A display panel and a display device are provided. The display panel includes a display region and a non-display region surrounding the display region. In the present invention, a monitoring portion is disposed in the non-display region of the display panel, and a plurality of light-emitting elements are disposed in a frame packaging region. By observing light-emitting conditions of the light emitting elements at different distances from the display region of the display panel, packaging effects of different packaging structures can be effectively detected.

The present application discloses embodiments of a display panel, a preparation method thereof, a detection method thereof, and a display device for improving an accuracy of detecting electrical properties of transistors. In one embodiment, a display panel may include a display area including a plurality of pixels and a non-display area surrounding the display area, wherein each of the plurality of pixels may include a display pixel circuit, and the non-display area may include one or more test pixel circuits, each of the one or more test pixel circuits having an equivalent circuit structure to the display pixel circuit, where the one or more test pixel circuits may include a plurality of transistors, and electrodes of at least one of the plurality of transistors may be respectively conductively coupled to different test pads.

A display apparatus including a substrate; a display area arranged on the substrate and including a plurality of pixels, and a peripheral area arranged outside the display area; a dam surrounding the display area; a crack detector arranged between the dam and an end of the substrate and electrically connected to at least one of the plurality of pixels; a crack prevention dam arranged between the dam and the end of the substrate; and an encapsulation layer including a first inorganic layer, an organic layer, and a second inorganic layer, each covering the display area and a portion of the peripheral area. The first inorganic layer and the second inorganic layer in the encapsulation layer extend to the end of the substrate.

An inspection apparatus includes: a plurality of support members that support a display panel at a predetermined height; a bending-pressing member that presses a pressing surface of the display panel; a sound wave sensor that senses a sound wave generated from the display panel during a bending inspection process, wherein during the bending inspection process, the bending-pressing member presses the pressing surface of the display panel; and an inspection controller that detects a crack in the display panel using the sound wave sensed by the sound wave sensor.

A property prediction system is provided. An input portion, a processing portion, an arithmetic portion, and an output portion are included; the input portion has a function of supplying the structure of a light-emitting device or the properties of the light-emitting device; the processing portion has a function of generating a learning data set or data that is used for property prediction and a function of quantifying the molecular structure of an organic compound; the arithmetic portion has a function of performing supervised learning on the basis of the learning data set and a function of making an inference of the properties of the light-emitting device from the data on the basis of the learning result of the supervised learning; and the output portion has a function of providing the result of the inference. Thus, the properties of the light-emitting device including a layer containing an organic compound are predicted.

A flexible display panel and a fabricating method thereof are provided. The fabricating method has: disposing an active layer and a gate of a switching tube of the flexible display panel sequentially on a substrate, wherein the switching tube is in the display area; disposing a source and a drain on the gate, wherein a signal connection line at same layer as the source and the drain is disposed in the non-display area; disposing a first insulating layer and a metal connection line sequentially on the source and the drain, wherein the first insulating layer and/or the metal connection line further extends into the non-display area and covers the signal connection line. This application increases thickness of film layers on the signal connection line, and also avoids phenomenon that the signal connection line is etched away due to over-etching upon etching the metal connection line, thereby causing disconnection phenomenon.

A display device includes a substrate includes a display area having a plurality of pixels, a pad area including a plurality of input pads, and a circuit area positioned between the pad area and the display area; a crack sensor having a first end and a second end, the first end being connected to a first input pad of the plurality of input pads; a first shorting element extending through the pad area, the first shorting element being connected to the second end and extending to an edge of the substrate; a plurality of data lines connected to the plurality of pixels; and a crack sensing circuit including a first switching element having an input terminal connected to the first end and an output terminal connected to a first data line of the plurality of data lines, and a second switching element having an input terminal connected to the second end and an output terminal connected to a second data line of the plurality of data lines.

A display panel, comprising a first insulating structural layer, a first crack detection line, a second insulating structural layer and a second crack detection line which are sequentially arranged on a substrate, wherein the first crack detection line and the second crack detection line are both located in a peripheral area and are arranged around a display area, one end of the first crack detection line is configured to receive a detection signal, and the other end of the first crack detection line is configured to output a first output signal, and one end of the second crack detection line is configured to receive a detection signal and the other end of the second crack detection line is configured to output a second output signal.

Provided are a display panel, a control method thereof, and a display device. The control method includes: acquiring a correspondence between temperature and voltage information of a first cathode of a first sub-pixel among a plurality of first sub-pixels, a correspondence between temperature and information about a voltage difference between an auxiliary electrode and the first cathode, and current temperature information of the display panel; and determining voltage adjustment information of the first cathode and the auxiliary electrode according to the current temperature information, the correspondence between temperature and the voltage information of the first cathode, and the correspondence between temperature and the information about the voltage difference between the auxiliary electrode and the first cathode so as to adjust the voltage difference between the first cathode and the auxiliary electrode so that a display color purity of the first sub-pixels meets a preset requirement.

An initial display substrate comprising a product region and a to-be-processed region on periphery of the product region, the to-be-processed region comprising to-be-processed rounded corner regions at corners of the initial display substrate, each corner comprising major corner sides whose extension directions intersect, at least one to-be-processed rounded corner region comprising first positioning sub-region and two second positioning sub-regions, the major corner sides respectively defining edges of the second positioning sub-regions, the first positioning sub-region being between the second positioning sub-regions; first shielding blocks in the first positioning sub-region, each having arc shape protruding towards direction away from the product region, and the first shielding blocks being arranged in parallel at intervals; and second shielding blocks in each second positioning sub-region, the second shielding blocks being arranged in periodic pattern different from pattern of shielding blocks in a region of the to-be-processed region other than the to-be-processed rounded corner regions.