Patent ID: 8749937

Claim:
A display device comprising: a display panel having a drive circuit; and a power source circuit which supplies a drive voltage to the drive circuit, the power source circuit comprising: a drive voltage signal generation circuit which generates a drive voltage signal; an output transistor which has a control electrode to which the drive voltage signal generated by the drive voltage signal generation circuit is inputted, the output transistor outputting the drive voltage from a first electrode; a first transistor which is turned on when an overcurrent flows into the output transistor; and a second transistor which is turned on and turns off the output transistor when the first transistor is turned on, wherein assuming a period during which the overcurrent continuously flows into the output transistor as an overcurrent operation period and a period during which the output transistor is normally operated as a normal operation period, the first transistor and the second transistor are repeatedly turned on and off so as to make the output transistor intermittently operate within the overcurrent operation period, and the first transistor and the second transistor are turned off and the output transistor automatically returns to a normal operation when an operation period is shifted from the overcurrent operation period to the normal operation period which is the period during which the output transistor is normally operated.