Invention Grant
- Patent Title: Self-emission type display device
- Patent Title (中): 自发式显示装置
-
Application No.: US11516732Application Date: 2006-09-07
-
Publication No.: US07948452B2Publication Date: 2011-05-24
- Inventor: Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai , Tomonori Matsumuro
- Applicant: Masatoshi Sato , Hitoshi Yasuda , Kazumasa Takai , Tomonori Matsumuro
- Applicant Address: JP Osaka
- Assignee: Sanyo Electric Co., Ltd.
- Current Assignee: Sanyo Electric Co., Ltd.
- Current Assignee Address: JP Osaka
- Agency: Morrison & Foerster LLP
- Priority: JP2005-263298 20050912
- Main IPC: G09G3/30
- IPC: G09G3/30

Abstract:
The invention provides an organic EL display device usable for both negative and positive polarity video signals. The organic EL display device of the invention has a polarity switching circuit switching a polarity of a digital video signal. In a case where a display panel is made for a negative polarity video signal, when a negative digital video signal is inputted, this polarity switching circuit lets the negative polarity digital video signal pass therethrough without inverting its polarity. When a positive polarity digital video signal is inputted, this polarity switching circuit inverts a polarity of the positive polarity digital video signal and inverts and switches reference data for a white level and reference data for a black level in order to obtain an accurate inverted image. An output of the polarity switching circuit is converted into an analog video signal through a first D/A converter and outputted to the display panel.
Public/Granted literature
- US20070057878A1 Self-emission type display device Public/Granted day:2007-03-15
Information query
IPC分类: