Abstract: Provided are an electrolyte for a lithium secondary battery and a lithium secondary battery including the electrolyte, wherein the electrolyte further includes a solid salt as an additive, wherein the solid salt contains one type of cation selected from ammonium-based cations and a thiocyanate anion (SCN?). According an embodiment, the lithium secondary battery may have improved life characteristics by providing the electrolyte containing the additive.

Abstract: Provided is an electrolyte solution for a lithium secondary battery and a lithium secondary battery having the same, the electrolyte solution further including an expressed solid salt which has an ammonium-based cation and a cyanide anion (CN?). According to an embodiment of the present invention, an electrolyte solution including the solid salt may be provided, and thus the problem of decrease in stability of a negative electrode due to copper ions that are dissolved from a copper current collector in a high-temperature environment may be resolved. Therefore, a lithium secondary battery having excellent battery performance such as battery capacity, charging and discharging efficiency, and cycle characteristics even under a high-temperature condition may be provided.

Abstract: An electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent, and a solid salt as an additive, the solid salt including at least one cation selected from ammonium-based cations and an azide anion (N3—). Using the electrolyte solution including the additive may provide a lithium secondary battery with improved high-temperature retention characteristics.

Abstract: Provided is an electrolyte solution for a lithium secondary battery and a lithium secondary battery having the same, the electrolyte solution further including an expressed solid salt which has an ammonium-based cation and a cyanide anion (CN?). According to an embodiment of the present invention, an electrolyte solution including the solid salt may be provided, and thus the problem of decrease in stability of a negative electrode due to copper ions that are dissolved from a copper current collector in a high-temperature environment may be resolved. Therefore, a lithium secondary battery having excellent battery performance such as battery capacity, charging and discharging efficiency, and cycle characteristics even under a high-temperature condition may be provided.

Abstract: Provided are an electrolyte for a lithium secondary battery and a lithium secondary battery including the electrolyte, wherein the electrolyte further includes a solid salt as an additive, wherein the solid salt contains one type of cation selected from ammonium-based cations and a thiocyanate anion (SCN?). According an embodiment, the lithium secondary battery may have improved life characteristics by providing the electrolyte containing the additive.

Abstract: An electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent, and a solid salt as an additive, the solid salt including at least one cation selected from ammonium-based cations and an azide anion (N3—). Using the electrolyte solution including the additive may provide a lithium secondary battery with improved high-temperature retention characteristics.

Abstract: Provided are an electrolyte solution for a lithium secondary battery, and a lithium secondary battery including the electrolyte solution. The electrolyte solution for a lithium secondary battery includes a lithium salt, an organic solvent, and further quaternary ammonium hexafluorophosphate as a solid salt.

Abstract: Provided are a lithium manganese oxide positive active material for a lithium ion secondary battery and a lithium ion secondary battery including the same. The lithium manganese oxide positive active material includes a spinel lithium manganese oxide of three or more types of particles having different sizes mixed therein, wherein first type particles have an average diameter of 5 ?m or greater, second type particles have an average diameter of 1 ?m or less, third type particles have an average diameter of 200 nm or less, and the average diameter of the second type particles is greater than that of the third type particles.

Abstract: A method for preparing a lithium manganese oxide positive active material for a lithium ion secondary battery, which has spherical spinel-type lithium manganese oxide particles having two or more different types of sizes, the method including uniformly mixing manganese oxide having two or more different types of sizes with a lithium containing compound, and heat treating the resultant mixture to obtain lithium manganese oxide.

Abstract: Provided are a lithium manganese oxide positive active material for a lithium ion secondary battery and a lithium ion secondary battery including the same. The lithium manganese oxide positive active material includes a spinel lithium manganese oxide of three or more types of particles having different sizes mixed therein, wherein first type particles have an average diameter of 5 ?m or greater, second type particles have an average diameter of 1 ?m or less, third type particles have an average diameter of 200 nm or less, and the average diameter of the second type particles is greater than that of the third type particles.

Abstract: Provided is a positive electrode active material for a lithium ion secondary battery including layer-structured lithium metal oxide expressed by the following Chemical Formula 1 and at least one selected from the group consisting of spinel-structured lithium metal oxides and olivine-structured lithium metal oxides. xLiMO2·(1?x)Li2MnO3??(1) (where M is one or more selected from the group consisting of nickel (Ni), cobalt (Co), and manganese (Mn), and 0<x<1.

Abstract: Provided is a positive electrode for a lithium ion secondary battery sequentially including a positive electrode collector, a positive electrode active material layer able to insert/extract lithium ions, and a lithium ion conductive layer.

Abstract: Provided are a positive active material including a spinel lithium manganese oxide surface-coated with one or more types of nanoparticles selected from olivine-type lithium metal phosphate and metal oxide, a method of preparing the same and a lithium secondary battery using the same. The positive active material provides a lithium secondary battery having improved high-temperature cycle life characteristic and capacity per weight.

Abstract: An optical filter for compensating for color shift is provided in front of a display panel of a display device. The optical filter includes a background layer and a green wavelength absorption pattern provided with a predetermined thickness on the background layer. The green wavelength absorption pattern absorbs a green wavelength of light. The green wavelength absorption pattern contains a material that absorbs a green wavelength of light in the range of 510 nm to 560 nm, and can also contain a white light absorbing material. A green's complementary color absorbing part absorbs a wavelength of light complementary to green, and contains at least one of a material absorbing a blue wavelength of light in the range of 440 nm to 480 nm and a material absorbing a red wavelength of light in the range of 600 nm to 650 nm.

Abstract: A method for preparing a lithium manganese oxide positive active material for a lithium ion secondary battery, which has spherical spinel-type lithium manganese oxide particles having two or more different types of sizes, the method including uniformly mixing manganese oxide having two or more different types of sizes with a lithium containing compound, and heat treating the resultant mixture to obtain lithium manganese oxide.

Abstract: A transparent conductive film includes first refractive transparent thin films and metal thin films. The first refractive transparent thin films and metal thin films are repeatedly layered over a transparent substrate. Each of second refractive thin films having a smaller refractive index than the first refractive thin films is interposed between a corresponding first refractive transparent thin film and a corresponding metal thin film. Each second refractive thin film has a thickness ranging from 10% to 65% of that of each of the first refractive thin films.

Abstract: Disclosed are an external light-shielding layer for a display filter preventing occurrence of ghosting using a difference between refractive indexes of a base substrate and an external light-shielding part, and a display filter and display apparatus including the external light-shielding layer. The external light-shielding layer for the display filter comprises a base substrate made of a transparent resin; and at least one external light-shielding part arranged on a surface of the base substrate and filled with an external light-absorption material, wherein ny of a refractive index of the base substrate is less than or equal to nx of a refractive index of the external light-shielding part.

Abstract: An optical member of an optical filter provided for a display device includes a colorant which can selectively absorb light with a predetermined wavelength. The optical member satisfies a following expression: 0??E*=?{square root over (?a*2+?b*2)}<5, where ?E* indicates the difference between reflected color and transmitted color under D65 standard light source. a* and b* correspond to achromatic colors satisfying following expressions: ?2.0?a*?2.0, and ?2.0?b*?2.0. An optical member of an optical filter provided for a display device includes a colorant which can selectively absorb light with a predetermined wavelength. The colorant may be a non-fluorescent colorant. The colorant includes a color adjusting colorant and a neon-cutting colorant. An optical filter for a display device includes this optical member.

Abstract: An optical filter for compensating for color shift is provided in front of a display panel of a display device. The optical filter includes a background layer and a green wavelength absorption pattern provided with a predetermined thickness on the background layer. The green wavelength absorption pattern absorbs a green wavelength of light. The green wavelength absorption pattern contains a material that absorbs a green wavelength of light in the range of 510 nm to 560 nm, and can also contain a white light absorbing material. A green's complementary color absorbing part absorbs a wavelength of light complementary to green, and contains at least one of a material absorbing a blue wavelength of light in the range of 440 nm to 480 nm and a material absorbing a red wavelength of light in the range of 600 nm to 650 nm. A first thick-film layer, a first thin-film layer, and a second thick-film layer are stacked over one another in the order named.

Abstract: A hybrid optical film, a display device having the same, and a method of manufacturing the same are provided. The hybrid optical film is provided in front of a display module of a display device to serve as a display filter. The hybrid optical film is in the form of a single-film. The hybrid optical film includes a film substrate; a first optical pattern directly formed on one side of the film substrate; and a second optical pattern directly formed on the other side of the film substrate. The hybrid optical film can reduce manufacturing costs due to a simplified structure and improve productivity due to a simplified manufacturing process.