Lg Display Co., Ltd.

Injae Chung

KiYong Kim

Chulsang Jang

Namsoo Kim

Insu Joo

Zhiyuan Cui

Euitae Kim

KiDuk Kim

Kyungjoon Kwon

Woojin Nam

EuiYeol Oh

Yongwoo Choi

Jungil Lee

Gisang Hong

WooJin Nam

Joonyoung Yang

Kiduk Kim

An organic light emitting diode display device and a driving method thereof are disclosed. The organic light emitting diode display device according to an embodiment of the invention comprises a display panel including a plurality of data lines, a plurality of gate line pairs crossing the data lines, and a plurality of light emitting cells which include an organic light emitting diode device, first and second cell driving circuits for alternately driving the organic light emitting diode device; a data voltage generator supplying a data voltage of a first polarity to the data lines; a compensation voltage generator supplying a compensation voltage of a second polarity to the data lines; and a scan driver for sequentially supplying scan pulses to the gate line pairs, wherein the first and second cell driving circuits are alternately supplied with the data voltage and the compensation voltage in response to the scan pulses to alternately driven the organic light.

Organic light emitting diode display device and driving method thereof

A liquid crystal display includes a display panel, a backlight unit providing light to the display panel, a representative value adjusting unit that divides an input image in conformity with a plurality of blocks divided from the display panel and a light emitting surface of the backlight unit, selectively adjusts a representative value of each block based on a luminance difference between the blocks and a grayscale banding degree of each block, and generates a modified representative value of each block, a dimming value determining unit that maps the modified representative value of each block to a predetermined dimming curve and selects a dimming value of each block, and a light source driver for driving light sources of the backlight unit based on the dimming value of each block.

Liquid crystal display and method of local dimming thereof

A method for manufacturing a thin film transistor substrate including forming bus lines by etching a surface of a substrate to form bus line patterns and filling the bus line patterns with a bus line metal; forming a semiconductor channel layer at one portion of a pixel area defined by the bus lines; and forming source-drain electrodes on the semiconductor channel layer, a pixel electrode extending from the drain electrode within the pixel area, and a common electrode parallel with the pixel electrode. The bus lines are formed as being thicker but the bus lines are buried in the substrate so that the line resistance can be reduced and the step difference due to the thickness of bus line does not affect the device.

Method of manufacturing a thin film transistor including forming bus line patterns in a substrate and filling with metal

A liquid crystal display (LCD) and a method of driving the same are disclosed. The liquid crystal display includes a liquid crystal display panel; a backlight unit; a panel drive circuit; a timing controller; an internal memory; a self-screen drive controller; a scaler unit; a selection unit; an internal power circuit; an external power circuit; and a microprocessor that blocks an output of the external power circuit from being supplied to the scaler unit in a self-screen drive.

Liquid crystal display device and driving method thereof

The liquid crystal display device includes a plurality of gate lines and a plurality of data lines forming a matrix, a back light unit including a plurality of light source blocks capable of being driven separately, an image processing circuit to generate a movement judgment signal based on a digital video data to be displayed in an interior mode, a backlight controller to generate a light source driving control signal to control portions of the light source blocks corresponding to a moving image and portions of the light source blocks corresponding to a still image, separately, based on the movement judgment signal, and a backlight driving circuit including a plurality of light source drivers to turn on the portions of the light source blocks corresponding to a moving image and to turn off the portions of the light source blocks corresponding to a still image based on the light source driving control signal.

Liquid crystal display and driving method thereof

A folding analog-to-digital converter (ADC) is disclosed. The folding ADC includes a reference voltage generating unit generating a plurality of reference voltages, a low power analog pre-processing unit including a plurality of folders, each of which compares a voltage level of an analog input signal with a corresponding reference voltage of the plurality of reference voltages to generate a pair of differential folded outputs, a comparison unit that compares outputs of the low power analog pre-processing unit to output a digital signal, and an encoding unit that converts an output of the comparison unit into a binary code signal.

Folding analog-to-digital converter

A digital-to-analog converter is disclosed. The digital-to-analog converter includes a decoder that receives a plurality of digital input signals to output a plurality of thermometer decode signals, a current supply part including a plurality of current sources, each of which operates in one of a sleeping mode and an operating mode under the control of the thermometer decode signals, and a switching part including a plurality of switching units, each of which operates in one of a sleeping mode and an operating mode under the control of the thermometer decode signals. The current supply part selectively outputs a plurality of switching power signals. The switching part outputs an analog signal under the control of the thermometer decode signals.

Growing community of inventors

Gyeonggi-do, South Korea

Injae Chung