Crystal for a telephone watch
First Claim
1. A crystal for a watch including a keyboard, said crystal comprising an exterior upper face, directed toward the exterior of said watch, and an interior lower face directed toward the interior of said watch, wherein said keyboard includes a plurality of keys, each key being associated with at least one electrode disposed on the lower face of the crystal for forming a plurality of capacitive sensors, said keys being activated by placing a finger on said upper face of the crystal opposite said at least one electrode, wherein said crystal includes a thick zone and a thinned zone, the keys of the keyboard being disposed in only the thinned zone,wherein the crystal is secured onto a bezel including an inner reinforcement extending under the thinned zone of the crystal, the keyboard being sandwiched between said thinned zone and said reinforcement, andwherein the upper face of the crystal facing the exterior of the watch has a continuous smooth curved surface.
1 Assignment
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Accused Products
Abstract
The telephone watch includes a crystal (1) including a keyboard (2) formed in particular of a plurality of capacitive sensors (3) disposed under the crystal. This crystal includes a thick zone (4) at its center and a thinned zone (5) at its periphery. The keyboard (2) is deposited under the thinned zone (5).
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Citations
7 Claims
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1. A crystal for a watch including a keyboard, said crystal comprising an exterior upper face, directed toward the exterior of said watch, and an interior lower face directed toward the interior of said watch, wherein said keyboard includes a plurality of keys, each key being associated with at least one electrode disposed on the lower face of the crystal for forming a plurality of capacitive sensors, said keys being activated by placing a finger on said upper face of the crystal opposite said at least one electrode, wherein said crystal includes a thick zone and a thinned zone, the keys of the keyboard being disposed in only the thinned zone,
wherein the crystal is secured onto a bezel including an inner reinforcement extending under the thinned zone of the crystal, the keyboard being sandwiched between said thinned zone and said reinforcement, and wherein the upper face of the crystal facing the exterior of the watch has a continuous smooth curved surface.
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6. A crystal for a watch including a keyboard, said crystal comprising an exterior upper face, directed toward the exterior of said watch, and an interior lower face directed toward the interior of said watch, wherein said keyboard includes a plurality of keys, each key being associated with at least one electrode disposed on the lower face of the crystal for forming a plurality of capacitive sensors, said keys being activated by placing a finger on said upper face of the crystal opposite said at least one electrode, wherein said crystal includes a thick zone and a thinned zone, the keys of the keyboard being disposed in only the thinned zone,
wherein the upper face of the crystal facing the exterior of the watch has a continuous smooth curved surface, and wherein said thick zone has a thickness sufficient to withstand a hydrostatic pressure of three bars.
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7. A crystal for a watch including a keyboard, said crystal comprising an exterior upper face, directed toward the exterior of said watch, and an interior lower face directed toward the interior of said watch, wherein said keyboard includes a plurality of keys, each key being associated with at least one electrode disposed on the lower face of the crystal for forming a plurality of capacitive sensors, said keys being activated by placing a finger on said upper face of the crystal opposite said at least one electrode, wherein said crystal includes a thick zone and a thinned zone, the keys of the keyboard being disposed in only the thinned zone,
wherein the upper face of the crystal facing the exterior of the watch has a continuous smooth curved surface, and wherein said thinned zone has a substantially constant thickness.
Specification