Control device of lock-up clutch

A control device of a lock-up clutch mounted on a vehicle including an engine, a transmission, a fluid-type power transmitting device interposed between the engine and the transmission, and the lock-up clutch provided on the fluid-type power transmitting device, the control device comprising:

• a controller configured to increase a torque capacity of the lock-up clutch when an accelerator opening of the vehicle changes in an accelerating direction, and configured to make the torque capacity larger, when a state of the fluid-type power transmitting device is maintained in a driven state before and after the accelerator opening of the vehicle changes in the accelerating direction than when the state of the fluid-type power transmitting device is maintained in a driving state before and after the accelerator opening of the vehicle changes in the accelerating direction.