Skc Co., Ltd.

Sk Microworks Co., Ltd.

Samsung Electronics Co., Ltd.

Young Min Heo

Sechul Lee

Gun Uk Kim

Sang Min Choi

Seungwon Lee

Jang Won Lee

Da Woo Jeong

Se Chul Lee

Jeonghoon Lee

Jung Kyu Lee

Dawoo Jeong

Jin-Seok Park

Jihyuk Lim

Houn Baek

Ho Chun Kang

Jung Hee Ki

Jewon Yeon

Kyu-Hun Kim

Jung Won Yu

Byeong Jae Lim

A protection film according to an embodiment implements a very low reflectivity through a multilayer structure of which the refractive index is controlled and does not cause whitening and cracking to occur even in the case of frequent bending or folding thereof. Accordingly, the protection film is applied to a flexible display device, and especially to a cover of a foldable display device, thereby showing excellent optical and mechanical characteristics.

Polyester protection film for flexible display device

The present disclosure relates to a polyester resin composition including a polyester resin including a diol residue and a dicarboxylic acid residue, wherein the diol residue includes a cyclohexanedimethanol residue and the dicarboxylic acid residue includes an isophthalic acid residue and a terephthalic acid residue, wherein an amount of the isophthalic acid residue is 0 to 20 mol % when a total amount of the dicarboxylic acid residue is considered as 100 mol %, wherein an amount of the cyclohexanedimethanol residue is 50 to 100 mol % when a total amount of the diol residue is considered as 100 mol %, wherein the polyester resin composition includes an antioxidant, and wherein the antioxidant includes a phenol-based antioxidant, a phosphorus-based antioxidant, and a sulfur-based antioxidant.

Polyester resin composition, polyester film, and laminate for electronic device

The polyester film according to the embodiment can maintain its original characteristics even after a plurality of repeated folding by adjusting the deformed dimension as compared with the initial dimension of the film, in particular, by adjusting the ratio between the deformed dimensions in two in-plane directions perpendicular to each other to a specific range, in the cycle of straining and relaxing the film. Accordingly, the polyester film can be applied to a cover of a flexible display device, in particular, a foldable display device to exhibit excellent characteristics.

Polyester film and flexible display device comprising the same

An embodiment relates to an optical polyester film. The optical polyester film according to one embodiment can minimize the difference between the orientation angle at the center and the orientation angle at the end of the film while producing a difference between the tensile strengths in the lengthwise/widthwise directions of the film, thereby increasing mechanical strength and brightness and suppressing the occurrence of polarization Mura defects. Further, the optical polyester film employs a single layer film, and thus is more easily processed and has a slimmer thickness. Therefore, the optical polyester film can be usefully applied to small-sized thin film display devices and, specifically, can be favorably used as a substrate material of a prism sheet or a polarized reflection sheet.

Optical polyester film, and prism sheet or polarized reflection sheet comprising same

The polyester film according to an embodiment has a coefficient of determination (R) of the strain with respect to stress and a crystallinity adjusted to specific ranges, whereby it is possible to achieve the flexibility that does not cause deformation even when a certain stress is sustained for a long period of time and the resistant characteristics to the impact of external pressing. Accordingly, the polyester film can be applied to a cover of a flexible display device, in particular, a foldable display device to exhibit excellent characteristics.

Polyester film and flexible display apparatus comprising same

Provided is a high frequency communication apparatus and method for vehicle. The high frequency communication apparatus for vehicle includes a communication module configured to process a radio frequency (RF) signal; a cable having one end connected to the communication module; and an antenna module connected to the other end of the cable and configured to transmit through an antenna the RF signal delivered from the communication module, the antenna module including a compensator configured to compensate for a loss of the RF signal in the cable and a controller configured to determine an amount of compensation for the loss in the cable based on power of the RF signal transmitted from the compensator.

High frequency communication apparatus and method for vehicle

The optical multilayer film, which comprises a laminate in which a base layer, a primer layer, a hard coat layer, a first refractive layer, and a second refractive layer are sequentially laminated, has a very low reflectance and enhanced optical characteristics by adjusting the in-plane retardation of the base layer and the refractive indices of the respective layers. Thus, the optical component and the display device, which comprise the optical multilayer film, have a low reflectance and excellent other optical characteristics.

Optical multilayer film, and optical component and display device comprising the same

In the polyester film according to an embodiment, the strain with respect to tensile load and the crystallinity are adjusted to specific ranges, whereby it is possible to achieve the flexibility that does not cause deformation even when a certain load is sustained for a long period of time and the resistant characteristics to the impact of external pressing. Accordingly, the polyester film can be applied to a cover of a flexible display device, in particular, a foldable display device to exhibit excellent characteristics.

The polyester film according to the embodiment achieves the elasticity required for a cover of a flexible display by increasing the rate of increase in stress in an initial stage of strain to a certain level or higher. As a result, it is possible to maintain the original characteristics when it is applied to a cover of a flexible display device and subjected to a plurality of repeated folding. Accordingly, the polyester film can be applied to a cover of a flexible display device, in particular, a foldable display device to exhibit excellent characteristics.

The optical multilayer film, which comprises a laminate in which a base layer, a primer layer, and a hard coat layer are sequentially laminated, has enhanced mechanical properties while preventing rainbow stains and a reduction in the visibility by adjusting the in-plane retardation of the base layer and the refractive indices of the respective layers. Thus, the optical component and the display device, which comprise the optical multilayer film, have excellent optical characteristics and can operate normally even in harsh environments.

Embodiments relate to an optical film and a liquid crystal display device comprising the same. More specifically, the embodiments relate to an optical film that is excellent in optical characteristics and has no polarization unevenness since it comprises a base layer that has a low in-plane retardation and a low thickness direction retardation and has an excellent adhesiveness by virtue of a proper level of surface tension, a process for preparing the same, and a liquid crystal display device comprising the same.

Optical film and liquid crystal display device comprising the same

Provided is a high frequency communication apparatus for vehicle. The high frequency communication apparatus includes a single cable; a communication module connected to an end of the single cable and configured to transmit a radio frequency (RF) signal and a transmit (TX) serial communication signal, the communication module including a TX serial communication modulation circuit and a receive (RX) serial communication demodulation circuit; and an antenna module connected to the other end of the single cable and configured to receive and branch the RF signal and the TX serial communication signal, the antenna module including a front end module, a TX serial communication demodulation circuit, a controller configured to receive a demodulated TX serial communication signal to control the front end module and output an RX serial communication signal, and an RX serial communication modulation circuit.

High frequency communication apparatus for vehicle

A cable includes an insulating part and one or more conducting parts disposed inside the insulating part. The insulating part includes a polymer resin layer with a product of shrinkage ratios C, which is expressed as a product of a longitudinal shrinkage ratio and a transverse shrinkage ratio, of less than 0.24.

Cable with insulating part and method of producing cable insulating part

Embodiments relate to a protective film for a polarizer, a polarizing plate, and a display device comprising the same. The protective film for a polarizer according to the embodiments is improved in mechanical strength and minimized in rainbow strains by minimizing the difference in the orientation angle between the center and the edge of the film while generating a difference in the strengths in the longitudinal/transverse directions of the film. Hence, it can be advantageously used as a protective film for a polarizer.

Polarizer protective film, polarizing plate, and display device comprising same

Disclosed are a protective film for a polarizer with superior optical and mechanical properties, a polarizing plate including the same and a display device including the same.

Growing community of inventors

Gyeonggi-do, South Korea

Young Min Heo