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

Claim 6:
7. A keyboard, comprising:
a backlight module, comprising a light source, a reflective layer, a light guide layer, and a shielding layer, wherein the light guide layer is disposed on the reflective layer, the shielding layer is disposed on the light guide layer, and the light source is disposed corresponding to the light guide layer and covered by the shielding 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 a through-hole of the light guide layer, the positioning portion protrudes toward the membrane circuit, and the positioning portion has a recess facing the backlight module; and
a plurality of key structures, disposed on the membrane circuit.