Liquid crystal display device, polarizing plate, and polarizer protection film
First Claim
1. A liquid crystal display device comprising a backlight source, a first polarizer, a liquid crystal cell, and a second polarizer, whereinthe liquid crystal cell has a light-outgoing side and a light-incoming side;
- the first polarizer is disposed on the light-outgoing side of the liquid crystal cell;
the second polarizer is disposed on the light-incoming side of the liquid crystal cell;
the first polarizer comprises (a) a first polarizing film, (b) a protective film laminated on the light-outgoing side of the first polarizing film that is an oriented film having an in-plane retardation of 7,350 to 30,000 nm, a ratio of in-plane retardation to thickness-direction retardation (Re/Rth) of 0.2 or more and 2.0 or less, and a first adhesion-facilitating layer, and (c) a protective film laminated on the light-incoming side of the first polarizing film that is a birefringence-free film;
the second polarizer comprises (a) a second polarizing film, (b) a protective film laminated on the light-incoming side of the second polarizing film that is an oriented film having an in-plane retardation of 7,350 to 30,000 nm, a ratio of in-plane retardation to thickness-direction retardation (Re/Rth) of 0.2 or more and 2.0 or less, and a first adhesion-facilitating layer, and (c) a protective film laminated on the light-outgoing side of the second polarizing film that is a birefringence-free film; and
the first adhesion-facilitating layer in each of the first and second polarizers comprises a resin composition comprising a polyester resin (A) and a polyvinyl alcohol resin (B).
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Accused Products
Abstract
The invention provides a liquid crystal display device, as well as a polarizer and a protective film suitable for the liquid crystal display device. The liquid crystal display device comprises a backlight light source, two polarizers, and a liquid crystal cell disposed between the two polarizers; the backlight light source being a white light-emitting diode light source; each of the two polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; at least one of the protective films being a polyester film having an adhesion-facilitating layer; the polyester film having a retardation of 3,000 to 30,000 nm; and the adhesion-facilitating layer comprising a polyester resin (A) and a polyvinyl alcohol resin (B).
156 Citations
23 Claims
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1. A liquid crystal display device comprising a backlight source, a first polarizer, a liquid crystal cell, and a second polarizer, wherein
the liquid crystal cell has a light-outgoing side and a light-incoming side; -
the first polarizer is disposed on the light-outgoing side of the liquid crystal cell; the second polarizer is disposed on the light-incoming side of the liquid crystal cell; the first polarizer comprises (a) a first polarizing film, (b) a protective film laminated on the light-outgoing side of the first polarizing film that is an oriented film having an in-plane retardation of 7,350 to 30,000 nm, a ratio of in-plane retardation to thickness-direction retardation (Re/Rth) of 0.2 or more and 2.0 or less, and a first adhesion-facilitating layer, and (c) a protective film laminated on the light-incoming side of the first polarizing film that is a birefringence-free film; the second polarizer comprises (a) a second polarizing film, (b) a protective film laminated on the light-incoming side of the second polarizing film that is an oriented film having an in-plane retardation of 7,350 to 30,000 nm, a ratio of in-plane retardation to thickness-direction retardation (Re/Rth) of 0.2 or more and 2.0 or less, and a first adhesion-facilitating layer, and (c) a protective film laminated on the light-outgoing side of the second polarizing film that is a birefringence-free film; and the first adhesion-facilitating layer in each of the first and second polarizers comprises a resin composition comprising a polyester resin (A) and a polyvinyl alcohol resin (B). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A liquid crystal display device comprising a backlight source, a first polarizer, a liquid crystal cell, and a second polarizer, wherein
the liquid crystal cell has a light-outgoing side and a light-incoming side; -
the first polarizer is disposed on the light-outgoing side of the liquid crystal cell; the second polarizer is disposed on the light-incoming side of the liquid crystal cell; the first polarizer comprises (a) a first polarizing film, (b) a protective film laminated on the light-outgoing side of the first polarizing film that is an oriented film having an in-plane retardation of 7,350 to 30,000 nm, a ratio of in-plane retardation to thickness-direction retardation (Re/Rth) of 0.2 or more and 2.0 or less, and a first adhesion-facilitating layer, and (c) a protective film laminated on the light-incoming side of the first polarizing film that is selected from the group consisting of a triacetyl cellulose film, an acrylic film, and a norbornene film; the second polarizer comprises (a) a second polarizing film, (b) a protective film laminated on the light-incoming side of the second polarizing film that is an oriented film having an in-plane retardation of 7,350 to 30,000 nm, a ratio of in-plane retardation to thickness-direction retardation (Re/Rth) of 0.2 or more and 2.0 or less, and a first adhesion-facilitating layer, and (c) a protective film laminated on the light-outgoing side of the second polarizing film that is selected from the group consisting of a triacetyl cellulose film, an acrylic film, and a norbornene film; and the first adhesion-facilitating layer in each of the first and second polarizers comprises a resin composition comprising a polyester resin (A) and a polyvinyl alcohol resin (B). - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification