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TRANSISTOR, SEMICONDUCTOR DEVICE, AND ELECTRONIC DEVICE

  • US 20160233340A1
  • Filed: 02/08/2016
  • Published: 08/11/2016
  • Est. Priority Date: 02/09/2015
  • Status: Active Grant
First Claim
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1. A transistor comprising:

  • a first oxide semiconductor layer, a second oxide semiconductor layer, and a third oxide semiconductor layer;

    a first electrode, a second electrode, and a third electrode; and

    a first insulating layer and a second insulating layer,wherein the first oxide semiconductor layer has an island shape and comprises a first region, a second region, and a third region,wherein the third region is between the first region and the second region,wherein the first electrode is over the first region,wherein the second electrode is over the second region,wherein the first insulating layer is over the first electrode and the second electrode with the second oxide semiconductor layer therebetween,wherein the second oxide semiconductor layer comprises a first opening,wherein the first insulating layer comprises a second opening,wherein the first opening and the second opening each overlap with the third region,wherein the third electrode is over the third region with the third oxide semiconductor layer and the second insulating layer therebetween,wherein the second oxide semiconductor layer covers a first side surface, a second side surface, the first region, and the second region in the first oxide semiconductor layer, andwherein the third oxide semiconductor layer covers third side surfaces and the third region in the first oxide semiconductor layer.

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