Polarizing film defect detection system and method

A defect detection and polarizing film technology, which is applied in measuring devices, material analysis through optical means, instruments, etc., can solve problems such as inability to distinguish defect types and detection omissions

Pending Publication Date: 2020-11-13
恒美光电股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose: In order to overcome the problems of detection omission and inability to distinguish defect types in the prior art, the present invention provides a polarizing film defect detection system and method

Method used

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  • Polarizing film defect detection system and method
  • Polarizing film defect detection system and method
  • Polarizing film defect detection system and method

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like figure 1 As shown, a polarizing film defect detection system includes a detection unit, a transmission unit, and an analysis unit.

[0027] The conveying unit includes a driving roller 5 and a driven roller 6 , the polarizing film 1 is stretched between the driving roller 5 and the driven roller 6 , and is continuously conveyed under the drive of the driving roller 5 . A certain distance is maintained between the driving roller 5 and the driven roller 6 to ensure the flatness of the polarizing film 1 .

[0028] The detection unit includes a camera unit 2, a lighting unit 3, and a light-shielding fence 4. The camera unit 2 and the lighting unit 3 are arranged on both sides of the polarizing film 1. The angle A between the perpendiculars of the film 1 is 0°; the vertical distance between the camera unit 2 and the polarizing film 1 is 2000mm. The camera uni...

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PUM

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Abstract

A polarizing film defect detection system disclosed by the present invention comprises a detection unit, a transmission unit and an analysis unit. The transmission unit comprises a driving roller anda driven roller, and a polarizing film is tensioned between the driving roller and the driven roller and is driven by the driving roller to move. The detection unit comprises a camera unit, an illumination unit and a shading fence, the camera unit and the illumination unit are arranged on the two sides of the polarizing film, and the shading fence is arranged between the illumination unit and thepolarizing film. The analysis unit is a computer system, is electrically connected with the camera unit and is used for collecting, analyzing and processing images shot by the camera unit and storingdata. According to the polarizing film defect detection system and method provided by the invention, detection is carried out in a state in which the polarizing film is continuously conveyed, detection omission cannot be caused, and air streak and impressed trace defects on the polarizing film can be detected.

Description

technical field [0001] The invention relates to a polarizing film defect detection system and method, belonging to the technical field of polarizing film production and testing. Background technique [0002] Polarizing film is the main optical component in the production of liquid crystal display panels. Polarizing film provides the transmitted light needed to form images and has a great influence on the quality of display panels. [0003] The polarizing film may be formed by attaching protective films to both surfaces of the polarizing device and applying a PSA adhesive to at least one outer surface of the polarizing device. However, in the process of manufacturing optical films, the following phenomena may occur: when the process conditions change or the film materials produce joints, the film is pressed and squeezed; due to the air infiltrated into the film or the defect of the equipment hardware changes, the film is squeezed ; and due to other external forces, the air i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/896
CPCG01N21/896G01N21/8851G01N2021/8854G01N2021/8887
Inventor 翟攀攀郭育诚张均铭
Owner 恒美光电股份有限公司
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