PANEL FOR LIQUID CRYSTAL DISPLAY DEVICE

• US 20100328588A1
• Filed: 06/29/2010
• Published: 12/30/2010
• Est. Priority Date: 06/30/2009
• Status: Active Grant

• Current Assignee: Panasonic Liquid Crystal Display Company Limited (Panasonic Holdings Corporation)
• Original Assignee: IPS Alpha Technology Limited (Milliken & Company)
• Inventors: IWATO, Hiroaki, WATANABE, Yoshiki, KANESAKA, Kazumi, SEGAWA, Shinpei
• Granted Patent: US 8,482,700 B2
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: G02F 1/1333 Constructional arrangements; Manufacturing methodsG02F1/135, G02F1/136 take precedence
• CPC Class Codes: G02F 1/133351 Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
• CPC Class Codes: G02F 1/133514 Colour filters

Abstract

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.

Claims

1. A panel for a liquid crystal display device comprising:

a first mother substrate for cutting out a plurality of color filter substrates, the first mother substrate including a first cell area corresponding to a first cell and a second cell area corresponding to a second cell area;

a first colored layer which is arranged in the first cell area of the first mother substrate;

a second colored layer which is arranged in the second cell area of the first mother substrate;

a second mother substrate for cutting out a plurality of array substrates therefrom; and

liquid crystal which is sandwiched between the first mother substrate and the second mother substrate, wherein the first colored layer and the second colored layer are made of the same material and have portions which have the same thickness, and

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.

2. The panel for a liquid crystal display device according to claim 1, wherein the second cell area is smaller than the first cell area.

3. The panel for a liquid crystal display device according to claim 1, wherein the second colored layer includes a plurality of divided areas correspondingly to a multi-domain method for enlarging an angle of visibility, and

the hole is formed in each of the plurality of divided areas.

4. The panel for a liquid crystal display device according to claim 1, wherein the second colored layer includes a first color material portion, a second color material portion and a third color material portion which differ from each other in color,

the hole is constituted of a first hole formed in the first color material portion, a second hole formed in the second color material portion, and a third hole formed in the third color material portion, and

a ratio at which an opening area of the first hole occupies in the first color material portion, a ratio at which an opening area of the second hole occupies in the second color material portion and a ratio at which an opening area of the third hole occupies in the third color material portion are individually adjusted.

5. The panel for a liquid crystal display device according to claim 1, wherein an achromatic light-transmitting material layer is formed in the inside of the hole formed in the second colored layer.

6. The panel for a liquid crystal display device according to claim 1, wherein the hole formed in the second colored layer is formed of a non-penetrating indentation.

7. The panel for a liquid crystal display device according to claim 1, wherein the panel for a liquid crystal display device further includes an overcoat layer which is brought into contact with an inner surface of the hole.

8. A panel for a liquid crystal display device comprising:

a pair of substrates with a liquid crystal layer sandwiched therebetween; and

a color filter layer which is formed on either one of the pair of substrates, wherein

the color filter layer includes a first color material portion, a second color material portion and a third color material portion which differ in color, the first color material portion having a first hole formed therein, the second color material portion having a second hole formed therein, the third color material portion having a third hole formed therein, and

a ratio at which an opening area of the first hole occupies in the first color material portion, a ratio at which an opening area of the second hole occupies in the second color material portion and a ratio at which an opening area of the third hole occupies in the third color material portion differ from each other.

9. The panel for a liquid crystal display device according to claim 8, wherein an achromatic light-transmitting material layer is formed in the inside of the first hole, the second hole and the third hole.

10. The panel for a liquid crystal display device according to claim 8, wherein the first hole, the second hole and the third hole are formed of a non-penetrating indentation.