As described above, the plurality of writing lines exist in one frame, and determination unit 32 determines whether the writing line (for example, writing line 22a2) located at the center in the column direction among three writing lines (for example, writing lines 22a1 to 22a3) arranged side by side has the correlation with each of at least two non-writing lines (for example, pixel row 22 constituting non-writing line groups 22b2 and 22b3 disposed between the writing line and the rest two writing lines (for example, writing lines 22a1 and 22a3) except for the writing line. Determination unit 32 determines whether each of the non-writing lines (for example, pixel rows 22 constituting non-writing line groups 22b2 and 22b3) located up to writing lines 22a1 and 22a3 vertically located in the column direction with respect to writing line 22a2 has the correlation with writing line 22a2.
As illustrated in