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US 2023/0408826 A1Published application
Near-eye display architectures
AssigneeMeta Platforms Technologies, LLC
InventorsChulwoo OH, Agnes LEE, Linghui RAO
Life of this patent
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Abstract
Disclosed herein are various near-eye display architectures, including kaleidoscopic waveguide display architectures, geometrical waveguide displays with improved pupil replication density, liquid crystal displays with improved brightness uniformity, tiled display panels for field of view expansion, and display modules including over-molded frame with integrated heat sink fins.
Claims20
A liquid crystal display (LCD) of a near-eye display, the LCD comprising:
- a backlight unit configured to emit light;
- a thin-film-transistor (TFT) array including pixel control circuits and an array of apertures configured to transmit light;
- a diffractive optical element between the TFT array and the backlight unit, wherein the diffractive optical element is configured to, at two or more different locations of the diffractive optical element, deflect the light emitted from the backlight unit by different respective deflection angles towards the TFT array;
- a color filter on a side of the TFT array opposing the diffractive optical element, wherein the color filter comprises an array of color filter elements, and wherein each color filter element of the array of color filter elements is positioned along a chief ray direction of the near-eye display with respect to a corresponding aperture of the array of apertures of the TFT array;
- and
- a liquid crystal layer between the TFT array and the color filter and controlled by the pixel control circuits.
3 more elements
A near-eye display comprising:
- a liquid crystal display (LCD) configured to display an image;
- and
- display optics configured to project the image to a user's eye,
- wherein the LCD comprises:
- a backlight unit configured to emit light;
- a thin-film-transistor (TFT) array including control circuits and an array of apertures configured to transmit light;
- a diffractive optical element between the TFT array and the backlight unit, wherein the diffractive optical element is configured to, at two or more different locations of the diffractive optical element, deflect the light emitted from the backlight unit by different respective deflection angles towards the TFT array;
- a color filter on a side of the TFT array opposing the diffractive optical element, wherein the color filter comprises an array of color filter elements, and wherein each color filter element of the array of color filter elements is positioned along a chief ray direction of the near-eye display with respect to a corresponding aperture of the array of apertures of the TFT array;
- and
- a liquid crystal layer between the TFT array and the color filter and controlled by the control circuits to modulate incident light.
7 more elements
Dependencies are inferred from the claim text.