Abstract: An electromagnetic ultrasonic double wave transducer, comprising a shell (1), and a permanent magnet assembly, a coil (4), a shielding layer (5), and a wire (6) which are provided in the shell (1). The permanent magnet assembly comprises a first permanent magnet (2) and a second permanent magnet (3) sleeved on the first permanent magnet (2). The magnetizing directions of the first permanent magnet (2) and the second permanent magnet (3) are perpendicular to the bottom of the shell (1), and the magnetic field directions of the first permanent magnet (2) and the second permanent magnet (3) are opposite. A non-conducting non-magnetic bushing material (9) is provided between the first permanent magnet (2) and the second permanent magnet (3), and upper end faces of the first permanent magnet (2) and the second permanent magnet (3) realize magnetic circuit closing by means of a magnetic circuit closing element (8).

Abstract: The present disclosure provides a display device and a manufacturing method thereof. In an embodiment, the display device includes a display panel, a touchpad and a joint. The touchpad is located on a display side of the display panel and includes a main body area and a bonding area. The joint is arranged on a side of the display panel facing the touchpad and is configured to electrically connect the touchpad and a driving chip. A side of the bonding area facing the display panel is configured to be joined with the joint.

Abstract: A display module includes a display panel, a first optical adhesive layer disposed on a side of a display surface of the display panel, a touch panel disposed on a side of the first optical adhesive layer away from the display panel, and at least one isolation film between the display panel and the touch panel. The display panel includes a display region and a peripheral region that is provided with at least one alignment mark. The touch panel includes a plurality of peripheral signal lines. An orthographic projection of the peripheral signal lines on a plane where the display panel is located at least partially overlaps with an orthographic projection of the at least one alignment mark on the plane. An orthographic projection of each isolation film on the plane covers an alignment mark.

Abstract: A display apparatus and a preparation method thereof, the display apparatus includes a display panel whose display area has a first hole; a polarizer disposed on one side of the display panel, wherein the polarizer has a blind hole, the blind hole penetrates through an optical characteristic layer in the polarizer, and an orthographic projection of the blind hole on the display panel at least partially overlaps with the first hole; a first optical adhesive layer disposed on a surface of the polarizer away from the display panel, wherein the first optical adhesive layer includes a planar portion and a convex portion, and the convex portion is filled in the blind hole; a cover plate disposed on one side of the first optical adhesive layer away from the display panel.

Abstract: A touch panel includes first touch electrodes and second touch electrodes. At least one first touch electrode includes first sub-electrodes electrically connected to one another and first connecting sub-portions located between and electrically connecting every two adjacent first sub-electrodes. At least one second touch electrode includes second sub-electrodes electrically connected to one another and second connecting sub-portions located between and electrically connecting every two adjacent second sub-electrodes. At least one first connecting sub-portion at least partially overlaps at least one second connecting sub-portion so as to form a stacked structure as a connecting portion. The touch panel includes an opening area, and the connecting portions include at least one adjacent connecting portion adjacent to the opening area, where a center of an orthographic projection of the adjacent connecting portion does not overlap a first intersection point and is located outside the opening area.

Abstract: Provided is a fusion protein for a biosensing element; the fusion protein includes glucose oxidase (GOD) and a carbohydrate-binding module (CBM); and the GOD is linked to the CBM by means of a linker peptide. The biosensing element specifically binds to cellulose based on CBM.

Abstract: A display module includes a display panel, a first optical adhesive layer disposed on a side of a display surface of the display panel, a touch panel disposed on a side of the first optical adhesive layer away from the display panel, and at least one isolation film between the display panel and the touch panel. The display panel includes a display region and a peripheral region that is provided with at least one alignment mark. The touch panel includes a plurality of peripheral signal lines. An orthographic projection of the peripheral signal lines on a plane where the display panel is located at least partially overlaps with an orthographic projection of the at least one alignment mark on the plane. An orthographic projection of each isolation film on the plane covers an alignment mark.

Abstract: A display module includes; display panel, which has a fingerprint identification region; a first protective layer disposed on a back surface of the display panel, the back surface being a surface of the display panel opposite to a display surface of the display panel, and the first protective layer being provided therein with a first opening for exposing the fingerprint identification region; and a metal protective disposed on a surface of the first protective layer away from the display panel, the metal protective layer being provided therein with a second opening, the second opening exposing the first opening, and an orthographic projection of an edge of the second opening the display panel being located outside an orthographic projection of an edge of the first opening on the display panel.

Abstract: The present disclosure relates to the technical field of display, and discloses a display device. The display device includes: a display module having a module body and a first bonding portion located on one side of a first long edge of the module body, where the first bonding portion is bent to the back face of the module body; and a first flexible printed circuit located on the back face of the module body, where the first flexible printed circuit has a second bonding portion, and the second bonding portion is fixedly connected to the first bonding portion of the display module; the length of the second bonding portion along an extending direction of the first long edge is substantially identical with the length of the first bonding portion along the extending direction of the first long edge.

Abstract: The present disclosure provides a display device and a manufacturing method thereof. In an embodiment, the display device includes a display panel, a touchpad and a joint. The touchpad is located on a display side of the display panel and includes a main body area and a bonding area. The joint is arranged on a side of the display panel facing the touchpad and is configured to electrically connect the touchpad and a driving chip. A side of the bonding area facing the display panel is configured to be joined with the joint.

Abstract: A display device includes a flexible display panel including a display part, a bonding part, and a substrate bending part connecting the display part and the bonding part, the bonding part being located on the back side of the display part, and a side of the bonding part away from the display part being the bonding side, the driving chip being arranged on the bonding side of the bonding part, and having a first side and a second side opposite in the first direction, where the first side is close to the substrate bending part, and the second side is distal to the substrate bending part, the first direction being perpendicular to the thickness direction; a main flexible circuit board, disposed on the second side of the driving chip and connected to the bonding side of the bonding part; a touch layer; and a control flexible circuit board.

Abstract: A touch panel includes: a plurality of first touch electrodes including a plurality of first sub-electrodes electrically connected to one another and a plurality of first connecting sub-portions located between and electrically connecting every two adjacent first sub-electrodes; and a plurality of second touch electrodes including a plurality of second sub-electrodes electrically connected to one another and a plurality of second connecting sub-portions located between and electrically connecting every two adjacent second sub-electrodes. At least one first connecting sub-portion at least partially overlaps at least one second connecting sub-portion so as to form a stacked structure as a connecting portion. The touch panel includes an opening area. The plurality of connecting portions include at least one adjacent connecting portion adjacent to the opening area.

Abstract: The present invention discloses a flexible display screen and a display device. The flexible display screen includes: a flexible display panel, a first flexible electromagnetic shielding layer and a bottom film disposed in that order on a side, opposite to a light-emitting side, of the flexible display panel; the organic electroluminescent flexible display panel has a bending area, and the bending area is provided with signal lines; the flexible display screen further includes: a second flexible electromagnetic shielding layer disposed on a light-emitting side of the flexible display panel and covering the signal lines, and a colloidal insulating layer covering the second flexible electromagnetic shielding layer; and the materials of the first flexible electromagnetic shielding layer and the second flexible electromagnetic shielding layer are both conductive materials with fluidity.

Abstract: The present disclosure relates to the technical field of display, and discloses a display device. The display device includes: a display module having a module body and a first bonding portion located on one side of a first long edge of the module body, where the first bonding portion is bent to the back face of the module body; and a first flexible printed circuit located on the back face of the module body, where the first flexible printed circuit has a second bonding portion, and the second bonding portion is fixedly connected to the first bonding portion of the display module; the length of the second bonding portion along an extending direction of the first long edge is substantially identical with the length of the first bonding portion along the extending direction of the first long edge.

Abstract: A display device includes: a display panel; and a polarizer, an optical adhesive, and a cover plate sequentially arranged on the display panel. The display panel has a transparent region. The polarizer has first and second surfaces parallel to each other, and the first surface is proximal to the display panel. The polarizer has therein a through hole penetrating through the first and second surfaces. The through hole has first and second boundaries at the first and second surfaces, respectively. An orthogonal projection of the first boundary on the second surface is inside and not in contact with the second boundary. For third and fourth boundaries of the through hole parallel to the first boundary, an orthogonal projection of the third boundary on the fourth boundary does not extend beyond the fourth boundary, the third boundary being closer to the first boundary than the fourth boundary.

Abstract: A plug-in structure includes a connector and a plug; wherein the connector is provided with a jack. The jack is provided with a first terminal and a first guide rail structure are arranged, the first terminal being configured to be electrically connected to a first flexible circuit board; and the plug is provided with a second terminal and a second guide rail structure, the second terminal being configured to be electrically connected to a second flexible circuit board, and the second guide rail structure of the plug being in cooperation with the first guide rail structure in the jack to guide the plug to move in the jack, such that the first terminal and the second terminal are electrically connected.

Abstract: A display apparatus and a preparation method thereof, the display apparatus includes a display panel whose display area has a first hole; a polarizer disposed on one side of the display panel, wherein the polarizer has a blind hole, the blind hole penetrates through an optical characteristic layer in the polarizer, and an orthographic projection of the blind hole on the display panel at least partially overlaps with the first hole; a first optical adhesive layer disposed on a surface of the polarizer away from the display panel, wherein the first optical adhesive layer includes a planar portion and a convex portion, and the convex portion is filled in the blind hole; a cover plate disposed on one side of the first optical adhesive layer away from the display panel.

Abstract: The present invention discloses a flexible display screen and a display device. The flexible display screen includes: a flexible display panel, a first flexible electromagnetic shielding layer and a bottom film disposed in that order on a side, opposite to a light-emitting side, of the flexible display panel; the organic electroluminescent flexible display panel has a bending area, and the bending area is provided with signal lines; the flexible display screen further includes: a second flexible electromagnetic shielding layer disposed on a light-emitting side of the flexible display panel and covering the signal lines, and a colloidal insulating layer covering the second flexible electromagnetic shielding layer; and the materials of the first flexible electromagnetic shielding layer and the second flexible electromagnetic shielding layer are both conductive materials with fluidity.

Abstract: The invention relates to a display panel, a preparation method thereof and a display device. The display panel comprises: a substrate comprising a display area and a non-display area at least positioned on one side of the display area, one or more via holes are formed in the non-display area; a circuit layer positioned on one side of the substrate and comprising a plurality of traces which extend from the display area of the substrate to the non-display area; and bonding pads positioned on one side of the substrate away from the circuit layer, an orthographic projection of the bonding pads on the substrate covers an orthographic projection of the one or more via holes on the substrate, and the circuit layer is connected with the bonding pads through the one or more via holes.

Abstract: A plug-in structure includes a connector and a plug; wherein the connector is provided with a jack. The jack is provided with a first terminal and a first guide rail structure are arranged, the first terminal being configured to be electrically connected to a first flexible circuit board; and the plug is provided with a second terminal and a second guide rail structure, the second terminal being configured to be electrically connected to a second flexible circuit board, and the second guide rail structure of the plug being in cooperation with the first guide rail structure in the jack to guide the plug to move in the jack, such that the first terminal and the second terminal are electrically connected.