| 20110042195 | KEYBOARD - A keyboard includes: a membrane circuit board comprising a plurality of switches; at least one keycap provided with a plurality of contact portions, each of which corresponding to one of the plurality of switches of the membrane circuit board; and a base plate provided with a plurality of openings each of which being positioned at a location corresponding to one of the plurality of switches of the membrane circuit board and one of the plurality of contact portions of the keycap, a buffering portion being formed at a corner adjoining the base plate and one of the plurality of openings. | 02-24-2011 |
