| 摘要 |
<p>A four-color liquid crystal display device has pixels containing first to fourth subpixels (hereinafter abbreviated as "SPs" as needed) having four different colors, respectively, arranged in a two-by-two matrix, the first to fourth SPs being placed in the first row and the first column, in the first row and the second column, in the second row and the second column, and in the second row and the first column, respectively. In displaying a font (i) subjected to subpixel rendering premised on a pixel composed of three SPs having three different colors, respectively, arranged in three columns of stripe, and (ii) specified, regarding a predetermined pixel falling on part of a character edge, that the SP in the first column takes on a tone Tx, that the SP in the second column takes on a tone Ty, and that the SP in the third column takes on a tone Tz, the liquid crystal display device specifies, for the predetermined pixel, that each of the first and fourth SPs takes on a tone which is obtained by performing rounding on (Tx × 2/3) + (Ty × 1/3) = p and that each of the second and third SPs takes on a tone which is obtained by performing rounding on (Ty × 1/3) + (Tz × 2/3) = v. This allows the four-color liquid crystal display device to appropriately display a subpixel rendered font (e.g., Clear Type (registered trademark)).</p> |
