Invention Grant
- Patent Title: Electronic device and electronic apparatus
- Patent Title (中): 电子设备和电子设备
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Application No.: US11860262Application Date: 2007-09-24
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Publication No.: US07843407B2Publication Date: 2010-11-30
- Inventor: Yukio Yamauchi , Takeshi Fukunaga
- Applicant: Yukio Yamauchi , Takeshi Fukunaga
- 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: JP11-119466 19990427
- Main IPC: G09G3/30
- IPC: G09G3/30
Abstract:
An EL display having high operating performance and reliability is provided. LDD regions 15a through 15d of a switching TFT 201 formed in a pixel are formed such that they do not overlap gate electrodes 19a and 19b to provide a structure which is primarily intended for the reduction of an off-current. An LDD region 22 of a current control TFT 202 is formed such that it partially overlaps a gate electrode 35 to provide a structure which is primarily intended for the prevention of hot carrier injection and the reduction of an off-current. Appropriate TFT structures are thus provided depending on required functions to improve operational performance and reliability.
Public/Granted literature
- US20080018566A1 ELECTRONIC DEVICE AND ELECTRONIC APPARATUS Public/Granted day:2008-01-24
Information query
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