Abstract: A positive active material, a method of preparing the same, and a lithium secondary battery including the positive active material.

Abstract: A phosphor composition for a display device, including a phosphor represented by Formula 1: Y3-x-k-zCekMzM?xAla-yM?yO(1.5a+4.5)??(1). In Formula 1, M includes at least one of Tb, Dy, and Eu, M? includes at least one of Sc, Gd, In, and La, M? includes at least one of Ga, Sc, and In, and x, y, z, k, and a represent molar ratios and satisfy the relations: 0.0?x<3.0, 0.0?y?7.0, 0.0<k<0.1, 0.0<z<0.5, 4.0?a?7.0, a-y?0.0, x+k+z?3.0, and 0.01?z/k?20.

Abstract: Provided are a phosphor used in a PDP, which is a compound represented by Formula 1 below and a PDP including a phosphor layer comprising the phosphor. (Y1-x-yGdxTby)AlrQ3-r(BO3)4 ??Formula 1 where 0<x?1, 0<y?1, Q is Sc, In, or Ga, and 0?r<3. When the phosphor is used to form a green phosphor layer of a PDP, the luminance saturation problem of a conventional green phosphor can be overcome. In addition, a PDP including a phosphor layer comprising the phosphor has a wider color reproduction range and no reduction in luminance according to the mixing ratio of each phosphor contained in the phosphor compared with a conventional phosphor used in a PDP. Therefore, a PDP including a phosphor layer comprising the phosphor can have far superior image qualities.

Abstract: A green phosphor including a compound represented by Formula 1 (Y3-xMx) (Al5-yM?y)O12:Cez and a pigment. The green phosphor having the compound represented by Formula 1 and a pigment has a shorter decay time than conventional phosphors, and thereby confers excellent luminescence characteristics and color purity. A display panel including the green phosphor 1 is also provided herein.

Abstract: Disclosed is a medical instrument. The medical instrument includes a main body including at least one of an operation part and a display part, a cart including a desk on which the main body is positioned, a front detachable member disposed on the desk and adapted to attach and detach a front portion of the main body to/from the desk, and at least one rear detachable member disposed on the desk and adapted to attach and detach a rear portion of the main body to/from the desk and elastically support the rear portion of the main body.

Abstract: A blue phosphor, a display device including the same, and associated methods, the blue phosphor including BaMgAl10O17:Eu (BAM) phosphor particles having a surface component and an internal component, wherein an aluminum/barium (Al/Ba) molar ratio of the surface component of the phosphor particles is 1.1 to about 1.4 times the Al/Ba molar ratio of the internal component of the phosphor particles, and the Al/Ba molar ratios are continuously variable between the internal component and the surface component.

Abstract: Disclosed is a medical instrument. The medical instrument includes a main body including at least one of an operation part and a display part, a cart including a desk on which the main body is positioned, a front detachable member disposed on the desk and adapted to attach and detach a front portion of the main body to/from the desk, and at least one rear detachable member disposed on the desk and adapted to attach and detach a rear portion of the main body to/from the desk and elastically support the rear portion of the main body.

Abstract: Disclosed is an ultrasonic diagnostic device. The ultrasonic diagnostic device includes a cart, a desk formed on an upper portion of the cart, and including at least one detachable member, and a main body mounted on the desk, including at least one of a button input part and a screen display part, and engaged with the detachable member.

Abstract: Disclosed is a medical instrument. The medical instrument includes a main body including at least one of an operation part and a display part, and a detachable lever arranged on a rear portion of the main body, a cart including a desk on which the main body is positioned, a front detachable member disposed on the desk and adapted to attach and detach a front portion of the main body to/from the desk, and a rear detachable member disposed on the desk and adapted to attach and detach a rear portion of the main body to/from the desk and fix the main body to the desk by the detachable lever.

Abstract: Disclosed herein is a portable ultrasonic diagnostic apparatus. The ultrasonic diagnostic apparatus includes a body part, a handle coupled to the body part and having a curved shape, and a display unit coupled to the handle. The handle has a curved shape to improve close contact feelings with an operator's palm, so that an operator does not experience palm fatigue even after extended use.

Abstract: A green phosphor including a first phosphor represented by Formula 1: Ya-x-kCekM?xAlbO3/2(a+b)??(1). In Formula 1, M? includes at least one of Sc, Gd, In, Lu, La, and x, k, a, and b satisfy the relations 0.0?x?5.0, 0.0<k<0.1, 0.5?a?5.0, 0.5?b?7.0, and a-x-k >0.

Abstract: Phosphor mixtures for phosphor layers of plasma display devices are provided. The phosphor mixture includes a first compound selected from compounds represented by Gd1-yTbyAl3(BO3)4 (0.05?Y?0.8) and compounds represented by YBO3:Tb3+, and a second compound represented by Zn(Ga1-XAlx)2O4:Mn2+ (0.2?X?0.8). The first compound and second compound are mixed in a weight ratio ranging from about 3:7 to about 6:4. The inventive phosphor mixtures exhibit reduced decay times, thereby increasing color reproducibility and improving brightness characteristics.

Abstract: A plasma display panel including phosphor layers having zeta potentials of the same polarity. In one embodiment, the phosphor layers have positive zeta potentials and have a uniform discharge characteristic and a uniform lifetime, and an address discharge of the plasma display panel can be easily caused, and damage on phosphor layers of the plasma display panel due to positive charges during a sustain discharge of the plasma display panel can be reduced.

Abstract: A green phosphor, including a first phosphor represented by Formula 1: (Y3-xCex)aAlbOc??(1), wherein x, a, b, and c satisfy the relations: 0<x?1, 0.5?a?3, 3?b?9, and 2c=9a+3b; and a second phosphor including at least one of: Zn2SiO4:Mn, YBO3:Tb, Y(1-x1)Gdx1Al3(BO3)4:Tb, wherein x1 satisfies the relation 0?x1?1, Li2Zn(Ge,?)zO8:Mn, wherein ? includes Al or Ga, and z satisfies the relation 3?z?4, BaMgAl10O17:Mn, BaMgAl12O19:Mn, and Zn(Ga1-x2Alx2)2O4:Mn, wherein x2 satisfies the relation 0.2?x2?0.8.

Abstract: A phosphor composition including a first phosphor represented by Formula 1: Ba1?bMg1?aAl10O17:Mna,Eub ??(1). In Formula 1, a and b satisfy the relations: 0.05?a?0.4, and 0.006?b<0.05.

Abstract: A phosphor composition for a display device, including a phosphor represented by Formula 1: Y3-x-k-zCekMzM?xAla-yM?yO(1.5a+4.5) ??(1). In Formula 1, M includes at least one of Tb, Dy, and Eu, M? includes at least one of Sc, Gd, In, and La, M? includes at least one of Ga, Sc, and In, and x, y, z, k, and a represent molar ratios and satisfy the relations: 0.0?x<3.0, 0.0?y?7.0, 0.0<k<0.1, 0.0<z<0.5, 4.0?a?7.0, a-y?0.0, x+k+z?3.0, and 0.01?z/k?20.

Abstract: The phosphor composition including a first phosphor represented by Formula 1: Y3?x?kCekM?xAla?yM?yO(1.5a+4.5)??(1). In Formula 1, M? includes at least one of Sc, In, and La, M? includes at least one of Ga, Sc, and In, and x, y, k, and a satisfy the relations: 0.0?x<3.0, 0.0<y?7.0, 0.0<k<0.1, 4.0?a?7.0, a?y?0.0, and x+k?3.0.

Abstract: Provided are a phosphor used in a PDP, which is a compound represented by Formula 1 below and a PDP including a phosphor layer comprising the phosphor. (Y1-x-yGdxTby)AlrQ3-r(BO3)4 Formula 1 where 0<x?1, 0<y?1, Q is Sc, In, or Ga, and 0?r<3. When the phosphor is used to form a green phosphor layer of a PDP, the luminance saturation problem of a conventional green phosphor can be overcome. In addition, a PDP including a phosphor layer comprising the phosphor has a wider color reproduction range and no reduction in luminance according to the mixing ratio of each phosphor contained in the phosphor compared with a conventional phosphor used in a PDP. Therefore, a PDP including a phosphor layer comprising the phosphor can have far superior image qualities.

Abstract: A phosphor with an amorphous layer includes a core phosphor and an amorphous oxide layer having a thickness of about 1 to about 30 nm on the core phosphor, wherein the phosphor with the amorphous layer exhibits a zeta potential of about 10 to about 50 mV.

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.