Patent ID: 12261155

DETAILED DESCRIPTION

Embodiments of the present disclosure include apparatuses and methods for a stacked lighting emitting diode (LED) hologram display. A stacked LED hologram display can include a first array of LEDs that are configured to emit red light received by a meta-optics panel configured to display a first portion of a holographic image, a second array of LEDs that are configured to emit green light received by a meta-optics panel configured to display a second portion of a holographic image, and a third array of LEDs that are configured to emit blue light received by a meta-optics panel configured to display a third portion of a holographic image. The first, second, third arrays of LEDs can be configured to emit light on a number of meta-optics panels configured to produce (e.g., display) a holographic image (e.g., by shaping and enhancing the light emitted by the arrays). A pixel of the stacked LED display can comprise an LED from the first array, an LED from the second array, and an LED from the third array that are in a common row and column position of their respective array. For example, a pixel can be comprised of an LED in the first column and eight row of the first array, an LED in the first column and eight row of the second array, and an LED in the first column and eight row of the third array.

In a number of embodiments, the stacked LED hologram display can include a number of actuators configured to adjust a position of a first array of LEDs in a first direction (e.g., x direction) and a second direction orthogonal to the first direction (e.g., y direction), adjust a position of a second array of LEDs in the first direction and the second direction, and adjust a position of a third array of LEDs in the first direction and the second direction. The actuators can be configured to adjust the position of the arrays of LEDs in the first direction and the second direction to control a packing scheme of the pixels of the display. A packing scheme can refer to the position of the LEDs of a pixel relative to each other in the first direction and the second direction. For example, a pixel comprising a red LED, a green LED, and a blue LED can have a packing scheme where the LEDs completely overlap each other, partially overlap each other, and/or do not overlap each other. The position of the first array of LEDs in the first and second directions can allow the first array to emit light on a first meta-optics panel configured to produce a first portion of a holographic image. The position of the second array of LEDs in the first and second directions can allow the second array to emit light on a second meta-optics panel configured to produce a second portion of a holographic image. The position of the third array of LEDs in the first and second directions can allow the third array to emit light on a third meta-optics panel configured to produce a third portion of a holographic image.

In a number of embodiments, the stacked LED hologram display can include a number of actuators configured to adjust a position of each LED of a first array of LEDs in a first direction (e.g., x direction) and second direction (e.g., y direction) and an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis. The number of actuators can adjust a position of each LED of a second array of LEDs in the first direction and the second direction and an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis. The number of actuators can adjust a position of each LED of a third array of LEDs in the first direction and the second direction and an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis. The actuators can be configured to adjust the position of the arrays of LEDs in the first direction and second direction to control a packing scheme of the pixels of the display and/or an angle at which light emitted from the LED arrays is received by a meta-optics panel. A packing scheme can refer to the position of the LEDs of a pixel relative to each other in the first direction and second direction. For example, a pixel comprising a red LED, a green LED, and a blue LED can have a packing scheme where the LEDs completely overlap each other, partially overlap each other, and/or do not overlap each other. The position of the LEDs in the first array of LEDs in the first and second directions and angles of rotation around the x, y, and z axes can allow the first array to emit light on a meta-optics panel configured to produce a first portion (e.g., red light) of a holographic image. The position of the LEDs in the second array of LEDs in the first and second directions and angles of rotation around the x, y, and z axes can allow the second array to emit light on the meta-optics panel configured to produce a second portion (e.g., green light) of the holographic image. The position of the LEDs in the third array of LEDs in the first and second directions and angles of rotation around the x, y, and z axes can allow the third array to emit light on the meta-optics panel configured to produce a third portion (e.g., blue light) of the holographic image.

In a number of embodiments, each of the LEDs in the stack of LED arrays can be individually controlled, activated, and deactivated. The LEDs can be individually controlled, activated, and deactivated to control power consumption of the device and/or control the intensity of the light emitted from each of the LEDs.

As used herein, designators such as “N,” “M,” etc., particularly with respect to reference numerals in the drawings, indicate that a number of the particular feature so designation can be included. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” can include both singular and plural referents, unless the context clearly dictates otherwise. In addition, “a number of,” “at least one,” and “one or more” (e.g., a number of memory devices) can refer to one or more memory devices, whereas a “plurality of” is intended to refer to more than one of such things. Furthermore, the words “can” and “may” are used throughout this application in a permissive sense (i.e., having the potential to, being able to), not in a mandatory sense (i.e., must). The term “include,” and derivations thereof, means “including, but not limited to.” The terms “coupled,” and “coupling” mean to be directly or indirectly connected physically or for access to and movement (transmission) of commands and/or data, as appropriate to the context. The terms “data” and “data values” are used interchangeably herein and can have the same meaning, as appropriate to the context.

The figures herein follow a numbering convention in which the first digit or digits correspond to the figure number and the remaining digits identify an element or component in the figure. Similar elements or components between different figures can be identified by the use of similar digits. For example,104can reference element “04” inFIG.1, and a similar element can be referenced as204inFIG.2. As will be appreciated, elements shown in the various embodiments herein can be added, exchanged, and/or eliminated so as to provide a number of additional embodiments of the present disclosure. In addition, the proportion and/or the relative scale of the elements provided in the figures are intended to illustrate certain embodiments of the present disclosure and should not be taken in a limiting sense.

FIG.1is a functional block diagram a stacked light emitting diode (LED) display100in accordance with a number of embodiments of the present disclosure. Display100includes controller110(e.g., a processor, control circuitry, hardware, firmware, and/or software), a first array of LEDs104-1, a second array of LEDs104-2, a third array of LEDs104-3, a first meta-optics panel106-1, a second meta-optics panel106-2, and a third meta-optics panel106-3. First array104-1, second array104-2, and third array104-3can be configured in a stack and can be parallel to each other. For example, array104-3can be on top of array104-2and array104-2can be on top of array104-1. First meta-optics panel106-1can be positioned between array104-1and104-2and be configured to receive light from array104-1, second meta-optics panel106-2can be positioned between array104-2and104-3and be configured to received light from array104-2, and third meta-optics panel106-3can be positioned above array104-3and be configured to receive light from array104-3. A number of embodiments, can include one meta-optics panel106that is positioned above array104-3and is configured to receive light from array104-1,104-2, and104-3.

First array104-1, second array104-2, and third array104-3can be micro-LED arrays, where each micro-LED can be controlled and provides light for a pixel of display100. First array104-1can be configured to emit red light, second array104-2can be configured to emit green light, and third array104-3can be configured to emit blue light, such that display100produces an image (e.g., a holographic image in a red green blue (RGB) format).

The display100may be a television display, a computer monitor display, and/or a touchscreen display of a mobile device, such as a smartphone, for example and be configured to display a holographic image (e.g., hologram). The controller110can be communicatively coupled to the LED arrays104-1,104-2, and104-3of display100. As used herein, “communicatively coupled” can include coupled via various wired and/or wireless connections between devices such that data can be transferred in various directions between the devices. The coupling need not be a direct connection, and in some examples, can be an indirect connection. Controller110can include hardware, firmware, and/or software to control the LED arrays104-1,104-2, and104-3of display100. Controller110can send signals to arrays104-1,104-2, and104-3to activate and/or deactivate the LEDs. LED arrays104-1,104-2, and104-3can include circuitry and electrodes such that each LED is controllable (e.g., addressable) by controller110. Controller110can individually activate and/or deactivate each LED of arrays104-1,104-2, and104-3.

In a number of embodiments, display100can received inputs from a camera, a computer, and/or an internet of things (IoT) device, among other input devices, to produce a holographic image. For example, a camera used during a medical procedure can provide an input to display100such that a holographic image of the portion of the body and medical instruments used during the medical procedure are displayed. Display100could also receive inputs to display holographic images that could provide instructions for assembling and/or fixing objects, a 3 dimensional view when arranging objects, and/or a 3-dimensional view indicating an inventory status (e.g., a refrigerator or pantry), among other inputs.

FIG.2is a functional block diagram of a stacked light emitting diode (LED) hologram display including arrays of LEDs, meta-optics panels, and a number of actuators in accordance with a number of embodiments of the present disclosure.FIG.2includes display an exploded view of LED arrays204-1,204-2, and204-3and meta-optics panels206-1,206-2, and206-3of display200. Each LED array204-1,204-2, and204-3can include a number of LEDs205arranged in row and columns. InFIG.2, each LED array204-1,204-2, and204-3includes 16 LEDs arranged in 4 rows and 4 columns. LED arrays204-1,204-2, and204-3can have any number of rows and columns of LEDS and in a number of embodiments have thousands of rows and columns of LEDs.FIG.2includes 4 rows and 4 columns for ease of illustration.

In a number of embodiments, display200can include a number pixels, where an LED at a particular row and column position of each LED array204-1,204-2, and204-3comprise a pixel. For example, inFIG.2, a pixel of display200comprises LED205-1in row 4, column 2 of array204-1, LED205-2in row 4, column 2 of array204-2, and LED205-3in row 4, column 2 of array204-3. The pixel that includes LEDs205-1,205-2, and205-3can include light emitted from LEDs205-1,205-2, and205-3. The pixel that includes LEDs205-1,205-2, and205-3can emit light that is part of an RGB holographic image, where LED205-1can be configured to emit red light, LED205-2can be configured to emit green light, and LED205-3can be configured to emit blue light.

Display200can include a number of actuators222-1that are configured to move array204-1in the first direction (e.g., x direction) and a number of actuators224-1that are configured to move array204-1in the second direction (e.g., y direction). Display200can include a number of actuators222-2that are configured to move array204-2in the first direction (e.g., x direction) and a number of actuators224-2that are configured to move array204-2in the second direction (e.g., y direction). Display200can include a number of actuators222-3that are configured to move array204-3in the first direction (e.g., x direction) and a number of actuators224-3that are configured to move array204-3in the second direction (e.g., y direction). Actuators222-1,224-1,222-2,224-2,222-3, and224-3can be configured to move arrays204-1,204-2, and204-3to control the packing scheme of the LEDs of arrays204-1,204-2, and204-3. The packing scheme can be the position of an LED of a pixel relative to the other LEDs of the pixel. For example, actuators222-1can move array204-1to the right such that the LEDS in array204-1are offset in the first direction relative to the LEDs of array204-2and204-3. The packing scheme of the pixels can be controlled to control image properties of the holographic image displayed by display200. For example, the packing scheme can be changed to control the illumination intensity, brightness, color gamut, gray level, contrast, uniformity, resolution, saturation, white balance, and/or spectral sensitivity, among other image properties, of holographic images displayed by display200.

Meta-optics panel206-1can be configured to receive light from array204-1and be configured to display a first portion (e.g., red light) of a holographic image. Meta-optics panel can receive light from an array and transmit light through the panel to project a holographic image (e.g., by shaping and enhancing the light emitted by the array). Meta-optics panel206-2can be configured to receive light from array204-2and be configured to display a second portion (e.g., green light) of a holographic image. Meta-optics panel206-3can be configured to receive light from array204-3and be configured to display a third portion (e.g., blue light) of a holographic image. In a number of embodiments, where the actuators are configured to adjust the position of the arrays and/or LEDs in the first direction and the second direction, but not the angles of rotation (e.g., the arrays and/or LEDs have fixed angles of rotation), such as inFIG.2, each array is associated with a meta-optics panel to produce a portion of a holographic image.

FIG.3is a functional block diagram of a stacked light emitting diode (LED) hologram display including arrays of LEDs, a meta-optics panel, and a number of actuators in accordance with a number of embodiments of the present disclosure.FIG.3includes display an exploded view of LED arrays304-1,304-2, and304-3of display300and meta-optics panel306. Each LED array304-1,304-2, and304-3can include a number of LEDs305arranged in row and columns. InFIG.3, each LED array304-1,304-2, and304-3includes 16 LEDs arranged in 4 rows and 4 columns. LED arrays304-1,304-2, and304-3can have any number of rows and columns of LEDS and in a number of embodiments have thousands of rows and columns of LEDs.FIG.3includes 4 rows and 4 columns for ease of illustration.

In a number of embodiments, display300can include a number pixels, where an LED at a particular row and column position of each LED array304-1,304-2, and304-3comprise a pixel. For example, inFIG.3, a pixel of display300comprises LED305-1in row 4, column 2 of array304-1, LED305-2in row 4, column 2 of array304-2, and LED305-3in row 4, column 2 of array304-3. The pixel that includes LEDs305-1,305-2, and305-3can include light emitted from LEDs305-1,305-2, and305-3. The pixel that includes LEDs305-1,305-2, and305-3can emit light that is part of an RGB holographic image, where LED305-1can be configured to emit red light, LED305-2can be configured to emit green light, and LED305-3can be configured to emit blue light.

Display300can include a number of actuators322-1that are configured to individually move each LED of array304-1in the first direction (e.g., x direction), a number of actuators324-1that are configured to individually move each LED of array304-1in the second direction (e.g., y direction), and a number of actuators326-1that are configured to adjust an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis for each LED of array304-1. The number of actuators322-1can be configured such that each LED of array304-1is coupled to one actuator of the number of actuators322-1and to individually control movement of each LED in the first direction. The number of actuators324-1can be configured such that each LED of array304-1is coupled to one actuator of the number of actuators324-1and to individually control movement of each LED in the second direction. The number of actuators326-1can be configured such that each LED of array304-1is coupled to one actuator of the number of actuators326-1and to individually control an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis for each LED of array304-1.

Display300can include a number of actuators322-2that are configured to individually move each LED of array304-2in the first direction (e.g., x direction), a number of actuators324-2that are configured to individually move each LED of array304-2in the second direction (e.g., y direction), and a number of actuators326-2that are configured to adjust an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis for each LED of array304-2. The number of actuators322-2can be configured such that each LED of array304-2is coupled to one actuator of the number of actuators322-2and to individually control movement of each LED in the first direction. The number of actuators324-2can be configured such that each LED of array304-2is coupled to one actuator of the number of actuators324-2and to individually control movement of each LED in the second direction. The number of actuators326-2can be configured such that each LED of array304-2is coupled to one actuator of the number of actuators326-2and to individually control an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis for each LED of array304-2.

Display300can include a number of actuators322-3that are configured to individually move each LED of array304-3in the first direction (e.g., x direction) and a number of actuators324-3that are configured to individually move each LED of array304-3in the second direction (e.g., y direction), and a number of actuators326-3that are configured to adjust an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis for each LED of array304-3. The number of actuators322-3can be configured such that each LED of array304-3is coupled to one actuator of the number of actuators322-3and to individually control movement of each LED in the first direction. The number of actuators324-3can be configured such that each LED of array304-3is coupled to one actuator of the number of actuators324-3and to individually control movement of each LED in the second direction. The number of actuators326-3can be configured such that each LED of array304-3is coupled to one actuator of the number of actuators326-3and to individually control an angle of rotation (α) around the x-axis, an angle of rotation (β) around the y-axis, and an angle of rotation (γ) around the z-axis for each LED of array304-3.

Actuators322-1,324-1,326-1,322-2,324-2,326-2,322-3,324-3, and326-3can be configured to individually move each of the LEDs of arrays304-1,304-2, and304-3to control the packing scheme and angle of rotation of the pixels comprising the LEDs of arrays304-1,304-2, and304-3. The packing scheme can be the position of an LED of a pixel relative to the other LEDs of the pixel. For example, actuators322-1can move LED305-1to the right such that LED305-1in array304-1is offset in the first direction relative to the LED305-2of array304-2and LED305-3of array304-3. The packing scheme and angles of rotation around the x, y, and z axes can allow the first array to emit light on meta-optics panel306configured to produce a first portion (e.g., red light) of a holographic image. The position of the LEDs in the second array of LEDs in the first and second directions and angles of rotation around the x, y, and z axes can allow the second array to emit light on meta-optics panel306configured to produce a second portion (e.g., green light) of the holographic image. The position of the LEDs in the third array of LEDs in the first and second directions and angles of rotation around the x, y, and z axes can allow the third array to emit light on meta-optics panel306configured to produce a third portion (e.g., blue light) of the holographic image The packing scheme of the pixels can be controlled to control image properties of the image displayed by display300. For example, the packing scheme can be changed to control the brightness, color gamut, gray level, contrast, uniformity, resolution, saturation, white balance, and/or spectral sensitivity, among other image properties, of images displayed by display300. In a number of embodiments, where actuator are configured to control movement of each LED of the LED arrays in the first direction and second direction and control angles of rotation around the x, y, and z axes for each LED of the LED arrays, one meta-optics panel (e.g. panel306ofFIG.3) can be configured to produce a holographic image with red light, green light, and blue light.

FIGS.4A-4Bare functional block diagrams in the form of an apparatus having a stacked light emitting diode (LED) hologram display including a controller in accordance with a number of embodiments of the present disclosure. InFIG.4A, display400can include substrate412, first array of LEDs404-1, second array of LEDs404-2, third array of LEDs404-3, first meta-optics panel406-1, second meta-optics panel406-2, third meta-optics panel406-3, cover414, and controller410. Display400can include first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3formed on substrate412. First array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3can be stacked on each other and configured such that light emitted from the first array of LEDs404-1is directed to first meta-optics panel406-1that is configured to display a first portion of a holographic image, light emitted from the second array of LEDs404-2is directed to second meta-optics panel406-2that is configured to display a second portion of a holographic image, and light emitted from the third array of LEDs404-3is directed to third meta-optics panel406-3that is configured to display a third portion of a holographic image. Cover414can be comprised of glass and other materials, such as polarizers. Cover414can protect the arrays of LEDs from damage.

InFIG.4B, display400can include substrate412, first array of LEDs404-1, second array of LEDs404-2, third array of LEDs404-3, meta-optics panel406, cover414, and controller410. Display400can include first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3formed on substrate412. First array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3can be stacked on each other and configured such that light emitted from the first array of LEDs404-1is directed to meta-optics panel406that is configured to display a first portion of a holographic image, light emitted from the second array of LEDs404-2is directed to meta-optics panel406that is configured to display a second portion of a holographic image, and light emitted from the third array of LEDs404-3is directed to meta-optics panel406that is configured to display a third portion of a holographic image. First array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3can be moved by actuators to control movement of each LED of the LED arrays in the first direction (e.g., x direction) and second direction (e.g., y direction) and control angles of rotation around the x, y, and z axes for each LED of the LED arrays and meta-optics panel406can be configured to produce a holographic image with red light, green light, and blue light from the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3, respectively.

First array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3can be coupled to controller410and can be configured to receive signals from controller410to activate and deactivate the LEDs. In a number of embodiments, controller410can send a signal or signals to individually activate and/or deactivate each LED of first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3. For example, controller410can send signals to the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3such that only a portion of the LEDs of the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3are activated. The controller can activate only a portion of the LEDs of first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3to control the power consumption of display400. Also, controller410can send signals with various magnitudes to control the light emitted by the LEDs of the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3. The signals and the magnitude of the signals sent by controller410to the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3can control the illumination intensity, brightness, color gamut, gray level, contrast, uniformity, resolution, saturation, white balance, and/or spectral sensitivity, among other image properties, of holographic images displayed by display400. Controller410can monitor the properties of the holographic image that is displayed by display400and change the signals sent to the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3to change and/or improve the properties of the holographic image displayed by display400. For example, controller410can change the brightness of the images based on the environment where the image is being displayed. Also, controller410can change signals sent to the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3to improve image quality. Controller410can also receive user input to change the signals sent to the first array of LEDs404-1, second array of LEDs404-2, and third array of LEDs404-3.

FIGS.5A-5Cillustrate packing schemes of a stacked light emitting diode (LED) display in accordance with a number of embodiments of the present disclosure.FIGS.5A-5Cillustrates packing schemes of 4 pixels, pixel540-1, pixel540-2, pixel540-3, and pixel540-4. Pixels540-1,540-2,540-3, and540-4can include LEDs from a row of arrays of LEDs, such as a first row of arrays204-1,204-2, and204-3ofFIG.2or a first row of arrays of304-2,304-2, and304-3ofFIG.3, for example.FIGS.5A-5Cillustrate a top down view of pixels540-1,540-2,540-3, and540-4, such the pixels comprising the LEDs from arrays of LEDs are stacked on each other.

FIG.5Aincludes a packing scheme where the LEDs of pixels540-1,540-2,540-3, and540-4are not offset and completely overlap. InFIG.5A, pixel540-1includes LED505-1-3from a third array of LEDs and an LED from a second array (not shown due to the packing scheme not including an offset) and an LED from a first array (not shown due to the packing scheme not including an offset). Pixel540-2includes LED505-2-3from a third array of LEDs and an LED from a second array (not shown due to the packing scheme not including an offset) and an LED from a first array (not shown due to the packing scheme not including an offset). Pixel540-3includes LED505-3-3from a third array of LEDs and an LED from a second array (not shown due to the packing scheme not including an offset) and an LED from a first array (not shown due to the packing scheme not including an offset). Pixel540-4includes LED505-4-3from a third array of LEDs and an LED from a second array (not shown due to the packing scheme not including an offset) and an LED from a first array (not shown due to the packing scheme not including an offset). In a number of embodiments, a controller can send signals to actuators (e.g., actuators222and224inFIG.2and322and324inFIG.3) to move arrays and/or LEDs such that the pixels have a packing scheme that is aligned and there is no offset of the LEDs in the first or second direction (e.g., x or y direction).

FIG.5Bincludes a packing scheme were the LEDs of pixels540-1,540-2,540-3, and540-4are offset and partially overlap. InFIG.5B, pixel540-1includes LED505-1-1from a first array of LEDs, LED505-1-2from a second array of LEDs that is offset in the first direction (e.g., x direction) and second direction (e.g., y direction) relative to LED505-1-1, and LED505-1-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-1-1, such that LEDs505-1-1,505-1-2, and505-1-3partially overlap each other. Pixel540-2includes LED505-2-1from a first array of LEDs, LED505-2-2from a second array of LEDs that is offset in the first direction and second direction relative to LED505-2-1, and LED505-2-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-2-1, such that LEDs505-2-1,505-2-2, and505-2-3partially overlap each other. Pixel540-3includes LED505-3-1from a first array of LEDs, LED505-3-2from a second array of LEDs that is offset in the first direction and second direction relative to LED505-3-1, and LED505-3-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-3-1, such that LEDs505-3-1,505-3-2, and505-3-3partially overlap each other. Pixel540-4includes LED505-4-1from a first array of LEDs, LED505-4-2from a second array of LEDs that is offset in the first direction and second direction relative to LED505-4-1, and LED505-4-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-4-1, such that LEDs505-4-1,505-4-2, and505-4-3partially overlap each other. In a number of embodiments, a controller can send signals to actuators (e.g., actuators222and224inFIG.2and322and324inFIG.3) to move arrays and/or LEDs such that the pixels have a packing scheme where there is offset of the LEDs in the x and/or y direction such that the LEDs partially overlap.

FIG.5Cincludes a packing scheme were the LEDs of pixels540-1,540-2,540-3, and540-4are offset and do not overlap. InFIG.5B, pixel540-1includes LED505-1-1from a first array of LEDs, LED505-1-2from a second array of LEDs that is offset in the first direction (e.g., x direction) and second direction (e.g., y direction) relative to LED505-1-1, and LED505-1-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-1-1, such that LEDs505-1-1,505-1-2, and505-1-3do not overlap each other. Pixel540-2includes LED505-2-1from a first array of LEDs, LED505-2-2from a second array of LEDs that is offset in the first direction and second direction relative to LED505-2-1, and LED505-2-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-2-1, such that LEDs505-2-1,505-2-2, and505-2-3partially overlap each other. Pixel540-3includes LED505-3-1from a first array of LEDs, LED505-3-2from a second array of LEDs that is offset in the first direction and second direction relative to LED505-3-1, and LED505-3-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-3-1, such that LEDs505-3-1,505-3-2, and505-3-3do not overlap each other. Pixel540-4includes LED505-4-1from a first array of LEDs, LED505-4-2from a second array of LEDs that is offset in the first direction and second direction relative to LED505-4-1, and LED505-4-3from a third array of LEDs that is offset in the first direction and second direction relative to LED505-4-1, such that LEDs505-4-1,505-4-2, and505-4-3do not overlap each other. In a number of embodiments, a controller can send signals to actuators (e.g., actuators222and224inFIG.2and322and324inFIG.3) to move arrays and/or LEDs such that the pixels have a packing scheme where there is offset of the LEDs in the first and/or second direction such that the LEDs do not overlap.

FIG.6is flow diagram representing an example method for operating a stacked light emitting diode (LED) hologram display in accordance with a number of embodiments of the present disclosure. At step650, the method can include adjusting a position of a first array of light emitting diodes (LEDs) in a first direction and a second direction orthogonal to the first direction, the adjusting relative to an origin point of the first array, wherein the first array of LEDs are configured to emit red light in a red green blue (RGB) hologram display.

At step652, the method can include displaying a first portion of a holographic image by a first meta-optics panel from light emitted by the first array.

At step654, the method can include adjusting a position of a second array of LEDs in the first direction and the second direction relative to an origin point of the second array, wherein the second array of LEDs are configured to emit green light in the RGB display.

At step656, the method can include displaying a second portion of the holographic image by a second meta-optics panel from light emitted by the second array.

At step658, the method can include adjusting a position of a second array of LEDs in the first direction and the second direction relative to an origin point of the third array, wherein the third array of LEDs are configured to emit blue light in the RGB display.

At step660, the method can include displaying a third portion of the holographic image by a third meta-optics panel from light emitted by the third array, wherein the first, second, and third arrays are stacked on each other.

The method can also include adjusting the position of the first array of LEDs in the first direction and the second direction offsets the first array of LEDs relative to the second and third array of LEDs, adjusting the position of the second array of LEDs in the first direction and the second direction offsets the second array of LEDs relative to the first and third array of LEDs, and adjusting the position of the third array of LEDs in the first direction and the second direction offsets the third array of LEDs relative to the first and second array of LEDs.

The method can include providing signals to the first array of LEDs, the second array of LEDs, and the third array of LEDs to change an illumination intensity of the LEDs and providing signals to the first array of LEDs, the second array of LEDs, and the third array of LEDs to deactivate at least a portion of one of the first array of LEDs, the second array of LEDs, and the third array of LEDs.

Although specific embodiments have been illustrated and described herein, those of ordinary skill in the art will appreciate that an arrangement calculated to achieve the same results can be substituted for the specific embodiments shown. This disclosure is intended to cover adaptations or variations of one or more embodiments of the present disclosure. It is to be understood that the above description has been made in an illustrative fashion, and not a restrictive one. Combination of the above embodiments, and other embodiments not specifically described herein will be apparent to those of skill in the art upon reviewing the above description. The scope of the one or more embodiments of the present disclosure includes other applications in which the above structures and processes are used. Therefore, the scope of one or more embodiments of the present disclosure should be determined with reference to the appended claims, along with the full range of equivalents to which such claims are entitled.

In the foregoing Detailed Description, some features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the disclosed embodiments of the present disclosure have to use more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separate embodiment.