X Display Company Technology Limited

A floating-point display includes pixels. Each pixel can have a pixel memory for storing a pixel value, a light emitter, and a pixel circuit operable to control the light emitter to emit light corresponding to the pixel value. Each pixel value comprises a floating-point value that can be a binary value with a mantissa of M bits and an exponent of E bits. The pixel circuit can output a pulse-width modulation signal of M+E bits to control the light emitter to emit light by sequentially outputting bits of the mantissa in correspondence to the periods of the pulse-width modulation signal shifted in response to the value of the exponent. Different values of the floating-point pixel value can be unique and monotonic, can comprise multiple linear functions, and can increase from zero.

An optical communication router includes a digital camera disposed to capture an image shown on a first display comprising display pixels, the display pixels encoding an image address in the image, second displays, each of the second displays comprising display pixels operable to display an image on the second display with the display pixels, and a circuit. the circuit can be operable to process the captured image and decode the image address, select at least one of the second displays responsive to the image address, and display the image on the selected second display. Second digital cameras can capture images shown on the second displays.

A hybrid display includes pixel clusters and a display controller operable to provide pixel values to the cluster controllers. Each pixel cluster incudes (i) pixels; (ii) a pixel memory for storing fewer than two pixel values for each of the pixels; and (iii) a cluster controller operable to (a) control the pixels to emit light corresponding to the pixel values, (b) receive pixel values, and (c) store the pixel values in the pixel memory. The pixel values are digital values and each of the cluster controllers is operable to receive pixel values from the display controller and store the pixel values in the pixel memory at the same time that the cluster controller controls the pixels to emit light corresponding to the pixel values.

A digital display includes an array of display pixels and a display controller operable to receive a sequence of images send pixel values from the images to the display pixels. Each of the display pixels includes a light emitter and a pixel circuit operable to receive and store pixel values from the display controller in a pixel memory and control the light emitter to emit light corresponding to the pixel values. Each image pixel value is a multi-bit pixel value comprising first bit(s) and second bit(s) and the display controller is operable to send the first bit(s) to the display pixels and then send the second bit(s) to the display pixels. The display pixels are operable to receive and store the first bit(s) in the pixel memory, display the stored pixel value, receive and store the second bit(s) in the pixel memory, and then display the stored pixel value.

A micro-device substrate structure includes a support substrate having a support-substrate surface, spatially separated indentations extending into the support substrate, and a micro-device comprising a micro-device body and micro-device posts. The micro-device posts extend from the micro-device body into the support substrate and each of the posts is disposed at least partly in a different indentation. A release layer can be disposed between the micro-device posts and the support substrate. When the release layer is etched, the micro-device can be completely disconnected from the source substrate, removed from the indentations and source substrate, and micro-transfer printed to a target substrate.

A pixel with a color-agnostic repair site includes a pixel controller, a first site for a first light emitter electrically connected to the pixel controller with a first wire, a second site for a second light emitter electrically connected to the pixel controller with a second wire different from the first wire, and a repair site for a repair light emitter. A repair wire can independently electrically connect the repair site to the pixel controller. A repair wire can electrically connect the repair site to the first wire or to the second wire with a jumper. The repair site can electrically connect to the first wire or to the second wire. A first repair wire can electrically connect the repair site to the first wire, a second repair wire can electrically connect the repair site to the second wire, and one of these wires can be cut.

A hybrid display includes pixel clusters and a display controller operable to provide pixel values to the cluster controllers. Each pixel cluster incudes (i) pixels; (ii) a pixel memory for storing fewer than two pixel values for each of the pixels; and (iii) a cluster controller operable to (a) control the pixels to emit light corresponding to the pixel values, (b) receive pixel values, and (c) store the pixel values in the pixel memory. The pixel values are digital values and each of the cluster controllers is operable to receive pixel values from the display controller and store the pixel values in the pixel memory at the same time that the cluster controller controls the pixels to emit light corresponding to the pixel values.

A display amplifier includes an amplifier substrate, an array of light detectors disposed on or over the amplifier substrate, an array of light emitters disposed on or over the amplifier substrate, and an amplifier circuit operable to capture an image using the array of light detectors and display the captured image using the array of light emitters. A scene display can be disposed to emit light to the light detectors at close range. The light emitters can be brighter than the scene display.

A multi-LED structure comprises a first LED and a separate second LED disposed on a common multi-LED native substrate. The LEDs each comprise a common first layer having a cantilever portion and a base portion and a common second layer having a light-emitting emission portion disposed only over the base portion. An LED electrode electrically connects the first LED to the second LED. The cantilever portion extends in a direction different from the base portion or a length of the cantilever portion is less than a distance between the emission portions of the first and second LEDs.

An example of a pixel module comprises a module substrate having light emitters disposed on a light-emitter surface and a controller disposed on a controller surface opposed to the light-emitter surface. At least one module electrode is electrically connected to the controller and at least one module electrode is electrically connected to each light emitter. An example of a pixel-module wafer comprises a module source wafer comprising sacrificial portions and module anchors, each sacrificial portion laterally separated from an adjacent sacrificial portion by a module anchor and a pixel module disposed entirely over each sacrificial portion. At least one module tether physically connects each of the pixel modules to at least one of the module anchors. An example of a pixel-module display comprises a display substrate, pixel modules disposed on the display substrate and display electrodes disposed on the display substrate, each display electrode electrically connected to a module electrode.