CN108510930A - Electronic device - Google Patents
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- Publication number
- CN108510930A CN108510930A CN201810227177.3A CN201810227177A CN108510930A CN 108510930 A CN108510930 A CN 108510930A CN 201810227177 A CN201810227177 A CN 201810227177A CN 108510930 A CN108510930 A CN 108510930A
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- China
- Prior art keywords
- electronic device
- display screen
- trigger signal
- reset chip
- circuit
- 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
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides a kind of electronic devices, the electronic device includes display screen, adjusts circuit and reset chip, the reset chip receives trigger signal and generates control signal according to the trigger signal, the control signal is for controlling the electronic device shutdown, the circuit that adjusts is for adjusting the voltage of load on the display screen when the electronic device shuts down, the phenomenon that flicker during shutdown to avoid the display screen.
Description
Technical field
The present invention relates to electronic device field more particularly to a kind of electronic devices.
Background technology
With the diversification and complication of electronic device, user is when using electronic device it is possible that Cartridge
It waits indefinitely situation, at this point, then needing electronic device carrying out forced shutdown.When electronic device carries out forced shutdown or shutdown,
The whole system power down that can make electronic device, to achieve the purpose that shutdown.However, electronic device display screen in power down
When, the phenomenon that display screen will appear flicker.Display screen flicker can damage display screen, and influence display screen uses the longevity
Life.
Invention content
The present invention provides a kind of electronic device, and the electronic device includes display screen, adjusts circuit and reset chip, institute
It states reset chip to receive trigger signal and generate control signal according to the trigger signal, the control signal is described for controlling
Electronic device shuts down, and the circuit that adjusts is for adjusting the electricity of load on the display screen when the electronic device shuts down
Pressure, the phenomenon that flicker during shutdown to avoid the display screen.
Compared to the prior art, electronic device of the invention includes adjusting circuit, and the adjusting circuit can be in the electricity
When sub-device is shut down, voltage of the load on the display screen of the electronic device is adjusted, during shutdown to avoid the display screen
The phenomenon that flickering, and then display screen flicker damages display screen.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the electronic device of one embodiment of the application.
Fig. 2 is the electrical block diagram of the first specific implementation mode of electronic device of the present invention.
Fig. 3 is the electrical block diagram of the second specific implementation mode of electronic device of the present invention.
Fig. 4 is the electrical block diagram of electronic device third specific implementation mode of the present invention.
Specific implementation mode
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 describes, 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, those of ordinary skill in the art are obtained every other under the premise of not making the creative labor
Embodiment shall fall within the protection scope of the present invention.
In the description of the embodiment of the present application, it is to be understood that the orientation or positional relationship of the instructions such as term " thickness " is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the application and simplifies to describe, rather than imply or refer to
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the application.
It is the structural schematic diagram of the electronic device of one embodiment of the application also referring to Fig. 1, Fig. 1.The electronics dress
1 is set to include but are not limited to as smart mobile phone, internet device (mobile internet device, MID), e-book, just
Take formula broadcast station (Play Station Portable, PSP) or personal digital assistant (Personal Digital
Assistant, PDA) etc. equipment.
The electronic device 1 includes display screen 10, adjusts circuit 20 and reset chip 30.The reset chip 30 receives
Trigger signal simultaneously generates control signal according to the trigger signal, and the control signal is for controlling the shutdown of the electronic device 1.
The circuit 20 that adjusts is used to adjust voltage of the load on the display screen 10 when the electronic device 1 shuts down, to avoid
The phenomenon that display screen 10 flickers during shutdown.
The display screen 10 includes but are not limited to the display screen of Organic Light Emitting Diode type, liquid crystal display etc..When
When the electronic device 1 needs shutdown or forced shutdown, the reset chip 30 receives the trigger signal.The electronics dress
Set 1 the case where needing forced shutdown include but the software that is not limited only in the electronic device 1 there are the abnormal conditions such as stuck.
Generating the mode of the trigger signal can be but be not limited only to following manner：It in one embodiment, can be by pressing institute
The power key for stating electronic device 1 is more than the first preset time (for example, 3S) to generate the trigger signal；In another embodiment
In, can by simultaneously press the electronic device 1 power key and other buttons (such as volume+key) it is default more than second when
Between (such as 5S) generate the trigger signal.
Wherein, the display screen 10 is connected with the reset chip 30, one end ground connection of the reset chip 30, the other end
The display screen 10 is connected, the adjusting circuit 20 is when the electronic device 1 shuts down for adjusting the display screen 10 and institute
The voltage at the connected node of reset chip 30 is stated, and then adjusts voltage of the load on the display screen 10.Specifically, described
Display screen 10 includes internal resistance, and the reset chip 30 includes internal resistance, since the display screen 10 is connected with the reset chip 30,
Therefore, the internal resistance of the display screen 10 is connected with the internal resistance of the reset chip 30.The display screen 10 and the reset chip
At the node being also connected with the internal resistance of the reset chip 30 for the internal resistance of the display screen 10 at 30 connected nodes.Described
When electronic device 1 shuts down, to primary voltage VCC at the node of the internal resistance of the display screen 10 and the internal resistance of the reset chip 30
It is divided, and obtains the voltage at the node, the voltage at the node is loaded on the display screen 10.Usually and
Speech, when the voltage at the node is less than or equal to the first predeterminated voltage, the voltage at the node can be identified as
Low level, at this point, the display screen 10 extinguishes；When voltage at the node is greater than or equal to the second predeterminated voltage,
Then the voltage at the node can be identified as high level, at this point, the display screen 10 will not extinguish, the state being remain on.
When voltage at the node is more than first predeterminated voltage and is less than second predeterminated voltage, then at this point, institute
Stating the voltage at node can not be identified, that is, and the voltage at the node can not be judged as high level or low level at this time,
To cause logical miss.And the voltage at node at this time is when be interfered and generate fluctuation, it may appear that is more than described
The case where second predeterminated voltage, can cause display screen 10 to can be lit again after extinguishing at this time.For example, described first is pre-
If voltage is chosen for 0.4V, second predeterminated voltage is chosen for 1.6V.Voltage at the node is more than described the
One predeterminated voltage and when less than second predeterminated voltage, in the present embodiment, for example, the voltage at the node is
When 1.0V, the voltage at the node is interfered and generates fluctuation, it is likely that can be more than 1.6V, at this point, in institute
It states during electronic device 1 shuts down and then will appear the case where display screen 10 flickers.
Referring to Fig. 2, Fig. 2 is the electrical block diagram of the first specific implementation mode of electronic device of the present invention.In this reality
It applies in mode, the adjusting circuit 20 includes first resistor R1, and the first resistor R1 connects with the internal resistance of the display screen 10.
The electronic device 1 is as previously described, includes in the present embodiment first resistor R1 with the adjustings circuit 20, and described the
One resistance R1 is introduced for connecting with the internal resistance of the display screen 10.Due to the display screen 10 and the reset chip 30
Series connection, therefore, the internal resistance of the display screen 10 is connected with the internal resistance of the reset chip 30.For the convenience of description, the display
The internal resistance of screen 10 at the node of the internal resistance of the reset chip 30 being connected labeled as A points, the internal resistance mark of the display screen 10
It is denoted as R10, the internal resistance of the reset chip 30 is labeled as R30.When no adjusting circuit 20, the voltage at A points
It is denoted as first voltage；It is added to after the adjusting circuit 20, the first resistor R1 adjusted in circuit 20 and the display
The internal resistance R10 series connection of screen 10, then, at this point, the voltage at A points is denoted as second voltage.Due to be added to the adjusting circuit 20 it
Afterwards, first resistor R1 connects with the internal resistance of the display screen 10, at this point, the internal resistance of the first resistor R1, the display screen 10
The internal resistance R30 series connection of R10 and the reset chip 30, therefore, the internal resistance R30/ (reset chips 30 of the reset chip 30
Internal resistance R30+ described in display screen 10 internal resistance R10+ described in first resistor R1) be less than the reset chip 30 internal resistance R30/
(the internal resistance R10 of display screen 10 described in the internal resistance R30+ of the reset chip 30), therefore, primary voltage VCC voltage value not
In the case of change, the second voltage is less than the first voltage.When the resistance value of the first resistor R1 is more than the first default electricity
When resistance value, then, the second voltage becomes less than the first predeterminated voltage, even if at this point, being interfered and making at A points
It obtains the voltage at A points to fluctuate, first predeterminated voltage will not be identified as high level, that is, in the electronic device 1
When shutdown, the voltage loaded on the display screen 10 of the electronic device 1 is low level, and the display screen 10 not can be lit.
Therefore, during shutdown, the display screen 10 will not be lighted electronic device 1 of the invention, that is, when the electronic device 1 shuts down,
The phenomenon that display screen 10 is not in splashette.
Referring to Fig. 3, Fig. 3 is the electrical block diagram of the second specific implementation mode of electronic device of the present invention.In this reality
It applies the electronic device 1 in mode and the circuit structure in the first specific implementation mode is essentially identical, the difference is that in this reality
It applies in mode, the adjusting circuit 20 further includes second resistance R2, the internal resistance of the second resistance R2 and the reset chip 30
R30 is in parallel.The adjusting circuit 20, which further includes second resistance R2, to further decrease load when the electronic device 1 shuts down
Voltage on the display screen 10.Therefore, when the electronic device 1 shuts down, the display screen 10 not can be lit, that is,
When the electronic device 1 shuts down, the phenomenon that display screen 10 is not in splashette.
Referring to Fig. 4, Fig. 4 is the electrical block diagram of electronic device third specific implementation mode of the present invention.In this reality
It applies in mode, the adjusting circuit 20 includes 3rd resistor R3, the internal resistance R30 of the 3rd resistor R3 and the reset chip 30
It is in parallel.The electronic device 1 is as previously described, includes in the present embodiment 3rd resistor R3 with the adjusting circuit 20, and
It is introduced for the 3rd resistor R3 is in parallel with the internal resistance R30 of the reset chip 30.By the display screen 10 and institute
It is in parallel to state reset chip 30, therefore, the internal resistance R10 of the display screen 10 is in parallel with the internal resistance R30 of the reset chip 30.In order to
It is A points to facilitate description, the vertex ticks that the internal resistance R10 of the display screen 10 is connected with the internal resistance R30 of the reset chip 30.
When not having adjusting circuit 20, the voltage of A points is denoted as tertiary voltage；It is added to after the adjusting circuit 20, it is described
The 3rd resistor R3 adjusted in circuit 20 is in parallel with the internal resistance R30 of the reset chip 30, then, at this point, the voltage at A points is denoted as
4th voltage.After being added to the adjusting circuit 20, the internal resistance R30 of the 3rd resistor R3 and the reset chip 30
Parallel connection, then, at this point, in the case where total voltage is constant, the 4th voltage is less than the tertiary voltage.When third electricity
When hindering the resistance value of R3 less than the second predetermined resistance value, the 4th voltage becomes less than the second predeterminated voltage, even if at this point,
It is interfered at the A points so that the voltage at A points fluctuates, second predeterminated voltage will not be identified as high electricity
It is flat, that is, second predeterminated voltage can be identified as low level.Therefore, when the electronic device 1 shuts down, the display screen
10 not can be lit, that is, when the electronic device 1 shuts down, the phenomenon that display screen 10 is not in splashette.
In conjunction with front electronic device first to the electronic device 1 described in third specific implementation mode, the reset chip
30 include switching circuit 31, and the switching circuit 31 includes trigger signal receiving terminal 31a, first end 31b and second end 31c.Institute
It states trigger signal receiving terminal 31a and controls institute for receiving the trigger signal, the first end 31b ground connection, the trigger signal
First end 31b and second end 31c conductings are stated, to generate the control signal, the control signal is via the second end
31c is exported.
The switching circuit 31 is thin film transistor (TFT) in the present embodiment, and the thin film transistor (TFT) includes grid, source
Pole and drain electrode.The grid is as the trigger signal receiving terminal 31a, and the source electrode is as the first end 31b, the drain electrode
As the second end 31c.In above-mentioned each embodiment, using the source electrode as the first end 31b, the drain electrode is made
To be illustrated for the second end 31c.It is to be appreciated that in other embodiments, the grid is as the triggering
Signal receiving end 31a, the drain electrode are used as the first end 31b, and the source electrode is as the second end 31c.
Further, in conjunction with above-mentioned each embodiment and specific embodiment, the electronic device 1 further includes control circuit
40, the control circuit 40 is used to, when the electronic device 1 is switched on or works normally, close the adjusting circuit 20；It is described
Control circuit 40 is used for when the electronic device 1 shuts down, and starts the adjusting circuit 20.Since the control circuit 40 can be with
The adjusting circuit 20 is closed when the electronic device 1 is switched on or works normally, to reduce the work(of the electronic device 1
Consumption.
When the electronic device 1 needs shutdown, the trigger signal of the switching circuit 31 in the reset chip 30 receives
31a is held to receive the trigger signal, the trigger signal controls the first end 31b and second end 31c conductings, and then produces
The raw control letter, the control signal are exported via the second end 31c.Then, under the action of adjusting circuit 20, add
The voltage being loaded on the display screen 10 reduces so that and voltage of the load on the display screen 10 is identified as low level, from
And make when the electronic device 1 shuts down, the display screen 10 not can be lit, and eliminates the electronic device 1 and is shutting down
When there is the phenomenon that splashette.
In each embodiment of diagram, the thin film transistor (TFT) is N-type TFT, and the trigger signal is height
Level.It is to be appreciated that in above-mentioned each implementation meal is steel, it is described to touch using the thin film transistor (TFT) as N-type TFT
It signals to be illustrated for high level.In other embodiments, the thin film transistor (TFT) is P-type TFT, institute
It is low level to state trigger signal.It is to be appreciated that the switching circuit 31 is also not limited to thin film transistor (TFT), in other embodiment party
In formula, the switching circuit 31 or triode etc..
Below by taking the concrete structure of electronic device 1 shown in Fig. 2 and the thin film transistor (TFT) are N-type TFT as an example
It is introduced come operation principle when shutting down to electronic device 1.When electronic device 1 needs forced shutdown, the N-type film is brilliant
The trigger signal receiving terminal 31a of body pipe receives the trigger signal of high level, and the trigger signal controls the first end 31b
And second end 31c conducting, since the first end 31b is grounded, then, the trigger signal control the first end 31b and
When the second end 31c conductings, the voltage of the second end 31c is zero.The control circuit 40 starts the adjusting circuit 20,
The internal resistance of the reset chip 30 connect with the first resistor R1 in the adjusting circuit 20, and due to the first resistor R1 and
The internal resistance of the display screen 10 is connected, by electric resistance partial pressure principle it is found that voltage of the load on the display screen 10 is pulled low, when
When the resistance value of first resistor R1 is more than first predetermined resistance value, the voltage loaded on the display screen 10 is low
Level, so that when the electronic device 1 shuts down, the phenomenon that display screen 10 is not in splashette.When the electronics fills
When setting 1 booting or normal work, then, the trigger signal receiving terminal 31a receives low level, then the first end 31b and described
Second end 31c cut-offs, then the zero potential that the first end 31b is loaded will not be transferred to the second end 31c, at this point, described
Display screen 10 loads high potential, then, the display screen 10 is lit.
Compared to the prior art, electronic device 1 of the invention includes adjusting circuit 20, and the adjusting circuit 20 can be in institute
When stating the shutdown of electronic device 1, voltage of the load on the display screen 10 of the electronic device 1 is adjusted, to avoid the display screen
10 the phenomenon that flickering during shutdown, and then the flicker of display screen 10 damages display screen 10.
It is the embodiment of the embodiment of the present invention above, it is noted that those skilled in the art are come
It says, under the premise of not departing from principle of the embodiment of the present invention, several improvements and modifications can also be made, these improvements and modifications
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of electronic device, which is characterized in that the electronic device includes display screen, adjusts circuit and reset chip, institute
It states reset chip to receive trigger signal and generate control signal according to the trigger signal, the control signal is described for controlling
Electronic device shuts down, and the circuit that adjusts is for adjusting the electricity of load on the display screen when the electronic device shuts down
Pressure, the phenomenon that flicker during shutdown to avoid the display screen.
2. electronic device as described in claim 1, which is characterized in that the display screen is connected with the reset chip, described
One end of reset chip is grounded, and the other end connects the display screen, and the adjusting circuit is used for when the electronic device shuts down
The voltage at the node that the display screen is connected with the reset chip is adjusted, and then adjusts the electricity of load on the display screen
Pressure.
3. electronic device as claimed in claim 2, which is characterized in that the adjusting circuit includes first resistor, and described first
Resistance is connected with the internal resistance of the display screen.
4. electronic device as claimed in claim 3, which is characterized in that the adjusting circuit further includes second resistance, and described
Two resistance are in parallel with the internal resistance of the reset chip.
5. electronic device as claimed in claim 2, which is characterized in that the adjusting circuit further includes 3rd resistor, and described
Three resistance are in parallel with the internal resistance of the reset chip.
6. the electronic device as described in 5 any one of claim 1 ￣, which is characterized in that the reset chip includes switch electricity
Road, the switching circuit include trigger signal receiving terminal, first end and second end, and the trigger signal receiving terminal is for receiving institute
Trigger signal is stated, the first end ground connection, the trigger signal controls the first end and second end conducting, to generate
Control signal is stated, the control signal is exported via the second end.
7. electronic device as claimed in claim 6, which is characterized in that the switching circuit is thin film transistor (TFT), the film
Transistor includes grid, source electrode and drain electrode, and the grid is as the trigger signal receiving terminal, the drain electrode conduct described the
One end, the source electrode is as the second end；Alternatively, the grid is as the trigger signal receiving terminal, the source electrode conduct
The first end, the drain electrode are used as the second end.
8. electronic device as claimed in claim 7, which is characterized in that the thin film transistor (TFT) is N-type TFT, described
Trigger signal is high level.
9. electronic device as claimed in claim 7, which is characterized in that the thin film transistor (TFT) is P-type TFT, described
Trigger signal is low level.
10. electronic device as described in claim 1, which is characterized in that the electronic device further includes control circuit, the control
Circuit processed is used to, in the electronic device startup or normal work, close the adjusting circuit；The control circuit is used for
When the electronic device shutdown, start the adjusting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810227177.3A CN108510930B (en) | 2018-03-19 | 2018-03-19 | Electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810227177.3A CN108510930B (en) | 2018-03-19 | 2018-03-19 | Electronic device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108510930A true CN108510930A (en) | 2018-09-07 |
| CN108510930B CN108510930B (en) | 2021-06-15 |
Family
ID=63376768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810227177.3A Active CN108510930B (en) | 2018-03-19 | 2018-03-19 | Electronic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108510930B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108510930B (en) | 2021-06-15 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Applicant before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |
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