Patent ID: 8144200

Claim:
A test apparatus of a liquid crystal display module, comprising: a scan box controller configured to provide a menu setting screen for setting a resolution and a drive frequency of a liquid crystal display module; a scanning converter configured to adjust and output a resolution and a drive frequency of an input image signal supplied to the liquid crystal display module according to a setting set by a user on the menu setting screen; and the liquid crystal display module configured to display an image signal of a resolution supplied from the scanning converter, wherein the scanning converter comprises: a microcomputer configured to output a control signal to adjust a power supplied to the liquid crystal display module or a resolution, a drive frequency, a spread spectrum of an image signal to be input according to a menu setting status set by the user on the menu setting screen; a frequency converter configured to set for output a drive frequency of the liquid crystal display module under a control of the microcomputer; a panel voltage controller configured to output a certain level of a panel voltage to the liquid crystal display module by using a certain level of voltage supplied from a power unit; a pulse width modulation signal controller configured to output a pulse width modulation signal of a corresponding duty ratio under a control of the microcomputer; and a master inverter and a slave inverter each configured to control an output voltage or current of a backlight so as to correspond to the pulse width modulation signal of a duty ratio adjusted by a user and thereby to provide a backlight of a corresponding brightness.