Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Byeong Do Kwak

Il Jin Kim

Ik Hwan Cho

Sung Hyun Mun

Ji Ho Kim

Gwang Hwan Lee

Jae Hyun Han

Hyung Rang Moon

Woo Jin Lee

Seon Hee Shin

Jee Hee Kim

Ji Won Kang

Eun Hwa Lee

Yong Tae Kim

Jin Young Lee

In Chul Hwang

Tae Ho Kim

Chung Kun Cho

Eun Hwan Jeong

Sung Kook Kim

Young Kwon Kim

Sang Keol Lee

Kenji Hamada

Sung Han Im

Seok Won Choi

In Chui Hwang

Tae Jung Kim

Kyu Ha Chung

An adhesive film, an optical member including the same, and an optical display including the same are provided. An adhesive film has a tan δ ratio at 25° C. of about 1 to about 2 as calculated by Equation 1 and a tan δ ratio at −20° C. of about 0.1 to about 1.5 as calculated by Equation 2, and is formed of an adhesive composition including a monomer mixture including a hydroxyl group-containing (meth)acrylic acid ester.

Adhesive film, optical member comprising the same and optical display comprising the same

An adhesive film and a display member, the adhesive film being formed of an adhesive composition that includes a monomer mixture comprising a hydroxyl group-containing (meth)acrylate and a comonomer, wherein the adhesive film has a recovery rate of about 40% to about 99%, the recovery rate being determined according to Method A as described herein, and wherein the adhesive film has a bubble generation area of about 0%, the bubble generation area being determined according to Method B as described herein.

Adhesive film and display member including the same

An adhesive film has an average slope of about −9.9 to about 0, as measured over a temperature range of about −20° C. to about 80° C. in a graph depicting a temperature-dependent storage modulus distribution of the adhesive film where the x-axis represents temperature (° C.) and the y-axis represents storage modulus (kPa). The adhesive film also has a storage modulus at about 80° C. of about 10 kPa to about 1,000 kPa.

Adhesive composition, adhesive film prepared from the same and display member including the same

An adhesive film and a display member including the same are disclosed. The adhesive film is formed of an adhesive composition including: a copolymer of a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer; and nanoparticles. The adhesive film has a creep at −20° C. of about 50 μm to about 100 μm and a gel fraction of about 50% to about 75%.

Adhesive film and display member comprising the same

Provided are an adhesive film, an optical member including the same, and an optical display device including the same, the adhesive film being formed from a monomer mixture comprising an alkyl group-containing acrylate and a hydroxyl group-containing acrylate, wherein the adhesive film has a modulus of 80 kPa or less at &#x2212;20&#xb0; C., and the adhesive film has a value of 40% to 140% in equation 1 at 25&#xb0; C.

Adhesive film, optical member including same, and optical display device including same

An adhesive film is formed of an adhesive composition that includes a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer, and nanoparticles. The adhesive film has a glass transition temperature (Tg) of about &#x2212;20&#xb0; C. or less, an index of refraction of about 1.40 to about 1.55, and a haze of about 3% or less at a thickness of 100 &#x3bc;m.

An adhesive film and a display member including the same are disclosed. The adhesive film is formed of an adhesive composition including: a copolymer of a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer; and nanoparticles. The adhesive film has a creep at &#x2212;20&#xb0; C. of about 50 &#x3bc;m to about 100 &#x3bc;m and a gel fraction of about 50% to about 75%.

An adhesive film has an average slope of about &#x2212;9.9 to about 0, as measured over a temperature range of about &#x2212;20&#xb0; C. to about 80&#xb0; C. in a graph depicting a temperature-dependent storage modulus distribution of the adhesive film where the x-axis represents temperature (&#xb0; C.) and the y-axis represents storage modulus (kPa). The adhesive film also has a storage modulus at about 80&#xb0; C. of about 10 kPa to about 1,000 kPa.

An adhesive film, an optical member including the same, and an optical display including the same are provided. The adhesive film is formed of a monomer mixture including a hydroxyl group-containing (meth)acrylate and an alkyl group-containing (meth)acrylate, and has a bubble generation area ratio of 0%, as measured on a specimen (length&#xd7;width: 13 cm&#xd7;3 cm) by repeating the described cycle 10 times, in which the specimen is prepared by sequentially stacking a polyethylene terephthalate film (thickness: 50 &#x3bc;m), the adhesive film (thickness: 100 &#x3bc;m) and a polyethylene terephthalate film (thickness: 100 &#x3bc;m) to have a three-layer structure, and is bent towards the PET film (thickness: 50 &#x3bc;m) such that the specimen is placed between frames having a gap of about 1 cm therebetween and the length of the specimen is halved and the cycle is sequentially accomplished for 24 hours.

A flexible display device of the present invention comprises a photoelectric element part; a first adhesive film formed on the photoelectric element part; a touch function part formed on the first adhesive film; a second adhesive film formed on the touch function part; and a window film formed on the second adhesive film; wherein the first adhesive film or the second adhesive film has an average slope of about &#x2212;9.9 to about 0 at &#x2212;20&#xb0; C. to 80&#xb0; C. based on x-axis for the distribution of storage modulus versus temperature in the function of x-axis of temperature (&#xb0; C.) and y-axis of storage modulus (KPa) and wherein the first adhesive film or the second adhesive film has a storage modulus of about 10 KPa or more at 80&#xb0; C.

Flexible display device

A flexible display apparatus includes a display unit, a first adhesive film on the display unit, an optical film on the first adhesive film, a second adhesive film on the optical film, and a window film on the second adhesive film, and the second adhesive film has a higher modulus than the first adhesive film at &#x2212;20&#xb0; C. to 25&#xb0; C.

Flexible display apparatus

Disclosed is a flexible display apparatus. The flexible display apparatus includes a display part, a first adhesive film, an optical film, a second adhesive film, and a window film sequentially stacked, and the second adhesive film has a water-vapor permeability of about 200 g/m&#xb7;24 hr or less, and the first adhesive film has a lower restoration force than the second adhesive film, as calculated by the Equation B set forth herein.

An adhesive film, an optical member including the same, and an optical display including the same are disclosed. The adhesive film has a folding evaluation parameter 1 of about 900% to about 1,300% at 25&#xb0; C., as calculated by Equation 1 and a folding evaluation parameter 2 of about 40% to about 95% at 60&#xb0; C., as calculated by Equation 2, and includes a hydroxyl group-containing (meth)acrylic copolymer.

Adhesive film, optical member including the same, and optical display including the same

An adhesive composition including a monomer mixture including a hydroxyl group-containing (meth)acrylate and a comonomer; and organic particles, the organic particles having an average particle diameter of about 10 nm to about 400 nm.

Growing community of inventors

Suwon-si, South Korea

Byeong Do Kwak