US 11,709,555 B2
Smart pen and a display device using the same
Won Sang Park, Yongin-si (KR); Ju Yeon Kim, Asan-si (KR); Chang Min Park, Gwangmyeong-si (KR); Chang Woo Shim, Cheonan-si (KR); Gi Na Yoo, Cheonan-si (KR); and Seong Jun Lee, Seoul (KR)
Assigned to SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed by SAMSUNG DISPLAY CO., LTD., Yongin-si (KR)
Filed on Apr. 7, 2022, as Appl. No. 17/715,464.
Claims priority of application No. 10-2021-0123588 (KR), filed on Sep. 16, 2021.
Prior Publication US 2023/0083248 A1, Mar. 16, 2023
Int. Cl. G06F 3/0354 (2013.01); G06F 3/041 (2006.01); G06F 3/038 (2013.01)
CPC G06F 3/03542 (2013.01) [G06F 3/0383 (2013.01); G06F 3/041 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A smart pen, comprising:
a body part;
a nib part at an end of the body part;
a code detection unit for receiving light reflected from a display panel and the nib part, wherein the light reflected from the display panel and the nib part is used to detect shape data for code patterns of the display panel; and
a code processor for generating coordinate data based on the shape data and transmitting the coordinate data to a main processor for driving the display panel based on the coordinate data,
wherein the code detection unit includes a light emitter, which emits infrared (IR) light using at least one IR light source, and a light receiver, which detects IR light, reflected from the code patterns of the display panel, via an IR camera.