Electric lamp and discharge devices: systems – Current and/or voltage regulation
Reexamination Certificate
2009-03-24
2011-11-08
Philogene, Haiss (Department: 2821)
Electric lamp and discharge devices: systems
Current and/or voltage regulation
C315S169100, C315S169300, C345S098000, C345S092000, C345S211000, C345S212000, C324S750300, C324S762010, C324S762020, C257S355000, C257S357000
Reexamination Certificate
active
08054005
ABSTRACT:
A driving circuit, which drives a display panel in a voltage range between a high negative voltage and a high positive voltage, includes: an electric charge discharging circuit; and a test external terminal. The electric charge discharging circuit connects a first terminal supplied with the high negative voltage to a second terminal of a ground voltage in response to a drop of a power source voltage. The test external terminal is connected to the electric charge discharging circuit. The high negative voltage is supplied to the semiconductor substrate. The electric charge discharging circuit interrupts a connection between the first terminal and the second terminal based on a control signal from the test external terminal.
REFERENCES:
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patent: 7072218 (2006-07-01), Fujito et al.
patent: 7187373 (2007-03-01), Tobita
patent: 7227523 (2007-06-01), Ishikawa et al.
patent: 2005-331927 (2005-12-01), None
patent: 2007-94016 (2007-04-01), None
McGinn IP Law Group PLLC
Philogene Haiss
Renesas Electronics Corporation
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