Illumination device with metalized light-turning features
First Claim
Patent Images
1. An illumination device with integrated touch-sensing capability, comprising:
- a light guide having a plurality of light-turning features defined by recesses in a surface of the light guide;
a plurality of spaced-apart conductors, individual ones of the plurality of conductors residing on and extending into a corresponding one of the recesses without extending into an immediately neighboring recess; and
touch-sensing electronics capable of sensing a change to an electric field of a conductor of the plurality of conductors.
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Abstract
This disclosure provides systems, methods and apparatus for a front illumination device with metalized light-turning features. In one aspect, an illumination device with integrated touch sensor capability includes a light guide having a metalized light-turning feature and an electrode system for sensing changes to the capacitance between electrodes in the electrode system induced by the proximity of an electrically conductive body, such as a human finger. The metalized light-turning features may be electrically connected to and/or part of the electrode system.
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Citations
29 Claims
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1. An illumination device with integrated touch-sensing capability, comprising:
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a light guide having a plurality of light-turning features defined by recesses in a surface of the light guide; a plurality of spaced-apart conductors, individual ones of the plurality of conductors residing on and extending into a corresponding one of the recesses without extending into an immediately neighboring recess; and touch-sensing electronics capable of sensing a change to an electric field of a conductor of the plurality of conductors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of manufacturing an illumination device with integrated touch-sensing capability, comprising:
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providing a light guide having a plurality of light-turning features defined by recesses in a surface of the light guide; disposing individual ones of a plurality of spaced-apart conductors on surfaces of a corresponding light-turning feature in the light guide, and extending into the corresponding recess of the light-turning feature without extending into an immediately neighboring recess; and electrically connecting the conductors to touch-sensing electronics capable of sending a change to an electric field of a conductor of the plurality of conductors. - View Dependent Claims (20, 21, 22, 23)
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24. An illumination device with integrated touch-sensor capability, comprising:
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a means for guiding light having a plurality of means for turning light defined by recesses in a surface of the guiding means; a plurality of spaced-apart means for conducting electricity, individual ones of the conducting means residing on a corresponding turning means, and extending into the recess of the corresponding turning means without extending into an immediately neighboring recess; and a means for detecting a touch event based on sensing a change to an electric field of a conducting means of the plurality of conducting means. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification