Invention Grant
- Patent Title: Display device
- Patent Title (中): 显示设备
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Application No.: US13651750Application Date: 2012-10-15
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Publication No.: US09048144B2Publication Date: 2015-06-02
- Inventor: Shunpei Yamazaki , Kengo Akimoto , Atsushi Umezaki
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Robinson Intellectual Property Law Office, P.C.
- Agent Eric J. Robinson
- Priority: JP2008-258992 20081003
- Main IPC: H01L29/786
- IPC: H01L29/786 ; H01L27/12
Abstract:
With an increase in the definition of a display device, the number of pixels is increased, and thus the numbers of gate lines and signal lines are increased. Due to the increase in the numbers of gate lines and signal lines, it is difficult to mount an IC chip having a driver circuit for driving the gate and signal lines by bonding or the like, which causes an increase in manufacturing costs. A pixel portion and a driver circuit for driving the pixel portion are formed over one substrate. At least a part of the driver circuit is formed using an inverted staggered thin film transistor in which an oxide semiconductor is used. The driver circuit as well as the pixel portion is provided over the same substrate, whereby manufacturing costs are reduced.
Public/Granted literature
- US20130069058A1 DISPLAY DEVICE Public/Granted day:2013-03-21
Information query
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