Abstract: Embodiments of the disclosure relate to a printed circuit board and a display device and, more specifically, may include a display panel and a printed circuit board directly or indirectly connected to the display panel and including a plurality of layers. The printed circuit board may include a first substrate layer, a second substrate layer disposed on the first substrate layer and having a slit formed in at least a portion thereof, a signal line disposed on the second substrate layer, disposed in a direction forming a predetermined angle from a longitudinal direction of the slit, and passing over the slit so that at least a portion thereof overlaps the slit on the same vertical line, and an impedance matching element connected to the signal line.

Abstract: A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel on which a plurality of data lines and a plurality of gate lines cross each other and a plurality of liquid crystal cells are formed at crossings of the data lines and the gate lines, a DC-DC converter that produces a high potential power voltage required to drive the liquid crystal display panel and a gate low voltage required to generate a scan pulse for driving the gate lines, and a common voltage generating circuit that divides the high potential power voltage based on the gate low voltage to generate a common voltage to be applied to a common electrode of the liquid crystal cells.