Invention Grant
- Patent Title: Electro-optical device and electronic device
- Patent Title (中): 电光装置和电子装置
-
Application No.: US14032220Application Date: 2013-09-20
-
Publication No.: US09123854B2Publication Date: 2015-09-01
- Inventor: Shunpei Yamazaki , Jun Koyama , Kunitaka Yamamoto , Toshimitsu Konuma
- Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Applicant Address: JP Kanagawa
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa
- Agency: Nixon Peabody LLP
- Agent Jeffrey L. Costellia
- Priority: JP11-158787 19990604
- Main IPC: H01L31/0376
- IPC: H01L31/0376 ; H01L33/08 ; H01L29/423 ; H01L29/786 ; H01L27/12 ; H01L27/32 ; H01L51/52
Abstract:
An object of the present invention is to provide an EL display device having a high operation performance and reliability.The switching TFT 201 formed 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 TFT 202 has a channel width wider than that of the switching TFT to make a structure appropriate for flowing electric current. Morever, the LDD region 33 of the current control TFT 202 is formed so as to overlap a portion of the gate electrode 35 to make a structure which imposes importance on prevention of hot carrier injection and reduction of OFF current value.
Public/Granted literature
- US20140014963A1 ELECTRO-OPTICAL DEVICE AND ELECTRONIC DEVICE Public/Granted day:2014-01-16
Information query
IPC分类:
