A display device comprises a display panel substrate and a glass substrate over said display panel substrate, wherein said display panel substrate comprises multiple contact pads, a display area, a first boundary, a second boundary, a third boundary and a fourth boundary, wherein said display area comprises a first edge, a second edge, a third edge and a fourth edge, wherein said first boundary is parallel to said third boundary and said first and third edges, wherein said second boundary is parallel to said fourth boundary and said second and fourth edges, wherein a first least distance between said first boundary and said first edge, wherein a second least distance between said second boundary and said second edge, a third least distance between said third boundary and said third edge, a fourth distance between said fourth boundary and said fourth edge, and wherein said first, second, third and fourth least distances are smaller than 100 micrometers, and wherein said glass substrate comprising multiple metal conductors through in said glass substrate and multiple metal bumps are between said glass substrate and said display panel substrate, wherein said one of said metal conductors is connected to one of said contact pads through one of said metal bumps.

The invention relates to heteroaromatic compounds, particularly for use in electronic devices. The invention further relates to a method for producing the compounds according to the invention and to electronic devices containing same.

A heterocyclic compound and an organic light-emitting device including the same are provided. The heterocyclic compound is represented by Formula 1: ##STR00001## Details of R1, R2, R3, X1, L1, and a1 and b1 are provided in the disclosure.

An organometallic compound represented by Formula 1A: ##STR00001## wherein, in Formula 1A, groups and variables are the same as described in the specification.

The present invention relates to iridium complexes suitable for use in organic electroluminescent devices, especially as emitters.

A tensioning device, including a base configured to carry a mask plate, a clamp configured to clamp the mask plate, and a deformation adjusting assembly provided on the base or on the clamp, wherein the deformation adjusting assembly is configured to adjust a deformation of an end portion of the mask plate protruding from the base in a direction of gravity when the base carries the mask plate, so as to make the deformation less than a preset deformation threshold. A base, a clamp and a clamping for the mask plate are also provided.

An OLED display panel and a manufacturing method thereof, and an OLED display device are disclosed. The OLED display panel includes a base substrate; a first film layer and a second film layer, sequentially provided on the base substrate, a first via-hole penetrating through the first film layer being provided in the first film layer, a second via-hole penetrating through the second film layer being provided in the second film layer at a position corresponding to the first via-hole, the second via-hole being in communication with the first via-hole, and the first film layer and the second film layer form a first step at a position of the second via-hole; and a connection wire, provided in both the first via-hole and the second via-hole and overlying the first step.

An apparatus for manufacturing a display apparatus includes a deposition source, a nozzle head, a substrate fixer, and a deposition preventer. The deposition source is outside the chamber and vaporizes or sublimates a deposition material. The nozzle head is in the chamber, is connected to the at least one deposition source, and simultaneously sprays the deposition material onto an entire surface of a display substrate. The substrate fixer is connected to the chamber and moves linearly, with the display apparatus is mounted on the substrate fixer. The deposition preventer is in the chamber surrounding an edge portion of the nozzle head and an edge portion of the substrate fixer. The deposition preventer is heated during a deposition process.

An aspect of the present disclosure is a method that includes combining a first organic salt (A.sup.1X.sup.1), a first metal salt (M.sup.1(X.sup.2).sub.2), a second organic salt (A.sup.2X.sup.3), a second metal salt (M.sup.2Cl.sub.2), and a solvent to form a primary solution, where A.sup.1X.sup.1 and M.sup.1(X.sup.2).sub.2 are present in the primary solution at a first ratio between about 0.5 to 1.0 and about 1.5 to 1.0, and A.sup.2X.sup.3 to M.sup.2Cl.sub.2 are present in the primary solution at a second ratio between about 2.0 to 1.0 and about 4.0 to 1.0. In some embodiments of the present disclosure, at least one of A.sup.1 or A.sup.2 may include at least one of an alkyl ammonium, an alkyl diamine, cesium, and/or rubidium.

By providing a novel polycyclic aromatic amino compound having an amino substituent and having a plurality of aromatic rings linked via a boron atom, an oxygen atom, or the like, for example, as in the following formula, a selection range of a material for an organic EL element is widened. In addition, by using the novel polycyclic aromatic amino compound as a material for an organic electroluminescent element, an excellent organic EL element is provided ##STR00001##