Title:
EL ELEMENT, AND ILLUMINATION UNIT USING THE SAME
Document Type and Number:
Japanese Patent JP2003217866
Kind Code:
A
Abstract:
To reduce lowering of brightness, and to prolong an illumination time, in an EL element used for illumination of various kinds of electronic devices, and an illumination unit using the element.
Light transmissive electrode layers 22A, 22B, and back plate layers 25A, 25B are formed with a plurality of substantially U-shaped layers adjacent each other with a prescribed space to constitute the EL element 20, and the illumination unit is constituted to make voltage application onto the plurality of layers in the EL element 20 switched alternately at a prescribed time interval by a control means, so as to reduce the lowering of the brightness, and to allow the long illumination time.
Inventors:
MATSUOKA KUNIHARU
ISHIKAWA TAKAYUKI
DOSONO SHIGETAKA
ABE YOSHIHARU
ISHIKAWA TAKAYUKI
DOSONO SHIGETAKA
ABE YOSHIHARU
Application Number:
JP2002011360A
Publication Date:
July 31, 2003
Filing Date:
January 21, 2002
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H05B33/26; H01H13/02; H01H13/70; H01H13/712; H05B33/12; (IPC1-7): H05B33/26; H01H13/02; H01H13/70; H05B33/12
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)