Patent ID: 8139009
Filing Date: 2012-03-20
Classification: G02F,G09G

Abstract:
1. A transflective liquid crystal display panel, comprising: a ferroelectric liquid crystal cell operating in a half V-switching mode to realize a high-speed response and a wide viewing angle, the ferroelectric liquid crystal cell having a pixel region including a reflective portion and a transmissive portion, wherein a voltage applied to the ferroelectric liquid crystal cell depends on a brightness level of ambient light, wherein the ferroelectric liquid crystal cell includes: an upper substrate having a common electrode; a lower substrate; a first passivation film formed on the lower substrate and having a plane upper surface; a reflective plate formed on the first passivation film corresponding to the reflective portion; a second passivation film formed on the first passivation film and the reflective plate; and a pixel electrode formed on the second passivation film corresponding to the reflective portion and the transmissive portion, the pixel electrode being integrally formed within the pixel region; an alignment film formed on the pixel electrode; and a ferroelectric liquid crystal material operating in the half V-switching mode injected between the upper substrate and the lower substrate, wherein a first pixel voltage is supplied to the pixel electrode of the reflective portion and the transmissive portion in a reflective mode, and a second pixel voltage is supplied to the pixel electrode of the reflective portion and the transmissive portion in a transmissive mode, wherein the second pixel voltage is higher than the first pixel voltage, wherein a direction of the ferroelectric liquid crystal material in the reflective mode is rotated by an angle θ by applying the first pixel voltage, wherein a direction of the ferroelectric liquid crystal material in the transmissive mode is rotated by an angle nθ by applying the second pixel voltage, wherein n is integer larger than 1, wherein the pixel electrode of the reflective portion and the transmissive portion is formed between the second passivation film and the alignment film, and wherein the second pixel voltage is produced from the first pixel voltage.