Lg Display Co., Ltd.

Han Jin Ahn

Hanseok Lee

SeungRyull Park

Jinpil Kim

HyunJin Park

Su-Bin Lee

Dong Guk Kim

Han Seok Lee

Seung Ryull Park

Su Bin Lee

Joung Won Woo

Han Shin Hwang

Woo Keun Lee

Hyun Jin Park

Jin Pil Kim

Provided is a method of manufacturing new liquid crystal display device according to an embodiment of the present invention. Firstly, an alignment film is formed on a substrate. The alignment film is divided into a first alignment film formed using, as a precursor, liquid-state polyimide that contains a photodecomposition substance and a second alignment film formed using, as a precursor, a polyamic acid that does not contain a photodecomposition substance. UV light is irradiated to the alignment film, and decomposed substances formed by irradiation of the UV light is removed by an at least two-step removing process. By the method of manufacturing a liquid crystal display device according to the exemplary embodiment of the present disclosure, bright spots are minimized in pixels and a brightness of black is lowered, so that a liquid crystal display device with a high contrast ratio can be realized.

Liquid crystal display device and method of manufacturing the same

An alignment film for liquid crystal display device includes a first portion positioned towards to the liquid crystal layer and a second portion positioned away from the liquid crystal layer. The first portion provides improved anchoring force while the second portion exhibits a lower volume resistance than the first portion. Thus, AC image sticking and DC image sticking can be minimized at the same time.

An in-plane-switching mode liquid crystal display device is disclosed. The LCD device includes: first and second substrates opposite to each other; a liquid crystal layer interposed between the first and second substrates; a passivation film formed on the first substrate in which a thin film transistor is disposed; pixel and common electrodes arranged alternately with each other; and a first alignment film formed on the pixel and common electrodes. The liquid crystal layer and the passivation film are formed to have lower non-resistances than that of the first alignment film.

In-plane-switching mode liquid crystal display device with liquid crystal layer and passivation film having two orders of a specific resistivity lower than a specific resistivity of first alignment film

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Seoul, South Korea

Han Jin Ahn