Patent ID: 9564531
Date: 2017-02-07
CPC Classifications: H01L

Claim:
1. A thin film transistor comprising: a semiconductor channel disposed between a drain electrode and a source electrode; and a gate insulating layer disposed between the semiconductor channel and a gate electrode, wherein the semiconductor channel includes a first metal oxide, the gate insulating layer includes a second metal oxide, the second metal oxide not being identical to the first metal oxide, at least a portion of the gate insulating layer that includes the second metal oxide is in direct contact with the semiconductor channel, the first metal oxide and the second metal oxide commonly include at least one of indium tin oxide (ITO), zinc tin oxide (ZTO), and indium zinc tin oxide (IZTO), and at least one of the first metal oxide and the second metal oxide includes one of cerium (Ce), hafnium (Hf), tantalum (Ta), lanthanum (La), niobium (Nb), yttrium (Y) and combinations thereof.