CN106095042A - Protection device and electronic equipment for electronic equipment - Google Patents
Protection device and electronic equipment for electronic equipment Download PDFInfo
- Publication number
- CN106095042A CN106095042A CN201610391498.8A CN201610391498A CN106095042A CN 106095042 A CN106095042 A CN 106095042A CN 201610391498 A CN201610391498 A CN 201610391498A CN 106095042 A CN106095042 A CN 106095042A
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- China
- Prior art keywords
- electronic equipment
- power
- management module
- voltage
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/24—Resetting means
Abstract
The present embodiments relate to electronic device field, disclose a kind of protection device for electronic equipment and electronic equipment.Wherein this protection device includes: dividing potential drop Voltage stabilizing module, and input is connected with the power output end of electronic equipment, for making the voltage Ven of the Enable Pin of power management module less than electric power output voltage VCC1；Power management module, for determining power panel whether power down according to the voltage Ven of Enable Pin, and power management module Enable Pin when power panel power down turns off and is closed, and when power panel powers on Enable Pin connection and be opened；Reseting module, is connected with power management module, for the master chip of electronic equipment is carried out reset control.Use the above-mentioned protection device of the present invention and electronic equipment; electronic equipment can be quickly determined when the temporary transient power-off of electronic equipment and power down occur so that it is guaranteed that power management module is closed in time; and then master chip is resetted by reseting module, it is ensured that the stability of equipment.
Description
Technical field
The present embodiments relate to electronic device field, in particular it relates to a kind of protection device for electronic equipment and
Electronic equipment.
Background technology
During the use of the electronic equipment of such as display device (such as, TV), it is possible that user is quickly closed
Close and turn on not only TV power supply or TV is powered situation fast break occur but also power on.In realizing process of the present invention, invention
People finds that in prior art, at least there are the following problems: owing to the power panel of TV is with the presence of electric capacity, it will cause television shutdown
Time power panel do not drop to of a sufficiently low beginning again to main board power supply and power to TV, now the master chip of TV will have little time multiple
Position, so may cause TV to crash or television operations is abnormal, thus affects user and normally use TV.
Fig. 1 shows the display device reset circuit schematic diagram of a kind of prior art.As it is shown in figure 1, power panel 10 provides
Control master chip 14 to the power supply of mainboard 12 reset by being given to reset circuit after power management chip U1.So work as power panel
When 10 quick power down power on again, owing to the existence of electric capacity C very slowly cannot by the supply voltage VCC1 power down causing power panel 10
The Enable Pin 5 making power management chip U1 turns off and (it is, the Enable Pin 5 of power management chip U1 is not switched off, causes power supply
Managing chip U1 also has output, thus causes reset chip U2 to be not detected by outside and have power down, and then does not give master chip 14
Reset), thus reset chip U2 does not works and causes master chip 14 to reset, and causes mainboard 12 operation irregularity.Wherein,
System-RST represents system reset.
Specifically, in FIG, the voltage Ven of the Enable Pin 5 of power management chip U1 represents.According to Fig. 1, Ven
=VCC1 (now Enable Pin 5 obtains voltage, does not has electric current, so the two is it is believed that approximately equal).Understand based on above formula,
Ven is as the change of VCC1 and changes, and when TV power down, VCC1 is relatively slower, so due to the existence power down of electric capacity C
Ven power down is the slowest, so may result in TV and has little time to reset when quickly shutdown start and cause system operation irregularity.
Summary of the invention
The purpose of the embodiment of the present invention is to provide a kind of protection device for electronic equipment and electronic equipment, on solving
State the problems of the prior art.
To achieve these goals, the embodiment of the present invention provides a kind of protection device for electronic equipment, wherein, this guarantor
Protection unit includes:
Dividing potential drop Voltage stabilizing module, input is connected with the power output end of described electronic equipment, is used for making power management module
The voltage Ven of Enable Pin become with the change of described output voltage VCC1 less than electric power output voltage VCC1, described voltage Ven
Change；
Power management module, for determining the whether power down of described power supply, and described electricity according to the voltage Ven of described Enable Pin
Source control module when described power supply power-fail described Enable Pin turn off and be closed, and when described power supply electrifying described Enable Pin
Connect and be opened；And
Reseting module, is connected with described power management module, for the master chip of described electronic equipment is carried out the control that resets
System.
Alternatively, described dividing potential drop Voltage stabilizing module includes Zener diode D1, the first resistance R1 and the second electricity being connected in series
One end that resistance R2, described Zener diode D1 are not connected with described first resistance R1 is as the input of described dividing potential drop Voltage stabilizing module
Being connected with described power output end, described second resistance R2 is earth resistance, and the Enable Pin of described power management module is connected to
Between described first resistance R1 and described second resistance R2.
Alternatively, by following formula calculate described voltage Ven:Ven=(VCC1-Vz) * R2 (R1+R2), wherein, Vz represents
The voltage of described Zener diode D1.
Alternatively, described power management module determines described power supply whether power down bag according to the voltage Ven of described Enable Pin
Include:
In the case of the voltage Ven of described Enable Pin is less than threshold value, described power management module determines that described power supply falls
Electricity.
Alternatively, described reseting module carries out reset control to the master chip of described electronic equipment and includes:
Described reseting module exports for right in the case of being switched on again again after described power management module is closed
The master chip of described electronic equipment carries out the reset signal resetted.
Alternatively, described reset signal includes high level reset signal and low level reset signal.
The embodiment of the present invention additionally provides a kind of electronic equipment, and including power supply and master chip, wherein, this electronic equipment also wraps
Include the above-mentioned protection device for electronic equipment.
Alternatively, described electronic equipment is TV or display.
By technique scheme, the protection device described in the embodiment of the present invention can be applied in electronic equipment of various,
It is defeated less than power supply owing to the protection device of the embodiment of the present invention being provided with the voltage of the Enable Pin that can make power management module
Go out the dividing potential drop Voltage stabilizing module of voltage, so in the case of temporary transient power-off (such as, quick shutdown is started shooting again) occurs in electronic equipment,
The voltage (changing with the change of electric power output voltage) of Enable Pin no longer begins to decline from electric power output voltage, and power down time is also
Therefore much smaller than the power down time in the case of being limited by electric capacity in prior art, thus power management module can detect in time
Power-down conditions there is and quick closedown power management module to power supply, and then it is multiple that master chip can be carried out by reseting module
Position.Set it is, such scheme of the present invention can quickly determine electronics in the case of electronic equipment quickly shuts down start again
There is power down so that it is guaranteed that power management module is closed in time in standby (such as, the power supply of electronic equipment), and then makes reseting module
Master chip is resetted, it is ensured that the stability of equipment.
Further feature and the advantage of the embodiment of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the electronic equipment reset circuit schematic diagram of a kind of prior art；
Fig. 2 is the protection device block diagram for electronic equipment according to one embodiment of the present invention；
Fig. 3 is the circuit diagram of the protection device for electronic equipment according to one embodiment of the present invention；And
Fig. 4 is the reset signal output signal of the protection device for electronic equipment according to one embodiment of the present invention
Figure.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the present invention, is not limited to the present invention.
In embodiments of the present invention, identical label is used for representing identical element.
Embodiment one
Fig. 2 is the protection device block diagram for electronic equipment according to one embodiment of the present invention.
As in figure 2 it is shown, include according to the protection device for electronic equipment of one embodiment of the present invention offer:
Dividing potential drop Voltage stabilizing module 20, input is connected with the power output end of described electronic equipment, is used for making power management mould
The voltage Ven of the Enable Pin (EN) of block 22 is less than electric power output voltage VCC1, and described voltage Ven is with described output voltage VCC1's
Change and change and (it is, voltage Ven can reflect the change of VCC1 indirectly, thus can judge electricity by the change of Ven
Source state)；
Power management module 22 is for determining the whether power down of described power supply according to the voltage Ven of described Enable Pin and described
Power management module 22 described Enable Pin when described power supply power-fail turns off and is closed, and makes described in when described power supply electrifying
Can connect and be opened, it is, power supply power-fail detected at described power management module 22 by the voltage Ven of Enable Pin by end
Time, Enable Pin will turn off, and power management module 22 is correspondingly closed, at the voltage of the Enable Pin of described power management module 22
When Ven detects power supply electrifying, Enable Pin will connect, and power management module 22 is correspondingly opened, and the most normal at power supply
In the case of power supply, Enable Pin keeps connected state, and power management module 22 correspondingly stays open；And
Reseting module 24, is connected with described power management module 22, multiple for carrying out the master chip of described electronic equipment
Position controls.
Wherein, described electronic equipment can be various display device.Alternatively, electronic equipment can be such as TV or aobvious
Show device.
In embodiments of the present invention, dividing potential drop Voltage stabilizing module 20 could also function as while electric power output voltage is carried out dividing potential drop
To pressure stabilization function.
The technical solution of the present invention can be applied to various electronic equipments, owing to the protection of the embodiment of the present invention fills
Center the voltage dividing potential drop Voltage stabilizing module less than electric power output voltage of the Enable Pin that can make power management module, so
In the case of temporary transient power-off (such as, quickly shutdown-start) occurs in electronic equipment, the voltage of Enable Pin is (with power supply output electricity
The change of pressure and change) no longer begin to decline from electric power output voltage, power down time the most therefore much smaller than in prior art by electricity
Power down time in the case of tolerance limit system, thus power management module can detect that power supply power-down conditions occurs and quick in time
Close power management module, and then master chip can be resetted by reset chip.
From the foregoing, by increasing the voltage of the Enable Pin that can make power management module less than electric power output voltage
Dividing potential drop Voltage stabilizing module so that power management module can be sensitiveer to the reaction of power supply power-fail, the so electricity when power supply power-fail
Source control module enable foot can be the sensitiveest detect, thus power cutoff management module make reseting module can be main
Chip reset, it is ensured that the stability of electronic equipment.
In embodiments of the present invention, the power supply of above-mentioned electronic equipment can realize (referring specifically to following enforcement with power panel
Example two).Now, power output end corresponds to power panel outfan, and electric power output voltage is corresponding to power panel output voltage.
Embodiment two (as a kind of concrete refinement of embodiment one, nonoculture is an embodiment)
Fig. 3 is the circuit diagram of the protection device for electronic equipment according to one embodiment of the present invention.
As it is shown on figure 3, the dividing potential drop Voltage stabilizing module 20 shown in Fig. 2 includes Zener diode D1, the first electricity being connected in series
One end that resistance R1 and the second resistance R2, described Zener diode D1 are not connected with described first resistance R1 is as described dividing potential drop voltage stabilizing
The input of module 20, and be connected with the outfan of described power panel 10, described second resistance R2 is earth resistance, described power supply
The Enable Pin 5 of management module 22 is connected between described first resistance R1 and described second resistance R2.
Wherein, power management module 22 the most specifically uses power management chip U1, it is, power management
What module 22 and power management chip U1 referred to is identical element.
In figure 3, one end that described Zener diode D1 is not connected with described first resistance R1 also with power management chip
The input (IN) 3 of U1 connects.
Additionally, dividing potential drop Voltage stabilizing module 20, power management chip U1, reset chip U2, master chip 14 and and power management
Other element that chip U1 and reset chip U2 directly or indirectly connects (such as electric capacity C1, C2, C3, resistance R3, R4, R5, R6,
Inductance L1) collectively form the mainboard 12 of electronic equipment.
In figure 3, System-RST represents system reset.
According to one embodiment of the present invention, the electricity of the Enable Pin of described power management chip U1 can be calculated by following formula
Pressure Ven:
Ven=(VCC1-Vz) * R2 (R1+R2),
Wherein, Vz represents the voltage of described Zener diode D1.
In conjunction with above-mentioned equation understand, with shown in Fig. 3 annexation connect Zener diode D1, the first resistance R1 and
Second resistance R2 can change the voltage Ven of Enable Pin, it is, can be by the voltage Vz of Zener diode D1 and resistance
R1, R2 regulate the voltage Ven of Enable Pin, and detect power panel by the regulation of Ven can adjust power management chip U1
10 power down whether sensitivity.Wherein, Ven is the least, and sensitivity is the highest, and vice versa.
That is, the voltage Ven of Enable Pin can reflect that power management chip U1 carries out the sensitivity of detection of power loss, and its be by
Vz, R1, R2 control simultaneously.
Thus, Vz, R1, R2 can be adjusted by those skilled in the art according to practical situation, in order to electronic equipment energy
Enough adapt to different applied environments.
It is, by increasing Zener diode D1, such as user electronic equipment quickly shut down and start shooting again
In the case of, the enable foot 5 of power management chip U1 can sense the change of VCC1 delicately such that it is able to detects the most delicately
Power panel 10 power down, and then power cutoff managing chip U1 makes reset chip U2 can reset for master chip, it is ensured that electronics sets
Standby stability, it is to avoid electronic equipment crashes or the problem of abnormal work.
According to one embodiment of the present invention, described power management module 22 determines according to the voltage Ven of described Enable Pin 5
Whether power down includes described power panel 10:
In the case of the voltage Ven of described Enable Pin 5 is less than threshold value, described power management module 22 determines described power supply
Plate 10 power down.
Now, Enable Pin 5 will turn off, and power management module 22 is correspondingly closed.
The content described in conjunction with above-mentioned embodiment understands, and due to the voltage Ven of Enable Pin 5, to drop to time of threshold value little
The time of threshold value is dropped to, so that power management module 22 can determine power panel 10 the most delicately in prior art
Power down.
On the contrary, in the case of the voltage Ven of described Enable Pin 5 is not less than (being i.e. more than or equal to) threshold value, described power supply
Management module 22 determines and is not at power down by described power panel 10 (such as, power panel 10 powers on or is constantly in normal power supply shape
State) state, now Enable Pin will be connected or be kept connected state, and power management module 22 correspondingly will be opened or keep to beat
Open.
It is, when described power management module 22 detects power panel power down by the voltage Ven of Enable Pin, enable
End will turn off, and power management module 22 is correspondingly closed, in the voltage Ven detection of the Enable Pin of described power management module 22
To power panel power on time, Enable Pin will be connected, and power management module 22 is correspondingly opened, and the most normal at power panel 10
In the case of power supply, Enable Pin keeps connected state, and power management module 22 correspondingly stays open.
According to one embodiment of the present invention, the master chip 14 of described electronic equipment is resetted by described reseting module 24
Control includes:
In the case of described reseting module 24 is switched on again again after described power management module 22 is closed, output is used
In the reset signal that the master chip 14 of described electronic equipment is resetted.
Wherein, reseting module 24 the most specifically uses reset chip U2, it is, reseting module 22 and reset
What chip U2 referred to is identical element.
In embodiments of the present invention, due to not to the power management module U1 shown in Fig. 3, reset chip U2 itself with
And element (such as electric capacity C1, C2, C3, resistance R3, R4, R5, R6, the inductance between power management module U1 and reset chip U2
L1) and annexation etc. improves, therefore to do not obscure the present invention, do not repeat them here.
Additionally, it will be appreciated by those skilled in the art that what the content shown in Fig. 3 was merely exemplary, it is not intended to limit
The present invention.
Fig. 4 is the reset signal output signal of the protection device for electronic equipment according to one embodiment of the present invention
Figure.
As shown in Figure 4, described reset signal can include high level reset signal and low level reset signal.
Wherein, Vcc represents the input voltage of reset chip U2, and Vth represents voltage threshold, and/RESET represents reset chip U2
The low level reset signal of output, RESET represents the high level reset signal that reset chip U2 exports, TDelayRepresent time delay.
One embodiment of the present invention additionally provides a kind of electronic equipment, including power panel and master chip, wherein, this electronics
Equipment also includes the protection device for electronic equipment described in above-mentioned embodiment.
Wherein, described electronic equipment can be various display device.
Alternatively, described electronic equipment can be TV or display.
The above-mentioned electronic equipment of the present invention can quickly determine electronic equipment (example in the case of quickly shutdown start again
As, power panel) power down occurs so that it is guaranteed that power management module is closed in time, and then it is multiple that master chip is carried out by reset chip
Position, it is ensured that the stability of equipment.
The optional embodiment of the present invention is described in detail above in association with accompanying drawing, but, the present invention is not limited to above-mentioned reality
Execute the detail in mode, in the technology concept of the present invention, technical scheme can be carried out multiple letter
Monotropic type, these simple variant belong to protection scope of the present invention.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention, at not lance
In the case of shield, can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy illustrates the most separately.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it should be considered as content disclosed in this invention equally.
Claims (9)
1., for a protection device for electronic equipment, wherein, this protection device includes:
Dividing potential drop Voltage stabilizing module, input is connected with the power output end of described electronic equipment, for making making of power management module
The voltage Ven of energy end changes with the change of described output voltage VCC1 less than electric power output voltage VCC1, described voltage Ven；
Power management module, for determining the whether power down of described power supply, and described power supply pipe according to the voltage Ven of described Enable Pin
Reason module described Enable Pin when described power supply power-fail turns off and is closed, and the described Enable Pin connection when described power supply electrifying
And be opened；And
Reseting module, is connected with described power management module, for the master chip of described electronic equipment is carried out reset control.
Protection device the most according to claim 1, wherein, described dividing potential drop Voltage stabilizing module includes voltage stabilizing two pole being connected in series
Pipe D1, the first resistance R1 and the second resistance R2, one end conduct that described Zener diode D1 is not connected with described first resistance R1
The input of described dividing potential drop Voltage stabilizing module is connected with described power output end, and described second resistance R2 is earth resistance, described electricity
The Enable Pin of source control module is connected between described first resistance R1 and described second resistance R2.
Protection device the most according to claim 2, wherein, calculates described voltage Ven by following formula:
Ven=(VCC1-Vz) * R2 (R1+R2),
Wherein, Vz represents the voltage of described Zener diode D1.
4. according to the protection device according to any one of claim 1-3, wherein, described power management module is according to described enable
The voltage Ven of end determines whether power down includes described power supply:
In the case of the voltage Ven of described Enable Pin is less than threshold value, described power management module determines described power supply power-fail.
5. according to the protection device according to any one of claim 1-3, wherein, described reseting module is to described electronic equipment
Master chip carries out reset control and includes:
Described reseting module exports in the case of being switched on again again after described power management module is closed for described
The master chip of electronic equipment carries out the reset signal resetted.
Protection device the most according to claim 5, wherein, described reset signal includes high level reset signal and low level
Reset signal.
7. an electronic equipment, including power supply and master chip, wherein, this electronic equipment also includes any one of claim 1-6
The described protection device for electronic equipment.
Electronic equipment the most according to claim 7, wherein, described electronic equipment is TV or display.
9. according to the electronic equipment described in claim 7 or 8, wherein, described power supply is power panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610391498.8A CN106095042A (en) | 2016-06-06 | 2016-06-06 | Protection device and electronic equipment for electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610391498.8A CN106095042A (en) | 2016-06-06 | 2016-06-06 | Protection device and electronic equipment for electronic equipment |
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| Publication Number | Publication Date |
|---|---|
| CN106095042A true CN106095042A (en) | 2016-11-09 |
Family
ID=57448574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610391498.8A Pending CN106095042A (en) | 2016-06-06 | 2016-06-06 | Protection device and electronic equipment for electronic equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107272809A (en) * | 2017-08-14 | 2017-10-20 | 迈普通信技术股份有限公司 | Automatic switch electric installation and system |
| CN107426618A (en) * | 2017-01-26 | 2017-12-01 | 青岛海信电器股份有限公司 | Intelligent television and its under-voltage protection fault-tolerance approach |
| CN109586407A (en) * | 2018-11-14 | 2019-04-05 | 许继电气股份有限公司 | A kind of intelligent terminal and its power supply power-fail processing method |
| CN109688355A (en) * | 2018-12-27 | 2019-04-26 | 青岛海信电器股份有限公司 | A kind of display screen discharge control device of OLED TV |
| CN110942747A (en) * | 2018-09-25 | 2020-03-31 | 青岛海信电器股份有限公司 | OLED display device and control method thereof |
| WO2020077976A1 (en) * | 2018-10-15 | 2020-04-23 | 青岛海信电器股份有限公司 | Oled display device, oled television, and power supplying method therefor |
| US11200837B2 (en) | 2018-09-25 | 2021-12-14 | Hisense Visual Technology Co., Ltd. | OLED display device, and method for controlling the OLED display device |
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| CN102521208A (en) * | 2011-12-27 | 2012-06-27 | 河南汉威电子股份有限公司 | Novel microprocessor circuit |
| CN102568585A (en) * | 2010-12-17 | 2012-07-11 | 西安奇维测控科技有限公司 | Hardware circuit reliably carrying out data destruction |
| CN202918402U (en) * | 2012-09-29 | 2013-05-01 | 曹晓玉 | Circuit reset system of television set |
| CN203299741U (en) * | 2013-05-14 | 2013-11-20 | Tcl集团股份有限公司 | Power-down reset circuit of electronic terminal and electronic terminal |
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| JPS63146510A (en) * | 1986-12-09 | 1988-06-18 | Matsushita Electric Ind Co Ltd | Reset circuit |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107426618A (en) * | 2017-01-26 | 2017-12-01 | 青岛海信电器股份有限公司 | Intelligent television and its under-voltage protection fault-tolerance approach |
| CN107426619A (en) * | 2017-01-26 | 2017-12-01 | 青岛海信电器股份有限公司 | Intelligent television and its under-voltage protection fault-tolerance approach |
| CN107426618B (en) * | 2017-01-26 | 2019-11-29 | 青岛海信电器股份有限公司 | Smart television and its under-voltage protection fault-tolerance approach |
| CN107426619B (en) * | 2017-01-26 | 2019-12-06 | 青岛海信电器股份有限公司 | Intelligent television and undervoltage protection fault-tolerant method thereof |
| CN107272809A (en) * | 2017-08-14 | 2017-10-20 | 迈普通信技术股份有限公司 | Automatic switch electric installation and system |
| CN107272809B (en) * | 2017-08-14 | 2019-06-14 | 迈普通信技术股份有限公司 | It is automatically switched electric installation and system |
| CN110942747A (en) * | 2018-09-25 | 2020-03-31 | 青岛海信电器股份有限公司 | OLED display device and control method thereof |
| CN110942747B (en) * | 2018-09-25 | 2021-06-01 | 海信视像科技股份有限公司 | OLED display device and control method thereof |
| US11200837B2 (en) | 2018-09-25 | 2021-12-14 | Hisense Visual Technology Co., Ltd. | OLED display device, and method for controlling the OLED display device |
| WO2020077976A1 (en) * | 2018-10-15 | 2020-04-23 | 青岛海信电器股份有限公司 | Oled display device, oled television, and power supplying method therefor |
| CN109586407A (en) * | 2018-11-14 | 2019-04-05 | 许继电气股份有限公司 | A kind of intelligent terminal and its power supply power-fail processing method |
| CN109688355A (en) * | 2018-12-27 | 2019-04-26 | 青岛海信电器股份有限公司 | A kind of display screen discharge control device of OLED TV |
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Application publication date: 20161109 |