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

Claim 0:
1. A keyboard, comprising:
a backlight module, comprising a light source, a reflective layer, a light guide layer, and a shielding layer, wherein the light source is disposed corresponding to the light guide layer and covered by the shielding layer, and the light guide layer is located between the shielding layer and the reflective layer, wherein the light guide layer has a through-hole, and the shielding layer and the reflective layer are in contact with each other in the through-hole of the light guide layer;
a base plate, disposed on the shielding layer;
a membrane circuit, disposed on the base plate, wherein the base plate has a positioning portion disposed corresponding to the through-hole of the light guide layer, and the positioning portion protrudes toward the reflective layer or the membrane circuit; and
a plurality of key structures, disposed on the membrane circuit.