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Semiconductor Energy Laboratory Assigned Patent

Storage device and writing method of the same

Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, Japan, has been assigned a patent (8,929,128) developed by Shionoiri Yutaka,and Inoue Seiko, Kanagawa, Japan, for a “storage device and writing method of the same.

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A storage device in which held voltage is prevented from decreasing due to feedthrough in writing data to the storage device at high voltage is provided. The storage device includes a write circuit, a bit line, a word line, a transistor, and a capacitor. A gate of the transistor is electrically connected to the word line. One of a source and a drain of the transistor is electrically connected to the bit line. The other of the source and the drain of the transistor is electrically connected to one terminal of the capacitor. The other terminal of the capacitor is electrically connected to a ground. The write circuit includes an element holding write voltage and a circuit gradually decreasing voltage from the element holding write voltage. The write voltage is output from the write circuit to the word line.

The patent application was filed on May 13, 2013 (13/892,458)

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