(CN1213098-A)      NOVELTY - The display device comprises polarized light separation film operating to transmit linearly polarized light polarized in one direction and to reflect another linearly polarized light. A solar battery having a dark color allows a dark-colored background to be displayed by light travelling along an optical path. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electronic watch using the display device.    USE -   For electronic watch.    ADVANTAGE -   Permits information such as numbers to be clearly distinguished from background when solar battery is placed within display plane of watch. Produces display on watch using light emitted from light emitting device in dark place where external light does not enter when solar battery is placed within display plane of watch. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the display device.    (JP11242086-A)      NOVELTY - The display device comprises polarized light separation film operating to transmit linearly polarized light polarized in one direction and to reflect another linearly polarized light. A solar battery having a dark color allows a dark-colored background to be displayed by light travelling along an optical path. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electronic watch using the display device.    USE -   For electronic watch.    ADVANTAGE -   Permits information such as numbers to be clearly distinguished from background when solar battery is placed within display plane of watch. Produces display on watch using light emitted from light emitting device in dark place where external light does not enter when solar battery is placed within display plane of watch. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the display device.    (US6229767-B1)      NOVELTY - The display device comprises polarized light separation film operating to transmit linearly polarized light polarized in one direction and to reflect another linearly polarized light. A solar battery having a dark color allows a dark-colored background to be displayed by light travelling along an optical path. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electronic watch using the display device.    USE -   For electronic watch.    ADVANTAGE -   Permits information such as numbers to be clearly distinguished from background when solar battery is placed within display plane of watch. Produces display on watch using light emitted from light emitting device in dark place where external light does not enter when solar battery is placed within display plane of watch. DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the display device.