Semiconductor device, ink cartridge, and electronic device

1. 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.

2. The ink cartridge according to claim 1 , wherein the semiconductor device further comprises:

a second electrode formed on the active element; and

a second interconnection connected to the second electrode, a part of the second interconnection being formed on the dielectric layer, wherein

the antenna is a part of the second interconnection.

3. The ink cartridge according to claim 1 , further comprising:

a protective film covering the first interconnection; and

an opening in the protective film exposing at least a part of the first interconnection, wherein

the detection electrodes are constituted by the part of the first interconnection exposed through the opening.

4. The ink cartridge according to claim 1 , further comprising:

a protective film covering the first interconnection;

an opening in the protective film exposing at least a part of the first interconnection; and

a bump formed on the first interconnection exposed through the opening, wherein

the detection electrodes are constituted by the bump.

5. The ink cartridge according to claim 1 , wherein the semiconductor device further comprises:

a plated layer formed on a surface of the detection electrodes.

6. The ink cartridge according to claim 1 , further comprising:

a plurality of pairs of the detection electrodes formed along the depth direction of the container, the detection electrodes being arranged along a bottom face of the container.

7. The ink cartridge according to claim 1 , further comprising:

a plurality of the semiconductor devices formed along the depth direction of the container, the detection electrodes of at least one of the semiconductor devices being arranged along a bottom face of the container.

8. 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.