Chicony Electronics Co., Ltd.

Cheng-Hui Shen

Ching-Cheng Tsai

A keyswitch, disposed on a base plate, includes a keycap and a scissors-like supporting structure. The scissors-like supporting structure is disposed on the base plate and supports the keycap. The scissors-like supporting structure includes a first supporting member and a second supporting member. The first supporting member includes a first engaging shaft and a second engaging shaft respectively engaged with the base plate and the keycap. The second supporting member is pivotally connected to the first supporting member and includes a third engaging shaft and a fourth engaging shaft respectively engaged with the base plate and the keycap. A line connected between the centers of gravity of the first and second engaging shaft is not perpendicular to the first and second engaging shaft. A line connected between the centers of gravity of the third and fourth engaging shaft is not perpendicular to the third and fourth engaging shaft.

Keyswitch and keyboard including the same

A membrane circuit board and a keyboard device having the same are provided in the invention. The membrane circuit board is defined with a plurality of key regions. Each of the key regions is with a pressing region and at least one light-pervious region thereon. The membrane circuit board comprising at least two light-pervious membranes stacked with each other, and at least one light-pervious adhesive layer sandwiched between the two light-pervious membranes and at least fully filled in the light-pervious region.

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Taipei, Taiwan

Cheng-Hui Shen