Invention Grant
- Patent Title: Electro-luminescence display device and driving method thereof
- Patent Title (中): 电致发光显示装置及其驱动方法
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Application No.: US11046803Application Date: 2005-02-01
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Publication No.: US07663589B2Publication Date: 2010-02-16
- Inventor: Won Kyu Ha , Hak Su Kim , Jae Do Lee , Ki Heon Kim , Jung Min Seo , Hyun Joung Kim
- Applicant: Won Kyu Ha , Hak Su Kim , Jae Do Lee , Ki Heon Kim , Jung Min Seo , Hyun Joung Kim
- Applicant Address: KR Seoul
- Assignee: LG Electronics Inc.
- Current Assignee: LG Electronics Inc.
- Current Assignee Address: KR Seoul
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: KR10-2004-0006879 20040203; KR10-2004-0006880 20040203
- Main IPC: G09G3/36
- IPC: G09G3/36

Abstract:
There is disclosed an electro-luminescence display device that is adaptive for preventing picture quality deterioration by operating a thin film transistor for an electro-luminescence cell drive at a non-saturation area to compensate a threshold voltage, and a driving method thereof.An electro-luminescence display device according to an embodiment of the present invention includes an electro-luminescence cell connected between a first supply voltage source and a ground voltage source to emit light by a current supplied from the first supply voltage source; a cell driver formed every intersection of gate lines and data lines and connected between the first supply voltage source and the electro-luminescence cell to control a current flowing in the pixel cell; and a pulse supplier supplies to the electro-luminescence cell a pulse amplitude modulation signal which is divided to have N (N is a natural number) numbers of different voltage levels from each other, and wherein the driving thin film transistor operates at the non-saturation region.
Public/Granted literature
- US20050168417A1 Electro-Luminescence display device and driving method thereof Public/Granted day:2005-08-04
Information query
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