CN212137373U - Power supply switching circuit and electronic device - Google Patents
Power supply switching circuit and electronic device Download PDFInfo
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- CN212137373U CN212137373U CN202020805247.1U CN202020805247U CN212137373U CN 212137373 U CN212137373 U CN 212137373U CN 202020805247 U CN202020805247 U CN 202020805247U CN 212137373 U CN212137373 U CN 212137373U
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Abstract
The utility model provides a power supply switching circuit and electron device, this power supply switching circuit includes: the first controlled switch is connected between the second input end and the output end, the second controlled switch is connected between the third controlled switch and the output end, and the third controlled switch is connected between the second controlled switch and the first input end; the controlled end of the first controlled switch, the controlled end of the second controlled switch and the controlled end of the third controlled switch are connected to the second input end; when the second input end is not connected with the second power supply, the first controlled switch is switched off, and the second controlled switch and the third controlled switch are switched on; when the second input end is connected with the second power supply, the first controlled switch is switched on, and the second controlled switch and the third controlled switch are switched off. The power supply switching circuit can accurately control the switching of the power supply with low power consumption, greatly improves the use experience of users and reduces the energy consumption of loss.
Description
Technical Field
The present application relates to the field of power control technologies, and in particular, to a power supply switching circuit and an electronic device.
Background
At present, batteries are arranged in a plurality of electric appliances, the batteries are used for supplying power when no external power supply is available, and the external power supply is used for supplying power when the external power supply is available. Therefore, the circuit is required to be capable of automatically selecting the corresponding power supply according to whether the external power supply is connected.
Most of the existing power supply switching circuits use diodes and MOS tubes for switching, but because the diodes have larger power consumption, the circuits have larger heat generation and lower efficiency; and cannot be normally used if the battery voltage is greater than the external voltage. Therefore, how to design a power switching circuit with accurate power switching and low circuit power consumption is a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a power supply switching circuit and an electronic device, which can prevent the internal power supply from being higher than the external power supply, and the external power supply can not be used normally.
A first aspect of the present invention provides a power supply switching circuit, which includes a first input terminal for connecting a first power supply, a second input terminal for connecting a second power supply, and an output terminal for outputting electric energy, wherein the power supply switching circuit outputs electric energy from the first power supply when the second power supply is not connected, and outputs electric energy from the second power supply when the second power supply is connected; the power supply switching circuit comprises a first controlled switch, a second controlled switch and a third controlled switch, and the power supply switching circuit comprises:
the first controlled switch is connected between the second input end and the output end, the second controlled switch is connected between the third controlled switch and the output end, and the third controlled switch is connected between the second controlled switch and the first input end;
the controlled end of the first controlled switch, the controlled end of the second controlled switch and the controlled end of the third controlled switch are connected to the second input end;
when the second input end is not connected with a second power supply, the first controlled switch is turned off, and the second controlled switch and the third controlled switch are turned on; when the second input end is connected with a second power supply, the first controlled switch is switched on, and the second controlled switch and the third controlled switch are switched off.
The second aspect of the present invention also provides an electronic device, including:
a load;
a first power supply;
the power supply switching circuit is connected to the first power supply and the load;
the power supply switching circuit is also used for connecting a second power supply, and the first power supply outputs electric energy when the power supply switching circuit is not connected with the second power supply, and the second power supply outputs electric energy when the power supply switching circuit is connected with the second power supply.
Compared with the prior art, the utility model discloses beneficial effect lies in: through set up power supply switching circuit between load and first power, power supply switching circuit is by first power output electric energy when not connecting the second power, by when connecting the second power output electric energy, can be accurate and the switching of the little control power of circuit consumption through this power supply switching circuit, greatly improved user's use experience and the energy consumption that reduces the loss.
Drawings
Fig. 1 is a circuit schematic diagram of an embodiment of a power supply switching circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present invention;
fig. 3 is another schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
Referring to fig. 1, fig. 1 is a circuit schematic diagram of an embodiment of a power supply switching circuit according to an embodiment of the present invention.
As shown in fig. 1, the power supply switching circuit includes a first controlled switch 101, a second controlled switch 102, a third controlled switch 103, a first input terminal 201, a second input terminal 202, and an output terminal 203.
The first input terminal 201 is configured to be connected to a first power source VBAT, and the second input terminal 202 is configured to be connected to a second power source VIN.
Illustratively, the first power source VBAT may be an internal power source, such as a battery; the second power supply may be a power adapter capable of rectifying and transforming the commercial power, and the power adapter may be located inside or outside the electronic device.
Specifically, when the second input terminal 202 is connected to the second power source VIN, the second power source VIN outputs electric energy; when the second input terminal 202 is not connected to the second power source VIN, the first power source VBAT outputs power.
It is understood that when the second power source VIN has power output, the second input terminal 202 is determined to be connected to the second power source VIN.
In some embodiments, the first controlled switch 101 is connected between the second input 202 and the output 203; the second controlled switch 102 is connected between the third controlled switch 103 and the output terminal 203; the third controlled switch is connected between the second controlled switch 102 and the first input terminal 201; the controlled terminal of the first controlled switch 101, the controlled terminal of the second controlled switch 102 and the controlled terminal of the third controlled switch 103 are all connected to the second input terminal 202. The first controlled switch 101, the second controlled switch 102 and the third controlled switch 103 respectively include a MOS transistor Q1, a MOS transistor Q2 and a MOS transistor Q3.
Illustratively, when the second input terminal 202 is connected to the second power source VIN, the first controlled switch 101 is turned on, the second controlled switch 102 and the third controlled switch 103 are turned off, the first power source VBAT stops supplying power, and the second power source VIN outputs power through the output terminal 203 to supply power to the load.
Illustratively, when the second input terminal 202 is not connected to the second power source VIN, the first controlled switch 101 is turned off, and both the second controlled switch 102 and the third controlled switch 103 are turned on, so that the power is outputted from the first power source VBAT and outputted through the output terminal 203 to supply power to the load.
The power supply switching circuit can accurately control the switching of the power supply with low power consumption, greatly improves the use experience of users and reduces the energy consumption of loss.
In some embodiments, the controlled terminal of the switch of the second controlled switch 102 is connected to ground through a first resistor R1. When the third controlled switch 103 is turned on, a voltage difference exists between the source and the gate of the MOS transistor Q2 of the second controlled switch 102, so that the second controlled switch 102 can be turned on.
In some embodiments, the power supply switching circuit comprises a first level flipping circuit 301, and the first controlled switch 101 is connected to the second input terminal 202 through the first level flipping circuit 301. When the second input terminal 202 is connected to the second power source VIN, the first level flipping circuit 301 outputs a low level to the controlled terminal of the first controlled switch 101, so that the first controlled switch 101 is turned on, and the power provided by the second power source VIN can flow to the output terminal 203. The first level flip circuit 301 outputs a low level when connected to the second power source VIN, and outputs a high level when not connected to the second power source VIN. The first level flip circuit 301 outputs a low level to control the conduction of the MOS transistor Q1, and further control the conduction of the first controlled switch, so as to rapidly communicate the second power supply VIN.
Specifically, the first level flip circuit 301 includes a fourth controlled switch 104, one end of the fourth controlled switch 104 is connected to the controlled terminal of the first controlled switch 101, the other end is grounded, and the controlled terminal of the fourth controlled switch 104 is connected to the second input terminal 202.
In another embodiment, the controlled terminal of the fourth controlled switch 104 is connected to the second input terminal 202 through a ninth resistor R9.
Illustratively, when the second input terminal 202 is connected to the second power supply, the fourth controlled switch 104 is turned on, so that the first level-reversing circuit 301 outputs a low level, so that the controlled terminal of the first controlled switch 101 is at a low level, one terminal of the first controlled switch 101 is connected to the second input terminal 202 at a high level, a voltage difference exists between the gate and the source of the MOS transistor Q1, so that the MOS transistor Q1 is turned on, and the power supplied by the second power supply VIN is turned on to the output terminal 203 to supply power to the load.
In some embodiments, the power supply switching circuit further includes a level follower circuit 302, and the controlled terminal of the third controlled switch 103 is connected to the second input terminal VIN through the level follower circuit 302. The output of the level follower circuit 302 includes a low level or a high level, and when the second input terminal 202 is not connected to the second power source VIN, the level follower circuit 302 outputs the low level; when the second input terminal 202 is connected to the second power source VIN, the level follower circuit 302 outputs a high level. By determining whether the output of the level follower circuit 302 is low level or high level, and further controlling the on or off of the third controlled switch 103, the efficiency of the power supply switching circuit is improved.
Illustratively, when the second input terminal 202 is not connected to the second power source VIN, the level follower circuit 302 outputs a low level to the controlled terminal of the third controlled switch 103 to turn on the third controlled switch 103, and when the third controlled switch 103 is turned on, the second controlled switch 102 is turned on, so that the power provided by the first power source connected to the first input terminal 201 flows through the third controlled switch 103 and the second controlled switch 102 to the output terminal 203, and is output through the output terminal 203 to provide the power to the load. The accurate control output 203 outputs the power supplied by the first power source VBAT.
Illustratively, when the second input terminal 202 is connected to the second power source VIN, the level follower circuit 302 outputs a high level to the controlled terminal of the third controlled switch 103, so that the gate voltage of the MOS transistor Q3 of the third controlled switch 103 is equal to the source voltage, the MOS transistor Q3 is turned off, that is, the third controlled switch 103 is turned off, and the third controlled switch 103 is turned off to turn off the second controlled switch 102, so that the power of the first power source cannot be output to the output terminal 203. The accurate control output terminal 203 outputs the power provided by the second power source VIN.
In some embodiments, the level follower circuit 302 includes a fifth controlled switch 105 and a second level flip circuit 303; one end of the fifth controlled switch 105 is connected to the controlled end of the third controlled switch 103, the other end is grounded, and the controlled end of the fifth controlled switch 105 is connected to the second input terminal 202 through the second level flip circuit 303. Wherein the fifth controlled switch 105 comprises a transistor Q5.
In some embodiments, the controlled terminal of the fifth controlled switch 105 is connected to one terminal of the second level shifter 303 through a second resistor R2, and the controlled terminal of the fifth controlled switch 105 is also connected to ground through a fifth resistor R5.
Illustratively, when the second input terminal 202 is not connected to the second power source VIN, the second level flipping circuit 302 outputs a high level to the controlled terminal of the fifth controlled switch 105, turns on the fifth controlled switch 105 to ground the controlled terminal of the third controlled switch 103, and a voltage difference exists between the gate and the source of the MOS transistor Q3 of the third controlled switch 103, so that the third controlled switch 103 is turned on. When the second input terminal 202 is not connected to the second power source VIN, the third controlled switch 103 is accurately controlled to be turned on.
Illustratively, when the second input terminal 202 is connected to the second power source VIN, the second level-reversing circuit 302 outputs a low level to the controlled terminal of the fifth controlled switch 105, so that the fifth controlled switch 105 is turned off, and the third controlled switch 103 is turned off when the fifth controlled switch 105 is turned off. When the second input terminal 202 is connected to the second power source VIN, the third controlled switch 103 is accurately controlled to be turned off.
In some embodiments, the second level-shifter circuit 302 includes a sixth controlled switch 106, one end of the sixth controlled switch 106 is connected to the first input terminal 201 and the controlled terminal of the fifth controlled switch 105 through a second resistor R2, the other end is connected to ground, and the controlled terminal of the sixth controlled switch 106 is connected to the second input terminal 202. Wherein the sixth controlled switch comprises a transistor Q6.
In other embodiments, the sixth controlled switch 106 is connected to the first input terminal 201 through a sixth resistor R6, the sixth controlled switch 106 is connected to the second input terminal 202 through a seventh resistor R7, and the controlled terminal of the sixth controlled switch 106 is connected to the ground through an eighth resistor R8.
For example, when the second input terminal 202 is not connected to the second power source VIN, the voltages of the base and emitter of the transistor Q6 of the sixth controlled switch 106 are equal, so that the transistor Q6 is turned off, i.e., the sixth controlled switch 106 is turned off, and the controlled terminal of the fifth controlled switch 105 is set to high level and turned on. When the second input terminal 202 is not connected to the second power source VIN, the transistor Q6 is turned off, and the fifth controlled switch 105 is accurately controlled to be turned on.
Illustratively, when the second input terminal 202 is connected to the second power source VIN, a voltage difference exists between the base and the emitter of the transistor Q6 of the sixth controlled switch 106, such that the transistor Q6 is turned on, i.e., the sixth controlled switch 106 is turned on, and the controlled terminal of the fifth controlled switch 105 is grounded and turned off. When the second input terminal 202 is connected to the second power source VIN, the transistor Q6 is turned on, so as to accurately control the fifth controlled switch 105 to be turned off.
In some embodiments, the controlled terminal of the first controlled switch 101 is connected to the output terminal 203 of the power supply switching circuit through a third resistor R3, and when the fourth controlled switch 104 is turned on, the controlled terminal of the first controlled switch 101 is grounded.
In other embodiments, the controlled terminal of the third controlled switch 103 is connected to the first input terminal 201 through a fourth resistor R4, the controlled terminal of the third controlled switch 103 is grounded when the fifth controlled switch 105 is turned on, and the controlled terminal of the third controlled switch 103 is connected to the first power source VBAT of the first input terminal 201 through a fourth resistor R4 when the fifth controlled switch is turned off. When the fifth controlled switch 105 is turned on, the fourth resistor R4 is present to prevent the first power source VBAT from being short-circuited.
In some embodiments, the first controlled switch 101, the second controlled switch 102 and the third controlled switch 103 are MOS transistors; the fourth controlled switch 104, the fifth controlled switch 105 and the sixth controlled switch 106 are transistors.
Illustratively, the first controlled switch 101 is a MOS transistor Q1, the second controlled switch 102 is a MOS transistor Q2, the third controlled switch 103 is a MOS transistor Q3, the fourth controlled switch 104 is a transistor Q4, the fifth controlled switch 105 is a transistor Q5, and the sixth controlled switch 106 is a transistor Q6. The MOS transistor Q1, the MOS transistor Q2, or the MOS transistor Q3 is turned on when a voltage difference exists between the gate and the source, that is, the first controlled switch 101, the second controlled switch 102, or the third controlled switch 103 is turned on when a voltage difference exists between the gate and the source; when the base voltages of the transistor Q4, the transistor Q5, and the transistor Q6 are greater than the emitter voltage, the transistor Q4, the transistor Q5, or the transistor Q6 is turned on, that is, the fourth controlled switch 104, the fifth controlled switch 105, or the sixth controlled switch 106 is turned on.
In some embodiments, when the second input terminal 202 is connected to the second power source VIN, the fourth controlled switch 104 is turned on, and the fourth controlled switch 104 is turned on to turn on the first controlled switch 101, so that the power provided by the second power source flows out from the output terminal 203. When the second input terminal 202 is connected to the second power source VIN, the sixth controlled switch 106 is turned on to make the output voltage to the controlled terminal of the fifth controlled switch 105 low, so that the fifth controlled switch 105 is turned off, the third controlled switch 103 is turned off, so that the power provided by the first power source cannot be output to the output terminal 203, and the third controlled switch 103 is turned off to make the second controlled switch turned off, thereby preventing the second power source from charging the first power source. When the second input terminal 202 is connected to the second power source VIN, the power supply switching circuit can accurately switch the power supply to the second power source VIN.
In other embodiments, when the second input terminal 202 is not connected to the second power source VIN, the first controlled switch 101, the fourth controlled switch 104 and the sixth controlled switch 106 are turned off; when the sixth controlled switch 106 is turned off, the controlled terminal of the fifth controlled switch 105 is switched to a high level, so that the fifth controlled switch 105 is turned on, so that the controlled terminal of the third controlled switch 103 is grounded, so that the third controlled switch 103 is turned on, so that the second controlled switch 102 is turned on, and the electric energy provided by the first power source flows to the output terminal 203 through the third controlled switch 103 and the second controlled switch 102, so as to be used by the load. When the second input terminal 202 is not connected to the second power source VIN, the electric energy provided by the first power source VBAT can be accurately output for the load.
Please refer to fig. 2 and fig. 3 in combination with the foregoing embodiment, in which fig. 2 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and fig. 3 is a schematic structural diagram of another electronic device according to an embodiment of the present invention.
As shown in fig. 2 and 3, the electronic apparatus includes:
a load 410;
a first power supply 420;
and a power supply switching circuit 430, configured to be connected to the first power supply 420 and the load 410.
Specifically, the power supply switching circuit is further configured to be connected to a second power source 440, and the first power source 420 outputs power when the second power source 440 is not connected, and the second power source 440 outputs power when the second power source 440 is connected.
Illustratively, the electronic device includes a power interface, the power switching circuit is connected to the power interface, and when the power interface is connected to the second power source, the second power source 440 supplies power to the load 410 through the power switching circuit 430. When the power interface is not connected to the second power source, the first power source 420 supplies power to the load 410 through the power switching circuit 430.
Illustratively, the electronic device comprises at least one of a lamp, a sound box and a fan. For example, when the electronic device is a fan, the load thereof includes a motor.
The power supply switching circuit provided by the embodiment of the specification is provided with the power supply switching circuit in front of the load and the first power supply, the power supply switching circuit outputs electric energy by the first power supply when the power supply switching circuit is not connected with the second power supply, and outputs electric energy by the second power supply when the power supply switching circuit is connected with the second power supply.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. A power supply switching circuit is characterized by comprising a first input end used for being connected with a first power supply, a second input end used for being connected with a second power supply, and an output end used for outputting electric energy, wherein when the second power supply is not connected, the first power supply outputs electric energy, and when the second power supply is connected, the second power supply outputs electric energy; the power supply switching circuit comprises a first controlled switch, a second controlled switch and a third controlled switch, and the power supply switching circuit comprises:
the first controlled switch is connected between the second input end and the output end, the second controlled switch is connected between the third controlled switch and the output end, and the third controlled switch is connected between the second controlled switch and the first input end;
the controlled end of the first controlled switch, the controlled end of the second controlled switch and the controlled end of the third controlled switch are connected to the second input end;
when the second input end is not connected with a second power supply, the first controlled switch is turned off, and the second controlled switch and the third controlled switch are turned on; when the second input end is connected with a second power supply, the first controlled switch is switched on, and the second controlled switch and the third controlled switch are switched off.
2. The power supply switching circuit according to claim 1, wherein the power supply switching circuit further comprises a first level flip circuit, and the controlled terminal of the first controlled switch is connected to the second input terminal through the first level flip circuit;
when the second input end is connected with a second power supply, the first level flip circuit outputs a low level to the controlled end of the first controlled switch so as to enable the first controlled switch to be conducted;
the controlled end of the second controlled switch is grounded through the first resistor.
3. The power supply switching circuit of claim 2, wherein the first level flipping circuit comprises a fourth controlled switch;
one end of the fourth controlled switch is connected to the controlled end of the first controlled switch, the other end of the fourth controlled switch is grounded, and the controlled end of the fourth controlled switch is connected to the second input end.
4. The power supply switching circuit of claim 1, wherein the power supply switching circuit further comprises a level follower circuit, through which the controlled terminal of the third controlled switch is connected to the second input terminal;
when the second input end is not connected with a second power supply, the level follower circuit outputs a low level to the controlled end of the third controlled switch to enable the third controlled switch to be conducted, and when the third controlled switch is conducted, the second controlled switch is conducted;
when the second input end is connected with a second power supply, the level follower circuit enables the third controlled switch to be cut off, and when the third controlled switch is cut off, the second controlled switch is cut off.
5. The power supply switching circuit according to claim 4, wherein the level follower circuit comprises a fifth controlled switch and a second level flip circuit, wherein one end of the fifth controlled switch is connected to the controlled terminal of the third controlled switch, the other end of the fifth controlled switch is connected to ground, and the controlled terminal of the fifth controlled switch is connected to the second input terminal through the second level flip circuit;
when the second input end is not connected with a second power supply, the second level flip circuit outputs a high level to the controlled end of the fifth controlled switch, and the fifth controlled switch is turned on to enable the controlled end of the third controlled switch to be grounded, so that the third controlled switch is turned on;
when the second input end is connected with a second power supply, the second level flip circuit outputs a low level to the controlled end of the fifth controlled switch, so that the fifth controlled switch is turned off, and when the fifth controlled switch is turned off, the third controlled switch is turned off.
6. The power supply switching circuit according to claim 5, wherein the second level flip circuit comprises a sixth controlled switch, one end of the sixth controlled switch is connected to the first input end and the controlled end of the fifth controlled switch through a second resistor, the other end of the sixth controlled switch is grounded, and the controlled end of the sixth controlled switch is connected to the second input end;
when the second input end is not connected with a second power supply, the sixth controlled switch is switched off, and the controlled end of the fifth controlled switch is set to be at a high level and is switched on;
when the second input end is connected with a second power supply, the sixth controlled switch is conducted, and the controlled end of the fifth controlled switch is grounded and cut off.
7. The power supply switching circuit of claim 3 wherein the controlled terminal of the first controlled switch is connected to the output terminal of the power supply switching circuit through a third resistor, and the controlled terminal of the first controlled switch is grounded when the fourth controlled switch is turned on.
8. The power supply switching circuit according to claim 5, wherein the controlled terminal of the third controlled switch is connected to the first input terminal through a fourth resistor, the controlled terminal of the third controlled switch is grounded when the fifth controlled switch is turned on, and the controlled terminal of the third controlled switch is connected to the first power supply of the first input terminal through the fourth resistor when the fifth controlled switch is turned off.
9. The power supply switching circuit according to any one of claims 1 to 8, wherein the first controlled switch, the second controlled switch and the third controlled switch are MOS transistors, and the fourth controlled switch, the fifth controlled switch and the sixth controlled switch are triodes.
10. An electronic device, comprising:
a load;
a first power supply;
the power supply switching circuit according to any one of claims 1 to 9, connected to the first power supply and the load;
the power supply switching circuit is also used for connecting a second power supply, and the first power supply outputs electric energy when the power supply switching circuit is not connected with the second power supply, and the second power supply outputs electric energy when the power supply switching circuit is connected with the second power supply.
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| CN202020805247.1U CN212137373U (en) | 2020-05-13 | 2020-05-13 | Power supply switching circuit and electronic device |
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| CN202020805247.1U CN212137373U (en) | 2020-05-13 | 2020-05-13 | Power supply switching circuit and electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113763898A (en) * | 2021-08-31 | 2021-12-07 | 惠科股份有限公司 | Control circuit, driving method thereof and display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113763898A (en) * | 2021-08-31 | 2021-12-07 | 惠科股份有限公司 | Control circuit, driving method thereof and display device |
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