Lg Display Co., Ltd.

Changhun Cho

Hyunchul Kim

Jinsung Kim

Soondong Cho

Jeongho Kang

JinCheol Hong

Yangseok Jeong

Mangyu Park

Pilsung Kang

Geunwoo Koh

Seungcheol Oh

A foldable display comprises a flexible display panel including a first screen, a second screen, and a foldable boundary region positioned between the first screen and the second screen; a first drive IC connected to data lines of the first screen and connected to data lines of a first boundary region to drive pixels of the first screen and the first boundary region; and a second drive IC connected to data lines of the second screen and connected to data lines of a second boundary region to drive pixels of the second screen and the second boundary region, wherein channels of the first drive IC and channels of the second drive IC are driven and shutdown in accordance with status on whether the first and second screens are driven.

Foldable display

A method of controlling polarity of a data voltage and a liquid crystal display using the same, the method including calculating a direct current DC value of the data from each group which data to be output through I-channels adjacent to each other in a source drive IC belong; accumulating the DC value; comparing an absolute value of the accumulation DC value of the n-th group obtained by adding the accumulation DC value of the n&#x2212;1-th group accumulated up to the n&#x2212;1-th group to the DC value of the n-th group (n is positive integer) with a predetermined threshold value; and changing a group polarity data when the absolute value of the accumulation DC value of the n-th group exceeds the threshold value.

Method of controlling polarity of data voltage and liquid crystal display using the same

A liquid crystal display device and a method of driving the same are disclosed. The liquid crystal display device includes a liquid crystal display panel including data lines, gate lines crossing the data lines, and liquid crystal cells arranged in a matrix format at each of crossings of the data lines and the gate lines; a data drive circuit that converts digital video data into a positive/negative data voltage using gamma reference voltages to supply the positive/negative data voltage to the data lines; and a gamma voltage adjusting unit that increases a potential of each of the gamma reference voltages during a blanking period when a polarity of the positive/negative data voltage is inverted.

Liquid crystal display device with gamma voltage adjusting unit and driving method thereof for adjusting the potentials of the gamma reference voltages during a horizontal blanking period

A liquid crystal display and a method of driving the same are provided. The liquid crystal display includes a first source drive IC group outputting a first feedback lock signal in response to one of a power voltage input through a first lock signal input terminal and a lock signal from the timing controller, a second source drive IC group outputting a second feedback lock signal in response to one of the power voltage input through a second lock signal input terminal, the lock signal from the timing controller, and a lock signal transferred from the first source drive IC group, and a comparator that compares the first feedback lock signal with the second feedback lock signal and supplies a comparison result to the timing controller.

Liquid crystal display and method of driving the same

A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a timing controller, N source drive integrated circuits (ICs), where N is an integer equal to or greater than 2, N pairs of data bus lines, each of which connects the timing controller to each of the N source drive ICs in a point-to-point manner, a lock check line that connects a first source drive IC of the N source drive ICs to the timing controller and cascade-connects the N source drive ICs to one another, and a feedback lock check line connecting a last source drive IC of the N source drive ICs to the timing controller. A swing width of an output voltage of the timing controller increases in proportion to a distance between the timing controller and the N source drive ICs.

Growing community of inventors

Gumi-si, South Korea

Changhun Cho