US 8,027,011 B2Granted

Liquid crystal display device

AssigneePanasonic Liquid Crystal Display Co., Ltd.

InventorsHiroaki Iwato, Yoshiki Watanabe, Norimichi Shirai, Kazumi Kanesaka

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Abstract

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 spacers 10 are 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 spacers 20 are 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 spacers 20 are shorter than the first spacers 10 due to the leveling effects of the layered blue color filters B (green color filters G) and green color filters G.

Claims11

Dependent claims

A liquid crystal display device, comprising a TFT substrate, a facing substrate and liquid crystal sandwiched between said TFT substrate and said facing substrate, characterized in that

first pixels for displaying a first color by means of first color filters, second pixels for displaying a second color by means of second color filters, and third pixels for displaying a third color by means of third color filters are formed in a matrix on said facing substrate,
first spacers for defining the space between said facing substrate and said TFT substrate, and second spacers shorter than said first spacers are formed on said facing substrate,
said first spacers are formed by layering a number of color filters in such a manner that the area of color filters on the lower side from among said number of color filters is greater than the area of color filters on the upper side, and
said second spacers are formed by layering a number of color filters in such a manner that the area of color filters on the lower side from among said number of color filters is smaller than the area of color filters on the upper side.

1 more element

A liquid crystal display device, comprising a TFT substrate, a facing substrate and liquid crystal sandwiched between said TFT substrate and said facing substrate, characterized in that

first pixels for displaying a first color by means of a first color filter are aligned in the longitudinal direction, second pixels for displaying a second color by means of a second color filter are aligned in the longitudinal direction, and third pixels for displaying a third color by means of a third color filter are aligned in the longitudinal direction on said facing substrate,
said first color filters extend in stripes in the longitudinal direction so as to cover said first pixels, said second color filters extend in stripes in the longitudinal direction so as to cover said second pixels, and said third color filters extend in stripes in the longitudinal direction so as to cover said third pixels,
first spacers are formed between said first pixels by layering a number of color filters, including said first color filters,
second spacers are formed of a number of color filters, including said second color filters, between said second pixels, and
said first spacers are taller than said second spacers.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/334,659Filed 15 Dec 2008
Priority: JP 2007-32608018 Dec 2007
Published: US 2009/0153785 A118 Jun 2009
Granted: 27 Sep 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G02F 1/13394
Gaskets; Spacers; Sealing of cells: spacers regularly patterned on the cell subtrate, e.g. walls, pillars
G02F 1/133514
Filters, e.g. light shielding masks: colour filters
G02F 1/13396
Gaskets; Spacers; Sealing of cells: spacers having different sizes
G02F
Optical devices or arrangements for the control of light by modification of