Abstract: A display apparatus comprises a display unit which has a plurality of organic EL elements two-dimensionally arranged to define pixels. Each organic EL element comprises a first electrode, an organic EL layer, and a second electrode laminated in order on an optically transparent substrate. One of the first electrode and second electrode is an optically transparent electrode, while the other is a non-optically transparent electrode. The non-optically transparent electrode is disposed to exist only in part of each pixel, as viewed from vertically above (for example, the width of the electrode is made smaller than the width of a pixel). In this way, the display unit can transmit light through portions of the pixels in which the non-optically transparent electrodes are not disposed. Preferably, the non-optically transparent electrode includes a mirror surface opposite to the organic EL layer.

Abstract: The present invention provides a ferrite magnetic material capable of attaining such magnetic properties that Br+(?)HcJ is 6200 or more even by sintering at a temperature of 1150° C. or lower. The ferrite magnetic material includes as a main phase thereof a ferrite phase having a hexagonal structure, the main phase being represented by the following composition formula (1): LaxCam?1?x?m(Fe12?yCoy)z with ? representing one or two of Ba and Sr; wherein the constituent ratios of the metal elements constituting the main phase satisfy the following conditions: x and m are the values in a region bounded by the points, A: (0.53, 0.27), B: (0.64, 0.27), C: (0.64, 0.35), D: (0.53, 0.45), E: (0.47, 0.45) and F: (0.47, 0.32) in the (x, m) coordinates shown in FIG. 2; 1.3?x/yz?1.8; and 9.5?12z?11.0.

Abstract: A display apparatus comprises a display unit which has a plurality of organic EL elements two-dimensionally arranged to define pixels. Each organic EL element comprises a first electrode, an organic EL layer, and a second electrode laminated in order on an optically transparent substrate. One of the first electrode and second electrode is an optically transparent electrode, while the other is a non-optically transparent electrode. The non-optically transparent electrode is disposed to exist only in part of each pixel, as viewed from vertically above (for example, the width of the electrode is made smaller than the width of a pixel). In this way, the display unit can transmit light through portions of the pixels in which the non-optically transparent electrodes are not disposed. Preferably, the non-optically transparent electrode includes a mirror surface opposite to the organic EL layer.

Abstract: A sintered ferrite magnet having a ferrite phase with a hexagonal structure as the main phase, wherein the composition of the metal elements composing the main phase is represented by the following general formula (1): RxCamA1?x?m(Fe12?yMy)z: ??(1), x, m, y and z in formula (1) satisfying all of the conditions represented by the following formulas (2)-(6): 0.2?x?0.5: ??(2) 0.13?m?0.41: ??(3) 0.7x?m?0.15: ??(4) 0.18?yz?0.31: ??(5) 9.6?12z?11.8: ??(6), and wherein the density of the sintered ferrite magnet is at least 5.05 g/cm3, and the crystal grains of the sintered ferrite magnet satisfy all of the conditions represented by the following formulas (7) and (8), where L ?m is the average for the maximum value and S ?m is the average for the minimum value among the diameters passing through the center of gravity of each grains in the crystal cross-section parallel to the c-axis direction of hexagonal structures. L?0.95: ??(7) 1.8?L/S?2.

Abstract: The present invention provides a ferrite magnetic material capable of attaining such magnetic properties that Br+(?)HcJ is 6200 or more even by sintering at a temperature of 1150° C. or lower. The ferrite magnetic material includes as a main phase thereof a ferrite phase having a hexagonal structure, the main phase being represented by the following composition formula (1): LaxCam?1?x?m(Fe12?yCoy)z with ? representing one or two of Ba and Sr; wherein the constituent ratios of the metal elements constituting the main phase satisfy the following conditions: x and m are the values in a region bounded by the points, A: (0.53, 0.27), B: (0.64, 0.27), C: (0.64, 0.35), D: (0.53, 0.45), E: (0.47, 0.45) and F: (0.47, 0.32) in the (x, m) coordinates shown in FIG. 2; 1.3?x/yz?1.8; and 9.5?12z?11.0.