A compound comprising a first ligand L.sub.A of Formula I, ##STR00001##
is disclosed. In the structure of Formula I, ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring; Z.sup.1-Z.sup.4 are each independently C or N; at least two consecutive Z.sup.1-Z.sup.4 are C, and are fused to a structure of Formula II ##STR00002##
or Formula III ##STR00003##
Y.sup.1; Y.sup.1 and Y.sup.2 are each independently O, S, Se, CRR′, SiRR′, or GeRR′; each R.sup.A, R.sup.B, R.sup.C, R, and R′ is a hydrogen or a substituent; and any two substituents may be joined or fused together to form a ring. In the compound, L.sub.A is complexed to a metal M by the dashed lines in Formula I to form a five-membered chelate ring, and M has an atomic weight greater than 40. Organic light emitting devices and consumer products containing the compounds are also disclosed.

A composition is disclosed that includes a first compound capable of functioning as a host in an emissive layer of an OLED at room temperature; and a second compound that includes a ligand L.sub.A of Formula III ##STR00001##
where ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring; where R represents two adjacent substituents that are joined together to form a ring that is fused to ring B, and R has a structure of Formula IV ##STR00002##
or Formula V ##STR00003##
disclosed herein.

An opto-electronic device comprises light transmissive regions extending through it along a first axis to allow passage of light therethrough. The transmissive regions may be arranged along a plurality of transverse configuration axes. Emissive regions may lie between adjacent transmissive regions along a plurality of configuration axes to emit light from the device. Each transmissive region has a lateral closed boundary having a shape to alter at least one characteristic of a diffraction pattern exhibited when light is transmitted through the device to mitigate interference by such pattern. An opaque coating may comprise at least one aperture defining a corresponding transmissive region to preclude transmission of light therethrough other than through the transmissive region(s). The device can form a face of a user device having a body and housing a transceiver positioned to receive light along at least one light transmissive region.

A display device including a lower substrate having a display region including a plurality of pixel regions, and a peripheral region surrounding the display region; a plurality of pixel structures in the plurality of pixel regions on the lower substrate; an upper substrate on the plurality of pixel structures; a seal between the lower substrate and the upper substrate in the peripheral region; and a power supply voltage wiring between the seal and the lower substrate in the peripheral region, wherein the power supply voltage wiring partially overlaps the seal, and the power supply voltage wiring includes a plurality of first openings in a portion thereof that protrudes inwardly from the seal in a first direction extending from the peripheral region into the display region.

The present disclosure relates to an electroluminescence display having enhanced display quality by preventing external light from being reflected. An electroluminescence display according to the present disclosure comprises: a light shielding layer disposed on a substrate, and including a first metal layer and a second metal layer on the first metal layer; a first buffer layer covering the light shielding layer on the substrate; a gate line disposed on the first buffer layer and not overlapped with the light shielding layer, the gate line including a third metal layer and a fourth metal layer on the third metal layer; a passivation layer covering the gate line; a planarization layer on the passivation layer; and an emission element including a first electrode, an emission layer and a second electrode sequentially stacked on the planarization layer.

The present disclosure relates to an electroluminescence display having enhanced display quality by preventing external light from being reflected. An electroluminescence display according to the present disclosure comprises: a light shielding layer disposed on a substrate, and including a first metal layer and a second metal layer on the first metal layer; a first buffer layer covering the light shielding layer on the substrate; a gate line disposed on the first buffer layer and not overlapped with the light shielding layer, the gate line including a third metal layer and a fourth metal layer on the third metal layer; a passivation layer covering the gate line; a planarization layer on the passivation layer; and an emission element including a first electrode, an emission layer and a second electrode sequentially stacked on the planarization layer.

An organic vapor deposition device comprises a print head, comprising a source channel, in fluid communication with a flow of carrier gas and a quantity of organic source material configured to mix with the carrier gas, a nozzle having a deposition outlet, in fluid communication with the source channel, and a shutter configured at least to open and close the deposition outlet, wherein the print heat is configured to allow the flow of carrier gas and the organic source material exit the deposition outlet when the shutter is in an open position, and to prevent the flow of carrier gas and the organic source material from exiting the deposition outlet when the shutter is in a closed position. A method of manufacturing a device comprising an organic feature on a substrate is also described.

A display device includes a substrate, a semiconductor layer on the substrate, the semiconductor layer comprising a first semiconductor portion, a first insulating layer on the semiconductor layer, a first gate electrode on the first insulating layer and overlapping the first semiconductor portion, a scan line disposed on the first insulating layer and extending in a first direction, a second insulating layer on the first gate electrode and the scan line, a data line on the second insulating layer, and a first driving voltage line on the second insulating layer. The first driving voltage line may include a first portion extending in a second direction crossing the first direction, and a second portion expanding from the first portion in the first direction. The first portion may overlap the scan line, and the second portion may overlap the first gate electrode in a plan view to form a storage capacitor.

A display device includes a substrate, a semiconductor layer on the substrate, the semiconductor layer comprising a first semiconductor portion, a first insulating layer on the semiconductor layer, a first gate electrode on the first insulating layer and overlapping the first semiconductor portion, a scan line disposed on the first insulating layer and extending in a first direction, a second insulating layer on the first gate electrode and the scan line, a data line on the second insulating layer, and a first driving voltage line on the second insulating layer. The first driving voltage line may include a first portion extending in a second direction crossing the first direction, and a second portion expanding from the first portion in the first direction. The first portion may overlap the scan line, and the second portion may overlap the first gate electrode in a plan view to form a storage capacitor.

Provided are phenazine copolymers and methods of making and using phenazine copolymers. The phenazine copolymers may be made from one or more phenazine precursors and one or more co-monomer precursors, one or more phenazine precursors and one or more cross-linking precursors, or one or more phenazine precursors and both one or more cross-linking precursors and one or more co-monomer precursors. The phenazine copolymers may be used in/on cathodes. The cathodes may be used in a variety of devices, such as, for example, batteries or supercapacitors.