US 12,437,940 B2
Input device
Junji Hashida, Fukushima-ken (JP)
Assigned to Alps Alpine Co., Ltd, Tokyo (JP)
Filed by Alps Alpine Co., Ltd., Tokyo (JP)
Filed on Dec. 9, 2024, as Appl. No. 18/973,604.
Application 18/973,604 is a continuation of application No. PCT/JP2023/008500, filed on Mar. 7, 2023.
Claims priority of application No. 2022-104958 (JP), filed on Jun. 29, 2022.
Prior Publication US 2025/0102724 A1, Mar. 27, 2025
Int. Cl. H01H 13/83 (2006.01); F21V 8/00 (2006.01); G06F 3/02 (2006.01); H01H 13/02 (2006.01)
CPC H01H 13/83 (2013.01) [G02B 6/005 (2013.01); G02B 6/0068 (2013.01); G06F 3/02 (2013.01); H01H 13/02 (2013.01); H01H 13/023 (2013.01); H01H 2013/026 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An input device comprising:
an input detection unit, including:
an operation surface;
a circuit board;
an electrostatic electrode disposed on the circuit board and configured to detect electrostatic capacitance;
at least one light source disposed on the circuit board;
a light guide plate provided below the operation surface and above the electrostatic electrode, the light guide plate having an upper surface, a lower surface, at least one first side surface facing the at least one light source, and at least one second side surface not facing the at least one light source, the first side surface and the second side surface adjacent to each other forming an obtuse angle; and
a light shielding member having a frame shape surrounding the light guide plate, the light shielding member having a light shielding wall,
wherein the at least one first side surface of the light guide plate is perpendicular to the upper surface and the lower surface of the light guide plate, while the at least one second side surface of the light guide plate is inclined to face downward,
and wherein the light shielding wall of the light shielding member is inclined to face upward and in contact with the at least one second side surface of the light guide plate.