Samsung Electronics Co., Ltd.

Samsung Display Co., Ltd.

Sung-Kyu Hong

Young-Chol Yang

Jong-Lae Kim

Hee-Seob Kim

Kyoung-Ju Shin

Baek-Woon Lee

Hee-Seop Kim

Kyong-Ju Shin

Sung-Hwan Hong

Joon-Hak Oh

Doo-Hwan You

Nam-Seok Lee

Jae-Jin Lyu

Won-Sang Park

Sang-Il Kim

Kwang-Hyun Kim

Min-Jae Kim

Joo-han Kim

Won-jae Lee

Ho-Yun Byun

Dong-Sik Sakong

Kyong-Ok Park

The present invention provides a liquid crystal display having excellent visibility. A thin film transistor array panel is provided, which includes: gate lines formed on an insulating substrate; data lines insulated from the gate lines and intersecting the gate lines; first pixel electrodes disposed on pixel areas defined by intersections of the gate lines and the data lines; first thin film transistors, each having three terminals connected to one of the gate lines, one of the data lines, and one of the first pixel electrodes; second pixel electrodes disposed on the pixel areas and capacitively coupled to the first pixel electrodes; and second thin film transistors, each having three terminals connected to a previous gate line, a storage electrode line or one of the data lines, and one of the second pixel electrodes.

Liquid crystal display and panel therefor

A pixel electrode and a direction control electrode capacitively coupled to the pixel electrode are provided in a pixel. A pixel thin film transistor is connected to a gate line, a data line, and the pixel electrode. A direction control electrode thin film transistor is connected to a previous gate line, a previous data lines or a next data line, and the direction control electrode. The gate lines are supplied with scanning signals, and each scanning signal includes first and second pulses in a frame. The first pulse of a scanning signal is synchronized with the second pulse of a previous scanning signal.

Liquid crystal display

A pair of polarizers having different polarization efficiencies is employed for a display device. With such a pair of polarizers, the brightness may increase without deteriorating the contrast.

Display device

In a voltage generating circuit and a display apparatus, a driving voltage generator receives an input voltage to output a first driving voltage and a second driving voltage that is inversely proportional to a temperature in response to a feedback voltage. A temperature compensator generates the feedback voltage as a function of the temperature and the second driving voltage and applies it to the driving voltage generator. A gate-on voltage generator pumps the second driving voltage to generate a gate-on voltage, and a gamma voltage generator outputs a plurality of gamma voltages, each having a different voltage level that is disposed between the first driving voltage and a ground voltage. The gate-on voltage, which is inversely proportional to the temperature, is applied to the gate driver, and the gamma voltages, which are maintained at constant levels, prevent the response speed of the display apparatus from varying with temperature.

LCD voltage generating circuits

A thin film transistor array panel is provided, which includes: an insulating substrate; a first signal wire formed on the insulating substrate; a second signal wire formed on the insulating substrate and intersecting the first signal wire in an insulating manner; first and second pixel electrodes formed in a pixel area defined by the intersections of the first and the second signal wires and including a plurality of subareas partitioned by cutouts; a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts; and a first thin film transistor connected to the direction control electrode, the first signal wire, and the second signal wire.

Thin film transistor panel for liquid crystal display

A thin film transistor array panel is provided, which includes: an insulating substrate; a plurality of first signal lines formed on the insulating substrate; a plurality of second signal lines formed on the insulating substrate and intersecting the first wire in an insulating manner; a pixel electrode formed in a pixel area defined by the intersections of the first signal lines and the second signal lines and including a plurality of subareas partitioned by cutouts and a plurality of bridges connecting the subareas; and a direction control electrode formed in the pixel area and including a portion overlapping at least one of the cutouts, wherein two long edges of each subarea are parallel to each other and the at least one of cutouts overlapping the portion of the direction control electrode defines one of two longest edges of the subarea.

Thin film transistor panel for multi-domain liquid crystal display

An array substrate includes a gate line, a data line, a switching device, a transmissive electrode, a reflective electrode and a compensating wiring. A pixel region includes first and second regions. The switching device is connected to the gate line and the data line. The transmissive electrode is connected to the switching device. The transmissive electrode is formed in the first region. The reflective electrode is insulated from the transmissive electrode. The reflective electrode is formed in the second region that is adjacent to the first region. The compensating wiring is connected to the switching device. The compensating wiring faces the reflective electrode in the second region with an insulation layer interposed therebetween. Thus, both of a reflectivity of the reflective electrode and a transmissivity of the transmissive electrode are enhanced simultaneously, while the liquid crystal display apparatus maintains a uniform cell gap.

Array substrate, liquid crystal display apparatus having the same and method for driving liquid crystal display apparatus

A liquid crystal display is provided, which includes: first and second panels facing each other, interposing a gap therebetween, and first and second field generating electrodes, respectively; a liquid crystal layer filled in the gap and including a plurality of liquid crystal molecules; first and second tilt direction defining members disposed on the first and the second panels, respectively, and giving a first tilt direction to a group of the liquid crystal molecules; and a third tilt direction defining member disposed on one of the first and the second panels and giving a second tilt direction oblique to the first tilt direction to the group of the liquid crystal molecules.

A thin film transistor array panel including a substrate; a gate line formed on the substrate; a gate insulating layer formed on the gate line; a semiconductor layer formed on the gate insulating layer; a data line formed on the semiconductor layer; a drain electrode separated from the data line and formed on the semiconductor layer; a coupling electrode connected to the drain electrode; a first subpixel electrode connected to the drain electrode; and a second subpixel electrode separated from the first subpixel electrode and overlapping the coupling electrode.

TFT array panel having a two-portion coupling electrode extending from drain electrode in different directions with first portion extending along a gap between two overlapping subpixel electrodes thereon and second portion extending in same direction as data line

Growing community of inventors

Seongnam-si, South Korea

Sung-Kyu Hong