| 摘要 |
An objective of the present invention is, when interlace displaying two types of videos, to make uniform the occurrences of an afterimage from a black frame insertion into each video. A liquid-crystal display device comprises: a left-right video interlace output unit (15) which interlace outputs two types of video frames; a mask pattern storage unit (18) which, within a reference region which is a pixel region wherein m pixels are arrayed in a matrix (where m is an even number greater than three) corresponding to a pixel region of a liquid-crystal panel, further comprises m mask patterns of an even number of mask pixels greater than one and less than m which are arrayed in different arrays; a mask pattern selection counter (17) which selects mask patterns in sequence; and a mask compositing unit (16) which composites the selected mask pattern into the video frame which is outputted from the interlace output unit. The mask patterns are such that the number of iterations whereby the mask pixels are positioned on a pixel unit basis in the reference region across the m mask patterns is equivalent. |
