Lg Display Co., Ltd.

Kyuman Lee

Nakjin Seong

Sangsoo Han

Jaeseo Kim

Keuksang Kwon

SungUk Byun

Namkyun Cho

Dongkyoon Heo

Sansoo Han

Chulhyun Hwang

Wonyong Park

The exemplary embodiment suggests an apparatus and a method for driving a light source of a backlight unit. The apparatus for driving the light source of the backlight unit comprises a plurality of LED columns; a power output terminal and feedback terminals connected to the LED columns; and an LED driver sequentially driving the LEDs according to sequentially delayed PWM signals. The LED driver decides an operable number of LED channel based on the signals input through the feedback terminals, and sequentially delays the PWM signals with the phase difference controlled by the number of LED channel.

Apparatus and method for driving light source of back light unit

A display device comprises a display panel including data lines and gate lines crossing each other, a data driving circuit configured to convert digital video data into data voltages which are supplied to the data lines, a gate driving circuit configured to sequentially supply gate pulses to the gate lines, wherein a voltage of each of the gate pulses increases from a gate low voltage to a precharging voltage during a first rising time and thereafter increases from the precharging voltage to a gate high voltage during a second rising time, and wherein the voltage of each of the gate pulses decreases from the gate high voltage to the precharging voltage during a first falling time and thereafter decreases from the precharging voltage to the gate low voltage during a second falling time.

Display device and method for controlling gate pulse

A liquid crystal display is disclosed. The liquid crystal display includes a liquid crystal display panel including an upper substrate, a lower substrate, a liquid crystal layer between the upper substrate and the lower substrate, and m&#xd7;n liquid crystal cells (where m and n are a positive integer) arranged in a matrix format according to a crossing structure of m/2 data lines and 2n gate lines, a plurality of chip on films (COFs) on which source driver integrated circuits (ICs) supplying a data voltage to the data lines are mounted, a printed circuit board (PCB) connected to input terminals of the COFs, and a gate drive circuit directly mounted onto the lower substrate, the gate drive circuit supplying a gate pulse to the gate lines.

Liquid crystal display

Growing community of inventors

Gumi-si, South Korea

Kyuman Lee