CN106291187A - The electrostatic discharge detection device of a kind of display device and detection method - Google Patents
The electrostatic discharge detection device of a kind of display device and detection method Download PDFInfo
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- CN106291187A CN106291187A CN201610656889.8A CN201610656889A CN106291187A CN 106291187 A CN106291187 A CN 106291187A CN 201610656889 A CN201610656889 A CN 201610656889A CN 106291187 A CN106291187 A CN 106291187A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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Abstract
The present invention provides electrostatic discharge detection device and the detection method of a kind of display device, belongs to Display Technique field, and its static discharge process that can solve existing detection liquid crystal indicator is loaded down with trivial details, the inaccurate problem of test result.In the electrostatic discharge detection device of the display device of the present invention, displacement module is connected with discharge module, described discharge module moves the position to be detected to display device, can accurately control test position.Image processing module gathers the image that display device to be detected shows, it is judged that the image that display device to be detected shows is the most normal, it is judged that objective, accurate；Save manual operation, also facilitate and bad product is carried out data analysis.The electrostatic discharge detection device of the display device of the present invention is applicable to detect various liquid crystal indicator.
Description
Technical field
The invention belongs to Display Technique field, be specifically related to electrostatic discharge detection device and the detection side of a kind of display device
Method.
Background technology
Static discharge (Electro-Static discharge, ESD) refers to that the object with different electrostatic potential is mutual
Near or directly contact the electric charge that causes and shift.Static discharge right and wrong are usually shown in the phenomenon also being difficult to avoid.
Liquid crystal indicator, in producing and using, is easily subject to exceed the static discharge punching of self components and parts ability to bear
Hit, and when product cannot dissipate or discharge electric charge, cause the component failure that part anti-ESD threshold value is low.Therefore, static discharge meeting
Causing liquid crystal indicator yield to reduce, cost increases, and production capacity declines, therefore needs to carry out ESD test in display device produces,
To guarantee that display device will not cause the system failure because of ESD.
Inventor finds that in prior art, at least there are the following problems: the ESD of detection liquid crystal indicator is mainly at present
Manually detect, owing to this test process is comparatively laborious, taken time and effort, during atmospherical discharges, the rifle head of detection and display
It is not very accurate that the distance of device is manually held, and test result can be caused inaccurate.
Summary of the invention
The ESD process that the present invention is directed to existing detection liquid crystal indicator is loaded down with trivial details, the inaccurate problem of test result, carries
Electrostatic discharge detection device and detection method for a kind of display device.
Solve the technology of the present invention problem be the technical scheme is that
A kind of electrostatic discharge detection device of display device, including:
Discharge module；For the first voltage is discharged in the position to be detected of display device；
Displacement module；Described displacement module is connected with described discharge module, for moving described discharge module to display
The position to be detected of device；
Image processing module；For gathering the image that described display device to be detected shows；
Conductive module, the first voltage of the position described to be detected for being discharged by discharge module is derived；
Control module, described control module is connected with displacement module, image processing module, conductive module, for control bit
Shifting formwork block, image processing module, conductive module run.
Preferably, described image processing module includes pre-memory cell, is used for the normal picture that prestores；Described image procossing mould
The image that the display device described to be detected gathered is shown by block contrasts with described normal picture, and judges display device to be detected
The image of display is the most normal.
Preferably, described conductive module includes static bruss.
Preferably, described detection device also includes logging modle, and described logging modle is with described image processing module even
Connect, position to be detected corresponding when the image that shows of display device to be detected for being judged by image processing module is abnormal
Carry out record.
The present invention also provides for the static discharge detection method of a kind of display device, comprises the following steps:
S1, under the control of control module, discharge module is moved a location to be checked to display device by displacement module
Put；
The first voltage is discharged in described position to be detected by S2, discharge module；
S3, image processing module gather the image that display device to be detected shows, and judge that display device to be detected shows
Image the most normal；If there is the exception that cannot recover, then detection of end in display device to be detected；If display device to be detected
The image of display is normal, or, there is the exception that can recover in display device to be detected, then carry out next step；
First voltage of described position to be detected is derived by S4, conductive module；
S5, repetition step S2-S4 3-10 time；
Discharge module is moved to another position to be detected by S6, displacement module, repeats step S2-S5 until complete and owns
The detection of position to be detected；
S7, change first magnitude of voltage repeat step S1-S6.
Preferably, the step of the normal picture prestored to image processing module is also included；Judge to be checked described in step S3
The image that survey display device shows is the most normally the image and the image procossing display device to be detected of described collection shown
The normal picture contrast that module prestores, and judge that the image that display device to be detected shows is the most normal.
Preferably, also include that image that the display device to be detected that image processing module is judged by logging modle shows is not
Position to be detected corresponding time normal carries out the step recorded.
Preferably, step S3 also includes judging that image that display device to be detected shows is normal or the step of exception level
Suddenly, the method for described judgement is: if the image that display device to be detected shows is normal, be then judged to that A level is normal；If it is to be detected aobvious
Showing device occurs abnormal, but can automatically recover, then be judged to that B level is abnormal；If display device to be detected occurs abnormal, it is impossible to from
Dynamic recovery, needs manually recover or restart recovery, then be judged to that C level is abnormal；If display device to be detected occurs abnormal, automatically or
Manually or restart and all cannot recover, it is determined that abnormal for D level.
Preferably, discharge the first voltage described in step S2 and include any one in contact discharge, atmospherical discharges.
Preferably, described contact discharge range of voltage values is 0～± 12kV；Described atmospherical discharges range of voltage values is 0
～± 18kV.
In the electrostatic discharge detection device of the display device of the present invention, displacement module is connected with discharge module, puts described
Electricity module moves the position to be detected to display device, can accurately control test position.Image processing module gathers to be detected
The image that display device shows, it is judged that the image that display device to be detected shows is the most normal, it is judged that objective, accurate；Save people
Work operates, and also facilitates and bad product is carried out data analysis.The electrostatic discharge detection device of the display device of the present invention is applicable to
Detect various liquid crystal indicator.
Accompanying drawing explanation
Fig. 1 is the structural representation of the electrostatic discharge detection device of the display device of embodiments of the invention 1；
Fig. 2 is the structural representation of the electrostatic discharge detection device of the display device of embodiments of the invention 2；
Fig. 3 is the schematic flow sheet of the static discharge detection method of the display device of embodiments of the invention 3；
Fig. 4 is the static discharge position view of the display device of embodiments of the invention 3；
Wherein, reference is: 10, display device；11, chip；12, flexible circuit board；1, discharge module；2, displacement mould
Block；3, image processing module；4, conductive module；5, control module；6, logging modle.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, below in conjunction with the accompanying drawings and specific embodiment party
The present invention is described in further detail by formula.
Embodiment 1:
The present embodiment provide a kind of display device 10 electrostatic discharge detection device, as it is shown in figure 1, include discharge module 1,
Displacement module 2, image processing module 3, conductive module 4 and control module 5.
Wherein, discharge module 1 is for discharging the first voltage to the position to be detected of display device 10；Displacement module 2 and institute
State discharge module 1 to connect, for described discharge module 1 is moved the position to be detected to display device 10；Image processing module 3
For gathering the image that described display device to be detected shows；Conductive module 4, described to be checked for what discharge module 1 was discharged
The first voltage that location is put is derived；Control module 5 is connected with displacement module 2, image processing module 3, conductive module 4, is used for controlling
Displacement module 2 processed, image processing module 3, conductive module 4 run.
In the electrostatic discharge detection device of the display device 10 of the present embodiment, displacement module 2 is connected with discharge module 1, will
Described discharge module 1 moves the position to be detected to display device 10, by control module 5 command displacement module 2, displacement module
Discharge module is accurately moved to test position by 2.Image processing module 3 gathers the image that display device to be detected shows, manually
Image according to gathering can quickly judge that display device to be detected is the most normal, it is judged that objective, accurate；Mechanical course, saves
Manual operation, also facilitates and bad product is carried out data analysis.The electrostatic discharge detection device of the display device 10 of the present invention is fitted
For detecting various liquid crystal indicator 10.
Embodiment 2:
The present embodiment provide a kind of display device 10 electrostatic discharge detection device, as in figure 2 it is shown, include discharge module 1,
Displacement module 2, image processing module 3, conductive module 4, logging modle 6 and control module 5.
Wherein, discharge module 1；For the first voltage is discharged in the position to be detected of display device 10；Displacement module 2 and institute
State discharge module 1 to connect, for described discharge module 1 is moved the position to be detected to display device 10；Image processing module 3
For gathering the image that described display device to be detected shows；Conductive module 4 is described to be detected for discharged by discharge module 1
First voltage of position is derived；Control module 5 is connected with displacement module 2, image processing module 3, conductive module 4, is used for controlling
Displacement module 2, image processing module 3, conductive module 4 run；Logging modle 6 is connected with described image processing module 3, and being used for will
Position to be detected corresponding when the image that shows of display device to be detected that image processing module 3 judges is abnormal is remembered
Record.
Preferably, described image processing module 3 includes pre-memory cell, for the normal picture of the display device 10 that prestores；
The image that the display device described to be detected gathered is shown by described image processing module contrasts with described normal picture, and judges
The image that display device to be detected shows is the most normal
It is to say, image processing module 3 gather the image that display device to be detected shows after by with the display prestored
The normal picture of device 10 does to contrast and judges that the image that display device to be detected shows is the most normal, and such judged result is more
Objective, more accurate.Concrete, image processing module 3 includes photographing unit or images first-class equipment, uses these equipment shooting figures
Picture, and the interference of external environment light should be avoided in shooting image process, it is ensured that the accuracy of the data of image acquisition.Specifically
, image processing module 3 also includes that image processor etc. is analyzed and judges that the image that display device to be detected shows is the most normal.
Preferably, described conductive module 4 includes static bruss.
It is to say, before discharge module 1 discharges, static bruss brush will be used in the GND region of display device 10, incite somebody to action every time
Electric charge is derived, it is ensured that discharge charge does not adds up, so that test result is more accurate every time.It should be noted that display device 10 is adopted
With above-mentioned static bruss, electrostatic is derived, it is also possible to by support plate ground connection, so that electric charge is derived.
Embodiment 3:
The present embodiment provides the static discharge detection method of a kind of display device 10, as it is shown on figure 3, comprise the following steps:
S1, under the control of control module 5, moved by discharge module 1 to display device 10 one of displacement module 2 is to be checked
Location is put.
It should be noted that as shown in Figure 4, the generally ESD of eight to ten several positions of one display device 10 of detection, bag
Include several positions (alphabetical designation) on display floater, and the upper Lou Tong region, the back side of chip 11 (IC) flexible circuit board 12 (FPC)
Two positions.Number and the detection position of concrete detection position can be entered according to the size of display device 10 and pixel etc.
Row changes and adjusts.
Wherein, before the electrostatic discharge testing of display device 10, first the parameters of control module 5 is set, the most to be measured
The amplitude etc. that the number of test point of display device 10 of examination, discharge mode, discharging model, initial voltage, test voltage increase.
The first voltage is discharged in described position to be detected by S2, discharge module 1.It is to say, control module 5 sets parameter
After, needing first display device 10 to be lighted, electric discharge device discharges according to setting position and order.
Preferably, discharge the first voltage described in step S2 and include any one in contact discharge, atmospherical discharges.Specifically
, described contact discharge range of voltage values is 0～± 8kV.Described atmospherical discharges range of voltage values is 0～± 12kV.
S3, image processing module 3 gather the image that display device to be detected shows, and judge that display device to be detected shows
Image the most normal；If there is the exception that cannot recover, then detection of end in display device to be detected；If display device to be detected
The image of display is normal, or, there is the exception that can recover in display device to be detected, then carry out next step.Concrete, institute
State and judge that the image that display device to be detected shows is the most normally the image display device to be detected of described collection shown
The normal picture contrast prestored with image processing module 3, and judge that the image that display device to be detected shows is the most normal.
A kind of concrete determination methods is given: if the image of display device to be detected 10 display is normal, occurs without and appoint at this
What function display is abnormal, then the result that this point is in this voltage level is judged to that A level is normal；In upper Electrical Test Procedure and test
After end, there are the display/dysfunctions such as splashette, light leak, dimmed, display screen inefficacy in display device 10, but can automatically recover
The state of normal work, within recovery time is 1s, it is determined that abnormal for B level；In upper Electrical Test Procedure and test terminate after, display
There are the display/dysfunctions such as splashette, light leak, dimmed, TP inefficacy in device 10, and recovery time is more than 1s or cannot just automatically recover
Often the state of work, needs manual operation, and such as recovery (reset), restart etc. operates and could recover normal operating conditions, now
It is judged to that C level is abnormal；In upper Electrical Test Procedure and after test terminates, there is display/dysfunction in display device 10, is formed permanent
Property damage, it is impossible to by automatically recovering or manual operation recovers or restarts recovery, it is determined that abnormal for D level, then record mould
Position to be detected corresponding when image that the display device to be detected that image processing module 3 is judged by block 6 shows is abnormal is entered
Row record.If it should be noted that display device the most to be detected is judged as D level extremely, then detection of end.
First voltage of described position to be detected is derived by S4, conductive module 4.It is to say, discharge module 1 discharges every time
Before, static bruss brush will be used in the GND region of display device 10, electric charge is derived, it is ensured that discharge charge does not adds up every time, with
Make test result more accurate.It should be noted that display device 10 can not directly be connected with the earth；It is understood that display
Device 10 can also pass through support plate ground connection, so that electric charge is derived.
S5, repetition step S2-S4 3-10 time.
Discharge module 1 is moved to another position to be detected by S6, displacement module 2, repeats step S2-S5 until completing institute
Need to be detected the detection of position；
S7, change first magnitude of voltage repeat step S1-S6.
Table 1 can find out the testing process that certain display device 10 is concrete more intuitively.It is to say, at ESD test process
In, as shown in the flow process of S7a, S7b, S7c in figure, test is from the beginning of 0, is gradually increased the first voltage of applying, if display dress
Put 10 and then the first voltage can be increased to 4kV by the voltage of 2kV.It should be noted that the first voltage includes positive and negative both sexes
, the first voltage being i.e. gradually increased applying is from the beginning of 0, is gradually increased to the absolute value of positive and negative 12kV.Wherein, to 10 surveys
Pilot carries out contact discharge test and atmospherical discharges test, each test point, and each magnitude of voltage discharges 10 times, puts for adjacent twice
The time interval of electricity should be greater than display device 10 and automatically recovers normal operating conditions and the time of electric charge derivation, generally according to reality
In the range of border operation can be controlled in several seconds.
Table 1
Obviously, also many modifications may be made to for the detailed description of the invention of the various embodiments described above；Such as: the first magnitude of voltage and its
The amplitude etc. increased can be adjusted as required.
It is understood that the principle that is intended to be merely illustrative of the present of embodiment of above and the exemplary enforcement that uses
Mode, but the invention is not limited in this.For those skilled in the art, in the essence without departing from the present invention
In the case of god and essence, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.
Claims (10)
1. the electrostatic discharge detection device of a display device, it is characterised in that including:
Discharge module；For the first voltage is discharged in the position to be detected of display device；
Displacement module；Described displacement module is connected with described discharge module, for moving described discharge module to display device
Position to be detected；
Image processing module；For gathering the image that described display device to be detected shows；
Conductive module, the first voltage of the position described to be detected for being discharged by discharge module is derived；
Control module, described control module is connected with displacement module, image processing module, conductive module, for control bit shifting formwork
Block, image processing module, conductive module run.
The electrostatic discharge detection device of display device the most according to claim 1, it is characterised in that described image procossing mould
Block includes pre-memory cell, is used for the normal picture that prestores；The display device described to be detected gathered is shown by described image processing module
The image shown contrasts with described normal picture, and judges that the image that display device to be detected shows is the most normal.
The electrostatic discharge detection device of display device the most according to claim 1, it is characterised in that described conductive module bag
Include static bruss.
The electrostatic discharge detection device of display device the most according to claim 1, it is characterised in that described detection device is also
Including logging modle, described logging modle is connected with described image processing module, to be checked for judged by image processing module
Survey the image that shows of display device abnormal time corresponding position to be detected carry out record.
5. the static discharge detection method of a display device, it is characterised in that comprise the following steps:
S1, under the control of control module, discharge module is moved a position to be detected to display device by displacement module；
The first voltage is discharged in described position to be detected by S2, discharge module；
S3, image processing module gather the image that display device to be detected shows, and judge the figure that display device to be detected shows
Seem no normally；If there is the exception that cannot recover, then detection of end in display device to be detected；If display device to be detected shows
Image normal, or, there is the exception that can recover in display device to be detected, then carry out next step；
First voltage of described position to be detected is derived by S4, conductive module；
S5, repetition step S2-S4 3-10 time；
Discharge module is moved to another position to be detected by S6, displacement module, repeats step S2-S5 until completing all to be checked
The detection that location is put；
S7, change first magnitude of voltage repeat step S1-S6.
The static discharge detection method of display device the most according to claim 5, it is characterised in that also include at image
The step of the normal picture that reason module prestores；Judge described in step S3 the image that display device to be detected shows be the most normally by
The normal picture contrast that the image that the display device to be detected of described collection shows and image processing module prestore, and judge to be checked
The image that survey display device shows is the most normal.
The static discharge detection method of display device the most according to claim 5, it is characterised in that also include logging modle
Position to be detected corresponding when the image that shows of display device to be detected that judged by image processing module is abnormal is remembered
The step of record.
The static discharge detection method of display device the most according to claim 5, it is characterised in that step S3 also includes sentencing
Normally or the step of exception level, the method for described judgement is the image that disconnected display device to be detected show: if display to be detected
The image that device shows is normal, then be judged to that A level is normal；If display device to be detected occurs abnormal, but can automatically recover, then
It is judged to that B level is normal；If display device to be detected occurs abnormal, it is impossible to automatically recovers, needs manually recover or restart recovery, then
It is judged to that C level is normal；If display device to be detected occurs abnormal, automatic or manual or restart all cannot recover, it is determined that different for D level
Often.
The static discharge detection method of display device the most according to claim 8, it is characterised in that discharge described in step S2
First voltage includes any one in contact discharge, atmospherical discharges.
The static discharge detection method of display device the most according to claim 9, it is characterised in that described contact discharge
Range of voltage values is 0～± 12kV；Described atmospherical discharges range of voltage values is 0～± 18kV.
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| CN108845196A (en) * | 2018-04-16 | 2018-11-20 | 上海与德通讯技术有限公司 | A kind of automatic electrostatic test system |
| CN109298254A (en) * | 2017-07-24 | 2019-02-01 | 中华映管股份有限公司 | The detection method of display device and its static discharge phenomenon |
| CN111638403A (en) * | 2020-05-22 | 2020-09-08 | Tcl华星光电技术有限公司 | Static electricity testing method and testing device |
| CN115480110A (en) * | 2021-06-16 | 2022-12-16 | 北京沃华慧通测控技术有限公司 | Electrostatic discharge testing device and testing method |
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| CN107870493A (en) * | 2017-11-01 | 2018-04-03 | 厦门天马微电子有限公司 | Display panel and display device |
| CN108845196A (en) * | 2018-04-16 | 2018-11-20 | 上海与德通讯技术有限公司 | A kind of automatic electrostatic test system |
| CN111638403A (en) * | 2020-05-22 | 2020-09-08 | Tcl华星光电技术有限公司 | Static electricity testing method and testing device |
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