公开(公告)号：US20170229490A1

公开(公告)日：2017-08-10

申请号：US15411724

申请日：2017-01-20

Applicant: Applied Materials, Inc.

Inventor： Xuena ZHANG ,  Dong-Kil YIM ,  Wenqing DAI ,  Harvey YOU ,  Tae Kyung WON ,  Hsiao-Lin YANG ,  Wan-Yu LIN ,  Yun-chu TSAI

IPC: H01L27/12 ,  H01L21/02 ,  H01L49/02

CPC classification number: H01L29/4908 ,  G02F1/136213 ,  G02F1/1368 ,  H01L21/02148 ,  H01L21/02159 ,  H01L21/02178 ,  H01L21/02181 ,  H01L21/02183 ,  H01L21/02186 ,  H01L21/02189 ,  H01L21/02192 ,  H01L21/02194 ,  H01L21/02274 ,  H01L21/0228 ,  H01L27/1222 ,  H01L27/124 ,  H01L27/1248 ,  H01L27/1255 ,  H01L27/1259 ,  H01L27/3258 ,  H01L27/3262 ,  H01L27/3265 ,  H01L28/40 ,  H01L28/60 ,  H01L2227/323

Abstract: Embodiments of the disclosure generally provide methods of forming a capacitor with high capacitance and low leakage as well as a good interface control for thin film transistor (TFT) applications. In one embodiment, a thin film transistor structure includes a capacitor formed in a thin film transistor device. The capacitor further includes a common electrode disposed on a substrate, a dielectric layer formed on the common electrode and a pixel electrode formed on the dielectric layer. An interface protection layer formed between the common electrode and the dielectric layer, or between the dielectric layer and the pixel electrode. A gate insulating layer fabricated by a high-k material may also be utilized in the thin film transistor structure.