Invention Grant
- Patent Title: Active matrix display device with improved operating performance
- Patent Title (中): 主动矩阵显示装置，具有改进的运行性能
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Application No.: US11074687Application Date: 2005-03-09
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Publication No.: US07701134B2Publication Date: 2010-04-20
- Inventor: Shunpei Yamazaki , Jun Koyama , Kunitaka Yamamoto , Toshimitsu Konuma
- Applicant: Shunpei Yamazaki , Jun Koyama , Kunitaka Yamamoto , Toshimitsu Konuma
- Applicant Address: JP Kanagawa-Ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Kanagawa-Ken
- Agency: Nixon Peabody, LLP
- Agent Jeffrey L. Costellia
- Priority: JP11-158787 19990604
- Main IPC: H05B33/04
- IPC: H05B33/04 ; H05B33/26 ; H01L31/12
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
- US20050161672A1 Electro-optical device and electronic device Public/Granted day:2005-07-28
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