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 display substrate of an electronic device and a method for manufacturing the display substrate are provided. The display substrate includes: a base; a thin film transistor formed on a side of the base; an organic light emitting layer, formed on a side of the thin film transistor facing away from the base; and a touch electrode layer, formed in the organic light emitting layer.

An OLED array substrate includes a plurality of pixel structure, including a plurality of pixel units, each of the plurality of pixel units including: a base substrate; a first electrode disposed above the base substrate; a light emitting layer disposed on a side of the first electrode facing away from the base substrate; a second functional layer disposed on a side of the light emitting layer facing away from the base substrate, wherein the second functional layer wraps the light emitting layer.

A compound, a method of synthesizing a compound with pyridine ring, and a light-emitting element are provided. The compound has a structure represented by formula (1),

##STR00001## wherein ring A and ring B represent the same or different substituted or unsubstituted pyridine rings, respectively; A.sup.1 and A.sup.2 represent the same or different organic groups, respectively; R.sup.1 and R.sup.2 represent the same or different substituents, respectively; m and n represent 0, 1, 2 or 3, respectively.

An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.

An organic light emitting device (OLED) is provided that includes a cathode and an anode; a blue emitting layer; and at least two hybrid red/green emitting layers. One of the at least two hybrid red/green emitting layers is a cathode side, red/green emitting layer that is disposed between the cathode and the blue emitting layer. The second of the at least two hybrid red/green emitting layers is an anode side, red/green emitting layer that is disposed between the blue emitting layer and the anode. The OLED emits white light.

A light-emitting device includes: an anode; a cathode facing the anode; an emission layer between the anode and the cathode; and an electron control layer between the emission layer and the cathode, wherein the electron control layer includes an electron control compound represented by Formula 5:

##STR00001##

A method of manufacturing the light-emitting device includes: forming an emission layer on an anode; and forming an electron control layer on the emission layer, wherein the electron control layer includes an electron control compound represented by Formula 5.

An organic light emitting display device includes a plurality of pixels on a substrate, the plurality of pixels having a red subpixel, a green subpixel, and a blue subpixel; an anode on the substrate; a first hole transfer layer on the anode; a first emission layer on the first hole transfer layer in the red subpixel, the green subpixel, and the blue subpixel; a first electron transfer layer on the first emission layer; an N-type charge generation layer on the first electron transfer layer; a second hole transfer layer on the N-type charge generation layer; a second emission layer on the second hole transfer layer in the red subpixel, the green subpixel, and the blue subpixel; a second electron transfer layer on the second emission layer; and a cathode on the second electron transfer layer,

An organic EL element includes a pixel electrode, a light emitting function layer that is formed on the pixel electrode, an electron injection layer formed on the light emitting function layer, and a counter electrode that is formed on the electron injection layer and that has semi-transmissive reflectivity, in which the counter electrode contains a reductive material that reduces material of the electron injection layer and Ag with atomic ratio of 75% or more, and an adsorption layer is formed on the counter electrode.

By providing a novel polycyclic aromatic compound in which a plurality of aromatic rings are linked via a boron atom, a nitrogen atom, or the like, options of a material for an organic EL element are increased. In addition, by using the novel polycyclic aromatic compound as a material for an organic electroluminescent element, an excellent organic EL element is provided.