Title:
EL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2009193037
Kind Code:
A
Abstract:
To provide an EL display device capable of measuring or monitoring current flowing through a power supply line without physically changing or operating mechanism etc. of the power supply line.
In the EL display device, a switch SW1 being turned off using an output open function of a power supply circuit 12, a cathode voltage Vss is not transmitted, an output terminal takes on a high impedance condition and, a probing being done into a pad P1 of the cathode voltage Vss output terminal with a probe 304, an ammeter 303 which measures a current Ia is disposed between the probe 304 and an external power supply 471, making an adjustment time cathode voltage Vsst equal to an image display time cathode voltage Vss.
Inventors:
TAKAHARA HIROSHI
Application Number:
JP2008049400A
Publication Date:
August 27, 2009
Filing Date:
February 29, 2008
Export Citation:
Assignee:
TOSHIBA MOBILE DISPLAY CO LTD
International Classes:
G09G3/30; G09F9/00; G09F9/30; G09G3/20; H01L27/32; H01L51/50; H05B33/14
Domestic Patent References:
| JP2005181951A | 2005-07-07 | |||
| JP2007018876A | 2007-01-25 |
Attorney, Agent or Firm:
Tamako Tsutada
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita
Husband
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita
Husband
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