Electro-optical device and electronic device

Details Electro-optical device and electronic device Electro-optical device and electronic device

2006-04-20

2010-06-22

Won, Bumsuk (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

C313S506000, C313S507000, C257S072000

Reexamination Certificate

active

07741775

ABSTRACT:
An object of the present invention is to provide an EL display device having a high operation performance and reliability.The switching TFT201formed within a pixel has a multi-gate structure, which is a structure which imposes an importance on reduction of OFF current value. Further, the current control TFT202has a channel width wider than that of the switching TFT to make a structure appropriate for flowing electric current. Morever, the LDD region33of the current control TFT202is formed so as to overlap a portion of the gate electrode35to make a structure which imposes importance on prevention of hot carrier injection and reduction of OFF current value.

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