Abstract: A display includes a backlight (40). In addition, the display includes for each of at least one wavelength band, a plurality of layers placed above the backlight (40). The plurality of layers includes an absorption layer (13,23,33), a luminescent layer (14,24,34) and a reflective layer (15,25,35). The absorption layer (12,22,32) is capable of absorbing light in a wavelength band while being substantially transparent to light in other wavelength bands. The luminescent layer (14,24,34) is capable, in response to light from the backlight (40), of emitting light within the wavelength band. The reflective layer (15,25,35) is adapted to reflect light in the wavelength band while being substantially transparent to light in other wavelength bands.

Abstract: A display includes a backlight (40). In addition, the display includes for each of at least one wavelength band, a plurality of layers placed above the backlight (40). The plurality of layers includes an absorption layer (13,23,33), a luminescent layer (14,24,34) and a reflective layer (15,25,35). The absorption layer (12,22,32) is capable of absorbing light in a wavelength band while being substantially transparent to light in other wavelength bands. The luminescent layer (14,24,34) is capable, in response to light from the backlight (40), of emitting light within the wavelength band. The reflective layer (15,25,35) is adapted to reflect light in the wavelength band while being substantially transparent to light in other wavelength bands.

Abstract: A display element includes a variable optical element that changes appearance in response to changes in current, and a programmable resistance in series with the variable optical element. The resistance of the programmable resistance decreases in response to a first current in a first direction. The resistance of the programmable resistance increases in response to a second current in a second direction.

Abstract: An information storage device includes a cathodoconductive medium and pairs of electrodes in contact with the medium. Data storage areas are located within regions between the electrode pairs. A read operation on data storage areas between a pair of electrodes may be performed by creating an electric field between the electrodes, scanning an electron beam across the storage areas, and monitoring a cathodocurrent created by the carriers. Changes in magnitude of the cathodocurrent indicates the states of the storage areas. The energy beam may be supplied by an electron emitter or a near-field optical source.