Method for detecting sticked conductive film by laser
A conductive film, laser detection technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of equipment missed detection, discrepancy, poor adhesion of the conductive film layer 16, etc., to achieve accurate attachment errors and reduce detection errors. Effect
Inactive Publication Date: 2007-04-11
AU OPTRONICS CORP
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But when the gold finger 14 grayscale variation on the substrate 12 is large, as shown in Figure 1A and Figure 1B, the grayscale sampled when the device detects the conductive film layer 16 is different from the image sampling grayscale value set in the device. different
Therefore, the conductive film layer 16 is attached normally, but the equipment gives an alarm of poor attachment.
Or the conductive film layer 16 is poorly attached, but the equipment does not give an alarm for poor attachment and misses the inspection
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[0025] In order to have a further understanding and understanding of the structural features and the achieved effects of the present invention, I would like to provide a preferred embodiment and a detailed description, as follows:
[0026] Please refer to Fig. 2A, Fig. 2B and Fig. 2C, which are the flow chart of the preferred embodiment of the present invention and the side view and top view of the conductive film attached to the substrate. As shown in the figure, the present invention utilizes laser detection to attach the conductive film Method; first, proceed to step S1, provide a substrate 22, have a golden finger 24 above the substrate 22, and place a conductive thin film layer 26 above the golden finger 24; then proceed to step S2, use a laser light source 27 to irradiate the conductive thin film layer 26 Then, proceed to step S3, use an image sensor 28 to receive the reflected light of the conductive film layer 26; then, proceed to step S4, use a software to calculate th...
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The invention discloses a method for detecting the attached electric-conducted film with the laser. In which, it provides a baseboard with a golden finger on its top, and an electric-conducted film is laid on the top of the golden finger. Then, it uses a laser light source to illuminate the film. Then, it uses a image sensor to receive the reflection of light or the reflection of light and refraction of light. Then, it gets the first thickness through the calculation about the reflection of light via software, or it gets the second thickness through the calculation about the reflection of light and refraction of light. Finally, if the thickness is less than the first or the second threshold value, then the film layer is attached it wrong.
Description
technical field [0001] The invention relates to a method for detecting and pasting a conductive film, in particular to a method for detecting and pasting a conductive film by using a laser. Background technique [0002] Anisotropic Conductive Film (ACF) is an adhesive film containing metal particles in a thermosetting or thermoplastic resin adhesive. The main function is only to provide electrical conduction in the vertical direction of the two joint objects, and it has an insulating effect for the horizontal direction, and has the characteristics of bonding and conduction. High-density wire connection between panel and circuit board. At present, the circuit board of the display is mostly attached with an anisotropic conductive adhesive film. The known detection method of anisotropic conductive adhesive film is that the equipment personnel use a photo-charge coupled device (CCD) sensor to directly sample the image of the position where the anisotropic conductive adhesive f...
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Inventor 曾义弘陈清隆王俊凯
Owner AU OPTRONICS CORP