Lg Display Co., Ltd.

Hyun-Ho Park

Si-Hyun Kim

Kyoung-Seok Park

Key-Young Yang

Sung-Jin Um

Ki-Jeong Lee

Ji-Hoon Yu

Hye-Ji Jeon

Min-Ho Lee

A liquid crystal display device includes first and second substrates facing and spaced apart from each other; a liquid crystal layer between the first and second substrates; a thin film transistor in a subpixel on an inner surface of first substrate; a pixel electrode connected to the thin film transistor; a common electrode generating an electric field with the pixel electrode; a black matrix in a border portion of the subpixel on an inner surface of the second substrate, the black matrix including a metallic material, and a voltage applied to the black matrix; and a color filter layer in a center portion of the subpixel on the black matrix.

Liquid crystal display device

A touch display device includes a substrate; a thin film transistor over the substrate; a planarization layer over the thin film transistor; a touch line over the planarization layer; a touch insulation layer over the touch line; a touch electrode over the touch insulation layer; a pixel electrode over the touch electrode and connected to the thin film transistor, wherein the planarization layer has a first hole corresponding to a drain electrode of the thin film transistor, and the touch insulation layer has a second hole corresponding to the drain electrode, and wherein the second hole includes a first hole portion and a second hole portion connected to each other along a first direction, the first hole is disposed within the first hole portion, and the touch electrode is in contact with the touch line through the second hole portion.

Touch display device

A touch display device and a method of driving the same are disclosed. The touch display device includes: a touch display panel displaying an image and sensing a touch; a plurality of touch electrodes disposed on the touch display panel and divided into a plurality of blocks; a plurality of gate lines disposed on the touch display panel and overlapping the plurality of touch electrodes; and a touch display driving circuit supplying a common voltage to the plurality of touch electrodes and supplying a gate voltage to the plurality of gate lines, wherein the common voltage has a first voltage before and after a first compensation period corresponding to a high level period of the gate voltage supplied to one of the plurality of gate lines firstly overlapping one of the plurality of touch electrodes and has a second voltage lower than the first voltage during the first compensation period.

Touch display device with compensation of common voltage

A gate driving unit includes a plurality of stages sequentially outputting a plurality of gate signals, wherein each of the plurality of stages includes a first transistor including: a gate electrode; a gate insulating layer on the gate electrode; and a source electrode and a drain electrode on the gate insulating layer over the gate electrode, the source electrode and the drain electrodes spaced apart from each other, and wherein a first area where the gate electrode and the source electrode overlap each other is 2.5 times to 6 times of a second area where the gate electrode and the drain electrode overlap each other.

Gate driving unit and liquid crystal display device including the same

A gate driving unit includes first to nth stages sequentially outputting first to nth gate pulses, respectively, according to a start signal, wherein n is an integer larger than 2; and a dummy stage receiving the nth gate pulse, charging an (n+1)th Q node and outputting a dummy pulse synchronized with a clock signal, the dummy stage receiving a reset signal and discharging the (n+1)th Q node, wherein the first to nth stages receive the reset signal and charge first QB to nth QB nodes, respectively.

Growing community of inventors

Paju-si, South Korea

Hyun-Ho Park