Lg Display Co., Ltd.

Joonyoung Park

Euitae Kim

Jeongki Lee

Hyeonho Son

JeongKi Kim

Jeongki Kim

Hanseok Kim

Jaewoo Park

JuSeong Park

Seungho Baek

Dongjun Choi

Jooah Kim

KiDuk Kim

Changho Lee

HanSeok Kim

Kwangjo Hwang

Keongjin Lee

Myungsoo Park

ChangHo Lee

TaeUk Kang

Minsung Yoon

Yongwoo Choi

Wooyoung Choe

JaeWoo Park

Eunkyung Seong

Joonha Park

An autostereoscopic three-dimensional (3D) display in which the multi view structure is configured by using the lenticular lens. The autostereoscopic 3D display can include a display panel including a plurality of pixels; a plurality of lenticular lens disposed on a front surface of the display panel and having a slanted axis; a position detector measuring the distance of an observer from the display panel; and a view-map selector selecting one of view-maps in accordance with the distance of the observer from the display panel.

Autostereoscopic 3-dimensional display

An apparatus for displaying a hologram comprises: a hologram display panel that represents light having the hologram images to an observer; a detecting camera that decides a position of the observer; a deflector that forms a prism pattern to refract the light corresponding to the detected position of the observer; and a deflector driver that supplies a driving voltage corresponding to a inclined angle for forming the prism pattern, wherein the deflector includes: a plurality of first electrodes running to a first direction and divided into a plurality of electrode groups; a plurality of connection electrodes running to a second direction crossing with the first direction, and connecting same numbered first electrodes of the electrode groups, wherein each end of the connection electrodes forms a pad portion; and a second electrode facing to the plurality of the first electrodes with a liquid crystal cell therebetween.

Apparatus for displaying a hologram

Provided is an image display device having a display panel and a light source that may include a light path conversion sheet on the display panel; and a reflecting plate on the light path conversion sheet, the reflecting plate reflecting a light emitted from the light source, wherein the light path conversion sheet directs the light reflected from the reflecting plate toward the display panel.

Backlight and image display device using the same

Embodiment relate to a display panel that modulates 3D image data based on pixel data of adjacent lines. The display panel includes data lines, gate lines, and a plurality of pixels; a data modulation unit. The modulation unit modulates kth pixel data of a jth line in 3D image data based on the kth pixel data of the jth line and kth pixel data of a line adjacent to the jth line. The data driving circuit converts the modulated 3D image data into analog data voltages and outputs the analog data voltages to the data lines. A gate driving circuit sequentially outputs gate pulses to the gate lines.

Stereoscopic image display device and method for driving the same

A stereoscopic image display device comprises a frame rate conversion unit that divides 3D input data into left eye image data and right eye image data, inserts reset frame data containing black grayscale data between the left eye image data and the right eye image data, and generates the (n+1)-th frame data to the (n+4)-th frame data containing the left eye image data, the black grayscale data, the right eye image data, respectively, and the black grayscale data, a look-up table that stores local dimming values used to control brightness for the overall local dimming zones to the minimum during the (n+2)-th and (n+4)-th frame periods, and local dimming values used to control brightness for each local dimming zone to target brightness during the (n+1)-th and (n+3)-th frame periods, and a backlight controller that controls light source brightness of the backlight unit for each local dimming zone.

Stereoscopic image display and method of controlling backlight thereof

The stereoscopic image display includes a control voltage generator and a control voltage compensator. The control voltage generator generates a discharge control voltage to be applied to a discharge control line at a slight-on level, which is higher than a gate low voltage and is lower than a gate high voltage, and periodically reduces the discharge control voltage to a level of the gate low voltage in the 3D mode. The control voltage compensator receives the discharge control voltage from the control voltage generator, amplifies a feedback discharge control voltage supplied from a first part of a display panel based on the received discharge control voltage, and applies the amplified feedback discharge control voltage, as a compensated discharge control voltage, to a second part opposite the first part of the display panel.

Driving method to improve stereoscopic image display visibility

A stereoscopic image display and a driving method thereof are discussed. The stereoscopic image display includes a data driving circuit that supplies a data voltage to data lines of a display panel; a gate driving circuit that supplies a gate pulse to gate lines of the display panel; and a timing controller that controls operation timings of the data driving circuit and gate driving circuit. The gate driving circuit delays a rising timing of the gate pulse to a point in time after a rising edge time of the data voltage in a 3D mode for displaying a 3D image on the display panel, under a control of the timing controller.

Stereoscopic image display and driving method thereof

A stereoscopic image display and a method for driving the same are disclosed. The stereoscopic image display includes a display panel displaying a two-dimensional (2D) image data in a 2D mode and displaying a three-dimensional (3D) image data in a 3D mode, a gamma reference voltage generating circuit that generates first gamma reference voltages and second gamma reference voltages different from the first gamma reference voltages, outputs the first gamma reference voltages in the 2D mode, and outputs the second gamma reference voltages in the 3D mode, and data driver that converts the 2D image data into the first gamma reference voltages in the 2D mode and converts left eye image data and right eye image data into the second gamma reference voltages in the 3D mode.

Stereoscopic image display and method for driving the same

An image display device includes a display panel which selectively displays a 2D image and a 3D image and includes a plurality of pixels, a patterned retarder for dividing light from the display panel into first polarized light and second polarized light, and a control voltage generation circuit which generates a 2D control voltage at an off-level and generates a 3D control voltage alternately having a slight-on level and the off-level every predetermined period of time. The slight-on level is higher than the off-level and is lower than a full-on level. Each pixel includes a main display unit including a first pixel electrode and a first common electrode and a subsidiary display unit including a second pixel electrode, a second common electrode, and a discharge control switch.

Image display device capable of switching for 2D mode and 3D mode

A stereoscopic image display device comprises a display panel; a panel driving unit configured to address left eye image data in all pixels of the display panel during a data addressing period set in an N-th (where N is a natural number) frame period and adjust voltages of all the pixels of the display panel to a black grayscale voltage during a black grayscale inserting period set in the N-th frame period, address right eye image data in all the pixels of the display panel during a data addressing period set in a (N+1)-th frame period and adjust voltages of all the pixel of the display panel to the black grayscale voltage during a black grayscale inserting period set in the (N+1)-th frame period; and a controller configured to supply the left eye image data, and the right eye image data to the panel driving unit and control operation timings of the panel driving unit.

Stereoscopic image display device and driving method thereof

The present application relates to method of driving an image display device comprising inserting a black data frame displaying black data between neighboring data frames alternately displaying left-eye data and right-eye data; comparing an nth frame corresponding to a current frame and an (n&#x2212;2)th frame corresponding to a previous frame with each other when the data frames are input, reading a compensation value according to the comparison result from a lookup table and modulating input data of the nth frame using the read compensation value to output a modulated data; and bypassing data corresponding to the black data without modulating the data when the black data is input to output a bypass data, the application also relates to said image display device.

Image display device and driving method thereof

A method of driving a 3D image display device includes according to an embodiment receiving 3D data and separating a 3D input frame including the 3D data into a left-eye data frame and a right-eye data frame; doubling the left-eye data frame into the original left-eye data frame and a copied left-eye data frame and doubling the right-eye data frame into the original right-eye data frame and a copied right-eye data frame; and modulating the original left-eye data frame to a first modulated left-eye data frame based on the copied right-eye data frame arranged prior to the original left-eye data frame, modulating the copied left-eye data frame, and the copied right-eye data frame.

3D image display device and driving method thereof

A method of driving an image display device comprises inserting a reset frame displaying black data between neighboring data frames alternately displaying left-eye data and right-eye data; reflecting gray-scale information of an (n&#x2212;2)th data frame in a reset frame corresponding to an (n&#x2212;1)th frame through a predetermined data calculating operation; detecting a data variation between the (n&#x2212;1)th reset frame and an nth data frame, reading a compensation value corresponding to the detection result from a lookup table, and modulating input data of the nth data frame using the read compensation value; and inverting the polarity of the modulated data according to N frame inversion (N is a multiple of 4) and applying the data having the inverted polarity to a display panel.

A data modulation method, comparing left eye image data during a (4N+1)-th frame period with previous frame data, selecting a preliminary modulation value for a left eye image, preliminarily modulating the left eye image data during the (4N+1)-th frame period to reach the preliminary modulation value for the left eye image, and secondarily modulating left eye image data during a (4N+2)-th frame period to reach the preliminary modulation value for the left eye image or a modulation value smaller than the preliminary modulation value.

Data modulation method and liquid crystal display device using the same

A stereoscopic image display and a method for driving the same are disclosed. The stereoscopic image display includes a display panel that displays a two-dimensional (2D) image data in a 2D mode and display a three-dimensional (3D) image data in a 3D mode, a backlight unit providing light to the display panel, a backlight controller that reduces a duty ratio of the backlight unit in a 3D mode lower than a duty ratio set in the 2D mode, and increases a forward current supplied to light sources of the backlight unit in the 3D mode greater than a forward current set in the 2D mode, and a light source driver driving the light sources of the backlight unit.

Growing community of inventors

Paju-si, South Korea

Joonyoung Park