Device and method for optical resizing and backlighting
AssigneeOMS Displays Ltd.
InventorYosi Shani
Life of this patent
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Abstract
A backlight assembly for feeding illuminating light to a passive display panel is disclosed. The backlight assembly comprises a plurality of waveguides being formed and/or embedded in at least one substrate and arranged to feed illuminating light to each sub-pixel position of the passive display panel in a manner such that each pixel region is illuminated by at least two waveguides, wherein each waveguide of the at least two waveguides is disposed to illuminate one sub-pixel position of the pixel region by a respective color channel.
Claims48
A backlight assembly for feeding illuminating light to a passive display panel having a plurality of pixel regions each being defined by at least two sub-pixel positions respectively corresponding to at least two color channels characterizing the pixel region, the backlight assembly comprising a plurality of waveguides being formed and/or embedded in at least one substrate and arranged to feed illuminating light to each sub-pixel position in a manner such that each pixel region is illuminated by at least two waveguides, wherein each waveguide of said at least two waveguides is disposed to illuminate one sub-pixel position of said pixel region by a respective color channel.
An optical resizing element, comprising a substrate formed of a plurality of layers, each layer of said plurality of layers having an arrangement of waveguides forming a planar light circuit in said layer and extending from a first region of said layer to a second region of said layer thereby defining a circumferential boundary within said layer, wherein the length characterizing said circumferential boundary is smaller at said first region than at said second region, such as to provide optical resizing in one dimension.
An optical resizing element, comprising a plurality of layers forming a substrate having a first facet and a second facet being larger than said first facet, each layer of said plurality of layers having an arrangement of substantially parallel waveguides formed and/or embedded in said layer and extending from a first region of said layer to a second region of said layer, said plurality of layers arranged in a partially overlapping optical arrangement whereby the second region of each layer is optically exposed at said second facet such as to provide optical resizing in one dimension.
An optical resizing device, comprising:
- a plurality of layers forming a substrate having a first facet and a second facet, said plurality of layers being arranged in a partially overlapping optical arrangement;
- each layer of said plurality of layers having an arrangement of waveguides formed and/or embedded in said layer and extending from a first region of said layer to a second region of said layer thereby defining a circumferential boundary within said layer, wherein the length characterizing said circumferential boundary is smaller at said first region than at said second region, and wherein said second region is optically exposed at said second facet.
A method of manufacturing an optical resizing device, comprising:
- (a) forming on a substrate a plurality of waveguides extending from a first region of said substrate to a second region of said substrate thereby defining a circumferential boundary within said substrate, wherein the length characterizing said circumferential boundary is smaller at said first region than at said second region;
- (b) repeating said step (a) a plurality of times, thereby providing a plurality of layers;
- and
- (c) stacking said plurality of layers in a partially overlapping optical arrangement whereby the second region of each layer is optically exposed, so as to form a first facet and a second facet, said second facet being defined by optically exposed portion of said plurality of layers, thereby manufacturing the optical resizing device.
Dependencies are inferred from the claim text.