Abstract: A device for detection of a display panel is provided in the embodiments of the disclosure, which is configured to detect signal lines on the display panel. The signal lines at least comprises a plurality of data lines which are divided into N groups; the device comprises: N shorting bars provided within an electrode lead region of the display panel to intersect the plurality of data lines, a plurality of welding pads provided on both sides of the electrode lead region, each of which shorting bars short-circuits one of the N groups of data lines together and connects with two welding pad at both ends thereof respectively, and a switch which is provided between each of the shorting bars and each of the corresponding welding pads connecting with the former on one and the same side of all the shorting bars; and N is a positive integer not less than.

Abstract: A device for detection of a display panel is provided in the embodiments of the disclosure, which is configured to detect signal lines on the display panel. The signal lines at least comprises a plurality of data lines which are divided into N groups; the device comprises: N shorting bars provided within an electrode lead region of the display panel to intersect the plurality of data lines, a plurality of welding pads provided on both sides of the electrode lead region, each of which shorting bars short-circuits one of the N groups of data lines together and connects with two welding pad at both ends thereof respectively, and a switch which is provided between each of the shorting bars and each of the corresponding welding pads connecting with the former on one and the same side of all the shorting bars; and N is a positive integer not less than.

Abstract: Embodiments of the present invention provide an array substrate and a method of producing the same, a display panel and a display device, solving problems of detaching of film formed by CVD in the array substrate in prior art. The array substrate includes a plurality of data lines and a plurality of gate lines that are disposed in cross orientation. The array substrate further includes: a conductive repairing structure located at a damaged region of the data line and/or a damaged region of the gate line; and an insulating protective film configured to cover a region where at least one conductive repairing structure is located. As the region where the at least one conductive repairing structure is located is covered by the insulating protective film, the conductive repairing structure covered by the insulating protective film is not prone to be detached off.