US 11,735,383 B2
Information handling system keyboard discrete row illumination
Jace W. Files, Round Rock, TX (US); and John Trevor Morrison, Round Rock, TX (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by Dell Products L.P., Round Rock, TX (US)
Filed on Feb. 26, 2021, as Appl. No. 17/187,079.
Application 17/187,079 is a division of application No. 16/380,025, filed on Apr. 10, 2019, granted, now 10,991,524.
Prior Publication US 2021/0183596 A1, Jun. 17, 2021
Int. Cl. H01H 13/83 (2006.01); G06F 3/02 (2006.01); H01H 13/7065 (2006.01)
CPC H01H 13/83 (2013.01) [G06F 3/0219 (2013.01); H01H 13/7065 (2013.01); H01H 2219/044 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A portable information handling system comprising:
a housing having an interior and an upper surface;
a processor disposed in the housing interior and operable to execute instructions to process information;
a memory disposed in the housing interior and interfaced with the processor, the memory operable to store the instructions and information;
a display integrated in the housing and interfaced with the processor, the display operable to present the information as visual images;
a keyboard integrated in the housing upper surface, the keyboard having plural rows of plural keys disposed over a membrane that detects key touches and a backlight structure, the backlight structure having plural lightguides, each lightguide aligned under one of the plural rows of keys, the backlight structure having plural independent light sources that provides illumination to the keys, each of the plural independent light sources directed towards one of the plural lightguides; and
a keyboard controller interfaced with the processor, the keyboard and the plural independent light sources;
wherein keyboard controller sets each independent light source illumination level based upon one or more predetermined conditions.