Lg Display Co., Ltd.

Seung Seok Oh

Jong Hee Hwang

Ki Duk Kim

Jung Hee Kim

An optical touch display device which is advantageous in high-speed driving, large-area touch sensing, and multi-touch sensing because of use of an image map and which can improve touch sensing performance and a driving method thereof are provided. The optical touch display device includes a display device configured to display a display image based on input source image data and an image map for touch sensing, an optical touch pen configured to detect map information of the image map displayed on the display device, and a position detector configured to detect position information (coordinate information) on a screen based on the map information.

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Seoul, South Korea

Seung Seok Oh