Patent ID: 8674750
Filing Date: 2014-03-18
Classification: G09G,H02M

Abstract:
1. A charge pump, comprising: a charge pumping unit configured to boost a first voltage in response to a clock signal, the first voltage being boosted to a second voltage having a voltage level higher than the first voltage by a middle voltage in response to a first control signal, the middle voltage being pre-set and separately applied in response to the first control signal, the first control signal being enabled during a time period in which the clock signal and a second control signal are disabled, the charge pumping unit configured to boost the second voltage to a third voltage, the third voltage being a voltage level higher than an input voltage by the first voltage, the input voltage being generated in response to the second control signal; and a first transfer unit configured to output the third voltage in response to the second control signal, wherein the charge pumping unit includes,