US 11,923,155 B2
Keyboard and backlight module
Mitsuo Horiuchi, New Taipei (TW); Chia-Hsin Chen, New Taipei (TW); and Ping-Ju Kuo, New Taipei (TW)
Assigned to CHICONY ELECTRONICS CO., LTD., New Taipei (TW)
Filed by CHICONY ELECTRONICS CO., LTD., New Taipei (TW)
Filed on Mar. 23, 2022, as Appl. No. 17/702,383.
Claims priority of provisional application 63/235,374, filed on Aug. 20, 2021.
Claims priority of application No. 110143026 (TW), filed on Nov. 18, 2021.
Prior Publication US 2023/0053991 A1, Feb. 23, 2023
Int. Cl. H01H 13/83 (2006.01); F21V 8/00 (2006.01)
CPC H01H 13/83 (2013.01) [G02B 6/0045 (2013.01); G02B 6/0055 (2013.01); H01H 2219/062 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A keyboard, comprising:
a base plate having a short-axis direction and a long-axis direction;
a plurality of keys disposed on the base plate; and
a backlight module disposed on a side of the base plate, the backlight module comprising:
a shielding sheet comprising an upper surface and a lower surface, the upper surface facing toward the base plate;
a light guide plate disposed on the lower surface of the shielding sheet, wherein the light guide plate comprising a plurality of light guide structures corresponding to the keys respectively, each of the light guide structures comprising a ring portion and at least one bend line portion, the bend line portion connects to the ring portion, and the ring portion is formed by a plurality of bending portions; and
a reflecting sheet disposed below the light guide plate.