Reset device and method for a scan driver
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United States of America Patent
Stats
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Oct 13, 2009
Grant Date -
Jan 5, 2006
app pub date -
Jul 5, 2005
filing date -
Jul 5, 2004
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The invention relates to a reset device for a scan driver. The scan driver is used for driving a control circuit of a display. The reset device comprises: a first input terminal, a second input terminal and a reset circuit. The first input terminal receives a first input voltage. After the first input voltage inputs to the first input terminal, the second input terminal receives a second input voltage. The second input voltage has a temporary section and a stable section. At the stable section, the second input voltage is larger than the first input voltage. When the first input terminal receives the first input voltage, the reset circuit outputs a reset signal to the scan driver. When the second input voltage is larger than a threshold value at the temporary section, the reset circuit clears the reset signal. According to the reset device of the invention, the scan driver maintains at a reset state so as to prevent that outputs of the scan driver to be at high level at the same time of supplying power. Therefore, the reset device can lower the malfunction of the control circuit and decrease the probability of damage and breakdown to maintain normal operation and life of the control circuit can be maintained.
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