Lg Display Co., Ltd.

Kyoungdon Woo

Taegung Kim

Sangho Yu

Chulwon Lee

Myunggi Lim

Seokhyun Hong

Jaedo Lee

Haksu Kim

Hyemin Park

Youngjun Hong

Sujin Baek

Youngjin Hong

Wonkyu Ha

Osung Do

An organic light emitting diode display includes a display panel including a plurality of pixels, each pixel including an organic light emitting diode (OLED) and a driving thin film transistor (TFT) configured to control an amount of current flowing in the OLED depending on a difference between a data voltage and a reference voltage, a source driver integrated circuit (IC) configured to produce the data voltages corresponding to data of an input image and apply the data voltages to data lines connected to the pixels, an image analyzer configured to analyze the data of the input image and produce reference voltage control data, and a reference voltage regulator configured to produce the reference voltages varying depending on the input image based on the reference voltage control data and apply the reference voltages to reference lines connected to the pixels.

Organic light emitting diode display

The present invention relates to a stereoscopic image display and a power control method thereof, including a timing controller which varies a driving circuit supply voltage between a first voltage and a third voltage in a 3D mode for displaying a 3D image on a display panel by controlling a power supply circuit and controls the driving circuit supply voltage as a second voltage in a 2D mode for displaying a 2D image on the display panel. The second voltage is lower than the first voltage and is higher than the third voltage.

Stereoscopic image display and power control method thereof

A DC-DC converter comprises a burst mode circuit configured to work when a load connected to an output terminal of the DC-DC converter is a light load, and a PWM mode circuit configured to work when the load is a heavy load, wherein the burst mode circuit switches a voltage at the output terminal during a period of time when a feedback voltage from the output terminal reaches a high potential reference voltage, generates a switch start signal with frequencies divided by predetermined frequency division values, and switches the voltage at the output terminal in response to the switch start signal, and wherein the PWM mode circuit switches the voltage at the output terminal during a period of time when a ramp wave signal is greater than a difference voltage between the feedback voltage and a predetermined PWM mode reference voltage.

DC-DC converter and controlling method thereof, and display device using the same

An organic light emitting diode (OLED) display is disclosed. The OLED display includes a display panel including a plurality of pairs of data lines, a plurality of gate line groups crossing the pairs of data lines, and a plurality of pixels each having a drive thin film transistor (TFT) and an organic light emitting diode at each of crossings of the pairs of data lines and the gate line groups, a timing controller generating a non-overlap signal, and a sample and hold block that removes an overlap period between adjacently generated first holding clocks using the non-overlap signal to generate second holding clocks that do not overlap each other, applies sampled threshold voltages of the drive TFTs of the pixels to an output node in response to the second holding clocks, and discharges the output node in the overlap period in response to the non-overlap signal.

An organic light emitting device is disclosed. The organic light emitting device includes a display unit including a plurality of subpixels, a host memory unit that stores image data received from the outside by the frame, a data adjusting unit that fetches the image data frames stored in the host memory unit by the bit and converts one frame into a plurality of subfields and one display memory unit that stores the image data frame converted into the plurality of subfields by the data adjusting unit. When the data adjusting unit converts the frame into the plurality of subfields, the data adjusting unit inserts a black time into at least one of the plurality of subfields.

Growing community of inventors

Gyeonggi-do, South Korea

Kyoungdon Woo