Lg Display Co., Ltd.

Jooah Kim

Jeongki Kim

Seungho Baek

JeongKi Kim

Joonyoung Park

Euitae Kim

Kwangjo Hwang

JuSeong Park

ChangHo Lee

Wooyoung Choe

A stereoscopic image display includes a display panel; a polarization control panel that is positioned on the display panel and controls the polarization direction of light incident from the display panel; a lens panel positioned on the polarization control panel and having a plurality of lens shaping portions; a first driver for driving the display panel; a second driver for supplying a driving voltage to the polarization control panel; a timing controller for controlling the first driver and the second driver; and a sensing unit that senses the driving voltage supplied to the polarization control panel and outputs a decision signal for deciding whether the sensed driving voltage is in normal condition or abnormal condition.

Stereoscopic image display and method of driving the same

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 includes a liquid crystal display panel including a plurality of pixels, each of which is divided into a main pixel unit and an switchable black stripe, a data driving circuit, a gate driving circuit, and a 3D control voltage generation circuit, which supplies AC voltages, of which phases are sequentially shifted, to a plurality of 3D control lines in a 3D mode.

Stereoscopic image display

A digital hologram image reproducing device includes a light modulator reproducing a hologram interference fringe image, a first panel driving circuit which scans a first display panel and writes data of the hologram interference fringe image to the first display panel, a first timing controller controlling an operation timing of the first panel driving circuit, a second panel driving circuit which scans a second display panel and writes data of the hologram interference fringe image to the second display panel, a second timing controller controlling an operation timing of the second panel driving circuit, and a panel synchronization circuit which simultaneously transfers a polarity control signal received from one of the first and second timing controllers to the first and second panel driving circuits.

Digital hologram image reproducing device and synchronization control method thereof

A stereoscopic image display includes a display panel which includes a plurality of pixels each including a main display unit and an auxiliary display unit, is divided into a first screen block and a second screen block, and includes a first discharge control line connected to auxiliary display units of the first screen block and a second discharge control line connected to auxiliary display units of the second screen block, a control voltage generator which generates a first discharge control voltage of a first AC waveform and a second discharge control voltage of a second AC waveform, of which a phase is later than a phase of the first AC waveform by a half frame period, and a control voltage delay unit which delays the first and second discharge control voltages.

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.

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Seoul, South Korea

Jooah Kim