CN107068027A - Liquid crystal display panel, liquid crystal display panel detecting system and method - Google Patents
Liquid crystal display panel, liquid crystal display panel detecting system and method Download PDFInfo
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- CN107068027A CN107068027A CN201710389236.2A CN201710389236A CN107068027A CN 107068027 A CN107068027 A CN 107068027A CN 201710389236 A CN201710389236 A CN 201710389236A CN 107068027 A CN107068027 A CN 107068027A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 229
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 11
- 239000011159 matrix material Substances 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 230000001934 delay Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 7
- 239000000523 sample Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The present invention provides a kind of liquid crystal display panel, liquid crystal display panel detecting system and method, including viewing area and non-display area, wherein, non-display area includes the first calibrating terminal and the second calibrating terminal；First calibrating terminal is connected with the scan line in liquid crystal display panel, for exporting the test signal received to scan line；Second calibrating terminal is connected with the first calibrating terminal, for receiving output signal, wherein, output signal is signal of the test signal after the first calibrating terminal.By carrying out waveforms detection to output signal, the test signal of signal generator generation can be adjusted in real time, the test signal entered in picture element matrix is set to be consistent substantially after RC transmission delays, so as to be prevented effectively from product when into box lighting test, there is the defect of horizontal band because multigroup test signal RC transmission delays are inconsistent, so as to increase substantially into the yield of box test.
Description
Technical field
The present invention relates to field of liquid crystal, more particularly to a kind of liquid crystal display panel, liquid crystal display panel detection system
System and method.
Background technology
Liquid crystal display (Liquid Crystal Display, abbreviation LCD) can lead into after the completion of box (cell) engineering
Cell lightings are crossed to detect that some lines are bad and the bad defect in face.Multigroup cell calibrating terminals (pad) and test would generally be designed
Line, for providing scan line and data line signal during lighting, as shown in figure 1, cell lighting detects schematic diagrams, wherein CK1, CK2,
CK3 and CK4 represent high frequency clock drive signal (CK).Fig. 2 is a kind of common into box Cleaning Principle schematic diagram, by waveform compilation
To control PG, (Pattern Generator abbreviation, also commonly known as signal occur device (Waveform Editor in such as computer)
Device) signal output waveform, then by PG be into box calibrating terminal (cell test pad) provide signal, scanning-line signal sum
According to line signal from panel is input into box calibrating terminal, so as to light slice, thin piece.In above-mentioned test mode, although from PG export to
The waveform of probe meets original edit request, but ghost effect of the metal wire caused by resistance (R) and electric capacity (C) causes sternly
The transmission delay (RC-delay) of weight, makes waveform after probe engaged test terminal to there is substantially deformation, even if to different tests
Terminal is with identical signal, and the signal being input in panel also likely to be present larger difference.
So, the gate driving circuit of scanning signal output is realized for needing multigroup high frequency clock drive signal
For (Gate Driver On Array, abbreviation GOA) product, just it is easy to different CK signals occur, even if input waveform
Identical, the situation that the scanning signal of output can also have differences causes during cell lightings, picture occurs such as Fig. 3
Shown horizontal band.This abnormal picture, on the one hand reduces the yield of cell lightings；On the other hand, the picture that band is caused
Face can influence the detection to other defect extremely.
The content of the invention
The present invention provides a kind of liquid crystal display panel, liquid crystal display panel detecting system and method, to solve cell points
The impedance of lamp test termination contact is different, and each CK signals RC delay are different to cause picture level band, influence defects detection
The problem of.
First aspect present invention provides a kind of liquid crystal display panel, including viewing area and non-display area, wherein, non-display area
Including the first calibrating terminal and the second calibrating terminal；
Wherein, the first calibrating terminal is connected with the scan line in liquid crystal display panel, for being received to scan line output
Test signal；
Second calibrating terminal is connected with the first calibrating terminal, for receiving output signal, wherein, output signal is believed for test
Signal number after the first calibrating terminal.
Further, test signal includes multiple test subsignals, and the first calibrating terminal includes the multiple first sub- ends of test
Son, the number of the first sub- terminal of test is the multiple of the number of test subsignal, respectively tests subsignal and passes through one or many respectively
The sub- terminal of individual first test is exported to scan line；
The sub- terminal of each first test is connected with each scan line after numbering successively, wherein, reached and respectively swept according to test signal
Each scan line is numbered the time length for retouching line according to order from big to small.
Further, the second calibrating terminal includes the multiple second sub- terminals of test, the second sub- terminal of test and the first test
The number of sub- terminal is identical, and the second sub- terminal of test is tested sub- terminal with first and connected one to one, to receive from corresponding the
The signal of the sub- terminal output of one test.
Further, the first sub- terminal of test is equally divided into the first packet and second packet, each first in the first packet
Testing sub- terminal is used to numbering be that the scan line of odd number is attached, the sub- terminal of each first test in second packet be used for
Numbering is that the scan line of even number is attached.
Further, test subsignal is high frequency clock drive signal.
Second aspect of the present invention provides a kind of liquid crystal display panel detecting system, including signal generator, waveshape detector
And above-mentioned liquid crystal display panel；
Wherein, signal generator is connected with the first calibrating terminal, for generating test signal and being sent to test signal
First calibrating terminal；
Waveshape detector is connected with the second calibrating terminal, for being examined to the output signal exported from the second calibrating terminal
Survey.
Further, waveshape detector is oscillograph.
Third aspect present invention provides a kind of liquid crystal display panel applied to above-mentioned liquid crystal display panel detecting system and examined
Survey method, including：
Signal generator generates test signal, and test signal is sent into the first calibrating terminal；
The test signal received is sent to connected scan line and the second calibrating terminal by the first calibrating terminal；
Second calibrating terminal receives output signal, wherein, output signal is the test signal warp sent from signal generator
The signal crossed after the first calibrating terminal；
Waveshape detector obtains the output signal exported from the second calibrating terminal, and the waveform of output signal is examined
Survey.
Further, test signal includes multiple test subsignals, and the first calibrating terminal includes the multiple first sub- ends of test
Son, the number of the first sub- terminal of test is the multiple of the number of test subsignal, respectively tests subsignal and passes through one or many respectively
The sub- terminal of individual first test is exported to scan line；
The sub- terminal of each first test is connected with each scan line after numbering successively, wherein, reached and respectively swept according to test signal
Each scan line is numbered the time length for retouching line according to order from big to small；
Second calibrating terminal includes of the multiple second sub- terminals of test, the second sub- terminal of test and the first sub- terminal of test
Number is identical, and the second sub- terminal of test connects one to one with the first sub- terminal of test, to receive from the corresponding first sub- end of test
The signal of son output.
Further, waveshape detector obtains the output signal exported from the second calibrating terminal, and to the ripple of output signal
After shape is detected, in addition to：
If there is abnormal, the test signal that adjustment signal generator is generated in real time in the waveform shown in waveshape detector, directly
The waveform shown on to waveshape detector is normal.The present invention provides a kind of liquid crystal display panel, liquid crystal display panel detecting system
And method, by carrying out waveforms detection to output signal, the test signal of generation can be adjusted in real time, make to enter in picture element matrix
Test signal is consistent substantially after RC-delay, so as to be prevented effectively from product when into box lighting test, is surveyed due to multigroup
Trial signal RC-delay is inconsistent to there is the defect of horizontal band, so as to increase substantially into the yield of box test.
Brief description of the drawings
The invention will be described in more detail below based on embodiments and refering to the accompanying drawings.Wherein：
Fig. 1 is in the prior art into box calibrating terminal schematic diagram；
Fig. 2 is in the prior art into box Cleaning Principle schematic diagram；
Fig. 3 is in the prior art into the horizontal band schematic diagram of box lighting process appearance；
Fig. 4 is a structural representation of liquid crystal display panel provided in an embodiment of the present invention；
Fig. 5 is another structural representation of liquid crystal display panel provided in an embodiment of the present invention；
Fig. 6 is the distribution signal of the first calibrating terminal provided in an embodiment of the present invention and the second calibrating terminal on panel
Figure；
Fig. 7 is test signal waveform diagram provided in an embodiment of the present invention；
Fig. 8 is the structural representation of liquid crystal display panel detecting system provided in an embodiment of the present invention；
Fig. 9 is the schematic flow sheet of LCD board detecting method provided in an embodiment of the present invention.
In the accompanying drawings, identical part uses identical reference.Accompanying drawing is not drawn according to actual ratio.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in figure 4, the embodiment of the present invention provides a kind of liquid crystal display panel, including viewing area 11 and non-display area 12,
Wherein, non-display area 12 includes the first calibrating terminal 121 and the second calibrating terminal 122；First calibrating terminal 121 and liquid crystal display
Scan line connection in panel 1, for exporting the test signal received to scan line；Second calibrating terminal 122 and first is surveyed
Examination terminal 121 is connected, for receiving output signal, wherein, output signal is test signal after the first calibrating terminal 121
Signal.
Specifically, when liquid crystal display panel 1 is into after the completion of box engineering, by detected into box lighting some lines it is bad and
The bad defect in face.First calibrating terminal 121 is arranged on the pel array drive signal input of liquid crystal display panel 1, that is, inputs
Drive signal (or test signal) into pel array is incoming by the first calibrating terminal 121.Due to need by probe with
First calibrating terminal 121 is contacted so that test signal inputs the first calibrating terminal 121, but probe and the first calibrating terminal 121
It can be deformed the waveform of test signal after contact, therefore, in the check device and method of prior art, from the first test lead
The signal of the output of son 121 has differences with test signal.In order to recognize this species diversity, the present invention is provided with the second calibrating terminal
122, for obtaining the output signal exported from the first calibrating terminal 121.By the way that the second calibrating terminal 122 and first is tested
Terminal 121 is connected, to receive the output signal exported from the first calibrating terminal 121, by the waveform of contrast test signal with it is defeated
Go out the waveform of signal to know the intensity of anomaly of test signal.Then test signal is adjusted according to output signal in real time, make into
Each test signal entered in picture element matrix is consistent substantially after RC-delay, is surveyed so as to be prevented effectively from product into box lighting
During examination, there is horizontal band because multigroup test signal RC-delay is inconsistent, so as to increase substantially into the yield of box test.
As shown in figure 5, in a specific embodiment of the invention, test signal includes multiple test subsignals, the first calibrating terminal 121
Including the multiple first sub- terminals of test, the number of the first sub- terminal of test is the multiple of test subsignal, each test subsignal point
Do not exported by the one or more first sub- terminals of test to scan line, it is incoming into pixel cell by scan line.
According to the numbering of each scan line from small to large, each first sub- terminal of test is connected with each scan line successively, wherein,
The time length of each scan line is reached to each scan line according to being numbered from big to small according to test signal.
Specifically, test signal can include one or more test subsignals, test subsignal drives for high frequency clock
Signal.Accordingly, the first calibrating terminal 121 may include that (as shown in Figure 5 first surveys the sub- terminal of one or more first tests
Swab terminal 121a-121b), it need to only ensure multiple of the number of the sub- terminal of the first test for test subsignal.Work as test
When subsignal is identical with the first sub- terminal number of test, the first sub- terminal of test and test subsignal are one-to-one relation,
So that each test subsignal to be exported.When the number of the first sub- terminal of test is the multiple of test subsignal, the first sub- end of test
Son can be equally divided into multigroup, and in each group, the first sub- terminal of test is one-to-one relation with test subsignal, will
Each test subsignal output.
Each pixel cell is distributed according to matrix form in array base palte, and the pixel cell with a line connects same
Scan line, the pixel cell of same row connects same data line.First calibrating terminal 121 is arranged on the first row pixel cell
Lastrow (lastrow is approximate location), because the transmission of output signal needs the time, therefore, from the first calibrating terminal 121
The output signal of output, which can be reached first in the first row pixel cell, (namely first reaches the horizontal scanning line that is connected with the first row pixel
In), finally reach in last column pixel cell.Based on above-mentioned principle, scan line is reached into each scan line according to test signal
Time length numbered from big to small.According to the numbering of each scan line from small to large, the sub- terminal of each first test successively with
Each scan line is attached.If any scan line G1-G4, the first sub- terminal T2 of the test tests of sub- terminal T1 and first, then first
Test the sub- terminal T2 of the tests of sub- terminal T1 and first to be connected with scan line G1-G4 successively, i.e., the first sub- terminal T1 of test and scanning
Line G1 and scan line G3 connections, the second sub- terminal T2 of test are connected with scan line G2 and scan line G4.
Further, the second calibrating terminal 122 includes (the second test as shown in Figure 5 of the multiple second sub- terminals of test
Sub- terminal 122a-122d), the second sub- terminal of test is identical with the number of the first sub- terminal of test, and second tests sub- terminal and the
The one sub- terminal of test connects one to one, to receive the signal from the sub- terminal output of the corresponding first test.
The second sub- terminal of test connects one to one with the first sub- terminal of test, so that it is corresponding to obtain the sub- terminal of the first test
Output waveform, with it is real-time adjustment test subsignal, so that product is prevented effectively from when into box lighting test, due to multigroup test
Signal RC-delay is inconsistent to there is horizontal band, so as to increase substantially into the yield of box test.In another tool of the present invention
In body embodiment, the first sub- terminal of test is equally divided into the first packet and second packet, each first test in the first packet
The scan line that terminal is used for numbering in scan line is odd number is attached, and the sub- terminal of each first test in second packet is used for
It is that the scan line of even number is attached with numbering in scan line.As shown in fig. 6, if any the first sub- terminal 121a-121h of test, sweeping
Line G1-G16 (not shown)s are retouched, the first sub- terminal 121a-121h of test 2 groups are equally divided into, the first packet includes first
Sub- terminal 121a-121d is tested, second packet includes the first sub- terminal 121e-121h of test, then first in the first packet
Test sub- terminal 121a-121d successively with scan line G1, G3, G5 ..., G15 be connected, the first sub- terminal of test in second packet
121e-121h successively with scan line G2, G4, G6 ..., G16 is connected.
Further, the second sub- terminal of test is equally divided into the 3rd packet and the 4th packet, wherein, the 3rd is grouped and is used for
Each output signal exported from the first packet is received, the 4th is grouped for receiving each output exported from second packet letter
Number.As shown in fig. 6, so that the 3rd packet includes the second sub- terminal 122a-122d of test as an example, the first sub- terminal 121a of test and
The second sub- terminal 122a of test is attached by line L1, similarly, the first sub- terminal of the test tests of sub- terminal 121b and second
122b is attached by line L2 (not shown)s；The first sub- terminal 122c of the test tests of sub- terminal 121c and second passes through line
L3 (not shown)s are attached；The first sub- terminal 121d of test tests sub- terminal 122d by line L4 (in figure not with second
Show) it is attached.Then the output signal of output is synchronously detected by oscillograph, waveform production is adjusted in real time according to output signal
The input signal of raw device, makes each test signal into picture element matrix be consistent substantially after RC delay.Said apparatus can
(Gate Driver on Array, abbreviation GOA) product is driven when into box lighting test to be prevented effectively from array base palte row, by
It is inconsistent in multigroup test signal signal RC delay, there is horizontal band, so as to increase substantially into the yield of box test.
Fig. 7 is the waveform diagram of test signal, there is 4 test subsignals in the figure 7.
As shown in figure 8, the embodiment of the present invention also provides a kind of liquid crystal display panel detecting system, including signal generator 2,
Liquid crystal display panel 1 in waveshape detector 3 and above-described embodiment；Wherein, signal generator 2 connects with the first calibrating terminal 121
Connect, for generating test signal and test signal being sent into the first calibrating terminal 121；The test lead of waveshape detector 3 and second
Son 122 is connected, for being detected to the output signal exported from the second calibrating terminal 122.
The present embodiment generates test signal by signal generator 2, by 3 pairs of waveshape detector from the second calibrating terminal
The output signal of 122 outputs is detected, test letter is known by the waveform of contrast test signal and the waveform of output signal
Number intensity of anomaly.The signal generator of signal generator 2 can be according to the ripple to be set in the external Waveform Editor in computer
Shape produces corresponding output signal, and specific signal generating method and device are prior art category, the present invention is repeated no more.
Further, said system can adjust the test signal of the generation of signal generator 2 in real time according to output signal, make to enter pixel
Each test signal in matrix is consistent substantially after RC-delay, so that product is prevented effectively from when into box lighting test,
There is horizontal band because multigroup test signal RC-delay is inconsistent, so as to increase substantially into the yield of box test.
Waveshape detector 3 is preferably oscillograph.As shown in figure 9, the embodiment of the present invention also provides a kind of liquid crystal display panel 1
Detection method, applied in the detecting system of liquid crystal display panel 1 in above-described embodiment, is specifically included：
Step 101, signal generator generation test signal, and test signal is sent to the first calibrating terminal.Signal is sent out
Raw device can be the Waveform Editor in computer, for editing test signal.
Step 102, the test signal received is sent to connected scan line and second and surveyed by the first calibrating terminal
Try terminal.
Step 103, the second calibrating terminal receives output signal, wherein, output signal is the survey sent from signal generator
Signal of the trial signal after the first calibrating terminal.
Because waveshape detector needs to contact the test signal input the so as to generate with the first calibrating terminal by probe
One calibrating terminal, but probe can be deformed the waveform of test signal after being contacted with the first calibrating terminal, i.e., surveyed from first
The signal of examination terminal output has differences with test signal.In order to recognize this species diversity, there is provided the second calibrating terminal, to obtain
The output signal exported from the first calibrating terminal.
Step 104, waveshape detector obtains the output signal exported from the second calibrating terminal, and to the waveform of output signal
Detected.
Second calibrating terminal sends output signal to waveshape detector, and waveshape detector is entered to the output signal received
Row wave recurrence, waveshape detector is preferably oscillograph.Obtained by the waveform of contrast test signal and the waveform of output signal
Know the intensity of anomaly of test signal.
Above-mentioned panel, by carrying out waveforms detection to output signal, signal generator can be adjusted in real time into box detection method
The test signal of generation, makes each test signal entered in picture element matrix be consistent substantially after RC delay, so that effectively
Product is avoided when into box lighting test, horizontal band occurs because multigroup test signal RC delay are inconsistent, so that significantly
Degree improves into the yield of box test.
Further, also include after step 104：If there is abnormal, real-time tune in the waveform shown in waveshape detector
The test signal of entire signal generator generation, until the waveform shown in waveshape detector is normal.
Further, test signal includes multiple test subsignals, and the first calibrating terminal includes the multiple first sub- ends of test
Son, the number of the first sub- terminal of test is the multiple of test subsignal, respectively tests subsignal and passes through one or more first respectively
Sub- terminal is tested to export to scan line；According to the numbering of each scan line from small to large, the sub- terminal of each first test is successively with respectively sweeping
Line is retouched to be connected, wherein, the time length of each scan line is reached to each scan line according to compiling from big to small according to test signal
Number.The part is consistent into box detection means appropriate section with panel, for details, reference can be made to corresponding description, will not be repeated here.
Further, the second calibrating terminal includes the multiple second sub- terminals of test, the second sub- terminal of test and the first test
The number of sub- terminal is identical, and the second sub- terminal of test is tested sub- terminal with first and connected one to one, to receive from corresponding the
The signal of the sub- terminal output of one test.The part is consistent into box detection means appropriate section with panel, for details, reference can be made to corresponding
Description, will not be repeated here.
Further, the first sub- terminal of test is equally divided into the first packet and second packet, each first in the first packet
Test the scan line that sub- terminal is used for numbering in scan line is odd number to be attached, each sub- end of first test in second packet
The scan line that son is used for numbering in scan line is even number is attached.The part and panel are into box detection means appropriate section one
Cause, for details, reference can be made to corresponding description, will not be repeated here.
Although by reference to preferred embodiment, invention has been described, is not departing from the situation of the scope of the present invention
Under, various improvement can be carried out to it and part therein can be replaced with equivalent.Especially, as long as in the absence of structure punching
Prominent, the every technical characteristic being previously mentioned in each embodiment can combine in any way.The invention is not limited in text
Disclosed in specific embodiment, but all technical schemes including falling within the scope of the appended claims.
Claims (10)
1. a kind of liquid crystal display panel, it is characterised in that including viewing area and non-display area, wherein, the non-display area includes
First calibrating terminal and the second calibrating terminal；
First calibrating terminal is connected with the scan line in liquid crystal display panel, for exporting what is received to the scan line
The test signal；
Second calibrating terminal is connected with first calibrating terminal, for receiving output signal, wherein, the output signal
For signal of the test signal after first calibrating terminal.
2. liquid crystal display panel according to claim 1, it is characterised in that the test signal includes multiple test letters
Number, first calibrating terminal includes the multiple first sub- terminals of test, and the number of the sub- terminal of first test is the test
The multiple of the number of subsignal, each test subsignal respectively by the sub- terminal of one or more first tests export to
The scan line；
The sub- terminal of each first test is connected with each scan line after numbering successively, wherein, according to the test signal
Each scan line is numbered the time length for reaching each scan line according to order from big to small.
3. liquid crystal display panel according to claim 2, it is characterised in that second calibrating terminal includes multiple second
Sub- terminal is tested, the sub- terminal of second test is identical with the number of the described first sub- terminal of test, the sub- end of the second test
It is sub to be connected one to one with the described first sub- terminal of test, to receive the letter from the corresponding sub- terminal output of first test
Number.
4. liquid crystal display panel according to claim 3, it is characterised in that the sub- terminal of first test is equally divided into the
One packet and second packet, the scan line that the sub- terminal of each first test in first packet is used for numbering is odd number
It is attached, the sub- terminal of each first test in the second packet is used to be connected with the scan line that numbering is even number
Connect.
5. the liquid crystal display panel according to claim any one of 2-4, it is characterised in that the test subsignal is high frequency
Clock drive signals.
6. a kind of liquid crystal display panel detecting system, it is characterised in that including signal generator, waveshape detector and as right will
Seek the liquid crystal display panel described in any one of 1-5；
Wherein, the signal generator is connected with the first calibrating terminal, for generating test signal and sending out the test signal
Give first calibrating terminal；
Waveshape detector is connected with the second calibrating terminal, for being examined to the output signal exported from second calibrating terminal
Survey.
7. liquid crystal display panel detecting system according to claim 6, it is characterised in that the waveshape detector is oscillography
Device.
8. a kind of LCD board detecting method of liquid crystal display panel detecting system applied to claim 6 or 7, it is special
Levy and be, including：
Signal generator generates test signal, and the test signal is sent into the first calibrating terminal；
The test signal received is sent to connected scan line and the second test lead by first calibrating terminal
Son；
Second calibrating terminal receives output signal, wherein, the output signal is the institute that is sent from the signal generator
State signal of the test signal after first calibrating terminal；
Waveshape detector obtains the output signal exported from second calibrating terminal, and to the waveform of the output signal
Detected.
9. LCD board detecting method according to claim 8, it is characterised in that the test signal includes multiple
Subsignal is tested, first calibrating terminal includes the multiple first sub- terminals of test, and the number of the sub- terminal of first test is
The multiple of the number of the test subsignal, each test subsignal passes through one or more sub- ends of first test respectively
Son is exported to the scan line；
The sub- terminal of each first test is connected with each scan line after numbering successively, wherein, according to the test signal
Each scan line is numbered the time length for reaching each scan line according to order from big to small；
Second calibrating terminal includes the multiple second sub- terminals of test, the sub- terminal of second test and the described first test
The number of terminal is identical, and the sub- terminal of second test connects one to one with the described first sub- terminal of test, to receive slave phase
The signal for the sub- terminal output of first test answered.
10. LCD board detecting method according to claim 8 or claim 9, it is characterised in that waveshape detector obtain from
The output signal of second calibrating terminal output, and after being detected to the waveform of the output signal, in addition to：
If there is abnormal, the test letter of adjustment signal generator generation in real time in the waveform shown in the waveshape detector
Number, until the waveform shown in the waveshape detector is normal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710389236.2A CN107068027B (en) | 2017-05-27 | 2017-05-27 | Liquid crystal display panel, liquid crystal display panel detection system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710389236.2A CN107068027B (en) | 2017-05-27 | 2017-05-27 | Liquid crystal display panel, liquid crystal display panel detection system and method |
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| CN107068027B CN107068027B (en) | 2020-12-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109637407A (en) * | 2019-01-09 | 2019-04-16 | 惠科股份有限公司 | Method and device for repairing display panel and driving method of display panel |
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