Lg Electronics Inc.

Lg Display Co., Ltd.

Seonghak Moon

Byeongkil Ahn

Taehyung Kim

Junhak Lee

Byungsoo Song

Seunghyun Woo

SungChul Kim

Seonghyok Kim

Namjin Kim

Kangmin Kim

Janghwan Cho

Chaedeok Lee

Kihyung Kim

Kichu Hong

Youngjoon Lee

Daehun Kim

Kangsun Lee

Hyekyoung Seo

Oedong Kim

Myungjae Jeon

Victor Pushchin

Munbong Song

Byungchun Yu

Svetlana Volodkina

Joongmin Ra

Daejin Myoung

Jongwoon Kwak

A composite sensor for sensing gas and dust by using a single heat source, according to an embodiment of the present invention, can comprise: a base; a gas sensor module comprising a gas sensor and a first light source in a first space; a dust sensor module comprising a dust sensor, a lens, and a second light source in a second space; and a heat transfer wall for transferring heat generated by the first light source to the dust sensor module.

Composite sensor for sensing gas and dust by using single heat source

The present invention provides a robot cleaner comprising: a main body which forms an outer appearance; a driving unit for moving the main body; a cleaning unit, installed at the lower portion of the main body, for sucking filth or dust on a floor surface or in the air; light emitting units which are installed at the lower portion of the main body and configured to externally emit light according the driving condition of the driving unit; and a controller for controlling the plurality of light emitting units so that the light emitting units emit light in forms different from each other according to each of a first driving condition where the main body is stopped, a second driving condition where the main body moves, and a third driving condition where the main body rotates.

Robot cleaner

An apparatus and method for measuring 3-dimensional (3D) interocular crosstalk is disclosed. A light sensor detects luminance of a stereoscopic image displayed in a display and outputs a luminance value indicating the detected luminance. A controller calculates 3D interocular crosstalk based on a gray difference and a residual luminance ratio.

Apparatus and method for measuring 3-dimensional interocular crosstalk

A touch display device may include an organic light emitting diode (OLED) display panel that includes scan lines, data lines, and OLED cells, and a driver to display a touch position on a screen (of the OLED display panel) in a frame that includes a touch subfield. The driver may supply at least one scan sync signal to the scan lines and supply at least one data sync signal to the data lines during one frame. The touch subfield may include a vertical touch subfield to detect a vertical position of the touch position and a horizontal touch subfield to detect a horizontal position of the touch position.

Touch display device having a driver to provide a scan synchronization signal and a data synchronization signal

A touch panel includes: a substrate; a plurality of light emitting elements; and a plurality of light receiving elements, wherein the number of light receiving elements may be greater than the number of light emitting elements.

Touch panel, method for driving touch panel, and display apparatus having touch panel

An image display device, a 3D viewing device, and a method for operating the same are provided. The method includes receiving a synchronization signal from an image display device, alternately opening a left glass and a right glass according to the synchronization signal, and simultaneously opening the left glass and the right glass in a left-eye image display period or a right-eye image display period of a 3D image displayed on the image display device when a period of the synchronization signal has changed. This ensures that a user reliably (or correctly) views 3D or 2D images using the 3D viewing device.

Image display device, 3D viewing device, and method for operating the same

There are provided an image display apparatus having a display unit capable of sensing a touch made by a pointing device, and a method for operating the same. The method includes outputting a synchronous signal through the entire region of the display unit, transmitting a first scanning signal and a second scanning signal respectively scanning the display unit in a first direction and a second direction to the pointing device; and acquiring touch position information regarding a touch made by the pointing device by using touch time information regarding time points when the pointing device receives the first scanning signal and the second scanning signal after sensing the synchronous signal. Accordingly, an error in touch recognition caused by the delay of a synchronous signal can be minimized.

Image display apparatus and method of operating the same

A display apparatus is disclosed. The display apparatus includes a display panel that displays at least one of a two dimensional (2D) image and a three dimensional (3D) image, and a driver that is driven so as to display an image on the display panel. The driver includes a 3D image conversion unit that converts the 3D image into a protective image if a length of a period during which the 3D image is displayed on the display panel is longer than a length of a first period.

Display apparatus utilizing protective image for a period of display of 3D image

A method of driving a plasma display apparatus is disclosed. The method includes supplying a first scan signal to a first scan electrode group of a plurality of scan electrode groups each including at least one scan electrode during an address period, supplying a second scan signal having a different voltage magnitude from a voltage magnitude of the first scan signal to a second scan electrode group of the plurality of scan electrode groups during the address period, and supplying a data signal corresponding to the first scan signal and the second scan signal to an address electrode. The first scan signal or the second scan signal is supplied depending on scanning order of the plurality of scan electrodes during the address period.

Method of driving plasma display apparatus

A plasma display apparatus and a method of driving the same are disclosed. The plasma display apparatus includes a plasma display panel including first electrodes, second electrodes, and third electrodes, a first driver, a second driver, and a reference separation controller. The first driver supplies sustain signals each including a positive polarity sustain signal and a negative polarity sustain signal to the first electrodes during a sustain period, and supplies a ground level voltage during at least one time interval between the positive polarity sustain signals and the negative polarity sustain signals. The reference separation controller connects or separates a first reference voltage source commonly connected to the first driver and the second electrodes to or from a second reference voltage source connected to the second driver.

Plasma display apparatus and method of driving the same

A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel including a scan electrode, a sustain voltage supply unit supplying a sustain voltage to the scan electrode, a scan reference voltage supply unit supplying a scan reference voltage to the scan electrode, a scan reference voltage controller that is connected between the scan reference voltage supply unit and the scan electrode and includes a resistor changing the scan reference voltage into a reset signal with a predetermined slope, a voltage storing unit that is connected between the sustain voltage supply unit and the scan reference voltage supply unit and stores the scan reference voltage, and a driving signal output unit that controls an output of a voltage supplied to the scan electrode using a single switch.

Plasma display apparatus

There is provided a plasma display apparatus comprising a plasma display panel and a driver. The plasma display panel includes a first electrode and a second electrode. The driver alternately supplies a first sustain signal and a second sustain signal to the first electrode and the second electrode in a first subfield and supplies a third sustain signal and a fourth sustain signal that swing a positive polar voltage and a negative polar voltage in a second subfield to the first electrode and the second electrode.

A plasma display apparatus and driving method thereof are disclosed. The plasma display apparatus comprises: a plasma display panel comprising scan electrodes and sustain electrodes, a scan driver for supplying a first pulse to the scan electrodes before a reset period of a first subfield, a first reset pulse gradually falling after maintaining a constant voltage to the scan electrodes during the reset period, and a second reset pulse having a voltage higher than the constant voltage of the first reset pulse to the scan electrodes during a reset period of a second subfield and a sustain driver for supplying a second pulse with a polarity opposite a polarity of the first pulse to the sustain electrodes corresponding to the first pulse before the reset period.

Plasma display apparatus and driving method thereof

The present invention relates to a plasma display apparatus and driving method thereof. In accordance with a plasma display apparatus and driving method thereof, widths of scan pulses are different depending on locations of the scan lines. Since scan pulse widths are set depending on locations of the scan lines, high speed driving is possible, a sustain period can be secured and luminance can be increased.

A plasma display apparatus is disclosed. The plasma display apparatus includes a plasma display panel comprising a scan electrode and a sustain electrode. When an image displayed on the plasma display apparatus is a fixed image pattern which has a rate of change equal to or less than a threshold rate of change in input image data and is displayed as a picture for a duration equal to or more than a threshold duration of time, the number of sustain pulses or a magnitude of a voltage of a sustain pulse supplied to at least one of the scan electrode or the sustain electrode in a sustain period of a subfield subsequent to the threshold duration of time is controlled.

Growing community of inventors

Seoul, South Korea

Seonghak Moon