A liquid crystal display device according to FFS technology is provided, which sufficiently provides a common electrode with common electric potential and improves an aperture ratio of pixels. A pixel electrode is formed of a first layer transparent electrode. A common electrode made of a second layer transparent electrode is formed above the pixel electrode interposing an insulation film between them. The common electrode in an upper layer is provided with a plurality of slits. The common electrode extends over all the pixels in a display region. An end of the common electrode is disposed on a periphery of the display region and connected with a peripheral common electric potential line that provides a common electric potential Vcom. There is provided neither an auxiliary common electrode line nor a pad electrode, both of which are provided in a liquid crystal display device according to a conventional art.

According to one embodiment, a display device includes a gate line extending in a first direction, first and second source lines crossing the gate line and arranged in the first direction, a first light-shielding layer having first and second openings, and an oxide semiconductor layer crossing the gate line, and in the display device, the first opening and the second opening are arranged in a second direction crossing the first direction between the first source line and the second source line, the gate line is located between the first opening and the second opening, and the oxide semiconductor layer has a first overlapping portion overlapping the first opening.

According to one embodiment, a display device includes a switching element, a common electrode, an insulating film covering the common electrode, a first pixel electrode electrically connected to the switching element in a first contact hole penetrating the insulating film, and a transparent conductive film electrically connected to the common electrode in a second contact hole penetrating the insulating film. The first pixel electrode and the transparent conductive film are arranged in a first direction in a same layer. A size of the first contact hole and a size of the second contact hole are different from each other in planar view.

The present application provides a liquid crystal display (LCD) panel and an LCD device. In the LCD panel, a first metal layer and a second metal layer are connected to a metal connection layer through a first via hole and a second via hole, respectively. A difference between a depth of the first via hole and a depth of the second via hole is smaller than a sum of thicknesses of a gate insulating layer, an active layer, and the second metal layer. Accordingly, the depth of the first via hole is reduced, a length of the meal connection layer in the first via hole is shortened, and an impedance is lowered.

A display device is provided and includes first and second substrates; a liquid crystal layer filled between the first and second substrates; a counter electrode pattern formed on the first substrate; scanning lines extending in a first direction; signal lines; and a first pixel electrode pattern and a second pixel electrode pattern formed on the first substrate, wherein the first pixel electrode pattern and the second pixel electrode pattern are located in line symmetry with respect to a first scanning line of the scanning lines.

According to one embodiment, a display device includes first semiconductor layers crossing a first scanning line in a non-display area, the first semiconductor layers being a in number, second semiconductor layers crossing a second scanning line in the non-display area, the second semiconductor layers being b in number, and an insulating film disposed between the first and second semiconductor layers and the first and second scanning lines, wherein a and b are integers greater than or equal to 2, and a is different from b, and the first and second semiconductor layers are both entirely covered with the insulating film.

Disclosed is a display device and a method of manufacturing the display device. The display device includes a pixel electrode disposed in an opening area; a common electrode having at least one region that overlaps the pixel electrode in the opening area; a gate line extending along a row direction in a non-opening area that surrounds the opening area; a data line extending along the non-opening area in a column direction that is perpendicular to the row direction; and a touch sensing line extending in the column direction across the opening area, wherein the opening area may have a shape in which a length of the opening area in the row direction is longer than a length of the opening area in the column direction.

According to an aspect of the present disclosure, a liquid crystal display device includes a lower substrate including a black matrix and a color filter; an upper substrate disposed to be opposite to the lower substrate; a thin film transistor which on the upper substrate to be opposite to the color filter, and including a gate electrode, an active layer, a source electrode, and a drain electrode; at least one insulting layer disposed on the thin film transistor; a pixel electrode disposed on the insulating layer and electrically connected to the drain electrode; and a common electrode spaced apart from the pixel electrode, and the gate electrode includes a first gate conductive layer including a transparent conductive material, a second gate conductive layer including a first transition metal oxide and a second transition metal oxide, and a third gate conductive layer formed of an opaque conductive layer.

The present disclosure provides a COA substrate and a liquid crystal display panel, the COA substrate comprises a plurality of crisscrossed data lines and scan lines, and a pixel unit composed of the data lines and the scan lines. The pixel unit is divided into an opening region of the pixel unit and a non-opening region of the pixel unit. The data lines, the scan lines, transistor units, a data line black matrix less (DBS) common electrode line, and a pixel through-hole are electrically connected to the transistor unit, which are disposed in the non-opening region. The DBS common electrode line in the non-opening region of the pixel unit bypasses the pixel through-hole.

A liquid crystal display device according to FFS technology is provided, which sufficiently provides a common electrode with common electric potential and improves an aperture ratio of pixels. A pixel electrode is formed of a first layer transparent electrode. A common electrode made of a second layer transparent electrode is formed above the pixel electrode interposing an insulation film between them. The common electrode in an upper layer is provided with a plurality of slits. The common electrode extends over all the pixels in a display region. An end of the common electrode is disposed on a periphery of the display region and connected with a peripheral common electric potential line that provides a common electric potential Vcom. There is provided neither an auxiliary common electrode line nor a pad electrode, both of which are provided in a liquid crystal display device according to a conventional art.