Patent ID: 8674979
Filing Date: 2014-03-18
Classification: G09G,H01L

Abstract:
1. A circuit comprising: an operation circuit comprising a first transistor and a second transistor; a current detection circuit operationally connected to the operation circuit, the current detection circuit configured to detect a current value of current flowing in at least one of the first transistor and the second transistor; a judgment circuit operationally connected to the current detection circuit, the judgment circuit configured to compare the current value with a reference value; a memory circuit operationally connected to the judgment circuit; and a voltage output circuit operationally connected to the judgment circuit through the memory circuit, wherein each of the first transistor and the second transistor comprises: wherein a first signal configured to control switching of at least the one of the first transistor and the second transistor is inputted to the first gate of at least the one of the first transistor and the second transistor, wherein a second signal configured to control a threshold voltage of the first transistor and a threshold voltage of the second transistor is inputted to the second gate of the first transistor and the second gate of the second transistor, wherein the memory circuit is configured to store a third signal when the current value is larger than the reference value, wherein the voltage output circuit is configured to output the third signal to the second gate of the first transistor and the second gate of the second transistor, wherein a voltage of the third signal is smaller than a voltage of the second signal by a constant value, and wherein the first transistor and the second transistor have a same conductivity type.