A profiling and laminating device includes: a fixture, a carrier film, a first driving assembly and a second driving assembly. The fixture includes a first main surface, a curved transition surface and a second main surface that are connected in sequence, and the first main surface and the second main surface are located on two opposite sides of the fixture, respectively. A surface of the carrier film is used for carrying a flexible display panel, and another surface of the carrier film is used for covering at least the first main surface and the second main surface of the fixture. The first driving assembly is used for driving the fixture to move. The second driving assembly is used for driving the carrier film to move.

A light-emitting element includes: a cathode; an anode; an EML provided between the cathode and the anode; and an ETL provided between the cathode and the EML. The ETL contains, on an interface at least to the EML, metal oxide nano particles and a polymer chemically bonding to a surface of the metal oxide nano particles. The polymer contains a main chain of a polysiloxane bond and a side chain of an organic group.

Disclosed herein are surface-modified electron transport layers (“ETLs”) of organic light-emitting diodes (“OLEDs”). The ETLs comprise a ring-opening reaction product between a nitrogen-containing heterocycle of the ETL and an optionally substituted three-membered ring, such as an oxiranyl ring, an aziridinyl ring, or a thiiranyl ring, and methods of making the surface-modified ETLs.

A display panel, a mask used for evaporation, a mask assembly and a manufacturing method thereof are provided. The display panel includes: a base substrate; and a display area and a peripheral area; wherein, the peripheral area is provided with two types of dummy sub-pixel units, each type of dummy sub-pixel unit includes a dummy light-emitting material layer and a dummy auxiliary light-emitting layer, wherein, a first structure layer of a first dummy light-emitting material layer and a first dummy auxiliary light-emitting layer is arranged in the same layer as a second structure layer of a second dummy light-emitting material layer and a second dummy auxiliary light-emitting layer, and at least one of a size and a shape of an orthographic projection of the second structure layer on the base substrate is different from that of an orthographic projection of the first structure layer on the base substrate.

A display device includes: a display panel and a circuit board. The circuit board includes a base layer, a circuit pattern disposed on the base layer and electrically connected to the display panel, an alignment pattern disposed on the base layer and including the same material as the circuit pattern, a first cover layer disposed on the base layer, covering the circuit pattern, and provided with a first opening defined therethrough to expose the alignment pattern, and a second cover layer disposed on the first cover layer, provided with a second opening defined therethrough and overlapping the first opening, and including a barcode pattern defined on a surface of the second cover layer opposite to the first cover layer. The first cover layer overlapping the second opening is exposed through the second opening without being covered by the second cover layer.

A display device and a manufacturing method of the display device are provided. The display device includes a substrate; a pixel definition layer disposed on the substrate and having a plurality of pixel openings; a surface-active nanolayer disposed on a surface of the substrate and on a surface extending to the pixel definition layer, wherein the surface-active nanolayer covers a plurality of nanoparticles; and a light-emitting layer disposed in the plurality of pixel openings.

An organic EL device of the disclosure includes: a first electrode and a second electrode; and an organic layer provided between the first electrode and the second electrode. The organic layer includes a light-emitting layer. The organic layer includes, between the first electrode and the light-emitting layer, a first layer that contains a polycyclic aromatic hydrocarbon compound having orientation, and a second layer that contains a larger amount of nitrogen element than the first layer.

A method of fabricating a carbon nanotube based device, including forming a trench having a bottom surface and sidewalls on a substrate, selectively depositing a bi-functional compound having two reactive moieties in the trench, wherein a first of the two reactive moieties selectively binds to the bottom surface, converting a second of the two reactive moieties to a diazonium salt; and reacting the diazonium salt with a dispersion of carbon nanotubes to form a carbon nanotube layer bound to the bottom surface of the trench.

Embodiments of the disclosure provide an array substrate and a manufacturing method thereof, and a display panel. The array substrate includes a base substrate, and a plurality of sub-pixel areas arranged on the base substrate and arranged in arrays, wherein each sub-pixel area includes an electrode structure, a function layer and a blocking layer arranged on the base substrate in sequence; the function layer includes a plurality of accommodating cavities arranged spaced with each other; the blocking layer is lyophobic and includes through holes in one-to-one corresponding to the accommodating cavities one by one; each sub-pixel area in the structure of the above array substrate includes a plurality of uniformly distributed accommodating cavities, and a charged solution is filled into the accommodating cavities.

An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different print head/substrate scan offsets, offsets between print heads, the use of different nozzle drive waveforms, and/or other techniques. Optionally, patterns of fill variation can be introduced so as to mitigate observable line effects in a finished display device. The disclosed techniques have many other possible applications.