CN109637494A - Driving method, the power supply IC, display device of display control circuit - Google Patents
Driving method, the power supply IC, display device of display control circuit Download PDFInfo
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- CN109637494A CN109637494A CN201910106764.1A CN201910106764A CN109637494A CN 109637494 A CN109637494 A CN 109637494A CN 201910106764 A CN201910106764 A CN 201910106764A CN 109637494 A CN109637494 A CN 109637494A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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- Crystallography & Structural Chemistry (AREA)
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
The present invention provides a kind of driving method of display control circuit, power supply IC, display device, is related to field of display technology, and the pull-up node and signal output end for solving the problems, such as GOA unit can not regular pictures.The driving method of display control circuit, comprising: under the control of starting-up signal, power supply IC transmits the first operating voltage to timing control sub-circuit, transmits the second operating voltage to level conversion sub-circuit；Under the control of the first operating voltage, timing control sub-circuit originates full frame initializing signal to level conversion sub-circuit transmission；Under the control of the second operating voltage, level conversion sub-circuit is amplified to full frame initializing signal is originated, and the full frame initializing signal of the target generated after amplification is transmitted to display panel；Wherein, timing control sub-circuit originates period of full frame initializing signal and power supply IC to level conversion sub-circuit transmission and is at least partly overlapped to the period of level conversion sub-circuit the second operating voltage of transmission.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of driving method of display control circuit, power supply IC, displays
Device.
Background technique
(Thin Film Transistor-Liquid Crystal Display, Thin Film Transistors-LCD are aobvious by TFT-LCD
Show device) in product, GOA (Gate Driver on Array, the driving of array substrate row) mode gradually replaces COF (Chip On
Film, flip chip) mode.It is generated in the timing of current conventional GOA product, Level Shifter (level conversion son electricity
Road) according to the starting full frame initializing signal VTRST of TCON (timing control sub-circuit) transmission, it is corresponding amplified to generate
The full frame initializing signal VTRST-LS of target, to drive the PU (pull-up node) and OUTPUT (signal output end) of GOA unit
Regular picture avoids pull-up node or signal output end charge residue from carrying out wrong output to GOA unit.
But after in practical applications, booting powers on, it will usually encounter TCON output and originate full frame initializing signal VTRST
Afterwards, Level Shifter fails to generate the corresponding full frame initializing signal VTRST_LS of target, leads to the pull-up section of GOA unit
Point and signal output end can not regular picture, occur booting charge residue the problem of.
Summary of the invention
The embodiment of the present invention provides a kind of driving method of display control circuit, power supply IC, display device, for solving
Because failing to input the full frame initializing signal of target to GOA unit, cause the pull-up node of GOA unit and signal output end can not be just
Often the problem of electric discharge.
In order to achieve the above objectives, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, providing a kind of driving method of display control circuit, the display control circuit includes timing control
Sub-circuit, power supply IC and level conversion sub-circuit；The control method of the display control circuit includes: the control in starting-up signal
Under system, power supply IC transmits the first operating voltage, Xiang Suoshu level conversion sub-circuit transmission second to the timing control sub-circuit
Operating voltage；Under the control of first operating voltage, the timing control sub-circuit is passed to the level conversion sub-circuit
The defeated full frame initializing signal of starting；Under the control of second operating voltage, the level conversion sub-circuit is to the starting
Full frame initializing signal amplifies, and the full frame initializing signal of the target generated after amplification is transmitted to display panel；Wherein,
The timing control sub-circuit to the level conversion sub-circuit transmit period of the full frame initializing signal of the starting with it is described
Power supply IC was at least partly overlapped to the period that the level conversion sub-circuit transmits second operating voltage.
Optionally, the timing control sub-circuit stops full frame initial to the level conversion sub-circuit transmission starting
Weight at the time of stopping transmitting second operating voltage to the level conversion sub-circuit with the power supply IC at the time of changing signal
It closes.
Optionally, the timing control sub-circuit is believed to the level conversion sub-circuit transmission full frame initialization of starting
After number, the power supply IC transmits second operating voltage to the level conversion sub-circuit.
Optionally, the driving method of the display control circuit further include: the timing control sub-circuit stops to described
After the level conversion sub-circuit transmission full frame initializing signal of starting, the power supply IC transmits common voltage to display panel.
Optionally, the driving method of the display control circuit further include: under the control of off signal, the power supply IC
First operating voltage, Xiang Suoshu level conversion sub-circuit transmission second work are transmitted to the timing control sub-circuit
Voltage.
Optionally, the driving method of the display control circuit further include: under the control of breath screen signal, the power supply IC
First operating voltage, Xiang Suoshu level conversion sub-circuit transmission second work are transmitted to the timing control sub-circuit
Voltage.
Second aspect provides a kind of power supply IC, comprising: receiving unit, for receiving starting-up signal, and the institute that will be received
It states starting-up signal and is transmitted to call unit；Storage unit, for storing instruction；The call unit, for believing in the booting
Number control under, call described instruction stored in the storage unit so that power supply IC export the first operating voltage and second
Operating voltage.
Optionally, the receiving unit is also used to receive off signal, and the off signal received is transmitted to
The call unit；The call unit is also used under the control of the off signal, is called and is stored in the storage unit
Described instruction so that power supply IC exports the first operating voltage and the second operating voltage.
Optionally, the receiving unit is also used to receive breath screen signal, and the breath screen signal received is transmitted to
The call unit；The call unit is also used under the control of the breath screen signal, calls and store in the storage unit
Described instruction so that power supply IC exports the first operating voltage and the second operating voltage.
The third aspect provides a kind of display device, including power supply IC described in second aspect.
The present invention provides a kind of driving method of display control circuit, power supply IC, display device, control level conversion son electricity
The full frame initializing signal of target is transmitted to the GOA unit in display panel by road, it is understood that is that, in booting, level turns
Sub-circuit is changed to each full frame initializing signal of GOA unit target, with the pull-up node and signal output end progress to GOA unit
Booting electric discharge.Signal output end can not export gated sweep signal at this time, and it is brilliant will not to open the film connecting with signal output end
Body pipe can avoid the problem of booting charge residue occur, therefore without bad visible.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structural schematic diagram of display control circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of driver' s timing figure of display control circuit provided in an embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of GOA unit provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
For all TFT-LCD using GOA (Gate Driver on Array, the driving of array substrate row) mode
(Thin Film Transistor-Liquid Crystal Display, thin film transistor-liquid crystal display) product, will produce
Product parameter designing is quick turn-on about 500ms after shut down, can satisfy the requirement of all users substantially.In the case, it closes
The pull-up node PU and signal output end OUTPUT of GOA unit have charge residue after machine, export gated sweep signal, make to show
The thin film transistor (TFT) of Qu Zhongyu signal output end connection is opened in various degree, and display panel is caused the different degrees of cross that is switched on occur
To Garbage (hash).
Based on this, the embodiment of the present invention provides a kind of driving method of display control circuit, when display control circuit includes
Sequence controls sub-circuit (TCON), power supply IC (Power IC) and level conversion sub-circuit (Level Shifter)；Display control
The control method of circuit includes:
Under the control of starting-up signal, power supply IC (Integrated Circuit, integrated circuit) is electric to timing control
The first operating voltage is transmitted on road, transmits the second operating voltage to level conversion sub-circuit.
Under the control of the first operating voltage, timing control sub-circuit is full frame initial to level conversion sub-circuit transmission starting
Change signal.
Under the control of the second operating voltage, level conversion sub-circuit is amplified to full frame initializing signal is originated, and
The full frame initializing signal of the target generated after amplification is transmitted to display panel.
Wherein, timing control sub-circuit originates period and the power supply of full frame initializing signal to level conversion sub-circuit transmission
IC to level conversion sub-circuit transmit the second operating voltage period be at least partly overlapped.
It is understood that as shown in Figure 1, power supply IC connection sequential control circuit and level in display control circuit turn
Sub-circuit is changed, for transmitting the first operating voltage to timing control sub-circuit under the control of starting-up signal, to level conversion
The second operating voltage of circuit transmission.
Power supply IC can generate the first operating voltage and the second operating voltage according to the voltage that inputs through system interface, and first
Operating voltage and the second operating voltage for example can be 3.3V or so.Certainly, the first operating voltage and the second operating voltage can be with
It does not export simultaneously.Starting-up signal at this time, such as can be system interface input voltage, it is also possible to other in display device
The control signal that component is inputted to power supply IC.
Timing control sub-circuit is also connected with level conversion sub-circuit, under the control of the first operating voltage, to level
Conversion sub-circuit transmission originates full frame initializing signal, and the specific value for originating full frame initializing signal can according to need rationally
Setting.
Level conversion sub-circuit, for being put to full frame initializing signal is originated under the control of the second operating voltage
Greatly, to generate the full frame initializing signal of target, and the full frame initializing signal of target is exported, is transmitted to display panel.
It should be noted that first, drive the full frame initializing signal of the target of GOA unit be by timing control sub-circuit and
Level conversion sub-circuit cooperatively forms.If but when the full frame initializing signal of starting of timing control sub-circuit output
After being transmitted to level conversion sub-circuit, level conversion sub-circuit receives the second operating voltage not yet, then level conversion at this time
Sub-circuit will not be amplified to full frame initializing signal is originated, but it is (generally low to export default voltage according to auto-mechanism
Level signal VGL).
Since the full frame initializing signal of the received target of GOA unit is generally high level signal (VGL), level conversion
The default voltage that sub-circuit is transmitted to GOA unit can be considered abnormal signal, which can not drive GOA unit normal reset
Pull-up node and signal output end, residual charge can not be normally released, and lead to pull-up node and signal output end charge residue
Wrong output is carried out to GOA unit, causes display panel Garbage occur bad.
Therefore, the embodiment of the present invention proposes: timing control sub-circuit is full frame initial to level conversion sub-circuit transmission starting
Change period and the power supply IC of signal and is at least partly overlapped to the period of level conversion sub-circuit the second operating voltage of transmission.Such one
Come, as shown in Fig. 2, timing control sub-circuit originates the period of full frame initializing signal VTRST to level conversion sub-circuit transmission
(thickened portion), the full frame initializing signal VTRST-LS (thickened portion) of the exportable target of level conversion sub-circuit.
Second, the driving method of display control circuit provided in an embodiment of the present invention is suitable for driving any using GOA
The TFT-LCD of mode.Exemplary, the structure of GOA unit can be as shown in figure 3, display control circuit be used for TRST signal end
Input the full frame initializing signal VTRST-LS of target.
In the driving method of display control circuit provided in an embodiment of the present invention, level conversion sub-circuit is controlled target is complete
Screen initializing signal VTRST-LS is transmitted to the GOA unit in display panel, it is understood that be, in booting, level conversion
Sub-circuit is to the full frame initializing signal VTRST-LS of each GOA unit target, with the pull-up node and signal output to GOA unit
End boots up electric discharge.Signal output end can not export gated sweep signal at this time, will not open and connect with signal output end
Thin film transistor (TFT) can avoid the problem of booting charge residue occur, therefore without bad visible.
In order to avoid power wastage, in some embodiments, timing control sub-circuit stops passing to level conversion sub-circuit
Stop transmitting the second operating voltage to level conversion sub-circuit with power supply IC at the time of defeated starting full frame initializing signal VTRST
Moment is overlapped.
That is, as shown in Fig. 2, stopping in timing control sub-circuit full frame just to level conversion sub-circuit transmission starting
At the time of beginningization signal VTRST (in Fig. 2 at the time of marker dots), power supply IC stops transmitting the second work to level conversion sub-circuit
Make voltage, this moment, level conversion sub-circuit exports default voltage VGL.
In order to guarantee signal output effect, in some embodiments, timing control sub-circuit is passed to level conversion sub-circuit
After the defeated full frame initializing signal VTRST of starting, power supply IC transmits the second operating voltage to level conversion sub-circuit.
That is, as shown in Fig. 2, timing control sub-circuit originates full frame initialization letter to level conversion sub-circuit transmission
After number VTRST, level conversion sub-circuit just receives the second operating voltage of power supply IC transmission, to originating full frame initializing signal
VTRST is amplified, and exports the full frame initializing signal VTRST-LS of target.
In some embodiments, as shown in Fig. 2, the driving method of display control circuit further include:
Timing control sub-circuit stops after transmitting the full frame initializing signal VTRST of starting to level conversion sub-circuit, power supply
IC transmits common voltage VCOM to display panel.
It due to the presence of common voltage VCOM, also results in display panel and residual lotus occurs, this is based on, in order to further mention
High residual lotus eradicating efficacy, selection of the embodiment of the present invention provide display after carrying out residual lotus elimination to GOA unit, then to display panel
With common voltage VCOM.
It should be noted that when voltage end VDDIN, DVDD, AVDD, VGH signal in Fig. 2 power supply IC output signal,
It is herein only a kind of with reference to signal.
In order to further avoid influence of the residual lotus to display, before shutdown, primary residual lotus is also carried out to GOA unit and is eliminated
Process, in some embodiments, the driving method of display control circuit further include:
Under the control of off signal, power supply IC transmits the first operating voltage to timing control sub-circuit, to level conversion
Sub-circuit transmits the second operating voltage.
At this point, timing control sub-circuit is complete to level conversion sub-circuit transmission starting under the control of the first operating voltage
Shield initializing signal VTRST.
Under the control of the second operating voltage, level conversion sub-circuit is put to full frame initializing signal VTRST is originated
Greatly, and by the full frame initializing signal VTRST-LS of the target generated after amplification it is transmitted to display panel.
Certainly, full frame initializing signal also is originated to level conversion sub-circuit transmission necessarily satisfying for timing control sub-circuit
The period of VTRST and power supply IC were at least partly overlapped to the period that level conversion sub-circuit transmits the second operating voltage, to GOA
Unit carries out residual lotus release.
In the case, after receiving off signal, before shutdown, display control circuit is first to GOA unit output one
The secondary full frame initializing signal VTRST-LS of target, then shuts down again.
For some display devices (such as computer), there can be breath screen state, display panel is not shown at this time, in order to
Influence of the residual lotus to display is further avoided, in the case where ceasing screen state, primary residual lotus is also carried out to GOA unit and eliminates process, one
In a little embodiments, the driving method of display control circuit further include:
Under the control of breath screen signal, power supply IC transmits the first operating voltage to timing control sub-circuit, to level conversion
Sub-circuit transmits the second operating voltage.
At this point, timing control sub-circuit is complete to level conversion sub-circuit transmission starting under the control of the first operating voltage
Shield initializing signal VTRST.
Under the control of the second operating voltage, level conversion sub-circuit is put to full frame initializing signal VTRST is originated
Greatly, and by the full frame initializing signal VTRST-LS of the target generated after amplification it is transmitted to display panel.
Certainly, full frame initializing signal also is originated to level conversion sub-circuit transmission necessarily satisfying for timing control sub-circuit
The period of VTRST and power supply IC were at least partly overlapped to the period that level conversion sub-circuit transmits the second operating voltage, to GOA
Unit carries out residual lotus release.
The embodiment of the present invention also provides a kind of power supply IC, comprising:
Receiving unit is transmitted to call unit for receiving starting-up signal, and by the starting-up signal received.
Storage unit, for storing instruction.
Call unit, for the instruction stored in storage unit being called, so that power supply IC is defeated under the control of starting-up signal
First operating voltage and the second operating voltage out.
It is understood that open state is transmitted to receiving unit after being detected by the component in power supply IC, it can also be with
Be in display device other component detection after be transmitted to receiving unit.
First operating voltage of power supply IC output is transferred to timing control sub-circuit, and the second operating voltage of output is to pass
Transport to level conversion sub-circuit.
Power supply IC provided in an embodiment of the present invention can according to need in booting to level conversion sub-circuit output second
Operating voltage, to ensure to export in the period for originating full frame initializing signal VTRST in timing control sub-circuit, level conversion
Circuit can be amplified to full frame initializing signal VTRST is originated, to generate the full frame initializing signal VTRST-LS of target, and
The full frame initializing signal VTRST-LS of target is transmitted to GOA unit.
In some embodiments, receiving unit is also used to receive off signal, and the off signal received is transmitted to
Call unit.
Call unit is also used under the control of off signal, the instruction stored in storage unit is called, so that power supply IC
Export the first operating voltage and the second operating voltage.
That is, power supply IC also exports first operating voltage and the second work electricity when receiving off signal
Pressure, so that display control circuit exports the full frame initializing signal VTRST-LS of a target.
In some embodiments, receiving unit is also used to receive breath screen signal, and the breath screen signal received is transmitted to
Call unit.
Call unit is also used under the control of breath screen signal, the instruction stored in storage unit is called, so that power supply IC
Export the first operating voltage and the second operating voltage.
That is, power supply IC also exports first operating voltage and the second work electricity when receiving breath screen signal
Pressure, so that display control circuit exports the full frame initializing signal VTRST-LS of a target.
Hereinafter, with a specific embodiment to the driver' s timing of power supply IC provided in an embodiment of the present invention be arranged data into
Row signal, display device for example can be TN (Twist Nematic, twisted-nematic) type liquid crystal display device, screen 15.6
Very little high definition screen (15.6HD).
When driving display device, the parameter of power supply IC be can be set are as follows:
The time-to-climb (AVDD_SS) of AVDD signal is 5ms, i.e. used time of the AVDD signal from initial value to target value be
5ms。
The time-to-climb (VGH_SS) of VGH signal is 2ms, i.e. used time of the VGH signal from initial value to target value is 2ms.
The time-to-climb (VGL_SS) of VGL signal be 4ms, i.e., VGL signal from initial value to target value (may be positive value,
Negative value, 0, for being opposite VGH signal) used time be 4ms.
The delay time (VGH_Delay) of VGH signal is 0ms, i.e., from the target value moment of AVDD signal to VGH signal
The time at initial value moment is 0ms.
The delay time (VGL_Delay) of VGL signal is 0ms, i.e., from the target value moment of AVDD signal to VGL signal
The time at initial value moment is 0ms.
The delay time (LDO_Delay) of LDO signal is 2ms, i.e., reaches target value (such as 2.3V) from VDDIN signal
Moment to DVDD signal the initial value moment time be 2ms.
The delay time (VCOM_Delay) of VCOM signal be 15ms, i.e., from VDDIN signal reach target value (such as
At the time of 2.3V) to the time at the initial value moment of VCOM signal be 15ms.
If not increasing when start-up phase carries out the process of residual lotus release to GOA unit, power for above-mentioned display device, electricity
The parameter setting of source IC are as follows: AVDD_SS 15ms, VGH_SS 6ms, VGL_SS 8ms, VGH_Delay 4ms, VGL_
Delay is 15ms, LDO_Delay ms, VCOM_Delay 20ms.
The embodiment of the present invention also provides a kind of display device, including above-mentioned power supply IC.
Above-mentioned display device specifically can be OLED display, liquid crystal display, LCD TV, Digital Frame, mobile phone, put down
Plate computer, navigator etc. have the product or component of any display function.
Wherein, display device can also include timing control sub-circuit and level conversion sub-circuit, timing control sub-circuit
The relevant technologies can be referred to the structure of level conversion sub-circuit.
Display device provided in an embodiment of the present invention, including above-mentioned power supply IC, when power supply IC is applied to display control circuit
When, the driving process of achievable above-mentioned display control circuit, in booting, display control circuit is complete to each GOA unit target
Shield initializing signal VTRST-LS, with to GOA unit pull-up node and signal output end boot up electric discharge.Signal is defeated at this time
Outlet can not export gated sweep signal, will not open the thin film transistor (TFT) connecting with signal output end, avoidable to be switched on
The problem of charge residue, therefore without bad visible.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of driving method of display control circuit, which is characterized in that the display control circuit includes timing control son electricity
Road, power supply IC and level conversion sub-circuit；
The driving method of the display control circuit includes:
Under the control of starting-up signal, power supply IC transmits the first operating voltage, Xiang Suoshu level to the timing control sub-circuit
Conversion sub-circuit transmits the second operating voltage；
Under the control of first operating voltage, the timing control sub-circuit is transmitted to the level conversion sub-circuit and is originated
Full frame initializing signal；
Under the control of second operating voltage, the level conversion sub-circuit carries out the full frame initializing signal of starting
Amplification, and the full frame initializing signal of the target generated after amplification is transmitted to display panel；
Wherein, the timing control sub-circuit to the level conversion sub-circuit transmit the full frame initializing signal of the starting when
Section is at least partly overlapped with the power supply IC to the period that the level conversion sub-circuit transmits second operating voltage.
2. the driving method of display control circuit according to claim 1, which is characterized in that the timing control sub-circuit
Stop with the power supply IC to institute at the time of stopping transmitting the starting full frame initializing signal to the level conversion sub-circuit
State coincidence at the time of level conversion sub-circuit transmits second operating voltage.
3. the driving method of display control circuit according to claim 1, which is characterized in that the timing control sub-circuit
To after the level conversion sub-circuit transmission full frame initializing signal of starting, the power supply IC is electric to level conversion
Transmit second operating voltage in road.
4. the driving method of display control circuit according to claim 1-3, which is characterized in that the display control
The driving method of circuit processed further include:
The timing control sub-circuit stops after transmitting the full frame initializing signal of starting to the level conversion sub-circuit, institute
It states power supply IC and transmits common voltage to display panel.
5. the driving method of display control circuit according to claim 1, which is characterized in that the display control circuit
Driving method further include:
Under the control of off signal, the power supply IC transmits first operating voltage to the timing control sub-circuit, to
The level conversion sub-circuit transmits second operating voltage.
6. the driving method of display control circuit according to claim 1, which is characterized in that the display control circuit
Driving method further include:
Under the control of breath screen signal, the power supply IC transmits first operating voltage to the timing control sub-circuit, to
The level conversion sub-circuit transmits second operating voltage.
7. a kind of power supply IC characterized by comprising
Receiving unit is transmitted to call unit for receiving starting-up signal, and by the starting-up signal received；
Storage unit, for storing instruction；
The call unit, for calling described instruction stored in the storage unit under the control of the starting-up signal,
So that power supply IC exports the first operating voltage and the second operating voltage.
8. power supply IC according to claim 7, which is characterized in that the receiving unit is also used to receive off signal, and
The off signal received is transmitted to the call unit；
The call unit is also used under the control of the off signal, calls the finger stored in the storage unit
It enables, so that power supply IC exports the first operating voltage and the second operating voltage.
9. power supply IC according to claim 7, which is characterized in that the receiving unit is also used to receive breath screen signal, and
The breath screen signal received is transmitted to the call unit；
The call unit is also used under the control of the breath screen signal, calls the finger stored in the storage unit
It enables, so that power supply IC exports the first operating voltage and the second operating voltage.
10. a kind of display device, which is characterized in that including the described in any item power supply IC of claim 7-9.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085188A (en) * | 2019-05-05 | 2019-08-02 | 京东方科技集团股份有限公司 | The level converter and its control method and display panel of display panel |
| CN110264971A (en) * | 2019-06-26 | 2019-09-20 | 京东方科技集团股份有限公司 | Anti- splashette circuit and method, driving circuit, display device |
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| CN110085188B (en) * | 2019-05-05 | 2021-10-08 | 京东方科技集团股份有限公司 | Level conversion device of display panel, control method thereof and display panel |
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| CN110264971B (en) * | 2019-06-26 | 2022-01-04 | 京东方科技集团股份有限公司 | Anti-flash screen circuit and method, driving circuit and display device |
| US11605360B2 (en) | 2019-06-26 | 2023-03-14 | Hefei Boe Display Technology Co., Ltd. | Circuit and method for preventing screen flickering, drive circuit for display panel, and display apparatus |
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