Lg Display Co., Ltd.

Kyocera Corporation

Shinji Takasugi

Taro Hasumi

Kaoru Kusafuka

Ryosuke Tani

Min Kyu Chang

Byung Chul Ahn

Shinichi Abe

Chang Wook Han

Yoshinao Kobayashi

Hong Seok Choi

Shinya Ono

Yoon Heung Tak

Joonmin Park

Woo Jin Nam

Hwa Kyung Kim

Hyo Jin Park

Yoshiki Nakamura

Naoyuki Nakanishi

Jong Ho Lee

Woojin Nam

Jaeyi Choi

Minkyu Chang

Jong Sik Shim

Chang Ho Oh

Jeong Pyo Lee

Joong Sun Yoon

Keigo Kanoh

Motohiko Asano

Kyunghyun Cho

Min-Kyu Chang

Hyun-Jong Ji

Kohei Ebisuno

Jeong-pyo Lee

Osamu Tokuhiro

Yutaka Kuba

Chang Woo Seok

Daisuke Ota

Wooseok Choi

Hiromutsu Ogawa

Hae Yoon Kang

Ki Moon Jung

Mi Hee Uhm

Sung-Woo Park

Hyo-Jin Park

Jeong-Hyo Park

A display control device for controlling a display device including a display panel having a plurality of pixels arranged in rows and columns includes: a first driving unit supplying a data voltage corresponding to a luminance to the pixels by the columns; and a second driving unit selecting the pixels receiving the data voltage by the rows, wherein the first driving unit and the second driving unit, in one frame: sequentially supply the data voltage for an image display to the pixels of a first block including a first group of the rows; supply a black level voltage to the pixels of a second block including a second group of the rows; and supply the black level voltage to the pixels in at least one of the rows of the first block while the black level voltage is supplied to the pixels of the second block.

Display control device, display device and method of controlling display device

A display control device includes: an input part receiving an input signal including gray levels of the first color, the second color and the third color constituting a color for each of the plurality of pixels; a selection part selecting at least one of the plurality of pixels as a selection pixel and other of the plurality of pixels as a non-selection pixel; and an output part outputting an output signal controlling luminances of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel based on the input signal, wherein at least one of the first sub-pixel, the second sub-pixel and the third sub-pixel of the non-selection pixel is controlled to have a luminance of 0 according to the output signal, and wherein the fourth sub-pixel of the selection pixel is controlled to have a luminance of 0 according to the output signal.

A display control device includes: a display processing part displaying an image in a display unit; and a movement processing part changing a display position of the image according to a display time of the image within a movement range having a reference display position of the image in the display unit as a center, wherein the movement processing part changes the display position within the movement range such that an accumulated display time of the image is reduced from the center to a periphery of the movement range.

Display control device and method of controlling display device

A light emitting display device, includes: a plurality of pixels arranged in a matrix form, each of the plurality of pixels including: a light emitting element in which a light emitting diode is between an anode and a cathode; a light emission transistor, one of a source or a drain of the light emission transistor is connected to the anode; a driving transistor, one of a source or a drain of the driving transistor is connected to the other of the source or the drain of the light emission transistor; and an initialization transistor which is configured to connect a gate of the driving transistor, the one of the source or the drain of the driving transistor, and the anode, the anode being connected to an initialization voltage line of a fixed voltage at a same time, wherein initialization transistor has a resistance greater than the driving transistor.

Light emitting display device

Provided is a light emitting display device and a method of driving the same. The light emitting display device includes: a display panel in which pixel lines including a plurality of pixels are divided into at least one area A and at least one area B; a panel driver connected to the pixel line; and a timing controller for controlling operation of the panel driver to perform image data writing (IDW) driving for sequentially writing input image data to a plurality of pixel lines included in one of the area A and the area B and to perform sensing data writing (SDW) driving for writing sensing data to a pixel line included in one of the area A and the area B in a vertical blank period in which image data writing driving is not performed. The timing controller writes coupling compensation data during the vertical blank period. According to the present disclosure, a device can be realized in consideration of a sensing deviation that may be generated in a compensation operation for improving deterioration of elements included in a display panel and increasing the lifespan thereof.

Light emitting display device and driving method thereof

An organic light emitting display (OLED) device comprises: a display panel including a substrate, a plurality of data lines on the substrate, a plurality of gate lines on the substrate and oriented transverse to the data lines, and a plurality of pixels connected to the data lines and the gate lines. A data driver supplies data voltages to the data lines, and a gate-in-panel (GIP) gate driver supplies gate pulses to the gate lines. The gate driver drives the display panel in a plurality of blocks of pixel lines within one frame. The data voltages are sequentially supplied to pixel lines of a jth block (j is a natural number) during a data writing period, and a black image is written simultaneously to pixel lines of a qth block (q is a natural number different from j) during a black data insertion period.

Gate-in-panel gate driver and organic light emitting display device having the same

Provided is a display device including a display panel, a data driver, a gate driver, and a timing controller. The display panel includes first and second pixel line groups each including k (k is a natural greater than 1) pixel lines, and each of the pixel lines includes a plurality of pixels connected to the same gate line. The data driver supplies an image data voltage to the pixels on the basis of input image data. The gate driver supplies a gate pulse to the gate line. The timing controller controls a driving timing of the data driver and the gate driver, sequentially writes the image data voltage into pixel lines belonging to the first pixel line group during an image data write period and simultaneously writes a black data voltage into pixel lines belonging to the second pixel line group during a black data insertion (BDI) period. The timing controller changes an interval between timings for writing the black data voltage from a start timing of a frame on a frame-by-frame basis.

Display device having black image inserting function

Provided is a gate shift register having multiple stages including a plurality of scan clock lines supplying scan shift clocks having different phases required for generating a scan control signal to the stages, and a plurality of shared carry clock lines supplying carry shift clocks having different phases required for generating a carry signal to the stages, wherein the number of the shared carry clock lines is half of the number of the scan clock lines and each of stage pairs including an odd-numbered stage and an even-numbered stage adjacent to each other share one carry shift clock.

Gate shift register and organic light emitting display apparatus including the same

A gate shift register and an organic light emitting diode display including the same are disclosed. The gate shift register includes a first stage and a second stage that output image display gate pulses during an image data writing period and selectively output a sensing gate pulse in a vertical blanking interval in which image display data is not written. The first stage includes a node Q, a node Qbo, a node M, a first sensing control block activating the node Q, and a second sensing control block deactivating the node Qbo. The second stage includes a node Q, a node Qbe, a third sensing control block activating the node Q, and a fourth sensing control block deactivating the node Qbe. The first stage and the second stage share a partial circuit necessary for driving with each other.

Gate shift register and organic light emitting diode display including the same

Provided are a method of manufacturing an organic light emitting display device and an organic light emitting display device manufactured by the method. The method includes calculating a peak-luminance current density for each of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, calculating an average use current density for each of the red sub-pixel, blue sub-pixel, green sub-pixel, and white sub-pixel; determining a size of each sub-pixel with the peak-luminance current density and the average use current density, and forming the sub-pixels with the determined sizes of the respective sub-pixels. The present invention sets the size of each sub-pixel in consideration of a peak-luminance current density and an average use current density, thus easily achieving the peak luminance and enhancing the color-coordinate life.

Organic light emitting display device and method of manufacturing the same

An image display device including a light-emitting element configured to emit light corresponding to a current flowing therethrough; a driving element that is connected to the light-emitting element and configured to control light emission of the light-emitting element; and a control unit configured to apply a reverse bias voltage to a first n-type driving element whose the threshold voltage determined at a specific time is equal to or higher than a positive predetermined voltage level for shifting the threshold voltage of the first n-type driving element in a negative direction, and not apply the reverse bias voltage to a second n-type driving element whose the threshold voltage determined at the specific time is lower than the positive predetermined voltage level for shifting the threshold voltage of the second n-type driving element in a positive direction when the light-emitting element does not emit light.

Image display device and driving method of the same

An organic light emitting display includes a data driver supplying a sensing data voltage in a sensing mode to prevent degradation of image quality occurring due to a kick-back phenomenon. Each pixel of a display panel of the organic light emitting display has its driving characteristic sensed in the sensing mode. The data driver is configured to supply a high driving voltage, which is higher than the supplied sensing data voltage, and both voltages are successively applied to a data line of the display panel in the sensing mode.

Organic light emitting display having data driver supplying sensing data voltage in a sensing mode

Disclosed is a display apparatus. The display apparatus performs external compensation by using sensing data generated through actual sensing and calculation data which is calculated based on the sensing data with a median filter.

Organic light emitting display apparatus performing a sensing for an external compensation

A panel defect detection method and an organic light emitting display device. A region having a high probability of a panel defect is intensively sensed through panel defect detection based on sensing results of characteristic values according to subpixels on sensing subpixel lines in an amount equal to the number of sensing subpixel lines preset in specific regions rather than all regions of a display panel. Rates and accuracy in detection of panel defects can be improved.

Panel defect detection method and organic light-emitting display device using the same

An organic light emitting display device includes a display panel including a plurality of pixels, wherein each pixel includes a driving transistor outputting a data current based on a data voltage to emit light from an organic light emitting diode; and a panel driver which drives the display panel in a sensing mode and a display mode, wherein the panel driver calculates a threshold voltage prediction value of the driving transistor for each pixel by sensing a mobility and a threshold voltage of the driving transistor for each pixel through a reference line connected with a sensing node between the driving transistor and the organic light emitting diode of each pixel for the sensing mode, and the panel driver drives each pixel based on the threshold voltage prediction value of the driving transistor of each pixel for the display mode.

Organic light emitting display device

Growing community of inventors

Paju-si, South Korea

Shinji Takasugi