Samsung Sdi Co., Inc.

Gyeong-Jae Heo

Ji-Hyun Kim

Hyun-Deok Lee

Mi-Ran Song

Min-Ju Kim

Do-Hyung Park

Yong-Chan You

Jin-Hyoung Seo

Sun-Hwa Kwon

Jae-Woo Bae

Kyu-Chan Park

Yong-Chul Park

Yoon-Chang Kim

Seon-Young Kwon

Jay-Hyok Song

Yu-Mi Song

Young-Hun Lee

Ick-Kyu Choi

Young-ki Kim

Ui-Song Do

Young-Suk Cho

Sang-Hyuk Lee

Byung-Kyun Kim

Hui-Young Ku

Yoo-Jung Lee

Hee-Seong Jeong

Gun-Shik Kim

Jun-Sik Oh

Jae-Kwang Ryu

Myun-Gi Shim

Na-Leum Yoo

Do-Yu Kim

Sang-Yeol Hur

Yong-Seon Kim

Kyu-Won Jung

Dong-gun Moon

Jong-Hoon Shin

Hun-Soo Kim

Jae-Dong Byun

Sun-Youn Ryou

Ju-Eel Mun

Dong-Gun Moom

Ji-hyun Kim

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.

Positive active material and positive electrode and lithium battery including positive active material

A cathode active material including: a lithium manganese oxide of which primary particles has a diameter of 1 &#x3bc;m or more and which has a spinel structure in which an X-ray diffraction (XRD) peak intensity ratio of I(111)/I(311) is 1.0 or more; and a boron element disposed at least one position selected from the group consisting of inside the primary particles and on surfaces of the primary particles.

Cathode active material having manganese oxide and boron, cathode and lithium battery including cathode active material, and method of preparing the cathode active material

A nickel composite hydroxide for a lithium secondary battery represented by Formula 1 below with a small compositional variation in M:NiCoMMn(OH)&#x2003;&#x2003;(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.

Lithium composite oxide for a lithium secondary battery and positive electrode for a lithium secondary battery including the lithium composite oxide

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

Positive active material, method of preparing the same, and lithium battery including the positive active material

A white phosphor including: 40 to 50 parts by weight of a blue phosphor selected from the group consisting of ZnS:(Ag,Cl), ZnS:(Ag,Al), ZnS:(Ag,Al,Cl), and a combination thereof; 20 to 30 parts by weight of a green phosphor (SrCa)GaS:Eu (0&#x2266;x&#x3c;0.2); and 20 to 30 parts by weight of a red phosphor selected from the group consisting of YO:Eu, YO:(Eu,Tb), YOS:Eu, YOS:(Eu,Tb), and combinations thereof. The white phosphor can be included in a light emission device. The light emission device can be included in a liquid crystal display.

White phosphor, light emission device including the same, and liquid crystal display device including the light emission device as backlight unit

A phosphor composition including a first phosphor represented by Formula 1:BaMgAlO:Mn,Eu&#x2003;&#x2003;(1). In Formula 1, a and b satisfy the relations: 0.05&#x2266;a&#x2266;0.4, and 0.006&#x2266;b&#x3c;0.05.

Phosphor composition and display device including the same

A light emission device including: a light emission panel including at least two emissive regions spaced apart from each other and a non-emissive region between the emissive regions; and a light diffuser located in front of the light emission panel, the light diffuser including at least two first diffusion parts corresponding to the emissive regions and a second diffusion part corresponding to the non-emissive region, wherein the second diffusion part has diffusion transmittance that is greater than diffusion transmittance of the first diffusion parts.

Light emission device and display device using the light emission device as a light source

The phosphor composition including a first phosphor represented by Formula 1:YCeM'AlM&#x2033;O&#x2003;&#x2003;(1). In Formula 1, M&#x2032; includes at least one of Sc, In, and La, M&#x2033; includes at least one of Ga, Sc, and In, and x, y, k, and a satisfy the relations: 0.0&#x2266;x&#x3c;3.0, 0.0&#x3c;y&#x2266;7.0, 0.0&#x3c;k&#x3c;0.1, 4.0&#x2266;a&#x2266;7.0, a&#x2212;y&#x2267;0.0, and x+k&#x2266;3.0.

A phosphor composition for a display device, including a phosphor represented by Formula 1:YCeMM'AlM&#x2033;O&#x2003;&#x2003;(1). In Formula 1, M includes at least one of Tb, Dy, and Eu, M&#x2032; includes at least one of Sc, Gd, In, and La, M&#x2033; 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&#x2266;x&#x3c;3.0, 0.0&#x2266;y&#x2266;7.0, 0.0&#x3c;k&#x3c;0.1, 0.0&#x3c;z&#x3c;0.5, 4.0&#x2266;a&#x2266;7.0, a-y&#x2267;0.0, x+k+z&#x2266;3.0, and 0.01&#x2266;z/k&#x2266;20.

Phosphor composition for display device

A red phosphor, including a first phosphor represented by Formula 1(YM)O:Eu&#x2003;&#x2003;(1). In Formula 1, M includes at least one of Gd, La, Sc, and Lu, and x1 and y1 satisfy the relations: 0.00&#x2266;x1&#x2266;0.8 and 0.025&#x2266;y1&#x2266;0.20.

Red phosphor and display device including the same

A white phosphor, and a light emission device including the white phosphor, and a display device including the white phosphor, the white phosphor including 40 to 45 parts by weight of a blue phosphor selected from the group consisting of ZnS:(Ag,Cl), ZnS:(Ag,Al), ZnS:(Ag,Al,Cl), and combinations thereof; 30 to 40 parts by weight of a green phosphor selected from the group consisting of ZnS:(Cu,Al), ZnS:(Cu,Au,Al), and combinations thereof; and 20 to 25 parts by weight of a red phosphor selected from the group consisting of YO:Eu, YO:(Eu,Tb), YOS:Eu, YOS:(Eu,Tb), and combinations thereof. The white phosphor shows a color temperature of from 12,000K and 14,000K.

White phosphor, light emission device including the same, and display device

A white phosphor, a light emission device including the same, and a liquid crystal display (LCD) including the light emission device as a backlight unit. The white phosphor includes: 40 to 50 parts by weight of a blue phosphor selected from the group consisting of ZnS:(Ag,Cl), ZnS:(Ag,Al), ZnS:(Ag,Al,Cl), and a combination thereof; 23 to 36 parts by weight of a green phosphor including (SrCa)GaS:Eu (0&#x2266;x&#x3c;0.2) and a compound selected from the group consisting of ZnS:(Cu,Al), ZnS:(Cu,Au,Al), and a combination thereof; and 20 to 30 parts by weight of a red phosphor selected from the group consisting of YO:Eu, YO:(Eu,Tb), YOS:Eu, YOS:(Eu,Tb), and a combination thereof.

A display device is provided. The display device includes a display panel comprising a display surface configured to display an image thereon, the display surface having an edge; a light source spaced apart from the display panel to form a space therebetween and configured to emit light to the display panel, wherein the display panel is configured to generate image on the display surface using the light from the light source; and a reflective surface arranged so as to reflect light emitted from the light source and to direct the reflected light to the edge.

Display device with reflective surface for reflecting light to edges of display area

Growing community of inventors

Suwon-si, South Korea

Gyeong-Jae Heo