CN106596068B - Method and device for detecting brightness uniformity of display screen - Google Patents
Method and device for detecting brightness uniformity of display screen Download PDFInfo
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- CN106596068B CN106596068B CN201611183155.9A CN201611183155A CN106596068B CN 106596068 B CN106596068 B CN 106596068B CN 201611183155 A CN201611183155 A CN 201611183155A CN 106596068 B CN106596068 B CN 106596068B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The embodiment of the invention discloses a method and a device for detecting the brightness uniformity of a display screen. The method comprises the following steps: displaying at least two frames of test pictures corresponding to at least two target test points in a display screen to be tested; acquiring a brightness value corresponding to a target test point contained in each frame of test picture; and calculating the brightness uniformity of the display screen to be tested according to the brightness value corresponding to the target test point. By the technical scheme, the accuracy of the detection result can be improved, the detection time can be shortened, and the productivity can be improved.
Description
Technical field
The present embodiments relate to the detection method of electronic technology field more particularly to a kind of brightness of display screen uniformity and
Device.
Background technique
With the development of electronic technology, especially the demand of electronic display is continuously increased, how improves electronic display
The production test efficiency of display screen becomes major manufacturer's urgent problem to be solved.
In order to evaluate the quality of a display screen, in the production test procedure of display screen, it usually needs detection display screen
Luminance uniformity.The scheme of currently used detection luminance uniformity are as follows: as shown in Figure 1, firstly, being conveyed to display screen 1 white
Field signal, then, successively mobile luminance test instrument manually, to each test point (i.e. the first test point 11, the second test point 12,
Third test point 13, the 4th test point 14, the 5th test point 15, the 6th test point 16, the 7th test point 17, the 8th test point 18
With the 9th test point 19) it is manuallyd locate respectively, and the brightness value of each test point on display screen 1 is tested, finally, with each test
The brightness minimum of point obtains luminance uniformity divided by the brightness value of the first test point 11.
Existing technical solution is because needing manually to position each test point, therefore, inevitably there is positioning
Difference, so as to cause the not high problem of testing result inaccuracy, data reproducibility, meanwhile, manual mobile luminance test instrument was both
It is time-consuming and laborious, so that detection time is long, reduce production efficiency.
Summary of the invention
The embodiment of the present invention provides a kind of detection method and device of brightness of display screen uniformity, to improve testing result
Accuracy shortens detection time, improves production efficiency.
In a first aspect, the embodiment of the invention provides a kind of detection methods of brightness of display screen uniformity, comprising:
The corresponding at least two frame test pictures of 1 target detection points are shown in display screen to be measured；
Obtain the corresponding brightness value of target detection point that every frame test pictures are included；
The luminance uniformity of the display screen to be measured is calculated according to the corresponding brightness value of the target detection point.
Further, described that the corresponding at least two frames test picture of 1 target detection points is shown in display screen to be measured
Face includes:
Corresponding first test pictures of first object test point are shown in display screen to be measured；
The corresponding next test picture of next target detection point is shown in display screen to be measured according to test pictures switching command
Face.
Further, the first object test point are as follows: display screen center test point.
Further, the brightness for calculating the display screen to be measured according to the corresponding brightness value of the target detection point is equal
Evenness includes:
Obtain the minimum brightness in addition to the first object test point in the corresponding brightness value of other each target detection points
Value；
The minimum brightness value is obtained into the display screen to be measured divided by the corresponding brightness value of the first object test point
Luminance uniformity.
Further, target detection point is white in the test pictures, and the region except target detection point is black.
Second aspect, the embodiment of the invention also provides a kind of detection device of brightness of display screen uniformity, the device packets
It includes:
Test pictures display module, for showing 1 target detection points corresponding at least two in display screen to be measured
Frame test pictures；
Brightness value obtains module, the corresponding brightness value of target detection point for being included for obtaining every frame test pictures；
Luminance uniformity computing module, for calculating the display to be measured according to the corresponding brightness value of the target detection point
The luminance uniformity of screen.
Further, the test pictures display module, comprising:
First test pictures display sub-module, for showing first object test point corresponding first in display screen to be measured
Test pictures；
Next test pictures display sub-module, it is next for being shown in display screen to be measured according to test pictures switching command
The corresponding next test pictures of target detection point.
Further, the first object test point are as follows: display screen center test point.
Further, the luminance uniformity computing module, comprising:
Minimum brightness value acquisition submodule, for obtaining other each target detection points in addition to the first object test point
Minimum brightness value in corresponding brightness value；
Luminance uniformity computational submodule, for the minimum brightness value is corresponding divided by the first object test point
Brightness value obtains the luminance uniformity of the display screen to be measured.
Further, target detection point is white in the test pictures, and the region except target detection point is black.
The embodiment of the present invention is by showing test pictures in display screen to be measured, because being convenient to obtain without positioning
The brightness value for the target detection point that test pictures are included, finally calculates luminance uniformity, solves in the prior art because of people
Work manuallys locate testing result inaccuracy, the problem that detection time is long and productivity is low caused by test point, has reached and has mentioned
The accuracy of high detection result shortens detection time, proposes large-duty effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of each test point position on display screen in the prior art；
Fig. 2 is the structural schematic diagram of detection system hardware setting provided in an embodiment of the present invention；
Fig. 3 is a kind of flow diagram of the detection method for brightness of display screen uniformity that the embodiment of the present invention one provides；
Fig. 4 a is the schematic diagram provided in an embodiment of the present invention that the first test pictures are shown in display screen；
Fig. 4 b is the schematic diagram provided in an embodiment of the present invention that the second test pictures are shown in display screen；
Fig. 4 c is the schematic diagram provided in an embodiment of the present invention that third test pictures are shown in display screen；
Fig. 4 d is the schematic diagram provided in an embodiment of the present invention that the 4th test pictures are shown in display screen；
Fig. 4 e is the schematic diagram provided in an embodiment of the present invention that the 5th test pictures are shown in display screen；
Fig. 4 f is the schematic diagram provided in an embodiment of the present invention that the 6th test pictures are shown in display screen；
Fig. 4 g is the schematic diagram provided in an embodiment of the present invention that the 7th test pictures are shown in display screen；
Fig. 4 h is the schematic diagram provided in an embodiment of the present invention that the 8th test pictures are shown in display screen；
Fig. 4 i is the schematic diagram provided in an embodiment of the present invention that the 9th test pictures are shown in display screen；
Fig. 5 is a kind of flow diagram of the detection method of brightness of display screen uniformity provided by Embodiment 2 of the present invention；
Fig. 6 is a kind of flow diagram of the detection method for brightness of display screen uniformity that the embodiment of the present invention three provides；
Fig. 7 is a kind of flow diagram of the detection device for brightness of display screen uniformity that the embodiment of the present invention four provides；
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention rather than limiting the invention.It also should be noted that in order to just
Only the parts related to the present invention are shown in description, attached drawing rather than entire infrastructure.
Embodiment one
Technical solution provided in an embodiment of the present invention may be used in detection system as shown in Figure 2.The detection system packet
Luminance test instrument 220 is included, entire test process is completed under standard dark room conditions, and luminance test instrument 220 is using contactless right
To being fixedly installed at 1 meter of the front of display screen 210 to be measured, wherein luminance test instrument 220 is for detecting display screen to be measured
The brightness value of target detection point on 210.
Fig. 3 is a kind of flow diagram of the detection method for brightness of display screen uniformity that the embodiment of the present invention one provides.
This method is applicable to the case where detection brightness of display screen uniformity, and this method can be filled by the detection of the brightness of display screen uniformity
It sets to execute, which can be made of hardware and/or software, and can generally be integrated in TV, computer and all comprising independent
In the intelligent terminal of display screen.It specifically includes as follows:
S310, the corresponding at least two frame test pictures of 1 target detection points are shown in display screen to be measured.
Wherein, the target detection point of different location is respectively arranged in different test pictures, i.e., different target detections
Point corresponds to different test pictures.In addition, the frame number of test pictures, that is, the setting of the position of target detection point and number is not
Be it is unalterable, can be different according to the difference that screen size to be measured or display quality require, size is bigger or shows
Quality requirements are higher, then the frame number of required test pictures is more.Preferably, target detection point is white, target in test pictures
Region except test point is black.The good of the corresponding different test pictures of different target test point is shown in display screen to be measured
Be in, can in test pictures specific position occur target detection point carry out brightness value test, avoid and test
Situation in journey because of testing result inaccuracy caused by poor location occurs, while detection data and testing result are had
Repeat it is realisation, to further improve the accuracy and reliability of testing result.
Preferably, the number of target detection point is set as 9, and corresponding test pictures are 9 frames.
Illustratively, as shown in fig. 4 a, the first test pictures 41 shown in display screen 4 to be measured, including first are indicated
Target detection point 411 and the first black region 412, wherein first object test point 411 is located at the centre bit of display screen 4 to be measured
It sets, to be white, the region except first object test point 411 is the first black region 412；As shown in Figure 4 b, it indicates to be measured
The second test pictures 42 shown in display screen 4, including the second target detection point 421 and the second black region 422, wherein the
2 target detection points 421 are located at the upper left corner of display screen 4 to be measured, and for white, the region except the second target detection point 421 is the
Two black regions 422；As illustrated in fig. 4 c, the third test pictures 43 shown in display screen 4 to be measured, including third target are indicated
Test point 431 and third black region 432, wherein the center that third target detection point 431 is located at display screen 4 to be measured is upper
Edge, to be white, the region except third target detection point 431 is third black region 432；As shown in figure 4d, indicate to
Survey the 4th test pictures 44 shown in display screen 4, including the 4th target detection point 441 and the 4th black region 442, wherein
4th target detection point 441 is located at the upper right corner of display screen 4 to be measured, and to be white, the region except the 4th target detection point 441 is
4th black region 442；As shown in fig 4e, the 5th test pictures 45 shown in display screen 4 to be measured, including the 5th mesh are indicated
Mapping pilot 451 and the 5th black region 452, wherein the center that the 5th target detection point 451 is located at display screen 4 to be measured keeps left
Side edge, to be white, the region except the 5th target detection point 451 is the 5th black region 452；As shown in fig. 4f, it indicates
The 6th test pictures 46 shown in display screen 4 to be measured, including the 6th target detection point 461 and the 6th black region 462,
In, the center that the 6th target detection point 461 is located at display screen 4 to be measured is kept right side edge, for white, the 6th target detection point 461
Except region be the 6th black region 462；As shown in figure 4g, the 7th test pictures shown in display screen 4 to be measured are indicated
47, including the 7th target detection point 471 and the 7th black region 472, wherein the 7th target detection point 471 is located at display to be measured
The lower left corner of screen 4, to be white, the region except the 7th target detection point 471 is the 7th black region 472；As shown in figure 4h, table
Show the 8th test pictures 48 shown in display screen 4 to be measured, including the 8th target detection point 481 and the 8th black region 482,
Wherein, the 8th target detection point 481 is located at the center of display screen 4 to be measured side edge on the lower, for white, the 8th target detection point
Region except 481 is the 8th black region 482；Shown in Fig. 4 i, the 9th test pictures shown in display screen 4 to be measured are indicated
49, including the 9th target detection point 491 and the 9th black region 492, wherein the 9th target detection point 491 is located at display to be measured
The lower right corner of screen 4, to be white, the region except the 9th target detection point 491 is the 9th black region 492.
S320, the corresponding brightness value of target detection point that every frame test pictures are included is obtained.
Wherein, the corresponding brightness value of target detection point can be measured by luminance detection device, and luminance detection device preferably can be with
It is luminance test instrument.Illustratively, as shown in fig. 4 a, it when the first test pictures 41 are shown in display screen 4 to be measured, utilizes
Luminance test instrument measures and obtains the brightness value of first object test point 411；As shown in Figure 4 b, it is shown when in display screen 4 to be measured
Be the second test pictures 42 when, measure and obtain the brightness value of the second target detection point 421, using luminance test instrument with such
It pushes away.
Specifically, the purpose for obtaining the corresponding brightness value of target detection point of different direction is, it is to be measured for subsequent calculating
The luminance uniformity of display screen provides authentic data.Further, since target detection point included in same frame test pictures
Position is fixed and invariable, therefore the corresponding luminance data of target detection point will not occur because measurement experiment is repeated several times
Change, to improve the accuracy of testing result.Meanwhile it not needing mobile luminance detection device and can measure and obtain target
The brightness value of test point shortens detection time and improves production efficiency.
S330, the luminance uniformity that display screen to be measured is calculated according to the corresponding brightness value of target detection point.
Specifically, luminance uniformity, that is, brightness uniformity coefficient, refers to and approves liquid crystal display (Liquid Crystal
Display, LCD) picture full white mode (Full White Pattern) when can embody uniform white, positioned
Set each bright variable quantity of measurement.Because the brightness of display screen uniformity is the most bright difference value with most dark-part, institute in display screen
With after getting the corresponding brightness value of target detection point that every frame test pictures are included, according to all target detection points pair
The peak in the brightness value corresponding with all target detection points of the minimum in brightness value answered, can be calculated by difference
To luminance uniformity.Wherein, the brightness uniformity angle value being calculated illustrates that the luminance uniformity of display screen to be measured is got over closer to 1
It is good；Conversely, then illustrating that the luminance uniformity of display screen is poorer.
The technical solution of the present embodiment, by showing test pictures in display screen to be measured, because without positioning can be square
Just the brightness value for obtaining the target detection point that test pictures are included, finally calculates luminance uniformity, solves existing skill
Because of testing result inaccuracy, the problem that detection time is long and productivity is low caused by manually assignment test point in art,
Reach and has improved the accuracy of testing result, shorten detection time, propose large-duty effect.
Embodiment two
Fig. 5 is a kind of flow diagram of the detection method of the brightness of display screen uniformity provided by Embodiment 2 of the present invention.
The present embodiment is optimized based on above-described embodiment, provides the detection method of the preferred brightness of display screen uniformity, tool
Body is will to show that the corresponding at least two frame test pictures of 1 target detection points advanced optimize in display screen to be measured
For, comprising: corresponding first test pictures of first object test point are shown in display screen to be measured；Referred to according to test pictures switching
Order shows the corresponding next test pictures of next target detection point in display screen to be measured.
S510, corresponding first test pictures of first object test point are shown in display screen to be measured.
Specifically, first object test point is set by the highest test point of brightness value in target detection point, and the first mesh
The position of mapping pilot can require according to the size or display quality of display screen to be measured and be set.Preferably, first object is surveyed
Pilot are as follows: display screen center test point.It is, in general, that the most bright place of display screen is generally the part in picture center, it is most dark
Place is generally the edge of picture, therefore when luminance uniformity is higher, the consistency in picture center to edge is higher, works as brightness
The uniformity is lower, and the different situation that becomes clear of picture is also more serious.Select display screen center test point for first object test point
It is advantageous in that, the brightness value of the brightness minimum of the target detection point of other positions and display screen center test point is made into ratio
Compared with can preferably judge luminance uniformity, improve the accuracy of testing result.
Illustratively, as shown in fig. 4 a, show that first object test point 411 corresponding first is surveyed in display screen 4 to be measured
Try picture 41.
S520, the corresponding next survey of next target detection point is shown in display screen to be measured according to test pictures switching command
Try picture.
It is used to switch display screen picture by what display screen remote controler issued specifically, test pictures switching command can be
Instruction, is also possible to the instruction according to the test pictures in pre-set screen switching frequency error factor display screen to be measured.Example
Property, as shown in fig. 4 a, corresponding first test pictures of first object test point 411 are shown in current display screen 4 to be measured
41, when receiving test pictures switching command, as shown in Figure 4 b, display screen 4 to be measured is switched to the second target detection point 421 of display
Corresponding second test pictures 42, and so on.
S530, the corresponding brightness value of target detection point that every frame test pictures are included is obtained.
S540, the luminance uniformity that display screen to be measured is calculated according to the corresponding brightness value of target detection point.
The technical solution of the present embodiment, by showing first object test point corresponding first first in display screen to be measured
Test pictures, then show the corresponding next test pictures of next target detection point, it is surveyed because being convenient to obtain without positioning
The brightness value for the target detection point that examination picture is included, finally calculates luminance uniformity, solves in the prior art because artificial
The problem that testing result is inaccurate, detection time is long and productivity is low caused by test point is manuallyd locate, raising has been reached
The accuracy of testing result shortens detection time, proposes large-duty effect.
Embodiment three
Fig. 6 is a kind of flow diagram of the detection method of the brightness of display screen uniformity provided by Embodiment 2 of the present invention.
The present embodiment is optimized based on the various embodiments described above, provides the detection method of the preferred brightness of display screen uniformity,
Specifically, the luminance uniformity for calculating display screen to be measured according to the corresponding brightness value of target detection point is advanced optimized as packet
It includes: obtaining the minimum brightness value in addition to first object test point in the corresponding brightness value of other each target detection points；It will be minimum
Brightness value obtains the luminance uniformity of display screen to be measured divided by the corresponding brightness value of first object test point.
S610, corresponding first test pictures of first object test point are shown in display screen to be measured.
S620, the corresponding next survey of next target detection point is shown in display screen to be measured according to test pictures switching command
Try picture.
S630, the corresponding brightness value of target detection point that every frame test pictures are included is obtained.
S640, minimum brightness in addition to first object test point in the corresponding brightness value of other each target detection points is obtained
Value.
Specifically, obtaining minimum bright in the corresponding brightness value of other each target detection points in addition to first object test point
Angle value obtains minimum therein, is that is, by comparing the size of the corresponding brightness value of target detection point each on display screen to be measured
The subsequent luminance uniformity for calculating display screen provides necessary parameter.
S650, the brightness that minimum brightness value is obtained display screen to be measured divided by the corresponding brightness value of first object test point are equal
Evenness.
Preferably, first object test point is display screen center test point.
Specifically, calculating the brightness of display screen to be measured using minimum brightness value brightness value corresponding with first object test point
The principle of the uniformity is, when human eye viewing display screen it is first noted that be display screen center, turned to and shielded by central point
If switching to high brightness point by low-light level point when curtain surrounding, human eye feels that variation will not be very big, and if being switched to by high brightness point
Low-light level point, the variation that human eye is felt it is obvious that from human eye vision experience angle, can then be examined using this calculation method
The brightness of display screen uniformity for meeting human eye vision habit is measured, to improve the accuracy of testing result, and in display screen
User's visual experience can be improved in production process.
The technical solution of the present embodiment, by showing first object test point corresponding first first in display screen to be measured
Test pictures, then show the corresponding next test pictures of next target detection point, and with the minimum brightness value got divided by
The brightness value of 1 target detection point obtains luminance uniformity, and solve causes due to manually assignment test point in the prior art
Testing result inaccuracy, the problem that detection time is long and productivity is low, reached and improved the accuracy of testing result, shorten
Detection time proposes large-duty effect.
Example IV
Fig. 7 is a kind of flow diagram of the detection device for brightness of display screen uniformity that the embodiment of the present invention four provides.
The device is applicable to the case where detection brightness of display screen uniformity, which can be made of hardware and/or software, and generally may be used
It is integrated in TV, computer and all intelligent terminals comprising separate display screens.With reference to Fig. 7, the brightness of display screen uniformity
Detection device include: test pictures display module 710, brightness value obtain module 720, luminance uniformity computing module 730, below
Each module is specifically described.
Test pictures display module 710, for showing that 1 target detection points are corresponding extremely in display screen to be measured
Few two frame test pictures；
Brightness value obtains module 720, the corresponding brightness value of target detection point for being included for obtaining every frame test pictures；
Luminance uniformity computing module 730, it is described to be measured for being calculated according to the corresponding brightness value of the target detection point
The luminance uniformity of display screen.
Optionally, test pictures display module 710, comprising:
First test pictures display sub-module, for showing first object test point corresponding first in display screen to be measured
Test pictures；
Next test pictures display sub-module, it is next for being shown in display screen to be measured according to test pictures switching command
The corresponding next test pictures of target detection point.
Optionally, the first object test point are as follows: display screen center test point.
Optionally, luminance uniformity computing module 730, comprising:
Minimum brightness value acquisition submodule, for obtaining other each target detection points in addition to the first object test point
Minimum brightness value in corresponding brightness value；
Luminance uniformity computational submodule, for the minimum brightness value is corresponding divided by the first object test point
Brightness value obtains the luminance uniformity of the display screen to be measured.
Optionally, target detection point is white in the test pictures, and the region except target detection point is black.
Method provided by any embodiment of the invention can be performed in the said goods, has the corresponding functional module of execution method
And beneficial effect.
Note that the above is only a better embodiment of the present invention and the applied technical principle.It will be appreciated by those skilled in the art that
The invention is not limited to the specific embodiments described herein, be able to carry out for a person skilled in the art it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.Therefore, although being carried out by above embodiments to the present invention
It is described in further detail, but the present invention is not limited to the above embodiments only, without departing from the inventive concept, also
It may include more other equivalent embodiments, and the scope of the invention is determined by the scope of the appended claims.
Claims (8)
1. a kind of detection method of the brightness of display screen uniformity characterized by comprising
The corresponding at least two frame test pictures of 1 target detection points are shown in display screen to be measured；
Obtain the corresponding brightness value of target detection point that every frame test pictures are included；
The luminance uniformity of the display screen to be measured is calculated according to the corresponding brightness value of the target detection point；
Wherein, described to show that the corresponding at least two frame test pictures of 1 target detection points include: in display screen to be measured
Corresponding first test pictures of first object test point are shown in display screen to be measured；
The corresponding next test pictures of next target detection point are shown in display screen to be measured according to test pictures switching command.
2. the method according to claim 1, wherein the first object test point are as follows: the test of display screen center
Point.
3. the method according to claim 1, wherein described according to the corresponding brightness value meter of the target detection point
The luminance uniformity for calculating the display screen to be measured includes:
Obtain the minimum brightness value in addition to the first object test point in the corresponding brightness value of other each target detection points；
The minimum brightness value is obtained into the bright of the display screen to be measured divided by the corresponding brightness value of the first object test point
Spend the uniformity.
4. the method according to claim 1, wherein target detection point is white, target in the test pictures
Region except test point is black.
5. a kind of detection device of the brightness of display screen uniformity characterized by comprising
Test pictures display module, for showing that corresponding at least two frames of 1 target detection points are surveyed in display screen to be measured
Try picture；
Brightness value obtains module, the corresponding brightness value of target detection point for being included for obtaining every frame test pictures；
Luminance uniformity computing module, for calculating the display screen to be measured according to the corresponding brightness value of the target detection point
Luminance uniformity；
Wherein, the test pictures display module, comprising:
First test pictures display sub-module, for showing corresponding first test of first object test point in display screen to be measured
Picture；
Next test pictures display sub-module, for showing next target in display screen to be measured according to test pictures switching command
The corresponding next test pictures of test point.
6. device according to claim 5, which is characterized in that the first object test point are as follows: the test of display screen center
Point.
7. device according to claim 5, which is characterized in that the luminance uniformity computing module, comprising:
Minimum brightness value acquisition submodule, it is corresponding for obtaining other each target detection points in addition to the first object test point
Brightness value in minimum brightness value；
Luminance uniformity computational submodule is used for the minimum brightness value divided by the corresponding brightness of the first object test point
Value obtains the luminance uniformity of the display screen to be measured.
8. device according to claim 5, which is characterized in that target detection point is white, target in the test pictures
Region except test point is black.
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| CN107562398B (en) * | 2017-09-12 | 2020-12-01 | 京东方科技集团股份有限公司 | Uniformity debugging method and device, uniformity debugging equipment and computer readable storage medium |
| CN109256074A (en) * | 2018-11-21 | 2019-01-22 | 四川长虹电器股份有限公司 | A kind of brightness of display screen homogeneity test device and its test method |
| CN110514303B (en) * | 2019-08-22 | 2022-09-27 | 杭州电子科技大学温州研究院有限公司 | Method for detecting uniformity and gray balance of display for soft proofing |
| CN112161782B (en) * | 2020-09-30 | 2023-04-07 | 云谷（固安）科技有限公司 | Display panel uniformity judgment method and display panel testing device |
| CN113776787A (en) * | 2021-09-27 | 2021-12-10 | 歌尔光学科技有限公司 | Screen uniformity testing method and system of virtual reality equipment and related device |
| CN114112324B (en) * | 2021-11-09 | 2024-04-26 | 合肥维信诺科技有限公司 | Display screen brightness uniformity testing method and testing device |
| CN116912181B (en) * | 2023-06-30 | 2024-04-26 | 深圳市圆周检测技术有限公司 | Screen uniformity detection method, system and readable storage medium |
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