Provided is a production method related to an organic thin film formed using an organic electronic material containing a charge transport compound, the method suppressing any deterioration in performance during film formation and enabling the formation of an organic thin film having excellent performance. The method for producing an organic thin film includes a step of forming a coating film of an organic electronic material containing a charge transport compound, and a step of heating the coating film under an inert gas atmosphere to form an organic thin film.

A method of manufacturing an organic electroluminescence display panel includes: forming pixel electrodes in matrix on a substrate; arranging column banks extending in column direction above the substrate along row direction, the banks each being between adjacent pixel electrodes in the row direction; applying ink containing organic light emitting material to gaps between adjacent banks, the applied ink being continuous in the column direction; reducing pressure of atmosphere including the substrate to first pressure while positioning a rectifying plate at first distance from upper surface of the substrate, the plate covering region with the ink applied on the substrate; reducing, after the reducing, the pressure to second pressure, which is lower than the first pressure, or lower while positioning the plate at second distance, which is greater than the first distance, from the surface; heating the substrate to form organic functional layer; and forming counter electrode above the functional layer.

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.

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 printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.

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.

The disclosure provides a fabricating method of a QLED device and a QLED device. In the fabricating method of a QLED device, a mixed light-emitting layer is formed by doping a quantum dot material with a second hole transporting material having a valence band energy level between the quantum dot material and the first hole transporting material; a stepped barrier between the first hole transporting material and the doped second hole transporting material is used to enhance the hole injection; simultaneously, the first hole transporting material with a higher valence band energy level can block the electrons on one side of the hole transport layer close to the cathode to weaken the injection of electrons into the mixed light-emitting layer, thereby promoting the balance of carriers in the mixed light-emitting layer, improving the carrier recombination efficiency, and then improving the luminous efficiency and brightness of the QLED device.

A method for producing an organic EL device having an anode, a cathode, at least one organic functional layer disposed between the anode and the cathode, and a sealing layer, comprising a step of forming the anode, a step of forming the cathode, a step of forming the at least one organic functional layer and a step of forming the sealing layer, wherein the average concentration: A (ppm) of ammonia to which the organic EL device during production is exposed from initiation time of the step of forming the at least one organic functional layer until termination time of the step of forming the sealing layer and the exposure time thereof: B (sec) satisfy the formula (1-1):
0AB105(1-1).

To provide an organic photoelectric conversion element, imaging device, and optical sensor having low dark currents, and a method of manufacturing a photoelectric conversion element. Provided is a photoelectric conversion element, including: a first electrode; an organic photoelectric conversion layer disposed in a layer upper than the first electrode, the organic photoelectric conversion layer including one or two or more organic semiconductor materials; a buffer layer disposed in a layer upper than the organic photoelectric conversion layer, the buffer layer including an amorphous inorganic material and having an energy level of 7.7 to 8.0 eV and a difference in a HOMO energy level from the organic photoelectric conversion layer of 2 eV or more; and a second electrode disposed in a layer upper than the buffer layer.

A photoelectric conversion device in an embodiment includes a first photoelectric conversion part including a first transparent electrode, a first photoelectric conversion layer, and a first counter electrode and a second photoelectric conversion part including a second transparent electrode, a second photoelectric conversion layer, and a second counter electrode, the first photoelectric conversion part and the second photoelectric conversion part being provided on a transparent substrate. The first counter electrode and the second transparent electrode are electrically connected by a connection part. As for the first photoelectric conversion layer and the second photoelectric conversion layer, adjacent portions of the adjacent first and second photoelectric conversion layers are electrically separated by an inactive region having electrical resistance higher than that of the first and second photoelectric conversion layers.

A bake system may include a chamber having an internal space, a stage disposed in the internal space of the chamber and on which a target substrate is disposed, a gas ejection structure providing a process gas in the chamber, an exhaust structure, an atmosphere analyzer monitoring moisture and oxygen in the chamber, and a gas supplier controlling a flow rate of the process gas based on information provided from the atmosphere analyzer. The exhaust structure may include a suction part disposed in the internal space, and an exhaust part connected to the suction part and is disposed outside the chamber.