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US 2023/0418075 A1Published application
Display apparatus for providing expanded viewing window
AssigneeSamsung Electronics Co., Ltd.
InventorsJong-Young Hong, Hongseok Lee, Young Kim
Life of this patent
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Abstract
A display apparatus capable of providing an expanded viewing window includes a light guide plate including an input coupler and an output coupler; and an image providing apparatus facing the input coupler to provide an image to the input coupler. The input coupler may include a plurality of sub input couplers configured to propagate the image provided from the image providing apparatus at different angles in the light guide plate.
Claims22
A display apparatus comprising:
- a light guide plate comprising an input coupler and an output coupler;
- and
- an image providing apparatus facing the input coupler and configured to provide an image to the input coupler,
- wherein the input coupler comprises a plurality of sub input couplers configured to propagate an image provided from the image providing apparatus at different angles in the light guide plate, and
- wherein the image providing apparatus comprises:
- a spatial light modulator comprising a plurality of display regions respectively corresponding to the plurality of sub input couplers;
- and
- a light source configured to provide coherent illumination light to the spatial light modulator, and
- wherein the display apparatus further comprises a diffraction grating disposed between the light source and the spatial light modulator, the diffraction grating being configured to diffract the coherent illumination light incident from the light source such that a respective traveling direction of the coherent illumination light incident on each display region of the plurality of display regions of the spatial light modulator is different from traveling directions of the coherent illumination light incident on other display regions of the plurality of display regions.
6 more elements
A display apparatus comprising:
- a light guide plate comprising an input coupler and an output coupler;
- and
- an image providing apparatus facing the input coupler and configured to provide an image to the input coupler,
- wherein the input coupler comprises a plurality of sub input couplers configured to propagate an image provided from the image providing apparatus at different angles in the light guide plate,
- wherein the image providing apparatus comprises:
- a spatial light modulator comprising a plurality of display regions respectively corresponding to the plurality of sub input couplers;
- and
- a light source configured to provide coherent illumination light to the spatial light modulator,
- wherein the plurality of display regions of the spatial light modulator comprises a first display region, a second display region, and a third display region, and
- wherein the plurality of sub input couplers comprises a first sub input coupler on which a first image that is −1st order diffracted by the first display region is incident, a second sub input coupler on which a second image that is 0th order diffracted by the second display region is incident, and a third sub input coupler on which a third image that is +1st order diffracted by the third display region is incident.
7 more elements
A display apparatus comprising:
- a light guide plate comprising an input coupler and an output coupler;
- and
- an image providing apparatus configured to provide a plurality of images traveling in different directions to the input coupler.
Dependencies are inferred from the claim text.