Display apparatus and method of manufacturing display apparatus

A display apparatus comprising:

• a pixel having a first thin film transistor, and
• a drive circuit having a second thin film transistor and driving the pixel,
• wherein each of the first thin film transistor and the second thin film transistor comprises a gate electrode, a gate insulating film covering the gate electrode, a first amorphous silicon layer formed on the gate insulating film and including a polysilicon region and an amorphous silicon region, a second amorphous silicon layer covering the first amorphous silicon layer, and a source electrode and a drain electrode formed apart from each other above the second amorphous silicon layer;
• wherein the first thin film transistor has a first channel region including a first part of the first amorphous silicon layer, the first part being a part between the source electrode and the drain electrode of the first thin film transistor in a top view;
• wherein the second thin film transistor has a second channel region including a second part of the first amorphous silicon layer, the second part being a part between the source electrode and the drain electrode of the second thin film transistor in a top view;
• wherein the first channel region includes the amorphous silicon region and the polysilicon region in the first part;
• wherein the second channel region includes the polysilicon region in the second part, the second channel region does not include the amorphous silicon region in the second part;
• and
• wherein electrical characteristic of the first channel region is different from electrical characteristic of the second channel region.