CN216531282U - Driving and scanning circuit and electronic equipment - Google Patents
Driving and scanning circuit and electronic equipment Download PDFInfo
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- CN216531282U CN216531282U CN202122725755.6U CN202122725755U CN216531282U CN 216531282 U CN216531282 U CN 216531282U CN 202122725755 U CN202122725755 U CN 202122725755U CN 216531282 U CN216531282 U CN 216531282U
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Abstract
The application discloses a driving and scanning circuit, which comprises a first light-emitting module, a second light-emitting module, a clamping module, a key module and a control module. The first light-emitting module is used for being in a lighting state when the first end of the control module outputs the first level. The second light-emitting module is used for being in a lighting state when the first end of the control module outputs the second level. The clamping module is used for clamping a branch composed of the first light-emitting module and the second light-emitting module when the first end of the control module is used as an input end, so that the first light-emitting module and the second light-emitting module are in an off state. The key module is used for generating a trigger voltage and inputting the trigger voltage to the first end of the control module when the first end of the control module is used as an input end and the key module is triggered, so that the control module determines that the key module is triggered according to the trigger voltage. Through the mode, the utilization rate of the IO port of the single chip microcomputer can be improved.
Description
Technical Field
The present disclosure relates to electronic circuits, and particularly to a driving and scanning circuit and an electronic device.
Background
The singlechip is also called a singlechip microcontroller, and is mainly applied to the control field, electronic products contacted in our lives almost all use the singlechip, and at present, the use quantity of global singlechips is far more than the sum of a PC and other computers.
Meanwhile, as the user demands more and more, the electronic products are also required to realize more functions. The realization of different functions is usually related to the IO port of the single chip, such as the driving function for the LED lamp, or the scanning function for the key.
However, different functions usually require different IO ports, resulting in a lower utilization of the IO ports.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application aims at providing a drive and scanning circuit and electronic equipment, and the application can improve the utilization rate of the IO port of the single chip microcomputer.
To achieve the above object, in a first aspect, the present application provides a driving and scanning circuit, including:
the device comprises a first light-emitting module, a second light-emitting module, a clamping module, a key module and a control module;
the first end of the first light-emitting module is connected with the first end of the second light-emitting module, the first end of the key module and the first end of the control module, the second end of the first light-emitting module is connected with the first end of the clamping module and the second end of the key module, the second end of the second light-emitting module is connected with the second end of the clamping module, the third end of the clamping module is connected with a first power supply, and the fourth end of the clamping module is grounded;
the first light-emitting module is used for being in a lighting state when the first end of the control module outputs a first level;
the second light-emitting module is used for being in a lighting state when the first end of the control module outputs a second level;
the clamping module is used for clamping a branch composed of the first light-emitting module and the second light-emitting module when the first end of the control module is used as an input end, so that the first light-emitting module and the second light-emitting module are in an off state;
the key module is used for generating a trigger voltage and inputting the trigger voltage to the first end of the control module when the first end of the control module is used as an input end and the key module is triggered, so that the control module determines that the key module is triggered according to the trigger voltage.
In an alternative mode, the first light-emitting module includes a first light-emitting diode;
the anode of the first light emitting diode is connected with the first end of the clamping module and the second end of the key module, and the cathode of the first light emitting diode is connected with the first end of the second light emitting module, the first end of the key module and the first end of the control module.
In an alternative manner, the second light emitting module includes a second light emitting diode;
the anode of the second light emitting diode is connected with the first end of the first light emitting module, the first end of the key module and the first end of the control module, and the cathode of the second light emitting diode is connected with the second end of the clamping module.
In an alternative manner, the clamping module includes a first diode;
the anode of the first diode is connected with the second end of the first light-emitting module and the first power supply, the cathode of the first diode is connected with the second end of the second light-emitting module, and the cathode of the first diode is grounded.
In an optional mode, the clamping module further comprises a first resistor and a second resistor;
the first end of the first resistor is connected with the first power supply, the second end of the first resistor is connected with the anode of the first diode, the first end of the second resistor is connected with the cathode of the first diode, and the second end of the second resistor is grounded.
In an alternative mode, the key module comprises a key;
the first end of the key is connected with the first end of the first light-emitting module, the first end of the second light-emitting module and the first end of the control module, and the second end of the key is connected with the second end of the first light-emitting module and the first end of the clamping module.
In an optional manner, the key module further includes a third resistor and a second diode;
the first end of the third resistor is connected with the second end of the key, the second end of the third resistor is connected with the anode of the second diode, and the cathode of the second diode is connected with the second end of the first light-emitting module and the second end of the clamping module.
In an alternative mode, the control module comprises a first capacitor and a control unit;
the first end of the control unit is connected with the first end of the first light-emitting module, the first end of the second light-emitting module and the first end of the key module, the second end of the control unit is connected with the first end of the first capacitor and the first power supply, and the second end of the first capacitor and the third end of the control unit are grounded.
In a second aspect, the present application provides an electronic device comprising the driving and scanning circuit as described above.
The beneficial effects of the embodiment of the application are that: the application provides a driving and scanning circuit, which comprises a first light-emitting module, a second light-emitting module, a clamping module, a key module and a control module. When the first end of the control module outputs a first level, the first light-emitting module is lightened, and when the first end of the control module outputs a second level, the second light-emitting module is lightened, and the first end of the control module is used as an input end, the control module can determine whether the key module is triggered according to the received trigger voltage. Therefore, the control process of the first light-emitting module and the second light-emitting module can be realized through the first end of the control module, and the scanning process of the key module can also be realized. Therefore, when the control module comprises the single chip microcomputer, IO of the single chip microcomputer can realize different functions, and the utilization rate of IO of the single chip microcomputer is improved.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the figures in which like reference numerals refer to similar elements and which are not to scale unless otherwise specified.
Fig. 1 is a schematic structural diagram of a driving and scanning circuit provided in an embodiment of the present application;
fig. 2 is a schematic circuit structure diagram of a driving and scanning circuit according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a driving and scanning circuit according to an embodiment of the present disclosure. As shown in fig. 1, the driving and scanning circuit includes a first light emitting module 10, a second light emitting module 20, a clamping module 30, a key module 40 and a control module 50. The first end of the first light-emitting module 10 is connected to the first end of the second light-emitting module 20, the first end of the key module 40 and the first end of the control module 50, the second end of the first light-emitting module 10 is connected to the first end of the clamping module 30 and the second end of the key module 40, the second end of the second light-emitting module 20 is connected to the second end of the clamping module 30, the third end of the clamping module 30 is connected to the first power supply V1, and the fourth end of the clamping module 30 is grounded to GND.
Specifically, the first light-emitting module 10 is configured to be in a lighting state when the first terminal of the control module 50 outputs the first level. The second light emitting module 20 is configured to be in a lighting state when the first terminal of the control module 50 outputs the second level. The clamping module 30 is configured to clamp a branch formed by the first light-emitting module 10 and the second light-emitting module 20 when the first end of the control module 50 is used as an input end, so that the first light-emitting module 10 and the second light-emitting module 20 are in an off state. The key module 40 is configured to generate a trigger voltage and input the trigger voltage to the first end of the control module 50 when the first end of the control module 50 is used as an input end and the key module 40 is triggered, so that the control module 50 determines that the key module 40 is triggered according to the trigger voltage.
It can be seen that in this embodiment, the first end of the control module 50 is capable of performing several functions:
the first function is: the first terminal of the control module 50 is used as an output terminal and outputs a first level. At this time, the first level should be a low level signal with respect to the first power V1, and the voltage difference between the first power V1 and the first level can cause the first light-emitting module 10 to be lighted. That is, the driving process of the first light emitting module 10 is completed.
The second function is as follows: the first terminal of the control module 50 is used as an output terminal and outputs the second level. At this time, the second level should be a high level signal with respect to the ground GND, and the voltage difference between the second level and the ground GND can cause the second light emitting module 20 to be lighted. That is, the driving process of the second light emitting module 20 is completed.
The third function is: a first terminal of the control module 50 is used as an input terminal. At this time, when the key module 40 is pressed, the first terminal of the control module 50 can receive the corresponding trigger voltage, and then it may be determined that the key module 40 is triggered. That is, the scanning process of the key module 40 is completed. Meanwhile, the clamping module 30 can clamp the circuit formed by the first light emitting module 10 and the second light emitting module 20 to keep the first light emitting module 10 and the second light emitting module 20 turned off, so as to ensure that the control module 50 only executes the scanning function of the key module 40 at this time.
In summary, the first end of the control module 50 can control the first light-emitting module 10 and the second light-emitting module 20, and can also scan the key module 40. Then when this control module 50 includes the singlechip, control module 50's first end can be an IO mouth of singlechip, and the IO mouth of singlechip can realize different functions promptly, is favorable to improving the utilization ratio of singlechip IO mouth. Therefore, the resource of the single chip microcomputer can be saved, and the cost is reduced.
In one embodiment, as shown in fig. 2, the first light emitting module 10 includes a first light emitting diode LE 1. An anode of the first light emitting diode LE1 is connected to the first end of the clamping module 30 and the second end of the key module 40, and a cathode of the first light emitting diode LE1 is connected to the first end of the second light emitting module 20, the first end of the key module 40, and the first end of the control module 50. Wherein, the cathode of the first light emitting diode LE1 is a first end of the first light emitting module 10, and the anode of the first light emitting diode LE1 is a second end of the first light emitting module 10.
Specifically, when the voltage between the anode and the cathode of the first light emitting diode LE1 exceeds its turn-on voltage, the first light emitting diode LE1 is lit. The brightness of the first light emitting diode LE1 is determined by the magnitude of the current flowing through the first light emitting diode LE1, the greater the current, the stronger the brightness, and the smaller the current, the weaker the brightness.
In one embodiment, the second light module 20 includes a second light emitting diode LE 2. An anode of the second light emitting diode LE2 is connected to the first end of the first light emitting module 10, the first end of the key module 40 and the first end of the control module 50, and a cathode of the second light emitting diode LE2 is connected to the second end of the clamping module 30. The anode of the second light emitting diode LE2 is the first end of the second light emitting module 20, and the cathode of the second light emitting diode LE2 is the second end of the second light emitting module 20.
Likewise, when the voltage between the anode and cathode of the second light emitting diode LE2 exceeds its turn-on voltage, the second light emitting diode LE2 is lit. The brightness of the second light emitting diode LE2 is determined by the magnitude of the current flowing through the second light emitting diode LE2, the greater the current, the stronger the brightness, and the smaller the current, the weaker the brightness.
In one embodiment, the clamping module 30 includes a first diode D1. An anode of the first diode D1 is connected to the second terminal of the first light emitting module 10 and the first power source V1, a cathode of the first diode D1 is connected to the second terminal of the second light emitting module 20, and a cathode of the first diode D1 is further connected to the ground GND.
In this embodiment, when the first diode D1 is turned on, the voltage across the first diode D1 is the turn-on voltage vD 1. Thus, when the first terminal of the control module 50 is used as an input terminal, the voltage across the branch consisting of the first led LE1 and the second led LE2 can be clamped to the voltage vD1, so that the voltage across the first led LE1 is less than the turn-on voltage thereof, and the voltage across the second led LE2 is less than the turn-on voltage thereof. Thus, the first light emitting diode LE1 and the second light emitting diode LE2 are both in the off state.
In one embodiment, the clamping module 30 further includes a first resistor R1 and a second resistor R2. A first end of the first resistor R1 is connected to the first power source V1, a second end of the first resistor R1 is connected to an anode of the first diode D1, a first end of the second resistor R2 is connected to a cathode of the first diode D1, and a second end of the second resistor R2 is grounded to GND.
An anode of the first diode D1 is a first end of the clamping module 30, a cathode of the first diode D1 is a second end of the clamping module 30, a first end of the first resistor R1 is a third end of the clamping module 30, and a second end of the second resistor R2 is a fourth end of the clamping module 30.
Specifically, the first resistor R1 and the second resistor R2 are used for dividing the voltage of the first power source V1 to provide the turn-on voltage for the first diode D1. Meanwhile, when the first light emitting diode LE1 is turned on, the first resistor R1 can also play a role of current limiting, so as to prevent the first light emitting diode LE1 from being damaged due to excessive current. And when the second light emitting diode LE2 is turned on, the second resistor R2 can also play a role of current limiting, so as to prevent the second light emitting diode LE2 from being damaged due to excessive current.
In one embodiment, the key module 40 includes a key K1. A first end of the key K1 is connected to the first end of the first light emitting module 10, the first end of the second light emitting module 20 and the first end of the control module 50, and a second end of the key K1 is connected to the second end of the first light emitting module 10 and the first end of the clamping module 30.
Specifically, when the key K1 is pressed and the key module 40 is triggered, the control module 50 can receive a trigger voltage.
In one embodiment, the key module 40 further includes a third resistor R3 and a second diode D2. A first end of the third resistor R3 is connected to the second end of the key K1, a second end of the third resistor R3 is connected to an anode of the second diode D2, and a cathode of the second diode D2 is connected to the second end of the first light-emitting module 10 and the second end of the clamping module 30.
The first terminal of the key K1 is the first terminal of the key module 40, and the cathode of the second diode D2 is the second terminal of the key module 40.
In this embodiment, the third resistor R3 is used to limit the current to prevent the control module 50 from being damaged by excessive current when the key K1 is pressed. The second diode D2 can prevent the control module 50 from being adversely affected by voltage fluctuation in a circuit connected to the cathode of the second diode D2, so as to protect the control module 50 and improve the stability of the control module 50.
In one embodiment, the control module 50 includes a first capacitor C1 and a control unit U1. A first end of the control unit U1 is connected to the first end of the first light-emitting module 10, the first end of the second light-emitting module 20, and the first end of the key module 40, a second end of the control unit U1 is connected to the first end of the first capacitor C1 and the first power supply V1, and a second end of the first capacitor C1 and a third end of the control unit U1 are both grounded to GND.
Wherein, the first end of the control unit U1 is the first end of the control module 50. The first end of the control unit U1 is the 3 rd pin of the control unit U1, the second end of the control unit U1 is the 1 st pin of the control unit U1, and the third end of the control unit U1 is the 8 th pin of the control unit U1.
In this embodiment, the first capacitor C1 is used for filtering the voltage input to the first power supply V1 and filtering out the high frequency interference in the voltage of the first power supply V1.
For a better understanding of the present application, the operating principle of the circuit arrangement shown in fig. 2 is described below.
When the first light emitting diode LE1 needs to be lit, the 3 rd pin of the control unit U1 is set to an output state, and outputs a low level signal. The first power supply V1 forms a loop to ground GND through the first resistor R1, the first light emitting diode LE1 and the 3 rd pin of the control unit U1. The first light emitting diode LE1 obtains the turn-on voltage, and the first light emitting diode LE1 is lit.
When the second light emitting diode LE2 needs to be lit, the 3 rd pin of the control unit U1 is set to an output state, and outputs a high level signal. The high level signal passes through the second light emitting diode LE2 and the second resistor R2 to ground GND, forming a loop. The second light emitting diode LE2 obtains the turn-on voltage, and the second light emitting diode LE2 is lit.
When the key K1 needs to be scanned, the 3 rd pin of the control unit U1 is set to an input state, and the control unit U1 enables the resistor R4 existing between the 3 rd pin and the 8 th pin therein.
On the one hand, the first power source V1 is connected to ground GND through the first resistor R1, the first diode D1 and the second resistor R2, and the first diode D1 is turned on in the forward direction. The voltage across the light emitting branch after the first led LE1 and the second led LE2 are connected in series is the on voltage vD1 of the first diode D1. Generally, the turn-on voltage vLE1 of the first light emitting diode LE1 and the turn-on voltage vLE2 of the second light emitting diode LE2 are greater than the turn-on voltage vD1 of the first diode D1 of the first diode D1. In other words, at this time, the voltage across the first light emitting diode LE1 is less than its turn-on voltage vLE1, and the first light emitting diode LE1 is in an off state.
For example, in one embodiment, the on-voltage vD1 of the first diode D1 is 0.6V, and the on-voltage vLE1 of the first light emitting diode LE1 is 1.5V. Due to the clamping action of the first diode D1, the voltage across the first light emitting diode LE1 is less than 0.6V, i.e., less than 1.5V, and the first light emitting diode LE1 is not lit, i.e., is in an off state.
Meanwhile, the first power source V1 also forms a loop to ground GND through the 1 st pin of the control unit U1, the resistor R4, the 3 rd pin of the control unit U1, the second light emitting diode LE2 and the second resistor R2, so that the second light emitting diode LE2 obtains a turn-on voltage to be turned on. However, since the resistance value of the resistor R4 is large, the current flowing through the second light emitting diode LE2 is small, the brightness of the second light emitting diode LE2 is weak, and it can be considered that the second light emitting diode LE2 is also in an off state.
On the other hand, from the loop of the first power source V1, the first resistor R1, the first diode D1 and the first resistor R2, the voltage at the connection point P1 between the first resistor R1 and the first diode D1 and the voltage at the connection point P2 between the second resistor R2 and the first diode D1 are:
vP1＝(v1－vD1)×r2÷(r1+r2)+vD1 (1)
vP2＝(v1－vD1)×r2÷(r1+r2) (2)
wherein vP1 is the voltage at the connection point P1, vP2 is the voltage at the connection point P2, V1 is the voltage of the first power supply V1, R1 is the resistance of the first resistor R1, and R2 is the resistance of the second resistor R2.
When the key K1 is not pressed, a loop formed by the 1 st pin of the control unit U1, the resistor R4, the 3 rd pin of the control unit U1, the second led LE2, and the second resistor R2 may obtain that a voltage v31 obtained by the 3 rd pin of the control unit U1 is a voltage of the connection point P2 plus an on-state voltage vLE2 of the first led LE2, that is, a voltage v31 is:
v31＝vP2+vLE2＝(v1－vD1)×r2÷(r1+r2)+vLE2 (3)
when the key K1 is pressed, the voltage received by the 3 rd pin of the control unit U1, which is the sum of the voltage at the connection point P1, the voltage of the first diode D1 and the voltage of the third resistor R3, is obtained by the first power source V1, the 1 st pin of the control unit U1, the resistor R4, the 3 rd pin of the control unit U1, the key K1, the third resistor R3 and the loop from the first diode D2 to the connection point P1. When the resistance value of the third resistor R3 is set to be large, the current flowing through the third resistor R3 is small, and the voltage across the third resistor R3 can be ignored. Therefore, the voltage v32 obtained at the 3 rd pin of the control unit U1 at this time is:
v32＝vP1+vD2＝(v1－vD1)×r2÷(r1+r2)+vD1+vD2 (4)
wherein vD2 is the turn-on voltage of the second diode D2.
In summary, when the key K1 is not pressed, the voltage v31 is obtained by the pin 3 of the control unit U1 according to the formulas (2) and (3). When the key K1 is pressed, the voltage V32 is obtained from the pin 3 of the control unit U1 according to formulas (1) and (4), wherein the voltage V32 is the trigger voltage. Meanwhile, when vLE2 ≠ vD1+ vD2, v31 ≠ v 32. Then by selecting the appropriate second led LE2, first diode D1 and second diode D2 to satisfy vLE2 ≠ vD1+ vD2, it can be achieved that the control unit U1 determines whether the key K1 is pressed or not according to the voltage obtained at its 3 rd pin. Specifically, when the 3 rd pin of the control unit U1 obtains the voltage v32, the control unit U1 determines that the key K1 is pressed; when the 3 rd pin of the control unit U1 acquires the voltage v31, the control unit U1 determines that the key K1 is not pressed, thereby implementing a scanning process for the key K1.
In this embodiment, the pin 3 of the control unit U1 can simultaneously implement the control of the first light emitting diode LE1, the control of the second light emitting diode LE2 and the scanning of the key K1. The utilization rate of the 3 rd pin of the control unit U1 is high, so that the resource of the control unit U1 can be saved, and the purpose of reducing the cost can be achieved.
An embodiment of the present application further provides an electronic device including the driving and scanning circuit as in any embodiment of the present application.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; within the context of the present application, where technical features in the above embodiments or in different embodiments can also be combined, the steps can be implemented in any order and there are many other variations of the different aspects of the present application as described above, which are not provided in detail for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A driving and scanning circuit, comprising:
the device comprises a first light-emitting module, a second light-emitting module, a clamping module, a key module and a control module;
the first end of the first light-emitting module is connected with the first end of the second light-emitting module, the first end of the key module and the first end of the control module, the second end of the first light-emitting module is connected with the first end of the clamping module and the second end of the key module, the second end of the second light-emitting module is connected with the second end of the clamping module, the third end of the clamping module is connected with a first power supply, and the fourth end of the clamping module is grounded;
the first light-emitting module is used for being in a lighting state when the first end of the control module outputs a first level;
the second light-emitting module is used for being in a lighting state when the first end of the control module outputs a second level;
the clamping module is used for clamping a branch composed of the first light-emitting module and the second light-emitting module when the first end of the control module is used as an input end, so that the first light-emitting module and the second light-emitting module are in an off state;
the key module is used for generating a trigger voltage and inputting the trigger voltage to the first end of the control module when the first end of the control module is used as an input end and the key module is triggered, so that the control module determines that the key module is triggered according to the trigger voltage.
2. The driving and scanning circuit of claim 1,
the first light-emitting module comprises a first light-emitting diode;
the anode of the first light emitting diode is connected with the first end of the clamping module and the second end of the key module, and the cathode of the first light emitting diode is connected with the first end of the second light emitting module, the first end of the key module and the first end of the control module.
3. The driving and scanning circuit of claim 1,
the second light emitting module comprises a second light emitting diode;
the anode of the second light emitting diode is connected with the first end of the first light emitting module, the first end of the key module and the first end of the control module, and the cathode of the second light emitting diode is connected with the second end of the clamping module.
4. The driving and scanning circuit of claim 1,
the clamping module comprises a first diode;
the anode of the first diode is connected with the second end of the first light-emitting module and the first power supply, the cathode of the first diode is connected with the second end of the second light-emitting module, and the cathode of the first diode is grounded.
5. The driving and scanning circuit of claim 4,
the clamping module further comprises a first resistor and a second resistor;
the first end of the first resistor is connected with the first power supply, the second end of the first resistor is connected with the anode of the first diode, the first end of the second resistor is connected with the cathode of the first diode, and the second end of the second resistor is grounded.
6. The driving and scanning circuit of claim 1,
the key module comprises keys;
the first end of the key is connected with the first end of the first light-emitting module, the first end of the second light-emitting module and the first end of the control module, and the second end of the key is connected with the second end of the first light-emitting module and the first end of the clamping module.
7. The driving and scanning circuit of claim 6,
the key module also comprises a third resistor and a second diode;
the first end of the third resistor is connected with the second end of the key, the second end of the third resistor is connected with the anode of the second diode, and the cathode of the second diode is connected with the second end of the first light-emitting module and the second end of the clamping module.
8. The driving and scanning circuit of claim 1,
the control module comprises a first capacitor and a control unit;
the first end of the control unit is connected with the first end of the first light-emitting module, the first end of the second light-emitting module and the first end of the key module, the second end of the control unit is connected with the first end of the first capacitor and the first power supply, and the second end of the first capacitor and the third end of the control unit are grounded.
9. An electronic device comprising the driving and scanning circuit according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122725755.6U CN216531282U (en) | 2021-11-08 | 2021-11-08 | Driving and scanning circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122725755.6U CN216531282U (en) | 2021-11-08 | 2021-11-08 | Driving and scanning circuit and electronic equipment |
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| CN216531282U true CN216531282U (en) | 2022-05-13 |
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| CN202122725755.6U Active CN216531282U (en) | 2021-11-08 | 2021-11-08 | Driving and scanning circuit and electronic equipment |
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2021
- 2021-11-08 CN CN202122725755.6U patent/CN216531282U/en active Active
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