US 12,455,635 B2
Illuminated sensing key
Heng-Yi Huang, Taoyuan (TW); and Chun-Tan Wu, Taoyuan (TW)
Assigned to DARFON ELECTRONICS CORP., Taoyuan (TW)
Filed by DARFON ELECTRONICS CORP., Taoyuan (TW)
Filed on Jul. 5, 2024, as Appl. No. 18/764,404.
Claims priority of application No. 112139883 (TW), filed on Oct. 19, 2023; and application No. 113100532 (TW), filed on Jan. 5, 2024.
Prior Publication US 2025/0130649 A1, Apr. 24, 2025
Int. Cl. G06V 40/13 (2022.01); G06F 3/02 (2006.01)
CPC G06F 3/0208 (2013.01) [G06V 40/1318 (2022.01)] 18 Claims
OG exemplary drawing
 
1. An illuminated sensing key comprising:
a circuit board;
a sensing module disposed on the circuit board;
a first light source disposed on the circuit board;
a first light guide panel disposed on the sensing module, the first light guide panel comprising a top portion, a recess and a side wall connected to the top portion and surrounding the recess, the side wall having a chamfer structure, a part of the sensing module being accommodated in the recess; and
a keycap disposed on the first light guide panel, the keycap comprising a first hollow area, a vertical projection of the first hollow area overlapping with the top portion of the first light guide panel and the sensing module, the vertical projection of the first hollow area not overlapping with the first light source;
wherein light emitted by the first light source enters the first light guide panel from below the side wall and is guided by the chamfer structure to the first hollow area to emit light.