CN106501975A - The method of testing and test device of display panels - Google Patents
The method of testing and test device of display panels Download PDFInfo
- Publication number
- CN106501975A CN106501975A CN201610998054.0A CN201610998054A CN106501975A CN 106501975 A CN106501975 A CN 106501975A CN 201610998054 A CN201610998054 A CN 201610998054A CN 106501975 A CN106501975 A CN 106501975A
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- China
- Prior art keywords
- display panels
- flicker
- common electrode
- measuring instrument
- signal source
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The present invention discloses a kind of method of testing of display panels and test device.The method includes：Flicker measuring instrument measurement obtains the current flicker value of display panels, and flicker value is fed back to signal source；Signal source adjustment common electrode signal and by adjustment after common electrode signal be applied to display panels, until the flicker value that flicker measuring instrument is obtained is minimum；Common electrode signal of the signal source by flicker value when minimum is applied to display panels, to carry out into box test.The present invention can be directed to the actual conditions of display panels and adjust common electrode signal, reduce the generation of scintillation, improve into the accuracy of box test phase manual detection.
Description
Technical field
The present invention relates to technical field of liquid crystal display, in particular to a kind of method of testing of display panels and survey
Trial assembly is put.
Background technology
LCD (Liquid Crystal Display, liquid crystal display) is due to, the advantages of lightening and low-power consumption, being current
Main flow display device in market, and in process of producing product, in order to improve product yield, need to enter display panels
Go into box test (Cell test).
The operation principle of display panels is：In array base palte (Array Substrate) and colored filter substrate
Apply gray scale voltage and public (V-com) voltage respectively to control the inclined of liquid crystal molecule on (Color Filter Substrate)
Turn direction, the light of backlight module is reflected generation picture.Wherein, gray scale voltage and common electric voltage can be considered GTG electricity
Pressure signal and common electrode signal, when common electric voltage is located at the positive-negative polarity deflection center of gray scale voltage, display panels
Display effect optimal.However, the actual processing conditions of each display panels are different, common electric voltage is caused to deviate GTG electricity
The positive-negative polarity deflection center of pressure so that flicker (flicker) phenomenon occur in display panels, so that affect into box test rank
The accuracy of section manual detection.
Content of the invention
In view of this, the embodiment of the present invention provides a kind of method of testing of display panels and test device, Neng Gouzhen
Common electrode signal is adjusted to the actual conditions of display panels, the generation of scintillation is reduced, is improved into box test phase
The accuracy of manual detection.
The method of testing of the display panels of one embodiment of the invention, methods described are applied to the survey of display panels
Trial assembly is put, and the test device includes that probe groups, signal source and flicker measuring instrument, probe groups connect liquid crystal display to be tested
Panel into box testing cushion, signal source respectively with probe groups and flicker measuring instrument be connected, methods described includes：Signal source is liquid crystal
Display floater provides common electrode signal so that display panels show flicker picture；Flicker measuring instrument measurement obtains liquid crystal
The current flicker value of display floater, and flicker value is fed back to signal source；After signal source adjustment common electrode signal will simultaneously be adjusted
Common electrode signal be applied to display panels, until the flicker value that flicker measuring instrument is obtained is minimum；Signal source will flash
Common electrode signal when value is minimum is applied to display panels, to carry out into box test.
Wherein, before flicker measuring instrument measurement obtains the current flicker value of display panels, methods described also includes：
, to scan display panels, the predetermined direction is parallel to LCD for track movement flicker measuring instrument along predetermined direction
One side of plate；Before common electrode signal when signal source is minimum by flicker value is applied to display panels, the side
Method also includes：Outside flicker measuring instrument is moved to display panels along track.
Wherein, the track includes the chute and support perpendicular to chute along predetermined direction arrangement, one end of support with
Flicker measuring instrument is fixedly connected, and the other end of support is removable with chute to be connected.
Wherein, signal source adjustment common electrode signal and by adjustment after common electrode signal be applied to liquid crystal display
Panel, until the flicker value that flicker measuring instrument is obtained is minimum, including：Whether the adjacent flicker value for obtaining twice after judging to adjust
Diminish；When the adjacent flicker value for obtaining twice is equal, judge that flicker value is minimum.
The test device of the display panels of one embodiment of the invention, including：Probe groups, for connecting liquid to be tested
LCD panel into box testing cushion；Signal source, for providing common electrode signal by probe groups for display panels, makes
Obtain display panels and show flicker picture；Flicker measuring instrument, obtains the current flicker value of display panels for measuring, and
Flicker value is fed back to signal source；Signal source be additionally operable to adjust common electrode signal and by adjustment after common electrode signal apply
Display panels are given, until the flicker value that flicker measuring instrument is obtained is minimum；Signal source is further used for when will be minimum for flicker value
Common electrode signal be applied to display panels, with carry out into box test.
Wherein, described device also includes the track arranged along predetermined direction, for along predetermined direction movement flicker measuring instrument
To scan display panels, and outside flicker measuring instrument is moved to display panels along track, the predetermined direction
A side parallel to display panels.
Wherein, the track includes the chute and support perpendicular to chute along predetermined direction arrangement, one end of support with
Flicker measuring instrument is fixedly connected, and the other end of support is removable with chute to be connected.
Wherein, signal source be used for judge adjustment after the adjacent flicker value for obtaining twice whether diminish, and adjacent twice
When the flicker value of acquisition is equal, judge that flicker value is minimum.
Wherein, described device also includes backlight module, for providing light source for display panels.
Beneficial effect：The embodiment of the present invention is according to the current flicker value adjustment public electrode letter of each display panels
Number, until the flicker value of display panels is minimum, i.e., the actual conditions for display panels adjust common electrode signal
Until obtaining optimal common electrode signal, the generation of scintillation is reduced with this, so as to improve into box test phase manual detection
Accuracy.
Description of the drawings
Fig. 1 is the structure top view of one embodiment of test device of the display panels of the present invention；
Fig. 2 is the structural side view of the test device of display panels shown in Fig. 1；
Fig. 3 is the schematic flow sheet of one embodiment of method of testing of the display panels of the present invention.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, the skill to each exemplary embodiment provided by the present invention
Art scheme is clearly and completely described.In the case where not conflicting, the feature in each embodiment following and embodiment can
To be mutually combined.Also, the of the invention directional terminology for being adopted in full, for example " on ", the wording such as D score, be for more preferably
Description each embodiment, be not intended to limit protection scope of the present invention.
Fig. 1 and Fig. 2 is referred to, is the test device of the display panels of one embodiment of the invention.The test device
10 include probe groups 11, signal source 12, flicker measuring instrument 13, track 14 and backlight module 15.
Backlight module 15 is used for providing the light source needed for picture shows for display panels 20 to be tested.
Probe groups 11 include multiple probes, test into box for connecting the multiple of display panels 20 to be tested respectively
Pad 21, so as to the signal needed for providing display picture for display panels 20.For example, as shown in figure 1, probe groups 11 include many
Individual probe 111 and multiple probes 112, probe 111 are used for being connected to provide raster data model with the gate line of display panels 20
Signal, probe 112 are used for being connected to provide gray scale voltage signal with the data wire of display panels 20.Certainly, the probe
Group 11 also includes the probe for being connected with the public electrode of display panels 20, public to provide as display panels 20
Electrode signal.
Signal source 12 is used for providing various signals, such as public electrode letter by probe groups 11 for display panels 20
Number so that display panels 20 show flicker picture.
Flicker measuring instrument 13 is used for measuring the current flicker value of acquisition display panels 20, also known as flicker values, and will
The flicker value feeds back to signal source 12.Alternatively, flicker measuring instrument 13 is fixed on one end of the support 141 of track 14, and such as Fig. 1
Shown, the top that measuring instrument 13 is located at display panels 20 is flashed, the other end of support 141 is removable with chute 142 to be connected,
Predetermined direction of the chute 142 along the side parallel to display panels 20 arranges that support 141 is perpendicular to the predetermined direction.
For example, chute 142 is horizontally disposed and support 141 is vertically arranged, and flicker measuring instrument 13 is moved in the horizontal direction
To scan display panels 20, the current flicker value of display panels 20 is obtained so as to measure.
Signal source 12 adjustment common electrode signal and by adjustment after common electrode signal be applied to display panels 20,
Until the flicker value that flicker measuring instrument 13 is obtained is minimum.That is, signal source 12 adjusts common electrode signal to being applied to
The optimal common electrode signal of the display panels 20, now common electrode signal be located at gray scale voltage signal positive-negative polarity
Deflection center, display panels 20 do not occur scintillation in other words eye recognition less than scintillation.Specifically, signal source
Whether the adjacent flicker value for obtaining twice after 12 (built-in processors) judge to adjust diminishes, if the adjacent sudden strain of a muscle for obtaining twice
Bright value is equal, then judge that flicker value is minimum；If adjacent twice in after the flicker value that once obtains be less than the front sudden strain of a muscle for once obtaining
Bright value.Then continue adjustment common electrode signal, until the adjacent flicker value for obtaining twice is equal.
Signal source 12 is further used for the common electrode signal by flicker value when minimum and is applied to display panels 20, with
Carry out into box test.Wherein, before manual detection display panels 20, the present embodiment will flash measuring instrument 13 along track 14
It is moved to outside 20 region of display panels, such as region shown in dotted line in Fig. 1.
In conjunction with the work for shown in Fig. 3, display panels 20 being carried out into box test by the test device 10 of the present embodiment
Principle and process may comprise steps of S31～S34.
S31：Signal source provides common electrode signal for display panels so that display panels show flicker picture
Face.
S32：Flicker measuring instrument measurement obtains the current flicker value of display panels, and flicker value is fed back to signal
Source.
S33：Signal source adjustment common electrode signal and by adjustment after common electrode signal be applied to display panels,
Until the flicker value that flicker measuring instrument is obtained is minimum.
S34：Common electrode signal of the signal source by flicker value when minimum is applied to display panels, to carry out into box survey
Examination.
From the foregoing, unlike the prior art, the embodiment of the present invention can be according to each display panels 20
Current flicker value adjustment common electrode signal, the i.e. actual conditions for each display panels 20 adjust public electrode letter
Number until obtain optimal common electrode signal, the generation of scintillation is reduced with this, so as to avoid flashing the impact to human eye, is carried
The high accuracy into box test phase manual detection.
Wherein, the measurement of flicker measuring instrument 13 obtains the principle and mistake of flicker value and the adjustment common electrode signal of signal source 12
Journey, see prior art, and here is omitted.
It should be understood that the foregoing is only embodiments of the invention, the scope of the claims of the present invention, every profit is not thereby limited
The equivalent structure that is made with description of the invention and accompanying drawing content or equivalent flow conversion, such as technical characteristic between each embodiment
Be combined with each other, or be directly or indirectly used in other related technical fields, be included in the patent protection of the present invention in the same manner
In the range of.
Claims (9)
1. a kind of method of testing of display panels, it is characterised in that methods described is applied to the test of display panels
Device, the test device include that probe groups, signal source and flicker measuring instrument, the probe groups connect liquid crystal to be tested
Show panel into box testing cushion, the signal source is connected with the probe groups and the flicker measuring instrument respectively, methods described bag
Include：
The signal source provides common electrode signal for the display panels so that the display panels show flicker
Picture；
The flicker measuring instrument measurement obtains the current flicker value of the display panels, and the flicker value is fed back to institute
State signal source；
Signal source adjustment common electrode signal and by adjustment after common electrode signal be applied to the display panels,
Until the flicker value that the flicker measuring instrument is obtained is minimum；
Common electrode signal of the signal source by flicker value when minimum is applied to the display panels, to carry out into box survey
Examination.
2. method according to claim 1, it is characterised in that
Before the flicker measuring instrument measurement obtains the current flicker value of the display panels, methods described also includes：
The flicker measuring instrument is moved to scan the display panels along the track of predetermined direction, the predetermined direction is parallel
A side in the display panels；
Before common electrode signal when the signal source is minimum by flicker value is applied to the display panels, the side
Method also includes：
Outside the flicker measuring instrument is moved to the display panels along the track.
3. method according to claim 2, it is characterised in that the track includes the chute along predetermined direction arrangement
And the support perpendicular to the chute, one end of the support with described flicker measuring instrument be fixedly connected, the support another
One end is removable with the chute to be connected.
4. method according to claim 1, it is characterised in that the signal source adjustment common electrode signal simultaneously will be after adjustment
Common electrode signal be applied to the display panels, until the flicker value that the flicker measuring instrument is obtained is minimum, including：
Whether the adjacent flicker value for obtaining twice after judging to adjust diminishes；
When the adjacent flicker value for obtaining twice is equal, judge that the flicker value is minimum.
5. a kind of test device of display panels, it is characterised in that described device includes：
Probe groups, for connect display panels to be tested into box testing cushion；
Signal source, for providing common electrode signal by the probe groups for the display panels so that the liquid crystal
Display floater shows flicker picture；
Flicker measuring instrument, obtains the current flicker value of the display panels for measuring, and the flicker value is fed back to
The signal source；
The signal source be additionally operable to adjust common electrode signal and by adjustment after common electrode signal be applied to the liquid crystal
Show panel, until the flicker value that the flicker measuring instrument is obtained is minimum；
The signal source is further used for the common electrode signal by flicker value when minimum and is applied to the display panels, with
Carry out into box test.
6. device according to claim 5, it is characterised in that described device also includes the track arranged along predetermined direction,
For moving the flicker measuring instrument to scan the display panels along the predetermined direction, and the flicker is measured
Instrument is moved to along the track outside the display panels, the predetermined direction parallel to the display panels
Side.
7. device according to claim 6, it is characterised in that the track includes the chute along predetermined direction arrangement
And the support perpendicular to the chute, one end of the support with described flicker measuring instrument be fixedly connected, the support another
One end is removable with the chute to be connected.
8. device according to claim 5, it is characterised in that the signal source be used for judging adjustment after adjacent obtain twice
Whether the flicker value for obtaining diminishes, and when the adjacent flicker value for obtaining twice is equal, judges that the flicker value is minimum.
9. device according to claim 5, it is characterised in that described device also includes backlight module, for for the liquid
LCD panel provides light source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998054.0A CN106501975A (en) | 2016-11-11 | 2016-11-11 | The method of testing and test device of display panels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610998054.0A CN106501975A (en) | 2016-11-11 | 2016-11-11 | The method of testing and test device of display panels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106501975A true CN106501975A (en) | 2017-03-15 |
Family
ID=58324286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610998054.0A Pending CN106501975A (en) | 2016-11-11 | 2016-11-11 | The method of testing and test device of display panels |
Country Status (1)
| Country | Link |
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| CN (1) | CN106501975A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464513A (en) * | 2017-09-18 | 2017-12-12 | 惠科股份有限公司 | The film flicker automatic checkout system and detection method of a kind of display panel |
| CN111754947A (en) * | 2019-03-28 | 2020-10-09 | 咸阳彩虹光电科技有限公司 | Method for adjusting uneven flicker of display screen |
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| JPH05323379A (en) * | 1992-05-18 | 1993-12-07 | Sony Corp | Method and device for inspecting liquid crystal display device |
| CN101082710A (en) * | 2006-06-02 | 2007-12-05 | 群康科技(深圳)有限公司 | Liquid-crystal display and method of driving liquid-crystal display |
| US20080297538A1 (en) * | 2007-05-31 | 2008-12-04 | Samsung Electronics Co., Ltd | Apparatus and method for setting a common voltage |
| CN103185974A (en) * | 2011-12-28 | 2013-07-03 | 上海天马微电子有限公司 | Liquid crystal display device, liquid crystal display panel and method for adjusting common voltage of liquid crystal display panel |
| CN105070264A (en) * | 2015-09-07 | 2015-11-18 | 昆山龙腾光电有限公司 | Common voltage adjustment system and method of liquid crystal display panel |
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2016
- 2016-11-11 CN CN201610998054.0A patent/CN106501975A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05323379A (en) * | 1992-05-18 | 1993-12-07 | Sony Corp | Method and device for inspecting liquid crystal display device |
| CN101082710A (en) * | 2006-06-02 | 2007-12-05 | 群康科技(深圳)有限公司 | Liquid-crystal display and method of driving liquid-crystal display |
| US20080297538A1 (en) * | 2007-05-31 | 2008-12-04 | Samsung Electronics Co., Ltd | Apparatus and method for setting a common voltage |
| CN103185974A (en) * | 2011-12-28 | 2013-07-03 | 上海天马微电子有限公司 | Liquid crystal display device, liquid crystal display panel and method for adjusting common voltage of liquid crystal display panel |
| CN105070264A (en) * | 2015-09-07 | 2015-11-18 | 昆山龙腾光电有限公司 | Common voltage adjustment system and method of liquid crystal display panel |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464513A (en) * | 2017-09-18 | 2017-12-12 | 惠科股份有限公司 | The film flicker automatic checkout system and detection method of a kind of display panel |
| CN107464513B (en) * | 2017-09-18 | 2023-11-21 | 惠科股份有限公司 | Automatic picture flicker detection system and method for display panel |
| CN111754947A (en) * | 2019-03-28 | 2020-10-09 | 咸阳彩虹光电科技有限公司 | Method for adjusting uneven flicker of display screen |
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Application publication date: 20170315 |