Patent ID: 6996446

Claim:
A method of determining the effect, on a liquid crystal display (LCD) manufacturing parameter, of changing from a current distribution function test recipe to a new distribution function test recipe in an LCD manufacturing setup, wherein the current and new distribution function test recipes comprise driving signals for electrode array panels that generate pixel voltage distributions, the method comprising: applying the current distribution function test recipe to individual electrode array panels in a first group of electrode array panels; classifying the individual electrode array panels in the first group of electrode array panels as good or defective based on pixel voltage distributions generated by the current distribution function test recipe to yield a primary defect result; applying the new distribution function test recipe to the individual electrode array panels in the first group of electrode array panels; classifying the individual electrode array panels in the first group of electrode array panels as good or defective based on pixel voltage distributions generated by the new distribution function test recipe to yield a new defect result; inspecting individual electrode array panels that are classified as defective in both the primary and new defect results to yield panel inspection results; and determining the effect on the LCD manufacturing parameter of changing from the current distribution function test recipe to the new distribution function test recipe based on the primary defect result, the new defect result and the panel inspection results.