Lg Philips Lcd Co., Inc.

Lg Display Co., Ltd.

Lg.phillips Lcd Co., Ltd.

Heum-Il Baek

Kyoung-Su Ha

Dong-Guk Kim

Yong-Beom Kim

Hyeon-Ho Son

Jong-Jin Park

Mi-Sook Nam

Kyoung-Ji Bae

Sam-Jong Lee

A display device can include a substrate including first and second pixel regions; a first electrode in each of the first and second pixel regions; and a bank disposed at a boundary of each of the first and second pixel regions on the first electrode defining a first opening exposing a portion of the first electrode and a second opening within the bank defining a formation area of an emitting layer, the second opening is larger than the first opening, in which an area of the first opening in the first pixel region is smaller than an area of the first opening in the second pixel region, and an area of the second opening in the first pixel region is substantially same as an area of the second opening in the second pixel region.

Display device

A display device includes a signal storing portion storing first, second, third, and fourth input data signals, an average signal generating portion averaging the first, second, third, and fourth input data signals, respectively, that are adjacent to each other along a row and a column and generating first, second, third, and fourth output data signals, and a display portion having a plurality of pixels, each of the pixels having first, second, third, and fourth sub-pixels for receiving the first, second, third, and fourth output data signals, respectively, and each of the pixels sharing the sub-pixels with an adjacent one of the pixels.

Display device including pixels sharing sub-pixels and driving method thereof

An array substrate for an in-plane switching liquid crystal display device includes a substrate, gate lines arranged in a first direction on the substrate, data lines crossing the gate lines to define a pixel region, the pixel region consists of four sub-pixel regions, a switching element at the crossing of the gate and data lines, a pixel electrode in each of the sub-pixel regions, and a common electrode alternatively arranged with the pixel electrode to form a plurality of blocks in each of the sub-pixel regions. Two of the sub-pixel regions include an n-number of blocks (n is a natural number). Two of the sub-pixel regions include an (n+2)-number of blocks.

Array substrate for in-plane switching liquid crystal display device and method of fabricating the same

The invention relates to a transflective liquid crystal display device that has a high contrast ratio. The transflective liquid crystal panel includes a homogeneous liquid crystal such that the transflective liquid crystal display device will have an optical retardation when the voltage is applied. Therefore, in order to compensate the optical retardation caused by this liquid crystal, a thickness of the liquid crystal layer is adjusted. Moreover, a thickness of the retardation film is also adjusted. Accordingly, the complete dark state and the high contrast ratio are achieved in the liquid crystal display.

Transflective liquid crystal display and method of fabricating the same

A display device includes an image attribute signal generating portion analyzing R, G, and B input data signals with first brightness levels and generating attribute signals; a signal treating portion converting the R, G, and B input data signals to R, G, and B output data signals using the plurality of attribute signals, wherein R, G, and B input data signals used to display images having colors other than white are converted to R, G, and B output data signals, wherein the R. G, and B output data signals have second brightness levels, wherein the second brightness levels are lower than the first brightness levels; and a display portion having a plurality of pixels, wherein each pixel includes R, G, and B sub-pixels, and wherein the R, G, and B output data signals are supplied to respective ones of the R, G, and B sub-pixels.

Display device capable of adjusting brightness level and driving method thereof

A display device and a driving method thereof includes categorizing red-color, green-color, and blue-color image signals as belonging to one of first and second signal regions, detecting if the image signals have more signals belonging to the first signal region than the second signal region or if the image signals have more signals belonging to the second signal region than the first signal region, driving an image display portion in a first manner if the image signals are detected to have more signals belonging to the first signal region than the second signal region, and driving the image display portion in a second manner if the image signals are detected to have more signals belonging to the second signal region than the first signal region, the image display portion including a plurality of pixels, each of the pixels having red-color, green-color, blue-color, and white-color sub-pixels.

Display device and driving method thereof

A fabricating method of an array substrate for a transflective liquid crystal display device includes: sequentially depositing a first metal layer and an impurity-doped amorphous silicon layer on a substrate and etching the first metal layer and the impurity-doped amorphous silicon layer through a first mask process to form source and drain electrodes, a data line and an ohmic contact layer. An amorphous silicon layer, a first insulating layer and a second metal layer are sequentially deposited on the source and drain electrodes, the data line and the ohmic contact layer and etching the amorphous silicon layer, the first insulating layer and the second metal layer through a second mask process to form a gate electrode, a gate line and an active layer, the gate line defining a pixel region with the data line. A second insulating layer is formed on the gate electrode and the gate line. A reflective plate is formed on the second insulating layer at the pixel region through a third mask process, the reflective plate having a transmissive hole. A third insulating layer is deposited on the reflective plate and etching the third insulating layer through a fourth mask process to form a drain contact hole exposing the drain electrode and a transmissive groove corresponding to the transmissive hole. A pixel electrode is formed on the third insulating layer through a fifth mask process, the pixel electrode being connected to the drain electrode through the drain contact hole.

Method for fabricating a transflective liquid crystal display device

A transflective LCD device improves a light transmittance in both the transmissive mode and the reflective mode and improves efficiency in the use of the light regardless of wavelength. To properly control the ON/OFF-switch of the blue wavelength band or the red wavelength band, the transflective LCD device adopts a half wave plate (&#x3bb;/2) and changes the optic axes of the polarizers and the retardation film.

Transflective liquid crystal display device with particular angle relationships between the half wave plate and polarizers

A display device includes a comparing portion extracting a minimum value and a maximum value of red, green, blue source image data signals, a first extracting portion extracting an intermediate signal from the minimum value and extracting a white image data signal from the intermediate signal, a second extracting portion extracting a red image data signal from the intermediate signal, the maximum data signal, and the red source image data signal, a third extracting portion extracting a green image data signal from the intermediate signal, the maximum data signal, and the green source image data signal, a fourth extracting portion extracting a blue image data signal from the intermediate signal, the maximum data signal, and the blue source image data signal, and a display panel having a plurality of pixels including red, green, blue, and white sub-pixels supplied with the red, green, blue, and white image data signals, respectively.

Display device and method of driving the same

A liquid crystal display device includes a red sub-pixel having a first area, a green sub-pixel having a second area, a blue sub-pixel having a third area, a white sub-pixel having a fourth area, and a backlight supplying a light to the red, green, blue, and white sub-pixels. The fourth area is smaller than the third area.

Liquid crystal display device

A driving circuit of a liquid crystal display device includes gate and data lines, a thin film transistor connected to the gate and data lines, and a liquid crystal capacitor connected to the thin film transistor. The driving circuit includes a gate driving unit for generating a gate signal applied to the gate line, a source driving unit for generating a data signal applied to the data line, a gamma power source unit for applying a gamma reference voltage to the source driving unit, a common voltage unit for applying a common voltage to the liquid crystal capacitor, a discharging signal unit for generating a discharging enable signal when a power of the liquid crystal display device is off, and a multiplexer, connected to the common voltage unit and the gamma power source unit, for selectively applying a voltage to the source driving unit according to the discharging enable signal.

Driving circuit of a liquid crystal display device for eliminating residual images

An array substrate for a transflective liquid crystal display device, including: a substrate; a data line and a gate line on the substrate, the data line and the gate line defining a pixel region; a thin film transistor connected to the data line and the gate line, the thin film transistor including source and drain electrodes, an ohmic contact layer on the source and drain electrodes, an active layer and a gate electrode over the active layer; a reflective plate at the pixel region, the reflective plate having a transmissive hole; and a pixel electrode over the reflective plate, the pixel electrode being connected to the drain electrode.

Transflective liquid crystal display device and fabricating method thereof

In-plane switching liquid crystal display device comprising unequal sub-pixel regions each controlled by individual switching elements and method of fabricating the same

A transflective liquid crystal display device includes a gate line and a data line on a first substrate that cross each other to define a pixel region having a transmissive region and a reflective region. A first passivation layer covers a thin film transistor which is electrically connected to the gate and data lines, wherein the first passivation layer has a first transmissive hole corresponding to the transmissive region and an inclined portion surrounding the first transmissive hole. A reflector is on the first passivation layer, wherein the reflector corresponds to the reflective region and covers sides of the transmissive region asymmetrically. A second passivation layer is on the reflector. A transparent electrode is on the second passivation layer, wherein the transparent electrode electrically contacts the thin film transistor.

Growing community of inventors

Seoul, South Korea

Heum-Il Baek