Capacitance type sensor

• US 20010011994A1
• Filed: 02/07/2001
• Published: 08/09/2001
• Est. Priority Date: 02/08/2000
• Status: Active Grant

• Current Assignee: Nitta Corporation, Wacoh Company
• Original Assignee: Nitta Corporation, Wacoh Company
• Inventors: Okada, Kazuhiro, Morimoto, Hideo
• Granted Patent: US 6,940,495 B2
• Time in Patent Office: Days
• US Class Current: 345/156
• CPC Class Codes: G06F 3/0338 with detection of limited linear or angular displacement of an operating part of the device from a neutral position, e.g. isotonic or isometric joysticks

Abstract

A capacitance type sensor includes a substrate, a group of electrodes fixed on an upper face of the substrate, a movable electrode plate having an electrode on its lower side and a gap between the group of fixed electrodes on the substrate and the electrode on the movable electrode plate. The gap is formed with a solder layer, a conductive elastomer layer, a conductive paint layer, or a conductive adhesive material layer provided on the substrate. The electrode on the movable electrode plate is made of conductive rubber plate or conductive elastomer plate.

Claims

1. A capacitance type sensor comprising;

a substrate;

a group of fixed electrodes provided on an upper face of said substrate;

a movable electrode plate having an electrode on a lower face thereof; and

a gap provided between said group of fixed electrodes on said substrate and said electrode on said movable electrode plate, said gap being formed with a solder layer provided on said substrate.

3. A capacitance type sensor according to

claim 1

, wherein said electrode on said movable electrode plate is made of one of conductive rubber plate and conductive elastomer plate.

2. A capacitance type sensor comprising;

a substrate;

a group of fixed electrodes provided on an upper face of said substrate;

a movable electrode plate having an electrode on a lower face thereof; and

a gap provided between said group of fixed electrodes on said substrate and said electrode on said movable electrode, said gap being formed with one of a conductive elastomer layer, a conductive paint layer and a conductive adhesive material layer provided on said substrate.

4. A capacitance type sensor according to

claim 2

, wherein said electrode on said movable electrode plate is made of one of conductive rubber plate and conductive elastomer plate.