Abstract: The present disclosure relates to an organic light emitting diode and an organic light emitting device including the same. The organic light emitting diode includes a first electrode; a second electrode facing the first electrode; and a first blue emitting material layer including a first compound and a second compound and positioned between the first and second electrodes, wherein the first compound is represented by Formula 1, and the second compound is represented by Formula 3. According to an aspect of the present disclosure, it is allowed to provide an OLED and an organic light emitting device having high emitting efficiency and/or improved lifespan.

Abstract: A current control integrated circuit of a backlight device for display includes a buffer configured to receive a column signal; a plurality of driving current controllers configured to receive the column signal outputted from the buffer and row signals corresponding to a plurality of light emitting blocks of a control unit, and control driving currents for light emission of the light emitting blocks, in response to the column signal and the row signals; and a memory unit, wherein an offset voltage of the buffer is controlled by offset correction data stored in the memory unit.

Abstract: A display device includes first and second electrodes, light-emitting elements on the first and second electrodes, data lines extending from a pad area to a display area, connection wirings spaced apart from the data lines and extending from the pad area to a non-display area on respective sides of the display area, first pads overlapping the data lines in the pad area, and second pads overlapping the connection wirings, wherein the connection wirings include a first connection wiring overlapping a second pad, a second connection wiring not overlapping the second pad and overlapping the first connection wiring in the non-display area, and a third connection wiring overlapping the first connection wiring and electrically connected to the second pad, wherein the first and third connection wirings overlap each other in the pad area, and the first, second, and third connection wirings overlap each other in the non-display area.

Abstract: A positive active material and a lithium battery including the positive active material. The positive active material includes a large diameter active material and a small diameter active material, wherein the small diameter active material includes a Ni-based lithium-transition metal composite oxide and a coating layer including a Mn-containing compound on at least a portion of the surface thereof.

Abstract: A nickel composite hydroxide for a lithium secondary battery represented by Formula 1 below with a small compositional variation in M: Ni1-x-y-zCoxMyMnz(OH)2??(1), where, in Formula 1, M is aluminum (Al), zirconium (Zr), titanium (Ti), magnesium (Mg), silicon (Si), or zinc (Zn), x is a number from 0 to 0.5, y is a number from 0.01 to 0.2, and z is a number from 0 to 0.5.

Abstract: A positive active material and a lithium battery including the positive active material. The positive active material includes a large diameter active material and a small diameter active material, wherein the small diameter active material includes a Ni-based lithium-transition metal composite oxide and a coating layer including a Mn-containing compound on at least a portion of the surface thereof.

Abstract: A positive active material for a lithium secondary battery is a compound represented by Formula 1 and is in a form of primary particles having a particle diameter in a range of 80 to 400 nm. Formula 1: LiaNixCoyMnzM1-x-y-zO2, wherein metal M is selected from the group of B, Cr, V, Ti, Fe, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, and W, 1.0?a?1.2, 0.9?x?0.95, 0.1?y?0.5, 0.0?z?0.7, and 0.0<1?x?y?z?0.3.

Abstract: A nickel composite hydroxide for a lithium secondary battery represented by Formula 1 below with a small compositional variation in M: Ni1-x-y-zCoxMyMnz(OH)2??(1), where, in Formula 1, M is aluminum (Al), zirconium (Zr), titanium (Ti), magnesium (Mg), silicon (Si), or zinc (Zn), x is a number from 0 to 0.5, y is a number from 0.01 to 0.2, and z is a number from 0 to 0.5.

Abstract: The present invention provides a green light-emitting phosphor for a light-emitting device excited by vacuum ultraviolet rays, a light-emitting device, and a method of preparing the same. The green light-emitting phosphor is represented by the formula AxB4-2xO6-2x:Mny, wherein A is Mg, Zn, Ca, or Li, B is Al or Ga, 0.6?x?1.4, and 0.01?y?0.1. The phosphor has excellent brightness, color purity, and discharging characteristics, and a short decay time. In one embodiment, the phosphor has a stable spinel structure, and is stable with regard to external influence such as heat, ion bombardment, and vacuum ultraviolet rays. Longer-lived light-emitting devices are also disclosed.

Abstract: Phosphor coated with wide bandgap metal oxide which can be used for a plasma display panel (PDP) has a surface that is coated with a continuous, thin film of wide bandgap metal oxide. In preparing the phosphor coated with wide bandgap metal oxide, a pH of the wide bandgap metal oxide precursor solution containing an organic solvent and water is adjusted to 0.1–10 and heated under a reflux, thereby obtaining a metal hydroxide gel. The wide bandgap metal hydroxide gel is made to contact a phosphor for a PDP, thereby obtaining the gel-coated phosphor. The gel-coated phosphor is then dried and sintered.

Abstract: Provided are a phosphor for a plasma display panel (PDP) including: a zinc silicate-based phosphor represented by the formula of Zn2SiO4:Mn; and a continuous crystalline metal oxide layer composed of yttrium oxide (Y2O3) formed on the zinc silicate-based phosphor, and a PDP having a phosphor layer composed of the phosphor. The phosphor for a PDP has a continuous crystalline layer composed of a positively charged metal oxide such as yttrium oxide, and thus has better surface properties. The metal oxide layer acts as a protecting layer to prevent deterioration of the phosphor due to ion bombardment. When the phosphor is used to manufacture a green phosphor layer for a PDP, a green discharge voltage can be controlled to levels of red and blue colors due to a better surface charge property and a poor specific gradation discharge problem can be resolved.

Abstract: A phosphor for a plasma display panel (PDP) has a decay time of about 1 ms or less when a Xe concentration is about 10 wt % to about 30 wt % based on the total weight of a discharge gas. A phosphor composition includes the same and a PDP includes a phosphor layer comprising the phosphor or the phosphor composition. When the phosphor or the phosphor composition are used, a low gray scale and low discharge problem due to a green phosphor of a PDP may be solved, a permanent afterimage due to a green phosphor is reduced, and a color reproduction range is significantly broadened compared to a conventional green phosphor of a PDP. In addition, the circuit of the PDP is simplified since colors are not individually subjected to gamma correction but are corrected using a single white gamma. Furthermore, the contrast in a light room is also improved due to the use of phosphor powders with color.

Abstract: A blue phosphor can be used for a plasma display panel. The blue phosphor is formed with a core phosphor and a europium coating layer over the core phosphor. The core phosphor is expressed by the following formula 1: (Ba1-xEux)O.MgyO(Al2O3)z??(1) In the formula, 0.005?x?0.05, 1?y?2, and 5?z?7. The europium coating layer includes europium divalent ions, Eu2+. In a method of making the blue phosphor, the core phosphor is mixed with a europium containing compound such as Eu2O3, and the mixture is thermally treated to form the europium coating layer.

Abstract: The present invention provides a green light-emitting phosphor for a light-emitting device excited by vacuum ultraviolet rays, a light-emitting device, and a method of preparing the same. The green light-emitting phosphor is represented by the formula AxB4-2xO6-2x:Mny, wherein A is Mg, Zn, Ca, or Li, B is Al or Ga, 0.6?x?1.4, and 0.01?y?0.1. The phosphor has excellent brightness, color purity, and discharging characteristics, and a short decay time. In one embodiment, the phosphor has a stable spinel structure, and is stable with regard to external influence such as heat, ion bombardment, and vacuum ultraviolet rays. Longer-lived light-emitting devices are also disclosed.

Abstract: Phosphor coated with wide bandgap metal oxide which can be used for a plasma display panel (PDP) has a surface that is coated with a continuous, thin film of wide bandgap metal oxide. In preparing the phosphor coated with wide bandgap metal oxide, a pH of the wide bandgap metal oxide precursor solution containing an organic solvent and water is adjusted to 0.1-10 and heated under a reflux, thereby obtaining a metal hydroxide gel. The wide bandgap metal hydroxide gel is made to contact a phosphor for a PDP, thereby obtaining the gel-coated phosphor. The gel-coated phosphor is then dried and sintered.