Method for detecting sticked conductive film by laser
A conductive thin film and laser detection technology, which is applied in optics, nonlinear optics, instruments, etc., can solve problems such as missed detection of equipment, poor attachment of conductive film layer 16, and poor attachment of equipment, so as to achieve accurate attachment errors and reduce The effect of detecting errors
Inactive Publication Date: 2008-08-27
AU OPTRONICS CORP
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But when the gold finger 14 grayscale variation on the substrate 12 is large, such as Figure 1A and Figure 1B If the circle is selected, the gray scale sampled when the device detects the conductive film layer 16 is different from the image sampling gray value set in the device.
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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[0024] 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:
[0025] see Figure 2A , Figure 2B and Figure 2C , which is a flow chart of a preferred embodiment of the present invention and a side view and a top view of attaching a conductive film to a substrate. As shown in the figure, the present invention uses laser detection to attach a conductive film; first, step S1 is performed to provide a Substrate 22, a golden finger 24 is arranged above the substrate 22, and a conductive thin film layer 26 is arranged above the golden finger 24; then, proceed to step S2, and use a laser light source 27 to irradiate the top of the conductive thin film layer 26; then, proceed to step S3, use An image sensor 28 receives the reflected light of the conductive thin film layer 26; then, proceed to step S4, use a softwa...
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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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IPC IPC(8): G02F1/13
Inventor 曾义弘陈清隆王俊凯
Owner AU OPTRONICS CORP