Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
LIGHT-EMITTING DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2008033253
Kind Code:
A
Abstract:

To provide an organic light-emitting display device capable of preventing scanning signal delay by making dummy pixels differ in bias conditions, and eliminating short-circuiting phenomena and leakage current of the dummy pixels.

The light-emitting display device comprises a data drive part for generating a data signal and transmitting it to each of a plurality of data lines; a scanning drive part for generating a first selection signal and transmitting it to each of a plurality of first scanning lines; and a display part including a first dummy pixel group, that includes the plurality of data lines and the plurality of first scanning lines and is made up of a plurality of first pixels defined by the data lines and the first scanning lines, and a plurality of dummy pixels adjacent to the scanning drive part, and a second dummy pixel group made up of a plurality of dummy pixels adjacent to the data driving part. The voltage of a first power source instead of the data signal and the first selection signal is applied to the pixel circuit of the first dummy pixel group, and the voltage of the first power source, inplace of the first selection signal is applied to each of the pixel circuits of the second dummy pixel group. As a result, the load of the scanning line generated by the dummy pixel can be eliminated, and the selection signal can be transmitted to the pixel without delays, and the dummy pixel is prevented from emitting light by the leakage current.


Inventors:
SHIN HYE-JIN
KWAK WON-KYU
Application Number:
JP2007116012A
Publication Date:
February 14, 2008
Filing Date:
April 25, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SAMSUNG SDI CO LTD
International Classes:
G09F9/30; G09G3/30; G09G3/20; H01L27/32; H01L51/50
Domestic Patent References:
JP2006065284A2006-03-09
JPH0736406A1995-02-07
JPH0990411A1997-04-04
JP2006065282A2006-03-09
JP2005141256A2005-06-02
JP2007052422A2007-03-01
JP2007140451A2007-06-07
JP2006065284A2006-03-09
JPH0736406A1995-02-07
JPH0990411A1997-04-04
JP2006065282A2006-03-09
JP2005141256A2005-06-02
JP2007052422A2007-03-01
JP2007140451A2007-06-07
Foreign References:
WO2004023191A22004-03-18
WO2004023191A22004-03-18
Attorney, Agent or Firm:
Takashi Watanabe
Masatake Shiga
Yasuhiko Murayama



 
Previous Patent: ROLLER FOR LIQUID DEVELOPMENT ELECTROPHOTOGRAPHIC DEVICE

Next Patent: TONER AND MANUFACTURING METHOD THEREFOR