CN107221273A - Display screen flashes method of testing - Google Patents
Display screen flashes method of testing Download PDFInfo
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- CN107221273A CN107221273A CN201710539300.0A CN201710539300A CN107221273A CN 107221273 A CN107221273 A CN 107221273A CN 201710539300 A CN201710539300 A CN 201710539300A CN 107221273 A CN107221273 A CN 107221273A
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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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Abstract
Method of testing is flashed the present invention relates to a kind of display screen, including：Obtain and multiple common electric voltage values are included in default common electric voltage array, the default common electric voltage array；At least one described common electric voltage value of frequency acquisition highest is obtained in the common electric voltage array as anticipation value；Line flicker test is entered to display screen according to the anticipation value, the flicker value of the display screen is obtained；The flicker value is contrasted with the first predetermined threshold value and the second predetermined threshold value respectively, the corresponding common electric voltage value of minimum flicker value is obtained, and the common electric voltage value is write to the driving chip of the display screen.The display screen flicker method of testing can reduce the time for finding optimal common electric voltage value, can improve production efficiency, reduce product cost.
Description
Technical field
The present invention relates to display screen testing field, more particularly to a kind of display screen flicker method of testing.
Background technology
As the ratio shared by the display screen of mobile phone and flat board is increasing so that the display effect of display screen is received more
Carry out more attention.In order to pursue preferable experience effect, user wishes that the visual angle of display screen is wider, and contrast is higher, screen
Become apparent from, picture FLICKER (flicker) is smaller, due to when film flicker becomes big, then the clear of display screen can be directly affected
Degree.And when film flicker is sufficiently small, then such as one static picture of picture that display screen is presented, Consumer's Experience sense is preferable.Cause
This, FLICKER turns into an index received much concern at present.
The display of display screen picture, is by liquid in LCD (Liquid Crystal Display, abbreviation liquid crystal display)
Brilliant upset is achieved light transmission.And the transmitance of light is relevant with the angle that liquid crystal is overturn, the upset that LCD passes through liquid crystal
Angle realizes that the gradation effect of a picture is represented.I.e. when showing some tableaux, then liquid crystal can be held turned over angle
It is constant.And in order to prevent liquid crystal to be polarized, it is achieved that the electric field of liquid crystal upset is not DC electric field, but during positive-negative half-cycle
Between identical, amplitude identical AC field so that liquid crystal is in an AC field, keep a fixed flip angle
Degree, so as to control display FLICKER as small as possible.
Usual LCD completes the scanning of a frame every time, then electric field can be converted once, but in a practical situation, turn over liquid crystal
The positive negative electric field of gyration, can not generally ensure just the same, and when flip angle of the liquid crystal in the two electric fields is different,
FLICKER is just generated.In order that the FLICKER of minimum can be obtained by obtaining each display screen, each present module factory all can
To each display screen of production, FLICKER OTP (One-time Password, also referred to as dynamic password) burning is carried out, is led to
The setting of change VCOM voltages (common electric voltage) register is crossed, each most suitable VCOM voltages of display screen are found, and by this most
Good to set, burning is cured to inside driving IC chip.Display screen shows the value of burning before calling every time, is shown with obtaining this
The optimal FLICKER of display screen.
Each display screen is required for doing such burning, the recordable time of each display screen, each current module factory when
Between be in 18~25S, wherein 12~15S or so time is during optimal VCOM magnitudes of voltage are found.However, seeking value
Scope sets too small, then optimum value can not be found by being likely to result in；And seek value scope and set excessive, then it can cause to seek the value time
It is elongated；And it is adaptive seek value scope, easily there is BUG, cause to seek value extremely.And in the prior art no matter using split plot design,
Simulation curve and circulation look for value etc. to seek value mode, and it is all difficult to shorten recordable time.
The content of the invention
Based on this, it is necessary to flash in method of testing the asking long for optimal common electric voltage value hunting time for display screen
Inscribe and flash method of testing there is provided the display screen of time that can be reduced and find optimal common electric voltage value a kind of.
A kind of display screen flashes method of testing, comprises the following steps：
Obtain and multiple common electric voltage values are included in default common electric voltage array, the default common electric voltage array；
At least one described common electric voltage value of frequency acquisition highest is obtained in the common electric voltage array as anticipation value；
Line flicker test is entered to display screen according to the anticipation value, the flicker value of the display screen is obtained；
The flicker value is contrasted with the first predetermined threshold value and the second predetermined threshold value respectively；
It is when the flicker value is less than or equal to first predetermined threshold value, then the flicker value is corresponding described public
Magnitude of voltage is write on the driving chip of the display screen；
When the flicker value is more than first predetermined threshold value and during less than or equal to second predetermined threshold value, then basis
The corresponding relation of default flicker value and common electric voltage value, obtains multiple flicker values less than or equal to first predetermined threshold value
Corresponding common electric voltage value, carries out the flicker to the display screen according to the common electric voltage value and tests, obtain minimum flicker
It is worth the corresponding common electric voltage value, and the common electric voltage value is write to the driving chip of the display screen；
When the flicker value is more than second predetermined threshold value, then according to each in the default common electric voltage array
The common electric voltage value carries out the flicker to the display screen respectively and tested, and obtains the corresponding common electrical of minimum flicker value
Pressure value, and the common electric voltage value is write to the driving chip of the display screen.
In one of the embodiments, the step of acquisition default common electric voltage array includes：
Screen flicker test is carried out to display screen respectively based on some common electric voltage values, multiple flicker values are obtained；
Obtain corresponding multiple common electric voltage values that flicker value is less than or equal to twice of first predetermined threshold value, root
The common electric voltage array is generated according to multiple common electric voltage values.
In one of the embodiments, described obtain produces at least one institute of frequency highest in the common electric voltage array
State common electric voltage value also includes as after the step of anticipation value：
The quantity of common electric voltage value described in frequency highest is detected, when the quantity of common electric voltage value described in frequency highest is
At one, then an acquired common electric voltage value is write on the driving chip of the display screen.
In one of the embodiments, described obtain produces at least one institute of frequency highest in the common electric voltage array
Stating the step of common electric voltage value is as anticipation value also includes：
When the quantity of common electric voltage value described in frequency highest is multiple, with the multiple common electric voltages of frequency highest
The average value of value is used as the anticipation value.
In one of the embodiments, it is described when the flicker value is less than or equal to first predetermined threshold value, then will
Also include after step on the driving chip of the flicker value corresponding common electric voltage value write-in display screen：
The corresponding common electric voltage value of the flicker value is stored in the default common electric voltage array.
In one of the embodiments, it is described the common electric voltage value is write to the display screen driving chip the step of
Also include afterwards：
The common electric voltage value is stored in the default common electric voltage array.
In one of the embodiments, the display screen flicker method of testing also includes：Described in being more than when the flicker value
First predetermined threshold value and during less than or equal to second predetermined threshold value, then obtain described from the default common electric voltage array
The span of common electric voltage value, the corresponding relation based on the span and default flicker value and common electric voltage value,
Multiple twice less than or equal to first predetermined threshold value of the corresponding common electric voltage value of flicker value is obtained, according to the common electrical
Pressure value carries out the flicker to the display screen and tested, and obtains the corresponding common electric voltage value of minimum flicker value, and will be described
Common electric voltage value writes the driving chip of the display screen.
In one of the embodiments, the display screen flicker method of testing also includes：Described in being more than when the flicker value
First predetermined threshold value and during less than or equal to second predetermined threshold value, then according to pair of default flicker value and common electric voltage value
It should be related to, two symmetrical common electric voltage values corresponding with the flicker value be obtained, respectively to described two symmetrical common electric voltages
Value plus-minus magnitude of voltage, obtains the corresponding common electric voltage value of minimum flicker value, and common electric voltage value write-in is described aobvious
The driving chip of display screen.
In one of the embodiments, the display screen flicker method of testing also includes：Described in being more than when the flicker value
During the second predetermined threshold value, then according to the order for being stored in the default common electric voltage array, sequentially from the default common electrical
Array is pressed to obtain the common electric voltage value, carrying out the flicker to the display screen according to the common electric voltage value one by one tests,
Until minimum flicker value is obtained, by the driving core of the minimum flicker value corresponding common electric voltage value write-in display screen
Piece.
In one of the embodiments, the display screen flicker method of testing also includes：It is stored in the default common electrical
Press the order of the common electric voltage value of array more forward, then the common electrical obtained from the default common electric voltage array
The order of pressure value is more forward.
Above-mentioned display screen flashes method of testing, by the default common electrical of the acquisition comprising multiple common electric voltage values
Press in array, obtain generation one or several common electric voltage values of frequency highest and be used as anticipation value.So that finding most
The scope of good common electric voltage is effectively reduced.And line flicker test is entered to display screen according to the anticipation value, obtain described aobvious
The flicker value of display screen, by contrast obtaining minimum sudden strain of a muscle to the flicker value and the first predetermined threshold value and the second predetermined threshold value
Common electric voltage value corresponding to bright value.So that the time that detection obtains optimal common electric voltage value is shortened, so that effectively
Detection efficiency is improved, the time cost of the screen flicker of test display screen is reduced.And this method is universal, can be used
In most of display screen projects, to reduce recordable time, production efficiency is improved, product cost is reduced.
Brief description of the drawings
Fig. 1 flashes test flow chart for the display screen of an embodiment；
Fig. 2 flashes test flow chart for the display screen of another embodiment；
Fig. 3 is the scintigram of default flicker value-common electric voltage value of an embodiment；
Fig. 4 flashes test flow chart for the traditional display screen of an embodiment.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the better embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make to understand more the disclosure
Plus it is thorough comprehensive.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or can also have element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
" right side ", " top ", " bottom ", " bottom ", " top " and similar statement for illustrative purposes only, are not offered as being only
One embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The implication that technical staff is generally understood that is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " including one or more
The arbitrary and all combination of related Listed Items.
For example, a kind of display screen flicker method of testing, comprises the following steps：Default common electric voltage array is obtained, it is described
Multiple common electric voltage values are included in default common electric voltage array；Obtain in the common electric voltage array frequency acquisition highest extremely
A few common electric voltage value is used as anticipation value；Line flicker test is entered to display screen according to the anticipation value, obtains described aobvious
The flicker value of display screen；The flicker value is contrasted with the first predetermined threshold value and the second predetermined threshold value；When the flicker value
During less than or equal to first predetermined threshold value, then the corresponding common electric voltage value of the flicker value is write into the display screen
Driving chip on；When the flicker value is more than first predetermined threshold value and is less than or equal to second predetermined threshold value,
Then according to the corresponding relation of default flicker value and common electric voltage value, obtain multiple less than or equal to first predetermined threshold value
The corresponding common electric voltage value of flicker value, carries out the flicker to the display screen according to the common electric voltage value and tests, obtain small
In or equal to first predetermined threshold value the corresponding common electric voltage value of the flicker value, and the common electric voltage value is write
Enter the driving chip of the display screen；When the flicker value is more than second predetermined threshold value, then according to the common electric voltage
Each common electric voltage value in array carries out the flicker to the display screen respectively and tested, and obtains and is less than or equal to described the
The corresponding common electric voltage value of the flicker value of one predetermined threshold value, and the common electric voltage value is write into the display screen
Driving chip.
For example, as shown in figure 1, a kind of display screen flicker method of testing, comprises the following steps：
Step 110：Obtain and multiple common electricals are included in default common electric voltage array, the default common electric voltage array
Pressure value.
The optimal common electric voltage value constantly searched out in actual production to each product is recorded, Ran Houfang
In the array for entering the customized work of array size.For example, array size is 1~100, when test is obtained to the 101st product
A new optimal common electric voltage value is obtained, then using the principle of first in first out, the 1st optimal common electric voltage value is taken out, is put into
The 101st new optimal common electric voltage value, so that customized array turns into an effective dynamic array, is commonly called as work
Array.And default common electric voltage array is to refer to include the dynamic array of multiple common electric voltage values.
Step 120：At least one described common electric voltage value of frequency acquisition highest in the common electric voltage array is obtained to make
For anticipation value.
Due to the display screen of same batch, the setting value difference of its optimal common electric voltage value is simultaneously little, therefore described
There may be the higher common electric voltage value of multiple frequencies in default common electric voltage array, its possible one common electric voltage of identical
Value, it is also possible to several multiple common electric voltage values of frequency identical.When carrying out the flicker test of next product, then it is taken out
In a frequency highest common electric voltage value be used as the common electric voltage value of the product, as described anticipation value, that is to say, that anticipation
It is worth for the most possible optimal common electric voltage value of next display screen.
Specifically, it is determined that during the anticipation value, for example, the quantity of common electric voltage value described in detection frequency highest, when
When the quantity of common electric voltage value described in frequency highest is one, then an acquired common electric voltage value is write described
On the driving chip of display screen.That is, frequency of occurrences highest common electric voltage value only has in default common electric voltage array
One, for example, in 1~100 array, the frequency highest that 20v occurs, i.e., using 20v as display screen anticipation value.For example, working as
When the quantity of common electric voltage value described in frequency highest is multiple, with the average value of the multiple common electric voltage values of frequency highest
It is used as the anticipation value.That is, in default common electric voltage array frequency of occurrences highest common electric voltage value more than one
When, for example, in 1~100 array, 20v and 30v occurs 19 times, the number of times that other common electric voltage values occur does not reach
19 times, therefore 20v and 30v average value 25v is taken as the anticipation value of display screen.
Step 130：Line flicker test is entered to display screen according to the anticipation value, the flicker value of the display screen is obtained.
By detecting frequency of occurrences highest common electric voltage value in default common electric voltage array, obtain being used to detect the
The anticipation value of 101 display screens, and use the anticipation value to carry out the flicker test of the display screen, corresponding flicker value is obtained, is led to
Cross with being contrasted with reference to flicker value, thus judge the anticipation value whether can as the display screen optimal common electric voltage
Value.Wherein determined with reference to flicker value by different customer requirements, i.e., different clients are different for the requirement of flicker value, i.e., according to not
Requirement with client to flicker value, requires that flicker value, as flicker value is referred to, is somebody's turn to do as long as the flicker value that test is obtained is no more than using it
With reference to flicker value be represent obtained by common electric voltage value be the display screen optimal common electric voltage value.It is understood that
The flicker value of customer requirement, i.e., be highest flicker value with reference to flicker value, i.e., the flicker value being worth to according to anticipation exceeds the highest
Flicker value, the then anticipation value obtained cannot function as the optimal common electric voltage value of the display screen, it is necessary to carry out optimal common electrical again
The searching of pressure value.
Step 140：The flicker value is contrasted with the first predetermined threshold value and the second predetermined threshold value, as shown in Figure 2.
I.e. when carrying out the searching of the optimal common electric voltage value of display screen, the progress segmentation of above-mentioned highest flicker value can be sentenced
It is disconnected, i.e., carry out seeking value in the first predetermined threshold value and the second preset threshold range.For example, highest flicker value is represented with F (max),
Wherein described first predetermined threshold value is 50%F (max), and second predetermined threshold value is 150%F (max).I.e. by inputting anticipation
When value enters line flicker test to display screen, obtained flicker value is contrasted with 50%F (max) and 150%F (max), judges pre-
Sentence whether value can turn into optimal common electric voltage value.
Step 150：It is when the flicker value is less than or equal to first predetermined threshold value, then the flicker value is corresponding
The common electric voltage value is write on the driving chip of the display screen.
It is understood that being less than or equal to 50%F (max) when being worth to flicker value by anticipation, that is to say, that test
Obtained flicker value is not above highest flicker value F (max), so can directly judge that the anticipation value can be used as the display screen
Optimal common electric voltage value, that is to say, that the anticipation value is the minimum flicker value.So as to as next aobvious
The common electric voltage value of display screen and be written on the driving chip of display screen, will the common electric voltage value be burned onto the driving of display screen
On chip.Meanwhile, for example, the corresponding common electric voltage value of the flicker value is stored in into the default common electric voltage array.
A value is removed i.e. in default common electric voltage array, the optimal common electric voltage value obtained is write, continues default with this
Common electric voltage array be used as effective common electric voltage array, carry out value test, find optimal common electric voltage value.
Step 160：When the flicker value is more than first predetermined threshold value and less than or equal to second predetermined threshold value
When, then according to the corresponding relation of default flicker value and common electric voltage value, obtain multiple less than or equal to the described first default threshold
The corresponding common electric voltage value of flicker value that 2 times of value, carries out the flicker to the display screen according to the common electric voltage value and tests,
The corresponding common electric voltage value of minimum flicker value is obtained, and the common electric voltage value is write to the driving core of the display screen
Piece.
The anticipation value taken out from default common electric voltage array, when carrying out the 101st display screen test, obtained sudden strain of a muscle
Bright value is in the range of 50%F (max) and 150%F (max).It can not so determine whether the anticipation value can be by as display
The optimal common electric voltage value of screen.Now, carry out judging to divide by using the homologous thread figure of default flicker value-common electric voltage value
Analysis, the curve belongs to figure in the prior art on flicker value and common electric voltage relation, can be by testing obtained flicker value pair
Should ground find and meet less than flicker value is referred to, i.e., less than maximum flicker value common electric voltage scope, within the range further
Enter line flicker test, to obtain the corresponding common electric voltage of minimum flicker value, you can be used as the optimal common electric voltage of tested display screen.
That is, in an array for being less than the default common electric voltage array, i.e., a small range finds out the optimal of display screen
Common electric voltage value.It is specific as follows.
For example, when the flicker value is more than first predetermined threshold value and is less than or equal to second predetermined threshold value,
According to the corresponding relation of default flicker value and common electric voltage value, obtained and described first from the default common electric voltage array
The span of the predetermined threshold value common electric voltage corresponding with second predetermined threshold value, based on each in the span
Common electric voltage value carries out the flicker to the display screen and tested, and obtains multiple less than or equal to 2 times of first predetermined threshold value
The corresponding common electric voltage value of flicker value, according to the common electric voltage value to the display screen carry out it is described flicker test, obtain
The corresponding common electric voltage value of minimum flicker value, and the common electric voltage value is write to the driving chip of the display screen.
As shown in figure 3, the span obtained using the corresponding relation of default flicker value and common electric voltage value is referred to
, corresponding with 50%F (max) common electric voltage and 150%F (max) are corresponding public in default common electric voltage array
A common electric voltage scope between voltage, that is to say, that the span refers to that is less than the default common electric voltage
The small array of array, value mode is sought in small array according to traditional, i.e., respectively 1 a pair should in the range of each common electrical
Pressure is worth into line flicker test, until searching out the common electric voltage value corresponding to minimum flicker value, is used as optimal common electric voltage value.
For example, default common electric voltage array range be 1~100, then the span refer to 1~100 scope find 20~
Common electric voltage value in the range of 50.Enter line flicker test to each common electric voltage of a small range respectively, obtain minimum flicker value.
For example, when the flicker value is more than first predetermined threshold value and is less than or equal to second predetermined threshold value,
Then according to the corresponding relation of default flicker value and common electric voltage value, obtain two corresponding with the flicker value it is symmetrically public
Described two symmetrical common electric voltage values are added and subtracted magnitude of voltage by magnitude of voltage respectively, obtain the corresponding common electrical of minimum flicker value
Pressure value, and the common electric voltage value is write to the driving chip of the display screen.
Please continue to refer to Fig. 3, analysis judgement is carried out using default flicker value-common electric voltage value curve map, the curve is
The curve of similar V-type.One example is that the corresponding relation of the default flicker value and common electric voltage value is V-type curve, to institute
State V-type curve and carry out sampling test, obtain the V-type curve of different samples.It is each according to the V-type curve acquisition of the different samples
The minimum point of curve.The wherein sample V-type curve difference very little of different batches.Wherein minimum point represents minimum flicker value.As long as
It can determine that the minimum point just can correspond to the optimal common electric voltage value for searching out each sample more conveniently.
It is understood that described two symmetrical common electric voltage values are to represent the monosymmetric value of minimum point.Two institutes
State the shoulder breadth that symmetrical common electric voltage is effective value, that is to say, that plus-minus magnitude of voltage is carried out in the range of the shoulder breadth.For example,
The magnitudes of voltage such as 3,5 or 8 are added and subtracted to described two symmetrical common electric voltage values respectively so that monosymmetric common electric voltage value
Finally coincide together, then the magnitude of voltage coincided together is the voltage at curve minimum point, that is, minimum flicker value pair
The common electric voltage value answered.So as to more quickly search out the corresponding common electric voltage value of the minimum flicker value of tested display screen.
Step 170：When the flicker value is more than second predetermined threshold value, then according in the common electric voltage array
Each common electric voltage value carries out the flicker to the display screen respectively and tested, and obtains minimum flicker value corresponding described public
Magnitude of voltage, and the common electric voltage value is write to the driving chip of the display screen.
I.e. when the flicker value is more than 150%F (max), then belong to the flicker value of serious non-compliance requirement, now, need
To carry out finding optimal common electric voltage value using traditional value mode of seeking.And traditional common electric voltage value seek value mode be
Respectively enter line flicker test in the default common electric voltage array successively, to obtain the corresponding common electric voltage of minimum flicker value
Value.
For example, when the flicker value is more than second predetermined threshold value, then according to the deposit default common electric voltage
The order of array, sequentially obtains the common electric voltage value, one by one according to the common electrical from the default common electric voltage array
Pressure value carries out the flicker to the display screen and tested, until obtain minimum flicker value, by the corresponding institute of the minimum flicker value
State the driving chip that common electric voltage value writes the display screen.For example, the default common electric voltage array is 1~100, then need
Will be within this range according to the allocation order of array, for example, using the principle of first in first out, preferentially to being first put into the public affairs of array
Common voltage value is tested, and then each common electric voltage of selection successively enters line flicker test, until obtaining minimum flicker value.
For example, the order of the common electric voltage value of the deposit default common electric voltage array is more forward, then from the default public affairs
The order for the common electric voltage value that common voltage array is obtained is more forward.I.e. default common electric voltage array is preferentially arranged into
Common electric voltage value preferentially enter line flicker test, the common electric voltage value after also just preferentially being tested.
For example, as shown in figure 4, when obtaining optimal common electric voltage value, it is necessary to display screen flicker test be carried out again, if obtaining
The display effect arrived is good, then exports OK instructions, then optimal common electric voltage value is burned onto in the driving chip of display screen, together
When the tested display screen OK instructions of output, and change next display screen and enter line flicker test.If it is not good that test obtains display effect
When, then NO instructions are exported, bad products are picked out.It is effective when that can not obtain simultaneously for traditional flicker method of testing
During common electric voltage, directly correspondence display screen is picked out.The display screen picked out is bad display screen.
Above-mentioned display screen flashes method of testing, by the default common electrical of the acquisition comprising multiple common electric voltage values
Press in array, obtain generation one or several common electric voltage values of frequency highest and be used as anticipation value.So that finding most
The scope of good common electric voltage is effectively reduced.And line flicker test is entered to display screen according to the anticipation value, obtain described aobvious
The flicker value of display screen, by contrast obtaining minimum sudden strain of a muscle to the flicker value and the first predetermined threshold value and the second predetermined threshold value
Common electric voltage value corresponding to bright value.So that the time that detection obtains optimal common electric voltage value is shortened, it is generally possible to
Shorten time needed for whole OTP within 10s, so as to greatly reduce OTP recordable time, be particularly suitable for a large amount of productions
Manufacture is used.So it was reduced to from 18~25 seconds within 10 seconds, effectively saves time cost, so as to effectively increases detection effect
Rate, reduces the time cost of the screen flicker of test display screen.And this method is universal, it can operate with mostly several
Mesh, to reduce recordable time, improves efficiency, reduces product cost.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and it describes more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that coming for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of display screen flashes method of testing, it is characterised in that including：
Obtain and multiple common electric voltage values are included in default common electric voltage array, the default common electric voltage array；
At least one described common electric voltage value of frequency acquisition highest is obtained in the common electric voltage array as anticipation value；
Line flicker test is entered to display screen according to the anticipation value, the flicker value of the display screen is obtained；
The flicker value is contrasted with the first predetermined threshold value and the second predetermined threshold value respectively；
When the flicker value is less than or equal to first predetermined threshold value, then by the corresponding common electric voltage of the flicker value
On the driving chip of the value write-in display screen；
When the flicker value is more than first predetermined threshold value and is less than or equal to second predetermined threshold value, then according to default
Flicker value and common electric voltage value corresponding relation, obtain multiple flicker values less than or equal to first predetermined threshold value correspondingly
Common electric voltage value, the flicker is carried out to the display screen according to the common electric voltage value and tested, minimum flicker value pair is obtained
The common electric voltage value answered, and the common electric voltage value is write to the driving chip of the display screen；
When the flicker value is more than second predetermined threshold value, then according to each in the default common electric voltage array
Common electric voltage value carries out the flicker to the display screen respectively and tested, and obtains the corresponding common electric voltage of minimum flicker value
Value, and the common electric voltage value is write to the driving chip of the display screen.
2. display screen according to claim 1 flashes method of testing, it is characterised in that the default common electric voltage of acquisition
The step of array, includes：
Screen flicker test is carried out to display screen respectively based on some common electric voltage values, multiple flicker values are obtained；
Corresponding multiple common electric voltage values that flicker value is less than or equal to twice of first predetermined threshold value are obtained, according to many
The individual common electric voltage value generates the common electric voltage array.
3. display screen according to claim 1 flashes method of testing, it is characterised in that the acquisition common electric voltage number
At least one described common electric voltage value of frequency highest is produced in group also to be included as after the step of anticipation value：
The quantity of common electric voltage value described in frequency highest is detected, when the quantity of common electric voltage value described in frequency highest is one
When, then an acquired common electric voltage value is write on the driving chip of the display screen.
4. display screen according to claim 1 flashes method of testing, it is characterised in that the acquisition common electric voltage number
The step of frequency highest at least one described common electric voltage value is as anticipation value is produced in group also to be included：
When the quantity of common electric voltage value described in frequency highest is multiple, with the multiple common electric voltage values of frequency highest
Average value is used as the anticipation value.
5. display screen according to claim 1 flashes method of testing, it is characterised in that it is described when the flicker value is less than or
During equal to first predetermined threshold value, then the corresponding common electric voltage value of the flicker value is write to the driving of the display screen
Also include after step on chip：
The corresponding common electric voltage value of the flicker value is stored in the default common electric voltage array.
6. display screen according to claim 1 flashes method of testing, it is characterised in that described to write the common electric voltage value
Also include after the step of entering the driving chip of the display screen：
The common electric voltage value is stored in the default common electric voltage array.
7. display screen according to claim 1 flashes method of testing, it is characterised in that also include：
When the flicker value is more than first predetermined threshold value and is less than or equal to second predetermined threshold value, then from described pre-
If common electric voltage array obtain the span of the common electric voltage value, based on the span and default flicker value
With the corresponding relation of common electric voltage value, multiple twice less than or equal to first predetermined threshold value of corresponding public affairs of flicker value are obtained
Common voltage value, carries out the flicker to the display screen according to the common electric voltage value and tests, obtain minimum flicker value corresponding
The common electric voltage value, and the common electric voltage value is write to the driving chip of the display screen.
8. display screen according to claim 1 flashes method of testing, it is characterised in that also include：
When the flicker value is more than first predetermined threshold value and is less than or equal to second predetermined threshold value, then according to default
Flicker value and common electric voltage value corresponding relation, obtain two symmetrical common electric voltage values corresponding with the flicker value, divide
It is other that magnitude of voltage is added and subtracted to described two symmetrical common electric voltage values, the corresponding common electric voltage value of minimum flicker value is obtained, and will
The common electric voltage value writes the driving core of the display screen.
9. display screen according to claim 1 flashes method of testing, it is characterised in that also include：When the flicker value is big
When second predetermined threshold value, then according to the order for being stored in the default common electric voltage array, sequentially from described default
Common electric voltage array obtains the common electric voltage value, carries out the flicker to the display screen according to the common electric voltage value one by one
Test, until minimum flicker value is obtained, by the minimum flicker value corresponding common electric voltage value write-in display screen
Driving chip.
10. display screen according to claim 9 flashes method of testing, it is characterised in that also include：
The order for being stored in the common electric voltage value of the default common electric voltage array is more forward, then from described default public
The order for the common electric voltage value that voltage array is obtained is more forward.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172188A (en) * | 2018-01-05 | 2018-06-15 | 上海闻泰电子科技有限公司 | Method for burn-recording, device and the computer readable storage medium of display screen common voltage |
| CN108877724A (en) * | 2018-08-21 | 2018-11-23 | 信利半导体有限公司 | A kind of LCD driving circuit for supporting a variety of frame per second to show |
| CN110890074A (en) * | 2019-10-30 | 2020-03-17 | 华显光电技术（惠州）有限公司 | Display screen public voltage adjusting method and display screen |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010197928A (en) * | 2009-02-27 | 2010-09-09 | Epson Imaging Devices Corp | Liquid crystal display device |
| CN104181719B (en) * | 2014-09-17 | 2016-11-09 | 深圳市华星光电技术有限公司 | The method of adjustable liquid crystal display panel scintillation |
| CN105589226B (en) * | 2016-01-27 | 2018-12-11 | 江西联星显示创新体有限公司 | Obtain the adjustment method and device of the best FLK value of liquid crystal display |
| CN106448583A (en) * | 2016-08-16 | 2017-02-22 | 深圳天珑无线科技有限公司 | Liquid crystal display screen Vcom value adjusting method and apparatus, and liquid crystal display |
| CN106448520A (en) * | 2016-08-16 | 2017-02-22 | 深圳天珑无线科技有限公司 | Regulating method and device of Vcom value of liquid crystal display screen and liquid crystal display screen |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108172188A (en) * | 2018-01-05 | 2018-06-15 | 上海闻泰电子科技有限公司 | Method for burn-recording, device and the computer readable storage medium of display screen common voltage |
| CN108877724A (en) * | 2018-08-21 | 2018-11-23 | 信利半导体有限公司 | A kind of LCD driving circuit for supporting a variety of frame per second to show |
| 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 |
| CN110890074A (en) * | 2019-10-30 | 2020-03-17 | 华显光电技术（惠州）有限公司 | Display screen public voltage adjusting method and display screen |
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