US 12,067,189 B2
Smart pen and display device using the same
Chang Min Park, Gwangmyeong-si (KR); Jin Yong Sim, Seongnam-si (KR); Ivan Maidanchuk, Hwaseong-si (KR); Won Sang Park, Gyeonggi-do (KR); Kyu Shik Shin, Hwaseong-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 Jun. 29, 2022, as Appl. No. 17/809,816.
Claims priority of application No. 10-2021-0151260 (KR), filed on Nov. 5, 2021.
Prior Publication US 2023/0143220 A1, May 11, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/0354 (2013.01); G06F 3/038 (2013.01); G06F 3/042 (2006.01); G06F 3/0488 (2022.01)
CPC G06F 3/04162 (2019.05) [G06F 3/03545 (2013.01); G06F 3/0383 (2013.01); G06F 3/0421 (2013.01); G06F 3/0488 (2013.01); G06F 2203/04106 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A smart pen, comprising:
a body portion;
a pen tip portion disposed on one end of the body portion;
a code detector detecting shape data by applying light to the pen tip portion and receiving light reflected from a display panel and the pen tip portion though a light receiving portion thereof; and
a code processor generating coordinate data from the detected shape data and transmitting the generated coordinate data to a processor,
wherein the pen tip portion includes a reflective surface and the light reflected from the display panel has two paths to the light receiving portion including a first path that is reflected from the reflective surface before arriving at the light receiving portion and a second path that travels directly from the display panel to the light receiving portion.