Display apparatus and electronic device

A display apparatus comprising:

• a plurality of light emitting devices including a light emitting unit and a drive circuit for driving the light emitting unit,
• wherein the drive circuit includes
• a first transistor configured to control the light emitting unit,
• a second transistor configured to control writing of a video signal, and
• a capacitative element,
• wherein a control terminal of the first transistor is connected to a first electrode of the capacitative element, a first terminal of the first transistor is connected to an anode electrode of the light emitting unit, and the first terminal of the first transistor is connected to a second electrode of the capacitative element,
• wherein a first terminal of the second transistor is connected to the control terminal of the first transistor, and the first terminal of the second transistor is connected to the first electrode of the capacitative element,
• wherein an first insulating film is disposed over the first transistor and the second transistor,
• wherein the capacitive element is overlapped with the first transistor in a cross sectional view,
• wherein the second electrode of the capacitive element is disposed on the first electrode of the capacitative element in the cross sectional view, and
• wherein a gate length of the first transistor is longer than a gate length of the second transistor.

A display apparatus comprising:

• a plurality of light emitting devices including a light emitting unit and a drive circuit for driving the light emitting unit,
• wherein the drive circuit includes
• a first transistor configured to control the light emitting unit,
• a second transistor configured to control writing of a video signal, and
• a capacitative element,
• wherein a control terminal of the first transistor is connected to a first electrode of the capacitative element, a first terminal of the first transistor is connected to an anode electrode of the light emitting unit, and the first terminal of the first transistor is connected to a second electrode of the capacitative element,
• wherein a first terminal of the second transistor is connected to the control terminal of the first transistor, and the first terminal of the second transistor is connected to the first electrode of the capacitative element,
• wherein a first insulating film is disposed over the first transistor and the second transistor, wherein the capacitive element is overlapped with the first transistor in a cross sectional view, wherein the second electrode of the capacitive element is disposed on the first electrode of the capacitative element in the cross sectional view, and
• wherein a channel length of the first transistor is longer than a channel length of the second transistor.