Thin film transistor and method for manufacturing the same array substrate and display device

A method for manufacturing a thin film transistor, comprising:

• forming a plurality of strip-shaped protrusions on a substrate being are arranged to be spaced apart from one another in a first direction, the plurality of strip-shaped protrusions extending in a second direction;
• and
• forming a gate electrode, a gate insulating layer, an active layer and a source-drain electrode sequentially, on the plurality of strip-shaped protrusions,
• wherein the active layer is provided with a plurality of first strip-shaped bulges which are aligned with the plurality of strip-shaped protrusions, and portion of the source-drain electrode which are aligned with the plurality of first strip-shaped bulges are also provided with a plurality of second strip-shaped bulges, the plurality of first strip-shaped bulges being spaced apart from one another in the first direction and extending in the second direction;
• and
• wherein the first direction is perpendicular to the second direction which is in turn perpendicular to a longitudinal direction in which the source-drain electrode extends.

A thin film transistor, comprising:

• a plurality of strip-shaped protrusions formed on a substrate and arranged to be spaced apart from one another in a first direction, the plurality of strip-shaped protrusions extending in a second direction;
• and
• a gate electrode, a gate insulating layer, an active layer and a source-drain electrode on the plurality of strip-shaped protrusions sequentially,
• wherein the active layer is provided with a plurality of first strip-shaped bulges which are aligned with the plurality of strip-shaped protrusions, and portion of the source-drain electrode which are aligned with the plurality of first strip-shaped bulge are also provided with a plurality of second strip-shaped bulges, the plurality of first strip-shaped bulges being spaced apart from one another in the first direction and extending in the second direction;
• and
• wherein the first direction is perpendicular to the second direction which is in turn perpendicular to a longitudinal direction in which the source-drain electrode extends.