Patent ID: 6960927

Claim:
A method of determining thresholding parameters for a test recipe that will optimize a liquid crystal display (LCD) manufacturing parameter, wherein the test recipe comprises pixel driving signals applied to electrode array panels by an array test stage, and the thresholding parameters are used by the array test stage to identify good and defective pixels in the electrode array panels based on pixel voltage distributions generated in response to the pixel driving signals, the method comprising: (a) evaluating the LCD manufacturing parameter using thresholding parameters with current values; (b) evaluating the LCD manufacturing parameter while scanning the value of a thresholding parameter from its current value and holding the values of other thresholding parameters, if any, at current values; (c) identifying a new value for the scanned thresholding parameter that results in an optimized LCD manufacturing parameter, based on step (b); and (d) repeating steps (a)-(c) until all thresholding parameters have been scanned from their current values.