Abstract: An electronic device according to various embodiments of the present invention may comprise: a housing comprising a first surface facing in a first direction and a second surface facing in a second direction that is opposite to the first direction, the first surface comprising an at least partially transparent part and at least one opening formed adjacent to the at least partially transparent part; a camera positioned inside the housing, the camera comprising an image sensor facing in the first direction through the at least partially transparent part of the housing; and an acoustic component arranged between the first surface and the second surface, the acoustic component comprising a vibration plate configured to generate a sound such that the same moves in at least one direction selected from the first and second directions, a first passage formed in a third direction that is substantially perpendicular to the first direction such that the generated sound passes through the same, and a second passage forme

Abstract: The present invention provides an external additive for toner, selected from the group consisting of tin oxide fine particles, complex tin oxide fine particles, and a mixture of the same fine particles, wherein the fine particles are (?) charged fine particles having an energy band gap of 3.2 to 3.6 eV, an electronegativity value (?) of 15 to 18, and a Blow-Off charge amount (uC/g) of ?100 to ?150. The external additive for toner of the present invention can: replace nano-sized titanium dioxide which has been conventionally used as an external additive for toner; guarantee general consumers using image devices as well as workers in the image industry safety from the harmful influences that may be generated upon exposure to the nano-sized titanium dioxide detached from the surface of a toner in use; and be safe for the human body.

Abstract: A positive active material for a rechargeable lithium battery including a lithium-nickel cobalt manganese composite metal oxide; and 0.18 to 0.25 wt % of sulfur is provided.

Abstract: A positive active material for a rechargeable lithium battery including a lithium-nickel cobalt manganese composite metal oxide; and 0.18 to 0.25 wt % of sulfur is provided.

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 for a plasma display panel (PDP), a green phosphor composition including the same, and a PDP including the same, the green phosphor including a green phosphor represented by Formula 1: (Lu3-x,Cex)Al5O12, wherein in Formula 1, x satisfies the relation 0<x<3.

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.

Abstract: A phosphor compliant with formula (1) below and a perovskite structure containing samarium (Sm): MTiO3: (A, B)  (1) where M is an alkali earth metal, A is an element selected from the group consisting of cerium (Ce), praseodymium (Pr), europium (Eu), terbium (Tb), and thulium (Tm), and B is a Group IIIA element of the periodic table. The phosphor has excellent luminance and lifespan while not containing S in its host matrix, and is also environmentally safe since it does not contain cadmium that is harmful to the environment. Therefore, the phosphor can be advantageously utilized for various display applications including vacuum fluorescent displays (VFDs) and field emission displays (FEDs).

Abstract: A low-voltage excited red phosphor of the present invention has a matrix including an oxide of an alkaline earth metal and titanium and doping elements including a rare-earth element, a group 13 element, and Zn. The phosphor has an improved lifetime and high brightness.

Abstract: A phosphor having longer lifespan which includes sulfur and has a perovskite structure. The phosphor further satisfies the following formula: MTiO3:A where M is an alkaline earth metal and A is a rare earth element. The sulfur-containing phosphor shows good luminance and lifespan characteristics compared to existing SrTiO3 based phosphors, without containing cadmium that is harmful to the environment. Therefore, the phosphor is advantageously utilized for various display applications including vacuum fluorescent displays (VFDs) and field emission displays (FEDs).

Abstract: A phosphor having increased luminance and lifespan which includes a halide flux of the Group 1 element of the periodic table has a perovskite structure and satisfies the following formula: MTiO3: (A,B) where M is an alkaline earth metal, A is a rare earth element, and B is a Group 13 element of the periodic table. The halide flux-containing phosphor shows good luminance and lifespan characteristics compared to conventional phosphors without using sulfur and environmentally harmful cadmium in a host matrix. Therefore, the phosphor is advantageously utilized for various display applications including vacuum fluorescent displays (VFDs) and field emission displays (FEDs).

Abstract: A low-voltage excited red phosphor of the present invention has a matrix including an oxide of an alkali earth metal and titanium and doping elements including a rare-earth element, a group 13 element, and Zn. The phosphor has an improved lifetime and high brightness.

Abstract: A phosphor having longer lifespan which includes sulfur and has a perovskite structure.

Abstract: A phosphor having increased luminance and lifespan which includes a halide flux of the Group 1 element of the periodic table has a perovskite structure and satisfies the following formula:

Abstract: A phosphor compliant with formula (1) below and a perovskite structure containing samarium (Sm):

Abstract: A display device includes a backlight having a main emitting peak in the region of 380-420 nm, a polarizer for selecting light having prescribed direction among the light emitted from a backlight source and an analyzer for receiving the selected light, a pair of electrodes provided between the polarizer and analyzer, optoelectronic material such as liquid crystal materials and PLZT provided between the electrodes, and a phosphor layer including phosphors which can be stimulated by exposure to the light from the backlight source. The display device has an increased viewing angle and improved luminance.