Abstract:
A light emitting assembly is described. In one embodiment, one or more light emitting diode (LED) devices and one or more microcontrollers are bonded to a same side of a substrate, with the one or more microcontrollers to switch and drive the one or more LED devices.
Abstract:
A flexible display panel and method of formation with a sacrificial release layer are described. The method of manufacturing a flexible display system includes forming a sacrificial layer on a carrier substrate. A flexible display substrate is formed on the sacrificial layer, with a plurality of release openings that extend through the flexible display substrate to the sacrificial layer. An array of LEDs and a plurality of microchips are transferred onto the flexible display substrate to form a flexible display panel. The sacrificial layer is selectively removed such that the flexible display panel attaches to the carrier substrate by a plurality of support posts. The flexible display panel is removed from the carrier substrate and is electrically coupled with display components to form a flexible display system.
Abstract:
A display panel and a method of forming a display panel are described. The display panel may include a thin film transistor substrate including a pixel area and a non-pixel area. The pixel area includes an array of bank openings and an array of bottom electrodes within the array of bank openings. An array of micro LED devices are bonded to the corresponding array of bottom electrodes within the array of bank openings. An array of top electrode layers are formed electrically connecting the array of micro LED devices to a ground line in the non-pixel area.
Abstract:
A compliant micro device transfer head and head array are disclosed. In an embodiment a micro device transfer head includes a spring portion that is deflectable into a space between a base substrate and the spring portion.
Abstract:
A micro device transfer head array and method of forming a micro device transfer array from an SOI substrate are described. In an embodiment, the micro device transfer head array includes a base substrate and a patterned silicon layer over the base substrate. The patterned silicon layer may include a silicon interconnect and an array of silicon electrodes electrically connected with the silicon interconnect. Each silicon electrode includes a mesa structure protruding above the silicon interconnect. A dielectric layer covers a top surface of each mesa structure.
Abstract:
A method and structure for stabilizing an array of micro devices is disclosed. A stabilization layer includes an array of stabilization cavities and array of stabilization posts. Each stabilization cavity includes sidewalls surrounding a stabilization post. The array of micro devices is on the array of stabilization posts. Each micro device in the array of micro devices includes a bottom surface that is wider than a corresponding stabilization post directly underneath the bottom surface.
Abstract:
A method and structure for forming an array of micro devices is disclosed. An array of micro devices is formed over an array of stabilization posts included in a stabilization layer. Patterned sacrificial spacers are formed between the stabilization posts and between the micro devices. The patterned sacrificial spacers are disposed upon the patterned sacrificial spacers.
Abstract:
Micro pick up arrays for transferring micro devices from a carrier substrate are disclosed. In an embodiment, a micro pick up array includes a compliant contact for delivering an operating voltage from a voltage source to an array of electrostatic transfer heads. In an embodiment, the compliant contact is moveable relative to a base substrate of the micro pick up array.
Abstract:
A method of transferring a micro device and an array of micro devices are disclosed. A carrier substrate carrying a micro device connected to a bonding layer is heated to a temperature below a liquidus temperature of the bonding layer, and a transfer head is heated to a temperature above the liquidus temperature of the bonding layer. Upon contacting the micro device with the transfer head, the heat from the transfer head transfers into the bonding layer to at least partially melt the bonding layer. A voltage applied to the transfer head creates a grip force which picks up the micro device from the carrier substrate.
Abstract:
Systems and methods for transferring a micro device from a carrier substrate are disclosed. In an embodiment, a micro pick up array mount includes a pivot platform to allow a micro pick up array to automatically align with a carrier substrate. Deflection of the pivot platform may be detected to control further movement of the micro pick up array.