittance of the electrochromic lens changes with the change of the control signal output by the driving module.

11. The electrochromic device according to claim 10, characterized in that: The electrochromic lens comprises a first transparent conductive layer, a second transparent conductive layer and an electrochromic layer, wherein the electrochromic layer is located between the first transparent conductive layer and the second transparent conductive layer, the first transparent conductive layer is electrically connected to the first driving unit, and the second transparent conductive layer is electrically connected to the second driving unit; After the first transparent conductive layer and the second transparent conductive layer receive different control signals at the same time, an electric field is generated between the first transparent conductive layer and the second transparent conductive layer, and the transmittance of the electrochromic layer changes under the action of the electric field.

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