Patent ID: 7755597

Claim:
A liquid crystal display device comprising: a light source; a liquid crystal panel; and at least one driving circuit, wherein said light source comprises: three kinds of light emitting elements each emitting light corresponding to a color out of three colors of red, green, and blue; wherein said liquid crystal panel comprises: a plurality of data electrodes formed at predetermined intervals in a first direction to input a sub-pixel data signal to sub-pixels; a plurality of scanning electrodes formed at predetermined intervals in a second direction orthogonal to said first direction to input a scanning signal; a plurality of pixel cells formed in a region of intersections of each of said data electrodes and each of said scanning electrodes, said sub-pixels obtained by dividing each pixel into three regions corresponding to three colors of red, green, and blue; and a semi-transmissive light reflecting plate, wherein light fed from a viewer side or said light source is modulated in a manner to correspond to an image to be displayed by supply of said sub-pixel data signal to pixel cells selected by said scanning signal; wherein three kinds of coloring layers each corresponding to one each of the three colors of red, green; and blue, are formed in part on each of the three sub-pixels; wherein said semi-transmissive light reflecting plate allows colored light having entered from said light source to be transmitted and to output the colored light to the viewer side, to reflect light having entered through said coloring layer from the viewer side, to output the colored light through said coloring layer to the viewer side; wherein said at least one driving circuit is configured to, at an operating time in a transmissive display mode, perform a color display operation according to a successive additive color mixture method by dividing one frame into three fields to drive said liquid crystal panel in every field and by turning ON said light emitting elements including one emitting red light, another emitting green light, and another emitting blue light, sequentially in terms of time, in synchronization with timing of driving said liquid crystal panel, and, at an operating time in a reflective display mode, perform a color display operation according to a juxtapositional additive color mixture method by driving said liquid crystal panel in every frame and by using light passing through said coloring layer corresponding to each of the three colors of red, green, and blue.