CN106990570A - The most suitable common electric voltage measuring method and device of liquid crystal panel - Google Patents
The most suitable common electric voltage measuring method and device of liquid crystal panel Download PDFInfo
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- CN106990570A CN106990570A CN201710391211.6A CN201710391211A CN106990570A CN 106990570 A CN106990570 A CN 106990570A CN 201710391211 A CN201710391211 A CN 201710391211A CN 106990570 A CN106990570 A CN 106990570A
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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
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Abstract
The invention discloses a kind of most suitable common electric voltage measuring method of liquid crystal panel, including step：Control module provides test pictures and all common electric voltages to be tested to module is lighted；Light test pictures that module provides according to control module and all common electric voltage control liquid crystal panels to be tested show test pictures under all common electric voltages to be tested；Flicker degree acquisition module obtains all flicker angle value when liquid crystal panel liquid crystal panel under each common electric voltage to be tested shows test pictures, and all flicker angle value of detecting are supplied into control module；Control module receives all flicker angle value of the liquid crystal panel of flicker degree acquisition module transmission under each common electric voltage to be tested during liquid crystal panel display test pictures, and obtains the corresponding voltage to be measured of wherein minimum flicker angle value as most suitable voltage in all flicker angle value.The present invention solves the problem of longer most suitable voltage time and low precision are measured in liquid crystal panel manufacturing industry, improves the measurement capability of most suitable voltage.
Description
Technical field
The present invention relates to the most suitable common electric voltage measurement side of technical field of liquid crystal display, more particularly to a kind of liquid crystal panel
Method.
Background technology
Liquid crystal display device (Liquid Crystal Display, LCD) has good image quality, small volume, lightweight, low drive
The advantages of dynamic voltage, low-power consumption, radiationless and relatively low manufacturing cost, occupied an leading position at present in flat display field.Its
Be widely used in desktop computer, palmtop computer, personal digital assistant (Personal Digital Assistant,
PDA), in a variety of office automations such as portable phone, TV box and audio-visual equipment.
Liquid crystal display device include array base palte, colored optical filtering substrates, be folded in array base palte and colored optical filtering substrates it
Between liquid crystal layer, when liquid crystal display device works, load driver voltage and common electric voltage are to pixel electrode and public electrode respectively
To produce electric field between liquid crystal layer, the yawing moment of liquid crystal molecule can be with the driving voltage and the difference of common electric voltage that are loaded
And change, so as to control the light percent of pass by liquid crystal layer, and then control the brightness of each pixel cell of liquid crystal display device.
In the liquid crystal display device course of work, due to the presence of induced voltage, panel is set naked eyes occur when lighting visible
Flicker, and scintillation it is serious when, not only had a strong impact on the display effect of liquid crystal display device, but also observer can be caused
Visual fatigue and other discomforts.And by adjusting common electric voltage, the most suitable voltage of liquid crystal panel driving is measured, with the sense that makes corrections
Voltage is answered, the flicker level of liquid crystal display device can be adjusted to minimum, liquid crystal panel is visible by naked eyes flicker when lighting
Phenomenon so that the display effect of liquid crystal display device reach it is best.So the most suitable of common electric voltage must be measured before dispatching from the factory
Voltage, makes the flicker level of picture be minimized value, improves viewing effect.
Existing common electric voltage measuring method is mostly that the optimal common electrical in a period of time is measured using manual type
Pressure, its specific method is manually the common electric voltage of required debugging to be supplied to the liquid crystal panel of liquid crystal display device, and survey successively
The corresponding common electric voltage of wherein minimum flicker level is taken in one flicker angle value of amount, all flicker angle value as optimal common electrical
Pressure, to reach the purpose for ensureing that liquid crystal display device is in minimum flicker level.Above-mentioned manual debugging method, is present because of artificial warp
Test with the individual difference such as qualification, data record can be caused inaccurate unavoidably, the degree of accuracy for causing common electric voltage to debug is relatively low.
And liquid crystal display device quantity can be relatively more in measurement process, in addition it is also necessary to the common electrical of non-volatile recording liquid crystal display device
Pressure, expends substantial amounts of human and material resources and time, and debugging efficiency is very low.
The content of the invention
In order to solve the above technical problems, the present invention provides a kind of most suitable common electric voltage measuring method of liquid crystal panel, realize
Automatically the purpose of the most suitable voltage of common electric voltage, is quickly and accurately measured.
The technical scheme that the present invention is provided is as follows：
The invention discloses a kind of most suitable common electric voltage measuring method of liquid crystal panel, including step：Control module is to point
Bright module provides test pictures and all common electric voltages to be tested；Light test pictures and institute that module is provided according to control module
There is common electric voltage control liquid crystal panel to be tested to show test pictures under all common electric voltages to be tested；Flicker degree acquisition module
All flicker angle value when liquid crystal panel liquid crystal panel under each common electric voltage to be tested shows test pictures are obtained, and will
All flicker angle value of detecting are supplied to control module；Control module receives the liquid crystal panel of flicker degree acquisition module transmission every
All flicker angle value under one common electric voltage to be tested during liquid crystal panel display test pictures, and obtained in all flicker angle value
The corresponding voltage to be measured of wherein minimum flicker angle value is taken as most suitable voltage.
The present invention shows the flicker angle value of test pictures by automatically obtaining liquid crystal panel, and determines public affairs according to flicker angle value
The most suitable voltage of common voltage, the most suitable voltage for efficiently solving existing liquid crystal panel is, by adjusting voltage manually, and to pass through
Human eye is observed, and there is the defect that consuming time length, error are larger, measuring accuracy is not high.
Further, the common electric voltage to be tested is increased or reduced change according to the first constant changing value.
Further, the step " control module provides all common electric voltages to be tested to module is lighted " further comprises step
Suddenly：The multiple first common electric voltages to be tested are produced in the measurement range of the common electric voltage to be tested；The multiple first treats
Test common electric voltage is increased or reduced according to the second constant changing value；Second changing value is more than the described first change
Value；First common electric voltage to be measured, the liquid crystal panel detected until flicker degree acquisition module are provided to lighting module successively
Show that minimum flicker angle value occurs in flicker angle value during test pictures；According to flicker angle value for minimum flicker angle value it is corresponding described in
The reference range of most suitable voltage described in first common electric voltage determination to be measured；It is to be tested that multiple second are produced according to the reference range
Common electric voltage, and it regard the described second common electric voltage to be tested as voltage to be tested.
The present invention first determines the reference range of most suitable voltage when carrying out most suitable voltage measurement in measurement range, then passes through
The reference range of most suitable voltage is accurately measured, and reduces measurement point, efficiently reduces the time of measurement, further increases measurement
Efficiency.
Further, the step " obtains liquid crystal panel liquid crystal panel display test under each common electric voltage to be tested
All flicker angle value during picture " further comprise step：Repeatedly shoot what liquid crystal panel was shown under different voltages to be tested
Test pictures, obtain the multiframe test pictures under each common electric voltage to be tested；According to each common electric voltage to be tested of shooting
Multiframe test pictures calculate flicker angle value of the liquid crystal panel under each common electric voltage to be tested.
When the present invention shows that flicker angle value during test pictures is measured to liquid crystal panel, same to be tested public
Multiframe test pictures are obtained under voltage, liquid crystal surface under a common electric voltage to be tested is determined according to the brightness value of multiframe test pictures
Plate shows flicker angle value during test pictures, and the accuracy of measurement has been effectively ensured.
Further, the step " calculates liquid crystal surface according to the multiframe test pictures of each common electric voltage to be tested of shooting
Flicker angle value of the plate under each common electric voltage to be tested " further comprises step：Count under each common electric voltage to be tested
Each frame test pictures brightness value, so as to obtain multiple brightness values of multiframe test pictures, and determine multiframe test pictures
Multiple brightness values in maximum brightness value and minimum brightness value；Each is determined according to maximum brightness value and minimum brightness value is stated
Liquid crystal panel shows the flicker angle value of test pictures under common electric voltage to be tested.
Invention additionally discloses a kind of most suitable common electric voltage measurement apparatus of liquid crystal panel, including：Control module, with the control
Flicker degree acquisition module and light module that molding block is connected, wherein, it is described to light module, for what is provided according to control module
Test pictures are controlled and common electric voltage to be tested control liquid crystal panel shows test pictures under all common electric voltages to be tested；Institute
Flicker degree acquisition module is stated, test pictures are shown for obtaining liquid crystal panel liquid crystal panel under each common electric voltage to be tested
When all flicker angle value, and all flicker angle value of detecting are supplied to control module；The control module, for lighting
Module provides test pictures and multiple common electric voltages to be tested；And the liquid crystal panel of flicker degree acquisition module transmission is received every
All flicker angle value under one common electric voltage to be tested during liquid crystal panel display test pictures, and obtained in all flicker angle value
The corresponding voltage to be measured of wherein minimum flicker angle value is taken as most suitable voltage.
Further, the common electric voltage to be tested is increased or reduced change according to the first constant changing value.
Further, the control module further comprises：First common electric voltage submodule to be tested, for described to be measured
Try to produce multiple first common electric voltages to be tested in the measurement range of common electric voltage；The multiple first common electric voltage to be tested is pressed
Increased or reduced according to the second constant changing value；Second changing value is more than first changing value；Voltage output
Module, for providing first common electric voltage to be measured, the liquid detected until flicker degree acquisition module to lighting module successively
Crystal panel shows that minimum flicker angle value occurs in flicker angle value during test pictures；Reference range determination sub-module, for according to sudden strain of a muscle
The reference range of bright angle value most suitable voltage described in the corresponding first common electric voltage determination to be measured of minimum flicker angle value；Second
Common electric voltage submodule to be tested, for producing multiple second common electric voltages to be tested according to the reference range；The voltage
Output sub-module, which is additionally operable to the described second common electric voltage to be tested being supplied to as voltage to be tested, lights module.
Further, the flicker degree acquisition module further comprises：Test pictures shooting submodule, for liquid crystal panel
The test pictures shown under different voltages to be tested carry out shooting the multiframe test picture obtained under each common electric voltage to be tested
Face；Angle value calculating sub module is flashed, the multiframe test pictures for each common electric voltage to be tested according to shooting calculate liquid crystal
Flicker angle value of the panel under each common electric voltage to be tested.
Further, the flicker angle value calculating sub module further comprises：Shooting unit, it is to be tested for shooting each
Multiple frame test pictures under common electric voltage；Statistic unit, is surveyed for counting each frame under each common electric voltage to be tested
The brightness value of picture is tried, so as to obtain multiple brightness values of multiframe test pictures, and multiple briliancy of multiframe test pictures are determined
Maximum brightness value and minimum brightness value in value；Determining unit, states maximum brightness value for basis and minimum brightness value is determined often
Liquid crystal panel shows the flicker angle value of test pictures under one common electric voltage to be tested.
Compared with prior art, the present invention can bring at least one of following beneficial effect：
1st, the present invention shows the flicker angle value of test pictures by automatically obtaining liquid crystal panel, and is determined according to flicker angle value
The most suitable voltage of common electric voltage, the most suitable voltage for efficiently solving existing liquid crystal panel is, by adjusting voltage manually, and to lead to
Cross human eye to observe, there is the defect that consuming time length, error are larger, measuring accuracy is not high.
2nd, when the flicker angle value when present invention is to liquid crystal panel display test pictures is measured, in same public affairs to be tested
Multiframe test pictures are obtained under common voltage, liquid crystal under a common electric voltage to be tested is determined according to the brightness value of multiframe test pictures
Flicker angle value during Display panel test pictures, has been effectively ensured the accuracy of measurement.
3rd, the present invention first determines the reference range of most suitable voltage when carrying out most suitable voltage measurement in measurement range, then leads to
The reference range for crossing most suitable voltage is accurately measured, and reduces measurement point, efficiently reduces the time of measurement, further increases survey
Amount efficiency.
Brief description of the drawings
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, the present invention is given furtherly
It is bright.
Fig. 1 is the timing diagram of the electrode voltage of theoretic liquid crystal panel；
Fig. 2 is the timing diagram of the electrode voltage of the liquid crystal panel during actual driving；
Fig. 3 is the electrode voltage timing diagram of revised liquid crystal panel；
Fig. 4 is a kind of step schematic diagram of the most suitable common electric voltage measuring method embodiment one of liquid crystal panel of the invention；
Fig. 5 is a kind of step schematic diagram of the most suitable common electric voltage measuring method embodiment two of liquid crystal panel of the invention；
Fig. 6-Fig. 8 surveys for a kind of flicker angle value of the most suitable common electric voltage measuring method embodiment two of liquid crystal panel of the invention
Measure result schematic diagram；
Fig. 9 is a kind of step schematic diagram of the most suitable common electric voltage measuring method embodiment three of liquid crystal panel of the invention；
Figure 10 ties for a kind of brightness value measurement of the most suitable common electric voltage measuring method embodiment three of liquid crystal panel of the invention
Fruit schematic diagram；
Figure 11 is a kind of modular structure block diagram of the most suitable common electric voltage measurement apparatus embodiment one of liquid crystal panel of the invention；
Figure 12 is a kind of modular structure block diagram of the most suitable common electric voltage measurement apparatus embodiment two of liquid crystal panel of the invention.
Drawing reference numeral explanation：
100th, control module, the 110, first common electric voltage submodule to be tested, 120, voltage output submodule, 130, benchmark
Range determination submodule, the 140, second common electric voltage submodule to be tested, 200, flicker degree acquisition module, 210, test pictures clap
Take the photograph submodule, 220, flicker angle value calculating sub module, 221, statistic unit, 222, determining unit, 300, light module.
Embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
The embodiment of the present invention.It should be evident that drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing, and obtain other embodiments.
To make only to schematically show part related to the present invention in simplified form, each figure, they are not represented
Its as product practical structures.In addition, so that simplified form is readily appreciated, there is identical structure or function in some figures
Part, only symbolically depicts one of those, or has only marked one of those.Herein, " one " is not only represented
" only this ", can also represent the situation of " more than one ".
Fig. 1 is the timing diagram of the electrode voltage of theoretic liquid crystal panel.As shown in figure 1, liquid crystal panel is normal in theory
Show electrode voltage is source electrode voltage (now common electrode voltage is 0) during lighting, now positive polarity pressure difference and negative pole
Property pressure difference is equal, will not produce panel flash phenomenon.But due to the presence meeting of induced voltage during actual liquid crystal panel driving
Positive polarity pressure difference is caused to produce difference with negative polarity pressure difference, Fig. 2 is the electrode voltage of the liquid crystal panel during actual driving
Timing diagram, as shown in Fig. 2 the difference of positive polarity pressure difference and negative polarity pressure difference can cause to produce flicker during the normal lighting of panel it is existing
As.
For this reason, it may be necessary to make positive-negative polarity pressure difference equal by correcting common electrode voltage, revised common electrode voltage
As most suitable voltage, and liquid crystal panel is written into, liquid crystal panel is visible by naked eyes flicker.
Fig. 3 is the electrode voltage timing diagram of revised liquid crystal panel.As shown in figure 3, revised common electric voltage causes
Positive polarity pressure difference is equal with negative polarity pressure difference, solves the problem of producing flicker when panel is lighted.
The existing regulative mode to common electric voltage is the flicker degree that personnel visually inspect liquid crystal panel, according to subjective judgement again
Manual Regulate signal generator, makes generator output voltage.One is that human eye visually and manually adjusts the accuracy of voltage not
Height, next to that regulation causes to expend overlong time personnel manually, reduces the efficiency of test.
Therefore, flicker angle value and basis that liquid crystal panel shows test pictures can be automatically obtained the invention provides a kind of
Flicker angle value determines the measuring method of common electric voltage.
Fig. 4 is a kind of step schematic diagram of the most suitable common electric voltage measuring method embodiment one of liquid crystal panel of the invention.Such as
Shown in Fig. 4, a kind of most suitable common electric voltage measuring method of liquid crystal panel comprises the following steps S100-S400.
Step S100, control module provide test pictures and all common electric voltages to be tested to module is lighted.
Step S200, light test pictures and all common electric voltage control liquid to be tested that module provides according to control module
Crystal panel shows test pictures under all common electric voltages to be tested.
Step S300, flicker degree acquisition module obtain liquid crystal panel liquid crystal panel under each common electric voltage to be tested and shown
Show all flicker angle value during test pictures, and all flicker angle value of detecting are supplied to control module.
Step S400, control module receive the liquid crystal panel of flicker degree acquisition module transmission in each common electrical to be tested
All flicker angle value when liquid crystal panel shows test pictures are depressed, and wherein minimum flicker degree is obtained in all flicker angle value
It is worth corresponding voltage to be measured as most suitable voltage.
The embodiment of the present invention one shows the flicker angle value of test pictures by automatically obtaining liquid crystal panel, and according to flicker degree
Value determines the most suitable voltage of common electric voltage, and the most suitable voltage for efficiently solving existing liquid crystal panel is by adjusting electricity manually
Pressure, and observed by human eye, there is the defect that consuming time length, error are larger, measuring accuracy is not high so that common electric voltage is adjusted
Examination is more accurate, and simple to operate, cost is relatively low, and improves the debugging efficiency of common electric voltage.
It is preferred that, the common electric voltage to be tested is increased or reduced change according to the first constant changing value.
Fig. 5 is a kind of step schematic diagram of the most suitable common electric voltage measuring method embodiment two of liquid crystal panel of the invention.This
Inventive embodiments two are improved on the basis of embodiment one, and the step S100 in embodiment one is improved, such as Fig. 5
Shown, step S100 further comprises the steps S101-S104 in the embodiment of the present invention two.
S101, the multiple first common electric voltages to be tested are produced in the measurement range of the common electric voltage to be tested；It is described
Multiple first common electric voltages to be tested are increased or reduced according to the second constant changing value；Second changing value is more than institute
State the first changing value.
In order to further reduce the measurement range of common electric voltage to obtain in the reference range of common electric voltage, above-mentioned steps
The multiple first common electric voltages to be tested are produced in measurement range, the first common electric voltage to be tested is according to the second constant changing value
Increased or reduced, wherein second changing value is more than first changing value.Illustrate, it is assumed that common electrical to be tested
The measurement range of pressure is -0.2V~0.2V, is increased according to the first changing value 0.02V, then embodiment one needs to measure 21 values, and
The present embodiment produce the first common electric voltage to be tested, increased according to the second changing value 0.1V, then embodiment two need survey-
0.2nd, -0.1,0,0.1,0.2 this five values.
S102, first common electric voltage to be measured is provided to lighting module successively, until flicker degree acquisition module is detected
Liquid crystal panel show that minimum flicker angle value occurs in flicker angle value during test pictures.
It is S103, most suitable according to flicker angle value determines for corresponding first common electric voltage to be measured of minimum flicker angle value
The reference range of voltage.
In order to confirm reference range as early as possible, reduce unnecessary process of measurement to improve measurement efficiency, above-mentioned steps S102
Successively to module the first common electric voltage to be measured of offer is lighted, when detecting flicker angle value and minimum flicker angle value occur, i.e. stopping is carried
For the remaining first common electric voltage to be measured.Fig. 6-Fig. 8 is respectively the flicker angle value measurement result figure of the embodiment of the present invention two.As schemed
Shown in 6, when the first voltage to be measured does not also provide completion, there is minimum flicker angle value, then first after 0.1V is to be measured
Common electric voltage is without measurement, you can the reference range of most suitable voltage is determined according to the first common electric voltage currently surveyed.If occurring
The minimum that do not detected in measurement range such as Fig. 7 and as shown in Figure 8 flashes angle value, then can directly judge to exceed benchmark model
Enclose, without carrying out next step.
S104, produce multiple second common electric voltages to be tested according to the reference range, and by the described second public affairs to be tested
Common voltage is used as voltage to be tested.
The measurement range of most suitable voltage is greatly reduced by above-mentioned steps S103, it is determined that the benchmark model of most suitable voltage
Enclose, further each magnitude of voltage in reference range is measured.The multiple second public affairs to be tested are generated in step S104
Common voltage, the second common electric voltage to be tested can be the value according to constant change value changes, may not be, do not limit specifically
It is fixed, can be according to actual conditions sets itself.The present embodiment two reduces the value of measurement due to first having carried out a range shorter,
Therefore time of measuring has been saved, has improved measurement efficiency.
Fig. 9 is a kind of step schematic diagram of the most suitable common electric voltage measuring method embodiment three of liquid crystal panel of the invention.This
Inventive embodiments three are improved on the basis of embodiment one, and to the step S300 in embodiment one, " flicker degree obtains mould
Block obtains all flicker angle value of the liquid crystal panel under each common electric voltage to be tested during liquid crystal panel display test pictures " enter
Row is improved, as shown in figure 9, step S300 further comprises the steps S301-S302 in the embodiment of the present invention three.
S310, the test pictures that repeatedly shooting liquid crystal panel is shown under each voltage to be tested, obtain each to be tested
Multiframe test pictures under common electric voltage.
The present embodiment shoots liquid crystal panel by camera continuous several times in above-mentioned steps and shown under some voltage to be tested
The test pictures shown, so as to obtain multiframe test pictures, such as the frequency of source electrode voltage for 40HZ, i.e. a cycle when
Between be 25ms, here for the accuracy for ensureing measurement flicker angle value, shooting time is expanded as into 3 cycles during actual measurement,
That is 75ms, sets the time interval of camera shooting as 8.3ms, then 10 brightness values is measured in 75ms.
S320, according to the multiframe test pictures of each common electric voltage to be tested of shooting liquid crystal panel is calculated each to be measured
Try the flicker angle value under common electric voltage.
Above-mentioned steps further comprise step S321-S322：
S321, each frame test pictures counted under each common electric voltage to be tested brightness value, so as to obtain multiframe
Multiple brightness values of test pictures, and determine the maximum brightness value in multiple brightness values of multiframe test pictures and minimum briliancy
Value.
S322, basis state maximum brightness value and minimum brightness value determines that liquid crystal panel shows under each common electric voltage to be tested
Show the flicker angle value of test pictures.
Specifically, flashing angle value by intensity calculation in the present embodiment three, that is, flash angle value=briliancy maximum-briliancy most
Small value.Figure 10 shows for a kind of brightness value measurement result of the most suitable common electric voltage measuring method embodiment three of liquid crystal panel of the invention
It is intended to.As shown in Figure 10, briliancy maximum is 56.952, and briliancy minimum value is 33.951, then flashes angle value=56.952-
33.951=23.001 (unit cd/m2)。
It should be noted that for foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as a series of
Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement because
According to the present invention, some steps can be carried out sequentially or simultaneously using other.Secondly, those skilled in the art should also know
Know, embodiment described in this description belongs to preferred embodiment, involved action and module is not necessarily of the invention
It is necessary.
Figure 11 is a kind of modular structure block diagram of the most suitable common electric voltage measurement apparatus embodiment one of liquid crystal panel of the invention.
As shown in figure 11, the most suitable common electric voltage measurement apparatus of a kind of liquid crystal panel, including：Control module 100, with the control module
100 connected flicker degree acquisition modules 200 and module 300 is lighted, wherein, it is described to light module 300, for according to control module
The 100 test pictures controls provided and common electric voltage to be tested control liquid crystal panel show survey under all common electric voltages to be tested
Try picture；The flicker degree acquisition module 200, for obtaining liquid crystal panel liquid crystal panel under each common electric voltage to be tested
All flicker angle value during test pictures are shown, and all flicker angle value of detecting are supplied to control module 100；The control
Module 100, for providing test pictures and multiple common electric voltages to be tested to lighting module 300；And receive flicker degree acquisition
The liquid crystal panel that module 200 is sent liquid crystal panel under each common electric voltage to be tested shows all flickers during test pictures
Angle value, and the corresponding voltage to be measured of wherein minimum flicker angle value is obtained as most suitable voltage in all flicker angle value.
Specifically, the present invention light module 300 can be it is various can light liquid crystal panel, and can be to liquid crystal panel
The part of input test picture.
The flicker degree acquisition module 200 of the present invention can be camera or other any equipment with shoot function.
The control module 100 of the present invention preferably may include programmable control chip, can provide to be tested by calculation and programming
Common electric voltage, compared to can be more accurately controlled for relatively manual regulation voltage, improves measuring accuracy.The PLC technology
Chip can be connected with the various control devices such as computer, microprocessor.
The present invention shows the flicker angle value of test pictures by automatically obtaining liquid crystal panel, and determines public affairs according to flicker angle value
The most suitable voltage of common voltage, the most suitable voltage for efficiently solving existing liquid crystal panel is, by adjusting voltage manually, and to pass through
Human eye is observed, and there is the defect that consuming time length, error are larger, measuring accuracy is not high so that common electric voltage debugging is more accurate
Really, simple to operate, cost is relatively low, and improves the debugging efficiency of common electric voltage.
It is preferred that, the common electric voltage to be tested is increased or reduced change according to the first constant changing value.
Figure 12 is a kind of modular structure block diagram of the most suitable common electric voltage measurement apparatus embodiment two of liquid crystal panel of the invention.
The embodiment of the present invention two is improved on the basis of embodiment one, as shown in figure 12, and the control module 100 is further wrapped
Include：First common electric voltage submodule 110 to be tested, for producing multiple in the measurement range of the common electric voltage to be tested
One common electric voltage to be tested；The multiple first common electric voltage to be tested is increased or subtracted according to the second constant changing value
It is small；Second changing value is more than first changing value；Voltage output submodule 120, for carrying successively to lighting module 300
For the described first common electric voltage to be measured, when liquid crystal panel that flicker degree acquisition module 200 is detected shows test pictures
Flash angle value and minimum flicker angle value occur；Reference range determination sub-module 130, for being minimum flicker angle value according to flicker angle value
The reference range of most suitable voltage described in the corresponding first common electric voltage determination to be measured；Second common electric voltage submodule to be tested
140, for producing multiple second common electric voltages to be tested according to the reference range；The voltage output submodule 120 is also used
Module 300 is lighted in the described second common electric voltage to be tested is supplied to as voltage to be tested.
In order to further reduce the measurement range of common electric voltage to obtain the reference range of common electric voltage, in measurement range
It is interior to produce multiple first common electric voltages to be tested, the first common electric voltage to be tested increased according to the second constant changing value or
Reduce, wherein second changing value is more than first changing value.Meanwhile, in order to confirm reference range as early as possible, reduction need not
The process of measurement wanted is to improve measurement efficiency, and voltage output submodule 120 is to be measured public to the offer first of module 300 is lighted successively
Voltage, stops providing remaining first common electric voltage to be measured when detecting flicker angle value and minimum flicker angle value occur.
The illustrated in greater detail of above-described embodiment can be found in a kind of most suitable common electric voltage measurement side of liquid crystal panel of the invention
Method part, no longer illustrates herein.The present embodiment two reduces the value of measurement, therefore section due to first having carried out a range shorter
About time of measuring, improves measurement efficiency.
As shown in figure 12, the flicker degree acquisition module 200 further comprises：Test pictures shooting submodule 210, is used for
The test pictures that liquid crystal panel is shown under different voltages to be tested are repeatedly shot, obtain many under each common electric voltage to be tested
Frame test pictures；Angle value calculating sub module 220 is flashed, the multiframe for each common electric voltage to be tested according to shooting tests picture
Face calculates flicker angle value of the liquid crystal panel under each common electric voltage to be tested.
Wherein, the flicker angle value calculating sub module 220 further comprises：Statistic unit 221, is treated for counting each
The brightness value for each frame test pictures tested under common electric voltage, so that multiple brightness values of multiframe test pictures are obtained, and really
Determine the maximum brightness value and minimum brightness value in multiple brightness values of multiframe test pictures；Determining unit 222, is stated most for basis
Big brightness value and minimum brightness value determine the flicker angle value of liquid crystal panel display test pictures under each common electric voltage to be tested.
The present embodiment shoots liquid crystal panel at certain in above-mentioned steps by the continuous several times of test pictures shooting submodule 210
The test pictures shown under individual voltage to be tested, so as to obtain multiframe test pictures, and pass through the brightness value of multiframe test pictures
Flicker angle value is calculated, that is, flashes angle value=briliancy maximum-briliancy minimum value.The illustrated in greater detail of above-described embodiment can be found in
A kind of most suitable common electric voltage measuring method part of liquid crystal panel of the present invention, no longer illustrates herein.
The contents such as information exchange, implementation procedure in the present apparatus between each module and above method embodiment are based on same structure
Think, particular content can be found in the narration in the inventive method embodiment, and here is omitted.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not have the portion being described in detail in some embodiment
Point, it may refer to the associated description of other embodiment.
, can be by another way in several embodiments provided herein, it should be understood that disclosed device
Realize.For example, device embodiment described above is only schematical, such as the division of described unit is only one kind
Division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or can
To be integrated into another system, or some features can be ignored, or not perform.It is another, it is shown or discussed each other
Coupling direct-coupling or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of device or unit,
Can be electrical or other forms.
In addition, each functional module in each embodiment of the invention can be integrated in a processing unit, can also
Modules individualism, can also two or more modules it is integrated in a unit.Above-mentioned integrated unit was both
It can be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can for personal computer, database or network equipment etc.) perform each embodiment methods described of the invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
It should be noted that above-described embodiment can independent assortment as needed.Described above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, is not departing from the premise of the principle of the invention
Under, multiple improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. the most suitable common electric voltage measuring method of a kind of liquid crystal panel, it is characterised in that including step：
Control module provides test pictures and all common electric voltages to be tested to module is lighted；
Test pictures and all common electric voltage control liquid crystal panels to be tested that module provides according to control module are lighted all
Test pictures are shown under common electric voltage to be tested；
Flicker degree acquisition module acquisition liquid crystal panel is under each common electric voltage to be tested during liquid crystal panel display test pictures
All flicker angle value, and all flicker angle value of detecting are supplied to control module；
The liquid crystal panel that control module reception flicker degree acquisition module is sent liquid crystal panel under each common electric voltage to be tested
All flicker angle value during test pictures are shown, and it is corresponding to be measured to obtain in all flicker angle value wherein minimum flicker angle value
Voltage is used as most suitable voltage.
2. the most suitable common electric voltage measuring method of liquid crystal panel as claimed in claim 1, it is characterised in that the public affairs to be tested
Common voltage is increased or reduced change according to the first constant changing value.
3. the most suitable common electric voltage measuring method of liquid crystal panel as claimed in claim 2, it is characterised in that the step " control
Molding block provides all common electric voltages to be tested to module is lighted " further comprise step：
The multiple first common electric voltages to be tested are produced in the measurement range of the common electric voltage to be tested；The multiple first treats
Test common electric voltage is increased or reduced according to the second constant changing value；Second changing value is more than the described first change
Value；
First common electric voltage to be measured, the liquid crystal panel detected until flicker degree acquisition module are provided to lighting module successively
Show that minimum flicker angle value occurs in flicker angle value during test pictures；
The base of most suitable voltage according to flicker angle value determines for corresponding first common electric voltage to be measured of minimum flicker angle value
Quasi- scope；
Multiple second common electric voltages to be tested are produced according to the reference range, and using the described second common electric voltage to be tested as
Voltage to be tested.
4. the most suitable common electric voltage measuring method of liquid crystal panel as claimed in claim 1, it is characterised in that the step " is obtained
Take all flicker angle value of the liquid crystal panel under each common electric voltage to be tested during liquid crystal panel display test pictures " further
Including step：
The test pictures that liquid crystal panel is shown under each voltage to be tested are repeatedly shot, are obtained under each common electric voltage to be tested
Multiframe test pictures；
Liquid crystal panel is calculated in each common electrical to be tested according to the multiframe test pictures of each common electric voltage to be tested of shooting
The flicker angle value of pressure.
5. the most suitable common electric voltage measuring method of liquid crystal panel as claimed in claim 4, it is characterised in that the step " root
Liquid crystal panel is calculated under each common electric voltage to be tested according to the multiframe test pictures of each common electric voltage to be tested of shooting
Flicker angle value " further comprises step：
The brightness value of each frame test pictures under each common electric voltage to be tested is counted, so as to obtain multiframe test pictures
Multiple brightness values, and determine the maximum brightness value in multiple brightness values of multiframe test pictures and minimum brightness value；
Liquid crystal panel display test picture under each common electric voltage to be tested is determined according to maximum brightness value and minimum brightness value is stated
The flicker angle value in face.
6. a kind of most suitable common electric voltage measurement apparatus of liquid crystal panel, it is characterised in that including：Control module, with the control
Flicker degree acquisition module and light module that module is connected, wherein,
It is described to light module, control liquid crystal surface for the test pictures control provided according to control module and common electric voltage to be tested
Plate shows test pictures under all common electric voltages to be tested；
The flicker degree acquisition module, is surveyed for obtaining liquid crystal panel liquid crystal panel display under each common electric voltage to be tested
All flicker angle value during picture are tried, and all flicker angle value of detecting are supplied to control module；
The control module, for providing test pictures and multiple common electric voltages to be tested to lighting module；And receive flicker
The liquid crystal panel for spending acquisition module transmission is all during liquid crystal panel display test pictures under each common electric voltage to be tested
Angle value is flashed, and the corresponding voltage to be measured of wherein minimum flicker angle value is obtained as most suitable voltage in all flicker angle value.
7. the most suitable common electric voltage measurement apparatus of liquid crystal panel as claimed in claim 1, it is characterised in that the public affairs to be tested
Common voltage is increased or reduced change according to the first constant changing value.
8. the most suitable common electric voltage measurement apparatus of liquid crystal panel as claimed in claim 7, it is characterised in that the control module
Further comprise：
First common electric voltage submodule to be tested, for producing multiple first in the measurement range of the common electric voltage to be tested
Common electric voltage to be tested；The multiple first common electric voltage to be tested is increased or reduced according to the second constant changing value；
Second changing value is more than first changing value；
Voltage output submodule, for successively to module offer first common electric voltage to be measured is lighted, until flicker degree is obtained
The liquid crystal panel that module is detected shows that minimum flicker angle value occurs in flicker angle value during test pictures；
Reference range determination sub-module, for being corresponding first common electrical to be measured of minimum flicker angle value according to flicker angle value
The reference range of most suitable voltage described in pressure determination；
Second common electric voltage submodule to be tested, for producing multiple second common electric voltages to be tested according to the reference range；
The voltage output submodule is additionally operable to the described second common electric voltage to be tested being supplied to as voltage to be tested and lighted
Module.
9. the most suitable common electric voltage measurement apparatus of liquid crystal panel as claimed in claim 6, it is characterised in that the flicker degree is obtained
Modulus block further comprises：
Test pictures shooting submodule, for repeatedly shooting the test pictures that liquid crystal panel is shown under different voltages to be tested,
Obtain the multiframe test pictures under each common electric voltage to be tested；
Angle value calculating sub module is flashed, the multiframe test pictures for each common electric voltage to be tested according to shooting calculate liquid crystal
Flicker angle value of the panel under each common electric voltage to be tested.
10. the most suitable common electric voltage measurement apparatus of liquid crystal panel as claimed in claim 9, it is characterised in that the flicker degree
Value calculating sub module further comprises：
Statistic unit, the brightness value for counting each frame test pictures under each common electric voltage to be tested, so as to obtain
Multiple brightness values of multiframe test pictures, and determine the maximum brightness value in multiple brightness values of multiframe test pictures and minimum brightness
Angle value；
Determining unit, states maximum brightness value for basis and minimum brightness value determines liquid crystal surface under each common electric voltage to be tested
Plate shows the flicker angle value of test pictures.
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| CN201710391211.6A CN106990570A (en) | 2017-05-27 | 2017-05-27 | The most suitable common electric voltage measuring method and device of liquid crystal panel |
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| CN201710391211.6A CN106990570A (en) | 2017-05-27 | 2017-05-27 | The most suitable common electric voltage measuring method and device of liquid crystal panel |
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| 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 |
| CN114203125A (en) * | 2021-12-07 | 2022-03-18 | 昆山龙腾光电股份有限公司 | Method and device for acquiring common voltage and computer storage medium |
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