Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Enf Technology Co., Ltd.

Bong Kyun Kim

Hong Sick Park

Sun Young Hong

Jong Hyun Choung

Byeong Jin Lee

Ji Sun Lee

Byung Uk Kim

Sung Gun Shin

Soon Beom Huh

Se Hwan Jung

Doo Young Jang

Bong Kyu Shin

Jong Hyun Jeong

Seong Bae Kim

Won Suk Shin

Young Jin Park

Hwan Mook Kim

Seung Bo Shim

Dong Hee Lee

Jin Suek Kim

Beom Soo Kim

Seung Ho Yoon

Jae Woo Jeong

In Seol Kuk

Sang Tae Kim

Suk Il Yoon

Suk Ii Yoon

Young Chul Park

Young Jin Yoon

Dae Sung Lim

Han Soek Nam

Hyo Won Park

Sang Moon Yun

Shin Hyuk Choi

Seung Hee Kim

Sang Dai Lee

An etchant composition may include: a peroxosulfate; a cyclic amine compound; a first amphoteric compound including a carboxyl group; and a second amphoteric compound including a sulfone group, wherein the second amphoteric compound may be different from the first amphoteric compound.

Etchant composition and method of manufacturing wiring substrate using the same

Provided is a method for manufacturing a glycol based compound. The method comprises agitating a mixture of a first glycol based compound, a hydrazide based compound, and a sulfonic acid based compound, and performing fractional distillation of resultant materials of the agitating to recover a second glycol based compound having a formaldehyde content of 0 ppm.

Method for manufacturing high purity glycol based compound

The present invention provides a stripping composition and a stripping method capable of easily stripping a color resist or an organic insulating film formed on a substrate to reuse the substrate when defects are found during a process of forming the color filter or organic insulating film on the substrate. In one embodiment, the stripping composition includes about 0.5 to about 45 wt % of hydroxide compound, about 10 to about 89 wt % of alkyleneglycolalkylether compound, about 5 to about 45 wt % of alkanolamine compound, and about 0.01 to about 5 wt % of inorganic salt compound. Advantageously, the stripping process can be performed without damaging a thin film transistor of a bottom substrate while removing the color resist or organic insulating film.

Composition for stripping and stripping method

A thin film transistor substrate and a method of manufacturing the thin film transistor substrate comprises forming a gate line and a data line intersecting each other with a gate insulating layer interposed and defining a pixel area on the substrate, a thin film transistor electrically connected to the gate line and the data line, and a stepped-structure occurring pattern overlapping at least one of the gate line and the data line; forming a passivation layer having a stepped-structure portion formed by the stepped-structure occurring pattern on the substrate; forming a photoresist pattern having a second stepped-structure portion corresponding to the stepped-structure portion on the passivation layer; patterning the passivation layer using the photoresist pattern as a mask; forming a transparent conductive layer on the substrate; and removing the photoresist pattern where the transparent conductive layer is covered by a stripper penetrating through the stepped-structure portion of the photoresist pattern and forming a pixel electrode connected to the thin film transistor.

Thin film transistor substrate and method of manufacturing thereof

A device and a method for using a history menu on a mobile terminal that has a history data base for storing a history of executions of contents, which allows easy execution of recently used menu or content are provided. The method includes extracting, upon execution of content on the mobile terminal, content information pertaining to the executed content, storing the extracted content information in the history database, displaying, if a history key is input, content information stored in the history database and executing, upon selecting one of the displayed content information, content corresponding to the selected content information. The method allows display of a list of contents using a call key while enabling a user to execute content upon selection, thus making it easier for the user to re-execute recently used contents.

Device and method for using history menu on mobile terminal

Growing community of inventors

Incheon, South Korea

Bong Kyun Kim