Everdisplay Optronics (shanghai) Limited

Chia-Che Hsu

Chia-chi Huang

Min-ching Hsu

Wei-Ting Chen

The present application provides a thin film transistor, an active matrix organic light emitting diode assembly and a method for manufacturing the same. The thin film transistor includes: a substrate; a buffer layer on the substrate; a semiconductor layer on the buffer layer, including a source region, a drain region and a channel region; a first gate insulating layer covering the semiconductor layer; a second gate insulating layer foot on the first gate insulating layer, a width of the second gate insulating layer foot being smaller than a width of the first gate insulating layer; and a gate electrode on the second gate insulating layer foot; wherein a part of the first gate insulating layer that is on the semiconductor layer has a flat upper surface. The present application may obtain better implantation profiles of source region and drain region, thereby obtaining better uniformity in TFT performance.

Thin film transistor and active matrix organic light emitting diode assembly and method for manufacturing the same

A thin film transistor includes a semiconductor layer including a source region, a drain region, a channel region, first lightly doped drain regions adjacent to the channel region and second lightly doped drain regions adjacent to the first lightly doped drain regions; wherein the second lightly doped drain regions have a doping concentration lower than that of the first lightly doped drain regions. According to the present application, the leakage current in a switching transistor may be further reduced, thereby avoiding instability and even failure in the operation of the assembly caused by overlarge leakage current.

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Shanghai, China

Chia-Che Hsu