A transreflective LCD panel and an electronic device using the same are provided. The LCD panel includes a first substrate and a second substrate. The second substrate is parallel to the first substrate. A liquid crystal layer is sealed between the two substrates. The first substrate includes several reflective portions. The second substrate includes a color filter structure. The color filter structure includes several color filter layers in at least four colors. Each of the color filter layers has an opening corresponding to one reflective portion. An optical filter is disposed in the opening for enhancing the coloration of the LCD panel.