Sk on Co., Ltd.

Sk Innovation Co., Ltd.

Berndorf Band Gmbh

Cholho Lee

Jaechan Ryu

Myoung Lae Kim

Yu Na Shim

Han Sol Lee

Chanwoo Kim

Kwangjin Chung

Hyukjun Kim

Yooseock Hwang

Kinam Chung

Juntae Choi

Youngkeun Lee

Yongkyoung Kim

Jean Lee

Kiyup Kim

Yonggyun Cho

Jongmoon Sung

Sungho Son

Kibeom Kim

Provided are a novel boron-containing compound and an electrolyte solution additive for a secondary battery including the same. The electrolyte solution for a secondary battery provided in one embodiment includes the novel boron-containing compound, thereby suppressing the decomposition of an electrolyte solution to improve the capacity and the life characteristics of a battery.

Boron-containing compound and electrolyte solution additive for secondary battery including the same

The present disclosure relates to a novel boron-containing compound and an electrolyte additive for a secondary battery containing the same. An electrolyte for a secondary battery provided in one embodiment contains the novel boron-containing compound, such that decomposition of the electrolyte may be suppressed, thereby improving a capacity and a lifespan of the battery.

Boron-containing compound and electrolyte additive for secondary battery containing the same

An apparatus of testing an all-solid state secondary battery by nail penetration includes a pressurizing unit pressurizing a battery cell, a penetrating member inserted into a through-hole provided in the pressurizing unit to pass through the battery cell, and an auxiliary pressing unit disposed between the pressurizing unit and the battery cell and transferring pressure applied by the pressurizing unit to the battery cell. The auxiliary pressing unit is disposed between the through-hole and the battery cell in a form to block the through-hole.

Apparatus of testing all-solid state secondary battery by nail penetration

Disclosed is a wide casting belt, and more particularly, a wide casting belt used for manufacturing a film in a gel state by casting dope used during the manufacture of a polarizing plate for a liquid crystal display, and an optical compensation film, etc. A method for manufacturing a wide film using the wide casting belt, and a wide film manufactured with the wide casting belt are disclosed.

Wide casting belt, method for manufacturing a wide film, and wide film

A method for manufacturing a wide film comprises a casting operation, a stretching operation, and a trimming operation. The casting operation is a process of casting a film using a wide casting belt including a central belt, a left belt having a right end formed integrally with a left end of the central belt through a left joint in a length direction of the central belt, and a right belt having a left end formed integrally with a right end of the central belt through a right joint in the length direction of the central belt. The stretching operation is a process of stretching a film stripped off from the wide casting belt using a tenter. The trimming operation is a process of trimming predetermined parts of left and right sides of the stretched film. In the trimming operation, mark parts by the left and right joints are also trimmed.

Method for manufacturing a wide film, and wide film

Provided is a microporous polyolefin composite film with a thermally stable porous layer at high temperature, particularly, to the microporous polyolefin composite film in which the thermally stable porous layer at high temperature, which contains organic or inorganic particles and heat-resistant polymer having aromatic ring in main chain and also having a melting temperature or a glass transition temperature of 170 to 500&#xb0; C., is formed on one surface or both surfaces of a polyolefin microporous film by a phase separation, wherein the composite film with the porous layer has a permeability of 1.5&#xd7;10to 20.0&#xd7;10Darcy, a meltdown temperature of 160 to 300&#xb0; C., a MD/TD shrinkage of 1 to 40% at a temperature of 150&#xb0; C. for 60 minutes.

Microporous polyolefin composite film with a thermally stable porous layer at high temperature

The present invention relates to a wide casting belt, and more particularly, to a wide casting belt used for manufacturing a film in a gel state by casting dope used during the manufacture of a polarizing plate for a liquid crystal display, and an optical compensation film, etc. The present invention also relates to a method for manufacturing a wide film using the wide casting belt, and to a wide film manufactured with said wide casting belt.

Provided are an optical compensation film and a method for producing the same. The optical compensation film includes a nematic liquid crystal compound including a compound having at least two mesogens linked to each other with a constant angle, and has hybrid alignment in which the alignment of the liquid crystal compound varies gradually along the thickness direction.

Optical compensation film with hybrid arrangement of nematic liquid crystals consisting of connected mesogens with an angle and the method of manufacturing the same

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Daejeon, South Korea

Cholho Lee