Patent ID: 8717263
Filing Date: 2014-05-06
Classification: G06F,G09G

Abstract:
1. A method of setting drive voltages of a plurality of LCD units of an in-car display apparatus, comprising the steps of: pasting a label on a place on each particular LCD unit, the label on each particular LCD unit including an information code, which is information-coded from a data of the drive voltage to achieve the best contrast in optical characteristics of the particular LCD unit (pasting step), wherein the drive voltage is unique to the particular LCD unit and determined by using measured electronic characteristics of electronic components which are unique to the particular LCD unit; grouping a plurality of the particular LCD units into a plurality of groups based on the best contrast and a ratio of luminance of an OFF segment divided by luminance of backlight for optical characteristics of the respective particular LCD units (grouping step); selecting the plurality of the particular LCD units in the same group among the plurality of the groups (selecting step); mounting the particular LCD units selected to the in-car display apparatus (mounting step); reading the data of the drive voltage to achieve the best contrast from the information code included in the each label (reading step); and setting the drive voltage to achieve the best contrast based on the data read (setting step).