CN207602192U - A kind of lighting jig of display panel - Google Patents
A kind of lighting jig of display panel Download PDFInfo
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- CN207602192U CN207602192U CN201721392896.8U CN201721392896U CN207602192U CN 207602192 U CN207602192 U CN 207602192U CN 201721392896 U CN201721392896 U CN 201721392896U CN 207602192 U CN207602192 U CN 207602192U
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- display panel
- switch module
- lighting jig
- processor
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- 238000001514 detection method Methods 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims description 16
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 3
- 230000005055 memory storage Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model embodiment discloses a kind of lighting jig of display panel.The lighting jig of the display panel includes：Switch module；Safe digital memory card slot is connected to power supply through switch module, for grafting safe digital storage card；Current detection circuit, for acquiring the electric current that power supply flows into the safe digital storage card；Processor is electrically connected with the output terminal of current detection circuit, is electrically connected with the control terminal of switch module, for when monitoring that electric current is more than pre-set current value, control switch module to disconnect.The technical solution of the utility model embodiment can control switch module to disconnect in time, to avoid without knowing it, the safe digital storage card burnt is injected lighting jig, causes burning for the devices such as the processor of the lighting jig of display panel.
Description
Technical field
The utility model is related to lighting jig technology more particularly to a kind of lighting jigs of display panel.
Background technology
Display panel is after completing, it usually needs carries out lighting test to display panel using lighting jig, i.e.,
Loading signal is carried out to the test point position on display panel by lighting jig, to test the display quality of display panel.
SD card (Secure Digital Memory Card, safe digital storage card) is a kind of based on semiconductor flash memory work
The storage card of skill has the multifunctional storage card of the various features such as large capacity, read or write speed fast, high-performance, safety.It usually will be aobvious
Show that panel needs grey menu to be shown and the timing control information of pictorial information and various sizes of display panel, copy
Into SD card, so that lighting jig uses.When card reader is used to copy required test information to SD card from a host, warp
Can often SD card be caused to burn, and be not easy to find, if without knowing it, when the SD card burnt is injected lighting jig, meeting
When powering on, lighting jig is caused also to burn.
Utility model content
The utility model embodiment provides a kind of lighting jig of display panel, can disconnect faulty circuit in time, to avoid
Burn out the devices such as the processor of the lighting jig of display panel.
The utility model embodiment provides a kind of lighting jig of display panel, including：
Switch module；
Safe digital memory card slot, the safe digital memory card slot are connected to power supply through switch module, use
In grafting safe digital storage card；
Current detection circuit, the current detection circuit are electrically connected between the power supply and the switch module,
For acquiring the electric current that power supply flows into safe digital storage card；
Processor is electrically connected with the output terminal of current detection circuit, while is electrically connected with the control terminal of switch module, is used for
When monitoring that electric current is more than pre-set current value, control switch module disconnects.
Further, switch module includes MOS transistor, triode or relay.
Further, switch module includes PMOS transistor, wherein, the control of the grid and switch module of PMOS transistor
End electrical connection, the source electrode of PMOS transistor are electrically connected with power supply；The drain electrode of PMOS transistor and safe digital storage card card
Slot is electrically connected.
Further, switch module includes PNP triode, wherein, the base stage of PNP triode and the control terminal of switch module
Electrical connection, the emitter of PNP triode are electrically connected with power supply；The collector of PNP triode and safe digital storage card card
Slot is electrically connected.
Further, switch module includes the first relay, wherein, the first end and switching molding of the coil of the first relay
The control terminal electrical connection of block, the second end ground connection of the coil of the first relay, the first end of the contact of the first relay and power supply
Power electric connection；The second end of the contact of first relay is electrically connected with safe digital memory card slot.
Further, processor is integrated with Serial Peripheral Interface (SPI), and processor is through serial peripheral interface bus and safe digital
Storage card is electrically connected.
Further, current detection circuit includes sampling resistor, operational amplifier and analog-digital converter；Wherein, sampling electricity
Resistance is connected in series with switch module；The first end and second end of sampling resistor respectively with the in-phase input end of operational amplifier and anti-
Phase input terminal is electrically connected, and the output terminal of operational amplifier is electrically connected with the input terminal of analog-digital converter, the output of analog-digital converter
End is electrically connected with processor.
Further, analog-digital converter is integrated in processor.
Further, warning circuit is further included, is electrically connected with processor, processor, which is additionally operable to work as, monitors that electric current is more than pre-
If during current value, send a control signal to warning circuit.
Further, warning circuit includes following at least one：Light emitting diode and buzzer.
The technical solution of the utility model embodiment is acquired by current detection circuit and flows into safe digital by power supply
The electric current of storage card, when processor monitor electric current be more than pre-set current value, and in time control switch module disconnect, to avoid
In the case of unwitting, the safe digital storage card burnt is injected into lighting jig, causes the place of the lighting jig of display panel
The devices such as reason device are burnt.
Description of the drawings
Fig. 1 is the structure diagram of the lighting jig of a kind of display panel that the utility model embodiment provides；
Fig. 2 is the structure diagram of the lighting jig of another display panel that the utility model embodiment provides；
Fig. 3 is the structure diagram of the lighting jig of another display panel that the utility model embodiment provides；
Fig. 4 is the structure diagram of the lighting jig of another display panel that the utility model embodiment provides；
Fig. 5 is the structure diagram of the lighting jig of another display panel that the utility model embodiment provides.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model rather than the restriction to the utility model.It further needs exist for
It is bright, part relevant with the utility model rather than entire infrastructure are illustrated only for ease of description, in attached drawing.
The utility model embodiment provides a kind of lighting jig of display panel.Fig. 1 is provided for the utility model embodiment
A kind of display panel lighting jig structure diagram, as shown in Figure 1, the lighting jig of the display panel includes：Switch
Module 110, safe digital memory card slot 120, power supply 130, safe digital storage card 140, current detection circuit 150 and
Processor 160.
Wherein, for grafting safe digital storage card 140, (Fig. 1 illustratively draws peace to safe digital memory card slot 120
Full digital code storage card 140 does not inject the situation of safe digital memory card slot 120), safe digital memory card slot 120 is through switch
Module 110 is electrically connected with power supply 130, when safe digital storage card 140 does not inject safe digital memory card slot 120,
The electric current that power supply 130 flows into safe digital memory card slot 120 is zero；When safe digital storage card 140 injects safe number
During code memory card slot 120, power supply 130 can be that safe digital storage card 140 is powered.Current detection circuit 150 is electrically connected
It is connected between power supply 130 and switch module 110, for acquiring the electricity that power supply 130 flows into safe digital storage card 140
Stream.The first input end In1 of processor 160 is electrically connected with the output terminal Out1 of current detection circuit 150, the first output terminal Out2
It is electrically connected with the control terminal Ctrl1 of switch module 110, for being more than pre- when the electric current for monitoring the acquisition of current detection circuit 150
If during current value, control switch module 110 disconnects.Processor 160 is by controlling the first output terminal Out2 to export high level or low
Level controls the closure of switch module 110 and disconnection (i.e. conducting and shutdown).Safe digital storage card 140 is various for storing
The grey menu and pictorial information of test and the timing control information of various sizes of display panel.
If the safe digital storage card 140 is normal, safe digital storage card 140 is injected to the safe number of lighting jig
During code memory card slot 120, when powering on, current detection circuit 150 is collected to be flowed into safe digital by power supply 130 and deposits
The electric current of card storage 140, less than pre-set current value, processor 160 controls switch module 110 to be closed.If without knowing it,
The safe digital storage card 140 burnt (i.e. safe digital storage card is short-circuit) is injected into safe digital memory card slot 120
When, power supply 130 will generate rapidly high current, and the high current of generation will increase rapidly, more than pre-set current value, current detecting
Circuit 150, which collects, raised is flowed into the electric current of safe digital storage card 140 by power supply 130, and be transferred to processor
160.At this point, processor 160 will monitor that electric current is more than that pre-set current value control switch module 110 disconnects, so as to avoid burning
Other devices of the lighting jig of display panel.
Optionally, switch module 110 includes MOS transistor, triode or relay.
Optionally, as shown in Fig. 2, Fig. 2 is the lighting jig of another display panel that the utility model embodiment provides
Structure diagram, on the basis of above-described embodiment, switch module 110 include PMOS transistor, wherein, PMOS transistor
Grid is electrically connected with the control terminal Ctrl1 of switch module 110, and the source electrode of PMOS transistor is electrically connected with power supply 130；PMOS
The drain electrode of transistor is electrically connected with safe digital memory card slot 120.
Optionally, as shown in figure 3, Fig. 3 is the lighting jig of another display panel that the utility model embodiment provides
Structure diagram, on the basis of above-described embodiment, switch module 110 include PNP triode, wherein, the base of PNP triode
Pole is electrically connected with the control terminal Ctrl1 of switch module 110, and the emitter of PNP triode is electrically connected with power supply 130；PNP tri-
The collector of pole pipe is electrically connected with safe digital memory card slot 120.
Optionally, as shown in figure 4, Fig. 4 is the lighting jig of another display panel that the utility model embodiment provides
Structure diagram, on the basis of above-described embodiment, switch module 110 include the first relay, wherein, the first relay
The first end of coil 111 is electrically connected with the control terminal Ctrl1 of switch module 110, the second termination of the coil 111 of the first relay
Ground, the first end of the contact 112 of the first relay are electrically connected with power supply 130；The second end of the contact 112 of first relay
It is electrically connected with safe digital memory card slot 120.
Optionally, as shown in Fig. 2, on the basis of above-described embodiment, the second input terminal In2 of processor 160 can be with
It is electrically connected through safe digital memory card slot 120 with safe digital storage card 140, second output terminal Out3 and display surface to be tested
Plate 180 is electrically connected, for when safe digital storage card 140 is inserted into safe digital memory card slot 120, reading safe digital
The image data of 140 memory storage of storage card, and outputting data signals and scanning signal are to display panel to be tested, it is various to show
Test pictures.If the safe digital storage card 140 is normal, safe digital storage card 140 is injected to the safety of lighting jig
It (is deposited during digital memory card card slot 120 as shown in Fig. 2, Fig. 2 illustratively draws the reeve safe digital of safe digital storage card 140
The situation of card storage card slot 120), when powering on, current detection circuit 150 is collected to flow into safe digital by power supply 130
The electric current of storage card 140, less than pre-set current value, processor 160 controls switch module 110 to be closed, and processor 160, which will be read, pacifies
The image data of 140 memory storage of full digital code storage card, and export corresponding signal such as：Data-signal and scanning signal are shown to be tested
Show panel.If without knowing it, by the safe digital storage card 140 burnt, (i.e. safe digital storage card 140 is short
Road) when injecting safe digital memory card slot 120, power supply 130 will generate rapidly high current, and the high current of generation will be rapid
It increases to more than pre-set current value, current detection circuit 150 collects raised flows into safe digital storage by power supply 130
The electric current of card 140 is simultaneously transferred to processor 160.At this point, processor 160 will monitor that electric current is more than pre-set current value control switch
Module 110 disconnects, so as to avoid burning the devices such as the processor of the lighting jig of display panel.Optionally, power supply 130 is gone back
It can be electrically connected with processor 160, to power to processor 160.
Optionally, processor 160 is integrated with Serial Peripheral Interface (SPI), and processor 160 is through serial peripheral interface bus (Serial
Peripheral Interface, SPI) it is electrically connected with safe digital storage card 140.Safe digital storage card can support two kinds of readings
WriteMode, i.e. SD patterns and SPI mode.During using SD patterns, need to be attached with processor by SD card control unit interface；
During using SPI mode, need to be attached by SPI interface and processor.SPI be a kind of high speed, full duplex, synchronization it is logical
Believe bus, and general processor would generally be integrated with SPI interface, and (SD is additionally added in without integrating SD card control unit interface
Card controller interface can increase cost), therefore processor 160 is used through serial peripheral interface bus and safe digital storage card 140
Electrical connection can reduce hardware cost, simplify circuit design.
The utility model embodiment provides the lighting jig of another display panel.Fig. 5 is carried for the utility model embodiment
The structure diagram of the lighting jig of another display panel supplied, as shown in figure 5, on the basis of above-described embodiment, electric current
Detection circuit includes sampling resistor R1, operational amplifier 151 and analog-digital converter 152；Wherein, sampling resistor R1 and switch module
110 are connected in series；The first end and second end of sampling resistor R1 is defeated with the in-phase input end of operational amplifier 151 and reverse phase respectively
Enter end electrical connection, the output terminal of operational amplifier 151 is electrically connected with the input terminal of analog-digital converter 152, analog-digital converter 152
Output terminal is electrically connected with processor 160.
Wherein, operational amplifier 151 can be used for obtaining the voltage of sampling resistor R1, and export to analog-digital converter 152；Mould
Number converter 152 is used to the corresponding analog quantity of the voltage of sampling resistor R1 being converted to digital quantity, exports to processor 160.Place
Reason device 160 is additionally operable to the corresponding digital quantity of voltage according to sampling resistor R1, calculates the electric current for flowing through sampling resistor R1, i.e., by supplying
Power supply 130 flows into the electric current of safe digital storage card 140.
If the safe digital storage card 140 is normal, safe digital storage card 140 is injected to the safe number of lighting jig
During code memory card slot 120, when powering on, the electric current of safe digital storage card 140 is flowed by power supply 130, less than default
Current value, the voltage of sampling resistor R1 are less than preset voltage value, and processor 160 controls switch module 110 to be closed.If ignorant
In the case of, the safe digital storage card 140 burnt (i.e. safe digital storage card is short-circuit) is injected into safe digital storage
During card card slot 120, power supply 130 will generate rapidly high current, and the high current of generation will be increased rapidly to more than predetermined current
Value, the voltage of sampling resistor R1 increase with the increase of electric current, until more than preset voltage value, processor 160 is according to sampling electricity
The corresponding digital quantity of voltage of R1 is hindered, the electric current for flowing through sampling resistor R1 is calculated, i.e., safe digital is flowed by power supply 130 and deposited
The electric current of card storage 140, at this point, will monitor that electric current is more than that pre-set current value control switch module 110 disconnects, so as to avoid burning
Other devices of the lighting jig of display panel.
Optionally, analog-digital converter 152 is integrated in processor.
Optionally, with continued reference to Fig. 5, on the basis of above-described embodiment, the lighting jig of the display panel further includes report
Alert circuit 170, warning circuit 170 are electrically connected with the third output terminal Out4 of processor 160, and processor 160 is additionally operable to when monitoring
When the electric current acquired to current detection circuit is more than pre-set current value, warning circuit 170 is sent a control signal to, to prompt user
The SD card has been burnt.Optionally, warning circuit 170 includes following at least one：Light emitting diode and buzzer, to carry out acousto-optic
Alarm.
Optionally, on the basis of above-described embodiment, processor includes the first microcontroller and FPGA (Field-
Programmable Gate Array, field programmable gate array)；Wherein, the first microcontroller, through safe digital storage card
Card slot is electrically connected with safe digital storage card, is electrically connected with the output terminal of current detection circuit, the control terminal electricity with switch module
Connection, for when safe digital storage card is inserted into safe digital memory card slot, reading safe digital storage card memory storage
Image data；It is additionally operable to when monitoring that electric current is more than pre-set current value, then switch module be controlled to disconnect；Field-programmable gate array
Row, input terminal are electrically connected with the first microcontroller, and output terminal is electrically connected with display panel to be tested, for image data to be converted
Into data-signal and scanning signal, and export to display panel to be tested.Wherein, the first microcontroller can be ARM microprocessors
Device.
Note that it above are only the preferred embodiment of the utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious variation is readjusted, be combined with each other and is substituted without departing from the scope of protection of the utility model.Therefore, although passing through
Above example is described in further detail the utility model, but the utility model be not limited only to more than implement
Example in the case where not departing from the utility model design, can also include other more equivalent embodiments, and the utility model
Range is determined by scope of the appended claims.
Claims (10)
1. a kind of lighting jig of display panel, which is characterized in that including：
Switch module (110)；
Safe digital memory card slot (120), the safe digital memory card slot (120) is through the switch module (110) electricity
Power supply (130) is connected to, for grafting safe digital storage card (140)；
Current detection circuit (150), the current detection circuit (150) are electrically connected to the power supply (130) and are opened with described
Between closing module (110), for acquiring the electric current that the power supply (130) flows into the safe digital storage card (140)；
Processor (160) is electrically connected with the output terminal (Out1) of the current detection circuit (150), at the same with the switching molding
Control terminal (Ctrl1) electrical connection of block (110), for when monitoring that the electric current is more than pre-set current value, being opened described in control
Module (110) is closed to disconnect.
2. the lighting jig of display panel according to claim 1, which is characterized in that the switch module (110) includes
MOS transistor, triode or relay.
3. the lighting jig of display panel according to claim 2, which is characterized in that the switch module (110) includes
PMOS transistor, wherein, the grid of the PMOS transistor is electrically connected with the control terminal (Ctrl1) of the switch module (110),
The source electrode of the PMOS transistor is electrically connected with the power supply (130)；The drain electrode of the PMOS transistor and the safety
Digital memory card card slot (120) is electrically connected.
4. the lighting jig of display panel according to claim 2, which is characterized in that the switch module (110) includes
PNP triode, wherein, the base stage of the PNP triode is electrically connected with the control terminal (Ctrl1) of the switch module (110), institute
The emitter for stating PNP triode is electrically connected with the power supply (130)；The collector of the PNP triode and the safety
Digital memory card card slot (120) is electrically connected.
5. the lighting jig of display panel according to claim 2, which is characterized in that the switch module (110) includes
First relay, wherein, the first end of the coil (111) of first relay and the control terminal of the switch module (110)
(Ctrl1) it is electrically connected, the second end ground connection of the coil (111) of first relay, the contact (112) of first relay
First end be electrically connected with the power supply (130)；The second end of the contact (112) of first relay and the safety
Digital memory card card slot (120) is electrically connected.
6. the lighting jig of display panel according to claim 1, which is characterized in that the processor (160) is integrated with
Serial Peripheral Interface (SPI), the processor (160) are electrically connected through serial peripheral interface bus and the safe digital storage card (140)
It connects.
7. the lighting jig of display panel according to claim 1, which is characterized in that the current detection circuit includes adopting
Sample resistance (R1), operational amplifier (151) and analog-digital converter (152)；Wherein, the sampling resistor (R1) and the switching molding
Block (110) is connected in series；The first end and second end of the sampling resistor (R1) is same with the operational amplifier (151) respectively
Phase input terminal and inverting input electrical connection, output terminal and the analog-digital converter (152) of the operational amplifier (151)
Input terminal is electrically connected, and the output terminal of the analog-digital converter (152) is electrically connected with the processor (160).
8. the lighting jig of display panel according to claim 7, which is characterized in that analog-digital converter (152) collection
Into in the processor (160).
9. the lighting jig of display panel according to claim 1, which is characterized in that warning circuit (170) is further included, with
Processor (160) electrical connection, the processor (160) are additionally operable to when monitoring that the electric current is more than pre-set current value,
Send a control signal to the warning circuit (170).
10. the lighting jig of display panel according to claim 9, which is characterized in that the warning circuit (170) includes
Following at least one：Light emitting diode and buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721392896.8U CN207602192U (en) | 2017-10-26 | 2017-10-26 | A kind of lighting jig of display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721392896.8U CN207602192U (en) | 2017-10-26 | 2017-10-26 | A kind of lighting jig of display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207602192U true CN207602192U (en) | 2018-07-10 |
Family
ID=62756405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721392896.8U Active CN207602192U (en) | 2017-10-26 | 2017-10-26 | A kind of lighting jig of display panel |
Country Status (1)
| Country | Link |
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| CN (1) | CN207602192U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727585A (en) * | 2018-12-24 | 2019-05-07 | 惠科股份有限公司 | Display driving assembly and display device |
| CN109916595A (en) * | 2019-03-27 | 2019-06-21 | 京东方科技集团股份有限公司 | A kind of lighting jig and big visual angle optical testing device |
-
2017
- 2017-10-26 CN CN201721392896.8U patent/CN207602192U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109727585A (en) * | 2018-12-24 | 2019-05-07 | 惠科股份有限公司 | Display driving assembly and display device |
| CN109916595A (en) * | 2019-03-27 | 2019-06-21 | 京东方科技集团股份有限公司 | A kind of lighting jig and big visual angle optical testing device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215301 No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou Patentee after: InfoVision Optoelectronics(Kunshan)Co.,Ltd. Address before: 215301 No. 1, Longteng Road, Kunshan Development Zone, Jiangsu, Suzhou Patentee before: INFOVISION OPTOELECTRONICS (KUNSHAN) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |