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US 6,690,362 B1Granted
Touch switch with thermo-chromatic layers
AssigneeSony Corporation
InventorsShigeki Motoyama, Hirokazu Nakayoshi, Shun Kayama, Yasuhiro Kataoka, Toshitaka Kawashima, Junichi Ohsako
Life of this patent
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Abstract
An input device and an electronic apparatus using such an input device capable of providing visual amusement at the time of operating thereof and allowing the down sizing and thinning are provided. The input device has a reversible chromatic layer exhibiting color change in response to temperature change, and a sheet-type input portion laminated on the reversible chromatic layer and activates ON operation upon being pressed.
Claims13
An input device comprising:
- a reversible chromatic layer having at least two coatings, each of said at least two coatings exhibiting color change in response to temperature change;
- and
- a sheet-type input portion laminated on said reversible chromatic layer and activates ON operation upon being pressed,
- wherein said reversible chromatic layer is located on a rear surface of said sheet-type switch portion and an input operation is effected by direct contact with said sheet-type switch portion.
1 more element
An electronic apparatus having an input device, wherein said input device comprising:
- a reversible chromatic layer having at least two coatings, each of said at least two coatings exhibiting color change in response to temperature change;
- and
- a sheet-type input portion stacked on said reversible chromatic layer and activates ON operation upon being pressed, wherein:
- said sheet-type input portion is exposed outward within a window provided to a housing of said electronic apparatus,
- said reversible chromatic layer is located on a rear surface of said sheet-type input portion, and
- an input operation is effected by direct contact with said sheet-type switch portion.
3 more elements
Dependencies are inferred from the claim text.