Patent ID: 11940646
Assignee: DARFON ELECTRONICS CORP.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC F  G  H

Claim 6:
7. An illuminated keyswitch structure, comprising:
a base plate;
a keyswitch backlight structure, stacked on or under the base plate, the keyswitch backlight structure comprising a light-guiding layer, a reflective layer, and a transparent adhesive layer, the light-guiding layer having a bottom surface, a light-emitting surface opposite to the bottom surface, and a surface microstructure formed on the light-emitting surface, the reflective layer being disposed under the light-guiding layer opposite to the bottom surface, the transparent adhesive layer being closely attached to and between the reflective layer and the light-guiding layer corresponding to the surface microstructure;
a keycap, disposed above the base plate, the keycap having a transparent indication area; and
a supporting mechanism, the supporting mechanism being connected to and between the base plate and the keycap so that the keycap moves up and down relative to the base plate and the keyswitch backlight structure through the supporting mechanism;, wherein light entering the light-guiding layer exits the light-guiding layer through the light-emitting surface to illuminate the transparent indication area; and, wherein a low reflective layer is formed corresponding to the surface microstructure on a surface of the reflective layer facing the light-guiding layer, and a reflectance of the low reflective layer is lower than a reflectance of the reflective layer.