Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Reexamination Certificate
2011-08-02
2011-08-02
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
C345S156000, C345S061000, C345S062000, C345S063000
Reexamination Certificate
active
07990340
ABSTRACT:
The present invention relates to a plasma display apparatus including a sustain driving apparatus that supplies a sustain signal to a panel. The plasma display apparatus includes a panel in which a front substrate having formed first and second electrodes therein and a rear substrate are coalesced, a sustain driver including a first switch for applying a first voltage to any one of the first and second electrodes and a second switch for applying a second voltage, and a circuit protection unit that controls one of the first and second switches, which has a voltage higher than a predetermined voltage, at its both ends, not to turn on. According to the present invention, when a voltage at both ends of the switch included in the sustain driving apparatus in order to supply the sustain signal is higher than a reference voltage, the switch is controlled not to turn on. It is therefore possible to prevent damage due to the short of the sustain driving apparatus and, therefore, to improve the lifespan and reliability of a product.
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patent: 2005/0146456 (2005-07-01), Kondo
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European Search Report dated Apr. 25, 2008.
Korean Office Action dated May 31, 2007.
An Yang Ki
Cho Kyu Choon
Jung Yun Kwon
Kwon Chang Young
Lim Jong Sik
Hjerpe Richard
KED & Associates LLP
LG Electronics Inc.
Shapiro Leonid
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