A display device comprising: a display unit including a first plurality of light emitting elements (L11-L14) of a first color, a second plurality of light emitting elements (L21-L24) of a second color and a third plurality of light emitting elements (L31-L34) of a third color, the first, second and third colors being different from each other; a memory for storing, for each of the first, second and third plurality of light emitting elements, a relationship between gradation values of a main frame and gradation values of a plurality of sub-frames of equal length of time that constitute said main frame, wherein the gradation value of said main frame is equal to the sum of the gradation values of its sub-frames; and a control unit configured to control, by pulse width modulation per sub-frame, each of the first, the second and the third plurality of light emitting elements according to input gradation data of said main frame and the corresponding relationship stored in the memory, wherein the control unit is configured to turn on predetermined one amongst the first, the second and the third plurality of light emitting elements such that for main frames having a total gradation value being equal to or greater than 2 and equal to or less than a predetermined value, a minimum gradation value of a sub-frame is zero, and a difference between the gradation value of a sub-frame having a maximum gradation value and the gradation value of a sub-frame having a minimum gradation value is at least 2, and for main frames having a total gradation value exceeding the predetermined value, a minimum gradation value of a sub-frame is greater than zero, and a difference between the gradation value of a sub-frame having a maximum gradation value and the gradation value of a sub-frame having a minimum gradation value is 1 or less, and to turn on the others amongst the first, second and the third plurality of light emitting elements such that a difference between the gradation value of a sub-frame having a maximum gradation value and the gradation value of a sub-frame having a minimum gradation value is 1 at most, regardless of the gradation value of the main frame, and wherein the predetermined one amongst the first, the second and the third plurality of light emitting elements has a longer output rise time and a longer output fall time compared to the others amongst the first, the second and the third plurality of light emitting elements. a display unit including a first plurality of light emitting elements (L11-L14) of a first color, a second plurality of light emitting elements (L21-L24) of a second color and a third plurality of light emitting elements (L31-L34) of a third color, the first, second and third colors being different from each other; a memory for storing, for each of the first, second and third plurality of light emitting elements, a relationship between gradation values of a main frame and gradation values of a plurality of sub-frames of equal length of time that constitute said main frame, wherein the gradation value of said main frame is equal to the sum of the gradation values of its sub-frames; and a control unit configured to control, by pulse width modulation per sub-frame, each of the first, the second and the third plurality of light emitting elements according to input gradation data of said main frame and the corresponding relationship stored in the memory, wherein the control unit is configured to turn on predetermined one amongst the first, the second and the third plurality of light emitting elements such that for main frames having a total gradation value being equal to or greater than 2 and equal to or less than a predetermined value, a minimum gradation value of a sub-frame is zero, and a difference between the gradation value of a sub-frame having a maximum gradation value and the gradation value of a sub-frame having a minimum gradation value is at least 2, and for main frames having a total gradation value exceeding the predetermined value, a minimum gradation value of a sub-frame is greater than zero, and a difference between the gradation value of a sub-frame having a maximum gradation value and the gradation value of a sub-frame having a minimum gradation value is 1 or less, and to turn on the others amongst the first, second and the third plurality of light emitting elements such that a difference between the gradation value of a sub-frame having a maximum gradation value and the gradation value of a sub-frame having a minimum gradation value is 1 at most, regardless of the gradation value of the main frame, and wherein the predetermined one amongst the first, the second and the third plurality of light emitting elements has a longer output rise time and a longer output fall time compared to the others amongst the first, the second and the third plurality of light emitting elements.