Two-dimensional/three-dimensional (2D/3D) switchable display backlight and electronic display
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United States of America Patent
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Dec 1, 2020
Grant Date -
Nov 16, 2017
app pub date -
Jun 30, 2017
filing date -
Jan 10, 2015
priority date (Note) -
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Abstract
A two-dimensional/three-dimensional (2D/3D) switchable display backlight and a 2D/3D switchable electronic display employ a switchable diffuser to support 2D/3D switching. The 2D/3D switchable display backlight includes a plate light guide, a multibeam diffraction grating to couple light out of the plate light guide and the switchable diffuser to intercept and selectably either pass or scatter light beams of the coupled-out light. The 2D/3D switchable electronic display includes the backlight and further includes a light valve array to modulate the coupled-out light. The switchable diffuser facilitates selectability between a three-dimensional pixel and a two-dimensional pixel of the 2D/3D switchable electronic display.
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