Lg Display Co., Ltd.

Lg Philips Lcd Co., Inc.

Byoung-Ho Lim

Hyo-Uk Kim

Hyun-seok Hong

Joo-Soo Lim

Byung-Chul Ahn

Hyun-Kyu Lee

Eui-Tae Kim

Sang-Wook Park

Do-Sung Kim

Hee-Young Kwack

Byung-Koo Kang

Do-Young Lee

Hwan Mook Kim

Ji-Hyun Jung

Dong-Yung Kim

Dong-Hoon Lee

Jin-Ho Kim

In-Duk Song

Kyoung-Nam Lim

Bo-Ram Kim

Hyun-Seok Hong

Sun-Hwa Lee

Hong-Sik Kim

Tae-Yong Jung

Sung-Gu Kang

A transflective liquid crystal display includes: a first substrate divided into a pixel part and first and second pad parts; a gate electrode and a gate line formed at the pixel part of the first substrate; a first insulation film formed on the first substrate; an active pattern formed as an island at an upper portion of the gate electrode and having a width smaller than the gate electrode; an ohmic-contact layer and a barrier metal layer formed on the first substrate and on source and drain regions of the active pattern; source and drain electrodes formed at the pixel part of the first substrate and electrically connected with the source and drain regions of the active pattern via the ohmic-contact layer and the barrier metal layer; a data line formed at the pixel part of the first substrate and crossing the gate line to define a pixel region including a reflective portion and a transmissive portion; a pixel electrode formed at the transmissive portion of the pixel region and electrically connected with the drain electrode; a source electrode pattern, a drain electrode pattern and a data line pattern formed at lower portions of the source electrode, the drain electrode and the data line, and formed of a conductive film that forms the pixel electrode; a reflective electrode formed at the reflective portion of the pixel region and electrically connected with the drain electrode and the pixel electrode; a second insulation film exposing the pixel electrode of the pixel region; and a second substrate attached to the first substrate in a facing manner.

Method of fabricating a transflective liquid crystal display device

A liquid crystal display device includes a first substrate divided into a pixel part and first and second pad parts, a gate electrode and a gate line formed at the pixel part, an active pattern formed over the gate electrode with a first insulation film interposed therebetween, and having a width smaller than the gate electrode, an ohmic-contact layer formed on source and drain regions of the active pattern, source and drain electrodes formed over the gate electrode and electrically connected with the source and drain regions via the ohmic-contact layer, a data line formed on the pixel part and crossing the gate line to define a pixel region, a pixel electrode formed at the pixel region and electrically connected with the drain electrode, a second insulation film formed on the first substrate, and a second substrate attached to the first substrate.

Liquid crystal display device and fabrication method thereof

A trans-reflective LCD and a manufacturing method thereof are provided to simplify a manufacturing process and improve yield by reducing the number of masks and implement high definition by preventing wavy noise. A first substrate divided into a pixel unit and first and second pad units is provided. Through a first mask process, a gate electrode and a gate line are formed in the pixel unit of the first substrate. Through a second mask process, an active pattern of an island type is formed on the gate electrode in a state when a first insulating layer is interposed. On the active pattern, an n+ amorphous silicon thin film pattern and a conductive layer pattern are formed. Through a third mask process, a source electrode and a drain electrode are formed in the pixel unit of the first substrate. A data line crosses the gate line to define a pixel area comprising a reflection unit and a transmission unit. Through the third mask process, a pixel electrode comprising a transparent conductive layer is formed in the transmission unit of the pixel area. Through a fourth mask process, a second insulating layer is formed on the first substrate. Through a fifth process, a reflection electrode comprising an opaque conductive layer is formed in the reflection unit of the pixel area. The first substrate is deposited with a second substrate.

Transflective liquid crystal display device with barrier metal layer between ohmic-contact layer and source/drain electrode patterns and fabrication method thereof

An array substrate for a liquid crystal display device includes a substrate, a gate line on the substrate, a thin film transistor including a gate electrode of the gate line, a gate insulating layer over the gate electrode, an active layer on the gate insulating layer and ohmic contact layers on the active layer, and source and drain electrodes over the ohmic contact layers, a pixel electrode electrically connected to the drain electrode, a data line electrically connected to the source electrode and crossing the gate line, a common electrode spaced apart from the pixel electrode, and a passivation layer directly between the pixel electrode and the common electrode and directly between the source and drain electrodes.

Array substrate for liquid crystal display device and method of manufacturing the same

A method of forming an inorganic insulating layer on a substrate comprises supplying a mixed gas between the substrate and a target, and generating a plasma between the substrate and the target. The target comprises a silicon-based material. The method further comprises depositing a plurality of ions from the plasma on the substrate.

Method of forming inorganic insulating layer and method of fabricating array substrate for display device using the same

An array substrate for an in-plane switching mode liquid crystal display device includes a substrate, a gate line along a first direction on the substrate, a data line along a second direction and crossing the gate line to define a pixel region, a common line on the substrate, a thin film transistor connected to the gate and data lines, a pixel electrode in the pixel region and connected to the thin film transistor, the pixel electrode including horizontal parts along the first direction, and a common electrode in the pixel region and connected to the common line, the common electrode including horizontal portions along the first direction, wherein the pixel electrode and the common electrode are formed on a same layer.

Array substrate for in-plane switching mode liquid crystal display device including pixel and common electrodes on the same layer and method of manufacturing the same

A liquid crystal display (LCD) device includes: a first substrate divided into a pixel part and first and second pad parts; a gate electrode and a gate line formed at the pixel part of the first substrate; an active pattern as an island formed over the gate electrode with a first insulation film interposed therebetween, and having a width smaller than the gate electrode; an ohmic-contact layer formed on source and drain regions of the active pattern on the first substrate; source and drain electrodes formed as islands over the gate electrode of the first substrate and electrically connected with the source and drain regions of the active pattern via the ohmic-contact layer; a data line formed on the pixel part of the first substrate and crossing the gate line to define a pixel region; a pixel electrode formed at the pixel region and electrically connected with the drain electrode; a second insulation film formed on the first substrate; and a second substrate attached to the first substrate in a facing manner.

The present invention discloses a liquid crystal display device which can improve quality of image by reducing a leakage current by a backlight, and a fabrication method thereof. The liquid crystal display device includes: a substrate; a plurality of gate lines aligned on the substrate in a direction; gate electrodes connected to the gate lines; a plurality of data lines for defining a plurality of pixels by vertically crossing the gate lines; source electrodes and drain electrodes formed on the gate electrodes and separated from the data lines with a predetermined gap; pixel electrodes formed in the pixel regions and electrically connected to the drain electrodes; connecting patterns for electrically connecting the data lines to the source electrodes; and semiconductor layers disposed between the gate electrodes and the source/drain electrodes.

Liquid crystal display device capable of reducing leakage current, and fabrication method thereof

Disclosed is a method of fabricating a liquid crystal display (LCD) device in which a photosensitive film is selectively patterned using a half-tone mask, and then a portion of a passivation layer at a pixel area is selectively removed to secure an penetration path of a stripper. Additionally, a crack is generated on a conductive film formed on a photosensitive film pattern through a predetermined heat treatment to facilitate a lift-off process. Thus, the number of masks can be reduced to simplify the fabrication process of the LCD device and reduce fabrication costs.

An array substrate for a liquid crystal display device, including: a substrate; a gate line on the substrate; a data line crossing the gate line to define a pixel region; a thin film transistor connected to the gate line and the data line, the thin film transistor including a gate electrode connected to the gate line, a semiconductor layer whose boundary is within the gate electrode, a source electrode connected to the data line and a drain electrode spaced apart from the source electrode; a passivation pattern covering the data line and the thin film transistor; and a pixel electrode extending from the drain electrode.

Array substrate for liquid crystal display device and method of fabricating the same

A substrate for a transflective liquid crystal display device includes a plurality of gate lines on a substrate; at least one data line crossing the plurality of gate lines to define a pixel region including a transmissive portion and a reflective portion; a thin film transistor connected to one of the plurality of gate lines and the at least one data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode; a first insulating layer covering a portion of the thin film transistor, the first insulating layer uncovering the pixel region and a portion of the drain electrode; a transparent electrode in the pixel region, the transparent electrode directly contacting the drain electrode and the semiconductor layer; and a reflective layer in the reflective portion, the reflective layer having a first uneven surface.

Transflective liquid crystal display device and fabricating method thereof

An array substrate for a liquid crystal display device includes a substrate, a gate line over the substrate, a data line crossing the gate line to define a pixel region and including a transparent conductive layer and an opaque conductive layer, a data pad at one end of the data line and including a transparent conductive layer, a thin film transistor connected to the gate line and the data line and including a gate electrode, an active layer, an ohmic contact layer, a buffer metallic layer, a source electrode and a drain electrode, and a pixel electrode in the pixel region and connected to the thin film transistor, the pixel electrode including a transparent conductive layer.

An array substrate for a fringe field switching mode liquid crystal display device comprises a gate line on a substrate; a gate electrode connected to the gate line; a gate insulating layer on the gate line and the gate electrode; a semiconductor layer on the gate insulating layer and corresponding to the gate electrode; source and drain electrodes on the semiconductor layer and spaced apart from each other, the source electrode having first and second sub-source layers, the drain electrode having first and second sub-drain layers. Also disclosed in a method of fabricating a fringe field switching mode liquid crystal display device.

Growing community of inventors

Gyeongsangbuk-do, South Korea

Byoung-Ho Lim