Embodiments of this application provide a light emitting diode (LED) display screen calibration method and a related apparatus. The method includes: calculating a point-by-point thermal compensation calibration coefficient based on a thermal compensation calibration coefficient and a point-by-point calibration coefficient of an LED display screen box; and calibrating the LED display screen box based on the point-by-point thermal compensation calibration coefficient.

A display device and a testing method for a display panel are provided. The testing method for the display panel includes the steps of: storing an image signal for controlling the display panel to display a default image in a driver chip of the display panel, providing a power signal and a clock signal to the display panel, and retrieving the image signal and testing the display panel according to a preset test condition.

Systems and methods for detecting anomalies in a plurality of showcases are provided. A system can obtain a corresponding table between each of the plurality of showcases and at least one corresponding sensor. The system obtains information for showcase clustering. The system can include a processor device that can determine at least one cluster of showcases based on the information for showcase clustering and the corresponding table between each of the plurality of showcases and the at least one corresponding sensor. The system can build at least one model for each of the at least one cluster of showcases and detect at least one anomaly based on data from the at least one cluster of showcases and the at least one model.

An electronic circuit triage device diagnoses functionality of various electronic circuits of an electronic device. The electronic circuit triage device detects whether an electronic circuit is functioning properly by measuring a magnetic field pattern associated with the electronic circuit and comparing the magnetic field pattern to an expected magnetic field pattern. A magnetic sensor array includes non-packaged magnetic sensors disposed on a substrate. The non-packaged magnetic sensors can include bare dice, in one embodiment. In another embodiment, the magnetic sensors are formed directly on the substrate, such as by printing conductive traces on the substrate. In another embodiment, a magnetic sensor array includes a magnetic field converter configured to launch received magnetic fields along an axis corresponding to a magnetic sensor maximum sensitivity.

A method of testing a display panel includes applying a test voltage to each of data lines; applying a gate signal to each of the gate lines; measuring a sensing voltage applied to end of the light emitting unit of each of the pixels by the pixel circuit in response to the gate signal and the test voltage; and determining whether the light emitting elements are validly connected in series within the light emitting unit of each of the pixels based on the sensing voltage.

An array substrate, a display panel, and a display device. The array substrate includes a substrate. The substrate has a display area and a non-display area adjacent to the display area, and the non-display area of the substrate has a first notch away from an end of the display area. A first edge of the first notch disposed near the display area of the substrate is provided with a binding area. The display device has a narrow border and a high screen ratio.

A display device includes a display panel having a plurality of pixels and a driving circuit. A plurality of driving lines electrically connects the driving circuit to the display panel and supplies driving signals from the driving circuit to the display panel. A switching unit connects each of the plurality of driving lines to a first end of an inspection line. An inspection circuit is connected to a second end of the inspection line. A line selection unit is configured to selectively connect one or more of the plurality of driving lines to the inspection circuit through the inspection line.

A Micro-Electro-Mechanical Systems (MEMS) device includes a substrate, an electronic circuit mounted on the substrate, a movable element mounted on the substrate whose movement is controlled by application of an operating voltage by the electronic circuit, a stopper mounted on the substrate that stops the movement of the movable element through mechanical contact of the stopper with the movable element, and an auto-inspection mechanism that applies a test voltage between the movable element and the stopper and determines whether or not a leak current is present. The auto-inspection mechanism is mounted, at least in part, on the substrate. The test voltage is lower than the operating voltage.

The present application discloses a display panel test circuit and a display panel test device, wherein the test device of the display panel test circuit controls a plurality of switching circuits to be turned on, and a signal generator controls the plurality of switching circuits to be turned off when a first metal layer and the second metal layer are short-circuited.

Provided is a display device including a display area and a non-display area. The display device comprises a first substrate including a plurality of signal lines which are disposed corresponding to the display area and a plurality of inspection pads which are electrically connected to each of the signal lines and disposed corresponding to the non-display area, a second substrate facing the first substrate and including a light blocking layer which is disposed corresponding to the non-display area, and an encapsulation layer disposed, corresponding to the non-display area, between the first substrate and the second substrate. Each of the inspection pads includes a plurality of opening portions defined spaced apart from each other and a metal pattern portion surrounding the opening portions.