Abstract: A structure includes a cavity structure including a display surface and a cavity in the display surface, and a light emitter in the cavity. The display surface includes a first area that displays information with light emitted from the light emitter in the cavity and a second area adjacent to the first area. A ratio of a first brightness of the first area in a non-display state to a second brightness of the second area is in a predetermined range including 1.

Abstract: A dielectric ceramic which is suitable for use in a laminated ceramic capacitor under a high-temperature environment, such as encountered in, for example, automobile use has a composition represented by the composition formula: (1?x) (Ba1-yCay)mTiO3+xCaTiO3+aRe2O3+bMgO+cMnO+dV2O3+eSiO2 in which Re is Gd, Dy, Y, Ho, and/or Er), 0.001?x?0.02, 0.08?y?0.20, 0.99?m?1.05, 0.01?a?0.04, 0.005?b?0.035, 0?c?0.01, 0?d?0.01, 0.01?e?0.04 when a, b, c, d, and e are each expressed in terms of parts by mol with respect to 1 mol of (1?x) (Ba,Ca)TiO3+xCaTiO3. This dielectric ceramic can constitute the dielectric ceramic layers of a laminated ceramic capacitor.

Abstract: A dielectric ceramic which is suitable for use in a laminated ceramic capacitor under a high-temperature environment, such as encountered in, for example, automobile use has a composition represented by the composition formula: (1?x) (Ba1-yCay)mTiO3+xCaTiO3+aRe2O3+bMgO+cMnO+dV2O3+eSiO2 in which Re is Gd, Dy, Y, Ho, and/or Er), 0.001?x?0.02, 0.08?y?0.20, 0.99?m?1.05, 0.01?a?0.04, 0.005?b?0.035, 0?c?0.01, 0?d?0.01, 0.01?e?0.04 when a, b, c, d, and e are each expressed in terms of parts by mol with respect to 1 mol of (1?x) (Ba,Ca)TiO3+xCaTiO3. This dielectric ceramic can constitute the dielectric ceramic layers of a laminated ceramic capacitor.

Abstract: A dielectric ceramic with stable insulation properties even after calcination under a reducing atmosphere, as is preferred for a laminated ceramic capacitor, is a CaTiO3 composition containing Sn. It is preferable for the dielectric ceramic to contain, as its main component, (Ca1-xBaxSny)TiO3 (0?x<0.2, 0.01?y<0.2) with a solution of Sn at the B site.

Abstract: A dielectric ceramic with stable insulation properties even after calcination under a reducing atmosphere, as is preferred for a laminated ceramic capacitor, is a CaTiO3 composition containing Sn. It is preferable for the dielectric ceramic to contain, as its main component, (Ca1-xBaxSny)TiO3 (0?x<0.2, 0.01?y<0.2) with a solution of Sn at the B site.