A pixel circuit (1; 2; 3) comprising: a display element (306; 400; 600) whose luminance is controlled by a supplied current; at least one first switching element section (304; 401a; 601a) configured to output a current in a field-effect-transistor saturation characteristic region in response to an input variable serving as a grayscale signal; and at least one second switching element section (305; 401b; 601b) configured to output a current in a field-effect-transistor linear characteristic region in response to an input variable serving as a grayscale signal, wherein (i) a first current supply line, configured to output a current determined by the at least one first switching element section (304; 401a; 601a), (ii) a second current supply line, configured to output a current determined by the at least one second switching element section (305; 401b; 601b), are mutually connected and then further connected to a current supply line of the display element (306; 400; 600); wherein, on a low grayscale region side, the current output from the at least one first switching element section (304; 401a; 601a) is predominant among the currents supplied to the display element, and, on a high grayscale region side in accordance with change in luminance, the current supplied to the display element is changed due to the current output from the at least one second switching element section (305; 401b; 601b). a display element (306; 400; 600) whose luminance is controlled by a supplied current; at least one first switching element section (304; 401a; 601a) configured to output a current in a field-effect-transistor saturation characteristic region in response to an input variable serving as a grayscale signal; and at least one second switching element section (305; 401b; 601b) configured to output a current in a field-effect-transistor linear characteristic region in response to an input variable serving as a grayscale signal, wherein (i) a first current supply line, configured to output a current determined by the at least one first switching element section (304; 401a; 601a), (ii) a second current supply line, configured to output a current determined by the at least one second switching element section (305; 401b; 601b), are mutually connected and then further connected to a current supply line of the display element (306; 400; 600); wherein, on a low grayscale region side, the current output from the at least one first switching element section (304; 401a; 601a) is predominant among the currents supplied to the display element, and, on a high grayscale region side in accordance with change in luminance, the current supplied to the display element is changed due to the current output from the at least one second switching element section (305; 401b; 601b). (i) a first current supply line, configured to output a current determined by the at least one first switching element section (304; 401a; 601a), (ii) a second current supply line, configured to output a current determined by the at least one second switching element section (305; 401b; 601b), are mutually connected and then further connected to a current supply line of the display element (306; 400; 600); wherein, on a low grayscale region side, the current output from the at least one first switching element section (304; 401a; 601a) is predominant among the currents supplied to the display element, and, on a high grayscale region side in accordance with change in luminance, the current supplied to the display element is changed due to the current output from the at least one second switching element section (305; 401b; 601b).