Invention Grant
- Patent Title: Organic electroluminescence display apparatus, driving circuit for driving organic electroluminescence light emitting portion, and driving method for organic electroluminescence light emitting portion
- Patent Title (中): 有机电致发光显示装置,驱动有机电致发光发光部的驱动电路及有机电致发光发光部的驱动方法
-
Application No.: US12219991Application Date: 2008-07-31
-
Publication No.: US08085258B2Publication Date: 2011-12-27
- Inventor: Mitsuru Asano , Masatsugu Tomida , Hiroshi Fujimura
- Applicant: Mitsuru Asano , Masatsugu Tomida , Hiroshi Fujimura
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Rader Fishman & Grauer PLLC
- Priority: JP2007-210741 20070813
- Main IPC: G09G5/00
- IPC: G09G5/00

Abstract:
A driving circuit for driving an organic electroluminescence light emitting portion includes: a driving transistor of the n channel type having source/drain regions, a channel formation region and a gate electrode; an image signal writing transistor having source/drain regions, a channel formation region and a gate electrode; and a capacitor element. A first voltage for supplying current toward the organic electroluminescence light emitting portion through the driving transistor and a second voltage for preventing a potential difference between the second node and a cathode electrode provided on the organic electroluminescence light emitting portion from exceeding a threshold voltage of the organic electroluminescence light emitting portion are selectively applied from the power supply section to the first one of the source/drain regions of the driving transistor. An LDD (Lightly Doped Drain) structure is formed adjacent the first one of the source/drain regions of the driving transistor.
Public/Granted literature
Information query