公开(公告)号：US12153238B2

公开(公告)日：2024-11-26

申请号：US17439341

申请日：2020-03-03

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sung Man Cho ,  Mun Bo Ko ,  Ki Yong Kim ,  Yeon Ju Na ,  Eun Sol Cho

IPC: G02B5/30 ,  B32B7/12 ,  B32B23/20 ,  B32B27/30 ,  C08F20/06 ,  G02F1/1335 ,  B32B23/08

Abstract: A polarizing plate and an optical display device comprising the same are disclosed. The polarizing plate includes a polarizer comprising a zinc cation and a unit represented by the Formula 1, and the polarizing plate has a chrominance variation ΔE of about 5.2 or less, as calculated by Equation 1.

公开(公告)号：US20240387803A1

公开(公告)日：2024-11-21

申请号：US18786179

申请日：2024-07-26

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donggyu CHANG ,  Jongmin KIM

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525 ,  H01M4/62 ,  H01M10/0525

Abstract: Provided are a cathode active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery including a cathode including the cathode active material. The cathode active material includes: a secondary particle of a nickel-based active material, wherein the secondary particle including a plurality of primary particles, wherein the secondary particle includes a radial arrangement structure and an irregular porous structure, the radial arrangement structure is located closer to a surface of the secondary particle than the irregular porous structure, and a lithium fluoride-based compound is present on a surface of the nickel-based active material.

公开(公告)号：US20240385522A1

公开(公告)日：2024-11-21

申请号：US18610099

申请日：2024-03-19

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Taeksoo KWAK ,  Si-Kyun PARK ,  Hyungrang MOON ,  Jongpil HO ,  Gyeonghun PARK ,  Myoungsoo SONG ,  Jin-Hee BAE ,  Minsoo KIM ,  Seung HAN ,  Taeho KIM ,  Gyeong Ryeong BAK

IPC: G03F7/11 ,  C07F7/22 ,  G03F7/004 ,  H01L21/027

Abstract: A composition for removing edge beads from metal-containing resists, and a method of forming patterns including a step of removing edge beads using the composition are provided. The composition for removing edge beads includes an additive including at least one selected from among phosphoric acid, a phosphorous acid-based compound, and a hypophosphorous acid-based compound, and a carboxylic acid-based compound, and an organic solvent, where a mixed weight ratio of the at least one selected from among the phosphoric acid, the phosphorous acid-based compound, and the hypophosphorous acid-based compound to the carboxylic acid-based compound is about 9:1 to about 1.2:1.

公开(公告)号：US20240385252A1

公开(公告)日：2024-11-21

申请号：US18646840

申请日：2024-04-26

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Hee Soo YUN ,  Jee Ae SHIM ,  Sun Ho RYU ,  Joo Sick JUNG

IPC: G01R31/392 ,  G01R31/388 ,  H01M10/42

Abstract: The present disclosure relates to an apparatus and method for secondary battery life evaluation. A state of charge (SOC) and a normal deterioration area for charge/discharge current of a secondary battery are established, the secondary battery is charged within the normal deterioration area of the secondary battery, an accelerated charging current is reduced as the SOC increases, the secondary battery is discharged within the normal deterioration area of the secondary battery, and an accelerated discharging current is reduced as the SOC decreases. Steps are repeated until a state of health (SOH) of the secondary battery reaches a reference SOH. By evaluating the accelerated life of the secondary battery within a normal deterioration range, the second battery life evaluation is highly reliable.

公开(公告)号：US20240377747A1

公开(公告)日：2024-11-14

申请号：US18588606

申请日：2024-02-27

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Seil CHOI

IPC: G03F7/11 ,  C09D165/00 ,  H01L21/027 ,  H01L21/308 ,  H01L21/311 ,  H01L21/3213

Abstract: A hardmask composition, including a hardmask layer including a cured product of the hardmask composition, and a method of forming patterns using the hardmask layer including a cured product of the hardmask composition, the hardmask composition including a compound represented by Chemical Formula 1; and a solvent,

公开(公告)号：US12139642B2

公开(公告)日：2024-11-12

申请号：US17379133

申请日：2021-07-19

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Eui Rang Lee ,  Yoon Young Koo ,  Won Jung Kim ,  Hyeong Mook Kim ,  Tae Won Park ,  Jong Won Lee ,  Youn Jin Cho

IPC: C09G1/02 ,  A01N33/20 ,  A01N37/34 ,  H01L21/321

Abstract: A CMP slurry composition for polishing a tungsten pattern wafer and a method of polishing a tungsten pattern wafer, the CMP slurry composition including a solvent, the solvent being a polar solvent or a non-polar solvent; an abrasive agent; and a biocide, wherein the abrasive agent includes silica modified with a silane containing two nitrogen atoms or silica modified with a silane containing three nitrogen atoms, the biocide includes a compound of Formula 3:

公开(公告)号：US20240372093A1

公开(公告)日：2024-11-07

申请号：US18538987

申请日：2023-12-13

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Soonsung SUH ,  MyungSeop KIM ,  Youngsan KO ,  Minju LEE ,  Boram LEE ,  Kyuhwan CHOI

IPC: H01M4/58 ,  H01M4/62 ,  H01M10/052

Abstract: A positive electrode includes a positive electrode active material layer including a positive electrode active material of Chemical Formula 1 and carbon nanotubes with an average length of about 30 μm to about 80 μm; and a current collector supporting the positive electrode active material layer, wherein the positive electrode has an active mass density of greater than or equal to about 2.5 g/cc. LiaFe1-xMxPO4.  Chemical Formula 1 In Chemical Formula 1, 0.90≤a≤1.8, 0≤x≤0.7, and M is Mg, Co, Ni, Mn, or a combination thereof.

公开(公告)号：US20240372089A1

公开(公告)日：2024-11-07

申请号：US18773371

申请日：2024-07-15

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Mihwa YANG ,  Moonju CHO ,  Minjae KIM ,  Beomkwon KIM

IPC: H01M4/525 ,  H01M4/02 ,  H01M4/505 ,  H01M10/0525

Abstract: A lithium secondary battery includes a positive electrode including a positive electrode active material, a negative electrode, and an electrolyte located therebetween. The positive electrode active material includes a lithium cobalt-based active material and a lithium nickel cobalt-based active material, wherein the lithium cobalt-based active material is larger in size and amount than the lithium nickel cobalt-based active material, and the lithium nickel cobalt-based active material is a one-body positive electrode active material.

公开(公告)号：US20240372085A1

公开(公告)日：2024-11-07

申请号：US18777265

申请日：2024-07-18

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Changsu SHIN ,  Young-Min KIM ,  Soonho AHN ,  Jaehou NAH ,  Jaemyung KIM

IPC: H01M4/38 ,  H01M4/02 ,  H01M4/04 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/36 ,  H01M4/66 ,  H01M10/0525

Abstract: A negative active material composite includes a core and a coating layer around (surrounding) the core. The core includes amorphous carbon and silicon nanoparticles, the coating layer includes amorphous carbon, and an adjacent distance between the silicon nanoparticles is less than or equal to about 100 nm.

公开(公告)号：US20240372072A1

公开(公告)日：2024-11-07

申请号：US18383660

申请日：2023-10-25

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungho LEE ,  Youngugk KIM ,  Yookyung KIM ,  Sungwon JUNG ,  Jaehou NAH ,  Hyun SOH ,  Doori OH

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/38 ,  H01M4/583 ,  H01M10/052

Abstract: A negative electrode active material composite, including an amorphous carbon matrix, and silicon nanoparticles and crystalline carbon fibers dispersed in the amorphous carbon matrix, the silicon nanoparticles being in contact with a portion or all of the crystalline carbon fibers in the amorphous carbon matrix.