CN205862768U - Display device - Google Patents
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- CN205862768U CN205862768U CN201620799118.XU CN201620799118U CN205862768U CN 205862768 U CN205862768 U CN 205862768U CN 201620799118 U CN201620799118 U CN 201620799118U CN 205862768 U CN205862768 U CN 205862768U
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Abstract
A kind of display device, including: display screen, described display screen has default acquisition interface；Mainboard, described mainboard has default test interface；Described default acquisition interface is connected with described default test interface, and described default test interface is for detecting the voltage signal of described default acquisition interface；And processor, described processor is connected with described mainboard, and described processor for judging the duty of described display screen according to described voltage signal, and start repid discharge flow process when the duty that judged result is powered-off fault.Above-mentioned display device, voltage signal by the default acquisition interface on the default test interface detecting display screen on mainboard, processor judges the duty of display screen according to voltage signal, and repid discharge flow process is started when the duty that judged result is powered-off fault, to discharge the voltage of default acquisition interface leads ends rapidly, improve the display screen exhibit stabilization when powered-off fault and the service life of display screen.
Description
Technical field
This utility model relates to electronic circuit field, particularly relates to a kind of display device.
Background technology
Along with the development of electronic technology, the size of the display screen of electronic equipment such as mobile phone, flat board etc. is increasing, screen
The ratio accounted in the profile of electronic equipment is the most increasing so that the display effect of display screen is gradually paid attention to.Electronics
The screen of equipment is critically important parts, in order to ensure the performance of its stable display, its power on and lower electricity all can strictly by
Sighting target accurate, the flow process of safety carries out.But some powered-off faults accidentally, or probabilistic powered-off fault
In, the meeting that powered-off fault situation is light causes screen to polarize, and display is turned white or screen temporarily flashes, and powered-off fault situation is serious
Then can make to drive IC to enter Latch up, i.e. latch-up, cause the damage of IC, even burn out IC, so that screen shows
Show exception, do not show.
But, powered-off fault is typically the supplying cell of the process of some unexpected power-off, such as electronic equipment and is pulled out suddenly
Fall, and for example the adapter of screen and mainboard come loose suddenly so that electronic equipment enters abnormal flow process thus the voltage that causes
Interrupt, there is not regularity due to powered-off fault, cause the display screen of electronic equipment cannot normally process powered-off fault
Situation.
Utility model content
Based on this, it is necessary to for how to improve the display screen exhibit stabilization when powered-off fault and how to improve aobvious
The technical problem in the service life etc. of display screen, it is provided that a kind of display device.
A kind of display device, including: display screen, described display screen has default acquisition interface；Mainboard, described mainboard has
Preset test interface；Described default acquisition interface is connected with described default test interface, and described default test interface is used for detecting
The voltage signal of described default acquisition interface；And processor, described processor is connected with described mainboard, and described processor is used for
Judge the duty of described display screen according to described voltage signal, and open when the duty that judged result is powered-off fault
Dynamic repid discharge flow process.
Wherein in an embodiment, described default acquisition interface is input voltage port or the reset of described display screen
Port, described default test interface is the digital-to-analogue conversion interface of described mainboard.
Wherein in an embodiment, also include that divider resistance R1, divider node A1 and divider resistance R2, described presetting adopt
Collection interface is the input voltage port of described display screen, and described default test interface is the universaling I/O port of described mainboard；Described defeated
Enter voltage port and pass sequentially through described divider resistance R1, described divider node A1 and described divider resistance R2 ground connection, described general
I/O mouth is connected with described divider node A1.
Wherein in an embodiment, also include that trigger C1, described default acquisition interface are the input of described display screen
Voltage port, described default test interface is the interrupt interface of described mainboard；The input of described trigger C1 and described input
Voltage port connects, and outfan is connected with described interrupt interface.
Wherein in an embodiment, described default acquisition interface is the reseting port of described display screen, described default survey
Mouth of trying is the universaling I/O port of described mainboard.
Wherein in an embodiment, also include that trigger C2, described default acquisition interface are the reset of described display screen
Port, described default test interface is the interrupt interface of described mainboard；The input of described trigger C2 and described reseting port
Connecting, outfan is connected with described interrupt interface.
Wherein in an embodiment, described display screen has one group of display screen interface, described one group of display screen interface tool
Having described default acquisition interface, described mainboard has one group of detecting interface, and described one group of detecting interface has described default test
Interface.
Wherein in an embodiment, described one group of display screen interface is provided with output voltage port, described default collection
Interface is described output voltage port, and described default test interface is the digital-to-analogue conversion interface of described mainboard.
Wherein in an embodiment, also including divider resistance R3, divider node A2 and divider resistance R4, described one group shows
Display screen interface is provided with output voltage port, and described default acquisition interface is described output voltage port, and described default test connects
Mouth is the universaling I/O port of described mainboard；Described output voltage port passes sequentially through described divider resistance R3, described divider node A2
With described divider resistance R4 ground connection, described universaling I/O port is connected to described divider node A2.
Wherein in an embodiment, also include that trigger C3, described one group of display screen interface are provided with output voltage terminal
Mouthful, described default acquisition interface is described output voltage port, and described default test interface is the interrupt interface of described mainboard；Institute
The input stating trigger C3 is connected with described output voltage port, and outfan is connected with described interrupt interface.
Above-mentioned display device, by the voltage of the default acquisition interface on the default test interface detecting display screen on mainboard
Signal, processor judges the duty of display screen according to voltage signal, and is the duty of powered-off fault in judged result
Shi Qidong repid discharge flow process, to discharge the voltage of default acquisition interface leads ends rapidly, improves display screen and is extremely falling
Exhibit stabilization during electricity and the service life of display screen.
Accompanying drawing explanation
Fig. 1 is the structural representation of display device in an embodiment；
Fig. 2 is the electrical block diagram of display device in an embodiment；
Fig. 3 is the electrical block diagram of display device in another embodiment；
Fig. 4 is the electrical block diagram of display device in another embodiment；
Fig. 5 is the electrical block diagram of display device in another embodiment；
Fig. 6 is the electrical block diagram of display device in another embodiment；
Fig. 7 is the electrical block diagram of display device in another embodiment；
Fig. 8 is the electrical block diagram of display device in another embodiment；
Fig. 9 is the electrical block diagram of display device in another embodiment；
Figure 10 is the electrical block diagram of display device in another embodiment.
Detailed description of the invention
Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below in conjunction with the accompanying drawings to this
The detailed description of the invention of utility model is described in detail.Elaborate a lot of detail in the following description so that fully
Understand this utility model.But this utility model can be implemented to be much different from alternate manner described here, this area
Technical staff can do similar improvement in the case of this utility model intension, and therefore this utility model is not by following public affairs
The restriction of the specific embodiment opened.
Referring to Fig. 1, it is the structural representation of display device in an embodiment, and a kind of display device 10 includes display
Screen 101, mainboard 102 and processor 103.Display screen 101 has default acquisition interface 104.Mainboard 102 has default test interface
105.Preset acquisition interface 104 to be connected with default test interface 105, preset test interface 105 and be used for detecting default acquisition interface
The voltage signal of 104.Processor 103 is connected with mainboard 102, and processor 103 is for judging display screen 101 according to voltage signal
Duty, and repid discharge flow process is started when the duty that judged result is powered-off fault.
Above-mentioned display device, detects the default collection on display screen 101 by the default test interface 105 on mainboard 102
The voltage signal of interface 104, processor 103 judges the duty of display screen 101 according to voltage signal, and in judged result is
Repid discharge flow process is started, to discharge the electricity of the leads ends of default acquisition interface 104 rapidly during the duty of powered-off fault
Pressure, improves the display screen 101 exhibit stabilization when powered-off fault and improves the service life of display screen 101.
Further, default acquisition interface on display screen 101 104 is for having the most important voltage on display screen 101
The interface of signal.The improper fluctuation of such as this important voltage signal may result in display screen 101 and the bigger of display effect occur
Change or cause the damage of display screen 101.Thus, by the detecting of the important voltage signal to display screen, judge display
Whether screen is in powered-off fault state, reinforms mainboard and timely responds to the power down flow process of display screen.
In one embodiment, display screen 101 has one group of display screen interface, and one group of display screen interface has default acquisition interface
104.Mainboard 102 has one group of detecting interface, and one group of detecting interface has default test interface 105.It is appreciated that one group of display
Screen interface there are multiple interface with the most important voltage signal, for different display screen interface, can have multiple
The mode of detecting voltage signal, therefore there is also, in one group of detecting interface, the interface detecting multiple important voltage signals.
Input voltage port, reseting port and the output electricity being display screen 101 with default acquisition interface 104 separately below
As a example by pressure side mouth, corresponding, respectively with default test interface 105 be mainboard 102 digital-to-analogue conversion interface, universaling I/O port and
As a example by interrupt interface, this utility model is further described.
Referring to Fig. 2, in an embodiment, display screen 101 has one group of display screen interface J1.Mainboard 102 has one group to be detectd
Survey interface BB1.In the present embodiment, as a example by model FPC5033-2.Preset the input voltage that acquisition interface 104 is display screen 101
Port VCC.Preset the digital-to-analogue conversion interface ADC that test interface 105 is mainboard 102.Input voltage port VCC connects with digital-to-analogue conversion
Mouth ADC connects.
Concrete, in display screen side, by the input voltage of the input voltage port VCC of detecting display screen, work as input
When voltage is less than certain value, it is believed that the display module of display screen 101 is in powered-off fault state.With conventional input voltage VCC
(2.8V), AVDD (5.5V), as a example by AVEE (-5.5V), IOVCC (1.8V), its normal fluctuation voltage is 0.1V, then when input electricity
Force down when the 0.1V of above-mentioned voltage, it is believed that display screen enters powered-off fault state.In mainboard side, by digital-to-analogue conversion interface
The circuit of ADC, timing detecting input voltage, when input voltage exception, then start screen powered-off fault interrupt mechanism.
Referring to Fig. 3, in an embodiment, display screen 101 has one group of display screen interface J3.Mainboard 102 has one group to be detectd
Survey interface BB3.In the present embodiment, as a example by model FPC5033-2.Preset the reseting port that acquisition interface 104 is display screen 101
RESET, presets the digital-to-analogue conversion interface ADC that test interface 105 is mainboard 102.Reseting port RESET and digital-to-analogue conversion interface
ADC connects.
Concrete, in display screen side, by detecting the significant I/O voltage of display screen module end.In the present embodiment,
As a example by the reset signal of reseting port RESET, under its normal condition, the level identical with interface IOVCC can be in, work as detecting
To its less than 0.3*IOVCC level time, then it is assumed that display screen enter powered-off fault state；For this kind of detecting, so that go out
During existing powered-off fault, the level of reseting port can be detected rapidly, can add an electricity to GND on reseting port
Resistance, such as, this resistance is 50～300K.In mainboard side, by the circuit of digital-to-analogue conversion interface ADC, timing detecting input electricity
Pressure, when input voltage exception, then starts screen powered-off fault interrupt mechanism.
Referring to Fig. 4, in an embodiment, display screen 101 has one group of display screen interface J8.Mainboard 102 has one group to be detectd
Survey interface BB8.Display device also includes divider resistance R1, divider node A1 and divider resistance R2.Display screen 101 has one group and shows
Display screen interface J1.Mainboard 102 has one group of detecting interface BB1.In the present embodiment, as a example by model FPC5033-2.Preset and gather
Interface 104 is the input voltage port VCC of display screen 101.Preset the universaling I/O port GPIO that test interface 105 is mainboard 102.
Input voltage port VCC passes sequentially through divider resistance R1, divider node A1 and divider resistance R2 ground connection, universaling I/O port GPIO with
Divider node A1 connects.
Concrete, in display screen side, by the input voltage of the input voltage port VCC of detecting display screen, work as input
When voltage is less than certain value, it is believed that the display module of display screen 101 is in powered-off fault state.With conventional input voltage VCC
(2.8V), AVDD (5.5V), as a example by AVEE (-5.5V), IOVCC (1.8V), its normal fluctuation voltage is 0.1V, then when input electricity
Force down when the 0.1V of above-mentioned voltage, it is believed that display screen enters powered-off fault state.
In mainboard side, when detecting is that I/O mouth voltage is, can be by the way of I/O mouth is detected, when detecting this I/
When O mouth is low, then start screen powered-off fault interrupt mechanism.When the voltage of detecting is input or output voltage, Ke Yitong
Cross the level that this voltage can be detected by divider resistance to I/O mouth.Such as I/O mouth is judged as that low level is 0.9V, as
Fruit detecting voltage is VCC2.8V, when it is abnormal less than 2.5V, then can pass through divider resistance 185K and 95K dividing potential drop, acquiescence
Under state, I/O mouth state is 0.95V, it is judged that for H, as abnormal voltage 2.5V, I/O mouth voltage is 0.84V, it is judged that for L.The party
Formula precision is poor is only applicable to abnormal level and the bigger situation of normal level difference.
Referring to Fig. 5, in an embodiment, display screen 101 has one group of display screen interface J2.Mainboard 102 has one group to be detectd
Survey interface BB2.In the present embodiment, as a example by model FPC5033-2.Display device also includes trigger C1.Preset acquisition interface
104 is the input voltage port VCC of display screen 101.Preset the interrupt interface INT that test interface 105 is mainboard 102.Trigger
The input IN of C1 is connected with input voltage port VCC, and outfan OUT is connected with interrupt interface INT.
Concrete, in display screen side, by detecting the input voltage of display screen module, when voltage is less than certain value, recognize
It is in powered-off fault state for module.With conventional input voltage VCC (2.8V), AVDD (5.5V), AVEE (-5.5V), IOVCC
(1.8V) as a example by, its normal fluctuation voltage is 0.1V, then when input voltage is less than the 0.1V of above-mentioned voltage, it is believed that display screen enters
Enter powered-off fault state.In mainboard side, by the hardware trigger circuit of trigger C1, the outfan of this circuit can directly connect
Connect the interrupt signal foot of mainboard.When voltage is less than certain value, then this circuit turn-on, start the powered-off fault mechanism of screen.
Referring to Fig. 6, in an embodiment, display screen 101 has one group of display screen interface J4.Mainboard 102 has one group to be detectd
Survey interface BB4.Display device also includes trigger C2.Preset the reseting port that acquisition interface 104 is display screen 101, preset and survey
Try the interrupt interface that mouth 105 is mainboard 102.The input of trigger C2 is connected with reseting port, outfan and interrupt interface
Connect.
Concrete, in display screen side, by detecting the significant I/O voltage of display screen module end.In the present embodiment,
As a example by the reset signal of reseting port RESET, under its normal condition, the level identical with interface IOVCC can be in, work as detecting
To its less than 0.3*IOVCC level time, then it is assumed that display screen enter powered-off fault state；For this kind of detecting, so that go out
During existing powered-off fault, the level of reseting port can be detected rapidly, can add an electricity to GND on reseting port
Resistance, such as, this resistance is 50～300K.In mainboard side, by the hardware trigger circuit of trigger C2, the outfan of this circuit
The interrupt signal foot of mainboard can be directly connected to.When voltage is less than certain value, then this circuit turn-on, start the powered-off fault of screen
Mechanism.
Referring to Fig. 7, in an embodiment, display screen 101 has one group of display screen interface J6.Mainboard 102 has one group to be detectd
Survey interface BB6.In the present embodiment, as a example by model FPC5033-2B.One group of display screen 101 interface J6 is provided with output voltage terminal
Mouth VGH, presetting acquisition interface 104 is output voltage port VGH, presets the digital-to-analogue conversion interface that test interface 105 is mainboard 102
ADC.Output voltage port VGH is connected with digital-to-analogue conversion interface ADC.
Concrete, in display screen side, by the important symbol output voltage of the module end of detecting display screen such as
VGH, VGL etc., the present embodiment is as a example by VGH, when its voltage is less than its normal fluctuation range, then it is assumed that screen enters and extremely falls
Power mode.Such as normal voltage VGH=15V, VGL=-10V, its fluctuation voltage is 0.2V, then when VGH is less than 14.8, or VGL
During less than-9.8V, it is believed that display screen enters powered-off fault state.When using detecting output voltage, owing to outfan does not generally have
Have to set up with mainboard and be connected, so needing to be established a connection with mainboard by this signal especially, as in the input being connected with mainboard
End increases a pin, or newly increases a test point, is connected with mainboard by other means.In mainboard side, pass through ADC
Circuit, timing detecting voltage, when electric voltage exception, then start screen powered-off fault interrupt mechanism.
Referring to Fig. 8, in an embodiment, display screen 101 has one group of display screen interface J9.Mainboard 102 has one group to be detectd
Survey interface BB9.In the present embodiment, as a example by model FPC5033-2B.Display device also includes divider resistance R3, divider node A2
With divider resistance R4.One group of display screen 101 interface is provided with output voltage port VGH, and presetting acquisition interface 104 is output voltage
Port VGH, presets the universaling I/O port GPIO that test interface 105 is mainboard 102.Input voltage port passes sequentially through divider resistance
R3, divider node A2 and divider resistance R4 ground connection, universaling I/O port is connected to divider node A2.
Concrete, in display screen side, by detecting the important symbol output voltage (such as VGH, VGL etc.) of module end,
When its voltage is less than its normal fluctuation range, then it is assumed that screen enters powered-off fault pattern.Such as normal voltage VGH=15V,
VGL=-10V, its fluctuation voltage is 0.2V, then when VGH is less than 14.8, or when VGL is less than-9.8V, it is believed that display screen enters
Powered-off fault state.When using detecting output voltage, usually not set up with mainboard due to outfan and be connected, so needing spy
This signal is not established a connection with mainboard, as increased a pin at the input being connected with mainboard, or newly increase one
Individual test point, is connected with mainboard by other means.When detecting is that I/O mouth voltage is, the side that can be detected by I/O mouth
Formula, when detecting this I/O mouth and being low, then starts screen powered-off fault interrupt mechanism.
In mainboard side, when the voltage of detecting is input or output voltage, can be by divider resistance by this voltage
Be divided to level that I/O mouth can detect (as I/O mouth is judged as that low level is 0.9V, if detecting voltage is VCC2.8V,
When it is abnormal less than 2.5V, then can pass through divider resistance 185K and 95K dividing potential drop, under default conditions, I/O mouth state is
0.95V, it is judged that for H, as abnormal voltage 2.5V, I/O mouth voltage is 0.84V, it is judged that for L.It should be noted which is smart
Spend and poor be only applicable to abnormal level and the normal level bigger situation of difference.
Referring to Fig. 9, in an embodiment, display screen 101 has one group of display screen interface J7.Mainboard 102 has one group to be detectd
Survey interface BB7.In the present embodiment, as a example by model FPC5033-2B.Display device the most also includes trigger C3.One group of display screen
101 interfaces are provided with output voltage port, and presetting acquisition interface 104 is output voltage port VGH, preset test interface 105 and are
The interrupt interface INT of mainboard 102.The input IN of trigger C3 is connected with output voltage port VGH, outfan OUT and interruption
Interface INT connects.
Concrete, the important symbol output voltage (such as VGH, VGL etc.) of detecting module end, when its voltage is normal less than it
During fluctuation range, then it is assumed that screen enters powered-off fault pattern.Such as normal voltage VGH=15V, VGL=-10V, its fluctuation voltage
For 0.2V, then it is less than 14.8 as VGH, or when VGL is less than-9.8V, it is believed that display screen enters powered-off fault state.When use is detectd
When surveying output voltage, usually not set up with mainboard due to outfan and be connected, so needing to be set up with mainboard by this signal especially
Annexation, as increased a pin at the input being connected with mainboard, or newly increases a test point, by other means
It is connected with mainboard.By hardware trigger circuit, the outfan of this circuit can be directly connected to the interrupt signal foot of mainboard.Work as voltage
During less than certain value, then this circuit turn-on, start the powered-off fault mechanism of screen.
Referring to Figure 10, in an embodiment, display screen 101 has one group of display screen interface J5.Mainboard 102 has one group to be detectd
Survey interface BB5.In the present embodiment, as a example by model FPC5033-2.Preset the reseting port that acquisition interface 104 is display screen 101
RESET.Preset the universaling I/O port GPIO that test interface 105 is mainboard 102.Reseting port RESET and universaling I/O port GPIO is even
Connect.
Concrete, in display screen side, by the significant I/O voltage of the module end of detecting display screen.With reset terminal
As a example by the reset signal of mouth RESET, under its normal condition, the level identical with interface IOVCC can be in, be less than when detecting it
During 0.3*IOVCC level, then it is assumed that display screen enters powered-off fault state；For this kind of detecting, so that occur extremely falling
During electricity, the level of reseting port can be detected rapidly, can add the resistance to GND on reseting port, such as,
This resistance is 50～300K.
In mainboard side, when the voltage of detecting is input or output voltage, can be by divider resistance by this voltage
Be divided to level that I/O mouth can detect (as I/O mouth is judged as that low level is 0.9V, if detecting voltage is VCC2.8V,
When it is abnormal less than 2.5V, then can pass through divider resistance 185K and 95K dividing potential drop, under default conditions, I/O mouth state is
0.95V, it is judged that for H, as abnormal voltage 2.5V, I/O mouth voltage is 0.84V, it is judged that for L.It should be noted which is smart
Spend and poor be only applicable to abnormal level and the normal level bigger situation of difference.
In one embodiment, powered-off fault mechanism includes i.e. responding lower electric current journey, comprising: respond normal power down flow process,
Such as: displayoff → sleepin → standby → poweroff；And, respond non-normal repid discharge flow process, this
Individual can define relevant signal according to the relevant design of LCD with IC, quickly by LCD, and the voltage of IC leads ends is put rapidly
Falling, this requirements of process specific customization, the speed of not overdischarge is fast compared with the former normal flow.
The beneficial effects of the utility model include:
1) after solving powered-off fault, the display effect problem of screen.
2) prevent because of powered-off fault, and the screen damage caused, damage.
3) this utility model can also apply to other the protection of vitals, for detecting its important voltage letter
Number, when finding abnormal signal, response is interrupted, and carries out rapidly discharge flow path, protects this parts.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the common skill of this area
For art personnel, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (10)
1. a display device, it is characterised in that including:
Display screen, described display screen has default acquisition interface；
Mainboard, described mainboard has default test interface；
Described default acquisition interface is connected with described default test interface, and described default test interface is used for detecting described presetting and adopts
The voltage signal of collection interface；And
Processor, described processor is connected with described mainboard,
Described processor for judging the duty of described display screen according to described voltage signal, and is abnormal in judged result
Repid discharge flow process is started during the duty of power down.
Display device the most according to claim 1, it is characterised in that described default acquisition interface is the defeated of described display screen
Entering voltage port or reseting port, described default test interface is the digital-to-analogue conversion interface of described mainboard.
Display device the most according to claim 1, it is characterised in that also include divider resistance R1, divider node A1 and divide
Piezoresistance R2,
Described default acquisition interface is the input voltage port of described display screen, and described default test interface is the logical of described mainboard
Use I/O mouth；
Described input voltage port passes sequentially through described divider resistance R1, described divider node A1 and described divider resistance R2 and connects
Ground, described universaling I/O port is connected with described divider node A1.
Display device the most according to claim 1, it is characterised in that also include trigger C1,
Described default acquisition interface is the input voltage port of described display screen, and described default test interface is in described mainboard
Slave interrupt interface；The input of described trigger C1 is connected with described input voltage port, and outfan is connected with described interrupt interface.
Display device the most according to claim 1, it is characterised in that described default acquisition interface is answering of described display screen
Bit port, described default test interface is the universaling I/O port of described mainboard.
Display device the most according to claim 1, it is characterised in that also include trigger C2,
Described default acquisition interface is the reseting port of described display screen, and described default test interface is the middle disconnecting of described mainboard
Mouthful；
The input of described trigger C2 is connected with described reseting port, and outfan is connected with described interrupt interface.
Display device the most according to claim 1, it is characterised in that described display screen has one group of display screen interface, institute
Stating one group of display screen interface and have described default acquisition interface, described mainboard has one group of detecting interface, and described one group of detecting connects
Mouth has described default test interface.
Display device the most according to claim 7, it is characterised in that described one group of display screen interface is provided with output voltage
Port, described default acquisition interface is described output voltage port, and described default test interface is the digital-to-analogue conversion of described mainboard
Interface.
Display device the most according to claim 7, it is characterised in that also include divider resistance R3, divider node A2 and divide
Piezoresistance R4,
Described one group of display screen interface is provided with output voltage port, and described default acquisition interface is described output voltage port,
Described default test interface is the universaling I/O port of described mainboard；
Described output voltage port passes sequentially through described divider resistance R3, described divider node A2 and described divider resistance R4 and connects
Ground, described universaling I/O port is connected to described divider node A2.
Display device the most according to claim 7, it is characterised in that also include trigger C3,
Described one group of display screen interface is provided with output voltage port, and described default acquisition interface is described output voltage port,
Described default test interface is the interrupt interface of described mainboard；
The input of described trigger C3 is connected with described output voltage port, and outfan is connected with described interrupt interface.
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| CN201620799118.XU CN205862768U (en) | 2016-07-26 | 2016-07-26 | Display device |
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|---|---|---|---|
| CN201620799118.XU CN205862768U (en) | 2016-07-26 | 2016-07-26 | Display device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452305A (en) * | 2017-08-17 | 2017-12-08 | 西安易朴通讯技术有限公司 | A kind of current sensing means detected for screen, system and method |
| CN109300446A (en) * | 2018-12-12 | 2019-02-01 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN109346022A (en) * | 2018-12-11 | 2019-02-15 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN112750389A (en) * | 2019-10-31 | 2021-05-04 | 海信视像科技股份有限公司 | Testing device |
| CN113539199A (en) * | 2020-04-21 | 2021-10-22 | 张焕乡 | Pray for blessing lamp device with dual-purpose panel display function |
| WO2021223460A1 (en) * | 2020-05-08 | 2021-11-11 | 深圳Tcl数字技术有限公司 | Machine core main board and display device |
-
2016
- 2016-07-26 CN CN201620799118.XU patent/CN205862768U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107452305A (en) * | 2017-08-17 | 2017-12-08 | 西安易朴通讯技术有限公司 | A kind of current sensing means detected for screen, system and method |
| CN107452305B (en) * | 2017-08-17 | 2023-07-14 | 西安易朴通讯技术有限公司 | Current detection device, system and method for screen detection |
| CN109346022A (en) * | 2018-12-11 | 2019-02-15 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN109300446A (en) * | 2018-12-12 | 2019-02-01 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN109300446B (en) * | 2018-12-12 | 2022-05-06 | 惠科股份有限公司 | Protection method of display panel, display panel and computer readable storage medium |
| CN112750389A (en) * | 2019-10-31 | 2021-05-04 | 海信视像科技股份有限公司 | Testing device |
| CN113539199A (en) * | 2020-04-21 | 2021-10-22 | 张焕乡 | Pray for blessing lamp device with dual-purpose panel display function |
| WO2021223460A1 (en) * | 2020-05-08 | 2021-11-11 | 深圳Tcl数字技术有限公司 | Machine core main board and display device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 516000 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 23 District Patentee after: CHINA DISPLAY OPTOELECTRONICS TECHNOLOGY (HUIZHOU) Co.,Ltd. Address before: 516000 Guangdong province Huizhou Zhongkai hi tech Development Zone No. 23 District Patentee before: TCL DISPLAY TECHNOLOGY (HUIZHOU) Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 |