Luminous keyboard and optical module thereof
AssigneeDarfon Electronics Corp.
InventorsShih-Yung Ku, Wen-Ming Hsu
Life of this patent
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Abstract
A luminous keyboard includes a keyswitch module and an optical module disposed under the keyswitch module. The keyswitch module includes a plurality of keyswitches. The optical module includes a mask film and a light guide sheet. The mask film has a mask pattern. The mask pattern defines a plurality of light-transparent regions respectively corresponding to the plurality of keyswitches, and an outer light-transparent region of the plurality of light-transparent regions has a boundary. The light guide sheet has a light-exit edge. The vertical projection of the light-exit edge of the light guide sheet on the mask film at least partially falls within the outer light-transparent region and is not parallel to the boundary.
Claims16
An optical module for a luminous keyboard comprising a plurality of keyswitches, comprising:
- a mask film having a mask pattern, the mask pattern defining a plurality of light-transparent regions respectively corresponding to the plurality of keyswitches, an outer light-transparent region of the plurality of light-transparent regions having a boundary closer to an edge of the mask film than an inner light-transparent region of the plurality of light-transparent regions;
- and
- a light guide sheet disposed on one side of the mask film along a stacking direction, the light guide sheet having a light-output surface overlapping the mask film in the stacking direction and a light-exit edge defining a boundary of the light-output surface, wherein on the mask film a vertical projection of the light-exit edge of the light guide sheet at least partially falls within the outer light-transparent region and is not parallel to the boundary of the outer light-transparent region of the mask film.
An optical module for a luminous keyboard comprising a plurality of keyswitches, comprising:
- a mask film having a mask pattern, the mask pattern defining a plurality of light-transparent regions respectively corresponding to the plurality of keyswitches, an outer light-transparent region of the plurality of light-transparent regions having a boundary closer to an edge of the mask film than an inner light-transparent region of the plurality of light-transparent regions;
- and
- a light guide sheet disposed on one side of the mask film along a stacking direction, the light guide sheet having a light-output surface overlapping the mask film in the stacking direction, a light-exit edge defining a boundary of the light-output surface, and a hole in the light-output surface, wherein on the mask film a vertical projection of the light-exit edge of the light guide sheet at least partially falls within the outer light-transparent region, and on the mask film a vertical projection of the hole falls within the outer light-transparent region.
An optical module for a luminous keyboard comprising a plurality of keyswitches, comprising:
- a mask film having a mask pattern, the mask pattern defining a plurality of light-transparent regions and a plurality of light-transparent sub-regions, the plurality of light-transparent regions respectively corresponding to the plurality of keyswitches, an outer light-transparent region of the plurality of light-transparent regions having a boundary closer to an edge of the mask film than an inner light-transparent region of the plurality of light-transparent regions, the plurality of light-transparent sub-regions disposed adjacent to the outer light-transparent region away from the inner light-transparent region;
- and
- a light guide sheet disposed on one side of the mask film along a stacking direction, the light guide sheet having a light-output surface overlapping the mask film in the stacking direction and a light-exit edge defining a boundary of the light-output surface, wherein on the mask film a vertical projection of the light-exit edge of the light guide sheet at least partially falls within the plurality of light-transparent sub-regions.
Dependencies are inferred from the claim text.