Panasonic Liquid Crystal Display Co., Ltd.

Panasonic Corporation

Katuji Tanaka

Daisuke Kajita

Takahiro Kobayashi

Yoshio Umeda

Embodiments of a Liquid Crystal Display (LCD) device are disclosed. The LCD includes a backlight to illuminate a display panel with a plurality of sub-pixels, which include a first sub-pixel having a first color filter, a second sub-pixel having a second color filter having a different color from the first color filter, and a third sub-pixel having a third color filter having a different color from the first color filter and the second color filter. The LCD display panel includes a plurality of drain lines formed between the plurality of sub-pixels, the plurality of drain lines arranged as a first type of drain line set and a second type of drain line set, where the first type of drain line set includes only a single drain line positioned between two adjacent sub-pixels, and the second type of drain line set includes only two drain lines positioned between two adjacent sub-pixels.

Liquid crystal display device

The liquid crystal display panel includes a liquid crystal display unit, and a backlight unit illuminating the liquid crystal display unit. The backlight unit includes first and second white light-emitting diodes that respectively emit white light, and first and second drive units that respectively supply a current to the first and second white light-emitting diodes. The first and second drive units are respectively configured to be able to adjust supply current to the first and second white light-emitting diodes. Chromaticities of the first and second white light-emitting diodes are of a relationship of being positioned opposite each other across a blackbody locus on an xy chromaticity diagram. The first and second white light-emitting diodes change over time so that, on the xy chromaticity diagram, an intersection point of the blackbody locus and a line that passes through the chromaticities of the first and second white light-emitting diodes becomes constant.

Growing community of inventors

Osaka, Japan

Katuji Tanaka