Abstract:
A compliant monopolar micro device transfer head array and method of forming a compliant monopolar micro device transfer array from an SOI substrate are described. In an embodiment, the micro device transfer head array including 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, and each silicon electrode is deflectable into a cavity between the base substrate and the silicon electrode. A dielectric layer covers a top surface of each mesa structure.
Abstract:
A monopolar and bipolar micro device transfer head array and method of forming a monopolar and bipolar micro device transfer array are described. In an embodiment, a micro device transfer head array includes a base substrate, a first insulating layer formed over the base substrate, and an array of mesa structures. A second insulating layer may be formed over the mesa structure, a patterned metal layer over the second insulating layer, and a dielectric layer covering the metal layer.
Abstract:
A compliant bipolar micro device transfer head array and method of forming a compliant bipolar micro device transfer array from an SOI substrate are described. In an embodiment, a compliant bipolar micro device transfer head array includes a base substrate and a patterned silicon layer over the base substrate. The patterned silicon layer may include first and second silicon interconnects, and first and second arrays of silicon electrodes electrically connected with the first and second silicon interconnects and deflectable into one or more cavities between the base substrate and the silicon electrodes.
Abstract:
A micro light emitting diode (LED) and a method of forming an array of micro LEDs for transfer to a receiving substrate are described. The micro LED structure may include a micro p-n diode and a metallization layer, with the metallization layer between the micro p-n diode and a bonding layer. A conformal dielectric barrier layer may span sidewalls of the micro p-n diode. The micro LED structure and micro LED array may be picked up and transferred to a receiving substrate.
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 stabilization structure includes a stabilization layer on a carrier substrate. The stabilization layer includes an array of staging cavities. An array of micro devices are within the array of staging cavities. Each micro device is laterally attached to a shear release post laterally extending from a sidewall of a staging cavity. A pressure is applied to the array of micro devices from the array of transfer heads to shear the array of micro devices off the shear release posts. The sheared off micro devices are picked up from the carrier substrate using the array of transfer heads.
Abstract:
Exemplary methods and systems use a micro light emitting diode (LED) in an active matrix display to emit and sense light. Display panels, systems, and methods of operation are described in which LEDs may be used for both emission and sensing.
Abstract:
Systems and methods for transferring a micro device from a carrier substrate are disclosed. In an embodiment, a mass transfer tool includes an articulating transfer head assembly, a carrier substrate holder, and an actuator assembly to adjust a spatial relationship between the articulating transfer head assembly and the carrier substrate holder. The articulating transfer head assembly may include an electrostatic voltage source connection and a substrate supporting an array of electrostatic transfer heads.
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 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.