Patent ID: 7667734

Claim:
A liquid-crystal television set comprising: a video processor to which an analog data signal is inputted; a panel processor; an OSD circuit; a CPU; a timing controller that controls a drive unit provided on a liquid crystal panel; and a memory that is configured as either one of an EEPROM and a flash memory, and is externally mounted, the memory storing a test pattern datum that is configured as a font datum of 16 dots in width and 20 dots in height, and has display color invertedly highlighted every fifth dot in both the heightwise direction and the widthwise direction, for testing a position of any improper part including any one of bright point, dark point, bright line and dark line on a screen of the liquid crystal panel, wherein the video processor, the panel processor, the OSD circuit, the CPU, and the timing controller are implemented in a single IC-chip, and wherein the CPU acquires the test pattern datum from the memory and controls the OSD circuit to create a test pattern to be displayed at any desired position on the screen of the liquid crystal panel and to display address values of an origin of the position where the test pattern is displayed, when testing the liquid crystal panel.