Samsung Sdi Co., Inc.

Samsung Display Co., Ltd.

Jiyoon Kim

Jongmin Kim

Jinhwa Kim

Pilsang Yun

Donggyu Chang

Jangsuk Hyun

Kwanghwan Cho

Kitae Kim

Changhee Lee

Wooyoung Yang

Donghoon Kwak

Dongwook Shin

Sungnim Jo

Youngmo Koo

Minah Cha

Hyung Cheoul Shim

Hayeon Lee

Haein Cho

Yoolguk Kim

Provided is a display device including a base layer; a circuit layer on the base layer; a first electrode on the circuit layer; a pixel defining film on the circuit layer and having an opening exposing the first electrode; an electron injection layer on the first electrode and exposing a portion of the first electrode; an electron transport layer on the electron injection layer and overlapping the electron injection layer in plan view; an emission layer on the electron transport layer; a hole transport region on the emission layer; and a second electrode on the hole transport region, a first length of the electron injection layer in a direction is shorter than a second length of the first electrode exposed by the opening of the pixel defining film in a direction.

Display device

A display device includes a base layer, a first electrode on the base layer, a pixel-defining layer in which an opening exposing an upper surface of the first electrode is defined, a protective layer overlapping the pixel-defining layer and between the pixel-defining layer and the first electrode, a functional layer on the first electrode in the opening, an auxiliary electrode on an upper surface of the pixel-defining layer, and a second electrode on the functional layer and the auxiliary electrode.

Display device and method of providing the same

A display panel includes a pixel electrode, a common electrode which faces the pixel electrode, an auxiliary electrode spaced apart from the pixel electrode and connected to the common electrode, and a first functional layer between the pixel electrode and the common electrode, the first functional layer extending from the pixel electrode to the auxiliary electrode. The common electrode which is connected to the auxiliary electrode includes in order in a direction away from the first functional layer, a first layer including a transparent conductive material and having a thickness of about 500 angstroms to about 6000 angstroms, and a second layer including a conductive material and having a thickness of about 10 angstroms to about 100 angstroms.

Display panel and method of providing the same

An organic light-emitting display apparatus includes: a semiconductor layer including a drain region; an interlayer-insulating layer covering the semiconductor layer; a connection metal on the interlayer-insulating layer and contacting the drain region through an interlayer contact hole in the interlayer-insulating layer; a protective insulating layer covering the connection metal; a bridge electrode on the protective insulating layer and contacting the connection metal through a protective contact hole in the protective insulating layer; a planarization layer covering the bridge electrode; and a pixel electrode on the planarization layer and connected to the bridge electrode through a pixel contact hole in the planarization layer. In a plan view, the pixel contact hole is defined outside the protective contact hole.

Organic light-emitting display apparatus

Provided are a nickel-based active material, a method of preparing the same, and a lithium secondary battery including a positive electrode including the nickel-based active material. The nickel-based active material includes at least one secondary particle including an aggregate of two or more primary particles, wherein at least a portion of the secondary particle has a radial array structure, and a hetero-element compound is positioned between the primary particles.

Nickel-based active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive electrode including the nickel-based active material

A positive active material for a rechargeable lithium battery includes a first positive active material including a secondary particle including at least two agglomerated primary particles, where at least one part of the primary particles has a radial arrangement structure, as well as a second positive active material having a monolith structure. The first and second positive active materials may both include nickel-based positive active materials. A method of preparing the positive active material, and a rechargeable lithium battery including a positive electrode including the positive active material are also provided.

Positive active material for rechargeable lithium battery, preparing method thereof and rechargeable lithium battery comprising positive electrode including positive active material

A nickel-based active material for a lithium secondary battery, a method of preparing the nickel-based active material, and a lithium secondary battery including a positive electrode including the nickel-based active material, the nickel-based active material comprising a secondary particle having an outer portion with a radially arranged structure and an inner portion with an irregular porous structure, wherein the inner portion of the secondary particle has a larger pore size than the outer portion of the secondary particle.

Provided are a nickel-based active material precursor for a lithium secondary battery including a porous core and a porous shell, wherein a porosity of the porous shell may be greater than a porosity of the porous core, and a dense intermediate layer may be disposed between the porous core and the porous shell, wherein a porosity of the dense intermediate layer may be lower than the porosity of the porous core and the porosity of the porous shell; a method of preparing the same; a nickel-based active material for a lithium secondary battery formed therefrom; and a lithium secondary battery containing a positive electrode including the same.

Nickel active material precursor for lithium secondary battery, method for producing nickel active material precursor, nickel active material for lithium secondary battery produced by method, and lithium secondary battery having cathode containing nickel active material

The present invention relates to a cathode active material for a lithium secondary battery, a method for preparing the same, and a lithium secondary battery including the same, and provides a cathode active material including: a lithium manganese-excess layered structure composite oxide represented by Formula Li[Li(NiCoMn)]OF(here, a+b+c=1, 0.05&#x2266;x&#x2266;0.33, 0&#x2266;y&#x2266;0.08, and 0&#x3c;z&#x2266;0.05); a metal fluoride coating layer coated on a surface of the composite oxide; and a metal phosphate coating layer coated on the metal fluoride coating layer.

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Yongin-si, South Korea

Jiyoon Kim