Samsung Sdi Co., Inc.

Young Hyun Ju

Young Oh

Jeong Ho Lee

Dong Ho Wee

Yong Un Jung

Seong Hoon Lee

Jang Hyun Cho

Dae Seob Shim

Jin Woo Kim

Young Min Kim

Sang Cheon Park

Dae Gyu Lee

So Yeon Gong

Da Neung Park

A polarizing plate and a liquid crystal display including the same are provided. A polarizing plate includes a polarizing film and a contrast-improving optical film sequentially stacked in the stated order. The contrast-improving optical film includes a contrast-improving layer including a first resin layer and a second resin layer facing the first resin layer. The second resin layer includes a patterned portion having optical patterns and a flat section between the optical patterns. The second resin layer satisfies Equation 1, and the polarizing plate has a contrast ratio gain of about 1.00 or more, as represented by Equation 2.

Polarizing plate having engraved optical patterns and liquid crystal display including the same

A polarizing plate and an optical display apparatus including the same are provided. A polarizing plate includes: a polarizer; and a pattern layer stacked on a light exit surface of the polarizer, and the pattern layer includes a second resin layer and a first resin layer sequentially stacked from the polarizer; a first patterned portion including a plurality of first optical patterns is formed at an interface between the first resin layer and the second resin layer; and a second patterned portion including a plurality of second optical patterns is formed on a lower surface of the second resin layer, the first optical patterns and the second optical patterns satisfying Relations 1 and 2.

Polarizing plate and optical display apparatus comprising the same

A liquid crystal display apparatus includes: a liquid crystal panel; and a viewer-side polarizing plate stacked on a light exit surface of the liquid crystal panel, and the viewer-side polarizing plate includes a patterned layer including a first resin layer and a second resin layer having different indexes of refraction; and a patterned portion including multiple engraved optical patterns and a flat section between adjacent engraved optical patterns of the multiple optical patterns is formed at an interface between the first resin layer and the second resin layer, and the liquid crystal display apparatus satisfies Equation 1 herein and the engraved optical patterns have an aspect ratio of 0.3 or more.

Liquid crystal display apparatus

A polarizing plate includes: a polarizer; a pattern layer on one surface of the polarizer, the pattern layer including a first refractive index layer having at least one engraved pattern and a second refractive index layer having a filling pattern filling at least a portion of the engraved pattern, the first refractive index layer having a higher refractive index than the second refractive index layer; and a first protective layer. The polarizing plate has a structure in which the polarizer, the second refractive index layer, the first refractive index layer and the first protective layer are sequentially stacked in that order, or in which the polarizer, the first protective layer, the second refractive index layer and the first refractive index layer are sequentially stacked in that order. The first protective layer includes a base film including at least one resin of triacetylcellulose, polyethylene terephthalate, cyclic olefin polymer, and acrylic resins.

Polarizing plate and liquid crystal display comprising the same

Provided are a polarizing plate and a liquid crystal display device including same, the polarizing plate including a polarization film, a contrast-improving layer, and an anti-reflection film that are sequentially laminated. The minimum reflectance of the anti-reflection film is no greater than 0.45%. The anti-reflection film has a first substrate layer, a high-refraction layer and a low-refraction layer that are laminated in order from the contrast-improving layer. The contrast-improving layer includes a first resin layer and a second resin layer facing the first resin layer. The second resin layer is provided with a pattern part having optical patterns and a flat part between the optical patterns. The pattern part satisfies Equation 1 and the optical patterns have a base angle (&#x3b8;) of 60&#xb0; to 90&#xb0;. The slope of the reflectance of the polarization plate in Equation 2 is no greater than 0.3.

Polarizing plate and liquid crystal display device including same

Provided are a polarizing plate and an optical display device including same, the polarizing plate comprising a polarizing film and a contrast ratio enhancement layer formed on a light-emitting surface of the polarizing film, wherein the contrast ratio enhancement layer comprises: a first resin layer including a pattern unit having one or more engraved patterns and a flat portion formed between the engraved patterns; and a second resin layer directly formed on the pattern unit, wherein the engraved patterns have a base angle of approximately 75&#xb0; to approximately 90&#xb0;, the pattern unit satisfies formula 1, the first resin layer has a refractive index larger than that of the second resin layer, and the first resin layer includes a dye of which the maximum absorption wavelength is approximately 550 nm to approximately 620 nm.

Polarizing plate and optical display device including same

A polarizer and optical display device comprising the same are disclosed. Specifically, the polarizer comprises: a polarizing film; and a contrast ratio improving film formed on one surface of the polarizing film, wherein the contrast ratio improving film comprises a contrast ratio improving layer consisting of a first protective layer, and first and second resin layers facing each other, and the first resin layer has: pattern parts having two or more optical patterns on one surface thereof that faces the second resin layer and a flat part between the optical pattern and another immediately adjacent optical pattern.

Polarizer and optical display device comprising same

Provided are a polarizing plate and a liquid crystal display device comprising the same, wherein the polarizing plate comprises a polarizer, a contrast ratio improvement film, an adhesive layer, and an antireflection film, which are sequentially laminated therein, the contrast ratio improvement film comprises a first protective layer, and a first resin layer and a second resin layer which are opposite to each other, the first resin layer includes an optical pattern including a pattern portion having a flat portion on one surface opposite to the second resin layer, and the adhesive layer has a haze of about 5% to about 40%.

Polarizing plate with adhesive layer having specified haze and liquid crystal display device comprising same

Polarizing plate having optical patterns and liquid crystal display including the same

Provided are a polarizing plate and a liquid crystal display device including same, the polarizing plate including a polarization film, a contrast-improving layer, and an anti-reflection film that are sequentially laminated. The minimum reflectance of the anti-reflection film is no greater than 0.45%. The anti-reflection film has a first substrate layer, a high-refraction layer and a low-refraction layer that are laminated in order from the contrast-improving layer. The contrast-improving layer includes a first resin layer and a second resin layer facing the first resin layer. The second resin layer is provided with a pattern part having optical patterns and a flat part between the optical patterns. The pattern part satisfies Equation 1 and the optical patterns have a base angle (&#x3b8;) of 75&#xb0; to 90&#xb0;. The slope of the reflectance of the polarization plate in Equation 2 is no greater than 0.3.

Provided are a contrast ratio improving optical film, a polarizing plate comprising the same, and a liquid crystal display device comprising the same, wherein the contrast ratio improving optical film comprises a contrast ratio improving layer. The contrast ratio improving layer comprises a first resin layer and a second resin layer which faces the first resin layer, wherein the second resin layer comprises a pattern part having optical patterns and a flat part between the optical patterns. The optical patterns have at least one inclined surface with respect to the flat part, and the flat part or the inclined surface has a light absorption layer formed thereon. The contrast ratio improving optical film has a lowest reflectance of 0.5% or less.

Contrast ratio improving optical film, polarizing plate comprising same, and liquid crystal display device comprising same

Provided are an optical film for improving a contrast ratio, a polarizing plate comprising same, and a liquid crystal display comprising same, the optical film comprising a base layer and a contrast ratio-improving layer formed on the base layer, wherein the contrast ratio-improving layer comprises a first resin layer and a second resin layer directly formed on the first resin layer, wherein the refractive index of the first resin layer is different from that of the second resin layer, wherein the first resin layer comprises: a plurality of embossed first optical patterns formed to be separated in a first direction; a plurality of embossed second optical patterns formed to intersect with the first optical patterns and be separated in a second direction; and dented parts formed by the intersection of the first optical patterns and the second optical patterns, wherein the dented parts have a height lower than that of the first resin layer.

Optical film for improving contrast ratio, polarizing plate comprising same, and liquid crystal display comprising same

An optical film for improving contrast ratio, a polarizing plate including the same, and a liquid crystal display including the same are disclosed. The optical film for improving contrast ratio includes: a base layer and a contrast ratio improvement layer formed on the base layer, wherein the contrast ratio improvement layer includes a high refractive index resin layer including a patterned portion composed of one or more engraved patterns and a flat portion formed between the engraved patterns and a low refractive index resin layer directly formed on the patterned portion, the engraved patterns have a base angle of 75&#xb0; to about 90&#xb0;, and the patterned portion has a P/W value of greater than about 1 to about 10 or less (P is the cycle of the patterned portion (unit: &#x3bc;m) and W is the maximum width of the engraved pattern (unit: &#x3bc;m)).

Growing community of inventors

Suwon-si, South Korea

Young Hyun Ju