Abstract: 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.

Abstract: Embodiments of the present disclosure provide a display substrate, a display panel, a display device, and a manufacturing method of the display substrate. The display substrate includes a display region and a peripheral region located at an outer side of the display region, and the peripheral region includes a bonding region. The display substrate includes: a base substrate, and a first metal pattern and a second metal pattern which are provided on the base substrate and located in the bonding region, the second metal pattern covers at least a portion of at least one side surface of the first metal pattern, and an activity of a metal of the second metal pattern is weaker than an activity of a metal of the first metal pattern.

Abstract: A skin detection and evaluation method includes: obtaining a face image of a user; detecting a skin problem that appears in the face image; prompting in a first interface, the user that the skin problem appears on a face, wherein the first interface comprises the face image; and displaying a second interface in response to a first operation performed by the user in the first interface, wherein the second interface comprises a first facial simulated image obtained after the skin problem is aged; or displaying a third interface in response to a second operation performed by the user in the first interface, wherein the third interface comprises a second facial simulated image obtained after the skin problem is de-aged.

Abstract: A bridge detecting vehicle with two foldable arms, including: a vehicle body, slewing mechanisms, horizontal and vertical arms and telescopic arms. One end of the two horizontal arms is respectively arranged on the slewing mechanisms, and the other end of the two horizontal arms is respectively connected to the two horizontal arms. A crossed arm is provided between the two horizontal arms. The two vertical arms are respectively connected to the two horizontal arms via ball joints. A detecting device is respectively provided at rear ends of the two telescopic arms.

Abstract: 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.

Abstract: A photographing method of an electronic device is provided. The electronic device includes a display screen. In some embodiments, display screen displays an icon of a first application. In those embodiments, display screen displays a user interface of the first application in response to an operation on the icon, where the user interface includes a photographing button. The display screen also displays a photographing preview interface of a second application in response to an operation on the photographing button, where the second application is a camera application, and the photographing preview interface is used to display an image collected by the camera. When ambient light meets a photographing condition, the electronic device automatically photographs the image collected by the camera.

Abstract: A face image detection method includes: recognizing facial features of a face image, and determining two pupil centers of the face image; connecting the two pupil centers, and determining a center point of a line segment whose endpoints are the two pupil centers; and selecting K columns of pixels from a local image region including the center point, calculating a gradient value of each pixel in each column of pixels, and generating K gradient vectors including gradient values of all columns of pixels, determining, based on a result of comparing the K gradient vectors with a specified threshold, whether glasses are worn on the face image.

Abstract: An OLED display substrate, a display panel, a display device, a manufacturing method and a fingerprint identification module are provided. The OLED display substrate includes a microporous light-shielding pattern arranged between adjacent pixel regions and including a plurality of pinholes. The microporous light-shielding pattern is arranged at a same layer as, and insulated from, a nontransparent electrode of the OLED display substrate.

Abstract: A dark circle detection and evaluation method includes: obtaining a to-be-processed image; extracting a dark circle region of interest from the to-be-processed image; performing color clustering on the dark circle region of interest to obtain n types of colors in the dark circle region of interest, where n is a positive integer; recognizing a dark circle region in the dark circle region of interest based on the n types of colors; and obtaining a dark circle evaluation result based on the dark circle region.

Abstract: Embodiments of the present disclosure provide a display substrate, a display panel, a display device, and a manufacturing method of the display substrate. The display substrate includes a display region and a peripheral region located at an outer side of the display region, and the peripheral region includes a bonding region. The display substrate includes: a base substrate, and a first metal pattern and a second metal pattern which are provided on the base substrate and located in the bonding region, the second metal pattern covers at least a portion of at least one side surface of the first metal pattern, and an activity of a metal of the second metal pattern is weaker than an activity of a metal of the first metal pattern.

Abstract: A wrinkle detection method includes: obtaining an original image, where the original image includes a face; adjusting a size of an ROI region on the original image to obtain at least two ROI images of different sizes, where the ROI region is a region in which a wrinkle on the face is located. A terminal device processes all the at least two ROI images of different sizes to obtain at least two binary images, where a white region in each binary image is a region in which a wrinkle is suspected to appear. The terminal device fuses the at least two binary images to obtain a final image, where a white region on the final image is recognized as a wrinkle.

Abstract: A face image detection method includes: recognizing facial features of a face image, and determining two pupil centers of the face image; connecting the two pupil centers, and determining a center point of a line segment whose endpoints are the two pupil centers; and selecting K columns of pixels from a local image region including the center point, calculating a gradient value of each pixel in each column of pixels, and generating K gradient vectors including gradient values of all columns of pixels, determining, based on a result of comparing the K gradient vectors with a specified threshold, whether glasses are worn on the face image.

Abstract: A laser processing device and a laser processing method are provided. The laser processing device includes: at least two lasers each configured to generate a laser beam; focusing members corresponding to the at least two lasers respectively and configured to adjust focus positions of at least two laser beams generated by the at least two lasers; and a beam combination member configured to receive the at least two laser beams whose focus positions have been adjusted, and output the at least two laser beams coaxially.

Abstract: A wrinkle detection method includes: rotating a region, in a face image, in which a wrinkle needs to be detected, to obtain a plurality of to-be-detected images; determining wrinkle points from all pixel points based on grayscale values of the pixel points in each of the to-be-detected images with different angles; determining at least one wrinkle line based on the wrinkle points; and then displaying, by the electronic device, the wrinkle line in the region in which the wrinkle needs to be detected, where each wrinkle line indicates one wrinkle in each of the to-be-detected images.

Abstract: A skin detection method includes: dividing a region of interest in a face image into a highlighted region and a non-highlighted region; separately determining a first segmentation threshold of the highlighted region and a second segmentation threshold of the non-highlighted region; obtaining a binary image of the highlighted region based on the first segmentation threshold, and obtaining a binary image of the non-highlighted region based on the second segmentation threshold; fusing the binary image of the highlighted region and the binary image of the non-highlighted region; and identifying, based on a fused image, pores and/or blackheads included in the region of interest.

Abstract: Embodiments of the present disclosure provide a thin film transistor, a method for manufacturing a thin film transistor, an array substrate, a display panel, and a display device. The thin film transistor includes: a base substrate; an active layer, an insulating layer, and a source-drain layer sequentially stacked on the base substrate, wherein the source-drain layer is electrically connected to the active layer through a via hole penetrating the insulating layer; and a transition layer arranged between the source-drain layer and the active layer at a position of the via hole, wherein the transition layer covers a bottom of the via hole and covers at least part of a sidewall of the via hole, and the transition layer comprises elements of the active layer and elements of a part of the source-drain layer, the part of the source-drain layer being in contact with the transition layer.

Abstract: A photographing method of an electronic device is provided. The electronic device includes a display screen. In some embodiments, display screen displays an icon of a first application. In those embodiments, display screen displays a user interface of the first application in response to an operation on the icon, where the user interface includes a photographing button. The display screen also displays a photographing preview interface of a second application in response to an operation on the photographing button, where the second application is a camera application, and the photographing preview interface is used to display an image collected by the camera. When ambient light meets a photographing condition, the electronic device automatically photographs the image collected by the camera.

Abstract: An electrode assembly, including a first electrode plate, a second electrode plate, and a separator. The electrode assembly is formed by winding the first electrode plate, the separator, and the second electrode plate. A first tab formed by a plurality of first tab units and a second tab formed by a plurality of second tab units are disposed on the first electrode plate, and a third tab formed by a plurality of third tab units is disposed on the second electrode plate. The electrode assembly is provided with a multi-tab structure to achieve purposes of enhancing a current-carrying capacity of the battery and reducing a temperature rise.

Abstract: An OLED display substrate, a display panel, a display device, a manufacturing method and a fingerprint identification module are provided. The OLED display substrate includes a microporous light-shielding pattern arranged between adjacent pixel regions and including a plurality of pinholes. The microporous light-shielding pattern is arranged at a same layer as, and insulated from, a nontransparent electrode of the OLED display substrate.

Abstract: A bridge detecting vehicle with two foldable arms, including: a vehicle body, slewing mechanisms, horizontal and vertical arms and telescopic arms. One end of the two horizontal arms is respectively arranged on the slewing mechanisms, and the other end of the two horizontal arms is respectively connected to the two horizontal arms. A crossed arm is provided between the two horizontal arms. The two vertical arms are respectively connected to the two horizontal arms via ball joints. A detecting device is respectively provided at rear ends of the two telescopic arms.