Samsung Sdi Co., Inc.

Samsung Display Co., Ltd.

Wonseok Kim

Kyung Kon Kim

Jandee Kim

Sangheon Lee

Kyeongyi Heo

Joo Han Song

Jake Kim

Hoyun Byun

Jeongsoon Shin

Kyeong-Beom Cheong

Jeongin Lee

Jongman Kim

Youngchang Lim

Cheol Ho Park

Seung Bum Suh

Su Dong Lee

Hoyul Baek

Bookan Ki

Younghwa Ko

Jang-Woo Lee

Inho Jung

Heekwan Chai

Bounggun Joung

Kwangki Baeg

Yongsic Kim

Somin Kim

Seung Ho Yang

Young Chang Lim

Kyungmi Kwon

Provided are an adhesive composition having enhanced reliability at edge portions of a display apparatus and the display apparatus, the display apparatus including a display panel displaying an image to the outside, a cover window arranged on the display panel, and an adhesive layer interposed between the display panel and the cover window, the adhesive layer including an adhesive composition including (meth)acrylate having an alicyclic group, a low-temperature glass transition (meth)acrylic monomer, (meth)acrylate having a hydroxyl group, a high-temperature glass transition (meth)acrylic monomer, and a reactive diluent monomer, in which a maximum value of stress of the adhesive composition, with the stress changing over time when a strain of 25% is applied at 60° C. to the adhesive layer, is from about 30000 Pa to about 40000 Pa.

Adhesive composition and display apparatus including the same

A secondary battery includes an electrode assembly, a battery case configured to house the electrode assembly and an electrolyte, a lead terminal extending from a coupling section with the electrode assembly, through the battery case and protrudes outside the battery case, and an adhesive layer on the lead terminal having adhesion depending on a reaction of the adhesive layer to the electrolyte. The secondary battery has an improved structure so that an internal short circuit is prevented and stability of the secondary battery is improved.

Secondary battery

A rechargeable battery includes an electrode assembly including a first electrode, a second electrode, and a separator, the first electrode and the second electrode being wound with the separator therebetween, and a case to receive the electrode assembly, wherein the first electrode includes a first tab part having a first coating region and a plurality of first uncoated tabs protruding out of the first coating region, the first coating region being coated with a first active material, and the plurality of first uncoated tabs not being coated with the first active material, and a first non-tab part connected to the first tab part, the first non-tab part wrapping the first tab part at an outermost portion thereof at least one time.

Rechargeable battery

Embodiments of the present invention provide an accelerated lifetime estimation device for predicting the lifetime of a secondary battery, and a method thereof. The accelerated lifetime estimation device can accurately estimate a normal lifetime of the secondary battery while reducing an evaluation time period of the secondary battery.

Device for estimating a lifetime of a secondary battery and method thereof

Growing community of inventors

Yongin-si, South Korea

Wonseok Kim