Invention Grant
- Patent Title: EL display device, driving method thereof, and electronic equipment provided with the EL display device
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Application No.: US12892277Application Date: 2010-09-28
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Publication No.: US08405594B2Publication Date: 2013-03-26
- Inventor: Yukio Yamauchi , Takeshi Fukunaga
- Applicant: Yukio Yamauchi , Takeshi Fukunaga
- 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: JP11-174734 19990621
- Main IPC: G09G3/36
- IPC: G09G3/36

Abstract:
An EL display device capable of performing clear multi-gradation color display and electronic equipment provided with the EL display device are provided, wherein gradation display is performed according to a time-division driving method in which the luminescence and non-luminescence of an EL element (109) disposed in a pixel (104) are controlled by time, and the influence by the characteristic variability of a current controlling TFT (108) is prevented. When this method is used, a data signal side driving circuit (102) and a gate signal side driving circuit (103) are formed with TFTs that use a silicon film having a peculiar crystal structure and exhibit an extremely high operation speed.
Public/Granted literature
- US20110012818A1 EL DISPLAY DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC EQUIPMENT PROVIDED WITH THE EL DISPLAY DEVICE Public/Granted day:2011-01-20
Information query
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