Lg Display Co., Ltd.

Korea Advanced Institute of Science and Technology

HeeJung Hong

Daeho Cho

Dongwon Park

Byoungchul Cho

Changkyun Park

Dongwoo Kim

Joonhee Lee

Kyungjoon Kwon

Yongchul Kwon

Jongmin Park

Heewon Ahn

Miok Kim

HyungJoon Koo

Dong-Woo Lee

Younghwan Ahn

Hyeseon Eom

Jongwon Yu

SungGae Lee

NamKon Ko

JinWoo Cha

Sooji Lee

Kyoungsub Oh

Hyungseok Cha

A display device and a method of driving the same. The display device includes a display panel on which a plurality of data lines and a plurality of gate lines intersect each other to form a matrix, with a number of pixels being defined at intersections of the plurality of data lines and the plurality of gate lines. A data driver is connected to the plurality of data lines. A gate driver is connected to the plurality of gate lines. A timing controller controls the display panel to operate in a driving mode that changes depending on image signals.

Device for changing driving frequency

Disclosed is an organic light emitting diode (OLED) display that includes a display panel including a plurality of gate lines and a plurality of data lines crossing each other to define a plurality of pixels, each pixel including a driving transistor, a switching transistor, an OLED and a storage capacitor; a timing controller that receives pixel data of an input image and timing signals and time-divides a period of one frame into at least a driving sub-frame and a compensation sub-frame based on one or more of the timing signals; and a display panel driver that converts the pixel data into data voltages and supplies the data voltages to the plurality of data lines during the driving sub-frame, and that adjusts compensation gray levels of the plurality of pixels or compensation duties of the plurality of pixels based on a luminance map, which contains information on a luminance deviation for each pixel with respect to a same gray level, during the compensation sub-frame.

Organic light emitting diode display and method for driving the same

A liquid crystal display device is configured to create an aesthetic effect while on low power by performing a single color driving operation in standby mode. The liquid crystal display device further includes a standby mode controller which is provided in the timing controller, in addition to the usual data driver, and runs in standby mode to perform the standby mode function with minimum power consumption.

Liquid crystal display device with a standby mode controller for storing a standby screen image

Embodiments relate to selectively sensing device characteristics of pixels in a sensing period. Input image displayed on a display panel is analyzed to determine the complexity or gray level difference in different portions of the input image. Based on analysis, the portions of the display panel likely to result in significantly difference in device characteristics are selected with smaller intervals but portions of the display panel likely to experience the same or similar device characteristics are selected with larger intervals. The device characteristics of only the selected pixels are sensed in a sensing period while the remaining pixels are estimated based on the sensed device characteristics.

Organic light emitting diode display and method for sensing characteristic thereof

A slot antenna and an information terminal apparatus using the same are provided. The slot antenna comprises: a conductive housing; and at least one slot formed on the corner and edge of the conductive housing.

Slot antenna and information terminal apparatus using the same

A local dimming method and a liquid crystal display using the same are provided. The local dimming method includes segmenting an input image into N&#xd7;M (where N and M are positive integer greater than n) blocks; determining representative values of the blocks, which define average luminance of the respective blocks; analyzing the input image; setting a spatial filter mask having a size of n&#xd7;n (where n is a positive integer greater than 3 and equal to or smaller than 10), increasing the number of coefficients greater than 0 in the spatial filter mask when the input image is determined as a dark image, and decreasing the number of coefficients greater than 0 in the spatial filter mask when the input image is determined as a bright image; and multiplying the block representative values by coefficients of the spatial filter mask to determine a dimming value for each block.

Local dimming method and liquid crystal display

A wireless display sink device comprises a display panel driver and a PCB (Printed Circuit Board) connected to a wireless communication module. The PCB comprises: a decoder that decodes audio/video data received from the wireless communication module and separates audio data and video data; an audio DAC (Digital Analog Converter) that converts the audio data into an analog voltage; and a timing controller that transmits the video data to the display panel driver and controls the operation timing of the display panel driver.

Wireless display sink device

A special mode processor drives a display panel to display an image. When the display panel is configured to operate in a special operation mode, the special operation mode processor determines a pixel block size for blocking the plurality of pixels into a plurality of pixel blocks and determines a first set of on-pixels and a first set of off-pixels. The first set of on-pixels is initially turned on and the first set of off-pixels is initially turned off. A drive history representative value is generated for the first group of pixels that represents a drive time and drive characteristic for the first group of pixels. The drive history representative value is compared with a threshold value. Responsive to the drive history representative value exceeding the threshold value, a second set of on-pixels and a second set of off-pixels are turned on and off respectively.

Display device and method for driving the same

A method of compensating for pixel data includes extending a side portion and a corner portion of a real screen to set an virtual screen, setting dimming values of the virtual screen using dimming values of the real screen, calculating an amount of light of each of pixels on the real screen using the dimming values of the virtual screen mapped to a predetermined analysis area, and multiplying the amount of light of each pixel by a gain of each pixel to modulate pixel data.

Method of compensating for pixel data and liquid crystal display

An image processing unit, a stereoscopic image display using the same, and an image processing method are disclosed. The image processing unit includes a data modulation unit, that receives 3D image data including left eye image data and right eye image data, compares a pixel data of the left eye image and a pixel data of the right eye image corresponding to the same coordinate of the previously set mask with each other, calculates the number of cases where a difference between the same pixel data of the left eye image data and the right eye image data is equal to or greater than a predetermined threshold value, and modulates the pixel data of the left eye image and the pixel data of the right eye image inside the mask using a first coefficient group of the mask when the number of cases is greater than a predetermined value.

Image processing unit, stereoscopic image display using the same, and image processing method

A liquid crystal display and a local dimming control method thereof are discussed. The liquid crystal display includes a liquid crystal display panel selectively displaying a 2D image and a 3D image in response to a mode signal, a backlight unit including a plurality of light sources, a backlight driving circuit individually driving a plurality of previously determined blocks each including the light sources based on a dimming value of each block, and a local dimming control circuit, that calculates a pixel gain value based on a dimming value of each block in a first frame, applies the pixel gain value to a data compensation for a second frame, which is arranged later than the first frame, and varies a time point when the pixel gain value for the data compensation is applied in response to the mode signal.

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Seoul, South Korea

HeeJung Hong