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US 12,001,169 B2Granted
Watch component, watch movement and watch
AssigneeSeiko Epson Corporation
InventorTakeo Funakawa
Life of this patent
Estimating the term…
Abstract
For example, an escape gear portion as a watch component includes a substrate containing silicon as a main component, and a light reflecting layer including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer that are stacked, in this order, at the substrate, wherein, when the light reflecting layer is viewed in plan view, the light reflecting layer includes a first region and a second region, and a thickness of the silicon layer in the first region is different from a thickness of the silicon layer in the second region.
Claims2
A watch component, comprising:
- a substrate containing silicon as a main component;
- and
- a light reflecting layer including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer that are stacked, in this order, at the substrate,
- wherein when the light reflecting layer is viewed in plan view, the light reflecting layer includes a first region and a second region,
- a thickness of the silicon layer in the first region is different from a thickness of the silicon layer in the second region,
- the silicon layer is sandwiched by the first and second silicon oxide layers in the first region and the second region, and
- the watch component is an escape wheel and pinion, a rim portion of the escape wheel and pinion includes the first region and the second region, and at least a character or a mark is displayed by one of the first region and the second region.
4 more elements
A watch, comprising:
- a watch component including
- a substrate containing silicon as a main component,
- a light reflecting layer including a first silicon oxide layer, a silicon layer, and a second silicon oxide layer that are stacked, in this order, at the substrate, the light reflecting layer, when viewed in plan view, including a first region and a second region, a thickness of the silicon layer in the first region being different from a thickness of the silicon layer in the second region, and the silicon layer is sandwiched by the first and second silicon oxide layers in the first region and the second region;
- and
- a watch case configured to house the watch component,
- wherein the watch component is an escape wheel and pinion, a rim portion of the escape wheel and pinion includes the first region and the second region, and at least a character or a mark is displayed by one of the first region and the second region.
3 more elements
Dependencies are inferred from the claim text.