Abstract: The present invention provides a planar light source and an illumination apparatus which have higher design property than that of conventional ones. The planar light source includes: a planar light emitting panel which has a light emitting surface; and a decorative member which covers the light emitting surface of the planar light emitting panel. A light emitting region which emits light when the planar light source is turned on and a non-light-emitting frame region which surrounds the light emitting region are provided on the light emitting surface. The decorative member has a pattern forming section. The pattern forming section includes a frame shielding section which covers entirety of the frame region in the front view, and a light-emission shielding section which extends from the frame shielding section so as to divide the light emitting region into a plurality of regions.

Abstract: The present invention provides a planar light source and an illumination apparatus which have higher design property than that of conventional ones. The planar light source includes: a planar light emitting panel which has a light emitting surface; and a decorative member which covers the light emitting surface of the planar light emitting panel. A light emitting region which emits light when the planar light source is turned on and a non-light-emitting frame region which surrounds the light emitting region are provided on the light emitting surface. The decorative member has a pattern forming section. The pattern forming section includes a frame shielding section which covers entirety of the frame region in the front view, and a light-emission shielding section which extends from the frame shielding section so as to divide the light emitting region into a plurality of regions.

Abstract: There is provided a non-aqueous electrolytic solution comprising an electrolyte salt, a specific fluorine-containing solvent and a fluorine-containing cyclic carbonate represented by the formula (A1): wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3; at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and the non-aqueous electrolytic solution has further excellent noncombustibility and is suitable for lithium secondary batteries.

Abstract: The present invention provides an electrical double layer capacity comprising a non-aqueous electrolytic solution comprising (A) a solvent comprising a specific fluorine-containing cyclic carbonate and (B) an electrolyte salt comprising a cyclic quaternary onium salt comprising cyclic quaternary onium cation and PF6?, (CF3SO2)2N? or (C2F5SO2)2N?, and (C) a polarizable electrode, and having high withstanding voltage and assuring excellent solubility in a wide range of solvents for dissolving an electrolyte salt.

Abstract: There is provided an electrochemical device provided with an electrolytic solution comprising (I) a solvent for dissolving an electrolyte salt comprising (A) a fluorine-containing ether represented by the formula (1): Rf1—O—Rf2 wherein Rf1 and Rf2 are the same or different and each is a fluorine-containing alkyl group having 3 to 6 carbon atoms, (B) a cyclic carbonate, and (C) a chain carbonate being compatible with both of the fluorine-containing ether (A) and the cyclic carbonate (B), and (II) an electrolyte salt, in which the solvent (I) for dissolving an electrolyte salt comprises 30 to 60% by volume of the fluorine-containing ether (A), 3 to 40% by volume of the cyclic carbonate (B) and 10 to 67% by volume of the chain carbonate (C) based on the whole solvent (I), and when the electrochemical device is provided with such an electrolytic solution, no phase separation occurs even at low temperature, flame retardancy and heat resistance are excellent, solubility of an electrolyte salt is high, discharge

Abstract: There is provided an electrolytic solution causing no phase separation even at low temperatures, being excellent in flame retardancy and noncombustibility, assuring high solubility of an electrolyte salt, having a high discharge capacity, being excellent in charge-discharge cycle characteristics and being suitable for electrochemical devices such as lithium ion secondary batteries.

Abstract: There is provided a non-aqueous electrolytic solution comprising an electrolyte salt, a specific fluorine-containing solvent and a fluorine-containing cyclic carbonate represented by the formula (A1): wherein X1 to X4 are the same or different and each is —H, —F, —CF3, —CHF2, —CH2F, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3; at least one of X1 to X4 is —F, —CF3, —CF2CF3, —CH2CF3 or —CH2OCH2CF2CF3, and the non-aqueous electrolytic solution has further excellent noncombustibility and is suitable for lithium secondary batteries.

Abstract: The present invention provides an electrical double layer capacity comprising a non-aqueous electrolytic solution comprising (A) a solvent comprising a specific fluorine-containing cyclic carbonate and (B) an electrolyte salt comprising a cyclic quaternary onium salt comprising cyclic quaternary onium cation and PF6?, (CF3SO2)2N? or (C2F5SO2)2N?, and (C) a polarizable electrode, and having high withstanding voltage and assuring excellent solubility in a wide range of solvents for dissolving an electrolyte salt.

Abstract: There is provided an electrochemical device provided with an electrolytic solution comprising (I) a solvent for dissolving an electrolyte salt comprising (A) a fluorine-containing ether represented by the formula (1): Rf1—O—Rf2 wherein Rf1 and Rf2 are the same or different and each is a fluorine-containing alkyl group having 3 to 6 carbon atoms, (B) a cyclic carbonate, and (C) a chain carbonate being compatible with both of the fluorine-containing ether (A) and the cyclic carbonate (B), and (II) an electrolyte salt, in which the solvent (I) for dissolving an electrolyte salt comprises 30 to 60% by volume of the fluorine-containing ether (A), 3 to 40% by volume of the cyclic carbonate (B) and 10 to 67% by volume of the chain carbonate (C) based on the whole solvent (I), and when the electrochemical device is provided with such an electrolytic solution, no phase separation occurs even at low temperature, flame retardancy and heat resistance are excellent, solubility of an electrolyte salt is high, discharge

Abstract: A polyprenyl compound having formula (1) is stabilized by a tocopherol, an organic acid, a neutral amino acid or a basic amino acid: ##STR1## in which n is an integer of 1 to 3.