Manufacture of flat panel displays
OwnerWilliam B. Hugleinventor
Life of this patent
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Abstract
A method of forming e.g. pixel elements on a flat panel display for use as a flat screen for a TV or a computer display includes forming a volume holographic image on a recording medium (21) by interference between an object beam (OB) of coherent light after passage through a mask (22) and a reference beam (RB1) of coherent light which is totally internally reflected at a surface on which the recording medium (21) is disposed, then replacing the mask (22) by the flat panel (26) and forming on a photo-resist or other photosensitive coating thereof an image of the holographic recording using a second reference beam (RB2) replayed in the opposite direction from the first reference beam.
Claims14
A method for forming a flat panel display, which includes forming a volume holographic image on a recording medium by interference between an object beam (OB) and a reference beam (RB1) of coherent light which is totally internally reflected at a surface on which the recording medium is disposed, then continuing by forming a plurality of holographic images on the recording medium in a stacked manner by successive exposures with different spacings between the mask and the recording medium, so that during replay each point of the flat panel display will have focussed thereon one or another of these stacked holographic images, replacing the mask with a flat panel display which has a coating (PC) of a photosensitive substance and forming an image of the holographic recordings on the photosensitive coating using a second reference beam (RB2) replayed in the opposite direction from the first reference beam.
A method for forming a flat panel display, comprising placing a flat panel display, which has a coating (PC) of a photosensitive substance thereon, at a position spaced from the surface on which a recording medium has been formed, the recording medium having formed thereon a plurality of stacked volume holographic images corresponding to that formed by interference between an object beam (OB) and a reference beam (RB1) of coherent light which is totally internally reflected at a surface on which the recording medium is disposed where the different volume holographic images are formed using different spacings between the mask and the recording medium, so that during replay each point of the flat panel display will have focussed thereon one or another of these stacked images and forming an image of the holographic recordings on the photosensitive coating using a second reference beam (RB2) replayed in the opposite direction from the first reference beam.
Dependencies are inferred from the claim text.