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The backlight module is one of the key components of LCD display panels, which functions to provide sufficient brightness and evenly distributed light sources to display images normally. Its luminous effect will directly affect the visual effect of the LCD display module, so the quality of the backlight module is particularly important. The AOI inspection machine for appearance defects of the backlight module can inspect the quality of the backlight module during the process to ensure its quality.
The appearance defects of the backlight module include: dirt, scratches, white sides, foreign objects, exposed film materials, film displacement, missing wires, tape climbing, concave frame, high and low backboards of the frame, missing tape, FPC offset, etc; The AOI inspection machine for appearance defects of backlight modules is used to replace manual visual inspection and achieve machine replacement.
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Project |
Performance index |
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Detection system |
Detection range |
Applicable size: 3-15 inches |
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Detection area |
Covering the film material, film frame, FPC and other areas of the entire backlight module |
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Testing items |
Film material defects: dirt, scratches, white sides, foreign objects |
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Defects in the film frame: exposed film material, film displacement, missing lines, tape climbing, inward sinking of the film frame, high and low backboards of the film frame |
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Missing defect: tape missing |
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Position offset: FPC offset |
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Detection accuracy |
The minimum detectable defect size is 200 × 200 μ m |
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Loss inspection rate |
0 DPPM |
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Over inspection rate |
5% |
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*Detection speed |
5-6s |
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Optical system |
Line scan camera+line scan camera (multi station combination shooting imaging) |
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Linear side light/linear coaxial light source |
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Customized professional optical lenses |
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Positioning |
Support panoramic positioning |
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Electromechanical system |
Golden frame structure+marble platform to enhance equipment stability and plane benchmark |
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Adopting servo motor and high-precision screw module, used for material code reading, visual positioning calibration and other mechanisms |
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Adopting SMC pneumatic and vacuum system |
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Loading and unloading methods |
CV transmission mode |
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Type of transportation |
CV transmission |
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Anti static belt conveyor |
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Software function |
Otek with proprietary intellectual property rights ® AOI Industrial Application Testing Software |
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Usability: intuitive and user-friendly graphical display interface, intelligent parameter setting function |
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Humanization: optional alarm function, and the alarm function can be customized (such as the defect rate upper limit alarm function) |
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Quick switching function: Different products can edit and call different recipes |
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Data security and fast positioning: Abnormal images can be 100% saved and retained: OK saved image+NG thrown material saved image; The image can be zoomed in and out, and the abnormal location of AOI inspection can be identified; Abnormal images stored for more than three months, with a minimum storage space of 2T |
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Advanced permission settings: equipped with a window for adjusting the interception rate and setting different permissions |
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Quick integration with customer information system interface: The detection result data can be saved and uploaded to the CIM system |
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Detection algorithm |
Processing algorithm |
Otek ® AOI detection algorithm+AI re evaluation system |
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Symbologies |
Supports reading multiple Vericode codes, corresponding to Normal Type, Normal HD Type Vericode, Outline Type Vericode, and DM Type Vericode |
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Others |
Safety protection |
Safety grating/safety door lock: used for personnel safety protection |
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FFU: Used for clean equipment to achieve Class 1000 and Class 100 cleanrooms in internal spaces |
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Static electricity: The material in contact with the product is made of anti-static material and equipped with an example air rod to eliminate static electricity |
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Defect image
The AVI inspection machine for appearance defects of 3C products is mainly used for defect detection of 3C product appearance, improving production line yield and the process control capability of manufacturers. The main application areas include mobile phones, laptops, tablets, LCD modules, wearable devices, televisions, etc. The detectable defects include surface scratches, burrs, damages, pressure marks, broken edges, notches, hidden cracks, burrs, warping, foreign objects, dirt, white spots, bubbles, pinholes, bumps, etc.
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Desktop module appearance AVI inspection is mainly used for defect detection of 3C product appearance, improving production line yield and the process control capability of manufacturers. Mainly detecting scratches, damages, pressure marks, broken edges, gaps, hidden cracks, burrs, warping, foreign objects, dirt, white spots, bubbles, pinholes, bumps and depressions, as well as component errors, leaks, reversals, excess, skewers, offsets, color differences, sizes, segments, etc.
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The backlight module is one of the key components of LCD display panels, which functions to provide sufficient brightness and evenly distributed light sources to display images normally. Its luminous effect will directly affect the visual effect of the LCD display module, so the quality of the backlight module is particularly important. The AOI inspection machine for appearance defects of the backlight module can inspect the quality of the backlight module during the process to ensure its quality. The appearance defects of the backlight module include: dirt, scratches, white sides, foreign objects, exposed film materials, film displacement, missing wires, tape climbing, concave frame, high and low backboards of the frame, missing tape, FPC offset, etc; The AOI inspection machine for appearance defects of backlight modules is used to replace manual visual inspection and achieve machine replacement.
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FPC bonding can achieve efficient and stable circuit connections. ACF adhesive is used for bonding TAB or COG of LCD panels, which requires high technical content and accuracy. After PCB bonding, ACF gold finger overflow defects often occur. This machine mainly detects ACF gold finger overflow defects to improve the production line yield.
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Address：Unit 204, No. 30 Guanri Road, Phase II Software Park, Xiamen City
Factory Address：1st Floor，Great Wall Business Building，76-78 Huli Avenue，Xiamen City
Consultation Hotline：86-0592-3799658、86-137 9991 1773（Switchboard）
Email : AOI@otek.com.cn
