Abstract: An electrode assembly and a secondary battery comprising the same are provided. The secondary battery includes at least one electrode assembly formed by winding together a first electrode plate and a second electrode plate each coated with an active material layer, a current collector, and a case accommodating the electrode assemblies and the current collector.

Abstract: A battery may include a short circuit member connected to a terminal having a first polarity and a deformable conductive member having a second polarity, the deformable conductive member being insulated from the short circuit member, the deformable conductive member being configured to contact the short circuit member when a voltage applied thereto exceeds a predetermined voltage.

Abstract: An electrode assembly and a secondary battery comprising the same are provided. The secondary battery includes at least one electrode assembly formed by winding together a first electrode plate and a second electrode plate each coated with an active material layer, a current collector, and a case accommodating the electrode assemblies and the current collector.

Abstract: A secondary battery includes an electrode assembly, which has improved safety by reducing a density of an active material centrally positioned in the electrode assembly. In the secondary battery, an electrode assembly includes a first electrode plate, a second electrode plate and a separator between the first electrode plate and the second electrode plate, the first electrode plate including a first electrode current collector and a first active material layer on the first electrode current collector, the first active material layer including a first active material, a binder and a conductive agent, and a portion of the first active material layer at a central portion of the electrode assembly including the first active material at a lower density than a density of the first active material at a portion of the first active material layer at a peripheral portion of the electrode assembly.

Abstract: A battery may include a short circuit member connected to a terminal having a first polarity and a deformable conductive member having a second polarity, the deformable conductive member being insulated from the short circuit member, the deformable conductive member being configured to contact the short circuit member when a voltage applied thereto exceeds a predetermined voltage.

Abstract: A light excitation diffusion sheet for a backlight unit adapted to absorb a portion of light emitted from a light source of a blue wavelength or a mixed wavelength of a blue wavelength and at least one other wavelength, to emit light at different wavelengths from the light emitted from the light source, and to allow the rest of the light emitted from the light source to penetrate the sheet The light excitation-diffusion sheet comprises a light-exciting material exciting and amplifying the light from the light source and a light-diffusing material scattering and diffusing the light from the light source. The light-exciting material and the light-diffusing material are uniformly distributed in the light excitation-diffusion sheet The use of the light excitation-diffusion sheet enables production of edge light type and direct light type backlight units having diffusion and prism functions, good color purity and improved light efficiency at reduced costs.