Samsung Sdi Co., Inc.

Samsung Electronics Co., Ltd.

Jung-Joon Park

Ho-Jin Kweon

Jae-Chul Um

Jun-Won Suh

Bum-Ki Baek

Sang-Ki Kwak

Min-Wook Park

Jang-Ho Yoon

Wan-Seog Oh

Su-Ho Song

Jin-Sung Kim

Young-min Choi

Se-Hwan Yu

Jeong-Young Lee

Sang-Jin Jeon

Han-Ju Lee

Kwon-Young Choi

Sang-jun Lee

Jong-Seob Kim

Jeong-Soon Shin

Sang-Moon Hwang

Meen-Seon Paik

Hak-Soo Kim

Young-Gyu Kim

Chan-Jung Kim

Kyeong-Min Jeong

Jae-Hou Nah

Sang-Won Lee

Gue-sung Kim

Dong-Hyeon Ki

Hyo-sug Lee

Jin-Uk Lee

Yong-nam Ham

Sung-Jae Cho

Masaki Koike

Kwang-Sik Kim

Dong-Min Im

Young-Bae Roh

Yasuaki Hiramura

Eui-Sun Hong

Kyung-Phil Lee

Il-Ki Woo

Gue-Sun Kim

A positive active material including a compound represented by LiMMeO. A surface part of a particle of the positive active material has a mole ratio [Me/M] (A) of element represented by Me to element represented by M in LiMMeOof 0.05&#x2266;A&#x2266;0.60; the entire particle has a mole ratio [Me/M] (B) of element represented by Me to element represented by M in LiMMeOof 0.003&#x2266;B&#x2266;0.012; and element represented by Me has a concentration difference of between two positions of less than or equal to about 0.02 wt % in an inner part of the particle. In LiMMeO, &#x2212;0.2&#x2266;x&#x2266;0.2, 0&#x3c;k&#x2266;0.05 M is one selected from Ni, Mn, Co, and a combination thereof, Me is one selected from Al, Mg, Ti, Zr, B, Ni, Mn, and a combination thereof, and M is not the same element as Me or does not include the same element as Me.

Positive active material for rechargeable lithium battery, method for preparing same and rechargeable lithium battery including same

A secondary battery having a simplified structure by which a lead of a safety device can be adhered to the battery includes an electrode unit having a positive electrode plate, a negative electrode plate and a separator disposed therebetween, a can having a bottom portion and made of aluminum or an aluminum alloy, the can in which the electrode unit and an electrolytic solution are accommodated and sealed, and a surface coating provided on at least an outer surface of the bottom portion of the can to which the lead is attached.

Secondary battery and manufacturing method thereof

A display substrate includes a base substrate, a conductive line on the base substrate, a switching element and a testing member. The switching element includes a first electrode formed on the semiconductor layer pattern and electrically connected to the conductive line, and a second electrode spaced apart from the first electrode and semiconductor layer pattern. The testing member includes a conductive line testing portion that is formed from the same layer as the conductive line and an electrode testing portion that is formed from the same layer as the first electrode. The conductive line testing portion and the electrode testing portion have substantially the same width as the conductive line and the first electrode, respectively. The testing member also includes a semiconductor layer testing portion. The display substrate lends itself to efficient manufacturing with reduced process time and cost.

Display substrate for easy detection of pattern misalignment

A positive active material for a rechargeable lithium battery is provided. The positive active material includes at least one compound selected from the group consisting of lithiated compounds, a metal oxide layer formed on a surface of the compound and metal oxide masses adhered on the metal oxide layer. The positive active material is produced by coating a compound with a metal alkoxide solution, an organic solution of a metal salt or an aqueous solution of a metal salt and heat-treating the coated compound. The compound is selected from the group consisting of lithiated compounds. Thereafter, the heat-treated compound is slow-cooled to 100 to 500&#xb0; C. and the cooled compound is quenched to room temperature.

Positive active material for rechargeable lithium battery and method of preparing same

An active material for a battery has a surface treatment layer that includes a conductive agent and at least one coating-element-containing compound selected from the group consisting of a coating-element-containing hydroxide, a coating-element-containing oxyhydroxide, a coating-element-containing oxycarbonate, a coating-element-containing hydroxycarbonate, and a mixture thereof.

Active material for battery and method of preparing the same

Disclosed in a positive active material for a lithium secondary battery including a compound represented by formula 1 and having a 10% to 70% ratio of diffracted intensity of diffraction lines in 2&#x3b8;=53&#xb0; (104 plane) with respect to diffracted intensity of diffraction lines in the vicinity of 2&#x3b8;=22&#xb0; (003 plane) in X-ray diffraction patterns using a CoK&#x3b1;-ray,LiCoOA&#x2003;&#x2003;(1)wherein, x is from 0.90 to 1.04, y is from 0 to 0.5, and A is selected from the group consisting of F, S and P.

Positive active material for lithium secondary battery and method of preparing same

A cathode active material for a lithium rechargeable battery is provided. The cathode active material is used for a lithium rechargeable battery containing a cathode, an anode, and an electrolytic solution. The cathode active material is composed of 0.5% by weight or less carbonate ion (CO) plus bicarbonate ion (HCO) and 0.1% by weight or less hydroxyl ion (OH). The swelling of lithium battery containing the cathode active material is substantially suppressed when is placed at 60&#xb0; C. or more.

Cathode active material for lithium rechargeable battery and lithium rechargeable battery using the same

A method of manufacturing a thin film transistor array panel is provided, which includes: forming a gate line on a substrate; depositing a gate insulating layer and a semiconductor layer in sequence on the gate line; depositing a lower conductive film and an upper conductive film on the semiconductor layer; photo-etching the upper conductive film, the lower conductive film, and the semiconductor layer; depositing a passivation layer; photo-etching the passivation layer to expose first and second portions of the upper conductive film; removing the first and the second portions of the upper conductive film to expose first and second portions of the lower conductive film; forming a pixel electrode and a pair of redundant electrodes on the first and the second portions of the lower conductive film, respectively, the redundant electrodes exposing a part of the second portion of the lower conductive film; removing the exposed part of the second portion of the lower conductive film to expose a portion of the semiconductor layer; and forming a columnar spacer on the exposed portion of the semiconductor layer.

Method of manufacturing a thin film transistor array panel

A liquid crystal display (LCD) includes a gate line, a data line, and a pixel electrode including first and second sub-pixel electrodes to which different voltages are applied. A thin film transistor is coupled with the gate line and the data line to apply a voltage to the pixel electrode, and a storage electrode partially overlaps with the first and second sub-pixel electrodes. The first sub-pixel electrode is arranged on all but one side of the second sub-pixel electrode, portions of a first side of the storage electrode overlap with the boundaries of the first and second sub-pixel electrodes, portions of a second side of the storage electrode protrude and partially overlap with the second sub-pixel electrode, and the storage electrode comprises a storage electrode extension, which protrudes from the second side of the storage electrode across the first sub-pixel electrode and overlaps with the second sub-pixel electrode.

Liquid crystal display device with storage electrode extension

A cathode active material is prepared by mixing a transition metal compound and a lithium compound in a molar ratio of 1:1.0-1:1.2 and thermally treating the mixture while supplying COand Oin a ratio of partial pressures ranging from 1:0.001-1:1,000, and a lithium battery utilizes the cathode active material. The lithium battery ensures safety against over-charging because an overflow of current may be effectively cut off without reducing discharging capacity and cycle life characteristics.

Carbon compound-adsorbed cathode active material and lithium battery using the same

The present invention relates to a negative active material for a lithium rechargeable battery and a method of preparing the same, and the negative active material prepared by coating a carbon source with a coating liquid, and drying the carbon source, and the negative active material comprises a core having a carbon source with surface-treatment layer formed on the surface of the core, the surface-treatment layer having at least one compound of coating element selected from the group cosnsisting of amorphous, semi crystalline, or crystalline hydroxides, oxyhydroxides, oxycarbonates, and hydroxidecarbonates. The present invention provides a negative active material coated with a surface-treatment layer of a coating-element-included hydroxide, a coating-element-included oxyhydroxide, a coating-element-included oxycarbonate, or a coating-element-included hydroxycarbonate, and thereby a battery having the negative active material has less change in thickness after expansion of the active material, that is, from 12.2% to 5.3%, and furthermore, cycle-life characteristics are improved (7% or more improvement at the 200th cycle) and voltage characteristics are improved (0.04 V or more improvement at the 200th cycle).

Negative active material for lithium rechargeable batteries and method of fabricating same

A lithium secondary battery exhibiting good mechanical properties and using a thin negative current collector is provided. The lithium secondary battery includes a positive electrode formed by coating lithium metal oxides on a positive current collector and a negative electrode formed by coating carbonaceous materials or SnOon a negative current collector. The negative current collector is made of a Cu-based alloy foil with a thickness of 20 &#x3bc;m or less and the Cu-based alloy foil includes at least one material selected from the group consisting of nickel, titanium, magnesium, tin, zinc, boron, chromium, manganese, silicone, cobalt, iron, vanadium, aluminum, zirconium, niobium, phosphorous, bismuth, lead, silver and misch metal. The lithium secondary battery further includes a separator interposed between the positive and negative electrodes and an electrolyte into which the positive and negative electrodes and the separator are immersed.

Lithium secondary battery

A non-aqueous electrolyte for a lithium secondary battery is provided. The electrolyte comprises a lithium salt, a non-aqueous solvent, and an organic compound selected from the group consisting of compounds represented by Formulae (1) to (6): wherein Rto Rare each independently selected from the group consisting of primary, secondary, and tertiary alkyl groups, alkenyl groups, and aryl groups; X is hydrogen or halogen; and n and m are numerical values ranging from 0 to 3.

Electrolyte for lithium secondary battery and lithium secondary battery comprising same

Growing community of inventors

Suwon-si, South Korea

Jung-Joon Park