A reflectable metal film having a light transmission hole 5 is formed on an inner surface of a transparent substrate 2, and a light transmission region 7 and a light reflection region 8 are arranged within each of pixel regions on the inner surface of the transparent substrate 2. A first color filter 9 and a second color filter 10 of a similar color that differs in tone are formed in each of the pixel regions. A boundary 11 between the first color filter 9 and the second color filter 10 in each of the pixel regions is positioned in the light reflection region 8 in the pixel region.