Sk Microworks Co., Ltd.

Skc Co., Ltd.

Sk Microworks Solutions Co., Ltd.

C'est Image, Inc.

Heung Sik Kim

Dae Seong Oh

Han Jun Kim

Jin Woo Lee

Sun Hwan Kim

Jung Hee Ki

Sang Hun Choi

Hyejin Kim

Sunhwan Kim

Sung Jin Chung

Kyu-Hun Kim

Jewon Yeon

Hak Soo Lee

Joo Young Jung

Seung Hyun Cha

Yun Hee Seo

Seung Chul Lee

Yong Ahn Ha

Ui Chol Yl

Jin Heon Kim

Woo Hyun Kwon

Jong Sun Won

Yun-Hee Seo

Hak Dae Lee

Tae Sun Shin

The embodiments relate to a polyamide-based film that is excellent in optical properties and mechanical properties, to a process for preparing the same, and to a cover window and a display device comprising the same. There are provided a polyamide-based film, which comprises a polyamide-based polymer and has a plasticity characteristic value represented by the following equation of 18.45 to 19.97%, a process for preparing the same, and a cover window and a display device comprising the same: Plasticity characteristic value (%)=(100−nIT)/(HIT/HM). In this equation, nIT, HIT, and HM are measured according to the ISO 14577 standard with a nanoindenter, nIT is the elasticity (%), HIT is the indentation hardness (N/mm), and HM is the composite hardness (N/mm).

Polyamide-based film, preparation method thereof, cover window and display device comprising the same

The embodiments provide a polyamide-based film, which comprises a polyamide-based polymer and has a light resistance index of 0.660 GPa-1 or less as represented by the following Equation 1, whereby it has excellent mechanical properties, optical properties, and light resistance. [Equation 1] Light resistance index=ΔYI/Y. In Equation 1, Y is the modulus of the film, and ΔYI is the rate of change in yellow index (YI) of the film before and after a light resistance test in which UV rays are irradiated to the film at 60° C., the UV irradiation is stopped, and water is sprayed at 50° C.

Polyamide-based film, method of preparing polyamide-based film, cover window and display device comprising the same

The embodiments relate to a polyamide-imide film excellent in optical properties and mechanical properties, to a process for preparing the same, and to a cover window and a display device comprising the same. There are provided a polyamide-imide film, which comprises a polyamide-imide polymer and has a reduced modulus of a top surface measured by the nanoindentation method according to the ISO 14577-2 standard of 5.6 GPa or more and a haze of 1% or less, a process for preparing the same, and a cover window and a display device comprising the same.

Polyamide-imide film, preparation method thereof, cover window and display device comprising the same

The embodiments relate to a polyamide-based film excellent in optical properties such as transmittance, haze, and yellow index and mechanical properties such as modulus and thickness uniformity, to a process for preparing the same, and to a cover window and a display device comprising the same. The polyamide-based film comprises a polyamide-based polymer and has an XRD pattern comprising a first peak whose highest point is located in a section where 2θ is 14° to 16°.

Polyamide-based film, preparation method thereof, and cover window and display device comprising same

The embodiments relate to a polyamide-based composite film with excellent curl characteristics, mechanical characteristics, and optical characteristics. The polyamide-based composite film comprises a base film comprising a polyamide-based polymer and a functional layer disposed on the base film, wherein when the polyamide-based composite film is placed on a surface light source such that the base film is in contact with the surface light source, light is irradiated from the surface light source, and the luminance value measured in the normal direction of the surface light source is 100%, the luminance value measured in the direction of 50° from the normal direction of the surface light source is 25% or more.

Polyamide-based composite film and display device comprising same

Embodiments relate to a polyamide-based film that is colorless and transparent, is excellent in mechanical properties and optical properties, has a wide angle of view by securing at least a certain level of luminance at various angles, and, in particular, has gloss characteristics similar to those of glass, a process for preparing the same, and a cover window comprising the same. The polyamide-based film comprises a polyamide-based polymer, wherein when the polyamide-based film is placed on a surface light source, light is irradiated from the surface light source, and the luminance value (L) measured in the normal direction of the surface light source is 100%, the luminance value (L) measured in the direction of 50&#xb0; from the normal direction of the surface light source is 25% or more.

Polyamide-based film, preparation method thereof, and cover window comprising same

The embodiments relate to a polyamide-based film excellent in optical properties, mechanical properties, and processing suitability and to a cover window and a display device comprising the same. The polyamide-based film comprises a polyamide-base polymer, wherein a dipolar solvent compatibility represented by the following equation is 18.5 to 24: Dipolar solvent compatibility=&#x221a;{square root over ((&#x3c3;&#x2212;&#x3b4;1)+(&#x3c3;&#x2212;&#x3b4;1))}. In the equation, &#x3c3;is a value of a dispersible component in surface energy of the polyamide-based film, &#x3c3;is a value of a polar component in surface energy of the polyamide-based film, &#x3b4;1is a value of a dispersible component in Hansen solubility parameter of the dipolar solvent, and &#x3b4;1a value of a dipolar component in Hansen solubility parameter of the dipolar solvent.

Polyamide-based film, and cover window and display device comprising same

The embodiments relate to a polyamide-based composite film that has excellent curl characteristics, mechanical properties, and optical properties, as well as, in particular, is effective in preventing reflection in the visible light region, remarkably reduces the rainbow phenomenon, and achieves a texture similar to that of glass, and a display device comprising the same. There are provided a polyamide-based composite film, which comprises a base film comprising a polyamide-based polymer; and a functional layer disposed on the base film, wherein the in-plane retardation (Re) measured with light having a wavelength of 550 nm is 100 nm to 220 nm, and a display device comprising the same.

Polyamide-based composite film and display device comprising the same

The polymer film according to an embodiment comprises at least one polymer resin selected from the group consisting of a polyamide-based resin, a polyimide-based resin, and a polyamide-imide-based resin, and has a haze of 0.6% or less and an in-plane retardation within a specific range for each wavelength band in the visible light region. The polymer film, which has an in-plane retardation within a specific range for each wavelength band in the visible light region, is excellent in transparency and optical properties, and it can remarkably reduce the rainbow phenomenon and improve the reflection appearance.

Polymer film and preparation method thereof

A resin film for laminated glass, laminated glass including the resin film, and a process for manufacturing the laminated glass are disclosed. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 &#x3bc;m and a maximum static friction coefficient at 20&#xb0; C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35&#xb0; C. is 40 to 310 &#x3bc;m/N.

Resin film for laminated glass, and laminated glass and preparation thereof

Embodiments relate to a resin film for laminated glass, laminated glass comprising the resin film, and a process for manufacturing the laminated glass. The resin film for laminated glass comprises a resin layer comprising a polyvinyl acetal resin and a contact surface in direct contact with glass, wherein the contact surface has an Rz roughness of 25 to 90 &#x3bc;m and a maximum static friction coefficient at 20&#xb0; C. of 0.85 to 1.60, and the compressive elastic deformation index measured in the perpendicular direction from the contact surface at 35&#xb0; C. is 40 to 310 &#x3bc;m/N.

An image sensor with a high dynamic range is provided. The image sensor includes a semiconductor substrate, a plurality of light-receiving elements formed on the semiconductor substrate, and light-shield films formed on upper ends of some of the light-receiving elements to partially block light incident upon each of the some light-receiving elements. Hence, an image sensing device including the image sensor can detect an accurate image regardless of whether the environment is bright or dark.

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Seoul, South Korea

Heung Sik Kim