Lg Display Co., Ltd.

ChangHwan Seo

KiJeong Lee

SeungChul Park

SeungMok Shin

NamKyun Cho

Eunji Seo

Hyunkyung Kim

Discussed are a display panel which can be applied to a touch display device by changing a design of a conductive layer to electrically connect a plurality of pads to a plurality of common electrodes, and a display device and a touch display panel device thereof.

Display panel, display device and touch display panel

Disclosed is a display apparatus capable of sensing a pen touch without malfunction even when a user's hand or palm touches the display apparatus. The display apparatus includes a touch driving circuit dividing a plurality of touch electrodes arranged in a display panel into a plurality of touch groups, supplying a common voltage to the plurality of touch electrodes at each of a plurality of display periods, and sensing a position of a touch pen through some of the plurality of touch electrodes at each of a plurality of pen sensing periods, wherein the touch driving circuit supplies an uplink signal to some of the plurality of touch groups at each of at least one pen position sensing period among the plurality of pen sensing periods and senses a downlink signal transmitted from the touch pen through the touch groups to which the uplink signal has been supplied to generate pen touch raw data.

Display apparatus

The present disclosure provides a display panel for a display device including a touch electrode divided into first touch unit sensors having a first size and second touch unit sensors having a second size different from the first size. When a horizontal or vertical size of a second touch unit sensor is compared with a first touch unit sensor, the vertical size of the second touch unit sensor is smaller than that of the first touch unit sensor when the horizontal size of the second touch unit sensor is larger than that of the first touch unit sensor and the horizontal size of the second touch unit sensor is smaller than that of the first touch unit sensor when the vertical size of the second touch unit sensor is larger than that of the first touch unit sensor. Therefore, an area deviation of touch unit sensors forming a touch electrode is minimized and thus uniform and superior touch performance may be provided.

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Incheon, South Korea

ChangHwan Seo