Abstract: A system and method for providing an active array of temperature sensing and cooling elements, including an active heatsink which further includes an active temperature sensing layer, a thermoelectric cooling layer, and a heatsink, which further includes a plurality of cooling channels. The temperature sensing element within the active temperature sensing layer includes a plurality of switching transistors, a linear transistor, a current sense resistor, a thermistor, a voltage sensing bus, a voltage setting bus, a current measurement bus, a measurement switching bus, a sense control bus, a storage capacitor, and a supply voltage, all under the control of a process control computer. The method of using an active array of temperature sensing and cooling elements includes the steps of aligning the shadow mask, depositing the material, detecting a thermal gradient, and controlling the thermoelectric cooling.

Abstract: A brightness calibration system for and method of setting brightness uniformity in a video display, such as an active-matrix organic light-emitting diode (OLED) flat-panel display. The brightness calibration system of the present invention includes an OLED display assembly that further includes a display control circuit, an active-matrix display, a DC power supply; and a measurement circuit. In a measurement mode, the brightness calibration system and method of the present invention subjects a video display to a brightness calibration operation that alternately measures the output light intensity of every pixel for a given input voltage and saves the measured light intensity in memory. In a display mode, the brightness calibration system and method of the present invention applies a corrective voltage to each pixel, in real time, so that each pixel has substantially the same output light intensity as its neighboring pixel.

Abstract: The present invention is a substrate holder system for and method of providing a substrate-to-mask alignment mechanism, securing mechanism and temperature control mechanism. The substrate holder system is suitable for use in an automated shadow mask vacuum deposition process. The substrate holder system includes a system controller, and a substrate arranged between a magnetic chuck assembly and a mask holder assembly. The magnetic chuck assembly includes a magnetic chuck, a thermoelectric device, a plurality of thermal sensors and a plurality of light sources. The mask holder assembly includes a shadow mask, a mask holder, a motion control system and a plurality of cameras. The substrate holder system of the present invention provides close contact between the substrate and the shadow mask thereby avoiding the possibility of evaporant material entering into a gap therebetween.

Abstract: A brightness compensation system and method of providing brightness uniformity in an active-matrix organic light-emitting diode (OLED) flat-panel display. The brightness compensation system of the present invention includes a system controller, a timing generator, a test brightness generator, a pixel address generator, a video formatter, a first and second multiplexer, a memory device, a pixel adjust device, a level shifter and driver, a current sensor, an analog-to-digital converter, a DC power supply, and an active-matrix OLED display under test. The brightness compensation system and method of the present invention subjects an active-matrix OLED display to a testing operation that alternately tests every pixel, detects its output current, which is an indicator of light output level, for a given input voltage, saves the output current value in memory, then applies a corrective voltage to each pixel, so that each pixel has the same light output (output current) as its neighboring pixel.

Abstract: A system and method for active array temperature sensing and cooling. The system includes an active temperature sensing layer, a thermoelectric cooling layer and a heatsink layer. The temperature sensing layer is formed of temperature sensing elements that sense the temperature gradient across an unevenly heated region of the active array substrate. The thermoelectric cooling layer controls the temperature gradient sensed by the temperature sensing layer. The heatsink layer includes a plurality of cooling channels for absorbing thermal energy from the unevenly heated region. The system is under the control of a process control computer.

Abstract: A scalable tiled display assembly that includes an array of independently addressed active-matrix organic light-emitting diode (OLED) display tiles cabled to a central control module. Each display tile includes a frame, a driver sub-module, and a flat ribbon cable for connecting the driver sub-module to the display tile. Furthermore, column and row drivers are integrated within each display tile for improved performance and minimal external connections. The invention further includes a method of forming a scalable tiled display system that includes the steps of assembling a plurality of display tile assemblies, determining the viewable area of the display, assembling an array of display tile assemblies according to the desired viewable area, and activating the scalable tiled display system.

Abstract: A vapor deposition shadow mask system includes a number of series connected vacuum vessels each having a material deposition source and shadow mask positioned therein. A substrate is translated along a path that has a longitudinal axis that extends through the vacuum vessels. Centers of shadow masks in first and second vacuum vessels are offset laterally on opposite sides of the longitudinal axis. The system is operative for deposition material on a second area of the substrate via the material deposition source and shadow mask in the second vacuum vessel in a manner that overlaps a portion of the material deposited on a first, adjacent area of the substrate via the material deposition source and shadow mask in the first vacuum vessel.