公开(公告)号：US20190139722A1

公开(公告)日：2019-05-09

申请号：US16092944

申请日：2016-07-26

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： HUNG-MING CHEN ,  KUAN-TING WU ,  CHAO-WEN CHENG

IPC: H01H13/83 ,  G06F3/02 ,  F21V8/00 ,  H05K1/03

Abstract: The present subject matter relates to backlight keyboards. In an example implementation of the present subject matter, backlight keyboards and methods of fabricating lighting units for such backlight keyboards are described. In an example, a backlight keyboard includes a substrate and a plurality of Light Emitting Diodes (LEDs) disposed on the substrate. The backlight keyboard further includes a printed circuit disposed on the substrate, where the printed circuit comprises of a plurality of electrical connections to provide electric current to the plurality of LEDs, and where width of each of the plurality of electrical connections is predefined to control brightness of a corresponding LED from amongst the plurality of LEDs.