Memory device and semiconductor device

Abstract

The present invention is to provide a semiconductor device in which the step can be simplified, the manufacturing cost can be suppressed, and the decrease in yield can be suppressed. A semiconductor device of the present invention includes an antenna, a storage element, and a transistor, wherein a conductive layer serving as an antenna is provided in the same layer as a conductive layer of the transistor or the storage element. This characteristic makes it possible to omit an independent step of forming the conductive layer serving as an antenna and to conduct the step of forming the conductive layer serving as an antenna at the same time as the step of forming a conductive layer of another element. Therefore, the manufacturing step can be simplified, the manufacturing cost can be suppressed, and the decrease in yield can be suppressed.

Description

TECHNICAL FIELD[0001]The present invention relates to a semiconductor device which can send and receive data wirelessly.BACKGROUND ART[0002]In recent years, development of semiconductor devices which send and receive data wirelessly has been extensively advanced. Such semiconductor devices are referred to as IC chips, IC tags, RF chips, RF tags, wireless chips, wireless tags, electronic chips, electronic tags, wireless processors, wireless memories, or the like (for example, see Reference 1: Japanese Patent Application Laid-Open No. 2000-20665).[0003]Some of such semiconductor devices include antennas, storage elements, and transistors. The antenna is provided to receive an electric wave and the storage element is provided to store some kind of information. The transistor is provided as an element for constituting a part of a logic circuit which controls operation of the antenna, the storage element, and the like.DISCLOSURE OF INVENTION[0004]As above, a semiconductor device which se...

AI Technical Summary

Benefits of technology

[0004]As above, a semiconductor device which sends and receives data wirelessly preferably has a structure including three of a transistor, a storage element, and an antenna. However, such a structure has problems in that the number of steps increases, the manufacturing cost increases, the yield decreases, and so on. Therefore, it is an object of the present invention to provide a semiconductor device in which the step is simplified, the manufacturing cost is suppressed, and the decrease in the yield is suppressed.

[0005]In the present invention made in view of the above problems, a conductive layer serving as an antenna is provided in the same layer as a conductive layer of another element. Moreover, the step of forming the conductive layer serving as an antenna is not provided independently, but the step of forming the conductive layer serving as an antenna is conducted at the same time as the step of forming a conductive layer of another element. This makes it possible to simplify the manufacturing step.

[0006]Further, the present invention provides a semiconductor device including a storage element having a simple structure in which a layer containing an organic compound is sandwiched between a pair of conductive layers. This characteristic can achieve the simplification of the manufacturing step and moreover provide a semiconductor device including a nonvolatile and additionally recordable storage element.

[0048]In the semiconductor device of the present invention having any one of the above structures, the conductive layer serving as an antenna is provided in the same layer as a conductive layer in a transistor or a storage element. This makes it possible to omit the independent step of forming the conductive layer serving as an antenna and to conduct the step of forming the conductive layer serving as an antenna at the same time as the step of forming a conductive layer of another element. Therefore, the manufacturing step can be simplified.

Problems solved by technology

However, such a structure has problems in that the number of steps increases, the manufacturing cost increases, the yield decreases, and so on.