CN207336573U - A kind of mainboard built-up circuit and test device for being used to shield functional test - Google Patents
A kind of mainboard built-up circuit and test device for being used to shield functional test Download PDFInfo
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- CN207336573U CN207336573U CN201720752649.8U CN201720752649U CN207336573U CN 207336573 U CN207336573 U CN 207336573U CN 201720752649 U CN201720752649 U CN 201720752649U CN 207336573 U CN207336573 U CN 207336573U
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Abstract
Technical field of measurement and test is the utility model is related to, more particularly to a kind of mainboard built-up circuit and test device for being used to shield functional test.Mainboard built-up circuit for shielding functional test includes：First connector, the second connector, on-off circuit and selection signal generative circuit；The signal connection end of first connector and the signal connection end of second connector connect one to one；The input terminal of the on-off circuit is electrically connected with the power port of first connector, the output terminal of the on-off circuit is electrically connected with the power port of second connector, and the selection end of the on-off circuit is connected with the output terminal of the selection signal generative circuit；First connector is used to be connected with mainboard, and second connector is used to be inserted into screen to be tested.The utility model lies in that providing it is used to shield the mainboard built-up circuit and test device of functional test so that will not have impact on the normal work of mainboard chip by power port because of false touch when screen to be tested is connected with mainboard.
Description
Technical field
The utility model is related to technical field of measurement and test, more particularly to a kind of mainboard built-up circuit for being used to shield functional test and
Test device.
Background technology
With science and technology progress and the division of labor among enterprises it is increasingly fine and closely woven, specially produce the company of a certain product before dispatching from the factory
Its product will be tested, for the producer for producing screen, needs the display to its screen and touch function to carry out before dispatching from the factory
Test.
Inventor has found that at least there are the following problems in the prior art：When being verified to single screen, it is necessary to complete to shield
Display and touch function test, with ensure screen function can realize.It is big in order to be rapidly completed when doing this test
The test job of the screen of batch, the mainboard for test panel are constantly in the state of live line work, i.e., exactly one piece to be tested
Screen directly separates after completing test with testing host, then directly verifies next piece of screen to be tested, when screen and mainboard to be tested
Connector connection when, can because the port that main on board supply line be encountered in the signal wire port of screen causes motherboard power supply short-circuit by mistake,
So that mainboard chip cisco unity malfunction, adds production cost, if testing host is not constantly in live line work
State, then testing the time used can increase, and cause work efficiency to reduce.
Utility model content
The purpose of this utility model is to provide a kind of mainboard built-up circuit and test device for being used to shield functional test, use
So that when screen to be tested is connected with mainboard, the normal work of mainboard chip will not be influenced by power port because of false touch.
In order to solve the above technical problems, the embodiment of the utility model provides a kind of mainboard for being used to shield functional test
Built-up circuit, including：First connector, the second connector, on-off circuit and selection signal generative circuit；
The signal connection end in addition to power port of first connector removes power end with second connector
Signal connection end outside mouthful connects one to one；
The input terminal of the on-off circuit is electrically connected with the power port of first connector, the on-off circuit it is defeated
Outlet is electrically connected with the power port of second connector, selection end and the selection signal generation electricity of the on-off circuit
The output terminal connection on road；
First connector is used to be connected with mainboard, and second connector is used to be inserted into screen to be tested；
After the screen to be tested is inserted into second connector, output is used to control the selection signal generative circuit
The first control signal of the on-off circuit conducting；The selection signal generative circuit extracts described the in the screen to be tested
After two connectors, output is used for the second control signal for controlling the on-off circuit shut-off.
Embodiments of the present invention additionally provide a kind of test device for being used to shield functional test, including the utility model reality
The mainboard built-up circuit for being used to shield functional test that example is provided is applied, further includes mainboard；
First connector of the mainboard built-up circuit is connected with the mainboard.
In terms of existing technologies, the first connector is used to be connected with mainboard the utility model embodiment, to ensure
Mainboard live line work, so as not to influence work efficiency, there is provided on-off circuit mainly ensure the second connector with it is to be tested
It is not charged during screen connection, and ensure that screen accesses power supply after being correctly inserted into the second connector.The embodiment effectively avoids
The problem of signal end false touch power end influences mainboard chip during screen insertion connector to be tested, and motherboard circuit is always
In live line work state, by the turn-on and turn-off of the effective controlling switch circuit of selection signal generative circuit, mainboard is protected
Chip, and ensure that mainboard chip can work normally and not influence work efficiency, circuit structure is simple, is easy to apply.
In addition, in this is used to shield the mainboard built-up circuit of functional test, the selection signal generative circuit includes：Resistance
Element and switch element；
The selection end of the on-off circuit respectively with the first connecting pin of the resistive element and the switch element
One connecting pin connects, and the second connection end of the switch element is connected with any road output port of power source of the on-off circuit,
The second connection end ground connection of the resistive element；Wherein, it is connected in the on-off circuit, with the switch element second connection end
The power output end of on-off circuit, is connected to the power end of first connector.
In the embodiment, selection signal generative circuit is mainly the power supply signal for controlling the second connector, ensures second
Connector is correctly connected to after screen to be tested, and the output of selection signal generative circuit is used for the first control of on-off circuit conducting
Signal, the second connector access power supply signal, is shielding after the extraction of the second connector, the output of selection signal generative circuit is used to open
The second control signal of powered-down road shut-off, on-off circuit turn off, and can effectively avoid the signal end false touch power supply of screen to be tested
The problem of holding and damaging mainboard chip, by setting switch element effectively to control power supply signal, while resistive element and switch
The selection end connection energy protective efficient switch circuit of circuit, avoids the excessive damage switch element of electric current in circuit.
In addition, be used to shield the mainboard built-up circuit of functional test at this, first connector is included at least all the way
Power port, second connector include power port at least all the way；Wherein, the power port number of first connector
Power port quantity of the amount no less than second connector.In the embodiment, screen to be tested is connected with the second connector,
The quantity of power port included by the screen to be tested of different size may also be different, and multiple power supplys are set in the second connector
Port ensures that screen to be tested can be connected correctly to the second connector, and can pass through to adapt to the screen to be tested of different size
The mainboard built-up circuit is connected to mainboard and carries out normal test job.
In addition, be used to shield the mainboard built-up circuit of functional test at this, the screen to be tested is correctly inserted into described the
After two connectors, the switch element closure, the selection end input high level signal of the on-off circuit, the on-off circuit is led
It is logical；
After the screen to be tested extracts second connector, the switch element shut-off, the choosing of the on-off circuit
End input low level is selected, the on-off circuit disconnects.
In addition, in this is used to shield the mainboard built-up circuit of functional test, the on-off circuit includes variable connector；It is each
The control terminal switched described in road is connected with the selection end of the on-off circuit；Arbitrarily opened all the way described in the variable connector control
The break-make of the corresponding all the way input terminal and output terminal on powered-down road；
When the selection end of the on-off circuit, for high level, then the variable connector closes, when the selection of the on-off circuit
Hold as the low level then variable connector shut-off.
In the embodiment, screen to be tested has the power port of more than one end, then each power port is all connected to master
Plate, need to coordinate the power port quantity of the first connector and the second connector, then on-off circuit has more than switch all the way, can protect
Demonstrate,proving the power port of screen to be tested can accurately access in the testing host built-up circuit.
Brief description of the drawings
One or more embodiments are illustrative by the picture in corresponding attached drawing, these exemplary theorys
The bright restriction not formed to embodiment, the element for having same reference numbers label in attached drawing are expressed as similar element, remove
Non- have a special statement, and composition does not limit the figure in attached drawing.
Fig. 1 is the mainboard built-up circuit for being used to shield functional test in first embodiment in the utility model；
Fig. 2 a are the specific implementation circuit diagrams of on-off circuit in first embodiment in the utility model；
Fig. 2 b are a specific on-off circuit connection figures in first embodiment in the utility model；
Fig. 3 is a specific on-off circuit connection figure in first embodiment in the utility model；
Fig. 4 is a specific on-off circuit connection figure in first embodiment in the utility model；
Fig. 5 is the mainboard built-up circuit for being used to shield functional test in second embodiment in the utility model；
Fig. 6 is the test device for being used to shield functional test in the 3rd embodiment in the utility model.
Embodiment
It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer
Each embodiment of type is explained in detail.It is however, it will be understood by those skilled in the art that each in the utility model
In embodiment, many ins and outs are proposed in order to make reader more fully understand the application.But even if without these skills
Art details and many variations based on following embodiment and modification, can also realize that each claim of the application is required and protect
The technical solution of shield.
The first embodiment of the utility model is related to a kind of mainboard built-up circuit for being used to shield functional test.Such as Fig. 1 institutes
Show, including：First connector 101, the second connector 102, on-off circuit 103 (the selection end of SEL expressions on-off circuit in figure)
With selection signal generative circuit 104.It should be noted that the quantity and output terminal of the input terminal of on-off circuit shown in Fig. 1
Quantity be only signal, the particular number for being not offered as the input terminal of on-off circuit is 3, does not also indicate that the specific number of output terminal
Measure as 3, the quantity of the input terminal of on-off circuit can be Arbitrary Digit, and input terminal is identical with the quantity of output terminal.
Wherein, the signal connection end in addition to power port of the first connector 101 and the second connector 102 remove power supply
Signal connection end outside port connects one to one；The power port of the input terminal of on-off circuit 103 and the first connector electricity
Connection, the output terminal of on-off circuit 103 is electrically connected with the power port of the second connector 102, the selection end of on-off circuit 103 and
The output terminal connection of selection signal generative circuit 104；First connector 101 is used to be connected with mainboard, and the second connector 102 is used for
It is inserted into screen to be tested；After screen to be tested is inserted into the second connector 102, output is used to control selection signal generative circuit 104
Make the first control signal that the on-off circuit 103 turns on；Selection signal generative circuit 104 extracts described the in screen to be tested
After two connectors 102, output is used for the second control signal that controlling switch circuit 103 turns off.
Specifically, the first connector 101 includes power port at least all the way, the second connector 102 is included at least all the way
Power port；Wherein, the power port quantity of the first connector 101 is no less than the power port quantity of the second connector 102.
In a concrete implementation, the first connector 101 is connected with mainboard, and the second connector 102 is connected with screen to be tested, to be measured
The screen of examination has more than power port all the way, then the first connector 101 and the second connector 102 have more than power end all the way
Mouthful, the power port quantity of screen to be tested could be coordinated to test screen.
Specifically, the input terminal of on-off circuit 103 includes power input at least all the way, the output of on-off circuit 103
End includes power output end at least all the way；Wherein, the output port of power source quantity of on-off circuit 103 is no less than the second connector
102 power port quantity.At one in the specific implementation, ensureing that the power end of screen to be tested can be accessed accurately in circuit,
Port number then is set no less than the power port quantity of the second connector 102 in the power output end of on-off circuit 103.
In terms of existing technologies, in present embodiment, the first connector is connected on mainboard, and the second connector is used for
It is connected with screen to be tested, the first control of selection signal generative circuit output after screen to be tested is correctly inserted into the second connector
Signal, on-off circuit enter conducting state according to first control signal.During screen to be tested is inserted into the second connector,
On-off circuit is off state, if screen signal end false touch to be tested power end does not interfere with the normal work of mainboard chip
Make, in practice, in order to ensure work efficiency, mainboard is constantly in the state of live line work, is closed so as to avoid continuous
The problem of disconnected and conducting motherboard circuit influences work efficiency.In present embodiment, on-off circuit is set not interfere with the band of mainboard
Electric working status, the turn-on and turn-off of selection signal generating circuit controls on-off circuit, that is, avoid continuous turn-on and turn-off
Motherboard circuit influences the problem of test job, it also avoid master caused by the false touch of screen to be tested when being inserted into the second connector
The problem of board chip damages, and present embodiment circuit structure is simple, is easy to apply.
One based on first embodiment is in the specific implementation, on-off circuit 103 includes variable connector；Each way switch
Control terminal is connected with the selection end of on-off circuit 103；Arbitrarily variable connector controlling switch circuit 103 all the way is corresponding all the way
Input terminal and output terminal break-make；When the selection end of on-off circuit 103, for high level, then variable connector closes, and works as on-off circuit
For low level, then variable connector turns off at 103 selection end.
Specifically, on-off circuit 103 is analog switching circuit or digital switch circuit, then switch element is triode, door
Circuit etc.；
In a concrete implementation, on-off circuit 103 be multichannel analog switching circuit, switch element for diode,
Triode, field-effect tube etc., as shown in Figure 2 a, switch element is analog switch physical component in figure, can be diode, three poles
Pipe or field-effect tube, in one implementation, by taking field-effect tube as an example, as shown in Figure 2 b, in connection relation between grid and source electrode
Add positive phase voltage, in the high level signal input switching circuit of selection signal generative circuit, then switching elements conductive, the first connection
Conducting is connected between device and the second connector.Herein by way of example only, unlimited analog switch in this present embodiment in practice
Element.
In a concrete implementation, on-off circuit 103 is digital switch circuit, as shown in figure 3, switch element is and door
Switch element, it is when selecting signal generating circuit to send the control signal of high level, then in the conduction state with door, be only herein
For example, the switch element with door as digital switch circuit is not limited in practice, as long as qualified digital switch
Element can be used as switch element to be applied in circuit.
In a concrete implementation, switch element is single-pole single-throw switch (SPST) element, and in Fig. 4, control signal acts on
Each switch element, controls its turn-on and turn-off, is only that schematically illustrate specific connection relation is subject to reality in figure.It is only herein
For example, not limited to this switch element in practice.
The second embodiment of the utility model is related to a kind of mainboard built-up circuit for being used to shield functional test.Second implements
Mode is roughly the same with first embodiment, is in place of the main distinction：In the first embodiment, selection signal generative circuit
104 are represented in the form of circuit module.And in the utility model second embodiment, give a kind of specific selection signal
Generative circuit 104.In addition, the it will be understood by those skilled in the art that function of selection signal generative circuit 104.
The embodiment circuit connect as shown in figure 5, including：First connector 101, the second connector 102, on-off circuit
103 and each circuit devcie connection relation it is constant, wherein, selection signal generative circuit 104 includes：Resistive element R and switch member
Part S1；
The selection end SEL (the selection end of SEL expressions on-off circuit in figure) of on-off circuit 103 is respectively with resistive element R's
First connecting pin is connected with the first connecting pin of switch element S1, second connection end and the on-off circuit 103 of switch element S1
Any road output port of power source connection, the second connection end ground connection of resistive element R；
Wherein, the power supply for on-off circuit 103 being connected in on-off circuit 103, with switch element S1 second connection ends is defeated
Outlet, switch element S1 second connection ends are connected to the power end of the first connector 101.
Specifically, in the circuit of connection in such as Fig. 5, after screen to be tested is properly inserted into the second connector, close
Combination switch element S1, selection signal generative circuit output high level, on-off circuit 103 turn on, and can carry out work(to screen to be tested
Can test；When screen to be tested is not connected to the second connector, switch element S1, the output of selection signal generative circuit are disconnected
Low level, on-off circuit 103 turns off, at this time without test job.
In a specific embodiment, switch element S1 includes manual switch element or automatic switch element.Specifically
, manual switch can be the switch element of single-pole single-throw(SPST, and automatic switch element can be according to the change of low and high level for diode etc.
Change the element of control turn-on and turn-off.Herein by way of example only, it is not limited to the switch element that the above embodiment is mentioned.
The 3rd embodiment of the utility model is related to a kind of test device for being used to shield functional test, as shown in fig. 6, bag
Contain：The mainboard built-up circuit 601 and mainboard 602 that are used to shield functional test that the above embodiment is mentioned.
Wherein, the first connector of mainboard built-up circuit is connected with mainboard.
In a specific embodiment, the first connector 101 is identical with the connector on mainboard 602, the second connection
Device 102 is identical with the connector on screen to be tested, for being inserted into testing host, when carrying out the test of screen function, and selection letter
Number generative circuit output high level, on-off circuit closure, screen can be tested normally, incorrect shielding in the embodiment
When being connected to testing host, on-off circuit is off state, not charged on the power port of the second connector, avoids to be measured
The wafer damage problem that the signal end false touch testing host power end of examination screen occurs, meets design requirement.
Present embodiment is can be with first with first or the corresponding system embodiment of second embodiment, present embodiment
Or second embodiment is worked in coordination implementation.First or second embodiment in the relevant technical details mentioned in present embodiment
In still effectively, in order to reduce repetition, which is not described herein again.Correspondingly, the relevant technical details mentioned in present embodiment
It can be applicable in first or second embodiment.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific implementation of the utility model
Example, and in practical applications, can to it, various changes can be made in the form and details, without departing from the spirit of the utility model
And scope.
Claims (8)
- A kind of 1. mainboard built-up circuit for being used to shield functional test, it is characterised in that including：First connector, the second connector, On-off circuit and selection signal generative circuit；The signal connection end in addition to power port of first connector and second connector except power port it Outer signal connection end connects one to one；The input terminal of the on-off circuit is electrically connected with the power port of first connector, the output terminal of the on-off circuit It is electrically connected with the power port of second connector, selection end and the selection signal generative circuit of the on-off circuit Output terminal connects；First connector is used to be connected with mainboard, and second connector is used to be inserted into screen to be tested；After the screen to be tested is inserted into second connector, output is used to control described the selection signal generative circuit The first control signal of on-off circuit conducting；The selection signal generative circuit is extracted described second in the screen to be tested and is connected After connecing device, output is used for the second control signal for controlling the on-off circuit shut-off.
- 2. the mainboard built-up circuit according to claim 1 for being used to shield functional test, it is characterised in that the selection signal Generative circuit includes：Resistive element and switch element；The selection end of the on-off circuit connects with the first connecting pin of the resistive element and the first of the switch element respectively End connection is connect, the second connection end of the switch element is connected with any road output port of power source of the on-off circuit, described The second connection end ground connection of resistive element；Wherein, the power output end in the on-off circuit, with the switch element second connection end connecting valve circuit, connection In the power end of first connector.
- 3. the mainboard built-up circuit according to claim 1 for being used to shield functional test, it is characterised in that first connection Device includes power port at least all the way, and second connector includes power port at least all the way；Wherein, the power port quantity of first connector is no less than the power port quantity of second connector.
- 4. the mainboard built-up circuit according to claim 2 for being used to shield functional test, it is characterised in that described to be tested After screen is correctly inserted into second connector, the switch element closure, the selection end input high level letter of the on-off circuit Number, the on-off circuit conducting；After the screen to be tested extracts second connector, the switch element shut-off, the selection end of the on-off circuit Input low level, the on-off circuit disconnect.
- 5. the mainboard built-up circuit according to any one of claims 1 to 4 for being used to shield functional test, it is characterised in that institute Stating the input terminal of on-off circuit includes power input at least all the way, and the output terminal of the on-off circuit is included at least all the way Power output end；Wherein, the output port of power source quantity of the on-off circuit is no less than the power port quantity of second connector.
- 6. the mainboard built-up circuit according to claim 5 for being used to shield functional test, it is characterised in that the on-off circuit Including variable connector；Control terminal per switch described all the way is connected with the selection end of the on-off circuit；Any variable connector described all the way controls the break-make of the corresponding all the way input terminal and output terminal of the on-off circuit；When the selection end of the on-off circuit is high level then variable connector closure, when the on-off circuit selection end for The low level then variable connector shut-off.
- 7. the mainboard built-up circuit according to claim 1 for being used to shield functional test, it is characterised in that the switch element Including manual switch element or automatic switch element.
- 8. a kind of be used to shield the test device of functional test, it is characterised in that shields work(including being used for described in claim 1 to 7 The mainboard built-up circuit that can be tested, further includes mainboard；First connector of the mainboard built-up circuit is connected with the mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720752649.8U CN207336573U (en) | 2017-06-26 | 2017-06-26 | A kind of mainboard built-up circuit and test device for being used to shield functional test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720752649.8U CN207336573U (en) | 2017-06-26 | 2017-06-26 | A kind of mainboard built-up circuit and test device for being used to shield functional test |
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| Publication Number | Publication Date |
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| CN207336573U true CN207336573U (en) | 2018-05-08 |
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ID=62426807
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| CN201720752649.8U Active CN207336573U (en) | 2017-06-26 | 2017-06-26 | A kind of mainboard built-up circuit and test device for being used to shield functional test |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240370A (en) * | 2017-08-02 | 2017-10-10 | 长沙市宇顺显示技术有限公司 | A kind of display screen test device and method of testing |
| CN111131588A (en) * | 2019-12-30 | 2020-05-08 | 上海闻泰电子科技有限公司 | Testing device |
| CN111367258A (en) * | 2020-03-09 | 2020-07-03 | 上海柏楚数控科技有限公司 | Test mainboard and test system for automatic test of motion control card |
| WO2024182966A1 (en) * | 2023-03-06 | 2024-09-12 | 京东方科技集团股份有限公司 | Screen detection apparatus |
-
2017
- 2017-06-26 CN CN201720752649.8U patent/CN207336573U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107240370A (en) * | 2017-08-02 | 2017-10-10 | 长沙市宇顺显示技术有限公司 | A kind of display screen test device and method of testing |
| CN111131588A (en) * | 2019-12-30 | 2020-05-08 | 上海闻泰电子科技有限公司 | Testing device |
| CN111367258A (en) * | 2020-03-09 | 2020-07-03 | 上海柏楚数控科技有限公司 | Test mainboard and test system for automatic test of motion control card |
| CN111367258B (en) * | 2020-03-09 | 2021-05-14 | 上海柏楚数控科技有限公司 | Test mainboard and test system for automatic test of motion control card |
| WO2024182966A1 (en) * | 2023-03-06 | 2024-09-12 | 京东方科技集团股份有限公司 | Screen detection apparatus |
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Effective date of registration: 20200116 Address after: 314499 Room 101, workshop 20, Shidai Road, Haining Economic Development Zone, Haining City, Jiaxing City, Zhejiang Province Patentee after: Zhejiang everything workshop Intelligent Technology Co., Ltd Address before: 330000 Jiangxi city of Nanchang province Nanchang airport Confucian Music Lake Street No. 399 Patentee before: Nanchang and Germany Communications Technology Co., Ltd. |
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