CN201331640Y - Short circuit detection circuit for liquid crystal module - Google Patents
Short circuit detection circuit for liquid crystal module Download PDFInfo
- Publication number
- CN201331640Y CN201331640Y CNU2008201471168U CN200820147116U CN201331640Y CN 201331640 Y CN201331640 Y CN 201331640Y CN U2008201471168 U CNU2008201471168 U CN U2008201471168U CN 200820147116 U CN200820147116 U CN 200820147116U CN 201331640 Y CN201331640 Y CN 201331640Y
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- short
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- liquid crystal
- module
- circuit detecting
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Abstract
The utility model provides a short circuit detection circuit for a liquid crystal module. The short circuit detection circuit comprises a power supply unit and a plurality of short circuit detection units electrically connected with the power supply unit and having a warning function, and each short circuit detection unit is provided with a detection end connected with a module to be detected. The detection end of the detection circuit with a warning function is connected with the module to be detected to form a detection loop, so that if adjacent pins of the module to be detected are short-circuited, a warning signal occurs in the short circuit detection unit corresponding to the adjacent pins to inform working staff of short circuit information, and the working staff can know the accurate position of the short-circuited pins. Therefore, time-consuming and labor-consuming rework behavior caused by large-area connection disassembly and reconnection due to no knowledge of the position of the short-circuited pins is avoided, rework times caused by short circuits are effectively reduced, the production efficiency is increased, and the manufacturing cost is reduced.
Description
Technical field
The utility model relates to testing circuit, particularly the liquid crystal module short-circuit detecting circuit.
Background technology
The detection link of the liquid crystal module on the existing liquid crystal module production line is by liquid crystal module is connected with the image-driven unit, the image-driven unit is transferred to liquid crystal module with the image-driven signal, the liquid crystal module received signal also shows image, if can normally show then what show this liquid crystal module is normal, be certified products.If can not normally show, show that then this liquid crystal module is substandard products.For liquid crystal module that can be dissimilar in detecting link, on producing, all can use module adapter unit, switching selected cell.A big chunk reason that liquid crystal module can not normally show is to occur in the Liquid Crystal Module interface the contiguous pin phenomenon that is short-circuited in Liquid Crystal Module and mainboard connection procedure.
Liquid Crystal Module has golden finger to weld with the mainboard connected mode, ZIF is connected, BTB connects etc.Printed-wiring board (PWB) manufacture craft deficiency, the situations such as bad, failure welding, connector damage that overlay all may cause in the Liquid Crystal Module interface the contiguous pin phenomenon that is short-circuited.Especially in the process of welding, too much tin liquor causes the pin that liquid crystal module is contiguous to be electrically connected easily, forms the short circuit between the liquid crystal module pin.Short circuit between the liquid crystal module pin is common in process of production, whether we can only normally judge the whether short circuit of liquid crystal module according to display image to run into this situation, can not further judgement be to cause whole liquid crystal module short circuit by those pin short circuits.In this case, the technician can only separate earlier Liquid Crystal Module with mainboard, and then links together, and selects welding usually.The liquid crystal module of reformulating is passed through abovementioned steps again, if still occur showing abnormal words, splits again again and makes up.That is to say the circuit that lacks liquid crystal module short-circuit detecting in our the present liquid crystal module production, can not accurately know it is short-circuit conditions to occur between which pin on earth, can only large tracts of land remove connection, and then reconnect, till this liquid crystal module connects normally.The degree of doing over again like this is big, and length consuming time influences the speed of production and the quality of whole liquid crystal module, has increased the production cost of liquid crystal module.
The utility model content
In view of this, fundamental purpose of the present utility model is to provide a kind of simple and practical liquid crystal module short-circuit detecting circuit, can accurately determine the pin short-circuit state of liquid crystal module, reduce the workload when doing over again, reduce the number of times of doing over again, improve the production efficiency of liquid crystal module, reduce production costs.
A kind of liquid crystal module short-circuit detecting circuit comprises power supply unit, the short-circuit detecting unit of the plural number that is electrically connected with power supply unit with prompt facility, and described short-circuit detecting unit has the test side that is connected with module to be measured.
The test side of the testing circuit of liquid crystal module short-circuit detecting circuit of the present utility model by having prompt facility is connected with module to be measured, constitutes to detect the loop.If short circuit between the adjacent pin of module to be measured like this, then the corresponding short-circuit detecting of this adjacent leads unit just has cue, informs staff's short circuit information, makes it know the position of short circuit pin exactly.So can stop owing to know the position of short circuit pin large tracts of land to be removed and connect, and then reconnect the behavior of doing over again of this consuming time, consumption manpower.Effectively reduce because the number of times of doing over again that short circuit causes has improved production efficiency, reduced production cost.
Description of drawings
Fig. 1 is the liquid crystal module short-circuit detecting circuit structural representation of the utility model embodiment one;
Fig. 2 is the liquid crystal module short-circuit detecting circuit structural representation of the utility model embodiment two;
Fig. 3 is the liquid crystal module short-circuit detecting circuit structural representation of the utility model embodiment three;
Fig. 4 is short-circuit detecting unit and the power supply connection diagram of the utility model embodiment;
Fig. 5 is the testing circuit schematic diagram between pin 1 and the pin 2 among the utility model embodiment;
Fig. 6 is the power supply architecture synoptic diagram among the embodiment two of the present utility model;
Fig. 7 is the pin synoptic diagram of the testing sample among the utility model embodiment.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the utility model is elaborated.
With reference to Fig. 1, the short-circuit detecting unit 102 of the plural number with prompt facility that a kind of liquid crystal module short-circuit detecting circuit that proposes the utility model first embodiment comprises power supply unit 101, be electrically connected with power supply unit 101, described short-circuit detecting unit 102 has the test side that is connected with module 103 to be measured.
The test side of the short-circuit detecting circuit of present embodiment by having prompt facility is connected with module to be measured, and power supply unit 101, short-circuit detecting unit 102, module to be measured 103 constitute and detect loops like this.As if short-circuit conditions occurring between the adjacent pin of module to be measured, then the corresponding short-circuit detecting of this adjacent leads unit 102 just has cue, informs staff's short circuit information, makes it know the position of short circuit pin exactly.
With reference to Fig. 2, second embodiment of the present utility model is proposed, second embodiment is based on that first embodiment proposes.Present embodiment provides that a kind of liquid crystal module short-circuit detecting circuit comprises power supply unit 201, the short-circuit detecting unit 202 of the plural number with prompt facility that is electrically connected with power supply unit 201, the switching selected cell 203 that is electrically connected with the test side of short-circuit detecting unit 202, switching selected cell 203 has the function that is connected with module 204 to be measured.
Present embodiment has increased switching selected cell 203 on the basis of first embodiment, satisfied the detection of module to be measured of the different pin numbers of same type, makes the scope of application of the present utility model become wide.Reduce production costs.
With reference to Fig. 3, the 3rd embodiment of the present utility model is proposed, the 3rd embodiment proposes on second embodiment basis.Present embodiment provides that a kind of liquid crystal module short-circuit detecting circuit comprises power supply unit 301, the short-circuit detecting unit 302 of the plural number with prompt facility that is electrically connected with power supply unit 301, the switching selected cell 303 that is electrically connected with the test side of short-circuit detecting unit 302, with the module adapter unit 304 that switching selected cell 303 is connected, module adapter unit 304 has the function that is connected with module 305 to be measured.
Present embodiment has increased module adapter unit 304 on the basis of second embodiment, has satisfied the detection of the module to be measured of dissimilar different pin numbers, further makes the scope of application of the present utility model become wide.Reduce production costs.
The quantity of short-circuit detecting of the present utility model unit can be Integer N (N 〉=2).Because short-circuit detecting unit and its detection port are to concern one to one, so also can also indicate the relevant detection end with this numbering.The short-circuit detecting unit comprises signal indicating member and a plurality of test sides that indicate from 1 to N (N 〉=2) numbering, and connecting with the signal indicating member in the test side that is numbered odd number in the wherein said test side, is parallel-connected to the positive terminal or the negative pole end of power supply then; Also connecting with the signal indicating member in remaining test side, is parallel-connected to the negative pole end or the positive terminal of power supply then.
Fig. 4 is short-circuit detecting unit and the power supply connection diagram of the utility model embodiment, is wherein a kind of mode synoptic diagram that power supply is connected with the short-circuit detecting unit among the utility model first to the 3rd embodiment.Described signal indicating member is a light emitting diode.Have among the figure and be numbered 1 to 40 short-circuit detecting unit (or test side).The test side that is numbered odd number in the wherein said test side is connected with the negative pole end of light emitting diode, and the positive pole of light emitting diode is parallel-connected to the positive terminal of power supply then; Remaining test side is connected with the positive pole of light emitting diode, and the negative pole of light emitting diode is parallel-connected to the negative pole end of power supply then.
Further preferred:
The only different colours that light emitting diode sent in the described adjacent short-circuit detecting unit.Can point out very easily that like this which two pin is short circuits.
Further preferred:
The quantity N=60 of short-circuit detecting unit; This quantity satisfies the detection demand of the most of modules in producing, and it is idle too much detection port can not occur, is in rational cost control scope.
Now, the utility model is described in further detail for an embodiment.
Present embodiment is that to detect model by liquid crystal module short-circuit detecting circuit of the present utility model be the short-circuit conditions of the liquid crystal module of FPC4312P.Model be FPC4312P liquid crystal module the pin synoptic diagram as shown in Figure 7.
Power supply adopts AAT3215 type power supply in the present embodiment, and its circuit structure as shown in Figure 6.The exit VDD of AAT3215 is equivalent to the power positive end VDD among Fig. 4, and the positive electrical of the light emitting diode in the detecting unit at the vdd terminal of AAT3215 power supply and the place, test side that is numbered odd number is connected.The negative pole of this diode is connected with the test side; The negative pole that is numbered the light emitting diode in the detecting unit at place, test side of even number be electrically connected.The positive pole of this light emitting diode is connected with the test side.
The test side of detecting unit is electrically connected with the switching interface of switching selected cell correspondingly.The switching interface of switching selected cell also is connected one to one with the module adapter unit.Like this, when the pin of liquid crystal module to be measured is connected with the module adapter unit, with regard to being equivalent to its switching interface with the module adapter unit is connected, therefore, the pin of LCD module under test has just become the part of short-circuit detecting circuit.When between the adjacent pin of LCD module under test during short circuit, then with short-circuit detecting circuit that this pin is connected in light emitting diode just luminous.As shown in Figure 5, when between pin pin1, the pin2 of LCD module under test during short circuit, then pin1 and pin2 are electrically connected, just constituted electric pathway between VDD, LED 1, LED 2, pin1, the pin2, light emitting diode just has electric current to pass through, and LED 1, LED 2 is simultaneously luminous.The place that so just can know clearly short circuit is between liquid crystal module pin pin1 and the pin2.
If short circuit between other pins, the process of detection and principle are with recited above the same.Use the utility model just can be easily and judge the place, position of short circuit pin accurately like this.Need not be again the pin of whole liquid crystal module have been torn open and reconnected again, reduced production cost, reduced temporal consumption, improved the liquid crystal module speed of production on the streamline for short circuit between certain two pin wherein.
The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model instructions and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.
Claims (8)
1, a kind of liquid crystal module short-circuit detecting circuit is characterized in that comprising power supply unit, the short-circuit detecting unit of the plural number that is electrically connected with power supply unit with prompt facility, and described short-circuit detecting unit has the test side that is connected with module to be measured.
2, liquid crystal module short-circuit detecting circuit as claimed in claim 1, it is characterized in that also comprising with the test side of module to be measured and link to each other with the short-circuit detecting unit, provide selectable a plurality of switching interface, the switching selected cell that module pin to be measured can be linked to each other with the test side of described short-circuit detecting unit exactly; The switching interface of described switching selected cell is electrically connected correspondingly with the test side of short-circuit detecting unit.
3, liquid crystal module short-circuit detecting circuit as claimed in claim 2, it is characterized in that also comprising various differences module different connection form to be measured is converted into module adapter unit with the corresponding connected mode of described switching selected cell, the module adapter unit links to each other with module to be measured with the switching selected cell.
4, as each described liquid crystal module short-circuit detecting circuit of claim 1 to 3, it is characterized in that described short-circuit detecting unit comprises the signal indicating member, is composed of from a plurality of test sides of 1 to N numbering, described N 〉=2, connecting with the signal indicating member in the test side that is numbered odd number in the described test side, is parallel-connected to the positive terminal or the negative pole end of power supply then; Also connecting with the signal indicating member in remaining test side, is parallel-connected to the negative pole end or the positive terminal of power supply then.
5, liquid crystal module short-circuit detecting circuit as claimed in claim 4 is characterized in that described signal indicating member is a light emitting diode.
6, liquid crystal module short-circuit detecting circuit as claimed in claim 5, it is characterized in that being connected with positive source with the positive pole of the light emitting diode of the test side series connection that is numbered odd number, the negative pole of the light emitting diode of connecting with the test side that is numbered even number is connected with the negative pole end of power supply.
7, liquid crystal module short-circuit detecting circuit as claimed in claim 6 is characterized in that preferred N=60.
8, liquid crystal module short-circuit detecting circuit as claimed in claim 5 is characterized in that the only different colours that light emitting diode sent in the adjacent short-circuit detecting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201471168U CN201331640Y (en) | 2008-08-29 | 2008-08-29 | Short circuit detection circuit for liquid crystal module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201471168U CN201331640Y (en) | 2008-08-29 | 2008-08-29 | Short circuit detection circuit for liquid crystal module |
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| Publication Number | Publication Date |
|---|---|
| CN201331640Y true CN201331640Y (en) | 2009-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201471168U Expired - Lifetime CN201331640Y (en) | 2008-08-29 | 2008-08-29 | Short circuit detection circuit for liquid crystal module |
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| CN (1) | CN201331640Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023271A (en) * | 2010-11-25 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for verifying automatic switching modes of high voltage side buscouple switch |
| CN102095951A (en) * | 2010-11-25 | 2011-06-15 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for checking automatic switching mode of low-pressure side section switch |
| CN103487736A (en) * | 2013-09-18 | 2014-01-01 | 大唐移动通信设备有限公司 | Method and device for detecting TVS pipe |
| CN106771980A (en) * | 2017-01-16 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of flexible circuit board detecting device and detection method |
| CN107316597A (en) * | 2017-08-11 | 2017-11-03 | 深圳同兴达科技股份有限公司 | A kind of liquid crystal display module open circuit short circuit detecting system |
| CN107329291A (en) * | 2017-08-11 | 2017-11-07 | 深圳同兴达科技股份有限公司 | A kind of liquid crystal display module efficient detection system |
| CN108510923A (en) * | 2018-03-30 | 2018-09-07 | 武汉精立电子技术有限公司 | A kind of detection liquid crystal module ID pins open the device of short circuit |
-
2008
- 2008-08-29 CN CNU2008201471168U patent/CN201331640Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023271A (en) * | 2010-11-25 | 2011-04-20 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for verifying automatic switching modes of high voltage side buscouple switch |
| CN102095951A (en) * | 2010-11-25 | 2011-06-15 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for checking automatic switching mode of low-pressure side section switch |
| CN102023271B (en) * | 2010-11-25 | 2012-11-28 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for verifying automatic switching modes of high voltage side buscouple switch |
| CN102095951B (en) * | 2010-11-25 | 2013-03-13 | 河南省电力公司洛阳供电公司 | Spare power automatic switching logic test method for checking automatic switching mode of low-pressure side section switch |
| CN103487736A (en) * | 2013-09-18 | 2014-01-01 | 大唐移动通信设备有限公司 | Method and device for detecting TVS pipe |
| CN103487736B (en) * | 2013-09-18 | 2015-10-14 | 大唐移动通信设备有限公司 | A kind of method and device detecting TVS pipe |
| CN106771980A (en) * | 2017-01-16 | 2017-05-31 | 京东方科技集团股份有限公司 | A kind of flexible circuit board detecting device and detection method |
| CN107316597A (en) * | 2017-08-11 | 2017-11-03 | 深圳同兴达科技股份有限公司 | A kind of liquid crystal display module open circuit short circuit detecting system |
| CN107329291A (en) * | 2017-08-11 | 2017-11-07 | 深圳同兴达科技股份有限公司 | A kind of liquid crystal display module efficient detection system |
| CN108510923A (en) * | 2018-03-30 | 2018-09-07 | 武汉精立电子技术有限公司 | A kind of detection liquid crystal module ID pins open the device of short circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN BYD ELECTRONIC COMPONENT CO., LTD. Free format text: FORMER OWNER: BIYADI CO., LTD. Effective date: 20150901 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150901 Address after: 518119 Guangdong province Shenzhen City Dapeng new Kwai town Yanan Road No. 1 building experimental Byd Co Patentee after: Shenzhen BYD Electronic Component Co., Ltd. Address before: Longgang District of Shenzhen City, Guangdong province 518118 Ping Wang Ping Road No. 3001 Patentee before: Biyadi Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |