Abstract: A waterproof structure of the present invention is for an electronic device including a housing including a first case member that has a first abutting face, and a second case member that has a second abutting face that faces the first abutting face. A water repellent treatment is applied to the first and second abutting faces, and two or more boundaries that change from a region having a relatively small liquid droplet contact angle to a region having a relatively large liquid droplet contact angle are provided along a liquid infiltration direction at an abutting ends portion of the first and second case members.

Abstract: An electronic device of the present invention includes: a first case and a second case that are oppositely provided in a slidable manner; and a flexible flat cable that is provided in a state of having a U-shaped bend portion in a gap between the cases, and connects circuit substrates respectively housed in the cases, on a facing surface of at least one case among facing surfaces of the cases, a step that pushes up the flexible flat cable from the facing surface of the one case to the gap side is provided, and the step is provided in a region of non-contact with the U-shaped bend portion which is displaced in a sliding direction of the cases during sliding operation of the cases.

Abstract: A waterproof structure of the present invention is for an electronic device including a housing including a first case member that has a first abutting face, and a second case member that has a second abutting face that faces the first abutting face. A water repellent treatment is applied to the first and second abutting faces, and two or more boundaries that change from a region having a relatively small liquid droplet contact angle to a region having a relatively large liquid droplet contact angle are provided along a liquid infiltration direction at an abutting ends portion of the first and second case members.

Abstract: An electronic device of the present invention includes: a first case and a second case that are oppositely provided in a slidable manner; and a flexible flat cable that is provided in a state of having a U-shaped bend portion in a gap between the cases, and connects circuit substrates respectively housed in the cases, on a facing surface of at least one case among facing surfaces of the cases, a step that pushes up the flexible flat cable from the facing surface of the one case to the gap side is provided, and the step is provided in a region of non-contact with the U-shaped bend portion which is displaced in a sliding direction of the cases during sliding operation of the cases.