Samsung Display Co., Ltd.

Jinsuek Kim

Seungbo Shim

Bong-Kyun Kim

Jae-Soo Jang

Hyeran Mun

Saeron Park

Hokil Oh

Eung-Gyu Lee

Eunggyu Lee

Sang-woo Kim

Hyun-Cheol Shin

Donghee Lee

Hyungguen Yoon

Yunseok Lee

Gyu-po Kim

Younhak Jeong

Shinhyuk Choi

Changwoo Kwon

Woonhyung Shim

Ilbae Ahn

Seokjun Jang

Ji-hun Park

Yong-su Lee

Yangil Jeon

An etchant composition of an embodiment may etch a multi-layered film of titanium/copper and may include about 5 wt % to about 20 wt % of persulfate, about 0.1 wt % to about 5 wt % of phosphoric acid or phosphate, about 0.01 wt % to about 2 wt % of a carbonyl ring compound, about 0.01 wt % to about 1 wt % of a 3-nitrogen ring compound, about 0.1 wt % to about 2 wt % of a 4-nitrogen ring compound, about 0.1 wt % to about 0.9 wt % of a fluorine compound, about 0.1 wt % to about 0.5 wt % of hydrogen about 1 wt % to about 3 wt % of a zwitterionic compound, and sulfate, water which is included in an amount that makes the total weight of the entire composition about 100 wt %.

Etchant composition, and method for manufacturing metal pattern and thin film transistor substrate using the same

A display device includes a first display panel, a second display panel, and an optical member. The first display panel includes a first substrate and a first cover member on the first substrate. The second display panel is coupled to a first side of the first display panel, and includes a second substrate and a second cover member on the second substrate. The optical member is in a groove defined by the first and second cover members at a boundary of the first and second display panels.

Display device including coupled display panels

A tile display device includes element display devices, each including an element display panel which defines a display area and a panel driver disposed on a seam area surrounding the display area, and a coupling display device disposed on element display devices and coupled to the element display devices at neighboring seam areas. The coupling display device includes a boundary display panel on the neighboring seam areas, a coupler which couples the boundary display panel to the element display panels to provide a coupling panel structure, a boundary driver which drives the boundary display panel and a signal control center which drives the coupling panel structure.

Coupling display device and tiled display device having the same

An etchant composition including a persulfate, a four-nitrogen ring compound, a carbonyl ring compound having two or more carbonyl groups, and water, and having a weight ratio of the four-nitrogen ring compound and the carbonyl ring compound of about 1:0.1 to about 1:2. The etchant composition may etch a multilayer of titanium/copper and may be used for manufacturing a metal pattern and an array substrate having excellent properties of an etched pattern.

Etchant composition, and method for manufacturing metal pattern and array substrate using the same

A liquid crystal display device includes first, second, third, and fourth pixel electrodes, each including a stem portion and a branch portion to define a plurality of domains, a common electrode opposing each of the first, second, third, and fourth pixel electrodes, and a liquid crystal layer between each of the common electrodes and a corresponding one of the first through fourth pixel electrodes, wherein an overall planar area of the stem portion and the branch portion of the fourth pixel electrode is smaller than an overall planar area of the stem portion and the branch portion of each of the first through third pixel electrodes.

Liquid crystal display device comprising first, second, and third pixel electrodes each having first and second stem portions that extend from vertices of a central pattern

A display apparatus includes a first display substrate, a second display substrate, a coupling member interposed between the first display substrate and the second display substrate in a seal line area to couple the first display substrate and the second display substrate, a contact structure interposed between the coupling member and at least one of the display substrates in the seal line area, the contact structure having a concavo-convex shaped surface in contact with the coupling member, and the contact structure includes a moisture trap area and a moisture barrier area, and an electrode layer disposed on the moisture trap area but not on the moisture barrier area, and configured to contact portions of the coupling member in the seal line area.

Method of manufacturing a display panel with concavo-convex structure substrate coupling

Display panel with substrate coupling member

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Daejeon, South Korea

Jinsuek Kim