Adhesive tape and mounting method for image sensor therewith
A technology of image sensor and installation method, applied in the direction of bonding method, film/sheet adhesive, non-polymer adhesive additive, etc., can solve the problem of poor optical inspection, poor identification, and identification of adhesive tape It can protect the surface of the image sensor, improve operability and production efficiency, and ensure the effect of heat resistance and visibility.
Inactive Publication Date: 2011-04-13
NITTO DENKO CORP
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Problems solved by technology
However, since the polyimide film has a brown hue, the visibility is poor, and the total light transmittance of the film is low, so it is difficult to inspect with the tape attached during the optical inspection after the component is mounted.
[0005] In addition, for an adhesive tape using a film with excellent transparency such as polyethylene terephthalate and polyethylene naphthalate, the adhesive tape turns yellow ( yellowing), the hue of the adhesive tape changes and the visibility decreases, so there may be problems in the optical inspection after component mounting
Method used
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Embodiment 1
[0066] On a 25μm thick substrate made of polyethylene naphthalate, it is coated on the adhesive composition with 0.5wt% of an antioxidant (manufactured by Chiba Specialty, イルガノツクス) added to the total solid content The solution of the acrylic adhesive was dried to prepare an adhesive tape having an adhesive layer having a thickness of 10 μm. After heating the adhesive tape at 180°C for about 1 hour, the adhesive force measured in accordance with JIS Z0237 was 2.0N / 19mm width, the heat shrinkage rate was 0.15%, and the color of the tape after heating at 180°C for 1 hour was L * a * b * B of the chromaticity diagram * The value is 2.7.
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Abstract
The invention provides a heat-resistant adhesive tape having high visibility and a method for the mounting of an image sensor by using the tape as a protection adhesive tape for a solid-state image sensing device. The adhesive tape has an adhesive layer on at least one surface and has a chroma of <=5.0 in terms of b<*> in the L<*>a<*>b<*> color specification system in conformity to JIS Z 8729 after heating at 180 DEG C for 1 hr. The invention further provides an adhesive tape containing an oxidation inhibitor in the adhesive layer in an amount of 0.1-10 wt.% based on the total solid component of the adhesive agent.
Description
Technical field [0001] The present invention relates to a heat-resistant adhesive tape and an installation method of an image sensor using the adhesive tape. Background technique [0002] Image sensors using solid-state imaging devices have been widely used in digital cameras and video cameras in recent years. In the manufacturing process represented by the mounting of these image sensors on the substrate side, there is a high possibility that the surface damage or dirt adhesion of the image sensor directly affects imaging. Therefore, an adhesive tape is used as a surface protection tape and attached to the photosensitive portion side of the image sensor to avoid damage or dirt adhesion during the installation and manufacturing processes. [0003] On the other hand, the component mounting process for mounting the image sensor on a substrate or the like includes a process performed in a high temperature region such as soldering. However, most of the existing surface protection adh...
Claims
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IPC IPC(8): C09J7/02H01L27/146H04N5/335C09J5/00C09J11/06C09J133/00C09J201/00H01L27/14H04N25/00
CPCC09J7/20C09J9/00C09J2203/326
Inventor 近藤广行寺岛正
Owner NITTO DENKO CORP
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