CAPACITIVE INPUT DEVICE

• US 20160162077A1
• Filed: 02/12/2016
• Published: 06/09/2016
• Est. Priority Date: 08/23/2013
• Status: Active Grant

• Current Assignee: Alps Alpine Co., Ltd.
• Original Assignee: ALPS Electric Company Limited (Alps Alpine Co., Ltd.)
• Inventors: Kiyoshi, Tsutomu, Oizumi, Mitsuo, Takahashi, Hidekazu
• Granted Patent: US 10,191,602 B2
• Time in Patent Office: Days
• CPC Class Codes: C09D 181/08 Polysulfonates
• CPC Class Codes: C09D 5/24 Electrically-conducting paints conductive materials H01B1/00
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: H01H 2215/006 Only mechanical function
• CPC Class Codes: H01H 2239/006 Containing a capacitive switch or usable as such
• CPC Class Codes: H03K 17/962 Capacitive touch switches
• CPC Class Codes: H03K 2217/960755 Constructional details of capacitive touch and proximity switches

Abstract

A capacitive input device having a curved surface shape includes: an external body molded with a synthetic resin, the external body having an external curved surface facing a user; a film base, which is integrally provided so as to conform to the internal curved surface of the external body; a conductive layer made of conductive macromolecules, the conductive layer being formed on an opposite surface of the film base, the opposite surface being opposite to a bonded surface, of the film base, that is bonded to the external body; and wiring layers that are electrically connected to the conductive layer.

Claims

1. A capacitive input device having a curved surface shape, the capacitive input device comprising:

an external body molded with a synthetic resin, the external body having an external curved surface facing a user;

a film base, which is integrally provided so as to conform to an internal curved surface of the external body;

a conductive layer made of a conductive macromolecule, the conductive layer being disposed on an opposite surface of the film base, the opposite surface being opposite to a surface of the film base on the external body side; and

a wiring layer that is electrically connected to the conductive layer.

2. The capacitive input device according to claim 1, wherein the conductive macromolecule comprises a mixture of poly (3,4-ethylenedioxythiophene) (PEDOT) and polystyrene sulfonate (PSS).

3. The capacitive input device according to claim 1, wherein the external body, the film base, and the conductive layer are transparent.

4. The capacitive input device according to claim 1, further comprising a protective layer stacked so as to cover the conductive layer.