Lg Display Co., Ltd.

Lg Philips Lcd Co., Inc.

Ki Duk Kim

Eui Yeol Oh

Jong Hee Hwang

Min Ho Sohn

Hyun Ho Shin

Sung Yong Cho

Eun Jung Kim

Seong Ho Baik

Sun Young Kim

In Jae Chung

Hee Jeong Park

Tae Ho You

Chul Sang Jang

Bo Gun Seo

Jung Hee Kim

Ki Seon Kim

Ji Eun Son

Jae Kyeong Yun

Jong Hyun Han

Hyun Seok Kim

Seung Seok Oh

Embodiments relate to a touch panel and a method of operating the touch panel. The touch panel includes first electrodes and second electrodes separated from and intersecting the first electrodes. The first electrodes are applied with a touch driving pulse during a first sensing mode and a second sensing mode. The second electrodes sense a first touch sense signal responsive to the touch driving pulse in the first sensing mode. A subset of the second electrodes senses a second touch sense signal responsive to the touch driving pulse in the second sensing mode.

Touch panel and apparatus for driving thereof

Disclosed is a mobile terminal device in which a locking mode is released based on a touch intensity in order to prevent an unlocking operation by an unintended touch, and a driving method thereof, wherein the driving method includes detecting a touch intensity for each touch when a plurality of touches occur in a locking mode, and releasing the locking mode on the basis of the plurality of touch intensities detected, or executing a function corresponding to the plurality of touch intensities detected.

Mobile terminal device and driving method thereof

One embodiment of a touch panel comprises a substrate; a sensing electrode formed over the substrate, the sensing electrode configured to sense finger touch input and to provide haptic feedback; and an antenna formed over the substrate, the antenna configured to sense pen touch input; wherein a first mode in which the finger touch input is sensed, a second mode in which the haptic feedback is provided, and a third mode in which pen touch input is received are time-divisionally performed.

Touch panel

An optical touch display device which is advantageous in high-speed driving, large-area touch sensing, and multi-touch sensing because of use of an image map and which can improve touch sensing performance and a driving method thereof are provided. The optical touch display device includes a display device configured to display a display image based on input source image data and an image map for touch sensing, an optical touch pen configured to detect map information of the image map displayed on the display device, and a position detector configured to detect position information (coordinate information) on a screen based on the map information.

Optical touch display device and driving method thereof

A liquid crystal display device includes a liquid crystal panel, a timing controller, a compensation unit and a panel drive circuit. The liquid crystal panel has a plurality of color pixels, each of the color pixels including two sub-pixels which represent two different colors. The timing controller generates a sub-pixel data stream of two sub-frame format. The sub-pixel data stream of two sub-frame format includes a first sub-pixel data for a first sub-frame and a second sub-pixel data for a second sub-frame. The first sub-pixel data and the second sub-pixel data have different gamma characteristics. The compensation unit is operable to compensate the first sub-pixel data and the second sub-pixel data with different rates. The panel drive circuit drives the sub-pixels on the liquid crystal panel and supplies the sub-pixels with the compensated first sub-pixel data for the first sub-frame and the compensated second sub-pixel data for the second sub-frame.

Liquid crystal display device for compensating a pixel data in accordance with areas of a liquid crystal display panel and sub-frames, and driving method thereof

An LCD device adapted to improve its picture quality in spite of the brightness variation includes: a gray scale modulator modulating R, G, and B data; a backlight dimming controller generating a back dimming signal that is inversely proportional to the modulated R, G, and B data generated in the gray scale modulator; and an over driving controller selectively overshoot-compensating the R, G, and B data from the gray scale modulator in every gray scale level through the comparison of the R, G, and B data of current frame and the R, G, and B data of previous frame, wherein, the modulated R, G, and B data each include maximum gray scale levels lower than those of the overshoot compensated R, G, and B data.

Liquid crystal display device for improving picture quality and driving method thereof

Provided is a liquid crystal display device that can improve the image quality of a moving image. The liquid crystal display device includes a driver, a backlight unit, a first lamp driver, a second lamp driver, and a lamp driving controller. The liquid crystal panel divided is into at least three regions, and has a plurality of lamps arranged to correspond to each of the divided regions. Lamps of the lamps arranged in upper and lower regions of the liquid crystal panel are connected to each other. The first lamp driver controls on/off times of the lamps in the upper and lower regions of the liquid crystal panel. The second lamp driver controls on/off times of the lamps in the region excluding the upper and lower regions of the liquid crystal panel. The lamp driving controller controls the first and second lamp drivers using signals supplied from the driver.

Liquid crystal display device and method for driving the same

Provided are a liquid crystal display device capable of improving motion image quality and a method for driving the same. The liquid crystal display device according to an embodiment of the present invention includes an input unit, an overdriving compensation unit, a selection unit, and a data selection control unit. The input unit supplies pixel data to a pixel of a liquid crystal panel. The overdriving compensation unit outputs overdriving compensation pixel data using the pixel data input from the input unit. The selection unit selects one of the pixel data input from the input unit and the overdriving compensation data input from the overdriving compensation unit. The data selection control unit detects whether the pixel data input from the input unit is motion image data to control the selection unit.

Liquid crystal display device and method for selecting overdriving when the pixel data is motion image data

An apparatus and a method of driving a liquid crystal display device include receiving gamma-treated data, performing a reverse gamma correction of the data, the reverse-gamma-corrected data having a first linear characteristic, performing a signal processing of the reverse-gamma-corrected data having the first linear characteristic, performing a gamma correction of the processed data, and generating data signals based on the gamma-corrected data using analog voltage values, the data signals having a second linear characteristic.

Method and apparatus for driving liquid crystal display

A method of driving a liquid crystal display device includes extracting brightness components of a portion of the first data for a current frame, arranging the brightness components for the current frame into a brightness histogram, retrieving brightness histograms for at least two frames prior to the current frame to generate an average histogram, generating second data for the current frame based on the average histogram, comparing the histogram for the current frame with the average histogram to determine whether an image at the current frame is a moving image or a still image, and driving the liquid crystal display device in accordance with one of the first data and the second data based on the comparison result.

Method and apparatus for driving liquid crystal display device

Provided is an LCD device. The LCD device includes: an input unit, a backlight unit, a histogram analyzing unit, a data correcting unit, a liquid crystal panel driving unit, a duty ratio determining unit, and a lamp driving unit. The input unit inputs data corresponding to an image displayed on a liquid crystal panel, and the backlight unit includes a plurality of lamps. The histogram analyzing unit analyzes a histogram of data input from the input unit to generate a select signal according to a brightness state of the data. The data correcting unit corrects pixel data to be supplied to the liquid crystal panel using at least one of a plurality of gamma compensating characteristic curves. The liquid crystal panel driving unit drives the liquid crystal panel. The duty ratio determining unit generates a plurality of lamp-on signals. The lamp driving unit generates a lamp driving voltage corresponding to the lamp-on signal.

Liquid crystal display device and driving method thereof

An over-driving look-up table automatic setting apparatus for a liquid crystal display device includes: an input device that specifies a critical response condition for a liquid crystal display device; a sensor that detects an amount of light from the liquid crystal display device and that generates a signal corresponding to the amount of light; a response state detecting unit that measures the response state from the signal generated by the sensor; a controller that receives the response state for gray scale differences from each of a plurality of gray scale values to determine transient pixel data producing a response state that satisfies the critical response condition and that sets an over-driving look-up table by mapping the transient pixel data to corresponding gray scale difference values for each gray scale value; and a memory that stores the over-driving look-up table.

Apparatus for automatically setting over-driving look-up table for liquid crystal display device and control method thereof

A backlight unit enables an LCD to realize five primary colors using a four sub-pixel structure. The backlight unit includes at least one fluorescent lamp of white color, at least one light source of yellow color, and at least one light source of cyan color. Alternatively, the backlight unit includes at least one first fluorescent lamp of white color having R, G, and B wavelengths, and second or/and third fluorescent lamps provided in between the adjacent first fluorescent lamps. The second fluorescent lamp is coated with yellow pigment, and the third fluorescent lamp is coated with cyan pigment.

Growing community of inventors

Gyeonggi-do, South Korea

Ki Duk Kim