CN210403146U - Automatic switching circuit, adapter plate and display device - Google Patents
Automatic switching circuit, adapter plate and display device Download PDFInfo
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- CN210403146U CN210403146U CN201921536116.1U CN201921536116U CN210403146U CN 210403146 U CN210403146 U CN 210403146U CN 201921536116 U CN201921536116 U CN 201921536116U CN 210403146 U CN210403146 U CN 210403146U
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Abstract
The utility model discloses an automatic switching circuit, which comprises a detecting module, a switching module and a switching module, wherein the detecting module receives and detects analog voltage to generate corresponding control signals; the selection module is connected with the detection module and used for outputting a first reference voltage when receiving a first control signal or outputting a second reference voltage when receiving a second control signal; and the boosting module is connected with the selection module and used for boosting the reference voltage output by the selection module so as to generate direct-current regulation voltage, wherein the first reference voltage is the analog voltage, and the second reference voltage is generated after the positive source voltage is subjected to voltage conversion. The utility model also discloses a keysets and display device. The boost design under different power supply modes can be compatible, and extra correction action when the power supply mode of the display device is switched is avoided.
Description
Technical Field
The utility model relates to an integrated circuit field, concretely relates to automatic switching circuit, keysets and display device.
Background
In some small-sized display Array designs, a dc regulation voltage V is used during driving In order to stabilize a Gate In Array (GIA) ArrayDCD.c. regulated voltage VDCThe voltage is an externally supplied direct current voltage which is generally externally supplied, and the voltage value of the externally supplied direct current voltage is required to be adjustable within 2.8-10V.
Fig. 1 is a schematic view showing a structure of a conventional display device. As shown in fig. 1, the conventional display device includes a display panel 1100, a driving module 1200, a Flexible Printed Circuit (FPC) 1300, and an interposer 1400. The driving module 1200 is disposed on the display panel 1100, and configured to provide a driving signal and a data signal to the display panel 1100 so that the display panel displays an image or a video; one end of the flexible circuit board 1300 is connected to the display panel 1100, and the other end is connected to the adapter board 1400; the interposer 1400 is configured to receive a plurality of power supply voltages (including an analog voltage VCI, a digital voltage IOVCC, a positive source voltage VSP, and a negative source voltage VSN), and transmit the plurality of power supply voltages to the display panel 1100 and the driving module 1200 through the connection line and the flexible circuit board 1300 disposed thereon, so as to operate the display device. Fig. 2(a) and 2(b) show schematic diagrams of two power supply modes of a conventional signal source, respectively. As shown in fig. 2(a), the multiple supply voltages provided to the interposer 1400 in fig. 1 include two different supply modes, and in the first supply mode, there is a signal source providing two supply voltages including an analog voltage VCI and a digital voltage IOVCC; three supply voltages including a digital voltage IOVCC, a positive source voltage VSP and a negative source voltage VSN are provided by the signal source in the second supply mode.
Referring to fig. 1, the adaptor plate 1400 is provided with a voltage boost circuit 1410, and the voltage boost circuit 1410 is configured to boost an analog voltage VCI of a plurality of power supply voltages to generate the dc regulation voltage VDC. However, if the power supply mode of the second signal source 1520 in fig. 2(b) is adopted to provide a plurality of power supply voltages, the boost circuit 1410 cannot output dc voltage as its output does not have the analog voltage VCIControl voltage VDC。
The existing flexible circuit board 1300 mostly adopts a design that the first power supply mode and the second power supply mode are compatible, so that a jig or a voltage generation circuit can simultaneously provide a plurality of power supply voltages including an analog voltage VCI, a digital voltage IOVCC, a positive source voltage VSP and a negative source voltage VSN, and different power supply outputs are realized through software. In order to avoid short circuit when switching from the first power supply mode to the second power supply mode, it is defined in the chip specification that the analog voltage VCI (e.g. 2.8V) in the first power supply mode needs to be connected to the positive source voltage VSP (e.g. 5.5V) in the second power supply mode. But now the dc regulated voltage V is presentDCThe voltage can only be obtained by boosting the supply voltage VCI through the boost circuit, the problem that the analog voltage VCI is not available in the second power supply mode can not be solved, and the required direct-current regulation voltage V can not be obtainedDC。
Therefore, there is a need to provide an improved technical solution to overcome the above technical problems in the prior art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an automatic switching circuit, keysets and display device, the design of stepping up under can compatible different power supply modes has avoided display device extra correction action when carrying out the switching of power supply mode for the function of keysets is more powerful.
According to the utility model provides a pair of automatic switching circuit, a serial communication port, include: the detection module receives an analog voltage, and generates a first control signal when detecting that the analog voltage is greater than or equal to a threshold voltage, or generates a second control signal when the analog voltage is less than the threshold voltage; the selection module is connected with the detection module, receives analog voltage and positive source voltage, and outputs first reference voltage according to the analog voltage when receiving the first control signal or outputs second reference voltage according to the positive source voltage when receiving the second control signal; and the boosting module is connected with the selection module and used for boosting the reference voltage output by the selection module so as to generate direct-current regulation voltage, wherein the first reference voltage is the analog voltage, and the positive source voltage generates the second reference voltage after voltage conversion.
Preferably, the first reference voltage and the second reference voltage have the same voltage value.
Preferably, the detection module comprises: a first voltage source providing a threshold voltage; and the comparator is used for generating corresponding control signals according to the analog voltage and the threshold voltage.
Preferably, the detection module further comprises: the inverting input end of the amplifier is grounded through a sixth resistor, the non-inverting input end of the amplifier is connected with the output end of the comparator through an eighth resistor and the fourth resistor, and the output end of the amplifier outputs an amplified control signal through a ninth resistor; and the seventh resistor is connected between the inverting input end and the output end of the amplifier.
Preferably, the selection module comprises: the control end of the first switch tube receives the control signal, the first path end receives the analog voltage through the first resistor, and the second path end outputs a first reference voltage; the control end of the second switch tube receives the control signal, the first channel end receives the positive source voltage through a tenth resistor, and the second channel end outputs a second reference voltage; and a clamping unit connected to a second path end of the second switching tube and clamping the second reference voltage to be equal to the first reference voltage.
Preferably, the clamping unit includes a zener diode, an anode of the zener diode is grounded, and a cathode of the zener diode is connected to the second path terminal of the second switching tube.
Preferably, the first switch tube is an NMOS transistor, and the second switch tube is a PMOS transistor
According to the utility model provides a pair of keysets, a serial communication port, it has to integrate on the keysets: an input-output circuit that receives and outputs a plurality of supply voltages; and the automatic switching circuit is used for judging the power supply modes of the plurality of power supply voltages and selecting different power supply voltages according to the corresponding power supply modes to generate direct current control voltage.
Preferably, the plurality of supply voltages comprises an analog voltage, a positive source voltage, a negative source voltage, and a digital voltage.
According to the utility model provides a pair of display device, a serial communication port, include: a display panel for displaying image data according to the driving signal; the driving module is arranged on the display panel and provides the driving signal according to a plurality of power supply voltages and the direct current regulation voltage; one end of the flexible circuit board is fixedly connected with the display panel; the output end of the adapter plate is connected with the other end of the flexible circuit board, and the input end of the adapter plate receives a plurality of power supply voltages, outputs the plurality of power supply voltages and outputs the direct current regulation voltage according to the power supply voltages; and a voltage generation circuit that provides the plurality of supply voltages.
The utility model has the advantages that: the utility model discloses set up the automatic switch-over circuit on the keysets, through the magnitude of voltage of comparison analog voltage and threshold voltage, can listen display device's power supply mode to under the effect of clamping unit or voltage stabilizing unit, select one of suitable supply voltage as the required reference voltage that steps up, produce direct current regulation and control voltage. The boost design under different power supply modes is compatible, extra correction action when the power supply mode is switched by the display device is avoided, and the function of the adapter plate is more powerful.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a schematic view showing a structure of a conventional display device;
FIGS. 2(a) and 2(b) are schematic diagrams showing two power supply modes of a conventional signal source, respectively;
fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 4 shows a block diagram of an automatic switching circuit provided in an embodiment of the present invention;
fig. 5 is a circuit diagram illustrating a detection module and a selection module in an automatic switching circuit according to an embodiment of the present invention;
fig. 6 shows a circuit diagram of a voltage boosting module in an automatic switching circuit provided by an embodiment of the present invention.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
The present invention will be described in detail below with reference to the accompanying drawings.
Fig. 3 is a schematic structural diagram of a display device according to an embodiment of the present invention.
As shown in fig. 3, in the present embodiment, the display device includes: the display device includes a display panel 2100, a driving module 2200, a flexible circuit board 2300, an interposer 2400, and a voltage generation circuit 2500.
Among them, the display panel 2100 displays image data according to a driving signal.
The driving module 2200 is disposed on the display panel 2100 and provides a driving signal according to a plurality of power supply voltages and a dc regulation voltage.
In this embodiment, the driving module 2200 causes the display panel 2100 to display an image or a video by applying a driving signal and a data signal to the display panel 2100. A driving module IC of a display device such as a mobile phone typically includes a source Driver IC (source Driver IC) and a gate Driver IC (gate Driver IC). The source driver may supply a data signal corresponding to an image to a target pixel included in the display panel in order to display the image on the display panel. At this time, the Source driver may generate the data signal by receiving a Positive Source Voltage (Positive Source Voltage) and a Negative Source Voltage (Negative Source Voltage) from the power supply device.
Preferably, the display device further needs the following power supply voltage when performing data processing: one is an analog voltage VCI (about 2.8V) for the supply of the system; one is a digital voltage IOVCC for data transfer; a DC regulated voltage VDCFor stabilizing the gate drive array.
One end of the flexible circuit board 2300 is fixedly connected to the display panel 2100.
In this embodiment, the flexible circuit board 2300 and the display panel are fixedly connected by the fog (flexible On glass) process, that is, the flexible circuit board is directly fixed On the electrode at the edge of the liquid crystal glass of the display panel 2100, so as to achieve rapid temperature rise, rapid cooling, accurate temperature control, and the like.
The output end of the adapter plate 2400 is connected to the other end of the flexible circuit board 2300, the input end receives a plurality of supply voltages, the adapter plate 2400 outputs the plurality of supply voltages, and outputs a dc regulation voltage V according to the supply voltagesDC。
In this embodiment, the input end of the flexible circuit board 2300 may be configured as a pluggable plug structure, and the electrical connection between the input end of the flexible circuit board 2300 and the output end of the interposer 2400 is realized through the pluggable plug structure.
The adapter plate 2400 is provided with an automatic switching circuit 2410 and an input/output circuit 2420. The automatic switching circuit 2410 determines the power supply modes of the plurality of power supply voltages and selects different power supply voltages according to the corresponding power supply modes to generate a dc control voltage. The input-output circuit 2420 receives and outputs a plurality of supply voltages.
Further, the plurality of supply voltages includes an analog voltage VCI, a digital voltage IOVCC, a positive source voltage VSP, and a negative source voltage VSN.
Further, the auto-switching circuit 2410 includes a detecting module 2411, a selecting module 2412 and a boosting module 2413 connected in sequence.
The detecting module 2411 has an input end connected to the input end of the analog voltage VCI, receives the analog voltage VCI, and generates a first control signal when detecting that the analog voltage VCI is greater than or equal to a predetermined threshold voltage (e.g., 2.5V), or generates a second control signal when detecting that the analog voltage VCI is less than the predetermined threshold voltage (e.g., 2.5V).
Alternatively, the voltage value of the threshold voltage may be adjustable as long as it can be distinguished whether the analog voltage VCI is a voltage input such as 2.8V.
An input end of the selection module 2412 is connected to an output end of the detection module 2411 to receive a corresponding control signal output by the detection module 2411; the other input terminals are connected to the analog voltage input terminal and the positive source voltage input terminal to receive the analog voltage VCI and the positive source voltage VSP, and the selection module 2412 is configured to output a first reference voltage according to the analog voltage VCI when receiving the first control signal and output a second reference voltage according to the positive source voltage VSP when receiving the second control signal.
Preferably, the first reference voltage and the second reference voltage have equal voltage values. In this embodiment, the first reference voltage may be directly output by the analog voltage VCI, and the second reference voltage may be output after being stabilized or clamped by the positive source voltage VSP.
The input end of the voltage boosting module 2413 is connected to the output end of the selection module 2412, and is configured to boost the reference voltage output by the selection module 2412 to generate a dc regulation voltage.
Referring to fig. 4, fig. 4 is a block diagram illustrating an automatic switching circuit according to an embodiment of the present invention.
As shown in fig. 4 and in conjunction with fig. 3, when the automatic switching circuit 2410 operates, it first performs voltage detection to determine whether the voltage value of the analog voltage VCI is greater than or equal to the threshold voltage,when the analog voltage VCI is greater than or equal to the threshold voltage, the analog voltage VCI is determined to be in an active state, the voltage generation circuit 2500 provides a plurality of power supply voltages in the first power supply mode, and the voltage boost circuit 2413 directly boosts the analog voltage VCI to generate the dc regulation voltage VDC. When the analog voltage VCI is less than the threshold voltage, it is determined that the analog voltage VCI is in an invalid state, the voltage generation circuit 2500 provides a plurality of power supply voltages in the second power supply mode, and because the voltage generation circuit 2500 does not output the analog voltage VCI in the second power supply mode, the voltage of the positive source voltage VSP output in the second power supply mode is stabilized to obtain a second reference voltage having the same potential as the analog voltage VCI, and then the voltage boosting circuit 2413 boosts the second reference voltage to generate the dc regulation voltage VDC。
Fig. 5 is a circuit diagram of a detection module and a selection module in an automatic switching circuit according to an embodiment of the present invention.
As shown in fig. 5, in the auto-switching circuit 2410, the detecting module 2411 includes: a first voltage source V1 for providing a threshold voltage; the comparator U1 generates a corresponding control signal according to the analog voltage VCI and the threshold voltage; and an amplifier U2 for amplifying the voltage of the control signal outputted from the comparator U1 and outputting the amplified control signal.
Specifically, the inverting input terminal of the comparator U1 is connected to the first voltage source V1 through the second resistor R2, the non-inverting input terminal of the comparator U1 is connected to the input terminal of the analog voltage VCI through the third resistor R3, and the output terminal of the comparator U1 is connected to the fourth resistor R4; the inverting input end of the amplifier U2 is grounded through a sixth resistor R6, the non-inverting input end of the amplifier U2 is connected with the output end of the comparator U1 through an eighth resistor R8 and a fourth resistor R4, the output end of the amplifier U2 outputs an amplified control signal through a ninth resistor R9, and meanwhile, a seventh resistor R7 is connected between the inverting input end and the output end of the amplifier U2 in series.
In the automatic switching circuit 2410, the selection module 2412 includes: the first switching tube Q1 is turned on when receiving the first control signal, so as to transmit the analog voltage VCI to the output end; the second switching tube Q2 is turned on when receiving the second control signal, so as to transmit the positive source voltage VSP to the output end; and the clamping circuit is used for clamping the positive source voltage VSP output by the second switching tube Q2 to be equal to the first reference voltage, namely the analog voltage VCI.
Preferably, in a preferred embodiment of the present invention, the clamping circuit is preferably a 2.8V zener diode D1. In other embodiments of the present invention, the clamping circuit may also be a switching circuit with clamping function to convert the output voltage of the second switch transistor Q2 to be equal to the analog voltage VCI.
Specifically, a control end of the first switch tube Q1 is connected to an output end of the detection module 2411 for receiving a control signal, a first path end is connected to an analog voltage input end through a first resistor R1 for receiving an analog voltage VCI, and a second path end outputs a first reference voltage; a control end of the second switch tube Q2 is connected to the output end of the detection module 2411 for receiving the control signal, a first path end is connected to the positive source voltage input end through a tenth resistor R10 for receiving the positive source voltage VSP, and a second path end outputs a second reference voltage; the cathode of the zener diode D1 is connected to the second path terminal of the second switching tube Q2, and the anode is grounded.
It should be noted that, as shown in fig. 5, when performing a function test of the automatic switching circuit, the second path terminals of the first switching tube Q1 and the second switching tube Q2 may be grounded through the fifth resistor R5 and the eleventh resistor R11, respectively, and the fifth resistor R5 and the eleventh resistor R11 may serve as corresponding equivalent loads, or represent a voltage boosting circuit; meanwhile, the analog voltage input terminal may be replaced by two power supply terminals VCI and VCI _1 and a selection switch S1. To facilitate circuit testing.
Further, the first switch Q1 is an NMOS transistor, and the second switch Q2 is a PMOS transistor.
When the selection switch S1 is disposed at the first power supply terminal VCI, that is, the inverting input terminal of the comparator U1 receives a voltage signal of, for example, 2.8V, and at this time, the voltage of the in-phase terminal of the comparator U1 is greater than the inverting terminal voltage, so that a first control signal of high level is output, and after the first control signal is voltage-amplified by the amplifier U2, the first switch Q1 is respectively controlled to be turned on, and the second switch Q2 is turned off, so that the selection module 2412 outputs the analog voltage VCI as the first reference voltage.
When the selection switch S1 is disposed at the second power supply terminal VCI _1, that is, the inverting input terminal of the comparator U1 receives a voltage signal of, for example, 0V, and at this time, the voltage at the non-inverting terminal of the comparator U1 is smaller than the voltage at the inverting terminal, so that a second control signal with a low level is output, after the second control signal is voltage-amplified by the amplifier U2, the first switch tube Q1 is respectively controlled to be turned off, the second switch tube Q2 is controlled to be turned on, and the selection module 2412 outputs a positive source voltage VDP after voltage stabilization or clamping as a second reference voltage.
Fig. 6 shows a circuit diagram of a voltage boosting module in an automatic switching circuit provided by an embodiment of the present invention.
As shown in fig. 6, in the present embodiment, the boosting module 2413 in the automatic switching circuit 2410 includes: and a DC-DC conversion chip U3. The enable pin EN and the input pin IN of the conversion chip U3 are IN short circuit, and are connected with the analog voltage input pin VCI through a first inductor L1, grounded through a first capacitor C1 and a second capacitor C2 which are connected IN parallel, and connected with the anode of a diode D2 through a second inductor L2; the grounding pin GND is connected with a ground wire; the energy conversion pin LX is connected to the anode of the diode D2; the cathode of the diode D2 is connected with a direct current regulation voltage V through a third inductor L3DCAn output end; the cathode of the diode D2 is grounded through a third capacitor C3, a fourth capacitor C4 and a twelfth resistor R12 which are connected in parallel, and the cathode of the diode D2 is also grounded through a thirteenth resistor R13, an adjustable resistor VR1 and a fourteenth resistor R14 which are connected in series in sequence; the regulation terminal of the adjustable resistor VR1 is connected to the feedback pin FB of the conversion chip U3.
An output of the voltage generation circuit 2500 is connected to an input of the interposer 2400 for providing a plurality of supply voltages.
In this embodiment, the voltage generation circuit 2500 has a first power supply mode and a second power supply mode. When the analog voltage VCI is valid, the power supply mode of the corresponding voltage generation circuit 2500 is the first power supply mode; when the analog voltage VCI is inactive, the power supply mode of the corresponding voltage generation circuit 2500 is the second power supply mode. Preferably, the voltage generation circuit 2500 may implement switching between the first power supply mode and the second power supply mode by software setting.
The utility model discloses set up automatic switch-over circuit on the keysets, can listen display device's power supply mode to under the effect of clamping unit or voltage stabilizing unit, select one of suitable power supply voltage as the required reference voltage that steps up, produce direct current regulation and control voltage. The boost design under different power supply modes is compatible, extra correction action when the power supply mode is switched by the display device is avoided, and the function of the adapter plate is more powerful.
It should be noted that, in this document, the contained terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (10)
1. An automatic switching circuit, comprising:
the detection module receives an analog voltage, and generates a first control signal when detecting that the analog voltage is greater than or equal to a threshold voltage, or generates a second control signal when the analog voltage is less than the threshold voltage;
the selection module is connected with the detection module, receives analog voltage and positive source voltage, and outputs first reference voltage according to the analog voltage when receiving the first control signal or outputs second reference voltage according to the positive source voltage when receiving the second control signal; and
a boosting module connected with the selection module for boosting the reference voltage output by the selection module to generate a DC regulation voltage,
the first reference voltage is the analog voltage, and the positive source voltage generates the second reference voltage after voltage conversion.
2. The automatic switching circuit according to claim 1, wherein the first reference voltage and the second reference voltage have equal voltage values.
3. The automatic switching circuit of claim 1, wherein the detection module comprises:
a first voltage source providing a threshold voltage;
and the comparator generates a corresponding control signal according to the analog voltage and the threshold voltage.
4. The automatic switching circuit of claim 3, wherein the detection module further comprises:
the inverting input end of the amplifier is grounded through a sixth resistor, the non-inverting input end of the amplifier is connected with the output end of the comparator through an eighth resistor and the fourth resistor, and the output end of the amplifier outputs an amplified control signal through a ninth resistor; and
and the seventh resistor is connected between the inverting input end and the output end of the amplifier.
5. The automatic switching circuit of claim 1, wherein the selection module comprises:
the control end of the first switch tube receives the control signal, the first path end receives the analog voltage through the first resistor, and the second path end outputs a first reference voltage;
the control end of the second switch tube receives the control signal, the first channel end receives the positive source voltage through a tenth resistor, and the second channel end outputs a second reference voltage; and
and the clamping unit is connected with a second path end of the second switching tube and clamps the second reference voltage to be equal to the first reference voltage.
6. The automatic switching circuit of claim 5, wherein the clamping unit comprises a zener diode, the anode is grounded, and the cathode is connected to the second pass terminal of the second switching tube.
7. The automatic switching circuit of claim 5, wherein the first switch transistor is an NMOS transistor and the second switch transistor is a PMOS transistor.
8. An adapter plate, characterized in that, integrated on the adapter plate has:
an input-output circuit that receives and outputs a plurality of supply voltages; and
the automatic switching circuit of any one of claims 1 to 7, determining a supply mode of the plurality of supply voltages and selecting different supply voltages according to the respective supply mode to generate the DC control voltage.
9. The patch panel of claim 8, wherein the plurality of supply voltages comprises an analog voltage, a positive source voltage, a negative source voltage, and a digital voltage.
10. A display device, comprising:
a display panel for displaying image data according to the driving signal;
the driving module is arranged on the display panel and provides the driving signal according to a plurality of power supply voltages and the direct current regulation voltage;
one end of the flexible circuit board is fixedly connected with the display panel;
the interposer of claim 9, an output terminal connected to another terminal of the flexible circuit board, an input terminal receiving a plurality of supply voltages, outputting the plurality of supply voltages, and outputting the dc regulated voltage according to the supply voltages; and
a voltage generation circuit that provides the plurality of supply voltages.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113342105A (en) * | 2021-06-03 | 2021-09-03 | 昆山国显光电有限公司 | Power supply adjusting device and method of display panel and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113342105A (en) * | 2021-06-03 | 2021-09-03 | 昆山国显光电有限公司 | Power supply adjusting device and method of display panel and display device |
| CN113342105B (en) * | 2021-06-03 | 2022-11-11 | 昆山国显光电有限公司 | Power supply adjusting device and method of display panel and display device |
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