There is disclosed a compound Formula I ##STR00001##
In Formula I: Z is CR.sup.4R.sup.5, C═CR.sup.4R.sup.5, SiR.sup.4R.sup.5, GeR.sup.4R.sup.5, NR.sup.4a, PR.sup.4a, P(O)R.sup.4a, O, S, SO, SO.sub.2, Se; SeO, SeO.sub.2, Te, TeO, or TeO.sub.2; R.sup.1-R.sup.3 are the same or different at each occurrence and are D, aryl, heteroaryl, alkyl, amino, silyl, germyl, deuterated aryl, deuterated heteroaryl, deuterated alkyl, deuterated amino, deuterated silyl, or deuterated germyl, where two groups selected from R.sup.1, R.sup.2, and R.sup.3 can be joined together to form a fused ring; R.sup.4-R.sup.5 are the same or different at each occurrence and are H, D, aryl, heteroaryl, alkyl, amino, silyl, germyl, deuterated aryl, deuterated heteroaryl, deuterated alkyl, deuterated amino, deuterated silyl, or deuterated germyl; R.sup.4ais alkyl, silyl, germyl, aryl, or a deuterated analog thereof; a is an integer from 0-4; b and c are the same or different and are an integer from 0-3.

A compound of formula (7) is provided ##STR00001## wherein L.sub.4 is a linking group selected from the group consisting of: ##STR00002## provided that an asterisk (*) indicates the position bonding to the nitrogen atom of the carbazolyl group, R.sub.6 to R.sub.13 are independently a hydrogen atom, or a phenyl group, Ar.sub.17 is an unsubstituted phenylphenyl group, and Ar.sub.18 is a phenylphenyl group which may be substituted by a phenyl group or a naphthyl group, or a phenyl group which may be substituted by a naphthyl group.

A triarylamine derivative represented by a general formula (G1) given below is provided. Note that in the formula, Ar represents either a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group; α represents a substituted or unsubstituted naphthyl group; β represents either hydrogen or a substituted or unsubstituted naphthyl group; n and m each independently represent 1 or 2; and R.sup.1 to R.sup.8 each independently represent any of hydrogen, an alkyl group having 1 to 6 carbon atoms, or a phenyl group. ##STR00001##

There is provided an electroactive material having Formula I

##STR00001##

wherein: Q is the same or different at each occurrence and can be O, S, Se, Te, NR, SO, SO.sub.2, or SiR.sub.3; R is the same or different at each occurrence and can be hydrogen, alkyl, aryl, alkenyl, or alkynyl; and R.sup.1 through R.sup.6 are the same or different and can be hydrogen, alkyl, aryl, halogen, hydroxyl, aryloxy, alkoxy, alkenyl, alkynyl, amino, alkylthio, phosphino, silyl, —COR, —COOR, —PO.sub.3R.sub.2, —OPO.sub.3R.sub.2, or CN.

The present invention relates to compounds of the formula (1), (17) 18) or (20) and to the use thereof in electronic devices, and to electronic devices which contain these compounds. The invention furthermore relates to the preparation of the compounds of the formula (1), (17) 18) or (20) and to formulations contains one or more compounds of the formula (1), (17) 18) or (20).

The invention relates to pyrimidine derivatives according to formula (I), ##STR00001##
and to organic electroluminescent devices comprising said pyrimidine derivatives as electron transport material.

A light emitting device including an emissive material comprising quantum dots is disclosed. In one embodiment, the device includes a cathode, a layer comprising a material capable of transporting and injection electrons comprising an inorganic material, an emissive layer comprising quantum dots, a layer comprising a material capable of transporting holes, a layer comprising a hole injection material, and an anode. In certain embodiments, the hole injection material can be a p-type doped hole transport material. In certain preferred embodiments, quantum dots comprise semiconductor nanocrystals. In another aspect of the invention, there is provided a light emitting device wherein the device has an initial turn-on voltage that is not greater than 1240/λ, wherein λ represents the wavelength (nm) of light emitted by the emissive layer. Other light emitting devices and a method are disclosed.

Display unevenness in a display panel is suppressed. A display panel with a high aperture ratio of a pixel is provided. The display panel includes a first pixel electrode, a second pixel electrode, a third pixel electrode, a first light-emitting layer, a second light-emitting layer, a third light-emitting layer, a first common layer, a second common layer, a common electrode, and an auxiliary wiring. The first common layer is positioned over the first pixel electrode and the second pixel electrode. The first common layer has a portion overlapping with the first light-emitting layer and a portion overlapping with the second light-emitting layer. The second common layer is positioned over the third pixel electrode. The second common layer has a portion overlapping with the third light-emitting layer. The common electrode has a portion overlapping with the first pixel electrode with the first common layer and the first light-emitting layer provided therebetween, a portion overlapping with the second pixel electrode with the first common layer and the second light-emitting layer provided therebetween, a portion overlapping with the third pixel electrode with the second common layer and the third light-emitting layer provided therebetween, and a portion in contact with a top surface of the auxiliary wiring.

Disclosed are an oxide semiconductor-based transistor and a method of manufacturing the same. The oxide semiconductor-based transistor includes: a substrate provided with a bottom electrode; an insulator layer formed on the substrate; an active layer formed on the insulator layer; an electron transport layer formed on the active layer; and a top electrode formed on the electron transport layer. Since the oxide semiconductor-based transistor has a hybrid channel of PBD formed along with indium-zinc oxide (IZO), it is possible to improve mobility of electric charges and stability of electric devices and control a threshold value.

The invention relates to an organic light-emitting device (OLED) comprising at least: a first electrode; a second electrode; an organic light emissive layer arranged between said first electrode and said second electrode; and an organic charge transport layer arranged between said first electrode and said emissive layer, wherein i) the charge transport layer is patterned or provided with a periodic surface structure on a surface of the charge transport layer facing the emissive layer, and/or ii) an alignment layer which allows for charge transport to the emissive layer is provided between said charge transport layer and said emissive layer, which alignment layer promotes alignment of the optical dipoles of molecules of said light emissive layer towards a common preferred direction of the molecular axes. The use of the patterned or structured charge transport layer and/or the alignment layer provides improved light out coupling from the OLED layer stack, i.e. increased external quantum efficiency.