Directional pixel for use in a display screen
AssigneeLeia Inc.
InventorsDavid A. Fattal, James A. Brug, Zhen Peng, Marco Fiorentino, Raymond G. Beausoleil
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Abstract
A directional pixel for use in a display screen is disclosed. The directional pixel receives a planar lightbeam and includes a light propagating layer and a grating to scatter a portion of the planar lightbeam into a directional lightbeam having a direction and angular spread controlled by the grating.
Claims23
A directional pixel for use in a display screen, the directional pixel to receive a planar lightbeam and comprising:
- a light propagating layer to propagate the planar lightbeam;
- and
- a grating in the light propagating layer to scatter a portion of the planar lightbeam out of the light propagating layer as a directional lightbeam having a direction and an angular spread controlled by the grating,
- wherein the grating in the light propagating layer is one or both of in a surface of the light propagating layer and in a material on the propagating layer surface.
A grating for use in a directional pixel in a display screen, the grating being configured to scatter an incident planar lightbeam into a directional lightbeam, the grating comprising a plurality of substantially parallel and slanted grooves having a period, an orientation, a length, and a width, the period and the orientation being configured to control a direction of the directional lightbeam, the length and the width being configured to control an angular spread of the directional lightbeam, wherein the grating is in a light propagating layer configured to guide the incident planar lightbeam.
A directional pixel for use in a display screen, comprising:
- a light propagating layer arranged on a substrate layer to carry a planar lightbeam;
- and
- a grating arranged in the light propagating layer to scatter the planar lightbeam into a directional lightbeam having a direction and an angular spread controlled by the grating.
Dependencies are inferred from the claim text.