Provided is a backlit liquid crystal display apparatus having one pixel unit comprising RGB three primary color regions and a white region or a region having low color concentration, so that high brightness can be compatible with color purity. A pixel unit comprises RGB main pixels and G/R sub-pixels. In a lower gray scale, color purity has priority in display with main pixels, while in a higher gray scale, color purity has priority in display with main and sub-pixels, whereby high brightness can be compatible with color purity. Sub-pixels may be consisted only by green sub-pixels.