The present disclosure provides a manufacturing method and a processing device for a display substrate. The display substrate includes a light emitting device. The manufacturing method includes: applying an electrical signal to the display substrate to generate aging current flowing through the light emitting device; and applying a magnetic field to the display substrate for at least part of a time, during which the electrical signal is applied to the display substrate. The magnetic field is used to increase the aging current.

A display device includes a substrate including a display area and a test area adjacent to the display area, a lower electrode disposed in the display area on the substrate, a common layer disposed on the lower electrode, an upper electrode disposed on the common layer; and a test element group. The test element group includes a plurality of electrode patterns disposed in a same layer as the lower electrode and in the test area on the substrate, a test common layer disposed in a same layer as the common layer and on the electrode patterns, where a plurality of openings is defined through the test common layer to expose a part of each of the electrode patterns, and an electrode layer disposed in a same layer as the upper electrode, on the test common layer, and in contact with the electrode patterns through the openings.

A display device includes a display area and a non-display area adjacent to the display area; a first scan line that extends in a row direction and transmits a first scan signal; a first pixel part electrically connected to the first scan line; a second pixel part electrically connected to the first scan line and spaced apart from the first pixel part in the row direction; and a first inspection pad disposed between the first pixel part and the second pixel part and electrically connected to the first scan line.

A display device includes a substrate in which a first area, a second area and a bending area between the first and second areas are defined, a plurality of pixels disposed above the substrate in the first area, a plurality of conductive layers extending to and intersecting the bending area, a protective film covering the conductive layers and disposed in the bending area, a first portion of the first area adjacent to the bending area, and a second portion of the second area adjacent to the bending area. The display device further includes a plurality of tag layers disposed in the first and second portions and connected to both ends of the conductive layers, wherein the bending area is interposed between the plurality of tag layers. The tag layers are exposed to an outside of the display device by exposure holes defined in the protective film.

An electronic panel includes a base substrate having a first area, a second area adjacent to the first area, and a third area adjacent to the second area, a plurality of pixels in the second area, a plurality of pixel signal lines in the third area and connected to the pixels, a crack detecting pattern spaced apart from the pixels and in the first area, a first line spaced apart from the pixel signal lines, in the third area, and connected to a portion of the crack detecting pattern, and a second line spaced apart from the pixel signal lines, in the third area, connected to another portion of the crack detecting pattern, and spaced apart from the first line. The crack detecting pattern has a line-symmetrical shape with respect to a symmetry axis passing through a center of the first area.

An electronic panel includes a base substrate having a first area, a second area adjacent to the first area, and a third area adjacent to the second area, a plurality of pixels in the second area, a plurality of pixel signal lines in the third area and connected to the pixels, a crack detecting pattern spaced apart from the pixels and in the first area, a first line spaced apart from the pixel signal lines, in the third area, and connected to a portion of the crack detecting pattern, and a second line spaced apart from the pixel signal lines, in the third area, connected to another portion of the crack detecting pattern, and spaced apart from the first line. The crack detecting pattern has a line-symmetrical shape with respect to a symmetry axis passing through a center of the first area.

A display device includes a display panel including an opening and a plurality of pixels that display an image, a crack detection line disposed along a periphery of the opening, and a plurality of data lines connected to the plurality of pixels. The crack detection line is connected to one of the plurality of data lines, and detects a crack at the periphery of the opening through a single pixel array connected to the one of the plurality of data lines.

An apparatus for determining a characteristic of a photoluminescent (PL) layer comprises: a light source that generates an excitation light that includes light from the visible or near-visible spectrum; an optical assembly configured to direct the excitation light onto a PL layer; a detector that is configured to receive a PL emission generated by the PL layer in response to the excitation light interacting with the PL layer and generate a signal based on the PL emission; and a computing device coupled to the detector and configured to receive the signal from the detector and determine a characteristic of the PL layer based on the signal.

A display device includes a display area, a test pad, a plurality of first test transistors, and at least one outline. The display area includes pixels coupled to data lines and scan lines. The test pad receives a test signal. The first test transistors are coupled between the data lines of the display area and the test pad. The at least one outline is coupled between one of the first test transistors and the test pad. The at least one outline is located in a non-display area outside the display area.

A display device includes a display module and a window member disposed on the display module, where the window member includes a base layer and a hard coating layer disposed on the base layer. A moisture absorption ratio of the window member is about 2.2% or greater under a first condition including a first temperature and a first humidity. The first temperature is about 60° C. or greater, and the first humidity is about 70% or greater.