WO2015014067A1 - 液晶屏的质量检测方法、装置及设备 - Google Patents

液晶屏的质量检测方法、装置及设备 Download PDF

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Publication number
WO2015014067A1
WO2015014067A1 PCT/CN2013/089011 CN2013089011W WO2015014067A1 WO 2015014067 A1 WO2015014067 A1 WO 2015014067A1 CN 2013089011 W CN2013089011 W CN 2013089011W WO 2015014067 A1 WO2015014067 A1 WO 2015014067A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
crystal screen
screen
defect
collection point
Prior art date
Application number
PCT/CN2013/089011
Other languages
English (en)
French (fr)
Inventor
尹岩岩
薛静
邢红燕
崔子巍
韩发龙
Original Assignee
北京京东方光电科技有限公司
京东方科技集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 北京京东方光电科技有限公司, 京东方科技集团股份有限公司 filed Critical 北京京东方光电科技有限公司
Priority to US14/354,792 priority Critical patent/US9652842B2/en
Publication of WO2015014067A1 publication Critical patent/WO2015014067A1/zh

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Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N2021/9513—Liquid crystal panels

Definitions

  • Liquid crystal screen quality detecting method device and device
  • Embodiments of the present invention relate to a method, apparatus, and apparatus for quality inspection of a liquid crystal panel. Background technique
  • embodiments of the present invention provide a quality detecting method, a detecting device, and a detecting device for a liquid crystal panel.
  • a method for detecting a quality of a liquid crystal panel includes: acquiring an optical parameter of the liquid crystal panel;
  • the liquid crystal panel is determined to be defective.
  • the determining that the liquid crystal screen is bad comprises:
  • the method further includes:
  • the defect is not in the same plane, it is determined whether the liquid crystal panel is damaged. If it is determined that the liquid crystal panel is damaged, it is determined that the liquid crystal panel is damaged.
  • the method further includes:
  • the type of the defect is determined based on the bad picture.
  • the determining the type of the defect according to the bad picture includes: If the defect is found through the gray scale L0 screen, it is determined that the defect is a poor POL (Polarizer) type or a poor line type;
  • the defect is found through the grayscale L255 screen, it is determined that the defect is a bad backlight unit (BLU, Back Light Unit).
  • BLU Back Light Unit
  • the method further includes: comparing the bad image with a previously stored defective image, and determining the bad name if it is determined that the bad image is consistent with a previously stored bad image.
  • the method further comprises: after determining the type of the defect, recording the bad position coordinates.
  • the method further includes:
  • liquid crystal panel has no defects, determining that the liquid crystal panel is at an optimal level, and flowing the liquid crystal screen from the first channel;
  • liquid crystal panel If the liquid crystal panel is defective in the box, determining that the liquid crystal panel is at the highest level, and flowing the liquid crystal screen from the first channel to perform the next process;
  • the liquid crystal screen is discharged from the second channel to be disposed of;
  • the liquid crystal panel has a poor POL type, a poor line type, or a bad BLU type, the liquid crystal screen is discharged from the third channel to be reworked.
  • a quality detecting device for a liquid crystal panel includes: a detecting unit, an image collecting unit, and an analyzing processing unit;
  • the detecting unit is configured to detect the liquid crystal panel, acquire optical parameters of the liquid crystal panel, and send the optical parameters to the analysis processing unit;
  • the image acquisition unit is configured to acquire an image of the liquid crystal screen, and transmit an image of the collected liquid crystal screen to the analysis processing unit;
  • the analysis processing unit is configured to determine that the liquid crystal panel is defective when it is determined that the optical parameter is not within the preset optical parameter range and/or the image of the collected liquid crystal screen is inconsistent with a pre-stored image.
  • the analysis processing unit includes a determination unit and a type determination unit;
  • the determining unit is configured to determine whether the optical parameter is within a preset optical parameter range, and determine whether the acquired image of the liquid crystal screen is consistent with a pre-stored image; and the type determining unit is configured to be configured according to the The judgment result of the judgment unit determines the type of the defect.
  • the determining unit is configured to determine that the optical parameter is not within the preset optical parameter range and/or the image of the collected liquid crystal screen is inconsistent with a pre-stored image, and the determination is poor. Whether it is in the same plane;
  • the type determining unit is configured to determine that the liquid crystal panel is defective in the box if the judgment result of the determining unit is that the defect is in the same plane.
  • the determining unit is further configured to determine whether the liquid crystal screen is damaged if it is determined that the defects are not in the same plane;
  • the type determining unit is further configured to determine that the liquid crystal panel is damaged or not when the judgment result of the determining unit is that the liquid crystal panel is broken.
  • the determining unit is further configured to: after determining that the liquid crystal screen is not damaged, determine a bad type according to the bad picture;
  • the type determining unit is further configured to: when the determination result of the determining unit is that the bad is found through the grayscale L0 screen, determine that the defect is a POL type defect or a line type defect; when the determining unit determines that the result is The defect is found by the gray scale L255 screen, and it is determined that the defect is a BLU type defect.
  • the determining unit is further configured to compare the bad image with a pre-stored bad type image after determining that the defect is not found through the grayscale L0 screen and is not found through the grayscale L255 screen. ;
  • the type determining unit is further configured to determine the bad name if the determining unit determines that the bad image is consistent with a previously stored bad image.
  • the analysis processing unit further includes a coordinate acquisition unit, configured to record the bad position coordinates after determining the bad type.
  • the analysis processing unit further includes a distribution unit configured to distribute the liquid crystal screen to different channels according to the quality and the bad type of the liquid crystal screen, and includes: if the liquid crystal screen is absent If the defect occurs, determining that the liquid crystal panel is at an optimal level, and distributing the liquid crystal screen to the first channel to flow out;
  • the liquid crystal panel has a defective inside the box, it is determined that the liquid crystal screen is at the highest level, and the liquid is The crystal screen is distributed to the first channel and flows out;
  • the liquid crystal screen is distributed to the second channel to be discharged, and then discarded;
  • the liquid crystal panel If the liquid crystal panel has a poor POL type, a poor line type, or a bad BLU type, the liquid crystal panel is distributed to the third channel for outflow processing.
  • a quality detecting device for a liquid crystal panel comprising: a detecting station, a lens supporting table, a slide rail connecting the detecting station and the lens supporting table, and a host;
  • the detection station is configured to place a liquid crystal panel to be detected
  • the lens support table is provided with a plurality of collection points configured to optically collect the liquid crystal screens accommodated on the detection table, wherein each collection point is provided with an optical lens and an optical camera; and the host and the The optical lens disposed on the lens support is electrically connected to the optical camera, configured to acquire optical parameters of the liquid crystal panel and acquire an image of the liquid crystal screen; and determine that the optical parameter is not within a preset optical parameter range and/or When the image of the collected liquid crystal panel is inconsistent with the pre-stored image, it is determined that the liquid crystal panel is defective.
  • the lens support table is provided with nine collection points, wherein the nine collection points are respectively the vertices of the four corners of the lens support table, the midpoints of the four sides, and the lens support The center point of the station.
  • the detecting station is provided with a receiving portion for accommodating the liquid crystal panel and the illuminating light source, and the illuminating light source is disposed under the accommodating portion and arranged to illuminate the liquid crystal panel in the accommodating portion.
  • the collection points set by the lens support table are in the order of the upper right corner in the order of the first zigzag: the first collection point, the second collection point, the third collection point, the fourth collection point, and the fifth collection point. a sixth collection point, a seventh collection point, an eighth collection point, and a ninth collection point;
  • the first optical lens of the first collection point is configured to scan a range of 180 degrees to 270 degrees and a vertical direction counterclockwise in a horizontal direction with the first collection point as a coordinate origin to obtain the liquid crystal.
  • the second optical lens of the second collection point is configured to scan a range of angles from 180 degrees to 0 degrees and a vertical direction counterclockwise in a horizontal direction with the second collection point as a coordinate origin to obtain the liquid crystal screen
  • the third optical lens of the third collection point is configured to scan a range of angles from 270 degrees to 0 degrees and a vertical direction counterclockwise in a horizontal direction with the third collection point as a coordinate origin to obtain the liquid crystal screen.
  • the fourth optical lens of the fourth collection point is configured to scan a range of angles from 270 degrees to 90 degrees and a vertical direction counterclockwise in a horizontal direction with the fourth collection point as a coordinate origin to obtain the liquid crystal screen.
  • the fifth optical lens of the fifth collection point is configured to scan a range of angles from 0 degrees to 360 degrees and a vertical direction counterclockwise in a horizontal direction with the fifth collection point as a coordinate origin to obtain the liquid crystal screen.
  • the sixth optical lens of the sixth collection point is configured to scan a range of angles from 90 degrees to 270 degrees and a vertical direction counterclockwise in a horizontal direction with the sixth collection point as a coordinate origin to obtain the liquid crystal screen.
  • the seventh optical lens of the seventh collection point is configured to scan a range of angles from 90 degrees to 180 degrees and a vertical direction counterclockwise in a horizontal direction of the seventh collection point as a coordinate origin to obtain the liquid crystal screen.
  • the eighth optical lens of the eighth collection point is configured to scan a range of angles from 0 degrees to 180 degrees and a vertical direction counterclockwise in a horizontal direction with the eighth collection point as a coordinate origin to obtain the liquid crystal screen.
  • the ninth optical lens of the ninth collection point is configured to scan a range of angles from 0 degrees to 90 degrees and a vertical direction counterclockwise in a horizontal direction of the ninth collection point as a coordinate origin to obtain the liquid crystal screen Optical parameters;
  • the corresponding nine cameras corresponding to the nine collection points are configured to collect images of the liquid crystal screen in the corresponding area.
  • the nine optical lenses and the nine cameras are coupled to the lens support table by slide rails.
  • FIG. 1 is a schematic flow chart of a method for detecting quality of a liquid crystal panel according to a first embodiment of the present invention
  • 2 is a schematic structural diagram of a quality detecting device for a liquid crystal panel according to a first embodiment of the present invention
  • FIG. 3 is a schematic structural view of a quality detecting device for a liquid crystal panel according to a second embodiment of the present invention
  • FIG. 5 is a schematic diagram showing a flow of a method for detecting a quality of a liquid crystal panel according to a second embodiment of the present invention.
  • FIG. 1 is a schematic flowchart of a method for detecting quality of a liquid crystal panel according to a first embodiment of the present invention, where the method includes:
  • Step 101 Detect the liquid crystal panel to obtain optical parameters of the liquid crystal panel.
  • the acquiring the optical parameters of the liquid crystal panel comprises: acquiring a brightness value, a chromaticity value, and a color temperature value of the liquid crystal screen.
  • the liquid crystal panel to be tested is irradiated by a fixed light source, and the surface of the liquid crystal panel is scanned by optical lenses of different orientations to obtain optical parameters such as a luminance value, a chromaticity value, and a color temperature value of the liquid crystal panel.
  • Step 102 Acquire an image of the liquid crystal screen.
  • the image of the liquid crystal screen can be acquired by cameras of different orientations.
  • Step 103 to step 106 determining whether the optical parameter is within a preset optical parameter range, When the determination result is yes, it is further determined whether the image of the collected liquid crystal screen is consistent with the pre-stored image, when the optical parameter is not within the preset optical parameter range and/or the collected liquid crystal screen When the image is inconsistent with the pre-stored image, it is determined that the liquid crystal panel is defective, and the LCD screen is determined to be a good product.
  • the optical parameters of the preset liquid crystal screen are, for example, the chromaticity of red is generally about x: 0.632, y: 0.346, and the allowable fluctuation range is about 0.02, and the red chromaticity range is from x: 0.0612 to 0.652. , y: 0.326 ⁇ 0.366 will be considered red chromaticity is good.
  • the determining that the liquid crystal screen is bad comprises:
  • the defect is not in the same plane, it is further determined whether the liquid crystal panel is damaged. If it is determined that the liquid crystal panel is damaged, it is determined that the liquid crystal panel is damaged.
  • determining the type of the defect according to the bad picture comprises:
  • the defect is found through the grayscale L0 screen, it is determined that the defect is a poor POL (Polarizer) type or a poor line type;
  • the defect is found through the grayscale L255 screen, it is determined that the defect is a bad backlight unit (BLU, Back Light Unit).
  • BLU Back Light Unit
  • the grayscale L0 screen is a full black screen, and the black screen can determine whether the defect is a POL defect or a line defect; the gray scale L255 is an all white screen, and the white screen can be It is determined whether the defect is a poor BLU type.
  • the bad image is compared with a pre-stored bad image, if the bad image is determined by comparison
  • the bad name is determined in accordance with a pre-stored bad image.
  • the method further includes: blinking or audible alarm when the bad image is inconsistent with the pre-stored bad image.
  • the technician is notified by an alarm, and the technician manually determines the type of the defect.
  • the bad position coordinates are recorded. According to an embodiment of the present invention, if the liquid crystal panel has no bad appearance, determining that the liquid crystal panel is at an optimal level, flowing the liquid crystal screen from the first channel;
  • liquid crystal panel If the liquid crystal panel is defective in the box, determining that the liquid crystal panel is at the highest level, and flowing the liquid crystal screen from the first channel to perform the next process;
  • the liquid crystal screen is discharged from the second channel to be disposed of;
  • the liquid crystal panel has a poor POL type, a poor line type, or a bad BLU type, the liquid crystal screen is discharged from the third channel to be reworked.
  • the liquid crystal screen is discharged from the first channel for the next process; if the liquid crystal panel is defective in the box, the liquid crystal screen cannot be repaired but can also be used, and the liquid crystal screen is determined to be the lowest Level, the liquid crystal screen is discharged from the first channel for the next process; if the liquid crystal panel is damaged, the liquid crystal screen cannot be repaired and cannot be used normally, and the liquid crystal screen is removed from the second channel.
  • the LCD screen can be repaired, and the liquid crystal screen is discharged from the third channel for rework processing, for example. If the LCD screen is defective in POL, you can re-attach the polarizer for ⁇ ⁇ .
  • the device includes: a detecting unit 21, an image collecting unit 22, and an analyzing processing unit 23;
  • the detecting unit 21 is configured to detect the liquid crystal screen, acquire optical parameters of the liquid crystal screen, and send the optical parameters to the analysis processing unit 23;
  • the image acquisition unit 22 is configured to collect an image of the liquid crystal screen, and send the image of the collected liquid crystal screen to the analysis processing unit 23;
  • the analysis processing unit 23 is configured to determine that the LCD screen is bad if it is determined that the optical parameter is not within the preset optical parameter range and/or the image of the collected liquid crystal screen is inconsistent with a pre-stored image. .
  • the analysis processing unit 23 includes: a determination unit 231 and a type determination unit 232;
  • the determining unit 231 is configured to determine whether the optical parameter is within a preset optical parameter range; and determining whether the image of the collected liquid crystal screen is consistent with a pre-stored image; and
  • the type determining unit 232 is configured to determine the type of the defect based on the judgment result of the judging unit 231.
  • the determining unit 231 is configured to determine that the optical parameter is not within the preset optical parameter range and/or the image of the collected liquid crystal screen is inconsistent with a pre-stored image, and the determination is poor. Whether it is in the same plane;
  • the type determining unit 232 is configured to determine that the liquid crystal panel is defective in the box if the determination result of the determining unit 231 is that the defect is in the same plane.
  • the determining unit 231 is further configured to determine whether the liquid crystal screen is damaged if it is determined that the defect is not in the same plane;
  • the type determining unit 232 is further configured to determine that the liquid crystal panel is damaged if the judgment result of the determining unit 231 is that the liquid crystal panel is broken.
  • the determining unit 231 is further configured to determine that the LCD screen is not damaged, and determine the type of the defect according to the bad picture.
  • the type determining unit 232 is further configured to determine that the defect is a POL-type defect or a line-like defect if the determination result of the determining unit 231 is that the defect is found by the gray-scale L0 screen; if the determining unit 231 As a result of the determination, the defect is found by the grayscale L255 screen, and it is determined that the defect is a BLU type defect.
  • the determining unit 231 is further configured to determine that the defect is not a previously stored bad type image for comparison.
  • the type determining unit 232 is further configured to determine the bad name if the determining unit 231 determines that the bad image is consistent with a previously stored bad image.
  • the analysis processing unit 23 further includes a coordinate acquisition unit 233 configured to record the bad position coordinates after the defect type is configured.
  • the analysis processing unit 23 further includes a distribution unit 234 configured to distribute the liquid crystal screen to different channels according to the quality and the bad type of the liquid crystal screen;
  • liquid crystal panel has no defects, determining that the liquid crystal panel is at an optimal level, distributing the liquid crystal panel to the first channel, and performing the next step;
  • liquid crystal panel If the liquid crystal panel is defective in the box, determining that the liquid crystal panel is at the highest level, distributing the liquid crystal screen to the first channel, and performing the next step;
  • the liquid crystal screen is distributed to the second channel to be discharged, and then discarded;
  • the liquid crystal panel If the liquid crystal panel has a poor POL type, a poor line type, or a bad BLU type, the liquid crystal panel is distributed to the third channel for outflow processing.
  • FIG. 3 is a schematic structural diagram of a quality detecting apparatus for a liquid crystal panel according to a second embodiment of the present invention.
  • the apparatus includes: a detecting station 31, a lens supporting platform 32, and the detecting station 31 and the a slide rail 33 of the lens support table, and a main body 34; wherein
  • the detecting station 31 is configured to place a liquid crystal panel to be detected
  • the lens support table 32 is provided with nine collection points, and is configured to perform optical collection and image acquisition on the liquid crystal panel accommodated on the detection platform, and each collection point is provided with an optical lens and an optical camera, and the nine The collection points are respectively the vertices of the four corners of the lens support table, the midpoint of the four sides, and the center point of the lens support table;
  • the host 34 is electrically connected to the optical lens and the optical camera provided by the lens support station, configured to detect the liquid crystal screen, obtain optical parameters of the liquid crystal screen, acquire an image of the liquid crystal screen, and if The optical parameter is not within the preset optical parameter range and/or the image of the collected liquid crystal screen is inconsistent with the pre-stored image, determining whether the liquid crystal screen is defective or not, and controlling the liquid crystal screen according to the analysis result. Operation, such as distribution to each channel for the next step.
  • the lens support table 32 can be adjusted from the detection table 31 by the slide rail. position.
  • the optical lens of each collection point and the camera are located in the same position of the collection device, which may be similar to a bowl shape; the optical lens is configured to scan the surface of the liquid crystal screen, the chromaticity of the liquid crystal screen, Optical parameters such as brightness and color temperature are detected and displayed and analyzed by the host; the nine optical lenses can simultaneously detect data of the surface of the liquid crystal screen in different orientations;
  • the camera captures the image of the surface of the liquid crystal screen in a fixed manner, and automatically adjusts the focal length while photographing, so as to ensure that the collected image effect is optimal.
  • the detecting station 31 is provided with a receiving portion for accommodating the liquid crystal panel and the illuminating light source, and the illuminating light source is disposed under the accommodating portion, and is configured to illuminate the liquid crystal display in the accommodating portion. .
  • FIG. 4 is a top view of a collection point distribution of a lens support table according to a second embodiment of the present invention.
  • the collection point set by the lens support table 32 is in the upper zigzag order. (ie, the first line is right to left, the second line is left to right, and the third line is repeated from right to left).
  • the order is: first collection point 1, second collection point 2, third collection point 3,
  • the fourth collection point 4 the fifth collection point 5, the sixth collection point 6, the seventh collection point 7, the eighth collection point 8, and the ninth collection point 9.
  • the first optical lens of the first collection point 1 is configured to scan a range of 180 degrees to 270 degrees and a vertical direction counterclockwise in a horizontal direction with the first collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the second optical lens of the second collection point 2 is configured to scan a range of angles from 180 degrees to 0 degrees and a vertical direction counterclockwise in a horizontal direction with the second collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the third optical lens of the third collection point 3 is configured to scan a range of angles from 270 degrees to 0 degrees and a vertical direction counterclockwise in a horizontal direction with the third collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the fourth optical lens of the fourth collection point 4 is configured to scan a range of angles from 270 degrees to 90 degrees and a vertical direction counterclockwise in a horizontal direction with the fourth collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the fifth optical lens of the fifth collection point 5 is configured to scan a range of angles from 0 degrees to 360 degrees and a vertical direction counterclockwise in a horizontal direction with the fifth collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the sixth optical lens of the sixth collection point 6 is configured to scan a range of 90 degrees to 270 degrees and a vertical direction counterclockwise in a horizontal direction with the sixth collection point as a coordinate origin, and obtain the liquid crystal.
  • the optical parameters of the screen is configured to scan a range of angles from 0 degrees to 360 degrees and a vertical direction counterclockwise in a horizontal direction with the fifth collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the seventh optical lens of the seventh collection point 7 is configured to scan a range of 90 degrees to 180 degrees and a vertical direction counterclockwise in a horizontal direction with the seventh collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the eighth optical lens of the eighth collection point 8 is configured to scan a range of angles from 0 degrees to 180 degrees and a vertical direction counterclockwise in a horizontal direction with the eighth collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the ninth optical lens of the ninth collection point 9 is configured to scan a range of angles from 0 degrees to 90 degrees and a vertical direction counterclockwise in a horizontal direction with the ninth collection point as a coordinate origin to obtain the Optical parameters of the LCD screen.
  • the 0 degree direction in the horizontal direction in which each collection point is the coordinate origin refers to the direction of the right half axis of the X axis among the coordinate axes of the coordinate origin of the coordinate point.
  • the nine cameras corresponding to the nine collection points are respectively configured to collect images of the liquid crystal screen in the corresponding area.
  • the nine optical lenses and the nine cameras are coupled to the lens support table 32 by slide rails.
  • the positions of the nine optical lenses and the camera are also adjustable.
  • the present invention is not limited to setting nine collection points, and can be adjusted according to the specific shape and size of the liquid crystal panel.
  • the connection between the optical lens and the camera and the lens support table is not limited to being connected via a slide rail, but may be adjusted by other means.
  • FIG. 5 is a schematic flowchart of a method for detecting quality of a liquid crystal panel according to a second embodiment of the present invention. As shown in FIG. 5, the method includes:
  • Step 501 Detect optical parameters of nine orientations of the liquid crystal screen, and collect images of nine orientations of the liquid crystal screen;
  • the optical parameters of the nine orientations of the liquid crystal screen may be detected by a uniformly equidistantly distributed optical lens, including the luminance value, the chromaticity value, the color temperature value, and the like; the camera is uniformly equidistantly distributed. Acquiring images of nine orientations of the LCD screen;
  • Step 502 Determine whether the optical parameters of the nine orientations are within a preset optical parameter range
  • step 503 is performed
  • step 504 is performed
  • Step 503 determining whether the image of the nine orientations is consistent with the pre-stored image; if the result of the determination in step 503 is yes, performing step 515;
  • step 504 is performed
  • Step 504 Determine whether the defect is in the same plane
  • step 505 is performed
  • Step 505 determining that the liquid crystal screen is defective in the box, continue to step 515;
  • step 506 is performed
  • Step 506 Determine whether the LCD screen is damaged.
  • step 507 If the result of the determination in step 506 is yes, then step 507 is performed;
  • Step 507 determining that the liquid crystal panel is damaged, continue to step 515;
  • step 506 If the result of the determination in step 506 is no, proceed to step 508;
  • Step 508 Determine whether the defect is found through the L0 screen
  • step 509 is performed
  • Step 509 determining that the defect is a POL-type defect or a line-like defect, proceeding to step 515; if the result of the determination in step 508 is no, proceeding to step 510;
  • Step 510 Determine whether the defect is found through the L255 screen
  • step 51 1 is performed
  • Step 51 1 determining that the defect is a bad BLU type, and continuing to step 515;
  • step 510 If the result of the determination in step 510 is no, proceed to step 512;
  • Step 512 Determine whether the bad picture matches the previously stored bad image; if the result of the determination in step 512 is yes, proceed to step 513;
  • Step 513 Enter a bad name, continue to step 515;
  • step 514 is performed;
  • Step 514 flashing or sounding through a red light.
  • the defective image is compared with the stored defective image, and if the same defective image as the defective image is displayed by comparison, the type of the defective image is recorded; if the defective image does not match the previously stored defective image, The technician is informed by the alarm, and the technician is further determined by manual identification of the type of defect.
  • Step 515 Combine all the images to determine the level of the LCD screen, and then perform step 516;
  • Step 516 further determining whether the liquid crystal screen is an optimal level
  • step 517 is performed
  • Step 517 The liquid crystal screen is discharged from the first channel
  • step 516 If the result of the determination in step 516 is no, proceed to step 518;
  • the liquid crystal panel if the liquid crystal panel has no defects, it is determined that the liquid crystal panel is at an optimal level, and the liquid crystal panel is discharged from the first channel to perform the next process.
  • Step 518 Determine whether the liquid crystal screen is defective in the box
  • step 519 is performed
  • Step 519 Determine that the liquid crystal panel is at the lowest level, and return to step 517, the liquid crystal screen flows out from the first channel, and performs the next process;
  • step 518 If the result of the determination in step 518 is no, proceed to step 520;
  • the liquid crystal panel has a defective inside the cartridge, it indicates that the liquid crystal panel cannot be repaired but can also be used, and the liquid crystal panel is determined to be the lowest level, and the liquid crystal panel is discharged from the first channel for the next process.
  • Step 520 determining whether the liquid crystal screen is damaged or not
  • step 521 is performed
  • Step 521 The liquid crystal screen is discharged from the second channel
  • step 522 is performed
  • Step 522 The liquid crystal screen is discharged from the third channel
  • the liquid crystal panel is damaged, it indicates that the liquid crystal panel cannot be repaired and cannot be used normally, and the liquid crystal screen is discharged from the second channel to be scrapped; if the liquid crystal panel has a POL type defect The line type is bad or the BLU type is bad, indicating that the liquid crystal screen can also be repaired, and the liquid crystal screen is discharged from the third channel for rework processing.
  • the method, device and device for detecting the quality of the liquid crystal screen obtained by the embodiment of the invention obtain the optical parameters of the liquid crystal screen by detecting the liquid crystal screen; collecting an image of the liquid crystal screen; When the optical parameter is not within the preset optical parameter range and/or the image of the collected liquid crystal screen is inconsistent with a pre-stored image, the liquid crystal screen is determined to be defective. In this way, it is possible to effectively distinguish the types of products and record the bad positions of the products, thereby effectively reducing misjudgment or missed detection caused by human visual differences, and improving the product quality and yield of the products.

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Abstract

一种液晶屏的质量检测方法，包括：获取液晶屏的光学参数；采集液晶屏的图像；以及若判定该光学参数不在预设的光学参数范围内和/或采集的液晶屏的图像与预先存储的图像不一致，确定液晶屏为不良。采用该方法，能够有效区分出产品的不良类型，并记录产品的不良位置，有效地减少由于人为视觉差异等造成的误判或漏检，提高产品的出厂品质及良品率。还提供了一种液晶屏的质量检测装置。

Description

液晶屏的质量检测方法、 装置及设备 技术领域
本发明的实施例涉及一种液晶屏的质量检测方法、 装置及设备。 背景技术
在传统的液晶屏工艺中， 对液晶屏产品进行不良检测、 以及对液晶屏产 品最终判断级别的阶段全部为人工作业。 但是， 由于人的视觉差异或者人为 因素等原因， 会造成对液晶屏产品的误判、 漏检， 影响液晶屏产品的出厂品 质及良品率。 发明内容
有鉴于此， 本发明的实施例提供一种液晶屏的质量检测方法、 检测装置 及检测设备。
根据本发明的一个方面， 提供一种液晶屏的质量检测方法， 包括： 获取所述液晶屏的光学参数；
采集所述液晶屏的图像； 以及
判定所述光学参数不在预设的光学参数范围内和 /或所述采集的液晶屏 的图像与预先存储的图像不一致时， 确定所述液晶屏为不良。
根据本发明的实施例， 所述确定所述液晶屏为不良包括：
判定所述光学参数不在所述预设的光学参数范围内和 /或所述采集的液 晶屏的图像与预先存储的图像不一致之后， 判断不良是否在同一平面内， 若 确定所述不良在同一平面内， 则确定所述液晶屏为盒内不良。
根据本发明的实施例， 所述方法还包括：
若确定所述不良不在同一平面内， 判断所述液晶屏是否破损， 如果确定 所述液晶屏破损时， 则确定所述液晶屏为破损类不良。
根据本发明的实施例， 所述方法还包括：
确定所述液晶屏没有破损后， 根据所述不良的画面判断不良类型。 所述根据所述不良的画面判断不良类型包括： 若所述不良通过灰阶 L0 画面发现， 则确定所述不良为偏光片 （POL, Polarizer )类不良或线类不良； 以及
若所述不良通过灰阶 L255 画面发现， 则确定所述不良为背光源组件 ( BLU, Back Light Unit )类不良。
根据本发明的实施例， 所述方法还包括： 则将所述不良图像与预先存储的不良图像进行比较， 若确定所述不良图像与 预先存储的不良图像一致， 确定所述不良名称。
根据本发明的实施例， 所述方法还包括： 确定不良类型后， 记录所述不 良的位置坐标。
根据本发明的实施例， 所述方法还包括：
若所述液晶屏无不良出现， 则确定所述液晶屏为最优级别， 将所述液晶 屏从第一通道流出；
若所述液晶屏出现盒内不良， 则确定所述液晶屏为最^ 级别， 将所述液 晶屏从第一通道流出， 进行下一道工序；
若所述液晶屏出现破损类不良， 将所述液晶屏从第二通道流出， 做报废 处理； 以及
若所述液晶屏出现 POL类不良、 线类不良或 BLU类不良， 将所述液晶 屏从第三通道流出， 做返工处理。
根据本发明的另一方面， 提供一种液晶屏的质量检测装置， 包括： 检测 单元、 图像采集单元和分析处理单元； 其中，
所述检测单元配置来检测所述液晶屏， 获取所述液晶屏的光学参数， 以 及将所述光学参数发送给所述分析处理单元；
所述图像采集单元配置来采集所述液晶屏的图像， 以及将所述采集的液 晶屏的图像发送给所述分析处理单元； 以及
所述分析处理单元配置来在判断所述光学参数不在所述预设的光学参数 范围内和 /或所述采集的液晶屏的图像与预先存储的图像不一致时，确定所述 液晶屏为不良。
根据本发明的实施例，所述分析处理单元包括判断单元和类型确定单元； 其中 所述判断单元配置来判断所述光学参数是否在预先设置的光学参数范围 内， 以及判断所述采集的液晶屏的图像与预先存储的图像是否一致； 以及 所述类型确定单元配置来根据所述判断单元的判断结果确定不良类型。 根据本发明的实施例， 所述判断单元配置来在判断所述光学参数不在所 述预先设置的光学参数范围内和 /或所述采集的液晶屏的图像与预先存储的 图像不一致之后， 判断不良是否在同一平面内；
所述类型确定单元配置来若所述判断单元的判断结果为不良在同一平面 内， 确定所述液晶屏为盒内不良。
根据本发明的实施例， 所述判断单元还配置来若确定不良不在同一平面 内， 判断所述液晶屏是否破损； 以及
所述类型确定单元还配置来当所述判断单元的判断结果为液晶屏破损 时， 确定所述液晶屏为破损类不良。
根据本发明的实施例， 所述判断单元还配置来当确定所述液晶屏没有破 损后， ^据所述不良的画面判断不良类型；
所述类型确定单元还配置来当所述判断单元的判断结果为所述不良通过 灰阶 L0画面发现， 则确定所述不良为 POL类不良或线类不良； 当所述判断 单元的判断结果为所述不良通过灰阶 L255画面发现，则确定所述不良为 BLU 类不良。
根据本发明的实施例， 所述判断单元还配置来当确定所述不良不是通过 灰阶 L0画面发现且不是通过灰阶 L255画面发现后，将所述不良图像与预先 存储的不良类型图像进行比较；
所述类型确定单元还配置来若所述判断单元确定所述不良图像与预先存 储的不良图像一致， 确定所述不良名称。
根据本发明的实施例， 所述分析处理单元还包括坐标获取单元， 用于确 定不良类型后， 记录所述不良的位置坐标。
根据本发明的实施例， 所述分析处理单元还包括分发单元， 配置来根据 所述液晶屏的优劣及不良类型， 分发所述液晶屏至不同的通道流出； 包括： 若所述液晶屏无不良出现， 则确定所述液晶屏为最优级别， 将所述液晶 屏分发至第一通道流出；
若所述液晶屏出现盒内不良， 则确定所述液晶屏为最^ 级别， 将所述液 晶屏分发至第一通道流出；
若所述液晶屏出现破损类不良， 将所述液晶屏分发至第二通道流出， 做 才艮废处理； 以及
若所述液晶屏出现 POL类不良、 线类不良或 BLU类不良， 将所述液晶 屏分发至第三通道流出， 做返工处理。
根据本发明的另一方面， 提供一种液晶屏的质量检测设备， 所述设备包 括： 检测台、镜头支撑台、连接所述检测台和所述镜头支撑台的滑轨和主机； 其中，
所述检测台配置来放置待检测的液晶屏；
所述镜头支撑台设置有多个采集点， 配置来对所述检测台上容置的液晶 屏进行光学采集， 其中每个采集点各设置有光学镜头和光学摄像头； 以及 所述主机与所述镜头支撑台设置的光学镜头和光学摄像头电连接， 配置 来获取所述液晶屏的光学参数以及采集所述液晶屏的图像； 并在判定所述光 学参数不在预设的光学参数范围内和 /或所述采集的液晶屏的图像与预先存 储的图像不一致时， 确定所述液晶屏为不良。
根据本发明的实施例， 所述镜头支撑台设置有九个采集点， 所述九个采 集点分别为所述镜头支撑台的四个角的顶点、 四个边的中点及所述镜头支撑 台的中心点。
根据本发明的实施例， 所述检测台上设置有容置液晶屏的容置部及发光 光源， 所述发光光源设置在所述容置部下， 配置来照射所述容置部内的液晶 屏。
根据本发明的实施例， 所述镜头支撑台设置的采集点按右上角为首之字 形顺序依次为： 第一采集点、 第二采集点、 第三采集点、 第四采集点、 第五 采集点、 第六采集点、 第七采集点、 第八采集点、 以及第九采集点；
其中所述第一采集点的第一光学镜头配置来扫描以所述第一采集点为坐 标原点的水平方向逆时针从 180度至 270度、 竖直方向各角度的范围， 以获 取所述液晶屏的光学参数；
所述第二采集点的第二光学镜头配置来扫描以所述第二采集点为坐标原 点的水平方向逆时针从 180度至 0度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数； 所述第三采集点的第三光学镜头配置来扫描以所述第三采集点为坐标原 点的水平方向逆时针从 270度至 0度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第四采集点的第四光学镜头配置来扫描以所述第四采集点为坐标原 点的水平方向逆时针从 270度至 90度、竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第五采集点的第五光学镜头配置来扫描以所述第五采集点为坐标原 点的水平方向逆时针从 0度至 360度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第六采集点的第六光学镜头配置来扫描以所述第六采集点为坐标原 点的水平方向逆时针从 90度至 270度、竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第七采集点的第七光学镜头配置来扫描以所述第七采集点为坐标原 点的水平方向逆时针从 90度至 180度、竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第八采集点的第八光学镜头配置来扫描以所述第八采集点为坐标原 点的水平方向逆时针从 0度至 180度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第九采集点的第九光学镜头配置来扫描以所述第九采集点为坐标原 点的水平方向逆时针从 0度至 90度、竖直方向各角度的范围，以获取所述液 晶屏的光学参数； 以及
相应的所述九个采集点对应的九个摄像头配置来采集对应的区域所述液 晶屏的图像。
根据本发明的实施例， 所述九个光学镜头和所述九个摄像头通过滑轨与 所述镜头支撑台连接。 附图说明
以下将结合附图对本发明的实施例进行更详细的说明， 以使本领域普通 技术人员更加清楚地理解本发明， 其中：
图 1为本发明第一实施例提供的液晶屏的质量检测方法的流程示意图； 图 2为本发明第一实施例提供的液晶屏的质量检测装置的结构示意图； 图 3为本发明第二实施例提供的液晶屏的质量检测设备的结构示意图； 图 4为本发明第二实施例中镜头支撑台设置的采集点分布俯视示意图； 图 5为本发明第二实施例提供的液晶屏的质量检测方法的流程示例图。 具体实施方式
为使本发明实施例的目的、 技术方案和优点更加清楚， 下面将结合本发 明实施例的附图，对本发明实施例的技术方案进行清楚、 完整地描述。显然， 所描述的实施例是本发明的一部分实施例， 而不是全部的实施例。 基于所描 述的本发明的实施例， 本领域普通技术人员在无需创造性劳动的前提下所获 得的所有其他实施例， 都应属于本发明保护的范围。
除非另作定义， 此处使用的技术术语或者科学术语应当为本发明所属领 域内具有一般技能的人士所理解的通常意义。 本发明专利申请说明书以及权 利要求书中使用的 "第一"、 "第二" 以及类似的词语并不表示任何顺序、 数 量或者重要性， 而只是用来区分不同的组成部分。 同样， "一个"、 "一" 或者 "该" 等类似词语也不表示数量限制， 而是表示存在至少一个。 "包括" 或者 "包含" 等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后 面列举的元件或者物件及其等同，而不排除其他元件或者物件。 "上"、 "下"、 等仅用于表示相对位置关系， 当被描述对象的绝对位置改变后， 则该相对位 置关系也可能相应地改变。 "连接"、 "相连" 等类似的词语并非限定于物理的 或者机械的连接， 而是可以包括电性的连接， 不管是直接的还是间接的。
图 1为本发明第一实施例提供的液晶屏的质量检测方法的流程示意图， 该方法包括：
步骤 101 : 检测所述液晶屏， 获取所述液晶屏的光学参数。
这里，所述获取所述液晶屏的光学参数包括： 获取所述液晶屏的亮度值、 色度值和色温值。
例如， 通过固定光源照射待测液晶屏， 通过不同方位的光学镜头扫描所 述液晶屏的表面， 获得所述液晶屏的亮度值、 色度值和色温值等光学参数。
步骤 102: 采集所述液晶屏的图像。
这里， 可通过不同方位的摄像头采集所述液晶屏的图像。
步骤 103 ~步骤 106: 判断所述光学参数是否在预设的光学参数范围内， 在判断结果为是时， 则进一步判断所述采集的液晶屏的图像与预先存储的图 像是否一致， 当所述光学参数不在所述预设的光学参数范围内和 /或所述采集 的液晶屏的图像与预先存储的图像不一致时，确定所述液晶屏为不良，否贝' J , 确定所述液晶屏为良品。
这里， 所述预设液晶屏的光学参数为， 例如： 红色的色度一般约为 x:0.632 , y:0.346 , 允许的波动范围约为 0.02 , 则红色的色度范围在 x:0.0612~0.652, y:0.326~0.366之间会被认为红色的色度良好。
根据本发明的实施例， 所述确定所述液晶屏为不良包括：
确定所述光学参数不在所述预设的光学参数范围内和 /或所述采集的液 晶屏的图像与预先存储的图像不一致之后， 进一步判断不良是否在同一平面 内， 如果确定所述不良在同一平面内， 则确定所述液晶屏为盒内不良。
根据本发明的实施例， 若确定所述不良不在同一平面内， 进一步判断所 述液晶屏是否破损， 若确定所述液晶屏破损， 则确定所述液晶屏为破损类不 良。
根据本发明的实施例， 确定所述液晶屏没破损后， 则根据所述不良的画 面判断不良类型， 包括：
若所述不良通过灰阶 L0 画面发现， 则确定所述不良为偏光片 （POL, Polarizer )类不良或线类不良；
若所述不良通过灰阶 L255 画面发现， 则确定所述不良为背光源组件 ( BLU, Back Light Unit )类不良。
这里， 所述灰阶 L0画面为全黑画面， 通过所述全黑画面可确定所述不 良是否为 POL不良或线类不良； 所述灰阶 L255为全白画面， 通过所述全白 画面可确定所述不良是否为 BLU类不良。
根据本发明的实施例， 若所述不良不是通过灰阶 L0画面发现且不是通 过灰阶 L255画面发现， 则将所述不良图像与预先存储的不良图像进行比较， 若通过比较确定所述不良图像与预先存储的不良图像一致， 确定所述不良名 称。
这里， 若所述不良既不是在 L0画面发现又不是在 L255画面发现， 则将 所述不良图像与存储的不良图像进行比较， 若通过比较显示存在与所述不良 图像相同的不良图像， 则记录所述不良图像的类型。 根据本发明的实施例， 所述方法还包括： 当所述不良图像与预先存储的 不良图像不一致时， 通过红灯闪烁或声音报警。
这里， 若所述不良图像与预先存储的不良图像不一致， 则通过报警告知 技术人员， 由技术人员通过人工判别不良类型。
根据本发明的实施例， 确定不良类型后， 记录所述不良的位置坐标。 根据本发明的实施例， 若所述液晶屏无不良出现， 则确定所述液晶屏为 最优级别， 将所述液晶屏从第一通道流出；
若所述液晶屏出现盒内不良， 则确定所述液晶屏为最^ 级别， 将所述液 晶屏从第一通道流出， 进行下一道工序；
若所述液晶屏出现破损类不良， 将所述液晶屏从第二通道流出， 做报废 处理； 以及
若所述液晶屏出现 POL类不良、 线类不良或 BLU类不良， 将所述液晶 屏从第三通道流出， 做返工处理。
这里， 确定所述液晶屏的不良类型后， 依据所述不良类型对所述液晶屏 进行下一步工艺流程， 例如， 综合所有图像， 若所述液晶屏无不良出现， 则 确定所述液晶屏为最优级别，将所述液晶屏从第一通道流出进行下一道工序； 若所述液晶屏出现盒内不良， 则说明所述液晶屏已无法修复但还可以使用， 确定所述液晶屏为最低级别，将所述液晶屏从第一通道流出进行下一道工序； 若所述液晶屏出现破损类不良， 则说明所述液晶屏已无法修复且无法正常使 用， 将所述液晶屏从第二通道流出， 做才艮废处理； 若所述液晶屏出现 POL类 不良、 线类不良或 BLU类不良， 说明此液晶屏还可以修复， 将所述液晶屏 从第三通道流出， 做返工处理， 例如如果液晶屏出现的是 POL类不良， 可以 通过重新贴附偏光片进行^ ίι爹复。
图 2为本发明第一实施例提供的液晶屏的质量检测装置的组成结构示意 图， 如图 2所示， 所述装置包括： 检测单元 21、 图像采集单元 22和分析处 理单元 23; 其中，
所述检测单元 21 ,配置来检测所述液晶屏，获取所述液晶屏的光学参数， 以及将所述光学参数发送给所述分析处理单元 23;
所述图像采集单元 22, 配置来采集所述液晶屏的图像， 将所述采集的液 晶屏的图像发送给所述分析处理单元 23; 以及 所述分析处理单元 23 ,配置来若判断所述光学参数不在所述预设的光学 参数范围内和 /或所述采集的液晶屏的图像与预先存储的图像不一致，确定所 述液晶屏为不良。
根据本发明的实施例，所述分析处理单元 23包括：判断单元 231和类型 确定单元 232; 其中，
所述判断单元 231配置来判断所述光学参数是否在预先设置的光学参数 范围内； 以及判断所述采集的液晶屏的图像与预先存储的图像是否一致； 以 及
所述类型确定单元 232配置来根据所述判断单元 231的判断结果确定不 良类型。
根据本发明的实施例， 所述判断单元 231配置来判断所述光学参数不在 所述预先设置的光学参数范围内和 /或所述采集的液晶屏的图像与预先存储 的图像不一致之后， 判断不良是否在同一平面内；
所述类型确定单元 232配置来若所述判断单元 231的判断结果为不良在 同一平面内， 确定所述液晶屏为盒内不良。
根据本发明的实施例， 所述判断单元 231还配置来若确定不良不在同一 平面内， 判断所述液晶屏是否破损；
所述类型确定单元 232, 还配置来若所述判断单元 231的判断结果为液 晶屏破损， 确定所述液晶屏为破损类不良。
根据本发明的实施例， 所述判断单元 231 , 还配置来确定所述液晶屏没 有破损后， 根据所述不良的画面判断不良类型。
所述类型确定单元 232, 还配置来若所述判断单元 231的判断结果为所 述不良通过灰阶 L0画面发现， 则确定所述不良为 POL类不良或线类不良； 若所述判断单元 231的判断结果为所述不良通过灰阶 L255画面发现， 则确 定所述不良为 BLU类不良。
根据本发明的实施例， 所述判断单元 231还配置来确定所述不良不是通 先存储的不良类型图像进行比较。
所述类型确定单元 232还配置来若所述判断单元 231确定所述不良图像 与预先存储的不良图像一致， 确定所述不良名称。 根据本发明的实施例， 所述分析处理单元 23还包括坐标获取单元 233 , 配置来确定不良类型后， 记录所述不良的位置坐标。
根据本发明的实施例， 所述分析处理单元 23还包括分发单元 234, 配置 来根据所述液晶屏的优劣及不良类型， 分发所述液晶屏至不同的通道流出； 包括：
若所述液晶屏无不良出现， 则确定所述液晶屏为最优级别， 将所述液晶 屏分发至第一通道流出， 进行下一步工序；
若所述液晶屏出现盒内不良， 则确定所述液晶屏为最^ 级别， 将所述液 晶屏分发至第一通道流出， 进行下一步工序；
若所述液晶屏出现破损类不良， 将所述液晶屏分发至第二通道流出， 做 才艮废处理； 以及
若所述液晶屏出现 POL类不良、 线类不良或 BLU类不良， 将所述液晶 屏分发至第三通道流出， 做返工处理。
图 3为本发明第二实施例提供的液晶屏的质量检测设备的组成结构示意 图， 如图 3所示， 所述设备包括： 检测台 31 , 镜头支撑台 32, 连接所述检测 台 31和所述镜头支撑台的滑轨 33 , 以及主机 34; 其中，
所述检测台 31 , 配置来放置待检测的液晶屏；
所述镜头支撑台 32上设置有九个采集点，配置来对所述检测台上容置的 液晶屏进行光学采集和图像采集， 每个采集点各设置有光学镜头和光学摄像 头， 所述九个采集点分别为所述镜头支撑台的四个角的顶点、 四个边的中点 及所述镜头支撑台的中心点；
所述主机 34 , 与所述镜头支撑台设置的光学镜头和光学摄像头电连接， 配置来检测所述液晶屏， 获取所述液晶屏的光学参数； 采集所述液晶屏的图 像；并且若判定所述光学参数不在预设的光学参数范围内和 /或所述采集的液 晶屏的图像与预先存储的图像不一致， 确定所述液晶屏是否不良以及不良的 类型， 并根据分析结果控制对液晶屏的操作， 如分发至各个通道进行下一步 操作。
这里， 由于液晶屏的厚度不同， 对于厚度不同的液晶屏来说， 为了保证 光学镜头和光学摄像头保持最佳焦距， 因此，所述镜头支撑台 32可通过滑轨 调整距离所述检测台 31的位置。 这里， 每个采集点的所述光学镜头和所述摄像头位于同一位置的采集装 置中， 可类似于碗状； 所述光学镜头配置来扫描液晶屏的表面， 对所述液晶 屏的色度、 亮度及色温等光学参数进行检测并通过主机显示和分析数据； 所 述九个光学镜头可同时检测不同方位的液晶屏表面的数据；
所述摄像头为固定不动的拍摄所述液晶屏表面的图像， 拍照的同时能自 动调节焦距， 以保证采集的图像效果为最佳。
根据本发明的实施例，所述检测台 31上设置有容置液晶屏的容置部及发 光光源， 所述发光光源设置在所述容置部下， 配置来照射所述容置部内的液 晶展。
根据本发明的实施例， 图 4为本发明第二实施例中镜头支撑台设置的采 集点分布俯视图，如图 4所示，所述镜头支撑台 32设置的采集点按右上角为 首之字形顺序 （即图示第一行右至左， 第二行左至右， 第三行再右至左的顺 序重复）依次为： 第一采集点 1、 第二采集点 2、 第三采集点 3、 第四采集点 4、 第五采集点 5、 第六采集点 6、 第七采集点 7、 第八采集点 8、 第九采集点 9。
所述第一采集点 1的第一光学镜头， 配置来扫描以所述第一采集点为坐 标原点的水平方向逆时针从 180度至 270度、 竖直方向各角度的范围， 以获 取所述液晶屏的光学参数。
所述第二采集点 2的第二光学镜头， 配置来扫描以所述第二采集点为坐 标原点的水平方向逆时针从 180度至 0度、 竖直方向各角度的范围， 以获取 所述液晶屏的光学参数。
所述第三采集点 3的第三光学镜头， 配置来扫描以所述第三采集点为坐 标原点的水平方向逆时针从 270度至 0度、 竖直方向各角度的范围， 以获取 所述液晶屏的光学参数。
所述第四采集点 4的第四光学镜头， 配置来扫描以所述第四采集点为坐 标原点的水平方向逆时针从 270度至 90度、竖直方向各角度的范围，以获取 所述液晶屏的光学参数。
所述第五采集点 5的第五光学镜头， 配置来扫描以所述第五采集点为坐 标原点的水平方向逆时针从 0度至 360度、 竖直方向各角度的范围， 以获取 所述液晶屏的光学参数。 所述第六采集点 6的第六光学镜头， 配置来扫描以所述第六采集点为坐 标原点的水平方向逆时针从 90度至 270度、竖直方向各角度的范围，获取所 述液晶屏的光学参数。
所述第七采集点 7的第七光学镜头， 配置来扫描以所述第七采集点为坐 标原点的水平方向逆时针从 90度至 180度、竖直方向各角度的范围，以获取 所述液晶屏的光学参数。
所述第八采集点 8的第八光学镜头， 配置来扫描以所述第八采集点为坐 标原点的水平方向逆时针从 0度至 180度、 竖直方向各角度的范围， 以获取 所述液晶屏的光学参数。
所述第九采集点 9的第九光学镜头， 配置来扫描以所述第九采集点为坐 标原点的水平方向逆时针从 0度至 90度、竖直方向各角度的范围， 以获取所 述液晶屏的光学参数。
所述以各采集点为坐标原点的水平方向的 0度方向是指以该采集点为坐 标原点的坐标轴中， X轴的右半轴的方向。
相应的， 所述九个采集点对应的九个摄像头， 分别配置来采集对应区域 中所述液晶屏的图像。
根据本发明的实施例， 所述九个光学镜头和所述九个摄像头通过滑轨与 所述镜头支撑台 32连接。
这里， 由于液晶屏的大小不一样， 对于不同大小的液晶屏来说， 为保证 待检测液晶屏在检测时九个光学镜头和九个摄像头能均匀等距的分布在待检 测液晶屏的九个位置， 因此， 所述九个光学镜头和所述摄像头的位置也是可 调的。 当然， 本发明也不限于设置九个采集点， 可以根据液晶屏的具体形状 和尺寸进行调整。 光学镜头和摄像头与镜头支撑台的连接也不限于是通过滑 轨连接， 也可以通过其他方式进行可调的连接。
图 5为本发明第二实施例提供的液晶屏的质量检测方法的流程示意图， 如图 5所示， 包括：
步骤 501 : 检测液晶屏九个方位的光学参数， 采集液晶屏九个方位的图 像；
这里，可通过均匀等距分布的光学镜头检测液晶屏九个方位的光学参数， 所述光学参数包括亮度值、 色度值、 色温值等； 通过均匀等距分布的摄像头 采集液晶屏九个方位的图像；
步骤 502: 判断所述九个方位的光学参数是否在预先设置的光学参数范 围内；
若步骤 502判断的结果为是， 执行步骤 503 ;
若步骤 502判断的结果为否， 执行步骤 504;
步骤 503 : 判断所述九个方位的图像是否与预先存储的图像一致； 若步骤 503判断的结果为是， 执行步骤 515;
若步骤 503判断的结果为否， 执行步骤 504;
步骤 504: 判断不良是否在同一平面内；
若步骤 504判断的结果为是， 则执行步骤 505;
步骤 505: 确定所述液晶屏为盒内不良， 继续执行步骤 515;
若步骤 504判断结果为否， 则执行步骤 506;
步骤 506: 判断液晶屏是否破损；
若步骤 506判断的结果为是， 则执行步骤 507;
步骤 507: 确定所述液晶屏为破损类不良， 继续执行步骤 515;
若步骤 506判断的结果为否， 则继续执行步骤 508;
步骤 508: 判断所述不良是否是通过 L0画面发现；
若步骤 508判断的结果为是， 则执行步骤 509;
步骤 509: 确定所述不良为 POL类不良或线类不良， 继续执行步骤 515; 若步骤 508判断的结果为否， 则继续执行步骤 510;
步骤 510: 判断所述不良是否是通过 L255画面发现；
若步骤 510判断的结果为是， 则执行步骤 51 1 ;
步骤 51 1 : 确定所述不良为 BLU类不良， 继续执行步骤 515;
若步骤 510判断的结果为否， 则继续执行步骤 512;
步骤 512: 判断所述不良图片是否与预先存储的不良图像匹配； 若步骤 512判断的结果为是， 则执行步骤 513;
步骤 513: 输入不良名称， 继续执行步骤 515;
若步骤 512判断的结果为否， 则执行步骤 514;
步骤 514: 通过红灯闪烁或声音 ·艮警；
这里， 若所述不良既不是在 L0画面发现又不是在 L255画面发现， 则将 所述不良图像与存储的不良图像进行比较， 若通过比较显示存在与所述不良 图像相同的不良图像， 则记录所述不良图像的类型； 若所述不良图像与预先 存储的不良图像不一致， 则通过报警告知技术人员， 使技术人员进一步通过 人工判别不良类型。
步骤 515: 综合所有图像判定液晶屏的等级， 然后执行步骤 516;
步骤 516: 进一步判断所述液晶屏是否为最优级别；
若步骤 516判断的结果为是， 则执行步骤 517;
步骤 517: 将所述液晶屏从第一通道流出；
若步骤 516判断的结果为否， 则继续执行步骤 518;
这里， 若所述液晶屏无不良出现， 则确定所述液晶屏为最优级别， 将所 述液晶屏从第一通道流出， 进行下一道工序。
步骤 518: 判断所述液晶屏是否为盒内不良；
若步骤 518判断的结果为是， 则执行步骤 519;
步骤 519: 判定所述液晶屏为最低级别，返回执行步骤 517, 所述液晶屏 从第一通道流出， 进行下一道工序；
若步骤 518判断的结果为否， 继续执行步骤 520;
这里， 若所述液晶屏出现盒内不良， 则说明所述液晶屏已无法修复但还 可以使用， 确定所述液晶屏为最低级别， 将所述液晶屏从第一通道流出进行 下一道工序。
步骤 520: 判断所述液晶屏是否为破损类不良；
若步骤 520判断的结果为是， 则执行步骤 521 ;
步骤 521： 将所述液晶屏从第二通道流出；
若步骤 520判断的结果为否， 则执行步骤 522;
步骤 522: 将所述液晶屏从第三通道流出；
这里， 若所述液晶屏出现破损类不良， 则说明所述液晶屏已无法修复且 无法正常使用， 将所述液晶屏从第二通道流出， 做报废处理； 若所述液晶屏 出现 POL类不良、线类不良或 BLU类不良，说明此所述液晶屏还可以修复， 将所述液晶屏从第三通道流出， 做返工处理。
本发明实施例提供的液晶屏的质量检测方法、 装置及设备， 通过检测所 述液晶屏， 获取所述液晶屏的光学参数； 采集所述液晶屏的图像； 并在判定 所述光学参数不在所述预设的光学参数范围内和 /或所述采集的液晶屏的图 像与预先存储的图像不一致时， 确定所述液晶屏为不良。 如此， 能够有效地 区分出产品的不良类型， 并记录产品的不良位置， 从而能够有效减少由于人 为视觉差异等造成的误判或漏检， 提高产品的出厂品质及良品率。
以上实施例仅以示例方式说明本发明， 而并非对本发明的限制， 所属技 术领域的普通技术人员， 在不脱离本发明的精神和范围的情况下， 还可以做 出各种变化和变型， 而这些变化和变型及其等同物都应属于本发明的范围。

Claims

权利要求书
1、 一种液晶屏的质量检测方法， 包括：
获取所述液晶屏的光学参数；
采集所述液晶屏的图像； 以及
若判定所述光学参数不在预设的光学参数范围内和 /或所述采集的液晶 屏的图像与预先存储的图像不一致时， 确定所述液晶屏为不良。
2、 根据权利要求 1所述的方法， 其中所述确定所述液晶屏为不良包括： 判定所述光学参数不在所述预设的光学参数范围内和 /或所述采集的液 晶屏的图像与预先存储的图像不一致之后， 判断不良是否在同一平面内， 若 确定所述不良在同一平面内， 则确定所述液晶屏为盒内不良。
3、 根据权利要求 2所述的方法， 还包括：
若确定所述不良不在同一平面内， 判断所述液晶屏是否破损， 若确定所 述液晶屏破损， 则确定所述液晶屏为破损类不良。
4、 根据权利要求 3所述的方法， 还包括：
确定所述液晶屏没有破损后， 根据所述不良的画面判断不良类型； 所述根据所述不良的画面判断不良类型包括：
若所述不良通过灰阶 L0画面发现， 则确定所述不良为偏光片 POL类不 良或线类不良； 以及
若所述不良通过灰阶 L255画面发现，则确定所述不良为背光源组件 BLU 类不良。
5、 根据权利要求 4所述的方法， 还包括： 则将所述不良图像与预先存储的不良图像比较， 若通过比较确定所述不良图 像与预先存储的不良图像一致， 确定所述不良名称。
6、 根据权利要求 1至 5任一项所述的方法， 还包括： 确定不良类型后， 记录所述不良的位置坐标。
7、 根据权利要求 5所述的方法， 还包括：
若所述液晶屏无不良出现， 则确定所述液晶屏为最优级别， 将所述液晶 屏从第一通道流出； 若所述液晶屏出现盒内不良， 则确定所述液晶屏为最^ ^级别， 将所述液 晶屏从第一通道流出；
若所述液晶屏出现破损类不良， 将所述液晶屏从第二通道流出， 做报废 处理； 以及
若所述液晶屏出现 POL类不良、 线类不良或 BLU类不良， 将所述液晶 屏从第三通道流出， 做返工处理。
8、一种液晶屏的质量检测装置， 包括： 检测单元、 图像采集单元和分析 处理单元； 其中，
所述检测单元配置来检测所述液晶屏， 以获取所述液晶屏的光学参数， 并将所述光学参数发送给所述分析处理单元；
所述图像采集单元配置来采集所述液晶屏的图像， 并将所述采集的液晶 屏的图像发送给所述分析处理单元； 以及
所述分析处理单元配置来在判断所述光学参数不在所述预设的光学参数 范围内和 /或所述采集的液晶屏的图像与预先存储的图像不一致时，确定所述 液晶屏为不良。
9、根据权利要求 8所述的装置， 其中所述分析处理单元包括： 判断单元 和类型确定单元； 其中，
所述判断单元配置来判断所述光学参数是否在预先设置的光学参数范围 内， 以及判断所述采集的液晶屏的图像与预先存储的图像是否一致； 以及 所述类型确定单元配置来根据所述判断单元的判断结果确定不良类型。
10、 根据权利要求 9所述的装置， 其中所述判断单元配置来在判断所述 光学参数不在所述预先设置的光学参数范围内和 /或所述采集的液晶屏的图 像与预先存储的图像不一致之后， 判断不良是否在同一平面内； 以及
所述类型确定单元配置来若所述判断单元的判断结果为不良在同一平面 内， 确定所述液晶屏为盒内不良。
11、根据权利要求 10所述的装置，其中所述判断单元还配置来若确定不 良不在同一平面内， 判断所述液晶屏是否破损； 以及
所述类型确定单元，还配置来若所述判断单元的判断结果为液晶屏破损， 确定所述液晶屏为破损类不良。
12、根据权利要求 11所述的装置，其中所述判断单元还配置来确定所述 液晶屏没有破损后， 根据所述不良的画面判断不良类型； 以及 所述类型确定单元还配置来当所述判断单元的判断结果为所述不良通过 灰阶 L0画面发现， 则确定所述不良为 POL类不良或线类不良； 当所述判断 单元的判断结果为所述不良通过灰阶 L255画面发现，则确定所述不良为 BLU 类不良。
13、根据权利要求 12所述的装置，其中所述判断单元还配置来确定所述 良图像与预先存储的不良类型图像进行比较； 以及
所述类型确定单元还配置来若所述判断单元确定所述不良图像与预先存 储的不良图像一致， 确定所述不良名称。
14、根据权利要求 8至 13任一项所述的装置，其中所述分析处理单元还 包括坐标获取单元， 配置来确定不良类型后， 记录所述不良的位置坐标。
15、根据权利要求 14所述的装置，其中所述分析处理单元还包括分发单 元， 配置来根据所述液晶屏的优劣及不良类型， 分发所述液晶屏至不同的通 道流出； 包括：
若所述液晶屏无不良出现， 则确定所述液晶屏为最优级别， 将所述液晶 屏分发至第一通道流出；
若所述液晶屏出现盒内不良， 则确定所述液晶屏为最^ 级别， 将所述液 晶屏分发至第一通道流出；
若所述液晶屏出现破损类不良， 将所述液晶屏分发至第二通道流出， 做 才艮废处理； 以及
若所述液晶屏出现 POL类不良、 线类不良或 BLU类不良， 将所述液晶 屏分发至第三通道流出， 做返工处理。
16、 一种液晶屏的质量检测设备， 包括： 检测台， 镜头支撑台， 连接所 述检测台和所述镜头支撑台的滑轨， 和主机； 其中，
所述检测台配置来放置待检测的液晶屏；
所述镜头支撑台设置有多个采集点， 配置来对所述检测台上容置的液晶 屏进行光学采集， 其中每个采集点各设置有光学镜头和光学摄像头； 以及 所述主机与所述镜头支撑台设置的光学镜头和光学摄像头电连接， 配置 来获取所述液晶屏的光学参数以及采集所述液晶屏的图像； 并在判定所述光 学参数不在预设的光学参数范围内和 /或所述采集的液晶屏的图像与预先存 储的图像不一致时， 确定所述液晶屏为不良。
17、根据权利要求 16所述的设备，其中所述镜头支撑台设置有九个采集 点， 所述九个采集点分别为所述镜头支撑台的四个角的顶点、 四个边的中点 及所述镜头支撑台的中心点。
18、根据权利要求 16所述的设备，其中所述检测台上设置有容置液晶屏 的容置部及发光光源， 所述发光光源设置在所述容置部下， 配置来照射所述 容置部内的液晶屏。
19、根据权利要求 17所述的设备，其中所述镜头支撑台设置的采集点按 右上角为首之字形顺序依次为： 第一采集点、 第二采集点、 第三采集点、 第 四采集点、 第五采集点、 第六采集点、 第七采集点、 第八采集点、 第九采集 点；
所述第一采集点的第一光学镜头配置来扫描以所述第一采集点为坐标原 点的水平方向逆时针从 180度至 270度、 竖直方向各角度的范围， 以获取所 述液晶屏的光学参数；
所述第二采集点的第二光学镜头配置来扫描以所述第二采集点为坐标原 点的水平方向逆时针从 180度至 0度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第三采集点的第三光学镜头配置来扫描以所述第三采集点为坐标原 点的水平方向逆时针从 270度至 0度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第四采集点的第四光学镜头配置来扫描以所述第四采集点为坐标原 点的水平方向逆时针从 270度至 90度、竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第五采集点的第五光学镜头配置来扫描以所述第五采集点为坐标原 点的水平方向逆时针从 0度至 360度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第六采集点的第六光学镜头配置来扫描以所述第六采集点为坐标原 点的水平方向逆时针从 90度至 270度、竖直方向各角度的范围， 以获取所述 液晶屏的光学参数； 所述第七采集点的第七光学镜头配置来扫描以所述第七采集点为坐标原 点的水平方向逆时针从 90度至 180度、竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第八采集点的第八光学镜头配置来扫描以所述第八采集点为坐标原 点的水平方向逆时针从 0度至 180度、 竖直方向各角度的范围， 以获取所述 液晶屏的光学参数；
所述第九采集点的第九光学镜头配置来扫描以所述第九采集点为坐标原 点的水平方向逆时针从 0度至 90度、竖直方向各角度的范围，以获取所述液 晶屏的光学参数； 以及
相应的所述九个采集点对应的九个摄像头配置来采集对应的区域所述液 晶屏的图像。
20、 根据权利要求 17-19任一项所述的设备， 其中所述九个光学镜头和 所述九个摄像头通过滑轨与所述镜头支撑台连接。
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