A compound of Chemical Formula 1, and an organic light emitting device including the same, the compound used as a material of an organic material layer of the organic light emitting device and providing high color purity and enhanced lifetime properties.

##STR00001##

a compound represented by formula (A):

##STR00001##

wherein Ar, R.sup.1 to R.sup.7, R.sup.11 to R.sup.14, R.sup.21 to R.sup.24, R.sup.31 to R.sup.34, *1, and R.sup.41 to R.sup.48 are as defined in the description provides organic electroluminescence devices with improved device performance.

A display device includes a substrate including a display area and a non-display area; a pixel circuit layer disposed on a first surface of the substrate and including at least one transistor; a display element layer disposed on the pixel circuit layer and including a light emitting element; a thin film encapsulation layer disposed on the display element layer; and a dummy unit disposed in the non-display area and disposed on an edge portion of the substrate. The dummy unit includes a transparent conductive material.

Provided are a compound which can improve the luminous efficiency, stability, and service life of an element; an organic electric element using same; and an electronic device thereof.

A compound of Chemical Formula 1, and an organic light emitting device including the same are provided. The compound is used as a material of an organic material layer of an organic light emitting device, and provides enhanced efficiency, low driving voltage and/or increased lifetime properties of the organic light emitting device.

##STR00001##

The present specification relates to a heterocyclic compound represented by Chemical Formula 1, and an organic light emitting device and a composition for an organic material layer comprising the same.

A display module includes a display panel including a flat region, and a bending region adjacent to the flat region. A protective layer is disposed on at least one side of the display panel. The protective layer includes a base curing layer disposed on the display panel. A plasma processing layer is disposed on the base curing layer.

A display device is disclosed. The display device of the present disclosure comprises: a flexible display panel; a roller that is elongated and rolls up or unrolls the display panel; a housing in which the roller is located and having an opening through which the display panel passes; and a door assembly which is coupled to the housing adjacent to the opening, and opens and closes the opening, wherein the door assembly comprises: a door for opening or closing the opening; and a suspender positioned between the housing and the door and having one end fixed to one of the housing and the door, and the other end movably coupled to the other one.

A compound represented by formula (A): ##STR00001##
wherein Ar, R.sup.1 to R.sup.7, R.sup.11 to R.sup.14, R.sup.21 to R.sup.24, R.sup.31 to R.sup.34, *1, and R.sup.41 to R.sup.48 are as defined in the description provides organic electroluminescence devices with improved device performance.

Provided is a compound of Chemical Formula 1:

##STR00001##

wherein one of X.sub.1 to X.sub.8 is N, and one of the rest is C bonded to L.sub.1, and the rest are each independently CR; R is hydrogen or deuterium; Y is O or S; L.sub.1 is a single bond or

##STR00002##

L.sub.2 and L.sub.3 are each independently a single bond, phenylene, or naphthylene; Ar.sub.1 and Ar.sub.2 are each independently phenyl, biphenyl, terphenyl, quaterphenyl, naphthyl, binaphthyl, (naphthyl)phenyl, (phenyl)naphthyl, phenanthrenyl, triphenylenyl, chrysenyl, tetracenyl, benz[a]anthracenyl, benzo[c]phenanthrenyl, fluorenyl, 9,9-dimethylfluorenyl, 9,9-diphenylfluorenyl, spirobifluorenyl, fluoranthenyl, dibenzothiophenyl, dibenzofuranyl, carbazolyl or 9-phenylcarbazolyl, with the proviso that Ar.sub.1 and Ar.sub.2 are not phenyl at the same time, and Ar.sub.1 and Ar.sub.2 are each independently unsubstituted or substituted with at least one of deuterium, a C.sub.1-20 alkyl, a C.sub.3-20 cycloalkyl, or a C.sub.6-20 aryl, and an organic light emitting device including the same.