Panasonic Liquid Crystal Display Co., Ltd.

Hitachi, Ltd.

Hitachi Displays, Ltd.

Hitachi Device Engineering Co., Ltd.

Kazumi Kanesaka

Hiroaki Iwato

Yoshiki Watanabe

Norimichi Shirai

Kikuo Ono

Hisashi Yoshida

Tomoaki Tsuboka

Masato Sakurai

Shinpei Segawa

A liquid crystal display device includes a TFT substrate, a facing substrate and liquid crystal sandwiched therebetween. First pixels for displaying a first color according to a first color filter, second pixels for displaying a second color according a second color filter and third pixels for displaying a third color according to a third color filter are aligned in a longitudinal direction on the facing substrate, respectively. The first color filters, the second color filters, and the third color filters extend in stripes in the longitudinal direction so as to cover the first, second and third pixels, respectively. First spacers are formed between the first pixels by layering a number of color filters, including the first color filters, and second spacers are formed of a number of color filters, including the second color filters, between the second pixels. The first color filters which are formed between the second pixels are circular in plan view.

Liquid crystal display device

A panel for a liquid crystal display device includes: a first mother substrate for cutting out color filter substrates including a first cell area corresponding to a first cell and a second cell area corresponding to a second cell therefrom; a first colored layer arranged in the first cell area of the first mother substrate; a second colored layer arranged in the second cell area of the first mother substrate; a second mother substrate for cutting out array substrates therefrom; and liquid crystal sandwiched between the first mother substrate and the second mother substrate. The first colored layer and the second colored layer are made of the same material and have portions which have the same thickness. A hole is formed in the second colored layer so as to make color reproducibility of the second colored layer lower than color reproducibility of the first colored layer.

Panel for liquid crystal display device

A backlight source has a spectral distribution such that luminances of red and green light are stronger than luminance of blue light. A color filter includes a blue coloring layer that can best transmit a blue light, a red coloring layer that can best transmit a red light, a green coloring layer that can best transmit a green light, and a porous layer in which penetration holes are formed so as to penetrate therethrough in its thickness direction. The blue coloring layer is formed so as to be thicker than the red and green coloring layers. A liquid crystal layer is formed so as to be thinner in a portion facing the blue coloring layer than a portion facing the red and green coloring layers. The porous layer is formed from the same material and to have the same thickness as the blue coloring layer.

An object of the present invention is to form spacers for defining the space between the TFT substrate and the facing substrate of color filters, and by doing so, finely control the height of the spacers. First spacersare formed of green color filters G in pillar form on top of red color filters R and blue color filters B (green color filters G) having a large area between blue pixels BP; second spacersare formed by layering blue color filters B (green color filters G) and green color filters G having a large area on top of red color filters R in pillar form between green pixels GP; and the second spacersare shorter than the first spacersdue to the leveling effects of the layered blue color filters B (green color filters G) and green color filters G.

The present invention provides a reflective-type liquid crystal display device with a reflection electrode thereof formed on a resin binder layer wherein a number of fine particles are mingled in the resin binder layer and protrude their upper portions from the resin binder layer to make an upper surface of the resin binder layer rough, and improves reflection property thereof while simplifying a structure and manufacturing process therefor.

Growing community of inventors

Chounan, Japan

Kazumi Kanesaka