Lg Display Co., Ltd.

Other

Tae Hun Kim

Woo Kyu Sang

Moon Soo Chung

Hun Il Lim

Yu Jeub Ha

In Ki Jeon

Hyeong Jin Jang

Dong Gi Han

Sang Jin Jeong

Jung Ho Han

Kun Woo Choi

Min Gyu Jung

Hyung Jin Jung

Jae Sung Choi

Jin Cheol Hong

Sang Kyu Park

Su Hyuk Jang

Sin Ho Kang

Man Gyu Park

Hwan Ock Choe

Seung Cheol O

Yeo Wool Jung

Hyo Jin Kim

Kyung Sek Song

Sang Jeon Park

A display device including a display panel including data lines, gate lines, power lines, and sub-pixels; a gate driver to supply a gate signal to the gate lines; a data driver configured to supply a data voltage to the data lines during a refresh frame period prior to a hold frame period; and a compensation voltage generator configured to during the hold frame period, output a first compensation voltage to the data lines instead of the data voltage supplied by the data driver, and output a second compensation voltage and a third compensation voltage to the power lines connected to the sub-pixels, and during the refresh frame period, output the second compensation voltage and the third compensation voltage to the power lines without outputting the first compensation voltage.

Display device and driving method thereof

A lensmeter capable of measuring near-infrared ray transmittance of an eyeglass lens by adding a near-infrared ray measurement function to the lensmeter. The lensmeter includes a near-infrared ray transmittance measuring unit that includes a light emitting unit including a near-infrared ray light source for irradiating a measured lens with a near-infrared ray; and a light receiving unit including a near-infrared ray sensor for measuring a near-infrared ray transmittance of the measured lens by detecting an intensity of the near-infrared ray passing through the measured lens, and is located at one end of a housing of the lensmeter.

Lensmeter capable of measuring near-infrared transmittance of eyeglass lens

Disclosed a display device and a method of driving the same. Each of sub-pixels in the display device includes: a light-emitting element; a driving element; a first switch element; a second switch element; a third switch element; and a fourth switch element. A gate signal includes: a first-first scan signal applied to a gate electrode of the fourth switch element, a first-second scan signal applied to a gate electrode of the third switch element, a second scan signal applied to a gate electrode of the second switch element, and an emission control signal applied to a gate electrode of the first switch element. A pulse of the first-first scan signal has the same pulse width as a pulse of the first-second scan signal and precedes the pulse of the first-second scan signal.

A light-emitting display device includes a display panel including a plurality of subpixels each including a light-emitting element, a data driver configured to supply a data voltage and a reset voltage to each of the subpixels, and a scan driver configured to output an emission signal for controlling a non-emission period and an emission period of the light-emitting element and a reset signal for controlling a reset period of each of the subpixels, wherein the scan driver outputs the emission signal a plurality of times in one frame period and outputs the reset signal a plurality of times in a non-emission period according to the emission signal, and at least one of a plurality of emission signals or a plurality of reset signals has at least one of a different delay period or a different pulse width.

Light-emitting display device

A liquid crystal display for changing a supply sequence of a scanning pulse with which a plurality of gate lines are supplied to realize a one dot inversion, and a driving method thereof are disclosed. In the liquid crystal display, a liquid crystal display panel has a plurality of data lines and a plurality of gate lines, which are crossed each other, and pixels, which are defined by the lines. A gate driver supplies scanning pulses to the gate lines, and changes a supply sequence of the scanning pulses for each frame. A data driver converts digital video data into data voltages and periodically inverts a polarity of the data voltages to supply the data voltages in accordance with a supply sequence of the scanning pulses. And a timing controller supplies the digital video data to the data driver, and controls the data driver and the gate driver, and wherein a polarity of data voltages, which are supplied to the liquid crystal display panel, is inverted for each liquid crystal cell and a polarity of a data voltage which is outputted from the data driver, is inverted for every two to four horizontal periods.

Liquid crystal display and driving method thereof

Growing community of inventors

Paju-si, South Korea

Tae Hun Kim