Abstract: A facial recognition method using online sparse learning includes initializing target position and scale, extracting positive and negative samples, and extracting high-dimensional Haar-like features. A sparse coding function can be used to determine sparse Haar-like features and form a sparse feature matrix, and the sparse feature matrix in turn is used to classify targets.

Abstract: The embodiments of the present disclosure disclose a display substrate, a fabrication method thereof and a display apparatus. The display substrate includes: a base substrate, including a display region and a bonding region located on at least one side of the display region; a conductive layer, located on the base substrate and in the bonding region and including a plurality of first conducive terminals; and an insulation protection layer, located on one side, facing away from the base substrate, of the conductive layer, and having hollow regions and pattern regions, where the hollow regions cover the first conductive terminals, and the pattern regions cover gaps among the plurality of first conductive terminals.

Abstract: A touch control structure is provided. The touch control structure includes a plurality of first mesh electrodes along a row direction and a plurality of second mesh electrodes along a column direction. The touch control structure is limited in a touch control region and absent in a window region surrounded by the touch control region. The plurality of second mesh electrodes includes a first mesh block and a second mesh block; a first conductive plate connected to one or more mesh lines of the first mesh block; a second conductive plate connected to one or more mesh lines of the second mesh block; and a first conductive bridge connecting the first conductive plate and the second conductive plate. A second segment of the first conductive bridge is in a layer different from a first segment of the first conductive bridge, the first conductive plate, and the second conductive plate.

Abstract: Disclosed are a multi-line source ground-borehole transient electromagnetic detection method and a multi-line source ground-borehole transient electromagnetic detection device. The method includes following steps: S1, constructing a multi-line source ground-borehole transient electromagnetic forward model; S2, obtaining multi-line source ground-borehole transient electromagnetic responses of an underground target layer by the multi-line source ground-borehole transient electromagnetic forward model; and S3, recognizing the underground target layer according to electromagnetic diffusion characteristics of the multi-line source ground-borehole transient electromagnetic responses. A resolution and a detection capability of the underground target by a ground-borehole transient electromagnetic method is greatly improved by adopting technical schemes.

Abstract: A touch structure includes first touch units and second touch units located in a touch area, first conductive lines and at least one second conductive line. Each first conductive line is connected to one first touch unit and led out from a third peripheral sub-area. Each second conductive line is connected to one second touch unit, led out from a first peripheral sub-area and passes through the third peripheral sub-area. Part of the second conductive line located in the third peripheral sub-area is further away from the touch area than part of the first conductive lines located in the third peripheral sub-area. At least one first conductive line is further away from the touch area in a first direction than another first conductive line, and lead-out position of the at least one first conductive line is closer to a second peripheral sub-area than that of the another first conductive line.

Abstract: A display apparatus and a method for manufacturing the display apparatus are provided. The display apparatus includes: a flexible panel which includes a display region and a non-display region, where the non-display region includes a bending sub-region and a back sub-region connected to the bending sub-region and arranged opposite to the display region, a multiplexer is arranged in the back sub-region; and a shielding electrode layer located on a side of the multiplexer away from the back sub-region, an orthographic projection of the multiplexer onto a plane where the shielding electrode layer is located being within the shielding electrode layer.

Abstract: A touch structure, a touch display substrate, and a touch display device. The touch structure includes a touch region and a peripheral region surrounding the touch region, wherein the touch region includes a first edge and a second edge opposite to each other, and a third edge and a fourth edge opposite to each other. The touch structure further includes a first touch electrode and a second touch electrode, which are mutually crossed with and insulated from each other, and located in the touch region. The touch structure further includes a first touch trace and a second touch trace, located in the peripheral region. The first touch trace is electrically connected with the first touch electrode at the first edge and the second edge, respectively; the second touch trace is electrically connected with the second touch electrode at the third edge and the fourth edge, respectively.

Abstract: Microfluidic platforms for forming and culturing perfusable hydrogel vascularized tissues typically include one or more culture chambers. Each culture chamber includes at least two openings overlaid over a gel channel. The gel channel typically includes at least two tissue zones and a trapping or insertion portion positioned between the tissue zones. The trapping or insertion portion permits vascular networks to develop between the two tissue zones containing vascularized tissues and/or vascularized tissue masses. The vascularized tissue masses in the tissue zones of the gel channel are connected indirectly, via the vascular network of the trapping portion. Also described are methods of forming and culturing perfusable vascularized tissue masses directly or indirectly interconnected via vascularized networks.

Abstract: The present disclosure provides a display substrate, a fabrication method thereof and a display panel. The display substrate includes a substrate; and a pixel defining layer on the substrate. The display substrate further comprises a display area, a non-display area and a light-transmitting area, the display area and the non-display area at least partially surround the light-transmitting area, the pixel defining layer extends from the display area to the non-display area, the pixel defining layer is provided with a first opening, the first opening comprises a plurality of first sub-openings and a plurality of second sub-openings, the plurality of first sub-openings are in the display area, the plurality of second sub-openings are in the non-display area, and the plurality of second sub-openings are closer to the light-transmitting area than the plurality of first sub-openings.

Abstract: The present disclosure provides a display substrate, a manufacturing method thereof, and a display device. In the display substrate, the sub-pixel driving circuit includes a driving transistor and a first reset transistor, and a gate electrode of the first reset transistor is electrically connected to the reset signal line pattern, a first electrode of the first reset transistor is electrically connected to the initialization signal line pattern, and a second electrode of the first reset transistor is electrically connected to a gate electrode of the driving transistor; and the shielding pattern is electrically connected to the power signal line pattern, an orthographic projection of the shielding pattern on the substrate overlaps an orthographic projection of the first electrode of the first reset transistor on the substrate.

Abstract: A display substrate, a method for manufacturing the display substrate and a display device are provided. The display substrate includes a display region and a non-display region surrounding the display region. The display substrate further includes: an organic functional layer including a first portion located in the display region and a second portion located in the non-display region. The second portion is provided with at least one isolation groove, and is partitioned into at least two separate sub-portions by the at least one isolation groove, and the at least two sub-portions are arranged sequentially along a first direction from the display region to a boundary of the display substrate.

Abstract: A display substrate and a display device are disclosed. The display substrate includes a base substrate, a second conductive layer, a second planarization layer and a plurality of light emitting element groups; each of the plurality of light emitting element groups includes a first light emitting element, a second light emitting element, a third light emitting element and a fourth light emitting element, the fourth light emitting element includes a fourth anode, a plurality of third via holes corresponding to one light emitting element row are approximately located on a first straight line extending along the first direction, and an orthographic projection of the fourth via hole closest to the first straight line on the base substrate is located at a side of the first straight line close to the fourth anode corresponding to the fourth via hole.

Abstract: A touch control structure is provided. The touch control structure includes a corner row including a plurality of row mesh blocks electrically connected along a row direction; and a plurality of residual portions in a corner region, and electrically connected to the plurality of row mesh blocks. The touch control structure includes a corner column including a plurality of column mesh blocks electrically connected along a column direction; and a corner column mesh block at least partially in the corner region. The corner column mesh block includes a main portion and a plurality of protrusion portions along an edge of the main portion. The plurality of residual portions and the plurality of protrusion portions are alternately arranged along a direction substantially parallel to the edge of the main portion. The touch control structure further includes a residual connecting conductive plate electrically connecting the plurality of residual portions together.

Abstract: A display substrate and a display device are disclosed. The display substrate includes a base substrate; a plurality of pixel driving circuits; a first conductive layer; a first planarization layer; and a second conductive layer; the second conductive layer includes a first conductive portion, the first conductive portion includes a closed annular portion, which is separated from at least one conductive portion adjacent thereto, each light emitting element groups includes a first light emitting element, the first light emitting element includes a first anode, and an orthographic projection of the first anode overlaps with an orthographic projection of the closed annular portion; the plurality of conductive portions further include a second conductive portion adjacent to the first conductive portion, and an orthographic projection of the second conductive portion on the base substrate overlaps with the orthographic projection of the first anode on the base substrate.

Abstract: A display substrate includes: a base substrate having a display area and a peripheral area surrounding the display area; an electroluminescent device disposed on the base substrate and located in the display area, the electroluminescent device including an anode, an electroluminescent layer, and a cathode disposed in this order on the base substrate; a negative power line disposed on the base substrate and located in the peripheral area, the negative power line extending along a side of the base substrate and being electrically connected to the cathode; and an insulating layer between the base substrate and the negative power line, a side of the insulating layer close to the negative power line being provided with at least a trench. The trench is located in the peripheral area and extends in an extending direction of the negative power line, a part of the negative power line being located in the trench.

Abstract: Disclosed are a display panel and a display device. The display panel includes: at least one group of gate driving signal lines, the gate driving signal lines starting from the driving chip bonding area and going around the display area after passing through the bending area; and at least two first driving voltage lines, the at least two first driving voltage lines respectively starting from the flexible printed circuit bonding area, going through the bending area after passing through two sides of the driving chip bonding area, and extending to be close to the display area, and the at least two first driving voltage lines are respectively at two sides of the at least one group of gate driving signal lines.

Abstract: A display panel has an opening region, a display region, and first and second peripheral regions; and includes a substrate, a first barrier structure surrounding the display region and in the first peripheral region, a second barrier structure surrounding the opening region and in the second peripheral region, and a crack detection line including first and second portions. The first portion surrounds the opening region, and is on a side of the second barrier structure distal to the display region. Both ends of the second portion are respectively connected to both ends of the first portion. Orthogonal projections of the second portion and the second barrier structure on the substrate overlap each other. The second portion extends into the first peripheral region through the display region. A height of a portion of the second barrier structure overlapping the second portion is less than that of the first barrier structure.

Abstract: Disclosed are a display panel and a display device. The display panel includes: a base substrate and a plurality of sub-pixels located on the base substrate; and each sub-pixel includes: a semiconductor layer located on the base substrate and including a first active layer of an initialization transistor, a second active layer of a reset transistor and a third active layer of a data writing transistor; a first conductive layer located on a side of the semiconductor layer and including a data signal line extending in a first direction; and a second conductive layer located on the base substrate and including a drive gate of a drive transistor; and an orthographic projection of the second active layer on the base substrate is located between an orthographic projection of the first active layer on the base substrate and an orthographic projection of the data signal line on the base substrate.

Abstract: Provided is a touch panel. The touch panel includes a back plate and a touch electrode layer disposed on a side of the back plate, wherein the touch electrode layer has a circular touch region and includes a plurality of touch electrodes, the plurality of touch electrodes are distributed in the touch region, and any touch electrode distal from a periphery of the touch region has three side edges sequentially connected end to end.

Abstract: A thin film transistor is provided. The thin film transistor includes a base substrate; a first target layer on the base substrate; a first insulating layer on a side of the first target layer away from the base substrate; an intermediate layer on a side of the first insulating layer away from the first target layer; a second insulating layer on a side of the intermediate layer away from the first insulating layer; and a second target layer on a side of the second insulating layer away from the intermediate layer. The first target layer is electrically connected to the second target layer. The intermediate layer is one of a gate electrode and an active layer, and the first target layer and the second target layer together constitute another one of the gate electrode and the active layer.