A display device includes a display panel, a flexible printed circuit board having a connection to the display panel by using a film material, a control board having a connection to the flexible printed circuit board by using the film material, and a semiconductor integrated circuit fixed on the display panel by using the film material and functioning as a drive circuit of the display panel. The semiconductor integrated circuit includes an inspection terminal, and the display panel, the flexible printed circuit board, and the control board are provided with an inspection wiring line having one end connected to the inspection terminal and the other end to which a power supply voltage is applied on the control board. The semiconductor integrated circuit includes a built-in resistor and a switching element provided in series between the inspection terminal and a ground, and an abnormality detection circuit that detects an abnormality in a resistance of the connections using the film material based on an output voltage of a resistance dividing circuit constituted by a resistance of the inspection wiring line and the built-in resistor.

A display apparatus includes thin-film transistors respectively provided for pixels arranged in a matrix form, one or more driving circuits provided at a side of one end of the display panel, a plurality of signal lines to each connect more than one of the plurality of thin-film transistors arranged in one line in the matrix form to the driving circuit, a plurality of spare lines formed to be connectable to any of the plurality of signal lines in an outer area of a display panel, and arranged separated from one another in an opposing region in the outer area, the opposing region being opposed to the driving circuits across the display area, and a metal pattern overlapping a first spare line and a second spare line with an insulating layer therebetween, so as to be connectable to the first spare line arranged in a first region and the second spare line arranged in a second region.

A thin film transistor substrate of reduced repaired line length and capacitance includes first repairing lines, data lines and second repairing lines insulated from each other. If one of the data lines is broken, the first repairing lines is electrically coupled to the input end of the broken data line, the second repairing line is electrically coupled to the output end of the broken data line, and the first repairing is electrically coupled to the second repairing line.

An array substrate, a repair method of the array substrate, a display panel and a display device are provided. The array substrate includes a base substrate, and a common electrode layer, a common electrode line mesh, a first metal layer and a second metal layer which are on the base substrate, and the common electrode line mesh is electrically connected with the common electrode layer. The first metal layer includes a first signal line extending along a first direction; the second metal layer includes a second signal line extending along a second direction and a plurality of repair connection portions; and each repair connection portion has a first overlap portion overlapping the first signal line and a second overlap portion overlapping the common electrode line mesh.

The present invention provides a liquid crystal display device for which laser repair can be easily performed to correct a defect pixel, and/or a liquid crystal display device capable of reducing generation of contact failure and a short circuit. The liquid crystal display device of the present invention includes a first substrate, a liquid crystal layer, and a second substrate in the given order. The first substrate includes: an insulating substrate; a scanning line; a data line; a first insulating film disposed between the scanning line and the data line; a common line extending in an extension direction of the scanning line or the data line; a counter electrode facing the common line with the first insulating film in between; a switching element being connected to the scanning line and the data line; a second insulating film; a pixel electrode being connected to the switching element and the counter electrode; a third insulating film; and a common electrode being provided with an opening. The switching element, the second insulating film, the pixel electrode, the third insulating film, and the common electrode are disposed in the given order toward the liquid crystal layer.

A thin film transistor substrate of reduced repaired line length and capacitance includes first repairing lines, data lines and second repairing lines insulated from each other. When one of the data lines is broken, the first repairing lines is electrically coupled to the input end of the broken data line, the second repairing line is electrically coupled to the output end of the broken data line, and the first repairing is electrically coupled to the second repairing line.

An array substrate includes gate lines made of a first metal film, source lines made of a second metal film disposed such that a gate insulating film is interposed between the second metal film and the first metal film, the source lines extending to intersect the gate lines, auxiliary lines made of the first metal film, the auxiliary lines being arranged such that a pair of auxiliary lines sandwich the gate line therebetween and extending in parallel with the source lines to at least partly overlap the source lines, respectively, and bridge lines made of a third metal film disposed such that a first inter-layer film located opposite to the gate insulating film is interposed between the third metal film and the second metal film, the bridge lines being arranged to lie astride the gate lines, respectively, to electrically connect the source lines to pairs of the auxiliary lines.

Disclosed are a display panel and a repair method for the display panel, the display panel includes an array substrate, a display area, a line arrangement area, a frame sealant surrounding the display area and located in the line arrangement area, a data line, a scan line, a signal line assembly including a first signal line group and a second signal line group, the first signal line group crossing the frame sealant and disposed on one end of the data line, the second signal line group disposed on the side of the frame sealant close to the display area, and a repair line group, disposed on the side of the frame sealant away from the display area, two ends of the repair line group being electrically connected to the first signal line group and the second signal line group respectively.

The present disclosure provides an array substrate and a method for repairing the same, and a display panel. The array substrate includes gate lines extending in a first direction, and data lines and common electrode lines extending in a second direction. The gate lines intersect with the common electrode lines and the data lines to define pixel units. Every two adjacent pixel units at two sides of a common electrode line constitute a pixel unit group. Common electrodes of two pixel units in a pixel unit group are each connected to a common electrode line therebetween. The array substrate further includes a repairing structure including a first repairing line, a second repairing line at two sides of a data line, respectively, and a middle line intersecting with the data line and connecting a first point of the first repairing line and a second point of the second repairing line.

The shorting bar includes a test signal wiring layer, an insulating layer, a signal lead layer, a protective layer and a bonding lead layer that are sequentially stacked. The test signal wiring layer is arranged with test signal lines, and the signal lead layer is arranged with signal leads. The test signal lines are made of a transparent conductive material, and a coverage region of the insulating layer and a coverage region of the protective layer are staggered from coverage regions of the test signal lines; or, the signal leads are made of the transparent conductive material, the coverage region of the protective layer is staggered from coverage regions of the signal leads; or, the protective layer is arranged with a plurality of first through holes, and the first through holes correspond to the signal leads in a one-to-one correspondence.