Lg Display Co., Ltd.

Lg Philips Lcd Co., Inc.

Su-Seok Choi

Sang-Min Jang

Suk-Won Choi

Mi-Sook Nam

Sang-Ho Choi

Kyoung-Su Ha

Hyun-Suk Jin

Jang-Jin Yoo

Hyung-Ki Hong

Wook-Sung Kim

Yong-Bum Kim

A liquid crystal display device includes first and second substrate facing each other, a pixel electrode and a common electrode on an inner surface of the first substrate and generating an electric field substantially parallel to the first substrate, a first alignment layer on the inner surface of the first substrate and homeotropically aligned, a first polarizer on an outer surface of the first substrate and having a first polarization axis, a second alignment layer on an inner surface of the second substrate and homogeneously aligned, a second polarizer on an outer surface of the second substrate and having a second polarization axis perpendicular to the first polarization axis, and a liquid crystal layer between the first and second alignment layers.

Liquid crystal display device comprising a liquid crystal layer having a twisted helical structure when an electric field is not generated

A transflective liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line on an inner surface of the first substrate; a data line crossing the gate line to define a pixel region including a reflective portion and a transmissive portion, wherein the transmissive portion has a polygonal shape inscribed in a rectangle, and a circumference of the transmissive portion is less than the circumference of the rectangle; a thin film transistor connected to the gate line and the data line; a passivation layer on the thin film transistor, the passivation layer having a opening corresponding to the transmissive portion; a reflective layer corresponding to the reflective portion on the passivation layer; a transparent electrode corresponding to the pixel region over the reflective layer; a color filter layer on an inner surface of the second substrate; a common electrode on the color filter layer; and a liquid crystal layer between the common electrode and the transparent electrode.

Transflective liquid crystal display device with transmissive portion having right-angled triangle shape and fabricating method thereof

An in-plane switching mode liquid crystal display device includes a first substrate including a pixel electrode in a pixel region, a second substrate facing the first substrate and including a common electrode, a first alignment layer on the pixel electrode, a second alignment layer on the common electrode, a first ferroelectric liquid crystal layer on the first alignment layer and including a first spontaneous polarization, a second ferroelectric liquid crystal layer on the second alignment layer and including a second spontaneous polarization, a rotational direction of the first ferroelectric liquid crystal layer with respect to the first alignment layer being different from a rotational direction of the second ferroelectric liquid crystal layer with respect to the second alignment layer, and a twisted nematic liquid crystal layer between the first and second ferroelectric liquid crystal layers.

Fabrication method of in-plane switching mode liquid crystal display device including twisted nematic liquid crystal layer between first and second ferroelectric liquid crystal layers

An array substrate of a reflective liquid crystal display device including gate and data lines on the substrate, a thin film transistor adjacent to where a gate line and a data line cross over each other, wherein the thin film transistor has a gate electrode, a source electrode and a drain electrode, a passivation layer with an uneven surface having curved profiles that are asymmetric over the thin film transistor, and an opaque conductive pixel electrode having a reflective surface with curved profiles that are asymmetric on the passivation layer.

Array substrate for a reflective liquid crystal display device with asymmetric curved profiles and manufacturing method for the same

A liquid crystal display device includes a first substrate having a first polarizer and a first retardation layer; a second substrate having a second polarizer and a second retardation layer; and a pixel between the first and second substrates, the pixel having a thin film transistor, a first reflective layer on the first substrate, a second reflective layer on the second substrate, a liquid crystal layer between the first and second substrates.

Dual reflective liquid crystal display device

A liquid crystal display device includes: a first substrate and a second substrate facing each other; a pixel electrode on an inner surface of the first substrate; a first alignment layer of a ferroelectric liquid crystal material over the pixel electrode, the first alignment layer having a first spontaneous polarization along a first direction; a common electrode on an inner surface of the second substrate; a second alignment layer of the ferroelectric liquid crystal material over the common electrode, the second alignment layer having a second spontaneous polarization along the first direction; a liquid crystal layer in between the first alignment layer and the second alignment layer, the liquid crystal layer including a nematic liquid crystal material and a dye material; and a first polarizer disposed on an outer surface of one of the first substrate and the second substrate.

Liquid crystal display device and method of fabricating the same

In-plane switching mode liquid crystal display device comprising twisted nematic liquid crystal layer between first and second ferroelectric liquid crystal layers having clockwise and counterclockwise rotational directions

Transflective liquid crystal display device having high aperture ratio and fabrication method thereof

A liquid crystal display device includes a plurality of data lines arranged along a first direction on a substrate, a plurality of gate lines arranged a second direction perpendicular to the first direction on the substrate to define a plurality of pixel regions, each of the gate lines having at least one first set of protrusions and depressions, a driving device within each of the pixel regions, a pixel electrode within each of the pixel regions, and a metal layer overlapping each of the gate lines to create a storage capacitor.

The trans-reflective liquid crystal display device of this invention includes a plurality of data and gate lines defining a plurality of pixels, the pixels having a reflection region and a transmission region; a timing controller that receives, converts, and outputs image data; a switching unit that determines the output signal of the timing controller according to a transmission mode or reflection mode; a gate driver that receives a gate signal from the timing controller; a data driver that receives a data signal from the timing controller; a liquid crystal display panel with a TFT array substrate and a color filter substrate, the liquid crystal display panel displaying the image according to a gate pulse and a data voltage applied by the gate driver and the data driver; a sequential backlight including red, green, and blue lamps wherein, the backlight is turned on in a transmission mode to sequentially transmit the light into the transmission region and is turned off in a reflection mode.

Trans-reflective liquid crystal display device for improving color reproducibility and brightness and method for driving thereof

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

A liquid crystal display device comprises a liquid crystal layer formed between first and second substrates, the liquid crystal layer being divided into at least two layers.

Liquid crystal display device and fabrication method thereof

An in-plane switching mode liquid crystal display device comprises a first substrate including a pixel region and a pixel electrode in the pixel region; a second substrate facing the first substrate and including a common electrode; first and second alignment layers disposed on the entire surfaces of the pixel electrode and the common electrode; first and second ferroelectric liquid crystal layers coated on the first and second alignment layers and including first and second spontaneous polarizations; and a twisted nematic liquid crystal layer interposed between the first and second ferroelectric liquid crystal layers.

Fabrication method of an in-plane switching mode liquid crystal display device comprising first and second ferroelectric liquid crystal layers having different rotational velocities of their spontaneous polarizations

A transflective liquid crystal display device includes a pixel region having reflective and transmissive portions. A first passivation layer having one or more protrusions in the reflective portion is disposed on a thin film transistor formed on a first substrate. A reflective layer disposed on the first passivation layer in the reflective portion is uneven, at least in part due to the protrusions. A second passivation layer and a pixel electrode are disposed on the first passivation layer. A color filter layer disposed on an inner surface of the second substrate has at least one through hole in the reflective portion. An overcoat layer disposed on the color filter layer has an open portion in the transmissive portion. A common electrode is disposed on the overcoat layer and a liquid crystal layer is disposed between the pixel electrode and the common electrode.

Transflective liquid crystal display device and fabricating method thereof

A liquid crystal display device includes a first substrate; a second substrate facing the first substrate; a pixel electrode on the first substrate; a common electrodes on the second substrate; a first alignment layer on the pixel electrode; a second alignment layer on the common electrode; a liquid crystal layer between the first and second alignment layers, liquid crystal molecules of the liquid crystal layer disposed in a bend state; and a hydrogen-bonded structure in the liquid crystal layer, the hydrogen-bonded structure having a bow shape to maintain the bend state of the liquid crystal molecules.

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Gyeonggi-do, South Korea

Su-Seok Choi