The present application discloses a method for modifying zinc oxide nanoparticles, comprising following steps: obtaining zinc oxide solution and betaine ligands; mixing the zinc oxide solution and the betaine ligand, keeping a resulting mixed solution reacted under a protective gas atmosphere at a preset temperature, and separating a modified zinc oxide from the resulting mixed solution to obtain a modified zinc oxide. The method for modifying zinc oxide nanoparticles provided in the present application is simple and quick to operate, suitable for industrial production and meets application requirements. And the modified zinc oxide with betaine ligands grafted on the surface has good stability and excellent monodisperse performance, hinders the transmission rate of electrons to a certain extent and improves the recombination efficiency of electrons and holes in the quantum dot light-emitting layer.

A display panel includes: a transparent substrate with a display area including a light-emitting area and a non-light-emitting area; a light-emitting device on the transparent substrate, where the light-emitting device includes a first transparent electrode layer, a light-emitting functional layer and a second transparent electrode layer; the light-emitting functional layer includes light-emitting parts arranged in an array, and the light-emitting parts are in the corresponding light-emitting area; a driving structure between the transparent substrate and the light-emitting device, where the driving structure includes pixel circuits arranged in an array and a power supply line electrically connected to the pixel circuits to provide a power voltage, the pixel circuits are configured to drive the light-emitting parts to emit light; and orthographic projections of the pixel circuits and the power supply line on the transparent substrate are all located within an orthographic projection range of the non-light-emitting area on the transparent substrate.

An organic light-emitting display apparatus includes: a substrate; first and second pixel electrodes on the substrate and spaced from each other; an insulating layer between the first and second pixel electrodes, the insulating layer covering ends of the first and second pixel electrodes, and having a step height difference; an auxiliary electrode on the insulating layer; first and second intermediate layers on the first and second pixel electrodes, the first and second intermediate layers being spaced from each other, and including first and second light-emitting layers, respectively; first and second opposite electrodes on the first and second intermediate layers, the first and second opposite electrodes being spaced from each other, and in contact with the auxiliary electrode; and first and second passivation layers on the first and second opposite electrodes, the first and second passivation layers being spaced from each other, and covering the first and second opposite electrodes, respectively.

A display device includes an anode electrode, an organic light emitting layer, and a first cathode electrode. Provided are a plurality of light emitting elements in which the anode electrode, the organic light emitting layer, and the first cathode are separated for each sub-pixel, a protective layer covering the plurality of light emitting elements, and a second cathode electrode provided on the protective layer. The second cathode electrode is connected to each separated first cathode electrode.

A display panel includes: a display area including: a first display area having a plurality of first light-emitting elements; a second display area having a plurality of second light-emitting elements and a transmission area; and a third display area having a plurality of third light-emitting elements; a peripheral area at an outer side of the display area and comprising a bending area; a plurality of first sub-pixel circuits in the first display area and electrically connected to the plurality of first light-emitting elements, respectively; a plurality of second sub-pixel circuits electrically connected to the plurality of second light-emitting elements, respectively; and a plurality of third pixel circuits electrically connected to the plurality of third light-emitting elements, respectively, wherein the plurality of second sub-pixel circuits are in the peripheral area, and the bending area is between the plurality of second sub-pixel circuits and the display area.

A display device includes a plurality of pixel electrodes, a common electrode common to the plurality of pixel electrodes, and a light-emitting layer sandwiched between the plurality of pixel electrodes and the common electrode. The light-emitting layer includes quantum dots covered by ferritin. Each of the plurality of pixel electrodes and the quantum dots are bonded via a peptide modifying the ferritin.

A transparent display device for providing only a viewer located at the front with an image is disclosed. The transparent display device comprises a substrate provided with a first subpixel, a second subpixel and a third subpixel, a first electrode provided in each of the first subpixel, the second subpixel and the third subpixel on the substrate, a light emitting layer provided on the first electrode, a second electrode provided on the light emitting layer, an upper color filter provided over the second electrode, a lower color conversion layer provided between the substrate and the first electrode, and a lower color filter provided between the substrate and the lower color conversion layer.

The present application relates to a display panel and a display device. The display panel includes a substrate, a driving layer group, and an anode layer stacked together. The driving layer group is located in the second display region. The anode layer includes a first anode located in the first display region. The first anode is electrically connected to a drain of the driving layer group via a conducting wire. The display panel further includes a first isolation layer and a lap layer located in the first display region. The first isolation layer is arranged between the lap layer and the conducting wire. The first isolation layer includes a first via hole. The conducting wire passes through the first via hole to connect with the lap layer, to electrically connect the first anode to the drain electrode of the driving layer group.

A first object of the present invention is to provide a photoelectric conversion element having a high external quantum efficiency and small variation in response. A second object of the present invention is to provide an imaging element, an optical sensor, and a compound related to the photoelectric conversion element.

The photoelectric conversion element includes, in the following order, a conductive film, a photoelectric conversion film, and a transparent conductive film, in which the photoelectric conversion film contains a compound represented by Formula (1).

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A metal oxide nanoparticle comprises a metal oxide core of formula M.sub.2O.sub.5, wherein M is tantalum (V) or niobium (V) and alkylsiloxane ligands bonded to the metal oxide core. The alkylsiloxane ligands are selected from the group consisting of isobutylsiloxane, allylsiloxane, vinylsiloxane, n-propyl siloxane, n-butylsiloxane, sec-butyl siloxane, tert-butyl siloxane, phenylsiloxane, n-octylsiloxane, isooctylsiloxane n-dodecyl siloxane, 4 -(trimethyl silyl)phenylsiloxane, para-tolylsiloxane, 4-fluorophenyl siloxane, 4 -chlorophenyl siloxane, 4-bromophenyl siloxane, 4-iodophenylsiloxane, 4-cyanophenyl siloxane, benzylsiloxane, methylsiloxane, ethylsiloxane, 4-(trifluoromethyl)phenylsiloxane, 4 -ammoniumbutylsiloxane, and any combination thereof.