Patent ID: 9318398
Filing Date: 2016-04-19
CPC Classification: G09G,H01L,H05K

Claim Text:
1. A display device, comprising: a display panel displaying an image; a printed circuit board driving the display panel; and a chip-on-film package electrically connecting the display panel and the printed circuit board, the chip-on-film package comprising: a base film including a bent area in which bending of the base film occurs; a test line disposed on the base film, at least a portion of the test line overlapping the bent area; and an integrated circuit chip disposed on the base film and including a first terminal connected to one end of the test line to output a first signal and a second terminal connected to the other end of the test line to receive a second signal, the integrated circuit chip determining whether an undesired crack has occurred in the bent area based on a difference in value of signal characteristics between the first signal and the second signal, wherein the integrated circuit chip provides a result signal indicating whether the undesired crack has occurred in the bent area of the printed circuit board, and the printed circuit board receives the result signal and controls a driving condition of the display panel in correspondence with the received result signal.