An optical array arranged in a pedestal configured to deposit material on a substrate includes a plurality of optical elements, a window, and an array of pinholes. The optical elements are arranged on a printed circuit board (PCB). The optical elements are configured to emit light. The window comprises an optically transparent material covering the optical elements arranged on the PCB. The array of pinholes is disposed between the optical elements and the window. The pinholes are vertically aligned with the optical elements to direct the light emitted by the optical elements through the window to heat the substrate.

A light emitting diode (LED) device comprises a plurality of pixels on a backplane, each pixel comprising: semiconductor layers, which include an N-type layer, an active region, and a P-type layer; a cathode electrically contacting the N-type layer; an anode comprising anode segments electrically contacting respective portions of the P-type layer; one or more dielectric materials insulating: the active region and the P-type layer from the cathode, the anode segments from each other, and the anode segments from the cathode; and a plurality of interconnects, each respective interconnect affixing a respective anode segment to the backplane. Methods of making and use the devices are also provided.

A touch display device is provided, including a circuit board, a backlight module, a plurality of light-emitting elements, a plurality of piezoelectric elements, and a panel. The circuit board has a first surface and a second surface. The circuit board is provided with a first control unit, a first driver group, a second control unit, and a second driver group. The backlight module is disposed on the first surface of the circuit board. The plurality of light-emitting elements are disposed on the first surface of a circuit board. The panel is stacked on the backlight module. The first control unit is adapted to control the first driver group to drive at least one of the plurality of piezoelectric elements to vibrate, and the second control unit is adapted to control the second driver group to drive at least one of the plurality of light-emitting elements to emit light.

An electronic device includes a light-emitting element layer including a (1-1)-th typical light-emitting element and a (2-1)-th typical light-emitting element, a reflection preventing layer disposed on the light-emitting element layer, and including a light-shielding layer, in which a plurality of openings respectively corresponding to a (1-1)-th light-emitting area defined in the (1-1)-th typical light-emitting element, and a (2-1)-th light-emitting area defined in the (2-1)-th typical light-emitting element is defined, a light-shielding pattern disposed on the reflection preventing layer, and surrounding the (2-1)-th light-emitting area in a plan view, and a color filter pattern overlapping the light-shielding pattern, and surrounding the (2-1)-th light-emitting area in the plan view.

The display apparatus includes: a substrate, a first subpixel electrode and a second subpixel electrode that are spaced apart from each other on the substrate, a pixel definition layer disposed on the first subpixel electrode and the second subpixel electrode and defining a first opening overlapping the first subpixel electrode and a second opening overlapping the second subpixel electrode, and a first barrier located on the pixel definition layer between the first opening and the second opening, wherein the first barrier extends in a first direction, and a length of the first barrier in the first direction is greater than each of a length of the first opening in the first direction and a length of the second opening in the first direction, and an angle formed between one lateral surface of the first barrier and a top surface of the pixel definition layer is less than 90 degrees.

A display device includes a first alignment electrode and a second alignment electrode spaced apart from each other and disposed on a substrate, light emitting elements disposed between the first alignment electrode and the second alignment electrode, and an amorphous silicon layer disposed on the light emitting elements. The amorphous silicon layer includes an electrode portion disposed on a first end portion and a second end portion of each of the light emitting elements, and an insulating portion.

A light-emitting component includes a connection board with a mounting side. The light-emitting component also includes a light source. The light source is fastened and electrically connected to the connection board on the mounting side. The light-emitting component further includes a cover which covers the connection board in places on its mounting side and laterally surrounds the light source. The light-emitting component additionally includes an optical element. The optical element has a central region which is arranged downstream of the light source on the mounting side of the connection board. A provision is made to prevent impingement of light in the central region of the optical element.

A self-monitoring system for a micro-LED display panel can track a health status of the micro-LED emitters over the life cycle of the display. The self-monitoring system can include, for example, light sensors and a coverglass treated with an anti-reflective coating that directs light emitted by the micro-LED array toward the light sensors. Light captured by the light sensors can then be analyzed to determine the current value of light attributes such as color, polarization, and intensity, and to compare the current values of the light attributes with their previous values to monitor changes over time.

The backlight unit according to an embodiment comprises: a base substrate including circuit wiring; a plurality of light-emitting diodes disposed to form an array on the base substrate; a diffusion layer located laterally around the individual light-emitting diodes; and correcting lenses located on top of the respective light-emitting diodes, and can provide uniform white light in all directions through uniform light distribution by reducing color difference for different viewing angles that occurs due to the structure of a semiconductor light-emitting diode.

A display device includes a lower substrate, a bonding electrode disposed on the lower substrate, and a light emitting element disposed on the bonding electrode. The bonding electrode includes a first bonding metal layer and a second bonding metal layer sequentially disposed on the lower substrate, each including a bonding metal, a third bonding metal layer disposed between the first bonding metal layer and the second bonding metal layer, and including the bonding metal, a first thin film layer disposed between the first bonding metal layer and the third bonding metal layer, and a second thin film layer disposed between the second bonding metal layer and the third bonding metal layer, and the first thin film layer and the second thin film layer include a material with an atomic volume that is greater than or equal to about 80% of an atomic volume of the bonding metal.