Invention Application
- Patent Title: EL DISPLAY DEVICE, DRIVING METHOD THEREOF, AND ELECTRONIC EQUIPMENT PROVIDED WITH THE EL DISPLAY DEVICE
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Application No.: US13776772Application Date: 2013-02-26
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Publication No.: US20130175536A1Publication Date: 2013-07-11
- Inventor: Yukio YAMAUCHI , Takeshi FUKUNAGA
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Atsugi-shi
- Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Current Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
- Current Assignee Address: JP Atsugi-shi
- Priority: JP11-174734 19990621
- Main IPC: H01L29/786
- IPC: H01L29/786

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
- US08558773B2 EL display device, driving method thereof, and electronic equipment provided with the EL display device Public/Granted day:2013-10-15
Information query
IPC分类: