Abstract: Devices and techniques that include use of a capacitive sensor to permit an OVJP print head to orient itself relative to conductive or dielectric traces on a printing substrate are disclosed. Such a sensor enables real-time measurement and closed-loop control of print head position with respect to substrate traces. This enables, for example, micron scale resolution in a dimension transverse to printing while permitting both the substrate and movement of the OVJP tool to scale to larger sizes than are achievable using conventional techniques and systems.

Abstract: Aspects of the present disclosure provide an apparatus that heats a semiconductor structure while holding the semiconductor structure. For example, the apparatus can include a semiconductor structure holding device that is configured to hold the semiconductor structure. The apparatus can also include a light projection device that is configured to generate a certain pattern of light. The light projection device can be integrated with the semiconductor structure holding device such that when the semiconductor structure holding device is holding the semiconductor structure, the certain pattern of light generated by the light projection device is projected onto the semiconductor structure holding device and a corresponding certain pattern of heat is generated and transferred through the semiconductor structure holding device and applied to the semiconductor structure, in order to correct the shape and size of the semiconductor structure.

Abstract: Devices and techniques that include use of a capacitive sensor to permit an OVJP print head to orient itself relative to conductive or dielectric traces on a printing substrate are disclosed. Such a sensor enables real-time measurement and closed-loop control of print head position with respect to substrate traces. This enables, for example, micron scale resolution in a dimension transverse to printing while permitting both the substrate and movement of the OVJP tool to scale to larger sizes than are achievable using conventional techniques and systems.