Title:
DISPLAY DEVICE-USE LIGHTING SYSTEM AND DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2007/018071
Kind Code:
A1
Abstract:
A display device-use lighting system capable of preventing the shorter-life of
a discharge tube when the discharge tube is lighted by alternately applying inverse-phase
high voltages to the opposite-end electrodes of two discharge tubes connected
in series. The lighting system comprises a power supply unit (22) for applying
inverse-phase high voltages Va, Vb to the high-voltage sides (7a, 8a) of respective
two discharge tubes (7, 8) connected at their low-voltage sides (7b, 8b), and
a feedback control unit (23) for regulating voltages Va, Vb applied to the high-voltage
sides (7a, 8a) of the discharge tubes (7, 8) from the power supply unit (22) according
to a voltage Vc produced at a connection portion (9) where the low-voltage sides
(7b, 8b) of the two discharge tubes (7, 8) are connected.
Inventors:
MURAO MASAYUKI
Application Number:
PCT/JP2006/315185
Publication Date:
February 15, 2007
Filing Date:
August 01, 2006
Export Citation:
Assignee:
SHARP KK (JP)
MURAO MASAYUKI
MURAO MASAYUKI
International Classes:
H05B41/24; G02F1/13357
Foreign References:
| JP2001085759A | 2001-03-30 | |||
| JP2004054294A | 2004-02-19 | |||
| JP2003230272A | 2003-08-15 | |||
| JPH10340788A | 1998-12-22 | |||
| JP2005507145A | 2005-03-10 | |||
| JP2002278471A | 2002-09-27 |
Attorney, Agent or Firm:
UENO, Noboru (21-23 Sakae 3-chome, Naka-ku, Nagoya-sh, Aichi 08, JP)
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