CN208986673U - Electric power management circuit and display device - Google Patents
Electric power management circuit and display device Download PDFInfo
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- CN208986673U CN208986673U CN201821267689.4U CN201821267689U CN208986673U CN 208986673 U CN208986673 U CN 208986673U CN 201821267689 U CN201821267689 U CN 201821267689U CN 208986673 U CN208986673 U CN 208986673U
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- 239000003990 capacitor Substances 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 15
- 230000007812 deficiency Effects 0.000 abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
This application discloses a kind of electric power management circuit and display device, the electric power management circuit includes: the first power module and second power supply module, for providing driving voltage to the display device；And switching circuit, wherein the switching circuit includes: comparison module, is connect with first power module and second power supply module to receive the driving voltage, for the driving voltage to be compared with reference voltage, provides comparison result；Switching module, it is connected with the comparison module to receive the comparison result, control signal is provided to first power module or second power supply module according to the comparison result, open first power module or second power supply module, wherein, the driving voltage of the second power supply module is greater than the driving voltage of first power module.It can be effectively suppressed and show the different phenomenon of picture caused by driving voltage deficiency, improve the display quality of display device.
Description
Technical field
The utility model relates to electric power management circuit field, relate more specifically to a kind of electric power management circuit and display dress
It sets.
Background technique
Liquid crystal display (Liquid Crystal Display, LCD) is the orientation using liquid crystal molecule in electric field
Under the action of the phenomenon that changing change the display device of light source light transmittance.High-quality, small in size and function is shown due to having
Low advantage is consumed, liquid crystal display has been widely used for the display terminal of such as mobile phone and the large scale of such as flat panel TV is aobvious
Show in panel.
Existing liquid crystal display mainly includes display panel and provides the printing electricity of various working signals for display panel
Road plate.Display panel includes multiple pixel units arranged into an array, and each pixel unit includes thin film transistor (TFT) and pixel electricity
Pole, the grid of thin film transistor (TFT) are connected by grid line with gate driving circuit, the source electrode of thin film transistor (TFT) pass through source electrode line and
Source electrode drive circuit is connected, and drain electrode is connected with pixel electrode.Gate driving circuit is used to scan a plurality of grid line in order, so that
The thin film transistor (TFT) of corresponding line is connected；Source electrode drive circuit is used to apply and show on the pixel electrode in thin film transistor (TFT) conducting
Registration is according to corresponding gray scale voltage.
Power module is integrated on printed circuit board, power module is used to provide drive to the source electrode drive circuit of display panel
Dynamic voltage.Because different model display panel it is of different sizes, included at least on the printed circuit board of existing liquid crystal display
First power module and second power supply module, when the driving voltage that the first power module provides is not enough to drive display panel,
Switch to second power supply module.Existing liquid crystal display switches the work shape of two kinds of power modules in such a way that resistance switches
State, existing switching mode have switching delay, cannot achieve real-time switching, and driving voltage deficiency causes the display different phenomenon of picture,
The problem of influencing the display quality of display device.
Therefore, it is necessary to improve to the prior art, providing one kind can be according to display panel auto switching electric source mould
The switching circuit of block.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of switching circuit, it can auto switching electric source module.
One side according to the present utility model provides a kind of electric power management circuit for display device, the power management
Circuit includes: the first power module and second power supply module, for providing driving voltage to the display device；And switching electricity
Road, wherein the switching circuit includes: comparison module, is connect with first power module and second power supply module to receive
The driving voltage provides comparison result for the driving voltage to be compared with reference voltage；Switching module, with institute
It states comparison module to be connected to receive the comparison result, according to the comparison result to first power module or second source
Module provides control signal, opens first power module or second power supply module, wherein the institute of the second power supply module
State the driving voltage that driving voltage is greater than first power module.
Preferably, when the driving voltage is less than the reference voltage, the switching circuit opens the second source
Module closes first power module；When the driving voltage is greater than the reference voltage, the switching circuit opens institute
The first power module is stated, the second power supply module is closed.
Preferably, the driving voltage includes the first driving voltage and the second driving voltage, wherein the first driving electricity
It presses opposite with the polarity of the second driving voltage.
Preferably, the reference voltage includes the first reference voltage and the second reference voltage, wherein described first with reference to electricity
Pressure is identical with the first driving voltage polarity, and second reference voltage is identical with the second driving voltage polarity.
Preferably, when first driving voltage is less than first reference voltage and second driving voltage is less than institute
When stating the second reference voltage, the comparison module provides effective level signal.
Preferably, the comparison module includes: the first comparison module, and first input end receives first reference voltage,
Second input terminal receives first driving voltage, and output end is for providing the first level signal；Second comparison module, first is defeated
Enter end and receive second driving voltage, the second input terminal receives second reference voltage, and output end is for providing the second electricity
Ordinary mail number.
Preferably, first comparison module includes: first comparator, and normal phase input end receives described first with reference to electricity
Pressure, inverting input terminal receive first driving voltage, first switch tube, the output end company of control terminal and the first comparator
It connects, the first path terminal ground connection, alternate path end is connect with the switching module, the first power supply, for being the first comparator
Working power is provided；For first resistor to the 4th resistance, the first resistor is connected to the first reference voltage input terminal and described the
Between the normal phase input end of one comparator, the second resistance is connected to the first driving voltage input terminal and the first comparator
Inverting input terminal between, the anode of the first end of the 3rd resistor and first power supply is connect, the 3rd resistor
Second end is connect with the alternate path end of the first switch tube, and the 4th resistance is connected to the output of the first comparator
Between end and the control terminal of the first switch tube；First capacitor to third capacitor, the first end of the first capacitor with it is described
First resistor is connected with the intermediate node of the normal phase input end of the first comparator, second end ground connection, second capacitor
First end is connect with the intermediate node of the second resistance and the inverting input terminal of the first comparator, second end ground connection, institute
Third capacitance connection is stated between the first path terminal and alternate path end of the first switch tube.
Preferably, second comparison module includes: the second comparator, and normal phase input end receives the second driving electricity
Pressure, inverting input terminal receive second reference voltage, second switch, the output end company of control terminal and second comparator
It connects, the first path terminal ground connection, alternate path end is connect with the switching module, second source, for being second comparator
Working power is provided；5th resistance to the 8th resistance, the 5th resistance are connected to the second driving voltage input terminal and described the
Between the normal phase input end of two comparators, the 6th resistance is connected to the second reference voltage input terminal and second comparator
Inverting input terminal between, the first end of the 7th resistance is connect with the anode of the second source, the 7th resistance
Second end is connect with the alternate path end of the second switch, and the 8th resistance is connected to the output of second comparator
Between end and the control terminal of the second switch；4th capacitor to the 6th capacitor, the first end of the 4th capacitor with it is described
5th resistance is connected with the intermediate node of the normal phase input end of second comparator, second end ground connection, the 5th capacitor
First end is connect with the intermediate node of the inverting input terminal of the 6th resistance and second comparator, second end ground connection, institute
The 6th capacitance connection is stated between the first path terminal and alternate path end of the second switch.
Preferably, the switching module includes: triode, first diode and the second diode, the 9th resistance to the tenth
One resistance and third power supply and the 4th power supply, wherein the cathode of the first diode is defeated with first comparison module
Outlet connection is to receive first level signal, and anode is connect by the tenth resistance with the base stage of the triode, institute
The cathode for stating the second diode is connect to receive the second electrical level signal with the output end of second comparison module, anode with
The first diode is connected with the intermediate node of the tenth resistance, anode and the 9th resistance of the third power supply
First end connection, cathode ground connection, the second end of the 9th resistance and the section of the first diode and second diode
The anode of point connection, the 4th power supply is connect with the first end of the eleventh resistor, cathode ground connection, the eleventh resistor
Second end connect with the collector of the triode, the emitter of triode ground connection, the collector of the triode with
The intermediate node of the eleventh resistor is used to provide the described control signal.
Another aspect according to the present utility model provides a kind of display device, comprising: display panel；And above-mentioned power supply
Circuit is managed, the electric power management circuit is used to provide driving voltage to the display panel.
Electric power management circuit provided by the utility model and display device, wherein electric power management circuit includes the first electricity
Source module, second power supply module and conversion circuit, wherein the driving voltage of second power supply module is greater than the first power module
Driving voltage.Electric power management circuit work when, conversion circuit receive the first power module driving voltage, with reference voltage into
Row compares, and when driving voltage is less than reference voltage, conversion circuit opens the bigger second power supply module of driving voltage, closes the
One power module improves driving voltage, can be effectively suppressed and shows the different phenomenon of picture caused by driving voltage deficiency, improves display device
Display quality.
Detailed description of the invention
By referring to the drawings to the description of the utility model embodiment, above-mentioned and other mesh of the utility model
, feature and advantage will be apparent from.
Fig. 1 shows the structural schematic diagram of switching circuit according to the present utility model.
Fig. 2 shows the circuit diagrams of switching circuit according to the present utility model.
Specific embodiment
Hereinafter reference will be made to the drawings is more fully described the utility model.In various figures, identical element is using similar
Appended drawing reference indicate.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.In addition, may in figure
Certain well known parts are not shown.
Many specific details of the utility model, such as the structure of component, material, size, place are described hereinafter
Science and engineering skill and technology, to be more clearly understood that the utility model.But just as the skilled person will understand,
The utility model can not be realized according to these specific details.
It should be appreciated that in the following description, " circuit ", which refers to, passes through electrical connection by least one element or sub-circuit
Or the galvanic circle that electromagnetism connects and composes.When title element or another element of circuit " being connected to " or element/circuit " being connected to "
When between two nodes, it can be directly coupled or connected to another element or may exist intermediary element, between element
Connection can be physically, in logic or its combination.On the contrary, when claiming element " being directly coupled to " or " being directly connected to
To " another element when, it is meant that the two be not present intermediary element.
The utility model can be presented in a variety of manners, some of them embodiment explained below.
Fig. 1 shows the structural schematic diagram of switching circuit according to the present utility model.As shown in Figure 1, the utility model is cut
Changing circuit 100 includes comparison module 110 and switching module 120.Comparison module 110 and the first power module 200 and second source
Module 300 connects, for acquiring the driving voltage of 300 reality output of the first power module 200 or second power supply module.Simultaneously will
The driving voltage and reference voltage received is compared, and provides comparison result to switching module 120.Switching module 120
It is connect respectively with the first power module 200 and second power supply module 300, switching module 120 is used for according to comparison result to first
Power module 200 or second power supply module 300 provide control signal Rst, open the first power module 200 or second power supply module
300。
Wherein, the first power module 200 and second power supply module 300 are used for as the display panel that is attached thereto (in Fig. 1 not
Show) source electrode drive circuit provide driving voltage.In addition, the driving voltage that second power supply module 300 exports is greater than the first electricity
The driving voltage that source module 200 exports.In the present embodiment, the first power module 200 is, for example, the power supply mould of 2-power mode
Block, second power supply module 300 are, for example, the power module of 3-power mode.
In the present embodiment, it is preferentially worked using the first power module 200, provides driving voltage for display panel.Compare
Module 110 receives the driving voltage, is compared with reference voltage, when driving voltage is less than reference voltage, by switching mould
Block 120 switches second power supply module 300 and works, and increases the driving voltage so that display panel can work normally.
Certainly, the utility model is not limited system, and in other embodiments, the first power module 200 is 3-power
The power module of mode, second power supply module 300 are the power module of 2-power mode, preferential using the second electricity at work
Source module 300 works, and provides driving voltage for display panel.Comparison module 110 receives the driving voltage, with reference voltage into
Row compares, and when driving voltage is less than reference voltage, switching module 120 switches the work of the first power module 200, increases the drive
Voltage is moved so that display panel can work normally.Those skilled in the art can select as the case may be.
It is in the following embodiments the power module of 2-power mode, second power supply module with the first power module 200
300 are illustrated for the power module of 3-power mode.
Fig. 2 shows the circuit diagrams of switching circuit according to the present utility model.As shown in Fig. 2, switching circuit 100 includes
First comparison module 112, the second comparison module 113 and switching module 120.
In the present embodiment, driving voltage includes the first driving voltage Vsn and the second driving voltage Vsp.First compares mould
Block 112 compares for being compared the first driving voltage Vsn and the first reference voltage Vref 1 to the offer of switching module 120
As a result.Second comparison module 113 is for the second driving voltage Vsp and the second reference voltage Vref 2 to be compared, to switching mould
Block 120 provides comparison result.Switching module 120 provides control signal Rst according to comparison result, and first in Fig. 1 is opened in selection
Power module 200 or second power supply module 300.
First driving voltage Vsn and the second driving voltage Vsp is the actual voltage value that power module generates.Wherein, first
Driving voltage Vsn is negative voltage, and the second driving voltage Vsp is positive voltage.
In the prior art, when the first driving voltage Vsn is less than the first reference voltage Vref 1 and the second driving voltage Vsp
When occurring simultaneously less than the second reference voltage Vref 2, it is possible that display picture is different.Therefore in the present embodiment, when first drives
Dynamic voltage Vsn occurs less than the first reference voltage Vref 1 and the second driving voltage Vsp less than the second reference voltage Vref 2 simultaneously
When, switching module 120 opens second power supply module work, increases the first driving voltage Vsn and the second driving voltage
Vsp。
Specifically, as shown in Fig. 2, the first comparison module 112 includes comparator U1 and switching tube M1, comparator U1 is just
Phase input terminal receives the first reference voltage Vref 1, and inverting input terminal receives the first driving voltage Vsn, output end and switching tube M1
Control terminal connection.The first path terminal of switching tube M1 is grounded, alternate path end connect with the input terminal of switching module 120 with
First level signal is provided.
First comparison module 112 further includes resistance R1-R4, capacitor C1-C3 and power supply V1.Wherein, power supply V1 is for being
Comparator U1 provides working power.Resistance R1 is connected to 1 input terminal of the first reference voltage Vref and the positive of comparator U1 inputs
Between end.Second resistance R2 is series between the first driving voltage Vsn input terminal and the inverting input terminal of comparator U1.Resistance R3
The anode of first end and power supply V1 connect, second end is connect with the alternate path end of switching tube M1.Resistance R4, which is connected to, to be compared
Between the output end of device U1 and the control terminal of switching tube M1.
The first end of capacitor C1 is connect with the normal phase input end of comparator U1, second end ground connection.The first end of capacitor C2 with
The inverting input terminal of comparator U1 connects, second end ground connection.Capacitor C3 is connected to the first path terminal of switching tube M1 and second and leads to
Between terminal.
Second comparison module 113 includes comparator U2 and switching tube M2, and the normal phase input end of comparator U2 receives second and drives
Dynamic voltage Vsp, inverting input terminal receive reference voltage Vref 2, and output end is connect with the control terminal of switching tube M2.Switching tube M2's
First path terminal ground connection, alternate path end is connect to provide second electrical level signal with the input terminal of switching module 120.
Second comparison module 113 further includes resistance R5-R8, capacitor C4-C6 and power supply V1.Wherein, power supply V1 is for being
Comparator U2 provides working power.Resistance R5 is connected to the normal phase input end of the second driving voltage Vsp input terminal and comparator U2
Between.Second resistance R6 is series between 2 input terminal of the second reference voltage Vref and the inverting input terminal of comparator U2.Resistance R7
The anode of first end and power supply V1 connect, second end is connect with the alternate path end of switching tube M2.Resistance R8, which is connected to, to be compared
Between the output end of device U2 and the control terminal of switching tube M2.
The first end of capacitor C4 is connect with the normal phase input end of comparator U2, second end ground connection.The first end of capacitor C5 with
The inverting input terminal of comparator U2 connects, second end ground connection.Capacitor C6 is connected to the first path terminal of switching tube M2 and second and leads to
Between terminal.
Switching module 120 includes diode D1 and D2 and triode P1, the base of the anode and triode P1 of diode D1
Pole connection, cathode are connect with the alternate path end of the switching tube M1 of the first comparison module 112 to receive the first level signal.Two poles
The anode of pipe D2 is connect with the base stage of triode P1, and the alternate path end of the switching tube M2 of cathode and the second comparison module 113 connects
It connects to receive second electrical level signal.The emitter of triode P1 is grounded, and collector is for exporting control signal Rst.
Switching module 120 further includes power supply V2 and resistance R9-R11, resistance R9 and power supply V2 be connected to diode D1 and
Between the node and ground of the cathode of diode D2.Resistance R11 and power supply V2 are connected between the collector and ground of triode P1.Electricity
The first end of resistance R10 is connect with the base stage of triode P1, and second end is connect with the node of diode D1 and diode D2.
Table 1
Table 1 shows the working principle of the switching circuit of the present embodiment, as described in Table 1, when the first driving voltage Vsn is greater than the
When one reference voltage Vref 1 or/and the second driving voltage Vsp are greater than the second reference voltage Vref 2, what switching module 120 exported
Control signal Rst is high level, the work of the first power module；When the first driving voltage Vsn less than the first reference voltage Vref 1 and
When second driving voltage Vsp is less than the second reference voltage Vref 2, the output control of switching module 120 signal Rst is low level, the
The work of two power modules.
Another aspect according to the present utility model provides a kind of display device, including display panel and above-mentioned power supply
Circuit is managed, the electric power management circuit is used to provide driving voltage to the display panel.
In conclusion electric power management circuit provided by the utility model and display device, wherein electric power management circuit includes
First power module, second power supply module and conversion circuit, wherein the driving voltage of second power supply module is greater than the first power supply
The driving voltage of module.In electric power management circuit work, conversion circuit receives the driving voltage of the first power module, with reference
Voltage is compared, and when driving voltage is less than reference voltage, conversion circuit opens the bigger second power supply module of driving voltage,
The first power module is closed, driving voltage is improved, can be effectively suppressed and show the different phenomenon of picture caused by driving voltage deficiency, improve aobvious
The display quality of showing device.
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
It is as described above according to the embodiments of the present invention, these embodiments details all there is no detailed descriptionthe,
Also not limiting the utility model is only the specific embodiment.Obviously, as described above, many modification and change can be made
Change.These embodiments are chosen and specifically described to this specification, is in order to preferably explain the principles of the present invention and actually to answer
With so that skilled artisan be enable to utilize the utility model and repairing on the basis of the utility model well
Change use.The utility model is limited only by the claims and their full scope and equivalents.
Claims (10)
1. a kind of electric power management circuit, which is characterized in that the electric power management circuit includes:
First power module and second power supply module, for providing driving voltage to display device；And switching circuit, wherein
The switching circuit includes:
Comparison module connect to receive the driving voltage with first power module and second power supply module, is used for institute
It states driving voltage to be compared with reference voltage, comparison result is provided；
Switching module, is connected to receive the comparison result with the comparison module, according to the comparison result to described first
Power module or second power supply module provide control signal, open first power module or second power supply module,
Wherein, the driving voltage of the second power supply module is greater than the driving voltage of first power module.
2. electric power management circuit according to claim 1, which is characterized in that
When the driving voltage is less than the reference voltage, the switching circuit opens the second power supply module, closes institute
State the first power module；
When the driving voltage is greater than the reference voltage, the switching circuit opens first power module, closes institute
State second power supply module.
3. electric power management circuit according to claim 1, which is characterized in that the driving voltage includes the first driving voltage
With the second driving voltage, wherein the polarity of first driving voltage and the second driving voltage is opposite.
4. electric power management circuit according to claim 3, which is characterized in that the reference voltage includes the first reference voltage
With the second reference voltage, wherein first reference voltage is identical with the first driving voltage polarity, and described second with reference to electricity
It presses identical with the second driving voltage polarity.
5. electric power management circuit according to claim 4, which is characterized in that when first driving voltage is less than described the
When one reference voltage and second driving voltage are less than second reference voltage, the comparison module provides effective level
Signal.
6. electric power management circuit according to claim 5, which is characterized in that the comparison module includes:
First comparison module, first input end receive first reference voltage, and the second input terminal receives the first driving electricity
Pressure, output end is for providing the first level signal；
Second comparison module, first input end receive second driving voltage, and the second input terminal receives described second with reference to electricity
Pressure, output end is for providing second electrical level signal.
7. electric power management circuit according to claim 6, which is characterized in that first comparison module includes:
First comparator, normal phase input end receive first reference voltage, and inverting input terminal receives first driving voltage,
First switch tube, control terminal are connect with the output end of the first comparator, the first path terminal ground connection, alternate path end with
The switching module connection,
First power supply, for providing working power for the first comparator；
To the 4th resistance, the first resistor is connected to the input terminal of first reference voltage and described first and compares first resistor
Compared between the normal phase input end of device,
Second resistance is connected between the input terminal of first driving voltage and the inverting input terminal of the first comparator,
The first end of 3rd resistor is connect with the anode of first power supply, and the second end of the 3rd resistor is opened with described first
The alternate path end connection of pipe is closed,
4th resistance is connected between the output end of the first comparator and the control terminal of the first switch tube；
First capacitor is to third capacitor, and the first end of the first capacitor and the first resistor and the first comparator are just
The intermediate node of phase input terminal connects, second end ground connection,
The first end of second capacitor is connect with the intermediate node of the second resistance and the inverting input terminal of the first comparator,
Second end ground connection,
The third capacitance connection is between the first path terminal and alternate path end of the first switch tube.
8. electric power management circuit according to claim 6, which is characterized in that second comparison module includes:
Second comparator, normal phase input end receive second driving voltage, and inverting input terminal receives second reference voltage,
Second switch, control terminal are connect with the output end of second comparator, the first path terminal ground connection, alternate path end with
The switching module connection,
Second source, for providing working power for second comparator；
5th resistance to the 8th resistance, the 5th resistance, which is connected to the input terminal of second driving voltage and described second, to be compared
Compared between the normal phase input end of device,
6th resistance is connected between the input terminal of second reference voltage and the inverting input terminal of second comparator,
The first end of 7th resistance is connect with the anode of the second source, and the second end of the 7th resistance is opened with described second
The alternate path end connection of pipe is closed,
8th resistance is connected between the output end of second comparator and the control terminal of the second switch；
4th capacitor to the 6th capacitor, the first end of the 4th capacitor and the 5th resistance and second comparator are just
The intermediate node of phase input terminal connects, second end ground connection,
The first end of 5th capacitor is connect with the intermediate node of the inverting input terminal of the 6th resistance and second comparator,
Second end ground connection,
6th capacitance connection is between the first path terminal and alternate path end of the second switch.
9. electric power management circuit according to claim 6, which is characterized in that the switching module includes: triode, first
Diode and the second diode, the 9th resistance to eleventh resistor and third power supply and the 4th power supply,
Wherein, the cathode of the first diode is connect to receive first level with the output end of first comparison module
Signal, anode are connect by the tenth resistance with the base stage of the triode,
The cathode of second diode is connect to receive the second electrical level signal with the output end of second comparison module,
The positive intermediate node with the first diode and the tenth resistance is connect,
The anode of the third power supply is connect with the first end of the 9th resistance, cathode ground connection, and the second of the 9th resistance
End is connect with the node of the first diode and second diode,
The anode of 4th power supply is connect with the first end of the eleventh resistor, cathode ground connection, the eleventh resistor
Second end is connect with the collector of the triode, the emitter ground connection of the triode,
The collector of the triode and the intermediate node of the eleventh resistor are used to provide the described control signal.
10. a kind of display device characterized by comprising
Display panel；And
The described in any item electric power management circuits of claim 1-9, the electric power management circuit to the display panel for mentioning
For driving voltage.
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| CN201821267689.4U CN208986673U (en) | 2018-08-07 | 2018-08-07 | Electric power management circuit and display device |
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|---|---|---|---|
| CN201821267689.4U CN208986673U (en) | 2018-08-07 | 2018-08-07 | Electric power management circuit and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110768365A (en) * | 2019-10-17 | 2020-02-07 | 珠海格力电器股份有限公司 | Frequency converter system with redundant power supply and control method thereof |
| WO2021164650A1 (en) * | 2020-02-21 | 2021-08-26 | 京东方科技集团股份有限公司 | Display panel driving method, drive circuit thereof, and display device |
| WO2021208782A1 (en) * | 2020-04-14 | 2021-10-21 | 咸阳彩虹光电科技有限公司 | Liquid crystal display panel drive apparatus and liquid crystal display apparatus |
| WO2022252627A1 (en) * | 2021-06-03 | 2022-12-08 | 荣耀终端有限公司 | Power supply circuit, driving apparatus and display apparatus |
| WO2023221101A1 (en) * | 2022-05-20 | 2023-11-23 | 京东方科技集团股份有限公司 | Power supply circuit and drive method therefor, printed circuit board, and display module and apparatus |
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- 2018-08-07 CN CN201821267689.4U patent/CN208986673U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110768365A (en) * | 2019-10-17 | 2020-02-07 | 珠海格力电器股份有限公司 | Frequency converter system with redundant power supply and control method thereof |
| CN110768365B (en) * | 2019-10-17 | 2021-01-12 | 珠海格力电器股份有限公司 | Frequency converter system with redundant power supply and control method thereof |
| WO2021164650A1 (en) * | 2020-02-21 | 2021-08-26 | 京东方科技集团股份有限公司 | Display panel driving method, drive circuit thereof, and display device |
| US11663988B2 (en) | 2020-02-21 | 2023-05-30 | Hefei Xinsheng Optoelectronics Technology Co., Ltd. | Display panel driving method, drive circuit thereof, and display device |
| WO2021208782A1 (en) * | 2020-04-14 | 2021-10-21 | 咸阳彩虹光电科技有限公司 | Liquid crystal display panel drive apparatus and liquid crystal display apparatus |
| WO2022252627A1 (en) * | 2021-06-03 | 2022-12-08 | 荣耀终端有限公司 | Power supply circuit, driving apparatus and display apparatus |
| WO2023221101A1 (en) * | 2022-05-20 | 2023-11-23 | 京东方科技集团股份有限公司 | Power supply circuit and drive method therefor, printed circuit board, and display module and apparatus |
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