Abstract: A condensed cyclic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: A composition including a first compound represented by Formula 1 and a second compound represented by Formula 2: Ar1-(L1)a1-Ar2??Formula 1 Ar11-(L11)a11-Ar12??Formula 2 wherein Ar1, Ar2, Ar11, Ar12, L1, L11, a1, and a11 are the same as described in the specification.

Abstract: A condensed cyclic compound represented by Formula 1: Ar1-L1-L2-Ar2??Formula 1 wherein in Formula 1, Ar1, Ar2, L1, and L2 are the same as described in the specification.

Abstract: A composition including a donor compound and an acceptor compound, wherein the donor compound and the acceptor compound form an exciplex having characteristics described in the specification.

Abstract: A thin film including a combination of a donor compound and an acceptor compound, and a phosphorescent dopant, wherein the donor compound and the acceptor compound form an exciplex having characteristics described in the specification.

Abstract: A condensed cyclic compound represented by Formula 1, comprising at least one cyano (—CN) group: wherein, in Formula 1, groups and variables are the same as described in the specification.

Abstract: An organic electro-luminescent display includes an anode electrode disposed in a pixel region, on a substrate, a bank adjacent to an edge of the anode electrode, on the substrate, to define the pixel region, a hole injection layer on the anode electrode, to be separated from a sidewall of the bank by a first distance, a hole transport layer and an emissive layer sequentially disposed on the hole injection layer, in the pixel region, and a cathode electrode disposed on the emissive layer.

Abstract: A condensed cyclic compound represented by Formula 1: wherein in Formula 1, groups X1 to X3 and X11 to X18 are the same as described in the specification.

Abstract: An ultrasound system, a method, and a computer-readable storage medium for providing a Doppler image of blood flow and a Doppler image of tissue movement are disclosed. The ultrasound system includes an ultrasound probe, a processor, and a display section. The ultrasound probe is configured to transmit ultrasound signals into a target object having blood flow and tissue, and receive ultrasound echo signals reflected from the target object. The processor is configured to acquire ultrasound data based on the ultrasound echo signals, generate a first Doppler image of the blood flow based on the ultrasound data, perform down-sampling on the ultrasound data to obtain down-sampled ultrasound data, and generate a second Doppler image indicating movement of the tissue based on the down-sampled ultrasound data. The display section is configured to display the first and second Doppler images.

Abstract: An organic electro-luminescent display includes an anode electrode disposed in a pixel region, on a substrate, a bank adjacent to an edge of the anode electrode, on the substrate, to define the pixel region, a hole injection layer on the anode electrode, to be separated from a sidewall of the bank by a first distance, a hole transport layer and an emissive layer sequentially disposed on the hole injection layer, in the pixel region, and a cathode electrode disposed on the emissive layer.

Abstract: An inkjet printing apparatus according to example embodiments may include a flow channel plate including an ink inlet for introducing ink, a pressure chamber containing the introduced ink, and a nozzle connected to the pressure chamber and configured to eject ink. A piezoelectric voltage applier may apply a piezoelectric driving voltage to the piezoelectric actuator in such a way that the volume of the pressure chamber is reduced so as to eject an ink droplet. An electrohydrodynamic voltage applier may apply a first electrohydrodynamic driving voltage and a second electrohydrodynamic driving voltage to the electrohydrodynamic actuator. The first electrohydrodynamic driving voltage may generate a jet from the ink droplet such that the jet is ejected towards a printing medium, and the second electrohydrodynamic driving voltage (which has an opposite polarity to that of the first electrohydrodynamic driving voltage) may restore the ink droplet to the nozzle.

Abstract: An inkjet printing apparatus according to example embodiments may include a flow channel plate including an ink inlet for introducing ink, a pressure chamber containing the introduced ink, and a nozzle connected to the pressure chamber and configured to eject ink. A piezoelectric voltage applier may apply a piezoelectric driving voltage to the piezoelectric actuator in such a way that the volume of the pressure chamber is reduced so as to eject an ink droplet. An electrohydrodynamic voltage applier may apply a first electrohydrodynamic driving voltage and a second electrohydrodynamic driving voltage to the electrohydrodynamic actuator. The first electrohydrodynamic driving voltage may generate a jet from the ink droplet such that the jet is ejected towards a printing medium, and the second electrohydrodynamic driving voltage (which has an opposite polarity to that of the first electrohydrodynamic driving voltage) may restore the ink droplet to the nozzle.