US 12,153,745 B2
Electronic pen and cartridge-type electronic pen main body including an conductive center electrode and a peripheral electrode
Shinya Aoki, Saitama (JP); Yoshiyuki Hashimoto, Saitama (JP); and Takenori Kaneda, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Dec. 5, 2023, as Appl. No. 18/529,385.
Application 18/529,385 is a continuation of application No. 17/690,633, filed on Mar. 9, 2022, granted, now 11,874,977.
Application 17/690,633 is a continuation of application No. PCT/JP2020/037051, filed on Sep. 30, 2020.
Claims priority of application No. 2019-189501 (JP), filed on Oct. 16, 2019.
Prior Publication US 2024/0103649 A1, Mar. 28, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/0354 (2013.01); G06F 3/038 (2013.01)
CPC G06F 3/03546 (2013.01) [G06F 3/0383 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electronic pen having a cylindrical housing with an opening on one end thereof forming a pen tip side in an axial direction, the cylindrical housing holding at least one cartridge-type electronic pen main body inside, the cartridge-type electronic pen main body comprising:
a conductive center electrode of which one end in the axial direction forms a pen tip; and
a peripheral electrode disposed around the center electrode except at least for the pen tip, the peripheral electrode being insulated from the center electrode, wherein the peripheral electrode includes a pen tip side portion and an opposite side portion along the axial direction;
wherein, when the one end of the center electrode forming the pen tip is projected to the outside from the opening of the cylindrical housing upon use, the pen tip side portion of the peripheral electrode is also projected to the outside from the opening, such that both the one end of the center electrode and the pen tip side portion of the peripheral electrode are projected beyond a distal end of the cylindrical housing of the electronic pen to capacitively couple with a sensor surface while the opposite side portion of the peripheral electrode remains within the cylindrical housing of the electronic pen.