Grating assembly, light source apparatus and driving method of the same
First Claim
1. A grating assembly, comprising:
- a diffraction grating, which is divided into a plurality of sub-pixels, each sub-pixel being divided into four regions, the diffraction grating being configured to change light transmitted through any one of the four regions into parallel light and to cause light transmitted through different regions of the four regions of each sub-pixel to have different directions, each sub-pixel of the diffraction grating corresponds to one of a red sub-pixel, a green sun-pixel, and a blue sub-pixel of a display device;
a selector, which is divided into a plurality of sub-pixels each of which corresponds to one of the red sub-pixel, the green sun-pixel, and the blue sub-pixel of the display device, each sub-pixel of the selector being divided into four regions corresponding to the four regions of the corresponding sub-pixel of the diffraction grating, the selector being configured to control whether each region of the four regions of each sub-pixel of the selector transmits light or not; and
a liquid crystal lens, wherein the selector and the diffraction grating are positioned on a same side of the liquid crystal lens;
the liquid crystal lens comprises a liquid crystal layer provided between two substrates, a driving electrode and a common electrode configured to drive the liquid crystal layer, and the liquid crystal lens is divided into a plurality of sub-pixels corresponding to the sub-pixels of the diffraction grating, and is configured to control a direction of light transmitted through each sub-pixel of the liquid crystal lens,wherein the selector, the diffraction grating and the liquid crystal lens are arranged in sequence along a light-emitting direction; and
wherein orthographic projections of the four regions of each sub-pixel of the diffraction grating on the selector completely overlap the four regions of the corresponding sub-pixel of the selector.
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Accused Products
Abstract
The present disclosure, belonging to the field of display technology, provides a grating assembly, a light source apparatus and a driving method thereof, which can solve a problem that an existing light source cannot provide light with a controllable direction. The grating assembly of the present disclosure comprises: a diffraction grating divided into a plurality of sub-pixels, each sub-pixel being divided into a plurality of regions, the diffraction grating being configured to change light transmitted through each region into parallel light and cause light transmitted through different regions of a same sub-pixel to have different directions; and a selector divided into a plurality of sub-pixels corresponding to sub-pixels of the diffraction grating, each sub-pixel being divided into a plurality of regions corresponding to the regions of the sub-pixel of the diffraction grating, the selector being configured to control whether each region thereof transmits light or not.
2 Citations
18 Claims
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1. A grating assembly, comprising:
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a diffraction grating, which is divided into a plurality of sub-pixels, each sub-pixel being divided into four regions, the diffraction grating being configured to change light transmitted through any one of the four regions into parallel light and to cause light transmitted through different regions of the four regions of each sub-pixel to have different directions, each sub-pixel of the diffraction grating corresponds to one of a red sub-pixel, a green sun-pixel, and a blue sub-pixel of a display device; a selector, which is divided into a plurality of sub-pixels each of which corresponds to one of the red sub-pixel, the green sun-pixel, and the blue sub-pixel of the display device, each sub-pixel of the selector being divided into four regions corresponding to the four regions of the corresponding sub-pixel of the diffraction grating, the selector being configured to control whether each region of the four regions of each sub-pixel of the selector transmits light or not; and a liquid crystal lens, wherein the selector and the diffraction grating are positioned on a same side of the liquid crystal lens;
the liquid crystal lens comprises a liquid crystal layer provided between two substrates, a driving electrode and a common electrode configured to drive the liquid crystal layer, and the liquid crystal lens is divided into a plurality of sub-pixels corresponding to the sub-pixels of the diffraction grating, and is configured to control a direction of light transmitted through each sub-pixel of the liquid crystal lens,wherein the selector, the diffraction grating and the liquid crystal lens are arranged in sequence along a light-emitting direction; and wherein orthographic projections of the four regions of each sub-pixel of the diffraction grating on the selector completely overlap the four regions of the corresponding sub-pixel of the selector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification