Abstract: The present invention relates to an air foil journal bearing in which air is introduced between a foil and a rotor rotating at high speed and generates pressure to support a radial load of the rotor and allow the rotor to rotate smoothly, and more particularly, to a housing fixing structure of an air foil journal bearing that improves durability against external impact or vibration by restricting an axial movement of a bump by means of two opposite ends of the bump and a top foil fixing portion.

Abstract: A liquid crystal display device includes a liquid crystal display panel; a first polarizer on a first surface of the liquid crystal display panel; a second polarizer on a second surface of the liquid crystal display panel; and a first light path control film on a first surface of the second polarizer to refract the light polarized by the second polarizer to a direction minimizing a gray inversion on a display surface of the liquid crystal display panel.

Abstract: A liquid crystal display device includes a liquid crystal display panel, a compensation film for compensating a viewing angle decline caused by improper alignment of liquid crystal molecules in the liquid crystal display panel, and an isotropic layer between the compensation film and the liquid crystal display panel.

Abstract: The present invention relates to an optimum designing method of matching layers of a thickness-mode piezoelectric transducer in which a front load effective impedance when viewing in a load direction from a front side of a piezoelectric plate is used as a design parameter when designing an acoustic matching layer. An impedance characteristic of each acoustic matching layer is determined using a new matching formula. An optimized design parameter is determined in a region in which an amplitude in a peak amplitude contour map and a depth of a pulse width contour map using video waveforms for statistically evaluating a sensitivity and resolution of a piezoelectric transducer.

Abstract: An electrolyte composition, a lithium battery using the electrolyte composition, and a method of manufacturing the lithium battery are provided. The electrolyte composition includes: a lithium salt, and an organic solvent containing a nitrogen-containing compound, propane sultone, and vinylene carbonate and/or cyclohexylbenzene. The electrolyte composition ensures a battery safety when operated at high temperature without performance degradation.