Patent ID: 11967472
Assignee: LITE-ON TECHNOLOGY CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A keyboard, comprising:
a backlight module, comprising:
a reflective layer, having a first opening;
a light guide layer, being disposed on the reflective layer and having a second opening larger than the first opening;
a shielding layer, being disposed on the light guide layer and having a third opening; and
a light source, being disposed corresponding to the light guide layer;

a base plate on the backlight module, wherein the base plate has a positioning portion corresponding to the first, second and third openings, and the reflective layer or the shielding layer has an extension portion protruding from the second opening to a position corresponding to the positioning portion; and
a plurality of key structures on the base plate.