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US 8,465,138 B2Granted
Semiconductor device, ink cartridge, and electronic device
AssigneeSeiko Epson Corporation
InventorNobuaki Hashimoto
Life of this patent
Estimating the term…
Abstract
A semiconductor device includes: a semiconductor substrate including an active element formation face on which an active element is formed; detection electrodes detecting a remaining amount of ink by being wet in the ink; an antenna transmitting and receiving information; a storage circuit storing information relating to the ink; and a control circuit controlling the detection electrodes, the antenna, and the storage circuit.
Claims8
An ink cartridge used for an electronic device unit including an antenna, the ink cartridge comprising:
- an ink cartridge casing including a container that accommodates ink;
- and
- a semiconductor device that detects and manages information relating to the ink accommodated in the container, the semiconductor device including:
- a semiconductor substrate including an active element formation face on which an active element and a first electrode electrically connected to the active element are formed;
- a dielectric layer formed on the active element formation face;
- detection electrodes detecting a remaining amount of ink by being wet in the ink, the detection electrodes being formed on the dielectric layer;
- an antenna transmitting and receiving information, the antenna being formed on the dielectric layer;
- a first interconnection connecting the first electrode and the detection electrodes, a part of the first interconnection being formed on the dielectric layer;
- and
- a storage circuit storing information relating to the ink.
7 more elements
An electronic device comprising:
- an ink cartridge;
- and
- an electronic device unit,
- the ink cartridge including:
- an ink cartridge casing including a container that accommodates ink;
- and
- a liquid sensor including a semiconductor device that detects and manages information relating to the ink accommodated in the container,
- the semiconductor device including:
- a semiconductor substrate including an active element formation face on which an active element and a first electrode electrically connected to the active element are formed;
- a dielectric layer formed on the active element formation face;
- detection electrodes detecting a remaining amount of ink by being wet in the ink, the detection electrodes being formed on the dielectric layer;
- an antenna transmitting and receiving information, the antenna being formed on the dielectric layer;
- a first interconnection connecting the first electrode and the detection electrodes, a part of the first interconnection being formed on the dielectric layer;
- and
- a storage circuit storing information relating to the ink.
12 more elements
Dependencies are inferred from the claim text.