Display apparatus and electronic apparatus
AssigneeSeiko Epson Corporation
InventorNobutaka Suzuki
Life of this patent
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Abstract
Aspects of the invention can provide a display apparatus using a transparent EL element that can be viewed by a viewer from both sides of the light-emitting surface of the EL element, wherein the display apparatus displays clearly visible images. The display apparatus can include a sheet composed of an EL element having a light-emitting layer interposed between two opposing transparent electrodes. A light-emitting element emitting light from both sides of the sheet can be interposed between a pair of transparent substrate. A pair of polarizers arranged so that their polarization axes intersect can also be disposed on light-emitting surfaces of the light-emitting element.
Claims4
A display apparatus, comprising:
- a pair of opposing transparent substrates;
- transparent electrodes interposed between the transparent substrates;
- an EL element having a light-emitting layer interposed between transparent electrodes and between the transparent substrates, the EL element being capable of selectively displaying images;
- a pair of a first polarizer and a second polarizer sandwiching the EL element therebetween, the first polarizer and the second polarizer being disposed so that their respective polarizing axes intersect;
- and
- a liquid crystal display apparatus including a liquid crystal element interposed between the first polarizer and the EL element, wherein
- while the EL element displays images, the liquid crystal display apparatus adjusts the liquid crystal element so that polarized light from the second polarizer is absorbed by the first polarizer, and
- while the EL element does not display images, the liquid crystal display apparatus adjusts the liquid crystal element so that polarized light from the second polarizer passes through the first polarizer.
Dependencies are inferred from the claim text.