Light emitting diode wristwatch with angular display
First Claim
1. A wrist watch comprising a watch case having a flat back plate and bezel, said bezel having a viewing window with a central axis intersecting the plane of said back plate at an acute angle, a plurality of light emitting diode digital display elements and a photosensor within said case adjacent said window, means coupled to said photosensor for controlling the electrical energy supplied to said display elements in response to the amount of ambient light passing through said window and impinging on said photosensor, said display elements being mounted on an electrically insulating substrate, a large scale integrated circuit on said substrate and electrically coupled to said display element, said large scale integrated circuit being mounted on the opposite side of said substrate from said display elements, and a module frame inside said case supporting said substrate, said module frame having a substantially V-shaped groove with long and short sides, said substrate being supported by the long side of said groove.
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Abstract
Disclosed is a solid state wristwatch having an active electro-optical display in the form of light emitting diodes. The display is mounted on one sloping side of a groove in a circular module frame and comprises a ceramic substrate having the display on one side and a large scale integrated circuit on the other. The angular orientation of the display coincides with the axis of an angularly oriented viewing window constructed so that the watch case shades at least part of the display. Viewing under bright daylight is enhanced and through ambient light responsive control of current to the display, battery energy under most viewing conditions is conserved.
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Citations
14 Claims
- 1. A wrist watch comprising a watch case having a flat back plate and bezel, said bezel having a viewing window with a central axis intersecting the plane of said back plate at an acute angle, a plurality of light emitting diode digital display elements and a photosensor within said case adjacent said window, means coupled to said photosensor for controlling the electrical energy supplied to said display elements in response to the amount of ambient light passing through said window and impinging on said photosensor, said display elements being mounted on an electrically insulating substrate, a large scale integrated circuit on said substrate and electrically coupled to said display element, said large scale integrated circuit being mounted on the opposite side of said substrate from said display elements, and a module frame inside said case supporting said substrate, said module frame having a substantially V-shaped groove with long and short sides, said substrate being supported by the long side of said groove.
- 6. A wrist watch comprising a watch case having a flat back plate and a bezel, said bezel having a viewing window with an central axis intersecting the plane of said back plate at an acute angle, a band pass optical filter in said window, a circular electrically insulating module frame in said case, said frame having thinner and thicker portions defining an outwardly extending wall at least substantially parallel with said filter, a plurality of light emitting diode digital display stations supported by said wall adjacent said filter, a photosensor in said case adjacent said window, and means coupled to said photosensor for controlling the electrical energy applied to said display elements in response to the amount of ambient light passing through said window and impinging on said photosensor.
Specification