Backlight module and lighting keyboard
AssigneeDarfon Electronics Corp.
InventorsYu-Ming HUANG, Kuan-Te LIN
Life of this patent
Estimating the term…
Abstract
A keyswitch is provided. The keyswitch comprises a keycap. The keycap has a key top and a key skirt. The key skirt surrounds the key top and extends downward and outward. The key skirt includes a plurality of skirt corners and a plurality of skirt sides. The skirt corners and the skirt sides allow light to pass through. The key skirt has an annular skirt undersurface formed by a plurality of side undersurfaces and a plurality of corner undersurfaces. A ratio of a width of the corner undersurface to a width of the side undersurface is between 1 and 3.
Claims20
A keyswitch, comprising:
- a keycap having a key top and a key skirt extending downwardly and outwardly around the key top, wherein the key skirt includes a plurality of skirt corners and a plurality of skirt edges;
- wherein the plurality of skirt corners and the plurality of skirt edges allow light to pass through;
- wherein the key skirt has an annular skirt undersurface formed by a plurality of side undersurfaces and a plurality of corner undersurfaces, and a ratio of a width of the corner undersurface to a width of the side undersurface is between 1 and 3.
A keyswitch, comprising:
- a keycap having a key top and a key skirt surrounding the key top, wherein the key skirt includes a skirt corner, an inner surface of the skirt corner includes a corner curve surface, a first curve surface and a second curve surface arranged sequentially from outside to inside, and the first curve surface is connected between the corner curve surface and the second curve surface;
- wherein a ratio of a width of an intersection between the first curve surface and the second curve surface to a width of an intersection between the first curve surface and the corner curve surface is between 1.3 and 1.7.
A keyswitch, comprising:
- a keycap having a key top and a key skirt surrounding the key top, wherein an inner side of the key top includes a hook, the key skirt includes a skirt corner and a skirt edge, and the hook is adjacent to the skirt corner and the skirt edge;
- wherein a projection overlap ratio between the skirt corner and the hook, in a skirt edge direction parallel to the skirt edge of the key skirt, is less than 50%.
Dependencies are inferred from the claim text.